全文获取类型
收费全文 | 3993篇 |
免费 | 220篇 |
国内免费 | 45篇 |
专业分类
耳鼻咽喉 | 76篇 |
儿科学 | 45篇 |
妇产科学 | 21篇 |
基础医学 | 517篇 |
口腔科学 | 182篇 |
临床医学 | 298篇 |
内科学 | 1443篇 |
皮肤病学 | 80篇 |
神经病学 | 173篇 |
特种医学 | 83篇 |
外科学 | 644篇 |
综合类 | 14篇 |
预防医学 | 89篇 |
眼科学 | 87篇 |
药学 | 184篇 |
中国医学 | 14篇 |
肿瘤学 | 308篇 |
出版年
2023年 | 16篇 |
2022年 | 47篇 |
2021年 | 82篇 |
2020年 | 53篇 |
2019年 | 58篇 |
2018年 | 69篇 |
2017年 | 51篇 |
2016年 | 91篇 |
2015年 | 77篇 |
2014年 | 89篇 |
2013年 | 119篇 |
2012年 | 244篇 |
2011年 | 236篇 |
2010年 | 147篇 |
2009年 | 108篇 |
2008年 | 192篇 |
2007年 | 250篇 |
2006年 | 236篇 |
2005年 | 224篇 |
2004年 | 244篇 |
2003年 | 193篇 |
2002年 | 179篇 |
2001年 | 113篇 |
2000年 | 93篇 |
1999年 | 89篇 |
1998年 | 53篇 |
1997年 | 43篇 |
1996年 | 26篇 |
1995年 | 18篇 |
1993年 | 15篇 |
1992年 | 59篇 |
1991年 | 54篇 |
1990年 | 50篇 |
1989年 | 66篇 |
1988年 | 63篇 |
1987年 | 47篇 |
1986年 | 66篇 |
1985年 | 54篇 |
1984年 | 52篇 |
1983年 | 34篇 |
1982年 | 17篇 |
1981年 | 15篇 |
1979年 | 27篇 |
1977年 | 16篇 |
1974年 | 14篇 |
1972年 | 20篇 |
1970年 | 19篇 |
1969年 | 21篇 |
1968年 | 17篇 |
1967年 | 13篇 |
排序方式: 共有4258条查询结果,搜索用时 15 毫秒
121.
Ito K Fujita N Noda Y Kobayashi G Obana T Horaguchi J Koshita S Kanno Y Ogawa T Kato Y Yamashita Y 《Digestive endoscopy》2012,24(1):30-35
Aim: To evaluate the usefulness of a modified technique of endoscopic papillectomy (EP) for lessening the occurrence of complications. Methods: Indications for EP were adenoma or well‐differentiated adenocarcinoma confined to the papilla of Vater (T1) without tumor spread into the bile/pancreatic duct. Sixteen patients underwent the modified technique, which consists of resection with the Endocut® mode, followed by biliary/pancreatic sphincterotomy and stenting (Group A). Twelve patients who had undergone EP, using a cutting current, followed by pancreatic duct stenting were included as control (Group B). The frequency of complications and clinical outcomes were retrospectively compared between the two groups. Results: Sixteen patients had adenoma, and 12 had adenocarcinoma. Early complications occurred in 36% of all patients (hemorrhage, 7; cholangitis, 3; perforation, 2; cholecystitis, 1). The frequency of early complications in Group A was significantly lower than that in Group B (6% vs 75%, odds ratio [OR] 0.022, 95% confidence interval [CI], 0.0020–0.25). Late complications occurred in 18% of the patients (bile duct stone, 3; hemorrhage, 1; pancreatitis, 1). There was no significant difference in the late complication rate between Group A and Group B (19% vs 17%). Local recurrences were found in 14% of the patients, without a significant difference between Group A and Group B (19% vs 8%) during a mean follow‐up period. All recurrent tumors were successfully treated with argon plasma coagulation. Conclusions: The modified technique of EP for ampullary neoplasm contributed to lessening the occurrence of early complications. However, further refinement of this technique is necessary for improving the clinical outcome. 相似文献
122.
123.
124.
125.
Ayako Edahiro Hirohiko Hirano Ritsuko Yamada Yumi Chiba Yutaka Watanabe Morio Tonogi Gen‐yuki Yamane 《Geriatrics & Gerontology International》2012,12(3):481-490
Aim: In elderly patients with dementia, disturbed eating behavior is understood to be a core symptom or a behavioral and psychological symptom of dementia (BPSD). The purpose of the present study was to investigate the factors affecting self‐feeding in elderly patients with Alzheimer's disease (AD). Methods: A total of 150 AD patients who were hospitalized in dementia wards, or were residents of institutions or group homes were enrolled. The patients underwent an eating behavior examination, cognitive assessment, neurological examination and vital function tests. The eating behavior examination consisted of observation of the patients at mealtime. Items assessing eating behavior included the number of feeding cycles, stopping of eating or agitation and dysfunction. Results: Logistic regression analysis carried out to identify factors with a significant effect on decreased independence in eating were difficulty in beginning a meal (OR = 14.498, CI = 2.067–101.690), presence of dysphagia signs (OR = 5.214, CI = 1.031–26.377) and the severity of dementia (OR = 4.538, CI = 1.154–17.843). Conclusion: The present study is the first to generate objective data showing that difficulty in beginning a meal is a factor that hinders independence in eating in AD, in addition to the presence of dysphagia signs and the severity of dementia. Assisting AD patients in maintaining eating independence might be effectively achieved by eliminating environmental factors that interfere with beginning a meal, and by providing assistance that will promote beginning a meal. The present results show the necessity of developing effective methods for assisting elderly patients with AD. Geriatr Gerontol Int 2012; 12: 481–490. 相似文献
126.
127.
128.
Ikawa H Takeyasu Y Ukichi K Watanabe S Takada A Tonogi M Yamane GY Katakura A 《The Bulletin of Tokyo Dental College》2012,53(2):83-90
Two patients requiring surgical management for leakage of calcium hydroxide paste from a root canal into the infraorbital space are reported. A paste root canal treatment material used at the time of maxillary root canal treatment had leaked out of the root canal in both patients. Computed tomography confirmed displacement of the root canal treatment material into the soft tissue, with extension into the infraorbital space. In both cases, foreign body removal was performed. Root canal treatment using a calcium hydroxide paste should be performed carefully without strong pressure. 相似文献
129.
Toshihisa Takeuchi Takahisa Furuta Yasuhiro Fujiwara Mitsushige Sugimoto Kunio Kasugai Motoyasu Kusano Hiroyuki Okada Takahiro Suzuki Tomohiro Higuchi Takuma Kagami Takahiro Uotani Mihoko Yamade Akinari Sawada Fumio Tanaka Satoshi Harada Kazuhiro Ota Yuichi Kojima Masaki Murata Yasuhiro Tamura Yasushi Funaki Osamu Kawamura Yuki Okamoto Kazuma Fujimoto Kazuhide Higuchi 《Alimentary pharmacology & therapeutics》2020,51(5):534-543
130.