Showing papers by "Shanghai University published in 1989"
TL;DR: By using the first-order small parameter perturbation method, the basic lubrication equations have been derived for a power-law non-newtonian fluid as mentioned in this paper, and the reasonable ranges of working conditions, in which the approximate equations can be used, have been determined in the light of the error analysis for the perturbations.
17 citations
Journal Article•
TL;DR: It is suggested that combination of multiple treatment modalities may provide an important approach to treat moderately advanced liver cancer.
Abstract: A comparative study of multiple modalities, radioimmunotherapy combined with cisplatin and MBV was made. The tumor size and macrophage activity (acid phosphatase) were measured after treatment. The results showed that the tumor inhibition rates were 48, 55, 74, 76, 79% in radioimmunotherapy, cisplatin, radioimmunotherapy + MBV, radioimmunotherapy + cisplatin and radioimmunotherapy + MBV + cisplatin groups, respectively. Radioimmunotherapy was effective in controlling tumor growth, especially in sequential treatment by two injections. Both cisplatin and MBV could increase therapeutic effect of radioimmunotherapy. Therefore, combination of the three modalities is the best choice for tumor growth control. The effectiveness of MBV may be related to the increase of macrophage activity. Preliminary clinical results were satisfactory. Decline in serum AFP level and shrinkage of tumor were observed in 80% (12/15) and 65% (13/20) of the patients. It is suggested that combination of multiple treatment modalities may provide an important approach to treat moderately advanced liver cancer.
4 citations
3 citations
Journal Article•
TL;DR: In this paper, the results show that simple mode or mode Ⅰ loading is more susceptible to hydrogen embrittlement than (Ⅰ+Ⅱ) mixed mode.
Abstract: Hydrogen induced cracking of 0.3% C,1% Cr, 1% Mn, 1% Si highstrength steel has been studied under simple mode Ⅰ, mode Ⅱ and (Ⅰ+Ⅱ) mixedmode loading conditions. After being hydrogen-charged in 1N H_2SO_4 solution, thematerial behaved hydrogen embrittlement in all the cases studied. The results showthat simple mode Ⅰ or mode Ⅱ loading are more susceptible to hydrogen embrittle-ment than (Ⅰ+Ⅱ) mixed mode. For explaining the experimental results, the effectsof hydrostatic tension as well as plastic deformation ahead of crack tip has beendiscussed.
2 citations
TL;DR: This article explores why this is so under the following headings: problems of language and translation; the absence of subscription information in the most popular North American selection tools: and problems resulting from how journals are distributed within the PRC itself.
Abstract: There are currently about fifty-five library and information science journals being published in the People's Republic of China. Few are available to the North American library user. This article explores why this is so under the following headings: (1) problems of language and translation; (2) the absence of subscription information in the most popular North American selection tools: and (3) problems resulting from how journals are distributed within the PRC itself. In addition, names, addresses and other subscription information are provided, as well as a semi-critical analysis at both the collective and individual journal levels.
2 citations
TL;DR: In this article, the authors proposed a linear prebuckling consistent theory for hyperbolic cooling tower shells with ring-stiffeners and obtained a series of conclusions which will greatly benefit the engineering design when discussing the critical wind loading of the shell which is caused by the following factors such as the position of rings, the number of rings and the dead weight.
Abstract: With the stability analysis of hyperbolic cooling tower shells with ring-stiffeners, our paper proposes the linear pre-buckling consistent theory. The numerical result shows that this linear analysis method is very effective and practical in engineering, for its precision of computation is up to the level of the nonlinear analysis when it is used for the study of critical loads of the hyperbolic cooling tower which is mainly governed by wind pressure and for the study of the effect of some other factors concerned in design on the buckling of shells. Based on that, we have obtained a series of conclusions which will greatly benefits the engineering design when discussing the effect on the critical wind loading of the shell which is caused by the following factors such as the position of rings, the number of rings and the dead weight.
1 citations
TL;DR: In this article, it was proved that the problem has infinitely many solutions, wherep is a prime andP 2 is an almost prime with at most two prime factors, where p is a constant and P 2 is a almost prime.
Abstract: LetN be a sufficiently large even integer and
$$\begin{gathered} q \geqslant 1, (l_i ,q) = 1 (i = 1, 2), \hfill \\ l_1 + l_2 \equiv N(\bmod q). \hfill \\ \end{gathered} $$
. It is proved that the equation
$$N = p + P_2 ,p \equiv l_1 (\bmod q), P_2 \equiv l_2 (\bmod q)$$
has infinitely many solutions for almost all\(q \leqslant N^{\frac{1}{{37}}} \), wherep is a prime andP 2 is an almost prime with at most two prime factors.
1 citations
Journal Article•
TL;DR: In this article, a comparison of subcutaneous, intraperitoneal and intrahepatic transplantations in rat bearing hepatocellular carcinoma was carried out and the results indicated that the tumor growth condition provided by body sites is different.
Abstract: Biological characteristics of the tumor may be different in various growth sites. Comparison of subcutaneous, intraperitoneal and intrahepatic transplantations in nude rat bearing hepatocellular carcinoma was carried out. The previous characteristics of histologic morphology, cell type and synthesis of AFP were still preserved in those three transplantations. The successful transplantation rate was high, latent stage short and speed of the tumor growth fast in the subcutaneous route. AFP level was the highest in intrahepatic route. Successful transplantation rate was high, latent stage short and speed of the tumor growth fast in the intrahepatic route as compared with intraperitoneal route. Tumor invasion and metastasis were often observed in intraperitoneal and intrahepatic routes. The results indicate that the tumor growth condition provided by body sites is different. Tumor invasion and metastasis are related to the tissue environment besides its potential. Each of the three routes has its advantages and disadvantages which should be selected according to different requirement for cancer research.
1 citations
01 Mar 1989
TL;DR: In this paper, the dynamic stability of a long slender rod sagging under gravity and taking the shape of a plane curve is considered, and the instability regions and the response in these regions are studied.