cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Effect of hormones on genes related to hormone receptors and milk component synthesis in bovine mammary epithelial cells grown in two and three dimensional culture system
Creators: name: Xing, Y. Y.
name: Li, D. B.
name: Sun, M.
name: Zhang, H.
name: Hou, X. Z.
name: Gao, M.
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Medicine
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Physiology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: 110309 Infectious Diseases
subject: Computational Biology

description: In this study, the effects of hormones (prolactin, insulin, and growth hormone) on triglyceride (TG) content and the mRNA expression of genes involved in hormone receptor and milk component synthesis were evaluated in bovine mammary epithelial cells that were cultured in two-dimensional (2D) and three-dimensional (3D) systems. TG content was measured with a TG determination kit, and expression of genes were measured with real-time quantitative polymerase chain reactions (RT-qPCR).The expression of these genes and TG content increased significantly in the 3D model compared to those in the 2D model. Moreover, hormone supplementation markedly upregulated the mRNA expression of genes related to hormone receptors and milk component synthesis. A pyramid and interaction effect among hormone supplementation and culture model was obvious. The 3D model is more conducive to study the effect of hormones on genes expression, especially for genes expression relies on response to lactogenic hormones.HighlightsThe expression of genes and TG content increased in the 3D model compared to those in the 2D model.Hormone supplementation upregulated the mRNA expression of genes related to hormone receptors and milk component synthesis.The 3D model is more conducive to study the effect of hormones on gene expression related to hormone receptors and milk component synthesis. The expression of genes and TG content increased in the 3D model compared to those in the 2D model. Hormone supplementation upregulated the mRNA expression of genes related to hormone receptors and milk component synthesis. The 3D model is more conducive to study the effect of hormones on gene expression related to hormone receptors and milk component synthesis.
Incentives for bamboo plantations development in Ghana
Creators: name: Addo-Danso, Abigail
Publisher: name: University of British Columbia
Year: 2018

description: The need to reverse or halt the loss of natural timber resources of Ghana is of great importance. Bamboo is a good alternative to timber and bamboo plantations can help reduce the pressure on natural forests. A number of initiatives and academic works have been conducted to encourage the domestic and commercial use of bamboo in Ghana. This thesis sought to add to these by exploring appropriate incentives for the development of bamboo plantations and proposing arrangements for the design of a bamboo incentive scheme. I covered three major areas in order to achieve these objectives: desired incentives for the development of bamboo plantations, possible effects of desired incentives on bamboo plantations and potential challenges to the adoption of incentives for bamboo plantation development. Large-scale and small-scale plantations developers in the Ashanti and Brong-Ahafo regions were interviewed with structured questionnaires. Purposive sampling was used and a total of 41 responses were gathered. I found profitability of bamboo and high demand for bamboo to be the top two desired incentives by the large-scale developers. Direct financial support and capacity building were the top two desired incentives for the Ashanti region small-scale developers while direct financial support and financial benefits from bamboo emerged as the top two desired incentives for the Brong-Ahafo small-scale developers. I also found that the use of incentives for the development of bamboo plantations would have favorable outcomes in Ghana. The lack of legal backing and favorable state policies and a lack of transparency in incentive acquisition processes emerged among the major potential challenges to the use of incentives for bamboo plantation development under both the large-scale and small-scale categories. I recommend that further studies should be conducted on a larger sample size to enable more reliable outcomes and conclusions to be drawn.
TA'LIM USULLARI TA'LIM MAQSADINI OYDINLASHTIRISHGA XIZMAT QILADI
Creators: name: Qoqon Davlat pedagogika instituti Boshlangich talim fakulteti  Fakultetlararo pedagogika va psihologiya kafedra oqituvchisi  Muxammadieva Xilolahon Djaxongirovna. Jumanova Dilshoda Davronjon qizi   xorijiy tillar fakulteti 209- gurux Obidova Odina  Xurshidjon qizi    xorijiy tillar fakulteti 209- gurux
Publisher: name: Zenodo
Year: 2023

description: Ushbu maqolada metod, bir tomondan, ta'lim maqsadiga erishish vositasi sifatida namoyon bo'lsa, ikkinchi tomondan, boshqariladigan o'quv faoliyatini amalga oshirish sharti hisoblanadi. Ta'lim usullari ta'lim maqsadlarini yoritishga xizmat qiladi, ular yordamida ta'lim mazmunini o'zlashtirish usullari ifodalanadi, o'qituvchi va o'quvchilarning o'zaro ta'siri ko'rsatiladi, ularning xususiyatlarining aksi ko'rsatiladi.
Tayanch so'zlar: ta'lim, vosita, boshqaruv, o'rganish, faoliyat, usullar, ta'lim mazmuni, o'zlashtirish, o'qituvchi, o'quvchi, xususiyatlar.Образовательные методы служат разъяснению цели образования.
On the canonically invariant calculation of Maslov indices
Creators: name: Pletyukhov, Mikhail
name: Brack, Matthias
Publisher: name: Universität Regensburg
Year: 2003
Subjects: subject: 530 Physik

description: After a short review of various ways to calculate the Maslov index appearing in semiclassical Gutzwiller type trace formulae, we discuss a coordinate-independent and canonically invariant formulation recently proposed by A Sugita (2000, 2001). We give explicit formulae for its ingredients and test them numerically for periodic orbits in several Hamiltonian systems with mixed dynamics. We demonstrate how the Maslov indices and their ingredients can be useful in the classification of periodic orbits in complicated bifurcation scenarios, for instance in a novel sequence of seven orbits born out of a tangent bifurcation in the H\\\'enon-Heiles system.
Optical multiband surface photometry of a sample of Seyfert galaxies. I. Large-scale morphology and local environment analysis of matched Seyfert and inactive galaxy samples
Creators: name: Slavcheva-Mihova, L.
name: Mihov, B.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Parallel analysis of the large-scale morphology and local environment of matched active and control galaxy samples plays an important role in studies of the fueling of active galactic nuclei. We carry out a detailed morphological characterization of a sample of 35 Seyfert galaxies and a matched sample of inactive galaxies in order to compare the evidence of non-axisymmetric perturbation of the potential and, in the second part of this paper, to be able to perform a multicomponent photometric decomposition of the Seyfert galaxies. We constructed contour maps, BVRcIc profiles of the surface brightness, ellipticity, and position angle, as well as colour index profiles. We further used colour index images, residual images, and structure maps, which helped clarify the morphology of the galaxies. We studied the presence of close companions using literature data. By straightening out the morphological status of some of the objects, we derived an improved morphological classification and built a solid basis for a further multicomponent decomposition of the Seyfert sample. We report hitherto undetected (to our knowledge) structural components in some Seyfert galaxies - a bar (Ark 479), an oval/lens (Mrk 595), rings (Ark 120, Mrk 376), a nuclear bar and ring (Mrk 352), and nuclear dust lanes (Mrk 590). We compared the large-scale morphology and local environment of the Seyfert sample to those of the control one and found that (1) the two samples show similar incidences of bars, rings, asymmetries, and close companions; (2) the Seyfert bars are generally weaker than the bars of the control galaxies; (3) the bulk of the two samples shows morphological evidence of non-axisymmetric perturbations of the potential or close companions; (4) the fueling of Seyfert nuclei is not directly related to the large-scale morphology and local environment of their host galaxies.
description: Accepted for publication in A&A
Densitometry and Thermometry of Starburst Galaxies
Creators: name: Mangum, Jeffrey G.
name: Darling, Jeremy
name: Menten, Karl M.
name: Henkel, Christian
name: MacGregor, Meredith
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: With a goal toward deriving the physical conditions in external galaxies, we present a survey of formaldehyde (H2CO) and ammonia (NH3) emission and absorption in a sample of starburst galaxies using the Green Bank Telescope. By extending well-established techniques used to derive the spatial density in star formation regions in our own Galaxy, we show how the relative intensity of the 1(10)-1(11) and 2(11)-2(12) K-doublet transitions of H2CO can provide an accurate densitometer for the active star formation environments found in starburst galaxies (c.f. Mangum et al. 2008). Similarly, we employ the well-established technique of using the relative intensities of the (1,1), (2,2), and (4,4) transitions of NH3 to derive the kinetic temperature in starburst galaxies. Our measurements of the kinetic temperature constrained spatial density in our starburst galaxy sample represent the first mean density measurements made toward starburst galaxies. We note a disparity between kinetic temperature measurements derived assuming direct coupling to dust and those derived from our NH3 measurements which points to the absolute need for direct gas kinetic temperature measurements using an appropriate molecular probe. Finally, our spatial density measurements point to a rough constancy to the spatial density (10^{4.5} to 10^{5.5} cm^{-3}) in our starburst galaxy sample. This implies that the Schmidt-Kennicutt relation between L_{IR} and M_{dense}: (1) Is a measure of the dense gas mass reservoir available to form stars, and (2) Is not directly dependent upon a higher average density driving the star formation process in the most luminous starburst galaxies.
description: 4 pages, to appear in proceedings of The 5th Zermatt ISM Symposium
Contribution of L-Arginine supplementation during gestation on sow productive performance and on sow microbial faecal profile
Creators: name: Luise, Diana
name: Bertocchi, Micol
name: Bosi, Paolo
name: Correa, Federico
name: Spinelli, Elisa
name: Trevisi, Paolo
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Genetics
subject: Physiology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified

description: Arginine plays an important role during reproduction, however, the amount of supplementation in sow diet is still uncertain. The aim of the study was to verify the efficacy of a gestating diet enriched or not with a low dose of L-arginine (Arg) on sow productive performance in terms of numbers and weight of piglets at birth and at weaning, frequency of intrauterine growth retardation (IUGR) and piglets’ mortality, sow placenta weight and salivary humoral immunity and intestinal microbial balance of the sows. 205 sows (Landrace x Large White) were divided into two experimental groups: a control group (CON) (102 sows) and a group supplemented with 0.25% of Arg (ARG) for the whole pregnancy period. Saliva and faecal samples were collected two days before farrowing and used for immunoglobulins and microbial analysis, respectively. Arg improved the number of total born piglets (p = .043) and tended to improve the number of total born alive (p = .086) and to reduce IUGR % (p = .090) and dead piglets at d0–d3 (p = .088). The weight of placenta and humoral immunity were not influenced by Arg. Arg did not modify the faecal microbial structure (alpha and beta indices) but increased the relative abundance of Bacteroidaceae family and Bacteroides genera (p = .0001). The results support the knowledge that Arg plays a key role in nutrition and physiology of pregnant sows without compromising gut eubiosis.HighlightArg supplementation of sows’ gestation diet increased the number of total bornsArg supplementation of sows’ gestation diet did not negatively affect the sows’ gut eubiosisArg plays a significant role in the nutrition of pregnant sows. Arg supplementation of sows’ gestation diet increased the number of total borns Arg supplementation of sows’ gestation diet did not negatively affect the sows’ gut eubiosis Arg plays a significant role in the nutrition of pregnant sows.
Understanding the light curves of the HST-1 knot in M87
Creators: name: Coronado, Y. U.
name: Mendoza, S.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: The motion of knots in astrophysical jets is commonly interpreted as shock waves moving along it. Observations of the HST-1 knot during extended periods of time have produced complicated light curves on many wavelengths which are difficult to account using standard hydrodynamical models. Here we reproduce these light curves using the semi-analytical approach developed by Mendoza et al. (2009), developed to reproduce light curves of working surfaces moving along relativistic jets. These working surfaces are generated by periodic oscillations of the injected flow velocity and discharge at the base of the jet. In particular, we use this approach to reproduce the exotic observed features of the light curves of the HST-1 knot in M87. We show that the complicated fits to the light curves are reproduced with high accuracy in all wavelengths. As a bonus, we show that this model is also able to reproduce the light curve of the micro-qsr A06200-00 with high accuracy.
Supplementary material: Network-based approach to understand gene-biological processes affecting economic important traits of Nellore cattle
Creators: name: Mariely Simone Lopes Corrêa
name: Silva, Evandro Neves
name: Fonseca, Larissa Fernanda Simielli
name: De Albuquerque, Lucia Galvão
name: Danielly Beraldo Dos Santos Silva
Publisher: name: Zenodo
Year: 2022
Subjects: Bovine
Biological processes
Transcriptomics

description: Supplementary material. This study aimed to build gene–biological processes networks with candidate differentially expressed genes associated with economic important traits of the Nellore cattle from 17 previous studies.
Dynamic behaviour of nano-sized voids in hexagonal close-packed materials
Creators: name: Grégoire, Claire Marie
Publisher: name: University of British Columbia
Year: 2018

description: The dynamic behaviour and failure mechanisms of nano-sized voids in single crystals is studied for three hexagonal close-packed materials by means of molecular dynamics simulations. Our study reveals that in Magnesium the response is highly anisotropic leading to a brittle to ductile transition in the failure modes under different load orientations. This transition is accompanied by different mechanisms of deformation and is associated with the anisotropic HCP lattice structure of Mg and the associated barrier for dislocation motion. Remarkably, brittle failure is observed when external loads produce a high stress triaxiality while the response is more ductile when the stress triaxiality decreases. On the other hand, the failure in other two hexagonal close-packed materials studied in this work, i.e, Titanium and Zirconium, is more ductile, in high contrast with the brittle failure observed in Magnesium. We find that this difference is due to the fact that nano-sized voids in Titanium and Zirconium emit substantially more dislocations than Magnesium, allowing for large displacements of the atoms and plastic work, including non-basal planes. Based on our findings, we postulate that this brittle failure in Magnesium is due to a competition between dislocations emission in the basal plane and crack propagation in non-basal planes. Thus, we propose to use the ratio between unstable stacking fault and surface energy in these materials to assess the tendency of hexagonal close-packed materials and alloys to fail under brittle or ductile modes. Using this ratio, we critically identify the low surface energy of Mg as responsible for this brittle behaviour and recommend that Mg-based alloys with large surface energies can lead to better performance for dynamic applications. The fundamental mechanisms observed, therefore, explain the low spall strength of Mg and suggest the possibility of manipulating some mechanisms to increase ductility and spall strength of new lightweight Mg alloys.
Evolution of surname distribution under gender-equality measurements
Creators: name: Lafuerza, L. F.
name: Toral, R.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences

description: We consider a model for the evolution of the surnames distribution under a gender-equality measurement presently discussed in the Spanish parliament (the children take the surname of the father or the mother according to alphabetical order). We quantify how this would bias the alphabetical distribution of surnames, and analyze its effect on the present distribution of the surnames in Spain.
Quasi-deterministic transport of Brownian particles in an oscillating periodic potential
Creators: name: Romanczuk, Pawel
name: Mueller, Felix
name: Schimansky-Geier, Lutz
Publisher: name: arXiv
Year: 2010
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We consider overdamped Brownian dynamics in a periodic potential with temporally oscillating amplitude. We analyze the transport which shows effective diffusion enhanced by the oscillations and derive approximate expressions for the diffusion coefficient. Furthermore we analyze the effect of the oscillating potential on the transport if additionally a constant force is applied. We show the existence of synchronization regimes at which the deterministic dynamics is in resonance with the potential oscillations giving rise to transport with extremely low dispersion. We distinguish slow and fast oscillatory driving and give analytical expressions for the mean velocity and effective diffusion.
description: submitted: Feb 12th, 2010
Seismic pulse propagation with constant Q and stable probability distributions
Creators: name: Mainardi, Francesco
name: Tomirotti, Massimo
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mathematical Physics (math-ph)
subject: Probability (math.PR)
subject: Geophysics (physics.geo-ph)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: The one-dimensional propagation of seismic waves with constant Q is shown to be governed by an evolution equation of fractional order in time, which interpolates the heat equation and the wave equation. The fundamental solutions for the Cauchy and Signalling problems are expressed in terms of entire functions (of Wright type) in the similarity variable and their behaviours turn out to be intermediate between those for the limiting cases of a perfectly viscous fluid and a perfectly elastic solid. In view of the small dissipation exhibited by the seismic pulses, the nearly elastic limit is considered. Furthermore, the fundamental solutions for the Cauchy and Signalling problems are shown to be related to stable probability distributions with index of stability determined by the order of the fractional time derivative in the evolution equation.
description: 23 pages, 4 figures
"Peace, Easy Taxes, and a Tolerable Administration of Justice": Institutional Influences on SME Innovation in Developing Countries
Creators: name: Tohidi, Sevda
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2022
Subjects: SME
Innovation
Developing Countries
Corruption
Entrepreneurship
Tax Corruption
Crime
uncertainty

description: This thesis explores the effects of "peace, easy taxes, and a tolerable administration of justice" on innovation. These three factors are necessary to protect the property rights in every country, and protecting these rights is one of the fundamental chores for the institutions. However, in developing economies, lack of these institutions or non-functioning institutions can lead to corruption, crime, and tax corruption. The main objective of this thesis is how corruption, crime, and tax corruption are affecting small and medium-sized firms' innovation in developing economies. In order to explore this relationship and analyze the different aspects of it, quantitative econometric analysis is used. The empirical analysis is based on the data from the Enterprise Surveys by the World Bank group, which contains firm-level data regarding business environments from 139 countries. Furthermore, this thesis reports the effect of a variety of factors which influence innovation in developing countries. The results show that corruption and crime in emerging economies are facilitating innovation, while tax corruption is not significantly affecting innovation in small and medium-sized firms.
Corporate Governance and Earnings Management: Evidence from the Jordanian Banking Sector
Creators: name: Al-Ta’amneh, Mohammed
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2022
Subjects: Corporate Governance
Earnings Management
Banking Sector

description: The world has witnessed a series of corporate accounting scandals. Earnings management, as a phenomenon at the core of these scandals, is one of the main challenges confronting the effectiveness of different monitoring mechanisms such as corporate governance. Recently, and more precisely after the financial crises of 2008 2009, Jordan has shown substantial interest in integrating the pillars of corporate governance. Therefore, this research examines the effect of corporate governance mechanisms on earnings management activities among all publicly listed commercial banks on the Amman Stock Exchange (ASE) during the period 2013-2018. Earnings management was measured by the modified Jones’ model. The characteristics examined are board size, CEO duality, board independence, managerial ownership, institutional ownership, audit committee size, audit committee independence and audit committee activity. In addition, two control variables have been used: firm size and firm performance. The findings of the study reveal that earnings management has a significant positive relationship with both board size and institutional ownership, and a significant negative relationship with total assets.
Transport of magnetic flux from the canopy to the internetwork
Creators: name: Pietarila, A.
name: Cameron, R. H.
name: Danilovic, S.
name: Solanki, S. K.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Recent observations have revealed that 8% of linear polarization patches in the internetwork quiet Sun are fully embedded in downflows. These are not easily explained with the typical scenarios for the source of internetwork fields which rely on flux emergence from below. We explore using radiative MHD simulations a scenario where magnetic flux is transported from the magnetic canopy overlying the internetwork into the photosphere by means of downward plumes associated with convective overshoot. We find that if a canopy-like magnetic field is present in the simulation, the transport of flux from the canopy is an important process for seeding the photospheric layers of the internetwork with magnetic field. We propose that this mechanism is relevant for the Sun as well, and it could naturally explain the observed internetwork linear polarization patches entirely embedded in downflows.
description: Accepted to ApJ
Heavy traffic limit theorems for a queue with Poisson ON/OFF long-range dependent sources and general service time distribution
Creators: name: Dai, Wanyang
Publisher: name: arXiv
Year: 2011
Subjects: subject: Probability (math.PR)
subject: Information Theory (cs.IT)
subject: Statistics Theory (math.ST)
subject: FOS: Mathematics
subject: FOS: Computer and information sciences

description: In Internet environment, traffic flow to a link is typically modeled by superposition of ON/OFF based sources. During each ON-period for a particular source, packets arrive according to a Poisson process and packet sizes (hence service times) can be generally distributed. In this paper, we establish heavy traffic limit theorems to provide suitable approximations for the system under first-in first-out (FIFO) and work conserving service discipline, which state that, when the lengths of both ON- and OFF-periods are lightly tailed, the sequences of the scaled queue length and workload processes converge weakly to short-range dependent reflecting Gaussian processes, and when the lengths of ON- and/or OFF periods are heavily tailed with infinite variance, the sequences converge weakly to either reflecting fractional Brownian motions (FBMs) or certain type of long-range dependent reflecting Gaussian processes depending on the choice of scaling as the number of superposed sources tends to infinity. Moreover, the sequences exhibit a state space collapse-like property when the number of sources is large enough, which is a kind of extension of the well-known Little's law for M/M/1 queueing system. Theory to justify the approximations is based on appropriate heavy traffic conditions which essentially mean that the service rate closely approaches the arrival rate when the number of input sources tends to infinity.
description: 19 pages, to appear in Acta Mathematicae Applicatae Sinica, English Series, and the final publication will be available at springlink.com
The Mani peninsula in antiquity : an archaeological, historical, and epigraphic investigation into regional identity
Creators: name: Gardner, Chelsea A.M.
Publisher: name: University of British Columbia
Year: 2018

description: This dissertation investigates the social, political, cultural, and religious history of the Mani peninsula in classical antiquity from ~500 BCE to 500 CE and focuses especially on the questions of local and regional identities within this remote and harsh landscape. In order to answer these questions, I incorporated a vast number of resources into this research, including Greek and Latin primary historical sources, epigraphic remains and prosopographic data, theoretical paradigms, and a study of archaeological remains, including petrographic and chemical ceramic analysis. In this work, I developed a theoretical model that can be applied globally to marginal societies about which little is known from the historical record. By integrating these varied theoretical methods and primary source datasets, I provide a unique approach to understand settlement patterns and identity on a hyper-local level in the ancient Mediterranean. Throughout my dissertation, I address specific questions about the identity and interactions of the ancient inhabitants of the Mani peninsula, particularly in light of their perioikic status under the powerful Spartan hegemony, and the way in which this relationship changed from the Archaic through Roman periods. The results of my investigations reveal a closer link to overseas locales rather than to the native inland Lakonia, in contrast to the majority of scholarship which assumes Sparta's overarching influence. By incorporating all of the evidence available to scholars of the ancient world, I draw new conclusions about the ancient inhabitants of the peninsula, specifically that much of the region displays relative autonomony and local identities, and that the settlements throughout the peninsula are largely coastal and maritime-based rather than inward-looking. Finally, my research offers a substantial contribution to our understanding of the function of sanctuary of Poseidon at Tainaron, the most famous and important site on the peninsula: namely, that the sanctuary retained its significance throughout classical antiquity largely due to its lack of political affiliation and was not controlled by any one superpower, thus contributing further to a unique, local identity present throughout Mani. Overall, this doctoral research bolsters our understanding of the history and archaeology of the Mani peninsula in classical antiquity.
Numerical simulation of the interaction between solar granules and small-scale magnetic fields
Creators: name: Atroshchenko, I. N.
name: Sheminova, V. A.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We have carried out numerical simulation based on the equations of radiation magnetohydrodynamics to study the interaction of solar granules and small-scale magnetic fields in photospheric regions with various magnetic fluxes. Four sequences of 2D time-dependent models were calculated for photospheric regions with average vertical magnetic fluxes of 0, 10, 20, and 30 mT. The models exhibit no substantial variations in their temperature structure with varying average field strength, while the density and gas pressure profiles display gross changes. The solar granulation brightness field also varies substantially with magnetic flux. The contribution of the small-scale component to the intensity power spectrum increases with average field strength, whereas the large-scale component (of about a granule size) contributes less, the total rms intensity fluctuations being approximately the same. Thus the observed decrease in rms intensity fluctuations with growing average magnetic flux can be interpreted as smoothing of the small-scale component in the power spectrum by the modulation transfer function of the telescope.
description: 15 pages, 6 figures, pudlished in Kinematika i Fizika Nebesnykh Tel (in Russian); Kinematics Phys. Celest. Bodies (in English)
title: Nonlinear random vibration of planetary gear trains with elastic ring gear
Creators: name: Kahnamouei, Jalal Taheri
Publisher: name: Memorial University of Newfoundland
Year: 2020

description: Planetary gear trains (PGT) are widely used in the field of renewable energy, especially in wind turbines. A wind turbine uses planetary gearboxes to transfer wind torque to a generator, and even though gearboxes are designed according to sound engineering practices, they fail much sooner than their design life estimates. Unexpected PGT failures are costly, and it is vital to detect these failures early. This thesis proposes proper methods and analyses that help the wind turbine industry to prevent future failure by enlightening the nonlinear dynamic behavior of PGT under random force. This thesis will investigate one of the main factors in PGT failure: random vibration caused by wind turbulence. In this thesis, a hybrid dynamic model was proposed to model the stochastic nonlinear dynamics of a PGT with an elastic ring gear, and then the statistical linearization method (SL) was introduced to linearize the model. A new criterion of the SL is introduced to linearize the stochastic nonlinear dynamic model of a gear pair. The stochastic response of a thin-walled ring gear PGT under three equally-spaced random moving loads was also investigated. A series of parametric studies was conducted, and the obtained results revealed that the proposed model for the PGT accurately represented the dynamic behavior of the PGT with an elastic ring gear, and the SL gave acceptable accuracy. Also, the energy-based SL was enough accurate and valid to apply to stochastic nonlinear gear pairs under heavy load conditions, and the accuracy of the SL decreased for light load conditions. Finally, analysis on the effect of random moving loads on the ring gear showed that the mean of displacement was affected by the critical speeds, and random loads' speed does not influence the standard deviation of displacement. Monte Carlo simulations (MCS) were conducted to verify the proposed model and method, and MCS proved the accuracy of the proposed model and process.
Spectrum of Sizes for Perfect Deletion-Correcting Codes
Creators: name: Chee, Yeow Meng
name: Ge, Gennian
name: Ling, Alan C. H.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Information Theory (cs.IT)
subject: Discrete Mathematics (cs.DM)
subject: Combinatorics (math.CO)
subject: FOS: Computer and information sciences
subject: FOS: Mathematics

description: One peculiarity with deletion-correcting codes is that perfect $t$-deletion-correcting codes of the same length over the same alphabet can have different numbers of codewords, because the balls of radius $t$ with respect to the Levenshte\uın distance may be of different sizes. There is interest, therefore, in determining all possible sizes of a perfect $t$-deletion-correcting code, given the length $n$ and the alphabet size~$q$. In this paper, we determine completely the spectrum of possible sizes for perfect $q$-ary 1-deletion-correcting codes of length three for all $q$, and perfect $q$-ary 2-deletion-correcting codes of length four for almost all $q$, leaving only a small finite number of cases in doubt.
description: 23 pages
Uniform approximations for pitchfork bifurcation sequences
Creators: name: Kaidel, Jörg
name: Brack, Matthias
Publisher: name: Universität Regensburg
Year: 2004
Subjects: subject: 530 Physik

description: In non-integrable Hamiltonian systems with mixed phase space and discrete symmetries, sequences of pitchfork bifurcations of periodic orbits pave the way from integrability to chaos. In extending the semiclassical trace formula for the spectral density, we develop a uniform approximation for the combined contribution of pitchfork bifurcation pairs. For a two-dimensional double-well potential and the familiar H\\\'enon-Heiles potential, we obtain very good agreement with exact quantum-mechanical calculations. We also consider the integrable limit of the scenario which corresponds to the bifurcation of a torus from an isolated periodic orbit. For the separable version of the H\\\'enon-Heiles system we give an analytical uniform trace formula, which also yields the correct harmonic-oscillator SU(2) limit at low energies, and obtain excellent agreement with the slightly coarse-grained quantum-mechanical density of states.
MiR-145 is involved in the proliferation of bovine mammary epithelial cells and regulates bovine insulin receptor substrate 1
Creators: name: Li, Wenqing
name: Li, Chenwan
name: Lu, Jinghui
name: Zhao, Yangning
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biophysics
subject: Biochemistry
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Physiology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified
subject: 80699 Information Systems not elsewhere classified
subject: FOS: Computer and information sciences
subject: Developmental Biology
subject: Cancer
subject: 110309 Infectious Diseases
subject: FOS: Health sciences

description: MicroRNAs (miRNAs) are short noncoding RNAs that can regulate target gene expression at the posttranscriptional level. It has been reported that bta-miR-145 shows differential expression between the different lactation stages of bovine mammary glands, but the function of bta-miR-145 in normal mammary glands remains unknown. The overexpression of bta-miR-145 significantly decreased the proliferation of mammary epithelial cells (p p > .05), whereas the IRS1 protein level was changed significantly after bta-miR-145 mimic or inhibitor transfection for 72 h (p Bta-miR-145 affects bovine mammary epithelial cell vitality in primary bovine mammary epithelial cells.IRS1 was verified as target gene of bta-miR-145.IRS1 belongs to MAPK signaling pathway, which regulate cell proliferation. Bta-miR-145 affects bovine mammary epithelial cell vitality in primary bovine mammary epithelial cells. IRS1 was verified as target gene of bta-miR-145. IRS1 belongs to MAPK signaling pathway, which regulate cell proliferation.
Pure spinors, twistors, and emergent supersymmetry
Creators: name: Berkovits, Nathan
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Starting with a classical action whose matter variables are a d=10 spacetime vector $x^m$ and a pure spinor $λ^α$, the pure spinor formalism for the superstring is obtained by gauge-fixing the twistor-like constraint $\partial x^m (γ_m λ)_α=0$. The fermionic variables $θ^α$ are Faddeev-Popov ghosts coming from this gauge-fixing and replace the usual (b,c) ghosts coming from gauge-fixing the Virasoro constraint. After twisting the ghost-number such that $θ^α$ has ghost-number zero and $λ^α$ has ghost-number one, the BRST cohomology describes the usual spacetime supersymmetric states of the superstring.
description: 10 pages harvmac tex, added comments on small Hilbert space and U_0 dependence
Neutrino magnetic moment in a magnetized plasma
Creators: name: Mikheev, N. V.
name: Narynskaya, E. N.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The contribution of a magnetized plasma to the neutrino magnetic moment is calculated. It is shown that only part of the additional neutrino energy in magnetized plasma connecting with its spin and magnetic field strength defines the neutrino magnetic moment. It is found that the presence of magnetized plasma does not lead to the considerable increase of the neutrino magnetic moment in contrast to the results presented in literature previously.
description: 7 page, 1 figures, based on the talk presented by E.N.Narynskaya at the XVI International Seminar Quarks'2010, Kolomna, Moscow Region, June 6-12, 2010, to appear in the Proceedings
Inflammatory status and metabolic changes at dry-off in high-yield dairy cows
Creators: name: Mezzetti, Matteo
name: Minuti, Andrea
name: Piccioli-Cappelli, Fiorenzo
name: Trevisi, Erminio
Publisher: name: Taylor & Francis
Year: 2019
Subjects: subject: Space Science
subject: Medicine
subject: Cell Biology
subject: Ecology
subject: FOS: Biological sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 69999 Biological Sciences not elsewhere classified

description: Our study investigates metabolic changes occurring at dry-off and the contribution of milk yield (MY) in such alterations. Thirteen Holsteins were dried off at 55 days from expected calving day (assumed as 0 days from dry-off, DFD) and divided in two groups according to their average daily MY in the last week of lactation, assuming a cut-off of 15 kg·d−1: low MY (7 cows) and high MY (6 cows). From −7 to 34 DFD dry matter intake (DMI) and rumination time were measured. Blood samples were collected at −7, 2, 7, 27 and 34 DFD to assess an haematological and metabolic profile and at −7, 7 and 34 DFD to test functions of circulating white blood cell (WBC) through ex vivo challenges. Data were included in a mixed model for repeated measures assuming MY at dry-off, time and their interaction as fixed effects. After dry-off, DMI was reduced and rumination time was increased in all the animals. High MY cows had greater DMI and rumination time than low MY cows. In blood, WBC counts decreased at 7 DFD and increased the production of pro-inflammatory cytokines at 7 and 34 DFD. Plasmatic concentrations of liver enzymes indicators, positive acute phase proteins (APPs); and nitrogen species increased after dry-off. Conversely, negative APPs and antioxidant species decreased. Those alterations were more marked in high MY animals. This study suggests that dry-off decreased liver function, triggered a systemic inflammation and depleted antioxidant systems, especially in the group of cows with high MY at dry-off.HighlightsInflammation, liver dysfunctions and altered redox balance has been detected after dry-off in all the animals.Cows with highest milk yield before halting of milk removal faced the most severe metabolic challenges.Such founding indicates the management of dry-off as a key point for dairy cows health. Inflammation, liver dysfunctions and altered redox balance has been detected after dry-off in all the animals. Cows with highest milk yield before halting of milk removal faced the most severe metabolic challenges. Such founding indicates the management of dry-off as a key point for dairy cows health.
Effects of Ligustrum lucidum on egg production, egg quality, and caecal microbiota of hens during the late laying period
Creators: name: Chen, Xiaochen
name: Zhang, Yaowhen
name: Ma, Wenfeng
name: Wang, Zhanbin
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: Physiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Ecology
subject: 69999 Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Science Policy
subject: 111714 Mental Health
subject: FOS: Health sciences

description: This study was conducted to determine the effects of diet supplementation of laying hens with Ligustrum lucidum (LL) on egg production, egg quality and caecal microbiota. A total of 360 72-week-old Hy-Line Brown laying hens were divided into three groups with four replicates of 30 birds each. The laying hens were fed with basal diet (control group), basal diet + 1% LL (group I) and basal diet + 2% LL (group II). The experiment lasted for 45 d. Eggs were collected daily and caecal samples were collected at the end of the experiment. Results showed that dietary supplementation with LL did not affect the average daily egg weight, the average daily feed intake, the cracked egg rate, the mortality and the egg quality (p>.05). However, groups I and II showed significantly increased laying rate and decreased feed/egg ratio (p＜.05). The differences in caecal microbiota between group II and the control group were significant. The relative abundance of Bacteroidetes, Firmicutes, Saccharibacteria and Verrucomicrobia at the phylum level; Ruminococcaceae, Rikenellaceae, Acidaminococcaceae, unclassified_Bacteroidales, S24-7 group and ODP1230B8.23 at the family level; RC9 gut group, Phascolarctobacterium, unclassified_Bacteroidales, Butyricicoccus, norank_f__Ruminococcaceae, Ruminococcaceae_UCG-014, coprostanoligenes group and Ruminococcaceae_UCG-005 at the genus level in group II changed significantly compared with that in the control group (p＜.05). Dietary supplementation with 1% and 2% LL could improve the laying performance and affect the caecal microbial community structure of laying hens during the late laying period.HighlightsDietary supplementations with Ligustrum lucidum significantly increased laying performance of hens during the late laying period.Dietary supplementations with Ligustrum lucidum not affected the egg quality of laying hens.Dietary supplementations with Ligustrum lucidum affected the microbial structure of caecum of laying hens. Dietary supplementations with Ligustrum lucidum significantly increased laying performance of hens during the late laying period. Dietary supplementations with Ligustrum lucidum not affected the egg quality of laying hens. Dietary supplementations with Ligustrum lucidum affected the microbial structure of caecum of laying hens.
A review of Quantum Gravity at the Large Hadron Collider
Creators: name: Calmet, Xavier
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: The aim of this article is to review the recent developments in the phenomenology of quantum gravity at the Large Hadron Collider. We shall pay special attention to four-dimensional models which are able to lower the reduced Planck mass to the TeV region and compare them to models with a large extra-dimensional volume. We then turn our attention to reviewing the emission of gravitons (massless or massive) at the LHC and to the production of small quantum black holes.
description: 32 pages, invited review
New 145-MHz Source Measurements by PAPER in the Southern Sky
Creators: name: Jacobs, Daniel C.
name: Aguirre, James E.
name: Parsons, Aaron R.
name: Pober, Jonathan C.
name: Bradley, Richard F.
name: Carilli, Chris L.
name: Gugliucci, Nicole E.
name: Manley, Jason R.
name: van der Merwe, Carel
name: Moore, David F.
name: Parashare, Chaitali R.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: We present observations from the Precision Array for Probing the Epoch of Reionization (PAPER) in South Africa, observed in May and September 2010. Using two nights of drift scanning with PAPER's 60\arcdeg\ FWHM beam we have made a map covering the entire sky below +10 degrees declination with an effective center frequency of 145 MHz, a 70-MHz bandwidth, and a resolution of 26\arcmin. A 4800 square-degree region of this large map with the lowest Galactic emission reaches an RMS of 0.7 Jy. We establish an absolute flux scale using sources from the 160-MHz Culgoora catalog. Using the 408-MHz Molonglo Reference Catalog (MRC) as a finding survey, we identify counterparts to 480 sources in our maps, and compare our fluxes to the MRC and to 332 sources in the Culgoora catalog. For both catalogs, the ratio of PAPER to catalog flux averages to 1, with a standard deviation of 50%. This measured variation is consistent with comparisons between independent catalogs observed at different bands. The PAPER data represent new 145-MHz flux measurements for a large number of sources in the band expected to encompass cosmic reionization, and represents a significant step toward establishing a model for removing foregrounds to the reionization signal.
description: 3 figures, 2 tables, machine readable table. Accepted by ApJL