全文获取类型
收费全文 | 1124篇 |
免费 | 41篇 |
国内免费 | 3篇 |
专业分类
耳鼻咽喉 | 18篇 |
儿科学 | 24篇 |
妇产科学 | 6篇 |
基础医学 | 178篇 |
口腔科学 | 9篇 |
临床医学 | 48篇 |
内科学 | 246篇 |
皮肤病学 | 14篇 |
神经病学 | 76篇 |
特种医学 | 23篇 |
外科学 | 263篇 |
综合类 | 2篇 |
预防医学 | 23篇 |
眼科学 | 6篇 |
药学 | 114篇 |
中国医学 | 1篇 |
肿瘤学 | 117篇 |
出版年
2019年 | 8篇 |
2018年 | 6篇 |
2017年 | 16篇 |
2016年 | 20篇 |
2015年 | 21篇 |
2014年 | 34篇 |
2013年 | 35篇 |
2012年 | 51篇 |
2011年 | 66篇 |
2010年 | 26篇 |
2009年 | 28篇 |
2008年 | 43篇 |
2007年 | 57篇 |
2006年 | 59篇 |
2005年 | 53篇 |
2004年 | 45篇 |
2003年 | 41篇 |
2002年 | 52篇 |
2001年 | 46篇 |
2000年 | 36篇 |
1999年 | 28篇 |
1998年 | 24篇 |
1997年 | 13篇 |
1996年 | 7篇 |
1995年 | 7篇 |
1994年 | 13篇 |
1993年 | 16篇 |
1992年 | 34篇 |
1991年 | 19篇 |
1990年 | 38篇 |
1989年 | 26篇 |
1988年 | 22篇 |
1987年 | 20篇 |
1986年 | 13篇 |
1985年 | 18篇 |
1984年 | 10篇 |
1983年 | 11篇 |
1982年 | 6篇 |
1980年 | 5篇 |
1979年 | 10篇 |
1978年 | 4篇 |
1977年 | 9篇 |
1976年 | 5篇 |
1974年 | 8篇 |
1972年 | 7篇 |
1971年 | 4篇 |
1970年 | 10篇 |
1969年 | 4篇 |
1968年 | 5篇 |
1967年 | 4篇 |
排序方式: 共有1168条查询结果,搜索用时 31 毫秒
41.
Mukai Y Tsutsui H Todaka K Mohri M Hirai N Arai H Takeshita A 《Japanese circulation journal》2001,65(9):837-838
Beh?et's disease frequently involves the venous system, usually affecting small vessels, but sometimes large vessels such as the vena cava. Antiphospholipid antibody syndrome is associated with an increased incidence of arterial and venous thrombosis. A 29-year-old male with Beh?et's disease developed bilateral leg edema secondary to thrombotic occlusion of the inferior vena cava. Laboratory tests revealed positive antiphospholipid antibodies and lupus anticoagulant. Treatment with steroid and warfarin subsequent to intravenous administration of uro-kinase resulted in improvement of symptoms. The association of antiphospholipid antibody syndrome and Beh?et's disease may have caused the total thrombotic occlusion of the vena cava in this case. 相似文献
42.
Atsushi Nishiyama Osamu Niikawa Hiroshi Mohri Motoo Tsushima 《Circulation journal》2003,67(8):697-700
Aspirin is used in percutaneous coronary interventions (PCI) for acute myocardial infarction (AMI) to prevent thrombosis. It is reported that the aspirin concentration in blood reaches its peak approximately 20 min after oral administration in healthy volunteers, but the absorption and bioavailability of aspirin in AMI may be quite different. In the present study patients undergoing coronary angiogram for the first time were enrolled as a model of sympathetic excitement and the timing of the antiplatelet effect after oral aspirin administration was investigated. Aspirin (162 mg) was administered to the patients in a catheter laboratory. Platelet count, aspirin concentration, and platelet aggregation were measured at scheduled timepoints before and up to 120 min. Ticlopidine was administered in the same procedure, and platelet count and platelet aggregation were evaluated at 0 and 120 min. There was no significant change in the platelet count. Aspirin concentration in blood had not reached its peak by 120 min. Platelet aggregation induced by collagen or ADP began to be inhibited 45 min after aspirin administration. No significant inhibition of platelet aggregation was observed up to 120 min following ticlopidine administration. During sympathetic excitement, aspirin absorption and its antiplatelet effect were significantly delayed in these patients. Ticlopidine did not show any antiplatelet effect by 120 min. For PCI performed in a patient with a high level of sympathetic excitement, aspirin should be administered at least 45 min before the first balloon dilatation. 相似文献
43.
44.
45.
Toshimitsu Araki Keiichi Uchida Yoshiki Okita Hiroyuki Fujikawa Mikihiro Inoue Masaki Ohi Koji Tanaka Yasuhiro Inoue Yasuhiko Mohri Masato Kusunoki 《Surgery today》2014,44(2):291-296
Purpose
Preventing a recurrence of Crohn’s disease is a problem that remains to be solved. We evaluated the impact of using infliximab as a postoperative therapy on preventing the surgical recurrence of Crohn’s disease.Methods
We performed a pair-matched study comparing 100 patients who had received postoperative infliximab maintenance therapy with those who had not between 1995 and 2010. The patients were matched by gender, Vienna classification and age at the time of the operation. Crohn’s disease-related reoperation was evaluated as surgical recurrence.Results
In the postoperative infliximab maintenance therapy group, infliximab was administrated within 8 weeks after the operation. The median follow-up period was 36 months in the postoperative infliximab maintenance therapy group and 51 months in the control group. Surgical recurrences were recognized in 37 patients (three in the postoperative infliximab maintenance therapy group and 34 in the control group). A univariate analysis by the Kaplan–Meier method identified a body mass index >18 at the time of the operation (HR 0.19, p = 0.01) and postoperative infliximab maintenance therapy (HR 0.22, p = 0.0022) as factors related to the reduction of surgical recurrence. The multivariate analysis revealed that postoperative infliximab maintenance therapy was the only significant factor preventing surgical recurrence.Conclusion
Postoperative infliximab maintenance therapy for Crohn’s disease prevents surgical recurrence, at least within 3 years after the operation. 相似文献46.
Background There has been a trend toward minimally invasive treatment of early gastric cancer. We report the preliminary results of laparoscopy-assisted
distal gastrectomy with laparoscopic sentinel lymph node biopsy after endoscopic mucosal resection.
Methods Six patients underwent laparoscopy-assisted distal gastrectomy after endoscopic mucosal resection between February 2002 and
October 2005 at Mie University Hospital. These patients first underwent laparoscopic sentinel lymph node biopsy and then laparoscopy-assisted
distal gastrectomy with lymphadenectomy.
Results No patient underwent conversion to open surgery during the operation. None of the patients had any postoperative complications.
The mean length of postoperative hospital stay was 11.3 days. Sentinel lymph nodes were identified laparoscopically in five
patients. There were 20 sentinel and 85 nonsentinel lymph nodes in the six patients. Postoperatively, tissue sections showed
that none of the lymph nodes were metastasized. Immunohistochemistry with D2-40 antibody showed that there were normal lymphatics
in the submucosal layer with mucosal defects at the endoscopic mucosal resection site. No patients had any tumor recurrence
during followup.
Conclusions Laparoscopy-assisted distal gastrectomy after endoscopic mucosal resection was a safe and curative procedure. Endoscopic mucosal
resection before sentinel lymph node biopsy was acceptable for early gastric cancer. 相似文献
47.
Kentaro Masujin Yujing Shu Hiroyuki Okada Yuichi Matsuura Yoshifumi Iwamaru Morikazu Imamura Shirou Mohri Takashi Yokoyama 《Archives of virology》2009,154(12):1929-1932
We performed a transmission study using mice to clarify the characteristics of the most recent case of scrapie in Japan. The
mice that were inoculated with the brain homogenate from a scrapie-affected sheep developed progressive neurological disease,
and one of the scrapie-affected mice showed unique clinical signs during primary transmission. This mouse developed obesity,
polydipsia, and polyuria. In contrast, the other affected mice exhibited weight loss and hypokinesia. In subsequent passages,
the mice showed distinct characteristic scrapie phenotypes. This finding may prove that different prion strains coexist in
a naturally affected sheep with scrapie. 相似文献
48.
p53 Mutation in B-Cell Lymphoid Neoplasms with Reference to Oncogene Rearrangements Associated with Chromosomal Translocations 总被引:1,自引:1,他引:1
Takashi Akasaka Mikiko Muramatsu Norimitsu Kadowaki Hitoshi Ohno Kanji Ishizaki Hirohiko Yamabe Shirou Fukuhara Minoru Okuma 《Cancer science》1996,87(9):930-937
We investigated mutations of the p53 tumor suppressor gene in B-cell lymphoid neoplasms with reference to oncogene rearrangements associated with specific chromosomal translocations. These included 15 patients with a BCL1/PRAD1 gene rearrangement and/or PRAD1 overexpression, 45 with a BCL2 rearrangement, 2 with a BCL3 rearrangement, 24 with a BCL6 rearrangement, and 6 with both BCL2 and BCL6 rearrangements. Thirty-six patients lacked detectable oncogene rearrangements. Genomic DNA was isolated from involved tissues or leukemic cells obtained at diagnosis and/or at relapse, and established cell lines. Polymerase chain reaction-mediated single-strand conformation polymorphism analysis and direct sequencing were performed to analyze abnormalities of the p53 gene. We detected p53 gene alterations in 18 of 128 patients, representing 21 of the total 151 materials analyzed. In the total of 66 patients with an oncogene rearrangement studied at diagnosis, only one had a mutation; however, 6 of 37 patients studied at relapse showed p53 mutations. Sequential analysis revealed that the p53 mutation was closely associated with transformation from follicular lymphoma to large cell lymphoma, exclusively in BCL2 -positive lymphoma cases. Two of 13 mutations observed in oncogene rearrangement-positive cases and cell lines were transitions at CpG dinucleotides. In contrast, the relationship between p53 mutations and clinical behavior in oncogene rearrangement-negative cases was variable; 5 patients including one with indolent follicular lymphoma were positive for p53 mutation at initial presentation, and 2 of the 5 showed prolonged disease-free survival. Our findings suggest that p53 alteration exhibits diverse functions in the development and progression of B-cell tumors related to the presence or absence of oncogene rearrangement, and that chemotherapy-related influences may be involved in the occurrence of progression-associated p53 mutations. 相似文献
49.
50.
Chiba K Yamazaki M Umegaki E Li MR Xu ZW Terada S Taka M Naoi N Mohri T 《Biological & pharmaceutical bulletin》2002,25(6):791-793
Syringaresinol isolated from Epimedium koreanum NAKA1 and Magnolia officinalis REHD. et WILS. was subjected to optical resolution by chiral HPLC to give (+)- and (-)-enantiomers. The two syringaresinol enantiomers, as well as a mixture of their glucosides, showed dose-dependent neuritogenesis in a concentration range from 0.24 to 24 microM in PC12h cells. 相似文献