全文获取类型
收费全文 | 3012篇 |
免费 | 334篇 |
国内免费 | 28篇 |
专业分类
耳鼻咽喉 | 53篇 |
儿科学 | 82篇 |
妇产科学 | 119篇 |
基础医学 | 371篇 |
口腔科学 | 45篇 |
临床医学 | 544篇 |
内科学 | 475篇 |
皮肤病学 | 111篇 |
神经病学 | 248篇 |
特种医学 | 178篇 |
外科学 | 325篇 |
综合类 | 129篇 |
一般理论 | 5篇 |
预防医学 | 274篇 |
眼科学 | 47篇 |
药学 | 188篇 |
中国医学 | 29篇 |
肿瘤学 | 151篇 |
出版年
2019年 | 25篇 |
2018年 | 29篇 |
2017年 | 30篇 |
2016年 | 32篇 |
2015年 | 50篇 |
2014年 | 62篇 |
2013年 | 150篇 |
2012年 | 103篇 |
2011年 | 115篇 |
2010年 | 85篇 |
2009年 | 71篇 |
2008年 | 91篇 |
2007年 | 131篇 |
2006年 | 111篇 |
2005年 | 107篇 |
2004年 | 91篇 |
2003年 | 97篇 |
2002年 | 92篇 |
2001年 | 127篇 |
2000年 | 106篇 |
1999年 | 93篇 |
1998年 | 78篇 |
1997年 | 62篇 |
1996年 | 60篇 |
1995年 | 45篇 |
1994年 | 50篇 |
1993年 | 53篇 |
1992年 | 46篇 |
1991年 | 58篇 |
1990年 | 47篇 |
1989年 | 87篇 |
1988年 | 62篇 |
1987年 | 63篇 |
1986年 | 71篇 |
1985年 | 52篇 |
1984年 | 38篇 |
1983年 | 42篇 |
1982年 | 30篇 |
1981年 | 24篇 |
1980年 | 25篇 |
1979年 | 29篇 |
1978年 | 33篇 |
1977年 | 25篇 |
1976年 | 30篇 |
1975年 | 35篇 |
1974年 | 48篇 |
1973年 | 38篇 |
1972年 | 26篇 |
1970年 | 24篇 |
1969年 | 33篇 |
排序方式: 共有3374条查询结果,搜索用时 15 毫秒
991.
Pulmonary challenges in neurotrauma 总被引:1,自引:0,他引:1
Munro N 《Critical Care Nursing Clinics of North America》2000,12(4):457-464
Traumatic injury to the central nervous system presents a formidable clinical challenge to any practitioner. Part of that challenge is to anticipate the pulmonary sequelae that may occur in this patient population. Direct pulmonary trauma commonly occurs with CNS injury and requires immediate treatment to prevent further compromise of the patient's condition. Neurologic deficits can then be compounded by complications such as ARDS and aspiration pneumonia that can be minimized if not prevented. The nurse is a key health care professional who can implement these interventions and effect better patient outcomes. 相似文献
992.
993.
994.
995.
996.
Arranz MJ Munro J Birkett J Bolonna A Mancama D Sodhi M Lesch KP Meyer JF Sham P Collier DA Murray RM Kerwin RW 《Lancet》2000,355(9215):1615-1616
We did association studies in multiple candidate genes to find the combination of polymorphisms that give the best predictive value of response to clozapine in schizophrenic patients. A combination of six polymorphisms in neurotransmitter-receptor-related genes resulted in 76.7% success in the prediction of clozapine response (p=0.0001) and a sensitivity of 95% (+/- 0.04) for satisfactory response. These results will form the basis for a simple test to enhance the usefulness of clozapine in psychiatric treatment. 相似文献
997.
Customized acoustic transform functions and their accuracy at predicting real-ear hearing aid performance 总被引:3,自引:0,他引:3
OBJECTIVE: The purpose of the study was to evaluate the validity of predicting the real-ear aided response by adding customized acoustic transform functions to the performance of a hearing aid in a 2-cc coupler. DESIGN: The real-ear hearing aid response, the real-ear-to-coupler difference (RECD/HA2), and field to behind-the-ear microphone transfer functions were measured in both ears of 24 normally hearing subjects using probe-tube microphone equipment. The RECD/HA2 transform function was obtained using both insert earphones and with the hearing aid/ pressure comparison method. An RECD/HA2 transfer function was also obtained with a customized earmold, ER-3A foam tip, and an oto-admittance tip. RESULTS: Validity estimates were calculated as the difference between the derived and measured real-ear response. The derived response was generally within 5 dB of the measured real-ear response when it incorporated an RECD/HA2 transform function obtained with a customized earmold for the specific ear in question. Discrepancies increased when the RECD/HA2 transfer function was obtained from the same subject but the opposite ear. There were significant differences between the RECD/HA2 transform function obtained with customized and temporary earmolds. As a result, the derived response incorporating these transforms differed significantly from the measured real-ear response obtained with the customized earmold. The insert earphone and the hearing aid RECD/HA2 transfer function were equally valid. CONCLUSIONS: The derived response may be used as a substitute for in situ hearing aid response procedures when it incorporates acoustic transform functions obtained with a customized earmold from the specific ear in question. 相似文献
998.
999.
McLean W. H. Irwin; Irvine Alan D.; Hamill Kevin J.; Whittock Neil V.; Coleman-Campbell Carrie M.; Mellerio Jemima E.; Ashton Gabrielle S.; Dopping-Hepenstal Patricia J. H.; Eady Robin A. J.; Jamil Tanvir; Phillips Roderic J.; Shabbir S. Ghulam; Haroon Tahir S.; Khurshid Khawar; Moore Jonathan E.; Page Brian; Darling Jonathan; Atherton David J.; van Steensel Maurice A. M.; Munro Colin S.; Smith Frances J. D.; McGrath John A. 《Human molecular genetics》2004,13(3):365
This article 相似文献
1000.