全文获取类型
收费全文 | 1335148篇 |
免费 | 100202篇 |
国内免费 | 4271篇 |
专业分类
耳鼻咽喉 | 16798篇 |
儿科学 | 43582篇 |
妇产科学 | 36356篇 |
基础医学 | 197819篇 |
口腔科学 | 35906篇 |
临床医学 | 129551篇 |
内科学 | 258071篇 |
皮肤病学 | 26371篇 |
神经病学 | 111854篇 |
特种医学 | 48170篇 |
外国民族医学 | 366篇 |
外科学 | 184030篇 |
综合类 | 28772篇 |
现状与发展 | 1篇 |
一般理论 | 460篇 |
预防医学 | 114359篇 |
眼科学 | 28979篇 |
药学 | 98821篇 |
6篇 | |
中国医学 | 3167篇 |
肿瘤学 | 76182篇 |
出版年
2021年 | 10905篇 |
2019年 | 11632篇 |
2018年 | 16313篇 |
2017年 | 12286篇 |
2016年 | 13244篇 |
2015年 | 15190篇 |
2014年 | 20796篇 |
2013年 | 32046篇 |
2012年 | 44230篇 |
2011年 | 46882篇 |
2010年 | 27072篇 |
2009年 | 24920篇 |
2008年 | 42710篇 |
2007年 | 45051篇 |
2006年 | 45175篇 |
2005年 | 43586篇 |
2004年 | 41561篇 |
2003年 | 39493篇 |
2002年 | 38306篇 |
2001年 | 60843篇 |
2000年 | 62515篇 |
1999年 | 52275篇 |
1998年 | 14578篇 |
1997年 | 13274篇 |
1996年 | 13114篇 |
1995年 | 12456篇 |
1994年 | 11626篇 |
1993年 | 10921篇 |
1992年 | 41567篇 |
1991年 | 40759篇 |
1990年 | 39444篇 |
1989年 | 37340篇 |
1988年 | 34581篇 |
1987年 | 33693篇 |
1986年 | 32150篇 |
1985年 | 30638篇 |
1984年 | 23034篇 |
1983年 | 19590篇 |
1982年 | 11752篇 |
1979年 | 20804篇 |
1978年 | 14814篇 |
1977年 | 12064篇 |
1976年 | 11876篇 |
1975年 | 12110篇 |
1974年 | 14800篇 |
1973年 | 14472篇 |
1972年 | 13356篇 |
1971年 | 12418篇 |
1970年 | 11485篇 |
1969年 | 10410篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
91.
92.
Gerald T Voelbel Marsha E Bates Jennifer F Buckman Gahan Pandina Robert L Hendren 《Neuropsychopharmacology》2006,60(9):942-950
BACKGROUND: Impaired neuropsychological test performance, especially on tests of executive function and attention, is often seen in children diagnosed with autism spectrum disorders (ASD). Structures involved in fronto-striatal circuitry, such as the caudate nucleus, may support these cognitive abilities. However, few studies have examined caudate volumes specifically in children with ASD, or correlated caudate volumes to cognitive ability. METHODS: Neuropsychological test scores and caudate volumes of children with ASD were compared to those of children with bipolar disorder (BD) and of typically developing (TD) children. The relationship between test performance and caudate volumes was analyzed. RESULTS: The ASD group displayed larger right and left caudate volumes, and modest executive deficits, compared to TD controls. While caudate volume inversely predicted performance on the Wisconsin Card Sorting Test in all participants, it differentially predicted performance on measures of attention across the ASD, BD and TD groups. CONCLUSIONS: Larger caudate volumes were related to impaired problem solving. On a test of attention, larger left caudate volumes predicted increased impulsivity and more omission errors in the ASD group as compared to the TD group, however smaller volume predicted poorer discriminant responding as compared to the BD group. 相似文献
93.
94.
95.
Marjorie Shaw Phillips Roger L Williams 《American journal of health-system pharmacy》2006,63(2):139-142
PURPOSE: Recommendations of the interdisciplinary Safe Medication Use Expert Committee of the United States Pharmacopeia (USP) to assist health care professionals, manufacturers, and organizations in handling neuromuscular blocking agents (NMBAs) safely and effectively are discussed. SUMMARY: Review and analysis of the USP Medication Errors Reporting Program and MEDMARX program databases showed a continuing risk of patient harm or death due to errors with NMBAs. Medication errors involving wrong concentrations, wrong doses, wrong drugs, look-alike packaging, and sound-alike names, combined with lack of monitoring and communication, have been associated with the use of NMBAs in health care institutions. Serious adverse events occur when NMBAs are used without adequate safeguards. Recommendations for improving safety were developed through review and discussion of root causes and areas of concern with these medications. CONCLUSION: Medical errors with NMBAs continue to result in patient morbidity and mortality. Increased awareness and action on the part of all parties involved are needed to improve the safety of this class of medications. 相似文献
96.
97.
98.
L Laforest E Van Ganse G Devouassoux S Chretin L Osman G Bauguil Y Pacheco G Chamba 《The European respiratory journal》2006,27(1):42-50
French asthma patients may be supervised by general practitioners (GPs) and/or specialists. Therefore, this study examined asthma management in patients exclusively supervised by specialists (SPE), GPs, (GP) and both (GP+SPE group), and compared the findings. Asthma patients were consecutively recruited in 348 pharmacies. Each patient completed a questionnaire providing data on personal characteristics, asthma management, perception of disease and asthma supervision. Asthma control was measured using the Asthma Control Test. Questionnaires were linked to computerised records of medications which had been dispensed before inclusion in the study. From the 1,256 patients (mean age = 36.1 yrs, 54.3% females), 11.4, 36.6, and 52.0% were placed in the SPE, GP, and GP+SPE groups, respectively. During the previous 4 weeks, most patients in the SPE group were properly controlled (52.2 versus 26.4 and 21.5% in GP and GP+SPE groups, respectively). The SPE group made more use of fixed combinations of long-acting beta agonist and inhaled corticosteroid, while receiving less short-acting beta agonists, antitussives and antibiotics. Striking differences in symptoms and asthma management were observed according to the type of asthma supervision. The current results strongly support the need to improve the management of asthma in primary care, and the coordination of care between general practitioners and specialists. 相似文献
99.
100.