bluuebunny/crossref_metadata_2025_split huggingface dataset:
ОПРЕДЕЛЕНИЕ АДСОРБАТОВ НА ПОВЕРХНОСТИ ПОЛИМЕРА С НИЗКОЙ СОРБЦИОННОЙ ЕМКОСТЬЮ ПРИ ПОМОЩИ ТЕРМОЛИНЗОВОЙ СПЕКТРОМЕТРИИ, "Журнал аналитической химии"
Authors: Недосекин Д.А. , Михеев И.В. , Волков Д.С. , Проскурнин М.А. 
Published: August 2018

Термолинзовая спектрометрия в коаксиальном варианте применена для прямого определения адсор­батов на планарной поверхности полиэтилентерефталата (ПЭТФ). На примере исследования адсорб­ции трис(1,10-фенантролината) железа(II) на поверхности ПЭТФ показана возможность прямого измерения скорости адсорбции из растворов и определения параметров адсорбированного слоя. Изотерма адсорбции трис(1,10-фенантролината) железа(II) на поверхности ПЭТФ описывается уравнением Ленгмюра и линейна в интервале концентраций в растворе от 0.02 до 0.7 мМ. Метод расчета теплового возмущения в поверхностно-поглощающих твердых телах использован для практической интерпретации результатов исследования адсорбции, показана возможность определения трис(1,10-фенантролината) железа(II) на поверхности на уровне менее монослоя. Термолинзовая спектрометрия позволяет определить поглощение поверхностного слоя на уровне до 5 10-5 единиц оптической плотности, что соответствует поверхностной концентрации трис(1,10-фенантролината) железа(II) 2 10-13 моль/см2. На примере исследования адсорбции 4-(2-пиридилазо)резорцина на поверхности ПЭТФ показано, что в случае сильного поглощения поверхностного слоя возможно протекание процессов термодеструкции вещества и деформации подложки. Локальное повышение температуры в слое также подтверждено теоретическими расчетами.
МНОГОЛЕТНЯЯ ДИНАМИКА ЗИМНЕГО НАСЕЛЕНИЯ ЛЕСНЫХ ПТИЦ ИЛЬМЕНСКОГО ЗАПОВЕДНИКА, "Экология"
Authors: Захаров В.Д. 
Published: August 2018

Приведены данные зимних количественных учетов птиц в лесных местообитаниях Ильменского заповедника с 1986 по 2010 г. Проанализированы изменения среднемесячных, максимальных и минимальных температур и количества осадков в декабре-феврале. Тренд потепления за период исследований на территории заповедника не выявлен. Показано, что динамика структуры населения птиц в зимний период, несмотря на значительные межгодовые флуктуации, погодными условиями не определяется. Наиболее значимыми факторами, обусловливающими многолетнюю динамику численности зимующих птиц, являются: плотность населения в предыдущий гнездовой период, урожайность семян основных кормовых растений, подкочевка зимующих видов.
СТРОНЦИЕВАЯ ИЗОТОПНАЯ ХЕМОСТРАТИГРАФИЯ: ОСНОВЫ МЕТОДА И ЕГО СОВРЕМЕННОЕ СОСТОЯНИЕ, "Стратиграфия. Геологическая корреляция"
Authors: Кузнецов А.Б. , Семихатов М.А. , Горохов И.М. 
Published: August 2018

Рассмотрены методическая основа, становление и современное состояние нового метода хроностратиграфических исследований - стронциевой изотопной хемостратиграфии (strontium isotope stratigraphy - SIS). Этот метод позволяет датировать и коррелировать географически удаленные осадочные последовательности, не привлекая биостратиграфические и изотопно-геохронологические данные. Метод SIS опирается на вековые вариации отношения 87Sr/86Sr в палеоокеанах, возникавшие в результате перераспределения роли двух глобальных потоков стронция, сформированных в мантийном и континентальном резервуарах Земли. Изотопная гомогенность Sr в палеоокеанах и в сообщавшихся с ними морях приводит к тому, что величина отношения 87Sr/86Sr в морских бассейнах индивидуальна для каждого момента геологического времени и наследуется в морских хемогенных осадках при осаждении растворенного Sr в виде изоморфной примеси. Наилучшим минералом, способным сохранять Sr-изотопную характеристику среды седиментации, является низкомагнезиальный кальцит, а также фрагменты фоссилизированных палеонтологических остатков, захороненных in situ. При использовании метода SIS необходимы геохимическая диагностика вторичных преобразований исследуемого материала и селективное растворение образцов для получения карбонатного материала, адекватно отражающего изотопные характеристики среды седиментации. Приведен ряд примеров межрегиональной корреляции протерозойских и кайнозойских морских отложений и их привязки к стратиграфической шкале на методической основе SIS.
К ВОПРОСУ О СТРАТИГРАФИИ И ФЛОРЕ МЕЛОВЫХ ОТЛОЖЕНИЙ ЧУЛЫМО-ЕНИСЕЙСКОГО РАЙОНА, ЗАПАДНАЯ СИБИРЬ, "Стратиграфия. Геологическая корреляция"
Authors: Щепетов С.В. 
Published: August 2018

Рассмотрены стратиграфическое положение и обоснование возраста сертинской, чулымской, антибесской и сымской палеофлор. Показано, что эти древние флоры, скорее всего, не сменяли друг друга в процессе развития, а существовали одновременно в геологическом масштабе времени. Кийская, симоновская и сымская свиты не имеют четких стратиграфических границ, выраженных картировочных признаков и надежного палеонтологического обоснования возраста. Их следует рассматривать как единое стратиграфическое подразделение.
New Sufficient Conditions for Finite Time Stability of Nonlinear Time Delay Systems
Authors: Chen Guopei , Yang Ying 
Published: August 2018

AbstractIn this note, we propose two new sufficient conditions on finite time stability for nonlinear time delay systems. First, a sufficient condition is proposed to verify the stability of systems by employing a continuously differentiable Lyapunov‐Krasovskii functional with indefinite derivative. Second, another sufficient condition is proposed by extending the Razumikhin approach, moreover, the corresponding estimate on convergence time of systems is also given. The results obtained herein are less conservative than the existing methods, i.e., they relax the restriction that the Lyapunov function of systems has to be decreasing in the convergence process. Finally, two numerical examples are provided to show the effectiveness of the theoretical results.
Executive function predicts the visuospatial working memory in autism spectrum disorder and attention‐deficit/hyperactivity disorder
Authors: Wang Zengjian , Jing Jin , Igarashi Kazue , Fan Lijun , Yang Siyuan , Li YongMei , Jin Yu 
Published: August 2018

Children with autism spectrum disorder (ASD) and those with attention deficit/hyperactivity disorder (ADHD) always show working memory deficits. However, research findings on the factors that affected the working memory in ASD and ADHD were inconsistent. Thus, we developed the present study to investigate the association of executive function (EF) with the visuospatial working memory (VSWM) in ASD and ADHD. Three groups of participants were examined: 21 children with ASD, 28 children with ADHD and 28 typically developing (TD) children as the controls. All participants completed two tests: the Wisconsin Card Sorting Test (WCST) and the Corsi Block Tapping Test for measuring EF and VSWM, respectively. The WCST included four domains: categories achieved (CA), perseverative errors (PE), failures to maintain set (FMS), and total errors (TE). The findings indicated that (1) the ASD group showed poorer performance in VSWM than the ADHD and TD groups; (2) for the ASD group, VSWM was positively correlated with CA, and was negatively correlated with PE and TE; (3) for the ADHD group, FMS showed a negative relationship with VSWM; and (4) TE predicted the performance of VSWM in ASD group, while FMS predicted VSWM in ADHD group. The study results suggested that VSWM was impaired in ASD but not in ADHD. Also, the EF domains were differently correlated with the VSWM performance in ASD and ADHD. Our study suggests that we should consider different intervention targets of working memory and EF contributions in improving the cognitive capacity of ASD and ADHD. Autism Res 2018, 11: 1148–1156. © 2018 International Society for Autism Research, Wiley Periodicals, Inc.Lay summaryThe present study compared the visuospatial working memory (VSWM) in three groups of children: autism (ASD), attention deficit/hyperactivity disorder (ADHD), and typically developed children (TD). The ASD group showed poorer VSWM than the ADHD and TD groups. The total error of executive function predicted the performance of VSWM in ASD, while failures to maintain set predicted VSWM in ADHD . These findings suggested that we should consider the different working memory and executive function training targets to increase cognitive capacity of ASD and ADHD.
Cryptotanshinone suppresses cell proliferation and glucose metabolism via STAT3/SIRT3 signaling pathway in ovarian cancer cells
Authors: Yang Yufei , Cao Yue , Chen Lihua , Liu Fei , Qi Zihao , Cheng Xi , Wang Ziliang 
Published: August 2018

AbstractOvarian cancer is the most malignant gynecologic cancer among women worldwide. Cryptotanshinone (CT), isolated from Salvia miltiorrhiza Bunge, has been identified as a potential therapeutic agent in treating several malignant tumors, but the molecular mechanism of CT in ovarian cancer still remains illustrated. Here, we sought to elucidate the regulatory function of CT on cell glucose metabolism in ovarian cancer. The treatment of CT on ovarian cancer cells effectively inhibited glucose uptake and lactate production in ovarian cancer cells. The expression levels of glycolysis‐related proteins, such as GLUT1, LDHA, and HK2, were decreased by the treatment of CT detected by qRT‐PCR and immunoblotting. Mechanistically, CT exerted its anti‐tumor effect by targeting STAT3/SIRT3/HIF‐1α signaling pathway in vitro and in vivo, which could be rescued by the introduction of SIRT3 shRNA in ovarian cancer cells. The clinical data showed that the expression level of STAT3 in ovarian cancer patients’ sera and tissues was positively correlated with those of GLUT1, LDHA, HK2 and HIF‐1α, but negatively with that of SIRT3These findings provide evidence that CT inhibited cellular glycolysis‐induced cell growth and proliferation through repression of STAT3/SIRT3/HIF‐1α signaling pathway, indicating that CT may be developed as a chemotherapeutic agent to treat ovarian cancer.
miR‐182‐5p overexpression inhibits chondrogenesis by down‐regulating PTHLH
Authors: Bai Ming , Yin Heping , Zhao Jian , Li Yang , Wu Yimin 
Published: August 2018

AbstractHuman bone marrow mesenchymal stem cells (hBM‐MSC) have the ability of differentiating into chondrocytes and osteoblasts. miR‐182‐5p promotes osteoclastogenesis and bone metastasis by up‐regulating the expression of parathyroid hormone‐like hormone (PTHLH). However, the function of miR‐182‐5p in chondrogenesis is still unknown. Mimic or inhibitor of miR‐182‐5p was used to upregulate or knock‐down miR‐182‐5p expression, respectively. We analyzed chondrogenesis by Safranin O staining and Blyscan™ Sulfated Glycosaminoglycan Assay. Immunohistochemistry, real‐time PCR, and Western bolts were used to detect related makers. miR‐182‐5p overexpression inhibited chondrogenesis. Dual‐luciferase reporter assay indicated that PTHLH was one of the target genes of miR‐182‐5p. Further studies showed that miR‐182‐5p overexpression down‐regulated the expression of SOX‐9 and COL2A1, but up‐regulated COL1A1 and COL10A1. Consistently, miR‐182‐5p knock‐down had the opposite effects. This effect of miR‐182‐5p in BM‐MSCs can be rescued by PTHLH overexpression. miR‐182‐5p may play a negative role in chondrogenesis by down‐regulating PTHLH.
Dynamic Performance of a Complex Distillation System to Separate a Five‐Component Hydrocarbon Mixture
Authors: Segovia Hernández Juan Gabriel , Gómez-Castro Fernando Israel , Sánchez-Ramírez Eduardo 
Published: August 2018

AbstractDistillation is one of the most used separation processes in chemical industry, although it is a highly energy‐intensive operation. For multicomponent distillation, complex structures have been proposed in previous works, which may allow energy savings. Nevertheless, it is mandatory to understand the dynamic characteristics of such complex structures. In this work, the dynamic performance of a dividing‐wall‐based structure for the separation of a five‐component mixture is studied. A sensitivity analysis is performed on the structure in terms of the interlinking streams, performing a singular value decomposition analysis to selected cases with different operational conditions. The designs with the lowest energy duties also showed the best open‐loop properties.
Variable selection for recurrent event data with broken adaptive ridge regression
Authors: Zhao Hui , Sun Dayu , Li Gang , Sun Jianguo 
Published: August 2018

AbstractRecurrent event data occur in many areas such as medical studies and social sciences and a great deal of literature has been established for their analysis. On the other hand, only limited research exists on the variable selection for recurrent event data, and the existing methods can be seen as direct generalizations of the available penalized procedures for linear models and may not perform as well as expected. This article discusses simultaneous parameter estimation and variable selection and presents a new method with a new penalty function, which will be referred to as the broken adaptive ridge regression approach. In addition to the establishment of the oracle property, we also show that the proposed method has the clustering or grouping effect when covariates are highly correlated. Furthermore, a numerical study is performed and indicates that the method works well for practical situations and can outperform existing methods. An application is provided.The Canadian Journal of Statistics46: 416–428; 2018 © 2018 Statistical Society of Canada
Catalyst‐Free Synthesis of Alkylpolyglycosides Induced by High‐Frequency Ultrasound
Authors: Amaniampong Prince Nana , Clément Jean‐Louis , Gigmes Didier , Ortiz Mellet Carmen , García Fernández José M. , Blériot Yves , Chatel Gregory , De Oliveira Vigier Karine , Jérôme François 
Published: August 2018

AbstractInvited for this month′s cover is the group of François Jérôme at the University of Poitiers. The image shows that the anomeric position of carbohydrates was successfully activated by high frequency ultrasound, without any catalyst or protective agent. The Communication itself is available at 10.1002/cssc.201801137.
Better late than never: a synthesis of strategic land retirement and restoration in California
Authors: Lortie Christopher J. , Filazzola A. , Kelsey R. , Hart Abigail K. , Butterfield H. S. 
Published: August 2018

AbstractStrategic retirement and restoration of agricultural lands is a critical conservation opportunity globally. The objective of this synthesis was to examine whether ecological habitat assessments, endangered species historical occurrence data, and restoration research can be used to develop evidence‐based strategy for retiring and restoring agricultural lands. The San Joaquin Desert (SJD) of California is a prominent example because it experienced an extensive conversion to agriculture. Now, new groundwater regulations will lead to retirement on large areas of agricultural lands over the next 20 yr. This presents an opportunity to not only restore some of these lands but also explore the challenges associated with balancing direct human needs with other ecosystem‐level functions. California is thus an ideal case study for globally rethinking context‐specific, single‐case study solutions. We used a systematic review and synthesis to address the following three main questions for habitat recovery of endangered species in the SJD. (1) What are the habitat requirements for key endangered animal species in the region? (2) Is there historical evidence to support an assessment of suitable habitats for these species? (3) What restoration techniques apply to these species? Using the Web of Science and other resources, we reviewed over 1000 independent studies on this topic, refined the evidence, and selected a total of 266 relevant publications. Habitat requirements for each species were described, but there was a critical need to examine quantitative thresholds for these factors to better evaluate habitat suitability of retired lands. There was sufficient evidence of historical vegetation to model suitable habitats and design the physical restoration of retired lands. Direct interventions associated with restoration strategies have been infrequently tested. Sparse and diverse evidence associated with direct experimental manipulations is not uncommon in applied ecology, and synthesis is an excellent tool for highlighting these gaps for future research to examine. This review suggests that retired agricultural land is a viable asset for threatened and endangered species, but to effectively advance restoration research and management, direct tests of restoration techniques and an assessment of relative costs for interventions are needed for a given region.
Reactive power control of power conditioning systems to avoid voltage deviation in high‐voltage distribution systems caused by both of photovoltaic generation and electric vehicle charging
Authors: Shimazu Takayuki , Takahashi Akiko , Shimofuji Keigo , Funabiki Shigeyuki , Nagata Takeshi 
Published: August 2018

AbstractThe introduction of electric vehicles has been increasing as well as photovoltaic generation systems. These introductions cause the voltage drop and rise on high‐voltage distribution lines, so that voltage deviation will be out of the specified voltage range. As a countermeasure against this problem, the voltage control method with static Var compensators (SVCs) is implemented. However, SVCs are expensive and power losses on the distribution line increase. This paper proposes a novel voltage control method in which power conditioning systems output leading and lagging reactive power aiming to solve the above‐mentioned problems. It is clarified that the proposed method is more effective in solution of these problems than compared with the voltage control method using SVCs.
Prediction of readmissions and mortality in patients with heart failure: lessons from the IMPEDANCE‐HF extended trial
Authors: Kleiner Shochat Michael , Fudim Marat , Shotan Avraham , Blondheim David S. , Kazatsker Mark , Dahan Iris , Asif Aya , Rozenman Yoseph , Kleiner Ilia , Weinstein Jean Marc , Panjrath Gurusher , Sobotka Paul A. , Meisel Simcha R. 
Published: August 2018

AbstractAimsReadmissions for heart failure (HF) are a major burden. We aimed to assess whether the extent of improvement in pulmonary fluid content (ΔPC) during HF hospitalization evaluated by lung impedance (LI), or indirectly by other clinical and laboratory parameters, predicts readmissions.Methods and resultsThe present study is based on pre‐defined secondary analysis of the IMPEDANCE‐HF extended trial comprising 266 HF patients at New York Heart Association Class II–IV and left ventricular ejection fraction ≤ 35% randomized to LI‐guided or conventional therapy during long‐term follow‐up. Lung impedance‐guided patients were followed for 58 ± 36 months and the control patients for 46 ± 34 months (P < 0.01) accounting for 253 and 478 HF hospitalizations, respectively (P < 0.01). Lung impedance, N‐terminal pro‐brain natriuretic peptide, weight, radiological score, New York Heart Association class, lung rales, leg oedema, or jugular venous pressure were measured at admission and discharge on each hospitalization in both groups with the difference defined as ΔPC. Average LI‐assessed ΔPC was 12.1% vs. 9.2%, and time to HF readmission was 659 vs. 306 days in the LI‐guided and control groups, respectively (P < 0.01). Lung impedance‐based ΔPC predicted 30 and 90 day HF readmission better than ΔPC assessed by the other variables (P < 0.01). The readmission rate for HF was lower if ΔPC > median compared with ΔPC ≤ median for all parameters evaluated in both study groups with the most pronounced difference predicted by LI (P < 0.01). Net reclassification improvement analysis showed that adding LI to the traditional clinical and laboratory parameters improved the predictive power significantly.ConclusionsThe extent of ΔPC improvement, primarily the LI based, during HF‐hospitalization, and study group allocation strongly predicted readmission and event‐free survival time.
Exploration of Capturing CO2 from Flue Gas by Calcite Slit‐Nanopores: A Computational Investigation
Authors: Sun Haoyang , Zhao Hui , Qi Na , Zhang Xiaohan , Li Ying 
Published: August 2018

AbstractCapturing CO2 from flue gas is recognized as a key process to improve the environment, therefore, developing a new cost‐effective sorbent is crucial. In this study, the calcite slit‐nanopores with various pore sizes ranging from ∼5 Å to ∼30 Å were constructed, the grand canonical Monte Carlo (GCMC) and molecular dynamics (MD) simulation methods were used to examine the microscopic behaviors of CO2 and N2 in calcite slit‐nanopores. Diverse adsorption layer structures for CO2 and N2 molecules as single component in calcite slit‐nanopores are found as the pore size changing, of which the CO2 represents a transformation from single adsorption layer to five adsorption layers, while N2 represents a variation from single adsorption layer to three adsorption layers. Meantime, different adsorption orientations of CO2 and N2 molecules adsorbed close onto the calcite pore surface are also found. Moreover, strong competitive adsorption of CO2 over N2 is found due to the different interactions between CO2 and N2 molecules with the calcite pore surface, the capacity of competitive adsorption decreases with the pore size increasing. The self‐diffusion and isosteric heat of CO2 and N2 molecules in calcite slit‐nanopores are also examined to demonstrate the different adsorption intensities of gases in calcite slit‐nanopores. This work demonstrates the detailed microscopic behaviors of CO2 and N2 molecules in calcite slit‐nanopores, which not only enriches the theoretical knowledge about gases adsorption in calcite slit‐nanopores, but also gives out the feasibility of capturing CO2 from flue gas by calcite‐based substances.
Brain networks underlying conscious tactile perception of textures as revealed using the velvet hand illusion
Authors: Rajaei Nader , Aoki Naoya , Takahashi Haruka K. , Miyaoka Tetsu , Kochiyama Takanori , Ohka Masahiro , Sadato Norihiro , Kitada Ryo 
Published: August 2018

AbstractHumans are adept at perceiving textures through touch. Previous neuroimaging studies have identified a distributed network of brain regions involved in the tactile perception of texture. However, it remains unclear how nodes in this network contribute to the tactile awareness of texture. To examine the hypothesis that such awareness involves the interaction of the primary somatosensory cortex with higher order cortices, we conducted a functional magnetic resonance imaging (fMRI) study utilizing the velvet hand illusion, in which an illusory velvet‐like surface is perceived between the hands. Healthy participants were subjected to a strong illusion, a weak illusion, and tactile perception of real velvet. The strong illusion induced greater activation in the primary somatosensory cortex (S1) than the weak illusion, and increases in such activation were positively correlated with the strength of the illusion. Furthermore, both actual and illusory perception of velvet induced common activation in S1. Psychophysiological interaction (PPI) analysis revealed that the strength of the illusion modulated the functional connectivity of S1 with each of the following regions: the parietal operculum, superior parietal lobule, precentral gyrus, insula, and cerebellum. The present results indicate that S1 is associated with the conscious tactile perception of textures, which may be achieved via interactions with higher order somatosensory areas.