Search Subject Areas | Preprints.org

Preprint ARTICLE | doi:10.20944/preprints202201.0112.v1

Life cycle Assessment of Hydrogen Production via Natural Gas Steam Reforming vs. Biomass Gasification

Peiran Zhao, Abbas Tamadon, Dirk Pons

Subject: Engineering, Industrial And Manufacturing Engineering Keywords: Life Cycle Assessment; hydrogen production; natural gas steam reforming; biomass gasification

Online: 10 January 2022 (12:41:26 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201612.0081.v1

Analysis of Aluminum Resource Supply Structure and Guarantee Degree in China Based on Sustainable Perspective

Shaoli Liu, Xin Li, Minxi Wang

Subject: Business, Economics And Management, Econometrics And Statistics Keywords: aluminum resources; sustainable supply; supply structure; guarantee degree

Online: 15 December 2016 (10:13:06 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202002.0272.v1

GWAS Analysis of Wheat Pre-breeding Germplasm for Terminal Drought Stress Using Next Generation Sequencing Technology

Sajid Shokat, Deepmala Sehgal, Fulai Liu, Sukhwinder Singh

Subject: Biology And Life Sciences, Plant Sciences Keywords: Bread wheat; terminal drought; GWAS; grain yield; kernel abortion

Online: 19 February 2020 (10:48:02 CET)

Show abstract| Download PDF| Share

Bread wheat (Triticum aestivum L.) is one of the most important cereal crops for food security. Of all the stresses that curtail wheat productivity, drought has the most detrimental effects. Especially terminal drought stress i.e. at the time of flowering imposes a big challenge to sustain grain production. In the current study, 339 pre-breeding lines derived from three-way crosses of exotics x elite lines were evaluated in the irrigated and drought stress environments at Obregon, Mexico for the year 2016 and 2018. Drought significantly reduced yield (Y), spike length (SL), number of grains per spikes (NGS) and thousand kernel weight (TKW) by 46.4, 19.2, 23.5 and 25.9%, respectively in comparison to irrigated conditions. Kernel abortion (KA), highly correlated with Y, increased significantly (11.6%) under drought stress environment. Population structure analysis in this panel revealed three sub-populations and a genome wide linkage disequilibrium (LD) decay was at 2.5 cM. Single marker and haplotypes-based genome wide association study (GWAS) revealed significant associations on three chromosomes; 4A (HB10.7), 2D (HB6.10) and 3B (HB8.12) with Y, SL and TKW, respectively. Likewise, associations on chromosomes 6B (HB17.1) and 3A (HB7.11) were identified for NGS and on 3A (HB7.12) for KA. Five traits i.e. normalized difference vegetation index (NDVI), canopy temperature depression (CTD) days to heading (DTH), NGS, KA were associated at chromosome 3A both under irrigated and drought conditions however, different haplotypes were estimated. Twenty-six SNPs were part of 10 haplotype blocks associated with Y, SL, TKW, NGS and KA. In silico analysis of the associated SNPs/haplotypes showed hits with candidate genes known to confer abiotic stress resistance in model species and crops. Potential candidate genes include those coding for sulfite exporter TauE/SafE family in Arabidopsis thaliana, TBC domain containing protein in Oryza sativa subsp. Japonica and heat shock proteins in Aegilops tauschii subsp. tauschii were revealed. The SNPs linked to the promising genes identified in the study can be used for marker-assisted selection.

Preprint ARTICLE | doi:10.20944/preprints201705.0157.v1

MODIS Retrieval of Aerosol Optical Depth over Turbid Coastal Water

Yi WANG, Jun Wang, Robert C Levy, Xiaoguang Xu, Jeffrey S Reid

Subject: Environmental And Earth Sciences, Atmospheric Science And Meteorology Keywords: AOD; coastal water; MODIS; retrieval

Online: 22 May 2017 (05:53:30 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202101.0201.v1

Public Housing in the Global Cities: Hong Kong and Singapore at the Crossroads

Anutosh Das

Subject: Social Sciences, Urban Studies And Planning Keywords: Public Housing; Housing Affordability; Global Cities; Subsidized Ownership; Demand-Side Policies; Social-Welfare

Online: 11 January 2021 (14:35:49 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201703.0106.v1

Decision Optimization for Power Grid Operating Condition with High and Low Voltage Parallel Loops

Dong Yang, Kang Zhao, Hao Tian, Yutian Liu

Subject: Engineering, Electrical And Electronic Engineering Keywords: parallel loop; line switching; complex network theory; GN algorithm; comprehensive evaluation model

Online: 15 March 2017 (18:00:36 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201609.0034.v1

Antidermatophytic Activity of the Fruticose Lichen Usnea orientalis

Ashutosh Pathak, Anupam Dikshit

Subject: Medicine And Pharmacology, Pharmacology And Toxicology Keywords: antidermatophytic; dermatophytes; DPPH; Lichen

Online: 9 September 2016 (07:44:48 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201612.0088.v1

A Weakly Pareto Compliant Quality Indicator

Emanuele Dilettoso, Santi Agatino Rizzo, Nunzio Salerno

Subject: Computer Science And Mathematics, Data Structures, Algorithms And Complexity Keywords: multiple criteria analysis; algorithms performance; Pareto optimality; quality indicator

Online: 16 December 2016 (08:31:29 CET)

Show abstract| Download PDF| Share

Preprint REVIEW | doi:10.20944/preprints201608.0161.v1

Recycling of Rolling Stocks

Rafael Favoretto Silva, Sakdirat Kaewunruen

Subject: Engineering, Civil Engineering Keywords: railway; trains; rolling stocks; recycling; reuse; life cycle; environmental benefit

Online: 17 August 2016 (11:25:48 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201906.0199.v1

Total Bond Order Density as a Quantum Mechanical Metric for Materials Design: Application to Chalcogenide Crystals

Sahib Hasan, Khagendra Baral, Wai-Yim Ching

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: Chalcogenide crystals, electronic structure, optical properties, mechanical properties, total bond order density, density functional theory.

Online: 20 June 2019 (11:40:05 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201902.0047.v1

Handbook for Surface Flow Velocity Measurement

Borbala Hortobagyi, Matthew T. Perks, Andrew J. Russell, Alejandro Dussaillant

Subject: Computer Science And Mathematics, Computer Science Keywords: flow surface velocity; handbook; non-contact river monitoring; low-cost; real-time

Online: 5 February 2019 (10:01:28 CET)

Show abstract| Download PDF| Supplementary Files| Share

Preprint ARTICLE | doi:10.20944/preprints201703.0162.v1

Evaluation of the Effects of Airborne Particulate Matter on Bone Marrow-Mesenchymal Stem Cells (BM-MSCs): Cellular, Molecular and Systems Biological Approaches

Muhammad Abu-Elmagd, Mansour A Alghamdi, Magdy Shamy, Mamdouh I Khoder, Max Costa, Mourad Assidi, Roaa Kadam, Haneen Alsehli, Mamdooh Gari, Peter Natesan Pushparaj, Gauthaman Kalamegam, Mohammed Al-Qahtani

Subject: Medicine And Pharmacology, Pathology And Pathobiology Keywords: Particulate matter; BM-MSCs; cell proliferation; cell death; qRT-PCR; IPA

Online: 20 March 2017 (16:33:56 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201612.0075.v1

An Original Application of Image Recognition Based Location in Complex Indoor Environment

Filiberto Chiabrando, Youngsu Cho, Vincenzo Di Pietra, Andrea Lingua, Juil Jeon

Subject: Environmental And Earth Sciences, Remote Sensing Keywords: image recognition bases location; indoor positioning; RGB-D images; LiDAR; DataBase; mobile computing; image retrieval

Online: 15 December 2016 (07:17:35 CET)

Show abstract| Download PDF| Share

Working Paper ARTICLE

Theory; A Connection between Newton’s Law and Coulomb’s Law?

Christopher Pilot

Subject: Physical Sciences, Acoustics Keywords: Winterberg Model, Extended Gravity Model, Gravitational Susceptibility Model, Cosmic Vacuum Model, Dark Energy, Dark Matter

Online: 16 February 2021 (13:40:55 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201711.0163.v1

A Hybrid MCDM Technique for Risk Management in Construction Projects

Kajal Chatterjee, Edmundas Kazimieras Zavadskas, Jolanta Tamošaitienė, Krishnendu Adhikary, Samarjit Kar

Subject: Engineering, Civil Engineering Keywords: D number, Analytical Network Process (ANP), MABAC, Multi-criteria decision making (MCDM), Consistent fuzzy preference relation (CFPR), Construction project risk, Risk Management

Online: 24 November 2017 (16:46:59 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201904.0232.v1

A Machine Learning Approach for the Discovery of Ligand-specific Functional Mechanisms of GPCRs

Ambrose Plante, Derek M. Shore, Giulia Morra, George Khelashvili, Harel Weinstein

Subject: Biology And Life Sciences, Biophysics Keywords: functional selectivity; biased ligands; molecular dynamics; deep neural networks; sensitivity analysis; pharmacological efficacy

Online: 22 April 2019 (10:54:24 CEST)

Show abstract| Download PDF| Share

Preprint REVIEW | doi:10.20944/preprints201705.0019.v1

Profile of Surrounding MicroRNAs in Low Density Lipoprotein Uptake

Maria Elisabete Silva Santos, Ricardo Sousa De Oliveira Paraense, Eric Artur Cortinhas-Alves, Danilo Leôncio Aguiar Pereira

Subject: Biology And Life Sciences, Immunology And Microbiology Keywords: surrounding microRNAs; low-density lipoprotein; atherosclerosis; APOB; PCSK9; LDLR

Online: 1 May 2017 (11:30:17 CEST)

Show abstract| Download PDF| Share

Preprint REVIEW | doi:10.20944/preprints201901.0170.v1

Dysbiosis Promotes Gastric Diseases and Impede Therapies by Hijacking Gut Immune Homeostasis

Devinder Toor, Mishi Wsson, Chavi Goel, Naveen Kumar Kaushik, Prashant Kumar, Singh Sandhya, G. Karthikeyan, Anil Kumar, Hridayesh Prakash

Subject: Medicine And Pharmacology, Pathology And Pathobiology Keywords: gut microbiota; macrophages; TLR mimicry; immunoepigenetics; metabolism; sterile inflammation

Online: 17 January 2019 (03:05:26 CET)

Show abstract| Download PDF| Share

Preprint REVIEW | doi:10.20944/preprints201908.0257.v1

Review of the Efficacy of UVC for Surface Decontamination

Abba Elgujja, HAifa Humaidan Altalhi, Salah Ezreqat

Subject: Medicine And Pharmacology, Other Keywords: surface decontamination; UVC; UV light technology; environmental disinfection

Online: 25 August 2019 (16:55:50 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202308.1433.v2

An Update on the Link between COVID-19 Vaccination and Mortality

Jarle Aarstad

Subject: Public Health And Healthcare, Public, Environmental And Occupational Health Keywords: COVID-19; full vaccination; booster vaccination; all-cause mortality; excess mortality

Online: 28 August 2023 (09:48:47 CEST)

Show abstract| Download PDF| Share

Preprint CONCEPT PAPER | doi:10.20944/preprints202004.0158.v1

How studies on inflamm-aging may help to understand and combat COVID-19 pandemic.

Gianluca Storci

Subject: Biology And Life Sciences, Immunology And Microbiology Keywords: Covid-19; SARS-CoV-2; Inflamm-aging; mtDNA; Telomere; Inflammation

Online: 9 April 2020 (14:43:41 CEST)

Show abstract| Download PDF| Share

More than 1,000,000 confirmed cases of COVID-19 have been registered worldwide since the beginning of the pandemic in Wuhan on December 2019. The high mortality rate of COVID-19 is associated with age, gender and the presence of comorbidities. Biochemical data have shown that COVID-19 patients develop a local and systemic hyper-inflammatory response associated with poor outcome. Therefore, the understanding of the biological mechanisms underlying SARS-CoV-2-induced inflammation is a compelling need. Following this reasoning, here we will focus on the importance of the progressive age-related development of a pro-inflammatory state (aka inflamm-aging) in the understanding of the unbalanced inflammatory response against SARS-CoV-2 in aged people. In particular, we underpin the role of mitochondrial DNA and genomic DNA telomeric sequences in local and systemic mechanisms of inflammation. Indeed, the leakage of mtDNA out of its natural compartment (i.e. the mitochondrion), into the cytoplasm and in the extracellular environment is a powerful trigger of innate immunity and inflammation, as part of an evolutionary-conserved signaling mechanism of cellular damage (e.g. viral infection). High levels of circulating mtDNA are increased in aged people and set up as inflammatory markers of poor prognosis in intensive care unit patients. In turn, telomeric DNA, which can be released into the cytoplasm and in the extracellular environment upon cell damage, has been proven to exert potent anti-inflammatory activity. Since that aged people (particularly those affected by co-morbidity) are equipped with shortened telomeres, we posit that, in aged people affected by COVID-19 the release of mtDNA, coupled with insufficient telomeric DNA favors the onset of a detrimental inflammatory response. In this regard, we highlight that the mechanism of action of some currently used drugs, as well as potential new ones may be better understood under the light of the above-depicted theoretical framework thus explaining how studies on inflamm-aging may help to understand and combat COVID-19 pandemic.

Preprint ARTICLE | doi:10.20944/preprints201612.0084.v1

Explicit Exact Solutions to Some One Dimensional Conformable Time Fractional Equations

Alper Korkmaz

Subject: Computer Science And Mathematics, Applied Mathematics Keywords: modified Kudryashov method; conformable time fractional RLW-Burgers Equation; conformable time fractional potential KdV Equation; conformable time fractional CRWP equation; conformable derivative

Online: 16 December 2016 (08:01:56 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202007.0132.v1

SARS-CoV19-2 Spike Protein Mutation Patterns: A Global Scenario

Renukaradhya K. Math, Mallikarjun Goni, Palaksha K. Javaregowda, Ajay S. Khandagale, AjayKumar Oli

Subject: Biology And Life Sciences, Biology And Biotechnology Keywords: coronavirus; spike protein; database; sequence alignment; mutation; homology model; hydrophobic amino acids

Online: 7 July 2020 (16:49:04 CEST)

Show abstract| Download PDF| Supplementary Files| Share

Preprint ARTICLE | doi:10.20944/preprints202109.0306.v1

Growth and Hierarchy of Cities in Algeria: Application of the Rank-Size Rule

Ahmed Bousmaha, Salah Zeraib, Nassira Benhassine, Yacine Kouba

Subject: Social Sciences, Urban Studies And Planning Keywords: urbanization; urban growth urban hierarchy; urban system

Online: 17 September 2021 (11:22:00 CEST)

Show abstract| Download PDF| Share

Preprint REVIEW | doi:10.20944/preprints202004.0087.v1

While We Wait for a Vaccine Against SARS-CoV-2, Why Not Think About Available Drugs?

Francisco J. Barrantes

Subject: Medicine And Pharmacology, Pulmonary And Respiratory Medicine Keywords: Coronavirus; COVID-19; SARS-CoV-2; design drugs; ACE2; prophylaxis

Online: 7 April 2020 (11:02:13 CEST)

Show abstract| Download PDF| Share

At the time of reception of this article (April 2, 2020), efforts to develop a specific vaccine against SARS-Cov-2, the causative agent of the coronavirus disease 2019 (COVID-19), had just begun trial phase 1, but full validation of this and other current developments is likely to take many more months to reach completion. The ongoing pandemic constitutes a major health burden of world proportions that is also having a devastating impact on whole economies worldwide, the knock-on effects of which could be catastrophic especially in poorer countries. Alternative measures to ameliorate the impact and hamper or minimally slow down disease progression are urgently called for. This review discusses past and currently evolving data on the etiological agent of the current pandemic, SARS-CoV-2, and its host cell receptors with a view to disclosing alternative drugs for palliative or therapeutic approaches. Firstly, SARS-CoV-2 exhibits marked tropism for cells that harbor the membrane-bound metalloprotease angiotensin-converting enzyme 2 (ACE2) at their plasmalemma, predominantly in cells lining the oral cavity, upper respiratory tract, and bronchoalveolar cells, making these epithelial mucosae the most likely viral receptor cell targets and entry routes. Secondly, the crystal structures of several coronavirus spike proteins in complex with their cell host target receptors, and of SARS-Cov-2 in complex with an inhibitor, are now available at atomic resolution through X-ray diffraction and cryo-electron microscopy studies. Thirdly, viral entry of other viruses has been successfully blocked by inhibiting viral endogenous proteases or clathrin/dynamin-dependent endocytosis, the same internalization pathway followed by ACE2 and some viruses. Fourthly, the target cell-surface receptor molecules and SARS-CoV-2 possess other putative sites for drugs potentially modulating receptor activity or virus processing. A multi-pronged pharmacological approach attacking more than one flank of the viral-receptor interactions is worth considering as a front-line strategy.

Preprint ARTICLE | doi:10.20944/preprints201902.0011.v1

Eradicating Metastatic Cancer and the Evolutionary Dynamics of Extinction

Robert Gatenby, Joel S. Brown

Subject: Medicine And Pharmacology, Oncology And Oncogenics Keywords: Cancer treatment, resistance to treatment, evolution of resistance, background extinctions

Online: 1 February 2019 (10:29:06 CET)

Show abstract| Download PDF| Share

Preprint HYPOTHESIS | doi:10.20944/preprints202003.0238.v1

A Feedback Loop Between Human Self-Domestication and Dog Domestication Contributing to Language Evolution?

Antonio Benítez-Burraco, Daniela Pörtl, Christoph Jung

Subject: Social Sciences, Behavior Sciences Keywords: dog domestication; human self-domestication; aggression; prosociality; language evolution; cognitive disorders

Online: 15 March 2020 (02:24:16 CET)

Show abstract| Download PDF| Share

Preprint REVIEW | doi:10.20944/preprints202007.0181.v1

Insights into the Nigerian COVID19 Outbreak

Chinedu Ugwu, Adewole Adekola, Opeoluwa Adewale Fasoro, Oyebola Oyesola, Jonathan Heeney, Christian Happi

Subject: Medicine And Pharmacology, Epidemiology And Infectious Diseases Keywords: Nigeria; disease drivers; public health; COVID19

Online: 9 July 2020 (10:49:11 CEST)

Show abstract| Download PDF| Supplementary Files| Share

Preprint ARTICLE | doi:10.20944/preprints202005.0118.v2

The Mechanical Basis of Memory - the MeshCODE Theory

Benjamin T. Goult

Subject: Biology And Life Sciences, Biochemistry And Molecular Biology Keywords: Memory; talin; mechanobiology; information-processing; MeshCODE; brain; neuroscience; integrin; learning; cytoskeleton; REM sleep; vinculin; actin

Online: 22 October 2020 (05:40:50 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202005.0285.v1

Clinical, Laboratory, and Radiological Features Indicative of Novel Coronavirus Disease (COVID-19) in Emergency Departments – A Multicentre Case-Control Study in Hong Kong

Rex Pui Kin Lam, Kevin Kei Ching Hung, Eric Ho Yin Lau, Chun Tat Lui, Kin Ling Chan, Chin San Leung, Ion Wa Wong, Kin Wa Wong, Colin A. Graham, Patrick Chiu Yat Woo

Subject: Medicine And Pharmacology, Epidemiology And Infectious Diseases Keywords: COVID-19; SARS-CoV-2; emergency department; early diagnosis; case-control studies

Online: 17 May 2020 (08:27:12 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202212.0240.v1

Proposal for a National Diagnostics Action Plan for the United States

Gigi Gronvall, Sujeet Rao, Susan Van Meter, Adam Borden, Tom Inglesby

Subject: Public Health And Healthcare, Health Policy And Services Keywords: diagnostics, manufacturing, pandemic preparedness,

Online: 14 December 2022 (01:17:31 CET)

Show abstract| Download PDF| Share

Rapidly providing a definitive diagnostic test that can be used broadly by healthcare providers and members of the public in the setting of a disease emergency is critical to limit pathogen spread, develop and deploy medical countermeasures, and mitigate the social and economic harms of a serious epidemic or pandemic. There is extraordinary expertise within and outside of government working on these issues, and major accomplishments have been made to accelerate test development, expand laboratory testing capacity, and establish widespread point-of-care testing. Still, the United States does not have a plan to rapidly respond, to develop, manufacture, or deploy at national scale diagnostic testing in the earliest days of a new infectious disease crisis. Nor does the nation have a plan to sustain testing capacity at high volume over the course ofan enduring epidemic or pandemic. To address this gap, we are proposing a National Diagnostics Action Plan that describes the steps that are urgently needed to prepare for future infectious disease emergencies, as well as the actions we must take at the first signs of such events. These recommendations require substantial collaboration between the US government (USG) and the private sector to solve a series of challenges now, as well as to prepare for the massive and rapid scale-up of laboratory and point-of-care test development and testing capacity in future emergencies. The recommendations include establishing pre-event contracts; ensuring rapid access to clinical samples; creating a permanent public-private testing coordinating body to allow for rapid information sharing and improved cooperation among the USG, test developers, and clinical laboratories; and accelerating testing rollout at the beginning of an event—andthus, the effective public health management of a disease crisis. These recommendations were informed by extensive discussion with people who managed the COVID-19 and monkeypox responses, review of past reports written on diagnostic challenges, and the experiences of the authors.

Preprint REVIEW | doi:10.20944/preprints202104.0022.v1

Immunomodulation as a Potent COVID-19 Pharmacotherapy: Past, Present and Future

Decsa Medika Hertanto, Henry Sutanto, Citrawati Dyah Kencono Wungu

Subject: Medicine And Pharmacology, Immunology And Allergy Keywords: COVID-19; immunomodulation; immunology; immune system; pharmacotherapy; coronavirus; drug repurposing

Online: 1 April 2021 (13:34:49 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201902.0154.v1

Deforestation, Climate Change and Food Security Nexus in Sub-Sahara Africa: Content Analysis

Dastan Bamwesigye, Petra Hlavackova, Samuel Antwi Darkwah, Nahanga Verter

Subject: Environmental And Earth Sciences, Environmental Science Keywords: Access, availability, climate change, deforestation, drought, food security, SSA

Online: 18 February 2019 (10:16:03 CET)

Show abstract| Download PDF| Share

Preprint REVIEW | doi:10.20944/preprints202108.0152.v1

Plant-Derived Saponins: A Review of Their Surfactant Properties and Applications

Summi Rai, Eliza Acharya, Ananda Kafle, Hari Prasad Devkota, Ajaya Bhattarai

Subject: Biology And Life Sciences, Plant Sciences Keywords: Natural surfactants; plants; saponins; eco-friendly; synthetic surfactants

Online: 6 August 2021 (08:15:01 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202101.0501.v3

An Exact Solution to the Free Vibration Analysis of a Uniform Timoshenko Beam Using a Moment-Shear Force-Circular Frequency-Curvature Relationship

Valentin Fogang

Subject: Physical Sciences, Applied Physics Keywords: Timoshenko beam; rotary inertia; moment shear force circular frequency curvature relationship; spring mass system; closed-form solutions; first-order dynamic stiffness matrix; second-order vibration analysis

Online: 7 October 2022 (10:34:31 CEST)

Show abstract| Download PDF| Supplementary Files| Share

Preprint ARTICLE | doi:10.20944/preprints201704.0014.v1

An Elaborated Study of CO Sensitivities of Cu, Pt and Pd Activated SnO₂ Sensors: Effect of Precipitation Agents, Dopants and Doping Methods

Venkata Krishna Karthik Tangirala, Heberto Gomez-Pozos, Ventura Rodríguez-Lugo, María De La Luz Olvera

Subject: Chemistry And Materials Science, Nanotechnology Keywords: tin oxide pellets; doping; HRTEM analysis; CO; sensitivity

Online: 4 April 2017 (08:16:13 CEST)

Show abstract| Download PDF| Supplementary Files| Share

Preprint ARTICLE | doi:10.20944/preprints202005.0176.v1

Epidemic Peak for COVID-19 in India, 2020

Chaitanya S. Wagh, Parikshit N. Mahalle, Sanjeev J. Wagh

Subject: Computer Science And Mathematics, Computer Science Keywords: COVID-19; epidemic diseases; compartmental model; prediction

Online: 10 May 2020 (17:10:15 CEST)

Show abstract| Download PDF| Share

Preprint COMMUNICATION | doi:10.20944/preprints202101.0573.v1

Systematic Organization of COVID-19 Data Supported by the Adverse Outcome Pathway Framework

Penny Nymark, Magdalini Sachana, Sofia Batista-Leite, Jukka Sund, Catharine E Krebs, Kristie Sullivan, Stephen Edwards, Laura Viviani, Kate Willett, Brigitte Landesmann, Clemens Wittwehr

Subject: Medicine And Pharmacology, Immunology And Allergy Keywords: Adverse Outcome Pathways; COVID-19; mechanisms; systematic organization; interdisciplinary

Online: 27 January 2021 (17:01:44 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202007.0646.v1

Classification of Google Play Store Application Reviews Using Machine Learning

Abdul Karim, Azhari Azhari, Meshrif Alruily, Hamza Aldabbas, Samir Brahim Belhaouri, Ali Adil Qureshi

Subject: Computer Science And Mathematics, Computer Science Keywords: Machine Learning; Natural Language Processing; Text Mining; Semantic Analysis; Scraping; Google Play Store; Rating

Online: 26 July 2020 (17:11:09 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201907.0006.v1

Fuzzy-Based Sentiment Analysis System for Analyzing Student Feedback and Satisfaction

Muhammad Zubair Asghar, Ikram Ullah, Shahab Shamshirband, Fazal Masud Kundi, Ammara Habib

Subject: Computer Science And Mathematics, Applied Mathematics Keywords: student feedback analysis; sentiments opinion words; polarity shifters; lexicon-based

Online: 1 July 2019 (11:17:37 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201902.0055.v1

Effects of Double Reduction and Annealing on the Texture during Continuous Rolling of Ultrathin Sheets of Low Carbon Steels

Laura G. Castruita-Avila, Francisco A. García-Pastor, Manuel de J. Castro-Roman, Jesus Emilio Camporredondo-Saucedo, Fabián Equihua-Guillen, Jimy Unfried-Silgado

Subject: Chemistry And Materials Science, Metals, Alloys And Metallurgy Keywords: Cold Rolling, Texture, EBSD, ultrathin sheet.

Online: 5 February 2019 (15:54:22 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202310.1055.v1

A Roadmap for Integrating Automation with Process Optimization for AI-powered Digital Transformation

Abdulaziz Aldoseri, Khalifa Al-Khalifa, Abdelmagid Hamouda

Subject: Engineering, Industrial And Manufacturing Engineering Keywords: AI-Powered Digital Transformation; Process Automation; Process Optimization

Online: 17 October 2023 (09:25:35 CEST)

Show abstract| Download PDF| Share

Preprint CONCEPT PAPER | doi:10.20944/preprints202312.1892.v1

Epigenetic Clocks and Programmatic Aging

David Gems, Roop Singh Virk, João Pedro de Magalhães

Subject: Biology And Life Sciences, Aging Keywords: aging, development, epigenetics, hyperfunction, methylation clocks, programmatic theory

Online: 26 December 2023 (11:31:44 CET)

Show abstract| Download PDF| Share

Preprint REVIEW | doi:10.20944/preprints202102.0265.v1

Current Advances in Therapeutic Peptides: Past and Future Trends

Ramachandran Chelliah, Eric Banan-Mwine Daliri, Fazle Elahi, Su-Jung Yeon, Akanksha Tyagi, Deog-Hwan Oh

Subject: Biology And Life Sciences, Biochemistry And Molecular Biology Keywords: Peptides; Clinical Practice; Drug Therapy; Therapeutic

Online: 10 February 2021 (15:51:13 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201706.0036.v1

Two-Factor Authentication and Its Adaptation to Online Education Systems

Elif Karakaş, İlhan Öztozlu, Volkan Erol

Subject: Computer Science And Mathematics, Information Systems Keywords: two-factor authentication; online training; biological and behavioral features; mimic control method with sound intensity

Online: 6 June 2017 (09:04:47 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201901.0224.v1

Improving Soil Moisture Estimates Over the Contiguous US Using Satellite Retrievals and Ensemble Based Data Assimilation Techniques

Jostein Blyverket, Paul D. Hamer, Laurent Bertino, Clément Albergel, David Fairbairn, William A. Lahoz

Subject: Environmental And Earth Sciences, Soil Science Keywords: land data assimilation; EnKF; EnOI; SMAP; SMOS; ESA CCI

Online: 22 January 2019 (12:33:58 CET)

Show abstract| Download PDF| Share

A number of studies have shown that assimilation of satellite derived soil moisture using the ensemble Kalman Filter (EnKF) can improve soil moisture estimates, particularly for the surface zone. However, the EnKF is computationally expensive since an ensemble of model integrations have to be propagated forward in time. Here, assimilating satellite soil moisture data from the Soil Moisture Active Passive (SMAP) mission, we compare the EnKF with the computationally cheaper ensemble Optimal Interpolation (EnOI) method over the contiguous United States (CONUS). The background error-covariance in the EnOI is sampled in two ways: i) by using the stochastic spread from an ensemble open-loop run, and ii) sampling from the model spinup climatology. Our results indicate that the EnKF is only marginally superior to one version of the EnOI. Furthermore the assimilation of SMAP data using the EnKF and EnOI is found to improve the surface zone correlation with in-situ observations at a 95% significance level. The EnKF assimilation of SMAP data is also found to improve root-zone correlation with independent in-situ data at the same significance level; however this improvement is dependent on which in-situ network we are validating against. We evaluate how the quality of the atmospheric forcing affects the analysis results by prescribing the land surface data assimilation system with either observation corrected or model derived precipitation. Surface zone correlation skill increases for the analysis using both the corrected and model derived precipitation, but only the latter shows an improvement at the 95% significance level. The study also suggest that the EnOI can be used for bias-correction of the atmospheric fields where post-processed data are not available. Finally, we assimilate three different Level-2 satellite derived soil moisture products from ESA Climate Change Initiative (CCI), SMAP and SMOS (Soil Moisture and Ocean Salinity) using the EnOI, and then compare the relative performance of the three resulting analyses against in-situ soil moisture observations. In this comparison, we find that all three analyses offer improvements over an open-loop run when comparing to in-situ observations. The assimilation of SMAP data is found to perform marginally better than the assimilation of SMOS data, while assimilation of the ESA CCI data shows the smallest improvement of the three analysis products.

Preprint ARTICLE | doi:10.3390/sci1020047

On Mautner-Type Probability of Capture of Intergalactic Meteor Particles by Habitable Exoplanets

Andjelka Kovacevic

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: intergalactic meteor particle; extrasolar planets; astrobiology

Online: 9 August 2019 (00:00:00 CEST)

Show abstract| Share

Preprint ARTICLE | doi:10.20944/preprints201704.0142.v1

Retrospective Proteomic Screening of 100 Breast Cancer Tissues

Ida Pucci-Minafra, Gianluca Di Cara, Rosa Musso, Patrizia Cancemi, Nadia Ninfa Albanese, Elena Roz, Salvatore Minafra

Subject: Medicine And Pharmacology, Oncology And Oncogenics Keywords: breast cancer; surgical tissues; gel-based proteomics; mass spectrometry; protein clustering

Online: 24 April 2017 (05:14:06 CEST)

Show abstract| Download PDF| Supplementary Files| Share

Preprint REVIEW | doi:10.20944/preprints202006.0256.v1

Cell Types, Morphology and Evolution of Animal Excretory Organs

Carmen Andrikou, Ludwik Gąsiorowski, Andreas Hejnol

Subject: Biology And Life Sciences, Animal Science, Veterinary Science And Zoology Keywords: cell types; nephridia; excretion; ultrafiltration; development

Online: 21 June 2020 (10:47:26 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201701.0060.v1

Quasi-Interpolation Operators for Bivariate Quintic Spline Spaces and Their Applications

Rengui Yu, Chungang Zhu, Xianmin Hou, Li Yin

Subject: Computer Science And Mathematics, Mathematics Keywords: bivariate spline space; quasi-interpolation operator; type-2 triangulation 3; burgers’ equations; image reconstruction

Online: 12 January 2017 (10:04:06 CET)

Show abstract| Download PDF| Share

Preprint REVIEW | doi:10.20944/preprints202006.0301.v1

Nanotechnology as an Alternative to Reduce the Spread of COVID-19

Roberto Vazquez-Munoz, Jose L. Lopez-Ribot

Subject: Chemistry And Materials Science, Nanotechnology Keywords: Nanotechnology; Nanomaterials; Antiviral; Sanitizers; Nanomedicine; Infectious Diseases; COVID-19

Online: 24 June 2020 (14:21:10 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201904.0107.v1

Light-Induced Stress as a Primary Evolutionary Driver of Eye Origins

Andrew J. M. Swafford, Todd H. Oakley

Subject: Biology And Life Sciences, Neuroscience And Neurology Keywords: evolution; eyes; stress; UV; plasticity

Online: 9 April 2019 (11:48:23 CEST)

Show abstract| Download PDF| Share

Eyes are quintessential complex traits and our understanding of their evolution guides understanding of trait evolution in general. A long-standing account of eye evolution argues natural selection favors morphological variations that allow increased functionality for sensing light (Darwin 1859; v. Salvini-Plawen and Mayr 1977; Nilsson and Pelger 1994; Nilsson 2013). While certainly true in part, this focus on visual performance does not entirely explain why diffuse photosensitivity persists even after eyes evolve, or why eyes evolved many times, each time using similar building blocks. Here we briefly review a vast literature indicating most genetic components of eyes historically responded to stress caused directly by light, including UV damage of DNA, oxidative stress, and production of aldehydes. We propose light-induced stress had a direct and prominent role in the evolution of eyes by bringing together genes to repair and prevent damage from light-stress, both before and during the evolution of eyes themselves. Stress-repair and stress-prevention genes were perhaps originally deployed as plastic responses to light and/or as beneficial mutations genetically driving expression where light was prominent. These stress-response genes sense, shield, and refract light but only under UV exposure. Once under regulatory-genetic control, they could be expressed before UV stress appeared, evolve as a single unit, and be influenced by natural selection to increase functionality for sensing light, ultimately leading to complex eyes and behaviors. Recognizing the potentially prominent role of stress in eye evolution invites discussions of plasticity and assimilation and provides a hypothesis for why similar genes are repeatedly used in convergent eyes. Broadening the drivers of eye evolution encourages consideration of multi-faceted mechanisms of plasticity/assimilation and mutation/selection for complex novelties and innovations in general.

Preprint REVIEW | doi:10.20944/preprints202105.0188.v1

A Review on Perovskite/Silicon Tandem Solar Cells

Shivani Chauhan, Rachna Singh

Subject: Engineering, Automotive Engineering Keywords: power conversion efficiency (PCE); perovskite/silicon; 2T; 3T; 4T

Online: 10 May 2021 (13:12:06 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201902.0039.v1

Modeling Volatility of Nigeria Stock Exchange Using Multivariate GARCH Models

Monday Osagie Adenomon, John Joseph Mbuk, Haruna Umar Yahaya

Subject: Computer Science And Mathematics, Probability And Statistics Keywords: Volatility; Stocks; Persistence; Exchange Rate, Inflation Rate; Financial Time Series; Generalized Autoregressive Conditional Heteroscedasticity (GARCH); Multivariate GARCH (MGARCH)

Online: 4 February 2019 (14:56:07 CET)

Show abstract| Download PDF| Share

Preprint CONCEPT PAPER | doi:10.20944/preprints202108.0326.v1

Before the Next COP: How to Stop Missing our Environmental Policy Targets

Claude A. Garcia, Sini Savilaakso, René W. Verburg, Natasha Stoudmann, Philip Fernbach, Steven A. Sloman, Garry D. Peterson, Miguel B. Araújo, Jean-François Bastin, Laurence Boutinot, Hélène Dessard, Anne Dray, Scott Francisco, Jaboury Ghazoul, Laurène Feintrenie, Fritz Kleinschroth, Babak Naimi, Ivan P. Novotny, Johan Oszwald, Stephan A. Pietsch, Fabien Quétier, Brian E. Robinson, Marieke Sassen, Plinio Sist, Terry Sunderland, Cédric Vermeulen, Lucienne Wilmé, Sarah J. Wilson, Francisco Zorondo Rodríguez, Patrick O. Waeber

Subject: Environmental And Earth Sciences, Environmental Science Keywords: Agency, Transition, Cognition, Land-use change, Games, Democracy

Online: 16 August 2021 (17:09:08 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201612.0146.v1

Are Pharmacy Graduates from an Indonesian University Prepared to Deliver Patient Care?

Desak Ernawati, Ya Ping Lee, Bruce Sunderland, Jeff Hughes

Subject: Public Health And Healthcare, Nursing Keywords: pharmacy graduates; preparedness; patient care; Indonesia

Online: 30 December 2016 (06:12:04 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201704.0067.v1

Strategies for the Simulation of Sea Ice Organic Chemistry: Arctic Tests and Development

Scott Elliott, Nicole Jeffery, Elizabeth Hunke, Clara Deal, Meibing Jin, Shanlin Wang, Emma Elliott Smith, Samantha Oestreicher

Subject: Environmental And Earth Sciences, Geography Keywords: ice algae; brine channels; organic chemistry; Arctic sea ice; CICE model; mechanism development; biomacromolecules

Online: 12 April 2017 (05:12:28 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201709.0119.v1

Lp16-PSP, A Member of YjgF/YER057c/UK114 Protein Family Induces Apoptosis and p21WAF1/CIP1 Mediated G1 Cell Cycle Arrest in Human Acute Promyelocytic Leukemia (APL) HL-60 Cells

Thomson Patrick Joseph, Warren Chanda, Abdullah Faqeer Mohammad, Sadia Kanwal, Samana Batool, MeiShan Zhang, MinTao Zhong, Min Huang

Subject: Biology And Life Sciences, Biochemistry And Molecular Biology Keywords: lentinula edodes; Lp16-PSP; acute promyeloid leukemia; extrinsic and lntrinsic apoptotic pathway; G1 phase cell cycle arrest

Online: 25 September 2017 (08:53:12 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201610.0031.v1

The Solvency II Standard Formula, Linear Geometry, and Diversification

Joachim Paulusch

Subject: Business, Economics And Management, Finance Keywords: Solvency II; standard formula; risk measure; diversification; aggregation; monotony; homogeneity; subadditivity; Euler’s principle; capital allocation

Online: 10 October 2016 (11:53:00 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202108.0128.v1

Effect of Graphene Oxide and Multi-Walled Carbon Nanotubes on the Structure and Properties of Pitch Derived Carbon Foam Composites

Amjad Hussain, Muhammad Khan, Ammara Nawaz, Li Tiehu, Amir Zada, Hidayat Hussain, Muhammad Imran, Nusrat Hussain, Asif Hayat, Ataf Ali Altaf, Ikram Ahmad, Hassan Fauad, Yaser H.A. Elewa, Gaber El-Saber Batiha

Subject: Chemistry And Materials Science, Biomaterials Keywords: Carbon foam; multi walled carbon nanotubes; Graphene oxide; electrical; mechanical and thermal properties

Online: 5 August 2021 (08:36:50 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201611.0065.v1

Modeling the Influence of River Bed Reconstruction on a River Stage Using a Two-Dimensional/Three-Dimensional Hydrodynamic Model

Wei-Bo Chen, Wen-Cheng Liu

Subject: Engineering, Civil Engineering

Online: 11 November 2016 (18:26:38 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201907.0221.v1

The Role of Management Information Systems in the Financial Crisis of a Developing Economy

Richmond Kwesi Ansah, Kwabena Obiri-Yeboah, Patrick Bimpomg, Grace Akipelu

Subject: Business, Economics And Management, Finance Keywords: financial crisis; management information system; financial system; confidence level

Online: 19 July 2019 (07:59:58 CEST)

Show abstract| Download PDF| Share

Preprint REVIEW | doi:10.20944/preprints201801.0058.v1

A Narrative Review on the Human Health Effects of Ambient Air Pollution in Sub-Saharan Africa: An Urgent Need for Health Effects Studies

Eric Coker, Samuel Kizito

Subject: Medicine And Pharmacology, Epidemiology And Infectious Diseases Keywords: ambient air pollution; epidemiology; narrative review; sub-Saharan Africa

Online: 8 January 2018 (09:52:02 CET)

Show abstract| Download PDF| Supplementary Files| Share

Preprint ARTICLE | doi:10.3390/sci1020041

Synthesis, Structural Characterization, and Biological Activities of Organically Templated Cobalt Phosphite (C4N2H14)[Co(H2PO3)4]·2H2O

Najlaa Hamdi, Souad Chaouch, Ivan da Silva, Mohamed Ezahri, Mohammed Lachkar, Rama Alhasan, Ahmad Yaman Abdin, Claus Jacob, Brahim El Bali

Subject: Biology And Life Sciences, Biochemistry And Molecular Biology Keywords: hybrid phosphite; X-rays crystal structure; FTIR; thermal behavior; biological activities; antimicrobial; micro-organisms

Online: 25 July 2019 (00:00:00 CEST)

Show abstract| Share

Preprint ARTICLE | doi:10.20944/preprints201702.0082.v1

On the Stabilization for Laminated Beam with Infinite Memory and Different Speeds of Wave Propagation

Gang Li, Xiangyu Kong

Subject: Computer Science And Mathematics, Applied Mathematics Keywords: general stability; laminated beam; infinite memory; multiplier technique; energy method

Online: 22 February 2017 (16:56:19 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201705.0087.v1

Development of a GIS Tool for a High Precision PV Degradation Monitoring and Supervision: Feasibility Analysis in Large and Small PV Plants

Miguel De Simón-Martín, Ana-María Diez-Suárez, Laura Álvarez-de Prado, Alberto González-Martínez, Álvaro De La Puente-Gil, Jorge Blanes-Peiró

Subject: Engineering, Energy And Fuel Technology Keywords: photovoltaics; PV plants; PV faults; Geographic Information System; PV supervision and maintenance

Online: 10 May 2017 (04:24:13 CEST)

Show abstract| Download PDF| Supplementary Files| Share

It is well known that working PV plants show several maintenance needs due to wiring and modules degradation, mismatches, dust and PV cells defects and faults. There are a wide range of studies that show the theoretical and some laboratory tests of how these circumstances may affect the PV production. Thus, it results mandatory to evaluate the whole PV plant performance and, then, it’s payback time, profitability and environmental impact or carbon footprint. However, very few studies include a systematic procedure to quantify and supervise the real degradation effects and faults impacts on the field. In this paper, the authors first conduct a brief review of the most frequent PV faults and degradation that can be found on real conditions operative PV Plants. Then, they propose and develop an innovative Geographic Information System application to locate and supervise them. The designed tool has been applied to either a large PV plant of 108 kWp and a small PV plant of just 9 kWp installed on a home rooftop. For the large PV plant, 24 strings of PV modules have been modelized and introduced into the GIS application and every module in the power plant has been studied including voltage, current, power, series and parallel resistance, fill factor, normalized PV curve to STC, thermography and visual analysis. For the small PV installation 3 strings of PV panels have been studied identically. It must be noticed that PV modules in this case include power optimizers. The precision of the study allows the researchers to locate and supervise up to a third part of every PV cell in the system, which are adequately georreferenciated. The developed tool allows both the researchers and the investors to increase control on the PV plant performance and conducts to a better planification of maintenance actuations and to evaluate several PV modules replacement strategies in a preventive maintenance programme. Found PV faults include hot spots, snail tracks, EVA discoloration, PV cells fractures, busbars discoloration, bubbles and Si discoloration.

Preprint ARTICLE | doi:10.20944/preprints202007.0251.v1

RNA-Dependent RNA Polymerase and Spike Protein Mutant Variants of SARS-CoV-2 Predominate in Severely Affected COVID-19 Patients

Subrata K. Biswas, Sonchita R. Mudi

Subject: Biology And Life Sciences, Biochemistry And Molecular Biology Keywords: SARS-CoV-2; COVID-19; Spike protein; Mutant; Genome

Online: 12 July 2020 (12:03:16 CEST)

Show abstract| Download PDF| Supplementary Files| Share

Preprint ARTICLE | doi:10.20944/preprints201705.0155.v1

Fracture Failure Mechanisms of Long Single PA6 Fibers

Huiling Ding, Yongzhen Zhang, Zhitao He

Subject: Chemistry And Materials Science, Polymers And Plastics Keywords: single fiber; cutting; fracture morphology; failure mechanism

Online: 22 May 2017 (05:29:48 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201705.0116.v1

Big-Data-Based Thermal Runaway Prognosis of Battery Systems for Electric Vehicles

Jichao Hong, Zhenpo Wang, Peng Liu

Subject: Engineering, Mechanical Engineering Keywords: thermal runaway; big-data platform; battery systems; electric vehicles; National Service and Management Center for Electric Vehicles

Online: 16 May 2017 (03:18:57 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201801.0046.v2

Influence of Chitosan Treatment on Surrogate Serum Markers of Cholesterol Metabolism in Obese Subjects

Dieter Lütjohann, Milka Marinova, Karsten Wolter, Winfried Willinek, Norman Bitterlich, Martin Coenen, Christoph Coch, Frans Stellaard

Subject: Medicine And Pharmacology, Dietetics And Nutrition Keywords: cholesterol synthesis; bile acid synthesis; cholesterol absorption; lathosterol; plant sterols; oxysterols; lipoproteins; lipid lowering; phytosterols; placebo

Online: 10 January 2018 (10:51:03 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201703.0126.v1

Investigation on Softening Mechanism of 5754 Aluminum Alloy during Multistage Hot Deformation

Chang-Qing Huang, Jie Deng, Si-Xu Wang, Lei-lei Liu

Subject: Chemistry And Materials Science, Metals, Alloys And Metallurgy Keywords: 5754 Aluminum alloy; Two-pass hot compression; Dynamic softening; Metadynamic recrystallization

Online: 16 March 2017 (18:28:52 CET)

Show abstract| Download PDF| Share

Preprint REVIEW | doi:10.20944/preprints202207.0387.v1

Artocarpus Camansi Blanco: A Review on Its Traditional Use, Nutritional Value, Phytochemistry, and Pharmacology

Patrick Joel Bicaldo

Subject: Biology And Life Sciences, Plant Sciences Keywords: Artocarpus; Artocarpus camansi; kamansi; phytochemistry; pharmacology; secondary metabolites

Online: 26 July 2022 (05:52:46 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201608.0025.v2

The Role of Natural Factors on Major Climate Variability in Northern Winter

Indrani Roy

Subject: Environmental And Earth Sciences, Atmospheric Science And Meteorology Keywords: solar variability; NAO; ENSO; volcanic eruptions; multiple regression

Online: 17 May 2017 (06:27:16 CEST)

Show abstract| Download PDF| Share

Preprint REVIEW | doi:10.20944/preprints202004.0045.v1

The Conceptual Framework for SARS-CoV-2 Related Lymphopenia

Ilnaz Rahimmanesh, Shirin Kouhpayeh, Hossein Khanahmad

Subject: Medicine And Pharmacology, Pulmonary And Respiratory Medicine Keywords: SARS-CoV-2; lymphopenia; NAD+ depletion; CD38

Online: 6 April 2020 (09:28:00 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202104.0076.v2

On the Indian Tradition of Mathematical Names: A Scientific Analysis

Ashish Karn, Brett Rosiejka, Pankaj Badoni, Raman Kumar Singh

Subject: Computer Science And Mathematics, Mathematics Keywords: Mathematical names; Hindu mathematical tradition; Indian social psyche; Mathematics and religion; Mathematics and society; Hindu mathematics

Online: 5 April 2021 (14:42:47 CEST)

Show abstract| Download PDF| Share

The current paper explores the potential interlink between names of individuals in a society and its collective social consciousness, particularly with reference to the pervasive occurrence of the ‘mathematical names’ in the current Hindu society in the Indian subcontinent and beyond. Initially, an attempt is made to put things into mathematical perspective by drawing a quick sketch of some of the stellar achievements of the Indian mathematicians. Under the six broad categories of geometry, trigonometry, numeration, arithmetic, algebra, and mathematics in the Vedic tradition, a concise simple description of these subdivisions is presented, underlining the names of the concepts and terms, sometimes by producing the textual references. Then, upon identification of such mathematical terms, an attempt is made to juxtapose these with the names current in the Indian Hindu society. By employing an extensive dataset of university student names in India and the directories of Facebook and LinkedIn, we produce both qualitative and quantitative evidence of the presence of such names in the Indian subcontinent. Evidently, these names reflect the impressions of the tremendously rich mathematical heritage left by the Hindu stalwart mathematicians. This hypothesis has also been examined by taking surveys of people bearing these mathematical names, as well as by documenting the ‘conscious procedures’ that go behind the naming of a Hindu Indian child. In trying to investigate if such a phenomenon is unique to the Indian tradition, a stark contrast with the ‘names in mathematics’ as prevalent in the European mathematical traditions is presented, as cultural roots of mathematics are explored. Further, we ascribe the presence of these names as the extant remains of the colossal impact of multifarious mathematical traditions existing in India. Interestingly, the present research also brings to the fore, certain unseen facets of the Indian Hindu society as regards the education of mathematics to women – through an indirect exploration of their names. We also show that the pervasive occurrence of these names is not merely the result of semantic chance events, but denotes the richness of the Indian mathematical legacy. Next, we also present cross-cultural comparisons to show the uniqueness of Indian mathematical and scientific traditions that led to the pervasiveness of ‘mathematical names’ in India. Finally, an attempt is made to clarify some subtle points on the associations between mathematics and religion in India and other cultures of the world. It is sincerely hoped that the present study may shed light on the cultural roots of mathematics and may furnish a new dimension in the study of mathematics, culture and civilizations across the world.

Preprint ARTICLE | doi:10.20944/preprints201709.0145.v1

Independent Assessment and Benchmarking of no/low cost Finite Element Analysis Software for Linear Static Structural Analysis

Saien Rugdeo, Clinton Bemont, Jean-François Pitot de la Beaujardiere

Subject: Engineering, Mechanical Engineering Keywords: Open source; FEA; finite element analysis; linear static structural; Code Aster; Salome Meca; Mecway; SimScale; Z88, CAE

Online: 28 September 2017 (14:58:31 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202005.0372.v1

Modeling and Analysis of The Early-Growth Dynamics of COVID-19 Transmission

Abul Kalam al Azad, Asif Mostafa Hussain

Subject: Medicine And Pharmacology, Pulmonary And Respiratory Medicine Keywords: COVID-19; SARS-CoV-2; Coronavirus; Pandemic; Epidemiological Analysis; Exponential Growth; Herd Immunity; Doubling Period

Online: 23 May 2020 (10:36:33 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201704.0056.v1

Piezoresistive Response of Integrated CNT Yarns under Compression and Tension: The Effect of Lateral Constraint

Jude C. Anike, Huy H. Le, Grace E. Brodeur, Mathew M. Kadavan, Jandro L. Abot

Subject: Chemistry And Materials Science, Nanotechnology Keywords: carbon nanotube yarn; strain sensing; polymer; piezoresistivity; experimental

Online: 10 April 2017 (08:12:01 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201608.0075.v3

Lobatto-Milstein Numerical Method in Application of Uncertainty Investment of Solar Power Projects

Mahmoud A. Eissa, Boping Tian

Subject: Computer Science And Mathematics, Applied Mathematics Keywords: stochastic differential equation; numerical simulation; real option; renewable energy; Egypt

Online: 30 January 2017 (12:04:34 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202109.0408.v1

Assessing the Vertical Displacement of the Grand Ethiopian Renaissance Dam during its Filling using DInSAR technology and its Potential Acute Consequences on the Downstream Countries

Hesham El-Askary, Amr Fawzy, Rejoice Thomas, Wenzhao Li, Nicholas LaHaye, Erik Linstead, Thomas Piechota, Daniele Struppa, Mohamed Abdelaty Sayed

Subject: Environmental And Earth Sciences, Geography Keywords: Grand Ethiopian Renaissance Dam; Main and Saddle Dams; Ground Displacement; Sentinel-1; Dam Filling; Geological Structures

Online: 23 September 2021 (12:32:03 CEST)

Show abstract| Download PDF| Supplementary Files| Share

The Grand Ethiopian Renaissance Dam (GERD), formerly known as the Millennium Dam, is currently under construction and has been filling at a fast rate without sufficient known analysis on possible impacts on the body of the structure. The filling of GERD not only has an impact on the Blue Nile Basin hydrology, water storages and flow but also pose massive risks in case of collapse. Rosaries Dam located in Sudan at only 116 km downstream of GERD, along with the 20 million Sudanese benefiting from that dam, would be seriously threatened in case of the collapse of GERD. In this study, through the analysis of Sentinal-1 satellite imagery we show concerning deformation patterns associated with different sections of the GERD’s Main Dam (structure RCC Dam type) and the Saddle Dam (Embankment Dam type). We processed 109 descending mode scenes from Sentinel-1 SAR imagery, from December 2016 to July 2021, using the Differential Synthetic Aperture Radar Interferometry technique to demonstrate the deformation trends of both - the GERD’s Main and Saddle Dams. The time-series generated from the analysis clearly indicates different displacement trends at various sections of the GERD as well as the Saddle Dam. Results of the multi temporal data analysis on and around the project area show inconsistent subsidence at the extremities of the GERD Main Dam, especially the west side of the dam where we recorded varying displacements in the range of 10 mm to 90 mm at the crest of the dam. We conducted the current analysis after masking the images with a coherence value of 0.9 and hence, the subsequent results are extremely reliable and accurate. Further decomposition of the subsiding rate has revealed higher vertical displacement over the west side of the GERD’s Main Dam as compared to the east side. The local geological structures consisting of weak zones under the GERD’s accompanying Saddle Dam adds further instability to its structure. We identified seven critical nodes on the Saddle Dam that match the tectonic faults lying underneath it, and which display a varying degree of vertical displacements. In fact, the nodes located next to each other displayed varying displacement trends: one or more nodes displayed subsidence since 2017 while the other node in the same section displayed uplift. The geological weak zones underneath and the weight of the Saddle Dam itself may somewhat explain this inconsistency and the non-uniform vertical displacements. For the most affected cells, we observed a total displacement value of ~90 mm during the whole study period (~20 mm/year) for the Main Dam while the value of the total displacement for the Saddle dam is ~380 mm during the same period (~85 mm/year). Analysis through CoastSat tool also suggested a non-uniformity in trends of surface water-edge at the two extremities of the Main Dam.

Preprint ARTICLE | doi:10.20944/preprints201703.0238.v2

Applying Quantum Optimization Algorithms for Linear Programming

Mert Side, Volkan Erol

Subject: Computer Science And Mathematics, Computer Science Keywords: linear programming; optimization; quantum algorithms; complexity

Online: 14 April 2017 (04:16:51 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202004.0347.v1

Potential Chimeric Peptides to Block the SARS-CoV-2 Spike RBD

Debmalya Barh, Sandeep Tiwari, Bruno Silva Andrade, Marta Giovanetti, Ranjith Kumavath, Preetam Ghosh, Aristóteles Góes-Neto, Luiz Carlos Junior Alcantara, Vasco Azevedo

Subject: Biology And Life Sciences, Virology Keywords: antiviral peptides; COVID-19; SARS-CoV-2; nCoV-19; peptide design; ACE2; Spike protein

Online: 19 April 2020 (13:21:44 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201708.0049.v1

Comparison of Two Components of Propolis: Caffeic Acid (CA) and Caffeic Acid Phenethyl Ester (CAPE) to Induce Apoptosis and Cell Cycle Arrest of Breast Cancer Cells MDA-MB-231

Agata Kabała-Dzik, Anna Rzepecka-Stojko, Robert Kubina, Żaneta Jastrzębska-Stojko, Rafał Stojko, Robert Dariusz Wojtyczka, Jerzy Stojko

Subject: Biology And Life Sciences, Biochemistry And Molecular Biology Keywords: caffeic acid; caffeic acid phenethyl ester; CAPE; apotosis; cell cycle; proliferation; breast cancer; propolis

Online: 12 August 2017 (21:37:04 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201703.0161.v1

Sources of Economic Growth in Zambia, 1970-2013: A Growth Accounting Approach

Kelvin Mulungu, John Ng'ombe

Subject: Business, Economics And Management, Economics Keywords: Total factor productivity; growth accounting; economic growth; Zambia.

Online: 20 March 2017 (16:03:06 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201703.0085.v1

Nurse´s A-phase material enhance adhesion, growth and differentiation of human bone marrow-derived stromal mesenchymal stem cells

Ruben Rabadan-Ros, Salvador Aznar-Cervantes, Patricia Mazón, Patricia Ros-Tarraga, PIEDAD N. DE AZA, LUIS MESEGUER-OLMO

Subject: Chemistry And Materials Science, Biomaterials Keywords: TCP-C2S, Nurse ´A ceramic, Biomaterials, adult human mesenchymal stem cells, Solid State Reaction, Biomedical applications.

Online: 14 March 2017 (13:43:13 CET)

Show abstract| Download PDF| Supplementary Files| Share

Working Paper ARTICLE

Understanding Unreported Cases in the 2019-nCov Epidemic Outbreak in Wuhan, China, and the Importance of Major Public Health Interventions

Zhihua Liu, Pierre Magal, Ousmane Seydi, Glenn Webb

Subject: Computer Science And Mathematics, Applied Mathematics Keywords: corona virus; reported and unreported cases; isolation, quarantine; public closings; epidemic mathematical model

Online: 6 February 2020 (08:45:07 CET)

Show abstract| Download PDF| Share

Preprint REVIEW | doi:10.20944/preprints201707.0003.v1

Chronic Wasting Disease: Evolution of Diagnostic Testing for a Naturally Occurring Prion Disease

Nicholas J. Haley, Juergen A. Richt

Subject: Medicine And Pharmacology, Veterinary Medicine Keywords: prion, cervids, PMCA, RT-QuIC, diagnosis

Online: 3 July 2017 (17:34:35 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201902.0081.v1

Mutated Channelrhodopsins with Increased Sodium and Calcium Permeability

Xiaodong Duan, Georg Nagel, Shiqiang Gao

Subject: Biology And Life Sciences, Biochemistry And Molecular Biology Keywords: optogenetics; channelrhodopsins; sodium; Calcium; DC gate

Online: 8 February 2019 (09:41:15 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201705.0147.v1

‘When she calls for help’ – Domestic violence in Christian families

Leonie Westenberg

Subject: Arts And Humanities, Religious Studies Keywords: domestic violence; religion; families; women; abuse; theology; language

Online: 19 May 2017 (09:56:02 CEST)

Show abstract| Download PDF| Share

Carol Winkelmann, in her book ‘The Language of Battered Women’ describes not only the fact that domestic abuse is almost a daily occurrence in the lives of many women but that the language of religion and faith is often used by women in attempts to explain, understand and cope with such abuse . While religious belief and domestic violence may seem contradictory in terms of religious values of faith, virtue and love, research demonstrates that domestic violence in religious families and amidst religious congregations is prevalent. In fact, religious beliefs and practices are often embedded in cultural contexts and thus perpetuate patriarchal notions of dominance, power and submission. Abused Christian women, for example, are more likely to seek help from (male) ministers and others in positions of authority in their local church communities and are equally more likely to remain in or return to unsafe relationships, citing their religious beliefs to support their avoidance of ‘family break-ups’ because of abuse. What, then, is the response of ministers and church authorities to domestic abuse in their congregations? Despite recent calls for the training of pastors and other religious leaders in an understanding of domestic violence and in the recognition of appropriate, helpful responses, the language of some Christian churches can be seen to foster notions of submission so that women and pastors alike can appear confused concerning the experience of abuse. Religious congregations, while acting in love to help the poor and needy, for example, often fail to recognise domestic abuse amongst their own members and, indeed, such a topic can remain taboo in some church communities. Women, in turning to their pastors or other Christian leaders for help, can be silenced by the language of the religion itself, so that the role of wives and mothers may be seen to be submissive and the ‘keeper of the home’; to leave an abusive relationship may thus ‘break-up’ a home and imply failure of the woman to understand her role and fulfil her ‘maternal vocation’. On the other hand, religious beliefs offer victims of domestic violence both hope and comfort. Religious practices, such as prayer, liturgies and corporal (physical) works of mercy, can provide solace and practical assistance for women who suffer abuse. Domestic violence in religious congregations can be addressed within the context of the faith itself, with an emphasis on love and respect, helping women to understand their dignity with avenues of help so that the women can remove themselves and their children from abusive relationships, and the religious congregation and its leaders can call the partners to accountability. This paper seeks to outline a picture of domestic violence in religious congregations, specifically Christian church communities, by drawing on current research in the Western world. It then describes the language of some religious congregations that perpetuates domestic violence, with emphasis on contemporary studies in religious belief and domestic abuse. Finally, the paper makes some suggestions on how religious belief and practice can, in contrast to perpetuating abuse through norms, serve to assist women as victims of domestic violence, and how the connections between domestic violence and religious language or belief can be severed.

Preprint ARTICLE | doi:10.20944/preprints201608.0044.v1

Multiple Layers of Silicon-Silica (Si-SiO₂) Pair onto Silicon Substrate towards Highly Efficient, Wideband Silicon Photonic Grating Coupler

Md Asaduzzaman, Masuduzzaman Bakaul, Stan Skafidas, Md Rezwanul Haque Khandokar

Subject: Engineering, Electrical And Electronic Engineering Keywords: grating coupler; silicon photonics; optical interconnects; fiber interface; nanophotonics

Online: 4 August 2016 (12:00:43 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201707.0065.v1

An Electromagnetically Actuated Double-Sided Cell-Stretching Device for Mechanobiology Research

Harshad Kamble, Raja Vadivelu, Mathew Barton, Kseniia Boriachek, Ahmed Munaz, Sungsu Park, Muhammad J. A. Shiddiky, Nam-Trung Nguyen

Subject: Engineering, Bioengineering Keywords: Biomedical Engineering, Cell Stretching, Mechanobiology.

Online: 24 July 2017 (10:04:57 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201702.0089.v2

Analysis of Barriers to Wide Spread Adoption of Electric Vehicles in Shenzhen China

Faping Wang, Jiali Yu, Peng Yang, Lixin Miao, Bin Ye

Subject: Engineering, Transportation Science And Technology Keywords: EVs; PHEVs; penetration; adoption; barriers; preference; willingness; attitude

Online: 26 February 2017 (10:33:14 CET)

Show abstract| Download PDF| Supplementary Files| Share

Preprint ARTICLE | doi:10.20944/preprints201703.0015.v1

Evolutionary Optimization of Colebrook’s Turbulent Flow Friction Approximations

Dejan Brkić, Žarko Ćojbašić

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: colebrook equation; colebrook-white; moody diagram; turbulent flow; hydraulic resistance; darcy friction; pipes; genetic algorithms; optimization techniques; error analysis

Online: 2 March 2017 (07:57:54 CET)

Show abstract| Download PDF| Supplementary Files| Share

Preprint SHORT NOTE | doi:10.20944/preprints202007.0155.v1

Covid-19 Fatality Rate Between 0.1 and 0.3%, Gangelt and Santa Clara Combined

Dieter Mergel

Subject: Computer Science And Mathematics, Probability And Statistics Keywords: Confidence interval; Infection fatality rate; Covid-19

Online: 8 July 2020 (12:04:50 CEST)

Show abstract| Download PDF| Share

Preprint COMMUNICATION | doi:10.20944/preprints202004.0062.v1

Screening of FDA Approved Drugs Against COVID-19 Main Protease: Coronavirus Disease

Vijayakumar Balakrishnan, Karthik Lakshminarayanan

Subject: Medicine And Pharmacology, Epidemiology And Infectious Diseases Keywords: COVID-19; FDA approved drugs; High Throughput Virtual Screening; Sincalide; Pentagastrin.

Online: 6 April 2020 (14:09:04 CEST)

Show abstract| Download PDF| Supplementary Files| Share

Preprint REVIEW | doi:10.20944/preprints202004.0469.v1

Pandemic Coronavirus Disease (COVID-19): Challenges and A Global Perspective

Yashpal Singh Malik, Naveen Kumar, Shubhankar Sircar, Rahul Kaushik, Sudipta Bhatt, Kuldeep Dhama, Parakriti Gupta, Kapil Goyal, Mini P. Singh, Ujjala Ghoshal, Mohamed Ezzat Mahmoud El Zowalaty, O.R. Vinodh Kumar, Mohd. Iqbal Yatoo, Ruchi Tiwari, Mamta Pathak, Shailesh Kumar Patel, Ranjit Sah, Alfonso J. Rodriguez-Morales, Balasubramanian Ganesh, Prashant Kumar, Raj Kumar Singh

Subject: Biology And Life Sciences, Virology Keywords: severe acute respiratory syndrome coronavirus-2; COVID-2019; epidemiology; pathobiology; clinical profile; phyloanalysis; artificial intelligence; diagnosis; vaccines; therapeutics

Online: 26 April 2020 (08:15:23 CEST)

Show abstract| Download PDF| Supplementary Files| Share

Preprint ARTICLE | doi:10.20944/preprints202003.0257.v1

Generation System for Renewable Energy Density Substantially Higher than that of Power Stations and Presentation of Novel Superconductivity

Shinichi Ishiguri

Subject: Physical Sciences, Condensed Matter Physics Keywords: divergent current density; new superconductivity; Meissner effect; new type of condensation; energy generation; electrostatic potential; independent current source; voltage-controlled current source; renewable energy

Online: 16 March 2020 (04:18:23 CET)

Show abstract| Download PDF| Share

Societies around the world face serious energy problems related to the consumption of fossil fuels and the emission of dangerous radiation. To solve these problems, a new superconductor exhibiting a critical temperature higher than room temperature has been pursued but not achieved. This paper proposes a new energy generation system based on a circuit approach. Secondary to this process, a new type of superconductivity without refrigeration is demonstrated. In our previous paper [1], this system was proposed, but it did not describe the underlying theory in detail and did not mention an actual method to generate energy from the system. The present paper describes the theory of the existence of divergent current density and new superconductivity with no refrigeration. Moreover, the present paper proposes a method for extracting energy from the system by employing a voltage-controlled current source (i.e., a voltage–current converting method).The principle of the system is based on a circuit of two loops and independent current sources. First, the two electric loops are prepared, each with 4 diodes, where the diodes are oriented in the same direction within each loop, but their direction is opposite from loop to loop; four independent current sources connect the loops. In this circuit system, current is added iteratively as it flows along the loop according to Kirchhoff’s circuit law. As a result, a large current and electric potential are present along the loop. To confirm that this system works properly, it is necessary to demonstrate the presence of divergent currents in the transient state, and to do this, the present paper employs the Dirac equation and Lorentz conservation. Electric circuit software is employed to demonstrate that the presented method generates energy actually from our system.Our results confirm the presence of divergent current at a connected point of an independent current source in the transient state. Moreover, in the steady state, the theory demonstrates the Meissner effect (i.e., a London equation) and a new type of macroscopic wave function and condensation. For an initial small input current of 0.1 μA, the simulation reveals a large generating current of 7 kA and electric power of 10¹¹ W, which is much larger than unit of power from an average thermal power station; moreover, the system presents with superconducting electrical transport conditions.The present study is significant because it demonstrates theoretically the existence of divergent current density and a new type of superconductivity requiring no refrigeration. Secondly, the simulations show the generation of a large energy density that can be obtained in a small laboratory room with minimal cost.

Preprint ARTICLE | doi:10.20944/preprints202010.0589.v1

Natural Hydrogen System in Western Australia?

Reza Rezaee

Subject: Environmental And Earth Sciences, Atmospheric Science And Meteorology Keywords: Natural Hydrogen System; circular depressions; Archean iron-rich Craton; Western Australia

Online: 28 October 2020 (11:57:31 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202103.0409.v1

The Ecological Niche of SARS-CoV-2-like Viruses in Bats, as Inferred from Phylogeographic Analyses of Rhinolophus Species

Alexandre Hassanin, Vuong Tan Tu, Manon Curaudeau, and Gabor Csorba

Subject: Biology And Life Sciences, Animal Science, Veterinary Science And Zoology Keywords: coronavirus; horseshoe bats; reservoir hosts; Indochina; China; herd immunity.

Online: 16 March 2021 (09:39:15 CET)

Show abstract| Download PDF| Supplementary Files| Share

Preprint REVIEW | doi:10.20944/preprints201901.0312.v1

Functional Morphology of the Cardiac Jelly in the Tubular Heart of Vertebrate Embryos

Jörg Männer, Talat Mesud Yelbuz

Subject: Biology And Life Sciences, Cell And Developmental Biology Keywords: embryonic heart tube; extracellular matrix; cardiac jelly; hydraulic skeleton; heart skeleton; valveless pumping; blood flow; non-circular cross sections; ballooning; trabeculation

Online: 30 January 2019 (11:16:14 CET)

Show abstract| Download PDF| Share