Search | Preprints.org

Preprint ARTICLE | doi:10.20944/preprints201806.0500.v1

Identification of Nanocellulose Retention Characteristics in Porous Media

Reidun C. Aadland, Carter J. Dziuba, Ellinor B. Heggset, Kristin Syverud, Ole Torsæter, Torleif Holt, Ian D. Gates, Steven L. Bryant

Subject: Chemistry And Materials Science, Nanotechnology Keywords: nanocellulose; retention; petroleum; energy; oil; petrochemical; cellulose nanocrystals; nanoparticle

Online: 30 June 2018 (15:15:54 CEST)

Show abstract| Download PDF| Share

Preprint REVIEW | doi:10.20944/preprints202112.0017.v1

Temporal Muscle and Stroke—A Narrative Review on Current Meaning and Clinical Applications of Temporal Muscle Thickness, Area, and Volume

Masahito Katsuki, Yukinari Kakizawa, Akihiro Nishikawa, Yasunaga Yamamoto, Toshiya Uchiyama, Masahiro Agata, Naomichi Wada, Shin Kawamura, Akihito Koh

Subject: Biology And Life Sciences, Food Science And Technology Keywords: frailty; muscle volume; nutritional status; prognostic factor; sarcopenia; skeletal muscle mass; stroke; temporal muscle thickness.

Online: 1 December 2021 (13:12:03 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202111.0410.v1

Design and Implementation of Efficient Transmission of Cloud Data in Wireless Media

Virendra Pandharipant Nikam, Sheetal S Dhande

Subject: Engineering, Control And Systems Engineering Keywords: Data compression; data hiding; psnr; mse; virtual data; public cloud; quantization error

Online: 22 November 2021 (15:17:12 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202011.0646.v1

Online Multilingual Hate Speech Detection: Experimenting with Hindi and English Social Media

Neeraj Vashistha, Arkaitz Zubiaga

Subject: Computer Science And Mathematics, Computer Science Keywords: social media; hate speech; text classification

Online: 25 November 2020 (14:12:07 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202009.0751.v1

Meshless Analysis of Nonlocal Boundary Value Problems in Anisotropic and Inhomogeneous Media

Zaheer-ud-Din Muhammad, Muhammad Ahsan, Masood Ahmad, Wajid Khan, Emad E. Mahmoud, Abdel-Haleem Abdel-Aty

Subject: Physical Sciences, Acoustics Keywords: Meshless method; Integrated MQ RBF; Steady-state heat conduction equation

Online: 30 September 2020 (14:31:00 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201901.0172.v2

How Does Contrast Media Affect Cardiac Markers and Coagulation Tests? Experimental Study

Mustafa Begenc Tascanov, Ataman Gönel

Subject: Medicine And Pharmacology, Medicine And Pharmacology Keywords: contrast media; troponin; Nt-proBNP; interference

Online: 20 January 2019 (10:40:23 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202305.0318.v1

Determination of the Equivalent Thickness of a Taiko Wafer using ANSYS Finite Elements Analysis

Vincenzo Vinciguerra, Giuseppe Luigi Malgioglio, Antonio Landi, Marco Renna

Subject: Engineering, Mechanical Engineering Keywords: Taiko Wafers; Finite Elements Analysis (FEA); ANSYS thermomechanical simulations

Online: 5 May 2023 (07:36:04 CEST)

Show abstract| Download PDF| Share

The successful handling of large semiconductor wafers is crucial for scaling up their production. Early-stage warpage control allows to prevent undesirable asymmetric warpage, known as wafer bifurcation or buckling. Indeed, even in a gravity-free environment, thinning an 8" or 12" semiconductor wafer can result in warpage and bifurcation. To mitigate this issue, the taiko method, which involves creating a thicker ring region around the rim of the wafer, has been widely used. Previous research has focused on the theoretical factors affecting the warpage of a backside metalized taiko wafer. This work extends the case to a front-side metalized taiko wafer and introduces the concept of the equivalent thickness of a taiko wafer. The equivalent thickness of a taiko wafer, influenced by the ring region, lies in between the thickness of the central region and that of the annular region. Because of the limited number of taiko wafers that can be produced on a production line, modelling can be beneficial. In this work we compared the results of a developed analytical model with those obtained from a finite element analysis (FEA) approach with ANSYSY® software to model the equivalent thickness of a taiko wafer. We investigated the curvature as a function of the stress of the metal layer, considering key design factors such as the substrate region thickness, the thickness of the thin metal film, the step height, and the width of the ring region. By systematically varying the thickness of the central region of the taiko wafer, we explored the curvature as a function of stress induced by thermal load in the linear regime and determined the slopes in the linear region of the curvature vs. stress curves. The aim of this study is to identify regularities and similarities with the Stoney equation and investigate the validity of the analytical approach for the case of a taiko substrate. It results that there is a good agreement between the analytical model of a taiko wafer and the numerical analysis gained by the FEA methods.

Preprint COMMUNICATION | doi:10.20944/preprints202309.1631.v2

Effect of Film Thickness on Microstructural and Magnetic Properties of Lithium Ferrite Films Prepared on SrTiO₃ (001) Substrates

Kun Liu, Ruyi Zhang, Lu Lu, Jiankang Li, Songyou Zhang

Subject: Chemistry And Materials Science, Electronic, Optical And Magnetic Materials Keywords: Lithium ferrite; Film thickness; Defects; Magnetic properties; Electron microscopy

Online: 17 November 2023 (09:00:43 CET)

Show abstract| Download PDF| Supplementary Files| Share

Preprint ARTICLE | doi:10.20944/preprints202101.0539.v1

Binder Saturation, Layer Thickness, Drying Time and Their Effects on Dimensional Tolerance and Density of Cobalt Chrome- Tricalcium Phosphate Biocomposite

Ruprecht John, Kuldeep Agarwal, Shaheen Ahmed

Subject: Engineering, Industrial And Manufacturing Engineering Keywords: Additive Manufacturing; Design

Online: 26 January 2021 (12:18:45 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202404.0518.v1

Algorithm-Literacy as a Subset of Media and Information Literacy: Competences and Design Considerations

Divina Frau-Meigs

Subject: Social Sciences, Education Keywords: Media and Information Literacy; Algorithm-literacy; Artificial Intelligence literacy; competence framework; course design; information; disinformation

Online: 8 April 2024 (10:52:54 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202310.0129.v1

Minimally Invasive Cervical Styloidectomy in Stylohyoid Syndrome (Eagle Syndrome)

Jakub Bargiel, Michał Gontarz, Tomasz Marecik, Paweł Szczurowski, Krzysztof Gąsiorowski, Grażyna Wyszyńska-Pawelec, Jan Zapała

Subject: Medicine And Pharmacology, Surgery Keywords: Eagle Syndrome; Stylalgia; Minimally Invasive Styloidectomy; MICS; Styloidectomy; Carotid Artery Syndrome; Stylohyoid Chain; Styloid Process

Online: 3 October 2023 (09:26:43 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202206.0230.v1

How the First Year of the COVID-19 Pandemic Impacted Patients’ Care in the Vascular Surgery Divisions of the Southern Regions of the Italian Peninsula

Eugenio Martelli, Giovanni Sotgiu, Laura Saderi, Massimo Federici, Giuseppe Sangiorgi, Matilde Zamboni, Allegra Rosa Martelli, Giancarlo Accarino, Giuseppe Bianco, Francesco Bonanno, Umberto Marcello Bracale, Enrico Cappello, Giovanni Cioffi, Giovanni Colacchio, Adolfo Crinisio, Salvatore De Vivo, Carlo Patrizio Dionisi, Loris Flora, Giovanni Impedovo, Francesco Intrieri, Luca Iorio, Gabriele Maritati, Piero Modugno, Mario Monaco, Giuseppe Natalicchio, Vincenzo Palazzo, Fernando Petrosino, Francesco Pompeo, Raffaele Pulli, Davide Razzano, Maurizio Ruggero Ruggieri, Carlo Ruotolo, Paolo Sangiuolo, Gennaro Vigliotti, Pietro Volpe, Antonella Biello, Pietro Boggia, Michelangelo Boschetti, Enrico Maria Centritto, Flavia Condò, Lucia Cucciolillo, Amodio Salvatore D'Amodio, Mario De Laurentis, Claudio Desantis, Daniela Di Lella, Giovanni Di Nardo, Angelo Disabato, Ilaria Ficarelli, Angelo Gasparre, Antonio Nicola Giordano, Alessandro Luongo, Mafalda Massara, Vincenzo Molinari, Andrea Padricelli, Marco Panagrosso, Anna Petrone, Serena Pisanello, Roberto Prunella, Michele Tedesco, Alberto Maria Settembrini

Subject: Medicine And Pharmacology, Hematology Keywords: COVID-19; carotid stenosis; abdominal aortic aneurysm; chronic limb-threatening ischemia; amputation; deep venous thrombosis

Online: 16 June 2022 (04:40:54 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202401.0630.v1

Decoding Online Teeth Whitening Videos: Navigating Social Media Complexities

Panagiota Tziovara, Angeliki Styliani Tzortzakaki, Zinovia Chatzidaki, Maria Antoniadou

Subject: Public Health And Healthcare, Other Keywords: teeth whitening; whitening techniques; You tube; professional videos; amateur videos; dental safety; social media impact; dental health education

Online: 9 January 2024 (04:41:58 CET)

Show abstract| Download PDF| Share

In the era of digital information consumption, YouTube has emerged as a prominent platform for disseminating knowledge across various domains. One such area that has gathered significant attention is teeth whitening, with a plethora of videos offering insights into professional proce-dures, home remedies, and personal experiences. This study delves into the vast landscape of teeth whitening content on YouTube, meticulously categorizing videos into professional and amateur domains. The aim is to critically analyze the information presented, considering its accuracy, re-liability, and potential impact on public perceptions and oral health choices. A total of 100 videos in Greek (n1= 73) and in English (n2= 27) were studied. The analysis was based on views, likes, publication year, duration, presence of background music, and the presence of a description. The completion date of the search was October 7, 2023. Professional videos predominantly present whitening as a painless, conservative, and economical procedure, emphasizing safety measures. Bleaching mechanisms involving hydrogen peroxide and carbamide are explored, with various application techniques discussed, including whitening strips, splints, and in-office procedures. Contradictory findings on the efficacy of home versus in-office treatments are highlighted. In-ternal and external discoloration factors are delineated, with contraindications specified. Amateur videos, garnering greater public appeal, present personal experiences, product promotions, and homemade remedies, reflecting a concerning trend of misinformation. The analysis incorporates viewer engagement metrics, emphasizing the impact of non-professional content. As social media platforms play an increasingly influential role in shaping healthcare narratives, understanding the nuances of dental discourse on YouTube becomes crucial for both practitioners and the public. This exploration encompasses a spectrum of topics, ranging from the chemical intricacies of bleaching agents to the societal dynamics influencing viewer preferences. By unraveling the complexities of online dental information, this study seeks to contribute valuable insights to the evolving land-scape of oral health education in the digital age. Future research should adopt a multi-platform approach and explore the dynamic interaction between content creators and viewers for a more holistic comprehension of online dental information.

Preprint ARTICLE | doi:10.20944/preprints202310.1671.v1

Psicolinguistic Modeling of Spanish Political Parties from Social Media

Arturo Montejo-Ráez, Manuel Carlos Díaz-Galiano, Luis Navarro-Ardoy, Manuel Tomás González-Fernández

Subject: Computer Science And Mathematics, Artificial Intelligence And Machine Learning Keywords: Social Computing; Topic Modeling; Psicolinguistics; Natural Language; NLP

Online: 25 October 2023 (16:18:11 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202306.2163.v1

The Impact of Digital Media on Event-Related Perception

Stefano Calabrese

Subject: Arts And Humanities, Literature And Literary Theory Keywords: Event; transmedia storytelling; action; expanded text

Online: 30 June 2023 (03:08:15 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201807.0377.v1

Analytical Approaches to Model Light Transmission through Turbid Media

Leonid G. Sokoletsky, Vladimir P. Budak

Subject: Physical Sciences, Optics And Photonics Keywords: spherical transmittance; plane transmittance; diffuse attenuation coefficient; spherical albedo; plane albedo; diffusion exponent; average cosine of the light field; IPOL; MDOM; SORD

Online: 20 July 2018 (05:54:38 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202402.0601.v1

Influence of Social Media Usage, Academic Performance and Working Memory among Undergraduate Students

Nnaemeka Emmanuel Mgbedo, Marbyen Elma Musa, Pragati Chhikara, Rupam Chaturvedi, Nikita Vyas, Nana Zavradashvili

Subject: Medicine And Pharmacology, Psychiatry And Mental Health Keywords: social media; academic performance; working memory; students; addiction

Online: 9 February 2024 (15:59:48 CET)

Show abstract| Download PDF| Supplementary Files| Share

Preprint ARTICLE | doi:10.20944/preprints202309.0034.v1

Investigation of Optical Cavity Dynamics with Raman and Yb-Doped Gain Media Integration

Efrain Mejia-Beltran, Oscar J. Ballesteros-Llanos

Subject: Physical Sciences, Optics And Photonics Keywords: Raman Fiber Lasers; Ytterbium-doped Fiber Lasers; Stimulated Raman Scattering; Amplified Spontaneous emission

Online: 1 September 2023 (09:42:49 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202210.0010.v2

Spin-Orbital Coupling and Conservation Laws in Electromagnetic Waves Propagating through Chiral Media

Hyoung-In Lee

Subject: Physical Sciences, Optics And Photonics Keywords: electromagnetic wave; medium chirality; bilinear parameter; conservation law; spin-orbit coupling; plane wave; inconsistency; wave-propagation problem; light-matter interaction; circular vector; bi-characteristics

Online: 16 December 2022 (08:12:28 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202104.0228.v1

Holistic Requirements Analysis For Specifying New Systems For 3D Media Production and Promotion

Christos Mouzakis, Dimitrios Ververidis, Luis Miguel Girao, Nicolas Patz, Spiros Nikolopoulos, Ioannis Kompatsiaris

Subject: Social Sciences, Anthropology Keywords: Requirements Engineering; Authoring Tools; 3D content; IEEE 830 standard; Social Media

Online: 8 April 2021 (10:16:52 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202011.0570.v1

Traditional Folk Media for Environmental Communication and Preservation in Guna Community, Amhara, Ethiopia

Destaw Bayable

Subject: Social Sciences, Anthropology Keywords: Environmental Communication; Environmental preservation; Folk media; Guna community

Online: 23 November 2020 (09:20:58 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202009.0637.v1

Comparison of Three Skin Sampling Methods and Two Media for Culturing Malassezia Yeast

Abdourahim Abdillah, Saber Khelaifia, Didier Raoult, Fadi Bittar, Stéphane Ranque

Subject: Biology And Life Sciences, Biochemistry And Molecular Biology Keywords: Malassezia; isolation; culture media; skin sampling

Online: 26 September 2020 (13:44:40 CEST)

Show abstract| Download PDF| Supplementary Files| Share

Preprint ARTICLE | doi:10.20944/preprints201908.0226.v1

Preprint: Crowdsourcing and Analysing Wildlife Tourism Data from Photographs Shared on Social Media

Obelia Walker, Greg D. Simpson, Albert C. K. Teo, David Newsome

Subject: Environmental And Earth Sciences, Environmental Science Keywords: crowdsourcing; citizen science; ecotourism; Facebook; Flickr; photo-elicitation; Instagram; photovoice; social media; social networking sites; Twitter; wildlife conservation

Online: 21 August 2019 (10:34:58 CEST)

Show abstract| Download PDF| Share

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)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202312.0500.v2

A Modification to the Remotely Sensed Active Layer Thickness (ReSALT) Algorithm to have Self-Consistency

Jatin Mathur

Subject: Environmental And Earth Sciences, Remote Sensing Keywords: synthetic aperture radar; interferometric synthetic aperture radar; permafrost thaw; climate change

Online: 18 January 2024 (08:05:37 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202312.0498.v1

Chemical Vapor Deposited 2D MoN Nanosheets as Stable and Uniform Surface Enhanced Raman Scattering Substrate with Thickness Dependent Sensitivity

Hongrong Wu, Maolin Tang, Pinsen Tong, Yang Hang, Junhua Zhao

Subject: Chemistry And Materials Science, Nanotechnology Keywords: two-dimensional materials; surface enhanced Raman scattering; MoN nanosheets; thickness dependent sensitivity; stability

Online: 7 December 2023 (08:38:15 CET)

Show abstract| Download PDF| Supplementary Files| Share

Preprint ARTICLE | doi:10.20944/preprints202112.0178.v1

Chitosan/alginate Hydrogel Dressing Loaded FGF/VE-cadherin: To Accelerate Full-thickness Skin Regeneration and More Normal Skin Repairs

Lai Wei, Jianying Tan, Li Li, Sainan Liu, Huanran Wang, Junying Chen, Yajun Weng, Tao Liu

Subject: Chemistry And Materials Science, Biomaterials Keywords: hydrogel dressing; full-thickness skin regeneration; 3D cell culture; VE-cadherin; FGF

Online: 10 December 2021 (13:10:47 CET)

Show abstract| Download PDF| Share

Working Paper ARTICLE

Kinetics Analysis of Copper Complex Photoredox Catalyst: Roles of Oxygen, Thickness, and Optimal Concentration for Radical/Cationic Hybrid Photopolymerization

Jui-Teng Lin, jacques Lalevee, Da-Chun Cheng

Subject: Chemistry And Materials Science, Analytical Chemistry Keywords: polymerization kinetics; photoinitiator; free radical, cationic polymerization, copper complex, photoredox catalyst.

Online: 25 May 2021 (09:50:35 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202007.0196.v1

Brain Oscillatory Activity during Tactile Stimulation Correlates with Cortical Thickness of Intact Areas and Predicts Outcome in Comatose Patients

Galina Portnova, Irina Girzhova, Daria Filatova, Vitaliy Podlepich, Alina Tetereva, Olga Martynova

Subject: Medicine And Pharmacology, Neuroscience And Neurology Keywords: coma; unconsiousness; EEG; MRI; Freesurfer; TBI

Online: 9 July 2020 (12:58:28 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201910.0274.v1

A Study on Vertical Upward Welding of Dissimilar Material and Thickness of Thin Plates Using Novel TIG Welding Process

Ngo Huu Manh, Nguyen Van Anh, Murata Akihisa, Hideno Terasaki

Subject: Engineering, Mechanical Engineering Keywords: welding thin sheets; constricted nozzle; TIG welding; EBSD; blowhole; heat input

Online: 24 October 2019 (05:55:00 CEST)

Show abstract| Download PDF| Share

Preprint REVIEW | doi:10.20944/preprints202312.0465.v1

The Thirty-Fifth Anniversary of K+ Channels in O2 Sensing: What We Know and What We Don’t Know.

Asuncion Rocher, Philip Irving Aaronson

Subject: Biology And Life Sciences, Anatomy And Physiology Keywords: O2 sensing; carotid body; hypoxia; hypoxic pulmonary vasoconstriction; BKCa channel; KV channel; TASK channel; mitochondria; reactive oxygen species; redox

Online: 7 December 2023 (07:11:34 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202310.1605.v1

Exploring an Interdisciplinary Curriculum in Product and Media Design Education: Knowledge Innovation and Competency Development

Yi-Fang Kao, Hung-Cheng Chen, Jung-Hua Lo

Subject: Social Sciences, Education Keywords: interdisciplinary curriculum; scaffolding theory; knowledge innovation; transformational competencies; triple-helix knowledge economy

Online: 25 October 2023 (09:25:20 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202312.1980.v1

Cornelian Cherry (Cornus mas L.) Fruit Extract Lowers SREBP-1c and C/EBPα in Liver and Alters Various PPAR-α, PPAR-γ, LXR-α Target Genes in Cholesterol-Rich Diet Rabbit Model

Maciej Danielewski, Andrzej Rapak, Angelika Kruszyńska, Małgorzata Małodobra-Mazur, Paweł Oleszkiewicz, Stanislaw Dzimira, Alicja Zofia Kucharska, Wojciech Słupski, Agnieszka Matuszewska, Beata Nowak, Adam Szeląg, Narcyz Piórecki, Urszula Zaleska-Dorobisz, Tomasz Sozański

Subject: Medicine And Pharmacology, Dietetics And Nutrition Keywords: cornelian cherry; Cornus mas L.; iridoid; anthocyanin; transcription factor; ATP-binding cassette transporter; adipokine; common carotid artery; atherosclerosis; cardiovascular disease

Online: 26 December 2023 (11:27:47 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202312.0196.v1

Influence of the Thermal Insulation Thickness of Walls on the Heating Demand of an Existing Dwelling

Sebastian George Maxineasa, Dorina Nicolina Isopescu, Ioana Roxana Baciu, Alexandra Cojocaru, Ligia Mihaela Moga

Subject: Engineering, Civil Engineering Keywords: natural environment; construction sector; sustainable development; energy performances; existing buildings; heating demand

Online: 5 December 2023 (07:41:23 CET)

Show abstract| Download PDF| Share

Preprint REVIEW | doi:10.20944/preprints202310.0482.v1

Understanding the Impact of Left Atrial Epicardial Adipose Tissue Thickness on Atrial Fibrillation: A Literature Review

Behzad Fahimi, Somayeh Beikmohammadi

Subject: Medicine And Pharmacology, Cardiac And Cardiovascular Systems Keywords: epicardial adipose tissue; atrial fibrillation; inflammation; cardiac arrhythmia; left atrium

Online: 10 October 2023 (02:59:16 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201910.0013.v1

Tracking Temporal Development of Optical Thickness of Hydrogen Alpha Spectral Radiation in a Laser Induced Plasma

David M. Surmick, Christian G. Parigger

Subject: Physical Sciences, Atomic And Molecular Physics Keywords: atomic spectroscopy; radiation transfer; hydrogen; laser-induced breakdown spectroscopy; stark broadening

Online: 2 October 2019 (03:42:34 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201907.0249.v1

The Impacts of Shell Thickness of Thermally Expandable Microspheres on the Application of Vehicle Underbody Coating

Jin-Wook Park, Sang-Jin Lee, Sang-Hoon Ji, Hae-Na You, Ji-Hoo Kim, Kwang-Ji Ryu

Subject: Chemistry And Materials Science, Chemical Engineering Keywords: vehicle; shell thickness, coating; focused ion beam; containing cross-linking agents

Online: 23 July 2019 (07:36:14 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201906.0284.v1

Effects of Shell Thickness of Thermally Expandable Microspheres on the Application of Underbody Coating for Vehicles

Jin-Wook Park, Sang-Jin Lee, Sang-Hoon Ji, Hae-Na You, Ji-Hoo Kim, Kwang-Ji Ryu

Subject: Chemistry And Materials Science, Chemical Engineering Keywords: TEM; underbody coating; UBC; FIB; thermally expandable microspheres

Online: 27 June 2019 (07:52:13 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202401.0928.v1

Silver-Assisted Hydrogen Evolution from Aluminum Oxidation in Saline Media

Olesya A. Buryakovskaya, Konstantin I. Maslakov, Nikita O. Borshchev, Grayr N. Ambaryan, Aleksey V. Butyrin, Mikhail S. Vlaskin

Subject: Chemistry And Materials Science, Metals, Alloys And Metallurgy Keywords: aluminum-silver powder; gallium; lithium chloride; high energy ball milling; aqueous chlorine solution; hydrogen generation.

Online: 11 January 2024 (13:17:40 CET)

Show abstract| Download PDF| Share

Preprint REVIEW | doi:10.20944/preprints202302.0364.v1

Post or Perish? Social Media Strategies for Disseminating Orthopedic Research

Evan Buettmann, Carolyn Chlebek, Carly Lockard, Sade Clayton, Karl Lewis, Kelsey Collins

Subject: Social Sciences, Media Studies Keywords: Twitter; Social Media; Altmetrics; Citations; Orthopedic Research Society; Publication

Online: 22 February 2023 (01:34:43 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202204.0180.v1

Treatment of Septic Tank Discharge Using Crushed Glass Filter Media

Quang Truong, Mohammad Ramezanianpour, Marc Jensen, Issei Yuki

Subject: Engineering, Civil Engineering Keywords: Crushed glass; Carbon emission; Septic discharge; Total Nitrogen

Online: 19 April 2022 (10:30:59 CEST)

Show abstract| Download PDF| Share

The on-site wastewater treatment system (OWTS) with a sand trench is an economical option for residents in rural areas or the countryside where a centralised sewer system is inaccessible. 2A sand achieves improved filtration, microbial activity and consistent long term performance when compared to gravel or scoria based trench systems. However, it is expensive and only readily available in a few areas across New Zealand. Additionally, it has a reputation for premature blockage when overloaded or compacted. The aim of this study is not only to critically evaluate the performance of Crushed Glass (CG) with respect to 2A sand, but also to investigate different loading rates for CG when treating primary treated effluent from a septic tank. A test rig was designed and constructed to simulate the real environment of the sand column in a discharge control trench. The treatment efficiency of three filters was recorded and compared in this study. Overall, the CG loaded at 25mm/day (CG₂₅) and50mm/day (CG₅₀) provided an average of 13% and 6% more Total Nitrogen (TN) reduction than the sand filter, respectively. The removal rates for the TN were up to 69.5%. The CG₅₀filter performed similarly at 50mm/day as the 2A sand filter in terms of Total Suspended Solids (TSS) and Biochemical Oxygen Demand (BOD)₅ removal of more than 94%. The CG₂₅ removal rates for TSS and BOD₅ at the start of the trial (likely due to residual liquid contamination from the bottles when crushed) improved over the sampling period and ultimately achieved similar results of 92% and 91.3% to the filters loaded at 50mm/day. Lifecycle cost analyses and carbon balances were completed for the two media. It highlighted that the current price of CG is only half of 2A sand, yet it produces significantly less CO₂ emissions than 2A sand. A 3-bedroom dwelling could save up to $500 and reduce 200kg of CO₂ released to the environment annually when 2A sand is substituted for CG. Based on the findings of this paper, it is likely that the reduced installation cost, lessened environmental impact and theoretical availability will lead to CG systems becoming more common in New Zealand and abroad.

Preprint REVIEW | doi:10.20944/preprints202112.0456.v1

Humic Acids Aggregates as Microheterogeneus Reaction Media: Alkaline Hydrolysis Reactions

Antonio Cid, L. García-Río, Juan C. Mejuto, A. Saavedra

Subject: Chemistry And Materials Science, Physical Chemistry Keywords: humic acids; alkaline hydrolysis; pseudophase model; micelles

Online: 28 December 2021 (16:15:10 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202011.0369.v2

Understanding the Strategies of Creating Fake News in Social Media

Dinusha Vatsalan, Nalin A.G. Arachchilage

Subject: Social Sciences, Media Studies Keywords: usable security; fake news; emotions; sentiment analysis; machine learning

Online: 27 November 2020 (16:43:48 CET)

Show abstract| Download PDF| Share

Preprint REVIEW | doi:10.20944/preprints202010.0631.v1

Zeolite-microfragmenting Media: A Potential Strategy to Accelerate Coral Growth

Izzul Islam

Subject: Biology And Life Sciences, Anatomy And Physiology Keywords: Coral Growth; Microfragmentation; Transplantation; Zeolite

Online: 30 October 2020 (09:01:07 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201807.0345.v1

Mode Profile Shaping in Wire Media: Towards an Experimental Verification

Taylor Boyd, Jonathan Gratus, Paul Kinsler, Rosa Letizia, Rebecca Seviour

Subject: Physical Sciences, Optics And Photonics Keywords: spatial dispersion; field profile; metamaterials; photonics; RF engineering

Online: 19 July 2018 (05:23:37 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201805.0291.v1

Impact of Mechanical Degradation on Polymer Injectivity in Porous Media

Badar Al-Shakry, Tormod Skauge, Behruz Shaker Shiran, Arne Skauge

Subject: Chemistry And Materials Science, Physical Chemistry Keywords: HPAM polymer; rheology; viscosity; injectivity; mechanical degradation; polymer flooding

Online: 22 May 2018 (06:21:35 CEST)

Show abstract| Download PDF| Share

Preprint REVIEW | doi:10.20944/preprints202311.1388.v1

A Review of Distribution and Profiles of HBCD in Different Environmental Media of China

Jing Lin Deng, Wen bin Liu, Li rong Gao, Tian qi Jia, Yun chen He, Tian ao Mao, Javid Hussain

Subject: Environmental And Earth Sciences, Pollution Keywords: HBCD; occurrence and distribution; environmental media

Online: 22 November 2023 (06:30:08 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202203.0016.v1

University Libraries of Pakistan, Application of Social Media to Market Library Sources and Services

Anwar Muhammad, Tang Zhewei

Subject: Social Sciences, Library And Information Sciences Keywords: University libraries; marketing; library sources and services; Social media; Facebook; Whatsapp

Online: 1 March 2022 (11:05:33 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202107.0569.v1

The Complex-Order Fractional Laplacian: Stable Operators, Spectral Methods, and Applications to Heterogeneous Media

Alfonso Bueno-Orovio, Kevin Burrage

Subject: Computer Science And Mathematics, Algebra And Number Theory Keywords: Fractional calculus; fractional Laplacian; anomalous diffusion; spectral methods; reaction-diffusion equations; nonlocality; spatial heterogeneity

Online: 26 July 2021 (11:16:34 CEST)

Show abstract| Download PDF| Supplementary Files| Share

Preprint ARTICLE | doi:10.20944/preprints202105.0477.v1

Hold On! Your Emotion and Behaviour when Falling for Fake News in Social Media

Dinusha Vatsalan, Nalin Asanka Gamagedara Arachchilage

Subject: Computer Science And Mathematics, Algebra And Number Theory Keywords: emotions; sentiment analysis; machine learning; fake news; disinformation

Online: 20 May 2021 (10:29:52 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201904.0036.v1

Characterising Recycled Organic and Mineral Materials for Use as Filter Media in Biofiltration Systems

Steven Lucas, Charles CC Lee, Eric Love

Subject: Environmental And Earth Sciences, Environmental Science Keywords: compost, nutrient leaching; pollutant removal; stormwater quality, system modeling

Online: 2 April 2019 (15:35:29 CEST)

Show abstract| Download PDF| Supplementary Files| Share

Preprint REVIEW | doi:10.20944/preprints201805.0478.v1

Media Health Literacy, eHealth Literacy, and the Role of the Social Environment in Context

Diane Levin-Zamir, Isabella Bertschi

Subject: Social Sciences, Behavior Sciences Keywords: health literacy; media health literacy; ehealth literacy; social environment; health apps; social support; digital health; empowerment

Online: 31 May 2018 (11:45:44 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202210.0160.v1

Effect of Layer Thickness and Heat Treatment on Microstructure and Mechanical Properties of Alloy 625 Manufactured by Electron Beam Powder Bed Fusion

Julio Cesar Diaz, Kurtis I. Watanabe, Aldo Rubio, Alex De La Cruz, Dana Godinez, Lawrence E. Murr, Ryan B. Wicker, Edel Arrieta, Francisco Medina

Subject: Chemistry And Materials Science, Metals, Alloys And Metallurgy Keywords: electron beam powder bed fusion (EBPBF); Inconel 625; microstructure and mechanical properties; layer-thickness effects; heat treatment; duplex grain structure; grain boundary carbides

Online: 12 October 2022 (02:09:35 CEST)

Show abstract| Download PDF| Share

This research program investigated the effects of layer thickness (50 and 100 microns) on the microstructure and mechanical properties of electron beam powder bed fusion (EBPBF) additive manufacturing of Inconel 625 alloy. The as-built 50 and 100 micron layer thickness components were also heat treated at temperatures above 1100 oC, which produced a recrystallized grain structure containing annealing twins in the 50 micron layer thickness components, and a duplex grain structure consisting of islands of very small equiaxed grains dispersed in a recrystallized, large-grain structure containing annealing twins. The heat treated component microstructures and mechanical properties were compared with the as-built components in both the build direction (vertical) and perpendicular (horizontal) to the build direction. Vickers microindentation hardness (HV) values for the vertical and horizontal geometries averaged 227 and 220 for the as-built 50 and 100 micron layer components, and 185 and 282 for the corresponding heat treated components. The yield stress values were 387 MPa and 365 MPa for the as-built layer horizontal and vertical 50 micron layer geometries, and 330 MPa and 340 MPa for the as-built 100 micron layer components. For the heat treated 50 micron components, the yield stress values were 340 and 321 MPa for the horizontal and vertical geometries, and 581 and 489 MPa for the 100 micron layer components, respectively. The elongation for the 100 micron layer as-built horizontal components was 28% in contrast to 65% for the corresponding 100 micron heat treated layer components, an increase of 132% for the duplex grain structure. However, the coarse grains containing annealing twins and the equiaxed small grain islands in the duplex structure for the heat treated components contained continuous carbides in the grain boundaries, and this may indicate sensitization and a reduction in corrosion resistance. These findings point to the potential mechanical property advantage for heat treatment of Inconel 625 alloy 100 micron layer thickness components fabricated by EBPBF.

Preprint ARTICLE | doi:10.20944/preprints202002.0457.v1

Influence of Cross Section Thickness and Aspect Ratio on Deformation during Diffusion Bonding and Impact of Metal Diffusion and Evaporation on Temperature Measurement Accuracy

Thomas Gietzelt, Volker Toth, Manfred Kraut, Uta Gerhards, Robin Duerrschnabel

Subject: Engineering, Industrial And Manufacturing Engineering Keywords: diffusion welding; diffusion bonding; cross section width; aspect ratio; material thickness; thermocouple aging

Online: 29 February 2020 (09:01:14 CET)

Show abstract| Download PDF| Share

Diffusion bonding is often used on pre-machined parts to generate internal cavities, e.g. for cooling injection molding tools close to the mold cavity. Only then, the workpieces are finished to their final dimensions. In the case of micro-process devices, however, it is essential to precisely control the deformation, as otherwise uncontrollable pressure losses will occur with channel cross-sections in the sub-millimeter range. Post-processing is not possible. The most important process parameters for diffusion bonding are temperature, dwell time and contact pressure, with the bonding temperature and contact pressure acting in opposite directions and showing a strong non-linear dependence on deformation. In addition, the deformation is influenced by a number of other factors such as the absolute size of the cross-section and the aspect ratio of the parts, the dimensions and distribution of the internal cross sections and the overall percentage of the cross-section to be bonded. In micro process engineering, small material cross-sections in the range of the materials microstructure can facilitate additional deformation mechanisms such as grain boundary sliding, which are not relevant at all for larger structures. For parts consisting of multiple layers, tolerances in thickness and roughness of multiple surfaces must be levelled, contributing to the percentaged deformation. This makes it difficult, especially in micro process engineering and in single or small series production, to determine suitable joining parameters in advance, which on the one hand do not cause unforeseen large deformations, but on the other hand reliably produce highly vacuum-tight components. Hence, a definition of a fixed percentaged deformation does not work for all kinds of components. This makes it difficult to specify parameters for surely obtain high-vacuum tight parts. For successful diffusion bonding, atoms must diffuse over the bonding planes, forming a monolithic part in which the original layers are no longer visible. Only then, mechanical properties identical to those of the base material, which has been subjected to identical heat treatment, can be achieved. In this paper, the impacts of different material cross section widths as well as of the aspect ratio on deformation were investigated. By accident, it was found that also accuracy of the temperature measurement may have a serious impact in terms of deformation.

Preprint ARTICLE | doi:10.20944/preprints201802.0165.v1

The Importance and Effectiveness of Carotid Endarterectomy in Ischaemic Stroke or TIA with Significant Carotid Stenosis

Muhammad Shohel Almamun, Mobashshereen Khan

Subject: Medicine And Pharmacology, Neuroscience And Neurology Keywords: Cerebral autosomal dominant arteriopathy with subcortical infarcts and leuco encephalopathy (CADASIL); Carotid Endarterectomy (CEA); Modified Rankin Scale (MRS); Computed Tomography(CT); Tissue plasminogen activator (tPA); Diffusion weighted Imaging (DWI); Recognition of Stroke in the Emergency Room (ROSIER) scale; Magnetic resonance Imaging (MRI); Internal Carotid Artery (ICA)

Online: 26 February 2018 (11:46:47 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202311.0015.v1

Impact of Separator Thickness on Relationship between Temperature Distribution and Mass & Current Density Distribution in Single Cell of HT-PEFC

Akira Nishimura, Daiki Mishima, Syogo Ito, Tsubasa Konbu, Eric Hu

Subject: Engineering, Energy And Fuel Technology Keywords: HT-PEFC; numerical simulation; separator thickness; coupling phenomena

Online: 1 November 2023 (08:28:49 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202404.1613.v1

The Impact of Migraine on the Thickness of the Inner Plexiform Layer Quantifying by Optical Coherence Tomography

Anamarija Soldo Koruga, Tatjana Pekmezović, Nenad Koruga, Alen Rončević, Slaven Balog, Antonio Kokot, Davor Jančuljak, Silva Butković Soldo

Subject: Neuroscience And Neurology, Medicine And Pharmacology Keywords: case-control studies, migraine with aura, migraine without aura, optical coherence tomography, retina

Online: 24 April 2024 (17:32:35 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202401.1393.v1

Atomic-Scale Structural Properties in NiCo₂O₄/CuFe₂O₄ Bilayer Heterostructures on (001)-MgAl₂O₄ Substrate Regulated by Film Thickness

Kun Liu, Ruyi Zhang, Jiankang Li, Songyou Zhang

Subject: Chemistry And Materials Science, Nanotechnology Keywords: bilayer heterostructure; film thickness; microstructural defects; electron microscopy

Online: 18 January 2024 (13:56:22 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202401.1020.v1

Analysis of Yield Threshold in a Functionally Graded Variable Thickness Rotating Disc Using the Tresca Yield Criterion

sina khoonbani, Hassan Ramezanian

Subject: Engineering, Mechanical Engineering Keywords: Yield Threshold; Variable Thickness; Rotating Disk; Tresca Criterion; Yield Stress; Plastic Flow

Online: 12 January 2024 (12:41:17 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202012.0676.v1

The Mathematical Relationship Among Normal Patellar Dimensions, to Find the Pre-Diseased Patellar Thickness in Different Populations

Mahdie Kerdari, Shima Rastegar, Yasmeen Mustafa, Mohammadreza Abbassian, Armin Aalami Harandi, Mary M. Staehle, Robert Hube, Hamid RS Hosseinzadeh

Subject: Medicine And Pharmacology, Immunology And Allergy Keywords: Patella; dimension; ethnic anatomy; patellar thickness; ridge-offset ratio

Online: 28 December 2020 (10:10:21 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202403.1138.v1

Impact of Social Media Marketing Activities and ESG Green Brand Involvement on Green Product Repurchase

Tung-Lai Hu, Chuang-Min Chao, Chia-Hung Lin

Subject: Business, Economics And Management, Marketing Keywords: Social media marketing activities; green values; environmental concerns; brand image; brand involvement; repurchase intention

Online: 19 March 2024 (14:32:31 CET)

Show abstract| Download PDF| Share

Preprint REVIEW | doi:10.20944/preprints202403.0842.v1

State-of-the-art on Fe Precipitation in Porous Media: Hydrogeochemical Processes and Evolving Parameters

Wenran Cao, Guanxi Yan, Harald Hofmann, Alexander Scheuermann

Subject: Engineering, Civil Engineering Keywords: groundwater-seawater mixing; oxidative precipitation of Fe(II); permeability/tortuosity–porosity relationship; specific surface area; reactive transport modeling; non-invasive imaging

Online: 14 March 2024 (09:57:50 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202401.0740.v2

Can Social Media-Driven Trust and Customer positive Emotions with a Car Dealership Increase Brand Love?

Mohamad Hashem, Carla Ruiz Mafé, Rafael Currás Pérez

Subject: Business, Economics And Management, Marketing Keywords: brand love; emotions; perceived service quality; automobiles

Online: 12 February 2024 (11:33:35 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202305.0153.v1

Synthesis, Purity Check, Hydrolysis and Removal of O-Chlorobenzyliden Malononitrile (CBM) By Biological Selective Media

Catalina Gabriela Gheorghe, Viorel Gheorghe, Daniela Roxana Popovici, Sonia Mihai, Catalina Calin, Elena Emilia Sirbu, Rami Doukeh, Nicoleta Grigoriu, Constantin Nicolae Toader, Cristina Epure

Subject: Environmental And Earth Sciences, Environmental Science Keywords: CS gas; O-Chlorobenzylidene malononitrile (CBM); ecotoxicity; Chlorella; FTIR spectroscopy; GC-MS

Online: 3 May 2023 (12:55:08 CEST)

Show abstract| Download PDF| Share

The military taxonomy of class indices for chemical and biological warfare agents considers halogenated tear agents (CS) to be incapacitating causing local pain and discomfort with associated reflexe. The removal yield of the organic substances present in the water depends on the environmental conditions, on the chemical composition of the water and on the chemical substance dissolved in the water, which constitutes the substrate of the metabolic activities of the microorganisms that use these substances in the biochemical reactions of the cellular enzyme complexes. The two -CN groups in the malonic nitrile molecule are strongly electron-attracting and activate the CH2 group to which they are linked, and because of this, malononitrile has the role of a methylene component in condensation reactions with aldehydes or ketones. The results obtained after analyzing the degree of hydrolysis in the samples that contained the biological suspension indicated that no CBM metabolites were detected in any biological sample, regardless of the test concentration, analyzed 24 h after incubation. In the parallel samples, the aqueous solutions of CBM without biological treatment had metabolites in the samples., at 30 minutes the degree of hydrolysis is 0.21%, at 60 minutes, the degree of hydrolysis is 5.42%, after 90 minutes, the degree of hydrolysis is 6.19%, and after 24 hours. the degree of hydrolysis is 23.41%. Chemical substances in contact with microorganisms are used by them in the biochemical processes in which they are involved, the retention time and biodegradation capacity have led to an increased effect of the metabolism of toxic substances, in metabolic reactions, organic substances are the source of carbon and energy for biochemical processes. The tests performed indicate that the suspension of Chlorella sp. consumed the entire amount of CBM and metabolites from the analyzed samples The tests prove that the biological material can be used for the decontamination of the affected areas.

Preprint ARTICLE | doi:10.20944/preprints202207.0159.v1

Marchenko Green's Function Retrieval in Layered Elastic Media from Two-Sided Reflection and Transmission Data

Joost Van Der Neut, Joeri Brackenhoff, Giovanni Meles, Evert Slob, Kees Wapenaar

Subject: Physical Sciences, Applied Physics Keywords: Marchenko equation; Green's function retrieval; elastodynamic wave propagation

Online: 11 July 2022 (11:19:01 CEST)

Show abstract| Download PDF| Share

Preprint SHORT NOTE | doi:10.20944/preprints202306.1320.v1

Enhancing Positivity in Mass Media for Nation Building: A Critical Review

Bharat Dhiman

Subject: Public Health And Healthcare, Public Health And Health Services Keywords: mass media; positivity; nation building; public opinion; societal attitudes

Online: 19 June 2023 (10:50:50 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202305.2183.v1

The Power of Immersive Media: Enhancing Empathy through Virtual Reality Experiences

Dr. Bharat Dhiman

Subject: Computer Science And Mathematics, Artificial Intelligence And Machine Learning Keywords: immersive media; virtual reality; empathy; empathy-building simulations

Online: 31 May 2023 (07:32:34 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202305.0266.v1

Misinformation about the COVID-19 Vaccine in the Online Catholic Media

Verónica Israel-Turim, Valentina Laferrara, Ana Regina Rego, Josep Lluís Micó-Sanz

Subject: Social Sciences, Media Studies Keywords: misinformation; catholic media; COVID-19 vaccine; fake news; infodemic; health communication; vaccination; news media; digital media

Online: 4 May 2023 (12:57:51 CEST)

Show abstract| Download PDF| Share

Preprint ESSAY | doi:10.20944/preprints202209.0259.v1

Social Media Platforms: Trading with Prediction Error Minimization for Your Attention

Alejancra Ciria, Mahault Albarracin, Mark Miller, Bruno Lara

Subject: Social Sciences, Psychology Keywords: active inference; digital affordances; patterns of attention; prediction error minimization; prediction error dynamics

Online: 19 September 2022 (04:49:39 CEST)

Show abstract| Download PDF| Share

Culture exploits the acquisition of meaningful content by crafting regimes of shared attention, determining what is relevant, valuable, and salient. Culture changes the field of relevant social affordances worthy of being acted upon in a context-sensitive manner. When relevant affordances are highly weighted, their attentional capture and their salience increase the probability of them being enacted due to the associated expectation for minimizing prediction error. This process is known as active inference. In the digital era, individuals need to infer the action-related attributes of digital cues, here characterized as digital affordances. The digital affordances of digital social platforms are of particular interest here. Digital social affordances are defined as online possibilities of social interactions. By their own nature, these are salient because they are related to social interactions and relevant social cues. However, the problem of digital social platforms is that they are not equivalent to situated social interactions because their structure is built, mediated, and defined by third-parties with diverse interests. The third-parties behind the digital social platforms are using the same mechanism exploited by culture to manipulate the shared patterns of attention. Moreover, digital social platforms are deliberately designed to be hyper-stimulating, making digital social affordances highly rewarding and increasingly salient. This appropriation, for economic purposes, is an issue of great importance, especially as the COVID-19 pandemic brought deep global changes, pushing societies to an online digital way of life. Here, we examined different types of digital social affordances under an active inference view, placing them into two categories, those for self-identity formation, and those for belief-updating. This paper aims to analyze digital social affordances in light of the prediction error dynamics they might elicit to their users. Although each of the analyzed digital social affordances allows different epistemic and instrumental digital actions, they all share the characteristic of having an "easy" and a fast expected rate of error reduction. Here, we aim to provide a new hypothesis about how the design behind digital social affordances is built on our natural attractiveness to minimize prediction error and the resulting positive embodied feelings when doing so. Finally, it is suggested that because digital social affordances are becoming highly weighted in the field of affordances, this might be putting at risk our context-sensitive grip on a rich, dynamic and varied field of relevant affordances.

Preprint ARTICLE | doi:10.20944/preprints202206.0027.v1

Using Social Media to Build the Loyalty Loop in Omnichannel Retail

David Cattrall, Simone Castello

Subject: Business, Economics And Management, Marketing Keywords: omnichannel CRM; social CRM; social media marketing; retail

Online: 2 June 2022 (05:09:15 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202110.0380.v1

Mapping Maternal Health in the New Media Environment: A Scientometric Analysis

Yinghua Xie, Dong Lang, Chengxu Long, Shangfeng Tang

Subject: Computer Science And Mathematics, Analysis Keywords: maternal health; new media; bibliometric analysis; cited reference analysis; structural variation analysis; hot spots

Online: 26 October 2021 (12:17:49 CEST)

Show abstract| Download PDF| Share

Background: The new media provides a convenient digital platform to access, use and exchange health information. As a special group of health care, maternal is still of international concern due to their high mortality rate. Improving maternal health as a Millennium Development Goal of the United Nations is an important quest for the health care system. Scientific research provides advice on how to improve maternal health through stringent reasoning and accurate data. However, the dramatic increase of publications, the diversity of themes, and the dispersion of researchers may reduce efficiency. Objective: This study aims to analyze the research progress on maternal health under the global new media environment, exploring the current research hotspots and research frontiers. Methods: A scientometric analysis was carried out by CiteSpace5.7.R1, searching in the core database of Web of Science for articles published in English from 1998 to 2021, and combined topic words such as new media, maternal, and health. In total, 3312 articles have been retrieved, of which 2270 studies have been included for further analysis. Top countries and institutions, potentially high-impact literature, research frontiers, and hotspots were analyzed in this study. Results: The number of publications grew rapidly after 2008, from 29 publications sharply increasing to 472 publications by 2020. Research centers concentrated in Latin America, such as the University of Toronto, the University of California. The work of Larsson M, Lagan BM, Tiedje L, and Helle C had a high potential impact. Most of the research subjects were maternal and newborn babies, and the research frontiers focused on health education and maternal psychological problems. Maternal mental health, maternal and infant nutrition, weight, production technology, and equipment were hotspots. Conclusion: The development of new media has brought a new era for maternal health, characterized by psychological qualities, healthy and reasonable physical conditions, and advanced technology.

Preprint ARTICLE | doi:10.20944/preprints202110.0070.v1

A Multichannel Deep Learning Framework for Cyberbullying Detection on Social Media

Munif Alotaibi, Bandar Alotaibi, Abdul Razaque

Subject: Computer Science And Mathematics, Information Systems Keywords: Online social networks (OSNs); Deep Learning; cyberbullying; Twitter

Online: 5 October 2021 (08:27:41 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202008.0355.v1

Studying Unemployment Effects on Mental Health: Social Media versus Traditional Approach

Samara Ahmed, Adil E. Rajput, Akil Sarirete, Asmaa Aljaberi, Ohoud Alghanem, Abrar Alsheraigi

Subject: Computer Science And Mathematics, Information Systems Keywords: social media; unemployment; crowdsourcing; natural language processing; mental health

Online: 17 August 2020 (08:29:47 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201906.0051.v1

Machine Learning Techniques for Detecting Identifying Linguistic Patterns in News Media

A Samuel Pottinger

Subject: Computer Science And Mathematics, Artificial Intelligence And Machine Learning Keywords: NLP, news media, bias, neural networking, LSTM, information retrieval, filter bubble

Online: 6 June 2019 (13:15:28 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201706.0057.v1

Comparative Study on Antistaphylococcal Activity of Lipopeptides in Various Culture Media

Maciej Jaśkiewicz, Damian Neubauer, Wojciech Kamysz

Subject: Biology And Life Sciences, Immunology And Microbiology Keywords: antimicrobial peptides; lipopeptides; cyclic lipopeptides Staphylococcus aureus; biofilm; culture media

Online: 13 June 2017 (06:09:47 CEST)

Show abstract| Download PDF| Supplementary Files| Share

Preprint ARTICLE | doi:10.20944/preprints202311.0211.v1

Automatic System for the Study the Interaction Between Porous Media and Atmosphere, Clime Change and Environmental Conditions

Roberto Rodríguez-Pacheco

Subject: Environmental And Earth Sciences, Sustainable Science And Technology Keywords: automatic system; porous media; suction; relative humidity; degree of saturation, shrinkage; loss water by evaporation; environmental condition; interaction between porous media and atmosphere; volumetric water content

Online: 3 November 2023 (05:02:18 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202308.0112.v1

Seasonal Changes of Sea Ice Thickness in the Eastern Arctic Ocean Evident from Remotely Sensed and In-Situ Observations in 2013–2015

Andrey V. Pnyushkov

Subject: Environmental And Earth Sciences, Oceanography Keywords: sea ice thickness; Arctic Ocean; Eurasian Basin; ice profiling sonars

Online: 2 August 2023 (08:36:22 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202311.0039.v1

Thickness Optimization of Zn_0.9Mg_0.1O Nanoparticle Electron Transport Layer for High-Performance Top-Emission Quantum Dot Light-Emitting Diodes

Gyeong-Pil Jang, Ji-Hun Yang, Su-Young. Kim, Young-Bin Chae, Hyuk-Doo Choi, Dae-Gyu Moon, Chang-Kyo Kim

Subject: Engineering, Electrical And Electronic Engineering Keywords: quantum dot light-emitting diode; ZnMgO nanoparticles; electro electron injection layer; charge balance; exciton quenching

Online: 1 November 2023 (09:40:36 CET)

Show abstract| Download PDF| Supplementary Files| Share

Preprint ARTICLE | doi:10.20944/preprints202308.0653.v1

CFD Thermo-hydraulic Evaluation of Liquid Hydrogen Storage Tank with Different Insulation Thickness of Small-scale Hydrogen liquefier

Soo-Jin Jeong, Sang-Jin Lee, Seong-Joon Moon

Subject: Engineering, Energy And Fuel Technology Keywords: computational fluid dynamics; liquefied hydrogen storage tank; small-scale hydrogen liquefier; boil-off gas; VOF (Volume of Fluid)

Online: 9 August 2023 (02:54:53 CEST)

Show abstract| Download PDF| Share

Accurate evaluation of thermo-fluid dynamic characteristics in tank are critically important for designing liquid hydrogen tank of small-scale hydrogen liquefier to minimize heat in-leak into the liquid and ullage. Due to the huge cost, most future liquid hydrogen storage tank designs will have to rely on predictive computational models for storage tank pressurization and heat-leak minimization. Thus, reliable on predictive numerical models to aid design process of tank design have been required. Therefore, in this study, in order to improve the storage efficiency of the small-scale hydrogen liquefier, a three-dimensional CFD model that can predict the boil-off rate and the thermo-fluid characteristics due to heat penetration has been developed. The prediction performance and accuracy of the CFD model is validated on the basis of the comparisons between its results and previous experimental data and a good agreement is obtained. To evaluate insulation performance of polyurethane foam according to thickness, the pressure change and thermo-fluid characteristics in a partially liquid hydrogen tank, subject to fixed ambient temperature and wind velocity, has been investigated numerically. Three different insulation thickness were considered to investigate not only interfacial characteristics between liquid and ullage but thermo-fluid dynamics in hydrogen storage tank for various heat-leak situation. The results indicate that as the insulation thickness becomes thinner and more heat penetration exists, natural convection by buoyancy develops stronger, so strong vortices are created near the interfacial zone by upward flow driven by buoyancy. In particular, as the amount of heat in-leak increased, wider and stronger heat accumulation was found in the top dished head area of the ullage area. In addition, it was confirmed that the CFD model developed in this study could well describe the phenomenon in which the temperature of the tank wall and the insulation mat increased at a faster rate due to faster heat transfer from the vapor and interface. In the future, the numerical model developed in this study will be used for optimizing insulation system of storage tank for small-scale hydrogen which is cost-effective and highly efficient.

Preprint ARTICLE | doi:10.20944/preprints202208.0034.v1

High Sensitivity Sers Substrate of A Few Nanometers Single-Layer Silver Thickness Fabricated by DC Magnetron Sputtering Technology

Hsing-Yu Wu, Hung-Chun Lin, Guan-Yi Hung, Chi-Shun Tu, Ting-Yu Liu, Chung-Hung Hong, Guoyu Yu, Jin-Cherng Hsu

Subject: Physical Sciences, Applied Physics Keywords: surface-enhanced Raman scattering (SERS); silver nanoparticle (AgNP); rhodamine 6G (R6G); dc magnetron sputtering; SERS substrate; hotspot; analytical enhancement factor (AEF); limit of detection (LOD); relative standard deviation (RSD)

Online: 2 August 2022 (04:23:31 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202009.0717.v1

Thickness Measurement of Metallic Film Based on a High-Frequency Feature of Triple-Coil Electromagnetic Eddy Current Sensor

Mingyang Lu, Liming Chen, Xiaobai Meng, Ruochen Huang, Anthony Peyton, Wuliang Yin

Subject: Engineering, Automotive Engineering Keywords: Eddy current testing; thickness measurement; non-destructive testing; lift-off; real-time monitoring

Online: 29 September 2020 (15:05:41 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202401.0251.v1

3D Printing and Injection Molding of Biobased Polymer and Biocomposite; and the Effect of Manufacturing Methods and the Printing Layer Thickness on Mechanical Behavior and Water Absorption

Paul Forbid Mukoroh, Fathi Gouda, Mikael Skrifvars, Sunil Kumar Ramamoorthy

Subject: Chemistry And Materials Science, Polymers And Plastics Keywords: 3D printing; injection molding; fused deposition modelling (FDM); poly(lactic acid); layer thickness; mechanical properties; thermal analysis; additive manufacturing

Online: 4 January 2024 (05:38:22 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202306.1017.v1

Comparison of Fungal Genera Isolated from Cucumber Plants and Rhizosphere Soil by Using Various Culture Media

Chong-yang Cheng, Ming-yuan Zhang, Yong-chun Niu, Meng Zhang, Yue-hua Geng, Hui Deng

Subject: Biology And Life Sciences, Agricultural Science And Agronomy Keywords: plant endophytic fungi; rhizospheric soil fungi; isolation; cucumber; cultural media

Online: 14 June 2023 (08:51:38 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202103.0206.v1

Predicting Electrokinetic Coupling and Electrical Conductivity in Fractured Media Using a Bundle of Tortuous Capillary Fractures

Luong Duy Thanh, Damien Jougnot, Phan Van Do, Dang Thi Minh Hue, Tran Thi Chung Thuy, Vu Phi Tuyen

Subject: Environmental And Earth Sciences, Atmospheric Science And Meteorology Keywords: Fractured media; Streaming potential; Electrical conductivity; Fractal

Online: 5 March 2021 (21:51:27 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201908.0134.v1

Corrosion Inhibition Mechanism and Efficiency Differentiation of Dihydroxybenzene Isomers Towards Aluminium Alloy 5754 in Alkaline Media

Jacek Ryl, Mateusz Brodowski, Marcin Kowalski, Wiktoria Lipinska, Pawel Niedzialkowski, Joanna Wysocka

Subject: Chemistry And Materials Science, Electrochemistry Keywords: aluminium alloy; corrosion inhibitor; alkaline environment; impedance analysis; adsorption; dihydroxybenzene

Online: 12 August 2019 (03:58:57 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201807.0009.v1

NiFeO_Xas a Bifunctional Electrocatalyst for Oxygen Reduction (OR) and Evolution (OE) Reaction in Alkaline Media

Alagar Raj Paulraj, Yohannes Kiros, Mats Ahmadi Götelid, Malin B. Johansson

Subject: Chemistry And Materials Science, Electrochemistry Keywords: Bi-functional catalyst; hydrothermal synthesis; OER/ORR; nickel ferrite; Ni FeLDH

Online: 2 July 2018 (10:47:25 CEST)

Show abstract| Download PDF| Supplementary Files| Share

Preprint ARTICLE | doi:10.20944/preprints202107.0173.v1

Fear of Missing Out and Problematic Social Media Use Among University Students in Turkey: Correlates and Further Analysis

Ali Murat Kırık, Ahmet Çetinkaya, Uğur Gündüz

Subject: Social Sciences, Media Studies Keywords: Fear of missing out (FOMO), Parental control, Problematic Social Media Use (PSMU), Social Media Addiction, Social Media Intrusion

Online: 7 July 2021 (10:23:46 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201905.0150.v1

Digital Media Consumption and Youth's Interests in Ecosystem Services, Sustainability and Science as a Means for Disease Prevention

Ibrahim Niankara, Muhammad N. Al-adwan

Subject: Business, Economics And Management, Economics Keywords: Bayesian methods; digital media; ecosystem services; Sustainable development; youth health

Online: 13 May 2019 (10:03:54 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202312.2281.v1

Associations of the Single Bovine Embryo Growth Media Metabolome with Successful Pregnancy

Elina Tsopp, Kalle Kilk, Egon Taalberg, Pille Pärn, Anni Viljaste-Seera, Ants Kavak, Ülle Jaakma

Subject: Biology And Life Sciences, Biology And Biotechnology Keywords: bovine; embryo; metabolomics; in vitro; pregnancy; biomarkers

Online: 29 December 2023 (13:09:08 CET)

Show abstract| Download PDF| Supplementary Files| Share

Preprint ARTICLE | doi:10.20944/preprints202312.0531.v1

Numerical Study of Hydraulic Percolation in Porous Media Using Two Hydraulic Structures

Albert Willian Faria, Stênio de Sousa Venâncio, Adriano Francisco Siqueira, Estaner Claro Romão

Subject: Engineering, Civil Engineering Keywords: Soil hydraulics; FEM; Laplace equation; steady-state regime.

Online: 7 December 2023 (13:56:14 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202308.1649.v1

Media Complexity in the Mirroring of Nigerian Political System: A Historical Appraisal

Blessed Ngonso, Atairet Atairet, Bassey Bassey, Amah Williams, Peter Egielewa

Subject: Social Sciences, Media Studies Keywords: media complexity; political system; historical appraisal

Online: 25 August 2023 (02:47:22 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202307.1753.v1

Dissolution Behaviour of Bark Extractives in Polyurethane Synthesis Media: A Comprehensive Study

Alexandr Arshanitsa, Maris Lauberts, Matiss Pals, Jevgenija Ponomarenko

Subject: Chemistry And Materials Science, Polymers And Plastics Keywords: extraction; bark extractives; biobased polyols; fractionation; analytical pyrolysis; polyurethane

Online: 26 July 2023 (10:17:36 CEST)

Show abstract| Download PDF| Share

The production of polyurethane films from bark-derived polyols requires the complete solubility of all components in the polyurethane synthesis media. In this study, a comprehensive investigation was conducted to achieve the copolymerization of black alder bark water extract-derived polyol with isocyanate for polyurethane film synthesis in THF solution. A fractionation approach using tetrahydrofuran (THF) as a solvent was employed to dissolve the extract, followed by filtration and removal of the solvent. The resulting THF-soluble fraction comprised 62±1% of the dry weight of the alder bark extract, mainly consisting of the xyloside form of the diarylheptanoid compound oregonin, along with oligomeric flavonoids and carbohydrates. The THF-insoluble fraction was the most enriched with carbohydrate compounds, followed by the crude extract and THF-soluble fraction. Another approach was aimed at obtaining bark extractives based liquid polyols suitable for producing rigid PU foams. For this purpose, oven-dried crude black alder bark water extract was liquefied with polyethylene glycol (PEG 400). The liquefaction of black alder bark and pine bark extractives was studied under different conditions, including varying temperature ranges (130-170⁰C), catalyst concentrations (0-1,5%), and bark extract content in the mixture (15-30%). The results showed that the use of sulphuric acid as a catalyst (1-1.5%) significantly improved the solubility of both extractives, enabling the attainment of extract concentrations up to 25% at 170⁰C. However, increasing the extract content beyond a certain threshold led to incomplete solubility. It was shown that the PEG-insoluble fractions consist mainly of carbohydrate components. To increase the content of biomass in liquid polyols, the effect of glycerol additions into the liquefaction agent is under study. The findings provide insights into tailoring bark-sourced polyols for polyurethane foam production through appropriate liquefaction conditions.

Preprint ARTICLE | doi:10.20944/preprints202307.0083.v1

Graph Convolutional-Based Deep Residual Modeling for Rumor Detection on Social Media

Na Ye, Dingguo Yu, Yijie Zhou, Ke-ke Shang, Suiyu Zhang

Subject: Social Sciences, Behavior Sciences Keywords: False information detection; Residual structure; Graph neural network

Online: 5 July 2023 (09:52:20 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202212.0522.v1

Using HyperLogLog to Prevent Data Retention in Social Media Streaming Data Analytics

Marc Löchner, Dirk Burghardt

Subject: Computer Science And Mathematics, Computer Networks And Communications Keywords: privacy; social media; data retention; hyperloglog

Online: 28 December 2022 (01:25:25 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202106.0685.v1

Social Media about the Company's Image as an Element of Specific Development

Justyna Żywiołek

Subject: Business, Economics And Management, Accounting And Taxation Keywords: sustainable business; social media in the enterprise; Kano’s model, enterprises reputation

Online: 28 June 2021 (16:30:25 CEST)

Show abstract| Download PDF| Share

Working Paper ARTICLE

Modelling The Degree Of Emotional Concern: COVID-19 Response In Social Media

Jose Moreno-Ortega, Juan Bernabe-Moreno

Subject: Computer Science And Mathematics, Computer Science Keywords: COVID-19; emotional profiling; emotional impact; PAD; Russell; emotional concern; searching behavior

Online: 7 April 2021 (17:55:08 CEST)

Show abstract| Download PDF| Share

Preprint REVIEW | doi:10.20944/preprints202102.0416.v1

From Zoo to Social Media: The Evolution of Human-Captive Wildlife Relations

Christian Lenzi, Siobhan Speiran, Chiara Grasso

Subject: Biology And Life Sciences, Anatomy And Physiology Keywords: zoo animals; visitor attitudes; wildlife encounters; wildlife tourism; selfie

Online: 18 February 2021 (12:13:24 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202101.0302.v1

Interpretable Multi-Head Self-Attention Architecture for Sarcasm Detection in Social Media

Ramya Akula, Ivan Garibay

Subject: Social Sciences, Media Studies Keywords: Sarcasm Detection; Self-Attention; Interpretability, Social Media Analysis

Online: 15 January 2021 (16:01:11 CET)

Show abstract| Download PDF| Share

Working Paper ARTICLE

Case Study on Privacy-Aware Social Media Data Processing in Disaster Management

Marc Löchner, Ramian Fathi, David Schmid, Alexander Dunkel, Dirk Burghardt, Frank Fiedrich, Steffen Koch

Subject: Environmental And Earth Sciences, Atmospheric Science And Meteorology Keywords: disaster management; virtual operation support teams; privacy; data retention; hyperloglog; focus group discussion

Online: 1 October 2020 (13:58:16 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202007.0542.v1

The Impact of Social Media on the Brand Capital of Famous People

Łukasz Wróblewski, Mateusz Grzesiak

Subject: Business, Economics And Management, Marketing Keywords: famous people; personal brand; Internet users; social media

Online: 23 July 2020 (08:29:28 CEST)

Show abstract| Download PDF| Share

Search Results

30633 articles found