全文获取类型
收费全文 | 2958篇 |
免费 | 297篇 |
国内免费 | 4篇 |
专业分类
耳鼻咽喉 | 23篇 |
儿科学 | 97篇 |
妇产科学 | 40篇 |
基础医学 | 411篇 |
口腔科学 | 61篇 |
临床医学 | 432篇 |
内科学 | 653篇 |
皮肤病学 | 41篇 |
神经病学 | 237篇 |
特种医学 | 98篇 |
外科学 | 324篇 |
综合类 | 37篇 |
一般理论 | 2篇 |
预防医学 | 354篇 |
眼科学 | 48篇 |
药学 | 240篇 |
中国医学 | 2篇 |
肿瘤学 | 159篇 |
出版年
2022年 | 17篇 |
2021年 | 35篇 |
2020年 | 22篇 |
2019年 | 48篇 |
2018年 | 51篇 |
2017年 | 39篇 |
2016年 | 45篇 |
2015年 | 66篇 |
2014年 | 89篇 |
2013年 | 104篇 |
2012年 | 144篇 |
2011年 | 146篇 |
2010年 | 78篇 |
2009年 | 87篇 |
2008年 | 152篇 |
2007年 | 157篇 |
2006年 | 160篇 |
2005年 | 168篇 |
2004年 | 126篇 |
2003年 | 154篇 |
2002年 | 126篇 |
2001年 | 95篇 |
2000年 | 79篇 |
1999年 | 75篇 |
1998年 | 40篇 |
1997年 | 33篇 |
1996年 | 36篇 |
1995年 | 33篇 |
1994年 | 24篇 |
1993年 | 22篇 |
1992年 | 54篇 |
1991年 | 53篇 |
1990年 | 46篇 |
1989年 | 46篇 |
1988年 | 47篇 |
1987年 | 42篇 |
1986年 | 47篇 |
1985年 | 43篇 |
1984年 | 32篇 |
1983年 | 27篇 |
1982年 | 22篇 |
1979年 | 27篇 |
1978年 | 19篇 |
1977年 | 21篇 |
1976年 | 23篇 |
1975年 | 27篇 |
1974年 | 18篇 |
1973年 | 23篇 |
1970年 | 21篇 |
1969年 | 16篇 |
排序方式: 共有3259条查询结果,搜索用时 31 毫秒
1.
Lorraine Greaves Nancy Poole Natalie Hemsing 《Journal of obstetric, gynecologic, and neonatal nursing : JOGNN / NAACOG》2019,48(1):90-98
Rates of smoking during pregnancy remain high in Canada, and cessation rates are low among women who are younger than 24 years and who are socially disadvantaged, that is, have few social and economic resources because of poverty, violence, or mental health issues. On the basis of findings from literature reviews and consultation with policy makers, we developed and operationalized four approaches that can be used by health care providers to tailor interventions for tobacco use in pregnancy. These four approaches are woman centered, trauma informed, harm reducing, and equitable. Public health initiatives that address smoking in young and socially disadvantaged women could be more sharply focused by shifting to such tailored approaches that are grounded in social justice aims, span pre- and postpregnancy periods, and can be used to address women’s social contexts and concerns. 相似文献
2.
Arjenne H.M. Gussenhoven Amika S. Singh S. Theo Goverts Marten van Til Johannes R. Anema Sophia E. Kramer 《International journal of audiology》2015,54(8):507-517
Objective: A multidisciplinary vocational rehabilitation programme, the Vocational Enablement Protocol (VEP) was developed to address the specific needs of employees with hearing difficulties. In the current study we evaluated the process of implementing the VEP in audiologic care among employees with hearing impairment. Design: In conjunction with a randomized controlled trial, we collected and analysed data on seven process parameters: recruitment, reach, fidelity, dose delivered, dose received and implemented, satisfaction, and perceived benefit. Study sample: Sixty-six employees with hearing impairment participated in the VEP. The multidisciplinary team providing the VEP comprised six professionals. Results: The professionals performed the VEP according to the protocol. Of the recommendations delivered by the professionals, 31% were perceived as implemented by the employees. Compliance rate was highest for hearing-aid uptake (51%). Both employees and professionals were highly satisfied with the VEP. Participants rated good perceived benefit from it. Conclusions: Our results indicate that the VEP could be a useful treatment for employees with hearing difficulties from a process evaluation perspective. Implementation research in the audiological setting should be encouraged in order to further provide insight into parameters facilitating or hindering successful implementation of an intervention and to improve its quality and efficacy. 相似文献
3.
4.
5.
William B. Mitchell Patricia Marten Dibartolo Timothy A. Brown David H. Barlow 《Archives of sexual behavior》1998,27(2):197-207
Effects of positive and negative musical mood induction on subjective and objective sexual arousal were examined in a group of sexually functional males (N = 24). Subjects evidenced significantly greater objective and subjective sexual response in the positive mood induction condition relative to both baseline and a neutral control condition. In contrast, the negative mood induction condition yielded significantly less objective sexual arousal than baseline and a neutral control condition. Data provide additional empirical support for the hypothesized impact of mood on sexual arousal. 相似文献
6.
Chondrons were isolated from human and canine osteoarthritic cartilage using low-speed homogenization techniques. Changes in chondron morphology were evaluated using differential interference-contrast microscopy, phase-contrast microscopy, and histochemical and ultrastructural methods. Chondrocyte viability was assessed using fluorescein diacetate staining, and chondron metabolism was investigated using autoradiography. The results suggest that initial changes in the collagen and proteoglycan distribution within the chondron are followed by chondrocyte proliferation to form clusters. These techniques offer the potential to study cell matrix interactions in degenerative osteoarthritis. 相似文献
7.
8.
D C Poole 《Medicine and science in sports and exercise》1986,18(6):703-705
9.
Melissa Hurwitz Manuel G Garcia Robert L Poole John A Kerner 《Nutrition in clinical practice》2004,19(3):305-308
The standard of care for patients with cholestasis (direct bilirubin >or=2 mg/dL) while receiving parenteral nutrition (PN) solutions is to reduce or discontinue the copper and manganese. The repercussions of this action have not been studied. Two adult case reports document low serum copper levels associated with clinical symptoms of copper deficiency after the removal of copper from their PN solutions. We now describe the first known series of pediatric patients to develop copper deficiency after copper was removed from their PN solutions. 相似文献
10.
Peripheral analgesic activities of peptides related to alpha-melanocyte stimulating hormone and interleukin-1 beta 193-195.
下载免费PDF全文
![点击此处可从《British journal of pharmacology》网站下载免费的PDF全文](/ch/ext_images/free.gif)
S. Poole A. F. Bristow B. B. Lorenzetti R. E. Das T. W. Smith S. H. Ferreira 《British journal of pharmacology》1992,106(2):489-492
1. The hyperalgesic effects of interleukin-1 beta (IL-1 beta) and prostaglandin E2 (PGE2) were measured in rats. 2. Hyperalgesic responses to IL-1 beta were inhibited in a dose-dependent manner by alpha-melanocyte stimulating hormone (alpha-MSH)-related peptides with the following order of potency: [N1(4),D-Phe7]alpha-MSH greater than alpha-MSH greater than Lys-D-Pro-Val greater than Lys-Pro-Val greater than Lys-D-Pro-Thr greater than D-Lys-Pro-Thr. 3. Hyperalgesic responses to PGE2 were not inhibited by Lys-D-Pro-Thr and D-Lys-Pro-Thr but were inhibited in a dose-dependent manner by the other peptides with the same order of potency as against IL-1 beta. 4. The potencies of [N1(4), D-Phe7]alpha-MSH and alpha-MSH were greatly diminished by deletion of their C-terminal tripeptide, Lys11-Pro-Val13. 5. Nor-binaltorphimine (Nor-BNI) largely reversed the analgesic effects of alpha-MSH, [N1(4), D-Phe7]alpha-MSH, Lys-Pro-Val and Lys-D-Pro-Val indicating that kappa-opioid receptors mediated the analgesic activity of these peptides. 6. Nor-BNI did not antagonize the inhibition by Lys-D-Pro-Thr and D-Lys-Pro-Thr of IL-1 beta evoked hyperalgesia indicating that these peptides were not acting via kappa-opioid receptors. 相似文献