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EFFECT OF THE HEAT OF rEACTION DUrING THE ALUMINOTHErMIC PrOCESS OF ILMENITE

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Acta Metallurgica Sinica(English Letters) 2005年第2期18卷 173-176页

作者： Y.Z.Lan J.Liu r.W.Smith MaterialsDepartment YunnanUniversityKunming650091China MetallurgicalandMaterialsDepartment NevadaUniversityofRenoNV89503NevadaUSA

The influence of the heat of reaction during the aluminothermic process for the production of ferrotitanium was investigated. The effect of the variation of the heat of reaction on FeTi and Ti recovery and the topographical analysis of slag produced showed that FeTi and Ti recovery increased and Al content in the alloy decreased with the increase of the absolute value of ΔH when │ΔH│r, when │ΔH│>2584.24K·J/kg, FeTi and Ti recovery decreased with an increase of the absolute value of ΔH. Therefore, the heat of reaction in the aluminothermic process of ilmenite should be strictly controlled to -2584.24K·J/kg.

关键词： ilmenite Al reduction the heat of reaction

Optimization of Torsional Stiffness for Heavy Commercial Vehicle Chassis Frame

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Automotive Innovation 2018年第4期1卷 352-361页

作者： S.H.Gawande A.A.Muley r.N.Yerrawar Department of Mechanical Engineering M.E.S.College of Engineering PuneS.P.Pune UniversityPuneIndia

The chassis frame is the backbone of a heavy commercial vehicle(HCV).Its main purpose is to securely carry the determined load under all designed operative ***,it should be rigid enough to withstand the various forces acting on *** objective of this study was to develop a stiffness model to select an optimum cross section with determined torsional ***’s method of optimization was adapted to develop a stiffness equation and select a section with a determined torsional stiffness and a requiredmass *** stiffness obtained from the developed stiffnessmodel and finite element analysis(FEA)is a close match,which proves the validity of the proposed *** section with the maximum torsional stiffness was used for frame-level optimization to improve the torsional and lateral stiffness of the overall chassis *** strain energy absorption capacity of the cross member improved by changing the section of the cross *** using the optimized section,the torsional stiffness of the frame improved by 44%and a lateral stiffness of 10%was *** Creo software was used for modeling and FEA was performed with the Hypermesh software.

关键词： Chassis frame Torsional stiffness FEA Cross members Deformation

A proper motion study of the globular cluster M12(NGC 6218)

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research in Astronomy and Astrophysics 2018年第10期18卷 97-108页

作者： Devesh P.Sariya Ing-Guey Jiang r.K.S.Yadav Department of Physics and Institute of Astronomy National Tsing Hua UniversityHsin-Chu Aryabhatta research Institute of observational sciencES(ArIES) Manora PeakNainital 263 002India

Using astrometric techniques developed by Anderson et al., we determine proper motions （PMs） in the ~ 14.60 × 16.53 arcmin^2 area of the kinematically ＂thick-disk＂ globular cluster M 12. The cluster＇s proximity and sparse nature makes it a suitable target for ground-based telescopes. Archive images with time gap of ~ 11.1 years were observed with the wide-field imager （WFI） mosaic cam-era mounted on the ESO 2.2m telescope. The median value of PM error in both components is 0.7masyr^-1 for the stars having V ≤ 20mag. PMs are used to determine membership probabil-ities and to separate field stars from the cluster sample. In electronic form, a membership catalog of 3725 stars with precise coordinates, PMs and BVrI photometry is being provided. One of the possible applications of the catalog is demonstrated by gathering the membership information of the variable stars, blue stragglers and X-ray sources reported earlier in the cluster＇s region.

关键词： Galaxy globular clusters - astrometry - catalogs - individual M12

Preparation of Amorphous Film on Ni-S Alloy by Electroplating Method

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Chinese Chemical Letters 1998年第11期9卷 0-0,0-0页

作者： Du M. Gao r.J. Wei X.J. Ocean Univ Qingdao Coll Chem & Chem Engn Qingdao 266003 Peoples R China NE Univ Technol Dept Nonferrrous Met Shenyang 110006 Peoples R China

Beginning from the formation of amorphous alloy film and its use of proAnse, this paper obtains the Ni-S amorphous alloy film by electroplating method using a bath containing Na2S2O3, and considers the deposition conditions in detail. The composition of Ni-S alloy film changes with the cathodic current density, Na2S2O3 content in the bath solution and bath pH, but the structure of the film is detendned by the sulphur content in the deposit. X-ray diffraction (XrD) patterns show that films containing about 15-30% sulphur consist of amorphous alloy. In addition, the process of Ni-S alloy film deposition and the relation between the plating conditions and deposits were studied.

关键词： Ni-S alloy electroplating amorphous structure

Pigs fed camelina meal increase hepatic gene expression of cytochrome 8b1, aldehyde dehydrogenase, and thiosulfate transferase

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Journal of Animal Science and Biotechnology 2014年第2期5卷 215-221页

作者： William Jon Meadus Pascale Duff Tanya McDonald William r Caine AAFC-Lacombe 6000 C&E TrailLacombeABCanada T4L 1 W1 School of Innovation Olds College4500-50th St.OldsABCanada T4H 1R6 Caine research Consultinq Box #1124NiskuABCanada T9E 8A8

Comelina sotivo is an oil seed crop which can be grown on marginal lands. Camelina seed oil is rich in omega-3 fatty acids （〉35%） and y-tocopherol but is also high in erucic acid and glucosinolates. Camelina meal, is the by-product after the oil has been extracted. Camelina meal was fed to 28 d old weaned pigs at 3.7% and 7.4% unt age 56 d. The camelina meal supplements in the soy based diets, improved feed efficiency but also significantly increased the liver weights. Gene expression analyses of the livers, using intra-species microarrays, identified increased expression of phase 1 and phase 2 drug metabolism enzymes. The porcine versions of the enzymes were confirmed by real time PCr. Cytochrome 8b1 （CYPSB1）, aldehyde dehydrogenase 2 （Aldh2）, and thiosulfate transferase （TST） were all significantly stimulated. Collectively, these genes implicate the camelina glucosinolate metabolite, methyl-sulfinyldecyl isothiocyanate, as the main xeniobiotic, causing increased hepatic metabolism and increased liver weight.

关键词： Camelina meal Gene expression Glucosinolates Pig liver

Co-deposition of Co-Ni alloys and their microstructure analysis by PoSAP

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Chinese Science Bulletin 1997年第23期42卷 2013-2014页

作者： r.A.D.Mackenzie G.D.W.Smith Department of Materials University of Oxford Parks Road Oxford OX1 3PH UKDepartment of Materials University of Oxford Parks Road Oxford OX1 3PH UK

PULSED-co-electrodeposition （PCD） is a new and promising technique for producing alloymaterials of nanometer grain size. In this letter, Co-Ni alloys were produced by PCD, and theeffect of CO+2 ion concentration in the depositing baths on the Co content and the microstruc-ture in the corresponding deposit was studied by the position sensitive atom probe （PoSAP）,TEM and X-ray diffraction. The Co-Ni phase diagram shows that, at room temperature,there are two phases in Co-Ni alloys, one is εCo with hcp lattice, the other is αCo of fcc lat-tice. A Co-Ni alloy with a Ni content below 27% consists of single εCo, beyond 36% consistsof single αCo, in between consists of εCo + αCo. The examination results of TEM, SEM andX-ray diffraction indicated that the Co-Ni deposits with average grain size of 70 nm and thick-

关键词： Co-deposition of Co-Ni alloys and their microstructure analysis by PoSAP Ni

Performance analysis of SiGe double-gate N-MOSFET

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Journal of Semiconductors 2017年第4期38卷 38-44页

作者： A.Singh D.Kapoor r.Sharma Department of Electronics and Communication Engineering Vaish College of EngineeringRohtak 124001India Department of Electronics and Communication Engineering Northern India Engineering CollegeNew Delhi 110053India

The major purpose of this paper is to find an alternative configuration that not only minimizes the limitations of single-gate（SG） MOSFETs but also provides the better replacement for future *** this paper,the electrical characteristics of SiGe double-gate N-MOSFET are demonstrated and compared with electrical characteristics of Si double-gate ***,in this paper the electrical characteristics of Si doublegate N-MOSFET are demonstrated and compared with electrical characteristics of Si single-gate *** simulations are carried out for the device at different operational voltages using Cogenda Visual TCAD ***,we have designed its structure and studied both Id-Vg characteristics for different voltages namely 0.05,0.1,0.5,0.8,1 and 1.5 V and Id-Vd characteristics for different voltages namely 0.1,0.5,1 and 1.5 V at work functions 4.5,4.6 and 4.8 eV for this *** performance parameters investigated in this paper are threshold voltage,DIBL,subthreshold slope,GIDL,volume inversion and MMCr.

关键词： double gate MOSFET DIBL GIDL volume inversion SiGe Genius tool

Cytomorphology of Gentiana kurroo: an important endangered bitter plant of temperate Himalaya

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Journal of Forestry research 2011年第4期22卷 621-626页

作者： M. C. Behera r. raina Krishi Vigyan Kendra At- Paljhor Po-Salunki District. Boudh Orissa University of Agriculture & Technology INDIA- 762014 Dept. of Forest Products Dr. Y.S. Parmar University of Horticulture Forestry Nauni-Solan HIMACHAL PrADESH INDIA- 173 230

Gentiana kurroo, a potent bitter drug plant of Indian subcon- tinent, is under threat due to over exploitation and destruction of natural habitat. We studied the murphophenology and chromosomes of G. kurtoo on both wild and field grown plants, which is very important for proper identification, conservation and domestication. results reveal that G. kurroo is a perennial herb, and its shoot is represented by flowering branches only. Stem is modified to rhizome. The older rhizomes split into four parts at collar region appearing to fuse together at the ends and is an important diagnostic feature for crude raw materials. Two types of leaves i.e. radical leaves at the base of the plant and canline leaves on flowering shoot are present. Flowering occurs during September to October with 1-9 inflorescences per plant. Inflorescence is terminal monoca- sial cysome type. Mowers are protrandus. Anthesis starts around 7.30 am and continued till 10.0 am. Ovary is bicarpillary syncarpous unilocular. Fruit is Capsule and takes 18-20 days to mature after fertilization. Seeds are very small elliptical and 1 000 seeds weigh to 0.1275 g. Chromosomal studies made by usual squash method reveals the species is a genomic allotetreploid with n = 13. The anaphase-I segregation was normal and in none of the cells at Anaphase-I or Telophase-I could any abnor- mality like laggards, bridges, micronuclei etc. be observed.

关键词： cytology morphology allotetzaploid Gentiana kurroo floral character

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Journal of Hydrodynamics 1992年第2期4卷 10-23页

作者： Hu Zheng-yuan,Jiangxi Polytechnic University, Nanchang 330029, P.r.China Jiangxi Polytechnic Univ Nanchang China

The water intake head installed with inclined boardings is called laminate sediment precipitation, which separates liquid and solid particles in two-phase flow by gravity. The paper presents the equations for calculating the distance H between two incllined boardings, indicating that H has a key effect on the particle precipitation velocity V_2. The paper focuses also on the cal- culation of hydraulic similarity of model with the theoretic model.

关键词： sediment reynolds number water intake head inclined boardings froude similarity criterion