cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Risk of further surgery on the same or opposite side and mortality after primary total hip arthroplasty: A multi-state analysis of 133,654 patients from the Swedish Hip Arthroplasty Register
Creators: name: Cnudde, Peter H J
name: Szilard Nemes
name: Bülow, Erik
name: A John Timperley
name: Whitehouse, Sarah L
name: Kärrholm, Johan
name: Rolfson, Ola
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Space Science
subject: Medicine
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences

description: Background and purpose — The hip-related timeline of patients following a total hip arthroplasty (THA) can vary. Ideally patients will live their life without need for further surgery; however, some will undergo replacement on the contralateral hip and/or reoperations. We analyzed the probability of mortality and further hip-related surgery on the same or contralateral hip. Patients and methods — We performed a multi-state survival analysis on a prospectively followed cohort of 133,654 Swedish patients undergoing an elective THA between 1999 and 2012. The study used longitudinally collected information from the Swedish Hip Arthroplasty Register and administrative databases. The analysis considered the patients’ sex, age, prosthesis type, surgical approach, diagnosis, comorbidities, education, and civil status. Results — During the study period patients were twice as likely to have their contralateral hip replaced than to die. However, with passing time, probabilities converged and for a patient who only had 1 non-revised THA at 10 years, there was an equal chance of receiving a second THA and dying (24%). It was 8 times more likely that the second hip would become operated with a primary THA than that the first hip would be revised. Multivariable regression analysis reinforced the influence of age at operation, sex, diagnosis, comorbidity, and socioeconomic status influencing state transition. Interpretation — Multi-state analysis can provide a comprehensive model of further states and transition probabilities after an elective THA. Information regarding the lifetime risk for bilateral surgery, revision, and death can be of value when discussing the future possible outcomes with patients, in healthcare planning, and for the healthcare economy.
title: 01_2814
Creators: name: Wesley Baldwin, John
name: Baldwin, John W.
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2018
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: L'ensemble de ces notes ont été crée par John Baldwin lors d'une de ses premières périodes de résidence à Paris. Ces documents comprennent tous les magistri qu’il avait pu rencontrer dans ses sources. Aux XIIème et XIIIème siècles, les universités n'existant pas encore, le titre de magister s'il évoque certainement une compétence n'est pas rattaché de façon systématique au passage par les écoles. De surcroît, les magistris sont le plus souvent désignés par leur seul prénom. La lecture de ces données est donc difficile et suppose un long travail pour tenter d'identifier un individu auquel on pourrait rattacher plusieurs mentions. John Baldwin avait donc renoncé à utiliser ces données pour donner un prolongement à sa magnifique étude sur les gradués d'université et leur emploi par les Capétiens et les Plantagenêts. Néanmoins, il a conservé ces données et elles sont potentiellement très utile dans le cadre de Studium, comme le sont toutes les mentions dans les volumes des Fasti Ecclesiae Gallicanae de chanoines portant ce titre de magister sans autres précisions. L'ampleur des dépouillements rend ces données très utiles et nous devons une grande reconnaissance à John Baldwin pour avoir pris la peine de faire photocopier ses fiches et de nous les avoir transmises amicalement.
Les données ainsi que les images des fiches sont accessibles sur le site Internet à l'adresse suivante : http://studium-baldwin.lamop.fr/.
Les transcriptions des fiches ont été effectuées par des étudiants de Paris 1 Panthéon - Sorbonne mais elles n'ont pas été corrigées par la suite.
description: Relation: https://lamop.hypotheses.org/
Synthesis and crystal structures of two new uranyl coordination compounds obtained in aqueous solutions of 1-butyl-2,3-dimethylimidazolium chloride
Creators: name: Fangyuan Wang
name: Mei, Lei
name: Weiqun Shi
name: Taiwei Chu
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Physiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: Inorganic Chemistry
subject: Computational Biology

description: Two new uranyl coordination compounds, [C9H17N2]3[(UO2)2(CrO4)2Cl2(H2O)2]Cl·5H2O (1) and (C9H17N2)[(UO2)(C2O4)Cl] (2), have been synthesized by adding potassium dichromate (K2Cr2O7) or oxalic acid dihydrate (H2C2O4·2H2O) solution into an aqueous solution of uranyl nitrate and 1-butyl-2,3-dimethylimidazolium chloride [Bmmim]Cl. [Bmmim]Cl provides the charge balance and Cl ions that coordinate with uranyl ions. The fundamental building units of 1 and 2 are UO6Cl pentagonal bipyramidal structures. Compound 1 exhibits a graphene-like structure with a system molar ratio of 1:1 for U:Cr and crystallizes in the orthorhombic space group Pbca, with a = 25.644(3) Å, b = 12.996(14) Å and c = 29.198(4) Å. 16-Membered rings are formed by CrO42− and UO22+ in the crystal structure of 1. Compound 2 crystallizes in monoclinic space group P21/n, with a = 10.759(3) Å, b = 11.395(3) Å, c = 14.149(4) Å, β = 102.962(9)° and shows one-dimensional (1D) serrated chains. Within the crystal structures of 1 and 2, C–H[Bmmim]Cl⋯O hydrogen bonds are identified. O–Hwater⋯Cl hydrogen bonds are also detected in the crystal structure for 1.
Landau levels in QCD in an external magnetic field
Creators: name: Bruckmann, Falk
name: Endrodi, Gergely
name: Giordano, Matteo
name: Katz, Sandor D.
name: Kovacs, Tamas G.
name: Pittler, Ferenc
name: Wellnhofer, Jacob
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We will discuss the issue of Landau levels of quarks in lattice QCD in an external magnetic field. We will show that in the two-dimensional case the lowest Landau level can be identified unambiguously even if the strong interactions are turned on. Starting from this observation, we will then show how one can define a "lowest Landau level" in the four-dimensional case, and discuss how much of the observed effects of a magnetic field can be explained in terms of it. Our results can be used to test the validity of low-energy models of QCD that make use of the lowest-Landau-level approximation.
description: 8 pages, 5 figures; to appear in the proceedings of the 35th International Symposium on Lattice Field Theory (Lattice 2017), June 19-24, 2017, Granada, Spain
Classical Field Theory and Analogy Between Newton's and Maxwell's Equations
Creators: name: Oziewicz, Z.
Publisher: name: arXiv
Year: 1993
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: A bivertical classical field theory include the Newtonian mechanics and Maxwell's electromagnetic field theory as the special cases. This unification allows to recognize the formal analogies among the notions of Newtonian mechanics and Maxwell's electrodynamics.
description: 27 pages
title: ADCO, Cinquième cartulaire de Saint-Étienne de Dijon (1664), Cart. 28 (G 132), 258 folios, f. 00350
Creators: name: de la Côte d'Or, Archives départementales
name: Archives Départementales De La Côte-D'Or
name: Petot, Frédérique
name: Projet CBMA
name: CG21/F.PETOT/2012
name: Petot, Frédéric
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2020
Subjects: subject: cartulaire
subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris
subject: Corpus Burgundiae Medii Aevi
subject: Chartes de la Bourgogne du Moyen Âge

description: Cinquième cartulaire de Saint-Étienne de Dijon (1664), Archives départementales de la Côte-d'Or, Cart. 28 (G 132), 258 folios, f. 00350, Numérisation en mode image.
description: Relation: http://www.cbma-project.eu/
description: Bibliographic citation: Cinquième cartulaire de Saint-Étienne de Dijon (1664), Archives départementales de la Côte-d'Or, Cart. 28 (G 132), 258 folios, f. 00350, in Projet CBMA - Corpus Burgundiae Medii Aevi [Ressource en ligne], https://manuscrits.cbma-project.eu/
description: Provenance: abbaye Saint-Étienne de Dijon
description: Provenance: http://www.wikidata.org/entity/Q15945019
Tuning alloy disorder in diluted magnetic semiconductors in high fields to 89 T
Creators: name: Crooker, S. A.
name: Samarth, N.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Alloy disorder in II-VI diluted magnetic semiconductors (DMS) is typically reduced when the local magnetic spins align in an applied magnetic field. An important and untested expectation of current models of alloy disorder, however, is that alloy fluctuations in many DMS compounds should increase again in very large magnetic fields of order 100 tesla. Here we measure the disorder potential in a Zn$_{.70}$Cd$_{.22}$Mn$_{.08}$Se quantum well via the low temperature photoluminescence linewidth, using a new magnet system to 89 T. Above 70 T, the linewidth is observed to increase again, in accord with a simple model of alloy disorder.
description: 4 pages, 3 figures
Non-iterative triples excitations in equation-of-motion coupled-cluster theory for electron attachment with applications to bound and temporary anions
Creators: name: Jagau, Thomas-C.
Publisher: name: arXiv
Year: 2017
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: The impact of residual electron correlation beyond the equation-of-motion coupled-cluster singles and doubles approximation (EOM-CCSD) on positions and widths of electronic resonances is investigated. To establish a method that accomplishes this task in an economical manner, several approaches proposed for the approximate treatment of triples excitations are reviewed with respect to their performance in the electron attachment (EA) variant of EOM-CC theory. The recently introduced EOM-CCSD(T)(a)* method, which includes non-iterative corrections to the reference and the target states, reliably reproduces vertical attachment energies from EOM-EA-CC calculations with singles, doubles, and full triples excitations in contrast to schemes in which non-iterative corrections are applied only to the target states. Applications of EOM-EA-CCSD(T)(a)* augmented by a complex absorbing potential (CAP) to several temporary anions illustrate that shape resonances are well described by EOM-EA-CCSD, but that residual electron correlation often makes a non-negligible impact on their positions and widths. The positions of Feshbach resonances, on the other hand, are significantly improved when going from CAP-EOM-EA-CCSD to CAP-EOM-EA-CCSD(T)(a)*, but the correct energetic order of the relevant electronic states is still not achieved.
description: 23 pages in preprint format including 3 figures, 2 tables, and 76 references
ОЦЕНКА СООТВЕТСТВИЯ ПОЧВЕННО-АГРОХИМИЧЕСКИХ УСЛОВИЙ КАНСКОЙ ЛЕСОСТЕПИ БИОЛОГИЧЕСКИМ ПОТРЕБНОСТЯМ РАСТЕНИЙ РАПСА И РЫЖИКА
Creators: name: КУРАЧЕНКО Н.Л.
name: УЛЬЯНОВА О.А.
name: ВЛАСЕНКО О.А.
name: БОПП В.Л.
name: КАЗАНОВ В.В.
Publisher: name: Достижения науки и техники АПК
Year: 2019
Subjects: АГРОЧЕРНОЗЕМЫ
ПОЧВЕННЫЙ ПОКРОВ
ПЛОТНОСТЬ СЛОЖЕНИЯ
ТЕМПЕРАТУРА ПОЧВЫ
ГУМУС
АГРОХИМИЧЕСКИЕ СВОЙСТВА
РАПС ЯРОВОЙ (BRASSICA NAPUS)
РЫЖИК ПОСЕВНОЙ (CAMELINA SATIVA)
AGROCHERNOZEMS
SOIL COVER
SOIL DENSITY
SOIL TEMPERATURE
HUMUS
AGROCHEMICAL PROPERTIES
SPRING RAPE (BRASSICA NAPUS)
CAMELINA (CAMELINA SATIVA)

description: Исследования осуществляли с целью почвенно-агрохимической оценки агрочерноземов ООО «ОПХ Солянское» Канской лесостепи Красноярского края на пригодность для выращивания рапса и рыжика. Обследование проводили на двух участках пашни зернопарового севооборота площадью по 5 га. В структуре почвенного покрова ключевого участка № 1 с широкоувалистым рельефом и слабо выраженным микрорельефом, определенным под посев рапса, доминировали агрочерноземы глинисто-иллювиальные типичные среднемощные и мощные. Ключевой участок № 2 под посев рыжика расположен на пологом склоне широкого увала и характеризуется комплексностью почвенного покрова. Он представлен сочетанием агрочерноземов глинисто-иллювиальных типичных разных видов, агрочерноземов глинистоиллювиальных оподзоленных мощных и агрочерноземов криогенно-мицеллярных маломощных. Перед посевом культур почвы характеризовались рыхлым сложением (0,76 г/см3) и удовлетворительными запасами влаги (30.32 мм) в слое 0.20 см. При высоком потенциальном плодородии исследованные черноземы отличались низкой обеспеченностью нитратным азотом (6.8 мг/кг), очень высокой подвижным фосфором (307 мг/кг), средней калием (59.66 мг/кг). Неоднородность почвенного покрова склонового участка (№2) фактор, определяющий среднестатистическое снижение запасов продуктивной влаги на 2 мм, содержания гумуса на 1 % и нитратного азота на 2 мг/кг, а также увеличение пространственного варьирования содержания гумуса и продуктивной влаги в слое 0.20 см до 12.21 %, подвижных форм элементов питания в слое 0.40 см до 22.33 %. Поля с выраженным мезои микрорельефом и наличием маломощных видов агрочерноземов можно рекомендовать к использованию под посевы рыжика, как менее требовательной к почвенным условиям культуры, чем рапс.
Additional file 1 of Impairments in brain perfusion, executive control network, topological characteristics, and neurocognition in adult patients with asymptomatic Moyamoya disease
Creators: name: He, Shihao
name: Liu, Ziqi
name: Wei, Yanchang
name: Duan, Ran
name: Xu, Zongsheng
name: Zhang, Cai
name: Yuan, Li
name: Li, Tian
name: Ma, Ning
name: Lou, Xin
name: Liu, Xiaoyuan
name: Wang, Rong
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Cell Biology
subject: Neuroscience
subject: Physiology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Mental Health

description: Additional file 1: Figure 1. Difference in degree centrality between the two study groups. Figure 2. Histogram showing degree of centrality. G1, healthy controls; G2, patients with Moyamoya disease. Figure 3. Difference in nodal efficiency between the two study groups. Figure 4. Histogram showing nodal efficiency. G1, healthy controls; G2, patients with Moyamoya disease. The bar represents the mean and the errorbar represents the standard deviation. Figure 5. Difference in nodal local efficiency between the two study groups. Figure 6. Histogram showing nodal local efficiency. G1, healthy controls; G2, patients with Moyamoya disease. The bar represents the mean and the errorbar represents the standard deviation. Table 1. Differences in degree centrality between the study groups. Table 2. Differences in nodal efficiency between the study groups. Table 3. Difference in nodal local efficiency between the two study groups.
A Fractal Analysis of the HI Emission from the Large Magellanic Cloud
Creators: name: Elmegreen, Bruce G.
name: Kim, Sungeun
name: Staveley-Smith, Lister
Publisher: name: arXiv
Year: 2000
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: A composite map of HI in the LMC using the ATCA interferometer and the Parkes multibeam telescope was analyzed in several ways in an attempt to characterize the structure of the neutral gas and to find an origin for it. Fourier transform power spectra in 1D, 2D, and in the azimuthal direction were found to be approximate power laws over 2 decades in length. Delta-variance methods also showed the same power-law structure. Detailed models of these data were made using line-of-sight integrals over fractals that are analogous to those generated by simulations of turbulence with and without phase transitions. The results suggested a way to measure directly for the first time the line-of-sight thickness of the cool component of the HI disk of a nearly face-on galaxy. The signature of this thickness was found to be present in all of the measured power spectra. The character of the HI structure in the LMC was also viewed by comparing positive and negative images of the integrated emission. The geometric structure of the high-emission regions was found to be filamentary, whereas the geometric structure of the low-emission (intercloud) regions was found to be patchy and round. This result suggests that compressive events formed the high-emission regions, and expansion events, whether from explosions or turbulence, formed the low-emission regions. The character of the structure was also investigated as a function of scale using unsharp masks. All of these results suggest that most of the ISM in the LMC is fractal, presumably the result of pervasive turbulence, self-gravity, and self-similar stirring.
description: 30 pages, 21 figures, scheduled for ApJ Vol 548n1, Feb 10, 2001
Observational Study on the Fine Structure and Dynamics of a Solar Jet. II. Energy Release Process Revealed by Spectral Analysis
Creators: name: Sakaue, Takahito
name: Tei, Akiko
name: Asai, Ayumi
name: Ueno, Satoru
name: Ichimoto, Kiyoshi
name: Shibata, Kazunari
Publisher: name: arXiv
Year: 2017
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We report a solar jet phenomenon associated with the C5.4 class flare on 2014 November 11. The data of jet was provided by Solar Dynamics Observatory (SDO), X-Ray Telescope (XRT) aboard Hinode, Interface Region Imaging Spectrograph (IRIS) and Domeless Solar Telescope (DST) at Hida Observatory, Kyoto University. These plentiful data enabled us to present this series of papers to discuss the entire processes of the observed phenomena including the energy storage, event trigger, and energy release. In this paper, we focus on the energy release process of the observed jet, and mainly describe our spectral analysis on the H-alpha data of DST to investigate the internal structure of the H-alpha jet and its temporal evolution. This analysis reveals that in the physical quantity distributions of the H-alpha jet, such as line-of-sight velocity and optical thickness, there is a significant gradient in the direction crossing the jet. We interpret this internal structure as the consequence of the migration of energy release site, based on the idea of ubiquitous reconnection. Moreover, by measuring the horizontal flow of the fine structures in jet, we succeeded in deriving the three-dimensional velocity field and the line-of-sight acceleration field of the H-alpha jet. The analysis result indicates a part of ejecta in the H-alpha jet experienced the additional acceleration after it had been ejected from the lower atmosphere. This secondary acceleration was specified to occur in the vicinity of the intersection between the trajectories of the H-alpha jet and X-ray jet observed by Hinode/XRT. We propose that a fundamental cause of this phenomenon is the magnetic reconnection involving the plasmoid in the observed jet.
description: 21 pages, 22 figures, accepted for publication in PASJ
ВЛАГООБЕСПЕЧЕННОСТЬ ПОСЕВОВ ТВЕРДОЙ ОЗИМОЙ ПШЕНИЦЫ ПРИ ВОЗДЕЛЫВАНИИ ПО РАЗЛИЧНЫМ ПРЕДШЕСТВЕННИКАМ
Creators: name: ПОПОВ А.С.
Publisher: name: Достижения науки и техники АПК
Year: 2019
Subjects: ТВЕРДАЯ ОЗИМАЯ ПШЕНИЦА (TRITICUM DURUM DESF)
ПРЕДШЕСТВЕННИКИ
ПРОДУКТИВНАЯ ВЛАГА
ВЛАГООБЕСПЕЧЕННОСТЬ
УРОЖАЙНОСТЬ
DURUM WINTER WHEAT (TRITICUM DURUM DESF)
FORECROPS
PRODUCTIVE MOISTURE
MOISTURE PROVISION
YIELD

description: Цель исследований изучить влагообеспеченность посевов твердой озимой пшеницы в зависимости о предшественников для разработки элементов технологий возделывания культуры в условиях изменяющегося климата. Работу выполняли в 2010-2018 гг в Ростовской области. Материалом для исследования служили сорта твердой озимой пшеницы Аксинит, Кремона, Амазонка, Агат донской, Курант, Кристелла, Лазурит. Почва опытного участка чернозём обыкновенный с содержанием гумуса до 4 %, NO3 -15...25 мг/кг Р2О5 20... 30 мг/кг, Кр 320.400 мг/кг. Предшественники горох и черный пар. В 2010-2013 гг влагообеспеченность посевов характеризовалась, как недостаточная (ГТК=0,76), в 2013-2016 гг. оптимальная (ГТК=1,2), в 2016-2018 гг слабая засуха (ГТК=0,67). Перед посевом по пару складывались благоприятные условия для своевременных всходов, по гороху они появились только после осадков. К фазе всходов в пахотном горизонте запас продуктивной влаги по предшественнику черный пар увеличился до 38,9 мм, по гороху до 29,0 мм, что на 13,8 и 16,5 мм больше, чем при посеве. Наибольшее содержание продуктивной влаги отмечено в период возобновления весенней вегетации: по пару оно соответствовало хорошему уровню (144,6 мм), по гороху удовлетворительному (136,2 мм). В благоприятные по режиму увлажнения годы (2013-2016 гг.) роль предшественников снижалась (разница между урожайностью в опытных вариантах составляла 0,17 т/га), при недостаточном увлажнении (2010-2013 гг и 2016-2018 гг) увеличивалась (разница1,0 т/га). Расход влаги за вегетацию по пару (403.442 мм) был выше, чем после гороха (353.400 мм). В засушливых условиях роль накопления продуктивной влаги ко времени посева возрастала, при этом независимо от ее запасов урожайность формировалась под влиянием метеоусловий в период вегетации. Доля атмосферных осадков в суммарном водопотреблении по черному пару составляла 87.92 %, по гороху 76.82 %.
Automatic Trading Agent. RMT based Portfolio Theory and Portfolio Selection
Creators: name: Snarska, Malgorzata
name: Krzych, Jakub
Publisher: name: arXiv
Year: 2006
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Computational Engineering, Finance, and Science (cs.CE)
subject: Portfolio Management (q-fin.PM)
subject: Applications (stat.AP)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences
subject: FOS: Economics and business

description: Portfolio theory is a very powerful tool in the modern investment theory. It is helpful in estimating risk of an investor's portfolio, which arises from our lack of information, uncertainty and incomplete knowledge of reality, which forbids a perfect prediction of future price changes. Despite of many advantages this tool is not known and is not widely used among investors on Warsaw Stock Exchange. The main reason for abandoning this method is a high level of complexity and immense calculations. The aim of this paper is to introduce an automatic decision - making system, which allows a single investor to use such complex methods of Modern Portfolio Theory (MPT). The key tool in MPT is an analysis of an empirical covariance matrix. This matrix, obtained from historical data is biased by such a high amount of statistical uncertainty, that it can be seen as random. By bringing into practice the ideas of Random Matrix Theory (RMT), the noise is removed or significantly reduced, so the future risk and return are better estimated and controlled. This concepts are applied to the Warsaw Stock Exchange Simulator http://gra.onet.pl. The result of the simulation is 18 % level of gains in comparison for respective 10 % loss of the Warsaw Stock Exchange main index WIG.
description: 13 pages, 7 figures. Presented at the 2nd Polish Seminar on Econo- and Sociophysics, 2006/04/21-22 Cracow. To be published in Acta Phys. Pol. B
Normal modes of Proca fields in AdS$_d$ spacetime
Creators: name: Lopes, David
name: Fernandes, Tiago V.
name: Lemos, José P. S.
Publisher: name: arXiv
Year: 2024
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The normal modes of Proca field perturbations in $d$-dimensional anti-de Sitter spacetime, AdS$_d$ for short, with reflective Dirichlet boundary conditions, are obtained exactly. Within the Ishibashi-Kodama framework, we decompose the Proca field in scalar-type and vector-type components, according to their tensorial behavior on the $(d-2)$-sphere $\mathcal{S}^{d-2}$. Two of the degrees of freedom of the Proca field are described by scalar-type components, which in general are coupled due to the mass of the field, but in AdS$_d$ we show that they can be decoupled. The other $d-3$ degrees of freedom of the field are described by a vector-type component that generically decouples completely. The normal modes and their frequencies for both the scalar-type and vector-type components of the Proca field are then obtained analytically. Additionally, we analyze the normal modes of the Maxwell field as the massless limit of the Proca field. We find that for scalar-type perturbations in $d=4$ there is a discontinuity in the massless limit, in $d=5$ the massless limit is well defined using Dirichlet-Neumann rather than Dirichlet boundary conditions, and in $d>5$ the massless limit is completely well defined, i.e., it is obtained smoothly from the massless limit of the scalar-type perturbations of the Proca field. For vector-type perturbations the Maxwell field limit is obtained smoothly for all $d$ from the massless limit of the vector-type perturbations of the Proca field.
description: 16 pages
НОВЫЙ ПОДХОД К МЕТОДОЛОГИИ ПРОЕКТИРОВАНИЯ ЛЕСОГИДРОМЕЛИОРАТИВНОГО КОМПЛЕКСА В УСЛОВИЯХ ЦЧР
Creators: name: ПОДЛЕСНЫХ И. В.
name: ЗАРУДНАЯ Т. Я.
name: СОЛОВЬЕВА Ю. А.
Publisher: name: Достижения науки и техники АПК
Year: 2019
Subjects: МЕТОДОЛОГИЯ
АГРОЛАНДШАФТ
ЭРОЗИЯ ПОЧВ
ПРОТИВОЭРОЗИОННАЯ ОРГАНИЗАЦИЯ ТЕРРИТОРИИ
ЛЕСНАЯ ПОЛОСА
ГИДРОТЕХНИЧЕСКИЕ СООРУЖЕНИЯ
METHODOLOGY
AGROLANDSCAPE
SOIL EROSION
ANTI-EROSION ORGANIZATION OF THE TERRITORY
FOREST BELT
HYDRAULIC STRUCTURES

description: Исследования проводили с целью разработки нового подхода к методологии проектирования лесогидромелиоративного комплекса в условиях Центрально-Черноземного района с использованием геоинформационных систем (ГИС) и обоснованием состава пород деревьев в проектируемых лесополосах. Разработанный подход базируется на известных методах расчета и проектирования размещения лесных полос в агроландшафте, но имеет ряд принципиальных особенностей в расчетах с использованием средств ГИС для участков водосборов и совокупностей водосборов в целом с набором индивидуальных показателей рельефа и характеристик стока в каждой определенной точке поверхности, а не для отдельных рабочих участков с осредненными показателями. Еще одна особенность нового подхода использование ГИС не только на этапе визуализации результатов расчета, но и в ходе их проведения. Это позволяет более точно определять местоположение лесополос с учетом характеристик стока и рельефа. Благодаря автоматизации таких расчетов, время проектирования сокращается в 2,5...3,0 раза. Обоснованный для ландшафтно-климатических условий ЦЧР состав пород деревьев для лесополос позволяет добиться стокорегулирующей и противоэрозионной функции насаждений в кратчайшие после высадки сроки. В опыте по контурно-мелиоративному земледелию в Курской области лесогидромелиоративный комплекс, включающий узкую лесную полосу с канавой в междурядье и валом по нижней опушке, уже на второй год способствовал сокращению слоя стока более чем в 2 раза. При этом смыв почвы снижался с 5,0 до 0,8 т/га.
Parafermions, $W$ Strings and their BRST Charges
Creators: name: Freeman, Michael
name: West, Peter
Publisher: name: arXiv
Year: 1993
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We show how to relate the parafermions that occur in the $W_3$ string to the standard construction of parafermions. This result is then used to show that one of the screening charges that occurs in parafermionic theories is precisely the non-trivial part of the $W_3$ string BRST charge. A way of generalizing this pattern for a $W_N$ string is explained. This enables us to construct the full BRST charge for a $W_{2,N}$ string and to prove the relation of such a string to the algebra $W_{N-1}$ for arbitrary $N$, We also show how to calculate part of the BRST charge for a $W_N$ string, and we explain how our method might be extended to obtain the full BRST charge for such a string.
description: 12 pages, KCL-TH-93-14. (Minor corrections to equation 19 and reference 9)
A new β-diketonate Dy(III) single‒ion magnet featuring multiple magnetic relaxation processes
Creators: name: Peipei Cen
name: Xiufang Ma
name: Xiangyu Liu
name: Zhang, Yi-Quan
name: Xie, Gang
name: Sanping Chen
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Genetics
subject: FOS: Biological sciences
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: 69999 Biological Sciences not elsewhere classified

description: A β-diketonate mononuclear dysprosium compound, [Dy(TFNB)3(bpy)] (1) (TFNB = 4,4,4-trifluoro-1-(2-naphthyl)-1,3-butanedione, bpy = 2,2′-bipyridine), has been prepared and structurally and magnetically characterized. X-ray crystallographic analysis reveals that 1 contains two crystallographically equivalent Dy(III) ions of which the eight-coordinate geometries uniformly behave as distorted square antiprismatic configurations (D4d). Magnetic investigations demonstrate that 1 displays dual relaxation processes of SMMs behavior with the effective barrier (ΔE/kB) of 23.44 K under 1200 Oe DC field, corresponding to the coexistence of two metal centers in the structure of the compound. The comparative studies of some Dy(III)-based SIMs with TFNB ligand have been conducted as well. Ab initio studies demonstrate that the Kramers doublet ground state is predominantly axial with the gz tensors of two Dy(III) fragments matching the Ising-limit factor (20) anticipated for the pure MJ = ±15/2 state.
Near-infrared counterparts of three transient very faint neutron star X-ray binaries
Creators: name: Shaw, A. W.
name: Heinke, C. O.
name: Degenaar, N.
name: Wijnands, R.
name: Kaur, R.
name: Forestell, L. M.
Publisher: name: arXiv
Year: 2017
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We present near-infrared (NIR) imaging observations of three transient neutron star X-ray binaries, SAX J1753.5-2349, SAX J1806.5-2215 and AX J1754.2-2754. All three sources are members of the class of `very faint' X-ray transients which exhibit X-ray luminosities $L_X\lesssim10^{36}$ erg s$^{-1}$. The nature of this class of sources is still poorly understood. We detect NIR counterparts for all three systems and perform multi-band photometry for both SAX J1753.5-2349 and SAX J1806.5-2215, including narrow-band Br$_γ$ photometry for SAX J1806.5-2215. We find that SAX J1753.5-2349 is significantly redder than the field population, indicating that there may be absorption intrinsic to the system, or perhaps a jet is contributing to the infrared emission. SAX J1806.5-2215 appears to exhibit absorption in Br$_γ$, providing evidence for hydrogen in the system. Our observations of AX J1754.2--2754 represent the first detection of a NIR counterpart for this system. We find that none of the measured magnitudes are consistent with the expected quiescent magnitudes of these systems. Assuming that the infrared radiation is dominated by either the disc or the companion star, the observed magnitudes argue against an ultracompact nature for all three systems.
description: 10 pages, 10 figures, accepted for publication in MNRAS
ЭФФЕКТИВНОСТЬ ПРИМЕНЕНИЯ БИОЛОГИЧЕСКИХ ПРЕПАРАТОВ ПРИ КОНСЕРВИРОВАНИИ ЛЮЦЕРНЫ
Creators: name: БИКЧАНТАЕВ И.Т.
name: АСКАРОВА А. А.
Publisher: name: Достижения науки и техники АПК
Year: 2019
Subjects: ЛЮЦЕРНА
БИОЛОГИЧЕСКИЕ ПРЕПАРАТЫ МОЛОЧНОКИСЛЫХ БАКТЕРИЙ
СЕНАЖ
ОБМЕННАЯ ЭНЕРГИЯ
МОЛОЧНАЯ КИСЛОТА
ALFALFA
LACTIC ACID BACTERIUM BIOLOGICAL PREPARATIONS
HAYLAGE
METABOLIC ENERGY
LACTIC ACID

description: Лабораторные исследования проводили с целью оценки эффективности использования биологических консервантов при заготовке сочных объемистых кормов из провяленной зеленой массы люцерны посевной (Medicago sativa) сорта Айслу. Люцерну выращивали в Лаишевском районе Республики Татарстан и скашивали в фазе бутонизации. Провяленную массу консервировали в полимерных банках. Биологические препараты Фербак-Сил (Россия) и Сил-Олл (Великобритания) добавляли согласно рекомендациям производителей в дозах 70 мл и 2,5 г на 1 т массы соответственно. Фитомассу тщательно утрамбовывали, герметично закрывали и хранили в затемненном помещении при температуре +8 0С. + 18 0С. Контролем служил вариант без консервантов. Содержание сухого вещества в провяленной массе люцерны перед закладкой на хранение составляло 41,4 %, обменной энергии 3,57 МДж, сырого протеина 8,41 %, сумма сахаров 35,87 г, каротина 31,28 мг/кг натурального корма. Среди испытуемых образцов лучшие результаты обеспечил препарат Фербак-Сил, применение которого стимулировало молочнокислое брожение в фитомассе. Это в свою очередь положительно отразилось на сохранности сухого вещества и обменной энергии, концентрация которых в готовом сенаже составила соответственно 43,50 % и 3,75 МДж, и была выше контроля на 5,47 % и 13,98 %. Использование препарата Сил-Олл способствовало максимальному в опыте увеличению образования органических кислот (молочная, уксусная) на 1,15 %. Содержание каротина в корме с добавлением этого консерванта было выше, чем в контроле, на 16,69 %.
Elastic Spin Relaxation Processes in Semiconductor Quantum Dots
Creators: name: Semenov, Y. G.
name: Kim, K. W.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Other Condensed Matter (cond-mat.other)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Electron spin decoherence caused by elastic spin-phonon processes is investigated comprehensively in a zero-dimensional environment. Specifically, a theoretical treatment is developed for the processes associated with the fluctuations in the phonon potential as well as in the electron procession frequency through the spin-orbit and hyperfine interactions in the semiconductor quantum dots. The analysis identifies the conditions (magnetic field, temperature, etc.) in which the elastic spin-phonon processes can dominate over the inelastic counterparts with the electron spin-flip transitions. Particularly, the calculation results illustrate the potential significance of an elastic decoherence mechanism originating from the intervalley transitions in semiconductor quantum dots with multiple equivalent energy minima (e.g., the X valleys in SiGe). The role of lattice anharmonicity and phonon decay in spin relaxation is also examined along with that of the local effective field fluctuations caused by the stochastic electronic transitions between the orbital states. Numerical estimations are provided for typical GaAs and Si-based quantum dots.
description: 57 pages, 14 figures
ПЕРСПЕКТИВЫ ПРИМЕНЕНИЯ ПРЕПАРАТА МЕФОСФОН ДЛЯ ПРОИЗВОДСТВА УДОБРЕНИЙ ИЗ КУРИНОГО ПОМЕТА
Creators: name: СИБАГАТУЛЛИН Ф. С.
name: ХАЛИУЛЛИНА З.М.
name: ПЕТРОВ М.
name: СИНЯШИН К. О.
Publisher: name: Достижения науки и техники АПК
Year: 2019
Subjects: МЕФОСФОН
КУРИНЫЙ ПОМЕТ
КОМПОСТ «УП-1»
УРОЖАЙНОСТЬ
MEPHOSPHON
CHICKEN MANURE
UP-1 COMPOST
YIELD

description: Представлены результаты исследования влияния препарата Мефосфон (водный раствор соли бис(окси)метил фосфиновой кислоты, проявляющий высокую биологическую активность как регулятор вторичного метаболизма органических субстратов в различных биотехнологических процессах) на продолжительность компостирования и эффективность обеззараживания бесподстилочного куриного помета с оценкой возможности использования полученного продукта в качестве удобрения при выращивании зерновых культур. Обработку помета проводили водным раствором препарата Мефосфон с одновременным перемешиванием в течение двух месяцев. Конечные значения реакции среды в компосте (в необработанном 6,8 ед. рН, в обработанном 7,5 ед. рН), повышенное содержание азота (в 1,3 раза больше, чем в ПК) указывают на более глубокий распад органических соединений, в том числе кислот. Микробиологические показатели полученного продукта (Компост «УП-1») соответствовали требованиям ГОСТ Р 53117-2008. На 65-е сутки после начала компостировали представители патогенных микроорганизмов отсутствовали, индексы бактерий группы кишечной палочки и энтерококков позволили отнести исследуемые образцы к категории чистых. Полевые испытания проводили в 2018-2019 гг на дерново-подзолистых среднесуглинистых почвах Республики Татарстан на яровой мягкой пшенице Йолдыз по схеме: без удобрений -контроль (К); помет компостированный (ПК); компост «УП-1» (УП-1). Технология изготовления органического удобрения из куриного помета влияет на структуру урожая. Пшеница, выращенная на фоне компоста «УП-1», отличалась более высоким коэффициентом кущения и количеством зерен в колосе, по сравнению с другими вариантами. Прирост урожая, относительно контроля, в 2018 г. составил 2,6 т/га, в 2019 г 2,7 т/га. Зерно, произведенное в этом варианте, характеризовалось более высокими показателями стекловидности (контроль 60 %, ПК 63 %, УП-1 82 %) и массовой доли сырой клейковины (15,7 %, 16,4 %, 21,1 % соответственно).
Detecting Brain Tumors through Multimodal Neural Networks
Creators: name: Curci, Antonio
name: Esposito, Andrea
Publisher: name: arXiv
Year: 2024
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: Machine Learning (cs.LG)
subject: Quantitative Methods (q-bio.QM)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences
subject: FOS: Biological sciences
subject: I.5.4

description: Tumors can manifest in various forms and in different areas of the human body. Brain tumors are specifically hard to diagnose and treat because of the complexity of the organ in which they develop. Detecting them in time can lower the chances of death and facilitate the therapy process for patients. The use of Artificial Intelligence (AI) and, more specifically, deep learning, has the potential to significantly reduce costs in terms of time and resources for the discovery and identification of tumors from images obtained through imaging techniques. This research work aims to assess the performance of a multimodal model for the classification of Magnetic Resonance Imaging (MRI) scans processed as grayscale images. The results are promising, and in line with similar works, as the model reaches an accuracy of around 98\%. We also highlight the need for explainability and transparency to ensure human control and safety.
description: Presented at NeroPRAI 2024 (co-located with ICPRAM 2024). This version did not undergo peer review: refer to the open access version of record (see DOI)
The GREENBOT dataset: Multimodal mobile robotic dataset for a typical Mediterranean greenhouse
Creators: name: Cañadas-Aránega, Fernando
name: Blanco-Claraco, Jose Luis
name: Moreno, Jose Carlos
name: Rodriguez, Francisco
Publisher: name: arXiv
Year: 2024
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: This paper introduces an innovative dataset specifically crafted for challenging agricultural settings (a greenhouse), where achieving precise localization is of paramount importance. The dataset was gathered using a mobile platform equipped with a set of sensors typically used in mobile robots, as it was moved through all the corridors of a typical Mediterranean greenhouse featuring tomato crop. This dataset presents a unique opportunity for constructing detailed 3D models of plants in such indoor-like space, with potential applications such as robotized spraying. For the first time to the best knowledge of authors, a dataset suitable to put at test Simultaneous Localization and Mapping (SLAM) methods is presented in a greenhouse environment, which poses unique challenges. The suitability of the dataset for such goal is assessed by presenting SLAM results with state-of-the-art algorithms. The dataset is available online in \url{https://arm.ual.es/arm-group/dataset-greenhouse-2024/}.
description: 29 pages, 15 figures
Simulations of Stellar Core Collapse, Bounce, and Postbounce Evolution with Boltzmann Neutrino Transport, and Implications for the Core Collapse Supernova Mechanism
Creators: name: Mezzacappa, A.
Publisher: name: arXiv
Year: 2000
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In this paper, we present results from a simulation of stellar core collapse, bounce, and postbounce evolution with Boltzmann neutrino transport. We motivate the development of our Boltzmann solver in light of the sensitivity of the neutrino-heating core collapse supernova paradigm to details in the neutrino transport, particularly near the neutrinospheres, where the neutrinos are neither diffusing nor free streaming and a kinetic description is necessary, and in light of the mixed outcomes and transport approximations used in all prior supernova models in both one and two dimensions. We discuss the implications of our findings for the supernova mechanism and future supernova research. We also present the results of a Boltzmann transport prediction of the early neutrino light curves in the model included here.
description: To appear in the proceedings of Neutrino 2000, Laurentian University, Sudbury, Canada, June 16-21, 2000
ДЕЙСТВИЕ АНТИОКСИДАНТОВ НА РОСТ РАСТЕНИЙ
Creators: name: ПАХОМОВА В.М.
name: ДАМИНОВА А. И.
Publisher: name: Достижения науки и техники АПК
Year: 2019
Subjects: КОРНИ ГОРОХА
СТИМУЛЯЦИЯ РОСТА
ПРИРОДНЫЕ АНТИОКСИДАНТЫ
L-АСКОРБИНОВАЯ КИСЛОТА
-ГЛУТАМИНИЛЦИСТЕИНИЛГЛИЦИН (ГЛУТАТИОН)
КОНЦЕНТРАЦИОННЫЙ ЭФФЕКТ
ДЛИТЕЛЬНОСТЬ ВОЗДЕЙСТВИЯ
НЕСПЕЦИФИЧЕСКИЙ МЕХАНИЗМ
PEA ROOTS
GROWTH STIMULATION
NATURAL ANTIOXIDANTS
L-ASCORBIC ACID
GAMMA-GLUTAMINYL-CYSTEINYL-GLYCINE (GLUTATHIONE)
CONCENTRATION EFFECT
EXPOSURE DURATION
NON-SPECIFIC MECHANISM

description: Цель исследований изучить влияние природных антиоксидантов L-аскорбиновой кислоты и Y-глутаминилцистеинилглицина (глутатиона) в широком диапазоне концентраций (10-13...10-3 М) на ростовую функцию корней гороха (длину главного корня и боковых корней). Равные по размеру неповрежденные семена гороха из урожая 2018 г. проращивали на дистиллированной воде. Затем проростки с длиной зародышевого корешка 0,5 см размещали в чашках Петри на фильтровальной бумаге с соответствующими растворами с уровнем жидкости 1.2 мм в термостате (в темноте) при 26 °С. Измерение корней проводили через 72 и 120 ч воздействия. Контролем служили проростки, выращенные на дистиллированной воде (рН 6,2). Использование изучаемых соединений в концентрации 10-3 М приводило к сильному торможению роста корней. Воздействие 10-5 М растворов в течение 72 ч способствовало существенному увеличению длины главного корня проростков. В случае 120-часового действия этих веществ в концентрации 10-11 М возрастала длина главного корня и развивались боковые корни, что не было отмечено в других вариантах. Выдвинуто предположение о неспецифическом характере ростингибирующего и ростостимулирующего действия растворов L-аскорбиновой кислоты и Y-глутаминилцистеинилглицина (глутатиона) с концентрациями 10-3 М, 10-5 М, 10-11 М. Биоантиоксиданты, по всей вероятности, влияли на процесс роста косвенно. На основании результатов исследований можно планировать использование изученных веществ в качестве стимуляторов и ингибиторов роста растений.
Fractional damping induces resonant behavior in the Duffing oscillator
Creators: name: Coccolo, Mattia
name: Seoane, Jesús M.
name: Sanjuán, Miguel A. F.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: The interaction between the fractional order parameter and the damping parameter can play a relevant role for introducing different dynamical behaviors in a physical system. Here, we study the Duffing oscillator with a fractional damping term. Our findings show that for certain values of the fractional order parameter, the damping parameter, and the forcing amplitude high oscillations amplitude can be induced. This phenomenon is due to the appearance of a resonance in the Duffing oscillator only when the damping term is fractional.
description: 19 pages, 12 figures
A new β-diketonate Dy(III) single‒ion magnet featuring multiple magnetic relaxation processes
Creators: name: Peipei Cen
name: Xiufang Ma
name: Xiangyu Liu
name: Zhang, Yi-Quan
name: Xie, Gang
name: Sanping Chen
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Genetics
subject: FOS: Biological sciences
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: 69999 Biological Sciences not elsewhere classified

description: A β-diketonate mononuclear dysprosium compound, [Dy(TFNB)3(bpy)] (1) (TFNB = 4,4,4-trifluoro-1-(2-naphthyl)-1,3-butanedione, bpy = 2,2’-bipyridine), has been prepared and structurally and magnetically characterized. X-ray crystallographic analysis reveals that 1 contains two crystallographically equivalent Dy(III) ions of which the eight-coordinate geometries uniformly behave as distorted square antiprismatic configurations (D4d). Magnetic investigations demonstrate that 1 displays dual relaxation processes of SMMs behavior with the effective barrier (ΔE/kB) of 23.44 K under 1200 Oe DC field, corresponding to the coexistence of two metal centers in the structure of the compound. The comparative studies of some Dy(III)-based SIMs with TFNB ligand have been conducted as well. Ab initio studies demonstrate that the Kramers doublet ground state is predominantly axial with the gz tensors of two Dy(III) fragments matching the Ising-limit factor (20) anticipated for the pure MJ = ±15/2 state.
Isomerization as a tool to design volatile heterometallic complexes with methoxy-substituted β-diketonates
Creators: name: Krisyuk, Vladislav V.
name: Kyzy, Samara Urkasym
name: Rybalova, Tatyana V.
name: Baidina, Iraida A.
name: Korolkov, Ilya V.
name: Chizhov, Dmitry L.
name: Bazhin, Denis N.
name: Kudyakova, Yulia S.
Publisher: name: Taylor & Francis
Year: 2018
Subjects: subject: Biophysics
subject: Biochemistry
subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Pharmacology
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences

description: A series of new heterometallic compounds have been obtained by the co-crystallization of Cu(II) methoxy-substituted β-diketonates and Pb(II) hexafluoroacetylacetonate (hfac) from organic solvents. Their crystal structures were established by X-ray analysis. It is shown that the formation of heterometallic compounds proceeds with geometrical isomerization of the initial copper complexes, which can be controlled by varying terminal substituents in the ligand. Due to the ability of copper complexes to isomerize, the structure of the resulting heterocomplexes can be flexibly and purposefully changed from polymeric to discrete molecular forms. The study of the thermal properties shows that all the reported compounds are volatile and can be re-sublimed in a vacuum, with their composition and structure being retained.