After a description of the concept of microvideo and studies on microvideo in domestic college and university libraries,microvideo in domestic college and university libraries was investigated and the production of microvideo was elaborated with Jining Medical College as an example.Strategies for the solution of problems in microvideo were put forward for its popularization.

Multiple risk factors lead to occurrence of cardiovascular diseases in common.Besides confirmed tradition-al risk factors,such as diabetes mellitus,dyslipidemia,smoking and hypertension etc.,some new risk factors have been found in recent years.The confirmed risk factors need further research,while the new risk factors need en-hanced study.

Heart failure is a serious and terminal stage of various cardiovascular diseases,is one of the most important heart diseases,and it also the most common reason for hospitalization.In recent years,studies on new markers in the diagnosis,treatment and prognosis of heart failure have made great progress,such as B-type brain natriuretic peptide can partially reflect hemodynamic imbalance,troponin can indicate cardiomyocyte injury,soluble ST2 and galectin-3 indicate myocardium remodeling and fibrosis,C-reactive protein,cystatin C and procalcitonin,and copeptin have significant prognostic value for outcomes,microRNA in the regulation of gene expression influence heart failure.

Preliminary screening test and interfering test were used to study the bacterial endotoxin test (BET) for Shengmai Injection (SI). The results showed that there is no interference when the SI is diluted by 10 times and limulus reagent with a sensibility of 0.25EU/mL is used for BET.

Hepatocellular carcinoma (HCC) is a malignant tumor with high incidence and mortality rates around the world.Radiofrequency ablation (RFA) is an effective therapy for HCC,especially in patients who experience recurrence after surgery for liver cancer,who are complicated by liver dysfunction and unable to undergo surgical resection,and who have multiple liver tumors and undergo palliative treatment.RFA can significantly improve patients' survival time and quality of life.This article reviews the mechanism of RFA in the treatment of HCC from the aspects of direct and indirect injuries and helps to further understand the role of RFA in local and systemic treatment of HCC,which has a potential value for multidisciplinary treatment of HCC in future.

Equisetin (EQST) belongs to polyketide (PKS)-nonribosomal peptide synthetase (NRPS) type compound with an inhibitory effect of 11β-hydroxysteroid dehydrogenase 1 (11β-HSD1) enzyme activity. This study investigated anti-obesity effect and insulin resistance improvement effect of EQST on high-fat diet (HFD)-induced ob/ob mice model. EQST treatment effectively reduced the body weight gain, fat weight gain and blood lipid content of model mice. All animal experiments were approved by the Medical Ethics Committee of Capital Institute of Pediatrics. EQST alleviated adipose tissue expansion and hepatic ballooning degeneration of model mice, and also effectively controlled the blood glucose content after glucose load and insulin load, showed a significant improvement in obesity and insulin resistance. EQST inhibited adipogenic proteins fatty acid-binding protein 4 (FABP4) and peroxisome proliferators-activated receptor γ (PPARγ), and upregulated thermogenic protein (uncoupling protein 1, UCP1) through suppressing 11β-HSD1 protein expression. In addition, EQST widely upregulates mitochondrial respiratory metabolism related proteins in adipose tissue and may improve insulin resistance through phosphatidylinositol-3-kinase (PI3K) pathway. Therefore, EQST plays an anti-obesity role by promoting adipose tissue thermogenesis and improving insulin resistance, which may provide reliable clues for improving obesity and diabetes.

The microRNA let-7 family,functioning as a tumor suppressor,has emerged as a regulator of stem cell differentiation and tumor repression.The RNA-binding protein lin28 is a stem cell pluripotency factor,which contributes to the maintenance of stem cell characteristics and promoting cell malignant transformation.lin28 can block the maturity of let-7 by combining with the precursors of let-7 family miRNAs,which is itself able to repress lin28 by binding to the 3'-UTR of lin28 transcripts,thus forming a feedback loop.The double-negative feedback loop comprising lin28 and let-7 is involved in several biological processes such as differentiation of stem cell,tumorigenesis,invasion and metastasis,drug resistance and relapse,which couldbe a potential target for cancer therapy.

Objective To study the negative emotion regulation of sea-going seafarers,establish a regulation strategy questionnaire of sea-going seafarers' negative emotion and examine its reliability and validity.Methods Based on open-ended questionnaires and previous researches,the initial questionnaire was obtained.Randomly selected 188 sea-going seafarers,by adopting program analysis and factor analysis,the final questionnaire was determined.Tested 121 sea-going seafarers by using the final questionnaire,while 55 of them by using coping style questionnaire at the same time.After two weeks,47 of them were tested by final questionnaire again.The reliability and validity of the questionnaire were investigated during the research,and the criterion validity between the coping style questionnaire and regulation strategy questionnaire of sea-going seafarers' negative emotion was also studied.Results The factor analysis results showed that the questionnaire was composed of seeking for support,abreaction,inobservance,transfer and oppression.Cronbach α of each factors was 0.857,0.841,0.825,0.806,0.754 respectively;and Cronbach o of the entire questionnaire was 0.873.The split-half correlation coefficients were 0.697,-0.839 (P ＜ 0.01) ; test-retest reliability coefficients were 0.706,-0.822 (P ＜ 0.01).The correlation between subscales were-0.031,-0.459 ; and the correlation between subscales and total scale were 0.590,-0.806 (P ＜ 0.01).Criterion validity showed that despite for the abreaction,each factor was significantly correlated with the factors of coping style questionnaire.Conclusion The sea-going seafarers' negative emotion regulation strategy questionnaire has acceptable psychometrics properties on reliability and validity.

Objective To study the change of the structural and biological properties of the cardiovascular tissue after cell extracting. Methods The native and treated pulmonary cusp and pulmonary artery wall were evaluated by HE stain, ETVG stain, immunochemistry stain and scan electron microscopy. The contents of the main macro-molecules were measured. The content and position of calcium was investigated by subcutaneous implantation in a rat model. Results The acellularization procedure resulted in an almost complete removal of the original cells while the construction of the matrix remained. The contents of colleagen and elastin increased while soluble GAG reduced. The content of calcium in acellular tissue by xenogenic implantation was less obviously than that in fresh one. Conclusion A suitable acellularization procedure can remove all cells and most soluble proteins, and matrix remains nearly intact, so as to alleviate obviously calcification via xenogenic implantation in vivo.

With the increasing perfection and improvement of microsurgery technique in modern ophthalmology, especially the popularization of micro-incision cataract extraction and the rise of femtosecond-laser-assisted cataract extraction, the cataract extraction and intraocular lens implantation is gradually transformed from vision rehabilitation surgery into refractive surgery and people also pursue better postoperative visual experiences. However, the preoperative and postoperative corneal astigmatism is always the main factor affecting the postoperative visual effect. ln recent years, the development of design and materials of the intraocular lens ( lOL) provided necessary basic conditions for clinical application of the Toric lOL. The Toric lOL is primarily characterized by effective correction of cataract patients′postoperative corneal astigmatism, which results in the enhancement of patients′postoperative visual function. ln this paper, the design, classification and clinical application of Toric lOL were analyzed, and current problems and prospect were discussed.