Research status and development of biodegradable zinc alloy as orthopedics implant / 生物医学工程学杂志

Znic (Zn) alloys with good cytocompatibility and suitable degradation rate have been a kind of biodegradable metal with great potential for clinical applications. This paper summarizes the biological role of degradable Zn alloy as bone implant materials, discusses the mechanical properties of different Zn alloys and their advantages and disadvantages as bone implant materials, and analyzes the influence of different processing strategies (such as alloying and additive manufacturing) on the mechanical properties of Zn alloys. This paper provides systematic design approaches for biodegradable Zn alloys as bone implant materials in terms of the material selection, product processing, structural topology optimization, and assesses their application prospects with a view to better serve the clinic.

Impact of public health emergency on public psychology: analysis of mental health assistance hotlines during COVID-19 in Zhejiang province / 浙江大学学报·医学版

OBJECTIVE@#To analyze the usage of mental health assistance hotline during COVID-19 in Zhejiang province from January 25th to February 29th 2020, and summarize the characteristics of the demand for mental health services and the dynamic changes of public mental health status during COVID-19 pandemic.@*METHODS@#Both quantitative and qualitative methods were used. The calls related to pandemic were divided into four categories: medical, psychological, information and the others. The secondary categories of psychological calls were determined by text analysis. The number of calls were calculated weekly and the number of various types of calls over time were analyzed. We used stratified random sampling method to extract 600 cases of all kinds of calls related to pandemic and conducted a semantic analysis, through marking new, similar combination to form a feature set, then summed up the call content characteristics of each stage. Two hundred callers were followed up to understand how they felt about the call process in four aspects: the waiting time, call duration, the degree of problem-solving and the way to end the call.@*RESULTS@#In a total of 13 746 calls, 8978 were related to pandemic, among which 12.59%(1130/8978) were about medical issues, 26.50%(2379/8978) were about mental health, 27.18%(2440/8978) were about information regarding the pandemic and 33.74%(3029/8978) were about other pandemic related issues. Pandemic situation, relevant policy release, frequency of advertising campaigns were predictors of the number of calls per day during the pandemic (<0.05 or <0.01). The number of calls differed by gender and identities of callers (both <0.05). Finally 181 callers accepted telephone follow-up. Among them, 51.38%(93/181) of the callers thought that the waiting time was too long, 33.15%(60/181) of the callers thought that the call time was insufficient, 80.66%(146/181) of callers believed that the hotline could partially or completely resolve their concerns, and 39.23%(71/181) of the callers said the operator proposed to end the call.@*CONCLUSIONS@#s The changes of the number and content of the mental health assistance hotline calls reflected that the public mental health status experienced four stages during the pandemic: confusion, panic, boredom, and adjustment. The specialized mental health assistance hotlines should be further strengthened, and the efficiency should be improved. Mental health interventions should be tailored and adopted according to the characteristics of the public mental health status at different stages of the pandemic.

Construction of occupational management skills training mode for the mental rehabilitation patients：an action research / 中国实用护理杂志

Objective To build occupational management skills training mode for the community patients with psychosis in recovery stage by using action research method. Methods Action research method was applied to mental rehabilitation patients in Sunshine Psychiatric Garden of Shanghai to manage vocational rehabilitation support. By literature verification and empirical experience, the key problems were found out, and goals were established. Then management skills according to planning, action, observation, reflection and correction were implemented. This circle were spiraled for 2-3 times stages, and verification and evaluation before and after action practice based on Negative Symptom Rating scale (SANS) and Social Disability Screening Scale (SDSS). Results The community mental vocational rehabilitation was built with action research and based on the evidence of foreign psychic rehabilitation supportive individual placement and support. The mode should consider the professional characteristics of technical, social and economic. Also, it should contain professional ability, social skills and job adaptability training and performance evaluation, and offer salary allowance. The factors of SANS in 21 patients after practice were significantly improved (P < 0.01), and most of the factors in the SDSS were significantly improved (P < 0.01). Conclusions Community psychic vocational rehabilitation using action research method is a kind of advanced nursing practice, and also a process of evidence-based practice, which can provide a systematic, specific, practical work method for community mental rehabilitation institutions to force vocational rehabilitation training.

Research on chromatographic fingerprint of fruits of Schisandra chinesis / 中国中药杂志

<p><b>OBJECTIVE</b>To study the chromatographic fingerprint of the fruits of Schisandra chinensis, and identify the peaks.</p><p><b>METHOD</b>Analysis was performed at 30 degrees C on a Waters Symmetry C18 column (4.6 mm x 250 mm, 5 microm), eluted with acetonitrile-water gradient elution. The flow-rate was 1.0 mL x min(-1), and detection wavelength was 218 nm. The peaks in the chromatogram were identified by LC-MS.</p><p><b>RESULT</b>The fingerprint of the fruits of S. chinensis was established, and fifteen peaks of lignans were identified.</p><p><b>CONCLUSION</b>The method was easy, reliable and could be used as a powerful tool for the further quality control of S. chinensis.</p>