Objective To study the adsorption capability of corncob for Ni2+ in water. Methods The tests were conducted on the factors including pH value, the initial concentration of Ni2+, adsorption time, temperature and absorbent dosage influencing the adsorption effect, and the adsorption capability of the desorbing corncob for Ni2+ in water compared with the fresh corncob. Results In the condition of 35 ℃, 0.1 g of corncobs, 20 ml of 10 mg/L Ni2+ solution, pH=6 and contact time of 2.5 h, the adsorption capacity of Ni2+ could be up to 1.6 mg/g. The adsorption data fit the Freundlich adsorption isotherm and the Langmuir adsorption isotherm. HCl could be used to desorb corncobs ladening Ni2+, the desorbed corncob had the same adsorption capacity and rate of the desorbing as the fresh corncob. Conclusion The corncob can effectively remove Ni2+ in water, and the desorbed corncob can be reused.

This study was aimed to observe the clinical curative effect of Thesium Chinese tablets in the treatment of chronic bronchitis (syndrome of phlegm heat in the lung). A total of 100 cases of chronic bronchitis (syndrome of phlegm heat in the lung) were randomly divided into two groups. The control group was treated with anti-inflamma-tion, relieving cough and asthma, phlegm removing and oxygen inhalation, maintenance of water electrolyte balance and other symptomatic treatment. In the treatment group, on the basis of treatments in the control group, Thesium Chinese tablets were given at the dosage of 1.6 geach time, 3 times a day. Both groups were treated for 1 course of 10 days. The results showed that clinical symptoms and traditional Chinese medicine (TCM) syndromes of quantizing integral were improved after treatment in both groups. And the therapeutic effect of treatment group was significantly better than the control group (P< 0.01). Thesium Chinese tablets can effectively shorten the time of clinical symptom improvement time, obviously improve the level of Ig among elderly patients with acute exacerbation of chronic bron-chitis, and enhance the immune function. It was concluded that the Thesium Chinese tablets can effectively improve the quality of life among patients with chronic bronchitis (syndrome of phlegm heat in the lung).

Ojective To investigate the value of preoperative B-type ultrasonicd examination in the choice of incision of minicholecystectomy. Methods Before performing minicholecystectomy the size of gallbladder and the thickness of abdominal wall measured by B-type ultrasonography the projections postion of gallbladder bottom and neck on abdominal wall were marked in 95 patlents. Results The incision of 82 cases were determined by the linea formed with linking the projection of gallbladder bottom to neck on abdominal wall. The procedure with two aperture was chosen in 11 cases and the incision was extended in 2 cases out of them. The operation visual field was clear and common bile duct and hepatic artery and port vein could be differentiated. The incidenec of complications was 5.3%(5/95) and no severe complication occurred. Conclusions Preoperative B-type ultrasonogrophy is a simple and effective method for the choice of incision of minicholecystectomy in the term of individuation

BACKGROUND:Specific mechanism of stem cel transplantation for treatment of myocardial infarction has been not very clear. OBJECTIVE:To investigate the effect of H2O2 METHODS: Twenty-four C57BL/6 mice, 9 weeks old, were randomized into myocardial infarction group, embryonic stem cels group, H-pretreated mouse embryonic stem cels in vitro for treatment of myocardial infarction. 2O2 pretreatment group, with eight mice in each group, which were respectively injected 150 μL PBS, 150 μL embryonic stem cels (1×106), and 150 μL H2O2-pretreated embryonic stem cels (1×106 RESULTS AND CONCLUSION:Compared with the myocardial infarction group, the left ventricular end-diastolic diameter and left ventricular end-systolic inner diameter were significantly decreased in the embryonic stem cels ) at 1 week after modeling. At 3 weeks after transplantation, left ventricular end-diastolic diameter, left ventricular end-systolic inner diameter and left ventricular ejection fraction of mice in each group were measured by ultrasound. Myocardial colagen content was detected by Sirius red staining and the average colagen volume fraction was calculated. group and H2O2 pretreatment group, while the left ventricular ejection fraction was significantly increased (P < 0.05). Heart weight/body weight, left ventricular weight/body weight, and average colagen volume fraction were significantly lower in the embryonic stem cels group and H2O2 pretreatment group than the myocardial infarction group (P < 0.05). Therefore,in vitro H2O2 pretreatment enhances reduce the post-myocardial infarction myocardial fibrosis and greatly improve heart function.

Eucommiae Cortex is one of the most common and effective traditional Chinese medicine to treat osteoporosis, whose mechanism of action on BMSCs has gradually been confirmed. BMSCs are pluripotent precursor cells of the osteoblast and the osteoclast. In addition to a multi-directional differentiation potential, BMSCs are also characterized of immune suppressive regulating function. This article is a review about the research on differentiation of osteoblasts by BMSCs, which provides a new thinking for further research.

Higher mathematics teaching has for long been regarded as the instruction of pure mathematical theory and knowledge,which lacks the enlightenment of humanistic thoughts.This paper innovatively introduces humanistic thoughts and spirit into the teaching process of higher mathematics,which propels the lecture teaching effect of higher mathematics,enhances the teaching efficiency of higher mathematics,and promotes the humanistic quality of medical students.

Objective To evaluate the medical students' medical professionalism.Methods Totally 1200 medical college students from first grade to fourth were randomly selected to do the self-designed questionnaire of medical occupation spirit using the method of cluster sampling.Principal component analysis was applied to do data processing and analysis.Results ①Two principle components were extracted,the first principal component included the attitude on the personal contact with patient,attitude on the in-depth clinical practice aiming at improving the ability of doctor-patient communication,attitude on playing multiple roles in contacting patient and the understanding of the physician-patient relationship.The second principal component included the working attitude toward history collection,the sense of pride when be praised “proficiency” and the attitude towards difficult operations.② The scores of medical occupation spirit for medical students of first grade to four grade were:-4.4226,-0.0343,-5.1397,0.6827.The score was the highest in grade three medical students followed by grade two and grade one.Conclusion Unstable development trend was observed in medical occupation spirit among medical students and due attention should be paid.Strengthening the medical studenl occupation spirit education and training should focus on two aspects:the subjective aspect,namely active communication and exchange with patients who have subjective dynamic consciousness; the objective aspect,namely the attitude towards the grasp of professional skills.

Objective To discuss the feasibility of developing psychological pressure assessment tools coping with hospitalized patients based on Neuman systems model. Methods We analyzed the fea-sibility of developing assessing tools specifically by theoretical analysis, literature review and case study.Results It was proved that Neuman systems model was suitable for guiding the development and applica-tion of assessment tools for evaluating the psychological pressure. Conclusions Neuman Systems Model could effectively evaluate the psychological pressure of non-psychiatric settings. Therefore, it can be con-cluded that the model is suitable for developing the psychological assessment tools for hospitalized patients.

0.05).Conclusion Negative peak of click sound-induced myogenic reflex potentials on masseter muscle could be of vestibular origin.We have established an ideal animal model of the acoustically evoked vestibulo-masseter reflex by using a metal clip to maintain masseter muscle tension between the jaw and skull.

Objective To establish an accurate method for estimating the indoor gamma dose rate from decorative stones.Methods Combining a room model with decorating conditions,the gamma dose rates and dose rate conversion factors (DCF) at 1 m above the floor in the room center were calculated with the Monte Carlo simulations,and the calculation results were verified through experiments.Based on the results,the limit of radionuclide contents in stone materials was further discussed.Results The DCF increases with the increase of area or thickness of decorative stones in the same room.The increase of DCF with the thickness of decorative stone is approximately linear.The DCF also increases with the area of decorative stones,but the increasing trend slows down.For the same decorative stones,the smaller the room,the larger the increase of gamma dose rate.Experimental results were consistent with the simulation results within ± 20％.Conclusions The increase of indoor gamma dose rate depends not only on the radionuclide contents,but also on the area and thickness of the decorative stones as well as the room size.The method used in this study can be used to estimate,more accurately than ever,the additional external exposure to residents due to decorative stones,and it provides a theoretical basis for revising the limit standard on radionuclide contents in decorative materials.