新型刨煤机组

简要介绍了俄罗斯联邦主要煤炭产区使用刨煤机开采薄煤层的依据和主要优点，详细叙述了ＫＭ－１３７ＣＸＢ刨煤机组及配套的Ｍ－１３７型组合式支架和紧凑型刨煤装置的结构特点，列出了机组的主要技术参数。     

感光材料稳定剂的作用机理

本文对几种稳定剂作用机理作了研究和讨论。一些化合物的稳定作用与 (AgAu)S感 光中心的吸附有关 ,而另一些化合物的稳定作用则与 AgX晶体表面的吸附有关,第三类化合物的稳定作用是由于氧化感光材料储存期间所生成的银颗粒 (灰雾中心 )。把不同性能的稳定剂组合使用能有效地改善感光材料的稳定性。     

"THERMO": COMPUTER PROGRAM FOR SIMULATION OF SURFACE PULSE HEATING

1.IntroductionTheoneofthemostimportantparametersofthethermalcycleduringsurfacepulseheatingistherateofheatingandcooling.Knowledgeofthesevaluesinparticulartemperatureintervalshelpstoprognosticatephasestructureintheheataffectedzones(HAZ),toanalyzecausesofthestructuretransformations.Todaythereisavoluminousliteratureoncalculationofthethermalconditionsforasolidduringsurfaceprocessing.Butthetemperaturevariationsareusuallyexaminedasafunctionoftimeorspacecoordinates.Sometimesthefirstderivativeofthete…     

Possible Phenomena of Stochastic Behaviour of Shear Deformed Aluminum

The influence of shear deformation on the behaviour of Mg and Zn impurities as well asself-interstitial atoms in Al was studied using molecular dynamics method.The profilies of potentialrelief were calculated in directions of possible migration of interstitials.It was found that under load-ing the location of interstitial atoms may be undefined.It means that the system of determined parti-cles may go into stochastic regime of behaviour.     

Methods of electrochemical study of natural metal sulfides

1　ＩＮＴＲＯＤＵＣＴＩＯＮＭｅｔａｌｓｕｌｆｉｄｅｓａｒｅｔｈｅｍａｉｎｓｏｕｒｃｅｏｆｎｏｎ ｆｅｒｒｏｕｓｍｅｔａｌｓ .Ｉｎｔｈｅｉｒｅｘｔｒａｃｔｉｏｎｆｒｏｍｏｒｅｓ ,ｔｈｅｐｒｏｃｅｓｓｏｆｍｉｎｅｒａｌｆｌｏｔａｔｉｏｎｐｌａｙｓａｍｏｓｔｉｍｐｏｒｔａｎｔｒｏｌｅ .Ｅｌｅｃ ｔｒｏｃｈｅｍｉｃａｌｍｅｔｈｏｄｓｂｅｃｏｍｅｖｅｒｙｕｓｅｆｕｌｆｏｒｓｔｕｄｙｏｆｍｅｔａｌｓｕｌｆｉｄｅｓａｎｄｔｈｅｉｒｆｌｏｔａｔｉｏｎｄｕｅａｎｅｌｅｃｔｒｏｃｈｅｍｉ ｃａｌｎａｔｕｒｅｏｆｔｈｅ…     

Joint cost and secured node disjoint energy efficient multipath routing in mobile ad hoc network

Wireless Networks - The severe resource constraints and deployment environments of mobile ad hoc networks (MANETs) pose challenges for the security and energy consumption during data transmission...     

INFLUENCE OF A MISORIENTATION ANGLE ON AN ENERGR OF THE SYMMETRIC GRAIN BOUNDARY IN FCC METALS

In the present work the research of grain boundary (CB) energy versus angle of misorientation in fcc metals Al, Cu, An and Ni was carried out. An axis of CB misorientation is a direction [100], angle of misorientation makes from 2皍p in 23*. The interatomic interaction was opproximated by Morse' s pair semi-empirical potential. Two variants of relaxation technique were used: (1) rigid relax- ation with the change of atom quantity per a GB (vacancy relaxation ) and (2) full atomic relaxation by a molecular static method. The obtained orientation dependence has a good agreement with experi- ment. There are cusps on a curve in the range of special GB angles.The comparison of obtained curves with calculated ones in model Van der Merwe was carried out. Dependencies obtained in our investiga- tions are not smooth and have an oscillatory character. The oscillations reflect a discrete structure of a lattice.     

THE INVESTIGATION OF KINETICS OF HIGH-TEMPERATURE STRUCTURE TRANSFORMATION OF HOMOPHASES AND HETEROPHASES MATERIALS

1.IntroductionTheinvestigationofinternalboundaries(antiphaseandinterphaseboundaries,grainboundariesandothers)inhomophaseandheterophasematerialsistheactualproblemofphaseorder--disordertransitionkinetics.TherearesomeexpermentaldatashowingtheirimportantroleinprocessesofmaterialstructuretransformationundervariousexternalfaCtorsll--4](temperature,pressure,stressandothers).Forexample,differentstructuralfeaturesarelocalizedonantiphasedomainboundarieswithtemperaturegrowth[2,3].Antiphaseboundariesbeha…     

快速凝固Al—RE—Ni非晶合金的显微结构及热稳定性分析

采用旋铸急冷工艺直接在大气环境中获得了具有良好韧性的Al_(87)RE_8Ni_5和Al_(92)RE_4Ni_4(at.-%)非晶合金,并对其显微结构及热稳定性进行了分析。结果表明,当急冷条带的厚度为50—60μm时,Al_(87)RE_8Ni_5条带为单一的非晶结构;而Al_(92)RE_4Ni_4条带包括贴辊面区的非晶结构、中心区的“非晶+微晶”和自由表面区的微晶组织。非晶Al_(87)RE_8Ni_5和Al_(92)RE_4Ni_4中的非晶结构都具有高的热稳定性,过冷液体存在温度区间(T_x-T_g)分别为53和83K;并且其玻璃形成能力参量T_g/T_m分别为0.56和0.59。     

水声景与人的感知研究

水声作为声景研究中的重要内容,需要从人的感知偏好以及水声对人的情绪和心理影响等方面进行深入研究。基于水声景研究的最新进展,采取"水声景感知"实验方法,选取20种水声样本,使用语义差异法和七点双极量表,针对68名被试者进行了水声景感知测试,分析了被试者对14种水声和雨落在6种不同材料上发出声音的感知反应,得到了不同声音的受欢迎程度,并对水声对于不同背景的人的情绪影响进行了初步分析。研究结果可为水声景设计和康复景观设计提供一定参考,有助于在噪声水平较高的环境中改善人的心理和感知状态。