全文获取类型
收费全文 | 1432724篇 |
免费 | 105578篇 |
国内免费 | 4907篇 |
专业分类
耳鼻咽喉 | 17781篇 |
儿科学 | 46678篇 |
妇产科学 | 38667篇 |
基础医学 | 211698篇 |
口腔科学 | 39678篇 |
临床医学 | 138377篇 |
内科学 | 279980篇 |
皮肤病学 | 28850篇 |
神经病学 | 121432篇 |
特种医学 | 50505篇 |
外国民族医学 | 367篇 |
外科学 | 192713篇 |
综合类 | 29133篇 |
现状与发展 | 1篇 |
一般理论 | 504篇 |
预防医学 | 124037篇 |
眼科学 | 30565篇 |
药学 | 105702篇 |
6篇 | |
中国医学 | 3533篇 |
肿瘤学 | 83002篇 |
出版年
2021年 | 14286篇 |
2019年 | 14446篇 |
2018年 | 19512篇 |
2017年 | 14746篇 |
2016年 | 16116篇 |
2015年 | 18295篇 |
2014年 | 24919篇 |
2013年 | 37393篇 |
2012年 | 52319篇 |
2011年 | 55301篇 |
2010年 | 31684篇 |
2009年 | 28809篇 |
2008年 | 49354篇 |
2007年 | 51762篇 |
2006年 | 51268篇 |
2005年 | 49289篇 |
2004年 | 46683篇 |
2003年 | 44096篇 |
2002年 | 42416篇 |
2001年 | 61350篇 |
2000年 | 62860篇 |
1999年 | 52826篇 |
1998年 | 15321篇 |
1997年 | 13860篇 |
1996年 | 13624篇 |
1995年 | 12876篇 |
1994年 | 12031篇 |
1993年 | 11245篇 |
1992年 | 41827篇 |
1991年 | 40940篇 |
1990年 | 39625篇 |
1989年 | 37510篇 |
1988年 | 34737篇 |
1987年 | 33829篇 |
1986年 | 32306篇 |
1985年 | 30738篇 |
1984年 | 23162篇 |
1983年 | 19707篇 |
1982年 | 11900篇 |
1979年 | 20871篇 |
1978年 | 14885篇 |
1977年 | 12130篇 |
1976年 | 11933篇 |
1975年 | 12150篇 |
1974年 | 14844篇 |
1973年 | 14497篇 |
1972年 | 13381篇 |
1971年 | 12434篇 |
1970年 | 11505篇 |
1969年 | 10425篇 |
排序方式: 共有10000条查询结果,搜索用时 12 毫秒
1.
2.
3.
4.
5.
Very preterm children are at increased risk of reduced processing speed at 5 years of age,predicted by typical complications of prematurity and prenatal smoking 下载免费PDF全文
6.
7.
8.
9.
Vassiliki Costarelli Maria Michou Demosthenes B. Panagiotakos Christos Lionis 《International journal of food sciences and nutrition》2021,72(1):112-122
AbstractThe study examines Parental Feeding Practices (PFP) in relation to adherence to the Mediterranean Diet (MD) and children’s weight status. It’s a cross-sectional study of 402 parents (68.4% mothers), with children aged 2–12 years. Parents completed the Comprehensive Parental Feeding Questionnaire and the Mediterranean Diet Quality Index for children and adolescents (KIDMED), evaluating children’s adherence to the MD. Logistic regression showed that in children aged 2–<6 years, “emotion regulation/food as reward” and “pressure” decrease MD adherence (OR?=?0.186, p?<?0.0001 and OR?=?0.496, p?=?0.004), and “monitoring” decrease excess body weight (OR?=?0.284, p?=?0.009). In older children (6–12 years), “healthy eating guidance” and “monitoring” increase MD adherence (OR?=?3.262, p?=?0.001 and OR?=?3.147, p?<?0.0001), “child control” decreases MD adherence (OR?=?0.587, p?=?0.049), “pressure” decrease excess body weight (OR?=?0.495, p?<?0.0001) and “restriction” increase excess body weight (OR?=?1.784, p?=?0.015). “Healthy eating guidance” and “monitoring” seem to be the best PFP employed, in terms of children’s MD adherence and weight status. 相似文献
10.
Megan L. Robbins Robert C. Wright Ana María López Karen Weihs 《Journal of psychosocial oncology》2019,37(2):160-177
AbstractObjectives: This study examined word use as an indicator of interpersonal positive reframing in daily conversations of couples coping with breast cancer and as a predictor of stress.Design: The Electronically Activated Recorder (EAR) and Linguistic Inquiry and Word Count (LIWC) were used to examine naturally occurring word use conceptually linked to positive reframing (positive emotion, negative emotion, and cognitive processing words).Sample: Fifty-two couples coping with breast cancer.Methods: Couples wore the EAR, a device participants wear, that audio-recorded over one weekend (>16,000 sound files), and completed self-reports of positive reframing (COPE) and stress (Perceived Stress Scale). LIWC, a software program, measured word use.Findings: Both partners’ word use (i.e., positive emotion and cognitive processing words) was associated with their own reported positive reframing, and spouses’ word use was also indicative of patients’ positive reframing. Results also revealed that, in general, words indicating positive reframing predicted lower levels of stress.Conclusions: Findings supported the hypothesis that partners—and particularly spouses of breast cancer patients—may assist each other’s coping by positively reframing the cancer experience and other negative experiences in conversation. 相似文献