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Finite Groups of Spencer Height ≤ 3

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Algebra Colloquium 2015年第3期22卷 437-444页

作者： Wenbin Guo Dina P. andreeva Alexander N. Skiba School of Mathematical SciencesUniversity of Science and Technology of China Hefei 230026 China Department of Mathematics Francisk Skorina Gomel State University Gomel 246019 Belarus

In this paper, we describe the finite groups G in which every maximal chain M3 〈 M2 〈 M1 〈 M0 = G contains a proper subnormal subgroup of G.

关键词： finite group subnormal subgroup maximal chain Spencer height Schmidt group

Grinding exfoliation for scalable production of 2D materials

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National Science Review 2020年第3期7卷 559-560页

作者： Kostya S.Novoselov Qi Ge Daria V.andreeva Department of Materials Science and Engineering National University of Singapore National Graphene Institute University of Manchester

Over the past few years the utilisation of graphene in various areas of industry has strongly intensified [1]. Applications in thermal management, composite materials and energy consume an increasing amount of this tw... 详细信息

关键词： Grinding exfoliation for scalable production of 2D materials Graphene

The “Brain Stress Timing” phenomenon and other misinterpretations of randomized clinical trial on aneurysmal subarachnoid hemorrhage

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Neural Regeneration Research 2019年第8期14卷 1364-1366页

作者： Rafael Martinez-Perez Natalia Rayo Agustin Montivero Jorge Marcelo mura Division of Neurosurgery Institute of Clinical Neurosciences Universidad Austral de Chile Valdivia Chile Division of Cerebrovascular and Skull Base Neurosurgery Institute of Neurosurgery Dr Asenjo Santiago Chile Western University London ON Canada

Clipping and coiling are currently the two alternatives in treatment of ruptured cerebral aneurysms. In spite of some meritorious analysis, further discussion is helpful to understand the actual state of art. Retreatment and rebleeding rates clearly favors clipping, although short-term functional outcome seems to be beneficial for clipping, while this different is not such if we perform the comparison at a longer follow up. Longterm follow ups and cost analysis are mandatory to have a clear view of the current picture in treatment of subarachnoid hemorrhage. Treatment strategy should be made by a multi-disciplinary team in accredited centers with proficient experience in both techniques.

关键词： sAH subarachnoid hemorrhage coiling clipping ruptured aneurysm timing intracranial

HIFs in hypoxic regulation of the extracellular matrix:focus on little-known player HIF-3

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BIOCELL 2024年第5期48卷 677-692页

作者： ALEKSANDRA GORNOSTAEVA LUDMILA BURAVKova MARgaRITA LOBANova ELENA andreeva Institute of Biomedical Problems of the Russian Academy of Sciences Khoroshevskoye Shosse 76AMoscow123007Russia

The structural and associated molecules of the extracellular matrix(ECM)complex is an important component of the local milieu of cells,both for maintaining their functions and *** is a dynamic structure that is finely tuned to changes in the *** of these factors is hypoxia,which can arise in tissues due to physiological or pathological *** a result of the hypoxic effect,the properties of the ECM are significantly modified,stiffness increases,the balance between degradation and synthesis of structural proteins shifts,and the deposition of biologically active mediators’***-inducible factors(HIFs)contribute significantly to the modification of the properties of the ECM under *** the three HIF isoforms,HIF-1 is the most studied,with numerous identified target genes encoding proteins that participate in all matrisome *** less is known about HIF-2 and *** the context of the effects of hypoxia on the matrisome,HIF-3 isoform is of particular *** the first two isoforms,transiently expressed during the first hours of hypoxia,HIF-3 is activated after around 24 h of exposure to hypoxia and persists for a longer *** addition,its transcription is more pronounced under hypoxia than are HIFs 1 and ***-3,rather than the first two isoforms,is possibly responsible for the changes that occur in matrisome during prolonged hypoxic *** review attempts to summarize the available data on the involvement of HIF-3 in the matrisome modification under hypoxia.

关键词： Hypoxia Hypoxia-inducible factors Matrisome

Analysis of a load application point in spline coupling teeth

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2014年第4期15卷 302-308页

作者： Francesca CURA Andrea mura Department of Mechanical and Aerospace Engineering Politecnico di Torino C.so Duca degli Abruzzi 24 10129 Torino Italy

The objective of this paper is to investigate the position of the resultant force in involute spline coupling teeth due to the contact pressure distribution for both ideal and misaligned conditions. In general, spline coupling teeth are in contact all along the involute profile and the load is far from uniform along the contact line. Theoretical models available in publications consider the resultant contact force as it is applied at the pitch diameter, and this study aims to evaluate the error introduced within the confines of a common approximation environment. This analysis is carried out through using finite element method （FEM） models, considering spline couplings in both ideal and misaligned conditions. Results show that the differences between the load application diameter and pitch diameter are not very obvious in both ideal and misaligned conditions; however, this ap- proximation becomes more important for the calculation of the tooth stiffness.

关键词： Spline coupling Pitch force Teeth load Parallel offset

A Note on Solutions for Asymptotically Linear Elliptic Systems

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Acta Mathematicae Applicatae Sinica 2008年第3期24卷 511-522页

作者： Lei-ga Zhao Department of Mathematics Beijing University of Chemical Technology 100029 Beijing China Academy of Mathematics and Systems Science Chinese Academy of Sciences Beijing 100190 China Department of Mathematics Yunnan Normal University Kunming 650092 China

In this paper, we are concerned with the elliptic system of{ -△u＋V（x）u=g（x,v）, x∈R^N, -△v＋V（x）v=f（x,u）, x∈R^N, where V（x） is a continuous potential well, f, g are continuous and asymptotically linear as t→∞. The existence of a positive solution and ground state solution are established via variational methods.

关键词： Elliptic system ground state solution variational methods concentration-compactness principle

Influence of Taxation on Supply and Demand in Tomorrow's Crowd Energy Paradigm

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Journal of Electronic Science and Technology 2015年第3期13卷 237-245页

作者： James Craven evgenia Derevyanko Mario Gstrein Bernd Teufel the International Institute of Management in Technology University of Fribourg

The emergence of the energy self-sufficient home presents a new role for government taxation. Policymakers now face the challenge of reflecting this technological change in their decision-making and must assume a greater level of engagement. This paper proposes a number of original fiscal concepts for policymakers to implement in the support of micro-grid development. These are designed to optimise a sustainable transition away from the centralised energy system whilst creating shared value among stakeholders throughout the value chain. Concepts are based on residential micro-grid schemata in Switzerland and are applicable in other countries.

关键词： Carbon tax crowd energy energy harvesting energy storage government micro-grids photovoltaic systems power generation economics

Use of non-selective beta blockers in cirrhosis:The evidence we need before closing(or not) the window

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World Journal of gastroenterology 2015年第8期21卷 2265-2268页

作者： Vincenzo La mura Giulia Tosetti Massimo Primignani Francesco Salerno U.O. Medicina Interna IRCCS-San Donato Dipartimento di Scienze Biomediche per la Salute Università degli studi di Milano U.O. gastroenterologia-1 IRCCS-Ca’ Granda Ospedale Maggiore Policlinico

Non selective beta blockers(NSBBs)are used in primary and secondary prophylaxis of portal hypertensionrelated bleeding in patients with *** efficacy of NSBBs treatment is predicted by hemodynamic response in term of reduction of the hepatic venouspressure gradient(HVPG)below 12 mm Hg or at least20%of the basal *** a relevant number of patients who do not achieve this HVPG reduction during NSBBs therapy do not bleed during follow up;this evidence suggests an additional non-hemodynamic advantage of NSBBs treatment to modify the natural history of *** studies have questioned the efficacy and safety of NSBBs in patients with advanced stage of liver disease characterized by refractory ascites and/or spontaneous bacterial *** studies have suggested the existence of a defined and limited period to modify the natural history of cirrhosis by NSBBs:the"window hypothesis".According with this hypothesis,patients with cirrhosis benefit from the use of NSBBs from the appearance of varices up to the development of an advanced stage of ***,in patients with refractory ascites and/or spontaneous bacterial peritonitis the hemodynamic effects of NSBBs may expose to a high risk of further complications such as renal insufficiency and/or *** concerns and contrasting results counterbalance the evidence produced up to now on this issue and are the main topic of this editorial.

关键词： Bleeding prophylaxis End stage liver disease Non-s

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A stranger's journey

A stranger's journey