Along with the progressing of micro-electronics technology and the improving of FPGA's performance, it's more and more common to process digital signals using FPGA. In most cases, FPGA is used to do the preprocessing or postprocessing besides processor in order to get a higher processing speed. This article introduces how to construct the signal processing unit of Doppler measurement system with FPGA and universal digital signal processor.

Based on the construction experiences of our hospital, we in this paper introduce some problems met with in the central gas-supply, and meanwhile we have presented several solutions and preventive measures for the reference of other hospitals.
Delivery of Health Care ; organization & administration ; Equipment Safety ; Equipment and Supplies, Hospital ; Gases ; economics ; supply & distribution ; Maintenance ; Oxygen ; economics ; supply & distribution ; Oxygen Inhalation Therapy ; instrumentation

For a large-scale hospital, management of medical equipment is very important for its economic benefit and development. This paper discusses the implementation of informatization, supermarketization and automatization for medical equipment inventory management with computer network technology.

Background Research showed that the morbidity rate of primary angle closure glaucoma (PACG) in Mongolian population is 3.02 times more than Han nationality population.To understand the cause and mechanism of PACG in Mongolia is of an important significance.Objective This study was to investigate the pathogenesis of Mongolian PACG.Methods Thirty-two eyes of 32 PACG patients in Mongolia and 40 eyes of 40 PACG patients of Han peoples were included in Inner Mongolia Autonomous Region People's Hospital according to the diagnosis criteria of glaucoma group of Chinese Medical Ophthalmology Association (version 1987),and 13 eyes of 13 normal Mongolia and 17 eyes of 17 normal Han peoples who suffered with ocular truma were recruited as controls.Intraocular pressure(IOP) was measured before surgery.The trabecular meshwork tissue was obtained from all the eyes during the operation.Annexinv-FITC/PI double staining was performed and the apoptosis rate of trabecula cells was tested with flow cytometry.Written informed consent was obtained initial of the study.Results The IOP value in Mongolia PACG group,Han PACG group,Mengolia normal group and Han normal group was (35.97±7.11)mmHg,(38.70± 6.82) mmHg,(14.69 ± 2.91) mmHg and (13.59 ± 2.91) mmHg,respectively,showing a significant difference among the 4 groups(F=106.144,P=0.000),and the IOP was significantly higher in the Mengolia PACG group and Han PACG group than the normal groups(P＜0.05).The apoptosis rate of the cells was (7.14±0.67)％,(5.40±0.69) ％,(5.86±0.91) ％ and(2.29±0.65) ％ in the Mongolia PACG group,Han PACG group,Mongolia normal group and Han normal group,respectively,with a significant difference among them (F =174.888,P =0.000),and apoptosis rate of the Mongolia PACG group was significantly higher than that of the Han PACG group and the Mongolia normal group (P＜0.05).No significant difference was found between the Mongolia PACG group and the Han PACG group or between the Mongolia normal group and Han normal group (P＞0.05).The cell apoptosis rate was increased with the elevation of IOP (b =0.990,F=10.209,P =0.009) with the regression equition Y =2.788 +0.092X.Conclusions The apoptosis rate of trabecula cells in Mongolian is higher than Han people.If these results are associated with the high incidence of Mengolia PACG is worth of study.

Conventional digital video acquisition card can only collect but not process video frequency.This paper introduces the design of a digital video acquisition card based on C6000 DSP chip of TI company,which can process digital video automatically and communicate with mainframe through PCI interface.

Based on the physical characteristic of ultrasound, the images of body tissues can be obtained through ultrasonic medical technology, which is another flourishing cross-linked branch of BME after X ray technology. Being non-invasive, painless and reusable, ultrasonic medical technology is suitable for the examination and treatment of the soft tissue. This paper introduces such of ultrasonic technology as its basic principle, developing prospect and application to clinical medicine.

In the field of medical engineering, ultrasonic Doppler technology develops rapidly and gains wide application. MICS-51 is one of the main series of MCU family and has been widely used in China. In this paper, the ultrasound Doppler error detection equipment based on MCS-51 is introduced.

Objective To observe the effects of five flavonoids include rutin(RU),dihydromyricetin(DMY),hesperetin(HP),daidzein(DA)and hydroxysaffor yellow A(HYSA)on myocardiocyte apoptosis induced by H2O2 and to explore their relationships with Keshan disease and the possible mechanism.Methods Primary cultured cardiocytes of neonatal rats were randomly divided into control group,model group,and flavonoids preincubation group.The cardiocyte apoptosis was examined by fluorescent staining,the rates of apoptosis were detected by flow cytometry,the expression of Bcl-2 family proteins associated with apoptosis were observed:by Western blot.Results Compared with model group[(24.33±6.51)%],RU[(13.95±3.80)%],DA[(11.82±3.50)%],HYSA[(12.33±3.78)%]could decreased the rate of apoptosis(P＜0.05).The five flavonoids could up-regulate Bcl-2 expression,down-regulate Bax expression,and increase the Bcl-2/Bax ratio[RU(0.989±0.094),DMY(0.931±0.280),HP(0.980±0.095),DA(1.049±0.092),HYSA(1.031±0.039),vs model(0.490±0.046),the difference had statistical significances(P＜0.05)],but the Bcl-xl did not significantly changed(P＞0.05).Conclusions RU,DMY,HP,DA and HYSA have antiapoptotic effects on cardiomyocyte via regulating Bcl-2 and Bax,which gives us a hint in prevention and treatment of Keshan disease.

The marine biological source of mineral drugs recorded in Chinese Pharmacopoeia (2010 version) mainly including pearl, nacre, clam shell, common oyster shell, ark shell, cuttle bone, and sea-ear shell are widely used in clinical. Calcium carbonate and a small amount of protein are the main components in this type of drugs. In this paper, a systematical and comparable study were carried out by determination of calcium carbonate by EDTA titration method, the crystal of calcium carbonate by X-Ray powder diffraction and the total amino acids (TAAs) of the hydrolyzed samples by ultraviolet spectrophotometry method. As a result, the crystal structure is calcite for common oyster shell, mixture of calcite and aragonite for nacre and sea-ear shell, aragonite for the other drugs. The content of calcium carbonate ranged from 86% to 96%. Cuttle bone has the highest amount of TAAs among the seven drugs which reached 1.7% while clam shell has the lowest content of 0.16% on average. In conclusion, an effective method was developed for the quality control of marine mineral drugs by comprehensive analysis of calcium carbonate and TAAs in the seven marine mineral drugs.
Amino Acids ; analysis ; chemistry ; Animal Shells ; chemistry ; Animals ; Calcium Carbonate ; analysis ; chemistry ; Crystallization ; Edetic Acid ; chemistry ; Mollusca ; chemistry ; classification ; Pharmaceutical Preparations ; analysis ; chemistry ; standards ; Quality Control ; Reproducibility of Results ; Seawater ; Species Specificity ; Spectrophotometry, Ultraviolet ; X-Ray Diffraction

Objective To investigate influence of mirtazapine on polysomnograpy (PSG) of depression dysphylaxia patient and treatment effect.Methods 22 dysphylaxia patients and 22 healthy contrast persons were detected by PSG.The group of dysphylaxia patients were re-detected PSG 6 weeks later after treatment by Mirtazapine.In order to evaluate the patient' symptoms of depression and early awakening,the scale of HAMD was utilized at the time before and after 2 weeks,6 weeks treatment by mirtazapine.To compare changes of PSG index,HAMD scores and dysphylaxia scores before and after treatment.Results Compared with healthy controls,there existed much deviation with dysphylaxia patients on PSG index.6 weeks after mirtazapine treatment,the PSG showed the sleeping latency had shortened to ( 16.9 ± 6.6) min,sleep efficiency had improved ( 85.4 ± 6.7 ) ％,awake time had shortened (27.7 ± 10.4)min,sleep maintenance rate had risen (87.9 ±5.3)％,decrease (9.7±4.1 )％ of the S1 sleeping stage percentage,S2 had increased ( 148.0 ±30.7)％,REM density had decreased (56.1 ±3.8)％.the difference was significant (P＜0.05).The scores of HAMD and early awakening after treatment were significantly lower than before treatment,the difference was significant (P＜0.01 ).Correlation analysis showed there was no significant correlation between the HAMD,dysphylaxia reduced rate and changes of PSG all indicators(P ＞ 0.05 ).Conclusion It may be one of the biological markers for dysphylaxi in shortened of REM sleep latency,prolonged of REM sleep time and increased of REM activity and density.There is no correlation between post-treatment changes of PSG.