bluuebunny/crossref_metadata_2025 huggingface dataset:
Optical Counterparts of Ultraluminous X-Ray Sources NGC 4559 X-10 and NGC 4395 ULX-1
Authors: Vinokurov A. , Fabrika S. , Atapin K.
Published: February 2018

We study the optical counterparts of ultraluminous X-ray sources (ULXs) NGC 4559 X-10 and NGC 4395 ULX-1. Their absolute magnitudes, after taking reddening into account, are M

V
 ≈ −5.3 and M

V
 ≈ −6.2, respectively. The spectral energy distribution (SED) of the NGC 4559 X-10 counterpart is well fitted by a spectrum of an A-type star, whereas NGC 4395 ULX-1 has a blue power-law spectrum. Optical spectroscopy of NGC 4395 ULX-1 has shown a broad He ii λ4686 emission, which puts this object in line with all of the other spectrally studied ULXs. Analyzing the absolute magnitudes of 16 well-studied ULX counterparts, we find that the intrinsically fainter counterparts with M

V
 ≳ −5.5 have, on average, blackbody-like or power-law SEDs. In other ULX counterparts with M

V
 ≲ −5.5, we may observe a power-law-like SED; the only one donor is in NGC 7793 P13 (the ULX-pulsar). One may suggest that as the original accretion rate decreases (but nevertheless remains supercritical), the optical luminosity of the wind becomes lower and the donor star might dominate. Using the Swift archival X-ray data for NGC 4395 ULX-1, we have found a period of 62.8 ± 2.3 days. The X-ray phase curve of the source is very similar to the precession curve of SS 433.
A Statistical Approach to Identify Superluminous Supernovae and Probe Their Diversity
Authors: Inserra C. , Prajs S. , Gutierrez C. P. , Angus C. , Smith M. , Sullivan M.
Published: February 2018

We investigate the identification of hydrogen-poor superluminous supernovae (SLSNe I) using a photometric analysis, without including an arbitrary magnitude threshold. We assemble a homogeneous sample of previously classified SLSNe I from the literature, and fit their light curves using Gaussian processes. From the fits, we identify four photometric parameters that have a high statistical significance when correlated, and combine them in a parameter space that conveys information on their luminosity and color evolution. This parameter space presents a new definition for SLSNe I, which can be used to analyze existing and future transient data sets. We find that 90% of previously classified SLSNe I meet our new definition. We also examine the evidence for two subclasses of SLSNe I, combining their photometric evolution with spectroscopic information, namely the photospheric velocity and its gradient. A cluster analysis reveals the presence of two distinct groups. “Fast” SLSNe show fast light curves and color evolution, large velocities, and a large velocity gradient. “Slow” SLSNe show slow light curve and color evolution, small expansion velocities, and an almost non-existent velocity gradient. Finally, we discuss the impact of our analyses in the understanding of the powering engine of SLSNe, and their implementation as cosmological probes in current and future surveys.
A Self-consistent Cloud Model for Brown Dwarfs and Young Giant Exoplanets: Comparison with Photometric and Spectroscopic Observations
Authors: Charnay B. , Bézard B. , Baudino J.-L. , Bonnefoy M. , Boccaletti A. , Galicher R.
Published: February 2018

We developed a simple, physical, and self-consistent cloud model for brown dwarfs and young giant exoplanets. We compared different parametrizations for the cloud particle size, by fixing either particle radii or the mixing efficiency (parameter f
sed), or by estimating particle radii from simple microphysics. The cloud scheme with simple microphysics appears to be the best parametrization by successfully reproducing the observed photometry and spectra of brown dwarfs and young giant exoplanets. In particular, it reproduces the L–T transition, due to the condensation of silicate and iron clouds below the visible/near-IR photosphere. It also reproduces the reddening observed for low-gravity objects, due to an increase of cloud optical depth for low gravity. In addition, we found that the cloud greenhouse effect shifts chemical equilibrium, increasing the abundances of species stable at high temperature. This effect should significantly contribute to the strong variation of methane abundance at the L–T transition and to the methane depletion observed on young exoplanets. Finally, we predict the existence of a continuum of brown dwarfs and exoplanets for absolute J magnitude = 15–18 and

color = 0–3, due to the evolution of the L–T transition with gravity. This self-consistent model therefore provides a general framework to understand the effects of clouds and appears well-suited for atmospheric retrievals.
The Progenitor Dependence of Core-collapse Supernovae from Three-dimensional Simulations with Progenitor Models of 12–40 M⊙
Authors: Ott Christian D. , Roberts Luke F. , da Silva Schneider André , Fedrow Joseph M. , Haas Roland , Schnetter Erik
Published: February 2018

We present a first study of the progenitor star dependence of the three-dimensional (3D) neutrino mechanism of core-collapse supernovae. We employ full 3D general-relativistic multi-group neutrino radiation-hydrodynamics and simulate the postbounce evolutions of progenitors with zero-age main sequence masses of 12, 15, 20, 27, and 40 M
⊙. All progenitors, with the exception of the 12 M
⊙ star, experience shock runaway by the end of their simulations. In most cases, a strongly asymmetric explosion will result. We find three qualitatively distinct evolutions that suggest a complex dependence of explosion dynamics on progenitor density structure, neutrino heating, and 3D flow. (1) Progenitors with massive cores, shallow density profiles, and high post-core-bounce accretion rates experience very strong neutrino heating and neutrino-driven turbulent convection, leading to early shock runaway. Accretion continues at a high rate, likely leading to black hole formation. (2) Intermediate progenitors experience neutrino-driven, turbulence-aided explosions triggered by the arrival of density discontinuities at the shock. These occur typically at the silicon/silicon–oxygen shell boundary. (3) Progenitors with small cores and density profiles without strong discontinuities experience shock recession and develop the 3D standing-accretion shock instability (SASI). Shock runaway ensues late, once declining accretion rate, SASI, and neutrino-driven convection create favorable conditions. These differences in explosion times and dynamics result in a non-monotonic relationship between progenitor and compact remnant mass.
Habitable Evaporated Cores and the Occurrence of Panspermia Near the Galactic Center
Authors: Chen Howard , Forbes John C. , Loeb Abraham
Published: February 2018

Black holes growing via the accretion of gas emit radiation that can photoevaporate the atmospheres of nearby planets. Here, we couple planetary structural evolution models of sub-Neptune-mass planets to the growth of the Milky Way’s central supermassive black hole, Sgr A*, and investigate how planetary evolution is influenced by quasar activity. We find that, out to ∼20  pc from Sgr A*, the XUV flux emitted during its quasar phase can remove several percent of a planet’s H/He envelope by mass; in many cases, this removal results in bare rocky cores, many of which are situated in the habitable zones of G-type stars. Near the Galactic Center, the erosion of sub-Neptune-sized planets may be one of the most prevalent channels by which terrestrial super-Earths are created. As such, the planet population demographics may be quite different close to Sgr A* than in the galactic outskirts. The high stellar densities in this region (about seven orders of magnitude greater than the solar neighborhood) imply that the distance between neighboring rocky worlds is short (500–5000 au). The proximity between potentially habitable terrestrial planets may enable the onset of widespread interstellar panspermia near the nuclei of our galaxy. More generally, we predict these phenomena to be ubiquitous for planets in nuclear star clusters and ultra-compact dwarfs. Globular clusters, on the other hand, are less affected by the central black holes.
Flanged Bombardier beetles from Shanghai, China, with description of a new species in the genus Eustra Schmidt-Goebel (Coleoptera, Carabidae, Paussinae)
Authors: Song Xiao-Bin , Tang Liang , Peng Zhong
Published: February 2018

Four paussine species belonging to three different genera are discovered in Shanghai. A new species,EustrashanghaiensisSong,sp. n., is described, illustrated, and distinguished from the treated congeners. New distributional data or biological notes onEustrachinensisBänninger, 1949,ItamuscastaneusSchmidt-Goebel, 1846, andPlatyrhopalusdavidisFairmaire, 1886 are provided.
Abelardo Gamarra y un lugar llamado Pelagatos (o los extramuros de la modernidad)
Authors: Espinoza Jannet Torres
Published: February 2018

En 1885, Abelardo Gamarra creó Pelagatos, un pueblo imaginario en la sierra peruana, con geografía agreste y marcadas carencias sociales. Sostengo que Gamarra con Pelagatos intentó representar los temores de Lima de no ser una ciudad moderna.
“La necesidad de contar la dictadura argentina en palabras propias”. Una entrevista a Inés Garland, Mariana Eva Pérez y Julián López
Authors: Niemeyer Katharina , Torres Victoria
Published: February 2018

En octubre de 2014 tuvo lugar la tercera edición del taller de creadores organizado por Katharina Niemeyer y Victoria Torres en la Universidad de Colonia, Alemania. Bajo el título La niñez en los tiempos de dictadura el encuentro reunió a los autores alemanes Jochen Schmidt, Gritt Poppe y Dirk Reinhardt con sus pares argentinos, Felix Bruzzone, Inés Garland, Julián López y Mariana Eva Pérez. En ese marco las organizadoras dialogaron con los tres últimos y de allí surgió la entrevista que reproducimos a continuación.
« Entre los dos crepúsculos del día » : Lo olvidamos todo (1967) de Fanny Rabel
Authors: Comisarenco Dina
Published: February 2018

En este trabajo se estudian algunas de las variadas referencias iconográficas que la artista polaco-mexicana Fanny Rabel (1922-2008) combinó en su obra Lo olvidamos todo (1967), para expresar algunos aspectos muy significativos de los paralelos que existen entre la memoria individual y la colectiva. La característica perspectiva de género propia de Rabel, acostumbrada a considerar las experiencias y los sentimientos personales, probablemente fue influida por la dolorosa observación de la pérdida de memoria sufrida por su padre unos años atrás, que le abrió la puerta para interpretar la amnesia histórica de su época y la necesidad de combatirla. En la obra, en correspondencia con la teoría freudiana, Rabel visualizó la indestructibilidad del pasado traumático, demostrando que este se repite incesantemente cuando aparentemente es olvidado, es decir no reconocido o desarrollado, tanto a nivel personal como social.
Buenos Aires 7 de agosto de 1980. Première photographie argentine de Samuel Rimathé
Authors: Jarak Diego
Published: February 2018

L’article se propose d’analyser le premier cliché réalisé par le photographe Samuel Rimathé en Argentine, Buenos Aires 7 de agosto de 1890. L’apport du photographe suisse à l’histoire visuelle argentine est indiscutable. À cela s’ajoute son extraordinaire capacité d’observation, et la qualité de ses travaux, tant par leurs aspects techniques que par leurs compositions.
La réflexion de Manuel González Prada et José Carlos Mariátegui sur l’intégration de l’Indien à la Nation : Aspects idéologiques et esthétiques
Authors: Fourtané Nicole
Published: February 2018

Cet article met en lumière l’évolution de la réflexion des deux principaux penseurs radicaux sur la situation des Indiens dans le pays : véritables serfs, parias, chair à canon et pourtant cœur de la nationalité. Pour Manuel González Prada, ils sont le véritable Pérou. Il faut faire d’eux des citoyens, c’est-à-dire des hommes libres. Pour José Carlos Mariátegui (1894-1930), l’Indien est le ciment de la nationalité péruvienne en formation. Il veut construire l’État socialiste sur le modèle de l’ayllu incaïque et les Indiens eux-mêmes doivent être les artisans de cette construction. Les illustrations de la couverture de la revue Amauta (1926-1930), qui privilégient le monde andin et sa culture, se veulent au service de ce projet politique.
Un poeta latinoamericano en la Gran Guerra: Salomón de la Selva y El soldado desconocido (1922)
Authors: Niemeyer Katharina
Published: February 2018

La Gran Guerra (1914-1918) tuvo repercusiones también en el ámbito de la cultura y la literatura latinoamericanas. Uno de los ejemplos más importantes e ilustrativos al respecto es el poemario El soldado desconocido (1922), del entonces joven Salomón de la Selva, de Nicaragua, que durante las últimas semanas participó en la contienda. El presente estudio analiza el modo y la finalidad del poemario en el contexto europeo y latinoamericano.
Parameters Dependence of Fibers Diameter and Pores Area in Electrospinning
Authors: Zdraveva Emilija , Mijovic Budimir
Published: February 2018

Electrospinning has become the most popular nanofibers production technique that many scientists around the world were intrigued by. It is based on electrostatic forces stretching a polymer solution that undergoes bending instability and eventually results in number of fine nanoscaled filaments. The study reports of four processing parameters effect on electrospun polyethylene oxide (PEO) fibers diameter and pores area. Fibers diameter increase results from the increase of time, volume flow rate and tip to collector distance with a critical value of the first two parameters. The pores area showed both decrease and increase after a critical value of the electrical voltage at 19 kV, while the mean pores area decreased with the time increase. Irregular trends of increasing and decreasing trends of the means pores area were noticed with the change of the volume flow rate and tip to collector distance..
Effect of Acidulated Phosphate Fluoride Gel on the Surface of Dental Nanocomposite Restorative Materials
Authors: Dionysopoulos Dimitrios , Koliniotou-Koumpia Eugenia
Published: February 2018

The aim of this in vitro study was to investigate the changes in surface roughness of different nanocomposite restoratives and enamel after application of 1.23% acidulated phosphate fluoride (APF) gel. Twelve specimens were prepared for each composite material and human enamel. The APF gel was applied to the surface of the six specimens of each experimental group for 60 sec every 24 h for 4 days. The other six specimens did not receive APF treatment (control). The surface roughness was measured using a VSI microscope. One-way ANOVA and Tukey’s test were used to compare surface roughness between materials for each experimental group at a level of significance of a=0.05. There were no statistically significant differences in Ra values among the composites which did not receive APF treatment (p>0.05). After APF treatment the lowest surface roughness exhibited enamel (0.18±0.04 Ra) and the highest Dyract Extra (0.62±0.07 Ra) followed by Tetric EvoCeram (0.59±0.06 Ra) and Beautifil II (0.51±0.06 Ra). Filtek Z350 XT presented the lowest Ra values (0.23±0.03). All the experimental groups exhibited higher Ra values after APF treatment (p<0.05), except for Filtek Z350 XT (p>0.05). Application of APF gel on the specimen surfaces influenced the surface roughness of enamel and the tested dental composite restoratives depending on their composition.
Controllable Growth of ZnO Microstructures via a Solution Route
Authors: Li Xiao Long , Hou Shu Ping , Zhang Li Cheng , Wang Bin , Xiao Ren Xing , Liu Xi Feng
Published: February 2018

A facile method has been developed to fabricate ZnO microstructures by a solution route at an 80°C. The microstructures with various morphologies were fabricated in water or anhydrous ethanol by using polyvinylpyrrolidone and cetyltrimethylammonium bromide as surfactants. ZnO rods with aspect ratios up to 30 have been created successfully in water through a hydrothermal process, while novel shuttle-like ZnO microstructures were fabricated in anhydrous ethanol using a similar procedure. ZnO rods revealed wurtzite-type crystal structure according to their X-ray diffraction (XRD) patterns. The morphologies of ZnO microstructures were adjusted conveniently by changing solvents and surfactants. In addition, the sizes of ZnO microstructures decreased under a long reaction time. This morphological evolution of ZnO microstructures indicated that the growth of ZnO is susceptive to reaction time due to the reaction between ZnO and aqueous ammonia. The facile strategy described here would be utilizable for the preparation of various metal oxide microstructures.
Cathodic Arc Deposition of TiCN Coatings - Influence of the C2H2/N2 Ratio on the Structure and Coating Properties
Authors: Petkov Nikolay , Bakalova Totka , Bahchedzhiev Hristo , Louda Petr , Kejzlar Pavel , Capkova Pavla , Kormunda Martin , Rysanek Petr
Published: February 2018

TiCN thin coatings with various different carbon contents were deposited using cathode arc evaporation of pure titanium in a mixture of N2and C2H2gasses at a constant pressure of 1.5 Pa. The analyses show a transition from a stoichiometric to a non-stoichiometric coating structure with an increasing C2H2content. Moreover, the increase in the acetylene in the gas mixture leads to a decrease in the crystal phase from pure polycrystalline to pure amorphous. Nanohardness changes from 30.4 to 4.4 GPa and the cohesive failure of the coatings is in the range of 61 - 72 N. The tribology is estimated by the Ball-on-Disc method and an Si3N4ball as the counterpart. The measured coefficient of friction is in the range of 0.2 - 0.56.
Peptide–MHC Class I Tetramers Can Fail To Detect Relevant Functional T Cell Clonotypes and Underestimate Antigen-Reactive T Cell Populations
Authors: Rius Cristina , Attaf Meriem , Tungatt Katie , Bianchi Valentina , Legut Mateusz , Bovay Amandine , Donia Marco , thor Straten Per , Peakman Mark , Svane Inge Marie , Ott Sascha , Connor Tom , Szomolay Barbara , Dolton Garry , Sewell Andrew K.
Published: February 2018

Peptide-MHC (pMHC) multimers, usually used as streptavidin-based tetramers, have transformed the study of Ag-specific T cells by allowing direct detection, phenotyping, and enumeration within polyclonal T cell populations. These reagents are now a standard part of the immunology toolkit and have been used in many thousands of published studies. Unfortunately, the TCR-affinity threshold required for staining with standard pMHC multimer protocols is higher than that required for efficient T cell activation. This discrepancy makes it possible for pMHC multimer staining to miss fully functional T cells, especially where low-affinity TCRs predominate, such as in MHC class II–restricted responses or those directed against self-antigens. Several recent, somewhat alarming, reports indicate that pMHC staining might fail to detect the majority of functional T cells and have prompted suggestions that T cell immunology has become biased toward the type of cells amenable to detection with multimeric pMHC. We use several viral- and tumor-specific pMHC reagents to compare populations of human T cells stained by standard pMHC protocols and optimized protocols that we have developed. Our results confirm that optimized protocols recover greater populations of T cells that include fully functional T cell clonotypes that cannot be stained by regular pMHC-staining protocols. These results highlight the importance of using optimized procedures that include the use of protein kinase inhibitor and Ab cross-linking during staining to maximize the recovery of Ag-specific T cells and serve to further highlight that many previous quantifications of T cell responses with pMHC reagents are likely to have considerably underestimated the size of the relevant populations.
Clinical significance of positive Raoultella Ornithinolytica and Staphylococcus hominis cultures in a post lobectomy patient. A case report
Authors: Papakanderaki Evaggelina , Kanakakis Konstantinos , Goule Sotirios , Chounti Maria , Hountis Panagiotis
Published: February 2018

Raoultella Ornithinolytica (RO) is an encapsulated, Gram- negative, nonmotile aerobic rob which was reclassified from Klepsiella genus belonging in the family of Enterobacteriaceae. It is a rare human infection and few cases have been reported in post thoracotomy patients. Here we present a case of a left lower lobectomy patient that was complicated by pleural effusion and high fever with positive sputum cultures of Raoultella Ornithinolytica and positive pleural fluid cultures of Staphylococcus hominis. It is related with aquatic life poisoning. There are few cases reported and even fewer postoperatively. The infection is rare in human therefore the bacteria is still underreported.
Chemotherapy-colchicine interaction in a child with Familial Mediterranean Fever and Hodgkin Lymphoma
Authors: Langenberg-Ververgaert Karin Petra Sabine , Laxer Ronald M. , Punnett Angela S. , Dupuis Lee L , Finkelstein Yaron , Abla Oussama
Published: February 2018

Familial Mediterranean Fever (FMF) has been associated with hematological malignancies, but has not been reported in association with Hodgkin lymphoma (HL). We hereby describe the first pediatric patient with FMF and stage IIA nodular sclerosis HL. She was treated with prednisone, doxorubicin, vincristine and etoposide (OEPA). However, she suffered more than expected treatment-related toxicity due to interaction with colchicine. Colchicine had to be discontinued during her second cycle of chemotherapy which was well tolerated. She is currently in remission at 17 months after her HL diagnosis, and her FMF is under control with colchicine without any signs of toxicity.
OUTCOME AND TOXICITY PATTERNS IN CHILDREN AND ADOLESCENTS WITH NON-HODGKIN LYMPHOMA: A SINGLE INSTITUTION EXPERIENCE
Authors: Angelini Paola , Rodriguez Laura , Zolaly Mohammed , Naqvi Ahmed , Weitzman Sheila , Abla Oussama , Punnett Angela
Published: February 2018

Background: The incidence and biology of non-Hodgkin lymphoma (NHL) vary according to age. Some data suggest that the impact of age in pediatric and adolescent NHL patients depends on the histological subtype. Objectives: We aimed to analyze the impact of age at diagnosis on clinical characteristics and treatment-related toxicity in children and adolescents with NHL.Methods: Retrospective review of medical records of children and adolescents diagnosed with NHL at the Hospital for Sick children, Toronto, between January 1995 and December 2008.Results: 164 children were diagnosed with NHL during the study period, with a median age at diagnosis of 10 years. With a median follow-up of 6.2 years, 5-year OS in patients aged <15 and 15-18 years was 89± 2% vs 82% ± 6%, respectively (P = 0.30), and 5-year EFS was 84% ± 3% vs. 77% ± 7%  (P= 0.37). In Burkitts lymphoma (BL) and lymphoblastic lymphoma (LL) there was a trend towards better outcomes in children compared to adolescents, with EFS of  91% ± 4% vs. 75% ± 15%, respectively in BL (P= 0.17),  and 82% ± 7% vs. 51.4% ± 2% respectively in LL (P= 0.16). Late effects occurred in 21 patients (12.8%).Conclusions: Children with NHL aged < 15 years tend to have better survival rates and less long-term toxicity than adolescents aged 15-18 years.
CLINICAL AND HEMATOLOGICAL PROFILE OF PATIENTS WITH DENGUE FEVER AT A TERTIARY CARE HOSPITAL – AN OBSERVATIONAL STUDY
Authors: Tewari Vishal Vishnu , Tewari Kunal , Mehta Ritu
Published: February 2018

AbstractBackground: Dengue is a major health issue with seasonal rise in dengue fever cases imposing an additional burden on hospitals, necessitating bolstering of services in the emergency department, laboratory with creation of additional dengue fever wards.Objectives: To study the clinical and hematological profile of dengue fever cases presenting to a hospital.Methods: Patients with fever and other signs of dengue with either positive NS1 antigen test or IgM or IgG antibody were included. Age, gender, clinical presentation, platelet count and hematocrit were noted and patients classified as dengue fever (DF), dengue hemorrhagic fever (DHF) or dengue shock syndrome (DSS). Duration of hospitalization, bleeding manifestations, requirement for platelet component support and mortality were recorded.Results: There were 443 adults and 57 children between 6 months to 77 year age. NS1 was positive in 115 patients (23%). Fever (99.8%) and severe bodyache (97.4%) were the commonest presentation. DF was seen in 484 (96.8 %), DHF in 10 (2%) and DSS in 6 cases (1.2%). OPD treatment was needed in 412 (82%) and hospitalization in 88 (18%). Intravenous fluid resuscitation was needed in 16 (3.2%) patients. Thrombocytopenia was seen in 335 (67%) patients at presentation. Platelet transfusion was needed in 46 (9.2%). PRC transfusion was given in 3 patients with DF and 10 of DHF. Death occurred in 03 DSS and 2 DHF patients. Conclusions: Majority of DF cases can be managed on OPD basis. DHF and DSS carry high mortality. Hospitals can analyze annual data for resource allocation for capacity expansion.
Порождение знакопеременной группы модульными сложениями
Authors: Malyshev Fedor Mikhailovich
Published: February 2018

Рассматриваются системы образующих групп подстановок на декартовых произведениях колец вычетов. Каждая отдельная подстановка из системы образующих строится на основе сложений, характеризуется локальным действием, бо́льшую часть компонент преобразуемого элемента оставляет неизменной. Приводится критерий 2-транзитивности порождаемой группы подстановок в виде условия сильной связности специального отвечающего системе образующих ориентированного графа на множестве номеров колец вычетов в декартовом произведении. Формулируются необходимые и достаточные условия, при которых эта группа содержит знакопеременную группу.
Разложимые ветвящиеся процессы с двумя типами частиц
Authors: Vatutin Vladimir Alekseevich , Dyakonova Elena Evgen'evna
Published: February 2018

Рассматривается критический разложимый ветвящийся процесс Гальтона-Ватсона с двумя типами частиц, в котором частицы первого типа производят в конце жизни как потомков первого типа, так и потомков второго типа, а частицы второго типа порождают в момент гибели лишь потомков своего типа. В предположении, что распределение числа потомков у частицы каждого типа может иметь бесконечную дисперсию, найдена асимптотика хвоста распределения случайной величины $\Xi _{2}$ - совокупного числа частиц второго типа, появившихся в процессе до момента его вырождения. Доказаны предельные теоремы, описывающие (при $N\rightarrow \infty $) условное распределение числа частиц первого типа в различных поколениях, как при условии $\Xi _{2}=N$, так и при условии $\Xi _{2}>N.$
Мощности генерирующих множеств по операциям из классов решетки Поста
Authors: Komkov Stepan Alekseevich
Published: February 2018

Получены точные значения мощностей минимальных генерирующих множеств для всех декартовых степеней множества из двух элементов, рассматриваемых с произвольным множеством булевых операций из центральной части решетки Поста. Для множеств, содержащих операции из остальных классов решетки Поста, значения получены с точностью до единицы.
Вторая краевая задача в полуполосе для уравнения параболического
типа с оператором Бесселя и частной производной Римана-Лиувилля
Authors: Khushtova Fatima Gidovna
Published: February 2018

Исследуется вторая краевая задача в полуполосе для дифференциального
уравнения с оператором Бесселя и частной производной Римана-Лиувилля.
В терминах $H$-функции Фокса найдено представление решения в случае
нулевого начального условия. Единственность решения доказана в классе
функций, удовлетворяющих аналогу условия Тихонова.
Библиография: 19 названий.
О задаче Робена для эллиптических уравнений второго порядка в цилиндрических областях
Authors: Neklyudov Aleksey Vladimirivich
Published: February 2018

В полубесконечном цилиндре рассматривается
поведение обобщенных решений дивергентных эллиптических уравнений
второго порядка, удовлетворяющих на боковой поверхности цилиндра
третьему краевому условию.
Библиография: 10 названий.
Об определяемости смешанных абелевых групп своими полугруппами эндоморфизмов
Authors: Vildanov Vadim Kadirovich , Ljubimtsev Oleg Vladimirovich , Chistyakov Denis Sergeevich
Published: February 2018

В данной работе изучаются смешанные абелевы группы
с изоморфными полугруппами эндоморфизмов.
В частности, исследуется вопрос, когда из изоморфизма
полугрупп эндоморфизмов абелевых групп следует
изоморфизм самих групп.
Библиография: 13 названий.
Вложения пространств функций положительной гладкости
на нерегулярных областях в пространства Лебега
Authors: Besov Oleg Vladimirovich
Published: February 2018

В работе устанавливается теорема вложения пространств функций положительной
гладкости, определенных на нерегулярных областях $n$-мерного евклидова пространства,
в пространства Лебега. Формулировки теоремы зависят от геометрических параметров области определения функций.
Библиография: 10 названий.
Точные значения величины наилучшего приближения для комплекснозначных периодических функций
Authors: Ganzburg Michael Iosifovich
Published: February 2018

Теорема Секефальви-Надя о наилучшем приближении тригонометрическими полиномами в метрике $L_1$ обобщается на случай приближения некоторых комплекснозначных периодических функций. Полученный результат применяется для нахождения точных констант наилучшего приближения в метриках $L_1$ и $L_\infty$ на некоторых комплексных классах сверток. Для классов вещественнозначных сверток эти величины были найдены С. М. Никольским. В качестве примера данные результаты применяются для ядра Шварца и соответствующих классов сверток.
Библиография: 20 названий.
A Short History of Western Ideology
Authors: Petri Rolf
Published: February 2018

We are arguably living in a ‘postideological’ era. However, when we tune into the TV news we can hear political leaders talk about ‘advanced’ societies, geopolitical experts suggest ‘humanitarian’ interventions, and sober events presenters qualify a murder as ‘barbaric’. What does this mean? In this comprehensive book, Rolf Petri reveals how our everyday political language is full of ideological representations of the world, and places them in an accessible historical narration.From the secularization of Europe and the Enlightenment project of 'civilization' to the contemporary preoccupation with ecological catastrophes or the end of history, A Short History of Western Ideology carves out the central elements of western ideology. It focuses on a wide variety of issues including religion, colonialism, race and gender, which are essential for how we conceive of the modern world. By creating an awareness of the ideological character of the western worldview, its limits and its flaws, this book warns us of the dangers that derive from a self-righteous mindset. It is stimulating and important reading for history and politics students seeking to understand the ideology of the western world.
Drug-free remission: the goal of the future in management of patients with rheumatoid arthritis
Authors: Filipowicz-Sosnowska Anna
Published: February 2018

Management of patients with rheumatoid arthritis according to the “treat-to-target” strategy requires achievement of remission or low disease activity when remission cannot be achieved (mostly in patients with advanced disease). The assessment of remission and low disease activity is based on a number of definitions depending on the applied instruments which do not always correspond to one another.

The role of biomarkers and imaging techniques (ultrasound and magnetic resonance imaging) in predicting the risk for disease relapse after achieving remission and tapering disease-modifying antirheumatic drugs treatment are presented. The concept of achieving the full control of inflammation including residua synovial inflammation and drug free-remission is discussed.
Status of etoricoxib in the treatment of rheumatic diseases. Expert panel opinion
Authors: Kwiatkowska Brygida , Majdan Maria , Mastalerz-Migas Agnieszka , Niewada Maciej , Skrzydło-Radomańska Barbara , Mamcarz Artur
Published: February 2018

Pain is one of the most disabling symptoms of rheumatoid diseases. Patients with pain secondary to osteoarthritis (OA), rheumatoid arthritis (RA), ankylosing spondylitis (AS) or gout require effective analgesic treatment, and the physician’s task is to select a drug that is best suited for an individual patient. The choice of pharmacotherapy should be based both on drug potency and clinical efficacy, and its safety profile, particularly in the elderly population, as the number of comorbidities (and hence the risk of treatment complications and drug interactions) rises with age. In cases involving a high risk of gastrointestinal complications or concerns about hepatotoxicity, with a low cardiovascular risk, the first-line nonsteroidal anti-inflammatory drugs to consider should be coxibs including etoricoxib.
Antinuclear antibodies in autoimmune and allergic diseases
Authors: Grygiel-Górniak Bogna , Rogacka Natalia , Rogacki Michał , Puszczewicz Mariusz
Published: February 2018

Antinuclear antibodies (ANA) are primarily significant in the diagnosis of systemic connective tissue diseases. The relationship between their occurrence in allergic diseases is poorly documented. However, the mechanism of allergic and autoimmune diseases has a common thread. In both cases, an increased production of IgE antibodies and presence of ANA in selected disease entities is observed. Equally important is the activation of basophils secreting proinflammatory factors and affecting the differentiation of TH17 lymphocytes. Both autoimmune and allergic diseases have complex multi-pathogenesis and often occur in genetically predisposed individuals. The presence of antinuclear antibodies was confirmed in many systemic connective tissue diseases and some allergic diseases. Examples include atopic dermatitis, non-allergic asthma, and pollen allergy. Co-occurring allergic and autoimmune disorders induce further search for mechanisms involved in the aetiopathogenesis of both groups of diseases.
Morphea – selected local treatment methods and their effectiveness
Authors: Narbutt Joanna , Hołdrowicz Agnieszka , Lesiak Aleksandra
Published: February 2018

Localised scleroderma is an uncommon connective tissue disease of multifactorial aetiology occurring in the paediatric and adult population. It is relatively difficult to conduct any research on the subject of this disease entity treatment due to the low number of patients suffering from morphea, a tendency of the disease to remit spontaneously, and not yet well recognised aetiology. Hence, there has been developed no causal treatment of well-proven effectiveness, and schedules of symptomatic therapy are not yet clearly determined. The paper depicts most widely used topical treatment methods in morphea therapy, which due to minor risk of systemic adverse effects seem to be a beneficial therapeutic alternative. The main aim of this article was to analyse different topical treatment options used in localised scleroderma therapy and to indicate the most appropriate, safe, and effective one.
Organising pneumonia – the first manifestation of rheumatoid arthritis
Authors: Kalinova Desislava , Kolarov Zlatimir , Rashkov Rasho
Published: February 2018

Organising pneumonia (OP) is a distinct type of interstitial lung disease, because it can also be seen in association with several conditions such as infections, drugs, and connective tissue diseases. An association of OP with rheumatoid arthritis (RA) has also been described. Joint manifestations of RA usually precede lung involvements by several years; however, in less than 10% of cases of RA, interstitial lung disease may be the initial feature of RA. Organising pneumonia as the initial manifestation or developed simultaneously of RA is extremely rare, and its clinical features remain unknown. We present a 56-year-old woman with OP as the first manifestation of RA.
Integrated emission inventory and modeling to assess distribution of particulate matter mass and black carbon composition in Southeast Asia
Authors: Permadi Didin Agustian , Kim Oanh Nguyen Thi , Vautard Robert
Published: February 2018

Abstract. This is part of a research study addressing the potential co-benefits associated with selected black carbon (BC) emission reduction measures on mitigation of air pollution and climate forcing in Southeast Asia (SEA). This paper presents details of emission inventory (EI) results and WRF–CHIMERE model performance evaluation. The SEA regional emissions for 2007 were updated with our EI results for Indonesia, Thailand, and Cambodia and used for the model input. WRF–CHIMERE-simulated 2007 PM10, PM2.5, and BC over the SEA domain (0.25° × 0.25°) and the results were evaluated against the available meteorology and air quality monitoring data in the domain. WRF hourly simulation results were evaluated using the observed data at eight international airport stations in five SEA countries and showed a satisfactory performance. WRF–CHIMERE results for PM10 and PM2.5 showed strong seasonal influence of biomass open burning while the BC distribution showed the influence of urban activities in big SEA cities. Daily average PM10 constructed from the hourly concentrations were obtained from the automatic monitoring stations in three large SEA cities, i.e., Bangkok, Kuala Lumpur, and Surabaya, for model evaluation. The daily observed PM2.5 and BC concentrations obtained from the Improving Air Quality in Asian Developing Countries (AIRPET) project for four cities (i.e., Bangkok, Hanoi, Bandung, and Manila) were also used for model evaluation. In addition, hourly BC concentrations were taken from the measurement results of the Asian Pacific Network (APN) project at a suburban site in Bangkok. The modeled PM10 and BC satisfactorily met all suggested statistical criteria for PM evaluation. The modeled PM2.5∕PM10 ratios estimated for four AIRPET sites ranged between 0.47 and 0.59, lower than observed values of 0.6–0.83. Better agreement was found for BC∕PM2.5 ratios with the modeled values of 0.05–0.33 as compared to the observation values of 0.05–0.28. AODEM (extended aerosol optical depth module) was used to calculate the total columnar aerosol optical depth (AOD) and BC AOD up to the top of the domain at 500 hPa (∼ 5500 m), which did not include the free-tropospheric long-range transport of the pollution. The model AOD results calculated using the internal mixing assumption were evaluated against the observed AOD by both AERONET and MODIS satellite in 10 countries in the domain. Our model results showed that the BC AOD contributed 7.5–12 % of the total AOD, which was in the same range reported by other studies for places with intensive emissions. The results of this paper are used to calculate the regional aerosol direct radiative forcing under different emission reduction scenarios to explore potential co-benefits for air quality improvement, reduction in the number of premature deaths, and climate forcing mitigation in SEA in 2030 (Permadi et al., 2017a).
Fast time response measurements of particle size distributions in the 3–60 nm size range with the Nucleation Mode Aerosol Size Spectrometer
Authors: Williamson Christina , Kupc Agnieszka , Wilson James , Gesler David W. , Reeves J. Michael , Erdesz Frank , McLaughlin Richard , Brock Charles A.
Published: February 2018

Abstract. Earth's radiation budget is affected by new particle formation (NPF) and the growth of these nanometer-scale particles to larger sizes where they can directly scatter light or act as cloud condensation nuclei (CCN). Large uncertainties remain in the magnitude and spatiotemporal distribution of nucleation (less than 10 nm diameter) and Aitken (10–60 nm diameter) mode particles. Acquiring size-distribution measurements of these particles over large regions of the free troposphere is most easily accomplished with research aircraft. We report on the design and performance of an airborne instrument, the nucleation mode aerosol size spectrometer (NMASS), which provides size-selected aerosol concentration measurements that can be differenced to identify aerosol properties and processes or inverted to obtain a full size-distribution between 3 and 60 nm. By maintaining constant downstream pressure the instrument operates reliably over a large range of ambient pressures and during rapid changes in altitude, making it ideal for aircraft measurements from the boundary layer to the stratosphere. We describe the modifications, operating principles, extensive calibrations, and laboratory and in-flight performance of two NMASS instruments operated in parallel as a 10-channel battery of condensation particle counters (CPCs) in the NASA Atmospheric Tomography Mission (ATom) to investigate NPF and growth to cloud-active sizes in the remote free troposphere. An inversion technique to obtain a size distributions from the discrete channels of the NMASS is described and evaluated. Concentrations measured by the two NMASS instruments flying in parallel are self-consistent and also consistent with measurements made with an Optical Particle Counter. Extensive laboratory calibrations with a range of particle sizes and compositions show repeatability of the response function of the instrument to within 5–8 % and no sensitivity in sizing performance to particle composition. Particle number, surface area, and volume concentrations from the data inversion are determined to better than 20 % for typical particle size distributions. The excellent performance of the NMASS systems provides a strong analytical foundation to explore NPF around the globe in the ATom dataset.
The ENSO teleconnections to the Indian summer monsoon climate through the Last Millennium as simulated by the PMIP3
Authors: Tejavath Charan Teja , Ashok Karumuri , Chakraborty Supriyo , Ramesh Rengaswamy
Published: February 2018

Abstract. Using seven model simulations from the PMIP3, we study the mean summer (June–September) climate and its variability in India during the Last Millennium (LM; CE 850–1849) with emphasis on the Medieval Warm Period (MWP) and Little Ice Age (LIA), after validation of the simulated current day climate and trends. We find that the above (below) LM-mean summer global temperatures during the MWP (LIA) are associated with relatively higher (lower) number of concurrent El Niños as compared to La Niñas. The models simulate higher (lower) Indian summer monsoon rainfall (ISMR) during the MWP (LIA). This is notwithstanding a strong simulated negative correlation between the timeseries of NINO3.4 index and that of the area-averaged ISMR, Interestingly, the percentage of strong El Niños (La Niñas) causing negative (positive) ISMR anomalies is higher in the LIA (MWP), a non-linearity that apparently is important for causing higher ISMR in the MWP. Distribution of simulated boreal summer velocity potential at 850 hPa during MWP in models, in general, shows a zone of anomalous convergence in the central tropical Pacific flanked by two zones of divergence, suggesting a westward shift in the Walker circulation as compared to the simulations for LM as well as and a majority of historical simulations, and current day observed signal. The anomalous divergence centre in the west also extends into the equatorial eastern Indian Ocean, resulting in an anomalous convergence zone over India and therefore excess rainfall during the MWP as compared to the LM; the results are qualitative, given the inter-model spread.
A new moisture tagging capability in the Weather Research and Forecasting model: formulation, validation and application to the 2014 Great Lake-effect snowstorm
Authors: Insua-Costa Damián , Miguez-Macho Gonzalo
Published: February 2018

Abstract. A new moisture tagging
tool, usually known as water vapor tracer (WVT) method or online Eulerian
method, has been implemented into the Weather Research and Forecasting (WRF)
regional meteorological model, enabling it for precise studies on atmospheric
moisture sources and pathways. We present here the method and its
formulation, along with details of the implementation into WRF. We perform an
in-depth validation with a 1-month long simulation over North America at
20 km resolution, tagging all possible moisture sources: lateral boundaries,
continental, maritime or lake surfaces and initial atmospheric conditions. We
estimate errors as the moisture or precipitation amounts that cannot be
traced back to any source. Validation results indicate that the method
exhibits high precision, with errors considerably lower than 1 % during
the entire simulation period, for both precipitation and total precipitable
water. We apply the method to the Great Lake-effect snowstorm of
November 2014, aiming at quantifying the contribution of lake evaporation to
the large snow accumulations observed in the event. We perform simulations in
a nested domain at 5 km resolution with the tagging technique, demonstrating
that about 30–50 % of precipitation in the regions immediately downwind,
originated from evaporated moisture in the Great Lakes. This contribution
increases to between 50 and 60 % of the snow water equivalent in the most
severely affected areas, which suggests that evaporative fluxes from the
lakes have a fundamental role in producing the most extreme accumulations in
these episodes, resulting in the highest socioeconomic impacts.
Contributions to uncertainty related to hydrostratigraphic modeling using Multiple-Point Statistics
Authors: Barfod Adrian A. S. , Vilhelmsen Troels N. , Jørgensen Flemming , Christiansen Anders V. , Straubhaar Julien , Møller Ingelise
Published: February 2018

Abstract. Forecasting the flow of groundwater requires a hydrostratigraphic model, which describes the architecture of the subsurface. State-of-the-art Multiple-Point Statistical (MPS) tools are readily available for creating models depicting subsurface geology. We present a study of the impact of key parameters related to stochastic MPS simulation of a real-world hydrogeophysical dataset from Kasted Denmark using the snesim algorithm. The goal is to study how changes to the underlying datasets 5 propagate into the hydrostratigraphic realizations when using MPS for stochastic modeling. This study focuses on the sensitivity of the MPS realizations to the geophysical soft data, borehole lithology logs, and the Training Image (TI). The modeling approach used in this paper utilizes a cognitive geological model as a TI to simulate ensemble hydrostratigraphic models. The target model contains three overall hydrostratigraphic categories, and the MPS realizations are compared visually, as well as quantitatively using mathematical measures of similarity. The quantitative similarity analysis is carried 10 out exhaustively, and realizations are compared with each other as well as with the cognitive geological model. The results underline the importance of geophysical data for constraining MPS simulations. Relying only on borehole data and the conceptual geology or TI, results in a significant increase in realization uncertainty. The SkyTEM data used in this study cover a large portion of the Kasted model area, and are essential to the hydrostratigraphic architecture. On the other hand, the borehole lithology logs are sparse, and only 410 boreholes were present in this study. The borehole lithology logs 15 infer local changes in the immediate vicinity of the boreholes, thus providing limited large-scale structural information. Lithological information is, however, important for the interpretation of the geophysical responses. Finally, the importance of the TI was studied. An example was presented where an alternative geological model from a neighboring area was used to simulate hydrostratigraphic models. It was shown that as long as the geological setting are similar in nature, the realizations, although different, still reflect the hydrostratigraphic architecture. If a TI containing a biased geological conceptualization is 20 used, the resulting realizations will resemble the TI and contain less structure in particular areas, where the soft data show almost even probability to two or all three of the hydrostratigraphic units.