cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
INGLIZ VA O'ZBEK TILLARIDA EMOTIV BIRLIKLARNING PRAGMATIK TA'SIRI VA ULARNING KOMMUNIKATIV STRATEGIYALARIDAGI ROLI
Creators: name: Rabbimova, Yulduz
Publisher: name: Zenodo
Year: 2024

description: Ushbu tadqiqotda ingliz va o‘zbek tillaridagi emotiv birliklarning kommunikativ va nutqiy strategik vazifalari qiyosiy tahlil qilinadi. Emotiv birliklar insonlar o‘rtasidagi muloqotda hissiy ta’sirni shakllantiruvchi asosiy vosita sifatida qaraladi. Tadqiqotda har ikkala tilning lingvistik xususiyatlari, shuningdek, ularning ijtimoiy-madaniy kontekstlarida emotiv birliklarning o‘rni o‘rganilgan. Natijalar shuni ko‘rsatadiki, emotiv birliklar ingliz tilida keskin va to‘g‘ridan-to‘g‘ri ifodalar orqali qo‘llanilsa, o‘zbek tilida ko‘proq yumshoq va ijtimoiy munosabatlarni tartibga soluvchi vosita sifatida ishlatiladi. Ushbu tadqiqot pragmatik tilshunoslikka oid nazariy bilimlarni boyitishga xizmat qiladi.
Поздние послеродовые кровотечения
Creators: name: Родченкова Александра Андреевна
name: Мельник Полина Сергеевна
name: Арютин Дмитрий Геннадьевич
Publisher: name: Акушерство и гинекология: Новости. Мнения. Обучения
Year: 2019
Subjects: материнская смертность
осложнения послеродового периода
поздние послеродовые кровотечения
эндометрит
гематометра
коагулопатия
эмболизация маточных артерий

description: Цель исследования – разработать алгоритм ведения и улучшить исходы лечения пациенток с кровотечениями в позднем послеродовом периоде Материал и методы. В ходе исследования был выполнен ретрои проспективный анализ исходов лечения 103 пациенток с кровотечением позднего послеродового периода, которым с учетом тяжести состояния и полученных результатов обследования было проведено консервативное или оперативное лечение. Результаты. Проведение комплексной, консервативной, патогенетической терапии с учетом тяжести состояния больной и объема кровопотери, а также с ее адекватным восполнением позволяет в значительном количестве наблюдений избежать хирургического вмешательства. При неэффективности выполнения инструментального опорожнения полости матки повторное внутриматочное вмешательство нецелесообразно и методом выбора должна служить эндоваскулярная окклюзия маточных и/или внутренних подвздошных сосудов, которая не только сочетает в себе высокую эффективность и безопасность, но и снижает риск неблагоприятных исходов кровотечения. Заключение. Несмотря на значительное количество научных исследований, проблема поздних послеродовых осложнений до настоящего времени не только остается не окончательно решенной, но и приобретает все большую актуальность. Перспективным является как разработка современных алгоритмов лечения и использования современных фармакологических и хирургических технологий, так и анализ неблагоприятных исходов лечения.
Iterative Error Decimation for Syndrome-Based Neural Network Decoders
Creators: name: Kamassury, Jorge Kysnney Santos
name: Silva, Danilo
Publisher: name: arXiv
Year: 2020
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: In this letter, we introduce a new syndrome-based decoder where a deep neural network (DNN) estimates the error pattern from the reliability and syndrome of the received vector. The proposed algorithm works by iteratively selecting the most confident positions to be the error bits of the error pattern, updating the vector received when a new position of the error pattern is selected. Simulation results for the (63,45) and (63,36) BCH codes show that the proposed approach outperforms existing neural network decoders. In addition, the new decoder is flexible in that it can be applied on top of any existing syndrome-based DNN decoder without retraining.
description: To appear in Journal of Communication and Information Systems
CROSS-COUNTRY COMPARISON OF EFFICIENCY OF FIRMS IN THE FOOD INDUSTRY
Creators: name: Acheampong, Yvonne J.
name: Wetzstein, Michael E.
name: Acheampong, Yvonne J.
name: Wetzstein, Michael E.
Publisher: name: Unknown
Year: 2001
Subjects: Agribusiness
Industrial Organization
Productivity Analysis

description: Stochastic frontier analysis is used to determine the relative efficiency of firms in the food industry in industrialized countries. Using panel data analysis, the firm-specific factors, firm size, the corporate tax rate and number of years of operation and country-specific effects as potential sources of efficiency are investigated. Relevant implications are discussed.
On the mean Euler characteristic and mean Betti numbers of the Ising model with arbitrary spin
Creators: name: Blanchard, Philippe
name: Dobrovolny, Christophe
name: Gandolfo, Daniel
name: Ruiz, Jean
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: Computational Physics (physics.comp-ph)
subject: FOS: Physical sciences

description: The behaviour of the mean Euler-Poincaré characteristic and mean Betti's numbers in the Ising model with arbitrary spin on $\mathbbm{Z}^2$ as functions of the temperature is investigated through intensive Monte Carlo simulations. We also consider these quantities for each color $a$ in the state space $S\_Q = \{- Q, - Q + 2, ..., Q \}$ of the model. We find that these topological invariants show a sharp transition at the critical point.
description: 12 pages
Plectocolea kurilensis Bakalin et Vilnet, Bryologist
Creators: name: Söderström, Lars
name: Hagborg, Anders
name: Konrat, Matt Von
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Plantae
Marchantiophyta
Jungermanniopsida
Jungermanniales
Solenostomataceae
Plectocolea
Plectocolea kurilensis

description: Plectocolea kurilensis (Bakalin) Bakalin et Vilnet,
Bryologist 115 (4): 577, 2012 (see Bakalin & Vilnet 2012). BASIONYM: Plectocolea flagellata var. kurilensis Bakalin, Arctoa 18: 90, 2009 (see Bakalin et al. 2009).
description: Published as part of Söderström, Lars, Hagborg, Anders & Konrat, Matt Von, 2014, Early Land Plants Today: Index of Liverworts & Hornworts 2011 - 2012, pp. 61-85 in Phytotaxa 170 (2) on page 72, DOI: 10.11646/phytotaxa.170.2.1, http://zenodo.org/record/4779611
Эндоскопическая латеральная фиксация в лечении апикального пролапса: трехлетний опыт
Creators: name: Арютин Дмитрий Геннадьевич
name: Лологаева Милана Султановна
name: Ваганов Евгений Федорович
name: Мельник Полина Сергеевна
name: Духин Армен Олегович
name: Оразов Мекан Рахимбердыевич
Publisher: name: Акушерство и гинекология: Новости. Мнения. Обучения
Year: 2019
Subjects: пролапс тазовых органов
апикальный пролапс
сакровагинопексия
проленовые имплантаты
латеральная фиксация

description: Цель исследования – определить эффективность эндоскопической латеральной фиксации проленовым сетчатым имплантатом в коррекции апикального пролапса. Материал и методы. В ходе проспективного исследования проведен анализ лечения 110 пациенток с апикальным пролапсом, в котором была выполнена лапароскопическая фиксация шейки матки, ее культи или купола влагалища с помощью Т-образного полипропиленового имплантата (оригинальная методика проф. J.B. Dubuisson). Результаты. Длительность операции в среднем составила 85 мин; кровопотеря во время операции в среднем – 100 мл. При наблюдении в сроки до 36 мес у 93 из 110 пациенток отмечен положительный результат лечения, без рецидива и осложнений. Заключение. Лапароскопическая латеральная фиксация при апикальном пролапсе половых органов является эффективной, технически доступной и безопасной альтернативой классической сакровагинопексии, и, что не менее важно, ее выполнение не требует экспертного уровня владения эндоскопической хирургией.
A New Method for Determining $F_π$ on the Lattice
Creators: name: Damgaard, P. H.
name: Heller, Urs M.
name: Splittorff, K.
name: Svetitsky, B.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We derive the two-point spectral correlation function of the Dirac operator with a specific external source in the $ε$-regime of QCD. This correlation function has a unique and strong dependence on $F_π$, and thus provides an novel way to extract $F_π$ from lattice simulations. We test the method in a quenched lattice simulation with staggered fermions.
description: 5 pages, 3 figures
Synergistic Perception and Control Simplex for Verifiable Safe Vertical Landing
Creators: name: Bansal, Ayoosh
name: Zhao, Yang
name: Zhu, James
name: Cheng, Sheng
name: Gu, Yuliang
name: Yoon, Hyung-Jin
name: Kim, Hunmin
name: Hovakimyan, Naira
name: Sha, Lui
Publisher: name: arXiv
Year: 2023
Subjects: subject: Robotics (cs.RO)
subject: Systems and Control (eess.SY)
subject: FOS: Computer and information sciences
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: C.3; C.4; J.7

description: Perception, Planning, and Control form the essential components of autonomy in advanced air mobility. This work advances the holistic integration of these components to enhance the performance and robustness of the complete cyber-physical system. We adapt Perception Simplex, a system for verifiable collision avoidance amidst obstacle detection faults, to the vertical landing maneuver for autonomous air mobility vehicles. We improve upon this system by replacing static assumptions of control capabilities with dynamic confirmation, i.e., real-time confirmation of control limitations of the system, ensuring reliable fulfillment of safety maneuvers and overrides, without dependence on overly pessimistic assumptions. Parameters defining control system capabilities and limitations, e.g., maximum deceleration, are continuously tracked within the system and used to make safety-critical decisions. We apply these techniques to propose a verifiable collision avoidance solution for autonomous aerial mobility vehicles operating in cluttered and potentially unsafe environments.
description: To appear in AIAA SciTech 2024
[Brev til DKNVS]
Creators: name: Heltzen, Christian Ernst
name: Det Kongelige Norske Videnskabers Selskab (DKNVS)
Publisher: name: Unknown
Year: 1813

description: Vedr. ordningen av biblioteket
description: Seks ark heftet sammen. Polydoc nr. 1: 1151. Polydoc nr. 2: 549.
Finite temperature effective action, AdS_5 black holes, and 1/N expansion
Creators: name: Alvarez-Gaume, Luis
name: Gomez, Cesar
name: Liu, Hong
name: Wadia, Spenta
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We propose a phenomenological matrix model to study string theory in AdS_5 \times S_5 in the canonical ensemble. The model reproduces all the known qualitative features of the theory. In particular, it gives a simple effective potential description of Euclidean black hole nucleation and the tunnelling between thermal AdS and the big black hole. It also has some interesting predictions. We find that there exists a critical temperature at which the Euclidean small black hole undergoes a Gross-Witten phase transition. We identify the phase transition with the Horowitz-Polchinski point where the black hole horizon size becomes comparable to the string scale. The appearance of the Hagedorn divergence of thermal AdS is due to the merger of saddle points corresponding to the Euclidean small black hole and thermal AdS. The merger can be described in terms of a cusp (A_3) catastrophe and divergences at the perturbative string level are smoothed out at finite string coupling using standard techniques of catastrophe theory.
description: 41 pages, 3 eps figures, uses harvmac
ESTABLISHING AN AGRIBUSINESS STUDY ABROAD COURSE IN MEXICO: A PROJECT IN INTERNATIONALIZING THE CURRICULUM
Creators: name: Ames, Glenn C.W.
name: Houston, Jack E.
name: Ames, Glenn C.W.
name: Houston, Jack E.
Publisher: name: Unknown
Year: 2001
Subjects: Agribusiness
Teaching/Communication/Extension/Profession

description: Study abroad provides students with a cross-cultural experience and a new perspective on the global market place. Seven students from the University of Georgia enrolled in an initial course entitled , International Agribusiness Marketing and Management: Focus on Mexico, at the University Veracruzana in Xalapa during the Maymester 2000. Their curriculum included field trips to agribusinesses, Spanish classes and lectures on Mexican business culture, and NAFTA. As a result, students became more comfortable in cross-cultural environments and confident in their abilities.
Upper and lower bounds for an eigenvalue associated with a positive eigenvector
Creators: name: Mouchet, Amaury
Publisher: name: arXiv
Year: 2005
Subjects: subject: Spectral Theory (math.SP)
subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: MSC: 47A75 49R50 PACS: 24.10.Cn 03.65.Db 05.30.Jp

description: When an eigenvector of a semi-bounded operator is positive, we show that a remarkably simple argument allows to obtain upper and lower bounds for its associated eigenvalue. This theorem is a substantial generalization of Barta-like inequalities and can be applied to non-necessarily purely quadratic Hamiltonians. An application for a magnetic Hamiltonian is given and the case of a discrete Schrodinger operator is also discussed. It is shown how this approach leads to some explicit bounds on the ground-state energy of a system made of an arbitrary number of attractive Coulombian particles.
VALUING RISK TRADEOFFS AND VOLUNTARY INSECTICIDE REDUCTION
Creators: name: Lohr, Luanne
name: Park, Timothy A.
name: Higley, Leon
name: Lohr, Luanne
name: Park, Timothy A.
name: Higley, Leon
Publisher: name: Unknown
Year: 1996
Subjects: subject: Crop Production/Industries
subject: Environmental Economics and Policy
subject: Resource /Energy Economics and Policy
subject: decision models
subject: agriculture
subject: environmental protection
subject: risk
subject: contingent valuation

description: Farmer's willingness to voluntarily reduce insecticide use is not considered when regulatory approaches to environmental protection are proposed. Regulations that require behavior that would voluntarily be undertaken are excessive and economically inefficient. Using survey data from a contingent valuation scenario, we demonstrate the willingness of crop producers in four Midwestern states in the U.S. to trade yield losses for environmental risk reduction by eliminating an insecticide application. The mean acceptable yield loss for a sample of 1,138 producers in Illinois, Iowa, Nebraska and Ohio is $8.25 per acre. Acceptable yield loss increases with the rated importance of environmental goods (fish, birds, mammals, native plants and endangered species), with formal education and with farming experience. Willingness to pay increase with total expenditure on herbicides and insecticides up to $89 per acre, then decreases as total expenditure continues to rise. We approximate that crop farmers in the four states are willing to give up over $420 million in yield losses, or about 4 percent of total sales of corn and soybeans, to guarantee protection of eleven environmental goods from moderate insecticide risk. Uncertainty about risks, dominance of regulatory approaches and economic pressures undercut voluntary reductions in insecticide use.
Оптимальные сроки родоразрешения при гестационном диабете: проблема, требующая консенсусного решения
Creators: name: Папышева Ольга Виуленовна
name: Есипова Лариса Николаевна
name: Старцева Надежда Михайловна
name: Лукановcкая Ольга Борисовна
name: Савенкова Ирина Викторовна
name: Аракелян Гаянэ Альбертовна
name: Маяцкая Татьяна Александровна
name: Котайш Галина Александровна
Publisher: name: Акушерство и гинекология: Новости. Мнения. Обучения
Year: 2019
Subjects: гестационный сахарный диабет
диабетическая фетопатия
сроки родоразрешения

description: Основной проблемой родоразрешения беременных с гестационным сахарным диабетом (ГСД) является поиск оптимального срока, позволяющего найти равновесие между достаточной зрелостью плода и отсутствием декомпенсации плацентарной недостаточности, диабетической фетопатии (ДФ). Цель исследования – изучение состояния здоровья доношенных новорожденных от матерей с ГСД в зависимости от сроков родоразрешения. Материал и методы. Ретроспективный анализ историй родов 286 беременных с ГСД и карт развития их новорожденных, родоразрешенных в 2017–2019 гг. в родильном отделении ГБУЗ «Городская клиническая больница № 29 им. Н.Э. Баумана» Департамента здравоохранения г. Москвы при доношенном сроке гестации. Результаты. Частота морфофункциональной незрелости у детей от матерей с ГСД на инсулинотерапии, рожденных в 39 нед 1 день – 40,0 нед ниже в 1,5 раза, перинатального поражения центральной нервной системы (ЦНС) – в 3,3 раза, гипогликемии в раннем неонатальном периоде – в 1,4 раза, респираторного дистресс-синдрома – в 16 (!) раз, гипербилирубинемии – в 1,8 раза по сравнению с родившимися в 37,0– 38,0 нед. У новорожденных от матерей на диетотерапии, родившихся в 40,0–41,0 нед с минимальной частотой встречались синдром угнетения ЦНС (в 2,1 раза меньше, чем в 38 нед 1 день – 39,0 нед), гипербилирубинемия (в 2,8 раза реже, чем в 38 нед 1 день – 39,0 нед), гипогликемия не отмечена. Заключение. Для ГСД на инсулинотерапии оптимальным сроком родоразрешения можно считать 39,1– 40,0 нед, на диетотерапии – 40 нед 1 день – 41,0 нед.
Constructing a Human Development Index for Georgia's Counties
Creators: name: Jordan, Jeffrey L.
name: Jordan, Jeffrey L.
Publisher: name: Unknown
Year: 2004
Subjects: Community/Rural/Urban Development
Labor and Human Capital

description: The purpose of this paper is to construct a Human Development Index (HDI) for each of Georgia's 159 counties. The index includes education, employment, and housing variables. Data are from the 2000 Census collected by the State of Georgia Office of Planning and Budget. Patterned after the work done at the United Nations Development Programme, the HDI focuses on variables important for community development activities. The index can be used for a variety of purposes in examining levels of development throughout Georgia.
[Brev til DKNVS]
Creators: name: Peterson, Mathias C.
name: Det Kongelige Norske Videnskabers Selskab (DKNVS)
Publisher: name: Unknown
Year: 1814

description: VS regnskaper
description: 2 brev, det andre dat. 1814-01-25. Polydoc nr. 1: 1152. Polydoc nr. 2: 550.
A simple model for the charm structure function of nuclei
Creators: name: Boroun, G. R.
Publisher: name: arXiv
Year: 2023
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this paper, we have investigated the importance of quark charm in nuclear structure functions in the color dipole model at small $x$. The charm structure function per nucleon $F_{2}^{cA}/A$ for light and heavy nuclei in a wide range of transverse separations $\mathrm{r}$ with renormalization and factorization scales are considered. Bounds on the ratio $F^{cA}_{2}/AF^{A}_{2}$ for nuclei are well described with respect to the electron-ion future colliders kinematic range, i.e, EIC and EIcC colliders.
The role of elliptic integrals in calculating the gravitational lensing of a charged Weyl black hole surrounded by plasma
Creators: name: Fathi, Mohsen
name: Villanueva, J. R.
Publisher: name: arXiv
Year: 2020
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences
subject: 83C57, 33E05

description: In this paper, we mainly aim at highlighting the importance of (hyper-)elliptic integrals in the study of gravitational effects caused by strongly gravitating systems. For this, we study the application of elliptic integrals in calculating the light deflection as it passes a plasmic medium, surrounding a charged Weyl black hole. To proceed with this, we consider two specific algebraic ansatzes for the plasmic refractive index, and we characterize the photon sphere for each of the cases. This will be used further to calculate the angular diameter of the corresponding black hole shadow. We show that the complexity of the refractive index expressions, can result in substantially different types of dependencies of the light behavior on the spacetime parameters.
description: 19 pages, 14 figures
Discovery of a large and faint nebula at the Triangulum galaxy
Creators: name: Roig, Aleix
name: Infante-Sainz, Raúl
name: Ardèvol, Judith
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We report the discovery of a previously uncatalogued arch-shaped filamentary nebula at the outer part of the Triangulum galaxy (M33) centred at R.A. = 1h34m25s, Dec = +30d20m17s (ICRS). This discovery stems from meticulous observations employing deep exposures of M33, using both H-alpha and [OIII] narrow-band filters. The nebula, designated as "Roig1 Prades Sky", exhibits an H-alpha surface brightness of 23.9 mag/arcsec2. Its sky projected location is 21 arcmin away from the M33 galactic centre towards the southeast direction with an extent of 120 by 440 pc. Deep spectroscopic observations are required to unveil its real nature.
description: 4 pages, 1 figure
Изменение липидома эутопического эндометрия женщин с эндометриозом и миомой матки при различных фазах менструального цикла
Creators: name: Салимова Динара Фаильевна
name: Стародубцева Наталья Леонидовна
name: Чаговец Виталий Викторович
name: Токарева Алиса Олеговна
name: Тоноян Нарине Марзпетуновна
name: Павлович Станислав Владиславович
name: Франкевич Владимир Евгеньевич
Publisher: name: Акушерство и гинекология: Новости. Мнения. Обучения
Year: 2020
Subjects: масс-спектрометрия
липидомика
эндометриоз
миома
менструальный цикл
патогенез
эпителий

description: Актуальность. Эндометриоз и миома матки остаются основными причинами бесплодия у женщин репродуктивного возраста. Данные гиперпролиферативные и гормонозависимые гинекологические заболевания часто сопровождаются хронической тазовой болью, снижающей качество жизни женщин. Выяснение основных патогенетических механизмов, а также их влияние на эутопический эндометрий важно для определения этиологии заболевания и разработки методов его диагностики, лечения и прогнозирования рецидива или развития. Цель данной работы – выяснить влияние гиперпролиферативных заболеваний, а также фазы менструального цикла на молекулярный профиль эндометрия путем сравнения липидного состава эутопического эндометрия у 40 женщин с эндометриозом и миомой матки в разных фазах менструального цикла. Материал и методы. Полуколичественную оценку липидов в экстрактах тканей проводили с использованием высокоэффективной жидкостной хроматографии с масс-спектрометрией (ВЭЖХ-МС). В результате анализа было идентифицировано 247 липидов, относящихся к 6 классам: фосфатидилхолины, фосфатидилэтаноламины, сфингомиелины, триглицериды, плазмалогены и эфиры холестерина. Данные были проанализированы с помощью дискриминантного анализа методом OPLS-DA. Статистические модели OPLS-DA для миомы (R2=63% и Q2=47%) и эндометриоза (R2=80% и Q2=75%) выявили отличия липидных профилей эутопического эндометрия в пролиферативной и секреторной фазах менструального цикла. Результаты. При эндометриозе обнаружено значимое отличие уровней 16 липидов между пролиферативной и секреторной фазами менструального цикла, а при миоме матки – 13 липидов. Эти липиды непосредственно участвуют в общих процессах исследуемых гиперпролиферативных нарушений, включая пролиферацию клеток, ангиогенез, изменения в иммунном ответе. Заключение. Полученная информация расширяет знания о влиянии эндометриоза и миомы на организм человека на молекулярном уровне, а также свидетельствует о необходимости учета фазы менструального цикла в подобных исследованиях.
Plectocolea ovalifolia Bakalin et Vilnet, Bryologist
Creators: name: Söderström, Lars
name: Hagborg, Anders
name: Konrat, Matt Von
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Plantae
Marchantiophyta
Jungermanniopsida
Jungermanniales
Solenostomataceae
Plectocolea
Plectocolea ovalifolia

description: Plectocolea ovalifolia (Amakawa) Bakalin et Vilnet,
Bryologist 115 (4): 579, 2012 (see Bakalin & Vilnet 2012). BASIONYM: Plectocolea infusca var. ovalifolia Amakawa, J. Jap. Bot. 34 (4): 115, 1959 (see Amakawa 1959).
description: Published as part of Söderström, Lars, Hagborg, Anders & Konrat, Matt Von, 2014, Early Land Plants Today: Index of Liverworts & Hornworts 2011 - 2012, pp. 61-85 in Phytotaxa 170 (2) on page 72, DOI: 10.11646/phytotaxa.170.2.1, http://zenodo.org/record/4779611
A further 'degree of freedom' in the rotational evolution of stars
Creators: name: Holzwarth, V.
name: Jardine, M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Observational and theoretical investigations provide evidence for non-uniform spot and magnetic flux distributions on rapidly rotating stars, which have a significant impact on their angular momentum loss rate through magnetised winds. Supplementing the formalism of MacGregor & Brenner (1991) with a latitude-dependent magnetised wind model, we analyse the effect of analytically prescribed surface distributions of open magnetic flux with different shapes and degrees of non-uniformity on the rotational evolution of a solar-like star. The angular momentum redistribution inside the star is treated in a qualitative way, assuming an angular momentum transfer between the rigidly-rotating radiative and convective zones on a constant coupling timescale of 15 Myr; for the sake of simplicity we disregard interactions with circumstellar disks. We find that non-uniform flux distributions entail rotational histories which differ significantly from those of classical approaches, with differences cumulating up to 200% during the main sequence phase. Their impact is able to mimic deviations of the dynamo efficiency from linearity of up to 40% and nominal dynamo saturation limits at about 35 times the solar rotation rate. Concentrations of open magnetic flux at high latitudes thus assist in the formation of very rapidly rotating stars in young open clusters, and ease the necessity for a dynamo saturation at small rotation rates. However, since our results show that even minor amounts of open flux at intermediate latitudes, as observed with Zeeman-Doppler imaging techniques, are sufficient to moderate this reduction of the AM loss rate, we suggest that non-uniform flux distributions are a complementary rather than an alternative explanation for very rapid stellar rotation.
description: 12 pages, 13 figures, accepted for publication by A&A
Этиологическая структура острых респираторных заболеваний в отдельном родовспомогательном учреждении III уровня
Creators: name: Чубаров Валерий Викторович
name: Гончарук Ольга Дмитриевна
name: Гордеев Алексей Борисович
name: Исаева Елена Леонидовна
name: Сердюкова Дарья Михайловна
name: Скоробогатый Алексей Викторович
name: Кривоносов Никита Вячеславович
name: Донников Андрей Евгеньевич
Publisher: name: Акушерство и гинекология: Новости. Мнения. Обучения
Year: 2020
Subjects: грипп
острое респираторное заболевание
родовспоможение
полимеразная цепная реакция
культуральный метод
беременные

description: Актуальность. Беременные относятся к группе наибольшего риска развития осложнений при гриппе и других острых респираторных заболеваниях (ОРЗ). В период беременности женщины крайне уязвимы и восприимчивы к респираторным вирусным инфекциям, гриппу и бактериальным осложнениям. Цель исследования – провести анализ этиологической структуры ОРЗ и гриппа у пациентов и сотрудников ФГБУ «НМИЦ АГП им. академика В.И. Кулакова» Минздрава России с помощью культурального метода и ПЦР-диагностики. Материал и методы. Проведен первичный скрининг пациентов и сотрудников центра, выполнены стандартные и специальные методы лабораторного обследования. Специальные методы включали ПЦРдиагностику и культуральное исследование отделяемого слизистой носа и зева. При культуральном исследовании проводили посев биоматериала на селективные и неселективные питательные среды. Видовую идентификацию осуществляли с помощью матрично-активированной лазерной десорбционной/ионизационной времяпролетной масс-спектрометрии (MALDI-TOF-MS). Для проведения полимеразной цепной реакции (ПЦР) использовали диагностические тест-системы «ОРЗ ВирусКомплекс» и «ГриппКомплекс» («ДНК-Технология», Россия). Результаты. Культуральным методом исследовано 316 образцов биологического материала, полученного от 89 пациентов, выделено 65 штаммов условно-патогенных микроорганизмов (УПМ), относящихся к 7 видам: Haemophilus influenzae, Streptococcus pneumoniae, Streptococcus pyogenes, Moraxella catarrhalis, Staphylococcus aureus, Klebsiella pneumoniae и Pseudomonas aeruginosa. Методом ПЦР у 12 пациентов выявлен риновирус, вирус гриппа В обнаружен у 5 пациентов, коронавирус Е229 также обнаружен у 5 пациентов, вирус гриппа А – у 4 пациентов, реже выявлялись респираторно-синцитиальный вирус, аденовирус и метапневмовирус (по 2 пациента), вирусы парагриппа 1-го и 3-го типа (по 1 пациенту). Вирусы парагриппа 2-го и 4-го типа, а также эпидемически значимые коронавирусы ОС43, HKU1, NL63 не выявлены. Заключение. Среди обследованных взрослых пациентов с признаками ОРЗ колонизация слизистых оболочек бактериальными УПМ встречается реже, чем вирусными. Основными видами УПМ, встречающимися при ОРЗ, были Haemophilus influenzae, Streptococcus pneumoniae, Streptococcus pyogenes, Moraxella catarrhalis, Staphylococcus aureus, Klebsiella pneumoniae, Pseudomonas aeruginosa. Среди вирусных патогенов в нашем исследовании риновирусы были наиболее частой причиной возникновения ОРЗ. Грипп А и В обнаружен в равных долях. Исследования по изучению структуры ОРЗ и гриппа среди пациентов родовспомогательных учреждений необходимо продолжить.
RECONCILING ATTITUDES AND BEHAVIOR IN ORGANIC FOOD RETAILING
Creators: name: Lohr, Luanne
name: Semali, Adelin
name: Lohr, Luanne
name: Semali, Adelin
Publisher: name: Unknown
Year: 2000
Subjects: subject: Agribusiness
subject: Marketing
subject: FOS: Economics and business

description: For organic food to reach the average consumer will require greater penetration into conventional supermarkets. Product placement can be expanded into more stores by altering attitudes that lower the probability of selling organic foods. This study identified significant factors in the retail decision to sell organic foods and quantifies the effects of retailer attitudes on behavior. We used a probit model to quantify the effect of customer demographics, store characteristics, manager characteristics, and profitability of organic retailing on the decision to sell organic foods. The model was based on interview data collected in Atlanta, Georgia from 66 retailers who sell organic foods and 21 who do not. Our research indicates that organic education programs can be a cost- effective way to expand market penetration without requiring changes in price or cost premiums. If properly composed and targeted, such programs can alter underlying attitudes and increase the probability of selling organic foods.
Observations of IC348: The Disk Population at 2-3 Million Years
Creators: name: Lada, C. J.
name: Muench, A. A.
name: Luhman, K. L.
name: Allen, L.
name: Hartmann, L.
name: Megeath, T.
name: Myers, P.
name: Fazio, G.
name: Wood, K.
name: Muzerolle, J.
name: Rieke, G.
name: Siegler, N.
name: Young, E.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present near and mid-infrared photometry obtained with the Spitzer Space Telescope of 300 known members of the IC348 cluster. We merge this photometry with existing ground-based optical and near-infrared photometry in order to construct optical-infrared spectral energy distributions (SEDs) for all the cluster members and present a complete atlas of these SEDs. We employ these observations to both investigate the frequency and nature of the circumstellar disk population in the cluster. The observations are sufficiently sensitive to enable the first detailed measurement of the disk frequency for very low mass stars at the peak of the stellar IMF. Using measurements of infrared excess between 3.6 and 8 microns we find the total frequency of disk-bearing stars in the cluster to be 50 +/- 6%. However, only 30 +/- 4% of the member stars are surrounded by optically thick, primordial disks, while the remaining disk-bearing stars are surrounded by what appear to be optically thin,anemic disks. The disk fraction appears to be a function of spectral type and stellar mass. The disk longevity and thus conditions for planet formation appear to be most favorable for stars which are of comparable mass to the sun. The optically thick disks around later type (> M4) stars appear to be less flared than the disks around earlier type stars. This may indicate a greater degree of dust settling and a more advanced evolutionary state for the late M disk population. Finally we find that the presence of an optically thick dust disk is correlated with gaseous accretion as measured by the strength of Halpha emission. These results suggest that it is more likely for dust disks to persist in the absence of active gaseous accretion than for active accretion to persist in the absence of dusty disks.
description: To be published in the March 2006 issue of the Astronomical Journal. Paper consists of 40 pages with 10 figures. Complete set of 47 figures and 2 full electronic tables can be found at http://www.cfa.harvard.edu/~clada/pubs_html/ic348_spitzer.html
Impact of Array Configuration on Head-Mounted Display Performance at mmWave Bands
Creators: name: Marinšek, Alexander
name: Cai, Xuesong
name: De Strycker, Lieven
name: Tufvesson, Fredrik
name: Van der Perre, Liesbet
Publisher: name: arXiv
Year: 2023
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: Immersing a user in life-like extended reality (XR) scenery using a head-mounted display (HMD) with a constrained form factor and hardware complexity requires remote rendering on a nearby edge server or computer. Millimeter-wave (mmWave) communication technology can provide sufficient data rate for wireless XR content transmission. However, mmWave channels exhibit severe sparsity in the angular domain. This means that distributed antenna arrays are required to cover a larger angular area and to combat outage during HMD rotation. At the same time, one would prefer fewer antenna elements/arrays for a lower complexity system. Therefore, it is important to evaluate the trade-off between the number of antenna arrays and the achievable performance to find a proper practical solution. This work presents indoor 28 GHz mmWave channel measurement data, collected during HMD mobility, and studies the dominant eigenmode (DE) gain. DE gain is a significant factor in understanding system performance since mmWave channel sparsity and eigenmode imbalance often results in provisioning the majority of the available power to the DE. Moreover, it provides the upper performance bounds for widely-adopted analog beamformers. We propose 3 performance metrics - gain trade-off, gain volatility, and minimum service trade-off - for evaluating the performance of a multi-array HMD and apply the metrics to indoor 28 GHz channel measurement data. Evaluation results indicate, that 3 arrays provide stable temporal channel gain. Adding a 4th array further increases channel capacity, while any additional arrays do not significantly increase physical layer performance.
Collapsar R-Process Yields Can Reproduce [Eu/Fe] Abundance Scatter in Metal-Poor Stars
Creators: name: Brauer, Kaley
name: Ji, Alexander P.
name: Drout, Maria R.
name: Frebel, Anna
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: It is unclear if neutron star mergers can explain the observed r-process abundances of metal-poor stars. Collapsars, defined here as rotating massive stars whose collapse results in a rapidly accreting disk around a black hole that can launch jets, are a promising alternative. We find that we can produce a self-consistent model in which a population of collapsars with stochastic europium yields synthesizes all of the r-process material in metal-poor ([Fe/H] < -2.5) stars. Our model reproduces the observed scatter and evolution of scatter of [Eu/Fe] abundances. We find that if collapsars are the dominant r-process site for metal-poor stars, r-process synthesis may be linked to supernovae that produce long gamma-ray bursts. Our results also allow for the possibility that core-collapse supernovae beyond those that launch gamma-ray bursts also produce r-process material (e.g., potentially a subset of Type Ic-BL supernovae). Furthermore, we identify collapsar jet properties (isotropic energy, engine luminosity, or engine time) which may trace r-process yield and verify that the amount of r-process yield produced per collapsar in our model (~0.07 Msun) is consistent with other independent estimates. In the future, achieving 0.05 dex precision on distribution scatter or a reliable selection function would further constrain our probe of r-process production. Our model would also hold for another prompt r-process site with a power-law yield, and work is needed to determine if, for example, fast-merging neutron stars can also explain abundance scatter.
description: 17 pages, 8 figures. Accepted by ApJ
Применение MALDI-TOF масс-спектрометрии для изучения микробиоты кишечника новорожденных
Creators: name: Припутневич Татьяна Валерьевна
name: Николаева Анастасия Владимировна
name: Гордеев Алексей Борисович
name: Исаева Елена Леонидовна
name: Муравьева Вера Васильевна
name: Любасовская Людмила Анатольевна
name: Шубина Екатерина
name: рофимов Дмитрий Юрьевич
name: Мелкумян Алина Рантиковна
name: Зубков Виктор Васильевич
Publisher: name: Акушерство и гинекология: Новости. Мнения. Обучения
Year: 2020
Subjects: MALDI-TOF-MS
секвенирование гена 16S рРНК
культуромика
микробиота
микробиота кишечника
новорожденные

description: Цель настоящего исследования – сравнительный анализ эффективности видовой идентификации микроорганизмов при исследованиях микробиоты кишечника новорожденных с помощью двух различных методов: времяпролетной масс-спектрометрии (MALDI-TOF-MS) и секвенирования участков гена 16S рРНК. Материал и методы. Исследования микробиоты кишечника проводили на группе новорожденных из различных отделений ФГБУ «НМИЦ АГП им. В.И. Кулакова» Минздрава России в 2019 г. Состав микробиоты кишечника новорожденных изучали c использованием расширенного спектра селективных и неселективных питательных сред и инкубированием в аэробных, микроаэрофильных и анаэробных условиях. Для исследования брали все выделенные в ходе работы чистые культуры микроорганизмов. Микроорганизмы идентифицировали с помощью двух различных методов: MALDI-TOF-MS и секвенирования участков гена 16S рРНК. Результаты. Для исследования отобрано 84 чистые культуры микроорганизмов, выделенных из фекалий новорожденных. Для каждого выделенного изолята проведено MALDI-TOF-MS исследование. Для большей части изолятов (82%) получены значения показателя SCORE в диапазоне от 1,68 до 2,40, что дало возможность отнести каждый изолят к тому или иному предполагаемому виду. Для 15 (18%) изолятов микроорганизмов видовую идентификацию корректно провести не удалось. Результаты видовой идентификации исследуемых изолятов микроорганизмов, полученные обоими методами, полностью совпали для 58 из 69 изолятов (84%). В ряде случаев определение вида микроорганизмов с помощью MALDI-TOF-MS прошло некорректно. Применение секвенирования видоспецифических участков гена 16S рРНК позволило получить правильный результат. Заключение. Результаты, полученные путем секвенирования видоспецифических участков гена 16S рРНК, хорошо коррелируют с результатами, полученными с помощью времяпролетного MALDI-TOF массспектрометра. Показано, что MALDI-TOF-MS можно эффективно использовать при проведении исследований по изучению состава микробиоты кишечника новорожденных.
FACTORS AFFECTING INTERNATIONAL DEMAND AND TRADE IN ORGANIC FOOD PRODUCTS
Creators: name: Lohr, Luanne
name: Lohr, Luanne
Publisher: name: Unknown
Year: 2001
Subjects: International Relations/Trade

description: This paper describes important markets for organic foods in Europe, Japan, and North America. The effects on demand of price premiums, distribution channels, consumer characteristics, and key consumer issues (price-quality trade off, country of origin, GMO content, and social process) are discussed.
Wall shear stress distribution in a compliant airway tree
Creators: name: Stéphano, Jonathan
name: Mauroy, Benjamin
Publisher: name: arXiv
Year: 2020
Subjects: subject: Biological Physics (physics.bio-ph)
subject: Computational Physics (physics.comp-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: Tissues and Organs (q-bio.TO)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: The airflow in the bronchi applies a shear stress on the bronchial mucus, which can move the mucus. The air--mucus interaction plays an important role in cough and in chest physiotherapy (CP). The conditions under which it induces a displacement of the mucus are still unclear. Yet, the air--mucus interaction justifies common technics of CP used to help the draining of the mucus in prevalent diseases. Hence, the determination of the distribution of the shear stress in the lung is crucial for understanding the effects of these therapies and, potentially, improve their efficiency. We develop a mathematical model to study the distribution of the wall shear stress (WSS) induced by an air flow exiting an airway tree. This model accounts for the main physical processes that determines the WSS, more particularly the compliance of the airways, the air inertia and the tree structure. We show that the WSS distribution in the tree depends on the dynamics of the airways deformation and on the air inertia. The WSS distribution in the tree exhibits a maximum whose amplitude and location depend on the amount of air flow and on the "tissue" pressure surrounding the airways. To characterize the behavior of the WSS at the tree bifurcations, we derive new analytical criteria related to the airway size reduction in the bifurcations. Our results suggest that a tuning of the airflow and of the tissue pressure during a CP maneuver might allow to control, at least partially, the air--mucus interaction in the lung.
Classical dynamics and stability of collapsing thick shells of matter
Creators: name: Alberghi, G. L.
name: Casadio, R.
name: Fazi, D.
Publisher: name: arXiv
Year: 2006
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We study the collapse towards the gravitational radius of a macroscopic spherical thick shell surrounding an inner massive core. This overall electrically neutral macroshell is composed by many nested delta-like massive microshells which can bear non-zero electric charge, and a possibly non-zero cosmological constant is also included. The dynamics of the shells is described by means of Israel's (Lanczos) junction conditions for singular hypersurfaces and, adopting a Hartree (mean field) approach, an effective Hamiltonian for the motion of each microshell is derived which allows to check the stability of the matter composing the macroshell. We end by briefly commenting on the quantum effects which may arise from the extension of our classical treatment to the semiclassical level.
description: 16 pages in IOP style, 8 figures, accepted for publication in Class. Quantum Grav
Pleurocladula affinis Konstant., Vilnet et A. V. Troitsky
Creators: name: Söderström, Lars
name: Hagborg, Anders
name: Konrat, Matt Von
Publisher: name: Zenodo
Year: 2014
Subjects: Biodiversity
Taxonomy
Plantae
Bryophyta
Jungermanniopsida
Jungermanniales
Cephaloziaceae
Pleurocladula
Pleurocladula affinis

description: Pleurocladula affinis (Lindb. ex Steph.) Konstant., Vilnet et A.V.Troitsky,
Arctoa 21: 125, 2012 (see Vilnet et al. 2012). BASIONYM: Cephalozia affinis Lindb. ex Steph., Bull. Herb. Boissier (sér. 2) 8 (4): 277 (291), 1908 (see Stephani 1908b).
description: Published as part of Söderström, Lars, Hagborg, Anders & Konrat, Matt Von, 2014, Early Land Plants Today: Index of Liverworts & Hornworts 2011 - 2012, pp. 61-85 in Phytotaxa 170 (2) on page 72, DOI: 10.11646/phytotaxa.170.2.1, http://zenodo.org/record/4779611
The Effect of Air on Granular Size Separation in a Vibrated Granular Bed
Creators: name: Möbius, Matthias E.
name: Cheng, Xiang
name: Eshuis, Peter
name: Karczmar, Greg S.
name: Nagel, Sidney R.
name: Jaeger, Heinrich M.
Publisher: name: arXiv
Year: 2005
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Using high-speed video and magnetic resonance imaging (MRI) we study the motion of a large sphere in a vertically vibrated bed of smaller grains. As previously reported we find a non-monotonic density dependence of the rise and sink time of the large sphere. We find that this density dependence is solely due to air drag. We investigate in detail how the motion of the intruder sphere is influenced by size of the background particles, initial vertical position in the bed, ambient pressure and convection. We explain our results in the framework of a simple model and find quantitative agreement in key aspects with numerical simulations to the model equations.
description: 14 pages, 16 figures, submitted to PRE, corrected typos, slight changes
Морфологические и иммунногистохимические особенности полипов эндометрия в разновозрастных группах
Creators: name: Багдасарян Лиана Юрьевна
name: Пономарев Владислав Викторович
name: Дряева Людмила Геннадьевна
name: Карахалис Людмила Юрьевна
Publisher: name: Акушерство и гинекология: Новости. Мнения. Обучения
Year: 2020
Subjects: полип эндометрия
инфекция
гормональные нарушения

description: Важным фактором в развитии полипов эндометрия является ряд механизмов: наличие абсолютной или относительной гиперэстрогении и не до конца определенная роль инфекции, а также их влияние друг на друга. Поиск патогенетически обусловленных подходов, направленных на профилактику рецидивирования полипов эндометрия, является актуальной задачей.
Strain, Anharmonicity and Finite-Size Effects on the Vibrational Properties of Linear Carbon Chains
Creators: name: Candiotto, Graziâni
name: Silva, Fernanda R.
name: Costa, Deyse G.
name: Capaz, Rodrigo B.
Publisher: name: arXiv
Year: 2023
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Linear carbon chains (LCCs) are the ultimate 1D molecular system and they show unique mechanical, optical and electronic properties that can be tuned by altering the number of carbon atoms, strain, encapsulation, and other external parameters. In this work, we probe the effects of quantum anharmonicity, strain and finite size on the structural and vibrational properties of these chains, using high$-$level density functional theory (DFT) calculations. We find strong anharmonicity effects for infinite chains, leading to ground$-$state nuclear wavefunctions that are barely localized at each of the dimerized geometries, i.e. strong tunneling occurs between the two minima of the potential energy surface. This effect is enhanced for compressive strains. In addition, vibrational C$-$band frequencies deviate substantially from experimental measurements in long chains encapsulated in carbon nanotubes. On the other hand, calculations for finite chains suggest that quantum anharmonicity effects are strongly suppressed in finite system, even in the extrapolation to the infinite case. For finite systems, vibrational C$-$band frequencies agree well with experimental values at zero pressure. However, these frequencies increase under compressive strain, in contradiction with recent results. This contradiction is not resolved by adding explicitly the encapsulating carbon nanotubes to our calculations. Our results indicate that LCCs embody an intriguing 1D system in which the behavior of very large finite systems do not reproduce or converge to the behavior of truly infinite ones.
description: 8 pages, 7 figures