全文获取类型
收费全文 | 55825篇 |
免费 | 4924篇 |
国内免费 | 158篇 |
专业分类
耳鼻咽喉 | 497篇 |
儿科学 | 2046篇 |
妇产科学 | 1603篇 |
基础医学 | 7574篇 |
口腔科学 | 796篇 |
临床医学 | 7657篇 |
内科学 | 10818篇 |
皮肤病学 | 1041篇 |
神经病学 | 5943篇 |
特种医学 | 1146篇 |
外国民族医学 | 8篇 |
外科学 | 5260篇 |
综合类 | 517篇 |
一般理论 | 50篇 |
预防医学 | 6779篇 |
眼科学 | 791篇 |
药学 | 3744篇 |
中国医学 | 42篇 |
肿瘤学 | 4595篇 |
出版年
2023年 | 486篇 |
2022年 | 373篇 |
2021年 | 1826篇 |
2020年 | 1268篇 |
2019年 | 1936篇 |
2018年 | 2146篇 |
2017年 | 1603篇 |
2016年 | 1801篇 |
2015年 | 1878篇 |
2014年 | 2384篇 |
2013年 | 3301篇 |
2012年 | 4553篇 |
2011年 | 4669篇 |
2010年 | 2639篇 |
2009年 | 2284篇 |
2008年 | 3861篇 |
2007年 | 3846篇 |
2006年 | 3530篇 |
2005年 | 3314篇 |
2004年 | 3025篇 |
2003年 | 2639篇 |
2002年 | 2584篇 |
2001年 | 415篇 |
2000年 | 362篇 |
1999年 | 414篇 |
1998年 | 542篇 |
1997年 | 420篇 |
1996年 | 242篇 |
1995年 | 317篇 |
1994年 | 254篇 |
1993年 | 208篇 |
1992年 | 148篇 |
1991年 | 135篇 |
1990年 | 133篇 |
1989年 | 109篇 |
1988年 | 99篇 |
1987年 | 78篇 |
1986年 | 94篇 |
1985年 | 72篇 |
1984年 | 78篇 |
1983年 | 88篇 |
1982年 | 92篇 |
1981年 | 85篇 |
1980年 | 52篇 |
1979年 | 31篇 |
1978年 | 38篇 |
1977年 | 42篇 |
1976年 | 53篇 |
1975年 | 37篇 |
1974年 | 41篇 |
排序方式: 共有10000条查询结果,搜索用时 93 毫秒
61.
62.
63.
64.
65.
Katherine Berry Richard Drake Catherine Stewart Lisa Marie Aitkin Jane Byrne Christine Barrowclough Nitin Purandare 《The American journal of geriatric psychiatry》2007,15(9):800-806
OBJECTIVE: To investigate whether orofacial tardive dyskinesia (OTD) is associated with frontal lobe dysfunction and whether either are related to the coping abilities independent of psychiatric symptoms in older people with psychotic disorders. METHODS: A total of 52 patients, aged over 65 years or over, who satisfied International Classification of Diseases, Tenth Revision criteria for psychotic disorders (F20-F29) were recruited into the study. OTD was measured using the Abnormal Involuntary Movements Scale and Waddington et al.'s (1993) criteria. Neuropsychological measures were specifically selected to assess different aspects of frontal function and coping was measured using a semistructured interview. Psychiatric symptoms were assessed using the Positive and Negative Syndrome Scale (PANSS). RESULTS: Patients with OTD showed more severe global cognitive impairment compared to patients without OTD. Group differences on measures of frontal lobe dysfunction were not maintained following adjustment for global cognitive impairment. Patients with OTD did not differ from patients without OTD on coping measures. Scores on the general psychopathology subscale of the PANSS, which includes symptoms associated with depression and anxiety, consistently predicted patients' negative perceptions of stressors and appraisals of coping, but cognitive impairment did not predict coping independent of symptoms. CONCLUSION: The association between coping and general psychopathology in older patients with psychosis warrants further investigation as both variables may be amenable to psychological interventions. 相似文献
66.
67.
68.
Augmentation technique with semitendinosus and gracilis tendons in chronic partial lesions of the ACL: clinical and arthrometric analysis 总被引:1,自引:0,他引:1
Roberto Buda Alberto Ferruzzi Francesca Vannini Lisa Zambelli Francesco Di Caprio 《Knee surgery, sports traumatology, arthroscopy》2006,14(11):1101-1107
Most of the techniques described in the literature for the repair of chronic partial ACL tears, don’t spare the intact portion of the ligament. The aim of this study was to perform a prospective analysis of the results of augmentation surgery using gracilis and semitendinosus tendons to treat partial sub-acute lesions of the ACL. This technique involves an “over the top” femoral passage, which enables salvage and strengthening of the intact portion of the ACL. The study included 47 patients treated consecutively at our institute from 1993 to 1998, with a mean injury-surgery interval of 18 weeks (range 12–36). The patients were followed up by clinical and instrumental assessment criteria at 3 months, 1 and 5 years after surgery. Clinical assessment was performed using the IKDC form. Subjective and functional parameters were assessed by the Tegner activity scale. Instrumental evaluation was done using the KT-2000 instrument: the 30-pound passive test and the manual maximum displacement test were performed. We obtained good or excellent results in 95.7% of cases. No recurrences in ligamentous laxity were observed. We believe that the described technique has the advantage of being compatible with ACL anatomy, and enables very rapid functional recovery. 相似文献
69.
70.
Seena Fazel Johanna Philipson Lisa Gardiner Rowena Merritt Martin Grann 《Journal of neurology》2009,256(10):1591-1602
The objectives of this study were to systematically review and meta-analyze the research literature on the association of common neurological disorders and violence. Keywords relating to neurological disorders and violence were searched between 1966 and August 2008. Case–control and cohort studies were selected. Odds ratios of violence risk in particular disorders compared with controls were combined using fixed-effects meta-analysis with the data presented in forest plots. Sensitivity analyses were conducted to identify possible differences in risk estimates across surveys. Information on risk factors for violence was extracted if replicated in more than one study. Nine studies were identified that compared the risk of violence in epilepsy or traumatic brain injury compared with unaffected controls. For the epilepsy studies, the overall pooled odds ratio for violent outcomes was 0.67 [95% confidence interval (CI) 0.46–0.96]. For traumatic brain injury, the odds ratio was 1.66 (95% CI 1.12–2.31). An additional 11 case–control studies investigated factors associated with violence in epilepsy and traumatic brain injury. It was not possible to meta-analyze these data. Comorbid psychopathology was associated with violence. Data on other neurological conditions was limited and unreplicated. In conclusion, although the evidence was limited and methodological quality varied, epilepsy and traumatic brain injury appeared to differ in their risk of violence compared with control populations. Longitudinal studies are required to replicate this review’s provisional findings that epilepsy is inversely associated with violence and that brain injury modestly increases the risk, and further research is needed to provide information on a broader range of risk factors. 相似文献