cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
АЗОТФИКСИРУЮЩАЯ СПОСОБНОСТЬ ЛЮПИНА УЗКОЛИСТНОГО В ОДНОВИДОВОМ И СМЕШАННОМ ПОСЕВАХ В ЗАВИСИМОСТИ ОТ НОРМ ВЫСЕВА И УДОБРЕНИЙ В ЦЕНТРЕ НЕЧЕРНОЗЕМНОЙ ЗОНЫ РОССИИ
Creators: name: КОНОНЧУК В.В.
name: ТИМОШЕНКО С.М.
name: ШТЫРХУНОВ В.Д.
name: БЛАГОВЕЩЕНСКИЙ Г.В.
name: НАЗАРОВА Т.О.
Publisher: name: Зернобобовые и крупяные культуры
Year: 2020
Subjects: ЛЮПИН УЗКОЛИСТНЫЙ
НОРМА ВЫСЕВА
УДОБРЕНИЕ
АЗОТФИКСАЦИЯ
БИОЛОГИЧЕСКИЙ АЗОТ
ДЕРНОВО-ПОДЗОЛИСТАЯ ПОЧВА
НЕЧЕРНОЗЕМНАЯ ЗОНА
NARROW-LEAFED LUPINE
SEEDING RATE
FERTILIZER
NITROGEN FIXATION
BIOLOGICAL NITROGEN
SOD-PODZOLIC SOIL
NON-CHERNOZEM ZONE

description: В статье приведены результаты двухлетнего изучения азотфиксирующей способности детерминантного сорта люпина узколистного Ладный в одновидовом посеве и в смеси с яровой пшеницей Злата в зависимости от удобрений и норм высева. Обсуждается их влияние на размеры поступления фиксированного азота в почву с растительными остатками и перспектива обогащения им пахотного слоя при выращивании на зерно.The article presents the results of a two-year study of nitrogen-fixing ability of the determinant narrow-leafed lupine variety Ladny in single-species sowing and mixed with spring wheat Zlata depending on fertilizers and seeding rates. Their influence on the size of fixed nitrogen input into the soil with plant residues and the prospect of enriching the arable layer when growing for grain are discussed.
РЕЗУЛЬТАТЫ И ПЕРСПЕКТИВЫ СЕЛЕКЦИИ СИДЕРАЛЬНЫХ СОРТОВ УЗКОЛИСТНОГО ЛЮПИНА ВО ВСЕРОССИЙСКОМ НАУЧНО-ИССЛЕДОВАТЕЛЬСКОМ ИНСТИТУТЕ ЛЮПИНА
Creators: name: АГЕЕВА П.А.
name: МАТЮХИНА М.В.
name: ПОЧУТИНА Н.А.
name: ГРОМОВА О.М.
Publisher: name: Зернобобовые и крупяные культуры
Year: 2020
Subjects: УЗКОЛИСТНЫЙ ЛЮПИН
СИДЕРАТ
СОРТ
СОРТОИСПЫТАНИЕ
УРОЖАЙНОСТЬ
АЛКАЛОИДЫ
СТРУКТУРНЫЙ АНАЛИЗ
NARROW-LEAFED LUPIN
SIDERAT
VARIETY
VARIETY TESTING
YIELD
ALKALOIDS
STRUCTURE ANALYSIS

description: Узколистный люпин (L. аngustifolius) издавна использовался в качестве сидеральной культуры. Тонна запаханной в почву биомассы сидерального люпина по эффективности эквивалентна навозу, внесённому в той же дозе. В статье дано описание нового сорта узколистного люпина Сидерат 46. В экологическом испытании различных регионов Российской Федерации урожайность его зерна достигает 40,0-50,0 ц/га. Сорт характеризуется скороспелостью, быстрым темпом роста, мелкосемянностью. Масса 1000 зёрен по годам варьирует от 90 до 115 г. По результатам конкурсного сортоиспытания (2017-2019 гг.) в условиях засушливого гидротермического режима урожайность зерна составила 25,0 ц/га, зеленой массы 380,0 ц/га. По этим показателям он превзошел другие сорта на 14,0-34,0%. По результатам структурного анализа Сидерат 46 характеризуется повышенным количеством семян с растения и хорошей обсемененностью боба (4,4 шт.). Установлено, что африканский сорт Азуро выделяется по высоте и массе растений, но неустойчив к болезням и растрескиванию бобов. В группе перспективных алкалоидных гибридов по продуктивности и скороспелости выделены номера 265-19 (Брянский сидерат х Сидерат 46) и 1781-19 [Белозерный 110 х (Сидерат 38 х Мирела)]. Высокой продуктивностью отличился позднеспелый гибрид 1120-19 (Сидерат 46 х Кормовой 344).Narrow-leafed lupin (L. аngustifolius) has been used as sidereal crop long since. Effectiveness of one ton of sidereal lupin biomass ploughed into soil is equivalent to manure added in the same quantity. The article presents the description on the new narrow-leafed lupin variety Siderat 46. Its seed yield in an ecologic varieties’ test was 40.0-50.0 hwt/ha in different regions of the Russian Federation. Early ripeness, rapid growth type, small seeds are typical characters of this variety. The 1000 seed weight varies from 90 to 115 g from year to year. According to the results of its long standing tests (2017-2019) its seed yield made 25.0 hwt/ha and its green mass yield was 380.0 hwt/ha under dry hydro-and-thermal conditions. It surpassed other varieties for these characters by 14.0-34.0%. As the structure analysis shows Siderat 46 has high seed number per a plant and high pods’ seed number (4.4 units). It was revealed that the African variety Azuro stands out for plant height and weight but is not resistant to diseases and pod shattering. The breeding lines 265-19 (Bryanskii siderat х Siderat 46) and 1781-19 [Belozernyi 110 х (Siderat 38 х Mirella)] are included to the group of perspective alkaloid hybrids for their productivity and early ripeness. The late ripening hybrid 1120-19 (Siderat 46 х Kormovoy 344) stood out for its high productivity.
Phytochemical Screening and in vitro antioxidant and antiurolithic activities of Coffea arabica
Creators: name: Alfarrayeh, Ibrahim
Publisher: name: figshare
Year: 2020
Subjects: subject: 111504 Pharmaceutical Sciences
subject: FOS: Clinical medicine

description: Kidney stone formation (aka urolithiasis) is animportant prevalent condition in urological practicewith a high recurrence rate. Etiologically, urolithiasiscomprises a complex process resulting from asuccession of physicochemical events starting withsupersaturation, nucleation, growth, aggregation andfinally retention anywhere within the kidneys.Epidemiologically, calcium oxalate is recognized asthe predominant mineral in the majority of kidneystones where the mechanism of crystallization processis the main idea in urolithiasis. In the present study,effects of different subfractions derived from Coffeaarabica green beans methanol extract were assessedbased on the crystallization of calcium oxalate. Theireffects on size, number and type of calcium oxalatecrystals were indicated.Results revealed that ethyl acetate fraction possessesthe highest concentration of calcium ion that means thestrongest effect on dissolving calcium oxalatemonohydrate crystals compared with cystone. Inaddition, results confirmed that Coffea arabica extracthas antiurolithic activity via reducing crystal sizethrough stimulating the formation of calcium oxalatedehydrate (COD) crystals out from calcium oxalatemonohydrate (COM). The reduction of crystal sizealong with the diuretic effect enables the extract to playan important role in reducing the incidence ofurolithiasis and facilitating their elimination.
ВЛИЯНИЕ МОРФОТИПА ПРОСА НА ХАРАКТЕР СВЯЗИ МЕЖДУ ПРИЗНАКАМИ
Creators: name: СУРКОВ А.Ю.
name: СУРКОВА И.В.
Publisher: name: Зернобобовые и крупяные культуры
Year: 2020
Subjects: ПРОСО
СЕЛЕКЦИЯ
СОРТ
УРОЖАЙНОСТЬ
АДАПТИВНОСТЬ
КАЧЕСТВО ЗЕРНА
МОРФОТИП
MILLET
BREEDING
VARIETY
GRAIN YIELD
ADAPTIVITY
GRAIN QUALITY
MORPHOTYPE

description: В данной статье представлены результаты исследований 2018 и 2019 гг., проведенных в условиях юго-востока Центрально-Черноземного региона. Нами были изучены различные морфотипы проса: сорта с развесистой и со сжатой метелкой, с прямостоячими и пониклыми листьями, с пониклой и прямостоячей метелкой, с коротким и длинным верхним междоузлием, с красным и желтым зерном. Проведен корреляционный анализ у 50 сортов разных морфотипов (по Спирмену и по Пирсону) между хозяйственно-ценными признаками. По результатам корреляционного анализа показана связь между хозяйственно-ценными признаками у различных морфотипов. Выделен наиболее перспективный морфотип для селекции сортов, адаптированных к условиям Центрально-Черноземного региона. Это краснозерные сорта проса со сжатой формой метелки, с прямостоячими листьями, с длинным верхним междоузлием, со слабой поникаемостью метелки. Эти сорта характеризовались наиболее ценными хозяйственно-полезными признаками. Примером такого сорта является новый сорт проса Степное 9, районированный по ЦЧР с 2018 года. Этот сорт относится к разновидности сангвинеум (сжатая метелка, красное зерно), имеет прямостоячие листья и метелку, а также относительно длинное верхнее междоузлие.This article presents the results of research conducted in 2018 and 2019 in the conditions of the south-east of the Central Chernozem Region. We have studied various morphotypes of millet: varieties with a spreading and compressed panicle, with erect and drooping leaves, with a drooping and erect panicle, with a short and long upper internode, with red and yellow grain. A correlation analysis of 50 varieties of different morphotypes (according to Spearman and Pearson) between economically valuable traits was performed. According to the results of correlation analysis, the relationship between economic and valuable signs in different morphotypes is shown. The most promising morphotype for selection of varieties adapted to the conditions of the Central Chernozem region is identified. These are red-grain millet varieties with a compressed panicle shape, with erect leaves, with a long upper internode, with a weak droop of the panicle. These varieties were characterized by the most valuable economic and useful features. An example of this variety is the new millet variety Stepnoe 9, zoned according to the Central Chernozem Region since 2018. This variety belongs to the sanguineum variety (compressed panicle, red grain), has erect leaves and panicle, and a relatively long upper internode.
title: Assessment of plasma D-dimer level and its correlation with disease severity among hypertensive patients
Creators: name: Endeshaw Chekol, Solomon Genet , Menakath Menon , Zeleke Geto , Tadesse Asmamaw , Tadesse Lejisa , Wossene Habtu , Tigist Getahun & Yosef Tolcha
Publisher: name: Journal of Science and Inclusive Development, Wolaita Sodo University
Year: 2020

description: It has been reported that inappropriate acute thrombus formation is the pathophysiological substrate underlying increased risk and severity of target organ damage in hypertension. However, the relationship between severity of hypertension and D-dimer has not been well characterized. This study was aimed to assess plasma D-dimer level and its correlation with disease severity among hypertensive at Yikatit 12 Hospital Medical College (Y12HMC),
Ethiopia. A comparative cross-sectional study was conducted at Y12HMC among 100 participants (60 hypertensive and 40 controls). The correlations between variables were determined using correlation coefficients, regression analysis, and different parametric and nonparametric tests. We observed higher D-dimer levels among hypertensive compared to the healthy controls (P<0.001). The D-dimer levels were found to be increased significantly with the severity of hypertension (P<0.001). D-dimer was found to have a diagnostic power of 86.9% in differentiating complicated from uncomplicated hypertension at 0.83mg/l cut-off value. This study suggests that D-dimer level was higher among hypertensive than control groups and it was also increasing significantly with the severity of hypertension. This suggests that hypercoagulability of fibrin plays a role in the pathogenesis of cardiovascular disorders and thromboembolic complications of hypertensive patients. Further studies need be done on larger scale and using more robust study designs such as cohort to establish the causality of the
association between severity of hypertension and D-dimer level.
Two-step distortion-free reconstruction scheme for holographic microscopy
Creators: name: Joud, Fadwa
name: Verpillat, Frédéric
name: Lesaffre, Max
name: Verrier, Nicolas
name: Gross, Michel
Publisher: name: arXiv
Year: 2013
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We propose a three-dimensional holographic reconstruction procedure applicable with no a priori knowledge about the recording conditions enabling distortion-free three-dimensional object reconstruction.
title: The Effects of a Commercial Nutritional Supplement Combining Amino Acids, Glutamine, Carnitine and B-Vitamins on the Physiological Responses to Ultraendurance Triathlon Training, Performance and Recovery
Creators: name: Mitchell, Mary V.
Publisher: name: Old Dominion University
publisherIdentifier: https://ror.org/04zjtrb98
publisherIdentifierScheme: ROR
Year: 1991

description:
In a placebo, double blind, randomized design, five male triathletes participated in a simulated triathlon which examined the physiological responses of a commercial nutritional supplement. The supplemental protocol included 7.1 gm·d-1 of an amino acid complex with B-vitamins (AA) and between 2.2-7.3 gm·d-1 META-MAX™ containing leucine, isoleucine, valine, glutamine and carnitine in which quantities were based on the athletes training volume. A maltodextrin carbohydrate replacement drink was also included in the protocol. The placebo was an isocaloric lactose substance. The supplements were ingested for 14 d prior to the simulated triathlon and then for 3 d after the event. On the day of the triathlon, the subjects ingested 3 capsules (2.2 gm) of the META-MAX™ or placebo 30 min prior to the performance of a 2 km swim, 90 km bike, and 21 km run. Every 60 min thereafter, 1 capsule (0.725 gm) of the META-MAX™ or placebo was ingested along with normal refueling practices. A 21 d washout period was observed between trials. The purpose of this study was to report the effects of the supplementation on the physiological and biochemical responses to ultraendurance triathlon training, performance and recovery. Results indicated no significant differences (p<0.05) in the caloric intake or pre-event protein intake between the placebo and treatment groups. Pre-race body composition revealed a tendency for lean body mass to increase (p=0.09) by 1.9 kg suggesting that whole body protein degradation may have been minimized during the training period. During the event, there were no significant differences in solid foods, fluids, or the combination of solids and fluids ingested between the trials. Performance results showed no significant differences (p<0.05) between the trials in the swim, bike, run, or final times. Results also indicated a significant increase with supplementation in VO2 by 10% during the cycling and 23% during the running. Other significant increases were found in overall mean triathlon values for HR (3%), Ve (15%), CPK (12%), insulin 16% and B-hydroxybutyrate (64%). Respiratory exchange ratio significantly decreased by 4% and 3% during the cycling and running, respectively, while other significant decreases were found in overall NEFA (16%), NH3 (23%), post run uric acid (14%), sweat urea nitrogen (13%), Mg (14%), Ca++ (8%) and serum iron (11 %) in the supplemented trial. Results suggest that the supplementation tended to reduce the degradation of lean body mass following training, increase fat oxidation while sparing carbohydrate metabolism and reducing protein degradation throughout performance and recovery.
Spin-Orbital Driven Ferroelectricity
Creators: name: Zhu, Shan
name: Li, You-Quan
Publisher: name: arXiv
Year: 2013
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Proposing a general formulism in terms of local coordinates representing the tilting of the ligands' octahedra, we evaluate the electric polarization in a chain of transition metal ions with unpolar octahedron rotation. We find the orbital ordering produced by the ligands's rotation and the spin order, together, determine the polarization features, manifesting that nonvannishing polarization appears in collinear spin order and the direction of polarization is no more restricted in the plane of spin rotation in cycloidal ordering.
description: 5 pages, 3 figures
Orthogonal Schurs for Classical Gauge Groups
Creators: name: Diaz, Pablo
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Finite N physics of half-BPS operators for gauge groups SO(N) and Sp(N) has recently been studied[1, 2]. Among other things they showed that, alike U(N), Schur operators (but in the square of their eigenvalues) diagonalize the free field two-point function of half-BPS operators for SO(N) and Sp(N) gauge groups. This result was unexpected since Wick contractions behave differently. In this paper we solve the puzzle by treating all gauge groups in a unified framework and showing how orthogonality of Schur operators emerges naturally from the embedding structure of classical Lie algebras g(N) -> g(M). We go further and we state that orthogonality of Schurs is a gauge group-independent property for classical gauge groups.
description: 33 pages
Diffusion in active magnetic colloids
Creators: name: Taukulis, Reinis
name: Cebers, Andrejs
Publisher: name: arXiv
Year: 2013
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Properties of active colloids of circle swimmers are reviewed. As an particular example of active magnetic colloids the magnetotactic bacteria under the action of a rotating magnetic field is considered. The relation for a diffusion coefficient due to the random switching of the direction of rotation of their rotary motors is derived on the basis of the master equation. The obtained relation is confirmed by the direct numerical simulation of random trajectory of a magnetotactic bacterium under the action of the Poisson type internal noise due to the random switching of rotary motors. The results obtained are in qualitative and quantitative agreement with the available experimental results and allows one to determine the characteristic time between the switching events of a rotary motor of the bacterium.
Thickness Estimation of the Si Thin Films: a Simulation Study
Creators: name: Babazadeh, Mohammad
name: Nezamabad, Abdollah Rahmat
name: Movla, Hossein
name: Jouneghani, Farzad Ghafari
Publisher: name: arXiv
Year: 2014
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We propose a theoretical study for Si thin film thickness measurement that is based on incident low energy electron beam on the film and counting the transmitted/incident electron fraction. It estimates the thin film thickness distribution from a exponential relation which obtained from counting the fraction of transmitted/incident electron at different thicknesses. By using this obtained equation, it is possible to estimate unknown thickness of the Si thin film. In order to calculate the Si thin film thickness estimation, the energy of the incident electron beams is varied from 6-12 keV, while the thickness of the Si film is varied between 100-400 nm. The most significant feature of this method is that no expensive instruments are required. As anticipated, the proposed method shows that there is a relationship between film thickness and incident beam energy, which by using this relationship, we can find unknown film thickness in 1-D and 2-D conditions. Other advantages include wide measurement range, no calibration need and simple method. Additionally, an investigation by different beam energies helps to avoid artefact from this method. All calculations were done by CASINO numerical simulation package.
description: 8 pages, 6 figures
Handover adaptation for dynamic load balancing in 3gpp long term evolution systems
Creators: name: Nasri, Ridha
name: Altman, Zwi
Publisher: name: arXiv
Year: 2013
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: The long-Term Evolution (LTE) of the 3GPP (3rd Generation Partnership Project) radio access network is in early stage of specification. Self-tuning and self-optimisation algorithms are currently studied with the aim of enriching the LTE standard. This paper investigates auto-tuning of LTE mobility algorithm. The auto-tuning is carried out by adapting handover parameters of each base station according to its radio load and the load of its adjacent cells. The auto-tuning alleviates cell congestion and balances the traffic and the load between cells by handing off mobiles close to the cell border from the congested cell to its neighbouring cells. Simulation results show that the auto-tuning process brings an important gain in both call admission rate and user throughput.
description: numero de Pages dans le proceeding 145-154
Music Genre Classification System - Machine Learning and Artificial Intelligence
Creators: name: Sangpo Lama
Publisher: name: figshare
Year: 2020
Subjects: subject: 80199 Artificial Intelligence and Image Processing not elsewhere classified
subject: FOS: Computer and information sciences

description: Music Genre Classification is an advance platform of listing different genre music and system can automatically detect the genre of music by implementing machine learning algorithms like K-Nearest Neighbors (KNN) algorithm, CNN, and Neural Nets.
Limited impacts of extensive human land use on dominance, specialization, and biotic homogenization in boreal plant communities
Creators: Mayor, S. J.
Boutin, S.
He, F.
Cahill, J. F.
Publisher: name: University of Alberta Library
Year: 2015

Background

Niche theory predicts that human disturbance should influence the assembly of communities, favouring functionally homogeneous communities dominated by few but widespread generalists. The decline and loss of specialists leaves communities with species that are functionally more similar. Evenness of species occupancy declines, such that species become either widespread of rare. These patterns have often been observed, but it is unclear if they are a general result of human disturbance or specific to communities that are rich in species, in complex, spatially heterogeneous environments where the problem has often been investigated. We therefore tested whether human disturbance impacts dominance/evenness of species occupancy in communities, specialism/generalism of species, and functional biotic homogenization in the spatially relatively homogeneous, species poor boreal forest region of Alberta, Canada. We investigated 371 boreal vascular plant communities varying 0 – 100% in proportion of human land use.

Results

Rank species occupancy curves revealed high species dominance regardless of disturbance: within any disturbance class a few species occupied nearly every site and most species were found in a low proportion of sites. However, species were more widespread and displayed more even occupancy in intermediately disturbed communities than among communities of either low or high disturbance. We defined specialists and generalists based on turnover in co-occupants and thereby assessed impacts of human disturbance on specialization of species and community homogenization. Generalists were not disproportionately found at higher disturbance sites, and did not occupy more sites. Communities with greater human disturbance were not more functionally homogeneous; they did not harbor communities with more generalists.

Conclusions

We unexpectedly did not observe strong linkages between species specialism/generalism and disturbance, nor between community homogenization and disturbance. These results contrast previous findings in more species rich, complex or spatially heterogeneous systems and ecological models. We suggest that broad occupancy-based intercommunity patterns are insensitive to human land use extent in boreal vascular plants, perhaps because of ubiquity of generalists, low species richness, and history of natural disturbance. The poor sensitivity of these metrics to disturbance presents challenges for monitoring and managing impacts to biodiversity in this region.
Additional file 1 of Migration timing and marine space use of an anadromous Arctic fish (Arctic Char, Salvelinus alpinus) revealed by local spatial statistics and network analysis
Creators: name: Smith, Rosie
name: Hitkolok, Eric
name: Loewen, Tracey
name: Dumond, Amanda
name: Swanson, Heidi
Publisher: name: figshare
Year: 2024
Subjects: subject: Ecology
subject: FOS: Biological sciences

description: Supplementary Material 1
R_Code_Dryocosmus_Torymus_Article recommended by PCI Zoology: The open bar is closed: restructuration of a native parasitoid community following successful control of an invasive pest.
Creators: name: Muru, David
name: Borowiec, Nicolas
name: Thaon, Marcel
name: Ris, Nicolas
name: Viciriuc, I. Madalina
name: Warot, Sylvie
name: Vercken, Elodie
Publisher: name: Zenodo
Year: 2020

description: This is the R code used for the Article recommended by PCI Zoology: The open bar is closed: restructuration of a native parasitoid community following successful control of an invasive pest. https://doi.org/10.24072/pci.zool.100004
A biomechanical model of swallowing for understanding the influence of saliva and food bolus viscosity on flavour release
Creators: name: De Loubens, Clément
name: Magnin, Albert
name: Doyennette, Marion
name: Tréléa, Ioan Cristian
name: Souchon, Isabelle
Publisher: name: arXiv
Year: 2013
Subjects: subject: Medical Physics (physics.med-ph)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Physical sciences

description: After swallowing a liquid or a semi-liquid food product, a thin film responsible for the dynamic profile of aroma release coats the pharyngeal mucosa. The objective of the present article was to understand and quantify physical mechanisms explaining pharyngeal mucosa coating. An elastohydrodynamic model of swallowing was developed for Newtonian liquids that focused on the most occluded region of the pharyngeal peristaltic wave. The model took lubrication by a saliva film and mucosa deformability into account. Food bolus flow rate and generated load were predicted as functions of three dimensionless variables: the dimensionless saliva flow rate, the viscosity ratio between saliva and the food bolus, and the elasticity number. Considering physiological conditions, the results were applied to predict aroma release kinetics. Two sets of conditions were distinguished. The first one was obtained when the saliva film is thin, in which case food bolus viscosity has a strong impact on mucosa coating and on flavour release. More importantly, we demonstrated the existence of a second set of conditions. It was obtained when the saliva film is thick and the food bolus coating the mucosa is very diluted by saliva during the swallowing process and the impact of its viscosity on flavour release is weak. This last phenomenon explains physically in vivo observations for Newtonian food products found in the literature. Moreover, in this case, the predicted thickness of the mix of food bolus with saliva coating the mucosa is approximately of 20 $μ$m; value in agreement with orders of magnitude found in the literature.
Magnetic Nonpotentiality in Photospheric Active Regions as a Predictor of Solar Flares
Creators: name: Yang, Xiao
name: Lin, GangHua
name: Zhang, HongQi
name: Mao, XinJie
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Based on several magnetic nonpotentiality parameters obtained from the vector photospheric active region magnetograms obtained with the Solar Magnetic Field Telescope at the Huairou Solar Observing Station over two solar cycles, a machine learning model has been constructed to predict the occurrence of flares in the corresponding active region within a certain time window. The Support Vector Classifier, a widely used general classifier, is applied to build and test the prediction models. Several classical verification measures are adopted to assess the quality of the predictions. We investigate different flare levels within various time windows, and thus it is possible to estimate the rough classes and erupting times of flares for particular active regions. Several combinations of predictors have been tested in the experiments. The True Skill Statistics are higher than 0.36 in 97% of cases and the Heidke Skill Scores range from 0.23 to 0.48. The predictors derived from longitudinal magnetic fields do perform well, however they are less sensitive in predicting large flares. Employing the nonpotentiality predictors from vector fields improves the performance of predicting large flares of magnitude $\geq$M5.0 and $\geq$X1.0.
description: 14 pages, 5 tables, accepted for publication in ApJL
Full-Rank Perfect Codes over Finite Fields
Creators: name: Romanov, Alexander M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: In this paper, we propose a construction of full-rank q-ary 1-perfect codes over finite fields. This construction is a generalization of the Etzion and Vardy construction of full-rank binary 1-perfect codes (1994). Properties of i-components of q-ary Hamming codes are investigated and the construction of full-rank q-ary 1-perfect codes is based on these properties. The switching construction of 1-perfect codes are generalized for the q-ary case. We give a generalization of the concept of i-component of 1-perfect codes and introduce the concept of (i,σ)-components of q-ary 1-perfect codes. We also present a generalization of the Lindström and Schönheim construction of q-ary 1-perfect codes and provide a lower bound on the number of pairwise distinct q-ary 1-perfect codes of length n.
description: 8 pages; submitted to IEEE Transactions on Information Theory
Magic polarization for optical trapping of atoms without Stark-induced dephasing
Creators: name: Kim, Huidong
name: Han, Hyok Sang
name: Cho, D.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: We demonstrate that the differential ac-Stark shift of a ground-state hyperfine transition in an optical trap can be eliminated by using properly polarized trapping light. We use the vector polarizability of an alkali-metal atom to produce a polarization-dependent ac-Stark shift that resembles a Zeeman shift. We study a transition from the |2S1/2,F=2,mF=-2> to the |2S1/2,F=1,mF=-1> state of 7Li to observe 0.59+-0.02 Hz linewidth with interrogation time of 2 s and 0.82+-0.06 s coherence time of a superposition state. Implications of the narrow linewidth and the long coherence time for precision spectroscopy and quantum information processing using atoms in an optical lattice are discussed.
Dust grain growth and the formation of the extremely primitive star SDSS J102915+172927
Creators: name: Chiaki, Gen
name: Schneider, Raffaella
name: Nozawa, Takaya
name: Omukai, Kazuyuki
name: Limongi, Marco
name: Yoshida, Naoki
name: Chieffi, Alessandro
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Dust grains in low-metallicity star-forming regions may be responsible for the formation of the first low-mass stars. The minimal conditions to activate dust-induced fragmentation require the gas to be pre-enriched above a critical dust-to-gas mass ratio Dcr=[2.6--6.3]x10^-9 with the spread reflecting the dependence on the grain properties. The recently discovered Galactic halo star SDSS J102915+172927 has a stellar mass of 0.8 Msun and a metallicity of Z=4.5x10^-5 Zsun and represents an optimal candidate for the dust-induced low-mass star formation. Indeed, for the two most plausible Population III supernova progenitors, with 20 Msun and 35 Msun, the critical dust-to-gas mass ratio can be overcome provided that at least 0.4 Msun of dust condenses in the ejecta, allowing for moderate destruction by the reverse shock. Here we show that even if dust formation in the first supernovae is less efficient or strong dust destruction does occur, grain growth during the collapse of the parent gas cloud is sufficiently rapid to activate dust cooling and likely fragmentation into low-mass and long-lived stars. Silicates and magnetite grains can experience significant grain growth in the density range 10^9 /cc < nH<10^12 /cc by accreting gas-phase species (SiO, SiO2, and Fe) until their gas-phase abundance drops to zero, reaching condensation efficiencies =1. The corresponding increase in the dust-to-gas mass ratio allows dust-induced cooling and fragmentation to be activated at 10^12 /cc < nH < 10^14 /cc, before the collapsing cloud becomes optically thick to continuum radiation. We show that for all the initial conditions that apply to the parent cloud of SDSS J102915+172927, dust-driven fragmentation is able to account for the formation of the star.
description: 8 pages, 4 figures, submitted to MNRAS
Extraordinary luminous soft X-ray transient MAXI J0158-744 as an ignition of a nova on a very massive O-Ne white dwarf
Creators: name: Morii, M.
name: Tomida, H.
name: Kimura, M.
name: Suwa, F.
name: Negoro, H.
name: Serino, M.
name: Kennea, J. A.
name: Page, K. L.
name: Curran, P. A.
name: Walter, F. M.
name: Kuin, N. P. M.
name: Pritchard, T.
name: Nakahira, S.
name: Hiroi, K.
name: Usui, R.
name: Kawai, N.
name: Osborne, J. P.
name: Mihara, T.
name: Sugizaki, M.
name: Gehrels, N.
name: Kohama, M.
name: Kotani, T.
name: Matsuoka, M.
name: Nakajima, M.
name: Roming, P. W. A.
name: Sakamoto, T.
name: Sugimori, K.
name: Tsuboi, Y.
name: Tsunemi, H.
name: Ueda, Y.
name: Ueno, S.
name: Yoshida, A.
Publisher: name: arXiv
Year: 2013
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present the observation of an extraordinary luminous soft X-ray transient, MAXI J0158-744, by the Monitor of All-sky X-ray Image (MAXI) on 2011 November 11. This transient is characterized by a soft X-ray spectrum, a short duration (1.3 x 10^3 s < ΔT_d < 1.10 x 10^4 s), a very rapid rise (< 5.5 x 10^3 s), and a huge peak luminosity of 2 x 10^40 erg s^-1 in 0.7-7.0 keV band. With Swift observations and optical spectroscopy from the Small and Moderate Aperture Research Telescope System (SMARTS), we confirmed that the transient is a nova explosion, on a white dwarf in a binary with a Be star, located near the Small Magellanic Cloud. An extremely early turn-on of the super-soft X-ray source (SSS) phase (< 0.44 d), the short SSS phase duration of about one month, and a 0.92 keV neon emission line found in the third MAXI scan, 1296 s after the first detection, suggest that the explosion involves a small amount of ejecta and is produced on an unusually massive O-Ne white dwarf close to, or possibly over, the Chandrasekhar limit. We propose that the huge luminosity detected with MAXI was due to the fireball phase, a direct manifestation of the ignition of the thermonuclear runaway process in a nova explosion.
description: 33 pages, 5 figures, Accepted for publication by ApJ
Machining of complex-shaped parts with guidance curves
Creators: name: Tapie, Laurent
name: Mawussi, Bernardin
name: Rubio, Walter
name: Furet, Benoît
Publisher: name: arXiv
Year: 2013
Subjects: subject: Other Computer Science (cs.OH)
subject: FOS: Computer and information sciences

description: Nowadays, high-speed machining is usually used for production of hardened material parts with complex shapes such as dies and molds. In such parts, tool paths generated for bottom machining feature with the conventional parallel plane strategy induced many feed rate reductions, especially when boundaries of the feature have a lot of curvatures and are not parallel. Several machining experiments on hardened material lead to the conclusion that a tool path implying stable cutting conditions might guarantee a better part surface integrity. To ensure this stability, the shape machined must be decomposed when conventional strategies are not suitable. In this paper, an experimental approach based on high-speed performance simulation is conducted on a master bottom machining feature in order to highlight the influence of the curvatures towards a suitable decomposition of machining area. The decomposition is achieved through the construction of intermediate curves between the closed boundaries of the feature. These intermediate curves are used as guidance curve for the tool paths generation with an alternative machining strategy called "guidance curve strategy". For the construction of intermediate curves, key parameters reflecting the influence of their proximity with each closed boundary and the influence of the curvatures of this latter are introduced. Based on the results, a method for defining guidance curves in four steps is proposed.
Habitable worlds with no signs of life
Creators: name: Cockell, Charles S
Publisher: name: arXiv
Year: 2013
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: 'Most habitable worlds in the cosmos will have no remotely detectable signs of life' is proposed as a biological hypothesis to be tested in studies of exoplanets. Habitable planets could be discovered elsewhere in the Universe, yet there are many hypothetical scenarios whereby the search for life on them could yield negative results. Scenarios for habitable worlds with no remotely detectable signatures of life include: planets that are habitable, but have no biosphere (Uninhabited Habitable Worlds); planets with life, but lacking any detectable surface signatures of that life (laboratory examples are provided) and planets with life, where the concentration of atmospheric gases produced or removed by biota are impossible to disentangle from abiotic processes because of the lack of detailed knowledge of planetary conditions (the 'problem of exoplanet thermodynamic uncertainty'). A rejection of the hypothesis would require that the origin of life usually occurs on habitable planets, that spectrally detectable pigments and/or metabolisms that produce unequivocal biosignature gases (e.g. oxygenic photosynthesis) usually evolve and that the organisms that harbour them usually achieve a sufficient biomass to produce biosignatures detectable to alien astronomers.
description: 29 page, 3 figures, 1 table, accepted for publication in Philosophical Transactions of the Royal Society (Exoplanet discussion meeting)
Scalar filed evolution and area spectrum for Lovelock-AdS black holes
Creators: name: Prasobh, C. B.
name: Kuriakose, V. C.
Publisher: name: arXiv
Year: 2013
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We study the modes of evolution of massless scalar fields in the asymptotically AdS spacetime surrounding maximally symmetric black holes of large and intermediate size in the Lovelock model. It is observed that all modes are purely damped at higher orders. Also, the rate of damping is seen to be independent of order at higher dimensions. The asymptotic form of these frequencies for the case of large black holes is found analytically. Finally, the area spectrum for such black holes is found from these asymptotic modes.
description: 15 pages, 6 figures, published online in Gen. Relativ. Gravit
Wavelength-Multiplexed Quantum Networks with Ultrafast Frequency Combs
Creators: name: Roslund, Jonathan
name: De Araujo, Renné Medeiros
name: Jiang, Shifeng
name: Fabre, Claude
name: Treps, Nicolas
Publisher: name: arXiv
Year: 2013
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Highly entangled quantum networks cluster states lie at the heart of recent approaches to quantum computing \cite{Nielsen2006,Lloyd2012}. Yet, the current approach for constructing optical quantum networks does so one node at a time \cite{Furusawa2008,Furusawa2009,Peng2012}, which lacks scalability. Here we demonstrate the \emph{single-step} fabrication of a multimode quantum network from the parametric downconversion of femtosecond frequency combs. Ultrafast pulse shaping \cite{weiner2000} is employed to characterize the comb's spectral entanglement \cite{vanLoock2003}. Each of the 511 possible bipartitions among ten spectral regions is shown to be entangled; furthermore, an eigenmode decomposition reveals that eight independent quantum channels \cite{Braunstein2005} (qumodes) are subsumed within the comb. This multicolor entanglement imports the classical concept of wavelength-division multiplexing (WDM) to the quantum domain by playing upon frequency entanglement as a means to elevate quantum channel capacity. The quantum frequency comb is easily addressable, robust with respect to decoherence, and scalable, which renders it a unique tool for quantum information.
Rédiger son plan de gestion des données de projet avec DMP OPIDoR. Guide pratique
Creators: name: Sébire, Fanny
Publisher: name: Zenodo
Year: 2024
Subjects: DMP OPIDoR
Plan de gestion des données
Données de recherche

description: Ce présent document a pour objectif de guider les scientifiques dans l’utilisation de DMP OPIDoR pour la rédaction d'un PGD de projet selon le modèle « Science Europe : modèle structuré », modèle désormais adopté par l’Institut Pasteur.

Utiliser l’outil DMP OPIDoR permet de :- Travailler à plusieurs sur le PGD, y compris avec vos partenaires français ou étrangers- Mettre à jour facilement son PGD au cours du projet- Exporter son PGD au format PDF, Word, HTML ou JSON
Seismology of the Wounded Sun
Creators: name: Cally, Paul S.
name: Moradi, Hamed
Publisher: name: arXiv
Year: 2013
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: Active regions are open wounds in the Sun's surface. Seismic oscillations from the interior pass through them into the atmosphere, changing their nature in the process to fast and slow magneto-acoustic waves. The fast waves then partially reflect and partially mode convert to upgoing and downgoing Alfvén waves. The reflected fast and downgoing Alfvén waves then re-enter the interior through the active regions that spawned them, infecting the surface seismology with signatures of the atmosphere. Using numerical simulations of waves in uniform magnetic fields, we calculate the upward acoustic and Alfvénic losses in the atmosphere as functions of field inclination and wave orientation as well as the Time-Distance `travel time' perturbations, and show that they are related. Travel time perturbations relative to quiet Sun can exceed 40 seconds in 1 kG magnetic field. It is concluded that active region seismology is indeed significantly infected by waves leaving and re-entering the interior through magnetic wounds, with differing travel times depending on the orientation of the wave vector relative to the magnetic field. This presages a new directional-time-distance seismology.
description: 10 pages, 8 figures, accepted for publication in MNRAS (Aug 5 2013)
The role of inhibitory deep dorsal horn parvalbumin interneurons in multimodal sensorimotor integration for locomotion
Creators: name: Ozeri-Engelhard, Nofar
Publisher: name: No Publisher Supplied
Year: 2023

description: To achieve smooth motor performance in a rich and changing sensory environment, motor outputs must be constantly updated in response to sensory feedback. Although proprioception and cutaneous information are known to modulate motor output, it is unclear how they work together in the spinal cord to shape rhythmic motor actions, such as locomotion. Here we identify the medial deep dorsal horn (mDDH) as the epicenter for convergent proprioceptive and cutaneous information, recruited during walking. Within this zone of convergence we find that inhibitory neurons are particularly recruited, likely due to increased excitability and sensitivity to sensory input. To study inhibitory neurons in this region, we target a large group of glycinergic mDDH interneurons identified by their expression of parvalbumin (dPVs). dPV electrophysiological and morphological properties demonstrate recruitment during locomotion, role in sensorimotor processing, and high-gain, faithful encoding of sensory input. In support of a role in sensorimotor processing, we identify dPVs as a node for multimodal convergence (proprioceptive, cutaneous and cortical input) and output divergence, inhibiting diverse motor and premotor neurons. We demonstrate that the temporal dynamics of dPV activity is shaped by activation of sensory inputs; reducing spike timing variability and promoting oscillatory- like activity. We therefore propose that sensory-evoked activity in dPVs set the timing of output targets. To test this hypothesis, we devise a genetic strategy for specific ablation of dPVs. Electromyogram muscle recordings reveal that dPV ablation results in faster sensory- evoked muscle response, due to loss of dPV inhibition. dPV ablation does not change mice corrective reflexes. However, we observe phase- and speed-dependent changes to stride duration, frequency, interlimb coordination, gait transitions, and joint angles during treadmill walk. Together, our data suggest that convergent sensory inputs work in concert to coordinate the activity of dPVs, and in-turn regulate motor output in a contextually relevant manner.
Establishing an analogue population for the most distant galaxies
Creators: name: Stanway, Elizabeth R.
name: Davies, Luke J. M.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Lyman break analogues (LBAs) are local galaxies selected to match a more distant (usually z~3) galaxy population in luminosity, UV-spectral slope and physical characteristics, and so provide an accessible laboratory for exploring their properties. However, as the Lyman break technique is extended to higher redshifts, it has become clear that the Lyman break galaxies (LBGs) at z~3 are more massive, luminous, redder, more extended and at higher metallicities than their z~5 counterparts. Thus extrapolations from the existing LBA samples (which match z=3 properties) have limited value for characterising z>5 galaxies, or inferring properties unobservable at high redshift. We present a new pilot sample of twenty-one compact star forming galaxies in the local (0.05~5 LBGs. Analysis of optical emission line indices suggests that these sources have typical metallicities of a few tenths Solar (again, consistent with the distant population). We also present radio continuum observations of a subset of this sample (13 sources) and determine that their radio fluxes are consistent with those inferred from the ultraviolet, precluding the presence of a heavily obscured AGN or significant dusty star formation.
description: 13 pages, MNRAS accepted
Gravitational instability of planetary gaps and its effect on orbital migration
Creators: name: Lin, Min-Kai
name: Cloutier, Ryan
Publisher: name: arXiv
Year: 2014
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Gap formation by giant planets in self-gravitating disks may lead to a gravitational edge instability (GEI). We demonstrate this GEI with global 3D and 2D self-gravitating disk-planet simulations using the ZEUS, PLUTO and FARGO hydrodynamic codes. High resolution 2D simulations show that an unstable outer gap edge can lead to outwards orbital migration. Our results have important implications for theories of giant planet formation in massive disks.
description: Published in the proceedings of IAUS 299. Associated paper is arXiv:1306.2514. Poster can be found at http://cita.utoronto.ca/~mklin924/IAUposter.pdf
Toward a Unified Performance and Power Consumption NAND Flash Memory Model of Embedded and Solid State Secondary Storage Systems
Creators: name: Olivier, Pierre
name: Boukhobza, Jalil
name: Senn, Eric
Publisher: name: arXiv
Year: 2013
Subjects: subject: Performance (cs.PF)
subject: FOS: Computer and information sciences

description: This paper presents a set of models dedicated to describe a flash storage subsystem structure, functions, performance and power consumption behaviors. These models cover a large range of today's NAND flash memory applications. They are designed to be implemented in simulation tools allowing to estimate and compare performance and power consumption of I/O requests on flash memory based storage systems. Such tools can also help in designing and validating new flash storage systems and management mechanisms. This work is integrated in a global project aiming to build a framework simulating complex flash storage hierarchies for performance and power consumption analysis. This tool will be highly configurable and modular with various levels of usage complexity according to the required aim: from a software user point of view for simulating storage systems, to a developer point of view for designing, testing and validating new flash storage management systems.