Objective:To study the effects of the modified sandblasting surface treatment on the bone implant interfacial shear strength of titanium dental implant.Methods:Titanium implants with smooth surface or modified sandblasted surface were inserted into femoral medialis condyli of dogs at random.The samples of implant with surrounding bone tissue were prepared in blockes and the shear strength of the interface was measured with Instron electronic pull out tester 2,4 and 12 weeks after operation. The modified sandblasted surface of the implant was observed with SEM and X ray spectroscopy 12 weeks after operation.Results:2 and 12 weeks after implantation the shear strength(MPa) between bone tissue and implants with modified sandblasted surface was 4.28?0.88 and 7.54?0.34 respectively,that between bone tissue and implants with smooth surface 0.09?0.08 and 1.43?0.46 respectively.SEM and X ray spectroscopy observation revealed that the most parts of the sandblasted surface of the implants were covered by bone tissue and bone matrix deposited into the pores created by the acid etching.Conclusion:The rough surface of titanium dental implant created by the modified sandblasting surface treatment can enhance the shear strength between bone tissue and implant.

Bupleurum chinense is a commonly used Chinese medicinal material, which has been used medicinally in China for over 2000 years, the development of it is of great value. There have been great advances of studies on its embryology and seed biology in recent years. In this paper, we make a review of the growth of its embryo and fruit, the characteristics of dormancy and storage and the germination of its seed. Besides, we summarize the reasons of its low germination rate and the achievements in improving the situation, for the purpose of providing reference in research on seed physiology of B. chinense.
Bupleurum ; chemistry ; growth & development ; physiology ; Drugs, Chinese Herbal ; analysis ; Plant Dormancy ; Seeds ; chemistry ; growth & development ; physiology

Objective To assess the influence of case management based on 5E mode on water-salt control in the patients with peritoneal dialysis.Methods One hundred eligible cases of peritoneal dialysis were randomly divided into two groups,50 cases in each group.The control group received regular nursing care,while on this basis the experimental group applied the case management based on 5E mode for conducting the nursing intervention.The various indicators were evaluated at 3 time points (the first stage of the baseline data ceollection),second stage (4-month intervention) and third stage (3-month follow up).Results There was no statistically significant difference in the first stage between the two groups;in the second and third stage the body weight,systolic blood pressure,diastolic blood pressure,water and salt intake amount in the experimental group were lower than those in the control group,compliance was superior to thas of the control group(P＜0.05);the descent speed of urine volume and PD ultrafiltration amount in the experimental group was slowed down compared with the control group(P＜0.05);the patient's daily sleeping time was improved(P＜0.05).Conclusion The case management based on 5E mode used in the water-sak control of the patients with peritoneal dialysis is effective and feasible.