全文获取类型
收费全文 | 27436篇 |
免费 | 3726篇 |
国内免费 | 195篇 |
专业分类
耳鼻咽喉 | 492篇 |
儿科学 | 739篇 |
妇产科学 | 789篇 |
基础医学 | 2668篇 |
口腔科学 | 441篇 |
临床医学 | 4948篇 |
内科学 | 5047篇 |
皮肤病学 | 784篇 |
神经病学 | 2496篇 |
特种医学 | 838篇 |
外科学 | 3414篇 |
综合类 | 486篇 |
现状与发展 | 2篇 |
一般理论 | 7篇 |
预防医学 | 3652篇 |
眼科学 | 523篇 |
药学 | 1519篇 |
2篇 | |
中国医学 | 119篇 |
肿瘤学 | 2391篇 |
出版年
2024年 | 105篇 |
2023年 | 639篇 |
2022年 | 470篇 |
2021年 | 935篇 |
2020年 | 941篇 |
2019年 | 742篇 |
2018年 | 1314篇 |
2017年 | 1102篇 |
2016年 | 1220篇 |
2015年 | 1386篇 |
2014年 | 1531篇 |
2013年 | 2147篇 |
2012年 | 2026篇 |
2011年 | 1950篇 |
2010年 | 1330篇 |
2009年 | 1404篇 |
2008年 | 1478篇 |
2007年 | 1429篇 |
2006年 | 1320篇 |
2005年 | 1159篇 |
2004年 | 991篇 |
2003年 | 886篇 |
2002年 | 832篇 |
2001年 | 286篇 |
2000年 | 184篇 |
1999年 | 244篇 |
1998年 | 382篇 |
1997年 | 395篇 |
1996年 | 379篇 |
1995年 | 302篇 |
1994年 | 235篇 |
1993年 | 182篇 |
1992年 | 145篇 |
1991年 | 128篇 |
1990年 | 117篇 |
1989年 | 123篇 |
1988年 | 89篇 |
1987年 | 81篇 |
1986年 | 80篇 |
1985年 | 87篇 |
1984年 | 68篇 |
1983年 | 69篇 |
1982年 | 59篇 |
1981年 | 62篇 |
1980年 | 30篇 |
1979年 | 24篇 |
1978年 | 34篇 |
1977年 | 27篇 |
1976年 | 26篇 |
1967年 | 27篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
51.
Lesley Barclay RN CM BA MEd Louise Everitt RN CM Post Grad Dip-Comm Health Frances Rogan RN CM B App S M Com Nurs Virginia Schmied RN CM BA MA Hons Aileen Wyllie RN CM BA MHPEd 《Journal of advanced nursing》1997,25(4):719-728
This paper presents the results of a qualitative study conducted by midwife researchers into women's experience of new motherhood. Data were collected using focus groups involving 55 first-time mothers and analysed using grounded theory method. The analysis produced six categories: 'realizing', 'unready', 'drained', 'aloneness', 'loss' and 'working it out'. The core category, 'becoming a mother', integrates all other categories and encapsulates the process of change experienced by women. Also explained are factors mediating the often distressing experience of becoming a mother. The analysis provides a conceptualization of early motherhood enabling the development of strategies for midwives, nurses and others helping women negotiate this challenge. 相似文献
52.
Mary L. Nolan MA BA RGN 《Journal of advanced nursing》1997,25(6):1198-1204
The history of antenatal education throws light on why contemporary class attenders represent only a particular section of the childbearing population. Since Victorian times, the non-availability of the women's network to middle class women has forced them to seek knowledge of their own bodies, confidence in their childbearing capacities and the support of other women through formal educational opportunities. Research suggests that antenatal classes often fail to provide women with a realistic account of birth and parenting to replace the lived experience of earlier decades and may not be facilitated in such a way as to create the support groups which class attenders critically need. Teaching approaches often promote dependency amongst clients rather than nurturing the decision-making skills required by a consumer-driven maternity service. 相似文献
53.
The results of a survey of children attending an Accident and Emergency (A & E) Department following ingestion of alcohol are reported. Data were analysed to indicate age and sex of children, date and time of attendance, method of transport to hospital, whether accompanied to hospital and if so by whom, and whether admitted or discharged. Trends in children's consumption of alcohol, as observed by the author, are discussed. 相似文献
54.
This paper reports the psychometric testing of the Worthing Chemotherapy Questionnaire(WCQ). The WCQ is a patient self-report instrument to document side-effects of chemotherapy. Literature review of relevant studies shows that psychometric testing of similar instruments is rarely rigorous. Content validity for the WCQ was established in five ways: literature review, Delphi review among oncology staff, pre-pilot unstructured interviews, pilot study and amendment of the instrument and items for spontaneous reporting of problems on the questionnaire. A three-stage approach to construct validity was used. The hypothesis adopted was that as certain cytotoxic agents cause stomatitis, incidence and severity of stomatitis will decrease following cessation of treatment. Stage 1: factor analysis confirmed the presence of a sole factor, with an eigenvalue of 5.3, for mouth problems which explained 65.5% of the variance. Stage 2: the hypothesis was confirmed using research findings. Stage 3: the Wilcoxon test showed highly significant results for during and post chemotherapy stomatitis scores. Reliability of the questionnaire was assessed using the test-retest method. Weighted Kappa was chosen as the test statistic. A median value of w K=0.87 was obtained. The results indicate that the WCQ is a reliable and valid instrument. 相似文献
55.
Susan Kirk MSc BNurs RGN RM RHV DNCert Caroline Carlisle MSc BA RGN RM DNCert DipCouns RNT Karen A. Luker PhD BNurs RGN RHV DNCert 《Journal of advanced nursing》1997,26(5):1036-1044
A national study was conducted between 1991 and 1994 to explore and describe the changing role of the nurse teacher following the introduction of Project 2000 pre-registration nursing courses. Multiple methods were used to collect data from a wide variety of respondents (nurse teachers, midwife teachers, clinical nurses, health service managers and higher education lecturers). This paper presents the findings relating to the impact of Project 2000 and the move into higher education on the continuing educational needs of nurse teachers. Views on college strategies for staff development, the changing nature of teachers'academic and professional development needs and the problems of the conflicting demands experienced are reported. The research highlights the need for clinical credibility to be clearly defined in relation to nurse teachers and for educational institutions to place more emphasis on teachers'clinical development if the rhetoric of policy is to become a reality. 相似文献
56.
Isometric muscle strength is an indicator of self-reported physical functional disability in patients with rheumatoid arthritis 总被引:4,自引:1,他引:3
The objective of our study was to examine (1) whether isometric muscle
strength contributes to the explanation of the physical functional
disability of a rheumatoid arthritis (RA) patient population after
accounting for other disease parameters and demographic variables and (2)
whether change in isometric muscle strength is an indicator of change in
physical functional disability. Sixty-five consecutive patients fulfilling
the American Rheumatism Association 1987 revised criteria for RA were
included in the study. Isometric muscle strength was measured with a
validated Muscle Strength Index (MSI) calculated as the mean score of
standardized isometric extension and flexion strength of the knee and elbow
joints. Physical functional disability was measured with the physical
dimension of the Health Assessment Questionnaire (HAQ). For 56 patients, we
could obtain 1 yr follow-up data. Cross-sectionally, there was a
significant correlation (r = - 0.51, P < 0.01) between the MSI and the
HAQ. Muscle strength remained a significant determinant of the HAQ in
multivariate analysis accounting for disease and demographic variables.
Longitudinally, change in MSI explained additional variance of change in
HAQ after accounting for change in pain, the most important correlate of
change in HAQ.
相似文献
57.
A 33 year-old Sephardic Jewish man with familial mediterranean fever (FMF), presented during a 7 year period, 6 episodes of aseptic meningitis, improving within less than 24 h after spinal tap. Cerebrospinal fluid analysis showed a mixed leucocytic pleocytosis ranging from 100 to 1,000 cell/mm3. Spinal fluid cultures for bacteria, viruses and viral antibodies were always negative. Our case supports other reports showing that recurrent aseptic meningitis, although rare, may occur in FMF. It usually responds to treatment with colchicine, like other manifestations of the disease. FMF meningitis has been compared to Mollaret's meningitis whose cause is undetermined. However, Mollaret's meningitis, unlike FMF, is sporadic and ubiquitous, is not transmitted genetically and affects men and women equally. Moreover, in Mollaret's meningitis transient neurological abnormalities, such as signs of encephalitis have often been reported: polyserositis or associated amylosis are absent, there is no biological inflammatory syndrome, and in 65% of the patients the CSF contains specific large mononuclear-derived cells called endothelial cells. Such abnormalities have not been described in FMF. 相似文献
58.
Postoperative radiotherapy for locally advanced colon cancer 总被引:1,自引:0,他引:1
Dr. E. Henry Amos MD William M. Mendenhall MD Patricia J. McCarty BA John O. Gage MD J. Logan Emlet MD Gerald C. Lowrey MD Craig A. Peterson MD Warren R. Amos MD 《Annals of surgical oncology》1996,3(5):431-436
Background: The role of adjuvant postoperative radiotherapy for locally advanced colon cancer is not well documented.
Methods: Seventy-eight patients who underwent a complete resection of B2-C colon cancer received postoperative radiotherapy. Twenty-eight
patients received ⩽45 Gy; 50 patients received 50–55 Gy. Twenty-seven patients received adjuvant fluorouracil-based chemotherapy.
All patients were followed for a minimum of 3 years; no patients were lost to follow-up.
Results: The overall local control rate was 88%. The 5-year actuarial rate of local control was 96% after 50–55 Gy postoperative radiotherapy
compared with 76% after <50 Gy (p=0.0095). Multivariate analysis of local control showed that only radiotherapy dose significantly
influenced this end point. Cause-specific survival rates at 5 years were B2, 67%; B3, 90%; C1, 100%; C2, 61%; C3, 36%; and
overall, 63%. Multivariate analysis of cause-specific survival showed that only stage significantly influenced this end point.
Bowel obstruction caused by adhesions developed in three patients and required a laparotomy; radiation-induced sarcoma developed
in one additional patient.
Conclusions: Postoperative radiotherapy appears to reduce the risk of local recurrence in patients with locally advanced colon cancer.
The optimal dose is probably 50–55 Gy at 1.8 Gy per fraction. Postoperative radiotherapy may improve cause-specific survival
for patients with stages B3 and C2 cancers. 相似文献
59.
60.
G Hussein Rassool MSc BA RMN RCNT RNT FETC CertEd CertCouns CertSupervision & Consultation 《Journal of advanced nursing》1993,18(9):1401-1407
The widespread use and misuse of alcohol, drug and other psychoactive substances are major health and social concerns that affect the lives of many The social and health sequelae of psychoactive drugs and alcohol are preventable and manageable with minimal interventions Nurses and other health workers can effectively respond to substance misuse problems and their existing generic skills can be easily adapted in working with substance misusers This paper considers some of the issues such as the extent of the problem, attitudinal considerations, response to substance misusers and a brief outline of the role of the nurse The urgent need for education and training in substance misuse and addictive behaviour for nurse practitioners is also addressed 相似文献