bluuebunny/crossref_metadata_2025_split huggingface dataset:
«БРИТАНИЯ» УИЛЬЯМА КЕМДЕНА В АТЛАСЕ МЕРКАТОРА-ХОНДИЯ?(1613), "Средние века"
Authors: Болдырева Наталья Андреевна 
Published: August 2018

Статья посвящена анализу текстовых описаний карт Британских островов в ­атласе Меркатора-Хондия (1613?г.), созданных Петром Монтаном из отрывков трудов нескольких авторов в начале XVII в. «Жанр» этих текстов в значительной степени оказался на пересечении с историко-топографическими и антикварными штудиями: читателям предоставляются самые разные сведения о государствах - от географического положения, особенностей административного и социально-политического деления и истории до мифических сказаний и легенд. Основным источником для ­составителя стал историко-топографический трактат Уильяма Кемдена «Британия», что обусловило ряд особенностей данных описаний.
СОРБЦИЯ ИОНОВ ЦИНКА НЕТКАНЫМ МАТЕРИАЛОМ ИЗ ПОЛИПРОПИЛЕНА, МОДИФИЦИРОВАННЫМ ПОЛИАКРИЛОВОЙ КИСЛОТОЙ, ПРИВИТОЙ К ПОВЕРХНОСТИ ВОЛОКНА: РОЛЬ ПЛОТНОСТИ ПРИВИВКИ И ВОДОРОДНЫХ СВЯЗЕЙ, "Высокомолекулярные соединения. Серия А"
Authors: Шейпак Т. М. , Горбачёв А. А. , Третинников О.Н. 
Published: August 2018

Получен микроволокнистый карбоксильный катионит путем фотоиндуцированной прививочной полимеризации акриловой кислоты на поверхности нетканого материала из полипропилена. Методом ИК-фурье-спектроскопии нарушенного полного внутреннего отражения исследовано изменение количества привитого полимера (плотности прививки) и водородных связей между его карбоксильными группами в зависимости от времени полимеризации. Изучены сорбционные свойства полученного ионита в кислой (СООН) и солевой (СООNa) формах по отношению к ионам Zn2+ при различной плотности прививки. Сорбционная емкость исследуемого катионита в солевой форме выше, чем в кислой, причем это различие быстро усиливается с ростом плотности прививки. При помощи данных ИК-спектроскопии выявлено, что такое поведение обусловлено образованием более сильных водородных связей между группами СООН привитой полиакриловой кислоты при увеличении плотности прививки, что затрудняет ионизацию этих групп и, соответственно, препятствует ионному обмену.
ПОЛУЧЕНИЕ НАНОВОЛОКОН ИЗ АРОМАТИЧЕСКОГО ПОЛИИМИДА И МАТЕРИАЛОВ НА ИХ ОСНОВЕ ДЛЯ КЛЕТОЧНЫХ ТЕХНОЛОГИЙ, "Высокомолекулярные соединения. Серия А"
Authors: Матреничев В. В. , Попрядухин П.В. , Склизкова В.П. , Светличный В.М. , Крюков А. Е. , Смирнова Н.В. , Иванькова Е.М. , Попова Е.Н. , Добровольская И.П. , Юдин В.Е. 
Published: August 2018

Методом электроформования растворов полиамидокислоты на основе диангидрида 3,3 ,4,4 -дифенил тетракарбоновой кислоты и о-толидина в смеси растворителей N,N-диметилацетамид-бензол получены нановолокна диаметром от 100 до 300 нм. Термическая обработка нановолокнистого материала из полиамидокислоты приводит к образованию нановолокон ароматического полиимида диаметром от 100 до 200 нм. Температура начала терморазложения полиимидных нановолокон в атмосфере аргона составляет 537 °С. Методом сканирующей электронной микроскопии показано, что материал на основе нановолокон из ароматического полиимида сохраняет эластические свойства вплоть до температуры жидкого азота. Полученный материал характеризуется отсутствием цитотоксичности - фибробласты человека, культивируемые на нем, обладают высокой пролиферативной активностью.
ОСОБЕННОСТИ ПРИМЕНЕНИЯ ПОЛИМЕРНЫХ ПРОИЗВОДНЫХ ИНСУЛИНА, "Высокомолекулярные соединения. Серия А"
Authors: Валуев И.Л. , Обыденнова И.В. , Ванчугова Л.В. , Валуев Л.И. 
Published: August 2018

Используя полимерную модель тонкого кишечника, в работе показано, что зависимость эффективности действия препарата Рансулин от размеров животного обусловлена различным диаметром тонкого кишечника и повышенным ферментативным гидролизом инсулина в процессе его диффузии из кишечника с большим диаметром. В отличие от подкожных инъекций при пероральном введении препаратов инсулин первоначально накапливается в печени и только затем поступает в кровоток, т.е. реализуется физиологический путь секреции инсулина.
ГЛЮКОЗОЧУВСТВИТЕЛЬНЫЕ ГИДРОГЕЛИ ДЛЯ КОНТРОЛИРУЕМОГО ВЫДЕЛЕНИЯ ИНСУЛИНА, "Высокомолекулярные соединения. Серия А"
Authors: Валуев Л.И. , Валуев И.Л. , Ванчугова Л.В. , Обыденнова И.В. 
Published: August 2018

Сополимеризацией акриламида с N-(2-D-глюкоз)акриламидом и N,N-метиленбисакриламидом в присутствии конканавалина А и меркаптоуксусной кислоты синтезированы гидрогели с повышенным содержанием мелких пор. При увеличении концентрации глюкозы в окружающей среде гидрогели самопроизвольно выделяют предварительно введенный в них инсулин аналогично поджелудочной железе по двустадийному механизму с максимальной скоростью на первом этапе.
ОСЦИЛЛИРУЮЩИЙ СПАД СВОБОДНОЙ ИНДУКЦИИ В ПОЛИМЕРНЫХ СИСТЕМАХ: ТЕОРЕТИЧЕСКИЙ АНАЛИЗ, "Высокомолекулярные соединения. Серия А"
Authors: Пестряев Е.М. 
Published: August 2018

Показано, что при выводе преобразования Андерсона-Вейсса для рептирующей полимерной цепи спиновую систему можно разделить на две подсистемы: эргодическую - флуктуирующую и неэргодическую - квазистатическую, в результате чего выражение для спада свободной индукции факторизуется. Сомножитель с флуктуирующим диполь-дипольным взаимодействием для произвольного времени корреляции трансформируется в обобщенную экспоненту Андерсона-Вейсса. Сомножитель с квазистатическим диполь-дипольным взаимодействием в изотропном расплаве трансформируется в осциллирующий фурье-образ пейковского дублета. Окончательное выражение позволяет описать форму спада свободной индукции в полимерном расплаве как функцию молекулярной массы и температуры ниже температуры квазистатичности примитивных сегментов. Оно также дает возможность рассчитать температурный интервал, в котором возможны осциллирующие спады свободной индукции в расплаве полиизопрена. Кроме того, использованный подход качественно описывает осциллирующий спад свободной индукции в частично кристаллическом полиэтилене.
Performance characteristics and quality assurance considerations for displays used in interventional radiology and cardiac catheterization facilities
Authors: Silosky Michael S. , Marsh Rebecca M. 
Published: August 2018

AbstractPurposeWhile the performance of displays used for the acquisition and primary interpretation of medical images has been well‐characterized, notably absent are publications evaluating and discussing the performance of displays used in Interventional Radiology (IR) suites and Cardiac Catheterization (CC) laboratories. The purpose of this work was to evaluate the performance of these displays and to consider the challenges in implementation of display quality assurance practices in this environment.MethodsTen large format displays used in IR and CC suites were evaluated. A visual inspection of available test patterns was performed followed by a quantitative evaluation of several performance characteristics including luminance ratio, luminance response function, and luminance uniformity. Additionally, the local ambient lighting conditions were evaluated.ResultsLuminance ratios ranged from 243.0 to 1182.1 with a mean value of 500.1 ± 289.2. The maximum deviation between the luminance response function and the DICOM Grayscale Standard Display Function ranged from 11.2% to 38.3% with a mean value of 26.2% ± 10.9%. When evaluating luminance uniformity, the mean maximum luminance deviation was 13.2% ± 3.5%. The mean value of luminance deviation from the median was 7.8% ± 1.0%. Measured values of background illuminance ranged from 29.1 to 310.0 lux with a mean value of 107.6 lux ± 80.4 lux. While no mura or bad pixels were observed during visual inspection, damage including scrapes and scratches as well as smudges was common to most of the displays.ConclusionThis work provides much needed data for the characterization of the performance of the large format displays used in IR and CC laboratory suites. These data may be used as a point of comparison when implementing a display QA program.
Relationship of Cigarette Smoking and Alcohol Consumption to Incidence of Systemic Lupus Erythematosus in a Prospective Cohort Study of Black Women
Authors: Cozier Yvette C. , Barbhaiya Medha , Castro‐Webb Nelsy , Conte Carolyn , Tedeschi Sara K. , Leatherwood Cianna , Costenbader Karen H. , Rosenberg Lynn 
Published: August 2018

ObjectiveSystemic lupus erythematosus (SLE) affects black women more frequently than other racial/gender groups. In past studies, largely consisting of white and Asian cohorts, cigarette smoking was associated with increased SLE risk, and moderate alcohol consumption was associated with decreased SLE risk. The aim of this study was to assess associations of smoking and alcohol consumption with the risk of incident SLE among black women, using data from a long‐term, prospective, follow‐up study.MethodsThe Black Women's Health Study enrolled 59,000 black women in 1995 and collected data on demographics, health status, and medical and lifestyle variables. Follow‐up questionnaires that were given every 2 years identified incident disease and updated risk factors. Cases of incident SLE that met the American College of Rheumatology revised criteria for SLE as updated in 1997 were confirmed through medical record review. Cox regression models were used to estimate hazard ratios (HRs) and 95% confidence intervals (95% CI) for associations of cigarette smoking and alcohol intake with incidence of SLE.ResultsA total of 127 incident SLE cases from 1995 to 2015 (mean age 43 years at diagnosis) were confirmed. Compared to never smokers, the risk of SLE among ever smokers was elevated, but not significantly (HR 1.45 [95% CI 0.97–2.18]). Risk was similar for current and past smoking and increased nonsignificantly with increasing pack‐years. The HR was 0.71 (95% CI 0.45–1.12) for current drinking relative to never drinking, with a HR of 0.43 (95% CI 0.19–0.96) for ≥4 drinks/week.ConclusionFindings from this large study of SLE risk among black women are consistent with previous results from studies in other populations of increased risk of SLE associated with cigarette smoking and decreased risk with moderate alcohol consumption.
3D Printed Stem‐Cell Derived Neural Progenitors Generate Spinal Cord Scaffolds
Authors: Joung Daeha , Truong Vincent , Neitzke Colin C. , Guo Shuang‐Zhuang , Walsh Patrick J. , Monat Joseph R. , Meng Fanben , Park Sung Hyun , Dutton James R. , Parr Ann M. , McAlpine Michael C. 
Published: August 2018

AbstractA bioengineered spinal cord is fabricated via extrusion‐based multimaterial 3D bioprinting, in which clusters of induced pluripotent stem cell (iPSC)‐derived spinal neuronal progenitor cells (sNPCs) and oligodendrocyte progenitor cells (OPCs) are placed in precise positions within 3D printed biocompatible scaffolds during assembly. The location of a cluster of cells, of a single type or multiple types, is controlled using a point‐dispensing printing method with a 200 µm center‐to‐center spacing within 150 µm wide channels. The bioprinted sNPCs differentiate and extend axons throughout microscale scaffold channels, and the activity of these neuronal networks is confirmed by physiological spontaneous calcium flux studies. Successful bioprinting of OPCs in combination with sNPCs demonstrates a multicellular neural tissue engineering approach, where the ability to direct the patterning and combination of transplanted neuronal and glial cells can be beneficial in rebuilding functional axonal connections across areas of central nervous system (CNS) tissue damage. This platform can be used to prepare novel biomimetic, hydrogel‐based scaffolds modeling complex CNS tissue architecture in vitro and harnessed to develop new clinical approaches to treat neurological diseases, including spinal cord injury.
Visible Light‐Mediated Trifluoromethylation of Fluorinated Alkenes via C−F Bond Cleavage
Authors: Wu Liu‐Hai , Cheng Jun‐Kee , Shen Liang , Shen Zhi‐Liang , Loh Teck‐Peng 
Published: August 2018

AbstractA convenient photoredox‐catalyzed defluorinative trifluoromethylation of α‐trifluoromethyl alkenes and gem‐difluoroalkenes is developed. The reactions proceeded efficiently via trifluoromethyl radical addition followed by β‐fluorine elimination process, providing a new entry to multifluorinated alkenes in moderate to good yields with excellent stereoselectivity.magnified image
Fast Diffusion of Multivalent Ions Facilitated by Concerted Interactions in Dual‐Ion Battery Systems
Authors: Li Hongyi , Okamoto Norihiko L. , Hatakeyama Takuya , Kumagai Yu , Oba Fumiyasu , Ichitsubo Tetsu 
Published: August 2018

AbstractSluggish solid‐phase diffusion has been an essential issue in developing intercalation electrode materials using multivalent ions. Compared to monovalent Li ions, the diffusion of multivalent ions is still not well understood. Here, combining first‐principles calculations with electrochemical experiments, it is shown that the diffusion of divalent Mg ions is significantly facilitated in Li–Mg dual‐ion systems, and the activation energy is remarkably reduced by the concerted interactions of the preceding Li ions and following Mg ions. Thus, making dual‐ion systems is a promising way to construct high‐energy‐density, rechargeable batteries with multivalent ions. This work will provide a new perspective on solid‐phase diffusion that is typically a rate‐controlling process in battery systems and fuel cell devices.
Lignin Laser Lithography: A Direct‐Write Method for Fabricating 3D Graphene Electrodes for Microsupercapacitors
Authors: Zhang Wenli , Lei Yongjiu , Ming Fangwang , Jiang Qiu , Costa Pedro M. F. J. , Alshareef Husam N. 
Published: August 2018

AbstractIn this work, a simple lignin‐based laser lithography technique is developed and used to fabricate on‐chip microsupercapacitors (MSCs) using 3D graphene electrodes. Specifically, lignin films are transformed directly into 3D laser‐scribed graphene (LSG) electrodes by a simple one‐step CO2 laser irradiation. This step is followed by a water lift‐off process to remove unexposed lignin, resulting in 3D graphene with the designed electrode patterns. The resulting LSG electrodes are hierarchically porous, electrically conductive (conductivity is up to 66.2 S cm−1), and have a high specific surface area (338.3 m2 g−1). These characteristics mean that such electrodes can be used directly as MSC electrodes without the need for binders and current collectors. The MSCs fabricated using lignin laser lithography exhibit good electrochemical performances, namely, high areal capacitance (25.1 mF cm−2), high volumetric energy density (≈1 mWh cm−3), and high volumetric power density (≈2 W cm−3). The versatility of lignin laser lithography opens up the opportunity in applications such as on‐chip microsupercapacitors, sensors, and flexible electronics at large‐scale production.
Nido‐Carboranes: Donors for Thermally Activated Delayed Fluorescence
Authors: Nghia Nguyen Van , Jana Saibal , Sujith Surendran , Ryu Ji Yeon , Lee Junseong , Lee Sang Uck , Lee Min Hyung 
Published: August 2018

AbstractAn approach to the design of nido‐carborane‐based luminescent compounds that can exhibit thermally activated delayed fluorescence (TADF) is proposed. 7,8‐Dicarba‐nido‐undecaboranes (nido‐carboranes) having various 8‐R groups (R=H, Me, i‐Pr, Ph) are appended to the meta or para position of the phenyl ring of the dimesitylphenylborane (PhBMes2) acceptor, forming donor–acceptor compounds (nido‐m1–m4 and nido‐p1–p4). The bulky 8‐R group and meta substitution of the nido‐carborane are essential to attain a highly twisted arrangement between the donor and acceptor moieties, leading to a very small energy splitting between the singlet and triplet excited states (ΔEST <0.05 eV for nido‐m2, ‐m3, and ‐p3). These compounds exhibit efficient TADF with microsecond‐range lifetimes. In particular, nido‐m2 and ‐m3 display aggregation‐induced emission (AIE) with TADF properties.
Novel Optimal Design Approach for Output‐Feedback H∞ Control of Vehicle Active Seat‐Suspension System
Authors: Wei Chunyu , Cai Yue , Zhang Ke , Wang Zhan , Yu Wenda 
Published: August 2018

AbstractIn this paper, the output‐feedback control problem of a vehicle active seat‐suspension system is investigated. A novel optimal design approach for an output‐feedback H∞ controller is proposed. The main objective of the controller is to minimize the seat vertical acceleration to improve vehicle ride comfort. First, the human body and the seat are considered in the modeling of a vehicle active suspension system, which makes the model more precise. Other constraints, such as tire deflection, suspension deflection and actuator saturation, are also considered. Then the output‐feedback control strategy is adopted since some state variables, such as body acceleration and body deflection, are unavailable. A concise and effective approach for an output‐feedback H∞ optimal control is presented. The desired controller is obtained by solving the corresponding linear matrix inequalities (LMIs) and by the calculation of equations proposed in this paper. Finally, a numerical example is presented to show the effectiveness and advantages of the proposed controller design approach.
Unveiling the structure of a novel artificial heme‐enzyme with peroxidase‐like activity: A theoretical investigation
Authors: Perrella Fulvio , Raucci Umberto , Chiariello Maria Gabriella , Chino Marco , Maglio Ornella , Lombardi Angela , Rega Nadia 
Published: August 2018

AbstractFe(III)‐Mimochrome VI (MC6) is a recently reported artificial heme‐peptide conjugate system with a high peroxidase‐like activity. By design, its structure features a five‐coordinated Fe(III)‐deuteroporphyrin active site, embedded in a compact α‐helix–heme–α‐helix “sandwich” motif. Up to now, no detailed MC6 structural characterization is available. In this work we propose a theoretical investigation based on molecular dynamics (MD) simulations and hybrid quantum mechanics/molecular mechanics (QM/MM) optimizations, aimed to shed light on several Fe(III)‐MC6 structural features and to validate the de novo designed fold. Key structural elements were analyzed to achieve indirect insight relevant to understand Fe(III)‐MC6 catalytic performances in solution. Extensive MD simulations showed a partial stability of the “sandwich” fold in water solution. The smaller peptide chain bonded to the heme revealed a high conformational freedom, which promoted the exposition of the heme distal side to the solvent. Regarding the accessibility of water molecules, even in Fe(III)‐MC6 “closed” structure the heme cavity appeared hydrated, suggesting an easy accessibility by exogenous ligands. Fe(III)‐MC6 structure in both high and low spin states was then further characterized through hybrid QM/MM optimizations. In particular, an accurate description of the active site structure was obtained, allowing a direct comparison of Fe(III)‐MC6 coordination environment with that observed in the Horseradish Peroxidase crystal structures. Our results suggest a structural similarity between Fe(III)‐MC6 and the natural enzyme. This study supports the interpretation of data from experimental Fe(III)‐MC6 structural and functional characterization and the rational design of new artificial mimics with improved catalytic performances.
Nationwide population-based study of trends and regional variation in breast-conserving treatment for breast cancer
Authors: van Maaren M C , Strobbe L J A , Koppert L B , Poortmans P M P , Siesling S 
Published: August 2018

AbstractBackgroundLandmark trials have shown breast-conserving surgery (BCS) combined with radiotherapy to be as safe as mastectomy in breast cancer treatment. This population-based study aimed to evaluate trends in BCS from 1989 to 2015 in nine geographical regions in the Netherlands.MethodsAll women diagnosed between 1989 and 2015 with primary T1–2 N0–1 breast cancer, treated with BCS or mastectomy, were identified from the Netherlands Cancer Registry. Crude and case mix-adjusted rates of BCS were evaluated and compared between nine Dutch regions for two time intervals: 1989–2002 and 2003–2015. The annual percentage change in BCS per region over time was assessed by means of Joinpoint regression analyses. Explanatory variables associated with the choice of initial surgery were evaluated using multivariable logistic regression.ResultsA total of 202 934 patients were included, 82 200 treated in 1989–2002 and 120 734 in 2003–2015. During 1989–2002, the mean rate of BCS was 50·6 per cent, varying significantly from 39·0 to 71·7 per cent between the nine regions. For most regions, a marked rise in BCS was observed between 2002 and 2003. During 2003–2015, the mean rate of BCS increased to 67·4 per cent, but still varied significantly between regions from 58·5 to 75·5 per cent. A significant variation remained after case-mix correction.ConclusionThis large nationwide study showed that the use of BCS increased from 1989 to 2015 in the Netherlands. After adjustment for explanatory variables, a large variation still existed between the nine regions. This regional variation underlines the need for implementation of a uniform treatment and decision-making strategy.
Energy‐Efficiency Evaluation of Gas Sweetening Based on Yield‐Energy‐Selectivity Indicators
Authors: Gu Xiaohua , Qiu Kui , Kuai Jiajian , Weng Junli , Fan Zhong , Zhang Kun 
Published: August 2018

AbstractThe high‐sulfur gas sweetening process is energy consuming. To analyze its energy efficiency effectively, and look for ways to improve this process, a novel energy‐efficiency evaluation method based on the yield‐energy‐selectivity and efficiency coefficient methods was proposed. First, the yield, energy, and selectivity are selected as evaluation indicators to establish the yield‐energy‐selectivity evaluation model. Then, the coefficient and score of each indicator were determined by using the analytical hierarchy process and efficacy coefficient method, respectively. Finally, the proposed energy‐efficiency evaluation method was applied to the actual high‐sulfur gas sweetening process. The evaluation results were in good agreement with those obtained by actual experiences.
Nucleophilic‐Addition‐Initiated Ring Expansion and Selectivity in Anionic Fragmentation
Authors: Reyes Loya David , De Paolis Michaël 
Published: August 2018

AbstractThe expansion of rings into larger ones by a mechanism of anionic fragmentation is a potent tool for exploring new structural space in a concise manner. As the concept has been known and applied for decades now, going a step further calls for selectivity in the production of new scaffolds. In this regard, recent results demonstrated promising levels of regio‐, dia‐ and enantioselectivity which give impulses to the concept of ring expansion involving the fragmentation of anionic species generated from unstrained cycles. Initiated by addition of a nucleophile, the energy received in the form of electrons triggered skeletal rearrangements of simple starting materials while revealing new stereocenters and/or regioisomers. Disrupting the symmetry of smaller rings in some cases, the strategy gives access to complex larger rings.
Postfunctionalization of Tris(pyridyl) Aluminate Ligands: Chirality, Coordination, and Supramolecular Chemistry
Authors: García‐Romero Álvaro , Plajer Alex J. , Álvarez‐Miguel Lucía , Bond Andrew D. , Wright Dominic S. , García‐Rodríguez Raúl 
Published: August 2018

AbstractPostfunctionalization of the aluminate anion [EtAl(6‐Me‐2‐py)3]− (1) (2‐py=2‐pyridyl) with alkoxide ligands can be achieved by the selective reactions of the lithium salt 1 Li with alcohols in the appropriate stoichiometry. This method can be used to introduce 3‐ and 4‐py functionality in the form of 3‐ and 4‐alkoxymethylpyridyl groups, while maintaining the integrity of the aluminate framework, thereby giving entry to new supramolecular chemistry. Chirality can be introduced either by using a chiral alcohol as a reactant or by the stepwise reaction of 1 Li with two different nonchiral alcohols. The latter route has allowed the synthesis of a rare example of a chiral‐at‐aluminium aluminate.