Objective To evaluate the capacity of air quality test of indoor air quality test agencies in Beijing. Methods 59 laboratories participated the evaluation. The standard reference (SRF) material, ammonia and benzene, were used as the test items and the national standard methods were used in the determination, the capacity evaluation was done by comparing the test values and Robust Z-Score. Results 28 laboratories (47.5%) presented a satisfactory result for both ammonia and benzene determination, 3 gave an unsatisfactory result for both items, 28 showed an unsatisfactory result or a result with some error in alternative1 item. Conclusion In the present study, only 47.5% of the investigated laboratories are satisfied. There are still some problems in the capacity of air quality test of test agencies in Beijing and the test capacity need to be improved.

The preocular tear film has recently been described as a bilaminar structure,including lipid layer and aqueous/mucin gel layer.The lipid layer has two phases,a relatively thick outer layer,containing nonpolar lipids such as wax esters,sterol esters,hydrocarbons, and triglycerides;and a thin polar inner layer,predominantly consisting of phospholipids.It s confirmed that there are differences in meibomian fatty acid composition between healthy and evaporative dry eye patients.Thus,therapies targeted at replenishing or stabilizing the lipid layer are key points to the treatment of evaporative dry eye,either as monotherapy or in conjunction with therapies designed to enhance aqueous production.

Objective To introduce the key issues of image registration in radiotherapy and study the performances of the three kinds of registry ways based on gray-scale registration, included mean-square measure, normalized correlation measure and mutual information measure. Methods After analysis of elements of the matching algorithm, the different registration algorithm performance are evaluated by the use of a comprehensive registration error based on C ++ to be realized, which can compare with the evaluation results of traditional target registration error. Results All three kinds of measure can both match accurately in plesiotype model images, which registration accuracy and speed in the standard of mutual information measure is more stable, integrated registration error is only half of the other two measures. Conclusion The comprehensive evaluation result by using registration error is more objective, the mutual information measure is better registration measure in radiotherapy.

Obiective To study and design a real-time monitoring system based on ZigBee wireless technology in ICU wards. Methods The framework and function of this system are analyzed and designed, which specifies the main function of physiological data acquisition and wireless transmission mode, monitor base and monitor center, and introduces the development environment and important technology realizing this system. Results The system is convenient to the treatment of patients, and the monitor base and monitor center can assist doctors to diagnose and treat patient's condition effectively. Conclusion The system utilizes ZigBee wireless communication technology as the communication technology of physiological data acquisition, which is well suited to organize the preceding wireless sensor network of 1CU ward monitor, and can reduce the cable wire splices on patient* largely, and is convenient for the treatments of patients. The monitor base and monitor center of the system can comprehensively and accurately record the vital signs, medical treatment and nursing of patients and it is convenient for doctors to supervise patients' condition, providing medical treatment, and nursing strategy pointer.

Poly-glycerol sebacate (PGS) is a novel biodegradable elastomer, it has been widely applied in the biomedical fields of heart, blood vessel and cartilage owing to its excellent biological performance, mechanical property and degradability. Electrostatic spinning is a preparation method of tissue engineering scaffolds with the characteristics of convenience, processing controllability and cost efficiency. In this paper, the author reviewed the research process of electrostatic spinning preparation and the application in the field of tissue engineering.
Decanoates ; chemistry ; Elastomers ; Glycerol ; analogs & derivatives ; chemistry ; Humans ; Polymers ; chemistry ; Tissue Engineering ; methods ; Tissue Scaffolds

The membrane fluidity of mitochondria isolated from langendorff perfused rat hearts was studied with ESR spin labeling technique and TBA method was used to detect the content of lipid peroxide. After total ischemia for 40min followed by a 20min reperfusion the 10-DSA region of the mitochondrial membrane showed significantly increased S (0.1(?)2?0.006) and ?_c(7.13?0.09?10~(10)sec) values (i. e. a decrease of membrane fluidity)in comparison with aerobic control (S=0.103?0.007); ?_c=6.86?0.20?10~(-10) sec) (P0.05). In addition, we found that DS182 could remove O_2~? produced by O_2~? generating system. Our results have showed that DS-182 is a potent scavenger of superoxide. The protective effect of DS-182 on mitochondria during ischemia/reperfusion might be due to its antioxidative activity。

Objective:To evaluate functional recovery of nerve and muscle after end-to-side neurorrhaphy.Methods:10 SD rats were randomly and evenly devided into group A and group B.Right common peroneal nerve was amputated in all the rats.Then the distal stump was sutured to the ipsilateral tibial nerve by the end-to-side way through a epineurial window in group A. The right common peroneal nerve was severed in group B as denervated control.After 1.5 months all the rats were subjected to walking track analysis,histological and ultrastructure observation.Results:In group A peroneal nerve index (PFI) achieved -41.634,density of collateral axons 51.437?12.041/1 000 ?m 2,synapsin (SYP) 439?120.5.In group B PFI was -100,SYP 0. In normal control PFI was 0, density of collateral axons 18.847?1.078/1 000 ?m 2,SYP 842?84.7.Conclusion:End-to-side neurorrhaphy may induce nerve sprout plenty of collateral axons.The axons can reach target muscle to reconstruct functional neuromuscular junction,and recover the function of the muscle in some degree.

270 patients underwent single crown prosthodontics were randomly divided into 3 groups(n =90)and received gingival retraction with single-cord,double-cord and gingival retraction paste respectively.The prosthesis quality of the 3 groups was not statistically significant (P =3.209).The patient satisfaction was more and the gingival retraction time of the paste group was shorter than those of the cord groups(P<0.05).

Objective To investigate the role of psychological intervention on cosmetic plastic surgery.Methods 600 cosmetic plastic surgery were collected from cosmetic plastic surgery of Jinan Military General Hospital,then randomly divided into control group(n=300) and study group (n=300) according to odd and even on the first visit.Conventional treatmentand care were applied to control group before,during and after operation.For study group,in addition to giving a general treatment and care,preoperative consultation talks were given to understand the beauty of the psychological characteristics,and motivations and expectations were given to adjust;music and psychological support were presented intraoperative; rehabilitation guidance were given after operation.Symptom checklist 90( SCL-90),general psychological problems of body image self-rating scale and postoperative satisfaction scale were used to assess the the mental state,body image question and satisfaction of plastic surgery.Results Before intervention,the scores of SCL-90 and the general body image self-rating scale were ( 187.5 ±52.61 ),(12.1 ± 2.2) in study group and (179.87 ± 53.33 ),(12.9 ± 2.0) in control group,there was no significant differences(P＞0.05).After intervention,the scores of SCL-90 and the general body image self-rating scale ( 159.6 ± 31.3 ),(5.6 ± 0.5 ) in study group were lower than those in control group ( 167.4 ± 38.2 ),( 6.2 ±1.1 )(P ＜ 0.01 ).Before and after treatment,50％ reduced rate of 26％,25％ reduced rate of 41.6％,body-negative rate of 97.1％,overall satisfaction rate of 89％ of surgery in study group were higher than 14％,27.6％,84.3％ and 53.67％ in the control group,the differences were significant (P＜0.01 ).Conclusion Psychological interventions can improve the psychological state,body image disturbance and operative satisfaction in cosmetic plastic surgery.Psychological interventions should pay more attention to irrmprove the efficacy of cosmetic plastic surgery.

Objective To evaluate prognostic effects and complications of interventional embolization at different time points on patients with ruptured intracranial aneurysms of Hunt -Hess Ⅳ-Ⅴlevels.Methods Through a retrospective analysis from 2008.1 to 2012.12, we collected 162 from 200 patients who underwent interventional embolization due to ruptured intracranial aneurysms according to the criteria.Patients with serious neurological disorders , coma, and end-stage diseases were excluded.Brain CT scan was performed to identify the spontaneous subarachnoid hemorrhage of the patients , followed by CTA or digital subtraction angiography ( DSA) to ensure the accurate diagnosis of intracranial aneurysms.All of the patients at Hunt-HessⅣ-Ⅴlevels were treated with interventional embolization , and were divided into two study groups:early stage therapy group of 79 patients ( embolization at the time <72 hours after the onset) and late stage therapy group of 83 patients ( embolization at the time ≥72 hours after the onset ).Factors including pre-and post-interventional Glasgow coma score ( GCS ) and Glasgow outcome score , ( GOS) as well as barthel index ( BI ) were statistically compared between the study groups.T-test was performed to compare the data between the two study groups.Chi-square test was taken to evaluate the enumeration data.And the correlation of therapeutic time and prognosis of patients was demonstrated by binary regression analysis.Results In the patients with ruptured intracranial aneurysms at Hunt-Hess Ⅳ-Ⅴlevels, early stage intervention (63.5 ±13.5) resulted in significantly better BI after three months , and demonstrated better recovery in comparison to the late stage intervention group (34.8 ±12.7) ( t=6.127, P<0.05).But no statistical significance of post-operative GCS (6.6 ±1.6 in early therapy group;6.1 ± 1.4 in late therapy group ) and discharging GOS ( 3.0 ±0.7 in early therapy group; 2.9 ±0.7 in late therapy group) was found between the two groups (t=1.822, 0.631 respectively; P>0.05).The early therapy group also presented a significant decrease of complications , such as hydrocephalus (χ2 =6.369, P<0.05 ) and venous thrombosis (χ2 =5.158, P <0.05 ), compared to the late therapy group.Furthermore, Statistical analysis revealed that therapeutic time closely correlated with the prognosis of patients with ruptured intracranial aneurysms at Hunt-Hess Ⅳ-Ⅴ levels ( P =0.009, OR =3.897).Conclusion The early stage therapy can improve the prognosis and decrease incidence of complications , which should benefit the efficient management of the patients with interventional embolization of ruptured intracranial aneurysms.