全文获取类型
收费全文 | 23534篇 |
免费 | 1281篇 |
国内免费 | 81篇 |
专业分类
耳鼻咽喉 | 143篇 |
儿科学 | 366篇 |
妇产科学 | 388篇 |
基础医学 | 3001篇 |
口腔科学 | 778篇 |
临床医学 | 1714篇 |
内科学 | 5646篇 |
皮肤病学 | 459篇 |
神经病学 | 2162篇 |
特种医学 | 1034篇 |
外科学 | 3547篇 |
综合类 | 92篇 |
预防医学 | 705篇 |
眼科学 | 418篇 |
药学 | 1888篇 |
中国医学 | 64篇 |
肿瘤学 | 2491篇 |
出版年
2023年 | 126篇 |
2022年 | 246篇 |
2021年 | 430篇 |
2020年 | 240篇 |
2019年 | 339篇 |
2018年 | 394篇 |
2017年 | 307篇 |
2016年 | 395篇 |
2015年 | 409篇 |
2014年 | 563篇 |
2013年 | 650篇 |
2012年 | 1007篇 |
2011年 | 1161篇 |
2010年 | 584篇 |
2009年 | 559篇 |
2008年 | 1015篇 |
2007年 | 1018篇 |
2006年 | 990篇 |
2005年 | 986篇 |
2004年 | 949篇 |
2003年 | 959篇 |
2002年 | 984篇 |
2001年 | 920篇 |
2000年 | 938篇 |
1999年 | 917篇 |
1998年 | 291篇 |
1997年 | 235篇 |
1996年 | 226篇 |
1995年 | 182篇 |
1994年 | 163篇 |
1993年 | 151篇 |
1992年 | 652篇 |
1991年 | 565篇 |
1990年 | 597篇 |
1989年 | 578篇 |
1988年 | 493篇 |
1987年 | 456篇 |
1986年 | 451篇 |
1985年 | 403篇 |
1984年 | 278篇 |
1983年 | 236篇 |
1980年 | 91篇 |
1979年 | 240篇 |
1978年 | 142篇 |
1977年 | 128篇 |
1975年 | 100篇 |
1974年 | 95篇 |
1972年 | 105篇 |
1971年 | 103篇 |
1969年 | 101篇 |
排序方式: 共有10000条查询结果,搜索用时 14 毫秒
1.
Toshihiro Yoshitake Akira Takeda Kensaku Ohki Yuko Inoue Takanori Yamawaki Saori Otsuka Minekatsu Akimoto Mitsuru Nemoto Yasuhito Shimakura Akio Sato 《The Journal of dermatology》2015,42(7):735-738
Finasteride is standard medical treatment for androgenetic alopecia; however, no large studies with 5 years or more of follow up have been performed in Japan. The authors followed Japanese men with androgenetic alopecia treated with finasteride for 5 years to evaluate long‐term treatment efficacy. Of 903 men treated with finasteride (1 mg/day), 801 patients were evaluated over 5 years by modified global photographic assessment. Although the proportion of improvement was high (99.4%), modified global photographic assessment scores after 5 years of treatment were lower in patients with more advanced disease as measured by the modified Norwood–Hamilton scale. After separating patients into “sufficient” and “insufficient” efficacy groups according to the modified global photographic assessment score after 5 years (scores ≥6 and <6, respectively), multivariate analysis showed that independent risk factors of insufficient efficacy were age at start of treatment of 40 years or more (P = 0.021) and classification on the modified Norwood–Hamilton scale (P < 0.001), whereas presence of stress at start of treatment was a negative predictor (P = 0.025). In conclusion, continuous finasteride treatment for 5 years improved androgenetic alopecia with sustained effect among Japanese. Younger age and less advanced disease at start of treatment were the key predictors of higher finasteride efficacy. 相似文献
2.
Chie Teramoto PHN RN MS Satoko Nagata PhD PHN RN Reiko Okamoto PhD PHN RN Ruriko Suzuki PHN RN MS Emiko Kishi PhD PHN RN Michie Nomura DSN PHN RN Noriko Jojima PHN RN MS Masumi Nishida PhD PHN RN Keiko Koide PhD PHN RN Emiko Kusano PhD PHN RN Saori Iwamoto PhD PHN RN Sachiyo Murashima PhD PHN RN 《Public health nursing (Boston, Mass.)》2015,32(6):654-661
3.
4.
Kota Sahara Rin Yamada Takashi Fujiwara Koichi Koizumi Shin‐ichiro Horiguchi Tsunekazu Hishima Tatsuro Yamaguchi 《Digestive endoscopy》2015,27(7):768-771
Idiopathic myointimal hyperplasia of mesenteric veins (IMHMV) is a rare and poorly understood ischemic colitis that occurs in the rectosigmoid colon of predominantly young, previously healthy, male patients. A 76‐year‐old Japanese man presented to our hospital with a 1‐year history of worsening diarrhea, lower abdominal pain, and weight loss (−6 kg). Laboratory evaluation revealed white blood cell count of 13 200/μL, C‐reactive protein level of 2.0 mg/dL (normal range, 0.0–0.3), and negative results for stool culture (including Clostridium difficile). Colonoscopy showed circumferential and edematous narrowing of the sigmoid colon with deep longitude ulceration. Biopsy was done and examination of the specimen demonstrated no specific ischemia. The patient was treated with bowel rest, antibiotics, and i.v. fluids; however, his symptoms worsened. Finally, sigmoidectomy was carried out. Histological examination demonstrated significant myointimal hyperplasia of mesenteric veins leading to thickening and stenosis of the venous lumen. Therefore, the final diagnosis was IMHMV. Three months following sigmoidectomy, he was asymptomatic. 相似文献
5.
6.
7.
8.
9.
10.
Experiments were performed on spinalized rats, transected at the Cl level. The intravenous administration of TRH and its analog YM-14673 (N alpha-[(S)-4-oxo-2-azetidinyl) carbonyl]-L-histidyl-L-prolinamide dehydrate) produced marked increases in the amplitude of mono- and polysynaptic reflex potentials and those of the withdrawal flexor reflexes. The effects of YM-14673 were stronger and longer-lasting than those of TRH. The stimulant action of TRH and YM-14673 on the flexor reflexes was not antagonized by prazosin, chlorpromazine, haloperidol or cyproheptadine, suggesting no involvement of the release of catecholamines or serotonin in the stimulant effects of TRH and its analog. Therefore, YM-14673 may be beneficial for the treatment of several spinal motor neuron diseases. 相似文献