Periodicals as Topic

Technical standards were supports that not only for any profession’s development, but also for the basic means of modern quality control.Forensic clinical medicine has developed nearly 40 years in china, there are 23 normative technical documents at present, the range of its application has been expanding with time, the caseload has been more than 1 million pieces per year all the country. Reviewing these standards, it can be seen: Technital standard of forensic clinical medicine has absorbed a large number of advanced international ideas, assimilating plenty of practice experience at the same time, standard's system has been initially formed, it has become one of the important means to guarantee the quality of medicolegal expertise. Certainly, the construction of forensic clinical standardization in China is still an arduous task, there are also many outstanding contradiction in the existing standards, our studies on international standards were not in-depth, and so on. In the future, forensic science experts still need to strengthen the companion study of technical standards and laws or regulations, intensify tracing and evaluating of international standards in order to form more adaptive and advanced technical standards.

Burns ; Periodicals as Topic

The theory of cancer stem cells proposed that recurrence and metastasis of liver cancer are closely related to liver cancer stem cells.The traditional surgical treatment of liver cancer simply kills those rapidly proliferating tunor cells instead of eliminating hepatic cancer stem cells which play decisive role in recurrence and metastasis.As far as people have concerned,there are many signaling pathways and regulatory factors modulating liver cancer stem cells,such as the Wnt/β-catenin pathway,TGF-β pathway,Notch pathway,Hedgehog pathway,hepatitis B virus,as well as epigenetics.Further studies on regulatory mechanisms of liver cancer stem cells are of great significance,in hope of providing new evidence for treatment and prevention of recurrence and metastasis of liver cancer.

Objective To study the expression of inducible nitric oxide synthase (iNOS),endothelial nitric oxide synthase (eNOS) and vascular endothelial growth factor (VEGF) in human gastric cancer and their relationship with tumor angiogenesis and to investigate the interaction of NOS and VEGF in gastric cancer.Methods The expression and distribution of VEGF, iNOS and eNOS in 34 gastric cancer specimens were detected with immunohistochemistry. Microvessel density (MVD) was counted with FⅧRAg immune specific staining.Results The expression rates of iNOS, eNOS and VEGF in 34 gastric cancers were 73.5%, 82.4%and 91.2%respectively. The expression of VEGF had a significant positive relation with iNOS, but not with eNOS. The MVDs of VEGF or iNOS positive gastric cancers were obviously higher than those of VEGF or iNOS negative gastric cancers. There was no significant difference between the MVDs of eNOS positive gastric cancers and eNOS negative ones. Conclusion MVD increases with increase of expression of VEGF and iNOS in gastric cancer. It is indicated that VEGF and iNOS can promote gastric cancer angiogenesis. VEGF and iNOS have a significant positive correlation, which suggests that in human gastric cancer, iNOS plays an important role in the production and action of VEGF.

Dendritic Cells ; pathology ; Hematologic Neoplasms ; diagnosis ; therapy ; Humans

Changes in heart rate of fetal is function regulating performance of the circulatory system and the central nervous system, it is significant to detect heart rate of fetus in perinatal fetal. This paper puts forward the fetal heart rate detection method based on short time Fourier transform and blind source separation. First of all, the mixed ECG signal was preprocessed, and then the wavelet transform technique was used to separate the fetal ECG signal with noise from mixed ECG signal, after that, the short-time Fourier transform and the blind separation were carried on it, and then calculated the correlation coefficient of it, Finally, An independent component that it has strongest correlation with the original signal was selected to make FECG peak detection and calculated the fetal instantaneous heart rate. The experimental results show that the method can improve the detection rate of the FECG peak (R), and it has high accuracy in fixing peak(R) location in the case of low signal-noise ratio.
Electrocardiography ; Fetus ; Heart Rate, Fetal ; Humans

Objective　In order to understand situation and need s for health education of AIDS prevention in high school students in Anhui. Methods　1 617 students from 12 schools in 4 prefectures were sur veyed with questionnaires. Results　More than 50% students got the i nformation from newspaper, broadcasting, TV. Only 7.5% and 4.7% st udents acquired the info rmation from the subject lectures at school level and class level respectively. 14.4% students attended health education activities f or AIDS prevention. 10.9% students received relevant pro paganda materials, 77.8% students had never seen condom, 44.1% students knew the function of condom, and 8.6% students approved of premarital sexual life, of wh ich , ratio of male students were significantly higher than that of female students. More than 70% students were willing to care and help patients with HIV infectio n. Conc lusions　It is necessary and possible to develop health education for AI DS prevention in high school students. It is an important measure to develop hea lth education to block HIV transmission.

After being restored, 69 cases of the two-implant-supported crowns were followed up for 5 years. Except 1 case failed after restored 5 years due to peri-implantitis, and there were no complications which can not be controlled in the other cases. The success rate of implant restoration in 5 years is 98.6%. The two-implant-supported single crown for molar is an effective method to restore the long gap of a single molar-loss.

Nowadays,antiplatelet and anticoagulant drugs have been applied to a variety of cardiovascular diseases,such as atrial fibrillation and coronary artery disease.Several clinical studies show that there is a higher prevalence of gastrointestinal cancers in patients with cardiovascular disease.In addition,in patients taking antithrombotic drugs,positive fecal occult blood test (FOBT) improves the sensitivity for early detection of colorectal malignancies.This suggests that antithrombotic drugs may facilitate the detection of unrecognized cancers in patients with cardiovascular disease.However,there is no established evidence concerning whether more aggressive gastrointestinal tract screening will reduce the mortality of cancer in cardiology patients.But in an era of multiple antithrombotic drug usage,when patients appear unexplained anemia,gastrointestinal symptoms or positive FOBT,timely gastrointestinal tract screening is helpful to find concomitanted malignancies in these patients.