Objective To explore the early failure of narrow-diameter implants (NDIs) and to provide a reference for clinical implant restoration. Methods From April 2017 to April 2020, data from a total of 725 patien
Results from the first national study of US dairy heifer health indicated that factors associated with mortality in the first 21 days of life included first colostrum-feeding method, timing, and volume; time of separation from dam; calving ease; and twin birth. Population attributable fraction esti...
2002) provides a theoretical framework for the study of user behavior, which considers three important elements: stimulus, organism and response. The theory points out that the external environment incentive can stimulate the inner or perceptual state of the individual user, and then drive the indivi...
Previous studies on the influencing factors of Chinese college students' social phobia often led to unstable or even contradictory results7 because the objects were collected from single regions11,13, colleges with specific majors8,12, or the sample size was relatively small20,21. Many studies ...
Data from the China Health and Retirement Longitudinal Study (CHARLS) 2011 indicated the very elderly population (≥ 80 years; 26.5%) had the highest prevalence of diabetes among people aged ≥ 45 years[21]. Notwithstanding, epidemiological studies on the prevalence of DM in the very elderly ...
Enormous sediments provided by the source areas were transported into the Xihu Depression, which accelerated the progradation of braided river delta into the sea. In addition, the paleogeographic framework during the Middle to Lower Pinghu Periods were characterized by many fault-controlled sags, which...
Figure 7. Photomicrographs of the Carboniferous kerogens 下载: 全尺寸图片 幻灯片 岩石热解测试结果显示(N=60样次):石炭系烃源岩样品的最高热解峰温(Tmax)普遍高于450 ℃,说明大部分岩石样品中的分散有机质处于较高热演化程度(Tissot and Welte, 1984),通过Tmax-HI(氢指数)图版对此类样品有机质类型的...
Travel anxiety, risk attitude and travel intentions towards “Travel Bubble” destinations in Hong Kong: Effect of the fear of COVID-19 International Journal of Environmental Research and Public Health, 17 (21) (2020), p. 7859 Crossref
Suicide attempts and completion are significantly more frequent at times of low or rapid states of decline in endogenous sex steroids (estrogen and progesterone), such as peri-menopause19, the postpartum period20, and the premenstrual and menstrual phases of the cycle21,22. The complicated interpla...
Specifically, construction land utilization efficiency21, per capita GDP19 and population urbanization rate22 have positive effects on urban land expansion, such as urban redevelopment and road network expansion23. Additionally, with the increased proportion of urban population, managers and citizens are ...