Traditional Chinese Medicine(TCM) , based on the philosophic idea of “correlation between man and nature” and “balance between Yin and Yang” and characterized by “integrated concept” and “syndrome identification & treatment determination”, adjusts and activates the self-recuperating ability to rectify its differentiation from normality of human body thus achieving the goal of preventing and treating diseases by means of traditional Chinese medicinal herbs, acupuncture and moxibustion, etc. The idea of “human should be in harmony with nature including bacterium, virus, etc.，but not to exterminate microbe on a large scale”，held and promoted by TCM gives rise to a delicate physiological equilibrium kept between man and microbe, wich is just the development trend of medical science in the future. For thousands of years, TCM has made indelible contribution to the reproduction and prosperity of the Chinese nation, and under the countless attacks of pestilence has never made its people die in millions such as once occurred in Europe. TCM is also characterized by its “simple, convenient, cheap and effective method of treatment” and is especially good at preventing and treating chronic diseases, complicate multi-system diseases and new-type virus diseases. Therefore, only when the sanitation and healthcare system is established can the health of 1.3 billion people in China and the problem of shortage of doctor and medicine for 900 million rural population and large number of poverty-stricken urban population be solved. It is strongly suggested that five promotion projects, namely TCM policy and statute guarantee, TCM qualified personnel cultivation, TCM scientific research, development of TCM in rural areas and TCM administrative system reform, should be carried out in real earnest to make TCM develop in a sustainable way.
This paper holds that “Star-Bombs” undertaking has influenced the social development of China in five aspects： providing a peaceful international environment for domestic construction; capturing the central height of developing new technology; protruding tremendous economic-social values; breeding a precious national spirit; winning the international standing essential for building new order of international relations.
Micro-electro-mechanical integration system, called microsystem for short is one of forefront technologies at present. The development of microsystem technologies will advance enormously micromation, integration and intelligentize of a lot of products and devices, double the function density, information density and interlinkage density of apparatus and system, save energy and reduce wasts greatly. It has quite wide application and market prospects. The significance of MEMS and its basic theory are expounded in this paper. Performances of MEMS devices used in wireless communication are summarized, and then a proposition that MEMS technology is one of the ultimate resolutions for one-chip wireless communication equipment is concluded. The evolvement status about one-chip mechanical electronic integration microsystem for wireless communication net is introduced.
Applications of ANN to engineering project management were summarized, including prediction and evaluation of risk, cost estimation, performance prediction, organization effectivity, engineering accident diagnoses, claim and litigation analysis, enter bidding decision, schedule/cost optimation and resource leveling. Problems existing in application were summarized and analyzed, some suggestions on how to develop application of ANN to engineering project management in China were submitted.
Objective To study the anti-fibrotic and anti-injurious activities of TCM and autologous bone marrow stem cells transplantation. Methods Acute localized liver injury model was induced in rabbits by injecting ethanol locally, and the liver fibrosis models were reproduced by complex factors (high lipid, low protein, alcohol, CCl4). Liver function was assessed by measurement ALT, AST, TP, ALB, and GST. The necrotic areas were measured by pathological analytic system, and the concentrations of serum of PC III , HA in serum were measured by radioimmunoassay. Histopathological changes and degrees of fibrosis, hydroxyproline content in the hepatic tissues were assessed also. /mPA, CK-18, and BrdU - labeled transplanted cells were determined by immunohistochemical staining. Results In the acute liver injury experiment, the reduction of serum GST levels was remarkable in all treated groups, compared with the model group (P＜0.05 ). The necrotic regions of the treated groups decrease significantly, compared to model group ( P＜0.01). In the inflammatory regions of transplanted rabbits many Brdu-labeled cells were easily observed, most transplanted cells were predominantly in clusters of 1～3 cells each. Part of the cells exhibit the morphology of hepatocyte or bile duct epithelial cells. During liver fibrous experiment, the serum ALT and AST values were reduced significantly in the treated rats (P＜0.01), serum TP, ALB, A/G levels were increased in all animals receiving treatment (P＜0.01 or 0.05), the serum PC ID , HA levels were also reduced remarkably (P＜0.01). Determination of tissue hydroxyproline content confirmed the histological studies, showing a net reduction in total collagen levels. The normal liver tissues showed very weak /xPA expression, and Guiyuan Fang caused a marked increase of /uPA expression in the livers in a dose-dependent manner. The fiPA expression in the autologous BMSCs transplantation group and Guiyuan Fang plus autologous BMSCs transplantation group were the strongest. Double immunohistochemical staining showed the BrdU-labeled cells were fully integrated in the liver parenchyma, along with expression of cytokeratin-18，the liver epithelial specific marker. Some BMSCs have differentiated into hepatocytes or endothelial cells. Conclusion The bone marrow stem cells survive, proliferate, and differentiate in the fibrotic and injurious environment. TCM synergize with bone marrow stem cells to improve liver function, to protect hepatocytes from toxicant, to promote protein synthesis, and to provide a good environment for hepatocyte function. These findings establish the basis for further analysis of BMSCs transplantation in acute and chronic liver diseases.
This paper presents a finite layer procedure for the consolidation analysis of layered soils using a cross isotropic elastic constitutive model. The program is first verified using two published results. Then using this program, the influences of cross isotropy on the consolidation behavior are analyzed. The results obtained using the cross isotropic elastic model are compared with results using isotropic elastic model. It is found that the cross isotropy has very large influences on the consolidation behavior. Curves of the average degree of consolidation are obtained and presented in the paper, which is useful for engineering practice.
In this paper, two basic models of recombination of property right configuration for urban water supply system are proposed. The evaluation index and methodology of property right configuration for urban water supply system are developed using the theory of system economics and management science. The characteristics of the two property right configuration models and actions of different benefit bodies and benefit relationship between different benefit bodies under the two models are opened out. The strong points and shortcomings of the two property right models are analyzed. The means of dealing with the shortcomings are proposed.
The application of extenics in data mining is multi-aspect, and its characteristic is to mine the rule of “unable to able”.The extension method enriches the content of data mining, and provides new tools for building multivalue correlative criteria. The extension data mining model, which is given in this article, is favorable to using existing data for making decision.
The requirements and principles of using photoacoustic gas detection technique in fire detection area are discussed and an unusual photoacoustic gas detection system is presented. Common photoacoustic gas detection systems in laboratories are not suitable for fire warning because of their poor real-time performance and high wavelength qualification for the optical setup. Besides, they are too complex and expensive. These limitations can be solved with a different system design in which an enclosed photoacoustic cell filled with CO is used to achieve CO selection instead of optical filters or laser infrared source. Online CO measurement is realized in an exposed absorption path between the cell and the IR source. At first when there is no combustion gas in the absorption path, the CO cell absorbs the light radiation at 4.6 μm and gives an initial photoacoustic signal. Once combustion gases pass through, the contained CO composition can reduce the radiation that reaches the cell at 4.6 μm and accordingly attenuate the initial photoacoustic signal. Thus CO selection in the absorption path is achieved by enclosed CO itself in the cell, and the photoacoustic signal attenuation further indicates the CO concentration in the absorption path.
A nonflame combustion technology using thermal cyclic carrier of molten salt introduced in this paper is developed based on the knowledge of energy chemistry, fuel cell and combustion. In this technology, a whole combustion is divided into two steps, i. e. section of producing oxide and section of combustion. In the first step, oxygen is separated form air, and pure N<sub>2</sub> is simultaneously left which is easily recovered. In the other step, fuels react with oxides formed in the first step, and at the same time, thermal energy, CO<sub>2</sub> and H<sub>2</sub>O are produced. The CO<sub>2</sub> is easily separated from water vapour and captured. There are theoretically no environmentally-unfriendly gases such as CO<sub>2</sub>，NO<sub>x</sub> and S0<sub>2</sub> discharged in the whole combustion process. A typical nonflame combustion system using Li<sub>2</sub>CO<sub>3</sub> + K<sub>2</sub>CO<sub>3</sub> + Na<sub>2</sub>SO<sub>4</sub> as molten salt system, CH<sub>4</sub> as fuel, CuO as catalyst was experimentally investigated. Experimental results show that the combustion process proceeded as theoretically analyzed, and high concentration CO<sub>2</sub> of 77.0%〜95.0% and N<sub>2</sub> of 91.9%〜99.<sub>3</sub>% were obtained. The high concentration of CO<sub>2</sub> is favorable for capturing and storing subsequently. So, the potential of reducing CO<sub>2</sub> emissions of this nonflame combustion technology is huge.
The CBC - MAC mode is not a parallel one. A parallel authentication mode (PKCB) based on double blocks was put forward in this paper. The PKCB mode had a marked improvement on security & speed over parallel authentication mode, PMAC. And it may be combined with the CTR (counter) encryption mode to form a full block cipher mode. On this ground, another parallel authentication mode (KCTR - MAC) based on key counter was advanced. As compared with the PMAC mode, the KCTR - MAC mode had a marked improvement on security, while its speed did not become lower. The KCTR - MAC authentication mode may be combined with the CTR (counter) encryption mode to form a full block cipher mode (2CTR)，too. The 2CTR mode had a performance advantage over the standard mode, CCM (CTR with CBC - MAC). And it was a fast, practicable mode with security.
In this paper, boundary integral equation method is used to study the hydrodynamic interaction effects between wave and two connected floating structures. The hydrodynamic interaction between the two bodies is considered. The amplitudes of the body motions are determined according to the motion equations of the two bodies and the continuous conditions at the connection between the bodies. In order to verify this method, the heave amplitude at the hinged joint and the relative angular deflection of two floating barges, which connected by a hinge, are calculated and compared with the results from Newman. The comparison shows that the present calculation agrees well with Newman's result except at the nearby of the resonant frequency of the system. At the resonant frequency of the hinged system the present result changes quickly, but Newman did not mention the phenomenon.
Three physical parameters such as the difference in atomic size ratios (△d), the difference of atomic electronegativity ratios (△e) and the ion ratio (v) were calculated by using the weighted average principle on the basis of the present BMG. The critical cooling velocity for forming glass (Rc) of the bulk metallic glass (BMG) was applied as the target parameter for the evaluation of the glass forming ability (GFA). The relation between the three related parameters and Rc was determined by using Origin, the results showed that a minimum was found in the relations between Rc and △d， △e and v，and for different alloy systems, the minimum positions were different one another. As for the BMG with higher GFA, the relations among atom percent, the difference of atomic size ratios and the difference of atomic electronegativity ratios between atom pairs were harmonious. The optimum compositional range of BMG and the optimum addition ratio of additive elements may be related to the minimum phenomena of the relation between three related parameters and Rc.
The dam of Qiaoqi Hydropower Project is 123m high, in which it is the first time for the spreading gradation crushed stone-earth to be adopted as the impervious material for so high an earth — rock dam in China. Study about the engineering application is conducted. First, a lot of experiments about the engineering characteristics are done indoors to analyze the feasibility fo this kind of material in whole material storage, based on which, the control standards of design and construction are recommended. Second, the representative earth sample is selected to verify if the control standard is reasonable by rolling experiments on site. Finally, the three -dimension stress and strain and seepage about the dam body and foundation are calculated to analyze the rationality of the control standard for these materials and the safety factor of the dam under all the actions together. This article states the methods, process and results of the study on the impervious materials and proposes the design and construction control standards for the impervious material used as the core wall.
This Issue
Jul 2004, Volume 6 Issue 7