cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Opening of a pseudogap in a quasi-two dimensional superconductor due to critical thermal fluctuations
Creators: name: Ohkawa, Fusayoshi J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We examine the role of the anisotropy of superconducting critical thermal fluctuations in the opening of a pseudogap in a quasi-two dimensional superconductor such as a cuprate-oxide high-temperature superconductor. When the anisotropy between planes and their perpendicular axis is large enough and its superconducting critical temperature T_c is high enough, the fluctuations are much developed in its critical region so that lifetime widths of quasiparticles are large and the energy dependence of the selfenergy deviates from that of Landau's normal Fermi liquids. A pseudogap opens in such a critical region because quasiparticle spectra around the chemical potential are swept away due to the large lifetime widths. The pseudogap never smoothly evolves into a superconducting gap; it starts to open at a temperature higher than T_c while the superconducting gap starts to open just at T_c. When T_c is rather low but the ratio of varepsilon_G(0)/k_BT_c, with varepsilon_G(0) the superconducting gap at T=0K and k_B the Boltzmann constant, is much larger than a value about 4 according to the mean-field theory, the pseudogap must be closing as temperature T approaches to the low T_c because thermal fluctuations become less developed as T decreases. Critical thermal fluctuations cannot cause the opening of a prominent pseudogap in an almost isotropic three dimensional superconductor, even if its T_c is high.
description: 25 pages, 5 figures (14 subfigures)
ПОТРЕБИТЕЛЬСКИЕ ПРЕДПОЧТЕНИЯ НАСЕЛЕНИЯ КАК ИСХОДНАЯ ИНФОРМАЦИЯ ПРИ ПОВЫШЕНИИ ПИЩЕВОЙ ЦЕННОСТИ КОНДИТЕРСКИХ ИЗДЕЛИЙ
Creators: name: ШКОЛЬНИКОВА МАРИНА НИКОЛАЕВНА
name: ЧУГУНОВА ОЛЬГА ВИКТОРОВНА
name: ЛАЗАРЕВ ВЛАДИМИР АЛЕКСАНДРОВИЧ
name: КАРХ ДМИТРИЙ АНДРЕЕВИЧ
Publisher: name: Пищевая промышленность
Year: 2019
Subjects: ИННОВАЦИОННЫЕ РАЗРАБОТКИ
КОНДИТЕРСКИЕ ИЗДЕЛИЯ
ПОТРЕБИТЕЛЬСКИЕ ПРЕДПОЧТЕНИЯ
ФУНКЦИОНАЛЬНЫЕ ИНГРЕДИЕНТЫ

description: В условиях реализации политики импортозамещения особую значимость представляет инновационная деятельность предприятий пищевой промышленности, специфика которых заключается в том, что основной объем вырабатываемой продукции рассчитан на внутреннее потребление и ограничен спросом, определяемым рациональными нормами потребления продуктов питания. В связи с этим предприятия отрасли должны планировать выпуск достаточного объема различных видов продукции для обеспечения физической доступности всех социальных слоев общества к пищевым продуктам. Это требует постоянной работы по совершенствованию рецептур, технологических приемов производства продукции, способов ее упаковывания и доставки до потребителя с сохранением в процессе товародвижения всех потребительских достоинств, в том числе свежести. Безусловно, решение о целесообразности внесения в продукты пищевых добавок, в том числе функционального назначения, должны принимать специалисты предприятия-изготовителя. Однако изучение потребительских предпочтений и осведомленности позволяет производителям скорректировать основополагающие потребительские свойства продуктов питания - функциональные, органолептические и сохраняемость. При этом сохраняемость потребитель воспринимает как срок годности продукта, предпочитая наиболее свежие. В связи с этим для получения и анализа результатов, приведенных в работе, поставлена цель исследования: изучить информированность потребителей о влиянии сроков годности пастильных изделий на их органолептические свойства и потенциальный спрос на зефир, в составе которого функциональный пищевой ингредиент и структурообразователь, обладающий влагоудерживающей способностью, пектин из местного плодово-ягодного сырья.
Observation of spontaneous valley polarization of itinerant electrons
Creators: name: Hossain, Md. S.
name: Ma, M. K.
name: Rosales, K. A. Villegas
name: Chung, Y. J.
name: Pfeiffer, L. N.
name: West, K. W.
name: Baldwin, K. W.
name: Shayegan, M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Memory or transistor devices based on electron's spin rather than its charge degree of freedom offer certain distinct advantages and comprise a cornerstone of spintronics. Recent years have witnessed the emergence of a new field, valleytronics, which seeks to exploit electron's valley index rather than its spin. An important component in this quest would be the ability to control the valley index in a convenient fashion. Here we show that the valley polarization can be switched from zero to one by a small reduction in density, simply tuned by a gate bias, in a two-dimensional electron system. This phenomenon arises fundamentally as a result of electron-electron interaction in an itinerant, dilute electron system. Essentially, the kinetic energy favors an equal distribution of electrons over the available valleys, whereas the interaction between electrons prefers single-valley occupancy below a critical density. The gate-bias-tuned transition we observe is accompanied by a sudden, two-fold change in sample resistance, making the phenomenon of interest for potential valleytronic transistor device applications. Our observation constitutes a quintessential demonstration of valleytronics in a very simple experiment.
10 Gb/s Polarization-Insensitive OOK-to-BPSK Modulation Format Conversion Using a Single SOA, and Its Performance in OOK/DBPSK Mixed-Modulation Format, Long-Haul DWDM Transmission
Creators: name: Astar, William
Publisher: name: Maryland Shared Open Access Repository
Year: 2008
Subjects: Engineering, Electronics and Electrical (0544)
Physics, Optics (0752)

description: Polarization-insensitive modulation format conversion of 10 Gb/s return-to-zero (RZ) On-Off keying to binary phase-shift keying (BPSK) is achieved for the first time by transient cross-phase modulation (XPM) using a single semiconductor optical amplifier (SOA), and a detuned filter. The RZ pulse format is regenerated using a synchronous pulse carver located between the SOA and the detuned filter. Copropagation of return-to-zero differential binary phase-shift keying (RZ-DBPSK) with RZ-OOK in dense wavelength division multiplexed (DWDM) transmission has been found to be detrimental to RZ-DBPSK due to XPM-mediated power-phase conversion induced by pattern-dependent RZ-OOK. A method is proposed to alleviate this degradation, in which the impairing RZ-OOK channel is converted to RZ-BPSK in a SOA prior to 50-GHz-spaced DWDM transmission. The data format conversion completely compensates for the XPM degradation, while resulting in an optical signal-to-noise ratio (OSNR) transmission penalty of < 2 dB for converted RZ-BPSK relative to original RZ-OOK.
Retrieval of optical and microphysical properties of aerosols from a hybrid lidar dataset
Creators: name: Sawamura, Patricia
Publisher: name: Maryland Shared Open Access Repository
Year: 2013
Subjects: Lidar
microphysical retrievals
multiwavelength lidar

description: Over the past decade the development of inversion techniques for the retrievals of aerosol microphysical properties (e.g. effective radius, volume and surface-area concentrations) and aerosol optical properties (e.g. complex index of refraction and single scattering albedo) from multiwavelength lidar systems brought a new perspective in the study of the vertical distribution of aerosols. In this study retrievals of such parameters were obtained from a hybrid multiwavelength lidar dataset for the first time. In July of 2011, in the Baltimore-Washington DC region, synergistic profiling of optical and microphysical properties of aerosols with both airborne in-situ and ground-based remote sensing systems was performed during the first deployment of DISCOVER-AQ. The hybrid multiwavelength lidar dataset combines elastic ground-based measurements at 355 nm with airborne High Spectral Resolution Lidar (HSRL) measurements at 532 nm and elastic measurements at 1064 nm that were obtained less than 5 km apart of each other. This was the first study to our knowledge in which optical and microphysical retrievals from lidar were obtained during the day and directly compared to AERONET and in-situ measurements for eleven cases. Good agreement was observed between lidar and AERONET retrievals. Larger discrepancies were observed between lidar retrievals and in-situ measurements obtained by the aircraft and aerosol hygroscopic effects are believed to be the main factor of such discrepancies.
Modularity and community structure in networks
Creators: name: Newman, M. E. J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Data Analysis, Statistics and Probability (physics.data-an)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: Many networks of interest in the sciences, including a variety of social and biological networks, are found to divide naturally into communities or modules. The problem of detecting and characterizing this community structure has attracted considerable recent attention. One of the most sensitive detection methods is optimization of the quality function known as "modularity" over the possible divisions of a network, but direct application of this method using, for instance, simulated annealing is computationally costly. Here we show that the modularity can be reformulated in terms of the eigenvectors of a new characteristic matrix for the network, which we call the modularity matrix, and that this reformulation leads to a spectral algorithm for community detection that returns results of better quality than competing methods in noticeably shorter running times. We demonstrate the algorithm with applications to several network data sets.
description: 7 pages, 3 figures
РОЛЬ ИНТЕГРАЦИИ ОБРАЗОВАТЕЛЬНОЙ И НАУЧНО-ИССЛЕДОВАТЕЛЬСКОЙ ДЕЯТЕЛЬНОСТИ В ПОВЫШЕНИИ КВАЛИФИКАЦИИ СПЕЦИАЛИСТОВ КОНДИТЕРСКИХ ПРЕДПРИЯТИЙ
Creators: name: РУДЕНКО ОКСАНА СЕРГЕЕВНА
name: САВЕНКОВА ТАТЬЯНА ВАЛЕНТИНОВНА
name: СВЯТОСЛАВОВА ИРИНА МИХАЙЛОВНА
Publisher: name: Пищевая промышленность
Year: 2019
Subjects: ВЫСШЕЕ ОБРАЗОВАНИЕ
КОНДИТЕРСКАЯ ПРОМЫШЛЕННОСТЬ
НАУЧНО-ИССЛЕДОВАТЕЛЬСКИЙ ИНСТИТУТ
ПРОФЕССИОНАЛЬНОЕ ОБРАЗОВАНИЕ
ФИЗИКО-ХИМИЧЕСКИЕ МЕТОДЫ АНАЛИЗА

description: За последние десятилетия во всем мире изменились требования к обучению в результате глубоких изменений в профессиональной квалификационной структуре рабочей силы. Затраты на обучение и повышение квалификации сотрудников намного эффективнее, чем инвестиции в новую технику и оборудование. В настоящее время расходы крупных международных компаний на корпоративное обучение составляют 6-7 % общих расходов на персонал. Тенденцию роста интереса к образовательным программам подтверждает анализ результатов работы института на международных промышленных выставках 2017-2018 гг.: более 15 % запросов посетителей стенда ВНИИКП на выставке Modern Bakery-2018. В Российской Федерации профессиональное обучение реализуется по основным образовательным программам среднего и высшего уровня и по дополнительным образовательным программам. Учащиеся, окончившие вузы по направлениям подготовки 19.00.00 «Промышленная экология и биотехнологии», обладают широким кругом профессиональных компетенций, касающихся продуктов питания из растительного сырья. Тесное сотрудничество профильного научно-исследовательского института кондитерской промышленности с предприятиями кондитерской отрасли позволяет выявить те компетенции, которые необходимы специалистам, работающим в отрасли. ВНИИКП осуществляет образовательную деятельность по программе подготовки кадров высшей квалификации по направлению подготовки 19.06.01 «Промышленная экология и биотехнологии». За последние 8 лет в Институте кондитерской промышленности выполнены и успешно защищены 8 диссертаций, 2 из которых уровня докторских. ВНИИ кондитерской промышленности осуществляет также образовательную деятельность по программам дополнительного профессионального образования. Программами предусмотрены как теоретические лекции по вопросам маркировки кондитерских изделий в соответствии с требованиями действующего законодательства, проблемам, возникающим при производстве и хранении кондитерских изделий, идентификации, так и практические лабораторные занятия по физико-химическим методам анализа. Практический курс учитывает специфику кондитерских изделий, включает обучение методам по определению показателей пищевой ценности, физико-химических показателей качества, в том числе методами газожидкостной хроматографии. Накопленный уникальный опыт в практико-ориентированном образовании позволяет применить его в деятельности института по повышению квалификации инженерных и научных кадров и, несомненно, имеет хороший потенциал для развития.
QCD prediction for the non-$D\bar D$ annihilation decay of $ψ(3770)$
Creators: name: He, Zhi-Guo
name: Fan, Ying
name: Chao, Kuang-Ta
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: To clarify the marked difference between BES and CLEO measurements on the non-$D\bar D$ decays of the $ψ(3770)$, a $1^{3}D_{1}$-dominated charmonium, we calculate the annihilation decay of $ψ(3770)$ in NRQCD. By introducing the color-octet contributions, the results are free from infrared divergences. The color-octet matrix elements are estimated by solving the evolution equations. The S-D mixing effect is found to be very small. With $m_{c}=1.5\pm0.1\textrm{GeV}$ our result is $Γ(ψ(3770)\to \textrm{light hadrons})=467^{-187}_{+338}\textrm{KeV}$. For $m_c=1.4$ GeV, together with the observed hadronic transitions and E1 transitions, the non-$D\bar D$ decay branching ratio of $ψ(3770)$ could reach about 5%. Our results do not favor either of the results of BES and CLEO collaborations, and further experimental tests are urged.
description: Version published in PRL, errors and typos corrected, references added
Two-dimensional electronic spectroscopy of bacteriochlorophyll a with synchronized dual mode-locked lasers
Creators: name: Kim, JunWoo
name: Jeon, Jonggu
name: Yoon, Tai Hyun
name: Cho, Minhaeng
Publisher: name: arXiv
Year: 2020
Subjects: subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: How atoms and electrons in a molecule move during a chemical reaction and how rapidly energy is transferred to or from the surroundings can be studied with flashes of laser light. However, despite prolonged efforts to develop various coherent spectroscopic techniques, the lack of an all-encompassing method capable of both femtosecond time resolution and nanosecond relaxation measurement has hampered various applications of studying correlated electron dynamics and vibrational coherences in functional materials and biological systems. Here, we demonstrate that two broadband (>300 nm) synchronized mode-locked lasers enable two-dimensional electronic spectroscopy (2DES) study of chromophores such as bacteriochlorophyll a in condensed phases to measure both high-resolution coherent vibrational spectrum and nanosecond electronic relaxation. We thus anticipate that the dual mode-locked laser-based 2DES developed and demonstrated here would be of use for unveiling the correlation between the quantum coherence and exciton dynamics in light-harvesting protein complexes and semiconducting materials.
description: 57 pages, 16 figures
Letter from W. R. Megaw to "Sir" [F. A. Hewer], March 26, 1909
Creators: name: Megaw, W.R.
Publisher: name: The University of British Columbia
Year: 2017

description: Letter to "Sir" [F. A. Hewer] from W. R. Megaw, dated March 26, 1909, regarding returned vouchers and an enclosed credit note for a cancelled order.
Super heavy particle production in high energy heavy ion collision
Creators: name: Kurepin, A. B.
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The estimate based on the parton model is made on the rate of production of Super Heavy Particle ( SHP ) in subthreshold collision of heavy ions at LHC. For the one month run of lead-lead collision the yield of 16 TeV particle is of the order of 70 per year.
description: 6 pages, 2 figures
On the luminosity function of galaxies in groups in the Sloan Digital Sky Survey
Creators: name: Zandivarez, Ariel
name: Martinez, Hector J.
name: Merchan, Manuel E.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: Using galaxy groups identified in the Fourth Data Release of the Sloan Digital Sky Survey (SDSS), we compute the luminosity function for several subsamples of galaxies in groups. In all cases, the luminosity functions are well described by Schechter functions, down to the faintest magnitudes we probe, $M_{\rb}-5\log(h)\sim-16$. For the general luminosity function of galaxies in groups in the five SDSS bands, we observe that the characteristic magnitude is brighter in $\sim 0.5$ magnitudes compared to those obtained for field galaxies by Blanton et al.. Even when the observed faint end slope is steeper in galaxy groups, it is statistically comparable with the field value. We analyze the dependence of the galaxy luminosity function with system masses finding two clear trends: a continuous brightening of the characteristic magnitude and a steepening of the faint end slope as mass increases. The results in $\gb$, $\rb$, $\ib$ and $\zb$ bands show the same behavior. Using the $u-r$ color to split the galaxy sample into red and blue galaxies, we show that the changes observed as a function of the system mass are mainly seen in the red, passively evolving, galaxy population, while the luminosities of blue galaxies remain almost unchanged with mass. Finally, we observe that groups having an important luminosity difference between the two brightest galaxies of a system show a steeper faint end slope than the other groups. Our results can be interpreted in terms of galaxy mergers as the main driving force behind galaxy evolution in groups.
description: 29 pages, 10 figures, submitted to Astrophysical Journal
ONA TILI VA ADABIYOTNI BOGʻLAB OʻQITISH
Creators: name: Ahmedova, Sarvinoz
Publisher: name: Zenodo
Year: 2024

description: Ushbu maqolada ona tili darslarini adabiyot fani bilan uzviy  bog‘liqligi xususida bir qancha fikr mulohazalar yuritiladi va misollar orqali izohlanadi.
Scrambling Ability of Quantum Neural Networks Architectures
Creators: name: Wu, Yadong
name: Zhang, Pengfei
name: Zhai, Hui
Publisher: name: arXiv
Year: 2020
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this letter we propose a general principle for how to build up a quantum neural network with high learning efficiency. Our stratagem is based on the equivalence between extracting information from input state to readout qubit and scrambling information from the readout qubit to input qubits. We characterize the quantum information scrambling by operator size growth, and by Haar random averaging over operator sizes, we propose an averaged operator size to describe the information scrambling ability for a given quantum neural network architectures, and argue this quantity is positively correlated with the learning efficiency of this architecture. As examples, we compute the averaged operator size for several different architectures, and we also consider two typical learning tasks, which are a regression task of a quantum problem and a classification task on classical images, respectively. In both cases, we find that, for the architecture with a larger averaged operator size, the loss function decreases faster or the prediction accuracy in the testing dataset increases faster as the training epoch increases, which means higher learning efficiency. Our results can be generalized to more complicated quantum versions of machine learning algorithms.
An investigation of ozone distribution downwind of Greater Vancouver, British Columbia using a novel aircraft measurement system
Creators: name: O’Kane, Stephen M.
Publisher: name: University of British Columbia
Year: 2009

description: A fast response chemiluminescent ozone sonde originally intended for use as a balloon borne instrument, was deployed on a single engine light aircraft to determine mean ozone concentrations in the boundary layer downwind of a major urban centre. Vancouver is a coastal city at the mouth of a major river delta and valley walled in by mountains to the north and east. Hence, the pollutant distribution during anti-cyclonic conditions is influenced by the thermally induced flows of the sea/land breeze and mountain/valley wind systems. This study focused on ozone concentration in a steep walled, glacial valley near the city, where ozone concentrations had not been previously monitored but were suspected to be high. Measurements confirmed this hypothesis and the mass budget of ozone for the valley was calculated for a period shortly after sunrise when the rate of boundary layer growth was at its maximum. The high levels of ozone found in the valley were partly attributed to residual layer storage of ozone above the nocturnal stable layer. This overnight storage of ozone during sustained anti-cyclonic conditions suggests that the Pitt River valley and possibly other tributary valleys represent an important net sink for ozone emanating from precursor sources in the Lower Fraser Valley.
On Miura Transformations and Volterra-Type Equations Associated with the Adler-Bobenko-Suris Equations
Creators: name: Levi, Decio
name: Petrera, Matteo
name: Scimiterna, Christian
name: Yamilov, Ravil
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mathematical Physics (math-ph)
subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: We construct Miura transformations mapping the scalar spectral problems of the integrable lattice equations belonging to the Adler-Bobenko-Suris (ABS) list into the discrete Schrödinger spectral problem associated with Volterra-type equations. We show that the ABS equations correspond to Bäcklund transformations for some particular cases of the discrete Krichever-Novikov equation found by Yamilov (YdKN equation). This enables us to construct new generalized symmetries for the ABS equations. The same can be said about the generalizations of the ABS equations introduced by Tongas, Tsoubelis and Xenitidis. All of them generate Bäcklund transformations for the YdKN equation. The higher order generalized symmetries we construct in the present paper confirm their integrability.
description: Published in SIGMA (Symmetry, Integrability and Geometry: Methods and Applications) at http://www.emis.de/journals/SIGMA/
Origin and roles of a strong electron-phonon interaction in cuprate oxide superconductors
Creators: name: Ohkawa, Fusayoshi J.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: A strong electron-phonon interaction arises from the modulation of the superexchange interaction by phonons. As is studied in Phys. Rev. B 70, 184514 (2004), Cu-O bond stretching modes can be soft around (pm pi/a, 0) and (0, pm pi/a), with a the lattice constant of CuO_2 planes. In the critical region of SDW, where antiferromagnetic spin fluctuations are developed around nesting wave numbers Q of the Fermi surface, the stretching modes can also be soft around 2Q. Almost symmetric energy dependences of the 2Q component of the density of states, which are observed in the so called stripe and checker-board states, cannot be explained by CDW with 2Q following the complete softening of the 2Q modes, but they can be explained by a second-harmonic effect of SDW with Q. The strong electron-phonon interaction can play no or only a minor role in the occurrence of superconductivity.
description: 5 pages, 1 fugure
Relativistic Reference Frames for Astrometry and Navigation in the Solar System
Creators: name: Kopeikin, Sergei
Publisher: name: arXiv
Year: 2006
Subjects: subject: Astrophysics (astro-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Astrophysical space missions deliver invaluable information about our universe, stellar dynamics of our galaxy, and motion of celestial bodies in the solar system. Astrometric space missions SIM and Gaia will determine distances to stars and cosmological objects as well as their physical characteristics and positions on the celestial sphere with microarcsecond precision. These and other space missions dedicated to exploration of the solar system are invaluable for experimental testing of general relativity. Permanently growing accuracy of space and ground-based astronomical observations require corresponding development of relativistic theory of reference frames, motion of celestial bodies, and propagation of light/radio signals from a source of light/radio to observer. Such theory must be based on Einstein's general relativity and account for various relativistic effects both in the solar system and outside of its boundary. We describe a hierarchy of the relativistic frames adopted by the International Astronomical Union in 2000, and outline directions for its theoretical and practical extentions by matching the IAU 2000 reference frames in the solar system to the cosmological Friedman-Robertson-Walker reference frame and to the frames used in the parametrized post-Newtonian formalism.
description: 16 pages, bugs in equations removed, minor changes in text, to appear in Proc. of the ASTROCON 2006 meeting (Princeton University, Princeton, NJ, USA) http://www.andrew.cmu.edu/user/jarrieta/blog/astrocon2006.shtml
ОСОБЕННОСТИ ТЕХНОЛОГИИ ПОЛУЧЕНИЯ КРИСТАЛЛИЧЕСКОЙ БЕТА-ГЛЮКОЗЫ
Creators: name: ХВОРОВА ЛЮДМИЛА СТЕПАНОВНА
Publisher: name: Пищевая промышленность
Year: 2019
Subjects: БЕТА-ГЛЮКОЗА
КРИСТАЛЛИЗАЦИЯ
МУТАРОТАЦИЯ
РАСТВОРИМОСТЬ

description: Бета-глюкоза отличается от других видов кристаллической глюкозы величиной удельного вращения, высокой температурой кристаллизации и высокой растворимостью. Цель исследований - получение бета-глюкозы и изучение ее основных свойств. Растворы с концентрацией 90-94 % СВ (сухих веществ) для исследований получали расплавлением гидратной глюкозы при температуре около 120 °С. Из растворов с СВ 93-94 % с затравкой из ангидридной бета-глюкозы при температуре 110…112 °С получали затравочные кристаллы бета-глюкозы. Их использовали в качестве затравки при испытаниях технологического режима кристаллизации бета-глюкозы. Для испытаний готовили растворы с СВ 90-91 %, при температуре 108 °С в них вносили 2 % вышеупомянутых затравочных кристаллов бета-глюкозы, что отвечало полной потребности в центрах кристаллизации. Далее их наращивали при уваривании раствора при постепенном снижении температуры кипения до 85 °С в течение 8 ч. Кристаллы из утфеля выделяли с помощью вакуума на воронке Бюхнера в термостате при температуре 110 °С. Затем сушили при такой же температуре. Исследование свойств кристаллов глюкозы показало: влажность 0,1-0,5 %, удельное вращение 24-25º и 19,8-20,1º после перекристаллизации, что подтверждало принадлежность кристаллов к бета-глюкозе. Скорость растворения кристаллов в воде при температуре 20 °С в 50 раз превышала скорость растворения гидратной глюкозы и в 10-15 раз - ангидридной альфа-глюкозы.
Anomalous diffusion for overdamped particles driven by cross-correlated white noise sources
Creators: name: Denisov, S. I.
name: Vitrenko, A. N.
name: Horsthemke, W.
name: Hänggi, P.
Publisher: name: arXiv
Year: 2006
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We study the statistical properties of overdamped particles driven by two cross-correlated multiplicative Gaussian white noises in a time-dependent environment. Using the Langevin and Fokker-Planck approaches, we derive the exact probability distribution function for the particle positions, calculate its moments and find their corresponding long-time, asymptotic behaviors. The generally anomalous diffusive regimes of the particles are classified, and their dependence on the friction coefficient and the characteristics of the noises is analyzed in detail. The asymptotic predictions are confirmed by exact solutions for two examples.
description: 15 pages
On quantum properties of the four-dimensional generic chiral superfield model
Creators: name: Banin, A. T.
name: Buchbinder, I. L.
name: Pletnev, N. G.
Publisher: name: arXiv
Year: 2006
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study a problem of systematical evaluation of the quantum corrections for general 4D supersymmetric Kähler sigma models with chiral and antichiral superpotentials. Using manifestly reparametrization covariant techniques (the background-quantum splitting and proper-time representation) in the ${\cal N}=1$ superspace we show how to define unambiguously the one-loop effective action. We introduce the reparametrization covariant derivatives acting on superfields and prove that their algebra is analogous to algebra in super Yang-Mills (SYM) theory. This analogy allows us to use for evaluation of the effective action in the theory under consideration methods developed for SYM theory. The divergencies for the model are obtained. It is shown that on general Kähler manifold the one-loop counterterms have the structure of a supersymmetric WZNW term. Leading finite contribution in covariant derivative expansion of the one-loop effective action (superfield $a_3$ coefficient) is calculated.
description: LaTeX, 17 pages, typos corrected, reference added
SLiMScape 3.x: a Cytoscape 3 app for discovery of Short Linear Motifsin protein interaction networks
Creators: name: Olirin, Emily
name: O'Brien, Kevin
name: Palopoli, Nicolás
name: Pérez-Bercoff, Åsa
name: Shields, Denis
name: Edwards, Richard
Publisher: name: F1000Research
Year: 2015

description: Short linear motifs (SLiMs) are small protein sequence patterns that mediate a large number of critical protein-protein interactions, involved in processes such as complex formation, signal transduction, localisation and stabilisation. SLiMs show rapid evolutionary dynamics and are frequently the targets of molecular mimicry by pathogens. Identifying enriched sequence patterns due to convergent evolution in non-homologous proteins has proven to be a successful strategy for computational SLiM prediction. Tools of the SLiMSuite package use this strategy, using a statistical model to identify SLiM enrichment based on the evolutionary relationships, amino acid composition and predicted disorder of the input proteins. The quality of input data is critical for successful SLiM prediction. Cytoscape provides a user-friendly, interactive environment to explore interaction networks and select proteins based on common features, such as shared interaction partners. SLiMScape embeds tools of the SLiMSuite package for de novo SLiM discovery (SLiMFinder and QSLiMFinder) and identifying occurrences/enrichment of known SLiMs (SLiMProb) within this interactive framework. SLiMScape makes it easier to (1) generate high quality hypothesis-driven datasets for these tools, and (2) visualise predicted SLiM occurrences within the context of the network. To generate new predictions, users can select nodes from a protein network or provide a set of Uniprot identifiers. SLiMProb also requires additional query motif input. Jobs are then run remotely on the SLiMSuite server (http://rest.slimsuite.unsw.edu.au) for subsequent retrieval and visualisation. SLiMScape can also be used to retrieve and visualise results from jobs run directly on the server.
Studies of high molecular weight systems by NMR spectroscopy
Creators: name: Jabar, Shereen
Publisher: name: The Australian National University
Year: 2019

description: Proteins are essential components for all living cells. For better understanding of proteins and how they work, it is essential to know their 3D structure as well as how they interact with other molecules and their dynamics. Nuclear magnetic resonance (NMR) spectroscopy is a versatile technique to study biomolecules, most notably proteins, in solution. NMR provides structural information at atomic resolution and, compared to the other techniques with similar resolution, the measurements can be carried out under near-physiological conditions that are meaningful for the investigation of dynamics. A great number of unnatural amino acids can now be incorporated into proteins both in vivo and by cell-free protein synthesis at genetically encoded positions. Isotopically labelled unnatural amino acids present outstanding probes for site-specific studies of proteins by NMR. In this thesis, the unnatural amino acid 13C-O-tert-butyltyrosine (13C-Tby) was incorporated as an NMR probe to study the proteins IMP-1 and the E. coli single-stranded DNA binding protein (SSB). IMP-1 is a clinically important metallo-beta-lactamase which catalyzes the hydrolysis of almost all beta-lactam antibiotics. In order to develop inhibitors against this enzyme it is important to understand its structure and dynamics. Pseudocontact shifts (PCSs) provide long-range structural information on biological macromolecules. In Chapter 2, PCSs were measured to study the conformation of an active site loop of IMP-1 and its change upon binding of a ligand. This loop is important as it lines the substrate binding site and contributes to substrate specificity. The results suggest that the binding of an inhibitor induces two different conformations in the loop which are in slow equilibrium between each other. E. coli SSB is a homotetramer of molecular mass 76 kDa. It binds single-stranded DNA (ssDNA) with high affinity and little sequence specificity in two main binding modes, named (SSB)65 and (SSB)35. Chapter 3 describes studies of ssDNA-SSB complexes at high and low salt concentrations by solution NMR spectroscopy. Furthermore, experiments were conducted to determine the binding polarity of ssDNA on SSB. The results obtained are in broad agreement with the unusual binding polarity reported by the crystal structure of a complex between E. coli SSB and a poly-deoxycytidine oligomer. In addition to using the tert-butyl group of a Tby residue as an NMR probe, the present thesis introduced a novel chemical tag containing a trimethylsilyl (TMS) group. Chapter 4 demonstrates the ability of the tert-butyl and TMS groups to deliver site-specific information in high-molecular weight systems without any isotope labelling. The approach was illustrated by measuring intermolecular nuclear Overhauser effects (NOEs) in the 95 kDa complex between SSB and ssDNA.
A Graph-Theoretic Approach to Collusion Detection in Multi-Agent Systems
Creators: name: Hamilton, Peter Allen
Publisher: name: Maryland Shared Open Access Repository
Year: 2011
Subjects: collusion
collusion detection
collusion mechanism
game theory
master/slave strategy
multi-agent systems

description: The study of trust and cooperation is a major component of multi-agent systems research. Such work often focuses on how best to estimate the reliability of a specific agent, or how to create strategies and protocols that engender the most cooperation from the most agents. However, when cooperation is not a desired aspect of a multi-agent system, these actions define collusive behavior, which can have a significant impact on the dynamics of the system. This thesis defines a generic, graph-theoretic approach to collusion detection known as Collusion Detection using Interaction Graphs (CODING). This approach detects group-based collusion, targeting two basic collusion mechanisms that rely on large numbers of colluding agents for success. CODING analyzes and classifies agent interactions from the system and constructs a series of interaction graphs from this data. These graphs are processed for structures that correspond to collusion mechanisms; the agents composing these structures are reported as colluders. CODING is applied to a game theory domain, in which it must detect agents adhering to group strategies in round-robin tournaments composed of single-player strategies.
New York Times Upshot/Siena College: November 2018 Iowa 04 Poll
Creators: name: New York Times
Publisher: name: Roper Center for Public Opinion Research
Year: 2021

description: Likelihood of voting in 2018 election (2); vote for Democrat/Republican for Congress (1); Iowa Congressional District 04 (1); Democratic Candidate J.D. Scholten (1); Republican Candidate Steve King (1); opinion of various public figures (2); respondent would like Democrats/Republicans to control House of Representatives (1); President Donald Trump job performance (1); immigration/immigrants (4); reverse racism (1); political partisanship (1).
Overcoming Multi-drug Resistance Using Glutathione S-Transferase-activated Anticancer Agents
Creators: name: See, Bee Koon
Publisher: name: Maryland Shared Open Access Repository
Year: 2008
Subjects: Chemistry, Biochemistry(0487)

description: Multi-drug resistance (MDR) is an important challenge in medicinal enzymology. Since the pi isozyme of human Glutathione S-transferase (hGSTP1-1) is often over-expressed in MDR tumor cells, one strategy to overcome MDR is to make substrates that will become more toxic in the presence of hGSTP1-1. A class of 2-crotonyloxymethylcycloalkenone compounds (COMCs), derivatives of a cytotoxic metabolite isolated from Streptomyces griseosporeus, was investigated as substrates for hGSTP1-1. Catalysis was found to involve the formation of a cytotoxic exocyclic enone that accounts for the anti-tumor activities of these compounds. Other workers have found that nitric oxide induces apoptosis in tumor cells when delivered by nitric oxide donors - diazeniumdiolates. A diazeniumdiolate derivative of COMC, O2-(2-methyl-cyclohexen-1-one) [1-(N, N-diethylamino)diazen-1-ium-1,2-diolate] (COMC-NO) was synthesized. The kinetic parameters from the reaction between COMC-NO and glutathione were obtained: non-enzymatic second order rate constant = 0.109 mM-1min-1 and kcat/KM = 0.56 x 103 mM-1 min-1. These rate constants suggest possible MDR selectivities. The synthesis of lactam derivative of COMC was attempted unsuccessfully.
Brachytrupes politus Bolivar 1890
Creators: name: Simeu-Noutchom, Alain
name: Heller, Klaus-Gerhard
name: Nyobe, Philene Corinne Aude Um
name: Kekeunou, Sevilor
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Orthoptera
Gryllidae
Brachytrupes
Brachytrupes politus

description: Species Brachytrupes politus Bolívar, 1890 (Table 1)
Brachytrypes politus Bolivar, 1890: p. 328
Type material: holotype ♀, Africa, East Tropical Africa, Tanzania, Onyanyembe, Tabora. MNCN.
Description (Bolívar 1890; Otte et al. 1988). Resembles B. calaharicus closely, but with higher head and with a depression on forehead between lateral ocelli. Body colour dark brown; legs and venter pale brown; cheeks pale brown but with a black marking below each eye. Pronotum: disc dark brown; with a pale area in lower anterior half of lateral lobes. Forewings dark brown, extending beyond end of abdomen. Hind wings extending well beyond forewings. Front and middle legs similar to B. calaharicus. Hind legs: femora pale brown with a dark band next to knees.
description: Published as part of Simeu-Noutchom, Alain, Heller, Klaus-Gerhard, Nyobe, Philene Corinne Aude Um & Kekeunou, Sevilor, 2023, Taxonomy review of the genus Brachytrupes (Orthoptera: Gryllidae) with the description of a new species and key to the species, pp. 373-388 in Zootaxa 5336 (3) on page 377, DOI: 10.11646/zootaxa.5336.3.4, http://zenodo.org/record/8281577
Furthering Understanding of Outcomes in Families with Complex Acculturation Gaps: The Utility of a Family Resilience Model
Creators: name: Buckingham, Sara Louise
Publisher: name: Maryland Shared Open Access Repository
Year: 2013
Subjects: Acculturation
Acculturation Gaps
Families
Immigration
Qualitative Research
Resilience

description: In light of mixed findings regarding the malevolence or benevolence of acculturation gaps in mixed-generation immigrant families, this research adopted a qualitative methodology in order to explore the rich complexity of acculturation gaps.  Through individual, dyadic, and family semi-structured interviews with two Salvadoran immigrant families this study (a) explored the ways in which family members arrived at their current ascription to practices, values, and identifications, or their acculturative status, (b) identified gaps in components of such statuses among multiple members of the families, and (c) utilized a family resilience model to investigate ways in which the families navigated acculturation gaps. The individual and family narratives were analyzed using constructivist grounded theory, guided by the theories of bidimensional acculturation, acculturation-gap distress, and family resilience.  This research revealed that family members often changed their practices in response to their current contexts, but tended to view their values and identifications as enduring, a result of their family and the culture in which they were raised.  It also noted that many gaps occurred between all members of the family, but that gaps were most prevalent and contentious between the eldest child of each family and their fathers.  Finally, this research identified 18 diverse ways in which families navigated these gaps depending on their quality.  As such, this research demonstrated that (1) a family resilience model can be applied to the study of acculturation gaps and (2) expansion of this model as applied to acculturation gaps might be indicated.
A pair of UV nuclei or a compact star forming region near the active nucleus in Mrk~766?
Creators: name: Deka, P. P.
name: Dewangan, G. C.
name: Singh, K. P.
name: Postma, J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We report the discovery of a bright, compact ultraviolet source at a projected separation of 1.1~kpc from the known active galactic nucleus (AGN) in Mrk~766 based on Astrosat/UVIT observations. We perform radial profile analysis and derive the UV flux almost free from the nearby contaminating sources. The new source is about 2.5 and 5.6 times fainter than the AGN in the far and near UV bands. The two sources appear as a pair of nuclei in Mrk~766. We investigate the nature of the new source based on the UV flux ratio, X-ray and optical emission. The new source is highly unlikely to be another accreting supermassive black hole in Mrk~766 as it lacks X-ray emission. We find that the UV/Optical flux of the new source measured at four different bands closely follow the shape of the template spectrum of starburst galaxies. This strongly suggests that the new source is a compact star-forming region.
Accumulating masculinity : polygyny and the transnational families of Taiwanese expatriates in Vietnam
Creators: name: Tien, Ching-Ying
Publisher: name: The Australian National University
Year: 2014
Subjects: subject: Masculinity Vietnam
subject: Polygyny Vietnam
subject: Taiwanese Vietnam
subject: Transnationalism
subject: Families Vietnam

description: Drawing on the cases of Taiwanese expatriates in Vietnam, this research aims to examine and understand the forming and keeping of the cross-border triangular relationship, and the special logics and sentiments of the three parties involving in the relations. The commercial logics, forged against the background of massive economic disparity between Taiwanese investors and lower class Vietnamese women, structure their relationship. These logics, however, fail to address the complicities of the relationships. Under the context of Confucianism and Capitalism, men's economic capital, social capital, and together with sexual capital all link to their hypermasculinity. The men in my research construct home away from home, which accomplishes their masculinity and fills the emptiness of their transplanted lives. Within the relationships initially understood as explicitly commercial, affects do indeed play an important role. On the part of Vietnamese women, being mistresses of foreign men is sacrificing for their families, as well as egoistic for themselves. They could arguably be understood as traditional women who are willing to enter polygyny, yet modern ones who are readily to have an open relationship and gain capitals from it. While wives in Taiwan are not simply victims, they are able to negotiate modern choices and course of action that are often under covered by the Confucian tradition. Here, polygyny is not restored but strategized to make the marriage work under modern economic deployment, and become a post-traditional marriage arrangement. Globalization not only changes the pattern of accumulation, but also changes the structure of transnational families.
A Gossip-based Energy Efficient Protocol for Robust In-network Aggregation in Wireless Sensor Networks
Creators: name: Fauji, Shantanu S.
Publisher: name: Maryland Shared Open Access Repository
Year: 2010
Subjects: Gossip
In-network Aggregation
Selective listening
Sensor Networks

description: We consider the problem of energy efficient and fault tolerant in-network aggregation for wireless sensor networks (WSNs). In-network aggregation is the process of aggregation while collecting data from sensors to the base station. This process should be energy efficient due to the limited energy at the sensors and tolerant to the high failure rates common in sensor networks. Tree based in-network aggregation protocols, although energy efficient, are not robust to network failures. Multipath routing protocols are robust to failures to a certain degree but are not energy efficient due to the overhead in the maintenance of multiple paths. We propose a new protocol for in-network aggregation in WSNs, which is energy efficient, achieves high lifetime, and is robust to the changes in the network topology. Our protocol, gossip-based protocol for in-network aggregation (GPIA) is based on the spreading of information via gossip. GPIA is not only adaptive to failures and changes in the network topology, but is also energy efficient. Energy efficiency of GPIA comes from all the nodes being capable of selective message reception and detecting convergence of the aggregation early. We experimentally show that GPIA provides significant improvement over some other competitors like the Ridesharing, Synopsis Diffusion and the pure version of gossip. GPIA shows ten fold, five fold and two fold improvement over the pure gossip, the synopsis diffusion and Ridesharing protocols in terms of network lifetime, respectively. Further, GPIA retains gossip's robustness to failures and improves upon the accuracy of synopsis diffusion and Ridesharing.
Multiple solutions of steady MHD flow of dilatant fluids
Creators: name: Hammouch, Zakia
Publisher: name: arXiv
Year: 2008
Subjects: subject: Classical Physics (physics.class-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: In this paper we consider the problem of a steady MHD flow of a non-Newtonian power-law and electrically conducting fluid in presence of an applied magnetic field. The boundary layer equations are solved in similarity form via the Lyapunov energy method, we show that this problem has an infinite number of positive global solutions.