Dynamic Analysis Techniques for Coastant Speed Power Transmission of 400 c.p.s. A-C Electric-energy System in Aircraft——Dynamic Study of a Nonlinear Mechanical-electro-hydraulicComplex Control System.
The Application of Transonic Velocity Potential Equation with Higher Order Approximation for Computing the Pressure Distribution over the Blunt Leading-edge Airfoil
Methods:The lymphocyte subpopulations(CD4+,CD8+,CD25+,CD4+CD25+,CD8+CD25+,CD4+CD25+CD62L+ T cells) in peripheral blood mononuclear were in 24 LADA, 18 type 1 diabetic with rapid progression, and 20 normal control by flow cytometric.
Under this conditions the plating rate is rapid、 the solution of plating is steady、 the film is brightness. The contents of the film are P 7.48%、 Sn 12.76%、 Ni 78.12% and Fe 1.64%. The hardness of the film is 487.14HV.
When x=0.2,the quenching rate increased from 0 m/s to 30 m/s,the discharge capacity of the alloys decreased from 390 mAh/g to 350 mAh/g,the cycle life of the alloys was enhanced from 82 cycles to 116 cycles. But the improvement of the rapid quenching technology on the cycle life of La-Mg-Ni system hydrogen storage alloys was very limited.
The results are that the delicacy of xingling, SN-1A rapid determining apparatus and RP-410 rapiddetermining apparatus to methamidophos are 1mg/kg. CL-1 determining apparatus 2 mg/kg. and Suceling determiningreagent Ⅰ 3 mg/kg.
More particularly, Genetic Algorithms, Artificial Neural Networks and Fuzzy Logic methods seem to be the most promising tools to speed up and optimize the search for new leads and focused libraries.
As supersonic speed at upper reaches and subsonic speed at lower reaches in a duct, the position of shock layer is analyzed and the asymptotic estimation of solution, is obtained.
For compactly supported gm, n (FIR filter banks) we prove an exponential rate of convergence and derive explicit expressions for the involved constants.
Specifically, the assumptions on initial data are that the modulo constant is stated at x=+∞ and x=-∞ which may be different, the density and velocity are in L2, and the density is bounded above and below away from zero.
The wind turbine imitation system includes not only a hardware platform composed of PC, data-collection board and thyristor-based velocity-regulator, but also monitor software of wind turbine imitation.
The threshold wind velocity of a number of variables was studied in four different land-use types: farm land, forestland, wild grassland and a flood plain in the Yongding River sandy land in Beijing.
The use of time-frequency methods (phase space methods) allows the use of rough symbols of ultra-rapid growth in place of smooth symbols in the standard classes.
The pharmaceutical sciences are advancing rapidly in the post-genomic era of the 21st century with the completion of the human genome, as well as those of many other organisms including bacteria and parasites, and the rapid advances in proteomics.
The α-isomer exhibited rapid and significantly higher peak plasma concentrations in all the species post intramuscular administrations, while β-isomer showed prolonged plasma levels.
Self-recording system is devised and used to measure potential gradient at Yenching. In fine weather the results show two maxima and two minima for a whole day. During raining potential gradient is constant at zero value, except when lightening and thunderstorm occur in which case the potential gradient changes rapidly both in magnitude and direction.
The phenomellon of limiting heating is of vital importance and interest in the study of gas' flow through a tube with heat additioll fi.om both theoretical and practical points of view. In particular, it has applications to the design of thel.mal ducts of pl'opulsive devices for high speed aircraft. TI}ils poper col,sists of a prelimillary "study Of limiLing'heating for the;(jfole case of a perfect gas in steady flow through a tube of unifornl cross section. It starts from tile fulldamelltal laws governi...
An electrophotometric method has been worked out for the determination of magnesium in cast iron using titan yellow as indicator.Briefly,the method consists of dissolving the sample in dilute sulphuric acid,separating iron and other metals such as copper and nickel by electrolysis with mercury cathode and precipitating manganese from ammoniacal solution with ammonium persulfate.Ammonimn salt,silica and traces of aluminaare thenremoved. Finally,the prepared titan yellow reagent is added to the solutionand th...