Objective To study the body composition of public security staffs and to prevent sub-health condition positively. Methods Body compositions of 771 public security staffs were measured and analyzed with bioelectrical impedance analytic process (BIA). Results The male public security staffs had obviously lower body fat percentage (P< 0.01) but higher body mass index and obesity (P<0.05) than female public security staffs. Both male and female public security staffs fad the highest content of fat in the lower limbs. The body part ranked the second place, followed by the upper limbs. Measured by body-fat percentage(BF%), the obesity rate of the male and female staffs was 10.08% and 45.59% respectively. Measured by body mass index (BMI), the hypergravity rate of the male and female staffs was 44.09% and 20.59% respectively; and the obesity rate of the male and female staffs was 8.35% and 0.74% respectively. Measured by obesity degree (OBD), the hypergravity rate of the male and female staffs was 21.73% and 4.41% respectively; and the obesity rate of the male and female staffs was 11.65% and 1.47% respectively. Conclusion Public security staffs should pay attention to their over-weight and hyper-fat level. Proper dict and body exercise are needed.

ObjectiveToestablisharatmodelofincreasedbloodflow-inducedpulmonaryarterialhypertension generatedbyanastomosisoftheleftcommoncarotidarterytoleftexternaljugularvein.Methods 45maleSDratswere divided into three groups:the shunt group , the ligation group and the sham group .At twelve weeks after the procedure , the general status of the rats was observed . Heart conditions , cardiac output and shunt patency were measured by echocardiography .Right ventricular systolic pressure ( RVSP ) and Qp/Qs were checked by catheterization . Right ventricular hypertrophy index ( RVHI) was calculated and lung tissues were examined by pathology using hematoxylin -eosin and elastin Van Gieson staining .All data were analyzed statistically by one-way ANOVA test using SPSS 16.0.Results There was no significant difference in body weight gains between the groups .The patency rate of shunt was 84.6%.The heart was enlarged in the group shunt .Cardiac output increased significantly in the shunt group than that in the other two groups [(309.8 ±33.1) mL/min?kg vs.(245.6 ±31.9) mL/min?kg, (240.8 ±30.9)mL/min?kg, respectively, P<0.05].In the shunt group Qp/Qs was 2.16 ±0.38 and RVSP increased to (35.8 ±4.9) mmHg, RVHI was 0.3263 ± 0.0342, significantly higher than that of the other groups .The pulmonary arteriolar wall was evidently thickened in contrast to that in the sham group [ ( 22.3 ±1.7 )% vs.( 10.6 ±1.7 )%, P <0.05 ) .Conclusions Anastomosis of the left common carotid artery to left external jugular vein can successfully establish pulmonary arterial hypertension model induced by high blood flow in rats .