检索结果-南通市图书馆

Cherenkov radiation from electrons passing through human tissue

在线全文

学校读者我要写书评

暂无评论

Journal of Innovative Optical Health Sciences 2017年第1期10卷 94-98页

作者： pavel Lukin Izmail Batkin alexandr N.Almaliev Tatyana A.Churakova Mikhail A.Dolgopolov Igor V.Kopytin Department of physics Voronezh State University 1 Universitetskaya Sq.Voronezh 394000Russia School of Electrical Engineering and Computer Science University of Ottawa 800 King Edward A venue OttawaON CanadaK1N 6N5

A method for investigating the optical properties of human tissues is *** method is based on the measurement of Cherenkov radiation produced by relativistic electrons passing through the ***-Carlo simulation of visible photon emission and propagation is carried out taking into account multiple electron and photon scattering *** of the Cherenkov radiation to the optical characteristics of human tissues is demonstrated.

关键词： Coherent radiation human tissue optics multiple scattering.

The New Formula of Seismic Rigidity Method

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Open Journal of Civil Engineering 2018年第3期8卷 326-340页

作者： alexandr S. Aleshin The Schmidt Institute of the Earth of Russian Academy of Science (IpE RAS) Moscow Russia

This publication is a revised version of the previous article. Seismic rigidity method despite its widespread use is the object of harsh criticism from scientists who oppose it to the methodology and results of seismological registration of earthquakes and microseisms. The article substantiates the original approach based on the solution of the direct problem of seismic microzonation for the model of real soil thickness. A new formula of the seismic rigidity method is proposed, taking into account the lithological, hydrogeological and spectral features of the soil mass, as well as the position of the new seismic scale of the SSI. The formula was tested on the example of the correct description of the features of macroseismic effects on the territory of Leninakan at the Spitak earthquake in 1988. Linear estimates according to the formula of seismic rigidity in the seismic microzoning area represent changes in seismic intensity in the most contrast way. It is shown that the real estimates of seismic intensity under strong seismic effects (by I > VII degree) will not exceed those given by the formula of the seismic rigidity method.

关键词： Seismic Microzonation Degree of Intensity Seismic Rigidity Method Ground Category Referent Ground Seismic Impacts Spectral Characteristics Dynamics Coefficient Model Continuity

Lessons and prospects of Sino-Russian Arctic cooperation

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Advances in polar Science 2016年第3期27卷 185-191页

作者： BAI Jiayu alexandr Voronenko Ocean University of China Qingdao 266100China Consultant Interregional Association for Economic Interaction(Far East and Transbaikalia) st.Chehova 4-212680022KhabarovskRussian Federation

The strategic partnership between China and Russia is creating solid ground for the cooperative development of the Arctic. These two states＇ joint development of the Northern Sea Route will not only provide additional impulse to the export- oriented economy of China and allow further diversification of supply routes to China, but will also promote investment into the infrastructure and economic growth of Russian northern territories. Climate change in the Arctic has forced China and Russia to acknowledge the sustainable use of the Arctic. On the one hand, exploration of the region should not harm indigenous people＇s rights and should help this population improve their standard of living by providing qualified healthcare and opportunities for commercial fulfillment of traditional crafts. On the other hand, this exploration should also include elimination of harmful anthropogenic impact and provide support for environment self-restoration. Sino-Russian Arctic cooperation will help humans discover eco-friendly approaches to use Arctic resources, promote rational use of the Arctic and inspire sustainable development of the region.

关键词： Arctic cooperation Arctic Ocean sustainable development of the Arctic region Northern Sea Route

Diabetic cardiac autonomic neuropathy: Do we have any treatment perspectives?

在线全文

学校读者我要写书评

暂无评论

World Journal of Diabetes 2015年第2期6卷 245-258页

作者： Victoria A Serhiyenko alexandr A Serhiyenko Department of Endocrinology National Medical University named after Danylo Galytski

Cardiac autonomic neuropathy(CAN) is a serious and common complication of diabetes mellitus(DM). Despite its relationship to an increased risk of cardiovascular mortality and its association with multiple symptoms and impairments, the significance of CAN has not been fully appreciated. CAN among DM patients is characterized review the latest evidence and own data regarding the treatment and the treatment perspectives for diabetic CAN. Lifestyle modification, intensive glycemic control might prevent development or progression of CAN. pathogenetic treatment of CAN includes: balanced diet and physical activity; optimization of glycemic control; treatment of dyslipoproteinemia; correction of metabolic abnormalities in myocardium; prevention and treatment of thrombosis; use of aldose reductase inhibitors; dihomo-γ-linolenic acid(DGLA), acetyl-Lcarnitine, antioxidants, first of all α-lipoic acid(α-LA), use of long-chain ω-3 and ω-6 polyunsaturated fatty acids(ω-3 and ω-6 pUFAs), vasodilators, fat-soluble vitamin B1, aminoguanidine; substitutive therapy of growth factors, in severe cases-treatment of orthostatic hypotension. The promising methods include research and use of tools that increase blood flow through the vasa vasorum, including prostacyclin analogues, thromboxane A_2 blockers and drugs that contribute into strengthening and/or normalization of Na^+, K^+-ATpase(phosphodiesterase inhibitor), α-LA, DGLA, ω-3 pUFAs, and the simultaneous prescription of α-LA, ω-3 pUFA and DGLA.

关键词： Diabetes mellitus Cardiac autonomicneuropathy postural hypotension treatment

pitfalls of microseismic data inversion in the case of strong anisotropy

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Applied Geophysics 2016年第2期13卷 326-332,418,419页

作者： Sergey Yaskevich Georgy Loginov Anton Duchkov alexandr Serdukov Novosibirsk State University Trofimuk Institute of petroleum Geology and Geophysics of Siberian Branch Russian Academy of Sciences

In downhole microseismic monitoring, anisotropic models are presently useful for obtaining the locations of events and give realistic description of the media. In anisotropic media, the wavefield structure is complex because of shear-wave splitting and singularities. We show the results of conventional processing and kinematic inversion using velocity model calibrations for strongly anisotropic VTI media and double-couple seismic sources. The small traveltime misfits, typical quality assessment criteria, are not always accurate. The artificial addition of isotropic layers may reduce the misfit but it may also produce nonphysical model, negative poisson ratios, shifted locations.

关键词： microseismic monitoring anisotropy location quality

The Relative Viscosity of Concentrated Rubber Suspensions and Viscoelastic Modulus of 3D Сross-Linked Elastomers Filled with Solid particles

在线全文

学校读者我要写书评

暂无评论

Open Journal of Applied Sciences 2013年第8期3卷 477-481页

作者： alexandr Ermilov Ergasch Nurullaev perm National Research polytechnic University Perm Russia

For the first time, this paper describes the concentration dependence of the relative dynamic viscosity coefficient of rubber suspensions and the initial viscoelastic modulus of 3D cross-linked elastomers on the maximum volume filling with solid polydisperse particles. It allows to predict the rheological and mechanical properties of the polymer compositions being developed now. In this paper, we present the first experimental study of the pole of the concurrent lines of the concentration dependence in the coordinates of the linear form. The pole validates the invariant value of the constant of the developed equation and allows the experimental determination of the maximum volume filling of polymer binders filled with separate fractions or polydisperse mixtures. The results of the study are recommended for use in developing new polymer composite materials.

关键词： Viscosity Mechanical Destruction Elastomeric Composites with Dispersed Fillers Rheology Rubbers polymeric Binders Asphalt Coatings

Glueball in QCD Sum Rules

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

IMp & HIRFL Annual Report 2017年第1期 17-18页

作者： alexandr pimikov Zhang pengming 不详

The lowest dimension three-gluon currents that couple to the exotic 0±−glueballs have been constructed using the helicity *** on the constructed currents,we obtain new QCD sum rules(SRs)that have been used to extract... 详细信息

关键词： QCD constants decay

pentaquarks in QCD Sum Rules

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

IMp & HIRFL Annual Report 2019年第1期 30-31页

作者： alexandr pimikov Zhang pengming 不详

During 2019,using the QCD sum rules,we have studied the avor singlet hidden-charm pentaquark states of udscc with the spins 1/2,3/2,and 5/*** assume that those states consist of the two colored ***,we consider them as... 详细信息

关键词： quark cluster states

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

单斜星叶石矿物的穆斯堡尔光谱学研究

岩石学报 2008年第1期24卷 166-170页

作者：苏文施倪承刘密兰马喆生李哲 alexandr KHOMYAKOV 中国科学院地质与地球物理研究所北京100029 中国地质大学北京100083 吉林大学仪器测试中心长春130023 莫斯科大学地质系俄罗斯莫斯科

本文对产于俄罗斯希宾地区的单斜星叶石进行了不同的温度条件下的穆斯堡尔光谱效应研究,通过在温度分别在298 K,180 K和80 K条件下的分析,发现单斜星叶石由2个Fe^(2+)和1个Fe^(3+)四极双峰组成,并进行了单斜星叶石中的畸变参数包括八面... 详细信息

本文对产于俄罗斯希宾地区的单斜星叶石进行了不同的温度条件下的穆斯堡尔光谱效应研究,通过在温度分别在298 K,180 K和80 K条件下的分析,发现单斜星叶石由2个Fe^(2+)和1个Fe^(3+)四极双峰组成,并进行了单斜星叶石中的畸变参数包括八面体键角(σ~2)和键长变量(Δ)的计算。但是,在两个畸变参数之间存在着明显的差异,将无法对它们的穆斯堡尔参数和四极双峰进行指派。本文对温度在同质异能位移和四极分裂中的作用进行了探讨,根据通过穆斯堡尔效应和f(Fe^(3+)(O))/f(Fe^(2+)(O))的平均值获得的三价铁对全铁的比值,改写了单斜星叶石的化学式。

关键词：单斜星叶石穆斯堡尔效应温度作用