BBC Russian

Preprint ARTICLE | doi:10.20944/preprints202406.1762.v1

The Future of Destruction: Analyzing the Potential Impact of Entropy on Technological Evolution in AGI, Autonomous Drones, and Applied Robotics

Iago Gaspar, Diogo Pedrosa, Duarte Gomes

Subject: Computer Science And Mathematics, Information Systems Keywords: Artificial General Intelligence; AGI; autonomous drones; applied robotics; warfare ethics; entropy metaphor; autonomous decision-making; AI safety; military operations; technology ethics; global stability

Online: 26 June 2024 (11:49:49 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202403.1429.v1

Shock Wave and Aeroelastic Coupling in Overexpanded Nozzle

Haifeng Hu, Xinni Gao, YuShan Gao, Jianwen Yang

Subject: Engineering, Aerospace Engineering Keywords: shock wave; side load; Aeroelastic; CFD/CSD

Online: 25 March 2024 (06:25:09 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202402.0471.v1

Reflecting Regional Conditions in Circular Bioeconomy Scenarios: A Multi-criteria Approach for Matching Technologies and Regions

Almut Güldemund, Vanessa Zeller

Subject: Environmental And Earth Sciences, Sustainable Science And Technology Keywords: circular bioeconomy; CBE; regional; transition; technology scenario; success criteria; barrier & driver; social acceptance; biomass supply chain

Online: 8 February 2024 (07:34:33 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202406.1554.v1

Towards Universal Applied Supervised Machine Learning: A Multi-Agent Framework For Systematic Pipeline Executions

Diogo Pedrosa, Iago Gaspar

Subject: Computer Science And Mathematics, Artificial Intelligence And Machine Learning Keywords: Multi-Agent Systems (MAS), Machine Learning Pipelines, Supervised Learning, Data Science
Automation, Large Language Models (LLM), Reinforcement Learning (RL), Time Series Forecasting, AI Agents,
Open-Source Framework, Model Efficiency, Task Automation ·; Scalability in Machine Learning, Model Adaptability,
Collaborative AI Systems, Machine Learning Workflow Optimization

Online: 24 June 2024 (09:50:32 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202405.0983.v1

Numerical and Experimental Determination of Selected Parameters of the Liquid Flat-Plate Solar Collector under Outdoor Conditions

Wiesław Zima, Łukasz Mika, Karol Sztekler

Subject: Engineering, Energy And Fuel Technology Keywords: liquid flat-plate solar collector; transient states; in-house mathematical model; in-house computer program; experimental verification; collector time constant; collector instantaneous efficiency

Online: 15 May 2024 (10:26:53 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202405.1490.v1

Influence of Moisture Content on Some Mechanical Properties of Maize

Manuel Moya, David Sánchez, José Ángel Romero, José Ramón Villar

Subject: Engineering, Architecture, Building And Construction Keywords: agricultural silos; numerical methods; mechanical properties; maize; angle of internal friction; specific weight; apparent cohesion; moisture content

Online: 23 May 2024 (07:25:48 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202409.1783.v1

Investigation on Hydrodynamic Performance and Wall Temperature of Water-cooled Wall in a 1000 MW Boiler under Low-load Conditions

Peian Chong, Xiaolei Zhu, Jianning Li, Xiao Li, Lei Deng

Subject: Engineering, Energy And Fuel Technology Keywords: Supercritical boiler; Water-cooled wall; Hydrodynamic performance; Wall temperature characteristics; Deep peak shaving

Online: 24 September 2024 (11:33:32 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202408.1207.v1

Exceptional Strength-Ductility Combinations of a CoCrNi-Based Medium-Entropy Alloy via Short/Medium-Time Annealing after Hot-Rolling

Yongan Chen, Dazhao Li, Zhijie Yan, Shaobin Bai, Ruofei Xie, Jian Sheng, Jian Zhang, Shuai Li, Jinzhong Zhang

Subject: Engineering, Mechanical Engineering Keywords: medium-entropy alloy; precipitates; mechanical properties; deformation mechanisms

Online: 16 August 2024 (08:38:41 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202406.2036.v1

Development of Broad-Range Microbial Minimal Culture Medium for Lanthanide Studies

Gianmaria Oliva, Giovanni Vigliotta, Luca Di Stasio, Ermanno Vasca, Stefano Castiglione

Subject: Biology And Life Sciences, Biology And Biotechnology Keywords: REE; Bacillus stratosphericus; lanthanide toxicity; environmental screening; complexation equilibria; cerium; lanthanide accumulation; Debaryomyces hansenii

Online: 1 July 2024 (03:59:35 CEST)

Show abstract| Download PDF| Supplementary Files| Share

Preprint CASE REPORT | doi:10.20944/preprints202403.1619.v1

A Rare Onset of T Lymphoid Blast Crisis in Chronic Myeloid Leukemia with Two Distinct Blast Populations

Alessandra Mongia, Francesca Romano, Sara Ciullini Mannurita, Benedetta Peruzzi, Sara Bencini, Daniela Parrini, Laura Fasano, Alessandra Fanelli

Subject: Medicine And Pharmacology, Hematology Keywords: chronic myeloid leukemia; T lymphoid blastic crisis

Online: 27 March 2024 (06:21:04 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202403.1215.v1

Surveillance of Bacterial Load and Multi-drug Resistant Bacteria on Surfaces of Public Restrooms

Khadega Ibrahim, Maisha Tahsin, Aninda Rahman, Shaikh Mizanoor Rahman, MD Mizanur Rahman

Subject: Public Health And Healthcare, Public, Environmental And Occupational Health Keywords: Public Restrooms; Contamination; Coliforms; Gram-positive; Gram-negative; Antibiotic Sensi-tivity; Antibiotic Resistance; Multidrug Resistant

Online: 21 March 2024 (02:03:57 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202405.1933.v1

On-target Deposition from Two Engine-Powered Sprayers in Medium Foliage Density Citrus Canopies

Peter Ako Larbi

Subject: Engineering, Other Keywords: air-assistance; airblast sprayer; application rate; fluorometry; spray penetration

Online: 29 May 2024 (07:45:21 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202409.0934.v1

Synthesis of Novel Fe-CNs-P/S Carbon Materials for Sustainable Water Treatment: Activation of Persulfate for Efficient TC Degradation

Huali Zhang, Kanghui Zhang, Qin Liu, Tongshan Shi, Jiaheng Cui, Jinxiu Li

Subject: Environmental And Earth Sciences, Environmental Science Keywords: Sustainable Water Treatment; NH2-MIL-101 (Fe); Carbon materials; Doping; Tetracycline (TC); Persulfate activation

Online: 12 September 2024 (13:10:08 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202409.0012.v1

Optimization of Acid-Producing Culture Medium for Collaborative Fermentation of Three Pit Mud Anaerobic Functional Bacteria

Chunhui Wei, Yilian Tu, Jun Xie, Zhi Huang

Subject: Biology And Life Sciences, Food Science And Technology Keywords: pit mud; anaerobic bacteria; caproic acid; butyric acid; optimization

Online: 2 September 2024 (13:31:19 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202408.0716.v1

Influence of Flow Channel Structural Parameters on the Hy-draulic Performance and Anti–clogging Performance of Variable Flow Emitters

Peining Niu, Yan Mo, Baolin Yao, Zongze Yang

Subject: Biology And Life Sciences, Agricultural Science And Agronomy Keywords: subsurface drip irrigation; variable flow emitter; flow index; particle passage rate; minimize

Online: 10 August 2024 (17:11:06 CEST)

Show abstract| Download PDF| Share

Variable flow emitters are a new type of emitter for underground drip irrigation that are used in locations where soil moisture is difficult to transport to the surface, which leads to crop emer-gence difficulties. The flow channel structure parameters of emitters affect the hydraulic per-formance of the emitter and its anticlogging ability. In this study, the variable flow emitter at the conventional low–flow water supply stage is taken as the research object. A combination of CFD numerical simulation of a two–phase flow of water and sand and clear water testing of test samples is applied to study the influence laws of 10 groups of variable flow emitter structural combinations on the effluent flow rate (q), flow index (x), particle passage rate and flow field inside the flow channel. The results show that the Realizable k–ε turbulence model can be used to simulate the flow field inside the variable flow emitter flow channel. The nRMSE between the measured and simulated values of q is 11.23%, and the relative error between the measured and simulated values of x is 4.66%, which gives a high simulation accuracy. The polar analysis shows that the tooth angle A has the smallest effect on the effluent flow rate q0.1 under 0.1 MPa, x, and particle passage rate of the variable flow emitter. The depth of the flow channel D, the spacing of the teeth B, and the height of the teeth E have a different order of precedence in the influence of the three indices, which are D > B > E > A, B > E > D > A, and E > B > D > A, respectively. The value of particle passage rate is positively correlated with the mean flow velocity (v) and the mean turbulent kinetic energy (k) in the flow channel, and particle passage rate tends to increase and then decrease with the increase of x. The retention time (t) of the particles in the flow channel is closely related to the magnitude of v and k. Three multivariate linear regression equations (R2 = 0.883 ~ 0.995) were constructed for q0.1, x, and particle passage rate versus the flow channel structural parameters. Using the scipy.optimize.minimize function in Python, we de-termined the three optimal combinations of flow channel structural parameters corresponding to better hydraulic performance: q0.1 is 1.5 or 2 L/h (objective function y = min x), better clogging resistance (y = max particle passage rate), and both (y = min (0.5 x - 0.5 particle passage rate)). The research results can provide a ref-erence for the optimal design of variable flow emitters.

Preprint ARTICLE | doi:10.20944/preprints202409.1845.v1

Production of Oncolytic Measles Virus in Vero Cells: Impact of Culture Medium and Multiplicity of Infection

Dustin Eckhardt, Jana Mueller, Jonas Friedrich, Jan-Philip Klee, Irakli Sardlishvili, Lars Erik Walter, Stefanie Fey, Peter Czermak, Denise Salzig

Subject: Biology And Life Sciences, Virology Keywords: multiplicity of infection (MOI); media adaption; chemically-defined medium (CDM); serum-free medium (SFM); viral vaccines; vectors; virus-like particles (VLPs); cell culture research; process development

Online: 24 September 2024 (04:49:03 CEST)

Show abstract| Download PDF| Supplementary Files| Share

Preprint ARTICLE | doi:10.20944/preprints201612.0079.v1

A Broad-Area Method for Estimation of Upwelling Medium Wave Infrared for Fire Detection

Bryan Hally, Luke Wallace, Karin Reinke, Simon Jones

Subject: Environmental And Earth Sciences, Environmental Science Keywords: fire detection; upwelling radiation; diurnal variation; training data; geostationary sensors

Online: 15 December 2016 (09:22:10 CET)

Show abstract| Download PDF| Share

Preprint HYPOTHESIS | doi:10.20944/preprints202402.1074.v1

A New Theory of Tree Sap Flow

András Török, Domokos Máthé, Imre Hegedus

Subject: Biology And Life Sciences, Forestry Keywords: plant water transport, suction-pressure pipe, pulsating system, different time-phase cycle, aquaporin

Online: 19 February 2024 (16:46:00 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202403.0118.v1

Solid Phase Oligo-DNA Extraction from Complex Medium Using an Aminated Graphene/Nitrocellulose Membrane Hybrid

Alin Georgian Toader, Valentin Titus Grigorean, Ionita Mariana

Subject: Biology And Life Sciences, Biochemistry And Molecular Biology Keywords: nitrocellulose; fluorescence quenching; DNA extraction; aminated graphene; ions

Online: 4 March 2024 (10:36:50 CET)

Show abstract| Download PDF| Share

Preprint COMMUNICATION | doi:10.20944/preprints202405.0366.v1

Direct Cold Sintering of α-Al₂O₃ Ceramics in a Pure Water Medium

Anastasia A. Kholodkova, Maxim V. Kornyushin, Arseniy N. Khrustalev, Levko A. Arbanas, Andrey V. Smirnov, Yurii D. Ivakin

Subject: Chemistry And Materials Science, Ceramics And Composites Keywords: gibbsite; boehmite; alumina; cold sintering process; porous ceramics

Online: 7 May 2024 (10:22:49 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202403.1876.v1

Regulation of cysteine homeostasis and its effect on Escherichia coli sensitivity to ciprofloxacin in LB medium

Galina Smirnova, Aleksey Tyulenev, Lyubov Sutormina, Tatyana Kalashnikova, Nadezda Muzyka, Vadim Ushakov, Zoya Samoilova, Oleg Oktyabrsky

Subject: Biology And Life Sciences, Immunology And Microbiology Keywords: cysteine homeostasis; glutathione; H2S; Fur and SOS regulons; growth; respiration; antibiotics; bacterial survival

Online: 1 April 2024 (10:18:59 CEST)

Show abstract| Download PDF| Supplementary Files| Share

Preprint ARTICLE | doi:10.20944/preprints202409.1787.v1

Influence of Al and Ti Alloying and Annealing on the Microstructure and Compressive Properties of Cr-Fe-Ni Medium-Entropy Alloy

Keyan An, Tailin Yang, Junjie Feng, Honglian Deng, Xiang Zhang, Zeyu Zhao, Qingkun Meng, Jiqiu Qi, FuXiang Wei, Yanwei Sui

Subject: Chemistry And Materials Science, Metals, Alloys And Metallurgy Keywords: high-entropy alloy; Al and Ti elements; annealing heat treatment; second phase strengthening; compressive properties

Online: 24 September 2024 (03:07:19 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202407.0704.v1

Workers’ Exposure to Chemical Risk in Small and Medium-Sized Enterprises: Assessment Methodology and Field Study

Daniel Onuț Badea, Doru Costin Darabont, Iulian Ivan, Vicențiu Ciocîrlea, Raluca Aurora Stepa, Oana Roxana Chivu

Subject: Public Health And Healthcare, Public, Environmental And Occupational Health Keywords: chemical hazards; occupational safety and health; risk assessment method workers

Online: 9 July 2024 (07:58:39 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202403.1348.v1

Driving Blockchain Adoption in Small and Medium Enterprise Sector: Introducing the Concept of “Transformation Conditions”

Helen Shun-mun WONG, Carmen Ka-man SUM, Hau-ling CHAN

Subject: Business, Economics And Management, Business And Management Keywords: blockchain; small and medium enterprises; transformation conditions

Online: 22 March 2024 (06:29:23 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202311.1177.v1

Regulation Law of Tempering Cooling Rate on Toughness of Medium Carbon Medium

Chao Yang, Ting-ting Xu, Hong-shan Zhao, Chun-dong Hu, Han Dong

Subject: Engineering, Metallurgy And Metallurgical Engineering Keywords: Temper embrittlement；Medium carbon medium alloy steel; Martensite; Bainite; toughness

Online: 17 November 2023 (14:53:38 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202407.0851.v1

Greening the Grassroots: Evaluating Environmental Management in Nigeria's Small and Medium-Sized Enterprises

Sunday Amiolemen, Olapeju Adenekan, Idowu Ologeh, Koleayo Omoyajowo, Oluseye Oludoye, Morufu Raimi

Subject: Environmental And Earth Sciences, Environmental Science Keywords: Environmental Management; SMEs; Environmental pollution; Eco-friendly innovation; Sustainable development

Online: 10 July 2024 (12:58:03 CEST)

Show abstract| Download PDF| Share

Preprint REVIEW | doi:10.20944/preprints202402.0386.v1

Integrated Photonic Sensors with Enhanced Evanescent Field: Unveiling the Dynamic Interaction with the Ambient Medium

Muhammad A. Butt

Subject: Physical Sciences, Optics And Photonics Keywords: Evanescent field; photonic sensor; optical waveguide; light-matter interaction; absorption; mid-infrared.

Online: 6 February 2024 (15:36:54 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202408.0328.v1

Influence of Fault Dip Angle and Strength on Fault Slip Characteristics of Gas Storage

Songlin Cheng, Zhide Wu, Xiaosong Qiu, Haitao Xu, Guosheng Ding, Bingbing Liu

Subject: Engineering, Energy And Fuel Technology Keywords: Gas storage; Fault; Fault sliping; Fault sealing; Fault dip angle; Fault gouge

Online: 5 August 2024 (12:49:06 CEST)

Show abstract| Download PDF| Share

The alternating stress caused by periodic high-pressure injection and extraction in gas storage can potentially induce fault slippage, compromising the sealing integrity of faults within these facil-ities. Understanding the mechanical behavior of faults under alternating stress is crucial for en-suring the long-term stability and safety of gas storage operations. To explore the impact of fault dip angle and fault gouge strength on fault slip characteristics, fault samples were prepared with uniaxial compressive strengths of 20.1, 30.2, 42.4, and 51.4 MPa at two distinct dip angles. Triaxial compression experiments were conducted under alternating stress conditions corresponding to operational pressures at a specific gas storage in China. Results indicate that faults with dip angles of 30° and 45° tend to fail at their weakest points. Increasing strength of fault gouge shifts failure mechanisms from interfacial failure between gouge and surrounding rock towards internal gouge failure, often accompanied by shear failure across sections, resulting in characteristic "X"-shaped conjugate shear failures. The decrease in the ratio of bedrock strength to fault gouge strength elucidates the observed phenomena of initial reduction followed by increased fault deformation. Transition points for faults with 30° and 45° dips occur around the strength ratios of 1.7/1 and 1.2/1, respectively. Fault damage exhibits a negative correlation with fault gouge strength and a positive correlation with fault dip angle. Samples with higher strength fault gouge at a 30° dip angle generally incur less damage compared to those with lower strength fault gouge at a 45° dip angle. Moreover, higher maximum static friction coefficients denote greater fault resistance to slipping, with 30° faults consistently demonstrating superior resistance compared to 45° faults. Additionally, higher strength fault gouge consistently enhances slip resistance under identical dip angles.

Preprint ARTICLE | doi:10.20944/preprints202406.1263.v1

Optimizing Traffic Flow Through Congestion Management at Peshawar Toll Plaza: A Data-Driven Approach

Adil Hussain, Muhammad Afzal, Tariq Tariq

Subject: Computer Science And Mathematics, Analysis Keywords: PTV Vissim; Toll Plaza optimization; Traffic flow; Toll-collecting effectiveness; Data analysis; Vehicle classifications; intelligent traffic management systems

Online: 20 June 2024 (10:46:17 CEST)

Show abstract| Download PDF| Share

Toll plaza optimization is essential for improving traffic flow and easing congestion on road networks. This study aims to suggest and assess potential optimization solutions for the Peshawar toll plaza, considering variables like traffic volume, toll-collecting effectiveness, and customer facilitation. Different resources are used for data collection, like the National Highway Authority of Pakistan. Physical data is collected from the established Toll Plaza of Peshawar, along with the development of each line. The goal of this study is to suggest and assess potential optimization solutions for the Peshawar toll plaza, considering variables like traffic volume, toll-collecting effectiveness, and customer happiness. The analysis of present traffic patterns, the detection of bottlenecks, and the creation of plans to ease congestion and enhance overall traffic flow are all part of the optimization process. The approaches used in this study include data analysis, simulation, and traffic modeling. PTV VISSIM is software for transportation planning, design, and analysis. The simulations consider various conditions, such as variable traffic volumes, toll collection methods, and lane configurations. When comparing the different optimization strategies, performance indicators like trip time, latency, and queue length are utilized to determine which approach is practical. Waiting time Vs. Existing each lane, etc, is explained. In the end, comparing queue lengths and throughput across different lane scenarios shows that maximizing throughput with existing lanes yields up to 45% improvement with E-tag lanes, 40% with existing E-tag lanes, 38% with E-tag plus additional toll and cash lanes, 32% with three cash lanes, and 28% with two E-tag lanes. Failure to regularly monitor and adjust the existing lane pattern scenario based on traffic patterns can lead to queues being 20% longer. Without proactive evaluation and optimization, there is a potential 63% opportunity for queue length improvement

Preprint ARTICLE | doi:10.20944/preprints202409.0232.v1

Characterization of Qu-aroma of Medium-High Temperature Daqu from Different Production Areas Using Sensory Evaluation, E-nose, and GC-MS/O Analysis

Jie Deng, Jia Zheng, Xing Li, Zhiguo Huang, Dan Huang, Guangbin Ye, Huibo Luo

Subject: Biology And Life Sciences, Food Science And Technology Keywords: Medium-High Temperature Daqu; Qu-aroma; Volatile compounds

Online: 4 September 2024 (03:08:27 CEST)

Show abstract| Download PDF| Share

BACKGROUND: Qu-aroma is a critical quality indicator for medium-high temperature Daqu (MT-Daqu), significantly influencing the aroma profile of strong-aroma Baijiu (SAB). SAB is produced across various regions in China, each with unique environmental conditions and production techniques. These regional differences are likely to cause variations in the Qu-aroma of MT-Daqu. Despite this, comprehensive research on the variations in Qu-aroma across different regions has been lacking. This study aims to address this gap by utilizing Gas Chromatography-Olfactometry-Mass Spectrometry (GC-O-MS) and electronic nose (E-nose) technology, combined with sensory evaluation, to analyze the differences in Qu-aroma characteristics and volatile compound profiles of MT-Daqu from seven distinct production areas.RESULTS: Sensory analysis identified seven broad aroma categories and 25 specific aromas characterizing the Qu-aroma of MT-Daqu samples. Chen aroma and roasted aroma were notably more prevalent in MT-Daqu samples from Sichuan compared to those from other regions (P < 0.05), while the fermentation aroma was less prominent in Sichuan samples. In total, 123 volatile compounds were detected in MT-Daqu, with 46 classified as aroma-active compounds. Among these, 21 aroma-active compounds were identified as markers distinguishing Sichuan MT-Daqu from those produced in non-Sichuan regions, showing significant differences in their concentrations (P < 0.05). Additionally, six major aroma-active compounds-ethyl isovalerate, ethyl heptanoate, hexanal, 1-nonanal, (E)-2,4-decadienal, and 2,3-dimethyl-5-ethylpyrazine-were found to significantly contribute to the aroma differences between Sichuan and non-Sichuan MT-Daqu.CONCLUSION: This study delineates the distinct Qu-aroma characteristics of MT-Daqu from various SAB production areas and identifies the aroma-active compounds responsible for these differences. The insights gained from this research offer valuable guidance for optimizing flavor profiles in MT-Daqu production, potentially enhancing the overall quality and regional distinctiveness of the product.

Preprint ARTICLE | doi:10.20944/preprints202403.1714.v1

Technology of Controlled Film Flow Granulation of Materials

Ivan Kazachkov

Subject: Physical Sciences, Applied Physics Keywords: film flow; controlled disintegration; drops and granules; high cooling rate; amorphous; three new phenomena; wide range of granules

Online: 28 March 2024 (09:34:30 CET)

Show abstract| Download PDF| Share

Preprint BRIEF REPORT | doi:10.20944/preprints202104.0658.v1

SCA Medium: A New Culture Medium for the Isolation of all Candida auris Clade

Ahmad Ibrahim, Lucie Peyclit, Rim Abdallah, Saber Khelaifia, Amanda Chamieh, Jean-Marc Rolain, Fadi Bittar

Subject: Biology And Life Sciences, Biochemistry And Molecular Biology Keywords: Candida; Candida auris; Culture; Emerging fungus; Isolation; Specific medium

Online: 26 April 2021 (11:06:41 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202406.1029.v1

Optimization of bridge pier winding flow numerical simulation scheme based on Delft3D

Liu Xiao, Chen Qingsheng, Zeng Zhaoning, Dong Zhuang

Subject: Engineering, Civil Engineering Keywords: piers winding flow; numerical simulation; Delft3D; scheme optimization

Online: 15 June 2024 (04:44:31 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202406.0079.v1

Investigation of Toughening Mechanisms in Elastomeric PC Blends through Morphological and Mechanical Characterization at Small and Medium Strain Rates

Pedro Veiga Rodrigues, Bruno Ramoa, Maria Cidália R. Castro, Ana Vera Machado

Subject: Chemistry And Materials Science, Polymers And Plastics Keywords: polycarbonate elastomeric blends; toughening mechanism; small strain rate; medium strain rate

Online: 6 June 2024 (03:12:19 CEST)

Show abstract| Download PDF| Supplementary Files| Share

Preprint ARTICLE | doi:10.20944/preprints202404.1738.v1

Distribution Generators Optimal Power Flow with Renewable Resources Network with Grey Wolf Optimization

Papinaidu Tentu, Praveen Kumar Yadav Kundala, Naresh Kumar Darimireddy

Subject: Engineering, Electrical And Electronic Engineering Keywords: MOGA-GWO; Grey Wolf Optimizer; optimal power flow; RES

Online: 26 April 2024 (10:01:59 CEST)

Show abstract| Download PDF| Share

Preprint REVIEW | doi:10.20944/preprints202408.1354.v1

High-Flow Oscillatory Ventilation in Pediatric Patients With Congenital Cardiovascular Diseases

Stefano Scollo, Luigi La Via, Piero Pavone, Marco Piastra, Giorgio Conti, Carmelo Minardi

Subject: Medicine And Pharmacology, Pediatrics, Perinatology And Child Health Keywords: HFOV; Pediatric Critical Care; Congenital Heart Disease; Acute Respiratory Distress Syndrome; ARDS; Pulmonary Hypertension; Mechanical Ventilation; Newborn

Online: 20 August 2024 (03:38:33 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202408.2033.v1

Fractional Flow Reserve Implications for Clinical Decision Making in Coronary Artery Disease

Andrei Grib, Marcel Abras, Artiom Surev, Livi Grib

Subject: Medicine And Pharmacology, Cardiac And Cardiovascular Systems Keywords: fractional flow reserve; coronary artery disease; visual assessment variability; clinical decision making

Online: 28 August 2024 (13:40:49 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202403.0877.v1

Study on the Macro-Fine Mechanical Behavior of Ores Flow Based on Discrete Element Method

Zhiguo Xia, Zhe Deng, Zengxiang Lu, Chenglong Ma

Subject: Engineering, Mining And Mineral Processing Keywords: ore storage section of orepass; discrete element method; ore-rock flow characteristics; lateral pressure of shaft wall; wall damage degree

Online: 15 March 2024 (14:41:00 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202408.0718.v1

Optimizing Power Flow in Northern Cameroon’s Interconnected Grid: Challenges and Solutions

Jean Ndoumbe, Ivan Basile Kabeina

Subject: Engineering, Electrical And Electronic Engineering Keywords: Power flow; Newton-Raphson; MATLAB; Grid stability

Online: 12 August 2024 (04:02:55 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202403.0426.v1

Optimization of Erosion Resistant Coating Under High-Speed Flow Conditions in Wellbore to Improve Operational Efficiency

Minsheng Wang, Lingchao Xuan, Lei Wang, Jiangshuai Wang

Subject: Engineering, Energy And Fuel Technology Keywords: Wellbore; High-speed fluid flow; Optimization; Materials; Operational efficiency

Online: 8 March 2024 (03:41:09 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201609.0085.v2

Modeling and Simulation of Passenger Flow Distribution in Urban Rail Transit Hub Platform

Long Gao, Limin Jia

Subject: Computer Science And Mathematics, Computational Mathematics Keywords: passenger flow distribution model; simulation design; performance evaluation; passenger flow volume; service level; urban rail transit hub platform

Online: 2 December 2016 (07:52:00 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202403.0054.v1

Research on Fault Detection by Flow Sequence Algorithm with Deep Learning Model for Industrial Internet of Things

Dongfeng Lei, Liang Zhao, Dengfeng Chen

Subject: Engineering, Control And Systems Engineering Keywords: Industrial Internet of Things; Deep learning; Subsequence classification; Fault diagnosis

Online: 1 March 2024 (14:05:52 CET)

Show abstract| Download PDF| Share

Preprint COMMUNICATION | doi:10.20944/preprints202405.0234.v1

Microstructure and Elemental Composition of Coffea arabica L. Roasted Medium of Specialty and with “Pluma” Denomination of Origin

Jesica Jiménez, Luis Robledo, Ema Antonio, Alma Pérez, Marco Sánchez, Iván García

Subject: Biology And Life Sciences, Biology And Biotechnology Keywords: Coffea arabica L; microstructure; elemental composition; roasted medium; “ Pluma”

Online: 6 May 2024 (08:11:43 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201610.0029.v1

Entropy Generation Analysis at Mixed MHD Convection in a Square Lid-Driven Cavity Filled With Darcy–Brinkman- Forcheheimer Porous Medium

Rahma Bouabda, Mounir Bouabid, Mourad Magherbi

Subject: Engineering, Automotive Engineering Keywords: Mixed MHD convection; porous media; Lid-Driven Cavity; Entropy generation; numerical CVFEM method

Online: 10 October 2016 (09:56:36 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202408.0205.v1

IR4.0 Readiness Model for Small and Medium Enterprises (SMEs)

Nurul Izzati Saleh

Subject: Business, Economics And Management, Human Resources And Organizations Keywords: Digital Transformation; IR4.0; Self-Readiness; Diffusion of Innovation; SMEs

Online: 3 August 2024 (08:14:39 CEST)

Show abstract| Download PDF| Share

The Industrial Revolution 4.0 (IR4.0) is transforming the global economy, necessitating mall and medium-sized enterprises (SMEs) to adopt new technologies like artificial intelligence (AI), the Internet of Things (IoT), blockchain, and cloud computing. Therefore, SMEs need to assess their readiness to identify capabilities and areas for improvement to remain competitive. However, existing IR4.0 readiness assessment such as the Industry4WRD Readiness Assessment and Industry 4.0-Readiness by IMPULS German are time-consuming and restrict the participation of various sectors. Using the understanding of theories such as Technology Acceptance Model (TAM), Unified Theory of Acceptance and Use of Technology (UTAUT), Technology Readiness Index (TRI), and Diffusion Of Innovation (DOI), this study developed an initial research model that identifies the dimensions of IR4.0 readiness; (i) organization, (ii) data, (iii) infrastructure, (iv) analytics, and (v) IT, development and operations. This study carried out qualitative methods through four different phases. The first phase is a systematic literature review, and data collection through participant observation (PO) in IR4.0 skills training programs, seminars, and workshops. The second phase is the development of an initial research model to identify the dimensions of IR4.0 readiness that will be used in the next phase. The third phase is a survey on SME’s IR4.0 readiness via the IR4.0 e-Readiness Checker (IR4.0 eRC) readiness assessment system, which produces the final research model, IR4.0 SME Readiness Model. In the fourth phase, the IR4.0 Readiness Model is confirmed for use by SMEs in Malaysia through interviews with three industry experts in Malaysia. Based on the 50 responses in the IR4.0 eRC evaluation, the average IR4.0 readiness of SMEs is 66%, and only 10 SMEs with less than 50%, showing room and improvement opportunities for the continuous research and development of IR4.0 transformation. This study developed IR4.0 readiness model for SMEs to assess readiness for IR4.0 transformation, support investments in IoT projects and employee upskilling programs.

Preprint COMMUNICATION | doi:10.20944/preprints202306.1688.v1

Vortex Beam in Turbulent Kerr Medium

Andrey D. Bulygin, Yury E. Geints, Ilia Yu. Geints

Subject: Physical Sciences, Optics And Photonics Keywords: optical vortex; optical turbulence; self-focusing; ultrashort laser pulse

Online: 23 June 2023 (13:14:00 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201712.0071.v1

Models as a Medium in Architecture

Atli Magnus Seelow

Subject: Arts And Humanities, Art Keywords: history of architecture; architectural models; architectural media

Online: 12 December 2017 (07:05:09 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202409.0973.v1

Multi-objective Evolutionary Optimization of Transonic Natural Laminar Flow Wing at High Reynolds Number

Shaojun Luo, Zhili Tang, Yongbin Chen

Subject: Engineering, Aerospace Engineering Keywords: Variable-fidelity hierarchical evolutionary optimization; Pareto non-dominated solutions; Transition predicition; Natural laminar flow wing; Shock wave control technology

Online: 12 September 2024 (07:39:03 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201701.0052.v1

MHD Flow and Heat Transfer Analysis in Wire Coating Process Using Elastic-Viscous Fluid

Zeeshan Khan, Rahan Ali Shah, Saeed Islam, Hamid Jan, Bilal Jan, Haroon-Ur Rasheed

Subject: Computer Science And Mathematics, Computational Mathematics Keywords: wire coating; elastico-viscous fluid; MHD flow; heat transfer; ADM and OHAM

Online: 10 January 2017 (10:33:57 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202408.0074.v1

Series Solution and Its Extension for the Nonlinear Flow Response of Soft Hair Beds

Bo Hua Sun, Bo Pang, Meng Li

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: soft hair beds; Stokes flow; series solution; perturbation solution

Online: 6 August 2024 (03:11:27 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202408.2252.v1

Smallholder Market-Driven Cassava Production: Inefficiencies of Farmer-Led Small and Medium-Sized Enterprises in Lake Region, Kenya

Simon Wanjala Omondi, Paul Tana, Cosmas Lutomia

Subject: Social Sciences, Area Studies Keywords: Farmer-led SMEs; Market; Cassava value chain; entrepreneurial model; Lake Region Kenya

Online: 3 September 2024 (05:08:09 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202409.1855.v1

Antimicrobial Susceptibility of Uropathogenic Escherichia coli with Analysis of Impact of Socio-Economic Factors in Low, Medium and High-Income Countries

Meher Rizvi, Maria Khan, Amina AL Jardani, Ujjala Ghoshal, Zaaima AL Jabri, Mohammad Ahanjan, Azza AL Mamari, Nawal AL Shizawi, Hiba Sami, Abdullah Balkhair, Adila Shaukat, Alwarith Nasser Salem Alkharusi, Abdulrahman Almahrouqi, Afreenish Hassan, Ajay Kumar, Amal Malehi, Amina Gul, Ashima Singh, Asma Said Hamed AL Shidhani, Areena Hoda Siddiqui, Aruna Poojary, Azza AL Rashdi, Bradley Langford, Dmytro Stepanskyi, Abbas Dolatabadi, Aisha Al Mufraji AL Mufraji, Elham Said Ahmed AL Risi, Garima Kapoor, Isabella Princess, Hatim Ali Eltahir, Hilal Al Sidairi, Kaitlyn Dougherty, Katia Iskandar, Ken Masters, Ibrahim Khalaf Hamdan AL Busaidi, Laila AL Yazidi, Mahfuza Nasrin, Mahmood Salim AL Subhi, Mallika Sengupta Mallika Sengupta, Manisha Khandait, Nada Khalfan AL Tamtami, Nada Khafan Alsiyabi, Nawal AL Kindi, Nazla Musthafa Luthfee, Neha Shreshtha, Nihal Mohamed Amur AL Riyami, Noora Hilal Ali AL Busaidi, Nupur Goel, Oksana Ishchenko, Omnia Mohamed Elnabawy Ahmed Taher, Pragnya Paramita Jena, Rajni Ekadashi, Razan Zadjali, Reba Kanungo, Sara Abolghasemi, Salima Al-maqbali, Sanjay Jaju, Sayantan Banerjee, Shadma Yaqoob, Shahnaz Sali, Shafqat Husnain Khan, Shalini Malhotra, Stephen Hughes, Sundas Shaukat, Syed Mohammed Atif, Vrushali Vishwas Patwardhan, Victorien Dougnon, Wahid Khan, Walid Wali, Zakariya AL Muharrmi, Zeeshana Basit, Jasashree Choudhury, Rachita Pravalina, Sanjeev Singh, Sarman Singh, Neelam Taneja, Raman Sardana, Pawan Kapoor, Rajeev Soman, Rashid Al Abri

Subject: Medicine And Pharmacology, Epidemiology And Infectious Diseases Keywords: community acquired UTI; Escherichia coli; antimicrobial susceptibility; Indian subcontinent; MENA; GDP; temperature

Online: 24 September 2024 (12:32:05 CEST)

Show abstract| Download PDF| Supplementary Files| Share

Preprint ARTICLE | doi:10.20944/preprints202403.0528.v1

The Impact of Soil and Water Conservation Measures on base flow modification: Evidence From Northeast Highland of Ethiopia

Mohammed Mihidin, Mekonen Ayana, Zelalem Biru, Tenna Alamerew, Gizaw Desta

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: Soil and water conservation; micro-catchments; base flow

Online: 8 March 2024 (12:59:37 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202406.0277.v1

Modelling of Granular Sediment Transport in Steady Flow Over a Mobile Sloped Bed

Jarosław Biegowski, Magdalena Pietrzak, Iwona Radosz, Leszek M. Kaczmarek

Subject: Engineering, Civil Engineering Keywords: granular mixture; steady flow; sediment transport rate; sediment velocity; sediment concentration; mobile sloped bed

Online: 5 June 2024 (10:12:37 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202403.0701.v2

The Impact of Soil and Water Conservation Measures on Base Flow Modification in the Northeastern Highland of Ethiopia

Mohammed Seid Muhidin, Mekonen Ayana, Zelalem Birru Gonfa, Tena Alamerew, Gizaw Desta Gessesse

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: Soil and water conservation; micro-catchments; base flow

Online: 25 April 2024 (11:15:31 CEST)

Show abstract| Download PDF| Share

Abstract: Severe land degradation is the principal environmental problem in Ethiopian highlands in the form of soil erosion, and soil fertility loss, which is caused by human intervention for food, shelter, and energy demands. Soil erosion contributes to the loss of precious soil and water resources which are the basis of agricultural production and provide numerous other eco-system services. The Ethiopian highlands are one of the most degraded regions in the world. To combat such problems, the government of Ethiopia has been implementing massive soil and water conservation works at the watershed scale since 2010 to conserve soil and water resources. Mount Yewel is one of the highlands in Northeastern Ethiopia where intensive soil and water conserva-tion has been implemented. Despite the massive investment in soil and water conservation measures, most of the rivers in the highlands of Ethiopia carry huge amounts of sediment with high flood risks in the wet season and streams are dried up in the dry period. Nonetheless, the impact of soil and water conservation measures on flood reduction and dry season flow en-hancement has not yet been quantified and evaluated. This research was then conducted on paired micro-catchments of Mount Yewel with the main objective of evaluating the impact of soil and water conservation measures on base flow modification. Stream flow and rainfall data were col-lected from 22/11/2020 to 8/11/2022 on paired micro-catchments of Mount Yewel at their outlets and centers respectively. Base flow separation was done from the stream hydrograph using Sp. Hydro base flow separation tool and SPSS Ver.21 statistical software were employed for data analysis. Flow duration curves (FDC) for both watersheds were developed to compare the stream flow patterns between treated and untreated micro-catchments of Mount Yewel. The FDC indi-cated that the base flow from treated micro-catchment is higher and sustained in the dry season while it is low and unsustained in untreated micro-catchment. From statistical analysis, there is a significant (P

Preprint ARTICLE | doi:10.20944/preprints202408.0359.v1

Enhancing the Quality of Polypropylene Recyclates: Predictive Modelling of Melt Flow Rate and Shear Viscosity

Lukas Seifert, Lisa Leuchtenberger-Engel, Christian Hopmann

Subject: Chemistry And Materials Science, Polymers And Plastics Keywords: polypropylene; recycling; Melt Flow Rate; shear viscosity; symbolic regression; predictive modelling

Online: 5 August 2024 (23:27:20 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202309.1191.v1

Short- and Medium-Term Electricity Consumption Forecasting Using Prophet and GRU

Namrye Son, Yoonjeong Shin

Subject: Computer Science And Mathematics, Computer Science Keywords: prophet; LSTM; GRU; meteorological data; electricity consumption forecasting

Online: 19 September 2023 (08:33:08 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201610.0110.v1

High-Speed Visual Analysis of Fluid Flow and Heat Transfer in Oscillating Heat Pipes with Different Diameters

Xiangdong Liu, Qing Sun, Chengbin Zhang, Liangyu Wu

Subject: Engineering, Energy And Fuel Technology Keywords: oscillating heat pipe; fluid flow motion; flow pattern; thermal performance; inner diameter

Online: 26 October 2016 (09:30:16 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202404.1187.v2

Effect of Cetyl Pyridinium Chloride on Corrosion Inhibition Properties of Mild Steel in Acidic Medium

Chandradip Kumar Yadav, Shova Neupane, Benadict Rakesh, Amar Prasad Yadav, Tulasi Prasad Niraula, Ajaya Bhattarai

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: FTIR; FESEM; EDX; inhibitor; mild steel; cetyl pyridinium chloride

Online: 30 April 2024 (15:11:06 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201610.0079.v1

Experimental Study on the Hydrodynamic Influence of River Flow Confluences to the Open Channel Stage-Discharge Relationship

Xiekang Wang, Haizhou Wang, Xufeng Yan, Xingnian Liu, Huan-Feng Duan

Subject: Engineering, Civil Engineering Keywords: river confluence; stage-discharge relationship; hydrodynamic influence; backwater; flow separation

Online: 19 October 2016 (12:31:32 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202406.0720.v1

Optimization of division and reconfiguration locations of the medium-voltage power grid based on forecasting the level of load and generation from renewable energy sources

Karol Sidor, Piotr Miller, Robert Małkowski, Michał Przemysław Izdebski

Subject: Engineering, Electrical And Electronic Engineering Keywords: optimization; MV network configuration; power losses; forecasting; renewable energy

Online: 12 June 2024 (02:46:11 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202403.1088.v1

Planetary Energy Flow and Entropy Generation Rate by Earth from 2002 to 2023

Elijah Thimsen

Subject: Environmental And Earth Sciences, Environmental Science Keywords: Nonequilibrium Thermodynamics; Life; Ecosystems; Evolution; Entropy Generation; Geoengineering; Social Sciences; Albedo; Externalities

Online: 19 March 2024 (08:06:39 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201608.0234.v1

Simulation Analysis of Capacitance Method in Two-Phase Flow Concentration Measurement by Coupled Fields

Xiaoxin Wang, Hongli Hu, Lin Li, Bo Wang

Subject: Physical Sciences, Particle And Field Physics Keywords: 3-D fluid-electrostatic coupling field; electrical sensor performance; concentration measurement; gas/solid two-phase flow

Online: 31 August 2016 (09:03:30 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202308.2183.v1

Medium Rock-Soil Temperature Distribution Characteristics in Different Time Scales and New-Type Well Layout Form in Application of Medium-Deep Borehole Heat Exchanger

Jun Liu, Yuping Zhang, Zeyuan Wang, Cong Zhou, Boyang Liu, Fenghao Wang

Subject: Engineering, Energy And Fuel Technology Keywords: Medium-deep; Heat transfer; Geothermal heating; Thermal interference; Life cycle

Online: 31 August 2023 (14:55:43 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202409.0329.v1

Mechanisms of Water Pollutant Degradation under Electric Discharge Generated in a Cavitating Flow

Anna Kamler, Vadim Bayazitov, Madina Sozarukova, Roman Nikonov, Igor Fedulov, Giancarlo Cravotto, Irina Abramova

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: water purification; water treatment plants; water treatment; reagent-free treatment; plasma treatment

Online: 5 September 2024 (04:56:57 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202208.0300.v1

The Export of Medium and High-Tech Products Manufactured in Europe

Angelo Leogrande, Alberto Costantiello, Lucio Laureti

Subject: Business, Economics And Management, Economics Keywords: Innovation; and Invention; Processes and Incentives; Management of Technological Innovation and R&D; Diffusion Processes; Open Innovation

Online: 17 August 2022 (04:33:29 CEST)

Show abstract| Download PDF| Share

Preprint REVIEW | doi:10.20944/preprints202407.2486.v1

Bridging the Gap: Understanding the Link between Blood Flow, Muscle Health, and Brain Function

Enzo Pereira de Lima, Masaru Tanaka, Caroline Barbalho Lamas, Karina Quesada, Claudia Rucco P. Detregiachi, Claudia Rucco P. Detregiachi, Adriano Cressoni Araújo, Virgínia Maria Cavallari Strozze Catharin, Marcela Vialogo Marques de Castro, Edgar Baldi Junior, Fidencio Rahal Ferraz, Vitor Cavallari Strozze Catharin, Lucas Fornari Laurindo, Sandra Maria Barbalho

Subject: Medicine And Pharmacology, Psychiatry And Mental Health Keywords: vascular diseases; vascular atrophy; cognitive dysfunction; neurodegenerative diseases; oxidative stress; inflammation; aging; insulin resistance; nutrients; comorbidity

Online: 30 July 2024 (16:53:18 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201703.0002.v1

Iterated Economic Games, Logic Gates, and the Flow of Shared Information in Strategic Interactions

Michael Harré

Subject: Business, Economics And Management, Economics Keywords: information theory; transfer entropy; game theory; logic gates; multilayer perceptrons; strategic behaviour; decision theory

Online: 1 March 2017 (09:26:28 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202405.0544.v1

Crossroads between Stability and Randomness of the Non-stationaryQueue’s Pointwise Stationary Fluid Flow Approximation modelCrossroads between Stability and Randomness of the Non-stationary Queue’s Pointwise Stationary Fluid Flow Approximation

Ismail A Mageed, Amina Becheroul

Subject: Computer Science And Mathematics, Applied Mathematics Keywords: State variable; mean arrival rate; time; time dependent root parameter; PSFFA,

Online: 9 May 2024 (10:44:29 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202003.0403.v1

Liquid Metal Flow under Traveling Magnetic Field: Solidification Simulation and Pulsating Flow Analysis

Evgeniy Shvydkiy, Egbert Baake, Diana Köppen

Subject: Chemistry And Materials Science, Metals, Alloys And Metallurgy Keywords: electromagnetic stirring; forced convection; traveling magnetic field; liquid metal; solidification; numerical analysis; pulsed magnetic field; gallium

Online: 27 March 2020 (03:22:32 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202308.2028.v1

Medium Energy Proton Detector Onboard FY-4B Satellite

HuanXin Zhang, GuoHong Shen, ShenYi Zhang, WeiGuo Zong, JianGuang Guo, AnQin Chen, Xin Zhang, Bo Su, Ping Zhou, WenTao Ji

Subject: Engineering, Aerospace Engineering Keywords: medium energy proton; space environment; light pollution; magnetic deflection; Geant4

Online: 30 August 2023 (14:07:47 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202402.1109.v2

Estimating Wastewater Dilution Using Chemical Markers and Incomplete Flow Measurements: Application to Normalisation of SARS-CoV-2 Measurements

Owen D. Jones, Amy J. Baldwin, William B. Perry, Henry Wilde, Isabelle Durance, Davey L. Jones, Andrew Weightman

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: SARS-CoV-2; wastewater-based epidemiology; wastewater; dilution; flow normalisation; Bayesian

Online: 24 April 2024 (11:44:50 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201701.0053.v2

Enantioselective Transamination in Continuous Flow Mode with Transaminase Immobilized in a Macrocellular Silica Monolith

Ludivine van den Biggelaar, Patrice Soumillion, Damien P. Debecker

Subject: Chemistry And Materials Science, Chemical Engineering Keywords: chiral amines; biocatalysis; silica monolith; enzyme immobilization; flow chemistry

Online: 13 February 2017 (09:02:56 CET)

Show abstract| Download PDF| Supplementary Files| Share

Preprint ARTICLE | doi:10.20944/preprints202404.1752.v1

DATIV – Remote Enhancement of Smart Aerosol Measurement System Using Raspberry Pi Based Distributed Sensors

Gazi Hasanuzzaman, Tom Buchwald, Christoph Schunk, Christoph Egbers, Andreas Schröder, Uwe Hampel

Subject: Engineering, Control And Systems Engineering Keywords: particulate matter; COVID-19; distributed sensors; Raspberry Pi; WiFi; open source; low cost measurement system; indoor ventilation

Online: 26 April 2024 (12:36:27 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202408.1691.v1

Protecting Small and Medium Enterprises: A Specialized Cybersecurity Risk Assessment Framework and Tool

Mohammed El-Hajj, Zuhayr Aamir Mirza

Subject: Computer Science And Mathematics, Information Systems Keywords: SMEs; Risk Assessment; Cybersecurity Framework; NIST; ISO; Risk Mitigation

Online: 23 August 2024 (07:15:44 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202205.0240.v1

Export Decision and Formal Credit Constraints - Evidence in Vietnamese Small and Medium Enterprises

Trang Phan

Subject: Business, Economics And Management, Economics Keywords: Credit constraints; Export; SMEs; Instrumental variable; Probit regression; Vietnam

Online: 18 May 2022 (10:35:32 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202408.1085.v1

Calibration for Improving the Medium‐Range Soil Forecast over Central Tibet: Effects of Objective Metrics’ Diversity

Yakai Guo, Baojun Yuan, Changliang Shao, Guanjun Niu, Dongmei Xu, Yong Gao

Subject: Engineering, Other Keywords: metrics diversity; Kling-Gupta efficiency; soil temperature modelling; spatial complexity; land surface parameters

Online: 14 August 2024 (14:53:42 CEST)

Show abstract| Download PDF| Supplementary Files| Share

Preprint ARTICLE | doi:10.20944/preprints202408.1520.v1

Analytical and Computer Modelling of Chaotic Advection of Stokes Flow Inside a Rectangular Cavity under Constant Velocities

Valentyn Sobchuk, Oleksandr Kurylko, Oleksandr Boryseiko, Oleg Perehuda, Iryna Lebedyeva, Olena Vashchilina

Subject: Computer Science And Mathematics, Applied Mathematics Keywords: stokes flow; chaotic advection; mixing; rectangular cavity; computer modelling

Online: 21 August 2024 (07:39:58 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202403.1709.v1

A Lateral-Flow Device for the Rapid Detection of Scedosporium Species

Genna E. Davies, Christopher R. Thornton

Subject: Medicine And Pharmacology, Epidemiology And Infectious Diseases Keywords: Scedosporium; scedosporiosis; monoclonal antibody; biomarker; lateral-flow device; enzyme-linked immunosorbent assay

Online: 28 March 2024 (06:56:41 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202207.0288.v1

Design, Construction and Characterization of Sealed Tube Medium Power CO₂ Laser System

Muddasir Naeem, Tayyab Imran, Mukhtar Hussain, Arshad Saleem Bhatti

Subject: Physical Sciences, Applied Physics Keywords: ZEMAX; Thermoelectric coolers; Flyback transformer; High tension pump source; Penetration depth

Online: 19 July 2022 (13:28:19 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202205.0382.v1

Aerodynamic Shape and Drag Scaling Laws of Flexible Fibre in Flowing Medium

Bohua Sun, Xiao-Lin Guo

Subject: Physical Sciences, Applied Physics Keywords: flexible fibre; flow medium; aerodynamic shape; drag; scaling laws

Online: 27 May 2022 (10:46:59 CEST)

Show abstract| Download PDF| Share

Preprint REVIEW | doi:10.20944/preprints201910.0337.v1

Low and Medium Carbon Advanced High-Strength Forging Steels for Automotive Applications

Koh-ichi Sugimoto, Tomohiko Hojo, Ashok Kumar Srivastava

Subject: Chemistry And Materials Science, Metals, Alloys And Metallurgy Keywords: advanced high-strength forging steel; hot-forging; microstructure; retained austenite characteristics; mechanical properties; applications

Online: 29 October 2019 (10:59:30 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201803.0225.v1

Selective Colorimetric Sensors for Cyanide and Acetate Ion in Partially Aqueous Medium

Divya Singhal, Neha Gupta, Ashok Kumar Singh

Subject: Chemistry And Materials Science, Analytical Chemistry Keywords: chemosensors; CN− selective sensor; test strip sensor

Online: 27 March 2018 (12:13:34 CEST)

Show abstract| Download PDF| Supplementary Files| Share

Preprint ARTICLE | doi:10.20944/preprints202404.0517.v1

Analysis of Immediate Effects of the COVID-19 Pandemic on Small and Medium-Sized Enterprises (SMEs) in Rwanda: Firm-Level Data Analysis

Emmanuel Munyemana, Joseph K. Mung’atu, Charles Ruranga

Subject: Business, Economics And Management, Econometrics And Statistics Keywords: wood; firm; COVID-19 and SMEs; regression models

Online: 8 April 2024 (08:46:54 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202407.1654.v1

Evaluation of Medium-Deep Geothermal Resources Based on Seismic Imaging Technology: A Case Study of the Midu Basin in Yunnan Province

Jie Li, Xuebin Zhang, Chao Xu, Chuan Li, Hui Tan, Ziye Yu, Yunpeng Zhang

Subject: Environmental And Earth Sciences, Geophysics And Geology Keywords: geothermal resources; seismic tomography imaging; velocity ratio; Midu basin; genesis mechanism

Online: 22 July 2024 (09:11:19 CEST)

Show abstract| Download PDF| Share

Preprint COMMUNICATION | doi:10.20944/preprints202107.0601.v1

MalaSelect: a Selective Culture Medium for Malassezia Species Isolation

Abdourahim Abdillah, Stéphane Ranque

Subject: Biology And Life Sciences, Biochemistry And Molecular Biology Keywords: Malassezia; selective culture medium; Rapamycin; isolation; polymicrobial samples.

Online: 27 July 2021 (11:29:17 CEST)

Show abstract| Download PDF| Share

Working Paper ARTICLE

Possible Lattice-Like Medium for Electron Pairing in La₂CuO₄

Tiege Zhou

Subject: Physical Sciences, Condensed Matter Physics Keywords: high temperature copper-oxide superconductors; time-dependent density functional theory; electron-pairing medium

Online: 10 July 2019 (10:29:23 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201906.0184.v1

Distillery Wastewater as a Sustainable Medium for Microalgae Production

Viviana Quintero-Dallos, Janet Bibiana García-Martínez, Jefferson Eduardo Contreras-Ropero, Crisostomo Barajas-Ferrerira, Andrés Fernando Barajas-Solano, Roberto Lavecchia, Antonio Zuorro

Subject: Engineering, Bioengineering Keywords: distillery wastewater; vinasse; heterotrophic cultures; biorefinery; Chlorella vulgaris

Online: 19 June 2019 (12:32:03 CEST)

Show abstract| Download PDF| Share

Preprint REVIEW | doi:10.20944/preprints202403.0110.v1

Human Attention Restoration, Flow, and Creativity

Teresa Phuong-Vy Pham, Thomas Sanocki

Subject: Social Sciences, Cognitive Science Keywords: attention; executive attention; attention restoration; attentional ecology; nature; flow; creativity

Online: 4 March 2024 (10:37:04 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202306.0422.v1

Digital Transformation Trends in Small, Medium and Large Enterprises in Austria and in Hungary

Andrea Katona, Zoltán Birkner, Erzsébet Péter

Subject: Business, Economics And Management, Other Keywords: Industry 4.0; corporate strategy; Industry 4.0 readiness; digital technology; industrial digitalisation

Online: 6 June 2023 (08:56:14 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202408.1068.v1

Effects of Prostaglandin E1 and Balloon Atrial Septostomy on Cerebral Blood Flow and Oxygenation in Newborns Diagnosed with Transposition of the Great Arteries

Manuela Cucerea, Maria-Livia Ognean, Alin-Constantin Pinzariu, Marta Simon, Laura Mihaela Suciu, Dana-Valentina Ghiga, Elena Moldovan, Mihaela Moscalu

Subject: Medicine And Pharmacology, Pediatrics, Perinatology And Child Health Keywords: dextro-transposition of the great arteries; prostaglandin E1; septostomy; crSO2; cFTOE; cerebral doppler ultrasound

Online: 14 August 2024 (14:42:57 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202408.0551.v2

VARS and HDMR Sensitivity Analysis of Groundwater Flow Modeling through an Alluvial Aquifer Subject to Tidal Effects

Javier Samper, Brais Sobral, Bruno Pisani, Alba Mon, Carlos López-Vázquez, F Javier Samper-Pilar

Subject: Environmental And Earth Sciences, Water Science And Technology Keywords: VARS; HDMR; Global sensitivity analysis; groundwater flow model; tidal effect; Sardas site

Online: 26 August 2024 (17:03:19 CEST)

Show abstract| Download PDF| Supplementary Files| Share

Preprint ARTICLE | doi:10.20944/preprints202403.0988.v1

New Insight into Laryngo-Tracheal Surgery: High-Flow Oxygen Therapy to Prevent Early Complications after Surgery

Beatrice Trabalza Marinucci, Silvia Fiorelli, Alessandra Siciliani, Cecilia Menna, Matteo Tiracorrendo, Domenico Massullo, Federico Venuta, Erino Angelo Rendina, Anna Maria Ciccone, Antonio D'Andrilli, Mohsen Ibrahim, Giulio Maurizi

Subject: Medicine And Pharmacology, Surgery Keywords: tracheal surgery; peri-operative management; High Flow Oxygen Therapy

Online: 18 March 2024 (10:00:04 CET)

Show abstract| Download PDF| Share

Background: Early postoperative airway management after laryngo-tracheal surgery is crucial. Acute respiratory failure due to glottis’ oedema may occur, requiring reintubation. This can prolong ventilatory assistance, jeopardizing the anastomosis. To date, only judicious steroid administration and fluid management are available to avoid more invasive procedures. High-Flow-Oxygen-Therapy(HFOT) is a noninvasive O2 support method providing humidification, warmed air, Positive-End-Expiratory-Pressure(AIRVO2). No data exist about HFOT use to prevent early complications after laryngo-tracheal surgery. Methods: Between Sept.2020-Sept.2022, 107 consecutive patients underwent laryngo-tracheal surgery received HFOT(Group A). Data and long-term results were compared with those of 80 patients operated between Sept.2018-Aug.2020(Group B), when HFOT was not available. All patients were operated in a single center. No pre- or post-operative settings changed, except for HFOT introduction. We analyzed and compared the risk for “delayed” reintubation (unexpected reintubation within the first 24-48 hours after extubating/laryngeal mask removal) in the two groups. Results: No patients reported HFOT-related adverse events. Control group(B) presented “delayed” reintubation in 37% (p= 0.027), Intensive Care Unit admission in 67%(p=0.005) and longer hospital stay(p=0.001) compared to HFOT group(A). Minor complications rate was 3% in both group and overall mortality was 0%. Re-stenosis was described in 4.6% of HFOT group, without a statistically significant difference (p=0.7006). Conclusions: Our study is the first to investigate HFOT use in patients undergoing laryngo-tracheal surgery, potentially representing a consistent innovation in the peri-operative management of these patients. With the limit of a retrospective series, we would suggest HFOT use for preventing post-operative reintubation rate, possibly reducing ICU admission and hospital stay.

Preprint ARTICLE | doi:10.20944/preprints202409.1243.v1

Research on the Influence of Matrix Shape on Percolation Threshold Values for Current Flow Conducted Using the Monte Carlo Simulation Method

Vitalii Bondariev, Pawel Okal, Przemyslaw Rogalski, Alexander Pogrebnjak, Pawel Zukowski

Subject: Chemistry And Materials Science, Nanotechnology Keywords: percolation; conductivity; nanocomposite; matrix; simulation

Online: 17 September 2024 (02:56:02 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202408.1863.v1

Exploring the Economic Resilience of Small and Medium Enterprises (SMEs) During Financial Crises

Harry Johnson, Olivia Roberts, George Wilson

Subject: Business, Economics And Management, Business And Management Keywords: Economic resilience; small and medium enterprises; financial management; innovation; leadership; government support; social capital

Online: 26 August 2024 (15:33:41 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202307.0318.v1

Material Point Simulation Method for Concrete Medium Fracture and Fragmentation under Blast Loading

Zheng Liu, Jun Liu, Xianqi Xie, Mengyang Zhen, Yue Wang, Chen Ou, Haowen Zheng

Subject: Engineering, Civil Engineering Keywords: blast loading; concrete medium; rate sensitivity; improved HJC concrete model; material point method

Online: 5 July 2023 (12:37:18 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202101.0434.v1

Formation of Nickel(II)Porphyrin and Its Interaction with DNA in Aqueous Medium

Ahsan Habib, Salma Serniabad, Mohammad Shamim Khan, Rokayea Islam, Mrittika Chakraborty, Aklima Nargis, Md Emran Quayum, Md Ashraful Alam, Valentina Rapozzi, Masaaki Tabata

Subject: Chemistry And Materials Science, Analytical Chemistry Keywords: Speciation of Ni2+; Kinetics and mechanism; Hydrogen bonding; 5,10,15,20-tetrakis(N-methylpyridium-4-yl)porphyrinatonickel(II) tetracation; Outside binding; Chemotherapeutic agents

Online: 22 January 2021 (08:42:47 CET)

Show abstract| Download PDF| Supplementary Files| Share

In this work, kinetics of the reaction between 5,10,15,20-tetrakis(N-methylpyridium-4-yl)porphyrin and Ni2+ species were investigated in aqueous solution at 25 ±1 ºC in I = 0.10 M (NaNO3). Speciation of Ni2+ was carried out in I = 0.10 M (NaNO3) in order to provide the distribution of the Ni2+ species with different solution pH. The experimental data have been compared with the speciation diagram constructed from the values of hydrolysis constants of Ni2+ ion. Speciation data showed that the hexaaquanickel(II), [Ni(H2O)6]2+, ions take place in hydrolysis reactions through formation of [Ni(OH2)6-n(OH)n]2-n species with solution pH. Based on the speciation of Ni2+ and pH dependent rate constants, rate expression can be written as: d[Ni(TMPyP)4+]/dt = (k1[Ni2+(aq)] + k2[Ni(OH)+(aq)] + k3[Ni(OH)2o(aq)] + k4[Ni(OH)3-(aq)])[H2TMPyP4+], where k1, k2, k3 and k4 were found to be k1 = (0.62 ± 0.22) × 10-2; k2 = (3.60 ± 0.40) × 10-2; k3 = (2.09 ± 0.52) × 10-2, k4 = (0.53 ± 0.04) × 10-2 M-1s-1 at 25 ±1 °C, respectively. Kinetic results showed that monohydroxo, [Ni(H2O)5(OH)]+, is the most reactive among the [Ni(OH2)6-n(OH)n]2-n species. The enhanced reactivity has been ascribed to the formation of hydrogen bonding between oxygen atom of hydroxyl group of the [Ni(H2O)5(OH)]+ species and the pyrrolic hydrogen atom of the [H2TMPyP]4+. The rate of formation of [Ni(II)TMPyP]4+ complex was to be 3.99 × 10-2 M-1s-1 in I = 0.10 M, NaNO3 (25 ± 1 ºC). Ionic strength effect on the reaction rate is suggested that the net charge of the tetracationic porphyrin is to be +3.6 on the basis of Brønsted-Bjerrum equation. The UV-Vis and fluorescence data revealed that [Ni(II)TMPyP]4+ and H2(TMPyP)4+ interact with DNA, and UV-Vis results suggest that Ni(II)-porphyrin and free base porphyrin interact with DNA via outside binding with self-stacking and intercalation, respectively. Mechanism of kinetics of formation of the [Ni(II)TMPyP]4+ complex in aqueous medium is discussed. An investigation of application of the [Ni(II)TMPyP]4+ complex along with other metalloporphyrins such as Zn2+-, Ru2+-, Pt2+-, [Au(III)TMPyP]5+ as anti-COVID-19 agents is now in progress under international collaboration.

Preprint ARTICLE | doi:10.20944/preprints201810.0576.v1

Financing MSMEs (Micro Small and Medium Enterprises) in Nigeria: Implications of Transaction Costs

Oluseye Ajuwon, Sylvanus Ikhide, Joseph Akotey

Subject: Business, Economics And Management, Finance Keywords: Micro Small and Medium Enterprises, Transaction costs, Small businesses, Credit accessibility

Online: 24 October 2018 (12:05:42 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202402.1399.v1

Biological Monitoring of Extracorporeal Photopheresis for Steroid Resistant Acute Graft versus Host Disease by a Short Culture Method and Flow Cytometry

Luca Pierelli, Anna Capalbo, Eleonora Ponte, Paola Iudicone, Stefano Spurio, Sara Morara, Roberta Battistini, Anna Proia

Subject: Medicine And Pharmacology, Hematology Keywords: graft versus host disease; extracorporeal photopheresis; T cell death; biological quality control

Online: 26 February 2024 (09:40:12 CET)

Show abstract| Download PDF| Share

Preprint COMMUNICATION | doi:10.20944/preprints202403.0304.v1

AFM Study of the Influence of Stopped Glycerol Flow in a Coil on Peroxidase Enzyme

Yuri D. Ivanov, Ivan D. Shumov, Andrey F. Kozlov, Anastasia A. Valueva, Maria O. Ershova, Irina A. Ivanova, Alexander N. Ableev, Vadim Y. Tatur, Andrei A. Lukyanitsa, Nina D. Ivanova, Vadim S. Ziborov

Subject: Biology And Life Sciences, Biophysics Keywords: horseradish peroxidase; glycerol; atomic force microscopy; enzyme aggregation

Online: 6 March 2024 (10:56:45 CET)

Show abstract| Download PDF| Share

Search Results

38613 articles found