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Preprint ARTICLE | doi:10.20944/preprints201807.0597.v1

A Polymer-Gel Eye-Phantom for 3D Fluorescent Imaging of Millimetre Radiation Beams

Leonard Luthjens, Tiantian Yao, John Warman

Subject: Chemistry And Materials Science, Polymers And Plastics Keywords: Keywords: Radiotherapy eye-phantom; radio-fluorogenic gel; x-ray beam imaging; 3D radiation imaging; polymer gel dosimetry.

Online: 30 July 2018 (15:41:48 CEST)

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Preprint REVIEW | doi:10.20944/preprints201805.0473.v1

Electron Microscopy and Spectroscopy in the Analysis of Friction and Wear Mechanisms

Quanshun Luo

Subject: Chemistry And Materials Science, Surfaces, Coatings And Films Keywords: electron microscopy; energy dispersive X-ray spectroscopy (EDX); electron energy loss spectroscopy (EELS); worn surface analysis; tribofilms

Online: 31 May 2018 (11:27:10 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202410.1888.v1

The Impact of Wetting and Drying Cycles on the Architecture and Complexity of Intra-Aggregate Soil Pores

Luiz F. Pires, Jocenei T.A. de Oliveira, José V. Gaspareto, Adolfo N.D. Posadas, André L. F. Lourenço

Subject: Environmental And Earth Sciences, Soil Science Keywords: pore connectivity; soil aggregate; soil pore system; soil management practices; soil tillage; multifractal analysis; X-ray Computed Tomography

Online: 24 October 2024 (10:28:02 CEST)

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Preprint REVIEW | doi:10.20944/preprints202410.1518.v1

Artificial Intelligence Assistive Non-Destructive Testing of Welding Joints: A Review

Dalila Say, Saeed Mian Qaisar, Moez Krichen, Salah Zidi

Subject: Computer Science And Mathematics, Computer Vision And Graphics Keywords: Non-destructive testing; Weld defects; Classification; Applications fields; X-ray imaging; Deep Learning; Machine Learning; Ensemble Learning; Algorithms

Online: 21 October 2024 (08:36:04 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202408.1641.v1

Geochemical Characteristics of Modern River-Sand and Its Bearing on the Mineral Exploration in the Manufahi Area, Timor-Leste

Vital Vilanova, Tomoyuki Ohtani, Satoru Kojima, Kazuma Yatabe, Elizario Moniz

Subject: Environmental And Earth Sciences, Geochemistry And Petrology Keywords: Manufahi area; Timor-Leste; river sands; X-ray fluorescence (XRF) analysis; geochemical anomaly; statistical analysis; mineralization; mineral exploration

Online: 23 August 2024 (09:07:38 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202405.1510.v1

Synthesis, Characterization, X-ray Molecular Structure, Antioxidant, Antifungal and Allelopathic Activity of a new Isonicotinate-derived meso-Tetraarylporphyrin

Nour Elhouda Dardouri, Soukhayna Hrichi, Pol Torres, Raja Chaâbane-Banaoues, Alessandro Sorrenti, Thierry Roisnel, Ilona Turowska-Tyrk, Hamouda Baba, Joaquim Crusats, Albert Moyano, Habib Nasri

Subject: Chemistry And Materials Science, Organic Chemistry Keywords: free base porphyrin; isonicotinic acid; X-ray molecular structure; UV-visible; fluorescence; antioxidant activity; antifungal activity; allelopathic activity

Online: 23 May 2024 (12:30:45 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202212.0572.v1

Structural and Dynamic Characterization of Candida boidinii Formate Dehydrogenase by High-Resolution X-ray Crystallography

Mehmet Gul, Busra Yuksel, Huri Bulut, Hasan DeMirci

Subject: Biology And Life Sciences, Biochemistry And Molecular Biology Keywords: formate dehydrogenase; Candida boidinii; protein engineering; X-ray crystallography; structural biology; structural dynamics; Turkish Light Source; Turkish DeLight.

Online: 30 December 2022 (08:03:07 CET)

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Preprint ARTICLE | doi:10.20944/preprints202111.0430.v1

Two Compounds of 1-((4-Bromothiophen-2-Yl)Methylene)-2-(Perfluorophenyl)Hydrazine, and 1-((4-Bromo-5-Methylthiophen-2-Yl)Methylene)-2-(Perfluorophenyl)Hydrazine and They Crystal, Molecular and Electronic Properties

Július Sivý, Dušan Bortňák, Daniel Végh, Erik Rakovský

Subject: Chemistry And Materials Science, Analytical Chemistry Keywords: Ab initio DFT/B3LYP/6-311G/Auto calculation; hydrazine; Hirshfeld surface; hydrogen interactions; single-crystal X-ray study

Online: 23 November 2021 (15:03:30 CET)

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Preprint ARTICLE | doi:10.20944/preprints202007.0406.v1

X-Ray Photoelectron Spectroscopy for Determining Interface Dipoles of Self-Assembled Monolayers

Thomas C. Taucher, Egbert Zojer

Subject: Physical Sciences, Condensed Matter Physics Keywords: x-ray photoelectron spectroscopy; XPS; self-assembled monolayer; SAM; collective electrostatic; band-structure calculation; density-functional theory; DFT

Online: 19 July 2020 (10:40:47 CEST)

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Working Paper ARTICLE

Ablation patterns in externally applied electric and magnetic fields

Jovan Maksimovic, Soon Hock Ng, Tomas Katkus, Nguyen Hoai An Le, James W. M. Chon, Bruce C C Cowie, Tao Yang, Yves Bellouard, Saulius Juodkazis

Subject: Chemistry And Materials Science, Nanotechnology Keywords: ablation; electric field; magnetic field; debris; femtosecond laser fabrication; Silicon; near edge X-ray absorption fine structure (NEXAFS)

Online: 16 January 2020 (11:08:18 CET)

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Preprint ARTICLE | doi:10.20944/preprints201907.0206.v1

Structural, Magnetic and Mössbauer Studies of Ga and Zr Doped Dy₂Fe_17-XZr_Xand Dy₂Fe₁₆Ga_1-xZr_x (x=0.00, 0.25, 0.50, 0.75, 1.00)

Jiba Nath Dahal, K. S. Syed Ali

Subject: Physical Sciences, Condensed Matter Physics Keywords: permanent magnetic materials; 2:17 intermetallic; X-ray diffraction; rietveld analysis; Mössbauer Spectroscopy; curie temperature; soft magnet; doping

Online: 17 July 2019 (11:14:08 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201812.0149.v1

Supramolecular Organogels Based on N-Benzyl, N’-Acylbispidinols

Alexey Medved'ko, Alexander Dalinger, Vyacheslav Nuriev, Vera Semashko, Andrei Filatov, Alexander Ezhov, Andrei Churakov, Judith A. K. Howard, Andrey Shiryaev, Alexander Baranchikov, Vladimir Ivanov, Sergey Vatsadze

Subject: Chemistry And Materials Science, Organic Chemistry Keywords: Organic nanomaterials, bispidines; supramolecular gels; SEM, TEM, AFM study; X-ray diffraction; FT IR-spectroscopy; ATR-spectroscopy; SAXS

Online: 12 December 2018 (13:06:31 CET)

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Preprint ARTICLE | doi:10.20944/preprints201807.0420.v1

On the Rehydration of Organic Layered Double Hydroxides to Form Graphene-LDH Nanocomposites

Eleonora Conterosito, Luca Palin, Diego Antonioli, Maria Pia Riccardi, Enrico Boccaleri, Maurizio Aceto, Marco Milanesio, Valentina Gianotti

Subject: Chemistry And Materials Science, Nanotechnology Keywords: layered double LDHs; graphene; mixed oxides; re-hydration; memory Effect; X-ray diffraction; Raman spectroscopy; scanning electron microscopy

Online: 23 July 2018 (12:02:37 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202407.1850.v1

Beta-Hydroxybutyric Acid as a Template for the X-ray Powder Diffraction Analysis of Gamma-Hydroxybutyric Acid

Domenica Marabello, Carlo Canepa, Alma Cioci, Paola Benzi

Subject: Chemistry And Materials Science, Other Keywords: X-ray powder diffraction; non-destructive analysis; spiked beverages; γ -hydroxybutyric acid (GHB); β -hydroxybutyric acid (BHB); drink analysis

Online: 24 July 2024 (07:20:12 CEST)

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Preprint COMMUNICATION | doi:10.20944/preprints202404.0833.v1

Convenient Preparation, Thermal Properties and X-Ray Structure Determination of 2,3-Dihydro-5,6,7,8-tetranitro-1,4-benzodioxine (TNBD): a Promising High Energy Density Material (HEDM)

Jonas Šarlauskas

Subject: Chemistry And Materials Science, Organic Chemistry Keywords: 1,4-benzodioxane; nitration; nitro derivatives; tetranitro; synthesis; X-ray crystallography; structure; thermal analysis; high energy high density material (HEDM)

Online: 12 April 2024 (08:03:59 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202312.1515.v1

Ternary Phenolate-Based Thiosemicarbazone Complexes of Copper(II): Magnetostructural Properties, Spectroscopic Features and Marked Selective Antiproliferative Activity Against Cancer Cells

Iman K. Al-Salmi, Musa S. Shongwe

Subject: Chemistry And Materials Science, Inorganic And Nuclear Chemistry Keywords: mononuclear and dinuclear ternary copper(II) complexes; thiosemicarbazone; X-ray structures; tetragonal distortion; intermolecular forces; spectroscopy; selective potent cytotoxicity

Online: 20 December 2023 (10:22:57 CET)

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The new diprotic ligand 3,5-di-tert-butylsalicylaldehyde 4-ethyl-3-thiosemicarbazone, abbreviated H2(3,5-t-Bu2)-sal4eT, exists as the thio-keto tautomer and adopts the E-configuration with respect to the imine double bond as evidenced by single-crystal X-ray analysis and corroborated by spectroscopic characterisation. Upon treatment with Cu(OAc)2·H2O in the presence of either 2,9-dimethyl-1,10-phenanthroline (2,9-Me2-phen) or 1,10-phenanthroline (phen) as a co-ligand in MeOH, this thiosemicarbazone undergoes conformational transformation (relative donor-atom orientations: syn,anti → syn,syn) concomitantly with tautomerization and double deprotonation to afford the ternary copper(II) complexes [Cu{(3,5-t-Bu2)-sal4eT}(2,9-Me2-phen)] (1) and [Cu2{3,5-t-Bu2)-sal4eT}2(phen)] (2). Crystallographic elucidation has revealed that complex 1 is a centrosymmetric dimer of mononuclear copper(II) complex molecules brought about by intermolecular H-bonding. The coordination geometry at the copper(II) centre is best described as distorted square pyramidal in accord with the trigonality index (τ = 0.14). The co-ligand adopts an axial-equatorial coordination mode; hence there is a disparity between its two Cu–N coordinate bonds arising from weakening of the apical one as a consequence of the tetragonal distortion. The axial X-band ESR spectrum of complex 1 is consistent with retention of this structure in solution. Complex 2 is a centrosymmetric dimer of dinuclear copper(II) complex molecules exhibiting intermolecular H-bonding and π-π-stacking interactions. The two copper(II) centres, which are 4.8067(18) Å apart and bridged by the thio-enolate nitrogen of the quadridentate thiosemicarbazonate ligand, display two different coordination geometries, one distorted square planar (τ4 = 0.082) and the other distorted square pyramidal (τ5 = 0.33). Such dinuclear copper(II) thiosemicarbazone complexes, which are crystallographically characterised, are extremely rare. In vitro, complexes 1 and 2 outperform cisplatin as antiproliferative agents in terms of potency and selectivity towards HeLa and MCF-7 cancer cell lines.

Preprint ARTICLE | doi:10.20944/preprints202308.1928.v1

Using the BWA (Bertaut-Warren-Averbach) Method to Optimize the Technology of Crystalline Powders such as LiFePO4

Aleksandr Bobyl, Oleg Konkov, Mislimat Faradzheva, Igor Kasatkin

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: crystallites in powders; Lamé's shape; X-ray sizes; Bertaut-Warren-Averbach; Normal distributions; Lognormal distribution; energy storage; energy optimization

Online: 29 August 2023 (08:46:51 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202308.0266.v1

Effect of Fiber Sizing Levels on the Mechanical Properties of Carbon Fiber Reinforced Thermoset Composites

Albraa A. Jaber, Sara Abbas, Abdiaziz A. Farah, Karina Kopec, Yahya Al-Salik, Mohammed Tayeb, Nikhil Verghese

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: Carbon fiber; thermoset; sizing; single fiber tensile testing; single fiber pullout testing; sizing levels; X-ray photoelectron spectroscopy (XPS)

Online: 3 August 2023 (10:52:01 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202308.0184.v1

Non-Covalent Interactions between dUTP C5-Substituents and DNA Polymerase Result in a Decrease in PCR Efficiency

Olga A. Zasedateleva, Sergey A. Surzhikov, Viktoriya E. Kuznetsova, Valeriy E. Shershov, Victor E. Barsky, Alexander S. Zasedatelev, Alexander V. Chudinov

Subject: Biology And Life Sciences, Biochemistry And Molecular Biology Keywords: C5-modified dUTPs; A and B family DNA polymerases; PCR amplification; X-ray structure; molecular modeling; non-covalent interactions

Online: 2 August 2023 (08:21:50 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202210.0380.v1

Synthesis, Properties and Spatial Structure of 4-[(3,5-dimethyl-1,2-oxazol-4-yl)sulfonyl]cytisine

Marat K. Ibrayev, Оralgazy A. Nurkenov, Zhanara B. Rakhimberlinova, Altynaray T. Takibayeva, Dastan M. Turdybekov, Tulegen M. Seilkhanov, Meruyert B. Issabayeva, Assel A. Kelmyalene

Subject: Chemistry And Materials Science, Organic Chemistry Keywords: sulfo-derivatives of azoles; alkaloid cytisine; spatial structure; hemorheological activity; 1H; 13C; 2D NMR spectroscopy; X-ray diffraction analysis

Online: 25 October 2022 (07:33:55 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202103.0464.v1

Hybrid Nanoparticles Based on Cobalt Ferrite and Gold: Preparation and Characterization

Svetlana Saikova, Alexander Pavlikov, Tatyana Trofimova, Yuri Mikhlin, Denis Karpov, Anastasia Asanova, Yuri Grigoriev, Mikhail Volochaev, Sergey Zharkov, Dmitry Velikanov

Subject: Chemistry And Materials Science, Biomaterials Keywords: CoFe2O4/Au nanoparticles; toxicity; X-ray photoelectron spectroscopy; anion-exchange resin pre-cipitation; hybrid nanoparticles; synthesis; magnetic hysteresis loops

Online: 18 March 2021 (09:33:26 CET)

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

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

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

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

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

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Preprint ARTICLE | doi:10.20944/preprints201810.0013.v1

Mechanochemical Induced Structure Transformations in Lithium Titanates: A Detailed PXRD and 6Li MAS NMR Study

Dennis Becker, Robert Haberkorn, Guido Kickelbick

Subject: Chemistry And Materials Science, Inorganic And Nuclear Chemistry Keywords: lithium titanium oxide; mechanochemistry; high energy ball milling; X-ray diffraction; Rietveld refinement; 6Li SPE MAS NMR; impedance spectroscopy

Online: 1 October 2018 (14:20:29 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201802.0021.v1

In Vitro Antibacterial Activities of Aniline Dithiocarbamate Crystals with its Corresponding Oxovanadium(IV) and Zinc(II) Coordination Compounds

Ayodele Odularu, Peter Adewale Ajibade, Albert Bolhuis

Subject: Chemistry And Materials Science, Medicinal Chemistry Keywords: Keywords: one-pot synthesis; single crystal x-ray crystallography; oxovanadium(IV); zinc(II); spectroscopic studies; in vitro antibacterial studies.

Online: 2 February 2018 (16:00:10 CET)

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Preprint ARTICLE | doi:10.20944/preprints202410.2345.v1

Release of HMGB1 from Human-Derived Cancer and Normal Cells by Internal Targeted Radiotherapy with ¹³¹Iodine-Labeled m-Iodobenzylguanidine

Kakeru Sato, Ririka Handa, Jianwei Yao, Yuka Hirayama, Yuna Hamada, Jundai Yamagata, Taiga Watanabe, Asuka Mizutani, Masato Kobayashi, Ryuichi Nishii, Keiichi Kawai

Subject: Medicine And Pharmacology, Oncology And Oncogenics Keywords: damage-associated molecular patterns; high mobility group box-1 protein; X-ray; 131I-labeled m-iodobenzylguanidine; lactate dehydrogenase; immunotherapy ;

Online: 30 October 2024 (02:18:35 CET)

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Preprint ARTICLE | doi:10.20944/preprints202407.0104.v1

Pneumonia Detection from Chest X-rays Using the CheXNet Deep Learning Algorithm

Himanshu Bairwa, Rinku `Jangid

Subject: Computer Science And Mathematics, Computer Science Keywords: Pneumonia detection, chest X-ray, deep learning,CheXnet, neural networks, medical imaging, image
classification,convolution.

Online: 1 July 2024 (13:14:54 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202405.1470.v1

X-ray Single-Crystal Analysis, Pharmaco-Toxicological Profile and Enoyl-ACP Reductase Inhibiting Activity of Leading Sulfonyl Hydrazone Derivatives with Potent Antimycobacterial Activity

Yoanna Teneva, Rumyana Simeonova, Orlin Besarboliev, Hristina Sbirkova-Dimitrova, Violina T. Angelova

Subject: Chemistry And Materials Science, Organic Chemistry Keywords: tuberculosis; sulfonyl hydrazones; acute toxicity; sub-acute toxicity; antioxidant activity; Mycobacterium tuberculosis; enoyl-ACP reductase; Single crystal x-ray diffraction

Online: 23 May 2024 (10:01:34 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202311.1240.v1

Effect of Geometrical Confinement on Ordering of Thermoplastic Polyurethanes With Crystallizable Hard and Soft Blocks

Ainur F. Abukaev, Marina Gorbunova, Denis V. Anokhin, Dimitri A. Ivanov

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: thermoplastic polyurethane; poly(butylene adipate) diol; polycaprolactone diol; phase separation; crystallization kinetics; differential scanning calorimetry; infrared spectroscopy; X-ray diffraction

Online: 21 November 2023 (06:03:12 CET)

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Preprint ARTICLE | doi:10.20944/preprints202108.0377.v1

Magnetic Field Perturbations to a Soft X-Ray Activated Fe (II) Molecular Spin State Transition

Guanhua Hao, Alpha T. N'Diaye, Thilini K. Ekanayaka, Ashley S. Dale, Xuanyuan Jiang, Esha Mishra, Corbyn Mellinger, Saeed Yazdani, John W. Freeland, Jian Zhang, Ruihua Cheng, Xiaoshan Xu, Peter A. Dowben

Subject: Physical Sciences, Condensed Matter Physics Keywords: Spin crossover; Fe(II); activation barriers; X-ray excitation; magnetic field effects; [Fe{H2B(pz)2}2(bipy)]; molecular multiferroic.

Online: 18 August 2021 (11:30:12 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202009.0222.v1

Evidence of Stable Foraminifera Biomineralization During the Last Two Climate Cycles in the Tropical Atlantic Ocean

Stergios D. Zarkogiannis, Assimina Antonarakou, Vincent Fernandez, P. Graham Mortyn, George Kontakiotis, Hara Drinia, Mervyn Greaves

Subject: Environmental And Earth Sciences, Paleontology Keywords: planktonic foraminifera; shell weight; climate variability; sea surface density; carbonate production; X-ray microscopy (μCT); δ18O and Mg/Ca analyses

Online: 10 September 2020 (04:48:27 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201903.0097.v1

Synthesis and Characterization of Te Nanotubes Decorated with Pt Nanoparticles for Fuel Cell Anode/Cathode Working at Neutral pH

Maria Rachele Guascito, Daniela Chirizzi, Emanuela Filippo, Francesco Milano, Antonio Tepore

Subject: Chemistry And Materials Science, Electrochemistry Keywords: Te nanotubes decorated with Pt nanoparticles; fuel cell neutral pH; oxygen reduction reaction; methanol oxidation reaction; X-ray photoelectron spectroscopy.

Online: 7 March 2019 (13:49:46 CET)

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Preprint ARTICLE | doi:10.20944/preprints201812.0173.v2

Synthesis, Crystal Structure, DFT studies, Docking Studies and Fluorescent Properties of 2-(Adamantan-1-yl)-2H-isoindole-1-carbonitrile

Jacques Joubert

Subject: Chemistry And Materials Science, Organic Chemistry Keywords: 2-(Adamantan-1-yl)-2H-isoindole-1-carbonitrile; X-ray diffraction; DFT; molecular orbital calculations; fluorescence; docking; nNOS; fluorescent ligand

Online: 14 December 2018 (11:41:20 CET)

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Preprint ARTICLE | doi:10.20944/preprints201801.0204.v1

Formation of Deformation-Induced Products in a Metastable β-titanium Alloy during High Temperature Compression

Alireza Samiee, Gilberto Casillas, Mansur Ahmed, Dmytro G. Savvakin, Ryan Naseri, Elena Pereloma

Subject: Chemistry And Materials Science, Metals, Alloys And Metallurgy Keywords: metastable Ti alloy; high temperature deformation; stress-induced ω; stress-induced α˝ martensite; transmission electron microscopy; slip; X-ray diffraction.

Online: 22 January 2018 (17:17:03 CET)

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Preprint ARTICLE | doi:10.20944/preprints202401.0965.v2

Synthesis, Crystal Structure, and Electrochemistry of Mono- and Bis-Homoannular Ferrocene Derivatives

Uttam R. Pokharel, Derek Daigle, Stone Naquin, Gwyneth Engeron, Mary Lo, Frank R. Fronczek

Subject: Chemistry And Materials Science, Organic Chemistry Keywords: 1,2-(α -ketotetramethylene)-ferrocene; 1,2-(tetramethylene)-ferrocene; ferrocene; Friedel-Crafts acylation; Clemmensen reduction; X-ray crystallography; planar chirality; puckering parameters; electrochemistry

Online: 29 January 2024 (04:43:43 CET)

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Preprint ARTICLE | doi:10.20944/preprints202007.0274.v1

Growth and Characterization of Polycrystalline Silicon Thin Films for Photocatalytic Splitting of Water in Oxide-Si Tandem Cells

Ali Zahid, Umer Zahid, Aamir Hasan, Muhammad Khuldoon

Subject: Chemistry And Materials Science, Surfaces, Coatings And Films Keywords: tandem cells; magnetron sputtering; Raman Spectroscopy; X-Ray Diffraction; silicon deposition; Optical Transmission Spectroscopy; photocatalytic conversion; hydrogen production; post-sputtering treatments

Online: 13 July 2020 (00:33:58 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202407.1945.v1

Dual-Phase High Entropy Alloy for High-Temperature Application

Michael Lastovich, Sodiq Abiodun Kareem, Michael Bodunrin, Christopher Rock, Bharat Gwalani

Subject: Engineering, Metallurgy And Metallurgical Engineering Keywords: high entropy alloys; alloy design; high temperature properties; order-disorder transformations; Gleeble; in situ X-Ray diffraction; DSC; precipitation strengthening; compression; rollability

Online: 24 July 2024 (13:10:07 CEST)

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Preprint SHORT NOTE | doi:10.20944/preprints202309.0671.v1

(3-(4-chlorophenyl)-4,5-dihydroisoxazol-5-yl)methyl Benzene-Sulfonate

Loubna Mokhi, Karim Chkirate, Xiaodong Zhang, Mohsine Driowya, Khalid Bougrin

Subject: Chemistry And Materials Science, Organic Chemistry Keywords: Green strategy; One-pot reaction; isoxazoline sulfonate; Ultrasound cavitation; X-ray single-crystal structure analysis; Hydrogen bond; Hirshfeld surface analysis; DFT calculation.

Online: 11 September 2023 (09:58:23 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202305.0516.v1

Context-Based Synthesis of Unmeasurable Signals before Attenuation in Line-Scan X-ray Transmission

Tianzhong Xiong, Wenhua Ye

Subject: Engineering, Mining And Mineral Processing Keywords: context-based synthesis of unmeasurable signal; line-scan dual-energy X-ray transmission; vertical and horizontal anisotropy; difference of synthesis; real-time

Online: 8 May 2023 (10:28:04 CEST)

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Preprint COMMUNICATION | doi:10.20944/preprints202210.0383.v2

Pioneering Organelle Structural Biology: Golgi Apparatus Dysfunction in Parkinson’s Disease, Neurodevelopmental Disorders, and Cancer

Daniel Gómez

Subject: Biology And Life Sciences, Biochemistry And Molecular Biology Keywords: structural biology; organelles; Golgi Apparatus (GA); Parkinson’s disease (PD); cryo-ET; alpha-synuclein; neurodegenerative diseases; soft X-ray tomography (SXT); cancer; NDDs

Online: 5 December 2022 (02:27:26 CET)

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Preprint ARTICLE | doi:10.20944/preprints202011.0285.v1

Anti-Arthritic Effect of Chicken Embryo Tissue Hydrolyzate Against Adjuvant Arthritis in Rats (X-Ray Microtomographic and Histopathological Analysis)

Igor Rzhepakovsky, Svetlana Avanesyan, Mehmet Benlidayi, Kunaal Dhingra, Alexander Dolgalev, Natella Enukashvily, Tilman Fritsch, Stanislav Kochergin, Marina Sizonenko, Lyudmila Timchenko, Marco Vukovic, Sergey Piskov, Wolf-Dieter Grimm

Subject: Medicine And Pharmacology, Immunology And Allergy Keywords: chicken embryo tissue; hydrolyzate; food-derived bioactive peptides; adjuvant arthritis; anti-arthritic effect; in vitro and in vivo assays; X-ray microtomography

Online: 9 November 2020 (16:59:46 CET)

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Preprint ARTICLE | doi:10.20944/preprints201810.0535.v1

Metal Body Armour: Biomimetic Engineering of Lattice Structures ^†

Anton du Plessis, C. Broeckhoven

Subject: Engineering, Industrial And Manufacturing Engineering Keywords: biomimicry; biomimetic engineering; energy absorption; lattice structure; additive manufacturing; powder bed fusion; X-ray tomography; microCT; non-destructive testing; 3D image analysis

Online: 23 October 2018 (10:10:15 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202311.0416.v1

Study of the Nearby Source Based on Cosmic Ray Nuclear Spectra and Anisotropy

Aifeng Li, Fangheng Zhang, Wei Liu, Zhaodong Lv, Dongyue Liang, Xiangqu Chen

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: galatic cosmic rays; nearby source; cosmic ray anisotropy; cosmic ray spectra

Online: 7 November 2023 (08:28:00 CET)

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

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

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

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

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

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Preprint ARTICLE | doi:10.20944/preprints202409.0077.v1

Grain Structure Engineering in Screen-Printed Silver Flake-Based Inks for High-Temperature Printed Electronics Applications

Arjun Wadhwa, Mohammad Saadati, Jaime Benavides Guerrero, Martin Bolduc, Sylvain G Cloutier

Subject: Chemistry And Materials Science, Electronic, Optical And Magnetic Materials Keywords: Printed electronics; Screen Printing; high temperature inks; silver flake inks; grain boundary pinning; Zener effect; electron backscattered diffraction (EBSD); X-ray photoelectron spectroscopy (XPS)

Online: 3 September 2024 (05:36:46 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202408.1001.v1

In Vitro Antibacterial Activities of Sodium Phenyl Dithiocarbamate Crystal with Its Corresponding oxovanadium(IV) and zinc(II) Coordination Compounds

Ayodele Temidayo Odularu, Peter Adewale Ajibade, Eric C. Hosten

Subject: Chemistry And Materials Science, Medicinal Chemistry Keywords: in vitro antibacterial studies; one-pot synthesis; oxovanadium(IV) and zinc(II) coordination compounds of mixed ligands; single crystal x-ray crystallography; spectroscopic studies

Online: 14 August 2024 (12:23:38 CEST)

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Preprint REVIEW | doi:10.20944/preprints202007.0489.v1

Putting the Squeeze on Molecule-Based Magnets: Exploiting Pressure to Develop Magneto-Structural Correlations in Paramagnetic Coordination Compounds

Euan Brechin, Alvaro Etcheverry-Berrios, Simon Parsons, Konstantin Kamenev, Michael Probert, Stephen Moggach, Mark Murrie

Subject: Chemistry And Materials Science, Inorganic And Nuclear Chemistry Keywords: High pressure X-ray crystallography; high pressure magnetometry; high pressure absorption spectroscopy; high pressure EPR; molecule-based magnets; single-molecule magnets; single-ion magnets

Online: 21 July 2020 (12:48:58 CEST)

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The cornerstone of molecular magnetism is a detailed understanding of the relationship between structure and magnetic behaviour, i.e. the development of magneto-structural correlations. Traditionally, the synthetic chemist approaches this challenge by making multiple compounds that share a similar magnetic core but differ in peripheral ligation. Changes in the ligand framework induce changes in the bond angles and distances around the metal ions which are manifested in changes to magnetic susceptibility and magnetisation data. This approach requires the synthesis of series of different ligands and assumes that the chemical/electronic nature of the ligands and their coordination to the metal, the nature and number of counter ions and how they are positioned in the crystal lattice, and the molecular and crystallographic symmetry have no effect on the measured magnetic properties. In short, the assumption is that everything outwith the magnetic core is innocent, which is a huge oversimplification. The ideal scenario would be to have the same complex available in multiple structural conformations, and this is something that can be achieved through the application of external hydrostatic pressure, correlating structural changes observed through high pressure single crystal X-ray crystallography with changes observed in high pressure magnetometry, in tandem with high pressure inelastic neutron scattering (INS), high pressure electron paramagnetic resonance (EPR) spectroscopy and high pressure absorption/emission/Raman spectroscopy. In this review, which summarises our work in this area over the last 15 years, we show that the application of pressure to molecule-based magnets can (reversibly): (1) lead to changes in bond angles, distances and Jahn-Teller orientations; (2) break and form bonds; (3) induce polymerisation/depolymerisation; (4) enforce multiple phase transitions; (5) instigate piezochromism; (6) change the magnitude and sign of pairwise exchange interactions and magnetic anisotropy and (7) lead to significant increases in magnetic ordering temperatures.

Preprint REVIEW | doi:10.20944/preprints202005.0234.v1

Epidemiological Challenges in Pandemic Coronavirus Disease (COVID-19): Role of Artificial Intelligence

Abhijit Dasgupta, Abhisek Bakshi, Srijani Mukherjee, Kuntal Das, Soumyajeet Talukdar, Pratyayee Chatterjee, Sagnik Mondal, Puspita Das, Subhrojit Ghosh, Archisman Som, Pritha Roy, Rima Kundu, Akash Sarkar, Arnab Biswas, Karnelia Paul, Sujit Basak, Krishnendu Manna, Chinmay Saha, Satinath Mukhopadhyay, Nitai P. Bhattacharyya, Rajat K. De

Subject: Computer Science And Mathematics, Artificial Intelligence And Machine Learning Keywords: SIRD; Twitter; GHSI; Pre-symptomatic; EHR; Contact tracing; On-line survey; qRT-PCR; X-ray; CT/HRCT; CNN; Autoencoder; Drug affinity; CPI; and Inflation.

Online: 14 May 2020 (11:25:57 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202410.0442.v1

Impact of Soot on Internal Combustion Engine Lubrication – Oil Condition Monitoring, Tribological Properties and Surface Chemistry

Adam Agocs, Marcella Frauscher, Andjelka Ristic, Nicole Doerr

Subject: Chemistry And Materials Science, Surfaces, Coatings And Films Keywords: Soot; oil degradation; internal combustion engine; diesel engine; wear; antiwear additive; zinc dialkyl-dithiophosphate (ZDDP); high-resolution mass spectrometry; tribofilm; x-ray photoelectron spectroscopy (XPS)

Online: 8 October 2024 (11:08:11 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202406.0744.v1

Influence of Glycerol on the Surface Morphology and Crystallinity of Polyvinyl Alcohol Films

Ganna Kovtun, David Casas, Teresa Cuberes

Subject: Chemistry And Materials Science, Nanotechnology Keywords: polyvinyl alcohol films pva/glycerol blends; crystallinity; infrared spectroscopy; x-ray diffraction; thermogravimetry; differential thermal analysis; atomic force microscopy; lateral force microscopy; ultrasonic force microscopy

Online: 12 June 2024 (14:07:00 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0234.v1

Microstructural and Hydrophilic Properties of Polylactide Polymer Samples with Various 3D Printing Patterns

Aleksandr S. Lenshin, Vera E. Frolova, Sergey V. Kannykin, Evelina P. Domashevskaya

Subject: Physical Sciences, Applied Physics Keywords: polylactide (Polylactic Acid-PLA); 3D printing model drawings; X-ray phase state; partial crystallization; stable phase of ᾳ-Poly(L-lactide); IR spectra; surface wetting

Online: 3 April 2024 (08:14:01 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202311.0500.v1

Nanostructural Characterization of Luminescent Polyvinyl Alcohol / Graphene Quantum Dots Nanocomposite Films

Dhanumalayan Elumalai, B. Rodríguez, G. Kovtun, P. Hidalgo, B. Méndez, S. Kalleemula, G. M. Joshi, M. T. Cuberes

Subject: Chemistry And Materials Science, Nanotechnology Keywords: Polyvinyl Alcohol; Graphene Quantum Dots; Atomic Force Microscopy; Ultrasonic Force Mi-croscopy; Friction Force Microscopy; Photoluminescence; X-Ray Difraction; Infrared Spectroscopy; Thermogravimetry; Differential Thermal Analysis

Online: 8 November 2023 (07:37:55 CET)

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Preprint ARTICLE | doi:10.3390/sci2020046

Portable XRF Quick-Scan Mapping for Potential Toxic Elements Pollutants in Sustainable Urban Drainage Systems: A Methodological Approach

Guri Venvik, Floris Boogaard

Subject: Environmental And Earth Sciences, Environmental Science Keywords: portable X-ray fluorescence spectrometer (pXRF); Potential Toxic Elements (PTE); lead (Pb), zinc (Zn); copper (Cu); topsoil; sustainable urban drainage systems; SuDS; LID; BMPs; WSUD; GI; SCMs

Online: 13 June 2020 (00:00:00 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201812.0236.v2

Specificity of Escherichia coli Heat-Labile Enterotoxin Investigated by Single-Site Mutagenesis and Crystallography

Julie E. Heggelund, Joel B. Heim, Gregor Bajc, Vesna Hodnik, Gregor Anderluh, Ute Krengel

Subject: Biology And Life Sciences, Biochemistry And Molecular Biology Keywords: bacterial toxin; cholera toxin; Escherichia coli heat-labile enterotoxin; lectin; N-acetyllactosamine binding; neutral glycosphingolipids; protein-carbohydrate interactions; surface plasmon resonance spectroscopy; X-ray crystal structure

Online: 28 January 2019 (15:23:24 CET)

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Preprint CASE REPORT | doi:10.20944/preprints202401.2106.v1

Application of X-STRs for Forensic Identification in Mixed DNA Profile: A Case Report

Nunzia Ilaria Vacca, Giacoma Mongelli, Stefania Ceccardi, Vincenzo Agostini

Subject: Biology And Life Sciences, Biochemistry And Molecular Biology Keywords: X-Chromosomal markers; X-STRs; DNA; mixture; Forensic genetics; Case Report

Online: 30 January 2024 (12:49:54 CET)

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Preprint ARTICLE | doi:10.20944/preprints201909.0069.v1

On The Extension of Compton's Experiment: A Theoretical Investigation

Amal Pushp Fras

Subject: Physical Sciences, Atomic And Molecular Physics Keywords: Compton Scattering, Gamma Ray Spectroscopy

Online: 6 September 2019 (09:35:13 CEST)

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

Cosmic Ray Extremely Distributed Observatory

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

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

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

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Preprint ARTICLE | doi:10.20944/preprints202405.1328.v1

Spectral Properties of Bistatic Radar Signals using the Ray Tracing Technique and a Facet Approach

Mingcheng Zuo, Rukiah S. MiItri, Igor Gai, Gancorrado Brighi, Paolo Tortora

Subject: Physical Sciences, Space Science Keywords: Bistatic Radar; Surface Roughness; Ray Tracing

Online: 21 May 2024 (17:22:45 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202307.0943.v1

Evaluating Structural Details Influence on Elastic Wave Propagation for Composite Structures via Ray Tracing

Fernando Sanchez Iglesias, Antonio Fernández López

Subject: Engineering, Aerospace Engineering Keywords: SHM; wave propagation; composites; ray tracing

Online: 14 July 2023 (05:34:53 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202406.1569.v1

Application of Methods Detecting Xenotransplantation-Relevant Viruses for Screening German Slaughterhouse Pigs

Hina Jhelum, Benedikt B. Kaufer, Joachim Denner

Subject: Biology And Life Sciences, Life Sciences Keywords: porcine viruses; xenotransplantation; virus safety; herpes viruses x porcine endogenous retroviruses x latency

Online: 24 June 2024 (12:03:46 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201807.0542.v1

Effect of Heat Stress on Yield, Monoterpene Content and Antibacterial Activity of Essential Oils of Mentha X Piperita Var. Mitcham and Mentha Arvensis Var. Piperascens

Milad Heydari, Anna Zanfardino, Alireza Taleei, Ali Akbar Shah-NejatBoushehri, Javad Hadian, Viviana Maresca, Sergio Sorbo, Michela Di Napoli, Mario Varcamonti, Adriana Basile, Daniela Rigano

Subject: Biology And Life Sciences, Agricultural Science And Agronomy Keywords: Mentha x piperita; Mentha x arvensis; essential oils; heat stress; antibacterial activity; monoterpenes

Online: 27 July 2018 (14:04:14 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202403.1235.v1

Microplastic Contamination in Commercial Insect Meal: A Valid Analytical Method to Detect It

Simona Rimoldi, Jessica Ponti, Andrea Valsesia, Giulio Saroglia, Rita La Spina, Francesco Fumagalli, Genciana Terova

Subject: Biology And Life Sciences, Animal Science, Veterinary Science And Zoology Keywords: Aquaculture; Insect meal; Microplastics (MP); Nanoplastics (NP); Aquafeed; Raman microscopy; Transmission Electron Microscopy (TEM); Scanning Electron Microscope (SEM); Energy-dispersive X-ray spectroscopy (EDX); Fourier transform infrared (FTIR).

Online: 20 March 2024 (14:11:36 CET)

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Preprint ARTICLE | doi:10.20944/preprints202105.0480.v1

A Biophysical Insight of Camptothecin Biodistribution: Towards a Molecular Understanding of Its Pharmacokinetic Issues

Andreia Almeida, Eduarda Fernandes, Bruno Sarmento, Marlene Lúcio

Subject: Biology And Life Sciences, Biochemistry And Molecular Biology Keywords: camptothecin; drug distribution; drug-membrane interaction; biophysical profiling; biomimetic models; partition coefficient; ADMET/PK prediction; small and wide-angle X-ray diffraction; fluorescence spectroscopy; human serum albumin (HSA)

Online: 20 May 2021 (10:52:33 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202408.1585.v1

Surface and Mineral Changes of Primary Enamel After Laser Diode Irradiation and Application of Remineralization Agents: A Comparative In Vitro Study

Mihaela-Valentina Cîrdei, Mădălin-Marius Margan, Roxana Margan, Alexandra Ban-Cucerzan, Ion Petre, Iosif Hulka, Razvan Mihai Horhat, Darinca Carmen Todea

Subject: Medicine And Pharmacology, Dentistry And Oral Surgery Keywords: low light laser therapy; DIAGNOdent; diode laser; fluoride varnish; casein phosphopeptide-amorphous calcium phosphate; energy dispersive X-ray spectroscopy (EDX); solubility of dental primary enamel; scanning electron microscope (SEM)

Online: 22 August 2024 (02:54:50 CEST)

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Aim: The purpose of this study is to evaluate the remineralization potential of primary teeth enamel after being exposed to different laser diode therapy. Methods: Ninety-six vestibular primary teeth enamel samples were divided into eight groups (n=12) with varying treatments: control (G1), CPP-ACP-fluoride varnish (G2), diode lasers at 980 nm (G3), 808 nm (G4), 450 nm (G5), 980 nm + CPP-ACP-fluoride varnish (G6), 808 nm + CPP-ACP-fluoride varnish (G7), and 450 nm + CPP-ACP-fluoride varnish (G8). Each sample was assessed using DIAGNOdent® at baseline, post-treatment, and post-pH cycle re-mineralization. SEM imaging was performed before and after treatment and following the pH cycle. Results: The results indicated that the 980 nm and 808 nm diode lasers, both alone and in combination with CPP-ACP-fluoride varnish, either maintained or increased the calcium (Ca) weight percentage (Wt%) in the enamel. The 980 nm diode laser combined with CPP-ACP-fluoride varnish (G6) showed a significant increase in Ca Wt%, suggesting a strong remineralization effect. Similarly, the 808 nm diode laser alone (G4) also promoted a substantial increase in Ca Wt%. In contrast, the 450 nm diode laser, whether applied alone or in combination with CPP-ACP-fluoride varnish, resulted in a lower Ca Wt% and an increase in phosphorus (P) Wt%. Most groups, except for the CPP-ACP-fluoride varnish alone (G2), demonstrated an increase in P Wt%, indicating a complex interaction between laser therapy and enamel remineralization. Conclusions: The combined use of laser therapy with CPP-ACP-fluoride varnish significantly enhanced the remineralization of temporary teeth enamel. The 980 nm diode laser + CPP-ACP-fluoride varnish showed the most pronounced improvement in remineralization, while the 808 nm diode laser alone also effectively increased calcium solubility. These findings suggest that higher wavelength diode lasers, particularly when combined with remineralizing agents, can effectively enhance the mineral content of primary teeth and promote enamel remineralization.

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

On the Ray-Wavefront Duality

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

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

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

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Preprint ARTICLE | doi:10.20944/preprints202405.2119.v1

Circadian Rhythm and Sleep Analyses in a Fruit Fly Model of Fragile X Syndrome Using a Video-Based Automated Behavioral Research System

Sara MILOJEVIC, Arijit Ghosh, Vedrana Makevic, Maja STOJKOVIC, Maria CAPOVILLA, Dejan B. Budimirovic, Dragana Protic

Subject: Biology And Life Sciences, Behavioral Sciences Keywords: Drosophila melanogaster model of fragile X syndrome; FMR1 gene; Fragile X syndrome; Circadian rhythm; Sleep.

Online: 31 May 2024 (10:47:24 CEST)

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Preprint ARTICLE | doi:10.20944/preprints201810.0065.v1

Using Tandem-X Science Phase Observations to Extract Glacial Topography

Sang-Hoon Hong, Shimon Wdowinski, Falk Amelung, Hyun-Cheol Kim, Joong-Sun Won, Sang-Wan Kim

Subject: Environmental And Earth Sciences, Environmental Science Keywords: TanDEM-X; digital elevation model; TanDEM-X Science Phase; radar interferometry; Petermann Glacier; ambiguity height

Online: 3 October 2018 (17:21:00 CEST)

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Space-based Interferometric Synthetic Aperture Radar (InSAR) applications have been widely used to monitor the cryosphere over past decades. Because of temporal decorrelation, interferometric coherence often severely degrades on fast moving glaciers. In addition, higher sensitivity ambiguity occurs in large baseline configurations, which are needed for extracting topographic information over low relief areas such as the surface of a glacier. TerraSAR-X add-on for Digital Elevation Measurement (TanDEM-X) observations, which overcome the temporal decorrelation because of their simultaneous measurements by two satellite constellations, have used a short baseline sufficient for generation of excellent digital elevation models in most locations around the world. However, it remains difficult to estimate detailed topographic characteristics over low slope glacier surfaces because of the relatively less sensitive height ambiguity from the small baselines. In this study, we used the TanDEM-X pursuit monostatic mode with large baseline formation following a scientific phase timeline to develop highly sensitive topographic elevation models of the Petermann Glacier of Northwest Greenland. As expected, coherent interferometric phases (> 0.8) were well maintained over the glaciers despite their fast movement thanks to the nearly simultaneous TanDEM‐X measurements. The height ambiguity, which defined as the altitude difference correspondent to phase change of flattened interferogram, of the dataset was 10.63 m, which is favorable for extracting topography in a low relief region. We validated the TanDEM‐X derived glacial topography by comparing it to the SAR/Interferometric radar altimeter observations acquired by CryoSat‐2 and the IceBridge Airborne Topographic Mapper laser altimeter measurements. Both observations showed very good correlation within a few meters of the offsets (‐12.5 – ‐3.1 m) with respect to the derived glacial topography. Because of highly sensitive ambiguity, we could successfully extract detailed geomorphological features on the glaciers. Routine TanDEM-X observations will be very useful to better understand the dynamics of glacial movements and topographic change.

Preprint REVIEW | doi:10.20944/preprints202211.0542.v1

Lobe X of the Cerebellum: A Natural Neuro-resistant Region

Carlos Hernández-Pérez, Eduardo Weruaga, David Díaz

Subject: Biology And Life Sciences, Anatomy And Physiology Keywords: Cerebellum; lobe X; neurodegeneration; neuro-resistance

Online: 29 November 2022 (08:41:51 CET)

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Preprint REVIEW | doi:10.20944/preprints202203.0139.v1

CD15 and CD15s in The Anticancer Therapy

Wojciech Szlasa, Karol Wilk, Klaudia Knecht-Gurwin, Adam Gurwin, Anita Froń, Natalia Sauer, Jolanta Saczko, Tomasz Szydełko, Julita Kulbacka, Bartosz Małkiewicz

Subject: Medicine And Pharmacology, Oncology And Oncogenics Keywords: CD15; Lewis X; Lex; Cancer; Therapy

Online: 10 March 2022 (04:15:33 CET)

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Preprint ARTICLE | doi:10.20944/preprints202409.2355.v1

Existence of Two Solutions for $(p(x), Q(x))$-Laplacian

Rahmani Mostafa, Belhadj Karim, Zerouali Abdellah, Lakhdi Abdessamad

Subject: Computer Science And Mathematics, Computational Mathematics Keywords: Ekeland's variational principle; Elliptic equations; $(p(x); q(x))$-Laplacian; Mountain pass theorem; Steklov eigenvalue problem

Online: 30 September 2024 (05:35:59 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202409.1597.v1

New Tests on Lorentz Invariance Violation Using Energy-Resolved Polarimetry of Gamma-Ray Bursts

Jun-Jie Wei

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: gamma-ray bursts; astroparticle physics; gravitation; quantum gravity

Online: 20 September 2024 (07:10:21 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202007.0687.v1

Comparative Analysis of Volatile Compounds of Gamma-Irradiated Mutants of Rose (Rosa hybrida)

Jaihyunk Ryu, Dong-Gun Kim, Jung Min Kim, Jae Il Lyu, Yeong Deuk Jo, Si-Yong Kang, Jin-Baek Kim, Sang Hoon Kim

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: Gamma-ray, Mutant, Rose, Volatile compounds, GC-MS

Online: 29 July 2020 (09:46:55 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202310.1335.v1

Understanding the Interactions between Soft Segments in Polyurethanes: Structural Synergies in Blends of Polyester and Polycarbonate Diol Polyols

Yuliet Paez-Amieva, José Miguel Martín-Martínez

Subject: Chemistry And Materials Science, Polymers And Plastics Keywords: polyester polyol; polycarbonate diol polyol; polyols blends; van der Waals interactions; Infra-red spectroscopy; differential scanning calorimetry; thermal gravimetric analysis; contact angle; X-ray photoelectron spectroscopy; plate-plate rheology; self-adhesion

Online: 20 October 2023 (11:37:20 CEST)

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Preprint REVIEW | doi:10.20944/preprints202309.1372.v1

Harnessing Oleanolic Acid as A Modulator of Metabolic Nuclear Receptors

Mohamed O. Radwan, Sultan F. Kadasah, Salha M. Aljubiri, Abdulmajeed F. Alrefaei, Mahmoud H. El-Maghrabey, Mohamed A. El Hamd, Hiroshi Tateishi, Masami Otsuka, Mikako Fujita

Subject: Biology And Life Sciences, Biochemistry And Molecular Biology Keywords: oleanolic acid; nuclear receptors; metabolic disorders; NASH; farnesoid X receptor; liver X receptor; peroxisome-proliferator activated receptors

Online: 21 September 2023 (03:12:08 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202303.0420.v7

A Common Approach to Three Open Problems in Number Theory

Apoloniusz Tyszka

Subject: Computer Science And Mathematics, Algebra And Number Theory Keywords: Brocard's problem; Brocard-Ramanujan equation x!+1=y^2; composite Fermat numbers; composite numbers of the form 2^(2^n)+1; Erd\"os' equation x(x+1)=y!

Online: 18 May 2023 (08:25:27 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202407.0915.v1

Screening and Characterization of DNA Aptamers for the Anti-Klebsiella pneumoniae Omp X Protein by the SELEX Method

Zhenxing Fan, Baihai Huang, Lei He, Yuting Lai, Yunwang Zhao, Meng Wang, Baolin Li, Shiqi Liao

Subject: Biology And Life Sciences, Biochemistry And Molecular Biology Keywords: Omp X; DNA aptamers; Klebsiella pneumoniae; SELEX

Online: 11 July 2024 (04:52:04 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202405.1413.v1

Generation X and Boutique Hotels: An Exploratory Study

Tammie J Kaufman, Jessica Hoeschen

Subject: Business, Economics And Management, Other Keywords: Boutique Hotels; Generation X; Culinary Traveler; Marketing

Online: 21 May 2024 (16:14:50 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0268.v1

Covers of Finitely Generated Acts over Monoids

Xiaoqin Zhang, Tingting Zhao

Subject: Computer Science And Mathematics, Algebra And Number Theory Keywords: cover; coproduct; finitely generated; $\mathcal{X}$-precover

Online: 3 April 2024 (08:28:04 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202403.1844.v1

Normalized Clinical Severity Scores Reveal a Correlation between X Chromosome Inactivation and Disease Severity in Rett Syndrome

Jonathan K. Merritt, Xiaolan Fang, Raymond C. Caylor, Steven A. Skinner, Michael J. Friez, Alan K. Percy, Jeffrey L. Neul

Subject: Medicine And Pharmacology, Neuroscience And Neurology Keywords: Rett Syndrome, X Chromosome Inactivation, longitudinal modeling

Online: 29 March 2024 (10:27:34 CET)

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Preprint REVIEW | doi:10.20944/preprints202309.2077.v1

Illuminating Dersimelagon: A Novel Agent in the Treatment of Erythropoietic Protoporphyria and X-Linked Protoporphyria

Katelyn E Madigan, Sean R Rudnick, Matthew A Agnew, Numra Urooj, Herbert L Bonkovsky

Subject: Medicine And Pharmacology, Gastroenterology And Hepatology Keywords: Erythropoietic Protoporphyria; X-linked protoporphyria, oral, dersimelagon

Online: 29 September 2023 (05:48:07 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202010.0389.v1

The TanDEM-X Change DEM: the New Temporal DEM of the TanDEM-X Mission

Marie Lachaise, Markus Bachmann, Thomas Fritz, Martin Huber, Barbara Schweißhelm, Birgit Wessel

Subject: Engineering, Automotive Engineering Keywords: TanDEM-X Mission; Change DEM; delta-phase

Online: 19 October 2020 (14:53:16 CEST)

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Preprint REVIEW | doi:10.20944/preprints201802.0062.v1

The growth of interest for astronomical X-ray polarimetry

Frédéric Marin

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: X-rays; polarimetry; general; history of astronomy

Online: 7 February 2018 (10:35:37 CET)

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Preprint ARTICLE | doi:10.20944/preprints202407.2285.v1

Comparative Study on the Interest of NURBS Representation Versus Polynomial Surface Description in Freeform TMA

Clément Freslier, Guillaume Druart, Alice Fontbonne, Thierry Lepine, Christophe Buisset, Tibor Agocs, Arnaud Hélière, Fanny Keller, Jean-Baptiste Volatier, Stéphane Beaussier, Paul Jougla

Subject: Physical Sciences, Optics And Photonics Keywords: optimization; freeform; NURBS; differential ray tracer; XY polynomials; TMA

Online: 29 July 2024 (10:14:59 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202405.1226.v2

Fitting the Crab Supernova with a Gamma-Ray Burst

Remo Ruffini, Costantino Sigismondi

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Supernova (SN1054); Gamma-ray Burst (GRB190114C); Binary-driven Hypernova

Online: 17 June 2024 (08:06:01 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.0500.v1

Identification of Convection as a Source for the Gravity Waves Observed in the Upper Mesosphere during Indo-French Campaign on Coupling of Lower and Middle Atmospheres

M. Pramitha, M. Venkat Ratnam, Alok Taori

Subject: Environmental And Earth Sciences, Atmospheric Science And Meteorology Keywords: Gravity waves; GROGRAT model; ray tracing; convection; airglow ;

Online: 8 April 2024 (05:06:42 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202309.0820.v1

Muonography of Caves of the Holy Dormition Pskovo-Pechersky Monastery

Andrey Alexandrov, Anna Anokhina, Svetlana Vasina, Alexei Gippius, Sergei Gorbunov, Victor Grachev, Nina Konovalova, Yulia Krasilnikova, Alexey Larionov, Alexander Managadze, Ilia Melnichenko, Natalia Okateva, Sergey Paramonov, Anatoly Petrukhin, Natalia Polukhina, Tatiana Roganova, Zhakypbek Sadykov, Nikolay Starkov, Elena Starkova, Valeri Tioukov, Mikhail Chernyavskii, Vladimir Shevchenko, Tatiana Shchedrina

Subject: Physical Sciences, Applied Physics Keywords: nuclear emulsions; cosmic ray muons; muonography; automatic scanning systems

Online: 13 September 2023 (10:12:54 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202306.1774.v1

Stripping Model for Short GRBs: the Impact of Nuclear Data

Andrey Yudin, Nikita Kramarev, Igor Panov, Anton Ignatovskiy

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: gamma-ray bursts; neutron stars; stripping model; r-process

Online: 26 June 2023 (09:47:36 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202209.0291.v1

Multidimensional Machine Learning on 2173 COVID-19 Patients in Vietnam

Tue Trong Nguyen *, Tu Cam Ho *, Huong Thi Thu Bui *, Ulrike Protzer, Van Thanh Ta

Subject: Biology And Life Sciences, Virology Keywords: COVID-19; Multidimensional Analysis; HCA; Hierarchical cluster analysis; regression analysis; mild; moderate; severe; Age; Score index of the chest X-ray; percentage and quantity of neutrophils; Albumin; C reactive protein; ratio of Lymphocytes

Online: 20 September 2022 (04:50:36 CEST)

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INTRODUCTION: The purpose of the study was to determine (a) the overall preclinical character; (b) the cumulative cutoff values and the risk ratio, and (c) the factors associated with severity by a unidimensional and multidimensional analysis on 2173 Sars-Cov2 patients. METHODS: The machine learning study population consisted of 2173 patients (1587 mild and non symptoms patients, 377 moderate patients, 209 severe patients). The status of the patients was recorded from September 2021 to March 2022. RESULTS: The Covid19 Severity directly links with a significant correlation to Age, Score index of the chest X-ray, percentage and quantity of neutrophils, Albumin, C reactive protein, and ratio of Lymphocytes. Their important cut off values (from regression analysis) respectively are: 77.56 years old (the mild-moderate group), 5.53 (the mild-moderate group) and 10.51 (the moderate-severe group), 84.80% (the mild-moderate group) and 87.74%(the moderate-severe group), 11.77G/L (the moderate-severe group), 29.73g/L (the moderate-severe group), 7.46mg/dL (the mild-moderate group), 6.32% (the moderate-severe group). Their significant (p<0.0001) R score correlation with the severity of Covid19, are: 0.44, 0.52 and 0.52, 0.33 and 0.44, 0.42, -0.43, 0.40, -0.41. Their significant risk ratio (p<0.00001) from the meta-analysis, respectively are: 4.19 [3.58-4.95], 3.29 [2.76-3.92] and 3.03 [2.4023;3.8314], 3.18 [2.73-3.70] and 3.32 [2.6480;4.1529], 3.15 [2.6153;3.8025], 3.4[2.91-3.97], 0.46 [0.3650;0.5752] (p<0.00001), 0.34 [0.2743;0.4210]. The pair ALT – Leucocytes and Transferrin – Anion Chloride get the most important correlation shift. ALT – Leucocytes show the important negative link (R=-1, p<0.00001) in the mild group to the significant positive correlation in the moderate group (R=1, p<0.00001). Transferrin–anion Chloride has an important positive association (R=1, p<0.00001) in the mild group with a significant negative correlation in the moderate group (R=-0.59, p<0.00001). The network map and HCA show that in the mild-moderate group, the closest neighbors with the Covid19 severity are ferritins, Age. Then there is C-reactive protein, SI of X-ray, Albumin, and Lactate dehydrogenase, which are the next close neighbors of these three factors. In the moderate-severe group, the closest neighbors with the Covid19 severity are Ferritin, Fibrinogen, Albumin, the quantity of Lymphocytes, SI of X-ray, white blood cells count, Lactate dehydrogenase, and quantity of neutrophils. CONCLUSIONS: Complete multidimensional study in 2173 Covid19 patients in Vietnam shows the whole picture of all the preclinical factors, which may become the clinical reference marker for surveillance and diagnostic management

Preprint ARTICLE | doi:10.20944/preprints202410.0071.v1

High-Resolution Spaceborne SAR Geolocation Accuracy Analysis and Error Correction

Facheng Li, Qiming Zeng

Subject: Environmental And Earth Sciences, Remote Sensing Keywords: SAR geolocation; tropospheric correction; TerraSAR-X; Tianhui-2

Online: 1 October 2024 (14:21:18 CEST)

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Preprint BRIEF REPORT | doi:10.20944/preprints202404.1370.v1

F10 Gene Expression and Ethnic Disparities Present in Papillary Thyroid Carcinoma

Tyrel Porter, Lilia Kucheryavykh

Subject: Biology And Life Sciences, Biochemistry And Molecular Biology Keywords: Papillary Thyroid Carcinoma; Ethnic Disparities; Factor X; F10

Online: 22 April 2024 (10:17:15 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202312.2321.v2

Galactic Spiral from ROTASE Model with Large Enough ρ Is Equivalent to Archimedean Spiral

Hongjun Pan

Subject: Computer Science And Mathematics, Mathematics Keywords: Galactic spiral; Prime spiral; ROTASE model; X-matter

Online: 4 January 2024 (07:24:36 CET)

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Preprint REVIEW | doi:10.20944/preprints202201.0183.v1

Mechanisms of Choice in X-Chromosome Inactivation

Giulia Furlan, Rafael Galupa

Subject: Biology And Life Sciences, Biochemistry And Molecular Biology Keywords: X-chromosome inactivation; allelic choice; skewing; placentals; marsupials

Online: 12 January 2022 (18:52:02 CET)

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Preprint ARTICLE | doi:10.20944/preprints202002.0045.v1

A Fully Coaxial Tunable Broadband Power Equalizer for an X-band MPM

Patrizia Livreri, Fabio Lo Gerfo

Subject: Engineering, Electrical And Electronic Engineering Keywords: Broadband power equalizer; coaxial; MPM; TWT; X-band

Online: 4 February 2020 (10:45:44 CET)

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Preprint ARTICLE | doi:10.20944/preprints201711.0003.v1

Wetland Mapping Using SAR Data from Sentinel-1A and TanDEM-X Missions: Comparative Study in the Biebrza Floodplain (Poland)

Magdalena Mleczko, Marek Mróz

Subject: Environmental And Earth Sciences, Remote Sensing Keywords: Sentinel-1A; TanDEM-X science phase; wetlands mapping

Online: 1 November 2017 (04:37:20 CET)

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Preprint ARTICLE | doi:10.20944/preprints202111.0189.v1

An Effective Method for InSAR Mapping of Tropical Forest Degradation in Hilly Areas

Harry Carstairs, Edward T. A. Mitchard, Iain McNicol, Chiara Aquino, Andrew Burt, Medard Obiang Ebanega, Anaick Modinga Dikongo, Jose-Luis Bueso-Bello, Mathias Disney

Subject: Environmental And Earth Sciences, Environmental Science Keywords: InSAR; TanDEM-X; forest degradation; biomass change; Synthetic Aperture Radar; SAR; Carbon cycle; Satellite data; Earth Observation; DLR; X-band

Online: 9 November 2021 (15:43:37 CET)

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Preprint ARTICLE | doi:10.20944/preprints202405.1830.v1

Thermal Expansion of Alkaline-Earth Borates

Rimma Sergeevna Bubnova, Valentina Anatolevna Yukhno, Maria Georgievna Krzhizhanovskaya, Georgii Svyatoslavovich Sizov, Stanislav Konstantinovich Filatov

Subject: Chemistry And Materials Science, Physical Chemistry Keywords: borates; thermal expansion; crystal structure; high-temperature; Х-ray diffraction

Online: 28 May 2024 (11:46:48 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202309.0348.v1

View Evaluation Based on Visibility and Economical Value of High-Rise Apartment Units in the Northern Area of Seoul

Hansol Park, Takatoshi Arai, Kentaro Honma, Kotaro Imai

Subject: Engineering, Architecture, Building And Construction Keywords: view quantification; visibility, ray tracing; apartment; apartment price; view value

Online: 6 September 2023 (09:30:55 CEST)

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Preprint REVIEW | doi:10.20944/preprints201811.0195.v1

The Origin of the Most Energetic Galactic Cosmic Rays: Supernova Explosions into Massive Star Plasma Winds

Peter Biermann, Philipp Kronberg, Michael Allen, Athina Meli, Eun-Suk Seo

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Cosmic Rays; Massive Star Supernovae; Cosmic Ray Knee and Ankle.

Online: 8 November 2018 (09:53:33 CET)

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We propose that the high energy Cosmic Ray particles around the spectral turn-down commonly called the {\it knee} and up to the upturn, commonly called the {\it ankle}, mostly come from Blue Super Giant star explosions. At the upturn, i.e. the {\it ankle}, Cosmic Rays probably switch to another source class, most likely extragalactic sources. To show this we recently compiled a set of Radio Supernova data to list the magnetic field, shock speed and radius scale (Biermann et al. 2018) \cite{Biermann18}. Using particle acceleration theory at shocks, those numbers can be transformed into characteristic {\it knee} and {\it ankle} energies. Without adjusting any free parameters both of these observed energies are directly indicated by the supernova data. We now proceed to the next step in the argument, and use the Supernova Remnant data of the starburst galaxy M82. Assuming that they are Blue Supergiant star explosions, the shock will race to their outer edge with a magnetic field that follows ${B (r) \, r \, \sim \, const.}$. We argue that the shock runs through the entire magnetic plasma wind region at full speed all the way out to the wind-shell, which is of order parsec scale. The speed is observed to be $\sim \, 0.1 \, c$ at about ${10^{16} \, {\rm cm}}$ radius in the plasma wind. This demonstrates how Blue Supergiant star explosions can provide the Cosmic Ray particles across the {\it knee} and up to the {\it ankle} energy range. The data from the CREAM (Cosmic Ray Energetics and Mass Experiment) mission will test this cosmic ray concept which is reasonably well grounded in two independent radio supernova data sets. The next step in developing our understanding is to obtain accurate Cosmic Ray data near to the {\it knee}, and use unstable isotopes of Cosmic Ray nuclei at high energy to probe the "piston" driving the explosion. We plan to combine these data with the physics of the budding black hole which is probably forming in each of these stars to learn more.

Preprint ARTICLE | doi:10.20944/preprints201806.0098.v1

Effect of Reflector Geometry in the Annual Received Radiation of Low Concentration Photovoltaic Systems

João Paulo N. Torres, Carlos A. F. Fernandes, João Gomes, Bonfiglio Luc, Carine Giovinazzo, Olle Olsson, P. J. Costa Branco

Subject: Engineering, Energy And Fuel Technology Keywords: C -PV solar systems, MaReCo, ray-tracing, reflector design, Soltrace.

Online: 6 June 2018 (14:15:35 CEST)

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Preprint ARTICLE | doi:10.20944/preprints202404.1663.v1

Using a Combination of Novel Research Tools to Understand Social Interaction in the Drosophila melanogaster Model for Fragile X Syndrome

Maja STOJKOVIC, Milan PETROVIC, Maria CAPOVILLA, Sara MILOJEVIC, Vedrana Makevic, Dejan B. Budimirovic, Louise CORSCADDEN, Shuhan HE, Dragana Protic

Subject: Biology And Life Sciences, Behavioral Sciences Keywords: Drosophila melanogaster model of fragile X syndrome; FMR1 gene; fragile X syndrome; social anxiety; social interaction; social network analysis

Online: 25 April 2024 (14:25:46 CEST)

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Preprint REVIEW | doi:10.20944/preprints202410.1150.v1

How Cartilage and Bone Talk to Each Other to Allow Bone Grow?

Frank Hernández-García, Julián Rodríguez Suárez, Helena Gil Peña, José M López, Angela Fernández Iglesias, Rocío Fuente

Subject: Biology And Life Sciences, Cell And Developmental Biology Keywords: chondrocytes; osteocyte; osteogenesis; growth plate; x linked hypophosphatemic rickets

Online: 15 October 2024 (07:18:52 CEST)

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