全文获取类型
收费全文 | 1937篇 |
免费 | 63篇 |
国内免费 | 7篇 |
专业分类
耳鼻咽喉 | 32篇 |
儿科学 | 24篇 |
妇产科学 | 15篇 |
基础医学 | 225篇 |
口腔科学 | 44篇 |
临床医学 | 71篇 |
内科学 | 498篇 |
皮肤病学 | 7篇 |
神经病学 | 183篇 |
特种医学 | 90篇 |
外科学 | 406篇 |
综合类 | 4篇 |
预防医学 | 42篇 |
眼科学 | 51篇 |
药学 | 98篇 |
中国医学 | 13篇 |
肿瘤学 | 204篇 |
出版年
2023年 | 11篇 |
2022年 | 11篇 |
2021年 | 23篇 |
2020年 | 15篇 |
2019年 | 26篇 |
2018年 | 26篇 |
2017年 | 22篇 |
2016年 | 27篇 |
2015年 | 29篇 |
2014年 | 43篇 |
2013年 | 62篇 |
2012年 | 96篇 |
2011年 | 78篇 |
2010年 | 60篇 |
2009年 | 64篇 |
2008年 | 90篇 |
2007年 | 113篇 |
2006年 | 152篇 |
2005年 | 127篇 |
2004年 | 159篇 |
2003年 | 119篇 |
2002年 | 136篇 |
2001年 | 41篇 |
2000年 | 31篇 |
1999年 | 47篇 |
1998年 | 39篇 |
1997年 | 28篇 |
1996年 | 15篇 |
1995年 | 19篇 |
1994年 | 11篇 |
1993年 | 22篇 |
1992年 | 23篇 |
1991年 | 30篇 |
1990年 | 13篇 |
1989年 | 27篇 |
1988年 | 20篇 |
1987年 | 13篇 |
1986年 | 12篇 |
1985年 | 18篇 |
1984年 | 8篇 |
1983年 | 12篇 |
1982年 | 10篇 |
1981年 | 12篇 |
1980年 | 8篇 |
1979年 | 11篇 |
1978年 | 7篇 |
1977年 | 6篇 |
1973年 | 4篇 |
1969年 | 4篇 |
1968年 | 4篇 |
排序方式: 共有2007条查询结果,搜索用时 21 毫秒
61.
Autoimmune pancreatitis successfully treated with ursodeoxycholic acid 总被引:11,自引:0,他引:11
Tsubakio K Kiriyama K Matsushima N Taniguchi M Shizusawa T Katoh T Manabe N Yabu M Kanayama Y Himeno S 《Internal medicine (Tokyo, Japan)》2002,41(12):1142-1146
A 51-year-old woman with autoimmune pancreatitis is reported in whom treatment with ursodeoxycholic acid (UDCA) was beneficial. Complaining of epigastric discomfort, she presented with liver dysfunction of the cholestatic type, and diabetes mellitus. Pancreatic imaging revealed a diffuse swelling of the body, an irregular narrowing of the main pancreatic duct, and a terminal stricture of the common bile duct. Histologically, the biopsied pancreas was replaced by fibrous tissue with a small amount of mononuclear cell infiltration. She had anti-carbonic anhydrase-II antibody and anti-lactoferrin antibody. After treatment with UDCA, her liver dysfunction and diabetes mellitus improved and the pancreas size was reduced. Steroid therapy is usually indicated for this disorder, but UDCA may be given as an alternative choice. 相似文献
62.
Natsuaki M Nakagawa Y Morimoto T Ono K Shizuta S Furukawa Y Kadota K Iwabuchi M Kato Y Suwa S Inada T Doi O Takizawa A Nobuyoshi M Kita T Kimura T;CREDO-Kyoto PCI/CABG Registry Cohort- Investigators 《The American journal of cardiology》2012,109(10):1387-1396
Therapeutic strategies preventing late target lesion revascularization (TLR) after drug-eluting stent implantation have not been yet adequately investigated. In 13,087 consecutive patients undergoing first percutaneous coronary intervention in the CREDO-Kyoto Registry Cohort-2, we identified 10,221 patients who were discharged alive after implantation of sirolimus-eluting stents (SESs) only (SES stratum 5,029) or bare-metal stents (BMSs) only (BMS stratum 5,192). Impact of statin therapy at time of discharge from the index hospitalization on early (within the first year) and late (1 year to 4 years) TLR, was assessed in the SES stratum (statin group 2,735; nonstatin group 2,294) and in the BMS stratum (statin group 2,576; nonstatin group 2,616). Despite a significantly lower incidence of early TLR (7.8% vs 22.2%, p <0.0001), SES use compared to BMS use was associated with a significantly higher incidence of late TLR (7.7% vs 3.0%, p <0.0001). In the SES and BMS strata, the incidence of early TLR was similar regardless of statin use. In the SES stratum, the incidence of late TLR was significantly lower in the statin group than in the nonstatin group (6.1% vs 9.6%, p = 0.002), whereas no significant difference was found in the BMS stratum (2.6% vs 3.3%, p = 0.38). After adjusting confounders, risk for late TLR significantly favored statin use in the SES stratum (hazard ratio 0.73, 95% confidence interval 0.54 to 0.98, p = 0.04), whereas the risk decrease was not significant in the BMS stratum (hazard ratio 0.74, 95% confidence interval 0.46 to 1.20, p = 0.23). In conclusion, statin therapy at hospital discharge was associated with a significantly lower risk for late TLR after SES implantation. 相似文献
63.
Noriko Azuma Tsukasa Okano Masanori Tamaoki Nobuyoshi Nakajima Noriko Takamura Yasushi Yokohata Junji Shindo Manabu Onuma 《Conservation Genetics Resources》2013,5(4):1001-1003
The large Japanese wood mouse (Apodemus speciosus) is common, but endemic to Japan, and its population structure was affected by habitat fragmentation because of urbanization. It suggested that the species might be one of the important models for the conservation of ecosystems and biodiversity affected by humans, including the effect of radioactive discharge caused by nuclear power plant accidents at Fukushima. We developed and characterized 25 novel polymorphic microsatellite markers from the next-generation sequencing data in an effort to provide an effective tool for genetic studies on this species. In 8 individuals from Aomori, Japan, the number of alleles and expected heterozygosities ranged from 5 to 13 and from 0.795 to 0.991, respectively, suggesting the availability of these markers for genetic studies in this species. 相似文献
64.
65.
66.
Domei T Yokoi H Kuramitsu S Soga Y Arita T Ando K Shirai S Kondo K Sakai K Goya M Iwabuchi M Ueeda M Nobuyoshi M 《Circulation journal》2012,76(2):423-429
67.
Yoshida Y Takahashi Y Minemura N Ueda Y Yamashita H Kaneko H Mimori A 《Modern rheumatology / the Japan Rheumatism Association》2012,22(4):509-514
Clinical presentation of pneumocystis pneumonia (PCP) during immunosuppressive therapy for rheumatic diseases was compared between patients with rheumatoid arthritis (RA; n = 7) and those without RA (non-RA; n = 12) based on a chart review. Both RA and non-RA patients with PCP were treated with methotrexate (n = 7) combined with steroids (n = 6) and/or biologics (n = 4). RA-PCP patients were found to have a higher mortality rate than non-RA-PCP patients (3/7 vs. 0/12, respectively; p?=?0.036) due to a later exacerbation of interstitial pneumonia and a higher presentation rate of diffuse pulmonary lesions (4/7 vs. 1/12, respectively; p?=?0.036) despite lower mean levels of serum beta-D: -glucan (314?±?214 vs. 1139?±?1114?pg/ml, respectively; p?=?0.02) that suggested a lower burden of Pneumocystis jirovecii. In conclusion, PCP in RA patients with existing pulmonary lesions may trigger subsequent progression to lethal interstitial pneumonia. 相似文献
68.
Toshiro Ito Nobuyoshi Kawaharada Yoshihiko Kurimoto Tetsuya Koyanagi Takeshi Uzuka Mayuko Uehara Takayuki Hagiwara Yohsuke Yanase Toshiyuki Maeda Tetsuya Higami 《Surgery today》2013,43(9):1019-1024
Purpose
To evaluate the association of previous abdominal aortic aneurysm (AAA) graft replacement with infradiaphragmatic malperfusion in patients with acute aortic dissection.Methods
Between November 2006 and June 2011, 133 patients were referred to our hospital for management of acute aortic dissection. Eight (6.0 %) of these patients had undergone AAA graft replacement prior to the acute aortic dissection. We compared the computed tomography (CT) images of these 8 patients with those of the remaining 125 patients without previous AAA graft replacement, in terms of organ ischemia as a complication induced by acute aortic dissection.Results
Infradiaphragmatic malperfusion from acute aortic dissection was confirmed in four of the eight patients who had undergone AAA graft replacement. Contrasted CT scan images indicated that the main cause of infradiaphragmatic malperfusion was collapse of the true lumen from compression by the false lumen into the suprarenal aorta. Although there was no significant difference between the groups in terms of cerebral ischemia and myocardial ischemia, bilateral leg ischemia and visceral ischemia occurred more frequently in the patients who had undergone AAA graft replacement.Conclusion
Previous AAA graft replacement is a risk factor for infradiaphragmatic malperfusion in patients with acute aortic dissection. 相似文献69.
Tetsuo Hagino Satoshi Ochiai Yoshiyuki Watanabe Shinya Senga Masanori Saito Yoshihiro Takayama Masanori Wako Takashi Ando Eiichi Sato Hirotaka Haro 《Archives of orthopaedic and trauma surgery》2013,133(4):507-511
Purpose
Hyponatremia in hospitalized patients has been reported to be associated with in-hospital mortality. We studied patients treated at our hospital for hip fracture regarding the factors related to hyponatremia at admission.Methods
Among 580 patients aged 60 years or above who were admitted to our hospital since January 1997 for treatment of hip fracture, 512 patients (110 males, 402 females) from whom serum sodium level at admission was available were studied. In 512 patients, the age at injury ranged from 60 to 103 (mean 82.6) years. Fracture types were femoral neck fracture in 191 patients, and trochanteric fracture in 321. These patients were divided into two groups by the blood sodium level at admission: a hyponatremia group with sodium levels lower than 135 mEq/L, and a normonatremia group with sodium levels within normal range. The age, gender, fracture type, residence before injury, pre-injury walking capability, anemia at admission, liver function, kidney function, inflammatory status, urinary glucose status, lung disease, ECG abnormality, systemic chronic disease, status of dementia, treatment modality, hospital stay (days), and in-hospital death were investigated. First a univariate study was conducted to identify the factors that differ significantly between the two groups. Then multivariate analysis was conducted using the parameters with significant difference as independent variablesResults
Hyponatremia was found in 49 of 512 (9.6 %) patients. In univariate analyses, six factors (age; residence before injury; anemia; dementia; treatment modality; in-hospital death) were significantly different between the hyponatremia group and normonatremia group. Multivariate analysis identified in-hospital death [odds ratio (OR) = 3.64, p = 0.035] and age (OR = 1.05, p = 0.029) as independently associated with hypernatremia.Conclusion
Hyponatremia at admission is prevalent in old aged patients with fracture, and is related to in-hospital death. 相似文献70.
Toshihiko Shinohara Nobuyoshi Hanyu Yujiro Tanaka Keishiro Murakami Atsushi Watanabe Katsuhiko Yanaga 《Langenbeck's archives of surgery / Deutsche Gesellschaft fur Chirurgie》2013,398(2):341-345