全文获取类型
收费全文 | 6010篇 |
免费 | 260篇 |
国内免费 | 102篇 |
专业分类
耳鼻咽喉 | 63篇 |
儿科学 | 71篇 |
妇产科学 | 172篇 |
基础医学 | 442篇 |
口腔科学 | 198篇 |
临床医学 | 441篇 |
内科学 | 1998篇 |
皮肤病学 | 84篇 |
神经病学 | 401篇 |
特种医学 | 219篇 |
外科学 | 1302篇 |
综合类 | 27篇 |
现状与发展 | 1篇 |
一般理论 | 2篇 |
预防医学 | 220篇 |
眼科学 | 131篇 |
药学 | 238篇 |
中国医学 | 3篇 |
肿瘤学 | 359篇 |
出版年
2024年 | 6篇 |
2023年 | 70篇 |
2022年 | 150篇 |
2021年 | 276篇 |
2020年 | 163篇 |
2019年 | 218篇 |
2018年 | 263篇 |
2017年 | 155篇 |
2016年 | 191篇 |
2015年 | 178篇 |
2014年 | 293篇 |
2013年 | 337篇 |
2012年 | 509篇 |
2011年 | 547篇 |
2010年 | 350篇 |
2009年 | 311篇 |
2008年 | 442篇 |
2007年 | 465篇 |
2006年 | 427篇 |
2005年 | 310篇 |
2004年 | 258篇 |
2003年 | 179篇 |
2002年 | 143篇 |
2001年 | 31篇 |
2000年 | 7篇 |
1999年 | 12篇 |
1998年 | 25篇 |
1997年 | 13篇 |
1996年 | 8篇 |
1995年 | 7篇 |
1994年 | 14篇 |
1993年 | 2篇 |
1992年 | 3篇 |
1991年 | 1篇 |
1990年 | 1篇 |
1989年 | 1篇 |
1984年 | 2篇 |
1979年 | 1篇 |
1975年 | 2篇 |
1969年 | 1篇 |
排序方式: 共有6372条查询结果,搜索用时 15 毫秒
21.
22.
23.
Konstantinos I. Gourcoulianis Poletta Tsoutsou Natasa Fotiadou Konstantinos Samaras Diuitrios Dakis Paschalis A. Molyvdas 《Archives of environmental & occupational health》2013,68(6):453-454
The relationship between lung function and smoking and dietary habits was examined in 121 Gypsies (62 males, 59 females) who were 14-70 y of age and who lived in Greece. All were examined clinically, after which they all participated in spirometry tests. Half of the study group had abnormal (< 80% of predicted) forced vital capacity, 36.4% had abnormal (< 80% of predicted) forced expiratory volume in 1 sec, and 5% had serious lung function disturbances (forced vital capacity < 50% of predicted). Approximately 70% of subjects were smokers, and their diets were rich in alcohol and meat; they ate very few salads and oranges. Consequently, decreased lung function might be a major health problem in Gypsies in Greece. Organization of preventive health strategies should improve the overall health of this study group. 相似文献
24.
25.
Petros Ypsilantis Maria Lambropoulou Ioannis Tentes Konstantinos Anagnostopoulos Christina Tsigalou Nikolaos Papadopoulos Alexandros Kortsaris Constantinos Simopoulos 《Journal of gastroenterology and hepatology》2009,24(4):623-632
Background and Aim: We investigated the role of the prophylactic administration of the antioxidant 2‐mercaptoethane sulfonate (mesna) on the hepatocyte‐regenerating capacity following partial hepatectomy (PH) with concurrent Pringle maneuver. Methods: Wistar rats were subjected to PH (70% hepatectomy), 30 min Pringle maneuver, PH plus Pringle with or without mesna pretreatment (400 mg/kg, per os, 3 h before Pringle), or sham operation. At 24 h, 48 h, 72 h, and 1 week after operation, relative liver weight, hepatocyte mitotic activity (mitotic index), the histopathological score and serum aspartate aminotransferase, and alanine aminotransferase concentrations were assessed. At 1 h after operation, oxidative stress markers (glutathione to glutathione disulfide ratio, malondialdehyde concentration, and superoxide dismutase activity) and nuclear factor‐κB (NF‐κB) activity were assessed. Results: Hepatectomy stimulated the regenerating process and induced mild oxidative stress and the activation of NF‐κB in hepatocytes, while causing tissue injury in the remnant liver. When PH was performed under Pringle maneuver, hepatocyte mitotic activity was substantially suppressed, although Pringle alone initiated a delayed regenerating response. Furthermore, Pringle maneuver deteriorated oxidative stress markers, markedly increased NF‐κB activity, and aggravated tissue injury, as compared to hepatectomy alone. Mesna pretreatment prevented the Pringle‐induced antimitotic effect and the induction of oxidative stress, inhibited the activation of NF‐κB, while attenuating liver injury after PH under Pringle. Conclusion: The excessive activation of NF‐κB is related to the suppression of hepatocyte‐regenerating activity following PH with concurrent liver ischemia. Mesna pretreatment protects the liver against the Pringle‐induced antimitotic effect after PH via the prevention of oxidative stress and the inhibition of NF‐κB activation. 相似文献
26.
27.
Masateru Takigawa Jatin Relan Ruairidh Martin Steven Kim Takeshi Kitamura Antonio Frontera Ghassen Cheniti Konstantinos Vlachos Grégoire Massoullié Claire A. Martin Nathaniel Thompson Michael Wolf Felix Bourier Anna Lam Josselin Duchateau Nicolas Klotz Thomas Pambrun Arnaud Denis Pierre Jaïs 《Heart rhythm》2018,15(12):1853-1861
28.
Christoph Josef Spindelegger Konstantinos Papageorgiou Renate Grohmann Rolf Engel Waldemar Greil Anastasios Konstantinidis Marcus Willy Agelink Stefan Bleich Eckart Ruether Sermin Toto Siegfried Kasper 《The international journal of neuropsychopharmacology / official scientific journal of the Collegium Internationale Neuropsychopharmacologicum (CINP)》2015,18(4)
29.
30.