全文获取类型
收费全文 | 937328篇 |
免费 | 59289篇 |
国内免费 | 2359篇 |
专业分类
耳鼻咽喉 | 12970篇 |
儿科学 | 29623篇 |
妇产科学 | 26789篇 |
基础医学 | 130969篇 |
口腔科学 | 25395篇 |
临床医学 | 78054篇 |
内科学 | 189539篇 |
皮肤病学 | 19964篇 |
神经病学 | 74716篇 |
特种医学 | 37626篇 |
外国民族医学 | 338篇 |
外科学 | 146634篇 |
综合类 | 19259篇 |
一般理论 | 261篇 |
预防医学 | 67173篇 |
眼科学 | 20524篇 |
药学 | 66039篇 |
15篇 | |
中国医学 | 1841篇 |
肿瘤学 | 51247篇 |
出版年
2018年 | 9964篇 |
2017年 | 7908篇 |
2016年 | 8508篇 |
2015年 | 9528篇 |
2014年 | 13165篇 |
2013年 | 20605篇 |
2012年 | 27784篇 |
2011年 | 29552篇 |
2010年 | 17634篇 |
2009年 | 16588篇 |
2008年 | 28000篇 |
2007年 | 29798篇 |
2006年 | 29777篇 |
2005年 | 29190篇 |
2004年 | 27943篇 |
2003年 | 27037篇 |
2002年 | 26553篇 |
2001年 | 42128篇 |
2000年 | 43371篇 |
1999年 | 36895篇 |
1998年 | 10174篇 |
1997年 | 9303篇 |
1996年 | 9213篇 |
1995年 | 8601篇 |
1994年 | 8235篇 |
1993年 | 7698篇 |
1992年 | 28453篇 |
1991年 | 27249篇 |
1990年 | 26637篇 |
1989年 | 25573篇 |
1988年 | 23759篇 |
1987年 | 23388篇 |
1986年 | 22441篇 |
1985年 | 21370篇 |
1984年 | 15976篇 |
1983年 | 13638篇 |
1982年 | 8219篇 |
1981年 | 7177篇 |
1979年 | 14728篇 |
1978年 | 10314篇 |
1977年 | 8724篇 |
1976年 | 8229篇 |
1975年 | 9071篇 |
1974年 | 10807篇 |
1973年 | 10290篇 |
1972年 | 9764篇 |
1971年 | 9013篇 |
1970年 | 8660篇 |
1969年 | 8102篇 |
1968年 | 7772篇 |
排序方式: 共有10000条查询结果,搜索用时 62 毫秒
1.
2.
3.
4.
5.
M. Iachina P.M. Ljungdalh R.G. Sørensen L. Kaerlev J. Blaakær O. Trosko N. Qvist B.M. Nørgård 《Clinical oncology (Royal College of Radiologists (Great Britain))》2019,31(2):115-123
Aims
To examine the influence of pre-existing psychiatric disorder on the choice of treatment in patients with gynaecological cancer.Materials and methods
The analyses were based on all patients who underwent surgical treatment for endometrial, ovarian or cervical cancer who were registered in the Danish Gynecological Cancer Database in the years 2007–2014 (3059 patients with ovarian cancer, 5100 patients with endometrial cancer and 1150 with cervical cancer). Logistic regression model and Cox regression model, adjusted for relevant confounders, were used to estimate the effect of pre-existing psychiatric disorder on the course of cancer treatment. Our outcomes were (i) presurgical oncological treatment, (ii) macroradical surgery for patients with ovarian cancer, (iii) radiation/chemotherapy within 30 days and 100 days after surgery and (iv) time from surgery to first oncological treatment.Results
In the group of patients with ovarian cancer, more patients with a psychiatric disorder received macroradical surgery versus patients without a psychiatric disorder, corresponding to an adjusted odds ratio of 1.24 (95% confidence interval 0.62–2.41) and the chance for having oncological treatment within 100 days was odds ratio = 1.26 (95% confidence interval 0.77–2.10). As for patients with endometrial cancer, all outcome estimates were close to unity. The adjusted odds ratio for oncological treatment within 30 days after surgery in patients with cervical cancer with a history of psychiatric disorder was 0.20 (95% confidence interval 0.03–1.54).Conclusions
We did not find any significant differences in the treatment of ovarian and endometrial cancer in patients with pre-existing psychiatric diagnoses. When it comes to oncological treatment, we suggest that increased attention should be paid to patients with cervical cancer having a pre-existing psychiatric diagnosis. 相似文献6.
7.
According to the current nutritional recommendations issued by professional diabetes and nutrition associations, diabetic patients should keep to a diet consisting of 45–60% carbohydrates, 10–20% protein, and not more than 35% fat. However, not all of these nutritional recommendations are evidence based. For example, current studies show that the intake of insoluble roughage may be underrepresented. It is also possible that diabetic patients could benefit from keeping to the lower end of the recommended range for carbohydrates (45%) and the upper end of the range advised for protein (20%). 相似文献
8.
9.
A I D'hulst K R Bracke T Maes J L De Bleecker R A Pauwels G F Joos G G Brusselle 《The European respiratory journal》2006,28(1):102-112
Chronic obstructive pulmonary disease (COPD) is characterised by a local pulmonary inflammatory response to respiratory pollutants and by systemic inflammation. Tumour necrosis factor (TNF)-alpha has been implicated in systemic effects of COPD and operates by binding the p55 (R1) and p75 (R2) TNF-alpha receptors. To investigate the contribution of each TNF-alpha receptor in the pathogenesis of COPD, the present study examined the effects of chronic air or cigarette smoke (CS) exposure in TNF-alpha R1 knockout (KO) mice, TNF-alpha R2 KO mice and wild type (WT) mice. CS was found to significantly increase the protein levels of soluble TNF-alpha R1 (by four-fold) and TNF-alpha R2 (by 10-fold) in the bronchoalveolar lavage of WT mice. After 3 months, CS induced a prominent pulmonary inflammatory cell influx in WT and TNF-alpha R1 KO mice. In TNF-alpha R2 KO mice, CS-induced pulmonary inflammation was clearly attenuated. After 6 months, no emphysema was observed in CS-exposed TNF-alpha R2 KO mice in contrast to WT and TNF-alpha R1 KO mice. CS-exposed WT and TNF-alpha R1 KO mice failed to gain weight, whereas the body mass of TNF-alpha R2 KO mice was not affected. These current findings suggest that both tumour necrosis factor-alpha receptors contribute to the pathogenesis of chronic obstructive pulmonary disease, but tumour necrosis factor-alpha receptor-2 is the most active receptor in the development of inflammation, emphysema and systemic weight loss in this murine model of chronic obstructive pulmonary disease. 相似文献
10.