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Preprint ARTICLE | doi:10.20944/preprints202009.0647.v1

Assessing Automated Machine Learning Service to Detect COVID-19 from X-Ray and CT Images: A Real-Time Smartphone Application Case Study

Mohammad Razib Mustafiz, Khaled Mohsin

Subject: Computer Science And Mathematics, Algebra And Number Theory Keywords: Lung condition; COVID-19; Machine learning; Custom Vision; Core ML; Auto ML; AI; Pneumonia; Smartphone application; Real-time diagnosis

Online: 26 September 2020 (16:14:39 CEST)

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AI is leveraging all aspects of life. Medical services are not untouched. Especially in the field of medical image processing and diagnosis. Big IT and Biotechnology companies are investing millions of dollars in medical and AI research. The recent outbreak of SARS COV-2 gave us a unique opportunity to study for a non interventional and sustainable AI solution. Lung disease remains a major healthcare challenge with high morbidity and mortality worldwide. The predominant lung disease was lung cancer. Until recently, the world has witnessed the global pandemic of COVID19, the Novel coronavirus outbreak. We have experienced how viral infection of lung and heart claimed thousands of lives worldwide. With the unprecedented advancement of Artificial Intelligence in recent years, Machine learning can be used to easily detect and classify medical imagery. It is much faster and most of the time more accurate than human radiologists. Once implemented, it is more cost-effective and time-saving. In our study, we evaluated the efficacy of Microsoft Cognitive Service to detect and classify COVID19 induced pneumonia from other Viral/Bacterial pneumonia based on X-Ray and CT images. We wanted to assess the implication and accuracy of the Automated ML-based Rapid Application Development (RAD) environment in the field of Medical Image diagnosis. This study will better equip us to respond with an ML-based diagnostic Decision Support System(DSS) for a Pandemic situation like COVID19. After optimization, the trained network achieved 96.8% Average Precision which was implemented as a Web Application for consumption. However, the same trained network did not perform like Web Application when ported to Smartphone for Real-time inference, which was our main interest of study. The authors believe, there is scope for further study on this issue. One of the main goals of this study was to develop and evaluate the performance of AI-powered Smartphone-based Real-time Applications. Facilitating primary diagnostic services in less equipped and understaffed rural healthcare centers of the world with unreliable internet service.

Working Paper ARTICLE

High Fidelity Simulation of Ultrafine PM Filtration by Multiscale Fibrous Media Characterized by a Combination of X-Ray CT and FIB-SEM

Zhengyuan Pan, Xiaole Zhang, Zhaoxia Sun, Fuze Jiang, Luchan Lin, Yun Liang, Min Tang, Jing Wang

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: nanofiber; multiscale; X-ray tomography; composite filter media; numerical simulation

Online: 20 July 2020 (11:28:45 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201709.0059.v1

The Effect of Heat Transfer and Polymer Concentration on Non-Newtonian Fluid from Pore-Scale Simulation of Rock X-Ray micro-CT

Moussa Tembely, Ali M. AlSumaiti, Mohamed S. Jouini, Khurshed Rahimov

Subject: Engineering, Mechanical Engineering Keywords: pore-scale model; non-Newtonian fluid; Finite Volume Method; Digital Rock Physics

Online: 15 September 2017 (10:09:40 CEST)

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Preprint COMMUNICATION | doi:10.20944/preprints202312.2146.v1

Acute Toxicity of Malathion, Permethrin, and Glyphosate on the Tropical Freshwater Shrimp Xiphocaris elongata

Wesley X Torres-Pérez, Omar Pérez-Reyes

Subject: Environmental And Earth Sciences, Pollution Keywords: Aquatic toxicology, organophosphate, pesticide, Puerto Rico, pyrethroids

Online: 28 December 2023 (05:06:55 CET)

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Preprint ARTICLE | doi:10.20944/preprints201703.0054.v1

Enhancing the Responsivity of Uncooled Infrared Detectors Using Plasmonics for High-Performance Infrared Spectroscopy

Amr Shebl Ahmed, Hye Jin Kim, Jinsik Kim, Kyo Seon Hwang, Seonghwan Kim

Subject: Physical Sciences, Applied Physics Keywords: plasmonics; infrared detector; MEMS; gas sensing

Online: 10 March 2017 (10:21:40 CET)

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Preprint ARTICLE | doi:10.20944/preprints202403.1646.v1

Moisture Content Assessment of Commercially Available Diesel Fuel Using Impedance Spectroscopy

Lukasz Macioszek, Dariusz Sobczyński

Subject: Engineering, Energy And Fuel Technology Keywords: fuel; quality control; electrical measurement; diesel; impedance spectroscopy; fuel contamination

Online: 27 March 2024 (03:43:07 CET)

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Preprint ARTICLE | doi:10.20944/preprints201904.0154.v1

Structural Change Analysis of Cerianite in Weathered Residual Rare Earth Ore by Mechanochemical Reduction Using X-ray Absorption Fine Structure

Tatsuya Kato, Yuki Tsunazawa, Wenying Liu, Chiharu Tokoro

Subject: Engineering, Chemical Engineering Keywords: oxygen vacancy; extended x-ray absorption fine structure; high-intensity grinding; local structure; quantum effect

Online: 13 April 2019 (05:18:11 CEST)

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Preprint CASE REPORT | doi:10.20944/preprints202307.0290.v1

Bowel Perforation in Vascular EDS: A Case Report and a Comprehensive Review of the Literature

Alexandra Menni, Georgios Tzikos, Alexandros Sarafis, Athina Ververi, George Chatziantoniou, Vasileios Rafailidis, Stavros Panidis, Patroklos Goulas, Eleni Karlafti, Stylianos Apostolidis, Olga Giouleme, Antonios Michalopoulos, Daniel Paramythiotis

Subject: Medicine And Pharmacology, Surgery Keywords: vascular EDS; bowel perforation; case report; collagen; gene mutations

Online: 5 July 2023 (11:48:13 CEST)

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Preprint REVIEW | doi:10.20944/preprints202304.0019.v1

Comparative Analysis on Available Technique for the Detection of Covid-19 through CT-Scan and X-Ray using Machine Learning: A Systematic Review

Vinayak Majhi, Sudip Paul

Subject: Medicine And Pharmacology, Pulmonary And Respiratory Medicine Keywords: Covid-19; Deep Learning; Computerized Tomography; Artificial Intelligence; Machine Learning; X-ray

Online: 3 April 2023 (08:40:11 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202107.0548.v1

Transfer Learning for the Detection and Diagnosis of Types of Pneumonia Including Pneumonia Induced by the COVID-19 from Chest X-Ray Images

Yusuf Brima, Marcellin Atemkeng, Stive Tankio Djiokap, Jaures Ebiele, Franklin Tchakounté

Subject: Engineering, Automotive Engineering Keywords: ANN; COVID-19; CT; mRNA; MRI; RT-PCR; SARS-CoV-2; XCR

Online: 23 July 2021 (15:02:40 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202201.0107.v1

Short and Very Short Term Firm-level Load Forecasting for Warehouses: A Comparison of Machine Learning and Deep Learning Models

Andrea Maria N. C. Ribeiro, Pedro Rafael X. do Carmo, Patricia Takako Endo, Pierangelo Rosati, Theo Lynn

Subject: Engineering, Energy And Fuel Technology Keywords: Very short term load forecasting; VSTLF; Short term load forecasting; STLF; deep learning; RNN; LSTM; GRU; machine learning; SVR; random forest; extreme gradient boosting, energy consumption; ARIMA; time series prediction.

Online: 10 January 2022 (12:17:35 CET)

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Preprint ARTICLE | doi:10.20944/preprints202006.0352.v1

Proteins Nsp12 and 13 of SARS-CoV-2 Have Mitochondrial Recognition Signal: A Connection with Cellular Mitochondrial Dysfunction and Disease Manifestation

Upasana Ray, Feroza Begum

Subject: Biology And Life Sciences, Virology Keywords: SARS-CoV-2; ARDS; non-structural proteins; mitochondria

Online: 29 June 2020 (10:40:07 CEST)

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Preprint REVIEW | doi:10.20944/preprints202403.1154.v1

Comorbidies of Blood Pressure and Blood Glucose: Challenges and Future Trends

Ashisha G R, Anitha Mary X, Karthik C, Mehdi Gheisari

Subject: Medicine And Pharmacology, Dietetics And Nutrition Keywords: blood pressure (BP); blood glucose

Online: 19 March 2024 (12:55:33 CET)

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Preprint ARTICLE | doi:10.20944/preprints202101.0380.v1

A Model for Characteristic X-Ray Emission in Electron Probe Microanalysis based on the Spherical Harmonic (PN) Method for Electron Transport

Jonas Buenger, Silvia Richter, Manuel Torrilhon

Subject: Chemistry And Materials Science, Biomaterials Keywords: EPMA; deterministic electron transport; k-ratio; moment method; spherical harmonic (PN) approximation; characteristic X-Ray emission

Online: 19 January 2021 (13:20:53 CET)

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Preprint ARTICLE | doi:10.20944/preprints202308.0680.v1

The Impact of XRF Escape Process on the Energy Resolution of a NaI Scintillation Detector for Medical Imaging or Gamma-Ray Spectroscopy

Raffaele Scafè, Marco Puccini, Rosanna Pellegrini, Roberto Pani

Subject: Physical Sciences, Nuclear And High Energy Physics Keywords: gamma-ray scintillation detector; XRF escape; SPECT; PET; charge spread spectroscopy; inter-crystal scatter; inter-crystal XRF escape

Online: 8 August 2023 (13:04:25 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202309.0204.v1

Synthesis of a New Dinuclear Cu(I) Complex with Triazine Ligand and diphenylphosphine methane: X-ray Structure, Optical properties, DFT calculations and application in DSSC

Carlos A. Peñuelas, José J. Campos-Gaxiola, Rody Soto-Rojo, Adriana Cruz-Enríquez, Edgar A. Reynoso-Soto, Valentín Miranda-Soto, Juventino J. García, Marcos Flores Alamo, Jesús Baldenebro-López, Daniel Glossman Mitnik

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: copper (I); triazine, phosphine, crystal structure, theoretical calculations, co-sensitized.

Online: 4 September 2023 (14:59:22 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202102.0200.v1

Maghemite in Brazilian Iron Ores: Quantification of the Magnetite-Maghemite Isomorphic Series by X-ray Diffraction and the Rietveld Method, and Confirmation by Independent Methods

Renata Hiraga, Otávio da Fonseca Martins Gomes, Reiner Neumann

Subject: Environmental And Earth Sciences, Atmospheric Science And Meteorology Keywords: Iron ore; Maghemite; Nonstoichiometric magnetite; X-Ray diffraction; Ore characterization

Online: 8 February 2021 (12:13:32 CET)

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Preprint ARTICLE | doi:10.20944/preprints202101.0170.v1

Evaulation of a Model for Urban Vegetation Barriers’ Effects on Air Pollution

Ray F. Nassar

Subject: Environmental And Earth Sciences, Atmospheric Science And Meteorology Keywords: Air pollution; environmental hazards; Volatile Organic Compounds

Online: 8 January 2021 (16:59:01 CET)

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Preprint ARTICLE | doi:10.20944/preprints202203.0288.v1

Towards Clinical Practice: Design and Implementation of Convolutional Neural Network-Based Assistive Diagnosis System for COVID-19 Case Detection from Chest X-Ray Images

Daniel Kvak, Marian Bendik, Anna Chromcova

Subject: Computer Science And Mathematics, Artificial Intelligence And Machine Learning Keywords: computer-aided detection; convolutional neural network; COVID-19; deep learning; image classification

Online: 22 March 2022 (02:19:50 CET)

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Preprint ARTICLE | doi:10.20944/preprints202111.0574.v1

Use of X-Ray Mutagenesis to Increase Genetic Diversity of Zantedeschia aethiopica for Early Flowering, Improved Tolerance to Bacterial Soft Rot and Higher Yield

Noam Reznik, Bijaya Sharma Subedi, Shoshana Weisman, Gavriel Friesem, Nir Carmi, Iris Yedidia, Michal Sharon-Cohen

Subject: Biology And Life Sciences, Agricultural Science And Agronomy Keywords: Zantedeschia aethiopica; X-ray mutagenesis; cultivation; Pectobacterium; mutation breeding

Online: 30 November 2021 (14:42:05 CET)

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Preprint ARTICLE | doi:10.20944/preprints201812.0234.v1

The Evolution of Internal Damage Identified by Means of X-Ray Computed Tomography in Two Steels and the Ensuing Relation with Gurson’s Numerical Modelling

Fernando Suárez, Federico Sket, Jaime Gálvez, David A. Cendón, José M. Atienza, Jon Molina

Subject: Engineering, Civil Engineering Keywords: Steel; Tensile Test; XRCT; Damage Evolution; Gurson Model

Online: 19 December 2018 (12:14:27 CET)

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Preprint ARTICLE | doi:10.20944/preprints202101.0140.v1

Inverse Analysis Method on the Performance Evaluation of Geosynthetic Reinforcements in Highway Pavement on Expansive Soils

Debojit Sarker, Jay X. Wang

Subject: Engineering, Automotive Engineering Keywords: Expansive soils; Pavement; Geosynthetics; Inverse analysis; Virtual load

Online: 8 January 2021 (10:43:43 CET)

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Preprint ARTICLE | doi:10.20944/preprints202304.0022.v1

Deep Learning Neural Network Performance on NDT Digital X-ray Radiography Images: Analyzing the Impact of Image Quality Parameters - An Experimental Study

Bata Hena, Ziang Wei, Clemente Ibarra Castanedo, Xavier Maldague

Subject: Engineering, Aerospace Engineering Keywords: non-destructive testing; deep learning; automated defect recognition (ADR); semantic segmentation; digital X-ray radiography

Online: 3 April 2023 (10:25:31 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201703.0089.v1

Scale-Dependent Light Scattering Analysis of Textured Structures on LED Light Extraction Enhancement Using Hybrid Full-Wave Finite-Difference Time-Domain and Ray-Tracing Methods

Tsung-Xian Lee, Ching-Chia Chou

Subject: Physical Sciences, Optics And Photonics Keywords: Light-emitting diodes; Light extraction efficiency; Textured structures; Light scattering; BSDF, BRDF, and BTDF

Online: 15 March 2017 (00:12:16 CET)

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Preprint REVIEW | doi:10.20944/preprints201706.0078.v1

On-chip High-finesse Fabry-Perot Microcavities for Optical Sensing and Quantum Information

Mohammad H. Bitarafan, Ray G. DeCorby

Subject: Physical Sciences, Optics And Photonics Keywords: Fabry-Perot microcavities; sensing; cavity QED; microcavity lasers

Online: 16 June 2017 (10:38:57 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202401.1147.v2

Characterization of Bixin by UV-Visible Spectroscopy and HPLC, and Its Application as Latent Fingermark Developer

Danielle Tapia Bueno, Amanda Fonseca Leitzke, Rosane Lopes Crizel, Cristina Jansen-Alves, Emanuel Gomes Bertizzolo, Juliana Porciuncula Da Silva, Gabrielly Quartieri Sejanes, Kristiane de Cássia Mariotti, Claudio Martin Pereira De Pereira

Subject: Chemistry And Materials Science, Organic Chemistry Keywords: bixin; liquid chromatography; composites; zinc carbonate; kaolinite; fingermark; fingerprint revealers; papilloscopy.

Online: 4 March 2024 (09:58:59 CET)

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Preprint REVIEW | doi:10.20944/preprints201810.0126.v1

Brine-Dependent Recovery Processes (Smart-Water/Low-Salinity-Water) in Carbonate and Sandstone Petroleum Reservoirs: Review of Laboratory-Field Studies, Interfacial Mechanisms and Modeling Attempts

Adedapo N. Awolayo, Hemanta K. Sarma, Long X. Nghiem

Subject: Engineering, Energy And Fuel Technology Keywords: state-of-the-art review; brine-dependent recovery; potential determining ions; chemical mechanisms; sandstone and carbonate rocks; wettability alteration; waterflooding; modeling

Online: 8 October 2018 (05:18:14 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202308.1845.v1

Probing Localised Corrosion Inhibition of Aa2024-T3 by Integrating Electrode Array, SVET, SECM and SEM-EDS Techniques

Reza Parvizi, Anthony E Hughes, Maria Forsyth, Mike Yongjun Tan

Subject: Engineering, Metallurgy And Metallurgical Engineering Keywords: Localised corrosion and inhibition; wire beam electrode (WBE); scanning vibrating electrode technique (SVET); scanning electrochemical microscopy (SECM)

Online: 28 August 2023 (09:54:49 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202310.0518.v1

A Portable Three-Layer Compton Camera for Wide-Energy Range Gamma-Ray Imaging: Design, Simulation and Preliminary Testing

Jipeng Zhang, Xiong Xiao, Ye Chen, Bin Zhang, Xinhua Ma, Xianyun Ai, Jinglun Li

Subject: Physical Sciences, Radiation And Radiography Keywords: Compton camera; wide-energy range; Monte Carlo simulation; scintillation detector; image reconstruction

Online: 9 October 2023 (11:08:24 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202312.1089.v1

Hybrid approach for multiscale and multimodal time-resolved diagnosis of ultrafast processes in materials via tailored synchronization of laser and X-ray sources at MHz repetition rates

Nikita Marchenkov, Evgenii Mareev, Anton Kulikov, Fedor Pilyak, Eduard Ibragimov, Yury V. Pisarevsky, Fedor Potemkin

Subject: Physical Sciences, Optics And Photonics Keywords: FPGA; synchrotron radiation source; ultrashort lasers; synchronization

Online: 14 December 2023 (10:56:16 CET)

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Preprint ARTICLE | doi:10.20944/preprints202305.2066.v1

All-Optical, Air-Coupled Ultrasonic Detection of Low-pressure Gas Leaks and Observation of Jet Tones in the MHz Range

Kyle G. Scheuer, Ray G. DeCorby

Subject: Physical Sciences, Acoustics Keywords: jet tone; leak detection; air-coupled ultrasound; optical ultrasound detection; optomechanics; buckled dome microcavity

Online: 30 May 2023 (07:30:52 CEST)

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Preprint REVIEW | doi:10.20944/preprints202307.0065.v1

MTHFR and LC, CFS, POTS, MCAS, SIBO, EDS: Methylating the Alphabet Torrance Memorial Medical Center, Dept of Pathology

Patrick Chambers

Subject: Biology And Life Sciences, Biochemistry And Molecular Biology Keywords: methylation; methionine; folate; riboflavin; magnesium; tryptophan

Online: 4 July 2023 (03:05:44 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201901.0191.v1

Analytical Solutions for the Propagation of UltraShort and UltraSharp Pulses in Dispersive Media

Er'el Granot

Subject: Physical Sciences, Optics And Photonics Keywords: ultrashort pulses; dispersion; pulse distortion; optical communications

Online: 20 January 2019 (09:17:07 CET)

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Preprint ARTICLE | doi:10.20944/preprints202308.0812.v3

Hydration and Fat Estimates

Gian Luca Farina, Carmine Orlandi, Niccolò Gori, Lexa Nescolarde, Henry Lukaski

Subject: Medicine And Pharmacology, Dietetics And Nutrition Keywords: smartphone; fat; extracellular water; body mass index; digital imaging; bioelectrical impedance

Online: 5 October 2023 (13:01:56 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0864.v1

Design of a Dispersive 1064 nm Fiber Probe Raman Imaging Spectrometer and Its Application to Human Bladder Resectates

Juan David Munoz-Bolanos, Tanveer Ahmed Shaik, Arkadiusz Miernik, Juergen Popp, Christoph Krafft

Subject: Biology And Life Sciences, Life Sciences Keywords: bladder tumor; Raman imaging; 1064 nm; cluster analysis; Python toolbox

Online: 15 April 2024 (09:07:12 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201701.0030.v2

Nearly Zero Energy Standard for Non-Residential Buildings with High Energy Demands—An Empirical Case Study Using the State Related Properties of Bavaria

Michael Keltsch, Werner Lang, Thomas Auer

Subject: Engineering, Civil Engineering Keywords: Energy Performance of Buildings Directive (EPBD 2010); nearly zero energy standard; non-residential buildings; highly technically installed buildings; energy balance

Online: 9 January 2017 (10:35:18 CET)

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Preprint ARTICLE | doi:10.20944/preprints202402.1438.v1

Convolutional Neural Networks Applied to Antimony Quantification via Reflectance Spectroscopy Using Soils from Northern Portugal: Opportunities and Challenges

Morgana Carvalho, Joana Cardoso-Fernandes, Alexandre Lima, Ana Caudia Teodoro

Subject: Environmental And Earth Sciences, Geophysics And Geology Keywords: Antimony; exploration; reflectance spectroscopy; soil analysis; critical raw materials; deep learning; geology

Online: 26 February 2024 (11:43:43 CET)

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Preprint ARTICLE | doi:10.20944/preprints202311.1045.v1

Robustness of Single and Dual-Energy Deep Learning-Based Scatter Correction Models on Simulated and Real Chest X-rays

Clara Freijo, Joaquin L. Herraiz, Fernando Arias-Valcayo, Paula Ibáñez, Gabriela Moreno, Amaia Villa-Abaunza, Jose M. Udias

Subject: Computer Science And Mathematics, Artificial Intelligence And Machine Learning Keywords: x-ray image; scatter correction; deep learning; dual energy; monte carlo simulations

Online: 16 November 2023 (07:43:59 CET)

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Preprint TECHNICAL NOTE | doi:10.3390/sci2020030

On Singular Perturbation of Neutron Point Kinetics in the Dynamic Model of a PWR Nuclear Power Plant

Xiangyi Chen, Asok Ray

Subject: Physical Sciences, Applied Physics Keywords: PWR nuclear power plants; point kinetics; singular perturbation

Online: 26 April 2020 (00:00:00 CEST)

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Preprint REVIEW | doi:10.20944/preprints202101.0067.v1

Ultrananocrystalline Diamond Nanowires: Fabrication, Characterization, and Sensor Applications

Andrew F. Zhou, Xinpeng Wang, Elluz Pacheco, Peter X. Feng

Subject: Chemistry And Materials Science, Biomaterials Keywords: ultrananocrystalline diamond (UNCD); boron doping; nitrogen doping; nanowire (NW); gas sensor; ultraviolet (UV) photodetector; piezoresistance (PZR) sensor; biosensor; nitrogen-vacancy (NV); magnetic quantum sensor

Online: 5 January 2021 (09:09:09 CET)

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Preprint ARTICLE | doi:10.20944/preprints201701.0059.v1

Optimization of Lactoperoxidase and Lactoferrin Separation on an Ion-Exchange Chromatography Step

Naeimeh Faraji, Yan Zhang, Ajay K. Ray

Subject: Biology And Life Sciences, Biochemistry And Molecular Biology Keywords: cation exchange chromatography; minor milk protein; response surface modeling; simulation; steric mass action (SMA); optimization

Online: 12 January 2017 (09:59:40 CET)

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Preprint ARTICLE | doi:10.20944/preprints202203.0080.v1

Residual Stresses in VT6 (Ti-6Al-4V) Alloy After Shot Peening Evaluated Using X-Ray Diffraction, Laser Speckle Interferometry and GA-Ion FIB-DIC Micro-Ring-Core Milling

Pavel A. Somov, Eugene S. Statnik, Yuliya Kan, Vladimir S. Pisarev, Sviatoslav I. Eleonsky, Dmitry Yu. Ozherelkov, Alexei I. Salimon

Subject: Engineering, Mechanical Engineering Keywords: residual stress; VT6 (Ti-6Al-4V); shot peening; X-ray diffraction; speckle interferometry; Ga-ion FIB-DIC

Online: 4 March 2022 (13:34:03 CET)

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Shot peening has become a well-established technique for the introduction of beneficial compressive Residual Stresses (RS) into the near-surface layers of metallic materials for the purpose of preventing or suppressing fatigue crack nucleation and growth. Ti-alloys are widely used to fabricate compressor blades of aeroengines. Titanium blades that may be susceptible to different modes of damage under cyclic loading (high cycle fatigue, fretting fatigue) are often subjected to shot peening to extend their safe operating time. The control and monitoring of residual stresses in titanium blades is of great importance to assure the safety of aeroengines. The techniques for residual stress evaluation include mechanical methods (material removal) as well as physical methods such as X-ray diffraction. Perhaps the most common and practically accessible form of the latter is the method. Conventional laboratory X-ray diffractometers typically probe samples to the depths up to ~20 µm that correspond to 1x...5x the average grain size for typical metals and alloys. The limitations of the method have been identified and reviewed in the literature, motivating the use of other semi-destructive approaches to evaluate the residual stresses in deeper layers and at more sharply defined locations. In the present report we present a case study of the comparison between non-destructive and semi-destructive evaluation techniques, namely the X-ray diffraction method against the mechanical and FIB-DIC ring-core drilling applied to the samples of VT6 (Russian designation of Ti-6Al-4V) titanium alloy after shot peening with 1 mm steel balls. Mechanical drilling of circular holes of ~2 mm diameter with laser speckle interferometry monitoring of strains gives a rough spatial resolution of a few millimeters, while the Korsunsky FIB-DIC method of Ga-ion beam micro-ring core milling within FIB-SEM with Digital Image Correlation (DIC) deformation analysis delivers spatial resolution down to a few micrometers. Good agreement has been found between the X-ray and FIB-DIC estimates of RS variation profiles as a function of depth in shot peened titanium alloy samples. Some advances in the FIB-DIC method are presented and discussed in terms of the acceleration of data acquisition and interpretation.

Preprint ARTICLE | doi:10.20944/preprints202311.1779.v1

Exact and Paraxial Broadband Airy Wave Packets in Free Space and a Temporally Dispersive Medium

Ioannis M. Besieris, Peeter Saari

Subject: Physical Sciences, Optics And Photonics Keywords: airy beams; nondiffracting pulses; localized waves; space-time wavepackets

Online: 28 November 2023 (07:31:50 CET)

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Preprint ARTICLE | doi:10.20944/preprints202402.1241.v1

Power to the People – on the Role of Districts in Decentralized Energy Systems

Jonas Schnidrig, Arthur Chuat, Cédric Terrier, François Maréchal, Manuele Margni

Subject: Engineering, Energy And Fuel Technology Keywords: energy system optimization; renewable energy; decentralization; self-consumption; renewable energy hub; carbon neutrality; energy independence

Online: 23 February 2024 (06:29:10 CET)

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Preprint ARTICLE | doi:10.20944/preprints202010.0374.v2

On Soft Lebesgue Measure

Sujay Goldar, Subhasis Ray

Subject: Computer Science And Mathematics, Algebra And Number Theory Keywords: Soft Set, Soft Element, Soft Real Number, Soft Interval, Soft Sequence, Soft Lebesgue Measure.

Online: 8 December 2022 (07:52:16 CET)

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Preprint ARTICLE | doi:10.20944/preprints202208.0115.v1

Internet of Things Aware Secure Dew Computing Architecture for Distributed Hotspot Network: A Conceptual Study

Partha Pratim Ray, Karolj Skala

Subject: Computer Science And Mathematics, Computer Networks And Communications Keywords: Dew computing; Internet of Things; Blockchain; Hotspot Network

Online: 5 August 2022 (03:46:27 CEST)

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Preprint TECHNICAL NOTE | doi:10.20944/preprints202102.0618.v1

The Concept of Training Image-Based Geostatistics for Spatial Distribution of Hydraulic Conductivity

Fiaz Hussain, Ray-Shyan Wu

Subject: Environmental And Earth Sciences, Atmospheric Science And Meteorology Keywords: Interpolation; Hydraulic Conductivity; Multi-Point Geostatistics; Training Image

Online: 26 February 2021 (12:47:53 CET)

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Preprint ARTICLE | doi:10.20944/preprints202311.1310.v5

Rethinking Energy Conservation and Generation for Sustainable Solutions-An Innovative Energy Circuitry Approach

Alex Mwololo Kimuya

Subject: Engineering, Electrical And Electronic Engineering Keywords: energy conservation; circuit; electrical short circuit; energy generation; energy efficiency; renewable energy; self-recharging circuits; thermodynamics; electric vehicles; carbon footprint reduction

Online: 27 March 2024 (09:50:39 CET)

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Preprint ARTICLE | doi:10.20944/preprints201903.0166.v1

High Consistency of Structure-Based Design and X-Ray Crystallography: Design, Synthesis, Kinetic Evaluation and Crystallographic Binding Mode Determination of Biphenyl-N-Acyl-β-D-Glucopyranosylamines as Glycogen Phosphorylase Inhibitors

Thomas Fischer, Symeon M. Koulas, Anastasia S. Tsagkarakou, Efthimios Kyriakis, George A. Stravodimos, Vassiliki T. Skamnaki, Panagiota G.V. Liggri, Spyros E. Zographos, Rainer Riedl, Demetres D. Leonidas

Subject: Chemistry And Materials Science, Medicinal Chemistry Keywords: Structure-based design; glycogen phosphorylase inhibitor; glycogen metabolism; type 2 diabetes; X-ray crystallography; N-acyl-β-D-glucopyranosylamine

Online: 15 March 2019 (14:06:06 CET)

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Preprint CONCEPT PAPER | doi:10.20944/preprints202111.0508.v1

Imagining Sustainable Human Ecosystems with Power-to-x in-situ Resource Utilisation Technology

Mark Baldry, Nicholas Gurieff, Declan Keogh

Subject: Engineering, Energy And Fuel Technology Keywords: Power-to-X; Space; energy storage; in-situ resource utilisation; ammonia; circular economy;

Online: 26 November 2021 (13:07:24 CET)

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Preprint REVIEW | doi:10.20944/preprints202403.1430.v1

Imaging Spectroscopy for the Mining Life Cycle: A Guide for Drone Applications

Friederike Koerting, Saeid Asadzadeh, Justus Constantin Hildebrand, Ekaterina Savinova, Evlampia Kouzeli, Konstantinos Nikolakopoulos, David Lindblom, Nicole Koellner, Simon J. Buckley, Miranda Lehman, Daniel Schläpfer, Steven Micklethwaite

Subject: Environmental And Earth Sciences, Remote Sensing Keywords: hyperspectral imaging; UAS; mining; visible near-infrared; shortwave infrared; mineral mapping; waste remediation; environmental monitoring; drone

Online: 25 March 2024 (08:47:40 CET)

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Preprint ARTICLE | doi:10.20944/preprints202103.0278.v1

Utilization of Mosque as A Part of Early Warning Systems to Reduce Flood Damage in Samarinda City, Indonesia

Riyan Benny Sukmara, Ray Shyan Wu

Subject: Engineering, Civil Engineering Keywords: flooding, early warning, damage, mosque

Online: 10 March 2021 (13:01:45 CET)

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Samarinda City is one of the most attractive cities in Borneo Island (Indonesia) and also as a capital city of EastBorneo Province. The expansion of urban areas becomes essential due to rapid population and housing demand. Base on the statistical report, the annual population growth rate is 0.018% from the year 2016-2017 with a total population of 843446 inhabitants. Many natural disasters occur in some areas in this city, especially flooding. This natural disaster occurs almost every year, many people suffered and forced to evacuate. In 2018 there is 3 flood event with 28311 people was suffered and evacuated, and 5170 houses were flooded [1]. During the flood event, it was very possible to gain damages to their property and make traffic stuck. One common way to reducing the damages is using Early Warning Systems (EWS). Early warning is a major element for disaster risk reduction, including damages. To prevent and mitigate the impact of a disaster, many countries had taken action to build various methods of a public warning system. An effective early warning system focused on people-centered and comprises the following element, such as risk knowledge, technical monitoring and service, communication and dissemination of warnings, and community response capability [2]. Related to the existing condition which Samarinda is a Muslim-dominated city and obviously has a lot of a number of mosques. This is a good potency to develop an early warning system because every mosque has a loudspeaker for echoing Adzan (Muslim prayer-calling). With this existing condition, the loudspeaker can be utilized as a flood outdoor-voice warning announcer. The aim of this study is to briefly introduce the strategy of dissemination early warning by utilizing mosques. The hope of early warning dissemination is giving enough time to the people to evacuate their property to reduce damages and possibly to giving information to avoiding traffic stuck (in a certain location)due to flooding. The results of this study can be used as input for decision-makers to develop effective flood management strategies and policies, especially in the case of an early warning system where not well-developed in Samarinda.

Preprint ARTICLE | doi:10.20944/preprints202010.0071.v1

New Insights Into the Structure of Hydroxylated and Alkylated Glycols: A Comparative X-ray Diffraction, Raman and Molecular Dynamics Study of Ethane-1,2-Diol, 2-Methoxyethan-1-ol and 1,2-Dimethoxy Ethane

Lorenzo Gontrani, Pietro Tagliatesta, Antonio Agresti, Sara Pescetelli, Marilena Carbone

Subject: Chemistry And Materials Science, Analytical Chemistry Keywords: ethane-diols; methoxy and dimethoxy ethane; liquid structure; hydrogen bond, XRD; Raman

Online: 5 October 2020 (11:30:46 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202308.0626.v1

Minimal Mechanisms Responsible for the Dispersive Behaviour of the Madden Julian Oscillation

Vincent Mathew, Kartheek Mamidi

Subject: Environmental And Earth Sciences, Atmospheric Science And Meteorology Keywords: Madden Julian Oscillation; shallow water model; moisture interactions

Online: 8 August 2023 (10:09:22 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.0921.v1

Improved Algorithms of Data Processing for Dispersive Interferometry using Optical Frequency Comb

Tao Liu, Jiucheng Wu, Amane Suzuki, Ryo Sato, Hiraku Matsukuma, Wei Gao

Subject: Engineering, Mechanical Engineering Keywords: absolute distance measurement; dispersive interferometry; Fourier transform; optical frequency comb; excess fraction method

Online: 25 April 2023 (10:24:28 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.2216.v1

Impact of Cooperation and Intra-Specific Competition of Prey on the Stability of Prey-Predator Models with Refuge

Soumyadip Pal, Fahad Al Basir, Santanu Ray

Subject: Computer Science And Mathematics, Applied Mathematics Keywords: Mathematical modeling; Bifurcation analysis; Global stability; Direction of Hopf bifurcation; Numerical simulations

Online: 31 May 2023 (10:42:32 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.0327.v1

Microbiological and Physico-chemical Characteristics of Black Tea Kombucha Fermented with a New Zealand Starter Culture

Boying Wang, Kay Rutherfurd-Markwick, Xue-Xian Zhang, Anthony N. Mutukumira

Subject: Biology And Life Sciences, Food Science And Technology Keywords: Kombucha; Acetic acid bacteria; yeast; Komagataeibacter rhaeticus; Zygosaccharomyces lentus; Debaryomyces prosopidis

Online: 5 May 2023 (07:59:43 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201702.0078.v1

Resonant Rectifier ICs for Piezoelectric Energy Harvesting Using Low-voltage Drop Diode Equivalents

Amad Ud Din, Seneke Chamith Chandrathna, Jong-Wook Lee

Subject: Engineering, Energy And Fuel Technology Keywords: AC-DC converters; energy harvesting; piezoelectric; rectifier

Online: 20 February 2017 (18:23:13 CET)

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Preprint ARTICLE | doi:10.20944/preprints202404.0282.v1

Green-Powered Electric Public Mobility: Integrating Urban and Interurban Routes – A Case Study Analysis

Alessandro Franco, Giovanni Lutzemberger, Marco Giorgio Bevilacqua, Francesco Giuseppe Quilici, Matilde Vezzani

Subject: Engineering, Transportation Science And Technology Keywords: Electrification; Renewable energy integration; Public transit; Photovoltaic systems; Sustainable urban development; Energy independence; Modular solution.

Online: 3 April 2024 (10:34:08 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202308.1534.v1

Study of the Mechanism of Degradation of Ladder-Like Polyhedral Oligomeric Silsesquioxanes by Fourier Transform Infrared Spectroscopy

Shengdong Xiao, Jude O. Iroh

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: Amine terminated Polyhedral Oligomeric Silsesquioxanes; Silica nanoparticles; Degradation rate; Degradation mechanism; Activation energy

Online: 23 August 2023 (03:14:49 CEST)

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Polyhedral Oligomeric Silsesquioxanes (POSS) are one of the smallest silica nano particles. The presence of ordered ladder-like or cage conformation in their structure leads to remarkable thermal stability far greater than that for a linear polysiloxane. Reinforcement with nano particles is one of the recently favored strategy used to enhance the performance of polymers materials. The cyclic silica structure present in POSS ensures excellent thermal and mechanical stability. As a reinforcing filler, POSS can enhance the resistance of polymer matrix against pyrolysis and corrosion. In this paper, amine-terminated POSS with ladder like structure was synthesized by condensation of hydrolyzed aminosilane coupling agent. The ladder-like structure of POSS severely limits the motion of the chain backbone. The absence of phase transition for the synthesized POSS was confirmed by differential scanning calorimetry (DSC). Thermogravimetric analysis (TGA) was utilized to evaluate the thermal stability of POSS. TGA data show that the ladder-like POSS reported here has high char yield of about 75 % in nitrogen atmosphere and 54% in air atmosphere at 800℃. The TGA derivative curves show that the degradation of ladder-like POSS involves multiple stages and that the degradation rate is directly proportional to the heating rate. With the aid of Fourier Transform Infrared Spectroscopy (FT-IR), the cyclic structure of Si-O-Si bonding was determined to be the predominant structure. By analyzing the FTIR spectra of the cured POSS residue obtained at the specified temperatures, the detailed degradation mechanism of POSS was inferred. From the FTIR spectra of the low temperature cured samples, it was shown that the terminal silanol group was eliminated below 400℃. Some intermediate polymeric siloxane structures were observed by means of FT-IR and they eventually transitioned into silica which is the final product of pyrolysis of POSS. The presence of the FTIR transmission peaks at 1000 and 1100 cm-1, due to asymmetrical vertical and horizontal stretching of Si-O-Si, were the key evidence for the inferred ladder-like structure of POSS.

Preprint REVIEW | doi:10.20944/preprints202404.0448.v1

Exploring Evolution and Trends: A Bibliometric Analysis and Scientific Mapping of Multiobjective Optimization Applied to Hybrid Microgrid Systems

Kawakib Arar Tahir, Javier Ordóñez, Juanjo Nieto

Subject: Engineering, Energy And Fuel Technology Keywords: Renewable energy sources; Hybrid energy system; Microgrid; Multiobjective optimization; Bibliometric Analysis; SciMAT

Online: 5 April 2024 (16:56:12 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201903.0068.v2

Non-Dispersive Extraction of Ge(IV) from Aqueous Solutions by Cyanex 923: Transport and Modeling Studies

Hossein Kamran Haghighi, Mehdi Irannajad, Maria Teresa Coll, Ana Maria Sastre

Subject: Chemistry And Materials Science, Chemical Engineering Keywords: germanium; supported liquid membrane; transport; Cyanex 923; modeling

Online: 29 May 2019 (04:54:50 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201810.0153.v1

Cosmic-Ray Extremely Distributed Observatory: Status and Perspectives

Dariusz Gora

Subject: Physical Sciences, Atomic And Molecular Physics Keywords: Cosmic-rays; Citizien Science; Extensive air showers

Online: 8 October 2018 (15:45:43 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201703.0067.v1

Global Existence, Exponential Decay and Finite Time Blow-up of Solutions for a Class of Semilinear Pseudo-parabolic Equations with Conical Degeneration

Gang Li, Jiangyong Yu, Wenjun Liu

Subject: Computer Science And Mathematics, Analysis Keywords: blow-up; semilinear pseudo-parabolic equations; critical initial energy; conical degeneration

Online: 13 March 2017 (09:56:13 CET)

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Preprint ARTICLE | doi:10.20944/preprints202401.0195.v1

Digital Miniature Cathode Ray Magnetometer

Marcos Turqueti, Gustav Wagner, Azriel Goldschmidt, Rebecca Carney

Subject: Engineering, Electrical And Electronic Engineering Keywords: Magnetometer; Magnetic Probe; Imager; Cathode Ray; Undulator; DSP; CMOS sensor; Cryo-genic; Cold Electronics; Magnetoencephalography

Online: 4 January 2024 (03:38:17 CET)

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Preprint ARTICLE | doi:10.20944/preprints202202.0227.v1

On the Ray-Wavefront Duality

Antonio Diaz-Cano, Francisco Gonzalez-Gascon, Luis Sanchez-Soto

Subject: Physical Sciences, Optics And Photonics Keywords: geometrical optics; ray equation; eikonal equation; wavefronts

Online: 18 February 2022 (09:02:06 CET)

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Preprint ARTICLE | doi:10.20944/preprints202010.0298.v2

Cosmic Ray Extremely Distributed Observatory

Piotr Homola, Dmitriy Beznosko, Gopal Bhatta, Łukasz Bibrzycki, Łukasz Bratek, Michalina Borczyńska, Nikolay M. Budnev, Dariusz Burakowski, David Edwin Alvarez-Castillo, Kevin Almeida Cheminant, Aleksander Ćwikła, Punsiri Dam-o, Niraj Dhital, Alan Duffy, Piotr Głownia, Krzysztof Gorzkiewicz, Dariusz Góra, Alok C. Gupta, Zuzana Hlávková, Martin Homola, Joanna Jałocha, Robert Kamiński, Michał Karbowiak, Marcin Kasztelan, Renata Kierepko, Marek Knap, Péter Kovács, Szymon Kuliński, Bartosz Łozowski, Marek Magryś, Mikhail V. Medvedev, Justyna Mędrala, Jerzy W. Mietelski, Justyna Miszczyk, Alona Mozgova, Antonio Napolitano, Vahab Nazari, Y. Jack Ng, Michał Niedźwiecki, Cristina Oancea, Bogusław Ogan, Gabriela Opiła, Krzysztof Oziomek, Maciej Pawlik, Marcin Piekarczyk, Bożena Poncyljusz, Jerzy Pryga, Matías Rosas, Krzysztof Rzecki, Jilberto Zamora-Saa, Katarzyna Smelcerz, Karel Smolek, Weronika Stanek, Jarosław Stasielak, Slawomir Stuglik, Jolanta Sulma, Oleksandr Sushchov, Manana Svanidze, Kyle Tam, Arman Tursunov, José-M. Vaquero, Tadeusz Wibig, Krzysztof W. Woźniak

Subject: Physical Sciences, Nuclear And High Energy Physics Keywords: cosmic rays; cosmic ray ensembles; extensive air showers; large scale cosmic ray correlations; CREDO Collaboration

Online: 15 October 2020 (16:13:43 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201609.0074.v1

Regulation of ERK and AKT Pathways by Hepatitis B Virus X Protein via Notch1 Pathway in Hepatocellular Carcinoma

Bo Liao, Hong-Hao Zhou, Hui-Fang Liang, Chang-Hai Li

Subject: Medicine And Pharmacology, Oncology And Oncogenics Keywords: hepatocellular carcinoma; hepatitis B virus X protein; Notch1 pathway; ERK; AKT

Online: 21 September 2016 (09:49:13 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0744.v1

Analyzing the Possibilities of Using the Scilit Platform to Identify Current Energy Efficiency and Conservation Issues

Boris Chigarev

Subject: Engineering, Energy And Fuel Technology Keywords: energy efficiency, energy conservation, Scilit, bibliometric record analysis, text clustering

Online: 10 April 2024 (14:57:33 CEST)

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Purpose of publication: - Preparation of bibliometric data exported from the Scilit platform on energy efficiency and conservation for further analysis to identify relevant research topics. - To identify potential issues in the processing of data exported from the Scilit platform. - Providing colleagues with the opportunity to use the prepared data and examples of their analysis for independent research on topical issues of energy efficiency and energy conservation using materials provided by the Scilit platform. Research Materials: Files in CSV and RIS formats exported from Scilit for the query "energy conservation OR efficiency" in Common Fields [Title, Abstract, Keyword], using filters: Content Type → Journal Article; Year→2021-2023; Subject → Industrial Engineering (29.8K), Energy and Fuel Technology (9.8K), Manufacturing Engineering (9.2K). A total of 30K records sorted by their relevance (10K for each year) were exported. Data are current as of 14-03-2024. Methods: Preprocessing of title, annotation, and keyword field texts using lemmatization dictionaries collected on GitHub, removal of keywords taken from GATE and spaCy, and "manual" editing. Using VOSviewer to analyze publication topics by clustering keywords based on their co-occurrence. Using Scimago Graphica to build bubble diagrams.Application of the GSDMM algorithm for clustering bibliometric records by title and annotation texts. Creation of a dictionary for this algorithm using the keyword field.Use of the Carrot2 demo version and the NMF algorithm for a more detailed analysis of the topics of the record clusters obtained from GSDMM. Results: are presented in the form of initial and interim tables and graphs obtained in the course of this study. The full tables are provided as references to the attached materials. Supplementary material for this preprint on figshare: Chigarev, Boris (2024). Supplementary material for preprint "Analyzing the Possibilities of Using the Scilit Platform to Identify Current Energy Efficiency and Conservation Issues". figshare. Dataset. https://doi.org/10.6084/m9.figshare.25574058.v1

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)

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Preprint ARTICLE | doi:10.20944/preprints201608.0235.v1

American’s Energy Future: An Analysis of the Proposed Energy Policy Plans in Presidential Election

Ming-Hsun Cheng, Minliang Yang, Yu Wang

Subject: Social Sciences, Political Science Keywords: president election; renewable energy; energy future; public opinion; polarization

Online: 31 August 2016 (08:34:50 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202402.1371.v1

The Influence of Geometry on the Energy Capture of a Point Absorber Wave Energy Converter in the Coast of Mexico

Alejandro Martinez Flores, Ayrton Alfonso Medina Rodríguez, Edgar Mendoza, Rodolfo Silva

Subject: Engineering, Other Keywords: Wave energy converter, heaving buoy, mild slope equation, hydrodynamic response, energy absorption.

Online: 23 February 2024 (11:14:41 CET)

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Preprint REVIEW | doi:10.20944/preprints201908.0057.v1

Hijacking the Host Immune Cells by Dengue Virus: Molecular Interplay of Receptors and Dengue Virus Envelope

Feroza Begum, Sandeepan Das, Debica Mukherjee, Upasana Ray

Subject: Biology And Life Sciences, Virology Keywords: DENV; tropism; receptors; entry; immune cells

Online: 5 August 2019 (08:14:40 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201608.0071.v1

Estimation of Distribution Algorithm for Energy-Efficient Scheduling in Turning Processes

Fang Wang, Yunqing Rao, Chaoyong Zhang, Qiuhua Tang, Liping Zhang

Subject: Engineering, Mechanical Engineering Keywords: energy-efficiency scheduling; flexible flow shop; estimation of distribution algorithm; turning processing

Online: 8 August 2016 (08:49:49 CEST)

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Preprint REVIEW | doi:10.20944/preprints202404.1713.v1

A Comprehensive Review of Fragile X Syndrome and Fragile X Premutation Associated Conditions in Africa

Chioma N.P. Mbachu, Ikechukwu Mbachu, Randi Hagerman

Subject: Clinical Medicine, Medicine And Pharmacology Keywords: Fragile X syndrome; Fragile X premutation associated conditions; Africa

Online: 26 April 2024 (08:15:57 CEST)

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Preprint REVIEW | doi:10.20944/preprints202311.0587.v1

Women of Color in the Health Professions: A Scoping Review of the Literature

Olihe Okoro, Omolayo Umaru, Meghana Ray

Subject: Social Sciences, Gender And Sexuality Studies Keywords: Intersectionality; Healthcare professions; Women of color; Pharmacy; Racial/Ethnic inequity; Gender inequity; Discrimination; Professional advancement; Underrepresentation

Online: 9 November 2023 (07:29:41 CET)

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Preprint REVIEW | doi:10.20944/preprints202004.0351.v1

BCG Vaccination Strategy for Preventaion against COVID-19: Hype or Hope?

Keshav Rajarshi, Aroni Chatterjee, Shashikant Ray

Subject: Biology And Life Sciences, Immunology And Microbiology Keywords: COVID-19; BCG immunization; SARS-CoV-2; immunity and tuberculosis

Online: 19 April 2020 (13:55:50 CEST)

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Preprint REVIEW | doi:10.20944/preprints202402.0784.v1

A Review of 3-D Printing Batteries

Maryam Mottaghi, Joshua M. Pearce

Subject: Engineering, Energy And Fuel Technology Keywords: 3-D printing; Additive Manufacturing; Batteries; Electricity; Energy; Energy storage; Open source; Open source hardware

Online: 14 February 2024 (09:44:29 CET)

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Preprint ARTICLE | doi:10.20944/preprints202202.0205.v1

Associations between Taste and Smell Sensitivity, Preference, and Quality of Life in Healthy Aging - The NutriAct Family Study Examinations (NFSE) Cohort

Shirley X. L. Lim, Richard Höchenberger, Niko A Busch, Manuela Bergmann, Kathrin Ohla

Subject: Social Sciences, Psychology Keywords: taste; smell; quality of life; sensitivity; threshold; QUEST

Online: 17 February 2022 (10:00:37 CET)

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Preprint REVIEW | doi:10.20944/preprints202308.0847.v1

MicroRNA-34 Family in Cancers: Role, Mechanism, and Therapeutic Potential

Junjiang Fu, Saber Imani, Mei-Yi Wu, Ray-Chang Wu

Subject: Biology And Life Sciences, Life Sciences Keywords: microRNA; miR‐34; tumor suppressor; miRNA therapy

Online: 10 August 2023 (10:53:25 CEST)

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Preprint REVIEW | doi:10.20944/preprints202306.0166.v1

Vibrational Spectroscopy of Phytochromes

Peter Hildebrandt

Subject: Biology And Life Sciences, Biophysics Keywords: Raman, IR, spectroscopy, phytochrome, tetrapyrrole, photoswitch

Online: 2 June 2023 (09:01:39 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202301.0066.v2

Longitudinal Assessment of Plasma Syndecan-1 Predicts 60-Day Mortality in Patients with COVID-19

Quan Zhang, Zhan Ye, Antonia Bignotti, X. Long Zheng

Subject: Medicine And Pharmacology, Pathology And Pathobiology Keywords: COVID-19; endothelial dysfunction; glycocalyx degradation; sydencan-1; and mortality

Online: 9 January 2023 (03:21:59 CET)

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Preprint ARTICLE | doi:10.20944/preprints202212.0450.v1

Klein-Gordon, Dirac and Schrodinger Equations, Matter and Wave Function Collapses, Photon Momenta and the Gamma Ray Burst based on the 4-D Euclidean Space

Jae-Kwang Hwang

Subject: Physical Sciences, Particle And Field Physics Keywords: P4 = TcP symmetry; Matter collapse; Wave function collapse; Klein paradox; Continuity equations; Negative energy solutions; Gamma ray burst; Photon momenta

Online: 23 December 2022 (07:57:12 CET)

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The negative energy solutions of the Klein-Gordon and Dirac equations have been used to define the antiparticle with the positive energy from the Feynman - Stueckelberg interpretation in the standard model based on the 4-D Minkowski space with the relative time. The negative energy solutions of the Klein-Gordon and Dirac equations are used to define the antiparticles with the negative energy in the present 3-D quantized space model. Note that all the present results are based on the 4-D Euclidean space with the absolute time (t) and relative time (t_l). Then the particle with the positive energy and antiparticle with the negative energy have the 4-D P₄ = TCP = T_cP symmetry. The continuity equations are derived from the Klein-Gordon, Dirac and Schrodinger equations. The Klein-Gordon and Schrodinger equations with the potential barriers are solved. The Klein paradox is explained by using the pair production of the electron with the positive energy and positron with the negative energy under the P₄ = _TcP symmetry, The effective velocity ( c_eff=√2 " c " ) and effective energy ("Etl =" √2 E ) along the relative time axis (ctl) give the relative time momentum of "p_tl"=E_tl/c_eff =(√2 E)/(√2 c)=E/c=p_t=p_x. This indicates that the photons with the energy of E have the constant photon velocity of c and the constant photon momentum of "ptl"=E_tl/c_eff =(√2 E)/(√2 c)=E/c=p_t=p_x. For the negative energy particles, the space momentum directions are opposite to the particle velocity directions because the energy is negative. And the matter collapse to the photons at the very high particle velocity is discussed from the length expansion. It is, for the first time, proposed that the gamma ray burst is originated from the matter collapse to the photons near the black hole. Also, the wave function collapse is explained from the length expansion. The wave function collapse takes place when the measurement makes the particle velocity to be zero. It is concluded that the negative energy solutions of the Klein-Gordon and Dirac equations support the existence of the partner antimatter universe with the negative energy and negative time direction. Our matter universe has the positive energy and the positive time direction.

Preprint ARTICLE | doi:10.20944/preprints202310.1833.v1

Lump Waves in a Spatial Symmetric Nonlinear Dispersive Wave Model in (2+1)-Dimensions

Wen-Xiu Ma

Subject: Computer Science And Mathematics, Applied Mathematics Keywords: Lump wave; Hirota bilinear form; Soliton; Symbolic computation; Nonlinearity; Dispersion

Online: 30 October 2023 (07:05:58 CET)

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Preprint ARTICLE | doi:10.20944/preprints201810.0120.v1

Optimised Performance of Non-Dispersive Infrared Gas Sensors Using Multilayer Thin Film Bandpass Filters

Pinggui Wang, Xiuhua Fu, Des Gibson, Lewis Fleming, Cheng Li, Manu Muhiyudin, Shigeng Song, David Hutson, David Moodie, Calum MacGregor, Matthew Steer

Subject: Physical Sciences, Optics And Photonics Keywords: NDIR; methane; sensor; infrared; thin film; III-V; heterostructure; bandpass; microwave; sputter; MBE

Online: 7 October 2018 (10:52:34 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.1194.v1

Nonlinear Electrоmagnetic Properties of Thinfilm Nanocomposites (CoFeZr)_x(MgF₂)_100-x

Evelina Pavlovna Domashevskaya, Sergey Alexandrovich Ivkov, Pavel Vladimirovich Seredin, Dmitry Leonidovich Goloshchapov, Konstantin Alexandrovich Barkov, Stanislav Viktorovich Ryabtsev, Yrii Gavriilovich Segal, Alexander Victorovich Sitnikov, Elena Alexandrovna Ganshina

Subject: Physical Sciences, Condensed Matter Physics Keywords: nanocomposites; nanocrystals; magnetoresistance; percolation threshold; magneto-optical properties; transversal Kerr effect; superparamagnetic; soft ferromagnetic

Online: 29 April 2023 (03:17:33 CEST)

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The aim of this work is a comprehensive study of the effect of variable atomic composition and structural-phase state of (CoFeZr)x(MgF2)100-x nanocomposites (NCs) on their nonlinear electronic and magnetic/magneto-optical properties. Micrometer-thick nanocomposites layers on the glass substrates were obtained by ion-beam sputtering of a composite target in the argon atmosphere in a wide range of compositions x=9-51at.% The value of the resistive percolation threshold xper=34 at.%, determined from the concentration dependences of the electrical resistance of NCs, coincides with the beginning of nucleation of metallic nanocrystals CoFeZr in MgF2 dielectric matrix. The absolute value of maximum magnetoresistance of NCs is 2.4 % in a magnetic field of 5.5 kOe at x=25 at.%, up to the percolation threshold. Two maxima appear in the concentration dependences of magneto-optical transversal Kerr effect, one of which at x = 34 at.% corresponds to the formation of CoFeZr alloy nanocrystals of a hexagonal structure, and the second one at x=45 at.% corresponds to the phase transition of nanocrystals from a hexagonal to a cubic body-centered structure. The magnetic percolation threshold in (CoFeZr)x(MgF2)100-x system at xfm=34 at.% with the appearance of a hysteresis loop and a coercive force of Hc≈ 8 Oe, coincides with the resistive percolation threshold xper=34 at.%. Concentration dependence of the coercive force showed that at low contents of metallic alloy x<30 at.% NCs are superparamagnetic (Hc=0). With an increase of the alloy content, in the region of magnetic and resistive percolation thresholds NCs exhibit a magnetically soft ferromagnetic character and do not change it far beyond the percolation threshold with the maximum value of the coercive force Hc< 30 Oe. Decrease in magnetic order and soft ferromagnetic are influenced by the diamagnetic phase FeF2 that we discovered at the interface of magnetic nanocrystals CoFeZr with a dielectric matrix MgF2 by the Mössbauer spectroscopy.

Preprint ARTICLE | doi:10.20944/preprints202207.0061.v1

Coastal Upwelling in the Bay of Bengal: Role of Local and Remote Windstress

Sthitapragya Ray, Debadatta Swain, M. M. Ali, Mark A. Bourassa

Subject: Environmental And Earth Sciences, Oceanography Keywords: Coastal upwelling; Upwelling index; Scatterometer; Wind stress; Kelvin Wave; Ekman Transport

Online: 5 July 2022 (05:36:03 CEST)

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Preprint REVIEW | doi:10.20944/preprints202403.0630.v1

Progress and Evaluation of Compressed Carbon Dioxide Energy Storage Systems: A Review

Hailing Ma, Yao Tong, Xiao Wang, Hongxu Wang

Subject: Engineering, Chemical Engineering Keywords: Carbon dioxide energy storage; Thermodynamic analysis; Exergy analysis; Energy storage; System model

Online: 12 March 2024 (04:23:19 CET)

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Preprint ARTICLE | doi:10.20944/preprints202403.0546.v1

Multi-Time-Scale Energy Storage Optimization Configuration for Power Balance in Distribution Systems

Qiuyu Lu, Xiaoman Zhang, Yinguo Yang, Qianwen Hu, Guobing Wu, Yuxiong Huang, Yang Liu, Gengfeng Li

Subject: Engineering, Electrical And Electronic Engineering Keywords: energy storage planning; multiple time scales; power balance

Online: 11 March 2024 (09:31:50 CET)

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Preprint ARTICLE | doi:10.20944/preprints202209.0038.v1

Coastal Upwelling in the western Bay of Bengal: Role of Local and Remote Windstress

Sthitapragya Ray, Debadatta Swain, M. M. Ali, Mark A. Bourassa

Subject: Environmental And Earth Sciences, Oceanography Keywords: Coastal upwelling; Upwelling index; Scatterometer; Wind stress; Kelvin Wave; Ekman Transport

Online: 2 September 2022 (09:57:06 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202004.0281.v2

Mutation Hot Spots in Spike Protein of SARS-CoV-2 Virus

Feroza Begum, Arup Kumar Banerjee, Upasana Ray

Subject: Biology And Life Sciences, Virology Keywords: COVID-19; SARS-CoV-2; S protein; RBD; S1; S2

Online: 7 September 2020 (04:15:59 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201804.0068.v1

Researcher Conduct Determines Data Reliability

Mark N. Wass, Larry Ray, Martin Michaelis

Subject: Social Sciences, Behavior Sciences Keywords: reproducibility crisis; replication crisis; data reliability; bias; publication bias; meta-research

Online: 5 April 2018 (10:54:09 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201711.0147.v1

A Comparative Analysis of the Proteins and Lipids in Breast, Leg, and Thigh Meats of a Commercial Domesticated Turkey

W. Keith Ray, Sherry B. Hildreth, Judith M. Jervis, Richard F. Helm

Subject: Biology And Life Sciences, Food Science And Technology Keywords: glycolysis; lipidome; meat; mitochondria; oxidation; proteome; turkey

Online: 23 November 2017 (03:11:04 CET)

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Preprint REVIEW | doi:10.20944/preprints202306.2011.v1

Gamma Ray Pulsars and Opportunities for the MACE Telescope

Atul Pathania, K. K. Singh, Kuldeep Kumar Yadav

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Pulsars; gamma-rays; MACE Telescope

Online: 29 June 2023 (07:23:19 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201910.0007.v1

Prediction of Terpenoids Toxicity Based on Quantitative Structure-Activity Relationships Model

Rosa Perestrelo, Catarina Silva, Miguel X. Fernandes, José S. Câmara

Subject: Chemistry And Materials Science, Food Chemistry Keywords: terpenoids; Vibrio fischeri; toxicity; QSAR; heuristic method

Online: 2 October 2019 (02:55:05 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.0016.v1

PECVD Synthesis and Thermoelectric Properties of Thin Films of Lead Chalcogenides (PbTe)_1-x(PbS)_x

Yurii Mikhailovich Kuznetsov, Leonid Alexandrovich Mochalov, Mikhail Vladimirovich Dorokhin, Diana Georgievna Fukina, Mikhail Alexandrovich Kudryashov, Yuliya Pavlovna Kudryashova, Anton Vladimirovich Zdoroveyshchev, Daniil Antonovich Zdoroveyshchev, Irina Leonidovna Kalentyeva

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: lead chalcogenides; thin-film thermoelectric converters; inorganic synthesis; Seebeck coefficient; resistivity; thermoelectric figure of merit; power factor

Online: 1 May 2023 (04:26:00 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202403.1486.v1

Matchmaking in Off-Grid Energy System Planning: A Novel Approach for Integrating Residential Electricity Demands and Productive Use of Electricity

Nikolas Schöne, Tim Ronan Britton, Edouard Delatte, Nicolas Saincy, Boris Heinz

Subject: Engineering, Energy And Fuel Technology Keywords: Rural electrification; Productive use of electricity; Off-grid; Community energy; Energy system planning; Sustainable development; Key informant interviews; Energy system modeling; Statis-tical analysis; Co-creation.

Online: 25 March 2024 (13:33:14 CET)

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Preprint ARTICLE | doi:10.20944/preprints202402.1060.v1

On the Interconnection of the Intelligent Electrical Grids and Load Forecasting Issues

Sulokoka Mario, Zervas Orfeas, Charalambos Elias, Panagiotis K. Gkonis, Eleftherios Tsampasis

Subject: Engineering, Electrical And Electronic Engineering Keywords: Smart Grid; Renewable Energy Sources; Electric Load Forecast; Intelligent Electric Networks.

Online: 20 February 2024 (04:02:08 CET)

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Preprint ARTICLE | doi:10.20944/preprints201808.0139.v2

Energy-Efficient Forest Fire Prediction Model based on Two-Stage Adaptive Duty-Cycled Hybrid X-MAC Protocol

Jin-Gu Kang, Dong-Woo Lim, Jin-Woo Jung

Subject: Computer Science And Mathematics, Information Systems Keywords: Forest Fire; Prediction Model; Energy-Efficient; Sensors; WSN; X-MAC; Hybrid; Adaptive; Duty-Cycle; Protocol

Online: 3 September 2018 (10:09:11 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.0556.v1

Effect of Premixed Ethanol Ratio Based on the Same Heating Value on the Atomization of Diesel Fuel Injected in the Cylinder

Se Hun Min, And Hyun Kyu Suh

Subject: Engineering, Mechanical Engineering Keywords: Keywords Air Emissions from Fossil Fuel Combustion; Fuel Combustion; Energy Conversion/system; Energy Systems Analysis

Online: 19 April 2023 (07:18:20 CEST)

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