全文获取类型
收费全文 | 7644篇 |
免费 | 380篇 |
国内免费 | 24篇 |
专业分类
耳鼻咽喉 | 65篇 |
儿科学 | 197篇 |
妇产科学 | 128篇 |
基础医学 | 1151篇 |
口腔科学 | 199篇 |
临床医学 | 523篇 |
内科学 | 1887篇 |
皮肤病学 | 127篇 |
神经病学 | 634篇 |
特种医学 | 210篇 |
外科学 | 859篇 |
综合类 | 53篇 |
一般理论 | 1篇 |
预防医学 | 300篇 |
眼科学 | 272篇 |
药学 | 740篇 |
中国医学 | 32篇 |
肿瘤学 | 670篇 |
出版年
2023年 | 50篇 |
2022年 | 66篇 |
2021年 | 152篇 |
2020年 | 67篇 |
2019年 | 107篇 |
2018年 | 140篇 |
2017年 | 116篇 |
2016年 | 160篇 |
2015年 | 143篇 |
2014年 | 189篇 |
2013年 | 239篇 |
2012年 | 372篇 |
2011年 | 459篇 |
2010年 | 267篇 |
2009年 | 234篇 |
2008年 | 463篇 |
2007年 | 518篇 |
2006年 | 459篇 |
2005年 | 451篇 |
2004年 | 466篇 |
2003年 | 383篇 |
2002年 | 410篇 |
2001年 | 206篇 |
2000年 | 213篇 |
1999年 | 216篇 |
1998年 | 80篇 |
1997年 | 74篇 |
1996年 | 71篇 |
1995年 | 56篇 |
1994年 | 54篇 |
1993年 | 29篇 |
1992年 | 137篇 |
1991年 | 96篇 |
1990年 | 73篇 |
1989年 | 101篇 |
1988年 | 80篇 |
1987年 | 58篇 |
1986年 | 69篇 |
1985年 | 62篇 |
1984年 | 37篇 |
1983年 | 28篇 |
1982年 | 23篇 |
1980年 | 27篇 |
1979年 | 29篇 |
1978年 | 23篇 |
1975年 | 21篇 |
1974年 | 29篇 |
1973年 | 27篇 |
1972年 | 25篇 |
1970年 | 34篇 |
排序方式: 共有8048条查询结果,搜索用时 31 毫秒
1.
Hori Hiroki Ohta Asuka Matsui Honami Yano Kanako Morita-Tominaka Miyuki Linn Zayar Masumoto Daisuke Okumura Yosuke Okamura Satoshi Kurihara Kosuke Hayakawa Akira Rikiishi Takeshi Kobayashi Kyoko 《International journal of clinical oncology / Japan Society of Clinical Oncology》2022,27(1):245-252
International Journal of Clinical Oncology - The practice of cancer diagnosis disclosure to children has been changed with the times. The regulations of clinical trials in the 2000s might change... 相似文献
2.
3.
4.
Tasuku Ogita Rosaly Vallejo Manaois Manabu Wakagi Tomoyuki Oki Yuko Takano Ishikawa 《International journal of food sciences and nutrition》2016,67(4):431-440
Two cultivars of Japanese parsley were harvested in different seasons; their antioxidant capacities were evaluated by oxygen radical absorbance capacity (ORAC) methods, and the contents of hydrophilic and lipophilic antioxidants were compared. Japanese parsley possessed potent antioxidant capacities both in hydrophilic and lipophilic extracts when evaluated by ORAC methods. LC/MS/MS analyses revealed that chlorogenic acid and four kinds of quercetin glycosides were major antioxidants in the hydrophilic extract. Lutein was the main contributor to the antioxidant capacity of the lipophilic extract. Antioxidant capacities of the hydrophilic extracts of both cultivars tended to be higher in winter because of the increase in the contents of chlorogenic acid and quercetin glycosides. An obvious trend in the lipophilic antioxidant capacities or lutein contents was not observed irrespective of the cultivar. 相似文献
5.
6.
Takahiro Namiki Chika Takano Ryoji Aoki Quang Duy Trinh Ichiro Morioka Satoshi Hayakawa 《Congenital anomalies》2022,62(1):38-41
Congenital rubella syndrome (CRS) results from maternal rubella virus infection in early pregnancy. Abnormal neuroimaging findings have been analyzed in a small number of CRS patients in the past; however, their clinical significance has been poorly addressed. Therefore, we have investigated the neuroimaging findings of 31 patients with CRS from previous studies. The most common finding was parenchymal calcification, which was observed in 18 of 31 patients (58.1%). A multivariable logistic regression model showed that it was associated with psychomotor or mental retardation (p = 0.018), suggesting that parenchymal calcification in CRS could be a prognostic factor. 相似文献
7.
Hiroto Kinoshita Hitomi Nishioka Aya Ikeda Kyoko Ikoma Yoichi Sameshima Hidehisa Ohi Mizuki Tatsuno Junka Kouyama Chiaki Kawamoto Tomohiro Mitsui Yuko Tamura Yu Hashimoto Masashi Nishio Tsuyoshi Ogashiwa Yusuke Saigusa Shin Maeda Hideaki Kimura Reiko Kunisaki Kazuhiko Koike 《Journal of gastroenterology and hepatology》2019,34(11):1929-1939
8.
9.
10.
Tatsurou Tanaka Yasuhiro Morimoto Hiroshi Takano Kazuhiro Tominaga Shinji Kito Sachiko Okabe Tetsu Takahashi Jin-ichi Fukuda Takeshi Ohba 《Oral surgery, oral medicine, oral pathology, oral radiology, and endodontics》2005,100(5):609-613
OBJECTIVE: To evaluate a proposed technique for the 3-dimensional (3D) detection of hemangiomas, including vascular malformation and their feeding arteries, in the head and neck. The new technique combines phase-contrast magnetic resonance angiography (PCMRA) without contrast medium and 3D fast asymmetric spin-echo (FASE) sequences. METHODS: The technique was applied to 3 patients having hemangiomas in the head and neck region. In 1 patient the image obtained with the proposed technique was compared to that obtained by standard contrast angiography. RESULTS: In all 3 patients, the 3D presence of the hemangiomas and the feeding arteries were well defined in images created by the proposed technique. Additionally, the characterization of the hemangioma's 3D structure and distribution of the feeding arteries coincided with those observed using contrast angiography in the case for which contrast angiography was also performed. CONCLUSIONS: Preliminary experience shows that the proposed technique combining 3D-FASE and 3D-PCMRA is useful to visualize both the 3D structure of hemangiomas and to identify the 3D distribution of the feeding arteries without using contrast medium. 相似文献