As a substitute of the traditional auscultoscope, the midget ultrolow power consumption ECG auscultoscope combines the traditional one with the electrocardiograph, which is easy to operate and carry.

Medical vacuum knife (MVK) is a new approach for liver surgery. This paper introduces its principles and applications. Some detailed issues related to MVK are also presented such as its differences from other methods, its development and application perspective to abdominal surgery.

The latest domestic and foreign development of artificial vision technology is introduced in this paper. Its prospect and feasibility in China are mentioned too.

This paper introduces the applications of network technology, wire and wireless technologies to designs of medical equipments. The theories and applications of such technologies are presented as the ones of serial communication, concurrent communication, USB interface, Bluetooth HomeRF, wireless network communication and GPRS.

Objective To investigate the circadian change of autonomic nervous system in hyperthyroidism (HT) patients. Methods Recording 24 h dynamic electrocardiography from 33 HT patients( HT group) and 35 controls (control group). The cardiac autonomic nervous function was evaluated by the time domain and frequency domain analysis of heart rate variability( HRV). Results Comparing with control group, the SDNN, SDANN, ASDNN and rMSSD were significantly lower in HT group[ (82.3 ± 29.0)ms vs. (139.4±40.2 ) ms, ( 75.0 ± 27.4) ms vs. ( 130.3 ± 43.9) ms, (29.9 ± 14.9 ) ms vs. (57.3 ± 14.4) ms,( 19.8 ± 10.9 ) ms vs. (29.5 ± 9.4) ms ] (P ＜ 0.01 or ＜ 0.05 ), the long term total power (TP), high frequency (HF), low frequency (LF) and very low frequency (VLF) were significantly lower in HT group [ (566.1±573.2) ms2/Hz vs. ( 1894.2 ± 984.3)ms2/Hz, (68.1 ± 88.9 ) ms2/Hz vs. (232.7 ± 155.5 ) ms2/Hz, ( 127.4 ±163.0) ms2/Hz vs. (551.3 ± 390.6) ms2/Hz, (330.3 ± 300.6) ms2/Hz vs. (1073.2 ± 570.2) ms2/Hz] (P ＜0.01 ). Comparing with control group, short term VLF was higher in HT group during most time in 24 hours (P＜ 0.05 ). Short term LF was higher in HT group mainly in day time (P＜ 0.05 ). Short term HF was higher in HT group occasionally in the whole day (P＜0.05). Short term LF/HF didn't show significant difference between HT group and control group at most time points (P＞0.05).Conclusion In HT patients, cardiac chronotropic property is impaired, sympathetic activity increases in whole day, vagal activity increases correspondently but the increase in day is more marked than that in night.

This paper introduces an assist system for the blind.It utilizes ultrasonic to measure the distance and speed.Then the distance signal is converted to position of slip block and the speed signal is converted to tone.The main function of this sytem is to assist the blind to determine distance and speed of objects.It is practical,Simple and inexpensive.

Objective To explore the epidemiological features of the metabolic syndrome in a cohort study of Xiangtan Mengkuang in China.Methods The prevalence rate,means and standard deviation of various risk factors associated with metabolic syndrome were analysed on the basis of base-line survey of risk factors of 5792 subjects(aged 25 years-old～) in 2004.Results (1)The prevalence rate of metabolic syndrome was 12.9%(12.4% in males,and 13.7% in females,P

Ultrasonic estimation of fetal weight is important in the management o f labor and delivery. Lots of charts and formulas have been put forward in virtu e of regression methods. Artificial neural network, a kind of computer artificia l intelligence technology, can simulate human thinking based on neural structure and physiology. With the excellence in complex and non-linear information proce ssing, artificial neural network is fitter for the forecasting of fetal weight t han traditional regression methods.

A buofulm reactor ( BFR ) was fabrucated vua a cultuvatuon process usung naturally occurrung mucrobual seeds from locally collected wastewaters, and a serues of researches were carrued out wuth thus BFR based onlune Buochemucal Oxygen Demand ( BOD) monutor. The results showed that the BFR cultuvatuon tume was less than 14 h, and the buodegradatuon effucuencues was 18. 5%. The munumum detectuon lumut was 0. 5 mg/L, as well as the upper detectuon lumut was 20 mg/L. The relatuve error and relatuve standard devuatuon un accuracy and long term stabuluty to standard were -0. 8% and ±3. 2%, respectuvely. The real sample determunatuons showed an average relatuve error of +5. 6% to conventuonal BOD5 method. The BFR mauntauned a good performance un long term stabuluty and accuracy durung thus test peruod, and the broad lunear range ensured the demand for surface water onlune monutorung.

Objective:To investigate the effects of the anti-TLR2 antibody blocking TLR2 signaling pathway on inflammatory response in Staphylococcus aureus pneumonia murine models.Methods: Sixty C57BL/6J mice were divided randomly into normal control,SA pneumonia,and anti-TLR2 antibody group,killed 3 and 8 days after inoculation respectively.Normal control mice inoculated sterile PBS intranasally ,SA pneumonia mice inoculated SA ,anti-TLR2 antibody group of mice injected with anti-TLR2 antibody by tail vein and then inoculated SA intranasally.At the predetermined point , the colony-forming units ( CFU ) of bacteria were higher , leukocytes and neutrophil percentage were counted in bronchoalveolar lavage fluid ( BALF ) , the concentrations of KC and IL-10 in BALF and serum were assayed by ELISA ,changes in pulmonary histopathology were observed with HE staining and TLR 2 expression was detected by immunohistochemical.Results:3 days after intranasal inoculation ,the concentrations of KC and IL-10 in BALF and serum was increased in SA pneumonia mice , pulmonary histopathology changes significantly in HE staining.Compared with SA pneumonia mice,the CFU of bacteria were higher,leukocytes count and neutrophil percentage ,the concentrations of KC in BALF and serum,as well as HE pathological scores were reduced significantly in anti-TLR2 antibody group mice ,while no significant difference in IL-10.8 days after intranasal inoculation , HE pathological scores of anti-TLR2 antibody group mice were significantly lower than SA pneumonia group mice ,the CFU of bacteria in BALF were not statistically different between those two groups.Conclusion:Anti-TLR2 antibody attenuates the production of inflammatory mediators and inflammatory cell infiltration in SA pneumonia mice .