全文获取类型
收费全文 | 11285篇 |
免费 | 1432篇 |
国内免费 | 33篇 |
专业分类
耳鼻咽喉 | 128篇 |
儿科学 | 353篇 |
妇产科学 | 969篇 |
基础医学 | 1083篇 |
口腔科学 | 127篇 |
临床医学 | 3651篇 |
内科学 | 1622篇 |
皮肤病学 | 140篇 |
神经病学 | 874篇 |
特种医学 | 215篇 |
外科学 | 877篇 |
综合类 | 64篇 |
一般理论 | 10篇 |
预防医学 | 1146篇 |
眼科学 | 157篇 |
药学 | 496篇 |
中国医学 | 33篇 |
肿瘤学 | 805篇 |
出版年
2024年 | 24篇 |
2023年 | 234篇 |
2022年 | 111篇 |
2021年 | 255篇 |
2020年 | 279篇 |
2019年 | 220篇 |
2018年 | 356篇 |
2017年 | 356篇 |
2016年 | 459篇 |
2015年 | 419篇 |
2014年 | 566篇 |
2013年 | 688篇 |
2012年 | 675篇 |
2011年 | 733篇 |
2010年 | 516篇 |
2009年 | 657篇 |
2008年 | 675篇 |
2007年 | 628篇 |
2006年 | 582篇 |
2005年 | 518篇 |
2004年 | 552篇 |
2003年 | 524篇 |
2002年 | 454篇 |
2001年 | 147篇 |
2000年 | 64篇 |
1999年 | 162篇 |
1998年 | 203篇 |
1997年 | 188篇 |
1996年 | 163篇 |
1995年 | 164篇 |
1994年 | 133篇 |
1993年 | 109篇 |
1992年 | 87篇 |
1991年 | 90篇 |
1990年 | 92篇 |
1989年 | 62篇 |
1988年 | 45篇 |
1987年 | 40篇 |
1986年 | 34篇 |
1985年 | 59篇 |
1984年 | 45篇 |
1983年 | 43篇 |
1982年 | 42篇 |
1981年 | 40篇 |
1980年 | 21篇 |
1979年 | 19篇 |
1978年 | 29篇 |
1976年 | 21篇 |
1973年 | 20篇 |
1972年 | 20篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
31.
American Diabetes Association The initial draft of this paper was prepared by Rebecca G. Schafer MS RD ; Betsy Bohannon MS RD; Marion J. Franz MS RD; Janine Freeman RD; Alberta Holmes MS RD; Sue McLaughlin RD; Linda B. Haas RN; Davida F. Kruger MSN RN; Rodney A. Lorenz MD; Molly M.McMahon MD 《Journal of the American Dietetic Association》1997,97(1):52-53
32.
Amy J Bastian Valerie E Kelly Fredy J Revilla Joel S Perlmutter Jonathan W Mink 《Movement disorders》2003,18(9):1000-1007
The purpose of this study was to determine the effects of unilateral versus bilateral subthalamic nucleus (STN) stimulation on quantitative measures of walking and reaching in Parkinson's disease (PD). We used kinematic measures and the Unified Parkinson's Disease Rating Scale (UPDRS) motor subscale (subscale III) to evaluate the movement of 6 people with PD who had bilateral STN stimulators implanted for at least 6 months and withheld their anti-parkinson medication for at least 8 hours. Subjects were studied with both stimulators off, one on, and both on. Kinematic data were collected as subjects walked, reached to a target, and were rated using the UPDRS motor subscale. STN stimulation improved walking speed and stride length, with the greatest benefit from bilateral stimulation. Reaching speed was improved by unilateral STN stimulation alone, with no additive effect of bilateral stimulation. UPDRS motor subscale ratings paralleled the kinematic findings. STN stimulation did not restore PD subjects' movements to the level of age-matched controls. Overall, these results provide further evidence that the basal ganglia pathways involved in control of walking and reaching may be distinct. We speculate that basal ganglia may influence walking through bilateral pedunculopontine projections and reaching through ipsilateral thalamocortical projections. Our findings also suggest that maximal improvement of walking requires bilateral rather than unilateral STN stimulation. 相似文献
33.
TOPIC: Psychological impact of adoption and resulting core issues for adopted children. PURPOSE: To raise awareness of the psychological impact of adoption. SOURCES: Published literature and personal observations. CONCLUSIONS: Adoption raises unique issues and challenges for the child and adoptive parents. Resolving the issues of adoption is a lifelong process. Through an awareness of the issues inherent in adoption, nurses and parents can use strategies that will enhance children's self-esteem and decrease their emotional vulnerability. Search terms: Adoption, intervention, loss, self-esteem, strategies 相似文献
34.
35.
36.
37.
38.
Debbie M. Popovich MSN RN CPNP Allison McAlhany MSN RN CPNP 《Newborn and Infant Nursing Reviews》2004,4(1):51
Chlamydia trachomatis is the most prevalent sexually transmitted microbial infection in the United States. The CDC estimates that 3 million people are infected annually, with approximately 50% of infected men and 75% of infected women having few or no recognized symptoms. C. trachomatis is frequently transferred from mother to infant, and the maternal-infant transfer of this disease may have negative consequences for the newborn, such as prematurity, pneumonia, and conjunctivitis. Ocular prophylaxis with silver nitrate and or antibiotics is ineffective in preventing neonatal chlamydial conjunctivitis. By increasing awareness of the potential adverse consequences, initiating screening and treatment of pregnant women, and advocating for newborn assessment and treatment, nurses can enhance the quality of care for mothers and their infants. 相似文献
39.
40.
This paper describes a response directed stress management intervention (SMI) in the form of a Jungian based preference awareness education (PAE). It uses the Insights System of personality types to increase awareness of behaviour and communication preferences of self and different others. Eighteen self‐recruited academic employees participated for 7 weeks and received feedback about work preferences and personality type. The aim was to reduce perceptions of stress and interpersonal stress and to increase feelings of job satisfaction and interpersonal satisfaction. The data were analysed using two‐tailed t‐tests. No significant findings were observed for the total sample after training, however, interesting results were found for certain sub‐sample groups. Extravert‐thinking types, reported decreased stress levels (p > 0.018), and participants suffering high stress/interpersonal stress pre‐PAE, reported decreased stress levels (p > 0.010–0.018). Participants suffering low job/interpersonal satisfaction pre‐PAE, reported increased job satisfaction (p > 0.015–0.016). These results suggest that individuals who report high levels of stress and dissatisfaction are most likely to benefit from this type of intervention. Future PAE research might: (a) use pilot studies to meet the intervention preferences of employees that are reluctant to participate in SMIs; (b) include a wait‐list control group; use: (c) a follow up education/measures; (d) and organizational level (stressor directed) SMIs at the same time as response directed initiatives. Copyright © 2005 John Wiley & Sons, Ltd. 相似文献