cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The dual complex of Calabi--Yau pairs
Creators: name: Kollár, János
name: Xu, Chenyang
Publisher: name: arXiv
Year: 2015
Subjects: subject: Algebraic Geometry (math.AG)
subject: FOS: Mathematics

description: A log Calabi--Yau pair consists of a proper variety $X$ and a divisor $D$ on it such that $K_X+D$ is numerically trivial. A folklore conjecture predicts that the dual complex of $D$ is homeomorphic to the quotient of a sphere by a finite group. The main result of the paper shows that the fundamental group of the dual complex of $D$ is a quotient of the fundamental group of the smooth locus of $X$, hence its pro-finite completion is finite. This leads to a positive answer in dimension $\leq 4$. We also study the dual complex of degenerations of Calabi--Yau varieties. The key technical result we prove is that, after a volume preserving birational equivalence, the transform of $D$ supports an ample divisor.
description: 25 pages. Final Version. To appear in Inventiones mathematicae
Beef Brief: Grass Finishing of Criollo Cattle Provides an Environmentally Preferred and Economically Feasible Meat Supply Chain
Creators: name: Castaño-Sánchez, Jose P.
name: Rotz, C. Alan
name: McIntosh, Matthew M.
name: Tolle, Cindy
name: Gifford, Craig A.
name: Duff, Glenn C.
name: Spiegal, Sheri A.
Publisher: name: Zenodo
Year: 2023
Subjects: beef production
food supply chain
Rarámuri Criollo
grass-fed livestock
grain finishing
ecological footprints

description: Cattle ranching is one of few ways to produce food on the arid rangelands of the U.S. Southwest, but a warming and drying climate
 is introducing new challenges. Adaptation strategies are needed that maintain or improve both environmental quality and profitability. Options include the use of desert-adapted beef cattle biotypes, such as Rarámuri Criollo cattle, and crossbreeding of Criollo with more traditional British genetics such as Angus. Currently, most calves raised in the Southwest are Angus. They are grain finished, often using irrigated crops produced in the hydrologically-threatened Ogallala Aquifer region. A viable alternative may be grass finishing with rainfed forage on the rangeland of the Southwest or in the temperate grasslands of the Northern Plains. Our objective was to determine if the use of Criollo genetics could improve the sustainability of cattle production originating in the Southwest.
description: Funding sources: - USDA-Agricultural Research Service Long-Term Agroecosystem Research (LTAR) Network, 005:040, 005:18 - USDA-National Institute of Food and Agriculture, Grant Number 2019-69012-29853
Ionospheric inversion of the Venus Express radio occultation data observed by Shanghai 25 m and New Norcia 35 m antennas
Creators: name: Zhang, Su-jun
name: Jian, Nian-chuan
name: Li, Jin-ling
name: Ping, Jin-song
name: Chen, Cong-yan
name: Zhang, Ke-fei
Publisher: name: arXiv
Year: 2015
Subjects: subject: Space Physics (physics.space-ph)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Electron density profiles of the Venus' ionosphere are inverted from the Venus Express (VEX) one-way open-loop radio occultation experiments carried out by Shanghai 25 m antenna from November 2011 to January 2012 at solar maximum conditions and by New Norcia 35 m antenna from August 2006 to June 2008 at solar intermediate conditions. The electron density profile (from 110 km to 400 km) retrieved from the X-band egress observation at Shanghai station, shows a single peak near 147 km with a peak density of about $2 \times 10^4 \rm{cm}^{-3}$ at a solar zenith angle of 94$^{\circ}$. As a comparison, the VEX radio science (VeRa) observations at New Norcia station were also examined, including S-, X-band and dual-frequency data in the ingress mode. The results show that the electron density profiles retrieved from the S-band data are more analogous to the dual-frequency data in the profile shape, compared with the X-band data. Generally, the S-band results slightly underestimate the magnitude of the peak density, while the X-band results overestimate that. The discrepancy in the X-band profile is probably due to the relatively larger unmodeled orbital errors. It is also expected that the ionopause height is sensitive to the solar wind dynamical pressure in high and intermediate solar activities, usually in the range of 200 km - 1000 km on the dayside and much higher on the nightside. Structural variations ("bulges" and fluctuations) can be found in the electron density profiles in intermediate solar activity, which may be caused by the interaction of the solar wind with the ionosphere. Considerable ionizations can be observed in the Venus' nightside ionosphere, which are unexpected for the Martian nightside ionosphere in most cases.
description: 12 pages (RAA manuscript style), 5 figures, 1 table. Accepted for publication in 2015 of RAA
Magnetism of the Fe$^{2+}$ and Ce$^{3+}$ sublattices in Ce$_{2}$O$_{2}$FeSe$_{2}$: a combined neutron powder diffraction, inelastic neutron scattering and density functional study
Creators: name: McCabe, E. E.
name: Stock, C.
name: Bettis, J. L.
name: Whangbo, M. -H.
name: Evans, J. S. O.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The discovery of superconductivity in the 122 iron selenide materials above 30 K necessitates an understanding of the underlying magnetic interactions. We present a combined experimental and theoretical investigation of magnetic and semiconducting Ce$_{2}$O$_{2}$FeSe$_{2}$ composed of chains of edge-linked iron selenide tetrahedra. The combined neutron diffraction and inelastic scattering study and density functional calculations confirm the ferromagnetic nature of nearest-neighbour Fe -- Se -- Fe interactions in the ZrCuSiAs-related iron oxyselenide Ce$_{2}$O$_{2}$FeSe$_{2}$. Inelastic measurements provide an estimate of the strength of nearest-neighbor Fe -- Fe and Fe -- Ce interactions. These are consistent with density functional theory calculations, which reveal that correlations in the Fe--Se sheets of Ce$_{2}$O$_{2}$FeSe$_{2}$ are weak. The Fe on-site repulsion $U_{Fe}$ is comparable to that reported for oxyarsenides and K$_{1-x}$Fe$_{2-y}$Se$_{2}$, which are parents to iron-based superconductors.
description: (12 pages, 7 figures, to appear in Phys. Rev. B)
Global performance of covariant density functional theory in description of charge radii and related indicators
Creators: name: Afanasjev, A. V.
name: Perera, U. C.
name: Ring, P.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: A short review of existing efforts to understand charge radii and related indicators on a global scale within the covariant density functional theory (CDFT) is presented. Using major classes of covariant energy density functionals (CEDFs), the global accuracy of the description of experimental absolute and differential charge radii within the CDFT framework has been established. This assessment is supplemented by an evaluation of theoretical statistical and systematic uncertainties in the description of charge radii. New results on the accuracy of the description of differential charge radii in deformed actinides and light superheavy nuclei are presented and the role of octupole deformation in their reproduction is evaluated. Novel mechanisms leading to odd-even staggering in charge radii are discussed. Finally, we analyze the role of self-consistency effects in an accurate description of differential charge radii.
description: 15 pages, 6 figures and 1 Table. to appear in the Proceedings of the workshop on Shapes and Dynamics of Atomic Nuclei: Contemporary Aspects (SDANCA21), Sofia, Bulgaria, 16-18 September 2021, ed. N. Minkov. to be published in Bulgarian Journal of Physics
Long-time behavior of several point particles in a 1D viscous compressible fluid
Creators: name: Koike, Kai
Publisher: name: arXiv
Year: 2021
Subjects: subject: Analysis of PDEs (math.AP)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: We study the long-time behavior of \textit{several} point particles in a 1D viscous compressible fluid. It is shown that the velocities of the point particles all obey the power law $t^{-3/2}$. This result extends author's previous works on the long-time behavior of a \textit{single} point particle. New difficulties arise in the derivation of pointwise estimates of Green's functions due to infinite reflections of waves in-between the point particles. In particular, the differential equation technique used in previous works alone does not suffice. We overcome this by carefully analyzing the structure of Green's functions in the Laplace variable, especially their asymptotic and analyticity properties.
description: 25 pages
Synthesis, Structural, and Quantum Chemical Spectroscopic, Hydrogen Bonding, and Molecular Docking Investigation of Antifungal Compound Pyrazole-Pyrazolium Picrate
Creators: name: Abisha, W.
name: Dhas, D. Arul
name: Balachandran, S.
name: Joe, I. Hubert
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biophysics
subject: Biochemistry
subject: Physical Sciences not elsewhere classified
subject: Pharmacology
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Inorganic Chemistry
subject: FOS: Chemical sciences

description: This work involved the synthesis of the novel antifungal compound pyrazole pyrazolium picrate (PPP), which was then examined using X-ray crystallography, FT-IR, FT-Raman, and UV-vis spectra. Quantum chemical computations were carried out by Density functional theory methods at B3LYP level. The presence of functional groups in PPP compound is confirmed by FT-IR and FT-Raman spectral analysis. The molecular properties, such as chemical reactivity descriptors HOMO-LUMO, Fukui, and MEP of the title compound were calculated to get insight into the stability and reactive site on the molecule. Hirshfeld surface analysis and fingerprint plots were used to calculate intermolecular interactions. The quantum theory of atoms in molecules (QTAIM) and the reduced density gradient (RDG) were carried out to study the intra and intermolecular interactions within the molecule particularly the properties of C–H…O and N–H…O hydrogen bonds. Natural bond orbital (NBO) analysis was used to examine the compound’s electronic stability due to intermolecular and intramolecular interaction and charge delocalization. A molecular docking simulation was employed to explore the ligand-protein interaction, while drug-likeness and ADMET analysis were used to ascertain the biological properties of the title molecule. Antifungal testing was performed to investigate the compound’s efficacy against fungicidal strains.
มาตรการทางกฎหมายของอาเซียนว่าด้วยมาตรฐานด้านความปลอดภัยของอาหารที่นำเข้าและส่งออก กรณีศึกษาผลิตภัณฑ์ขนมอบ
Creators: name: กฤษณา มณีรัตน์
Publisher: name: สำนักวิชานิติศาสตร์ มหาวิทยาลัยแม่ฟ้าหลวง
Year: 2566
Subjects: อาเซียน
มาตรการทางกฎหมาย
ความปลอดภัยของอาหาร
ผลิตภัณฑ์ขนมอบ

description: วารสารนิติศาสตร์ มหาวิทยาลัยแม่ฟ้าหลวง, 6, 1, 147-184
ประเทศไทยกับความเป็นไปได้ที่จะเข้าร่วมอนุสัญญาว่าด้วยการรับรองและบังคับตามคำพิพากษาศาลต่างประเทศในคดีแพ่งและพาณิชย์ ค.ศ. 2019
Creators: name: ชญานิศ วิชชุประภา
Publisher: name: สำนักวิชานิติศาสตร์ มหาวิทยาลัยแม่ฟ้าหลวง
Year: 2566
Subjects: การรับรองและบังคับตาม
คำพิพากษาศาลต่างประเทศ
คดีแพ่งและพาณิชย์

description: วารสารนิติศาสตร์ มหาวิทยาลัยแม่ฟ้าหลวง, 6, 1, 185-228
Additional file 1 of Development of a clinical diagnostic tool to differentiate multiple myeloma from bone metastasis in patients with destructive bone lesions (MM-BM DDx)
Creators: name: Phichayut Phinyo
name: Titinat Maihom
name: Areerak Phanphaisarn
name: Pakorn Kerdsinchai
name: Ekarat Rattarittamrong
name: Jayanton Patumanond
name: Pruksakorn, Dumnoensun
Publisher: name: figshare
Year: 2020
Subjects: subject: Space Science
subject: Medicine
subject: Cell Biology
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: Ecology
subject: FOS: Biological sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Hematology

description: Additional file 1: Appendix 1. International Staging System (ISS) staging of patients with multiple myeloma. Appendix 2. Types of primary cancer in patients diagnosed with bone metastasis. Appendix 3. Closed test algorithm of multivariable fractional polynomial logistic regression model via mfpmi package using an imputed dataset (n = 586). Appendix 4. Internal validation via bootstrap procedures with 100 replicates. Appendix 5. Locally-weighted scatter plot smoothing (LOWESS) and fractional polynomial assessment of linear association between clinical laboratory predictors and log odds of multiple myeloma: (a) hemoglobin, (b) log serum creatinine, (c) log serum globulin, (d) serum calcium, and (e) log alkaline phosphatase.
title: Investigating Snap-Through Dynamics in Bistable MEMS based on Buckled Elastic Structures
Creators: name: Forowycz, Orion
Publisher: name: TU Wien
Year: 2023
Subjects: subject: bistable MEMS
subject: snap-through dynamics
subject: modelling of microplates

description: We conducted an in-depth exploration of snap-through behavior in bistable Micro-Electro-Mechanical Systems (MEMS), using piezoelectric microplates as our representative system. Under several assumptions, including that the plate was thin and homogeneous, models for the plate deflections were derived from von Karman plate theory, coupled to a strain compatibility equation. The complexity of the partial differential equation (PDE) system was managed through the Galerkin method, transforming it into interconnected nonlinear ordinary differential equations (ODEs). Using a Python framework for numerical solutions, we investigated the effects of various piezoelectric tones on snap-through behaviors. The nuanced relationship between tone combinations and their impact on snap-through timing was highlighted. Certain dual tones could accelerate, delay, enable, or completely inhibit snap-through. These insights offer avenues for more controlled, efficient, and innovative applications in MEMS devices, particularly where rapid snap-through is essential.
A Molecular Electron Density Theory Study of the Polar Diels-Alder Reaction of Naphtoquinone:Cr(CO)3 Complex with Cyclic Dienes
Creators: name: Domingo, Luis R.
name: Aurell, María José
name: Ríos-Gutiérrez, Mar
Publisher: name: Taylor & Francis
Year: 2022
Subjects: Biochemistry
Cell Biology
Biotechnology
Chemical Sciences not elsewhere classified
Biological Sciences not elsewhere classified

description: The role of the Cr(CO)3 coordination to the aromatic ring of naphtoquinone (NQ) in the polar Diels-Alder (P-DA) reactions with cyclic dienes, cyclopentadiene (Cp), cyclohexadiene (Ch), and 1-methoxy-cyclohexadiene (ChOMe), has been studied within Molecular Electron Density Theory (MEDT). Electron Localization Function (ELF) of the NQ:Cr(CO)3 complex indicates that Cr(CO)3 does not cause any remarkable change in the electronic structure of NQ. While the NQ:Cr(CO)3 complex is categorized as a strong electrophile, the cyclic dienes are categorized as strong nucleophiles, suggesting P-DA reactions. Formation of the NQ:Cr(CO)3 complex reduces the activation energy by only 0.7 kcal·mol−1. While Ch shows a lower reactivity than Cp, ChOMe presents the highest reactivity of this series of cyclic dienes. Analysis of the activation Gibbs free energies of the P-DA reaction with Cp indicates that the reaction is completely endo and anti stereoselective. The present MEDT study shows that the Cr(CO)3 complex has no effective catalytic activity in the P-DA reactions of NQ with cyclic dienes, but only permits the reaction to take place experimentally with a total endo and anti facial stereoselectivity, yielding a single cycloadduct.
Open Climate Data - Open Science
Creators: name: Gentemann, Chelle L.
name: Ivey, Yvonne
name: Martinez, Isabella
name: Hall, Cynthia
name: Mastracchio, Karla
name: Luna-Cruz, Yaitza
name: Steponaitis, Elena
Publisher: name: Zenodo
Year: 2022

description: Presentation at Open Climate Data Workshop
สถานะทางกฎหมายระหว่างประเทศซอฟลอว์: กรณีศึกษาประมวลกฎต่อต้านการใช้สารต้องห้ามโลก 2021
Creators: name: กานต์ เก่งสกุล
Publisher: name: สำนักวิชานิติศาสตร์ มหาวิทยาลัยแม่ฟ้าหลวง
Year: 2566
Subjects: สถานะทางกฎหมาย
กฎหมายระหว่างประเทศซอฟลอว์
ประมวลกฎต่อต้านการใช้สารต้องห้ามโลก 2021
องค์กรต่อต้านการใช้สารต้องห้ามโลก

description: วารสารนิติศาสตร์ มหาวิทยาลัยแม่ฟ้าหลวง, 6, 1, 229-267
A Green Synthesis of Novel Derivatives of Thiazole-5-One Using Magnetic Supported Copper Nanocatalyst (γ-Fe2O3@HAp@CPTMS@AT@Cu(ӀI))
Creators: name: Dehshal, Navid Ghorbani
name: Mamaghani, Manouchehr
name: Jahanshahi, Parivash
name: Rezaei, Iman
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biochemistry
subject: Physical Sciences not elsewhere classified
subject: Cell Biology
subject: Molecular Biology
subject: Physiology
subject: FOS: Biological sciences
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified

description: A highly efficient one-pot three-component protocol was devised for the synthesis of novel derivatives of ((phenylethlidene)hydrazinyl)thiazol-4(5H)one by the reaction of acetophenone derivatives, ethyl chloroacetate and thiosemicarbazide, in ethanol at room temperature in the presence of copper supported hydroxyapatite-encapsulated-γ-Fe2O3 (γ-Fe2O3@HAp@CPTMS@AT@Cu(ӀI)) as the new magnetically recyclable heterogeneous nanocatalyst. This novel protocol furnished the desired products in excellent yields (88–95%) and short reaction times (20–28 min). The structure and morphology of the synthesized catalyst were characterized by using various techniques such as FT-IR, Fe-SEM, EDX, XRD, TGA-DTA, and VSM.
Isospin breaking decay $η(1405) \to f_0(980)π^0 \to 3π$
Creators: name: Achasov, N. N.
name: Kozhevnikov, A. A.
name: Shestakov, G. N.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: There are attempts in the literature to theoretically explain the large breaking of isotopic invariance in the decay $η(1405)$\,$\to$\,$f_0(980)π^0$\,$\to$\,$ 3π$ by the mechanism containing the logarithmic (triangle) singularity, i.e., as being due to the transition $η(1405)\to(K^*\bar K+\bar K^*K)\to(K^+K^-+K^0\bar K^0)π^0\to f_0(980)π^0\to3π$. The corresponding calculations were fulfilled for a hypothetic case of the stable $K^*$ meson. Here, we show that the account of the finite width of the $K^*$ ($Γ_{K^*\to Kπ}\approx50$ MeV) smoothes the logarithmic singularities in the amplitude and results in the suppression of the calculated decay width $η(1405)\to f_0(980) π^0\to3π$ by the factor of $6-8$ as compared with the case of $Γ_{K^*\to Kπ}$\,=\,0. We also analyze the difficulties related with the assumption of the dominance of the $η(1405)\to(K^*\bar K+\bar K^*K)\to K\bar Kπ$ decay mechanism and discuss the possible dynamics of the decay $η(1405)\toηππ$. The decisive improvement of the experimental data on the $K\bar K$, $ Kπ$, $ηπ$, and $ππ$ mass spectra in the decay of the resonance structure $η(1405/1475)$ to $K\bar Kπ$ and $ηππ$, and on the shape of the resonance peaks themselves in the $K\bar Kπ$ and $ηππ$ decay channels is necessary for the further establishing the $η(1405)\to3 π$ decay mechanism.
description: 10 pages, 8 figures. Added are the details of calculations, 2 references, and clarifying remarks
title: Лыжная подготовка студентов в вузе
title: Учебное пособие
titleType: Subtitle
Creators: name: Ахметов А.М.
Publisher: name: Набережночелнинский государственный педагогический университет
Year: 2016

description: В работе рассматривается техника ходьбы на лыжах, объясняется значение укрепления организма студента с помощью общеразвивающих и специальных упражнений: без предметов, с предметами и на тренажерах, подобранных для повышения физической подготовленности студентов всех специальностей. Подробно рассматриваются функции мышечной системы, исключение травм посредством устранения анатомического дисбаланса, который часто усугубляется действием на костно-мышечную систему. В учебном пособии даны практические рекомендации, которые помогут преподавателю вуза, проводящему занятия по обучению и совершенствованию техники лыжных ходов, а также студенту-лыжнику использовать все факторы, способствующие укреплению здоровья, заложить прочную основу для дальнейших занятий лыжным спортом и повышения спортивных результатов. Учебное пособие рассчитано на студентов, обучающихся по программам бакалавриата и магистратуры, а также на преподавателей физической культуры.
description: In the paper, the technique of skiing, explains the importance of the strengthening of the body of the student with a General developmental and special exercises: without apparatus, with objects and equipment selected to enhance physical fitness of students of all majors. Discusses in detail the functions of the muscular system, elimination of injury by eliminating anatomical imbalances, which is often exacerbated by the effect on the musculoskeletal system. In the tutorial practical recommendations that will help faculty members conducting classes and improving the technique in skiing, and the student-skier to use all the factors contributing to health promotion, to lay a solid Foundation for the future of skiing, and enhance athletic performance. The textbook is intended for students enrolled in undergraduate and graduate programs, as well as for teachers of physical culture.
Nutrient and health-promoting components of edible insects: More than meets the eye
Creators: name: Nolan, Patrick
name: Agyei, Dominic
name: Kavle, R Ruchita
name: Bekhit, Alaa E-D Ahmed
Publisher: name: Zenodo
Year: 2022
Subjects: Edible Insects, Minor components, Chitin, Phytochemicals, Bioactivity,

description: Edible insects have been considered a nutrient-dense alternative to conventional plant-based and animal products. These insects have been found to contain high levels of proteins (~33.5% and 67.2%), fat (22.5% - 49.8%), as well as vitamins (especially for: A, B, D, E, K), and minerals (Mg, P, Ca, Zn, Mg, Fe). However, with edible insects, there is far more than meets the eye. Edible insects have been found to contain high levels of chemical compounds known to promote health. Many of these compounds are found in insects due to their predominantly plant-based diets. This observation leads us to propose that insect-derived phytochemicals could exhibit similar bioactivity to those compounds found in plants. An analysis of minor health-promoting compounds that have been reported in the literature has shown the presence of bioactive compounds, polyphenols, alkaloids, terpenes, and phytosterols in common crickets. These compounds exhibit bioactive functions such as antioxidant, cardioprotective, antimicrobial, neuroprotective and anti-inflammatory effects. Edible insects are also excellent sources of the biopolymer, chitin. Chitin and its derivatives have many bioactive functions, including anti-tumour, antioxidant, anti-microbial and drug excipients. The objective of this presentation is, therefore, to examine the minor bioactive components of edible insects and their health effects. Attention will be given to the presence, concentration, and health properties of edible insect-derived compound classes such as phytochemicals (polyphenols, alkaloids, terpenoids, and sterols), as well as chitin and its derivatives.
Transport of Particles in Fractured Chalk: Effect of Flow Velocity, Fracture Orientation and Fracture Aperture
Creators: name: HAWI, Hanan
Publisher: name: Academic Journal of Civil Engineering
Year: 2024

description: Le transport de particules dans les roches est fortement influencé par la présence de fractures, qui servent de conduits primaires pour les particules solides. L'objectif de ce travail est d'étudier l'effet de la vitesse d'écoulement, de l'ouverture et de l'orientation des fractures sur le transport des particules de kaolinite dans la craie fracturée. Des expériences de transport sont réalisées à des vitesses d'écoulement élevées, en utilisant deux échantillons de craie fracturée avec deux ouvertures différentes. Trois orientations différentes ont été utilisées.  Les données expérimentales couplées au modèle numérique développé, basé sur l'équation d'advection-dispersion avec un terme source, sont utilisées pour déterminer les paramètres de transport. Les résultats suggèrent que l'effet hydrodynamique est significatif sur le transport des particules dans les fractures. Le taux de restitution, les coefficients d'attachement et de détachement des particules de kaolinite augmentent avec l'augmentation de la vitesse d'écoulement. L'échantillon avec la plus grande ouverture de fracture présente un taux de restitution plus élevé en raison d'un coefficient d'attachement plus faible. L'orientation verticale de la fracture améliore la récupération des particules et conduit à des courbes de percée plus précoces. Les résultats de cette étude contribuent à une compréhension globale des mécanismes de transport des particules dans les fractures.
description: Academic Journal of Civil Engineering, Vol 42 No 1 (2024): Special Issue - RUGC 2024
Sensing the shape of a cell with reaction-diffusion and energy minimization
Creators: name: Singh, Amit R.
name: Leadbetter, Travis
name: Camley, Brian A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Subcellular Processes (q-bio.SC)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: Some dividing cells sense their shape by becoming polarized along their long axis. Cell polarity is controlled in part by polarity proteins like Rho GTPases cycling between active membrane-bound forms and inactive cytosolic forms, modeled as a "wave-pinning" reaction-diffusion process. Does shape sensing emerge from wave-pinning? We show that wave pinning senses the cell's long axis. Simulating wave-pinning on a curved surface, we find that high-activity domains migrate to peaks and troughs of the surface. For smooth surfaces, a simple rule of minimizing the domain perimeter while keeping its area fixed predicts the final position of the domain and its shape. However, when we introduce roughness to our surfaces, shape sensing can be disrupted, and high-activity domains can become localized to locations other than the global peaks and valleys of the surface. On rough surfaces, the domains of the wave-pinning model are more robust in finding the peaks and troughs than the minimization rule, though both can become trapped in steady states away from the peaks and valleys. We can control the robustness of shape sensing by altering the Rho GTPase diffusivity and the domain size. We also find that the shape sensing properties of cell polarity models can explain how domains localize to curved regions of deformed cells. Our results help to understand the factors that allow cells to sense their shape - and the limits that membrane roughness can place on this process.
Additional file 1 of Hypoxia directed migration of human naïve monocytes is associated with an attenuation of cytokine release: indications for a key role of CCL26
Creators: name: Hummitzsch, Lars
name: Berndt, Rouven
name: Kott, Matthias
name: Rusch, Rene
name: Faendrich, Fred
name: Gruenewald, Matthias
name: Steinfath, Markus
name: Albrecht, Martin
name: Zitta, Karina
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Cell Biology
subject: Molecular Biology
subject: Physiology
subject: FOS: Biological sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: Immunology
subject: FOS: Clinical medicine
subject: Developmental Biology
subject: Marine Biology
subject: Cancer

description: Additional file 1: Figure S1. Red dots indicate the spatial representation of the mean endpoint after the evaluation of cell movements of at least 20 cells per experiment (N = 4–5). A: oxygen gradient (hypoxia); B: no oxygen gradient (normoxia). P-values were calculated using circular statistics (Rayleigh test). Black lines inside the quadrants show the linear correlation of the center of mass in each experimental group. Figure S2. Detailed description of the array proteins. Figure S3. Red dots indicate the spatial representation of the mean endpoint after the evaluation of cell movements of at least 20 cells per experiment (N = 3). A: no oxygen gradient (normoxia) in combination with a gradient of CCL26; B: oxygen gradient (hypoxia) with homogeneously distributed CCL26. P-values were calculated using circular statistics (Rayleigh test). Black lines inside the quadrants show the linear correlation of the center of mass in each experimental group. Figure S4. Upper panel: Detection of RAGE by Western blotting in cell lysates of monocytes subjected to hypoxic and normoxic conditions (3 representative samples out of N = 7 are shown). Columns show the mean of N = 7 experiments, bars denote SD. Exp, experiment; H, hypoxia, N, normoxia. Lower panel: Colocalization of RAGE and CCL26 in monocytes (3 representative samples out of N = 7 are shown). Yellow color is indicative of cellular RAGE/CCL26 colocalization. Scale bars represent 3 µm. Exp, experiment.
Investigation on the Role of Molecular Planarity and Conjugation Effects on Physicochemical Properties of Anthracene and Pyrene Appended meso-5,15-Bis(Thien-2-yl)-10,20-Diphenylporphyrin Triads
Creators: name: Kumar, V. Vinoth
name: Gayathri, P.
name: Sankar, R.
name: Arunamaheswari, C.
name: Prasath, R.
Publisher: name: Taylor & Francis
Year: 2022
Subjects: subject: Biophysics
subject: Biochemistry
subject: Physical Sciences not elsewhere classified
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Genetics
subject: Physiology
subject: Chemical Sciences not elsewhere classified

description: To examine the influence of molecular planarity and conjugation effects on physicochemical properties of porphyrin π-system through meso-thienyl ring, a new class of anthracene and pyrene appended trans-ThPPZn(II)-An and trans-ThPPZn(II)-Py porphyrins have been synthesized. An efficient and facile methodology is adopted for the synthesis of trans-5NThPPM and trans-5AThPPM (where M = H2, Cu(II), Ni(II), Zn(II)) porphyrins from 5(5-nitro-2-thienyl)dipyrromethane. The 1H NMR spectra of the synthesized porphyrins showed two signals of equal intensity corresponding to the pyrrolyl β-protons, which evidenced the structure of trans-isomers. Electronic spectroscopy and cyclic voltammetry explain the near co-planarity of the thien-2-yl group with the central porphyrin π-system which can influence the electron delocalization on these molecules. The present study reveals the existence of resonance interaction between porphyrin core and anthracene/pyrene moiety in their thien-2-yl bridged conjugates.
Low Precision Decentralized Distributed Training over IID and non-IID Data
Creators: name: Aketi, Sai Aparna
name: Kodge, Sangamesh
name: Roy, Kaushik
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Multiagent Systems (cs.MA)
subject: FOS: Computer and information sciences

description: Decentralized distributed learning is the key to enabling large-scale machine learning (training) on edge devices utilizing private user-generated local data, without relying on the cloud. However, the practical realization of such on-device training is limited by the communication and compute bottleneck. In this paper, we propose and show the convergence of low precision decentralized training that aims to reduce the computational complexity and communication cost of decentralized training. Many feedback-based compression techniques have been proposed in the literature to reduce communication costs. To the best of our knowledge, there is no work that applies and shows compute efficient training techniques such as quantization, pruning, etc., for peer-to-peer decentralized learning setups. Since real-world applications have a significant skew in the data distribution, we design "Range-EvoNorm" as the normalization activation layer which is better suited for low precision training over non-IID data. Moreover, we show that the proposed low precision training can be used in synergy with other communication compression methods decreasing the communication cost further. Our experiments indicate that 8-bit decentralized training has minimal accuracy loss compared to its full precision counterpart even with non-IID data. However, when low precision training is accompanied by communication compression through sparsification we observe a 1-2% drop in accuracy. The proposed low precision decentralized training decreases computational complexity, memory usage, and communication cost by 4x and compute energy by a factor of ~20x, while trading off less than a $1\%$ accuracy for both IID and non-IID data. In particular, with higher skew values, we observe an increase in accuracy (by ~ 0.5%) with low precision training, indicating the regularization effect of the quantization.
description: 11 pages, 7 figures, 9 tables
On the Weak Coupling Limit of Quantum Many-body Dynamics and the Quantum Boltzmann Equation
Creators: name: Chen, Xuwen
name: Guo, Yan
Publisher: name: arXiv
Year: 2014
Subjects: subject: Analysis of PDEs (math.AP)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences

description: The rigorous derivation of the Uehling-Uhlenbeck equation from more fundamental quantum many-particle systems is a challenging open problem in mathematics. In this paper, we exam the weak coupling limit of quantum N-particle dynamics. We assume the integral of the microscopic interaction is zero and we assume W^{4,1} per-particle regularity on the coressponding BBGKY sequence so that we can rigorously commute limits and integrals. We prove that, if the BBGKY sequence does converge in some weak sense, then this weak-coupling limit must satisfy the infinite quantum Maxwell-Boltzmann hierarchy instead of the expected infinite Uehling-Uhlenbeck hierarchy, regardless of the statistics the particles obey. Our result indicates that, in order to derive the Uehling-Uhlenbeck equation, one must work with per-particle regularity bound below W^{4,1}.
Influence of adhesion between the main cement phases on the mechanical behavior of hydrated cement paste
Creators: name: HOEUN, Sela
Publisher: name: Academic Journal of Civil Engineering
Year: 2024

description: Cette étude porte sur la modélisation multi-échelle des propriétés mécaniques des matériaux cimentaires. L'objectif est d'acquérir les propriétés mécaniques des phases de la pâte de ciment hydratée à l'échelle nanométrique, en utilisant des simulations de Dynamique Moléculaire. En effet, les données obtenues à l'échelle inférieure sont considérées comme les paramètres d'entrée à l'échelle supérieure. À l'échelle nanométrique, des essais de traction ont été menés sur les principales phases de la pâte de ciment hydratée, notamment les hydrates de silicate de calcium et la portlandite. La combinaison de ces deux phases a été désignée comme "composite de pâte de ciment" dans cette étude. Les configurations d'espacement et les orientations des composites de pâte de ciment ont été examinées pour différents scénarios. Ainsi, les propriétés mécaniques à l'échelle nanométrique ont été déterminées. Par la suite, les propriétés mécaniques de la pâte de ciment durcie à l'échelle microscopique ont pu être calculées. Par exemple, une Méthode des Éléments Discrets pourrait être utilisée avec un essai de traction sur une pâte de ciment durcie, en prenant en compte les propriétés mécaniques à l'échelle nanométrique. Ce travail contribue à établir le lien nécessaire pour effectuer la transition de l'échelle moléculaire à l'échelle microscopique.
description: Academic Journal of Civil Engineering, Vol 42 No 1 (2024): Special Issue - RUGC 2024
Constraining the orbits of sub-stellar companions imaged over short orbital arcs
Creators: name: Pearce, Tim D.
name: Wyatt, Mark C.
name: Kennedy, Grant M.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Imaging a star's companion at multiple epochs over a short orbital arc provides only four of the six coordinates required for a unique orbital solution. Probability distributions of possible solutions are commonly generated by Monte Carlo (MCMC) analysis, but these are biased by priors and may not probe the full parameter space. We suggest alternative methods to characterise possible orbits, which compliment the MCMC technique. Firstly the allowed ranges of orbital elements are prior-independent, and we provide means to calculate these ranges without numerical analyses. Hence several interesting constraints (including whether a companion even can be bound, its minimum possible semi-major axis and its minimum eccentricity) may be quickly computed using our relations as soon as orbital motion is detected. We also suggest an alternative to posterior probability distributions as a means to present possible orbital elements, namely contour plots of elements as functions of line of sight coordinates. These plots are prior-independent, readily show degeneracies between elements and allow readers to extract orbital solutions themselves. This approach is particularly useful when there are other constraints on the geometry, for example if a companion's orbit is assumed to be aligned with a disc. As examples we apply our methods to several imaged sub-stellar companions including Fomalhaut b, and for the latter object we show how different origin hypotheses affect its possible orbital solutions. We also examine visual companions of A- and G-type main sequence stars in the Washington Double Star Catalogue, and show that $\gtrsim50$ per cent must be unbound.
description: Accepted for publication in MNRAS
Kinetic formation of trimers in a spinless fermionic chain
Creators: name: Gotta, Lorenzo
name: Mazza, Leonardo
name: Simon, Pascal
name: Roux, Guillaume
Publisher: name: arXiv
Year: 2021
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Quantum Gases (cond-mat.quant-gas)
subject: FOS: Physical sciences

description: We show the stabilization of two trimer phases in a chain of spinless fermions with a correlated hopping term. A trimer fluid forms due to a gain in trimer kinetic energy and competes with a fluid of unbound fermions. Furthermore, we observe two intermediate phases where these two fluids coexist and do not spatially separate. Depending on the way trimers are created out of the Fermi sea, hybridization can occur, in which case the onset of correlations between the two fluids is well captured by a generalized BCS ansatz. These results are finally extended to the formation of larger multimers, which highlights the peculiarities of pair and trimer formation.
description: 5+9 pages, 5+7 figures
Natural Orbitals Renormalization Group Approach to the Two-Impurity Kondo Critical Point
Creators: name: He, Rong-Qiang
name: Dai, Jianhui
name: Lu, Zhong-Yi
Publisher: name: arXiv
Year: 2015
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: The problem of two magnetic impurities in a normal metal exposes the two opposite tendencies in the formation of a singlet ground state, driven respectively by the single-ion Kondo effect with conduction electrons to screen impurity spins or the Ruderman-Kittel-Kasuya-Yosida interaction between the two impurities to directly form impurity spin singlet. However, whether the competition between these two tendencies can lead to a quantum critical point has been debated over more than two decades. Here, we study this problem by applying the newly proposed natural orbitals renormalization group method to a lattice version of the two-impurity Kondo model with a direct exchange $K$ between the two impurity spins. The method allows for unbiased accessing the ground state wave functions and low-lying excitations for sufficiently large system sizes. We demonstrate the existence of a quantum critical point, characterized by the power-law divergence of impurity staggered susceptibility with critical exponent $γ= 0.60(1)$, on the antiferromagnetic side of $K$ when the interimpurity distance $R$ is even lattice spacing, while a crossover behavior is recovered when $R$ is odd lattice spacing. These results have ultimately resolved the long-standing discrepancy between the numerical renormalization group and quantum Monte Carlo studies, confirming a link of this two-impurity Kondo critical point to a hidden particle-hole symmetry predicted by the local Fermi liquid theory.
description: 10 pages, 12 figures
Formation d’un agglomérat calcomagnésien en écoulement à base de granulats recyclés pour la protection côtière.
Creators: name: MARAIS, Caroline
Publisher: name: Academic Journal of Civil Engineering
Year: 2024

description: Cette étude porte sur la formation d’un agglomérat calcomagnésien, un éco-matériau formé à partir d’un dépôt calcomagnésien, composé de CaCO3 et de Mg(OH)2,  et de la valorisation de ressources locales recyclées, les granulats recyclés (GR), destiné à la consolidation des zones côtières partiellement immergées. Deux axes majeurs ont été étudiés à savoir : (1) l’étude du mécanisme de croissance de l’agglomérat sous écoulement d’eau de mer ; (2) l’étude de la dissolution partielle des granulats recyclés au contact de l’eau de mer sur la formation et la nature du dépôt calcomagnésien. Le développement d’un système d’écoulement d’eau de mer au contact d’une grille polarisée (cathode) et enfouie dans des granulats recyclés a permis de montrer qu’il était possible de précipiter un dépôt calcomagnésien pour former des agglomérats en dehors des zones d’immersion. Bien que la croissance des agglomérat formés en écoulement restent néanmoins plus faible qu’en immersion, leur propriété physique est similaire. Les caractérisations physico-chimiques menées sur le dépôt calcomagnésien formé ont montré que l’écoulement d’eau de mer et la présence des GR favorisent la précipitation de carbonates de calcium CaCO3. Au-delà de l’effet de l’écoulement, la dissolution des hydrates de la matrice cimentaire contenue dans les GR, se traduit par la libération d’ions pouvant favoriser la précipitation majoritaire de carbonates de calcium.   
description: Academic Journal of Civil Engineering, Vol 42 No 1 (2024): Special Issue - RUGC 2024
Des bactéries au service de la durabilité des structures en béton armé en environnement marin
Creators: name: Dubuit, Julie
Publisher: name: Academic Journal of Civil Engineering
Year: 2024

description: La gestion de la corrosion dans les structures en béton armé (BA) revêt une importance capitale en termes d’impact environnemental, de sécurité des usagers et de coups financiers. Ce constat est particulièrement vrai pour les structures BA en environnement marin, plus gravement touchées du fait de l’agressivité de l’eau de mer. L’objectif de ce travail de recherche est d’étudier une nouvelle biotechnologie dédiée à l’anticorrosion des structures maritimes en BA : la protection cathodique biogalvanique (PCBG). Il s’agit d’une solution innovante et respectueuse de l’environnement inspirée des piles à combustibles microbiennes benthiques. Des micro-organismes électro-actifs, naturellement présents dans les sédiments marins, peuvent former des biofilms à la surface de matériaux conducteurs (électrodes). Le complexe électrode-biofilm forme une bioanode capable de générer des électrons par le biais d’un processus bactérien naturel d’oxydation de matières organiques présentes dans les sédiments. Les bioanodes peuvent alors fournir spontanément un courant de protection cathodique à une structure BA située dans son environnement immédiat. Des essais en laboratoire et in situ ont permis de confirmer la faisabilité de cette nouvelle solution de maintenance bio-électrochimique.
description: Academic Journal of Civil Engineering, Vol 42 No 1 (2024): Special Issue - RUGC 2024
Additional file 2 of Health care costs of injury in the older population: a prospective multicentre cohort study in the Netherlands
Creators: name: Vlegel, Marjolein Van Der
name: Haagsma, Juanita A.
name: A. J. L. M. Geraerds
name: Munter, Leonie De
name: Jongh, Mariska A. C. De
name: Polinder, Suzanne
Publisher: name: figshare
Year: 2020
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer
subject: Science Policy

description: Additional file 2. Flow chart: Overview of BIOS study population and response on questionnaires at different times points (T). Description of data: in this flowchart, an overview of the BIOS study population is shown.
Etude expérimentale et numérique des propriétés mécaniques et thermiques de bétons de co-produits coquilliers
Creators: name: Martin--Cavaillé, Camille
Publisher: name: Academic Journal of Civil Engineering
Year: 2024

description: Dans le but de limiter l’impact environmental des constructions, des sous-produits d’autres industries peuvent être incorporés au béton. En particulier, les déchets coquilliers de l’aquaculture peuvent être utilisés en remplacement des granulats. Les recherches menées jusqu’à présent ont montré que ces nouveaux bétons peuvent atteindre des propriétés mécaniques suffisantes pour être porteurs mais leurs propriétés élastiques et thermiques ont été peu étudiées. De plus, l’impact des coquilles sur le comportement de ces bétons a été peu modélisé. Cette étude vise à mieux comprendre le comportement mécanique et thermique des bétons de co-produits coquilliers afin de tendre vers une optimisation des formulations. Pour cela, des bétons incorporant 50 %vol de coquilles d’huitres concassées à la place des granulats ordinaires ont été formulés et étudiés. Dans le but de d’expliquer leurs comportements, une campagne expérimentale a été menée pour obtenir les paramètres d’élasticité et thermiques des granulats et des coquilles d’huitres. Puis une homogénéisation a été faite par la méthode de Mori-Tanaka. Les résultats montrent que le comportement élastique des bétons est principalement dicté par la phase poreuse des coquilles et que le comportement thermique est meilleur mais très dépendant de la teneur en eau des nouveaux co-produits incorporés.
description: Academic Journal of Civil Engineering, Vol 42 No 1 (2024): Special Issue - RUGC 2024
Chiral superconductivity in nematic states
Creators: name: Takamatsu, Shuhei
name: Yanase, Youichi
Publisher: name: arXiv
Year: 2015
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We investigate chiral superconductivity which occurs in the electronic nematic state. A vortex state in a $c$-axis magnetic field is studied on the basis of the two-component Ginzburg-Landau model for nematic-chiral superconductors. It is shown that various vortex lattice structures are stabilized by nontrivial cooperation of nematicity and chirality in superconductors. In particular, the vortex lattice structural transition occurs when a square anisotropy parameter $ν$ is positive (negative) and the nematicity is induced along the [110] axis ([100] axis). We discuss nematic-chiral superconductivity in URu$_2$Si$_2$, Sr$_2$RuO$_4$, and UPt$_3$. An experimental test for the examination of nematic order and chiral superconductivity is proposed.
data&code
Creators: name: Kong, Weiya
Publisher: name: figshare
Year: 2023
Subjects: classificationCode: 370401
subject: Computational modelling and simulation in earth sciences

description: The data and code are designed to assist the determine the dispatch locations, the quantity of dispatch vehicles, and the dispatch routing of free-floating bike sharing, so as to enhance the decision-making and management associated with the dispatch of shared bikes.