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Preprint ARTICLE | doi:10.20944/preprints202404.1506.v1

Validity of LiPON Conductivity Determined by Impedance Spectroscopy

Alexander Rudy, Alena Novozhilova, Julia Egorova

Subject: Electrochemistry, Chemistry And Materials Science Keywords: ; solid electrolyte; impedance spectroscopy; absorption current; electric double layer; Debye length; drift conductivity ;

Online: 23 April 2024 (09:47:23 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.1208.v1

Cellulose, Rice Husk and Polyvinyl Acetate-Based Composite: Flame Retardancy and Fungi Growth Experimental Study

Sergio González-Serrud, Nacarí Marín-Calvo

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: recycled cellulose; rice husk waste; fire resistance; fungal growth; water absorption; density; natural fibers; resource sustainability; building sustainability

Online: 18 April 2024 (07:51:38 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.1147.v1

Polarization and Incident Angle Independent Multifunctional and Multiband Tunable THz Metasurface Based on VO₂

Rehmat Iqbal, Cao Jie, Ubaid ur Rahman Qureshi, Zia Ur Rehman, Naveed Jafar

Subject: Engineering, Other Keywords: Metasurface; Terahertz (THz); Polarization Conversion; Absorption; Polarization angle; vanadium dioxide (VO₂)

Online: 17 April 2024 (13:33:12 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0550.v1

Techno-Economic Evaluation on Solar-Assisted Post-Combustion CO₂ Capture in Hollow Fiber Membrane Contactors

Junkun Mu, Jinpeng Bi, Yuexia Lv, Yancai Su, Wei Zhao, Hui Zhang, Tingting Du, Fuzhao Li, Hongyang Zhou

Subject: Environmental And Earth Sciences, Sustainable Science And Technology Keywords: solar thermal energy; membrane gas absorption; hollow fiber membrane contactor; technical feasibility; economic assessment

Online: 9 April 2024 (07:19:49 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0192.v1

Explicit Numerical Study on Dynamic Behavior of Threadbar under Impact Loading

L.Y. Marulanda, J.A. Vallejos, J.I. Velásquez

Subject: Engineering, Mining And Mineral Processing Keywords: Rockbursts; Threadbar; Dynamic testing; Numerical modelling; energy absorption

Online: 2 April 2024 (10:26:04 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202403.1863.v1

Adjoint Solver-Based Analysis of Mouth-Tongue Morphologies on Vapor Deposition in the Upper Airway

Mohamed Talaat, Xiuhua Si, Jinxiang Xi

Subject: Engineering, Bioengineering Keywords: morphological effect; adjoint solver; shape sensitivity; computational fluid dynamics (CFD); mu-cus-tissue layer; vapor transport; wall absorption; Acetaldehyde; Benzene

Online: 29 March 2024 (13:16:42 CET)

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Preprint ARTICLE | doi:10.20944/preprints202403.1593.v1

Comparative Simulation of Plasmonic Nanostructures: Optical Response of Periodic Metal Nanostrip and Nanodisk Arrays on Mirror

Niloofar Ebrahimzadeh Esfahani, Jaroslav Kováč, Jr., Giuseppe Maruccio, Silvia Rizzato, Soňa Kováčová

Subject: Engineering, Electrical And Electronic Engineering Keywords: Nanodisk; nanostrip; plasmonic; field enhancement; absorption; scattering cross section; extinction cross section

Online: 26 March 2024 (11:54:48 CET)

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Preprint ARTICLE | doi:10.20944/preprints202403.1003.v1

Enhanced Energy Absorption in Bioinspired Combined TPMS-Gyroid and Walled TPMS-Gyroid Lattice Structure Manufactured via Fused Filament Fabrication (FFF)

Dawit Bogale Alemayehu, Masahiro Todoh

Subject: Engineering, Mechanical Engineering Keywords: Keywords; bio-inspired; gyroid lattice, Boolean subtraction; finite element analysis; plastic plateau; densification; energy absorption; relative density; size effect

Online: 18 March 2024 (10:39:43 CET)

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Preprint ARTICLE | doi:10.20944/preprints202403.1014.v1

Structural and Optical Characterization of Porous NiV2O6 Films Synthesized by Nebulizer Spray Pyrolysis for Photodetector Applications

Ahmed Kotbi, Islam Radaf, Ilham Hamdi Alaoui, Anna Cantaluppi, Andreas Zeinert, Abdelilah LAHMAR

Subject: Physical Sciences, Applied Physics Keywords: NiV2O6 thin films; Porous microstructure; Absorption coefficient; Energy gap; Photodetector

Online: 18 March 2024 (10:37:23 CET)

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Preprint ARTICLE | doi:10.20944/preprints202403.0937.v1

Acoustic properties of surfaces covered by multipole resonators

Nikolay Kanev

Subject: Physical Sciences, Acoustics Keywords: acoustic metasurface; impedance; tangential impedance; monopole; dipole; linear multipole; reflection coefficient; absorption coefficient; high order impedance boundary condition (HOIBC); homogenization

Online: 15 March 2024 (14:41:38 CET)

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

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

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

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

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

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Preprint ARTICLE | doi:10.20944/preprints202402.0803.v1

Use of Alkaline-Activated Energy Waste Raw Materials in Geopolymer Concrete

Marta Nalewajko, Michał Bołtryk

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: lightweight geopolymer concrete; aluminosilicate artificial aggregate; fly ashes; compressive strength of geopolymers; water absorption; bulk density

Online: 16 February 2024 (04:14:59 CET)

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Preprint ARTICLE | doi:10.20944/preprints202402.0806.v1

In Vivo Absorption and Lymphatic Bioavailability of DHA from Microalgal Oil according to Its Physical and Chemical Form of Vectorization

Leslie Couëdelo, Stéphanie Lennon, Hélène Abrous, Ikram Chamekh, Corentin Bouju, Hugues Griffon, Carole Vaysse, Lionel Larvol, Gildas Breton

Subject: Biology And Life Sciences, Life Sciences Keywords: fatty acid vectorization; lymph; enterocyte; lipids; microalgal oil; long chain omega-3; bioavailability; PUFA absorption; chylomicrons

Online: 14 February 2024 (11:28:24 CET)

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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)

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Preprint ARTICLE | doi:10.20944/preprints202401.2190.v1

Mechanical Properties of Lattice Structures With a Central Cube: Experiments and Simulations

Shuai Guo, Yuwei Ma, Peng Liu, Yang Chen

Subject: Engineering, Mechanical Engineering Keywords: Lattice structure; Energy absorption; Additive manufacturing; Printing defects; Finite element model

Online: 31 January 2024 (09:25:36 CET)

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Preprint ARTICLE | doi:10.20944/preprints202401.1966.v1

Transient Response of an Inﬁnite Isotropic Magneto-Electro-Elastic Material with Multiple Axisymmetric Planar Cracks

Alireza Vahdati, Mehdi Salehi, Meisam Vahabi, Aazam Ghassemi, Javad Jafari Fesharaki

Subject: Engineering, Mechanical Engineering Keywords: magneto-electro-elastic material; Transient loads; Axisymmetric planar cracks; Generalized dynamic intensity factors; Dislocation.

Online: 29 January 2024 (09:51:07 CET)

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Preprint ARTICLE | doi:10.20944/preprints202401.1669.v1

Shock Absorption Capacity of High-Performance Polymers for Dental Implant Prosthesis: In Vitro Study

Maria Menini, Francesca Delucchi, Francesco Bagnasco, Domenico Baldi, Luigi Canullo, Paolo Setti, Marco Migliorati, Paolo Pesce

Subject: Medicine And Pharmacology, Dentistry And Oral Surgery Keywords: dental implants; shock absorption; high-performance polymers; polyetherketoneketone

Online: 23 January 2024 (10:00:15 CET)

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Preprint ARTICLE | doi:10.20944/preprints202401.1541.v1

Sound-Absorbing, Thermal-Insulating Material Based on Poly (methylsiloxane) Xerogel and Cellulose Nanofibers

Daiji Katsura, Tetsuya Maeda, Kazuyoshi Kanamori, Takashi Yamamoto, Joji Ohshita

Subject: Engineering, Automotive Engineering Keywords: porous material; sound absorption; thermal insulation; heat insulation; poly(methylsiloxane) xerogel; cellulose nanofiber; microstructure modeling; homogenization method

Online: 22 January 2024 (04:36:59 CET)

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Preprint ARTICLE | doi:10.20944/preprints202401.1547.v1

Electrical Conductivity, EMI Absorption Shielding Performance, Curing Process and Mechanical Properties of Rubber Composites

Ján Kruželák, Andrea Kvasničáková, Michaela Džuganová, Rastislav Dosoudil, Ivan Hudec, Henrich Krump

Subject: Chemistry And Materials Science, Polymers And Plastics Keywords: rubber; manganese-zinc ferrite; nickel-zinc ferrite; carbon black; carbon fibers; electromagnetic absorption shielding

Online: 22 January 2024 (04:29:44 CET)

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Preprint ARTICLE | doi:10.20944/preprints202401.1234.v1

High-Resolution Nitrogen Dioxide Measurements from Airborne Fiber Imaging Spectrometer over Tangshan, China

Xiaoli Zhang, Liang Xi, Haijin Zhou, Wei Wang, Zhen Chang, Fuqi Si, Yu Wang

Subject: Environmental And Earth Sciences, Environmental Science Keywords: airborne; differential optical absorption spectroscopy (DOAS); imaging differential absorption spectrometer; NO2

Online: 16 January 2024 (12:34:10 CET)

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Preprint REVIEW | doi:10.20944/preprints202401.1066.v1

Toxicity Tolerance in the Carcinogenesis of Environmental Cadmium

Aleksandar Cirovic, Soisungwan Satarug

Subject: Public Health And Healthcare, Public, Environmental And Occupational Health Keywords: cadmium; cancer; cell transformation; copper; intestinal absorption; iron store status; zinc transporters

Online: 15 January 2024 (10:27:42 CET)

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Preprint ARTICLE | doi:10.20944/preprints202401.0793.v1

Dynamics of Absorption and Concentration of Anthracene in Radishes

Haruki Shimazu

Subject: Environmental And Earth Sciences, Environmental Science Keywords: anthracene; radish; absorption; concentration

Online: 12 January 2024 (06:12:05 CET)

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Preprint ARTICLE | doi:10.20944/preprints202401.0416.v1

Analysis of the Optical Properties and Electronic Structure of Semiconductors of the Cu2NiXS4 (X = Si, GE, Sn) Family as New Promising Materials for Optoelectronic Devices

Dilshod Nematov

Subject: Physical Sciences, Condensed Matter Physics Keywords: bandgap; kesterites; optical properties; solar cells; absorption coefficient; dielectric constant; photoelectric applications

Online: 4 January 2024 (15:15:43 CET)

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Preprint ARTICLE | doi:10.20944/preprints202401.0201.v1

Improvement in the Hydrogen Storage Properties of MgH2 by Adding NaAlH4

Young Jun Kwak, Myoung Youp Song, Ki-Tae Lee

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: hydrogen storage; MgH2; NaAlH4; decomposition temperature; hydrogen absorption; release rates

Online: 3 January 2024 (07:45:59 CET)

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Preprint ARTICLE | doi:10.20944/preprints202312.2147.v1

Enhancing the Performance for Chilled Ammonia Carbon Dioxide Capture by Use of Crystallizerconfiguration: Thermodynamic Assessment

Nnadikwe johnson, Akuchie Chukwuma justin, , Onuabuchi Azunna

Subject: Engineering, Energy And Fuel Technology Keywords: CO₂; efficiency; chilled; ammonia; capturing; absorption

Online: 28 December 2023 (05:18:33 CET)

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Preprint ARTICLE | doi:10.20944/preprints202312.1671.v1

The Solid-Phase Transition of Carbapenem CS-023 Polymorphs and the Change of Helicity Observed in the Transition

Shinji Matsuura, Koichi Igarashi, Masayuki Azuma, Hiroshi Ooshima

Subject: Engineering, Chemical Engineering Keywords: antibiotics; carbapenem; pharmaceutical crystallization; polymorphism of carbapenem crystal; solid phase polymorphic transition; helicity change, over-absorption of water of anhydrous crystal

Online: 21 December 2023 (16:08:18 CET)

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Preprint ARTICLE | doi:10.20944/preprints202312.1627.v1

Natural Gas Sweetening via Membrane-Assisted Gas Absorption. Part 1: A Hollow-Fiber Unit with MDEA-Based Absorbent

Anton Petukhov, Artem Atlaskin, Kirill Smorodin, Mariia Atlaskina, Dmitriy Mikhailovich Zarubin, Nikita S. Tsivkovsky, Sergey Kryuchkov, Anna Stepakova, Andrey Vorotyntsev, Olga Kazarina, Sergey Suvorov, Ekaterina Stepanova, Ilya Vorotyntsev

Subject: Chemistry And Materials Science, Chemical Engineering Keywords: membrane-assisted gas absorption; natural gas processing; sweetening; gas separation; hollow fibers

Online: 21 December 2023 (08:37:38 CET)

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Preprint ARTICLE | doi:10.20944/preprints202312.0697.v1

Sustainable polypropylene-based composites with agro-waste fillers: thermal, morphological, mechanical properties, and dimensional stability.

Tatiana Zhiltsova, Jéssica Campos, Andreia Costa, Mónica S. A. Oliveira

Subject: Engineering, Mechanical Engineering Keywords: natural fibre-reinforced composites; olive pits; rice husk; non-destructive morphology assessment; polypropylene; short-term water absorption

Online: 11 December 2023 (11:52:34 CET)

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Preprint REVIEW | doi:10.20944/preprints202312.0352.v1

Recent Trends on Polymeric Foams and Porous Structures for Emi Shielding Applications

Marcelo Antunes

Subject: Chemistry And Materials Science, Polymers And Plastics Keywords: polymeric foams; porous structures; microcellular foams; 3D printing; carbon-based nanofillers; nanohybrids; EMI shielding; EM wave absorption

Online: 6 December 2023 (10:17:56 CET)

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Polymer-based (nano)composite foams, especially those having a microcellular structure, containing suitable conductive (nano)fillers, have been shown to act as good shielding materials, hence coming as promising to act as shields in electronic devices, limiting/avoiding electromagnetic interference (EMI) pollution. Nevertheless, due to their high (micro)structural complexity, related to their multiphase nature, there is still a lot of unawareness behind the shielding mechanisms acting in these materials, coming as a necessity to study their microstructure-cellular/porous structure-properties relations, especially in terms of their electrical conductivity and EMI shielding efficiency (EMI SE). To target and control the electrical conductivity through a controlled distribution/dispersion of conductive nanofillers, single or combined (nanohybrids), as there is a direct relation between electrical conductivity and EMI SE, as well as the main EMI shielding mechanisms working on the developed microcellular structure of the foams, which are expected to be absorption-dominated or absorption/multiple reflection-based, are two of the main objectives when combining polymer foaming with the addition of conductive nanofillers. The present review work considers the recent developments and trends on polymer-based foams containing conductive nanofillers, especially carbon-based such as carbon nanotubes or graphene-based materials, as well as similar porous structures created using trending technologies such as 3D printing, for EMI shielding applications. It is divided in different sections, starting with the strategy of microcellular foaming to develop polymer-based foams with enhanced EMI shielding characteristics, especially focusing on technologies and methods using supercritical CO2 (sCO2); continuing with the use of polymer foams as templates to synthesize carbon foams with improved EMI shielding performance for high use temperature applications; the recent strategy of combining different functional (nano)fillers to create hybrid nanofillers/nanohybrids to be used at lower amounts as conductive fillers in polymer foams; the control and selective distribution of the nanofillers in terms of favoring the formation of a more effective conductive network and hence promote the enhancement of the EMI SE; the very recent use of computational approaches to tailor the EMI shielding properties of composite foams; and the very trending possibility of creating cellular components with varied porous structures from these materials using 3D printing; to finish, some future perspectives are discussed.

Preprint ARTICLE | doi:10.20944/preprints202311.0425.v1

Magnetic Anisotropy Tailoring by 5d Doping in (Fe,Co)₅SiB₂ Alloys

Diana Benea

Subject: Chemistry And Materials Science, Metals, Alloys And Metallurgy Keywords: ab-initio calculations; magneto-crystalline anisotropy; magnetization; rare earth free magnets

Online: 7 November 2023 (11:27:02 CET)

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Preprint ARTICLE | doi:10.20944/preprints202310.1486.v1

Antiviral Efficacy of Heparan Sulfate and Enoxaparin Sodium against SARS-CoV-2: An In-Vitro/in-Silico Model

Virginia Fuochi, Salvatore Furnari, Giuseppe Floresta, Vincenzo Patamia, Chiara Zagni, Filippo Drago, Antonio Rescifina, Pio Maria Furneri

Subject: Medicine And Pharmacology, Epidemiology And Infectious Diseases Keywords: heparan sulfate; enoxaparin; coronavirus; SARS-CoV-2; ACE2, absorption inhibition; molecular docking

Online: 24 October 2023 (08:12:50 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202310.1219.v1

Recycling of Industrial Waste as Soil Binding Additives—Effects on Soil Mechanical and Hydraulic Properties during Its Stabilisation Prior to Road Construction

Ksawery Kuligowski, Witold Waciński, Marek Zając, Włodzimierz Urbaniak, Małgorzata Olejarczyk, Waldemar Cyske, Paweł Kazimierski, Robert Tylingo, Szymon Mania, Adam Cenian

Subject: Environmental And Earth Sciences, Soil Science Keywords: road construction; soil stabilization; soil binders; soil compressive strength; soil capillary forces; frost resistance; waste additives; industrial waste; pyrolytic wax; emulsions; soil water absorption

Online: 20 October 2023 (11:01:31 CEST)

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In road construction, before applying an asphalt or concrete surface, the ground must be compacted and stabilized. There are two basic methods of soil stabilization: in situ and in a stationary node (ex-situ). The method of performing stabilization in place (in-situ) is the most frequently used method due to its convenience and lower price. The most popular type of binder for stabilization is a hydraulic binder (most often cement and various ashes). Such stabilization is performed at a depth of 10-50 cm, achieving the desired load-bearing parameters. In order to improve them, various chemical additives for stabilization are often used, such as ion exchange compounds, additives based on sulfuric acid, additives based on vinyl polymers or even organic additives using lignosulfonates. However, the use of such additives is associated with much greater costs and environmental burden, resulting in seeking for cheaper and equally effective alternatives. The win-win situation would be for instance recycling the problematic waste-based materials that on one hand are landfilled or impossible to recycle and on the other hand cause problems for the waste producers. Therefore, an interesting issue is the production of stabilization additives from various types of waste materials. As a result of the extensive testing of various waste-based materials blends with soil, the mechanical (compressive strength after 7 and 28 days) and hydraulic (capillary rise, water absorption, frost resistance) soil properties were measured. The optimization process led to obtaining additives compositions ensuring the best strengthening and sealing properties. These were for sandy soil: Pure foil (wax emulsion), Pure foil (wax emulsion) + waste sulphuric acid, RDF from waste tires (wax emulsion), Pure foil (wax emulsion) + “by-pass” waste ash + NaOHx2 and for clayey soil: Pure foil (wax emulsion) + NaOH, Pure foil (wax emulsion) + waste sulphuric acid, Tequant, Pure foil (wax emulsion).

Preprint ARTICLE | doi:10.20944/preprints202310.1287.v1

Innovations in Electrochemical Sensors for Lead Ion Detection: Applications in Wastewater Treatment and Cytotoxicity Assessment

Morris Kamel, Gehad Abd El-Fatah, Mohamed Zaky, Amal Zaher, Ahmed Farghali, Sarah I. Othman, Ahmed Allam, Hassan Ahmed Rudayni, Mohamed E. M. Hassouna, Rehab Mahmoud

Subject: Chemistry And Materials Science, Chemical Engineering Keywords: lead ions (Pb+2); Zn-Fe LDH/PANI; Carbon paste electrode (CPE); differential pulse voltammetry (DPV); Zn/Mg/Fe LDH; Atomic absorption spectrophotometer (ASS); cytotoxicity

Online: 19 October 2023 (13:38:55 CEST)

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The requirement for developing tools capable of detecting and monitoring heavy metals (HMs) has recently taken on more significance due to worries about their toxic effect on human health and aquatic habitats. In this study, a simple electrochemical sensing carbon paste electrode (CPE) based on composite of Zinc/Iron layered double hydroxide (LDH) and polyaniline (PANI) was developed for the determination of lead ions in aquatic solutions. For this purpose, Zn-Fe LDH/PANI was prepared and characterized by Fourier transform infrared (FTIR), X ray diffraction (XRD), and scanning electron microscopy (SEM). Modified carbon electrode based Zn-Fe LDH/PANI was electrochemically characterized compared with unmodified electrode in FCN as a redox probe using cyclic voltammetry (CV). Thus, Zn-Fe LDH/PANI was utilized as sensing material for the electrochemical determination of lead ions using differential pulse voltammetry (DPV). Zn-Fe LDH/PANI/CPE show limits of detection (LOD) and quantification (LOQ) of 167.8 nM and 559.4 nM, respectively. Zn/Mg/Fe LDH was prepared using co-precipitation method and characterized by XRD, FTIR, SEM and BET, used for removal of Pb+2 ions. Removal process was investigated at different conditions as pH, metal ion concentrations, starting adsorbent dose at first and contact time. Zn/Mg/Fe LDH was evaluated as an effective adsorbent material for lead ions elimination in aquatic solutions, with capacity of adsorption 700 mg/g. The elimination of lead ions on Zn/Mg/Fe LDH fitted the pseudo first-order kinetics model and the isotherm was matched with Langmuir model. Studies revealed that the ideal removal conditions were pH = 5.0, an adsorbent mass of 0.05 g, and 20 ml of 50 ppm metal ion concentration at 60 min. The Zn-Fe LDH/PANI composite also showed potential anti-cancer properties against lung cancer cells (A549) while maintaining safety for normal lung fibroblast cells (WI-38). Collectively, advancements in electrochemical sensors offer promising solutions for lead ion detection, with wide-reaching applications in wastewater treatment and cytotoxicity assessment. These innovations have the potential to enhance environmental monitoring and public health safety.

Preprint ARTICLE | doi:10.20944/preprints202310.0138.v1

Multi-Frequency Differential Absorption LIDAR (DIAL) System for Aerosol and Cloud Retrievals of CO2/H2O and CH4/H2O

Jasper R Stroud, Gerd A Wagner, David F Plusquellic

Subject: Environmental And Earth Sciences, Atmospheric Science And Meteorology Keywords: DIAL; differential absorption lidar; IPDA; integrated path differential absorption LIDAR; cloud aerosol retrievals

Online: 3 October 2023 (09:35:01 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202309.1568.v1

Novel Testing Method for Absorbing Materials with Comparison of Efficiency and Gain

Feng Xu

Subject: Engineering, Electrical And Electronic Engineering Keywords: OTA antenna test; wave absorption; stealth material

Online: 25 September 2023 (05:14:18 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202309.1544.v1

Graded Triply Periodic Minimal Surface Structures with Lightweight, High-Strength and Sound Absorption Produced by Laser Powder Bed Fusion

Mingkang Zhang, Chang Liu, Mingjian Deng, Yuhao Li, Jinwei Li, Di Wang

Subject: Physical Sciences, Acoustics Keywords: triply periodic minimal surface; porous structure; laser powder bed fusion; graded structure; sound absorption

Online: 25 September 2023 (04:47:37 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202309.1310.v1

Finite Element Analysis of Cold-Formed Steel Stud Wall Subjected to Blast Loading and Validation Using Artificial Neural Network and Response Surface Methodology

Vengadesh Subramanian S.A., Umamaheswari Nambiappan

Subject: Engineering, Civil Engineering Keywords: cold-formed steel; blast load; stud wall; strain energy; artificial neural network (ANN); energy absorption

Online: 20 September 2023 (04:44:01 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202309.1265.v1

Predictive Modeling and CIGS Integration for Multi-Junction Solar Cell Efficiency Enhancement

Ziani Zakarya, Mahdad Moustafa Yassine, Baghdadli Tewfik, Sekkal Mohammed Chakib, Bessenouci Mohammed Zakaria, Ghellai Nassera

Subject: Engineering, Other Keywords: Multijunction solar cells; IIIV semiconductors; TCAD simulation; cell optimization; predictive profiling; CIGS absorbers; spectral utilization; currentvoltage characteristics; external quantum efficiency; GaAs replacement; bottom junction; thin films; high efficiency; photovoltaics; epitaxial growth; stacked junctions; light absorption

Online: 19 September 2023 (07:48:35 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202309.1008.v1

Tunable Helmholtz Resonators using Multiple Necks

Nikolaos M. Papadakis, Georgios E. Stavroulakis

Subject: Physical Sciences, Acoustics Keywords: Helmholtz resonator; multi-neck Helmholtz resonator; sound absorber; architectural acoustics; room acoustics; musical acoustics; finite element method; sound absorption; acoustic transmission

Online: 15 September 2023 (03:59:00 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202309.1007.v1

Flux Growth and Characterization of Bulk InVO4 Crystals

Olesia Voloshyna, Mikhail V. Gorbunov, Daria Mikhailova, Andrey Maljuk, Silvia Seiro, Bernd Büchner

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: flux-growth; indium vanadate; XANES (X-ray absorption near edge spectroscopy); EXAFS (extended X-ray absorption fine structure)

Online: 14 September 2023 (11:43:28 CEST)

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Preprint REVIEW | doi:10.20944/preprints202309.0668.v1

Physiological Functions of Carbon Dots and Their Applications in Agriculture Production

Guohui Li, Jiwei Xu, Ke Xu

Subject: Biology And Life Sciences, Agricultural Science And Agronomy Keywords: photosynthesis; nutrient and water absorption; abiotic stress resistance; yield; biosensor

Online: 11 September 2023 (10:11:28 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202309.0264.v1

Optimization of the ANN model for Energy Consumption Prediction of Direct Fired Absorption Chiller for a Short-Term

Goopyo Hong, Namchul Seong

Subject: Engineering, Architecture, Building And Construction Keywords: ANN; energy consumption; optimization; direct fired absorption chiller; validation

Online: 5 September 2023 (11:28:53 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202308.2097.v1

Multivariate Analysis for Prediction of Splitting Tensile Strength in Concrete Paving Blocks

Vinicio Ramiro Benalcázar-Rojas, Wilman Jenny Yambay-Vallejo, Erick Patricio Herrera-Granda

Subject: Engineering, Industrial And Manufacturing Engineering Keywords: Prediction of tensile splitting strength; quality in concrete paving blocks; density of the fresh paving block; water absorption of concrete paving blocks; weight of the fresh paving blocks

Online: 31 August 2023 (09:33:10 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202308.1593.v1

Cubic Nonlinearity of Graphene-Oxide Monolayer

Tikaram Neupane, Uma Poudyal, Bagher Tabibi, Wan-joong Kim, Felix Jaetae Seo

Subject: Physical Sciences, Optics And Photonics Keywords: One-photon; two-photon transition; Atomic layer; Nonlinear absorption; Nonlinear refraction

Online: 23 August 2023 (09:44:25 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202308.1397.v1

Vibrational Effects on the Acoustic Performance of Multi-Layered Micro-Perforated Metamaterials

Cédric Maury, Teresa Bravo

Subject: Engineering, Mechanical Engineering Keywords: sound absorption; micro-perforates; panels vibration; global optimization

Online: 21 August 2023 (09:49:57 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202308.1352.v1

Oral Iron Absorption of Ferric Citrate Hydrate and Hepcidin-25 in Hemodialysis Patients: A Prospective, Multicenter, Observational Riona-Oral Iron Absorption Trial

Naohisa Tomosugi, Yoshitaka Koshino, Chie Ogawa, Kunimi Maeda, Noriaki Shimada, Kimio Tomita, Shoichiro Daimon, Tsutomu Shikano, Kazuyuki Ryu, Toru Takatani, Kazuya Sakamoto, Satonori Ueyama, Daisuke Nagasaku, Masato Nakamura, Shibun Ra, Masataka Nishimura, Chieko Takagi, Yoji Ishii, Noritoshi Kudo, Shinsuke Takechi, Takashi Ishizu, Takamoto Yanagawa, Masamichi Fukuda, Yutaka Nitta, Takayuki Yamaoka, Taku Saito, Suzuko Imayoshi, Momoyo Omata, Joji Oshima, Akira Onozaki, Hiroaki Ichihashi, Yasuhisa Matsushima, Hisahito Takae, Ryoichi Nakazawa, Koichi Ikeda, Masato Tsuboi, Keiko Konishi, Shouzaburo Kato, Maki Ooura, Masaki Koyama, Tsukasa Naganuma, Makoto Ogi, Shigeyuki Katayama, Toshiaki Okumura, Shigemi Kameda, Sayuri Shirai

Subject: Medicine And Pharmacology, Urology And Nephrology Keywords: oral iron absorption; ferric citrate hydrate; hemodialysis; hepcidin-25; iron shift

Online: 18 August 2023 (11:20:29 CEST)

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Preprint REVIEW | doi:10.20944/preprints202308.0298.v2

Absorption of Light in Vertical III-V Semiconductor Nanowires for Solar Cell and Photodetector Applications

Nicklas Anttu

Subject: Physical Sciences, Applied Physics Keywords: III-V semiconductor; nanowire; absorption; solar cell; photodetector

Online: 17 August 2023 (07:53:02 CEST)

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Preprint COMMUNICATION | doi:10.20944/preprints202308.1124.v1

An Optical Micro-nano fiber Sensor Monitoring Exhaled Carbon Dioxide Gas

Tuo Chen, Yuxia Song, Xue Wang, Shiya Zhang, Jian-Jun He, Mingyu Li

Subject: Physical Sciences, Optics And Photonics Keywords: respiratory carbon dioxide; absorption theory; micro-nano fiber; optical sensor

Online: 16 August 2023 (08:54:07 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202308.0920.v1

Agaricus bisporus Extract (H2Oslim^®) Exerts an Anti-obesity Effect in High-Fat Diet-Induced Obese C57BL/6N Mice by Inhibiting Pancreatic Lipase-Mediated Fat Absorption

Hyungkeun Kim, Young Eun Jeon, So Mi Kim, Jae In Jung, Donghyeon Ko, Eun Ji Kim

Subject: Biology And Life Sciences, Food Science And Technology Keywords: agaricus bisporus; chitosan; polysaccharide; lipid absorption; pancreatic lipase; obesity

Online: 11 August 2023 (09:36:31 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202308.0656.v1

Nonlinear Optical Absorption of Impurities in Hexagonal Quantum Wires: Electric and Magnetic Field Effects

Anna Sofía Giraldo-Neira, Tomas Sosa-Giraldo, Juan Alejandro Vinascos-Sánchez, Álvaro Luis Morales Aramburo, Carlos Alberto Duque Echeverri, Miguel Eduardo Mora-Ramos, Ricardo León Restrepo Arango

Subject: Physical Sciences, Condensed Matter Physics Keywords: intraband energy transitions; optical absorption coefficients; hexagonal quantum well wires; GaAs/AlGaAs; core/shell structure

Online: 8 August 2023 (11:20:23 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202308.0014.v2

Effects of Difluorophenyl Substituents on Structural, Redox, and Magnetic Properties of Blatter Radicals

Dmitry Gulyaev, Andrey Serykh, Evgeny Tretyakov, Anna Akyeva, Mikhail Syroeshkin, Dmitry Gorbunov, Svetlana Maltseva, Nina Gritsan, Galina Romanenko, Artem Bogomyakov

Subject: Chemistry And Materials Science, Electronic, Optical And Magnetic Materials Keywords: Blatter radicals; fluorinated organic compounds; electrochemically reversible processes; antiferromagnetically coupled chains; magneto-structural correlations

Online: 2 August 2023 (05:04:34 CEST)

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Preprint REVIEW | doi:10.20944/preprints202308.0090.v1

Graphs Defined on Rings: A Review

S Madhumitha, Sudev Naduvath

Subject: Computer Science And Mathematics, Discrete Mathematics And Combinatorics Keywords: Unitary Cayley Graphs; Euler Totient Cayley Graphs; Unitary Addition Cayley Graphs; Unit Graphs; Absorption Cayley graphs; Nilpotent Cayley Graphs; Zero-divisor Cayley Graphs; Mixed unitary Cayley Graphs; Divisor Cayley Graphs; Involutory Cayley Graphs; Quadratic Residue Cayley Graphs

Online: 2 August 2023 (02:24:55 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202307.1515.v1

Excited-State Dynamics Leading either to Triplet Formation or Coordinative Expansion following Photolysis of Cu(II)-5,10,15,20-meso-tetrakis(phenyl)porphyrin or Cu(II)-5,10,15,20-meso-tetrakis(N-methylpyridium-4-yl)porphyrin: A DFT, TD-DFT, Luminescence and Femtosecond Time-Resolved Absorbance Study

Ross McGarry, Lazaros Varvarezos, Mary T. Pryce, Conor Long

Subject: Chemistry And Materials Science, Inorganic And Nuclear Chemistry Keywords: Porphyrin; Copper; Photophysics; DFT; TD-DFT; Luminescence; Transient Absorption; Femptosecond

Online: 24 July 2023 (10:30:49 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202307.1488.v1

Theoretical Study of Structure and Photophysics of Homologous Series of Bis(arylydene)cycloalkanones

Roman O. Starostin, Alexandra Ya. Freidzon, Sergey P. Gromov

Subject: Chemistry And Materials Science, Theoretical Chemistry Keywords: bis(arylydene)cycloalkanone dyes; photophysical properties; photochemical properties; absorption; luminescence; trans-cis isomerization; quantum chemistry; density functional theory; potential energy surface; conical intersection

Online: 21 July 2023 (08:49:19 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202307.0629.v1

Quantity and Quality of Light on Growth and Pigment Content of Dunaliella sp. and Anabaena sp. Cultures and the Use of Their Absorption Spectra as a Proxy Method for Assessment

George N. Hotos

Subject: Biology And Life Sciences, Agricultural Science And Agronomy Keywords: Microalgae culture; Pigments; Absorption spectrum; Dunaliella; Anabaena

Online: 10 July 2023 (12:10:39 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202307.0483.v1

Photoswitchable Molecular Units with Tunable Non-Linear Optical Activity: A Theoretical Investigation

Aggelos Avramopoulos, Heribert Reis, Demeter Tzeli, Robert Zaleśny, Manthos Papadopoulos

Subject: Chemistry And Materials Science, Theoretical Chemistry Keywords: (Hyper)polarizability; Density Functional Theory; Molecular Switches; Photochromism; Two-Photon absorption; Dithienylethene; bis(ethylene-1,2-dithiolato; Excited-state Energy Transfer

Online: 7 July 2023 (10:49:58 CEST)

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A series of derivatives, involving two dithienylethene (DTE), groups, connected by several molecular linkers (bis(ethylene-1,2-dithiolato)Ni- (NiBDT), naphthalene, quasilinear oligothiophene chains) are investigated with the aid of computational quantum chemistry methods. This involves the computation of the second- and third-order nonlinear optical properties, i.e. molecular hyperpolarizabilities of the designed/selected derivatives. These properties can be efficiently controlled by DTE switches, in connection with light of appropriate frequency. We found that NiBDT, as a linker, is associated with a greater contrast, in comparison to naphthalene, between the first and second hyperpolarizabilities of the “open-open” and the “closed-closed” isomers. This is explained by invoking the low lying excited states of NiBDT. It has been found that the second hyperpolarizability can be used as an index, which follows the structural changes induced by photochromism. The two-photon absorption, which is related to the imaginary part of second hyperpolarizability, has also been investigated for the S0S1 transition. Furthermore, the intramolecular excited-state energy transfer (EET) is studied as well as the overlap between the absorption and emission spectra of the donor and acceptor groups of the molecules. The electronic coupling, VDA, between the donor and acceptor fragments, as well as the emission spectrum of the donor and the absorption spectrum of the acceptor have been computed, assuming a Förster type transfer mechanism. EET is a critical factor governing the photochromism. Two methods were used to compute VDA, one based on linear response and one based on the distributed multipole analysis (DMA); both techniques give very similar results for the dominating Coulomb contribution. For NiBDT as the linker a low VDA value has been computed. We found that VDA is affected by the molecular geometry. Our results clearly show that the linker strongly influences the communication between the open-closed DTE groups and thus, photochromism. The present computations show that full photochromism is attained in derivatives where two DTE groups are linked by a tetrathiophene chain, in agreement with experiment. The sensitivity of molecular linear and nonlinear optical properties upon photochromism can assist with the identification of the molecular isomers.

Preprint ARTICLE | doi:10.20944/preprints202306.1876.v1

Application of Successful EU Funds Absorption Models on Sustainable Regional Development

Marko Šostar, Vladimir Ristanović, Chamaru de Alwis

Subject: Business, Economics And Management, Business And Management Keywords: Sustainable regional development; EU funds; Development projects; Absorption

Online: 28 June 2023 (04:04:18 CEST)

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The research paper comprehensively and consistently addresses all relevant theoretical areas related to the topic and includes an extensive empirical analysis of the absorption of EU funds and their impact on the sustainable development of Croatia, Slovenia, Hungary, and Poland. The analysis aims to investigate the efficiency of the absorption of funds from the EU, the impact of these funds on regional development of countries, as well as the reasons for such impacts. The "Regional Development Model Based on EU Funds" was tested with the aim of applying the model to the Republic of Croatia, countries in the region, and other European countries to achieve a higher level of absorption of financial resources from the available EU funds. Data for the empirical analysis were collected using a highly structured survey questionnaire on a sample of 244 respondents involved in the preparation and implementation of EU-funded projects. The contribution of economic science in theoretical terms arises from the development of scientific knowledge and ideas about the importance of increasing the number of development projects that will increase the absorption of funds from the European Union, thereby increasing economic activities in Croatia and the region. The expected contribution of economic science in the applied sense is based on the formulation of the "Regional Development Model Based on EU Funds," which is based on the application of knowledge, good practices, and stakeholder experiences, considering relevant indicators from available sources. The greatest contribution is demonstrated through testing the "Regional Development Model Based on EU Funds," which is applicable to the Republic of Croatia, countries in the region, and other European countries over a longer period. Finally, research of the impact of EU funds on the regional development of recipient countries is considerably less represented and very modest, only in the "upswing" of systematic scientific research. The research aims to fill the gaps in research and encourage thinking of key stakeholders responsible for regional development, who should eventually realize the importance of defining a regional policy aimed at EU funds as a key to regional development and reducing regional disparities within countries.

Preprint ARTICLE | doi:10.20944/preprints202306.1594.v1

In Vivo Absorption Spectra as Predictors of Algal Biomass and Pigment Content of the Cultured Microalgae Amphidinium carterae, Isochrysis galbana, Nephroselmis sp. and Anabaena sp.

George N. Hotos, Vlasoula Bekiari

Subject: Biology And Life Sciences, Aquatic Science Keywords: Keywords microalgae; pigments; Amphidinium; Isochrysis; Nephroselmis; Anabaena; absorption spectrum.

Online: 22 June 2023 (10:48:04 CEST)

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Preprint COMMUNICATION | doi:10.20944/preprints202306.1416.v1

Behavior of C₇₀ Fullerene in a Binary Mixture of Xylene and Tetrahydrofuran

Urol K Makhmanov, Shaxboz A Esanov, Dostonbek T Sidigaliev, Kayyum N Musurmonov, Bobirjon A Aslonov, Tohirjon A Chuliev

Subject: Physical Sciences, Optics And Photonics Keywords: C70 fullerene; xylene/tetrahydrofuran; self-organization; refractive index; DLS; UV-Vis absorption; nanocluster

Online: 20 June 2023 (09:35:19 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202306.1261.v1

Angular patterns of nonlinear emission in dye water droplets stimulated by femtosecond laser pulse for LiDAR application

Yury E. Geints

Subject: Physical Sciences, Optics And Photonics Keywords: ultrashort laser pulse; water droplet; fluorescence; multiphoton absorption; plasma emission; angular diagram; remote diagnostics

Online: 16 June 2023 (16:24:57 CEST)

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Preprint REVIEW | doi:10.20944/preprints202306.1136.v1

Research Status and Future Perspectives of Low Dimensional Electromagnetic Wave Absorption Materials

Huaping Xu, Tao Tang, Zengming Man, Xiaofeng Wu, Haiqiang Zhao, Xiaohui Liang, Chuanying Li

Subject: Chemistry And Materials Science, Electronic, Optical And Magnetic Materials Keywords: electromagnetic wave absorption; attenuation mechanism; low-dimensional materials

Online: 15 June 2023 (12:00:25 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202306.0447.v1

Towards Resonantly Enhanced Acoustic Phonon-Exchange Magnon Interactions at THz Frequencies

Tudor-Gabriel Mocioi, Antonia Ghita, Vasily Temnov

Subject: Physical Sciences, Condensed Matter Physics Keywords: magneto-acoustics; magnetization dynamics; ferromagnetic resonance; exchange magnons; acoustic phonons; Landau-Lifshitz-Gilbert equations; ultrafast laser interaction with materials

Online: 6 June 2023 (11:34:20 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202306.0371.v1

Enhanced Electromagnetic Wave Absorption Properties of FeCo-C Alloy by Exploiting Metamaterial Structure

Tang Xuan Duong, Do Khanh Tung, Bui Xuan Khuyen, Nguyen Thi Ngoc Anh, Bui Son Tung, Vu Dinh Lam, Liangyao Chen, Haiyu Zheng, YoungPak Lee

Subject: Chemistry And Materials Science, Electronic, Optical And Magnetic Materials Keywords: metamaterials; broad-band absorption; iron-cobalt alloy; electromagnetic coupling

Online: 6 June 2023 (03:56:25 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202306.0324.v1

Porous Gold Nanoparticles: Thermal Stability, Optical Response and Support-Free Synthesis

Laura Juhász, Zoltán Erdélyi, Csaba Cserháti

Subject: Chemistry And Materials Science, Nanotechnology Keywords: porous gold nanoparticles; plasmons, optical absorption,; dewetting, dealloying; support-free nanoparticles

Online: 5 June 2023 (13:20:35 CEST)

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Preprint REVIEW | doi:10.20944/preprints202305.1764.v1

DC Circuit Breaker Evolution, Design, and Analysis

Mehdi Moradian, Tek Tjing Lie, Kosala Gunawardane

Subject: Engineering, Electrical And Electronic Engineering Keywords: DC circuit breaker; Mechanical DCCB; Sloid-state DCCB; Hybrid DCCB; DC Microgrids; DC circuit breaker topology; Metal oxide varistor; Surge absorption

Online: 25 May 2023 (08:21:18 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.1457.v1

A Quantitative Examination of the Efficiency of a Biogas-Based Cooling System in Rural Regions

Kenan SAKA

Subject: Engineering, Mechanical Engineering Keywords: Efficiency analysis; biogas-powered cooling system; energy and exergy analysis; small-scale plant; absorption cooling system; triple-effect; ECOP; animal species; methane content

Online: 22 May 2023 (03:43:46 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.0137.v1

Optical Window to Polarity of Electrolyte Solutions

Omar O'Mari, Valentine I. Vullev

Subject: Chemistry And Materials Science, Physical Chemistry Keywords: Stokes’ shift; dipole; absorption; fluorescence; refractometry

Online: 3 May 2023 (10:49:45 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.0012.v1

Non-muscle Myosin Type-II Localization in the Mouse Intestinal Villi is Altered by B-Type Natriuretic Peptide

Anteneh Addisu, Yunus E. Dogan, Darrice Montgomery, Leeyu Addisu, Abdel A Alli

Subject: Medicine And Pharmacology, Medicine And Pharmacology Keywords: Non-Muscle Myosin; BNP; GI epithelia; Apical junctional complex; Absorption

Online: 1 May 2023 (04:09:57 CEST)

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Our prior studies have shown that B type Natriuretic Peptide (BNP) decreases absorption from the gastrointestinal (GI) tract. Since non-muscle myosin-type II (NMM-II) is known to have a role in epithelial tight junction regulation, we aimed to test whether BNP has an effect on the localization and expression of NMM-II in the intestinal villi. We treated wild type mice with a 10 ng/g intravenous bolus of BNP followed by infusion of BNP at 1ng/g/minute vs. vehicle control. The mice were then euthanized and intestinal tissue isolated and sectioned. The tissue was immune-stained for NMM-II and examined using fluorescence microscopy. The tissue section not treated with antibody to NMM-II was used as a methodological control to evaluate the non-specific binding. Scanning electron micrographic images were taken to compare structural differences between the two groups. Western blotting was performed to compare the regional protein expression of NMM-II and associated proteins including smooth muscle actin, kinesin, and E cadherin in small intestinal tissue between BNP vs. vehicle infused mice. Fluorescence microscopy revealed markedly increased localization of NMM-II at the crypts and core of intestinal villi of the jejunum, ileum and colon of BNP treated mice compared to vehicle. Transmission electron microscopy revealed that the microvilli of BNP treated mice assumed the distinctive appearance of ‘relaxed’ microvilli compared to vehicle. Such decrease in contractility was previously shown to decrease para-cellular permeability of epithelia. Our observation indicates that BNP alters the localization of NMM-II in intestinal villi and makes the intestinal villi structures assume a state of decreased permeability of the apical junctional complex. Further characterization of this process and understanding the specific mediators involved could lead to the identification of novel therapeutic targets for various disease states such as heart failure and malabsorption.

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

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

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

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

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

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

Preprint ARTICLE | doi:10.20944/preprints202304.0289.v2

Numerical Analysis of SO₂ Absorption inside a Wet Scrubber

Amedeo Amoresano, Giuseppe Langella, Paolo Iodice, Silvia Roscioli

Subject: Engineering, Mechanical Engineering Keywords: Seawater scrubber; SOX; Absorption

Online: 29 April 2023 (02:47:05 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.1173.v1

Dyes Confinement in the Nano Scale and Converting Poly Vinyl Alcohol to be Optical-active Polymeric Nanocomposites with High Thermal Stability

Adil Alshoaibi

Subject: Physical Sciences, Other Keywords: Zn-Al-Green Dyes Nanohybrids; PVA-Zn-Al-Dyes nanocomposite; UV–Vis absorption spectra; Band gap; Scanning electron microscopy; Thermal analyses

Online: 28 April 2023 (11:08:48 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.1005.v1

Measurement of the Acoustic Relaxation Absorption Spectrum of CO₂ Using an Optical Fiber DBR Laser

Kun Shen, Jixian Yuan, Min Li, Xiaoyan Wen, Haifei Lu

Subject: Physical Sciences, Optics And Photonics Keywords: acoustic relaxation absorption; gas relaxation acoustics; ultrasonic sensor; DBR fiber laser; carbon dioxide detection

Online: 27 April 2023 (02:32:13 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.1001.v1

Physical Properties and pH Environment of Foam Dressing Containing Eclipta prostrata Leaf Extract and Gelatin

Sukhontha Hasatsri, Jariya Suthi, Nattaporn Siriwut, Onjira Charoensappakit

Subject: Chemistry And Materials Science, Biomaterials Keywords: Eclipta prostrata; gelatin; foam dressing; wound dressing; physical property; absorption; dehydration; pH environment

Online: 26 April 2023 (15:23:50 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.0965.v1

Luminescence Properties of Epitaxial Cu₂O Thin Films Electrodeposited on Metallic Substrates and Cu₂O Single Crystals

Laima Trinkler, Dajin Dai, Liuwen Chang, Mitch Ming Chi Chou, Tzu-Ying Wu, Jevgenijs Gabrusenoks, Dace Nilova, Rihards Ruska, Baiba Berzina, Ramunas Nedzinskas

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: cuprous oxide; single crystal; epitaxial thin films; electrodeposition; photoluminescence; optical absorption.

Online: 26 April 2023 (07:27:18 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.0894.v1

Investigation of Excited State Intramolecular Proton Transfer and Structural Dynamics in Bis-benzimidazole Derivative (BBM) Using Femtosecond Stimulated Raman Spectroscopy

Junhan Xie, Ziyu Wang, Ruixue Zhu, Jiaming Jiang, Tsu-Chien Weng, Yi Ren, Shuhua Han, Yifan Huang, Weimin Liu

Subject: Chemistry And Materials Science, Physical Chemistry Keywords: excited state intramolecular proton transfer; structural dynamics; transient absorption; femtosecond fluorescence up-conversion; femtosecond stimulated Raman spectroscopy

Online: 25 April 2023 (07:10:11 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.0890.v1

Investigation of Broadband Optical Nonlinear Absorption and Transient Dynamics in Orange IV Containing Azobenzene

Quanhua Wu, Rui Ruan, Xingxing Li, Yujie Zhao, Yang Li, Yu Fang, Yongqiang Chen, Quanying Wu, Yinglin Song, Xingzhi Wu

Subject: Physical Sciences, Optics And Photonics Keywords: Nonlinear optics; Z-scan; Transient absorption and refraction; Pump probe

Online: 25 April 2023 (05:40:29 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.0730.v1

Ultrafast Nonlinear Optical Activities of Near-Infrared Aza-BODIPY Derivatives

Can Ren, Shuyu Xiao, Yanyan Cui, Juguang Hu, Xiaodong Lin, Tingchao He

Subject: Physical Sciences, Optics And Photonics Keywords: Near infrared emission; Aza-Bodipy derivatives; Saturable absorption; Nonlinear refraction; Two-photon absorption

Online: 23 April 2023 (02:41:33 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202304.0569.v1

Development and Evaluation of Self-Microemulsifying Drug Delivery System for Improving Oral Absorption of Poorly Water-soluble Olaparib

Yong-Han Kim, Seong-Bo Kim, Se-Hui Choi, Thi-Thao-Linh Nguyen, Sung-Hoon Ahn, Kyung-Sun Moon, Kwan Hyung Cho, Taeyong Sim, Eun-Ji Heo, Sungtae Kim, Han-Gon Choi, Dong-Jin Jang

Subject: Medicine And Pharmacology, Medicine And Pharmacology Keywords: Olaparib; self-microemulsifying drug delivery system; microemulsion; solubility; dissolution; oral absorption

Online: 19 April 2023 (08:16:05 CEST)

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The purpose of this study is to develop and evaluate a self-microemulsifying drug delivery system (SMEDDS) to improve the oral absorption of poorly water-soluble Olaparib. Through the solubility test of Olaparib in various oils, surfactants and co-surfactants, pharmaceutical excipients for use in SMEDDS manufacturing were selected. Self-emulsifying regions were identified by mixing the selected materials at various ratios, and a pseudoternary phase diagram was constructed by synthesizing these results. Various physicochemical properties of microemulsion incorporating Olaparib were confirmed by investigating the particle morphology, particle size, zeta potential, drug content and stability. In addition, the improved dissolution and oral absorption of Olaparib were also confirmed through a dissolution test and a pharmacokinetic study. An optimal microemulsion was generated in the formulation of Capmul MCM EP/NF 10%, Labrasol 80% and PEG 400 10%. Fabricated nano-sized microemulsions were well-dispersed in aqueous solutions, and it was also confirmed that it was maintained well without any problems of either physical or chemical stability. The 5 min initial dissolution of Olaparib in fabricated formulations was improved by 10.6 times (pH1.2), 14.8 times (pH6.8) and 14.8 times (distilled water) compared to the values of Olaparib powder. The dissolution at 120min was 45.4±4.0%(pH1.2), 53.5±1.1% (pH6.8) and 58.1±1.00% (distilled water) in Olaparib powder but has been significantly improved by 1.7 times (74.8±1.9%), 1.6 times (84.2±0.3%) and 1.5 times (81.2±0.7%) in SMEDDS. Associated with the high dissolutions of Olaparib in fabricated microemulsions, the pharmacokinetic parameters were also greatly improved. The Cmax and AUCinf of Olaparib in the prepared microemulsion were increased 4.2- and 3.2-fold, respectively, compared to powder. Taken together with the results mentioned above, the microemulsion system could be an effective tool as an oral delivery formulation for Olaparib. Additionally, our results demonstrate that the SMEDDS systems comprising Capmul MCM, Labrasol and PEG 400 could be a useful option for improvement of several other poorly water-soluble drugs with physico-chemical properties similar to Olaparib.

Preprint ARTICLE | doi:10.20944/preprints202301.0170.v1

Self-Micellizing Solid Dispersion of Thymoquinone with Enhanced Biopharmaceutical and Nephroprotective Effects

Shimul Halder, Sanjida Afrose, Manik Chandra Shill, Nahid Sharmin, Patricia Prova Mollick, Madhabi Lata Shuma, Md. Abdul Muhit, S. M. Abdur Rahman

Subject: Medicine And Pharmacology, Pharmacology And Toxicology Keywords: biopharmaceutical; nephroprotective; oral absorption; self-micellizing solid dispersion; thymoquinone.

Online: 10 January 2023 (03:09:17 CET)

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Preprint BRIEF REPORT | doi:10.20944/preprints202211.0239.v2

Methylidyne Cavity Ring-Down Spectroscopy in a Microwave Plasma Discharge

László Nemes, Christian Parigger

Subject: Physical Sciences, Atomic And Molecular Physics Keywords: molecular spectroscopy; diatomic molecules; cavity ring-down spectroscopy; absorption spectroscopy; methylidyne; line strength data; plasma physics; astrophysics

Online: 19 December 2022 (02:45:09 CET)

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Preprint ARTICLE | doi:10.20944/preprints202211.0372.v1

Self-Micellizing Solid Dispersion of Thymoquinone with Enhanced Biopharmaceutical and Nephroprotective Effects

Shimul Halder, Sanjida Afrose, Manik Chandra Shill, Nahid Sharmin, Patricia Prova Mollick, Madhabi Lata Shuma, S. M. Abdur Rahman

Subject: Biology And Life Sciences, Food Science And Technology Keywords: biopharmaceutical; nephroprotective; oral absorption; self-micellizing solid dispersion; thymoquinone.

Online: 21 November 2022 (04:43:27 CET)

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Preprint REVIEW | doi:10.20944/preprints202209.0162.v1

Bi-substituted Ferrite Garnet Type Magneto-Optic Materials Studied at ESRI Nano-Fabrication Laboratories, ECU, Australia

Mohammad Nur-E-Alam, Mikhail Vasiliev, Kamal Alameh

Subject: Chemistry And Materials Science, Surfaces, Coatings And Films Keywords: Bi-substituted; RF magnetron; Sputtering; Annealing; Oxygen plasma treatment; Magneto-optic; Faraday rotation; Figure of merit; Hysteresis loop; Imaging; Sensing.

Online: 13 September 2022 (05:53:32 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202208.0538.v1

Evaluating Bagasse Ash as Partial Cement Replacement Material

Chala Basha, Amanuel Diriba, Habtamu Fekadu, Boki Tamiru, Abdi Biranu

Subject: Engineering, Civil Engineering Keywords: building materials; sugar cane bagasse; Portland cement; Concrete; water absorption

Online: 31 August 2022 (08:36:55 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202206.0037.v1

Comparison of the Mechanical Properties of Fiber Reinforced Shotcrete at Laboratory and On-Site Conditions

Ramiro Castellanos Castellón, Marcos G. Alberti, Jaime C. Galvez, José Vera-Agullo, Raul Pina-Zapardiel

Subject: Engineering, Civil Engineering Keywords: Fracture energy (GF); energy absorption capacity (E25mm); residual flexural strength(fRj); fibers

Online: 3 June 2022 (09:46:23 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202205.0387.v1

A New Method for Calculating Water Quality Parameters by Integrating Space-Ground Hyperspectral Data and Spectral-In situ Assay Data

Donghui Zhang, Lifu Zhang, Xuejian Sun, Yu Gao, Ziyue Lan, Yining Wang, Haoran Zhai, Jingru Li, Wei Wang, Maming Chen, Xusheng Li, Liang Hou, Hongliang Li

Subject: Environmental And Earth Sciences, Environmental Science Keywords: hyperspectral imager; UAV remote sensing; water quality monitoring; space-ground data; buoy spectrometer; water eutrophication; absorption characteristics

Online: 30 May 2022 (05:59:36 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202204.0229.v1

Thermodynamic Study of Solar Assisted Hybrid Cooling Systems With Consideration of Duration in Heat-Driven Processes

Zeyu Peng, Zeyu Li, Junquan Zeng, Jianting Yu

Subject: Engineering, Energy And Fuel Technology Keywords: Solar energy; Refrigeration; Absorption-compression; Energy saving; Thermodynamic model

Online: 26 April 2022 (06:03:27 CEST)

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Preprint REVIEW | doi:10.20944/preprints202204.0162.v1

Photoinduced Electron Transfer in Organized Assemblies. Case Studies

Antonio Santoro, Giovanni Bella, Ambra Maria Cancelliere, Scolastica Serroni, Giuliana Lazzaro, Sebastiano Campagna

Subject: Chemistry And Materials Science, Physical Chemistry Keywords: Electron transfer; artificial photosynthesis; supramolecular assemblies; Donor-bridge-acceptor system; transient absorption spectroscopy

Online: 18 April 2022 (09:29:09 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202203.0382.v1

The Characteristic of CFRP Laminates Related to Water Absorption Subjected to Tensile, Bending, and Compression

Sudarisman Sudarisman, Alfian Hidayat, Haniel Haniel, Muhammad Tiopan, Rela Adi Himarosa, Muhammad Akhsin Muflikhun

Subject: Engineering, Mechanical Engineering Keywords: CFRP; vacuum infusion; water absorption; tensile test; bending test; compressive test

Online: 29 March 2022 (12:22:53 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202203.0120.v1

Magnesium Butyrate Is a Readily Available Magnesium Source in Dairy Cow Nutrition

Bastiaan de Groot, Joan Edwards, Thomas Schonewille

Subject: Biology And Life Sciences, Animal Science, Veterinary Science And Zoology Keywords: magnesium; absorption; rumen; butyrate; volatile fatty acids

Online: 8 March 2022 (08:59:14 CET)

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Preprint ARTICLE | doi:10.20944/preprints202203.0116.v1

Mystical Experience

Johannes Bronkhorst

Subject: Social Sciences, Psychology Keywords: mysticism; experience; absorption

Online: 8 March 2022 (05:09:57 CET)

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Preprint ARTICLE | doi:10.20944/preprints202203.0065.v1

Dielectric Properties of Aqueous Solutions at Normal and High Dilutions

Sergey Vladimirovich Savel’ev, Ludmila Arkad’evna Morozova

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: radiothermal signals; radiobrightness temperature; normal and high dilution solutions; absorption coefficient; ion hydration shell; new dielectric properties; supramolecular interactions; dispersion

Online: 3 March 2022 (13:52:45 CET)

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Preprint DATA DESCRIPTOR | doi:10.20944/preprints202202.0305.v1

Theoretical Calculations and Analysis Method of the Physicochemical Properties of Phytochemicals to Predict Gastrointestinal Absorption

Luis A. Vélez, Yamixa Delgado, Yancy Ferrer-Acosta, Ivette J. Suárez-Arroyo, Priscilla Rodríguez, Daraishka Pérez

Subject: Biology And Life Sciences, Biochemistry And Molecular Biology Keywords: Physicochemical properties; Gastrointestinal absorption; Lipinski's rules; Veber's rules; Ghose's rules; Muegge's rules

Online: 24 February 2022 (08:35:30 CET)

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Preprint ARTICLE | doi:10.20944/preprints202202.0292.v1

Majorana Anyon Composites in Magneto-Photoluminescence Spectra of Natural Quantum Hall Puddles

Alexander. M. Mintairov, Dmitrii Lebedev, Alexei Vlasov, Steven Blundell

Subject: Physical Sciences, Condensed Matter Physics Keywords: quantum dots; magneto-photoluminescence; fractional quantum Hall effect; anyons; Majorana modes; topological quantum computing

Online: 23 February 2022 (12:12:12 CET)

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Preprint ARTICLE | doi:10.20944/preprints202201.0169.v1

Light Absorption Enhancement and Laser-Induced Damage Ability Improvement of AA 6061 with Non-porous Alumina /CdSe@Al₂O₃/SiO₂ Functional Gradient Films

Jiaheng Yin, Lihua Lu, Yaowen Cui, Yongzhi Cao, Yunlong Du

Subject: Chemistry And Materials Science, Metals, Alloys And Metallurgy Keywords: CdSe QDs; AA 6061; light absorption; laser ablation

Online: 12 January 2022 (13:50:07 CET)

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Preprint ARTICLE | doi:10.20944/preprints202112.0002.v1

Performance Study of Absorption Tower and Adsorption Reactor to Eliminate Ammonia Gas as Pollutant

Ikha Rasti Julia Sari, Januar Arif Fatkhurrahman, Yose Andriani

Subject: Biology And Life Sciences, Biochemistry And Molecular Biology Keywords: ammonia; emission control; saturation point; absorption tower; adsorption reactor

Online: 1 December 2021 (10:22:31 CET)

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Preprint ARTICLE | doi:10.20944/preprints202111.0114.v1

Channel Modeling for In-body Optical Wireless Communications

Stylianos E. Trevlakis, Alexandros-Apostolos A. Boulogeorgos, Nestor D. Chatzidiamantis, George K. Karagiannidis

Subject: Engineering, Electrical And Electronic Engineering Keywords: Absorption coefficient; biomedical engineering; fitting; machine learning; optical properties; pathloss; scattering coefficient.

Online: 5 November 2021 (10:38:49 CET)

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Preprint ARTICLE | doi:10.20944/preprints202111.0022.v1

Genotoxicity of PM2.5 and PM1.0 Particulates on Human Peripheral Blood Lymphocytes in Manila, Philippines

Ma. Katrina Gale Estonilo, Joedith Anne Cazeñas, Carlos Josef Villafuerte, Custer Deocaris, Gloriamaris Caraos, Gerardo Jose Robles, Maria Cecilia Galvez, Celia Asaad, Edgar Vallar

Subject: Environmental And Earth Sciences, Environmental Science Keywords: Particulate Matter; Genotoxicity; Peripheral Blood Lymphocytes; Atomic Absorption Spectroscopy; In-vitro Micronucleus Test

Online: 1 November 2021 (15:22:09 CET)

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Preprint ARTICLE | doi:10.20944/preprints202110.0427.v1

Role Played by Edge-Defects in the Optical Properties of Armchair Graphene Nanoribbons

Thi-Nga Do, Godfrey Gumbs, Danhong Huang, D. Hoi Bui, Po-Hsin Shih

Subject: Physical Sciences, Condensed Matter Physics Keywords: graphene nanoribbon; defects; absorption spectra

Online: 28 October 2021 (09:49:38 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202109.0395.v1

Absorption and Translocation of [14c]2,4-Dichlorophenoxyacetic Scid in Herbicide-tolerant Chromosome Substitution Lines of Gossypium Hirsutum L.

Loida M Perez, Ziming Yue, Sukumar Saha, Jeffrey F. D. Dean, Johnie N Jenkins, David M Stelly, Te Ming Tseng

Subject: Biology And Life Sciences, Plant Sciences Keywords: 2,4-D; upland cotton; chromosome substitution lines; herbicide tolerance; 2,4-D absorption and translocation

Online: 23 September 2021 (08:10:50 CEST)

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Preprint BRIEF REPORT | doi:10.20944/preprints202109.0121.v1

Transmission Spectra Analysis of Lanthanide Super Crystals for Application on Silicon Solar Cell Devices

Alexis Bullock, Marvin Clemmons

Subject: Chemistry And Materials Science, Nanotechnology Keywords: Inorganic Solar Cells; Absorption; Lanthanides; Transmission; Light waves

Online: 7 September 2021 (10:58:25 CEST)

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