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在光谱仪设计及误差分析理论的基础上，提出了一种基于数值模拟的系统装调误差分析方法。利用光线追迹方法分析了一米太阳塔多波段光......
An electro-hydraulic actuator for the thrust vector control(TVC)of a throttlable kerolox rocket engine is introduced in ......
这项活动在墙边就可以做。下面将教你如何做出手影动物和有趣的脸形。开始做时如一盏60瓦灯泡的台灯;一张桌子。1.把那盏不带灯罩......
The Ministry of Commerce made public a bulletin on adjusting the import quotas of refined oils and t
The Ministry of Commerce today made public its bulletin on adjusting the import quotas of refined oils, vehicle tyres a......
AIM:To investigate whether central obesity is associated with nonalcoholic fatty liver disease(NAFLD) formation after ad......
<正> NN resonances have been discovered by recent measurements, for example, A（1, 1D2, 2.16）, B（1, 3F3, 2.26） and C（0,1G3, 2.......
A new variable time step method,which is called the backwards calculating time step method,is presented in this paper.It......
Luminescent properties and energy transfer mechanism from Tb~(3+) to Eu~(3+) in CaMoO_4:Tb~(3+),Eu~(
A series of CaMoO_4:Tb~(3+),Eu~(3+) phosphors were prepared by the method of precipitation. The structure and morphology......
DEGREE OF BRANCHING OF THE HYPERBRANCHED POLYMERS RESULTED FROM AB_2 POLYCONDENSATION WITH SUBSTITUT
The analytical expressions of the various structural units and the average degree of branching for the hyperbranched pol......
Elimination of turned dendrite in laser multilayer deposition of Rene88DT superalloy on DD3 single c
Laser multilayer deposition of Rene88DT superalloy on DD3 single-crystal substrate is conducted.The influences of the cr......
With industrial kraft lignin as precursors, the transformer oil as dispersive phase, addin sodium dodecyl sulfate as dis......
Effects of a carbon convection field on large diamond growth under high-pressure high-temperature co
Large diamond crystals were successfully synthesized by a FeNi-C system using the temperature gradient method under high......
A series of single-phased Ca_(2)Al_(2)SiO_(7):Eu~(2+) phosphors were synthesized by the solid-state reaction. Their stru......
Synthesis and co-luminescence properties of Tb~(3+)-methacrylic acid-1,10-phenanthroline complexes d
A series of rare earth complexes Tb_(1-x)Eu_x(MAA)_3phen(x=0.00, 0.01, 0.03, 0.05, 0.07, 0.09, 0.10, 0.30, and 0.50) wer......
CoO nanostructures with tunable morphology and size have been prepared via a simple one-pot solvothermal synthesis. The ......
Phase-, shape- and size-controlled synthesis of NaYF_4:Yb~(3+),Er~(3+) nanoparticles using rare-eart
Hexagonal-phase NaYF4:Yb3+,Er3+ upconversion nanoparticles(UCNPs) with a uniform size distribution were synthesized usin......
Structure Controlling and Adsorption Application of Polyethersulfone Porous Microspheres Prepared vi
The focus of this work is to control the structure of electrosprayed polymer microspheres and then study the effect of d......
In this paper,glass fibers were prepared by centrifugal-spinneret-blow(CSB) process.The molten glass got different flow ......
Flow characteristics, such as flow pattern, gas holdup, and bubble size distribution, in an internal loop reactor with e......
A new separation method of neptunium from large amount of plutonium by TEVA column has been developed.A series of influe......
Optimal Operation for Baoying Pumping Station in East Route Project of South-to-North Water Transfer
Baoying pumping station is a part of source pumping stations in East Route Project of South-to-North Water Transfer in C......
In order to solve the problem of enhancing the vehicle driving stability and safety,which has been the hot question rese......
The grinding of ultra-fine talcum powder and its application in a polypropylene (PP) matrix were investigated. Ultra-fin......
ZnO as a semiconductor photocatalyst is widely applied in the photodegradation of organic pollutants.Its photocatalytic ......
CROSSLINKED ORGANOSILOXANE HYBRID MATERIALS PREPARED BY CONDENSATION OF SILANOL AND MODIFIED SILICA:
Hybrid materials based on polymethylphenylsiloxane (PMPS) and organic functionalized silica were synthesized via condens......
Experiments of proppant conductivity and fluid flow in proppant cost a large amount of time and money,and also require c......
Cobalt hollow nanospheres: controlled synthesis, modification and highly catalytic performance for h
Size tunable cobalt hollow nanospheres with high catalytic activity for the ammonia borane(AB) hydrolysis have been synt......
Austenitic high-Mn steels with Mn contents between approximately 15 and 30 wt% gain much interest because of their excel......
Cigarette Smoking Increases Risk for Incident Metabolic Syndrome in Chinese Men—Shanghai Diabetes St
Objective To determine whether smoking increases the risk for developing metabolic syndrome (MetS) in Chinese men.Method......
The coherent-light-driven tunneling in double quantum wells has been studied. The electrons are coupled to a system of ......
Using a standard photolithographical procedure, chemical wet etching and thermal diffusion bonding technology, a chemic......
Magnetically impelled arc butt welder is mainly used in the automotive industry for butt welding tubes.To extend the ran......
Selective Area Growth and Characterization of GaN Nanorods Fabricated by Adjusting the Hydrogen Flow
GaN nanorods are successfully fabricated by adjusting the how rate ratio of hydrogen(H_2)/nitrogen(N_2) and growth tempe......
In recent years, DNA supramolecular hydrogels have attracted much attention due to their injectability, biocompatibility......
Impact of change in serum sodium concentration on mortality in patients hospitalized with heart fail
Background-Hyponatremia is a common electrolyte abnormality among patients hospitalized with heart failure and it is a m......
The Sublimation method so far extensively used in growing large boulesof ZnSe from vapour phase has been improved by so......
According to the evaluative data of forest biodiversity variation in China from 1973 to 1998, not only the gray model G......
The output characteristics of Yb3+-doped fiber laser at different temperatures are investigated. When temperature is inc......
A photonic heterostructure with multi-channel and sharp angular defect modes by combining two different one-dimensional ......
A novel all-fiber self-organization coherent Erbium-doped fiber laser is proposed and demonstrated. The laser system is ......
SiNx films are deposited on silicon wafers through plasma enhanced chemical vapor deposition(PECVD). The relationship be......
In order to control group velocity,an annular chain of microring coupled-resonator optical waveguides was analyzed,and i......
We proposed a scheme of fiber Bragg grating (FBG) sensor interrogation system based on all fiber Mach-Zehnder Interfer- ......
This paper presents an on-chip measurement circuit to measure multi-giga bit cycle-to-cycle jitter based on the vernier ......
We have studied the spin-dependent electron transmission through a quantum well driven by both dipole-type and homogeneo......
Control of period-one oscillation for all-optical clock division and clock recovery by optical pulse
The period-one oscillation produced by an external optical pulse injection driven semiconductor laser is applied to cloc......
Influence of PVK:NPB hole transporting layer on the characteristics of organic light-emitting device
A doping system consisting of NPB and PVK is employed as a composite hole transporting layer(CHTL) . By adjusting the co......
The stimulated Raman amplification of picosecond Stokes pulse is numerically investigated in ultra-small silicon-on- ins......
A method was developed to solve the combined system of the current field and the circuit. The “super-node” was used to......
