Network theory is applied to the optimization study on field medical equipment allocation with patient flow and its rate in wartime analyzed. With the application of queuing theory and linear programming, different optimized combinations of evacuation tools are studied, and then static model and dynamic model are established. A calculating table on queue length, service intensity and service desk is put forward to realize rapid evaluation of quantities of required field medical equipment for PLA. Some suggestions are provided to modify the current standard of PLA's basic medical equipment.

Pharmaceutical therapy,including anti-vascular endothelial growth factor treatment and intravitreal corticosteroids,is the most common treatment for branch retinal vein occlusion (BRVO) and its complications,however there are confusing ideas about the protocol,patient selection,timing and endpoint of this treatment.The disease is easy to relapse with these drugs therapy.Collateral vessel formation was found in patients receiving intravitreal injection of ranibizumab or triamcinolone for BRVO and secondary macular edema.The mechanism of collateral vessel formation has not been carefully investigated.In the past thrombolysis,arteriovenous fasciostomy and laser choroidal retinal vascular anastomosis were used to reconstruct the retinal circulation,but their rationality,effectiveness and safety need to be further were studied.In recent years,because of the key technology is still immature,the artificial vascular bypass surgery experiment is not yet practical,but provides us a new idea worth looking forward to for the treatment of BRVO.

Objective To explore the effect of meropenem on the treatment of children with severe infection and the effect on the level of PCT.MethodsThe clinical data of patients with infectious diseases treated in our hospital from December 2013 to February 2016 were retrospectively analyzed.According to the anti infective drugs were divided into control group and observation group, the control group was given routine antibiotic treatment, the observation group was given meropenem treatment.The treatment effect of the two groups were observed, the difference of serum PCT, cytokine level and blood gas indexes before and after treatment in the two groups were compared, correlation analysis with PCT level and serum levels of inflammatory cytokines and blood indexes of severe infection.ResultsIn the control group, 50 cases were successful, the observation group was successful in the treatment of the patients, there were no significant differences in the success rate between the two groups.Two groups of patients before treatment PCT and inflammatory cytokines level no difference, after treatment, the observation group PCT, IL-18, IL-6 and hs-CRP levels were lower than the control group;Two groups of children before treatment blood gas index no difference, after treatment, the observation group SpO2 level higher than the control group, P ETCO2 level was lower than the control group.PCT levels in children with severe infection were positively correlated with IL-18, IL-6, hs-CRP and P ETCO2 levels and negatively correlated with SpO2 levels.ConclusionMeropenem has better therapeutic effect in the treatment of children with severe infection, can significantly reduce the serum PCT level, has the value of clinical application.

Objective To observe the changes of morphology and biochemical parameters in rats with D-galactose-induced skin ageing. Methods Twenty-six female and male rats were randomly divided into 2 groups. D-galactose group rats were injected subcutaneously with 120 mg?kg-1?d-1 of D-galactose everyday, whereas the control group with normal saline. The rats were sacrificed on days 100. The ageing-related biochemical parameters were detected in the blood and skin, and the cutaneous histopathology was observed. Epidermal thickness and area of elastic fibers were determined quantitatively with imaging analysis system. Results Epidermal thickness and content of elastic fibers were significantly lower in D-galactose group than those in the control group. The loose arrangement of collagen and elastic fibers was evident in D-galactose group. These features of the rats in D-galactose group were similar to those in the ageing skin of human beings. Compared with the control group, the levels of hydroxyproline decreased and malondialdehyde (MDA) increased in the skin of the D-galactose group. The activity of glutathione peroxidase (GSH-PX) and catalase (CAT) in the whole blood and that of superoxide dismutase (SOD) in erythrocytes were remarkably reduced in the D-galactose group as compared to the control group. Conclusions The rat models with skin ageing are established by subcutaneous injection of 120 mg?kg-1?d-1 of D-galactose once daily for 100 days. The changes of morphologic and biochemical parameters in these models are analogous to those in human skin ageing.

Object To study the chemical constituent and the bioactivity in the bark of Tsoongiodendron odorum Chun Methods By bioactive following method, the extracts of both EtOAc and n BuOH in the bark of T odorum were screened for in vitro anti tumor activity Results Five constituents were obtained Among them, three from EtOAc fraction belonged to germacranolides They were costunolide (Ⅰ), parthenolide (Ⅱ) and dihydroparthenolide (Ⅲ) The other two were from the fraction of n BuOH, one was an oxoaporphinoid alkaloid, liriodenine (Ⅳ), and the last was a furanone, 2, 3 dihydroxyl 2 methyl butylrolactone (Ⅴ) Conclusion All the above five compounds are found for the first time from this plant Compounds Ⅰ, Ⅱ, Ⅳ, and Ⅴ show the cytotoxic activities against a variety of tumor cell strains, respectively

Objective Study changes and clinical significance of collagen and cytokine during COPD episode and remission in order to guide clinical treatment. Methods From Mar.2002 to Nov.2004,the COPD patients of episode and remission period were compared with the healthy elderly people.The collagen and cytokine of the serum from the COPD patients and healthy elderly people were detected by applying ABC-ELISA and radio-immunity means. Results The level of serum C_Ⅰ、C_Ⅲ、C_Ⅳ increased obviously in the COPD patients during COPD episode and remission episode compared with that in the healthy elderly people( P

Objective To discuss the role of IL-8 and NF-?B in the airway inflammation of COPD in stable stage.Methods From Mar.2003 to Sep.2005,select 26 COPD patients in stable stage,determine the concentration of IL-8 in the serum of induced sputum,separate the macropolycyte and determine the degree of active expression of NF-?B,the concentration of SOD,MDA and IL-8 in peripheral blood.Lung function(the percent of FEV_1/FEV_1 prospectived value,FEV_1/FVC)of all patients were investigated.Results The concentration of IL-8 in the serum of induced sputum of COPD patients was higher than the normal group obviously(P

BACKGROUND: Bone marrow mesenchymal stem cells is the most promising tissue engineering seed cells because of their strong proliferation and passage ability, multi-directional differentiation potential, as well as no ethical problems and no rejection.OBJECTIVE: To review the recent advances in the directional differentiation of bone marrow mesenchymal stem cells induced by various conditions METHODS: The first author retrieved CNKI, PubMed, Wanfang databases for relevant articles published from January 2001 to September 2016. The keywords were bone marrow mesenchymal stem cells, BMSCs, directional differentiation in Chinese and English, respectively. Literature addressing experimental research and review were selected, and finally 48 articles were included.RESULTS AND CONCLUSION: Bone marrow mesenchymal stem cells can be induced in vitro to differentiate into chondrocytes, osteoblasts, adipocytes, and nerve cells by cytokines, chemical drugs, Chinese herbs and extracts, physical stimulation. To establish feasible induction conditions in vitro and improve cell induction efficiency is the basis for the clinical application of bone marrow mesenchymal stem cells.