Глубокое тематическое индексирование документов в системе комплектования информационного центра

The paper presents the main technological stages of deep the matic indexing and its benefitsfor the information center acquisitions service. The most common problems of journal thematic attribution as a whole in global citation indexes are considered. It is argued that deep document indexing leads to an unlimited number of document subject headings thus creating serials multiple thematic profiles that represent an increasing number of interdisciplinary studies. The specific examples demonstrate the dynamic links formation between the publication and a certain set of thematic headings, which makes it possible to identify productive publications with different basic profiles for specific subject areas.A comparative study of 2016–2017 chemistry document arrays for VINITI RAS and Scopus journals selections was conducted. The Scopus journals analysis was carried out using the Scimagotools. In the Scopus database, the most representative thematic category is determined as "Chemistry, miscellaneous", which includes both polythematic and highly specialized publications. The maximum flow of Russian editionsarticles is noted in the field of physical chemistry with a significant number of productive journals with a basic physical profile.This model of deep thematic indexing allows the information center acquisitionsservice to monitor the content of various subject areas and ensure the completeness of the resulting documentsetsfor the information products.Представлены основные технологические этапы глубокого тематического индексирования и методы его использования в комплектовании входного документного потока информационно-аналитического центра. Рассмотрены проблемы тематической атрибуции журналов в зарубежных политематических информационно-аналитических ресурсах при индексировании изданий в целом. Показаны преимущества формирования неограниченного числа предметных рубрик при индексировании документов и создании множественных тематических профилей сериальных изданий, свидетельствующих о возрастающем количестве междисциплинарных исследований.Проведено условное сравнение тематического распределения статей 2016–2017 гг. по химическим тематикам в массиве российских журналов, обязательных для отражения в БД ВИНИТИ РАН, и в журнальном массиве БД Scopus. Анализ документных массивов БД Scopus проведён с помощью инструментария аналитического ресурса Scimago. Выявлено существенное несоответствие распределения документных массивов по аналогичным тематикам в обеих БД, что обусловлено разными принципами индексирования. Показано, что документное индексирование позволяет службе комплектования информационно-аналитического центра следить за информационным наполнением различных тематических направлений и обеспечивать полноту результирующих выборок документов при подготовке информационных продуктов

Pb, Sr and Nd Isotope Ratios of Permian-Triassic Flood Basalts in the Basement of the West Siberian Plate

Permian-Triassic flood basalts are widespread across an extremely large area of the Siberian plate in the pre-Jurassic basement of the West Siberian plate. We show that Permian-Triassic flood basalts are similar to the trap basalts of the Siberian Platform with regard to geochemical features and Pb, Sr and Nd isotopic composition. Strontium and neodymium isotope ratios indicate the contribution to the formation of the flood basalts of the EM1 reservoir. We will also show a possible contamination of basalt magma by the Palaeozoic island-arc and orogenic rock complexes

Two-loop Gell-Mann-Low function of N=1 supersymmetric Yang-Mills theory, regularized by higher covariant derivatives

Two-loop Gell-Mann-Low function is calculated for N=1 supersymmetric Yang-Mills theory, regularized by higher covariant derivatives. The integrals, which define it, are shown to be reduced to total derivatives and can be easily calculated analytically.Comment: 17 pages, 3 eps figure

Three point SUSY Ward identities without Ghosts

We utilise a non-local gauge transform which renders the entire action of SUSY QED invariant and respects the SUSY algebra modulo the gauge-fixing condition, to derive two- and three-point ghost-free SUSY Ward identities in SUSY QED. We use the cluster decomposition principle to find the Green's function Ward identities and then takes linear combinations of the latter to derive identities for the proper functions.Comment: 20 pages, no figures, typos correcte

THE METHOD FOR Cu AND Zn ISOTOPE RATIO DETERMINATION BY MC ICP-MS USING THE AG MP-1 RESIN

The isotopic composition of copper is of great interest for researchers in various fields of science, geochemistry and hydrology in particular, wherein the consideration is being given to the variations in the isotopic composition of the Earth’s crust, extraterrestrial matter, and water basins, as well as to the origin and transfer of matter. Zn isotopes appear to be promising for identifying the sources and pathways of the environmental pollution. The aim of this study involves the refinement and validation of the zinc and copper isotopic ratio determination methodology covering the whole process from sample digestion to MC ICP-MS measurements. For this reason, as well as to assess the suitability of the methodology for the analysis of environmental samples, Zn and Cu isotopic analysis of the BHVO-2, BCR-2 and AGV-2 USGS certified reference materials has been performed. The method for determination of Cu and Zn stable isotope ratios by multi-collector inductively coupled plasma mass spectrometry in environmental samples is developed. The application of the AG MP-1 resin with optimized layer parameters (resin bed height 3.5 cm, diameter 1 cm) provides the high-purity Cu and Zn fractions. The method is characterized by high throughput and adequate analytical figures of merit when using the standard-sample bracketing technique for mass bias correction. The procedural blanks related to chemical dissolution and ion exchange procedures are lower than 1 and 3 ng for Cu and Zn, respectively, assuring no blank effect on the isotopic composition of samples. The accuracy and precision obtained for Cu and Zn isotope measurements in the BHVO-2, BCR-2 and AGV-2 geological certified reference materials demonstrate good agreement with the reference values published

МЕТОДИКА ОПРЕДЕЛЕНИЯ ИЗОТОПНЫХ ОТНОШЕНИЙ Cu И Zn МЕТОДОМ МК ИСП-МС С ИСПОЛЬЗОВАНИЕМ СМОЛЫ AG MP-1

The isotopic composition of copper is of great interest for researchers in various fields of science, geochemistry and hydrology in particular, wherein the consideration is being given to the variations in the isotopic composition of the Earth's crust, extraterrestrial matter, and water basins, as well as to the origin and transfer of matter. Zn isotopes appear to be promising for identifying the sources and pathways of the environmental pollution. The aim of this study involves the refinement and validation of the zinc and copper isotopic ratio determination methodology covering the whole process from sample digestion to MC ICP-MS measurements. For this reason, as well as to assess the suitability of the methodology for the analysis of environmental samples, Zn and Cu isotopic analysis of the BHVO-2, BCR-2 and AGV2 USGS certified reference materials has been performed. The method for determination of Cu and Zn stable isotope ratios by multi-collector inductively coupled plasma mass spectrometry in environmental samples is developed. The application of the AG MP1 resin with optimized layer parameters (resin bed height 3.5 cm, diameter 1 cm) provides the highpurity Cu and Zn fractions. The method is characterized by high throughput and adequate analytical figures of merit when using the standardsample bracketing technique for mass bias correction. The procedural blanks related to chemical dissolution and ion exchange procedures are lower than 1 and 3 ng for Cu and Zn, respectively, assuring no blank effect on the isotopic composition of samples. The accuracy and precision obtained for Cu and Zn isotope measurements in the BHVO2, BCR2 and AGV2 geological certified reference materials demonstrate good agreement with the reference values published. © 2022 Institute of the Earth's Crust. All rights reserved.ААААА181180530900458; Ministry of Education and Science of the Russian Federation, Minobrnauka: 075-15-2021-680; Russian Science Foundation, RSF: 18-77-10024The work of Okuneva T.G. is supported by the Russian Science Foundation (project 18-77-10024), the rest authors are supported by the state assignment of the IGG UB RAS ААААА181180530900458. Isotopic analyses are performed at the "Geoanalitik" Shared Research Facilities of the IGG UB RAS. The reequipment and comprehensive development of the "Geoanalitik" Shared Research Facilities of the IGG UB RAS is financially supported by the grant of the Ministry of Science and Higher Education of the Russian Federation (Agreement 075-15-2021-680).authors are supported by the state assignment of the IGG UB RAS ААААА 猃?猃猃稃爃眃甃爃笃爃爃瘃?稁 Isotopic analyses are performed at the 㘀Geoanalitik ? Shared Research Facilities of the IGG UB RAS. The reequipment and comprehensive development of the 㘀Geoanalitik 㘀 Shared Research Facilities of the IGG UB RAS is 퀀inancially supported by the grant of the Ministry of Science and Higher Education of the Russian Federation (Agreement 075-15-2021-680).FUNDING: The work of Okuneva T.G. is supported by the Russian Science Foundation (project 18-77-10024), the res

DETERMINATION OF GOLD IN ORES AND ROCKS BY ETAAS AFTER ITS EXTRACTION BY BRILLIANT GREEN

The aim of this work is to study the possibility of gold microconcentration in organic phase for its subsequent determination by ETAAS. The calibration curves obtained in this work indicate the possibilities of using proposed method for the extraction and concentration of gold from ores and rocks.Работа выполнена в ЦКП «Геоаналитик» в рамках темы № АААА-А18-118053090045-8 государственного задания ИГГ УрО РАН

Measurement of the cross-section and charge asymmetry of WW bosons produced in proton-proton collisions at s=8\sqrt{s}=8 TeV with the ATLAS detector

This paper presents measurements of the $W^+ \rightarrow \mu^+\nu$ and $W^- \rightarrow \mu^-\nu$ cross-sections and the associated charge asymmetry as a function of the absolute pseudorapidity of the decay muon. The data were collected in proton--proton collisions at a centre-of-mass energy of 8 TeV with the ATLAS experiment at the LHC and correspond to a total integrated luminosity of 20.2~\mbox{fb^{-1}}. The precision of the cross-section measurements varies between 0.8% to 1.5% as a function of the pseudorapidity, excluding the 1.9% uncertainty on the integrated luminosity. The charge asymmetry is measured with an uncertainty between 0.002 and 0.003. The results are compared with predictions based on next-to-next-to-leading-order calculations with various parton distribution functions and have the sensitivity to discriminate between them.Comment: 38 pages in total, author list starting page 22, 5 figures, 4 tables, submitted to EPJC. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2017-13

Search for chargino-neutralino production with mass splittings near the electroweak scale in three-lepton final states in √s=13 TeV pp collisions with the ATLAS detector

A search for supersymmetry through the pair production of electroweakinos with mass splittings near the electroweak scale and decaying via on-shell W and Z bosons is presented for a three-lepton final state. The analyzed proton-proton collision data taken at a center-of-mass energy of √s=13  TeV were collected between 2015 and 2018 by the ATLAS experiment at the Large Hadron Collider, corresponding to an integrated luminosity of 139  fb−1. A search, emulating the recursive jigsaw reconstruction technique with easily reproducible laboratory-frame variables, is performed. The two excesses observed in the 2015–2016 data recursive jigsaw analysis in the low-mass three-lepton phase space are reproduced. Results with the full data set are in agreement with the Standard Model expectations. They are interpreted to set exclusion limits at the 95% confidence level on simplified models of chargino-neutralino pair production for masses up to 345 GeV

Search for squarks and gluinos in events with isolated leptons, jets and missing transverse momentum at s√=8 TeV with the ATLAS detector

The results of a search for supersymmetry in final states containing at least one isolated lepton (electron or muon), jets and large missing transverse momentum with the ATLAS detector at the Large Hadron Collider are reported. The search is based on proton-proton collision data at a centre-of-mass energy s√=8 TeV collected in 2012, corresponding to an integrated luminosity of 20 fb−1. No significant excess above the Standard Model expectation is observed. Limits are set on supersymmetric particle masses for various supersymmetric models. Depending on the model, the search excludes gluino masses up to 1.32 TeV and squark masses up to 840 GeV. Limits are also set on the parameters of a minimal universal extra dimension model, excluding a compactification radius of 1/R c = 950 GeV for a cut-off scale times radius (ΛR c) of approximately 30