全文获取类型
收费全文 | 8791篇 |
免费 | 411篇 |
国内免费 | 73篇 |
专业分类
耳鼻咽喉 | 87篇 |
儿科学 | 170篇 |
妇产科学 | 84篇 |
基础医学 | 1029篇 |
口腔科学 | 149篇 |
临床医学 | 593篇 |
内科学 | 2161篇 |
皮肤病学 | 106篇 |
神经病学 | 636篇 |
特种医学 | 351篇 |
外科学 | 1939篇 |
综合类 | 27篇 |
现状与发展 | 1篇 |
预防医学 | 158篇 |
眼科学 | 135篇 |
药学 | 565篇 |
中国医学 | 8篇 |
肿瘤学 | 1076篇 |
出版年
2024年 | 4篇 |
2023年 | 71篇 |
2022年 | 139篇 |
2021年 | 205篇 |
2020年 | 124篇 |
2019年 | 167篇 |
2018年 | 203篇 |
2017年 | 174篇 |
2016年 | 236篇 |
2015年 | 235篇 |
2014年 | 289篇 |
2013年 | 343篇 |
2012年 | 551篇 |
2011年 | 599篇 |
2010年 | 375篇 |
2009年 | 327篇 |
2008年 | 554篇 |
2007年 | 611篇 |
2006年 | 608篇 |
2005年 | 597篇 |
2004年 | 624篇 |
2003年 | 561篇 |
2002年 | 531篇 |
2001年 | 78篇 |
2000年 | 70篇 |
1999年 | 93篇 |
1998年 | 115篇 |
1997年 | 93篇 |
1996年 | 94篇 |
1995年 | 76篇 |
1994年 | 74篇 |
1993年 | 61篇 |
1992年 | 59篇 |
1991年 | 41篇 |
1990年 | 49篇 |
1989年 | 30篇 |
1988年 | 32篇 |
1987年 | 25篇 |
1986年 | 21篇 |
1985年 | 18篇 |
1984年 | 20篇 |
1983年 | 12篇 |
1982年 | 15篇 |
1981年 | 12篇 |
1980年 | 12篇 |
1979年 | 6篇 |
1978年 | 14篇 |
1977年 | 4篇 |
1976年 | 5篇 |
1971年 | 4篇 |
排序方式: 共有9275条查询结果,搜索用时 0 毫秒
991.
992.
Hiroyasu Yamshiro Hiroji Iwata Norikazu Masuda Naohito Yamamoto Reiki Nishimura Shoichiro Ohtani Nobuki Sato Masato Takahashi Takako Kamio Kosuke Yamazaki Tsuyoshi Saito Makoto Kato Tecchuu Lee Shinji Ohno Katsumasa Kuroi Toshimi Takano Masahiro Takada Shinji Yasuno Satoshi Morita Masakazu Toi 《International journal of clinical oncology / Japan Society of Clinical Oncology》2015,20(4):709-722
993.
Nana Akagi Tsuchihashi Ken Hayashi Katsuaki Dan Fumiyuki Goto Yasuyuki Nomura Masato Fujioka Sho Kanzaki Shizuo Komune Kaoru Ogawa 《Oncotarget》2015,6(6):3644-3655
The aim of this study was to determine whether autophagy and AMPK contribute to premature senescence in auditory cells. Incubating HEI-OC1 auditory cells with 5 mM H2O2 for 1 h induced senescence, as demonstrated by senescence-associated β-galactosidase (SA-β-gal) staining. H2O2 treatment significantly delayed population-doubling time, leaving cell viability unchanged. Furthermore, the proportion of SA-β-gal-positive cells significantly increased. Autophagy-related protein expression increased, with Atg7 and LC3-II peaking 6 h and Lamp2 peaking 24 h after H2O2 treatment. The expression of these proteins decreased 48 h after treatment. Transmission electron microscopy revealed lipofuscin and aggregates within autolysosomes, which accumulated markedly in the cytoplasm of HEI-OC1 cells 48 h after treatment. Akt and P70S6 phosphorylation markedly decreased after H2O2 treatment, but 4EBP1 phosphorylation significantly increased 48 h after treatment. After RNAi-mediated knockdown (KD) of Atg7 and AMPK, H2O2-treated cells displayed dense SA-β-gal staining. Also, premature senescence was significantly induced. These suggest that a negative feedback loop may exist between autophagy and AMPK signaling pathways in HEI-OC1 cells. In our model, oxidative stress-induced premature senescence occurred due to impaired autophagy function through 4EBP1 phosphorylation. Our results also indicate that AMPK may regulate premature senescence in auditory cells in an autophagy-dependent and independent manner. 相似文献
994.
Chieko Kudo Wee Soo Shin Nobuhiro Sasaki Kazuo Harai Kai Kato Hiroaki Seino Eiji Goke Takemasa Fujino Nobuichi Kuribayashi Youko Onuki Pearce Masato Taira Ryoji Matsushima Masato Minabe Shogo Takashiba Periodontitis Atherosclerosis Project-Tokyo Chiba Consortiums 《Odontology / the Society of the Nippon Dental University》2018,106(3):316-327
Atherosclerosis, a chronic inflammatory disease in arterial blood vessels, is one of the major causes of death in worldwide. Meanwhile, periodontal disease is a chronic inflammatory disease caused by infection with periodontal pathogens such as P. gingivalis (Porphyromonas gingivalis). Several studies have reported association between periodontal infection and atherosclerosis, but direct investigation about the effects of periodontal treatment on atherosclerosis has not been reported. We have planned Japanese local clinics to determine the relationship between periodontal disease and atherosclerosis under collaborative with medical and dental care. A prospective, multicentre, observational study was conducted including 38 medical patients with lifestyle-related diseases in the stable period under consultation at participating medical clinics and 92 periodontal patients not undergoing medical treatment but who were consulting at participating dental clinics. Systemic and periodontal examinations were performed before and after periodontal treatment. At baseline, LDL-C (low-density lipoprotein cholesterol) levels and percentage (%) of mobile teeth were positively related to plasma IgG (immunoglobulin) antibody titer against P. gingivalis with multivariate analysis. Corresponding to improvements in periodontal clinical parameters after treatment, right and left max IMT (maximum intima-media thickness) levels were decreased significantly after treatment (SPT-S: start of supportive periodontal therapy, SPT-1y: at 1 year under SPT, and SPT-3y: at 3 years under SPT). The present study has clarified our previous univariate analysis results, wherein P. gingivalis infection was positively associated with progression of atherosclerosis. Thus, routine screening using plasma IgG antibody titer against P. gingivalis and periodontal treatment under collaborative with medical and dental care may prevent cardiovascular accidents caused by atherosclerosis. 相似文献
995.
Chieko Kudo Wee Soo Shin Nobuhiro Sasaki Kazuo Harai Kai Kato Hiroaki Seino Eiji Goke Takemasa Fujino Nobuichi Kuribayashi Youko Onuki Pearce Masato Taira Ryoji Matsushima Masato Minabe Shogo Takashiba Periodontitis Atherosclerosis Project-Tokyo Chiba Consortiums 《Odontology / the Society of the Nippon Dental University》2018,106(3):349-349
996.
997.
998.
Aratake M Shigeyuki M Atsushi H Takeuchi R Saito T 《The Journal of foot and ankle surgery》2012,51(2):237-240
Juxta-articular osteoid osteoma is a rare disorder that is difficult to correctly diagnose at an early stage. We report a case of osteoid osteoma in the calcaneus that arose near to the talocalcaneal joint. An 18-year-old female presented with symptoms of joint swelling and effusion similar to those of monoarthritis. Conservative treatment proved ineffective in achieving pain relief, and she underwent surgery 6 months later. The lesion was diagnosed by histologic examination, and it resolved after resection of the tumor. 相似文献
999.
1000.