检索结果-南通市图书馆

Journal of Advanced Ceramics 2021年第2期10卷 237-246页

作者： Dmitry A.Permin Maksim S.Boldin Alexander V.Belyaev stanislav S.Balabanov Vitaly A.Koshkin Atrem A.Murashov Igor V.Ladenkov Evgeny A.Lantsev Ksenia E.Smetanina Nadia M.Khamaletdinova G.G.Devyatykh institute of chemistry of high-purity substances of the ras nizhny novgorod603137russia Lobachevsky state university of nizhny novgorod nizhny novgorod603950russia “Joint-stock company”research and production enterprise“salut” nizhny novgorod603950russia G.A.Razuvaev institute of organometallic chemistry of the ras nizhny novgorod603137russia

A glycine–nitrate self-propagating high-temperature synthesis(SHS)was developed to produce composite MgO-Gd_(2)O_(3) *** X-ray powder diffraction(XRD)analysis confirmed the SHS-product consists of cubic MgO and Gd_(2)O_(3) phases with nanometer crystallite size and retains this structure after annealing at temperatures up to 1200℃.Near full dense high IR-transparent composite ceramics were fabricated by spark plasma sintering(SPS)at 1140℃and 60 *** in-line transmittance of 1 mm thick MgO-Gd_(2)O_(3) ceramics exceeded 70%in the range of 4–5 mm and reached a maximum of 77%at a wavelength of 5.3 *** measured microhardness HV0.5 of the MgO-Gd2O3 ceramics is 9.5±0.4 GPa,while the fracture toughness(KIC)amounted to 2.0±0.5МPa·m1/*** characteristics demonstrate that obtained composite MgO-Gd_(2)O_(3) ceramic is a promising material for protective infra-red(IR)windows.

关键词： MgO-Gd_(2)O_(3) self-propagating high-temperature synthesis(SHS) spark plasma sintering(SPS) optical properties infra-red(IR)ceramics

Forearm Loss Caused by Automated Non-Invasive Blood Pressure Cuff Malfunction: A Hearsay Report

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Open Journal of Anesthesiology 2015年第11期5卷 227-232页

作者： Steven M. Shulman Yunseok Namn stanislav Lando Patrick Discepola Department of Anesthesiology Rutgers-New Jersey Medical School Newark USA Department of Anesthesiology Department of Anesthesiology Yale University New Haven USA Department of Anesthesiology Montefiore Medical Center New York USA Department of Anesthesiology Wake Forest Baptist Medical Center Winston-Salem USA

Failure of an automated blood pressure cuff to deflate when a patient is under general anesthesia can lead to catastrophic consequences if unnoticed for more than three hours [1]. We present this as a hearsay case in which an automated blood pressure cuff of the Spacelabs Ultraview Clinical Workstation monitor (model No. 90385) applied pressure for about five hours resulting in limb thrombosis. In order to analyze this catastrophe, simulation scenarios were tested to elucidate the possible errors and malfunctions that may have led to this injury. We present the analysis of the advantages and validity of the hearsay case report. We also include our proposed criteria that should be required when a hearsay case is considered for publication.

关键词： Monitor Malfunction Hearsay Compartment Syndrome Non-Invasive Blood Pressure

Behaviour of a Composite Concrete-Trapezoidal Steel Plate Slab in Fire

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Engineering（科研） 2010年第8期2卷 594-601页

作者： Tomaz Hozjan Miran Saje Igor Planinc stanislav Srpcic Sebastjan Bratina University of Ljubljana Faculty of Civil and Geodetic EngineeringLjubljanaSlovenia

The present paper investigates fire resistance of a simply-supported composite concrete-trapezoidal steel sheet slab. The objective is to find out if a steel sheet, as a moisture diffusion barrier, may substantially effect the hydro-thermal situation in the concrete part of the cross-section. The numerical integration of the equations of a coupled hygro-thermal boundary-value problem (Tenchev, R.T., Li, L.Y. and Purkiss, J.A. (2001) Num. Heat Transfer Part A, 39(7), 685-710), with and without considering the barrier, shows that the barrier does not really effect the magnitude and the development of temperatures over the cross-section, while there is a significant effect on the pattern of moisture transport and the magnitude of vapour pressure. Particularly high magnitudes of vapour pressure (about 4.5 MPa) were shown in cases where the steel sheet was considered in analyses, which indicates a possible micro damage of concrete in the web of the section, although spalling probably cannot take place due to the steel sheet cover. As the typical composite slab investigated here is not sufficiently fire resistant without any additional reinforcement bars placed in the web, further in-vestigations are directed to finding an optimal position and area of these bars. Following a simplified procedure given in EC2 (Eurocode 2, Design of Concrete Structures, Part 1.2 (2004) Structural fire design, European Committee for Standardization) and assuming that the present composite slab is subject to the uniform traction , yields that placing one bar with the area 1.153 cm2 4 cm away from the edge suffices for the 60 min fire resistance of the slab.

关键词： Fire Analysis Composite Structures Heat and Mass Transfer

Is Gravitational Radiation a Radiation of the Same Level as Electromagnetic Radiation?

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Modern Physics 2014年第15期5卷 1397-1401页

作者： stanislav I. Fisenko I. S. Fisenko Rusthermosynthesis JSC Moscow Russia

The notion of gravitational radiation as a radiation of the same level as the electromagnetic radiation is based on the theoretically proven and experimentally confirmed facts of the existence of stationary states of an electron in its gravitational field, characterized by the gravitational constant K = 1042 G (G is Newtonian gravitational constant) and unrecoverable space-time curvature Λ. These experimental facts include, in particular, data on the broadening of the spectra of the characteristic radiation of multielectron atoms. This broadening of the spectra can be only due to the additional broadening mechanism, in particular the presence of excited states of electrons in their gravitational field. Another fact is the new line in the X-ray emission spectrum according to the results of observation with MOS-camera of the XMM-Newton observatory. This line unlike other identified lines of electromagnetic radiation cannot be assigned to any atomic transition.

关键词： Electron Stationary State Characteristic Radiation The Broadening of the Emission Spectra

Euthanasia:National and International Experience(Based on the European Court of Human Rights Practice Materials)

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Forensic Science and Medicine 2023年第1期9卷 33-37页

作者： Olena O.Orlova Tetiana M.Alforova Tetiana M.Lezhnieva stanislav V.Chernopiatov Oleh V.Kyrychenko Department of General Legal Disciplines Faculty of LawDnipropetrovsk State University of Internal AffairsDniproUkraine Department of Law Faculty of Law and PsychologyDnipro Humanitarian UniversityDniproUkraine

Purpose:The relevance of the study is that today,there is no unanimous position on the right to euthanasia *** European Court of Human Rights(ECtHR),in making its decision,relies on the national legislation of the respective state,as there is no single decision on the right to euthanasia in the European ***,the aim of the article is to comprehensively study the phenomenon of euthanasia,elaborate the decisions of the ECtHR on euthanasia and related rights,and develop recommendations on the possibility of legalizing euthanasia in Ukraine and prospects for the right to die ***:The leading method of research of this issue is comparative and law,which allows to comprehensively consider the right to euthanasia and its positive and negative components and helps to establish trends in the implementation of the outlined ***:The article analyzes the current state of international and domestic legislation of some states on the use of euthanasia,reveals the meaning of the term“euthanasia,”provides a classification of euthanasia,analyzes the decisions of the ECtHR,and presents examples of national legislation of states within which euthanasia is legalized,the peculiarities of euthanasia recognition in the world are analyzed,as well as the research on the possibility of euthanasia legalization in Ukraine is ***:The materials of the article have practical value for all those interested in euthanasia and the realization of the right to die,as well as for practicing lawyers and judicial authorities.

关键词： Medical assistance in dying rules of end‑of‑life care the right to die the right to life treatment refusal

Regulating Ecosystem Service (Filtering/ Immobilization of Inorganic Pollutants) Supplied by Soil in Model Regions of Slovakia

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Geoscience and Environment Protection 2021年第11期9卷 61-72页

作者： Jarmila Makovníková Boris Pálka Miloš Širáň stanislav Kološta National Agricultural and Food Centre/Soil Science and Conservation Research Institute Bratislava Regional Station Banská Bystica Slovakia Faculty of Economics Matej Bel University in Banská Bystrica Banská Bystrica Slovakia

The immobilization of soil contaminants (as one of the regulating ecosystem services) plays very important role in environment. This regulatory service prevents groundwater contamination and the entry of contaminants into the food chain. The evaluation as well as the spatial distribution of this regulatory service is important for optimal land management in a specific region. Mapping system combining input layers—slope topography, soil texture, climate region and land use (arable land, grassland)—were created for the analysis and the evaluation of potential of agroecosystem services. Filtering potential was calculated as accumulative function of soil sorption potential and potential of total content of inorganic pollutants evaluated according to The Slovak Soil Law. Calculated potential was categorised into five categories: very low, low, medium, high and very high. Four model areas were selected for the analysis of pollutant filtration, as one of the regulatory agroecosystem services, which are located in different climatic areas and different soil-ecological conditions of Slovakia. The greatest differences among model regions can be found in relation to climatic conditions, land use and diversity of soil types. The warm, dry, and lowland region has a higher potential for pollutant filtration than the moderately warm or cold region. These results are consistent with the location of the soil, its properties, processes and functions within the concept of agro-ecosystem services. Based on the results, we can state that the high risk of inorganic contaminants is i

关键词： Filtering Ecosystem Service Inorganic Contaminants Soil Sorbents

季节变化对沙漠生态系统土壤中自由生活线虫和原生动物间营养关系的影响(英文)

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

动物学报 2008年第1期54卷 84-95页

作者： stanislav PEN-MOURATOV Salvador Rodriguez ZARAGOZA Einav MAYZLISH Yosef STEINBERGER The Mina and Everard Goodman Faculty of Life Sciences Bar-Ilan University Ramat-Gan 52900 Israel Lab. de Microbiología Unidad de Biología Tecnología y Prototipos Facultad de Estudios Superiores Iztacala UNAM. Avenida de los Barrios #1 Los Reyes Iztacala Tlalnepantla Estado de México 54090 México

选择沙漠常绿灌木丛枝霸王(Zygophyllum dumosum)群落及群落间的开阔地带采样,研究土壤线虫和原生动物的种群大小、物种组成及营养结构。本研究共获线虫29属,裸变形虫33属90种;在所获各类原生动物中,鞭毛虫和纤毛虫均为食细菌类群,而鞭... 详细信息

选择沙漠常绿灌木丛枝霸王(Zygophyllum dumosum)群落及群落间的开阔地带采样,研究土壤线虫和原生动物的种群大小、物种组成及营养结构。本研究共获线虫29属,裸变形虫33属90种;在所获各类原生动物中,鞭毛虫和纤毛虫均为食细菌类群,而鞭毛虫个体数量最多;在沙漠生态系统中,土壤湿度被认为是影响生物活性的最重要因素之一。然而,本研究显示:土壤湿度对线虫和原生动物是否重要取决于这些动物对土壤湿度的生理生态适应能力;土壤线虫和原生动物的体型大小、生活史策略和活动能力与土壤湿度的有效性相关不显著,但它们对微生物和微小土壤动物区系间的相互作用有重要影响,在干旱生态系统中,这种影响能够显著改变土壤生态系统短期的养分循环。本研究还表明,土壤线虫和原生动物种群间的关系主要取决于两者营养类群组成的变化。

关键词：干旱原生动物线虫营养关系土壤

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

中俄贸易发展存在的问题及对策研究

中俄贸易发展存在的问题及对策研究

作者：李海（Likho stanislav）中国石油大学(华东)

学位级别：硕士

经济全球化背景下,区域合作愈来愈频繁,区域经济一体化趋势逐渐形成,国家间的经济交往日益紧密。中俄两国作为彼此重要的战略合作伙伴,无论政治关系还是双边经济贸易关系,都有着密切的合作。中俄贸易处于快速稳定发展时期,但总的来说,... 详细信息

经济全球化背景下,区域合作愈来愈频繁,区域经济一体化趋势逐渐形成,国家间的经济交往日益紧密。中俄两国作为彼此重要的战略合作伙伴,无论政治关系还是双边经济贸易关系,都有着密切的合作。中俄贸易处于快速稳定发展时期,但总的来说,由于多方面因素的影响,中俄双边贸易规模相对各自的发展潜力仍有很大差距,中俄两国的经济贸易合作明显落后于两国政治合作。为了促进中俄贸易进一步发展,加强彼此合作,研究中俄贸易发展存在的问题,找到其影响因素,并提出促进两国贸易发展的对策具有重要意义。中国有丰富的劳动力,俄罗斯自然资源相对丰富,因此中俄贸易明显的互补性特征,符合国际贸易的比较优势理论,进一步为中俄贸易奠定基础。本文通过从中俄贸易总额规模、双方贸易地位、商品贸易的进出口结构以及商品种类结构、产业内贸易、投资贸易与结算体系几方面详细分析了中俄贸易的发展现状。从现状分析中发现,中俄贸易主要存在贸易规模小、商品结构不平衡、产业内贸易水平较低、投资贸易过度集中以及结算体系不完善等几方面的问题。根据存在的问题,结合比较优势理论、产业内贸易理论等国际贸易理论,从四个角度分析各因素对中俄贸易产生的影响。最后结合分析结果,并根据中俄贸易发展趋势,提出加快中俄贸易发展的对策。

关键词：中俄贸易比较优势产业内贸易贸易结构

Application of Matrix Approach for Evaluation and Assessment the Potential of Recreational Ecosystem Service in Model Regions in Slovakia

同方学位论文库评论

在线全文

同方学位论文库

学校读者我要写书评

暂无评论

Open Journal of Ecology 2021年第4期11卷 437-450页

作者： Jarmila Makovníková Boris Pálka stanislav Kolosta Katarína Orságová National Agricultural and Food Centre/Soil Science and Conservation Research Institute Bratislava Slovakia Matej Bel University in Banská Bystrica Faculty of Ecomonics Banská Bystrica Slovakia

Recreation and tourism are important for economic growth and human wellbeing. They are directly related to the cultural services provided by ecosystems. Recreational services, as part of tourism, have the greatest potential for development within the sector of services in the Slovak economy, and they are able to generate a significant number of new jobs especially in small rural regions. There is a gap in the literature providing assessments of geographically small regions in relation to their potential to provide different types of ecosystem services. The aim of the article was to evaluate and assess the recreational potential of ecosystem services in two small pilot regions of the Slovak Republic, Brezno district and Krupina district. Modified matrix of indices was used. Results showed that Brezno district has a higher area of ecosystems with a higher potential for recreation, therefore the conditions for recreation and tourism are much better in comparison to Krupina district. However, the use of recreation potential in Brezno district is negatively affected by the availability of sites and transport options, which is reflected in a lower ratio of visitors to the capacity of recreation potential. This finding opens up discussion about opportunities to create new jobs within sustainable tourism in Brezno district. This study provides an alternative view to the assessment and evaluation of the recreational potential of ecosystem services in small regions. Moreover, the methodology developed in this paper is replicable and could be applied by planners using geographical information systems.

关键词： Potential Ecosystem Services Recreational Services Evaluation Assessment

Flocculating Properties of Water-Soluble Polymer-Colloid Complexes of Aluminoxane Particles with Weakly Charged Cationic Polyelectrolytes

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Water Resource and Protection 2011年第4期3卷 213-221页

作者： stanislav Radchenko Ivan Novakov Philipp Radchenko Cong Le Van Elena Rybakova 不详

The flocculating properties of polymer-colloid complexes (PCCs) formed via noncovalent interactions of positively charged aluminoxane particles (APs) with macromolecules of weakly charged cationic acrylamide copolymers from the Praestol and Organopol series have been studied. The PCCs that spontaneously formed during mixing of sols of a high-basicity aluminum polyhydroxochloride (APHC) with aqueous solutions of the copolymers exhibit high flocculating ability under the conditions of gravity sedimentation of the model kaolin dispersion with Сd = 8 g/dm3, and their efficiency exceeds both that of the copolymers and the earlier obtained PCCs with nonionogenic polyacrylamide (PAA). In contrast to weakly charged polycationites, the fully charged KF-99 polyelectrolyte does not form PCCs and the products of its mixing with APHC do not reveal an increased flocculating effect.

关键词： Polymer-Colloid Complexes of Aluminoxane Particles Weakly Charged Cationic Polyelectrolytes Kaolin Flocculation