全文获取类型
收费全文 | 5927篇 |
免费 | 309篇 |
国内免费 | 31篇 |
专业分类
耳鼻咽喉 | 64篇 |
儿科学 | 185篇 |
妇产科学 | 93篇 |
基础医学 | 790篇 |
口腔科学 | 185篇 |
临床医学 | 420篇 |
内科学 | 1395篇 |
皮肤病学 | 250篇 |
神经病学 | 376篇 |
特种医学 | 283篇 |
外科学 | 570篇 |
综合类 | 37篇 |
预防医学 | 279篇 |
眼科学 | 142篇 |
药学 | 467篇 |
中国医学 | 18篇 |
肿瘤学 | 713篇 |
出版年
2023年 | 59篇 |
2022年 | 107篇 |
2021年 | 161篇 |
2020年 | 89篇 |
2019年 | 134篇 |
2018年 | 182篇 |
2017年 | 135篇 |
2016年 | 138篇 |
2015年 | 136篇 |
2014年 | 198篇 |
2013年 | 205篇 |
2012年 | 380篇 |
2011年 | 377篇 |
2010年 | 263篇 |
2009年 | 180篇 |
2008年 | 288篇 |
2007年 | 325篇 |
2006年 | 354篇 |
2005年 | 291篇 |
2004年 | 285篇 |
2003年 | 283篇 |
2002年 | 269篇 |
2001年 | 121篇 |
2000年 | 110篇 |
1999年 | 107篇 |
1998年 | 62篇 |
1997年 | 54篇 |
1996年 | 47篇 |
1995年 | 39篇 |
1994年 | 30篇 |
1993年 | 28篇 |
1992年 | 76篇 |
1991年 | 98篇 |
1990年 | 81篇 |
1989年 | 76篇 |
1988年 | 63篇 |
1987年 | 68篇 |
1986年 | 60篇 |
1985年 | 63篇 |
1984年 | 40篇 |
1983年 | 27篇 |
1982年 | 17篇 |
1981年 | 15篇 |
1980年 | 9篇 |
1979年 | 20篇 |
1978年 | 19篇 |
1977年 | 10篇 |
1973年 | 12篇 |
1972年 | 11篇 |
1966年 | 7篇 |
排序方式: 共有6267条查询结果,搜索用时 15 毫秒
91.
92.
Yoshiki Uehara MD PhD Mitsuyuki Shimizu MD PhD Michihiro Yoshimura MD PhD 《Catheterization and cardiovascular interventions》2014,83(7):1093-1096
We present a case of stenoses in the right coronary artery with a previously deployed stent showing gross protrusion into the aorta. Despite difficulty in cannulation of a guiding catheter into the coronary artery, percutaneous intervention was accomplished using a novel technique to engage the protruding stent. © 2013 Wiley Periodicals, Inc. 相似文献
93.
Nobuaki Sakamoto Huanhuan Hu Akiko Nanri Tetsuya Mizoue Masafumi Eguchi Takeshi Kochi Tohru Nakagawa Toru Honda Shuichiro Yamamoto Takayuki Ogasawara Naoko Sasaki Akiko Nishihara Teppei Imai Toshiaki Miyamoto Makoto Yamamoto Hiroko Okazaki Kentaro Tomita Akihiko Uehara Ai Hori Makiko Shimizu Taizo Murakami Keisuke Kuwahara Ami Fukunaga Isamu Kabe Tomofumi Sone Seitaro Dohi 《Journal of diabetes investigation.》2020,11(3):719-725
94.
Objective
First degree relatives (FDRs) of someone with colorectal cancer (CRC) are at increased risk of the disease. In this study we examine the factors associated with discussing family history of CRC with a health professional.Methods
People with CRC, recruited through the population-based Victorian Cancer Registry in Australia, were asked to refer FDRs to the study. Eight hundred and nineteen FDRs completed a telephone interview.Results
Thirty-six percent of FDRs recalled ever being asked about their family history of bowel cancer by a health professional. Factors associated with having this discussion were being aged 50–60 years, having a university education, being in the potentially high risk category, being very worried about getting bowel cancer and knowing that family history increases risk through discussions with family, friends or their own education.Conclusion
Despite evidence that doctor endorsement is a key factor in the uptake of CRC screening, our study shows that the majority of FDRs do not recall being asked by a health professional about their family history.Practice implications
There is a need to identify the most appropriate method to improve rates of health professional discussion of family history with relatives of CRC patients in order to improve screening rates. 相似文献95.
Case series of 17 patients with cholangiocarcinoma among young adult workers of a printing company in Japan 下载免费PDF全文
Shoji Kubo Yasuni Nakanuma Shigekazu Takemura Chikaharu Sakata Yorihisa Urata Akinori Nozawa Takayoshi Nishioka Masahiko Kinoshita Genya Hamano Hiroaki Terajima Gorou Tachiyama Yuji Matsumura Terumasa Yamada Hiromu Tanaka Shoji Nakamori Akira Arimoto Norifumi Kawada Masahiro Fujikawa Hiromitsu Fujishima Yasuhiko Sugawara Shogo Tanaka Hideyoshi Toyokawa Yuko Kuwae Masahiko Ohsawa Shinichiro Uehara Kyoko Kogawa Sato Tomoshige Hayashi Ginji Endo 《Journal of hepato-biliary-pancreatic sciences》2014,21(7):479-488
96.
97.
98.
Uehara N Takagi Y Miwa Z Sugimoto K 《International journal of paediatric dentistry / the British Paedodontic Society [and] the International Association of Dentistry for Children》2012,22(5):331-341
International Journal of Paediatric Dentistry 2012; 22: 331–341 Aims. The aim of this study was to assess the internal stress of children during dental treatment based on autonomic nerve activity and facial muscle activity. Methods. We recorded the electrocardiogram of children during the treatment of composite resin restoration and analysed autonomic nerve activity by means of power spectral analysis of heart rate variability. Simultaneously, electromyography (EMG) activity of the corrugator muscle was recorded in children during dental treatment, and the relationship between sympathetic nerve activity and corrugator EMG activity was analysed. Results. In all subjects, the mean sympathetic nerve activity was significantly higher during oral examination and after treatment compared with pre‐treatment. Depending on the sympathetic nerve responses to the other treatment procedures, the subjects could be classified into two groups: the stress group and the nonstress group. Sympathetic nerve activity was significantly higher during infiltration anaesthesia and cavity preparation compared with pre‐treatment activity in the stress group, whereas it was consistently lower than the pre‐treatment levels during most treatment procedures in the nonstress group. The mean amplitudes of the averaged corrugator muscle EMG during dental treatment did not differ between the stress and nonstress groups. Conclusion. The present results suggest that the measurement of autonomic nervous activity, especially sympathetic nervous activity, is quite useful in assessing the internal stress of children, even when no expressed sign of unease are present during dental treatment. 相似文献
99.
Katsuyoshi Sakaguchi Sawako Uehara Takakazu Yagi Shouichi Miyawaki 《Orthodontic Waves》2012,71(3):79-84
PurposeIt is clinically believed that humans with a broad and rounded dental arch accompanied by a shallow curve of Spee have good masticatory function. However, the relationship between them has not been elucidated fully. The purpose of this study was to quantitatively examine the relationship between occlusal curvatures and bite force.Materials and methodsBite force was measured and analyzed in 20 young adults with healthy permanent dentition and normal stomatognathic function using a bite force recording system. Study models of the mandibular dental arch were scanned with CCD cameras, and X, Y and Z coordinates of the cusp tips of the molars were recorded. Their occlusal curvatures were analyzed using a three-dimensional measurement system.ResultsBite force showed significant positive correlations (0.52 < R < 0.57) with the radius of the anteroposterior occlusal arc of the molar region and the radii of the translateral occlusal arcs in the second premolar, first molar and second molar regions, and showed significant positive correlation (R = 0.71) with the radius of the occlusal sphere of the molar region.ConclusionsIt was suggested that occlusal curvatures is related with the magnitude of bite force, and that the three dimensional spherical analysis of occlusal curvatures is useful predictor of the masticatory function. 相似文献
100.