Virtual experiments teaching has been characterized by openness, interactivity and re-source sharing. It efficiently improves the experiments teaching effects and promotes the teaching reform. At present the virtual experiment systems used by domestic universities can realize simulation of the ex-perimental principle, apparatus, object, operation and data. In the virtual experiment system students deepen the understanding of the experiments through foregrounding and the networked virtual experiment manage-ment effectively improves the effects of experiments teaching through behind-the-scenes action.

Objective To investigate the incidence and influencing factors of depression in empty-nest elderly, so as to provide evidence for reducing depression in empty-nest elderly. Methods During July to August 2016, the elderly over 60 years old in Shaanxi Province, including 504 empty-nest elderly and 194 non-empty-nest, were selected convenience sampling method. The Geriatric Depression Scale (GDS), Social Support Scale, and self-designed questionnaire about the general condition were used. ANOVA was applied to analyze the depression scores; Pearson correlation analysis was used to analyze the relation between social support and depressive symptoms; and Logistic regression analysis had been used to analyze the influencing factors of depression. Results The detection rate on depression of empty-nest elderly was 45.63%, and that of the non-empty-nest elderly was 32.99%, the difference was statistically significant (χ2=10.447,P< 0.05). The scores of GDS of the empty-nest and non-empty-nest elderly were (9.68±5.26) and (8.51±4.69) respectively, and the difference was statistically significant (t=7.390,P< 0.01). Logistic regression analysis showed that living pattern (OR=0.596), degree of education (OR=0.799), age (OR=1.394), place of abode (OR=1.699), happiness degree of later life (OR=1.663) and current life satisfaction (OR=1.474) were correlated with depressive symptom (P<0.05). In addition, Pearson correlation analysis indicated that the social support of the empty-nesters was negatively correlated with depression (r=-0.260,P<0.01). Conclusions The incidence of depression is high in empty-nest elderly, which seriously affects the physical and mental health of them. Targeted measures should be taken to provide more comprehensive social support for empty-nest elderly, improve their life quality and reduce the incidence of depression.

Objective To make volunteer service for the aged of university students as an important complement for the aged care to establish a long-term mechanism of volunteer service for the aged. Methods The teaching model integrated volunteer service for the aged into nursing practice teaching was built by adding practice of community volunteer service for the aged to the courses of community nursing. Results This research structured the organization and management model in volunteer service for the aged nursing practice teaching and preliminarily created an appraisal and motivation mechanism through setting up rules and regulations, evaluation for service effects as well as excitation mechanism. Conclusions We found a teaching model integrated with nursing practice teaching and volunteer service for the aged as well as an approach to attain a long-term and persistent development of volunteer service for the aged so as to provide a practical and theoretical basis basis for a long-term development volunteer service for the aged of university students.

Objective? To understand the heaLth seeking behavior among ruraL residents of Yanchuan County in Yan'an City and to anaLyze its infLuencing factors. Methods? From JuLy 2017 to August 2017, we seLected 552 ruraL permanent residents of Yanchuan County in Yan'an City by convenience sampLing. ALL of them were investigated with the seLf-designed heaLth seeking behavior questionnaire for ruraL residents. The binary Logistic regression was used to anaLyze the infLuencing factors of heaLth seeking behavior among ruraL residents. ResuLts? When ruraL residents were iLL, 224 (40.58%) ruraL residents bought medicines for treatment, 216 (39.13%) knew disease reLated knowLedge and 352 (53.01%) ruraL residents attended ruraL cooperative medicaL care. Binary Logistic regression showed that the infLuencing factors of heaLth seeking behavior of ruraL residents incLuded ages, monthLy income, attending insurance or new ruraL cooperative medicaL care, knowing disease reLated knowLedge, diet ruLes and the proportion of vegetabLes and meats each meaL. ConcLusions? HeaLth conscious of ruraL residents is weak; the heaLth seeking behavior is traditionaL, backward and negative;they Lack knowLedge on heaLth, medicaL treatment, heaLth care and emergency treatment and their medicaL insurance participation is inactive. Government sector shouLd pay attention to heaLth seeking behavior of ruraL residents, strengthen the deveLopment of ruraL doctor team and cLinics in viLLages and towns,improve medicaL care system and ruraL cooperative medicaL care so as to soLve the probLems high cost and difficuLty of getting medicaL service among ruraL residents.