Objective To investigate the trunk stability control of spastic cerebral palsy patients,and to analyze their visual compensation and the resulting symmetrical balance of the trunk.Methods Twenty children with spastic cerebral palsy and 20 healthy children formed the experimental and control groups respectively.Their balance was tested using the PK 254P rehabilitation system.Trunk stability and symmetry parameters were measured in standardized silent sitting for 30s with the eyes open and closed.The anterior-posterior (AP) and mediolateral deviations of the center of pressure (COP),the average speed of COP excursions in each direction,the COP perimeter,and the ellipse area of the COP were quantified.Results The two groups showed statistically significant differences in the average values of all the variables measured.The differences in the trunk stability control parameters of the experimental group between the eyes-open and eyes-closed conditions were significantly greater than those of the control group.The offset of the medial-lateral COP in the spastic cerebral palsy subjects was nearly symmetrical (the average position of the COP on the X axis was close to zero),while the anterior-posterior offset tended to the anterior direction (the average position of the COP on the Y axis was significantly positive).The medial-lateral and anterior-posterior offsets of the health subjects were nearly symmetrical (both close to zero).Conclusion Children with spastic cerebral palsy have less trunk stability control than healthy children.They rely more on visual cues in compensation.Their medial-lateral COP control is nearly symmetrical,but their anteriorposterior posture tends to the anterior.

Objective:To observe the clinical effects and adverse reactions of meropenem in the treatment of severe lung infection. Methods:Totally 62 severe bacterial lung infection patients were randomly divided into two groups randomly. The patients in the con-trol group (31 cases ) were treated with cefoperazone / sulbactam 2-8 g in 100 ml 0. 9% sodium chloride injections,ivd,q12h, and the treatment group (31 cases ) was treated with meropenem 1 g in 100 ml 0. 9% sodium chloride injections,ivd,q8h. The treatment course was 14 days. The bacterial clearance rate, dual infection rate, clinical efficacy and adverse drug reactions of the two groups were observed and compared. Results:The bacterial clearance rate in the control group was 85. 2% and that in the treatment group was 92. 85% (P>0. 05). The incidence rate of dual infection in the treatment group (3. 6%) was significant lower than that in the control group (P<0. 05). The total effective rate in the treatment group (96. 77%) was significant higher than that in the control group ( P<0. 05). The adverse reactions of the two groups had no significant difference (P>0. 05). Conclusion:Meropenem is ef-fective in the treatment of severe bacterial lung infection. It can clear bacteria and reduce dual infection effectively, which shows better efficacy than cefoperazone / sulbactam.

Bio-safety problem was emerging as more and more important with the development of biotechnology,and many governments concerned about it.We analyzed the different category of biotechnology related with bio-safety problem,and found out its main influencing factors and safety results.In the course of research and development of biotechnology,misuse,abuse and non-moral use are three main human factors.We concluded that the situation of bio-threat would be more diverse,and also the misuse chance would increase.It will be benefited that public health manager make regulations and legislature with full dimension of bio-safety assessment of different biotechnologies.

After a description of research contents and methods in scientific literature novelty assessment and tech-nical competitive intelligence , the necessity and feasibility to add technical competitive intelligence analysis into scientific literature novelty assessment were analyzed , followed by an elaboration on adding technical competitive in-telligence analysis into scientific literature novelty assessment in aspects of the contents , types and report of scientific literature novelty assessment in combination with case analysis , which showed that technical competitive intelligence analysis is an effective method for searching literature and writing scientific literature novelty assessment report .

Based on previous research on the knowledge network,the paper summarizes the relevant research on the concept evolution,structure,model,evaluation index and practical application of the knowledge network based on the literature carrier,and provides reference for knowledge management and scientific innovation management.

The development history of medical and health literature novelty assessment institutions in Chinese PLA was described followed by an analysis of their current situation and problems with suggestions put forward for their solution , such as attaching importance to the training of persons engaged in medical and health literature novelty assess-ment, optimizing resource development , and carrying out inspection and assessment .

After the development of medical and health think tanks in China and foreign countries were compara-tively analyzed, the problems of their development in China were pointed out, including a fewer number of inde-pendent think tanks and independently selected studies, and less international influencing power, with measures for the development of medical and health think tanks in China put forward, such as paying attention to their competi-tiveness, intensifying their support strength, and optimizing the employed.

The paper constructs the evaluation index system for novelty retrieval organizations according to the demand of quality evaluation in these organizations .This index system and its weight coefficients were determined using Delphi and Analytical Hierarchy Process ( AHP) methods.The whole evaluation index system based on novelty retrieval regulations , comprises of four first-level indicators and fourteen second-level indicators .The index system facilitates the construction of novelty retrieval organizations and the improvement of novelty retrieval quality .It also provides reference for setting evalua-tion standards of military medical novelty retrieval organizations .

Stem cell research is one of the most notable fields in life science at the end of 20th century and the beginning of 21st century,which has made a considerable contribution to every aspect of life science,especially to the regenerative medicine.However,a great debate on ethics has also arisened all over the world on the research of human embryonic stem cells.This paper gives the cause of the debate,provides the analysis of the stem cell legislations among various countries,which have different impacts on the research of stem cell and finally points out its enlightenment to our country.

Objective: To study the pathophysiological role of tumor necrosis factor ? (TNF ?) and interleukin6 (IL 6) in trauma by assaying concentration of TNF ? in blood after maxillofacial gunshot wounds in dogs. Methods: Before and after gunshot wounds, concentration of TNF ? and IL 6 in the plasma of dogs were assessed by ELISA method at different times. Results: Although the systemic injuries in our gunshot wound model were no very severe and the dogs had no severe complications, the TNF ? concentration in plasma became significantly higher in the first 2 6 h after the gunshot wounds. They varied greatly with each dog and became normal after 10 h without treatment. IL 6 was not detected in blood. Conclusion: TNF ? expression in blood after gunshot wounds is the normal host immune response to the trauma, its circulating concentrations might be associated with the injury severity. But their transient expressions do not significantly increase the severity of the trauma. [