全文获取类型
收费全文 | 16484篇 |
免费 | 6166篇 |
国内免费 | 70篇 |
专业分类
耳鼻咽喉 | 321篇 |
儿科学 | 395篇 |
妇产科学 | 429篇 |
基础医学 | 272篇 |
口腔科学 | 1368篇 |
临床医学 | 6041篇 |
内科学 | 3858篇 |
皮肤病学 | 548篇 |
神经病学 | 2214篇 |
特种医学 | 505篇 |
外科学 | 2258篇 |
综合类 | 23篇 |
现状与发展 | 2篇 |
预防医学 | 2541篇 |
眼科学 | 338篇 |
药学 | 270篇 |
肿瘤学 | 1337篇 |
出版年
2024年 | 219篇 |
2023年 | 1283篇 |
2022年 | 334篇 |
2021年 | 693篇 |
2020年 | 1117篇 |
2019年 | 458篇 |
2018年 | 1475篇 |
2017年 | 1625篇 |
2016年 | 1608篇 |
2015年 | 1622篇 |
2014年 | 1863篇 |
2013年 | 1811篇 |
2012年 | 651篇 |
2011年 | 669篇 |
2010年 | 1070篇 |
2009年 | 1429篇 |
2008年 | 500篇 |
2007年 | 318篇 |
2006年 | 433篇 |
2005年 | 254篇 |
2004年 | 199篇 |
2003年 | 180篇 |
2002年 | 143篇 |
2001年 | 269篇 |
2000年 | 129篇 |
1999年 | 225篇 |
1998年 | 277篇 |
1997年 | 289篇 |
1996年 | 290篇 |
1995年 | 247篇 |
1994年 | 155篇 |
1993年 | 144篇 |
1992年 | 106篇 |
1991年 | 85篇 |
1990年 | 64篇 |
1989年 | 86篇 |
1988年 | 67篇 |
1987年 | 50篇 |
1986年 | 44篇 |
1985年 | 47篇 |
1984年 | 33篇 |
1983年 | 23篇 |
1982年 | 22篇 |
1981年 | 18篇 |
1980年 | 15篇 |
1979年 | 8篇 |
1978年 | 13篇 |
1977年 | 10篇 |
1976年 | 8篇 |
1971年 | 9篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
71.
M.M. Bialoskurski MA RN RM C.L. Cox MSc PhD RN & R.D. Wiggins PhD 《Journal of advanced nursing》2002,37(1):62-69
AIM: The aim of this study was to investigate the nature and organization of maternal needs and priorities in a neonatal unit. BACKGROUND: The relationship between maternal needs and priorities appears to be an under studied area in neonatal nursing. METHODS: A quantitative survey was carried out based on 209 mothers with premature infants. Two self-assessment schedules were used: critical care maternal needs inventory (J. Leske, Heart and Lung 15, 27-42) and a ranking scale. The data were analysed with multivariate analysis. FINDINGS: Data analysis revealed clear priorities in maternal needs. In particular the need for accurate infant related information was a priority for 93% of the mothers. Good communication practices with professionals were also valued. The mothers displayed altruistic behaviour, and self-related needs took second place. It is proposed that maternal needs demonstrate a hierarchical organization. CONCLUSION: It is important for nurses to consider the individual needs of the mothers, simply because the satisfaction of these needs is essential for maternal well-being. 相似文献
72.
73.
Martien T. Muller MA PhD Loes Pijnenborg MD PhD Bregje D. Onwuteaka-Philipsen MSc Gerrit van der Wal MD PhD Jacques Th.M. van Eijk MA PhD 《Journal of advanced nursing》1997,26(2):424-430
The researchers wanted to obtain insight into the cooperation between physicians and nurses with regard to active euthanasia and physician-assisted suicide (EAS). In study I a stratified random sample of 203 clinical specialists, 152 general practitioners (GPs) and 50 nursing home physicians (NHPs) participated. In study II a random sample of 521 GPs was drawn from the province of North Holland and a random sample of 521 GPs was drawn from the rest of the Netherlands. For study III all NHPs were approached. Data were collected by means of an interview in study I. In studies II and III an anonymous, postal questionnaire was used. Approximately half of the GPs did not consult with nurses about a patient's request for EAS, the intention to administer EAS, and the actual administration. In 5% of cases, the NHPs and the specialists did not consult with nurses concerning these aspects. The GPs and NHPs indicated in 4% and 3% of the cases, respectively, that nurses administered the lethal drug(s) to the patients; the corresponding figure for the specialists was 21%. Almost all GPs and NHPs and about three-quarters of the specialists thought that nurses should never be allowed to administer EAS. 相似文献
74.
75.
Jill Macleod Clark PhD BSc RGN Jill Maben MSc BA RGN Karen Jones BA RHV RGN 《Journal of advanced nursing》1997,26(1):161-168
This is the first of two papers which address aspects of the findings of a large scale study commissioned by the English National Board which set out to examine the impact of Project 2000 on perceptions of the philosophy and practice of nursing. The findings presented here suggest that there have been fundamental shifts in perceptions of the nature and discipline of nursing. Students and diplomates of the course perceive themselves as knowledgeable doers, with their practice well grounded in theory and research. They value the interpersonal skills teaching and place the patient firmly at the centre of care delivery, viewing the patient holistically and being prepared to be fierce patient advocates where necessary. It is difficult to determine the extent to which these shifts can be attributed to the Project 2000 course, although the Project 2000 approach to education appears to be an important factor. 相似文献
76.
Patrick Callaghan RN BSc MSc Cheung Siu Shan RN BN Lau Suk Yu RN BN Lo Wai Ching RN BN Tsui Lai Kwan RN BN 《Journal of advanced nursing》1997,26(1):33-40
This study investigated whether previous contact with mental illness affected the attitudes to mental illness (AMI) of general student nurses in Hong Kong — the contact hypothesis. We employed a quasi-experimental design. We compared the attitudes to mental illness of students who had previous contact with mental illness through having taken a psychiatric secondment with those who had not taken a psychiatric secondment. Also, we compared the AMI of: students who had taken other courses related to mental illness with those who had not; those who had a family history of mental illness with those who had not; and those who lived with a mentally ill relative with those who did not. We found that previous contact with mental illness had no significant effect on the attitudes to mental illness of the students. In other words our findings do not support the contact hypothesis. Our sample expressed positive general attitudes to mental illness when presented with general issues about mental illness. However, their attitudes were less positive when presented with specific issues about mental illness that might impinge upon their daily lives. We discuss the implications of these findings for mental health nursing practice, education and research. 相似文献
77.
78.
79.
EMMAPIRILÄMSc MATALEENAPARIKKADDS NUNGAVARM S. RAMAMURTHYPhD PÄIVIMAISIPhD STEVEMCCLAIN MD ALLANKUCINEDDS TAINATERVAHARTIALADDS KAIUPRIKKMD LORNE M. GOLUBDMD TUULASALOPhD & TIMOSORSAPhD 《Wound repair and regeneration》2002,10(1):38-51
Estrogen deficiency is associated with impaired cutaneous wound healing. Remodeling of the extracellular matrix in wound healing involves the action of matrix metalloproteinases on basement membrane zone components, especially laminin-5. We studied the effects of estrogen and a potent matrix metalloproteinase inhibitor, chemically modified non-antimicrobial tetracycline, CMT-8, on wound healing in ovariectomized rats. At the tissue level, laminin-5 gamma2-chain expression was decreased and the migration-inductive 80 kDa form of laminin-5 gamma2-chain was absent in ovariectomized rats when compared with sham and CMT-8- or estrogen-treated ovariectomized animals as detected by Western blotting. The highest levels of gelatinolytic activity (matrix metalloproteinase-2 and -9) were found in sham animals. Levels were reduced in ovariectomized rats and were lowest after treating ovariectomized rats with CMT-8 or estrogen as analyzed by functional activity assay and zymography. The total amount of membrane type 1-matrix metalloproteinase was unchanged in all groups. We conclude that CMT-8 and estrogen can promote wound healing in ovariectomized rats, not only by normalizing wound bed total collagen content and structure, but also by recovering the expression and processing of key molecules in wound healing, i.e., laminin-5 gamma2-chain. This study shows, for the first time, the role of estrogen and CMT-8 in laminin-5 gamma2-chain modulation in vivo. 相似文献
80.
Youth suicide constitutes a considerable public health problem in many European countries. Suicide mortality in adolescents and young adults has increased during the 1980s and 1990s in several European countries and predominantly in young males. This paper summarises the international discussion on potential reasons for these trends, including changes in ascertainment practices, in the prevalence of psychopathology (mainly depression and substance abuse), in psychosocial and socio-economic conditions and in the methods chosen for suicidal behaviour. Potential reasons for the gender differences in trends are scrutinised. 相似文献