全文获取类型
收费全文 | 28429篇 |
免费 | 2556篇 |
国内免费 | 49篇 |
专业分类
耳鼻咽喉 | 300篇 |
儿科学 | 1115篇 |
妇产科学 | 588篇 |
基础医学 | 3621篇 |
口腔科学 | 434篇 |
临床医学 | 3529篇 |
内科学 | 4827篇 |
皮肤病学 | 505篇 |
神经病学 | 2806篇 |
特种医学 | 854篇 |
外国民族医学 | 1篇 |
外科学 | 4007篇 |
综合类 | 633篇 |
一般理论 | 23篇 |
预防医学 | 3444篇 |
眼科学 | 436篇 |
药学 | 2101篇 |
中国医学 | 44篇 |
肿瘤学 | 1766篇 |
出版年
2023年 | 235篇 |
2022年 | 336篇 |
2021年 | 789篇 |
2020年 | 434篇 |
2019年 | 754篇 |
2018年 | 885篇 |
2017年 | 618篇 |
2016年 | 603篇 |
2015年 | 685篇 |
2014年 | 939篇 |
2013年 | 1336篇 |
2012年 | 1897篇 |
2011年 | 1951篇 |
2010年 | 1085篇 |
2009年 | 955篇 |
2008年 | 1527篇 |
2007年 | 1525篇 |
2006年 | 1468篇 |
2005年 | 1442篇 |
2004年 | 1293篇 |
2003年 | 1231篇 |
2002年 | 1183篇 |
2001年 | 650篇 |
2000年 | 574篇 |
1999年 | 496篇 |
1998年 | 261篇 |
1997年 | 223篇 |
1996年 | 261篇 |
1995年 | 196篇 |
1994年 | 196篇 |
1993年 | 165篇 |
1992年 | 363篇 |
1991年 | 351篇 |
1990年 | 371篇 |
1989年 | 335篇 |
1988年 | 270篇 |
1987年 | 291篇 |
1986年 | 228篇 |
1985年 | 251篇 |
1984年 | 209篇 |
1983年 | 161篇 |
1982年 | 140篇 |
1981年 | 115篇 |
1980年 | 124篇 |
1979年 | 171篇 |
1978年 | 144篇 |
1977年 | 111篇 |
1976年 | 109篇 |
1974年 | 128篇 |
1973年 | 110篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
71.
72.
Proper timing of surgery for gallstone pancreatitis 总被引:23,自引:0,他引:23
73.
Anita E. Kelly Matthew E. Coenen Benjamin L. Johnston 《Journal of traumatic stress》1995,8(1):161-169
One hundred six undergraduate (83 women and 23 men) completed surveys concerning their most traumatic life event, the feedback they received following their disclosure of the event to others, and how they felt after the disclosure. Results indicated that the better they felt after disclosure, the less disturbed they were by thoughts of the event at the time of the study. In addition, the more personal the trauma was, the worse they felt after their disclosure, and the more disturbed they were about the trauma. However, no significant relation existed between the positivity (e.g., supportiveness) of their confidant's feedback and their present degree of disturbance. Implications for understanding the complex relation between confiding traumatic events and resolving feelings surrounding those events were discussed. 相似文献
74.
M Fava J F Rosenbaum R Birnbaum K Kelly M W Otto R MacLaughlin 《Acta psychiatrica Scandinavica》1992,86(1):42-45
We evaluated the predictive value of the thyrotropin (TSH) response to thyrotropin-releasing hormone (TRH) in 32 depressed outpatients completing a double-blind placebo-controlled trial of s-adenosyl-l-methionine (SAMe), which failed to show any significant difference between SAMe and placebo. Treatment response was defined as the change in Hamilton Rating Scale for Depression (HRSD-24) score between baseline and the end of the six-week trial. Subjects with TSH response outside the normal range (7-25 uU/ml) had a significantly greater response than patients with a normal response. There was also a significant correlation between absolute deviations from the mean TSH response (16 uU/ml) and changes in HRSD-24 scores. 相似文献
75.
76.
77.
Hyperkalaemia, cardiac arrest, suxamethonium and intensive care 总被引:4,自引:0,他引:4
78.
Guy J Petruzzelli Kelly Cunningham Darl Vandevender 《Otolaryngology--head and neck surgery》2007,137(5):717-721
OBJECTIVE: To determine the role of native condyle preservation in local recurrence after segmental mandibulectomy in patients with head and neck squamous cell carcinoma. METHODS: Retrospective chart review with main outcome measuring local control of cancer. RESULTS: Between 1994 and 2003, 72 patients (48 men, 24 women) with an average age of 73.5 years without previous treatment underwent segmental mandibulectomy. Fifty-four cases (n = 54) involved the mandible posterior to the mental foramen and are the subject of this review. In 36 patients, the condyle was preserved and mandibular continuity was restored. In 18 patients, condyle and ramus were resected without mandibular reconstruction. Reconstructive modalities included primary closure (3), split-thickness skin graft (3), pedicle flap (19), and free tissue reconstructions (29). Overall local-regional recurrence rate was 22 percent (12 of 54); no recurrences were identified in patients who underwent condylar resection. Recurrences were observed in patients with mandibular reconstruction by both plate and pedicle flap (5 of 9) or (osteo) myocutaneous free flap (7 of 27). CONCLUSION: Condylar preservation may predispose patients to local recurrence after segmental mandibulectomy. This does not translate into overall reduction in survival. 相似文献
79.
Charles Kelly Vinidh Paleri Carole Downs Raina Shah 《Otolaryngology--head and neck surgery》2007,136(1):108-111
OBJECTIVE: The aim of this study was to assess the quality of life and psychologic profile during radiation therapy for head and neck cancer. STUDY DESIGN AND SETTING: The University of Washington QoL instrument and the Hospital Anxiety and Depression Scale were administered to 202 patients at two or three time points during radiation therapy. RESULTS: A total of 118 (54.6%) patients completed the questionnaires at the beginning and at the end of the study. A mid-treatment dataset was also available for 67 (31.0%) patients. There was a statistically significant deterioration in composite QoL scores (P < 0.000) and a statistically significant increase in depression (P < 0.000). There was no difference in anxiety levels (P = 0.276). CONCLUSION: Patients undergoing radiation are increasingly depressed as treatment progresses, with worsening QoL during the treatment. SIGNIFICANCE: This study underlines the need for good psychologic support during radiation therapy in head and neck cancer. 相似文献
80.
P. Satz K. Zaucha D. L. Forney C. McCleary R. F. Asarnow R. Light H. Levin D. Kelly M. Bergsneider D. Hovda N. Martin M. J. Caron N. Namerow D. Becker 《Brain injury : [BI]》1998,12(7):555-567
Traumatic brain injury (TBI) subjects at Glasgow Outcome Scale levels 3 (severe disability), 4 (moderate disability), 5 (good recovery), and an other injury control group (OIC) were compared in terms of neuropsychological, psychosocial, and vocational functioning 6 months after injury. Subjects were a sample of 100 patients with a moderate to severe traumatic brain injury (TBI) and a matched sample of 30 other injury control subjects (OIC) enrolled in the UCLA Brain Injury Research Center study of TBI outcome. Overall, the results showed a systematic decrease in mean neuropsychological test performance as a function of increasing GOS severity, as well as an increased prevalence of symptoms of depression and lower ratings on measures assessing employability and capacity for self care. TBI patients in the 'severe' and 'moderate disability' groups were distinctly inferior to the 'good recovery' and 'OIC' groups, who were quite similar to each other in terms of cognitive, psychosocial, and vocational outcomes. The results demonstrate overall support for the predictive and concurrent validity of the GOS 6 months post injury. Despite these results, which strengthen the utility and appeal of the GOS for multicentre studies, concerns still remain regarding GOS category 4 (moderate disability), which was shown to lack sufficient discriminability in this study. 相似文献