Search | Preprints.org

Preprint ARTICLE | doi:10.20944/preprints202402.1597.v1

Bidirectional Two-Sample Mendelian Randomization Analysis Identifies Causal Associations between Gut Microbiome and Sleep-Related Traits

Mingxia Zhai, Weichen Song, Zhe Liu, Wenxiang Cai, Guanning Lin

Subject: Biology And Life Sciences, Other Keywords: Gut Microbiome; Bacterial Pathways; Sleep-related Traits; Mendelian Randomization; Causal Relationship

Online: 28 February 2024 (10:53:33 CET)

Show abstract| Download PDF| Supplementary Files| Share

Preprint ARTICLE | doi:10.20944/preprints202307.2112.v1

Why an Antioxidant Complex Twendee X® Prevent Dementia?

Fukka You, Yoshiaki Harakawa, Toshikazu Yoshikawa, Haruhiko Inufusa

Subject: Biology And Life Sciences, Aging Keywords: Alzheimer's disease; oxidative stress; Twendee X®︎; antioxidant; dementia; mitochondria; reactive oxygen species

Online: 1 August 2023 (02:49:59 CEST)

Show abstract| Download PDF| Supplementary Files| Share

Preprint COMMUNICATION | doi:10.20944/preprints202106.0394.v1

X-ray Diffraction of Alkali-Activated Materials with CBPD

Barbara Vojvodikova, Lukas Prochazka, Jana Bohacova

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: Cement By-Pass Dust; Blast Furnace Granulated Slag; Silica Fly Ash; Alkali-Activated Materials.

Online: 15 June 2021 (10:59:34 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202104.0079.v1

CdTe X/γ-ray Detectors With Different Contact Materials

Volodymyr Gnatyuk, Olena Maslyanchuk, Mykhailo Solovan, Viktor Brus, Toru Aoki

Subject: Physical Sciences, Acoustics Keywords: CdTe detectors; X-ray and gamma ray spectroscopy; Schottky contact; p-n junction; charge transport mechanism

Online: 2 April 2021 (18:15:52 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202012.0480.v1

X-Band/C-Band-Comparison of Ship Wake Detectability

Björn Tings, Sven Jacobsen, Stefan Wiehle, Egbert Schwarz, Holger Daedelow

Subject: Physical Sciences, Acoustics Keywords: Synthetic Aperture Radar; wake detection; detectability model; machine learning; Support Vector Machine; ocean surface imaging

Online: 18 December 2020 (16:23:03 CET)

Show abstract| Download PDF| Share

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)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202304.1114.v1

Intramolecularly Stabilized o-Carboranyl Aluminum Complexes: Synthesis, Characterization, and X-ray Structural Studies

Jong-Dae Lee, Honglae Sohn

Subject: Chemistry And Materials Science, Inorganic And Nuclear Chemistry Keywords: C,N-chelate ligand; o-carborane; organoaluminum complexes; X-ray crystallography; intramolecular stabilization

Online: 28 April 2023 (04:50:36 CEST)

Show abstract| Download PDF| Supplementary Files| Share

Preprint ARTICLE | doi:10.20944/preprints202207.0123.v1

Discontinuity in the Electronic Structure and Magnetic Order of β-Co_1+xGa₁-_x

Gerhard H. Fecher

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: CoGa; electronic structure; magnetism; binary alloys

Online: 7 July 2022 (09:44:18 CEST)

Show abstract| Download PDF| Share

Working Paper ARTICLE

Probing Electron Properties in ECR Plasmas Using X-Ray Bremsstrahlung and Fluorescence Emission

Bharat Mishra, Angelo Pidatella, Alessio Galatà, Sándor Biri, Richárd Rácz, Eugenia Naselli, Maria Mazzaglia, Giuseppe Torrisi, David Mascali

Subject: Physical Sciences, Applied Physics Keywords: ECR plasmas; warm electrons; self-consistent simulations; experimental benchmarking; volumetric and space-resolved spectra; X-ray fluorescence; bremsstrahlung; ray-tracing Monte Carlo techniques

Online: 5 October 2021 (08:58:06 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201911.0162.v1

Characterization Of Human Pluripotent Stem Cell-Derived Hepatocytes With Adult Features And Potential For Modeling Metabolic Diseases

Gustav Holmgren, Benjamin Ulfenborg, Annika Asplund, Karin Toet, Christian X Andersson, Ann Hammarstedt, Roeland Hanemaaijer, Barbara Küppers-Munther, Jane Synnergren

Subject: Biology And Life Sciences, Cell And Developmental Biology Keywords: human pluripotent stem cells; human stem cell-derived hepatocytes; in vitro; metabolic diseases; transcriptomics; maturation; characterization

Online: 14 November 2019 (11:24:24 CET)

Show abstract| Download PDF| Supplementary Files| Share

Preprint ARTICLE | doi:10.20944/preprints201803.0263.v1

Sustainable Boron Nitride Nanosheet-Reinforced Cellulose Nanofiber Composite Film with Improved Mechanical Properties and Oxygen Barrier without the Cost of Color and Brittleness

Hoang-Linh Nguyen, Zahid Hanif, Seul-A. Park, Bong Gill Choi, Thang Hong Tran, Dong Soo Hwang, Jeyoung Park, Sung Yeon Hwang, Dongyeop X. Oh

Subject: Chemistry And Materials Science, Polymers And Plastics Keywords: cellulose nanofiber; boron nitride nanosheet; oxygen barrier; food packaging

Online: 30 March 2018 (09:46:30 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202311.0286.v1

X- and Ku-Band Sar Backscattering Signatures of Snow-Covered Lake Ice and Sea Ice

Katriina Veijola, Juval Cohen, Marko Mäkynen, Juha Lemmetyinen, Jaan Praks, Bin Cheng

Subject: Environmental And Earth Sciences, Remote Sensing Keywords: remote sensing; synthetic aperture radar; sea ice; snow

Online: 6 November 2023 (11:29:29 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202309.1619.v1

Novel Carboxylation Method for Polyetheretherketone (PEEK) Surface Modification using Friedel–Crafts Acylation

Xinghui Lyu, Ryuhei Kanda, Susumu Tsuda, Yoshiya Hashimoto, Takamasa Fujii, Kosuke Kashiwagi

Subject: Chemistry And Materials Science, Biomaterials Keywords: polyetheretherketone; Friedel–Crafts acylation; carboxy group; chemical modification

Online: 25 September 2023 (05:24:48 CEST)

Show abstract| Download PDF| Supplementary Files| Share

Preprint ARTICLE | doi:10.20944/preprints202112.0429.v1

Sums and Partial Sums of Horadam Sequences: The Sum Formulas of $\sum_{k=0}^{n}x^{k}W_{k}$ and $ \sum_{k=n}^{n+m}x^{k}W_{k}$ via Generating Functions

Yüksel Soykan

Subject: Computer Science And Mathematics, Algebra And Number Theory Keywords: Horadam numbers; Horadam sequence; sum; partial sum; Fibonacci numbers; Lucas numbers

Online: 27 December 2021 (13:48:06 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202104.0663.v1

Everything Is A Circle: A New Universal Orbital Model

AslıPınar Tan

Subject: Physical Sciences, Astronomy And Astrophysics Keywords: Solar System, Planetary System, Planet, Satellite, Sun, Earth, Moon, Topology, Circle, Ellipse, Orbit, Trajectory, Orbital Mechanics

Online: 26 April 2021 (12:14:51 CEST)

Show abstract| Download PDF| Supplementary Files| Share

Based on measured astronomical position data of heavenly objects in the Solar System and other planetary systems, all bodies in space seem to move in some kind of elliptical motion with respect to each other. According to Kepler’s 1^st Law, “orbit of a planet with respect to the Sun is an ellipse, with the Sun at one of the two foci.” Orbit of the Moon with respect to Earth is also distinctly elliptical, but this ellipse has a varying eccentricity as the Moon comes closer to and goes farther away from the Earth in a harmonic style along a full cycle of this ellipse. In this paper, our research results are summarized, where it is first mathematically shown that the “distance between points around any two different circles in three dimensional space” is equivalent to the “distance of points around a vector ellipse to another fixed or moving point, as in two dimensional space”. What is done is equivalent to showing that bodies moving on two different circular orbits in space vector wise behave as if moving on an elliptical path with respect to each other, and virtually seeing each other as positioned at an instantaneously stationary point in space on their relative ecliptic plane, whether they are moving with the same angular velocity, or different but fixed angular velocities, or even with different and changing angular velocities with respect to their own centers of revolution. This mathematical revelation has the potential to lead to far reaching discoveries in physics, enabling more insight into forces of nature, with a formulation of a new fundamental model regarding the motions of bodies in the Universe, including the Sun, Planets, and Satellites in the Solar System and elsewhere, as well as at particle and subatomic level. Based on the demonstrated mathematical analysis, as they exhibit almost fixed elliptic orbits relative to one another over time, the assertion is made that the Sun, the Earth, and the Moon must each be revolving in their individual circular orbits of revolution in space. With this expectation, individual orbital parameters of the Sun, the Earth, and the Moon are calculated based on observed Earth to Sun and Earth to Moon distance data, also using analytical methods developed as part of this research to an approximation. This calculation and analysis process have revealed additional results aligned with observation, and this also supports our assertion that the Sun, the Earth, and the Moon must actually be revolving in individual circular orbits.

Preprint ARTICLE | doi:10.20944/preprints202110.0433.v1

Innovative Analytical Method for X-Ray Imaging and Space-Resolved Spectroscopy of ECR Plasmas

Eugenia Naselli, Richard Rácz, Sandor Biri, Maria Mazzaglia, Luigi Celona, Santo Gammino, Giuseppe Torrisi, Zoltan Perduk, Alessio Galatà, David Mascali

Subject: Physical Sciences, Fluids And Plasmas Physics Keywords: X-ray Imaging; Plasma Diagnostics; Electron Cyclotron Resonance Ion Sources; High Dynamical Range Analysis; Single-Photon-Counted Images; X-ray Spatially-resolved Spectroscopy

Online: 28 October 2021 (11:39:28 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202106.0141.v1

Assimilating X- and S-band Radar Data for a Heavy Precipitation Event in Italy

Valerio Capecchi, Andrea Antonini, Riccardo Benedetti, Luca Fibbi, Samantha Melani, Luca Rovai, Antonio Ricchi, Diego Cerrai

Subject: Environmental And Earth Sciences, Atmospheric Science And Meteorology Keywords: WRF model; 3D-Var data assimilation; radar data; short-range prediction; heavy precipitation event

Online: 4 June 2021 (12:54:12 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202007.0612.v1

Structural, Magnetic, and Mechanical Properties of Nd₁₆(Fe_76-xCo_x)B₈ 0 ≤ x ≤ 25 Alloys

Juan Sebastián Trujillo Hernández, Ahmed Talaat, Jesus A. Tabares, Dagoberto Oyola Lozano, Humberto Bustos Rodriguez, Hugo Martinez Sanchez, German A. Pérez Alcázar

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: Mössbauer spectroscopy; X-ray diffraction; Vibrating sample magnetometry; NdFeB magnets

Online: 25 July 2020 (15:54:31 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202005.0416.v1

All Femtosecond Optical Pump and X-Ray Probe: Holey-Axicon for Free Electron Laser

Vijayakumar Anand, Jovan Maksimovic, Tomas Katkus, Soon Hock Ng, Orestas Ulcinas, Mindaugas Mikutis, Justas Baltrukonis, Antanas Urbas, Gintas Slekys, H. Ogura, Daisuke Sagae, Tatiana Pikuz, Toshihiro Somekawa, Norimasa Ozaki, Arturas Vailionis, Gediminas Seniutinas, Vygantas Mizeikis, Karl Glazebrook, Jean P. Brodie, Paul R. Stoddart, Ludovic Rapp, Andrei V. Rode, Eugene G. Gamaly, Saulius Juodkazis

Subject: Physical Sciences, Quantum Science And Technology Keywords: X-rays; free electron laser (FEL); ultra-short phenomena; pump-probe; warm-dense matter; astrophotonics; co-axial volumetric interaction diagnostics

Online: 26 May 2020 (03:53:19 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201903.0038.v1

Miscanthus x giganteus Stem versus Leaf-derived Lignins Differing in Monolignol Ratio and Linkage

Michel Bergs, Georg Völkering, Thorsten Kraska, Ralf Pude, Xuan Tung Do, Peter Kusch, Yulia Monakhova, Christopher Konow, Margit Schulze

Subject: Engineering, Bioengineering Keywords: biomass; chemometrics, genotype; HSQC NMR; lignin; Miscanthus X giganteus; monolignol ratio; principal component analysis

Online: 4 March 2019 (10:30:04 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202110.0081.v1

Development and Validation of a Primary Care Electronic Health Record Phenotype to Study Migration and Health in the UK

Neha Pathak, Claire X Zhang, Yamina Boukari, Rachel Burns, Rohini Mathur, Arturo Gonzalez-Izquierdo, Spiros Denaxas, Pam Sonnenberg, Andrew Hayward, Robert W Aldridge

Subject: Medicine And Pharmacology, Other Keywords: Migration; Health; Electronic health records

Online: 5 October 2021 (11:40:07 CEST)

Show abstract| Download PDF| Supplementary Files| Share

Preprint ARTICLE | doi:10.20944/preprints202304.1219.v1

X-ray 3D-Imaging of Low-Density Laser Target Materials

Igor A. Artyukov, Natalia G. Borisenko, Gleb Bourenkov, Alexander A. Eriskin, Maxim Polikarpov, Alexander V. Vinogradov

Subject: Physical Sciences, Optics And Photonics Keywords: X-ray tomography; laser targets; synchrotron radiation; phase contrast; laser fusion; low density materials; hohl-raum

Online: 29 April 2023 (07:20:16 CEST)

Show abstract| Download PDF| Share

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)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202103.0408.v1

Classification of Chest X-ray Images Using Machine Learning Techniques

Abdelmoty Ahmed, Gamal Tharwat, Belgacem Bouallegue, Mahmoud Khattab, Ahmad Al Moustafa, Safaa Matter

Subject: Engineering, Automotive Engineering Keywords: Auto encoder; IoT; Image encryption; Artificial Neural Network; Machine Learning

Online: 16 March 2021 (09:32:11 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202102.0041.v1

Spectral X-ray CT for Fast NDT Using Discrete Tomography

D. Kamilis, S. Lee, J. Desjardins, N. Polydorides

Subject: Engineering, Automotive Engineering Keywords: Additive Manufacturing; 3D printing

Online: 1 February 2021 (14:07:02 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201903.0140.v1

Sigmoid functions for the smooth approximation to $ \vert{x}\vert $

Yogesh J. Bagul, Christophe Chesneau

Subject: Computer Science And Mathematics, Analysis Keywords: Sigmoid functions; error function; smooth approximation; Hyperbolic tangent

Online: 13 March 2019 (09:12:38 CET)

Show abstract| Download PDF| Share

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)

Show abstract| Download PDF| Share

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 ARTICLE | doi:10.20944/preprints202307.0559.v1

Experimental and Numerical Process Design for Press Partitioning of the New Q&P Steel 37SiB6

Christian Illgen, Sven Winter, Rico Haase, Marcus Böhme, Nadja Reiser, Ansgar Hatscher, Verena Psyk, Verena Kräusel, Martin F.-X. Wagner

Subject: Engineering, Mechanical Engineering Keywords: High-strength steel; Q&P process; retained austenite; press hardening; press partitioning

Online: 10 July 2023 (09:40:06 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202312.0306.v1

Towards Enhancing Automated Defect Detection (ADR) in Digital X-ray Radiography Applications: Synthesizing Training Data Through X-ray Intensity Distribution Modeling for Deep Learning Algorithms

Bata Hena, Ziang Wei, Luc Perron, Clemente Ibarra Castanedo, Xavier P. V. Maldague

Subject: Engineering, Industrial And Manufacturing Engineering Keywords: non-destructive testing; synthetic data; deep learning; automated defect recognition (ADR); digital X-ray radiography

Online: 6 December 2023 (04:00:32 CET)

Show abstract| Download PDF| Share

Preprint REVIEW | doi:10.20944/preprints202307.1708.v1

The Role of Cysteine Peptidases Cathepsins B, H, C, and X/Z in Neurodegeneration and Cancer

Veronika Stoka, Olga Vasiljeva, Hiroshi Nakanishi, Vito Turk

Subject: Biology And Life Sciences, Life Sciences Keywords: cysteine cathepsins; exopeptidases; neurodegeneration; cancer; neurodegenerative disorders

Online: 25 July 2023 (11:01:22 CEST)

Show abstract| Download PDF| Share

Preprint REVIEW | doi:10.20944/preprints202207.0341.v1

Regulation and Impact of Hepatitis B x Protein in Persistence and Oncogenesis of Hepatitis B Virus

Garima Garg, Shashank Purwar, Anirudh K. Singh, Ashish Kumar Vyas

Subject: Biology And Life Sciences, Virology Keywords: Hepatitis B Virus; Chronic Hepatitis infection; Oncogenesis

Online: 22 July 2022 (13:18:26 CEST)

Show abstract| Download PDF| Share

Preprint REVIEW | doi:10.20944/preprints202106.0574.v1

Viruses and Type 1 Diabetes: From Enteroviruses to the Virome

Sonia R Isaacs, Dylan B Foskett, Anna J Maxwell, Emily J Ward, Clare L Faulkner, Jessica Y X Luo, William D Rawlinson, Maria E Craig, Ki Wook Kim

Subject: Medicine And Pharmacology, Immunology And Allergy Keywords: enterovirus; type 1 diabetes; virome; vaccine; antiviral; islet autoimmunity; coxsackievirus; next-generation sequencing; unbiased sequencing

Online: 23 June 2021 (11:19:33 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201712.0018.v1

Radical Scavenging and Biological Activities of Representative Anthocyanin Groupings from Pigment-Rich Fruits and Vegetables

Federica Blando, Nadia Calabriso, Helge Berland, Gabriele Maiorano, Carmela Gerardi, Maria Annunziata Carluccio, Øyvind M. Andersen

Subject: Chemistry And Materials Science, Food Chemistry Keywords: non-acylated anthocyanins; anthocyanins with aromatic acylation; SAR; mahaleb cherry; blackcurrant; black carrot; ‘Sun Black’ tomato; VCAM-1; ICAM-1; endothelial adhesion molecules

Online: 4 December 2017 (07:04:17 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202305.1369.v1

Protective Effect of Amaranthus cruentus Seed Oil on the UVA Radiation-Induced Apoptosis in Human Skin Fibroblasts

Katarzyna Wolosik, Magda Chalecka, Jerzy Palka, Arkadiusz Surazynski

Subject: Medicine And Pharmacology, Dermatology Keywords: UVA radiation; oxidative stress; dermal fibroblasts; apoptosis; antioxidant; Amaranthus cruentus seed oil; sun-protective substance; pharmacy; cosmetology

Online: 19 May 2023 (03:49:20 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201811.0067.v1

HENNOVATION: Learnings from Promoting Practice-Led Multi-Actor Innovation Networks to Address Complex Animal Welfare Challenges within the Laying Hen Industry

L. van Dijk, H.J. Buller, H.J. Blokhuis, T. van Niekerk, E. Voslarova, X. Manteca, C.A. Weeks, D.C.J. Main

Subject: Biology And Life Sciences, Animal Science, Veterinary Science And Zoology Keywords: practice-led, innovation, networks, laying hen

Online: 2 November 2018 (14:33:15 CET)

Show abstract| Download PDF| Share

The Hennovation project, an EU H2020 funded thematic network, aimed to explore the potential value of practice-led multi-actor innovation networks within the laying hen industry. The project proposed that husbandry solutions can be practice-led and effectively supported to achieve durable gains in sustainability and animal welfare. It encouraged a move away from the traditional model of science providing solutions for practice, towards a collaborative approach where expertise from science and practice were equally valued. During the 32-month project, the team facilitated 19 multi-actor networks in 5 countries through 6 critical steps in the innovation process: problem identification, generation of ideas, planning, small scale trials, implementation and sharing with others. The networks included farmers, processors, veterinarians, technical advisors, market representatives and scientists. The interaction between the farmers and the other network actors, including scientists, was essential for farmer innovation. New relationships emerged between the scientists and farmers, based on experimental learning and the co-production of knowledge for improving laying hen welfare. The project demonstrated that a practice-led approach can be a major stimulus for innovation with several networks generating novel ideas and testing them in their commercial context. The Hennovation innovation networks not only contributed to bridging the science-practice gap by application of existing scientific solutions in practice but more so by jointly finding new solutions. Successful multi-actor, practice-led innovation networks appeared to depend upon the following key factors: active participation from relevant actors, professional facilitation, moderate resource support and access to relevant expertise. Farmers and processors involved in the project were often very enthusiastic about the approach, committing significant time to the network’s activities. It is suggested that the agricultural research community and funding agencies should place greater value on practice-led multi-actor innovation networks alongside technology and advisor focused initiatives to improve animal welfare and embed best practices.

Preprint ARTICLE | doi:10.20944/preprints202404.1334.v1

Contactless X-band Detection of Steel Bars in Concrete: A Preliminary Numerical and Experimental Analysis

Adriana Brancaccio, Simone Palladino

Subject: Other, Engineering Keywords: Contactless GPR; X-band measurements; Steel bars detection; Reinforced concrete; Microwave imaging

Online: 23 April 2024 (10:45:19 CEST)

Show abstract| Download PDF| Share

Preprint COMMUNICATION | doi:10.20944/preprints202401.1545.v1

Parenchymal Cavitations in Pulmonary Tuberculosis: Comparison between Lung Ultrasound, Chest X-ray and Computed Tomography

Diletta Cozzi, Maurizio Bartolucci, Federico Giannelli, Edoardo Cavigli, Irene Campolmi, Francesca Rinaldi, Vittorio Miele

Subject: Medicine And Pharmacology, Pulmonary And Respiratory Medicine Keywords: Lung Ultrasound; Chest x-ray; Tuberculosis; Computed Tomography; Infection

Online: 22 January 2024 (10:11:40 CET)

Show abstract| Download PDF| Share

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)

Show abstract| Download PDF| Share

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)

Show abstract| Download PDF| Supplementary Files| Share

Preprint ARTICLE | doi:10.20944/preprints202008.0472.v1

Computer Aid Screening of COVID19 using X-ray and CT Scan Images: A Comparative Study

Prabira Kumar Sethy, Chanki Pandey, Santi Kumari Behera

Subject: Engineering, Electrical And Electronic Engineering Keywords: Computer-aided Screening; Coronavirus; X-Ray; CT scan; Machine Learning; Transfer Learning; Deep Learning

Online: 21 August 2020 (05:17:46 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201801.0260.v1

Synthesis, X-ray Crystal Structures, Computational Studies and Catechol Oxidase Activity of New Acylhydrazone Derivatives

Khalid Karrouchi, Smaail Radi, Yousfi El Bekkaye, Nada Kheira Sebbar, Jamal Taoufi Taoufik, Younes Ouzidan, Hazem A. Ghabbour, Yahia Mabkhot, Salim Al-Showiman, Seham Alterary, M’hammed Ansar

Subject: Chemistry And Materials Science, Organic Chemistry Keywords: Acylhydrazone; Pyrazole; X-ray crystallography; DFT/B3LYP; Catecholase activity

Online: 28 January 2018 (12:44:49 CET)

Show abstract| Download PDF| Supplementary Files| Share

Preprint ARTICLE | doi:10.20944/preprints202004.0437.v1

A Study On Sums of Cubes of Generalized Fibonacci Numbers: Closed Formulas of $\sum_{k=0}^{n}x^{k}W_{k}^{3}$ and $\sum_{k=1}^{n}x^{k}W_{-k}^{3} $

Yüksel Soykan

Subject: Computer Science And Mathematics, Algebra And Number Theory Keywords: Fibonacci numbers; Lucas numbers; Pell numbers; Jacobsthal numbers; sum formulas

Online: 24 April 2020 (10:35:07 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202404.0960.v1

Source Design Optimization for Depth Image Reconstruction in X-ray Imaging

Hamid Fathi, Tristan Van Leeuwen

Subject: Computer Science And Mathematics, Computational Mathematics Keywords: Laminography; Limited angle tomography; Depth image

Online: 15 April 2024 (13:47:51 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202311.1495.v1

Which Statistical Test Should We Use for 2 x 2 Tables?

Peter Cahusac

Subject: Medicine And Pharmacology, Epidemiology And Infectious Diseases Keywords: 2 x 2 table; χ2 test; likelihood ratio test; G-test; likelihood; odds ratio; data integrity; too good to be true

Online: 23 November 2023 (09:52:23 CET)

Show abstract| Download PDF| Supplementary Files| Share

Preprint ARTICLE | doi:10.20944/preprints202310.0483.v1

Deep Learning-based Hip X-ray Image Analysis for Predicting Osteoporosis

Shang-Wen Feng, Szu-Yin Lin, Yi-Hung Chiang, Meng-Han Lu, Yu-Hsiang Chao

Subject: Computer Science And Mathematics, Artificial Intelligence And Machine Learning Keywords: osteoporosis; bone mineral density; X-ray imaging; machine learning; deep learning

Online: 10 October 2023 (03:17:59 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202209.0468.v1

Scattering of Ultrashort X-Ray Pulses on Diamonds with NV Centers

Marat Eseev, Ksenia Makarova, Dmitry Makarov

Subject: Physical Sciences, Radiation And Radiography Keywords: Diamond; NV centre; ultrashort pulse; scattering; scattering spectra; X-ray diffraction analysis

Online: 29 September 2022 (11:04:56 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201810.0534.v1

X-ray Micro-Ct Supporting the South African Additive Manufacturing Community ^†

Anton du Plessis, S.G. le Roux

Subject: Engineering, Industrial And Manufacturing Engineering Keywords: non-destructive testing; process optimization; porosity; pore hotspots; image-based simulations; 3D image analysis

Online: 23 October 2018 (09:58:18 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201809.0383.v1

Achieving a Good Crystal System for Crystallographic X-ray Fragment Screening

Patrick M. Collins, Alice Douangamath, Romain Talon, Alexandre Dias, José Brandão-Neto, Tobias Krojer, Frank von Delft

Subject: Biology And Life Sciences, Biochemistry And Molecular Biology Keywords: fragment screening; XChem; protein crystallisation; X-ray crystallography; diamond light source; I04-1; structural genomics consortium

Online: 19 September 2018 (11:37:41 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202306.0167.v1

1,2-Diphenyl-o-carborane and its Chromium Derivatives: Synthesis, Characterization, X-ray Structural Studies, and Biological Evaluations

Tae-Jin Ha, Dong-Kyung Im, Seung-Min Kim, Jong-Dae Lee

Subject: Chemistry And Materials Science, Applied Chemistry Keywords: 1,2-Diphenyl-o-carborane; Chromium Metal Complexes; Boron Neutron Capture Therapy; Biological Evaluation; Cytotoxicity

Online: 2 June 2023 (09:18:49 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202312.1334.v1

Microstructure and Properties of FeAlC-x(WC-Co) Composite Coating Prepared through Plasma Transfer Arc Cladding

Bai-Yang Chen, Bo Zhang, Daming Zhao, Peihu Gao, Anton Naumov, Qi-bao Li, Fei Li, Zhong Yang, Yongchun Guo, Jian-Ping Li, Bao-Long Wu, Jin-Yuan Gong, Jia-Wei Liu

Subject: Chemistry And Materials Science, Surfaces, Coatings And Films Keywords: plasma cladding; coating; compacted graphite cast iron; wear resistance

Online: 18 December 2023 (12:19:28 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202308.1135.v1

Time and Spatially Resolved Operando Small-Angle X-ray Scattering Measurements during Injection Moulding of Plastics

Geoffrey R. Mitchell, Matteo Arioli, Anabela Pavia Massano, Daniel Pedra Da Silva, Fabio A. Gameiro, Pedro Carreira, Marc Malfois, Joao Matias, Paula Christina Pascoal-Faria, Artur Mateus

Subject: Engineering, Industrial And Manufacturing Engineering Keywords: injection moulding; small-angle X-ray scattering; morphology; isotactic polypropylene

Online: 15 August 2023 (15:50:00 CEST)

Show abstract| Download PDF| Share

Preprint COMMUNICATION | doi:10.20944/preprints202304.1260.v1

Generation of Ultrashort Pulses in XUV and X-ray FELs via an Excessive Reverse Undulator Taper

Evgeny Schneidmiller, Matthias Dreimann, Marion Kuhlmann, Juliane Roensch-Schulenburg, Helmut Zacharias

Subject: Physical Sciences, Optics And Photonics Keywords: Free Electron Laser; SASE FEL; X-Ray FEL; Ultrashort pulses

Online: 30 April 2023 (04:45:05 CEST)

Show abstract| Download PDF| Share

Preprint COMMUNICATION | doi:10.20944/preprints202112.0492.v1

Secondary Structure and X-Ray Crystallographic Analysis of the Glideosome-Associated Connector (GAC) from Toxoplasma gondii

Amit Kumar, Xu Zhang, Oscar Vadas, Fisentzos Stylianou, Nicolas Dos Santos Pacheco, Sarah Rouse, Marc Morgan, Dominique Soldati-Favre, Stephen Matthews

Subject: Biology And Life Sciences, Biochemistry And Molecular Biology Keywords: glideosome-associated connector; protein; crystallography; structure

Online: 30 December 2021 (17:13:26 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202105.0715.v1

Raman and X-ray Photoelectron Spectroscopic Study of Aqueous Thiol-Capped Ag-Zn-Sn-S Nanocrystals

Volodymyr Dzhagan, Oleksandr Selyshchev, Yevhenii Havriliuk, Nazar Mazur, Oleksandra Raievska, Oleksandr Stroyuk, Serhiy Kondratenko, Alexander Litvinchuk, Mikhailo Valakh, Dietrich R.T. Zahn

Subject: Chemistry And Materials Science, Nanotechnology Keywords: colloidal nanocrystals; Ag2ZnSnS4; phonons; Ag-Zn-S; Ag-Sn-S; non-stoichiometry; secondary phase; XPS; FTIR

Online: 31 May 2021 (08:33:21 CEST)

Show abstract| Download PDF| Supplementary Files| Share

Preprint ARTICLE | doi:10.20944/preprints202402.1502.v1

How do Molecular Tweezers bind to Proteins? Lessons from X-ray Crystallography

Arthur T. Porfetye, Patricia Stege, Rocio Rebollido-Rios, Daniel Hoffmann, Thomas Schrader, Ingrid R. Vetter

Subject: Biology And Life Sciences, Life Sciences Keywords: protein crystallography; molecular tweezers; supramolecular chemistry; 14-3-3 proteins; P5CDH Pyrroline-5-carboxyl-dehydrogenase

Online: 27 February 2024 (14:16:29 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202310.1970.v1

Controlling Gut Microbiota by Twendee X®︎ Also Contributes to Dementia Prevention

Fukka You, Yoshiaki Harakawa, Toshikazu Yoshikawa, Haruhiko Inufusa

Subject: Biology And Life Sciences, Aging Keywords: Alzheimer’s disease; Dementia; Twendee X; microbiome; gut microbiota; Oxidative stress; Quality of life; antioxidant

Online: 31 October 2023 (05:16:08 CET)

Show abstract| Download PDF| Share

The human gut microbiota (GM) is a complex and dynamic ecosystem that hosts trillions of commensal and potentially pathogenic microorganisms. It is crucial in protecting humans from pathogens and in maintaining immune and metabolic homeostasis. Numerous studies have demonstrated that GM has a significant impact on health and disease, including Alzheimer’s disease (AD). AD is a progressive neurodegenerative disorder characterized by impaired short-term memory and cognitive deficits. Patients with AD have been reported to exhibit abnormalities in GM density and species composition. Oxidative stress (OS) has been implicated in the onset and progression of AD, however, the relationship between OS and gut microbiota in AD onset and progression is not clear. Twendee X®︎ (TwX), an oral supplement consisting of 8 active ingredients, has been shown to prevent dementia in mild cognitive impairment (MCI) in humans and substantially improve cognitive impairment in mouse models of AD. This positive effect is achieved through the potency of the combined antioxidants that regulate OS and therefore similar results cannot be achieved by a single antioxidant ingredient. To examine the impact of long-term OS elevation as seen in AD on the body and GM, we examined GM alterations during the initial OS elevation using a rat 2-week OS loading model, and examined the effects of TwX on OS and GM. Furthermore, using a questionnaire survey and fecal samples, we analyzed the impact of TwX on healthy individuals' gut bacteria and the associated effect on their quality of life (QOL). TwX was found to increase the number of bacteria species and their diversity in GM, as well as butyrate-producing bacteria, which tend to be reduced in AD patients. Additionally, TwX improved defecation condition and QOL. The gut bacteria function as part of the homeostatic function during OS elevation, and prophylactic administration of TwX strengthened this function. The results suggests that the preventative effect of TwX on dementia may involve the GM in addition to the other effects previously demonstrated.

Preprint ARTICLE | doi:10.20944/preprints202211.0515.v1

COVID-19 Classification on Chest X-ray Images Using Deep Learning Methods

Marios Constantinou, Themis Exarchos, Aristidis G. Vrahatis, Panagiotis Vlamos

Subject: Computer Science And Mathematics, Artificial Intelligence And Machine Learning Keywords: Deep Learning; COVID-19; ResNet50; ResNet101; DenseNet121; DenseNet169; InceptionV3; Transfer Learning; Chest X-Rays

Online: 28 November 2022 (12:34:06 CET)

Show abstract| Download PDF| Share

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)

Show abstract| Download PDF| Supplementary Files| Share

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)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201902.0241.v1

Super Long Green Persistent Luminescence from X-Ray Excited β-NaYF₄: Tb³⁺

Yue Hu, Yanmin Yang, Xiaoxiao Li, Xin Wang, Yunqian Li, Tianyi Li, Hongwu Zhang

Subject: Physical Sciences, Optics And Photonics Keywords: Long afterglow; tunneling model; F centers; PDT

Online: 26 February 2019 (12:45:04 CET)

Show abstract| Download PDF| Supplementary Files| Share

Preprint ARTICLE | doi:10.20944/preprints201807.0340.v1

Dialectical GAN for SAR Image Translation: From Sentinel-1 to TerraSAR-X

Dongyang Ao, Corneliu Octavian Dumitru, Gottfried Schwarz, Mihai Datcu

Subject: Engineering, Electrical And Electronic Engineering Keywords: dialectical generative adversarial network; image translation; Sentinel-1; TerraSAR-X

Online: 19 July 2018 (04:46:22 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202302.0459.v1

Copper Ferrite Nanoparticles Synthesized Using Anion Exchange Resin: Influence of Synthesis Parameters on the Cubic Phase Stability

Svetlana Saikova, Aleksandr Pavlikov, Denis Karpov, Aleksandr Samoilo, Sergey Kirik, Mikhail Volochaev, Tatyana Trofimova, Dmitry Velikanov, Artem Kuklin

Subject: Chemistry And Materials Science, Nanotechnology Keywords: copper ferrite; magnetic properties; anion-exchange resin precipitation; magnetic nanoparticles

Online: 27 February 2023 (08:38:56 CET)

Show abstract| Download PDF| Share

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)

Show abstract| Download PDF| Supplementary Files| Share

Preprint REVIEW | doi:10.20944/preprints202307.0605.v1

Insight and Recommendations for Fragile X Premutation Associated Conditions from the 5th International Conference on FMR1 Premutation

Flora Tassone, Dragana Protic, Emily Allen, Alison D. Archibald, Anna Baud, W Ted Brown, Dejan B. Budimirovic, Jonathan Cohen, Brett Dufour, Rachel Eiges, Nicola Elvassore, Lidia V. Gabis, Samantha J Grudzien, Deborah Hall, David Hessl, Abigail Hogan, Jessica Ezzell Hunter, Peng Jin, Poonnada Jiraanont, Jessica Klusek, R. Frank Kooy, Claudine M Kraan, Cecilia Laterza, Andrea Lee, Karen Lipworth, Molly Losh, Danuta Z Loesch, Reymundo Lozano, Marsha Mailick, Apostolos Manolopoulos, Verónica Martínez-Cerdeño, Yingratana Amabel McLennan, Robert M. Miller, Alice Montanaro, Matthew W. Mosconi, Sarah Potter, Melissa Raspa, Susan M. Rivera, Katharine Shelly, Peter K. Todd, Katarzyna Tutak, Jun Yi Wang, Anne C Wheeler, Tri Indah Winarni, Marwa Zafarullah, Randi Hagerman

Subject: Medicine And Pharmacology, Medicine And Pharmacology Keywords: FMR1 premutation; FXPAC; FXTAS; FXAND; FXPOI; FMR1 molecular and clinical

Online: 10 July 2023 (10:27:07 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202305.0709.v1

Enhanced Alkaline Hydrogen Evolution on Gd1.0/Ndx (X = 0.5, 1.0, 3.0, and 6.0%)-Doped TiO₂ Bimetallic Electrocatalysts

Mohammed Alsawat, Naif Ahmed Alshehri, Abdallah A. Shaltout, Sameh I Ahmed, Hanan M. O. Al-Malki, Rabah Boukherroub, Mohammed A Amin, Mohamed M Ibrahim

Subject: Chemistry And Materials Science, Electrochemistry Keywords: Titanium dioxide; Rare earth-doped TiO2 nanoparticles; Electrochemical Hydrogen generation; Alkaline

Online: 10 May 2023 (08:23:46 CEST)

Show abstract| Download PDF| Supplementary Files| Share

The work reports a facile synthesis of high thermally-stable nanocrystalline anatase TiO2 nanoparticles (NPs) doped with different atomic concentrations (0.5, 1.0, 3.0, and 6.0%) of Gd3+ and Nd3+ ions by a template-free and one-step solvothermal process, using titanium(IV) butoxide as titanium precursor and dimethyl sulfoxide (DMSO) as solvent. The structure and morphology of the Gd3+, Nd3+, and 0.5%Gd3+-0.5%Nd3+/doped TiO2 NPs have been characterized by using various analytical techniques. The Gd3+/ and Nd3+/TiO2 molar ratios were found to have a pronounced impact on the crystalline structure, size, and morphology of TiO2 NPs. X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) studies revealed the proper substitution of Ti4+ by Gd3+ and Nd3+ ions in the TiO2 host lattice. The as-prepared Gdx/TiO2, Ndx/TiO2, and Gd1.0/Ndx/TiO2 bimetallic NPs, x = 0.5, 1.0, 3.0, and 6%, have been investigated as electrocatalysts for hydrogen evolution reaction (HER) in 1.0 M KOH solution using a variety of electrochemical techniques. At any doping percentage, the Gd1.0/Ndx/TiO2 bimetallic NPs showed higher HER catalytic performance than their corresponding counterparts i.e. Gdx/TiO2 and Ndx/TiO2. Upon increasing the Nd content from 0.5 to 6.0%, the HER catalytic performance of the Gd1.0/Ndx/TiO2 bimetallic NPs was generally enhanced. Among the studied materials, the bimetallic Gd1.0/Nd6.0/TiO2 NPs emerged as the most promising catalyst with an onset potential of -22 mV vs. RHE, a Tafel slope of 109 mV dec-1, and an exchange current density of 0.72 mA cm-2. Such HER electrochemical kinetic parameters are close to those recorded by the commercial Pt/C (onset potential: -15 mV, Tafel slope: 106 mV dec-1, and exchange current density: 0.80 mA cm-2), and also comparable with those measured by the most active electrocatalysts reported in the literature. The synergistic interaction of Gd and Nd is thought to be the major cause of the bimetallic catalyst's activity.

Preprint REVIEW | doi:10.20944/preprints202211.0204.v1

Progress and Perspectives of Spectroscopic Studies at Carbon K-edge Using Novel Soft X-ray Pulsed Sources

Zeinab Ebrahimpour, Marcello Coreno, Luca Giannessi, Massimo Ferrario, Augusto Marcelli, Federico Nguyen, Seyed Javad Rezvani, Francesco Stellato, Fabio Villa

Subject: Physical Sciences, Condensed Matter Physics Keywords: Soft X-ray FEL; HHG pulses; time-resolved X-ray spectroscopy; Carbon K-edge; Conical inter-sections; EuPRAXIA@SPARC_LAB

Online: 10 November 2022 (11:47:05 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201809.0359.v1

In-Situ Coherent X-Ray Diffraction during Three-Point Bending of a Au Nanowire: Visualization and Quantification

Anton Davydok, Thomas W. Cornelius, Zhe Ren, Cedric Leclere, Gilbert Chahine, Tobias Schülli, Florian Lauraux, Gunter Richter, Olivier Thomas

Subject: Chemistry And Materials Science, Nanotechnology Keywords: synchrotron X-ray diffraction; nano-structures; nano mechanics

Online: 18 September 2018 (16:50:04 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201805.0171.v1

Fracture Reconstruction and Analysis of Low Permeability Carbonates using x-ray Tomography for Comparison with Outcrop Data

Stephanie G. Zihms, Helen Lewis, Tiago Siqueira de Miranda, Stephen A. Hall, James M. Somerville

Subject: Environmental And Earth Sciences, Geography Keywords: geomechanics; fractures; multi-scale; x-ray tomography; carbonates

Online: 10 May 2018 (16:24:06 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202104.0164.v1

A Two-Fluid Model for High Viscosity Upward Annular Flow in Vertical Pipes

Joseph X. F. Ribeiro, Ruiquan Liao, Aliyu M. Aliyu, Salem K. B. Ahmed, Yahaya D. Baba, Almabrok A. Almabrok, Archibong Archibong-Eso, Zilong Liu

Subject: Engineering, Automotive Engineering Keywords: two-phase flow; interfacial friction factor; vertical pipes; higher viscosity, pressure drop

Online: 6 April 2021 (10:10:47 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202404.1001.v1

Study on Local Vibration Control of 100m X-BOW Polar Exploration Cruise Ship

Guo he Jiang, Jia chen Chen, Hao Guo, Gang Wu, Zhen zhen Liu

Subject: Engineering, Marine Engineering Keywords: polar exploration cruise; frequency response analysis; modal equivalent mass; tuned mass dampers; mass ratio

Online: 16 April 2024 (11:37:23 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202311.0747.v1

Do the Laser-Printed 3D-Structures Withstand the X-ray Synchrotron Radiation Beam?

Mikhail Danilkin, Alexei Vitukhnovsky, Danila Kolymagin, Elena Perevedentseva, Alexander Gritsienko, Yury Tokunov, Ivan Zakharchuk, Alexei Primenko, Grigory Prutskov

Subject: Physical Sciences, Applied Physics Keywords: Additive manufacturing; direct laser writing; X-ray optics; radiation effects in polymer materials; thermoluminescent radiation detectors

Online: 13 November 2023 (10:50:55 CET)

Show abstract| Download PDF| Share

Preprint TECHNICAL NOTE | doi:10.20944/preprints202309.1575.v1

Study of the Calibration of Semiconductor Survey Meters Using Medical X-ray Equipment

Katsunao Suzuki, Toru Negishi, Yoh Kato, Yasuhisa Kono, Michiharu Sekimoto

Subject: Physical Sciences, Radiation And Radiography Keywords: semiconductor survey meter; calibration; medical X-ray system; calibration factor; time constant

Online: 25 September 2023 (11:44:59 CEST)

Show abstract| Download PDF| Share

Preprint REVIEW | doi:10.20944/preprints202308.1571.v1

Heavy Metal-Based Nanoparticles as High-Performance X-Ray Computed Tomography Contrast Agents

Mohammad Yaseen Ahmad, Shuwen Liu, Tirusew Tegafaw, Abdullah Khamis Ali Al Saidi, Dejun Zhao, Ying Liu, Sung-Wook Nam, Yongmin Chang, Gang Ho Lee

Subject: Chemistry And Materials Science, Medicinal Chemistry Keywords: heavy metal-based nanoparticles; X-ray attenuation; contrast agents; in vitro phantom imaging; in vivo imaging

Online: 23 August 2023 (07:54:09 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202305.0513.v1

Classification of Dental Teeth X-Ray Images Using a Deep Learning CNN Model

Dankai Liao, Carol Anne Hargreaves

Subject: Computer Science And Mathematics, Artificial Intelligence And Machine Learning Keywords: deep learning; medical imaging; clinical decision support system; Teeth X-Rays; Images; CNN model; transfer learning; NASNetMobile feature extractor; classification model

Online: 8 May 2023 (10:25:36 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202206.0336.v1

Cell division controls final fruit size in three apple (Malus x domestica) cultivars

Siti Khadijah A. Karim, Andrew C. Allan, Robert J. Schaffer, Karine M. David

Subject: Biology And Life Sciences, Agricultural Science And Agronomy Keywords: apple; fruit size; fruit development; cell division; cell expansion; ripening

Online: 24 June 2022 (09:46:09 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202107.0566.v2

Degradation Analysis of Thin Mg-xAg Wires Using X-Ray Near-Field Holotomography

Sebastian Meyer, Andreas Wolf, Daniela Sanders, Kamila Iskhakova, Hanna Ćwieka, Stefan Bruns, Silja Flenner, Imke Greving, Johannes Hagemann, Regine Willumeit-Römer, Björn Wiese, Berit Zeller-Plumhoff

Subject: Chemistry And Materials Science, Biomaterials Keywords: X-ray computed tomography; magnesium-silver alloy; wire; degradation; near-field holotomography

Online: 8 December 2021 (14:26:38 CET)

Show abstract| Download PDF| Share

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

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

Mark Baldry, Nicholas Gurieff, Declan Keogh

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

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

Show abstract| Download PDF| Share

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)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202401.0980.v1

Modified Bertaut Method to Determine Cation Distribution and Valence State in Powders of Spinels Through X-ray Diffraction

Jose Alonso Hernandez de la Cruz, Pierre Giovanni Mani Gonzalez

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: XRD; spinels; vacancies; optimization; cation distribution

Online: 12 January 2024 (08:47:37 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202401.0931.v1

Applying YOLO-V8 and X-ray Morphology Analysis to Assess the Vigor of Brachiaria brizantha cv. Xaraés Seeds

Daniel de Amaral Da Silva, Emannuel Diego Gonçalves De Freitas, Haynna Fernandes Abud, Danielo G. Gomes

Subject: Biology And Life Sciences, Food Science And Technology Keywords: Deep learning; Seed quality; X-ray imaging

Online: 11 January 2024 (12:20:53 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202310.1356.v1

Ammonium and Phosphonium Salts Containing Monoanionic Iron(II) Half-Sandwich Complexes [Fe(5-Cp*)X2] (X = Cl – I)

Julian Zinke, Clemens Bruhn, Ulrich Siemeling

Subject: Chemistry And Materials Science, Inorganic And Nuclear Chemistry Keywords: crystal structures; cyclopentadienyl complexes; half-sandwich complexes; halides; iron

Online: 20 October 2023 (12:18:47 CEST)

Show abstract| Download PDF| Supplementary Files| Share

Preprint ARTICLE | doi:10.20944/preprints202310.1260.v1

Proton Compared to X-irradiation Induces Different Protein Profiles in Oral Cancer Cells and Their Derived Extracellular Vesicles

Inga Solgård Juvkam, Olga Zlygosteva, Mateusz Sitarz, Bernd Thiede, Brita Singers Sørensen, Eirik Malinen, Nina Jeppesen Edin, Tine Merete Søland, Hilde Kanli Galtung

Subject: Biology And Life Sciences, Biochemistry And Molecular Biology Keywords: Protons; X-rays; oral squamous cell carcinoma; extracellular vesicles; non-targeted effects of radiation

Online: 19 October 2023 (09:59:48 CEST)

Show abstract| Download PDF| Supplementary Files| Share

Preprint ARTICLE | doi:10.20944/preprints202305.2223.v1

The Impact of Mild Chronic Stress and Maternal Experience in the Fmr1 Mouse Model of Fragile X Syndrome

Enejda Subashi, Valerie Lemaire, Valeria Petroni, Susanna Pietropaolo

Subject: Biology And Life Sciences, Neuroscience And Neurology Keywords: Neurodevelopmental disorders; unpredictable stress; ultrasonic communication; Fmr1; maternal care

Online: 31 May 2023 (10:35:35 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202211.0389.v1

Thermal Expansion and Rattling Behavior of Gd-filled Co₄Sb₁₂ Skutterudite Determined by High-Resolution Synchrotron X-Ray Diffraction

J. E. Rodrigues, Javier Gainza, Federico Serrano-Sánchez, Romualdo S. Silva Jr, Catherine Dejoie, Norbert M. Nemes, Oscar J. Dura, Jose Luis Martinez, José Antonio Alonso

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: skutterudites; CoSb3; thermal expansion; rattling effect; thermoelectrics

Online: 21 November 2022 (11:48:31 CET)

Show abstract| Download PDF| Share

Preprint REVIEW | doi:10.20944/preprints202112.0438.v1

X-Ray Diffraction Techniques for Mineral Characterization: A Review for Engineers of the Fundamentals, Applications, and Research Directions

Asif Ali, Yi Wai Chiang, Rafael M. Santos

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: X-ray diffraction; Mineral characterization; Crystal structure; Bragg’s law; Lattice parameters; Crystallography; Unit cell

Online: 27 December 2021 (15:53:09 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201806.0328.v1

Mechanical Properties of Ti-alloy Joint with Ti₂₀Zr₂₀Cu_60-xNi_x(x = 10, 20, 30, 40 and 50) Filler Metal

Rama Rao Panugothu, Bhaskar Majumdar, Anil Kumar Bhatnagar

Subject: Chemistry And Materials Science, Materials Science And Technology Keywords: vacuum brazing; metallic glasses; Ti-alloy; mechanical properties

Online: 21 June 2018 (04:12:23 CEST)

Show abstract| Download PDF| Share

Preprint CONFERENCE PAPER | doi:10.20944/preprints201612.0045.v2

Constraints on Dark Energy Models from Selected Galaxy Clusters (S-Z + X-Ray Data) and Gravitational Lensing Data

Alexander Bonilla Rivera, Jairo Ernesto Castillo Hernandez

Subject: Physical Sciences, Atomic And Molecular Physics Keywords: Sunyaev-Zeldovich effect, galaxy clusters, dark energy models

Online: 10 December 2016 (08:24:22 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202306.0025.v1

Structural Assessment Based on Vibration Measurement Test Combined With an Artificial Neural Network for the Steel Truss Bridge

Minh Quang Tran, Hélder S Sousa, Thuc V Ngo, Binh Duc Nguyen, Quyền Nguyễn, Huan X Nguyen, Edward Baron, José Matos, Son Ngoc DANG

Subject: Engineering, Civil Engineering Keywords: ANN; FEM; damage assessment; structural health monitoring; steel truss bridge

Online: 1 June 2023 (04:38:41 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202403.1012.v1

Bone Regeneration with Stem Cells from Dental Pulp in a Rat Experimental Model

Haifa Hamad-Alrashid, Sandra Muntión, Fermín Sánchez-Guijo, Javier Borrajo-Sánchez, Felipe Parreño-Manchado, M. Begoña García-Cenador, F. Javier García-Criado

Subject: Chemistry And Materials Science, Biomaterials Keywords: DPSC; biomaterials; bone defect; osteogenesis; bone regeneration; angiogenesis; bioengineering; dental pulp; stem cells; bone graft

Online: 18 March 2024 (10:24:20 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202402.0555.v1

The Potential of Twendee X®︎ as a Safe Antioxidant Treatment for Systemic Sclerosis

Fukka You, Carole Nicco, Yoshiaki Harakawa, Toshikazu Yoshikawa, Haruhiko Inufusa

Subject: Biology And Life Sciences, Life Sciences Keywords: Oxidative stress; Twendee X®︎; Antioxidant; Systemic sclerosis; autoimmunity

Online: 9 February 2024 (07:37:59 CET)

Show abstract| Download PDF| Share

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)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202312.1618.v1

Proof of the Riemann Hypothesis Using the Decomposition Zeta(s) = X(s) – Y(s)

Pedro Caceres

Subject: Computer Science And Mathematics, Algebra And Number Theory Keywords: riemann hypothesis; prime numbers; infinite power series; number theory

Online: 21 December 2023 (08:06:19 CET)

Show abstract| Download PDF| Share

Prime numbers are the atoms of mathematics and mathematics is needed to make sense of the real world. Finding the Prime number structure and eventually being able to crack their code is the ultimate goal in what is called Number Theory. From the evolution of species to cryptography, Nature finds help in Prime numbers. One of the most important advances in the study of Prime numbers was the paper by Bernhard Riemann in November 1859 called “Ueber die Anzahl der Primzahlen unter einer gegebenen Grösse” (On the number of primes less than a given quantity). In that paper, Riemann gave a formula for the number of primes less than x in terms the integral of 1/log(x) and the roots (zeros) of the zeta function defined by: Where ζ(z) is a function of a complex variable z that analytically continues the Dirichlet series. Riemann also formulated a conjecture about the location of the zeros of RZF, which fall into two classes: the "trivial zeros" -2, -4, -6, etc., and those whose real part lies between 0 and 1. Riemann's conjecture Riemann hypothesis [RH] was formulated as this: [RH] The real part of every nontrivial zero z* of the RZF is 1/2. Proving the RH is, as of today, one of the most important problems in mathematics. In this paper we will provide a proof of the RH. The proof of the RH will be built following these five parts: PART 1: Description of the RZF PART 2: The C-transformation PART 3: Application of the C-transformation to in Re(z) 0 to obtain ζ(z)=X(z)-Y(z) PART 4: Analysis of the values of z such that X(z)=Y(z), and |X(z)|=|Y(z)|, that equates to ζ(z)=0 Proof that |X(z)|=|Y(z)| only if Re(z)=1/2 Conclude that ζ(z)=0 only if Re(z)=1/2 for Re(z) 0 PART 5: We will also prove that all non-trivial zeros of ζ(z) in the critical line of the form are not distributed randomly. There is a relationship between the values of those zeros and the Harmonic function that leads to an algebraic relationship between any two zeros.

Preprint ARTICLE | doi:10.20944/preprints202311.1566.v1

Scattering of Ultrashort X-ray Pulses from Oriented NV Centers in the Diamond Structure

Dmitry Makarov, Marat Eseev, Eugeny Gusarevich, Viktor Matveev, Ksenia Makarova, Mark Borisov

Subject: Physical Sciences, Radiation And Radiography Keywords: Diamond; NV centers; scattering; X-ray diffraction analysis; orientation of NV centers

Online: 24 November 2023 (10:38:00 CET)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202311.1452.v1

Fast Bimetallic Nanoalloy Quantification Method Using X-ray Fluorescence Spectroscopy for High-Throughput Experiments

Le Nguyen-Vu

Subject: Chemistry And Materials Science, Analytical Chemistry Keywords: quantitative analysis; X-ray fluorescence spectroscopy; bimetallic nanoparticle; nanoparticle concentration

Online: 23 November 2023 (03:37:14 CET)

Show abstract| Download PDF| Share

Preprint DATA DESCRIPTOR | doi:10.20944/preprints202308.1701.v1

A Dataset of Search Interests Related to Disease X Originating from Different Geographic Regions

Nirmalya Thakur, Kesha A. Patel, Isabella Hall, Yuvraj Nihal Duggal, Shuqi Cui

Subject: Public Health And Healthcare, Public Health And Health Services Keywords: disease X; big data; data science; data analysis; dataset development; database; google trends; data mining; healthcare; epidemiology

Online: 24 August 2023 (05:48:54 CEST)

Show abstract| Download PDF| Share

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)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints201807.0448.v1

Porosity Characterization of Cold Sprayed Stainless Steel Coating Using Three-Dimensional X-ray Microtomography

Yingying Wang, Jérôme Adrien, Bernard Normand

Subject: Chemistry And Materials Science, Surfaces, Coatings And Films Keywords: X-ray tomography; cold spray; porosity; stainless steel; three-dimensional imaging

Online: 24 July 2018 (07:50:30 CEST)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202311.1050.v1

Photo- and X-ray Induced Cytotoxicity of CeF₃-YF₃-TbF₃ Nano-Particle- Polyvinylpyrrolidone –“Radachlorin” Composites for Combined Photodynamic Therapy

Alina Khusainova, Alexey Nizamutdinov, Nail Shamsutdinov, Svetlana Kalinichenko, Damir Safin, Marat Gafurov, Elena Lukinova, Sergey Batygov, Sergey Kuznetsov, Sergey Zinchenko, Pavel Zelenikhin, Maksim Pudovkin

Subject: Physical Sciences, Optics And Photonics Keywords: Photodynamic therapy; combined photodynamic therapy; Radachlorin; nanoparticle-photosensitizer conjugates

Online: 16 November 2023 (11:14:44 CET)

Show abstract| Download PDF| Share

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)

Show abstract| Download PDF| Share

Preprint ARTICLE | doi:10.20944/preprints202010.0498.v1

Optimal Synthesis and Mechanistic Performance of HCO-Doped-(Fe3O4)x Adsorbent for Sb(III)/Sb(V) Removal From Water

Renjian Deng, Jun Zhang, Xiaoliang Hu, Chuanqu Zhu, Fubing Xie, Mohammed YASEEN, Andrew Hursthouse, Xing Zeng

Subject: Chemistry And Materials Science, Biomaterials Keywords: HCO-doped-(Fe3O4)x adsorbent; Sb(III) and Sb(V); Ce/Fe molar ratio; Adsorption mechanism

Online: 23 October 2020 (16:41:56 CEST)

Show abstract| Download PDF| Share

Search Results

30799 articles found