This paper applies two kinds of methods to get the theoritic condition of not-rotation: the equation derived from the differential formula and verified on vector analysis.

METHODS To get the permeation kinetics profiles of diclofenac sodium gel in vitro, periodic squarewave direct current with on/off ratio of 1:5, 1:3, 1:1, 3:1, 5:1 (frequency 1.7 kHz) and frequency of 0.4, 0.9, 1.7,2.8,4.0 kHz (on/off 5:1) was selected, respectively.

At the same time, it points out that homogeneous advanced oxidation processes (H2O2/UV and O3/H2O2/UV) are effective methods to get rid of ortho-dichlorobenzene in water.

In order to study its lipid metabolism as well as its evolutional relationship with other lower percoids, we used RT-PCR and RACE methods to get the cDNA sequences of NPY, UCP2, LPL and HL gene, and deduced their corresponding amino acid sequences.

In the first part of this work a model-system has been investigated by numerical-theoretical methods to get an idea of the electron paths inside the gun as well as to estimate the highest obtainable perveance of the gun.

This is both labor and capital intensive and practitioners quickly began investigating other methods to get a measure of spatial variability.

An analysis of the experimental curve Cp (T) for UAs has been carried out by several different methods to get the magnetic contribution to the specific heat with the best possible accuracy.

The UV-attenuating effect was confirmed in the UVA region (320-400 nm) and the heat treatment after immobilization was one of the effective methods to get higher transparency for visible light.

We examine the use of penalty methods to get around these difficulties and provide substantial numerical results.

In this paper, the topic on the method of analysing the NMR spectra in liquid crystal solvents is briefly reviewed from a more unified point of view, though the major parts are mainly out of the treatise written by Emsley and Lindon as well as some other articles in this field. But our discussions are only limited to those systems to be solved exactly to give solutions with closed analytical forms. No attempt has been made in discussing the numerical methods by using computer simulation.This review...

In this paper, the topic on the method of analysing the NMR spectra in liquid crystal solvents is briefly reviewed from a more unified point of view, though the major parts are mainly out of the treatise written by Emsley and Lindon as well as some other articles in this field. But our discussions are only limited to those systems to be solved exactly to give solutions with closed analytical forms. No attempt has been made in discussing the numerical methods by using computer simulation.This review includes three parts: In part(1)we concentrate our attention to discussing the method to get the general expressions of AB_n and AB_nX spin systems. Systems of A_n, AB, AB_2, AB_3, ABX, in Emsley's treatise are all the special cases of our general expressions. In part(2), AA′A″A A system with C_(5v), symmetry is discussed in detail for illustration. In part(3), we deal with the spin systems having quadrupolar nuclei and then the expressions obtained in a unified fashion. Some mistakes happened in the original reference books and papers are corrected as well.

Vibrational relaxation processes and data of CO2-N2-H2O laser system up to now are surveyed. The data before 1968 are based on Taylor & Bitterman's review. The data are treated with weighed least square method to get best fit in the form of log10K=A+BX+CX2+ DX3, and the corresponding coefficients are presented. Using these best fits of data and relaxation model with three modes and four vibrational temperatures based on present work, numerical calculation results of small signal gain of GDL agree with...

Vibrational relaxation processes and data of CO2-N2-H2O laser system up to now are surveyed. The data before 1968 are based on Taylor & Bitterman's review. The data are treated with weighed least square method to get best fit in the form of log10K=A+BX+CX2+ DX3, and the corresponding coefficients are presented. Using these best fits of data and relaxation model with three modes and four vibrational temperatures based on present work, numerical calculation results of small signal gain of GDL agree with experiments, thus eliminating the error introduced by the uncertainties of relaxation data and modle.

Pyrolysis of ethane and propane will liberate ethylene, a valuable and basic material for the synthesis of organic chemicals.As far as we know there is no appropriate method to get the designing parameters of pyrolysis furnace such as the heat flux pattern other than liy the emprical rules commonly used.This paper will present a rigorous method of designing a pyrolysis furnace for this purpose.Based upon Hottels idea, the zone method is adopted for calculating the radiative heat transmission....

Pyrolysis of ethane and propane will liberate ethylene, a valuable and basic material for the synthesis of organic chemicals.As far as we know there is no appropriate method to get the designing parameters of pyrolysis furnace such as the heat flux pattern other than liy the emprical rules commonly used.This paper will present a rigorous method of designing a pyrolysis furnace for this purpose.Based upon Hottels idea, the zone method is adopted for calculating the radiative heat transmission. Taking it briefly, the whole system is divided into surface zones and gas zones separately. The temperature profiles in a furnace are described by solving a series of energy balance equations in each zone simultaneously.Due considerations of these factors concerned such as reaction kinetics, convective heat transfer and pressure drop was taken the distribution of the resulting material as well as the temperature distribution of processing gas, flue gas, tube surface and the surface of the refractory wall in the reactor could be predicted appropriately.A comparison was made and which reveals that the calculating results obtained with this method check well with the data actually taken from the working plant in practice.