[Research progress in modern clinical application and mechanism of Guizhi decoction].

Guizhi decoction come from Typhoid Theory written by Zhang Zhongjing, a famous physician in the Han dynasty. It is called "the leading group of the group" by later doctors. At present, Guizhi decoction is widely used in treatment of many diseases of internal, external, gynecologic and other diseases.

Investigation of temperature-dependent photoluminescence in multi-quantum wells.

Photoluminescence (PL) is a nondestructive and powerful method to investigate carrier recombination and transport characteristics in semiconductor materials. In this study, the temperature dependences of photoluminescence of GaAs-AlxGa1-xAs multi-quantum wells samples with and without p-n junction were measured under both resonant and non-resonant excitation modes. An obvious increase of photoluminescence(PL) intensity as the rising of temperature in low temperature range (T < 50 K), is observed only for GaAs-AlxGa1-xAs quantum wells sample with p-n junction under non-resonant excitation.

Temperature-dependent photoluminescence in light-emitting diodes.

Temperature-dependent photoluminescence (TDPL), one of the most effective and powerful optical characterisation methods, is widely used to investigate carrier transport and localized states in semiconductor materials. Resonant excitation and non-resonant excitation are the two primary methods of researching this issue. In this study, the application ranges of the different excitation modes are confirmed by analysing the TDPL characteristics of GaN-based light-emitting diodes.

[Correlation between syndrome factor combination and cardiac function as well as blood-lipid in coronary heart disease].

Objective: To discuss the distribution laws of traditional Chinese medicine (TCM) syndrome factor and their combination in coronary heart disease (CHD), and to study the correlation between the TCM syndrome factor combination and cardiac function as well as blood-lipid.

Methods: The parameters of the cardiac function of 300 patients with a final diagnosis of CHD by coronary angiography were measured by echocardiography, and the levels of blood lipids in the CHD patients were detected. An analysis of the correlation was done between the TCM syndrome factor combination and cardiac function as well as blood-lipid in CHD.

[Factor analysis of traditional Chinese medicine syndromes in 815 patients with unstable angina].

Objective: To explore the laws of traditional Chinese medicine (TCM) syndromes in unstable angina, and to establish the preliminary diagnostic criteria for TCM syndromes.

Methods: Multi-center prospective research on TCM syndromes in 815 cases of unstable angina was done with the nonlinear dimension reduction by factor analysis.

Results: There were five extracted factors in factor analysis: F1, F2, F3, F4 and F5.

[Study on the therapeutic status of 1242 hospitalized acute myocardial infarction patients in Beijing].

Objective: To investigate and analyze the therapeutic level and the existing problems on acute myocardial infarction (AMI) management in Beijing.

Methods: We collected clinic data of 1242 AMI patients from 12 hospitals in Beijing, from January 2000 to March 2001, using a uniformed questionnaire, and evaluated the status of the diagnosis and treatment of AMI according to the Chinese guidelines issued on Decmeber 2001. Corresponding factors which influencing the mortality were also analyzed by one-way factor and multiple factors analysis methodologies.

[An investigation on clinical studies of TCM in preventing and treating angina pectoris of coronary heart disease].

Objective: To analyze the current status of clinical studies of TCM in preventing and treating angina pectoris of coronary heart disease.

Methods: A statistical analysis of articles regarding the use of TCM in preventing and treating angina pectoris, published in TCM core journals or journals of TCM university (college) from January 2001 to June 2002 was conducted, the items analyzed included the differentiation of stable angina (SA) and unstable angina (UA), the grading or stratifying, standard for therapeutic efficacy evaluation, standardized drug therapy of UA (according to the "Suggestion on the diagnosis and treatment of UA" formulated by Society of Cardiovascular Disease, Chinese Medical Association, etc.

Results: From the 44 articles that retrieved, UA and SA was not differed in 29 articles (65.