全文获取类型
收费全文 | 42971篇 |
免费 | 3009篇 |
国内免费 | 148篇 |
专业分类
耳鼻咽喉 | 464篇 |
儿科学 | 1377篇 |
妇产科学 | 1175篇 |
基础医学 | 5919篇 |
口腔科学 | 493篇 |
临床医学 | 6271篇 |
内科学 | 8242篇 |
皮肤病学 | 712篇 |
神经病学 | 4353篇 |
特种医学 | 810篇 |
外国民族医学 | 1篇 |
外科学 | 3453篇 |
综合类 | 763篇 |
一般理论 | 42篇 |
预防医学 | 5009篇 |
眼科学 | 882篇 |
药学 | 2980篇 |
中国医学 | 79篇 |
肿瘤学 | 3103篇 |
出版年
2023年 | 223篇 |
2022年 | 469篇 |
2021年 | 863篇 |
2020年 | 478篇 |
2019年 | 799篇 |
2018年 | 931篇 |
2017年 | 721篇 |
2016年 | 803篇 |
2015年 | 974篇 |
2014年 | 1308篇 |
2013年 | 1993篇 |
2012年 | 3011篇 |
2011年 | 3169篇 |
2010年 | 1603篇 |
2009年 | 1557篇 |
2008年 | 2843篇 |
2007年 | 3065篇 |
2006年 | 3142篇 |
2005年 | 3092篇 |
2004年 | 3008篇 |
2003年 | 2825篇 |
2002年 | 2615篇 |
2001年 | 373篇 |
2000年 | 270篇 |
1999年 | 374篇 |
1998年 | 483篇 |
1997年 | 417篇 |
1996年 | 378篇 |
1995年 | 361篇 |
1994年 | 267篇 |
1993年 | 297篇 |
1992年 | 206篇 |
1991年 | 205篇 |
1990年 | 185篇 |
1989年 | 179篇 |
1988年 | 191篇 |
1987年 | 152篇 |
1986年 | 131篇 |
1985年 | 150篇 |
1984年 | 190篇 |
1983年 | 185篇 |
1982年 | 237篇 |
1981年 | 176篇 |
1980年 | 184篇 |
1979年 | 110篇 |
1978年 | 107篇 |
1977年 | 112篇 |
1976年 | 86篇 |
1975年 | 71篇 |
1974年 | 78篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
31.
A model for training the trainers of child care providers that employs Vygotsky's framework of the Zone of Proximal Development is described. This efficient training mechanism proposes mentoring relationships as a means to meet the developmental needs of experienced child care professionals and improve the quality of existing child care programs.The authors would like to thank Dr. Bille Thomas and the satellite resource center directors and staff members for their work on the project. 相似文献
32.
Gale Haradon Barbara Bascom Cristiana Dragomir Virginia Scripcaru 《Occupational therapy international》1994,1(4):250-260
Infants living in an orphanage (n = 22) in Romania were assessed on the Test of Sensory Functions in Infants (TSFI). Testing of the institutionalized infants was done before and 6 months after an enriched caregiver intervention program. Results showed significant changes in areas of reactivity to tactile deep pressure, visual-tactile integration, oculomotor control, reactivity to vestibular stimulation and total test responses. No significant changes occurred in the area of adaptive motor functions. Effects of sensory deprivation resulting from institutional settings and changes that can occur from enriched caregiver environments are discussed. 相似文献
33.
Enza-Maria Valente Anjum Misbahuddin Francesco Brancati Mark R Placzek Barbara Garavaglia Sergio Salvi Andrea Nemeth Charles Shaw-Smith Nardo Nardocci Anna-Rita Bentivoglio Alfredo Berardelli Roberto Eleopra Bruno Dallapiccola Thomas T Warner 《Movement disorders》2003,18(9):1047-1051
The epsilon-sarcoglycan gene (SGCE) on human chromosome 7q21 has been reported to be a major locus for inherited myoclonus-dystonia. Linkage to the SGCE locus has been detected in the majority of families tested, and mutations in the coding region have been found recently in families with autosomal dominant myoclonus-dystonia. To evaluate the relevance of SGCE in myoclonus-dystonia, we sequenced the entire coding region of the epsilon-sarcoglycan gene in 16 patients with either sporadic or familial myoclonus-dystonia. No mutations were found. This study suggests that epsilon-sarcoglycan does not play an important role in sporadic myoclonus-dystonia and supports genetic heterogeneity in familial cases. 相似文献
34.
Gerald F. Powell MD Barbara A. Bettes PhD 《Child psychiatry and human development》1992,22(3):185-198
A controversy exists regarding the classification of nonorganic failure to thrive within the psychiatric nomenclature. There are a number of DSM-III-R diagnoses that may be applied to NOFTT, including Reactive Attachment Disorder of Infancy (RADI) and Major Depressive Disorder (MDD). The behaviors characteristic of NOFTT are symptomatic of depression, and are similar to those exhibited by infants with anaclitic depression as well as those of the adult with depression. The correspondence of the behaviours of NOFTT and the DSM-III-R criteria for Major Depression are reviewed, as are the conceptual and therapeutic reasons to view NOFTT infants as suffering from Depression. 相似文献
35.
M.D.Robert R. Bahnson M.D.B. Simon Slasky M.D.Marc S. Ernstoff M.D.Barbara F. Banner 《Urology》1990,35(6)
The ultrasonographic characteristics of an epidermoid cyst of the testicle are presented. Since these, findings are similar to other published case reports, preoperative sonographic diagnosis of this lagon may be possible. 相似文献
36.
JoAnn D'Avirro Teresa Dotson Barbara LaPierre Wendy Marshall MaryBeth Mishler Jennifer L. Tanger 《Rehabilitation nursing》1996,21(3):132-138
Restructuring in health care does not have to compromise the pursuit of clinical excellence and quality patient care. The clinical advancement program (CAP) at the Hospital for Special Care is a newly developed multidisciplinary reward and recognition program for clinical staff. The program is integrated into the hospital's structure of service line management and, unlike traditional advancement programs, is open to all levels of care providers: professional personnel, technical staff, and aides. This article describes the basic features of the CAP model and how it was developed by a multidisciplinary task force. 相似文献
37.
Barbara J. Hart 《Clinical reviews in allergy & immunology》1995,13(2):115-133
Conclusion Since 1990 our knowledge of the biology of domestic mites has increased in a number of areas. Taxonomically, keys that are
easier to use by nonacarologists have been made available and should help in clinical studies of mite populations in the home
environment. From house dust surveys our understanding of the geographical distribution ofE. maynei andB. tropicalis has progressed. Detailed studies of mite populations in mattresses has clarified the distribution of mites within this habitat,
which may eventually aid in targeting control of mites in mattresses. In relation to this, a clearer understanding of the
influence of climatic factors on the mattress microhabitat has led to investigations into the potential use of ventilation
as a means of domestic mite control. Our increased understanding of the survival of desiccation resistant protonymphs is important
in this regard. More information on the biochemistry of mite enzymes has been obtained from studies to characterize potentially
allergenic mite enzymes. Finally, the relationship between house dust mites and fungi has been resolved with respect to both
nutritional ecology and allergen production. Our progress in all of these areas serves to demonstrate the invaluable contribution
that biological research can make to clinical studies of domestic mite epidemiology, allergen production, and control. 相似文献
38.
39.
40.
Tushar M Ranchod Daynia E Ballot Alma M Martinez Barbara J Cory Victor A Davies J Colin Partridge 《Suid-Afrikaanse tydskrif vir geneeskunde》2004,94(11):913-916
BACKGROUND: Little is known about parental experience and decision making with regard to premature infants requiring intensive care in developing countries. We undertook this study to characterise parents' experience of physician counselling and their role in making life-support decisions for very low-birth-weight (VLBW) (birth weight < 1 501 g) infants born in South Africa's public-sector neonatal intensive care units (NICUs). METHODS: Parents of surviving VLBW infants treated in three Johannesburg-area public hospitals and attending follow-up clinics in August 2001 were interviewed regarding their experience of perinatal counselling on outcomes (pain, survival, disability), perception of actual and optimal decision making, and satisfaction with NICU communication. RESULTS: Parents of 51 infants were interviewed. Seventy-five per cent of parents reported antenatal counselling by physicians on at least one perinatal topic (severe disability, pain, death, finances or religious/moral considerations). The majority of parents (> 60%) who received counselling thought that these topics had been discussed adequately. Most parents reported that doctors had the primary decision-making role, either without consulting them (41%) or after consulting them (37%). Joint decision making was rare (14%). Parents wanted more input in life-support decisions than they reported being given. CONCLUSION: Counselling is not consistently provided in public-sector hospitals in Johannesburg. Parents of premature infants want a larger share in NICU decision making than they currently experience. Most parents were satisfied with communication later during their infant's hospitalisation. South Africa presents a unique opportunity to study the use of advanced medical technologies in a nation with marked disparities in access to care. 相似文献