-This paper gives here the background and basis for the new international electrical reference standards of voltage and resistance that have come into effect worldwide from 1st January, 1990. To keep the international consistency, the magnitudes of voltage and resistance units have increased by 8.90×10-6 and 1.53×106 in China, respectively.
The aim of researching on the ways of grid fault diagnosis is to judge the fault by computer instead of dispatcher and other units, using computer rapid calculation ability, provides the analysis result accurately fast, so that assist dispatcher make rational operation decision after fault occur.
It shows that the output capacity per unit volume and the systematic efficiency of the Switched Reluctance machine system with the three phase double switch power converter and the three phase 6/4 structure machine are superior to those of the Switched Reluctance machine system with the four phase split supply power converter and the four phase 8/6 structure machine, whether the machines are operated as the motor systems or the generator systems.
The unit capacity transformation investment expense is 306. 59 Yuan/kW, and the unit electric power investment of saving is 3294. 16 Yuan/kW.
The practical technique parameters follow as below: the NaOH solution of 14-16mol/L,the temperature of 303-308K,the surface anodic current density of 300A/m2,the unit electrolyzing speed of efficiency larger than 6.0A/L.
In previous work, under some assumptions, we specified a replacement rule which minimizes the long-run (expected) average cost per unit time and possesses control limit property.
By numerical analysis, the fertility decreases with the per capita capital and per capita consumption increasing and increases with the per capita capital and per capita consumption decreasing on the economic growth path are obtained.
The static maximum adsorption capacity of naringin is 32.6 mg/g with naringin concentration at 2.7 g/L, while the dynamic adsorption capacity of naringin is 23.8 mg/g with naringin extract flow rate at two times that of resin volume per hour.
The desorption ratio will rise to more than 85% when the flow rate of this optimal eluant is one to two times that of resin volume per hour.
Detectability of 0.7 mg/l for pseudoephedrine hydrochloride was achieved at a sample throughput rate of 24 times per hour, which is 30% lower than that obtained by HDI-based conventional CE.
This is done by proving that a well-known method, the construction of a Perron Tree, can be applied to a larger collection of subsets of the unit circle than was earlier known.
For p∈(-∞, ∞) letQp(?Δ) be the space of all complex-valued functions f on the unit circle ?Δ satisfying, where the supremum is taken over all subarcs I ? ?Δ with the arclength |I|.
In this article we consider a simple method of radial quasi-interpolation by polynomials on the unit sphere in ?3, and present rates of covergence for this method in Sobolev spaces of square integrable functions.
Toeplitz operators on the Bergman space of the unit disc can be written as integrals of the symbol against an invariant operator field of rank-one projections.
We present a method for constructing wavelet bases on the unit sphere S2 of R3, using the radial projection and an inner product associated to a convex polyhedron having the origin inside.