Materials Literature
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A finite element mathematical modeling of elastic basis sheet blank interaction during semi closed dimension polyurethane pressure punching is presented. Optimal structural technological parameters values are detected based on numerical computing in the network of developed mathematical models. Optimal values allow re…
XR2-центров является двухфононный (рамановский) процесс.Radiation-induced paramagnetic centers in silicon dioxide aerogel were investigated by high-frequency pulse EPR spectroscopy. The existence of two types of radiation-induced paramagnetic centers was proved: the centers without superhyperfine structure (XR1) and t…
The magnetic field occurring in the air gap of a surface permanent magnet (PM) machine is analytically modelled. The methodology is based on the use of some “field functions”, each of one representing the field waveform due to a particular source (PM or current) or anisotropy effect (slotting). Such field functions ar…
The European Project on "Treatment and Disposal of Irradiated Graphite and other Carbonaceous Waste (CARBOWASTE)" has been launched in 2008 under the 7th EURATOM Framework Programme (FP7-211333), with duration of four years. \nThis project addresses the retrieval, treatment and disposal of irradiated graphite (i-graph…
The article puts forward the chemical reagents raising safety of recycling dangerous substances according to the Target program of industrial armament recycling and means of radiating, chemical and biological protection
Prohoroff V.J., Rodionoff А.I. TECHNOLOGICAL ASPECTS OF PRESSING OF COMPOSITE MATERIALS IN THE METAL HOLDER. Repair of transport and technological machines is one of the basic components of technical operation. Repair manufacture should be sufficiently provided with necessary spare parts. Their lack is the serious fac…
SD выведены. Результаты представлены в графиках и рисунках A round transverse isotropy plate simply bearing by one of the border and uniformly pressurized was considered. The resolving system of a three differential equations with non-linear coefficients was built. The main idea consists by solving task with semi-inve…
An attempt to estimate by thermodynamic method the probability of chemical reactions flowing in contact zone of metal-casting mold at production of castings of iron-carbon alloys is undertaken.
HCCI combustion characteristics of mixed fuels with different ignitability, toluene/DME, were investigated. Toluene is thermally stable with a high oxidation onset temperature, whereas DME has good ignitability with active low temperature oxidation reactions. Engine test was conducted using a single cylinder, naturall…
近年來，工業及學術界多致力於節能減碳及綠色化學的研究。其中，催化反應具有下列優點：(1)反應條件溫和、(2)低能源消耗、(3)高立體位向選擇性、(4)高官能基容忍度、(5)高原子經濟效益及 (6)低環境污染，故長期以來都是合成化學重點研究領域。本研究論文分為五個部分，分別探討有機金金屬催化順式-2,4-雙烯-1-醛、縮醛或縮酮丙二烯、環氧丙炔醇、羰基丙炔及酮基丙二烯的環化反應。 Chapter 1 利用金金屬Ph3PAuSbF6催化順式-2,4-雙烯-1-醛進行環化反應，藉由去氧基和具有立體位向控制的1,4-加成反應，形成兩個碳-碳、碳-氫、碳-氧、碳-氮或碳-硫鍵，與雙親核基分子的環化加成反應則可快速建立複雜的環戊烯化合物。實驗…
Calculation of the vibration and noise spectra in processing box bodies with the ball-point reinforcer and theoretical research results of vibro-acoustic performance of this kind of treatment are presented. Dependences for the vibro-speed and acoustic power levels are detected. It is established that abatement of nois…
The molecular structure of (2,6- i Pr2C6H3)N (quin)2 (1) and both the methanol and toluene solvates of its copper complex (Cu{(2,6- i Pr2C6H3)N(quin)2}2)BF4, 2� MeOH and 2.2(C6H5Me), respectively, have been deter- mined. The quinolyl rings in 1 adopt anti-syn (CAr-N-C- Nquin) conformation as a result of p-p stacking.…
Many plant species found in different regions, collected randomly or by following leads supplied by local healers in geographical area are found, to be altered in their phytochemical constituents. In the present study certain plant species were collected from different localities (geographical areas) of Agra city and…
HCCI combustion is expected to enable the internal combustion engines to operate with higher thermal efficiency and cleaner exhaust emissions compared to conventional combustion systems. However, a difficulty in ignition timing control is a major problem preventing it from practical applications to automobiles. Adjust…
Tribological properties of a nano-eutecticFe1.87C0.13 alloy were investigated under distilled-waterlubrication against AISI52100 steel ball for various appliedloads and sliding speeds. For comparison, the tribologicalbehavior of annealed coarse-grained Fe1.87C0.13 alloy wasalso examined under the same testing conditio…
Analysis of activation of solution and diffusion processes under the interaction between melt and solid is used. Dependence of the original material concentration on temperature, time, melt and solid area of contact, viscosity and melt volume is derived.
Eight kinds of Sm thin-films with different thickness have been prepared by deposited on clean Fesurfaces with accuracy of 0.1 nm(Sm(d nm)/Fe(10.0 nm)(d＝0.3,0.5,0.7,1.0,1.5,2.0,5.0,10.0)), and the Sm3d 5/2 3/2 XPS spectra of the films have been,in situ,measured at 16K and room temperature. Two lines derived from the S…
Today a lot of new modern construction materials appear which thermal characteristics should be measured. New automatic instrument ДК–сλ–400 to measure thermal capacity and thermal conductivity of homogeneous solid nonmetallic materials at monotonous heating mode have been considered at this research.
Fully natural circulation system is adopted in a decay heat removal system (DHRS) of the designs of Japan Sodium Cooled Fast Reactor (JSFR). Several investigations of experiments and simulation methods on this DHRS were performed. Water experiments were carried out for the primary heat transportation system including…
There is continuing interest in the vinyl derivatives of azoles due to the fact that vinylazoles show high polymerization reactivity under radical initiation con� ditions, while polymers thereof exhibit a wide spec� trum of valuable properties (high energy properties, complexing ability toward metal ions, low toxicity…