全文获取类型
收费全文 | 645篇 |
免费 | 19篇 |
国内免费 | 2篇 |
专业分类
耳鼻咽喉 | 9篇 |
儿科学 | 31篇 |
妇产科学 | 43篇 |
基础医学 | 42篇 |
口腔科学 | 26篇 |
临床医学 | 77篇 |
内科学 | 131篇 |
皮肤病学 | 16篇 |
神经病学 | 35篇 |
特种医学 | 13篇 |
外科学 | 139篇 |
综合类 | 12篇 |
预防医学 | 26篇 |
眼科学 | 10篇 |
药学 | 40篇 |
肿瘤学 | 16篇 |
出版年
2023年 | 5篇 |
2022年 | 7篇 |
2021年 | 23篇 |
2020年 | 20篇 |
2019年 | 17篇 |
2018年 | 10篇 |
2017年 | 11篇 |
2016年 | 24篇 |
2015年 | 23篇 |
2014年 | 27篇 |
2013年 | 34篇 |
2012年 | 38篇 |
2011年 | 37篇 |
2010年 | 24篇 |
2009年 | 27篇 |
2008年 | 58篇 |
2007年 | 63篇 |
2006年 | 48篇 |
2005年 | 34篇 |
2004年 | 40篇 |
2003年 | 30篇 |
2002年 | 33篇 |
2001年 | 9篇 |
2000年 | 5篇 |
1999年 | 5篇 |
1998年 | 2篇 |
1997年 | 3篇 |
1996年 | 2篇 |
1994年 | 1篇 |
1993年 | 2篇 |
1992年 | 1篇 |
1990年 | 1篇 |
1989年 | 2篇 |
排序方式: 共有666条查询结果,搜索用时 15 毫秒
41.
42.
Sümeyra Nergiz Özlem Sündüz Altınkaya Mert Küçük Hasan Yüksel Selda Demircan Sezer İmran Kurt Ömürlü 《Gynecological endocrinology》2014,30(3):236-240
Objective: The aim of this study is to compare galanin and IL-6 levels in pregnant women with gestational diabetes mellitus (GDM) and normal glucose tolerance (NGT). Also association of insulin resistance markers, galanin and IL-6 was investigated.Materials and Methods: The study registered 30 pregnant women with GDM and 30 pregnant women with NGT. Fasting venous blood samples were collected from all patients. Galanin and IL-6 levels were measured by an enzyme-linked immunosorbent assay.Results: Galanin and IL-6 levels were found higher in pregnant women with GDM (p?0.001). A significant positive correlation was determined between galanin concentrations and glucose (r?=?0.240, p?=?0.065), insulin (r?=?0.681, p?0.001), HbA1c (r?=??0.644, p?0.001), IL-6 (r?=?0.783, p?0.05) and oral glucose challenge test results (r?=?0.745, p?0.001) in pregnant women included in study, whereas no significant association was determined between galanin and gestational age (r?=?0.058, p?=?0.662), body mass index (r?=??0.019, p?=?0.886).Conclusion: Galanin and IL-6 were found to be significantly associated with insulin resistance markers in GDM, thus may play important roles in regulation of glucose hemostasis. 相似文献
43.
Selim Doganay I Fevzi Hepsen Saim Yologlu Hakan Demirtas 《Ophthalmic surgery, lasers & imaging》2007,38(6):457-461
BACKGROUND AND OBJECTIVE: To investigate the role of the preservation-to-surgery interval on corneal allograft survival in low-risk patients. PATIENTS AND METHODS: Eighteen donor corneas obtained from an overseas eye bank were preserved and transported overseas in Optisol-GS solution (Chiron Vision, Irvine, CA) in Group 1. Thirty fresh, young, healthy, and unscreened donor corneas soaked in the same medium were used in Group 2. Average preservation-to-surgery time was more than 8 days in Group 1 and less than 30 hours in Group 2. Corneal allograft survival rates were determined by Kaplan-Meier estimates of the survivor functions. The log-rank test was used to determine statistical significance of the differences between groups. was 233.3 +/- 37.7 hours in Group 1 and 20.8 +/- 4.6 hours in Group 2 (P < .05 for the comparison of average times). There were significant differences between the groups with respect to donors' age and enucleation time, but there were no statistically significant differences between the groups in terms of graft diameter and recipient diameter or for corneal allograft survival in low-risk patients. The graft survival rate was 83.3% in Group 1 and 93.3% in Group 2 at the end of the follow-up period. CONCLUSIONS: Preservation-to-surgery time has no effect on corneal allograft survival in low-risk patients. However, prospective, randomized, long-term and large-scale clinical trials are necessary to confirm these findings. 相似文献
44.
Tez S Dilmen G Unsal A Koktener A Cimentepe E Saglam R 《International urology and nephrology》2002,34(3):311-313
We report an unusual case of psoas abscess,which developed twenty-one years afteripsilateral nephrectomy and was caused byinfrequent pathogen, Proteus mirabilis.It was diagnosed by computed tomography andwas drained percutaneously with a nephrostomytube guided by ultrasonography. 相似文献
45.
46.
47.
48.
49.
Hyzel Selda Sanli Cihat Albayrak Meryem Fidan Serdar Agar Ayca 《生殖与避孕(英文版)》2006,17(4):315-326
Adolescence is a physical phenomenon and, as such, must be recognized as an inevi- table step going to be an adult. The second decade of life is a period of personal development almost as rapid as the first[1]. Adolescents are a very special group as with… 相似文献
50.
Tuncel A Uzun B Eruyar T Karabulut E Seckin S Atan A 《European urology》2005,48(2):277-83; discussion 283-4
OBJECTIVE: To investigate whether there is a role of prostatic infarction, prostatic inflammation and prostate morphology in acute urinary retention (AUR) etiology. METHODS: Ninety-eight consecutive male patients who were admitted to our clinic with either AUR or lower urinary tract symptoms (LUTS) were involved in the study. Patient age ranged from 43 to 88 years (median age 70). Group 1 consisted of 53 (54%) patients with AUR, and Group 2 consisted of 45 (46%) patients with LUTS. In Group 1 and Group 2, 58.4% (n:31) and 62.2% (n:28) of the patients underwent transurethral prostate resection, 41.6% (n:22) and 37.8% (n:17) of the patients underwent suprapubic transvesical prostatectomy, respectively. Each patient was asked about the factors: smoking habits, taking previous general anesthesia and preexisting cardiovascular disease such as hypertention and atherosclerotic coronary vascular disease which may lead to AUR via prostatic infarct. Prostatic infarction, prostatic inflammation and prostatic morphology were examined in the patients' specimen. RESULTS: Mean age, median serum prostate-specific antigen (PSA) level, and prostatic inflammation ratio were significantly higher in Group 1. There were not significant differences between the groups regarding prostate volume, prostatic infarction ratio and a type of prostatic morphology. In the present study, except for taking previous general anesthesia and preexisting cardiovascular disease, only prostatic inflammation was found important contributory factor on AUR. AUR risk was 3.03 times higher in the patients with prostatic inflammation (95%CI 1.28-7.15) (p = 0.01). CONCLUSIONS: No significant effect of prostatic infarction was found on occurrence of AUR which was more frequent in elderly patients. Prostatic inflammation may have an important risk factor in AUR etiology. Additionally, serum PSA levels were higher in AUR group. No association was found between a type of prostatic morphology and AUR. 相似文献