检索结果-南通市图书馆

Quantification of Solid Residues by Raman Spectroscopy

在线全文

学校读者我要写书评

暂无评论

Optics and Photonics Journal 2013年第5期3卷 1-6页

作者： Esau Araiza-Reyna Roberto Sato-Berrú América vázquez-Olmos Centro de Ciencias Aplicadas y Desarrollo Tecnológico Universidad Nacional Autónoma de México Circuito Exterior s/n Ciudad Universitaria Delegación Coyoacán México D.F. México Facultad de Ciencias Universidad Autónoma de San Luis Potosí Av. Salvador Nava Martínez s/n Zona Universitaria San Luis Potosí México

We suggest a mathematical route which has the capability to obtain quantitative information of solid residues on a substrate of aluminum, in which the evaporation of the deposited micro-drops has the form of coffee rings. In this job, the glycine aminoacid was used as probe molecule. We suppose that the number of moles present on the study sample is proportional to the Raman signal and to the experimental parameters of the used Raman system. Then, the mass and the number of molecules can be determined with these data. We showed that the mathematical expression is simple and elegant for its implementation. On the other hand, we have applied and demonstrated that the technique of principal component analysis (PCA) can be used to obtain quantitative information of the sample. Our results show quantitative analysis of glycine residues between 10-11 to 10-15 g.

关键词： Quantitative Raman Aminoacids Glycine Solid residues Drop Coating Deposition Raman Principal Component Analysis

Some Technical Solutions for Environmental Protection System during Accidents at Nuclear Power Plants

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Engineering and Technology 2017年第4期5卷 1-11页

作者： Sergey A. Kulyukhin Igor’ A. Rumer viktor m. Berkovich Gennadii S. Taranov Ivan v. Yagodkin viktor P. Osipov Sergey S. Skvortsov Leo N. Falkovskii Frumkin’ Institute of Physical Chemistry and Electrochemistry Russian Academy of Sciences (IPCE RAS) Moscow Russia Institute “Atomenergoproekt” (AEP) Moscow Russia Institute of Physics and Power Engineering (IPPE) Obninsk Russia All-Russian Research Institute of Atomic machine-Building (vNIIAm) Moscow Russia

The paper reports some technical solutions, which suggested or used for increasing of environmental protection during accidents at NPPs. For NNPs with two protective shells and pressure release system such as WWER-1000 a comprehensive, passive-mode environmental protection system of decontamination of the radioactive steam-air mixture from the containment and the intercontainment area was suggested. This system includes the “wet” stage (scrubbers, etc.), the “dry” stage (sorption module), and also an ejector, which in a passive mode is capable of solving the multi-purpose task of decontamination of the air-steam mixture. For WWER-440/230 NPPs three protection levels: 1) a jet-vortex condenser;2) the spray system;3) a sorption module were suggested and installed. For modern designs of new generation NPPs, which do not provide for pressure release systems, a new passive filtering system together with the passive heat-removal system, which can be used during severe accidents in case all power supply units become unavailable, was proposed and after modernization was installed at the KudanKulam NPP (India).

关键词： Nuclear Power Plants Severe Accident Environment Protection Radioactive Steam-Air Phase

非自喷井的一次下井油管输送射孔、生产测试和压力恢复试井方法

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

油气井测试 1989年第4期 168-173页

作者： J.A.Barnes C.v.Swafford P.m.Snider 唐愉拉

在流体不能流到地面的油井中,最近发展了一种能同时进行射孔、流动测试和关劳记录压力恢复数据的方法和工具。在这些试验中,油管传输射孔枪、井下压力计、水力射流泵总成与一种特殊设计的空心套简(blanking Sleeve)一起下入井中。在井... 详细信息

在流体不能流到地面的油井中,最近发展了一种能同时进行射孔、流动测试和关劳记录压力恢复数据的方法和工具。在这些试验中,油管传输射孔枪、井下压力计、水力射流泵总成与一种特殊设计的空心套简(blanking Sleeve)一起下入井中。在井进行负压射孔并进行流动清洗直至油流停止流动之后,打开空心套筒的水力旋转开关,利用反向流动射流泵举升液体,在液体流动期间进行流动测试。流动测试完成之后,进行井下关井可获得压力恢复数据。这样,利用工作管柱一次下井便同时完成了射孔、流动测试和压力恢复试井。该系统有如下优点:1.在完井之前可以确定出准确的液流量和含水率。2.不需要多次下入工作管柱,减少了钻机占用时间。3.在射孔和流动测试期间可以不压井作业。4.所有设备和操作都是压为控制的,消除了电缆操作的危险和成本。5.井底关井提供了高质量的信息以评价是否需要进行额外的增产措施。

关键词：压力恢复试井射孔段生产测试测试期间负压射孔井下压力计管柱旋转开关油管压力自喷井

A Petrogenetic model of Basalts from the Northern Central Indian Ridge:3-11°S

在线全文

学校读者我要写书评

暂无评论

Acta Geologica Sinica(English Edition) 2007年第1期81卷 99-112页

作者： Dwijesh RAY Sridhar D. IYER Ranadip BANERJEE Saumitra mISRA m. WIDDOWSON Geological Oceanography Division National Institute of Oceanography Goa-403 004 India Department of Geology and Geophysics Indian Institute of Technology Kharagpur-721 302 India Department of Earth Sciences Open University Milton Keynes MK7 6AA U.K.

mid-Ocean Ridge Basalts （mORB） from the Northern Central Indian Ridge （NCIR） were recovered between latitudes 3° and 11° S and are olivine tholeiite with higher abundances of K and Rb. They are of typical transitional mORB （T-mORB） variety and appear to have been generated from an enriched-mantle peridotite source. The primitive NCIR mORBs having mg^# 〉 0.68 are the product of partial melting at an estimated pressure of - 1 GPa. It is inferred that the magma was subsequently modified at a pressure 〉 1 GPa by crystal fractionation and spinel was the first mineral to crystallize followed by separation of relatively Fe-rich olivine with subsequent decrease in pressure. During progressive fractionation at lower pressure （between 1-0.5 GPa）, the bulk composition of the magma became systematically depleted in mgO, and enriched in ∑FeO, TiO2, P2Os and Na20. There was, however, limited gradual depletion in Al2O3 and CaO and concomitant enrichment in K20. With the progressive fractionation these basalts became gradually enriched in v, Co, Y, Zr and to some extent in Sr, and depleted in Ni and Cro In addition, the T_JtEE of the magma also increased with fractionation, without any change in （La/Yb）n value.

关键词： mORB NCIR geochemistry petrogenesis Indian Ocean mid-ocean ridge

Inundation Studies Along the East Coast of India due to Tsunamigenic Earthquakes in North-Andaman and Car Nicobar Subduction zone

在线全文

学校读者我要写书评

暂无评论

地学前缘 2009年第S1期16卷 65-65页

作者： R.Krishna Kumar Kirti Srivastava v.Swaroopa Rani v.P.Dimri National Geophysical Research Institute(NGRI)(Council of Scientific and Industrial Research)

The Sumatra-Andaman arc is an active subduction zone and had generated several destructive Tsunamis in the *** this paper we have analyzed two historical Tsunamigenic earthquakes from this region. One of the historical earthquake is the earthquake of 26th June 1941 in the North Andaman region,which was one of the strongest in the Andaman Sea and Bay of Bengal of magnitude m_w=*** earthquake had triggered tsunami which affected the east coast of *** other is the earthquake in Car Nicobar region on 31 st December 1881 of magnitude m_w=7.9. This submarine earthquake beneath the

关键词： inundation tsunamigenic earthquakes tsunami wave propagation run-ups

在线全文

学校读者我要写书评

暂无评论

长曲率半径的测量

西安工业大学学报 1985年第1期 24-31页

作者： m.v.R.K默逖 R.P.舒克拉孙桂林

本文综述了凹、凸球面反射镜长曲率半径的几种测量方法,这些方法在激光器反射镜的测量中甚为有用。本文还比较和总结了各种测量方法所能达到的精度。

关键词：反射镜凸面透镜反光镜剪切干涉仪曲率半径牛顿环法条纹间距准直光束象散

muller细胞在非增殖性糖尿病视网膜病变中的作用

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

航空航天医药 2010年第5期21卷 635-636页

作者：刘红谷万章陶源周丽霞 Zueva m.v. 中航工业哈尔滨二四二医院黑龙江哈尔滨150066 莫斯科Helmholtz眼病研究所

目的:评价muller细胞在非增殖期糖尿病视网膜病变中的作用。方法:对46例(92只眼)非增殖期糖尿病视网膜病变病人进行了闪光视网膜电图(ERG)、局部ERG以及12、32、40赫兹闪烁光ERG检查,并计算纤维指数:闪光ERG的b波幅值/12赫兹闪烁光ERG... 详细信息

目的:评价muller细胞在非增殖期糖尿病视网膜病变中的作用。方法:对46例(92只眼)非增殖期糖尿病视网膜病变病人进行了闪光视网膜电图(ERG)、局部ERG以及12、32、40赫兹闪烁光ERG检查,并计算纤维指数:闪光ERG的b波幅值/12赫兹闪烁光ERG幅值。结果:非增殖期糖尿病视网膜病变的32、40赫兹闪烁光ERG b波幅值位于正常低限,闪光ERG的a波幅值中度降低,为(54±9.6)μv,b波幅值正常,12赫兹闪烁光ERG幅值明显降低,为(25.8±9.4)μv,纤维指数平均为(9.3±1.4)单位。结论:纤维指数增高是视网膜缺血缺氧的共同特点,表明muller细胞的代谢活性代偿性增高。

关键词： muller细胞非增殖性糖尿病视网膜病变

A New Type of Waveguide Distribution for the Accelerator module Test Facility of the European XFEL

在线全文

学校读者我要写书评

暂无评论

Journal of mechanics Engineering and Automation 2017年第2期7卷 59-64页

作者： v. Katalev S. Choroba A. Seliverstov E. Apostolov Deutsches Elektronen-Synchrotron DESE MHF-p Hamburg 22607 Germany Scientific & Production Company FERRITE Ltd. St. Petersburg 196084 Russia microPlus-Apostolov Ltd. Sofia 1505 Bulgaria

Photoluminescent Properties of ComoO_(4)Nanorods Quickly Synthesized and Annealed in a Domestic microwave Oven

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 Chemical Engineering and Science 2012年第4期2卷 465-473页

作者： Ana P.de moura Larissa H.de Oliveira Paula F.S.Pereira Ieda L.v.Rosa máximo S.Li Elson Longo Jose A.varela Chemistry Institute University of Sao Paulo StateAraraquaraBrazil Chemistry Department Federal University of Sao CarlosSao CarlosBrazil Physical Institute University of Sao PauloSao CarlosBrazil

A simple way to prepare α- and β-ComoO4 nanorods is reported in this paper. ComoO4xH2O nanorod precursors were obtained using the microwave-assisted hydrothermal (mAH) method. By annealing the as-prepared ComoO44xH2O precursor at 600℃ for 10 min in a domestic microwave oven, α- and β-ComoO4 nanorods were prepared. These powders were analyzed by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEm), Fourier transform Raman microscopy and ultraviolet visible absorption spectroscopy (Uv-vis spectra) as well as photoluminescence (PL) measurements. Based on the results, these materials revealed nanorod morphology. PL spectra obtained at room temperature for α- and β-ComoO4 particles exhibited maximum components around the blue light emission. The results show that the domestic microwave oven has been successfully employed to obtain α- and β-ComoO4 nanoparticles.

关键词： Photoluminescence Nanorods molybdates microwave-Hydrothermal method