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Accuracy of Genomic Prediction for Meat Quality Traits Using Cow Reference Populations in Hanwoo Cattle
Mohammad Zahangir Alam
,Shin Dae-Hyun
,You-Sam Kim
,Myung-Hum Park
,Yun-Mi Lee
,Jong-Joo Kim
Posted: 19 May 2026
Digital Twin and Machine Learning-Based Diagnostics for PEM Electrolyzer
Modou Diop
,Adam W. Skorek
,Mouhamadou Moustapha Diop
The degradation of the health state of Proton Exchange Membrane (PEM) water electrolyzer, caused by power supply variability, operating temperature changes, and other chemical factors, represents a major challenge for green hydrogen production efficiency. This paper presents an advanced hybrid system combining a digital twin and machine learning, enabling real-time anomaly detection of a PEM electrolyzer. This intelligent approach allows for the real-time prediction of operating parameters, namely current, voltage, and hydrogen flow rate, via Azure Machine Learning, and their visualization within the system's digital twin via Azure Digital Twins. Furthermore, the comparison between simulated data from the digital twin and those predicted by machine learning enables the anticipation of PEM electrolyzer anomalies. The selected prediction models rely on the Extreme Random Trees algorithm for current and voltage estimation, and on the Elastic Net algorithm for hydrogen flow rate prediction. The obtained results confirm the robustness of the proposed approach, with coefficients of determination of 0.99820, 0.99693, and 0.99665 for current, voltage, and hydrogen flow rate respectively, associated with Normalized Root Mean Square Errors (NRMSE) of 0.00870, 0.011278, and 0.11087. This high accuracy provides the digital twin with the capability to anticipate failures and extend the PEM electrolyzer's lifespan, with a view to optimizing the global efficiency of green hydrogen production.
The degradation of the health state of Proton Exchange Membrane (PEM) water electrolyzer, caused by power supply variability, operating temperature changes, and other chemical factors, represents a major challenge for green hydrogen production efficiency. This paper presents an advanced hybrid system combining a digital twin and machine learning, enabling real-time anomaly detection of a PEM electrolyzer. This intelligent approach allows for the real-time prediction of operating parameters, namely current, voltage, and hydrogen flow rate, via Azure Machine Learning, and their visualization within the system's digital twin via Azure Digital Twins. Furthermore, the comparison between simulated data from the digital twin and those predicted by machine learning enables the anticipation of PEM electrolyzer anomalies. The selected prediction models rely on the Extreme Random Trees algorithm for current and voltage estimation, and on the Elastic Net algorithm for hydrogen flow rate prediction. The obtained results confirm the robustness of the proposed approach, with coefficients of determination of 0.99820, 0.99693, and 0.99665 for current, voltage, and hydrogen flow rate respectively, associated with Normalized Root Mean Square Errors (NRMSE) of 0.00870, 0.011278, and 0.11087. This high accuracy provides the digital twin with the capability to anticipate failures and extend the PEM electrolyzer's lifespan, with a view to optimizing the global efficiency of green hydrogen production.
Posted: 19 May 2026
Fundamental Speed Theory: Hierarchical Tests on 171 SPARC Galaxies Without Dark Matter and a Unified Acceleration Scale
Raheb Ali Mohammed Saleh Aoudh
We present a mathematically rigorous formulation of the Fundamental Speed Theory (FST), a dimensionally consistent vector–tensor theory featuring a dimensionless vector field \( \nu^{\mu} \). We introduce characteristic scales \( L_0 = 10 \) kpc and \( M_0 = \hbar/(cL_0) \) and keep \( \hbar \) and \( c \) explicit throughout. In dimensionless form, the galactic field obeys
\( \frac{d^2\tilde{\nu}}{d\xi^2} + \frac{2}{\xi}\frac{d\tilde{\nu}}{d\xi} = \beta_{\mathrm{eff}}\tilde{\nu}^3 \),\( \qquad \beta_{\mathrm{eff}} \equiv -\frac{\lambda\nu_0^2}{6c_1} = 2.0\times 10^7 \ (\lambda<0). \)
We validate the theory on the SPARC sample using three primary hierarchical levels (Levels 1–3): Level 3 (zero free parameters) fits 65.7% of galaxies with mean \( \chi_{\nu}^{2}=0.809 \); Level 2 (estimated \( M, r_d \), no fitting) reaches 93.6% with mean \( \chi_{\nu}^{2}=0.347 \) for the 160 galaxies with \( \chi_{\nu}^2<3 \); and Level 1 (fitted \( M, r_d \)) fits all 171 galaxies with mean \( \chi_{\nu}^{2}=0.170 \) (91.2% with \( \chi_{\nu}^{2}<0.5 \)). We further report two derived formulations: Level 4 (coefficient-free) and Level 5 (unified), the latter showing that the field parameters unify into a single acceleration scale
\( A_0 = \frac{(c_1+c_3)\nu_0^2 c^2}{L_0} = 2.42\times 10^{-10}\ \mathrm{m/s^2}, \)
which reproduces the full formulation identically for all galaxies. A full three-dimensional numerical experiment with disk-like (anisotropic) boundary forcing confirms that the converged 3D field profiles and rotation-curve fits remain essentially unchanged relative to the 1D quasi-spherical approximation for the tested cases. We also perform an explicit sign-convention robustness check: running the full pipeline with the alternative (negative-sign) convention yields identical fits within numerical tolerance when implemented consistently. Solar System constraints are satisfied because the relevant acceleration arises from the galactic field gradient, giving a local FST acceleration at Earth of \( \sim 8\times 10^{-15} \) of the Newtonian value. All code is archived on Zenodo, and supplementary materials (including complete fit results and both sign-convention implementations) are provided. Extension of FST to cosmological scales is left as future work.
We present a mathematically rigorous formulation of the Fundamental Speed Theory (FST), a dimensionally consistent vector–tensor theory featuring a dimensionless vector field \( \nu^{\mu} \). We introduce characteristic scales \( L_0 = 10 \) kpc and \( M_0 = \hbar/(cL_0) \) and keep \( \hbar \) and \( c \) explicit throughout. In dimensionless form, the galactic field obeys
\( \frac{d^2\tilde{\nu}}{d\xi^2} + \frac{2}{\xi}\frac{d\tilde{\nu}}{d\xi} = \beta_{\mathrm{eff}}\tilde{\nu}^3 \),\( \qquad \beta_{\mathrm{eff}} \equiv -\frac{\lambda\nu_0^2}{6c_1} = 2.0\times 10^7 \ (\lambda<0). \)
We validate the theory on the SPARC sample using three primary hierarchical levels (Levels 1–3): Level 3 (zero free parameters) fits 65.7% of galaxies with mean \( \chi_{\nu}^{2}=0.809 \); Level 2 (estimated \( M, r_d \), no fitting) reaches 93.6% with mean \( \chi_{\nu}^{2}=0.347 \) for the 160 galaxies with \( \chi_{\nu}^2<3 \); and Level 1 (fitted \( M, r_d \)) fits all 171 galaxies with mean \( \chi_{\nu}^{2}=0.170 \) (91.2% with \( \chi_{\nu}^{2}<0.5 \)). We further report two derived formulations: Level 4 (coefficient-free) and Level 5 (unified), the latter showing that the field parameters unify into a single acceleration scale
\( A_0 = \frac{(c_1+c_3)\nu_0^2 c^2}{L_0} = 2.42\times 10^{-10}\ \mathrm{m/s^2}, \)
which reproduces the full formulation identically for all galaxies. A full three-dimensional numerical experiment with disk-like (anisotropic) boundary forcing confirms that the converged 3D field profiles and rotation-curve fits remain essentially unchanged relative to the 1D quasi-spherical approximation for the tested cases. We also perform an explicit sign-convention robustness check: running the full pipeline with the alternative (negative-sign) convention yields identical fits within numerical tolerance when implemented consistently. Solar System constraints are satisfied because the relevant acceleration arises from the galactic field gradient, giving a local FST acceleration at Earth of \( \sim 8\times 10^{-15} \) of the Newtonian value. All code is archived on Zenodo, and supplementary materials (including complete fit results and both sign-convention implementations) are provided. Extension of FST to cosmological scales is left as future work.
Posted: 19 May 2026
Metabolomic Changes in the Rat Eye Lens During the Cataract Onset
Olga A. Snytnikova
,Anton A. Smolentsev
,Nataliya G. Kolosova
,Anzhella Zh. Fursova
,Yuri P. Tsentalovich
Posted: 19 May 2026
A Qualitative Examination of Contemporary Research Gaps in International Relations Studies: Analyzing Emerging Global Issues
Safran Safar Almakaty
Posted: 19 May 2026
Separating CD44-Mediated Monocyte Rolling from Dominant VLA-4 Adhesion
Marcus Hubbe
,Robert H. Eibl
Leukocyte recruitment from blood into tissues involves sequential adhesive steps, including rolling and integrin-dependent arrest. The integrin VLA-4 is known to mediate firm adhesion, but can also support rolling. CD44–hyaluronan interactions have also been implicated in leukocyte rolling. Here, we used parallel-plate flow chamber assays to compare the contributions of CD44 and VLA-4 to monocyte rolling on different cellular monolayers. Monocytoid WEHI 78/24 cells rolled and adhered through CD44 on hyaluronan-presenting ECV304 monolayers, whereas VLA-4 dominated adhesion on endothelial monolayers expressing functional VCAM-1. Primary human monocytes showed similar CD44-dependent rolling on ECV304 monolayers. Blocking CD44, adding soluble hyaluronan, or removing surface hyaluronan with hyaluronidase reduced rolling and adhesion. These results show that CD44 can support monocyte rolling when VLA-4/VCAM-1 adhesion is not the dominant interaction. This cell-based flow model distinguishes CD44/hyaluronan-mediated rolling from VLA-4/VCAM-1-rolling and may help analyze monocyte rolling on hyaluronan, including tumor-derived monolayers.
Leukocyte recruitment from blood into tissues involves sequential adhesive steps, including rolling and integrin-dependent arrest. The integrin VLA-4 is known to mediate firm adhesion, but can also support rolling. CD44–hyaluronan interactions have also been implicated in leukocyte rolling. Here, we used parallel-plate flow chamber assays to compare the contributions of CD44 and VLA-4 to monocyte rolling on different cellular monolayers. Monocytoid WEHI 78/24 cells rolled and adhered through CD44 on hyaluronan-presenting ECV304 monolayers, whereas VLA-4 dominated adhesion on endothelial monolayers expressing functional VCAM-1. Primary human monocytes showed similar CD44-dependent rolling on ECV304 monolayers. Blocking CD44, adding soluble hyaluronan, or removing surface hyaluronan with hyaluronidase reduced rolling and adhesion. These results show that CD44 can support monocyte rolling when VLA-4/VCAM-1 adhesion is not the dominant interaction. This cell-based flow model distinguishes CD44/hyaluronan-mediated rolling from VLA-4/VCAM-1-rolling and may help analyze monocyte rolling on hyaluronan, including tumor-derived monolayers.
Posted: 19 May 2026
Mixed-Frequency Parametric Probabilistic Prediction of Daily Stroke Admissions: Machine Learning and Deep Learning Approaches with Environmental Data
Lu Wang
,Xiaoming Ye
Posted: 19 May 2026
Analytical Discordance Between Point-of-Care Troponin Assays and a Central Laboratory High-Sensitivity Assay in a Sri Lankan Hospital Setting: Implications for Implementation
Kavindya Fernando
,Nilshan Fernando
,Dilini Jayasekara
,BKTP Dayanath
Posted: 19 May 2026
Mathematical Sequence Analyses of Cystic Fibrosis Transmembrane Conductance Regulator (CFTR): Cross-Species Skeletal Frameworks in Cystic Fibrosis
Sk. Sarif Hassan
,Kharerin Hungyo
,Vladimir N. Uversky
Posted: 19 May 2026
Fault Location in Distribution Networks Using Apparent Inductance-Based Algorithm
Obed Muhayimana
,Petr Toman
,Matti Lehtonen
,Ali Aljazaeri
,He Li
,Silas Tuyishime
Posted: 19 May 2026
ApexClaw: A Persistent Infrastructure for Agentic Scientific Research
Zhisheng Tang
,Mayank Kejriwal
Posted: 19 May 2026
Anti-Inflammatory Effects of Ginsenoside Rg1 and Low-Dose Ginseng Extract in an Astrocyte-Microglia Co-Culture Model of Inflammation
Shaoning An
,Laura Schönfelder
,Peter Reusch
,Pedro M. Faustmann
,Fatme S. Ismail
,Timo Jendrik Faustmann
Posted: 19 May 2026
Pre-Wetting Reduces Blood Component Deposition on Polyvinyl Alcohol-Coated Poly-ε-Caprolactone Nanofiber Grafts
Masahiro Tsutsui
,Takumi Yoshida
,Daisuke Naruse
,Shingo Kunioka
,Yuta Kikuchi
,Naohiro Wakabayashi
,Hiroyuki Kamiya
,Kyohei Oyama
Posted: 19 May 2026
Multi-Agent Intelligent System For Dynamic Predictive Evaluation Of National And Regional Labour Markets In Bulgaria
Ivona Velkova
,Valentin Kisimov
Posted: 18 May 2026
Cytokine-Induced Reduction of CFTR: A Potential Cause of Hypoxia in Localized Pneumonia?
Michael Eisenhut
Posted: 18 May 2026
From Information Retrieval to Agentic Action: A Framework for Brand Visibility in AI-Mediated Markets
Marcos Guimaraes Figueira
Posted: 18 May 2026
Comparative Genomic Analysis of Two Bat Poxviruses in the Genus Vespertilionpoxvirus
Chi Zhang
,Kyle Heye
,Davide Lelli
,Loubna Tazi
,Stefan Rothenburg
Posted: 18 May 2026
A Closed-Form Fertilisation-Age to PK-Sim Dummy-Age Mapping Enabling Daily and Weekly Pregnancy Physiology Vectors in Open Systems Pharmacology Physiologically Based Pharmacokinetic Modelling
Tobechi Brendan Nnanna
Posted: 18 May 2026
Roles of Metabolites Unveiled by Metabolomics in Rapeseeds
Yunong Xia
,Silin Su
,Xianyu Tang
,Lei Qin
,Junxing Lu
,Shitou Xia
Posted: 18 May 2026
The Information Lattice Model: Entropic Permeability, Emergent Gravity, and the Holographic Structure of the Brane–Bulk Interface
Gabriel G. De la Torre
Posted: 18 May 2026
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