cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Двадцать знаков длинного счета майя среди созвездий
Creators: name: Полякова О.О.
Publisher: name: Archaeoastronomy and Ancient Technologies
Year: 2013
Subjects: ДВАДЦАТЬ КИНОВ
TWENTY OF SIGN-KINS
ДЛИННЫЙ СЧЕТ
LONG COUNT
ЦОЛЬКИН
TZOLKIN
ХААБ
HAAB
ПРЕЦЕССИЯ
PRECESSION
ЭКЛИПТИКА
ECLIPTIC
ПОЛЮС МИРА
THE POLE OF THE WORLD

description: Статья посвящена астрономическому исследованию двадцати знаков длинного счета календаря майя и соответствия их современным общепринятым созвездиям и Знакам Зодиака. Календарь майя имел общераспространенный в исторические времена годичный цикл в 360 дней плюс 5 дней добавочных, называемый у майя Хааб но и содержал другой уникальный цикл Цолькин, длившийся 260 дней. Связкой между Хааб и Цолькин осуществлялась через общую единицу времени Длинного Счета Винал = 20 дней = 20 кинов. Только в системе счета Цолькин важно было считать 20 периодов по 13 дней. Последовательность названий дней в 20-тидневном Винале сохранялась, то есть, через 13 дней начинался новый период, но первый день был 14-м из 20-тидневного винала. Число 20 для майя было любимым, видимо, по количеству пальцев на руках и ногах. Цолькин показывает периодичность длительных циклов Пять Эпох Создания по 5125,3559 лет, равные 25627 годам. Это также равно одному обороту Прецессии Полюса Мира вокруг Полюса Эклиптики. В это время Хааб отмечался знаками-кинами, созвездиями на эклиптике, которые повторялись через 20 дней, наблюдаясь на восходе или заходе, или в зените, в любое время года, благодаря тому, что шли не друг за другом, как принято в старом свете, а через 10 знаков-кинов, на 11-й знак-кин.
description: This paper is devoted to the study of astronomical twenty characters long count calendar of the Maya and their compliance with generally accepted modern constellations and zodiac signs. The Mayan calendar was common in the historical times in the annual cycle of 360 days plus 5 additional days, called the Maya Haab but also contain other unique cycle Tzolkin, which lasted 260 days. Link between the Haab and Tzolkin was carried out through a common unit of time Long Count Vinal = 20 days = 20 kins. System only accounts Tzolkin was considered important by 20 periods of 13 days. The sequence of names in the 20days -five day old Vinal maintained, ie, 13 days later began a new period, but the first day of the next period was the 14th of 20 five day old wine. Number 20 was a favorite for the Maya, probably because using it was convenient to keep score by the number of fingers on the hands and feet. Tzolkin, finally, shows the frequency of very long cycles Five Period of creation for 5125.3559 years, equal to 25,627 years. It is also equal to one revolution of the Precession of the pole around the ecliptic pole. At this time, the Haab celebrated charakters-kins, constellations on the ecliptic, which were repeated in 20 days, watching at sunrise or approach, or at its zenith, at any time of the year, due to the fact that did not go after each other, as is customary in the old world, and through 10 charakters-kins, on the 11th charakters-kins.
Broad relativistic iron emission line observed in SAX J1808.4-3658
Creators: name: Cackett, E. M.
name: Altamirano, D.
name: Patruno, A.
name: Miller, J. M.
name: Reynolds, M.
name: Linares, M.
name: Wijnands, R.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: During the September-October 2008 outburst of the accreting millisecond pulsar SAX J1808.4-3658, the source was observed by both Suzaku and XMM-Newton approximately 1 day apart. Spectral analysis reveals a broad relativistic Fe K-alpha emission line which is present in both data-sets, as has recently been reported for other neutron star low-mass X-ray binaries. The properties of the Fe K line observed during each observation are very similar. From modeling the Fe line, we determine the inner accretion disk radius to be 13.2 +/- 2.5 GM/c^2. The inner disk radius measured from the Fe K line suggests that the accretion disk is not very receded in the island state. If the inner disk (as measured by the Fe line) is truncated at the magnetospheric radius this implies a magnetic field strength of ~3E8 G at the magnetic poles, consistent with other independent estimates.
description: 5 pages, 3 figs, 2 tables, accepted to ApJL
Molecular modeling and simulation of thermophysical properties: Application to pure substances and mixtures
Creators: name: Eckl, Bernhard
name: Horsch, Martin
name: Vrabec, Jadran
name: Hasse, Hans
Publisher: name: arXiv
Year: 2009
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: At the Institute for Thermodynamics and Thermal Process Engineering (ITT) about 100 molecular models for pure substances have been developed so far. These models reproduce vapor pressure, saturated liquid density, and enthalpy of vaporization with a technical accuracy of less than 5%, less than 1%, and less than 5% deviation compared to experimental data, respectively. Simulation results are outlined for the pure substances ethylene oxide and ammonia, demonstrating the outstanding predictive power of the applied methods. Secondly, nucleation processes are discussed. Underlying effects on are studied on the molecular level.
Leveraging Hi-C and whole genome shotgun sequencing for double minute chromosome discovery
Creators: name: Hayes, Matthew
name: Nguyen, Angela
name: Tran, Ethan
name: Mullins, Derrick
name: Chindo Hicks
Publisher: name: F1000 Research Limited
Year: 2020

description: Double minute chromosomes (DM) are highly amplified, acentric, extrachromosomal circular fragments of DNA that are frequently observed in tumor cells of numerous cancer subtypes. They contain oncogenes, making their presence a challenge for effective cancer treatment. The vast majority of methods that reconstruct tumor genome architectures use whole genome sequencing data in isolation which is problematic for accurate reconstruction of extrachromosomal circular DNA. This is because the linear information in isolation makes it difficult to resolve multiple architectures that can can explain the observed data. In this study, we describe a pipeline in development called HolistIC that unambiguously predicts double minutes in tumor genomes by integrating whole genome shotgun sequencing and Hi-C sequencing data to enable accurate DM discovery. The method takes DMs predicted by a WGS-based algorithm and creates an undirected graph where vertices are DM amplicons and edges indicate heighted Hi-C interaction. The predicted DMs are the maximal cliques in this graph.
В память о В. Е. Ларичеве. Астроархеологические изыскания в Северной Хакасии
Creators: name: Гиенко Е.Г.
name: Серкин Г.Ф.
Publisher: name: Archaeoastronomy and Ancient Technologies
Year: 2014
Subjects: АСТРОАРХЕОЛОГИЯ
ASTROARCHAEOLOGY
ХАКАСИЯ
KHAKASSIA

description: Статья посвящена памяти Виталия Епифановича Ларичева (12.12.1932 02.06.2014) выдающегося российского ученого, доктора исторических наук, академика РАЕН, заслуженного деятеля науки Российской Федерации. В течение более чем 30 лет В.Е. Ларичев проводил астроархеологические исследования на севере Хакасии. В статье сделан обзор его деятельности в астроархеологических экспедициях от лица участников этих экспедиций.
description: This article is devoted to the memory V.E. Larichev (12.12.1932 02.06.2014) a prominent Russian scientist, doctor of historical Sciences, academician of the Russian Academy of natural Sciences, and honored worker of science of the Russian Federation. For more than 30 years, V.E. Larichev performed astroarchaeology research in Khakassia. The article provides an overview of his activities during astroarchaeology expeditions, on behalf of the expedition participants.
On Neutral Absorption and Spectral Evolution in X-ray Binaries
Creators: name: Miller, J. M.
name: Cackett, E. M.
name: Reis, R. C.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: Current X-ray observatories make it possible to follow the evolution of transient and variable X-ray binaries across a broad range in luminosity and source behavior. In such studies, it can be unclear whether evolution in the low energy portion of the spectrum should be attributed to evolution in the source, or instead to evolution in neutral photoelectric absorption. Dispersive spectrometers make it possible to address this problem. We have analyzed a small but diverse set of X-ray binaries observed with the Chandra High Energy Transmission Grating Spectrometer across a range in luminosity and different spectral states. The column density in individual photoelectric absorption edges remains constant with luminosity, both within and across source spectral states. This finding suggests that absorption in the interstellar medium strongly dominates the neutral column density observed in spectra of X-ray binaries. Consequently, evolution in the low energy spectrum of X-ray binaries should properly be attributed to evolution in the source spectrum. We discuss our results in the context of X-ray binary spectroscopy with current and future X-ray missions.
description: Accepted for publication in ApJ Letters
Towards networking biomedical data using the CROssBAR API
Creators: name: Vishal Joshi
name: Zellner, Hermann
name: Saidi, Rabie
name: Tunca Dogan
name: Real, Laura Lopez
name: Rifaioglu, Ahmet Sureyya
name: Heval Atas
name: Nightingale, Andrew
name: Atalay, Volkan
name: Rengul Cetin-Atalay
name: Martin, Maria Jesus
Publisher: name: F1000 Research Limited
Year: 2020

description: Drug discovery and precision medicine require various types of omics data as well as powerful tools for investigating the relationships between biological and biomedical entities. Omics data are scattered across different silos, which are biologically related but only loosely linked to each other via cross-references. The CROssBAR platform (Comprehensive Resource of Biomedical Relations) integrates data from varied trusted sources into an exhaustive database which can be publicly queried via a dedicated API.
 CROssBAR utilises its bespoke ETL (Extract-Transform-Load) pipelines designed on highly distributed EMBL-EBI infrastructure. These pipelines implement a multi-omics data integration approach to periodically release a single resource. Data are fetched from various resources (see Table 1) namely, UniProt, InterPro, ChEMBL, PubChem, DrugBank, EFO and HPO; then cleansed, validated and consolidated into highly connected biological and biomedical information. The CROssBAR knowledgebase is hosted and maintained by EMBL-EBI in a MongoDB database. It provides a broad spectrum of information such as functional annotations, pathways, protein interactions, diseases, drugs, chemical compounds, etc. These data can be queried via a public API at: https://www.ebi.ac.uk/Tools/crossbar/swagger-ui.html. The Crossbar API provides a multi faceted view of stored data through 12 endpoints; which allows users to drive biological networks from any facet e.g drug-centric, disease-centric, gene-centric etc.
Home ownership sentiment : attitudes towards ownership of a single family detached house
Creators: name: Skerry, Margaret Jane
Publisher: name: University of British Columbia
Year: 2011

description: Over the years ownership of a single family detached house has become associated with a series of positive sentiments related to the satisfaction of housing needs. It has traditionally been considered as the ultimate goal in housing sought by a majority of the population. This study examines the "home ownership sentiment" to determine its major features and their relative importance in consumer aspirations for this housing alternative. A review of the literature has detailed the attributes of ownership of a single family detached house and corresponding consumer housing satisfactions. A field survey of a selected sample of future housing consumers has given some indication as to the priority of these features in their preference for home ownership. The study findings have suggested important considerations in the satisfaction of housing needs and in particular, areas of concern in the upgrading of alternative forms of housing.
The visiting Nurse Association
Creators: name: Hartved, Marion
Publisher: name: University of Oregon
Year: 1932
Subjects: Public Health Nursing
Nursing Services

description: We sometimes forget that not everyone who is ill does go or can afford to go to a hospital to be cared for by a doctor and nurses. There are many people needing nursing care in the home. But through lack of instruction and helping hand with difficult procedures their friends or family are unable to care for them. Others need only slight attention and then they could carry on for themselves. Mothers with infants come under this classification. It is this countless number of people and more that the visiting nurse can and does help. She is the one that gives bedside care to those who cannot afford full-time care and teaches the prevention of diseases. We likewise do not realize the many cases of illness that are prevented through the educational program of Well Baby Clinics, Contact Clinics, Immunization Clinics, posters and pamphlets. The field is great, but the public needs educated to the possibilities yet attainable through more support and recognition.
What can unitary sequences tell us about multi-time physics?
Creators: name: White, Gregory A. L.
name: Pollock, Felix A.
name: Hollenberg, Lloyd C. L.
name: Hill, Charles D.
name: Modi, Kavan
Publisher: name: arXiv
Year: 2021
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Multi-time quantum processes are endowed with the same richness as multipartite states, including temporal entanglement and exotic causal structures. However, experimentally probing these rich phenomena leans heavily on fast and clean mid-circuit measurements, which are rarely available. We show here how surprisingly accessible these phenomena are in nascent quantum processors even when faced with substantially limited control. We work within the limitation where only unitary control is allowed, followed by a terminating measurement. Within this setting, we first develop a witness for genuine multi-time entanglement, and then methods to bound (from top and bottom) multi-time entanglement, non-Markovianity, purity, entropy, and other correlative measures. Our tools are designed to be implemented on quantum information processors, which we proceed to demonstrate. Finally, we discuss the limitations of these methods by testing them across random multi-time processes. Conceptually, this broadens our understanding of the extent to which temporal correlations may be determined with only deterministic control. Our techniques are pertinent to generic quantum stochastic dynamical processes, with a scope ranging across condensed matter physics, quantum biology, and in-depth diagnostics of NISQ-era quantum devices.
description: 31 pages, 9 figures + SI
Comparative study between the main clinical characteristics, risk factors and prognosis of conventional oral squamous cell carcinoma and its variant forms
Creators: name: Andrade, Sérgio Araújo
name: Ferreira, Bárbara Cristina Duarte
name: Costa, Isabela Silva
name: Varotti, Fernando De Pilla
name: Lwaleed, Bashir Abdulgader
Publisher: name: F1000 Research Limited
Year: 2020

description: The diagnosis of oral cancer is very complex due to the similarity in signs and symptoms between oral cancer and benign pathologies. This is made even more complicated by the existence of variant forms of oral squamous cell carcinoma. Thus, it is important that clinicians and healthcare professionals are equipped with a simple, fast and reliable framework to aid differential diagnosis between the conventional form of oral squamous cell carcinoma and its variant forms. Moreover, rapid and accurate diagnosis will positively impact treatment outcome and prognosis. 
On the mass transfer rate in SS Cyg
Creators: name: Smak, J.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The mass transfer rate in SS Cyg at quiescence, estimated from the observed luminosity of the hot spot, is log\dotM_tr=16.8+/-0.3. This is safely below the critical mass transfer rates of log\dotM_crit=18.1 (corresponding to logT^o_crit=3.88) or log\dotM_crit=17.2 (corresponding to the "revised value of logT^o_crit=3.65). The mass transfer rate during outbursts is strongly enhanced.
description: 7 pages, 1 figure. submitted to Acta Astronomica
Chemical Inhomogeneities in the Milky Way Stellar Halo
Creators: name: Roederer, Ian U.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have compiled a sample of 699 stars from the recent literature with detailed chemical abundance information (spanning -4.2 < [Fe/H] < +0.3), and we compute their space velocities and Galactic orbital parameters. We identify members of the inner and outer stellar halo populations in our sample based only on their kinematic properties and then compare the abundance ratios of these populations as a function of [Fe/H]. In the metallicity range where the two populations overlap (-2.5 < [Fe/H] < -1.5), the mean [Mg/Fe] of the outer halo is lower than the inner halo by ~0.1 dex. For [Ni/Fe] and [Ba/Fe], the star-to-star abundance scatter of the inner halo is consistently smaller than in the outer halo. The [Na/Fe], [Y/Fe], [Ca/Fe], and [Ti/Fe] ratios of both populations show similar means and levels of scatter. Our inner halo population is chemically homogeneous, suggesting that a significant fraction of the Milky Way stellar halo originated from a well-mixed ISM. In contrast, our outer halo population is chemically diverse, suggesting that another significant fraction of the Milky Way stellar halo formed in remote regions where chemical enrichment was dominated by local supernova events. We find no abundance trends with maximum radial distance from the Galactic center or maximum vertical distance from the Galactic disk. We also find no common kinematic signature for groups of metal-poor stars with peculiar abundance patters, such as the alpha-poor stars or stars showing unique neutron-capture enrichment patterns. Several stars and dSph systems with unique abundance patterns spend the majority of their time in the distant regions of the Milky Way stellar halo, suggesting that the true outer halo of the Galaxy may have little resemblance to the local stellar halo.
description: Accepted for publication in AJ. Full tables available upon request
Axiomatic approach to measures of total correlations
Creators: name: Moraes, Gabriel L.
name: Angelo, Renato M.
name: Costa, Ana C. S.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Correlations play a pivotal role in various fields of science, particularly in quantum mechanics, yet their proper quantification remains a subject of debate. In this work, we aim to discuss the challenge of defining a reliable measure of total correlations. We first outline essential properties that an effective correlation measure should satisfy and review existing measures, including quantum mutual information, the p-norm of the correlation matrix, and the recently defined quantum Pearson correlation coefficient. Additionally, we introduce new measures based on Rényi and Tsallis relative entropies, as well as the Kullback-Leibler divergence. Our analysis reveals that while quantum mutual information, the p-norm, and the Pearson measure exhibit equivalence for two-qubit systems, they all suffer from an ordering problem. Despite criticisms regarding its reliability, we argue that quantum mutual information remains a valid measure of total correlations.
description: 8 pages, 1 figure, 1 table
Spectral Characteristics of Network Redundancy
Creators: name: MacArthur, Ben D.
name: Sánchez-García, Rubén J.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Combinatorics (math.CO)
subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Many real-world complex networks contain a significant amount of structural redundancy, in which multiple vertices play identical topological roles. Such redundancy arises naturally from the simple growth processes which form and shape many real-world systems. Since structurally redundant elements may be permuted without altering network structure, redundancy may be formally investigated by examining network automorphism (symmetry) groups. Here, we use a group-theoretic approach to give a complete description of spectral signatures of redundancy in undirected networks. In particular, we describe how a network's automorphism group may be used to directly associate specific eigenvalues and eigenvectors with specific network motifs.
description: 12 pages, 51 figures, significant improvements
Multi-objective Combinatorial Methodology for Nuclear Reactor Site Assessment: A Case Study for the United States
Creators: name: Erdem, Omer
name: Daley, Kevin
name: Hoelzle, Gabrielle
name: Radaideh, Majdi I.
Publisher: name: arXiv
Year: 2024
Subjects: subject: Computational Engineering, Finance, and Science (cs.CE)
subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: As clean energy demand grows to meet sustainability and net-zero goals, nuclear energy emerges as a reliable option. However, high capital costs remain a challenge for nuclear power plants (NPP), where repurposing coal power plant sites (CPP) with existing infrastructure is one way to reduce these costs. Additionally, Brownfield sites-previously developed or underutilized lands often impacted by industrial activity-present another compelling alternative. This study introduces a novel multi-objective optimization methodology, leveraging combinatorial search to evaluate over 30,000 potential NPP sites in the United States. Our approach addresses gaps in the current practice of assigning pre-determined weights to each site attribute that could lead to bias in the ranking. Each site is assigned a performance-based score, derived from a detailed combinatorial analysis of its site attributes. The methodology generates a comprehensive database comprising site locations (inputs), attributes (outputs), site score (outputs), and the contribution of each attribute to the site score. We then use this database to train a neural network model, enabling rapid predictions of nuclear siting suitability across any location in the United States. Our findings highlight that CPP sites are highly competitive for nuclear development, but some Brownfield sites are able to compete with them. Notably, four CPP sites in Ohio, North Carolina, and New Hampshire, and two Brownfield sites in Florida and California rank among the most promising locations. These results underscore the potential of integrating machine learning and optimization techniques to transform nuclear siting, paving the way for a cost-effective and sustainable energy future.
description: 32 Pages, 7 Tables, 12 Figures
The architecture of the GJ876 planetary system. Masses and orbital coplanarity for planets b and c
Creators: name: Bean, Jacob L.
name: Seifahrt, Andreas
Publisher: name: arXiv
Year: 2009
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: We present a combined analysis of previously published high-precision radial velocities and astrometry for the GJ876 planetary system using a self-consistent model that accounts for the planet-planet interactions. Assuming the three planets so far identified in the system are coplanar, we find that including the astrometry in the analysis does not result in a best-fit inclination significantly different than that found by Rivera and collaborators from analyzing the radial velocities alone. In this unique case, the planet-planet interactions are of such significance that the radial velocity data set is more sensitive to the inclination of the system through the dependence of the interactions on the true masses of the two gas giant planets in the system (planets b and c). The astrometry does allow determination of the absolute orbital inclination (i.e. distinguishing between i and 180-i) and longitude of the ascending node for planet b, which allows us to quantify the mutual inclination angle between its orbit and planet c's orbit when combined with the dynamical considerations. We find that the planets have a mutual inclination of 5.0 +3.9 -2.3 degrees. This result constitutes the first determination of the degree of coplanarity in an exoplanetary system around a normal star. That we find the two planets' orbits are nearly coplanar, like the orbits of the Solar System planets, indicates that the planets likely formed in a circumstellar disk, and that their subsequent dynamical evolution into a 2:1 mean motion resonance only led to excitation of a small mutual inclination. This investigation demonstrates how the degree of coplanarity for other exoplanetary systems could also be established using data obtained from existing facilities.
description: 9 pages, accepted for publication in A&A
Spin dynamics of electrons and holes in InGaAs/GaAs quantum wells at milliKelvin temperatures
Creators: name: Fokina, L. V.
name: Yugova, I. A.
name: Yakovlev, D. R.
name: Glazov, M. M.
name: Akimov, I. A.
name: Greilich, A.
name: Reuter, D.
name: Wieck, A. D.
name: Bayer, M.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: The carrier spin dynamics in a n-doped (In,Ga)As/GaAs quantum well has been studied by time-resolved Faraday rotation and ellipticity techniques in the temperature range down to 430 milliKelvin. These techniques give data with very different spectral dependencies, from which nonetheless consistent information on the spin dynamics can be obtained, in agreement with theoretical predictions. The mechanisms of long-lived spin coherence generation are discussed for the cases of trion and exciton resonant excitation. We demonstrate that carrier localization leads to a saturation of spin relaxation times at 45 ns for electrons below 4.5 K and at 2 ns for holes below 2.3 K. The underlying spin relaxation mechanisms are discussed.
description: 8 pages, 8 figures
Каменные плиты с изображениями эпохи поздней бронзы из курганных комплексов восточной Украины
Creators: name: Полидович Ю.Б.
name: Усачук А.Н.
Publisher: name: Archaeoastronomy and Ancient Technologies
Year: 2013
Subjects: КАМЕННАЯ ПЛИТА
STONE SLAB
ЭПОХА БРОНЗЫ
BRONZE AGE
ПОГРЕБЕНИЕ
BURIAL
КУЛЬТ СОЛНЦА
CULT OF THE SUN
РИТУАЛ
RITUAL

description: Статья посвящена публикации каменных плит с изображениями, найденными в погребениях срубной общности эпохи поздней бронзы на территории Донецкой области (Украина). Погребение из группы Русин Яр представляло собой сложную каменную конструкцию типа ящика (рис. 1). Здесь был погребен взрослый мужчина, принадлежавший к социальному слою носителей производственной функции. Найдены 3 керамических сосуда, бронзовый нож, деревянный поднос с остатками мясной пищи, 2 деревянных предмета (рис. 2, 2; 3, 1-8). На южной плите были нанесено изображение в виде овала, состоящее из черточек, крестов и кружочка. Изображение соотносится с культом Солнца и свидетельствует о высоком общественном ранге погребенного. Второе погребение из группы Попов Яр 2 принадлежало молодому человеку. Погребальный инвентарь состоял из одного сосуда (рис. 3, 1). Плита с изображениями (рис. 4) являлась перекрытием могильной ямы. Изображения были нанесены с обеих сторон плиты, а также на одном торце. Трасологический анализ (рис. 5) показал, что изображения наносились в течение длительного времени, а плита выполняла ритуальную функцию еще до погребального обряда.
description: The article is devoted to the publication of stone slabs with images found in Timber-Grave community burials of late Bronze Age in the Donetsk region (Ukraine). The burial from the group Rusin Yar was a complex stone structure type box (Fig. 1). Here was buried a grown man, who belonged to the social class of carriers of the production function. It was found 3 ceramic vessels, bronze knife, wooden tray with the remains of animal food, 2 wooden objects (Fig. 2, 2; 3, 1-8). On the southern slab were coated with an image in an oval which consisting of dashes, crosses and circle. Image related to the cult of the Sun and indicates the high social rank of the deceased man. The second burial from the group Popov Yar-2 belonged to the young man. The funeral inventory consisted of one vessel (Fig. 3, 1). The slab with images (Fig. 4) was overlap of the burial pit. Images were printed on both sides of the slab, and at one edge. Trasological analysis (Fig. 5) showed that the image is applied for a long time, and the slab performed a ritual function before the funeral ceremony.
Axionic quantum criticality of generalized Weyl semimetals
Creators: name: Malave, Gabriel
name: Soto-Garrido, Rodrigo
name: Juricic, Vladimir
name: Roy, Bitan
Publisher: name: arXiv
Year: 2024
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We formulate a field-theoretic description for $d$-dimensional interacting nodal semimetals, featuring dispersion that scales with the linear and $n$th power of momentum along $d_L$ and $d_M$ mutually orthogonal directions around a few isolated points in the reciprocal space, respectively, with $d_L+d_M=d$, and residing at the brink of isotropic insulation, described by $N_b$-component bosonic order parameter fields. The resulting renormalization group (RG) procedure, tailored to capture the associated quantum critical phenomena, is controlled by a ``small" parameter $ε=2-d_M$ and $1/N_f$, where $N_f$ is the number of identical fermion copies (flavor number) when in conjunction $d_L=1$. When applied to three-dimensional interacting general Weyl semimetals ($d_L=1$ and $d_M=2$), characterized by the Abelian monopole charge $n>1$, living at the shore of the axionic insulation ($N_b=2$), a leading-order RG analysis suggests the Gaussian nature of the underlying quantum phase transition, around which the critical exponents assume mean-field values. A traditional field-theoretic RG analysis yields the same outcomes for simple Weyl semimetals ($n=1$, $d_L=3$, and $d_M=0$). Consequently, emergent marginal Fermi liquids showcase only logarithmic corrections to physical observables at intermediate scales of measurements.
description: Published version in PRB as a Letter: 7 Pages, 1 Figure (Supplemental Material as Ancillary file)
The Smarr formula within the Geroch-Held-Penrose formalism
Creators: name: Guilabert, Alberto
name: Bargueño, Pedro
Publisher: name: arXiv
Year: 2024
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences
subject: 83C57 (Primary) 80A10 (Secondary)

description: The connection between classical thermodynamics and black hole horizons is a fundamental topic in gravitational physics, offering a potential pathway to understanding quantum aspects of gravity. However, while black hole mechanics exhibits well-known thermodynamic parallels, a rigorous geometric interpretation of thermodynamic variables directly from the field equations warrants further research. In this manuscript, we present a thermodynamic formulation of the field equations through the decomposition of the Riemann tensor, employing the Geroch-Held-Penrose (GHP) formalism, to clarify a strong correspondence between black hole thermodynamic variables and geometrical quantities derived from horizon geometry. Our analysis reveals an intrinsic connection between the Penrose and Rindler $K$-curvature and the Smarr relation, motivating a revised definition of both trapping gravity and black hole internal energy. Additionally, we derive through this GHP formalism the Smarr formula for the Reissner-Nördstrom black hole cointained in an AdS spacetime and we explore the implications of this relationship for black holes with exotic topologies and in the context of extended theories, exemplified by $f(R)$ gravity. These findings suggest a deeper geometrical basis for black hole thermodynamics, potentially advancing our understanding of gravitational energy, horizon entropy, and their significance within quantum gravity frameworks.
description: 13 pages
The CMBR ISW and HI 21-cm Cross-correlation Angular Power Spectrum
Creators: name: Sarkar, Tapomoy Guha
name: Datta, Kanan K.
name: Bharadwaj, Somnath
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: The late-time growth of large scale structures (LSS) is imprinted in the CMBR anisotropy through the Integrated Sachs Wolfe (ISW) effect. This is perceived to be a very important observational probe of dark energy. Future observations of redshifted 21-cm radiation from the cosmological neutral hydrogen (HI) distribution hold the potential of probing the LSS over a large redshift range. We have investigated the possibility of detecting the ISW through cross-correlations between the CMBR anisotropies and redshifted 21-cm observations. Assuming that the HI traces the dark matter, we find that the ISW-HI cross-correlation angular power spectrum at an angular multipole l is proportional to the dark matter power spectrum evaluated at the comoving wave number l/r, where r is the comoving distance to the redshift from which the HI signal originated. The amplitude of the cross-correlation signal depends on parameters related to the HI distribution and the growth of cosmological perturbations. However the cross-correlation is extremely weak as compared to the CMBR anisotropies and the predicted HI signal. As a consequence the cross-correlation signal is smaller than the cosmic variance, and a statistically significant detection is not very likely.
description: 13 pages, 4 eps figures, submitted
Computational drug discovery against Severe Acute Respiratory Syndrome Coronavirus(SARS CoV 2) by molecular docking
Creators: name: Sarra Akermi
name: Lohar, Neha
name: Anshul  Nigam
name: Sinha, Subrata
name: Surabhi  Johari
name: Jayant, Sunil
Publisher: name: F1000 Research Limited
Year: 2020

description: Abstract
Background:
Chloroquine and HydroxyChloroquine have been successfully used against the treatment of COVID 19 disease spread by a coronavirus (SARS-CoV-2)(1). However, the use of these drugs is still questionable especially because of their efficacy and side effects. We report the use of an in-silico approach for high throughput screening of FDA approved antiviral drugs and plant compounds having antiviral activities against coronavirus (SARS-CoV-2)[2].

Materials and Methods:
Protein structures
Experimental structures of Receptor binding domains (RBD) of spike proteins from Severe Acute Respiratory Syndrome (SARS CoV-19) are obtained from RCSB data bank with PDB code for spike protein (pdb id: 6VSB (chain A). All water molecules and heteroatoms were removed before submitting to docking simulations.

Compound database
FDA approved antiviral drugs were downloaded from the Drug Bank database (https://www.drugbank.ca/). A total of 88 chemical drugs was obtained from the drug bank database in PDB format. Based on the available literature of natural antiviral compounds, a total of 191 compounds was downloaded from the PubChem database (Wang et al., 2009). Their Smiles strings (Weininger,1990) were obtained from the PubChem database and converted into the 3D structure via the Corina server. All files were saved in the PDB file format (http://www.molecular-networks.com/online_demos/corina_demo).

Molecular docking of compounds with RBD proteins
Molecular Docking of Plant antiviral compounds and FDA approved antiviral drugs are performed by Patchdock and Autodock software. Later, the top hits plant and chemical compounds are subjected to VEGA software to predict toxicity and carcinogenicity.

Results:
Plant compound Tocopheryl-curcumin produces more affinity for spike protein of SARS-CoV-2 as compare to FDA approved drugs. Tocopherylcurcumin binds at the binding site of RBD domain of spike protein (6VSB, chain A) with free energy (∆G) of binding of -11.2 kcal/mol and makes strong hydrogen bonds with amino acid residues of S366, V367, L368, S373, and K529 (Figure 1). Pibrentasvir obtains top rank among FDA approved drugs with free energy (∆G) of binding of -9.6 kcal/mol. Chloroquine (-6.87 kcal/mol) and Hydroxychloroquine (-7.24 kcal/mol) obtain lower rank in our docking study. Toxicity prediction by VEGA tool predicts that tocopherylcurcumin shows no toxicity as compared to FDA approved drugs. Therefore, tocopheryl-curcumin could be used as a potential antiviral (Non toxic) drug against COVID 19 disease as compared to chemical drugs.
PHL 1092 as a transient extreme X-ray weak quasar
Creators: name: Miniutti, G.
name: Fabian, A. C.
name: Brandt, W. N.
name: Gallo, L. C.
name: Boller, Th.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We report a dramatic variability event in the X-ray history of the Narrow-Line quasar PHL 1092 (z=0.396). Our latest 2008 XMM-Newton observation reveals a flux drop of ~200 with respect to the previous observation performed about 4.5 years earlier, and a drop of ~135 with respect to its historical flux. Despite the huge X-ray variation, the UV flux remains constant producing a very significant steepening of the optical to X-ray slope alpha_ox from -1.56 to -2.44, making PHL 1092 one of the most extreme X-ray weak quasars. The similarity in the soft X-ray spectral shape between the present and previous observations, together with the persistent UV flux and the lack of any dramatic change in the optical spectrum suggest that an absorption event is not likely to be the origin of the observed variation. If absorption is ruled out, the sudden X-ray weakness of PHL 1092 must be produced by a transient significant weakening or disruption of the X-ray emitting corona.
description: to appear in MNRAS Letters
Magnetic Braiding and Quasi-Separatrix Layers
Creators: name: Wilmot-Smith, A. L.
name: Hornig, G.
name: Pontin, D. I.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The squashing factor Q (Titov et al. 2002), a property of the magnetic field line mapping, has been suggested as an indicator for the formation of current sheets, and subsequently magnetic reconnection, in astrophysical plasmas. Here we test this hypothesis for a particular class of braided magnetic fields which serve as a model for solar coronal loops. We explore the relationship between Quasi-Separatrix Layers (QSLs), that is, layer-like structures with high Q value, electric currents and integrated parallel currents, the latter being a quantity closely related to the reconnection rate. It is found that as the degree of braiding of the magnetic field is increased the maximum values of Q increase exponentially. At the same time, the distribution of Q becomes increasingly filamentary, with the width of the high-Q layers exponentially decreasing. This is accompanied by an increase in the number of layers so that as the field is increasingly braided the volume becomes occupied by a myriad of thin QSLs. QSLs are not found to be good predictors of current features in this class of braided fields. Indeed, despite the presence of multiple QSLs, the current associated with the field remains smooth and large-scale under ideal relaxation; the field dynamically adjusts to a smooth equilibrium. Regions of high Q are found to be better related to regions of high integrated parallel current than to actual current sheets.
description: 17 pages, 8 figures
Single vortex structure in two models of iron pnictide $s^\pm$ superconductivity
Creators: name: Araujo, M. A. N.
name: Cardoso, M.
name: Sacramento, P. D.
Publisher: name: arXiv
Year: 2009
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The structure of a single vortex in a FeAs superconductor is studied in the framework of two formulations of superconductivity for the recently proposed sign-reversed $s$ wave ($s^\pm$) scenario: {\it (i)} a continuum model taking into account the existence of an electron and a hole band with a repulsive local interaction between the two; {\it (ii)} a lattice tight-binding model with two orbitals per unit cell and a next-nearest-neighbour attractive interaction. In the first model, the local density of states (LDOS) at the vortex centre, as a function of energy, exhibits a peak at the Fermi level, while in the second model such LDOS peak is deviated from the Fermi level and its energy depends on band filling. An impurity located outside the vortex core has little effect on the LDOS peak, but an impurity close to the vortex core can almost suppress it and modify its position.
description: 17 pages, 15 figures. Accepted for publication in New Journal of Physics
Lattice symmetry breaking in cuprate superconductors: Stripes, nematics, and superconductivity
Creators: name: Vojta, Matthias
Publisher: name: arXiv
Year: 2009
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: This article will give an overview on both theoretical and experimental developments concerning states with lattice symmetry breaking in the cuprate high-temperature superconductors. Recent experiments have provided evidence for states with broken rotation as well as translation symmetry, and will be discussed in terms of nematic and stripe physics. Of particular importance here are results obtained using the techniques of neutron and x-ray scattering and scanning tunneling spectroscopy. Ideas on the origin of lattice-symmetry-broken states will be reviewed, and effective models accounting for various experimentally observed phenomena will be summarized. These include both weak-coupling and strong-coupling approaches, with a discussion on their distinctions and connections. The collected experimental data indicate that the tendency toward uni-directional stripe-like ordering is common to underdoped cuprates, but becomes weaker with increasing number of adjacent CuO_2 layers.
description: Review article prepared for Adv. Phys., 66 pg, 22 figs. Comments welcome, (v2) extensions and clarifications, added references, final version to be published
title: Lęk jasnowidzenia. Terminalne olśnienie i kres kultury
Creators: name: Koczanowicz, Leszek
Publisher: name: Instytut Pedagogiki Uniwersytetu Wrocławskiego
Year: 2020

description: W pierwszej części artykułu jego Autor wychodząc od pojęć terminalnego olśnienia i jasnowidzenia, charakteryzuje właściwe nowoczesności wybrane sposoby przepowiadania przyszłości kultury Zachodu. Stanowi to punkt wyjścia do szerokiego omówienia profetycznych książek Oswalda Spenglera oraz Francisa Fukuyamy, pochodzących z dwóch różnych okresów nowoczesności, które to próbowały ustalić przyszłe losy Zachodu: upadek i triumf.
The Clustering and Host Halos of Galaxy Mergers at High Redshift
Creators: name: Wetzel, Andrew R.
name: Cohn, J. D.
name: White, Martin
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: High-resolution simulations of cosmological structure formation indicate that dark matter substructure in dense environments, like groups and clusters, may survive for a long time. These dark matter subhalos are the likely hosts of galaxies. We examine the small-scale spatial clustering of subhalo major mergers at high redshift using high-resolution N-body simulations of cosmological volumes. Recently merged, massive subhalos exhibit enhanced clustering on scales ~100-300 kpc/h, relative to all subhalos of the same infall mass, for a short time after a major merger (< 500 Myr). The small-scale clustering enhancement is smaller for lower mass subhalos, which also show a deficit on scales just beyond the excess. Halos hosting recent subhalo mergers tend to have more subhalos; for massive subhalos the excess is stronger and it tends to increase for the most massive host halos. The subhalo merger fraction is independent of halo mass for the scales we probe. In terms of satellite and central subhalos, the merger increase in small-scale clustering for massive subhalos arises from recently merged massive central subhalos having an enhanced satellite population. Our mergers are defined via their parent infall mass ratios. Subhalos experiencing major mass gains also exhibit a small-scale clustering enhancement, but these correspond to two-body interactions leading to two final subhalos, rather than subhalo coalescence.
description: 10 pages, 5 figures, accepted in MNRAS, version matches published one
Measurement of the top quark mass in final states with two leptons
Creators: name: D0 Collaboration
name: Abazov, V.
Publisher: name: arXiv
Year: 2009
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We present measurements of the top quark mass in ttbar candidate events with two final state leptons using 1 inverse fb of data collected by the D0 experiment. Our data sample is selected by requiring two fully identified leptons or by relaxing one lepton requirement to an isolated track if at least one jet is tagged as a b jet. The top quark mass is extracted after reconstructing the event kinematics under the ttbar hypothesis using two methods. In the first method, we integrate over expected neutrino rapidity distributions, and in the second we calculate a weight for the possible top quark masses based on the observed particle momenta and the known parton distribution functions. We analyze 83 candidate events in data and obtain m_t = 176.2 +/- 4.8 (stat) +/- 2.1 (sys) GeV and m_t = 173.2 +/- 4.9 (stat) +/- 2.0 (sys) GeV for the two methods, respectively. Accounting for correlations between the two methods, we combine the measurements to obtain m_t = 174.7 +/- 4.4 (stat) +/- 2.0 (sys) GeV.
description: 22 pages, 11 figures, subm. to Phys. Rev. D
Modelling structural rearrangements in proteins using Euclidean distance matrices
Creators: name: Aleix Lafita
name: Bateman, Alex
Publisher: name: F1000 Research Limited
Year: 2020

description: Proteins undergo large structural rearrangements such as circular permutations, dimerisation via domain swapping, and loss of core secondary structure elements in domain atrophy, among others. These structural changes can be naturally represented as distance matrix transformations, exploiting their conserved native residue contacts at the protein core. Here we present an homology modelling approach to formulate structural rearrangements as a Euclidean distance matrix (EDM) problem and use it to build their 3D structures. This modelling approach aims to be lightweight, flexible and fast, suitable for large-scale analyses. Models are typically coarse-grained and solely based on protein geometry. We demonstrate various applications of EDM-based modelling for protein structure analysis and release an open repository with the source code at: https://github.com/lafita/protein-edm-demo.