Magnesium and its alloys possess the features of low density,high strength and rigidity,good biocompatibility and biodegradability.Their elastic modulus is similar to human bone,which endows them with a broad application prospect in the field of orthopedic biomedical materials.This paper reviews the current research status of magnesium and its alloys as the orthopedic implant materials and as porous scaffold materials in bone tissue engineering.Methods to improve corrosion resistance of magnesium-based metals ale briefly described as well.

Objective To develop secondary nursing discipline system based on the situation of China and the international trends of nursing education,which would be applied as the theoretical guideline for the construction of nursing system in China.Methods An indicator system of entry criteria of secondary nursing discipline was formed by examining the current situation of nursing knowledge body and organizational system in domestic and foreign countries through bibliometric and content analysis,were further supported in the panel meeting.Then the secondary nursing discipline system were constructed according to the entry criteria.Results Knowledge innovation,knowledge dissemination,personnel training and social needs of health were found to be the first indicators of the entry criteria,including 14 secondary indicators,10 secondary nursing disciplines were proposed.Conclusions The secondary nursing discipline system is in line with current situation of nursing at home and abroad,and would be gradually refined with the de velopment of nursing discipline.

Objective:To explore the extent of psychological counselors’ job burnout. Methods:171 psychological counselors were tested by MBI-HSS.Results:(1) In the aspects of demographic variables, male experienced higher cynicism(t=2.233,P

BackgroundThere are a lot of studies about the wound healing charateristics of cornea after SBK with femtosecond laser.In our study,mechanical microkeratome was preferred for corneal flap.We observed the proliferation of keratocytes by investigating the myofibroblast ( MF) activity.Objective The study was to compare the morphologic and histological changes in the cornea after sub-Bowmans keratomileusis ( SBK) with photorefractive keratectomy ( PRK) and laser in situ keratomileusis ( LASIK)by investigating the express of transforming growth factor-β( TGF-β)and α-smooth muscle actin( α-SMA)and to investigate the wound healing characteristiCs of cornea after SBK.MethodsTwenty-seven adult New Zealand white rabbits were randomly assigned into group A,B and C.SBK waa performed on the right eyes of each rabbit in group A,LASIK for group B and PRK for group C.All the left eyes were used as the normal control group.Histological examinations by light microscopy were performed on day 7,1 months,3 months after surgery.The expression of α-SMA and TGF-β and the number of activated MF were assessed by immunohistochemiatry.ResultsIn SBK group,corneal epithelium cells proliferation around the wound was seen and the numbers of active fibroblasts were increased after surgery.The expression of α-SMA or TGF-β around the corneal flap and the corneal 8troma started at day 7 postoperatively and peaked at 1 months and decreaaed around the corneal flap and the corneal 8troma started at day 7 postoperatively and peaked at 1 months and decreaaed t3mnh.TFβep( SBK:t=2.226,2.158,2.330,P＜0.05;PRK:t=4.745,6.524,6.293,P＜O.05).The numbersof activ( SBK:t=2.226,2.158,2.330,P＜O.05;PRK:t=4.745,6.524,6.293,P＜0.05).The numbersof activatedMFs were different fromLASIKstatisticallytoobetweenSBKgroupandPRKgroup ( SBK:t =4.439.5.692,4.175,P＜0.05 ; PRK:t=6.330,6.723,5.267,P＜0.05 ).Theα-SMAand TCF-βexpressionsin SBKgroupwerelessthan PRK group but more thanLASIKgroup( TCF-β:t =4.691,5.527,t =4.399,P＜0.05 ; α-SMA:t =9.637.10.282,8.197,P＜0.05).The numhers of MFs in SBK group was less than PRK group before 3 months and were same at 3 months ( t =5.188,4.529,P＜0.05 ).Conclusions ComparedwithconventionalLASIK,SBKcanup-regulatethe expression of α-SMA.TGF-β,activated MFs in the corneal flap.which enhance corneal biomechanics and promote healing.However,most of the disadvantages caused by wound healing in SBK still remain compared to PRK.

Adolescent ; Child ; Child, Preschool ; Female ; Humans ; Infant ; Kidney Neoplasms ; blood ; pathology ; Male ; Neoplasm Metastasis ; Vascular Endothelial Growth Factor A ; blood ; physiology ; Wilms Tumor ; blood ; pathology

Objective To study the effect of trans-theoretical model of behavior on ambulation training in stroke hemiplegic patients. Methods Sixty hospitalized stroke hemiplegic patients from June to December 2013 were selected as control group. The control group was treated with routine nursing and ambulation training guidance. Sixty-two hospitalized stroke hemiplegia patients, from January 2014 to June 2014, were selected as intervention group. Patients in the intervention group received trans-theoretical model of behavior together with ambulation training guidance for 3 weeks and follow-up record for 6 months. Holden functional ambulation categories ( FAC ) and Bathel index were used to evaluate the effect of ambulation training . Result Trans-theoretical model of behavior training improved the walking function and activities of daily living in intervention group patients , compared with those of the control group. Conclusions Taking trans-theoretical model of behavior in walking training health education can improve the ambulation ability and ability of daily living of stroke hemiplegic patients. Therefore this theory can enhance the stroke hemiplegic patients′life quality.

Objective: To investigate alveolar bone remodeling on both labial and lingual aspects of lower anterior teeth during treatment and retention stage. Methods: Forty-three cases with lower first premolars extracted (34 girls and 9 boys) and full records at three time points (pretreatment, posttreatment, follow-up) were collected as study sample. Displacement of lower incisor and bone thickness around its labial and lingual aspect were measured. Results:For the level of center of resistance(LC), there was statistically significant decrease of alveolar bone on lingual aspect (0.78?0.77) mm and no change on labial aspect, as the center of resistance(CR) was retracted lingually by (-3.02?1.13) mm during treatment. Analogous changes were found at the level of 3 mm apical to the center of resistance (L3C). In retention stage, with stable positioned lower incisor, no statistically significant change of alveolar bone was found on labial aspect at LC while a little amount of decrease of labial bone (0.20?0.58) mm was found at L3C. On the contrary, subsequential bone apposition could be detected with increase of lingual bone at both levels by (0.31?0.76) mm and (0.38?0.94)mm respectively. Conclusion:Speed of labial bone resorption is faster than that of lingual bone apposition during orthodontic treatment. In retention stage, sequential bone apposition on lingual aspect is presented with lower incisor in stable position.

Objective To understand the status quo of medical graduates' professional faith and to evaluate the education methods. Methods Questionnaire survey combined with expert inter-view were conducted from two aspects: professional faith condition and educational methods. Medical graduates from an affiliated hospital of a university in Shanghai were investigated in this survey and 392 copies of effective questionnaires were analyzed comparatively. Results 92.6%(363/392) students regarded extreme events as the main factor that influence their further employment. 14.8%(58/392) students had career planning. 79.6%(312/392) students achieved self-improvement from strengthening learning and training. Salary was the main factor that affect medical graduates' career choice (4.47 points). 75.5%(296/392) students considered that the existing professional faith education was out of fashion. 85.5%(335/392) of students thought that education methods should be improved. Strengthen-ing relevant education career planning was considered as the most valuable content (4.22 points) and the most effective form was group learning (4.53 points). Conclusions The main reasons for devia-tion and dissatisfaction are:social factor, lack of professional faith, unique status and obsolete way of education. Professional faith education should take the above factors into consideration.

0.05).A similar amount of propofol was used in each group.A significantly higher dose of sufentanil was administered in the Group C(73.9?13.6 ?g)than in the Group A(24.3?4.9 ?g)and the Group B(35.4?8.1?g)(qC-A=237.924,P=0.000;qC-B=119.385,P=0.000).The expected time of recovering consciousness was shorter in the Group A and B than in the Group C.Conclusions Administered by target-controlled infusion with propofol,sufentanil dose-dependently reduces BIS and modifies hemodynamic responses during anesthesia induction.The target effect-site sufentanil concentration of 0.6 ng/ml combined with plasma propofol concentration of 3 ?g/ml is suitable for anesthesia induction for short-time laparoscopic operation.

0.05). The requirement of vasoactive drugs in the group A was significantly smaller than that in the group B (P