全文获取类型
收费全文 | 10352篇 |
免费 | 436篇 |
国内免费 | 65篇 |
专业分类
耳鼻咽喉 | 119篇 |
儿科学 | 103篇 |
妇产科学 | 83篇 |
基础医学 | 1161篇 |
口腔科学 | 298篇 |
临床医学 | 786篇 |
内科学 | 2279篇 |
皮肤病学 | 284篇 |
神经病学 | 655篇 |
特种医学 | 543篇 |
外科学 | 2042篇 |
综合类 | 58篇 |
一般理论 | 2篇 |
预防医学 | 412篇 |
眼科学 | 87篇 |
药学 | 807篇 |
中国医学 | 28篇 |
肿瘤学 | 1106篇 |
出版年
2023年 | 55篇 |
2022年 | 102篇 |
2021年 | 175篇 |
2020年 | 107篇 |
2019年 | 145篇 |
2018年 | 201篇 |
2017年 | 147篇 |
2016年 | 190篇 |
2015年 | 194篇 |
2014年 | 248篇 |
2013年 | 291篇 |
2012年 | 493篇 |
2011年 | 527篇 |
2010年 | 320篇 |
2009年 | 258篇 |
2008年 | 472篇 |
2007年 | 473篇 |
2006年 | 479篇 |
2005年 | 465篇 |
2004年 | 464篇 |
2003年 | 463篇 |
2002年 | 444篇 |
2001年 | 332篇 |
2000年 | 329篇 |
1999年 | 321篇 |
1998年 | 171篇 |
1997年 | 103篇 |
1996年 | 100篇 |
1995年 | 103篇 |
1994年 | 88篇 |
1993年 | 58篇 |
1992年 | 229篇 |
1991年 | 211篇 |
1990年 | 222篇 |
1989年 | 221篇 |
1988年 | 177篇 |
1987年 | 198篇 |
1986年 | 165篇 |
1985年 | 157篇 |
1984年 | 105篇 |
1983年 | 86篇 |
1982年 | 44篇 |
1981年 | 55篇 |
1979年 | 95篇 |
1978年 | 42篇 |
1977年 | 56篇 |
1974年 | 47篇 |
1972年 | 42篇 |
1971年 | 41篇 |
1969年 | 45篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
31.
Hideki Aragane Hideki Fujii Takaharu You Atuhiro Morita Morimichi Miyazaki Kiyoshi Morita Tohru Ohkawara Shinji Fukumitu Yoshihiko Sawa Yasuo Ohkawara 《Nihon Shokakibyo Gakkai zasshi》2006,103(5):537-542
This report describes our experience with a 60 year old male who suffered from a recrudescence of groove pancreatitis. He had been treated by conservative medication therapy by proton pump inhibitor used for therapy of duodenal ulcer, and was in remission. During a follow-up one year later, endoscopy revealed gastric cancer, for which a proximal gastrectomy and vagotomy were performed. The patient continues to remain in remission for the groove pancreatitis. Our experience with the clinical course of this disease, in which treatment for duodenal ulcer was used effectively, offers new insights into the progression and therapy of groove pancreatitis. 相似文献
32.
S Minohara S Sasaki K Asada H Muraki T Kodama S Hasegawa M Morita E Tsujii A Takeuchi 《Kyobu geka. The Japanese journal of thoracic surgery》1992,45(12):1106-1108
The patient was a one-year-old boy, who underwent surgery with a diagnosis of atrial septal defect (ASD). During operation, aorto-pulmonary window (A-P window) which had not been detected by the preoperative examinations, was found. Therefore, the A-P window was divided prior to closing ASD. The patient is in good condition six months after the operation. The causes of the inaccurate preoperative diagnosis were discussed. 相似文献
33.
Katsunobu Kawahara Shinji Akamine Takao Takahashi Akihiro Nakamura Hiroyuki Kusano Tohru Nakagoe Takayuki Nakazaki Hiroyoshi Ayabe Masao Tomita 《Surgery today》1994,24(12):1101-1103
We report herein the case of a 75-year-old man who developed anal canal metastasis from squamous cell carcinoma of the lung. Initially, he underwent a right middle and lower lobectomy combined with left atrial wall resection under cardiopulmonary bypass. He presented 3 months later with an anal polyp which had prolapsed and bled, for which he underwent a transanal polypectomy. Histologically, the polyp was classified as squamous cell carcinoma and considered to be a metastasis from the primary lung cancer. He is presently well with no signs of recurrence 9 months after his initial operation. To our knowledge, there has been no other case of anal metastasis from lung cancer ever reported. 相似文献
34.
H Naruse M Morita J Yamamoto H Kawamoto M Itano N Fukutake M Ohyanagi K Fujitani T Iwasaki M Fukuchi 《Journal of cardiology》1992,22(2-3):295-305
To evaluate the extent and characteristics of infarct areas, we performed indium-111 monoclonal antimyosin Fab (InAM), thallium-201 (TL) and Tc-99m pyrophosphate (PYP) imagings in 17 patients with acute myocardial infarction, and tried to find out the mechanism that causes difference of these imagings. In each study, the extent scores as an index of the infarct area were obtained by single photon emission computed tomography (SPECT), and comparisons were made between the results obtained. The overlap between InAM and TL imagings obtained by SPECT was evaluated. Location, severity, extent and patterns of accumulation were compared between InAM and PYP with both planar image and SPECT. The extent scores of InAM correlated well with those of TL (r = 0.73, p < 0.01). However, the overlap of both methods was recognized in 8 of 17 patients, in whom wall thickness of the infarct area as obtained by echocardiography was well preserved. The left ventricular regional asynergy was mild in 6 of these 8 patients. Coronary angiography showed poor or no collateral circulation in these cases. Although there were generally close correlations of the extent scores between InAM and PYP, discrepancy was noted in 2 cases for location; 2 for severity, 5 for extent, and 3 for patterns of accumulation. These differences may be attributed to the timings of imaging, coronary reperfusion and different mechanisms of accumulation. In conclusion, the extent of acute myocardial infarction obtained by InAM correlates well with those obtained by TL and PYP, with some exceptions. 相似文献
35.
Evaluation of renal first pass blood flow with a functional image technique in hypertensive patients
Masatoshi Ishibashi Seiichiro Morita Noriyoshi Umezaki Hisashi Ohtake 《European journal of nuclear medicine and molecular imaging》1988,14(1):25-27
The renal circulation of patients with essential hypertension and renovascular hypertension was evaluated using 99mTc-DTPA. The first renal peak count (the first Cmax; FCmax), time phase distribution (the first Tmax; FTmax), and blood velocity (the FCmax/FTmax) were calculated by digital imaging. This yields a visual image of the renal circulation. We consider that the increase in the renal first pass blood flow in patients with essential hypertension is best observed pixel by pixel. The FCmax and FCmax/FTmax images before and after treatment by percutaneous transluminal renal angioplasty in patients with renovascular hypertension clearly show its therapeutic effect. The FI technique, therefore, has the advantage that it can be performed at the same time as the conventional routine examinations of renal function. This makes it very useful clinically. 相似文献
36.
Hiroyoshi Matsukura M.D. Akira Higuchi M.D. Yoshifumi Suzuki M.D. Toshio Okada M.D. 《Pediatrics international》1987,29(2):277-279
A patient presenting with osteomyelitis of the pelvis is described. In this case it was difficult to establish a correct diagnosis by use of scintigraphic scanning, in spite of clear roentgenographic evidence of osteomyelitis. 相似文献
37.
M. Shiraki M. Fukunaga K. Kushida H. Kishimoto Y. Taketani H. Minaguchi T. Inoue R. Morita H. Morii K. Yamamoto Y. Ohashi H. Orimo 《Osteoporosis international》2003,14(3):225-234
To determine the clinical recommended dosage regimen of risedronate for the treatment of involutional osteoporosis in Japanese patients, dose-response relationships for the efficacy and safety of this drug were investigated using a multi-center, randomized, double-blind, parallel group comparative design with four dose levels of risedronate (placebo, 1 mg, 2.5 mg and 5 mg per day). A total of 211 patients diagnosed with involutional osteoporosis according to the criteria proposed by the Japanese Society for Bone and Mineral Research were randomized and received one of the four doses once daily for 36 weeks. All patients were supplemented with 200 mg of calcium daily in the form of calcium lactate. The primary efficacy endpoint was the percent change in bone mineral density of the lumbar spine (L2-L4 BMD) determined by dual-energy X-ray absorptiometry (DXA) from baseline to the time of final evaluation. Changes in biochemical markers of bone turnover and safety profile were also compared. Percent changes in L2-L4 BMD at final evaluation in the placebo, and 1-, 2.5-, and 5-mg risedronate groups were 0.79+/-5.30, 2.71+/-4.93, 5.29+/-3.96, and 5.15+/-4.25% (mean+/-SD), respectively. A linear dose-response relationship was obtained up to a dose of 2.5 mg, whereas no further increase in BMD was observed at 5 mg. The decrease in bone turnover markers, including N-terminal osteocalcin, phosphorus, and urinary deoxypyridinoline, also showed a linear dose-response relationship up to a dose of 2.5 mg. Alkaline phosphatase level decreased linearly up to a dose of 5 mg. Risedronate was well tolerated in this 36-week study with 1- to 5-mg doses. Neither the overall incidence of adverse events nor the percentage of patients without problem in overall safety assessment differed significantly among the dose groups including the placebo group. Based on these results, a once-daily dose of 2.5 mg of risedronate, which is half that used in Caucasians, is recommended for the treatment of involutional osteoporosis in Japanese patients. 相似文献
38.
39.
Yusuke Ando Takahiro Nishida Shigeki Morita Munetaka Masuda Yukihiro Tomita Ryuji Tominaga 《The Japanese Journal of Thoracic and Cardiovascular Surgery》2006,54(8):335-337
Infective endocarditis of the mitral area accompanied by anorexia nervosa is extremely rare. A 34-year-old Japanese woman presented with high fever and a heart murmur that had developed over the previous 2-month period. Echocardiography revealed mitral regurgitation and vegetation attached to the anterior mitral leaflet, which had markedly prolapsed to the left atrium. We removed the vegetation with a small part of the anterior mitral leaflet and successfully repaired the mitral valve. The patient showed good recovery, and the mitral regurgitation and left ventricular chamber size had satisfactorily decreased at 2 months after the operation. 相似文献
40.
S Kitamura K Niwaya K Kawachi R Morita S Taniguchi T Kawata S Kobayashi M Fukutomi Y Kameda J Hasegawa 《[Zasshi] [Journal]. Nihon Kyōbu Geka Gakkai》1992,40(11):2035-2039
Aortic allograft valves were harvested from non-infected (bacterial or viral) cadavers within 24 hours of death with a family consent, and were sterilized by 4 degrees C antibiotic solution for 48 hours. Then, the allograft was preserved in the 4 degrees C nutrient medium (fresh; TC-199, calf serum and HEPES buffer) or in liquid nitrogen (-196 degrees C) after freezing to -80 degrees C by a programmed freezer. 10% dimethylsulfoxide (DMSO) was used for cryopreservation. Following germ-free confirmation, aortic allograft valves were implanted in 5 patients having aortic regurgitation with good results. Three fresh and two cryopreserved allograft valves were used. Although the follow-up term is very short (maximum 1 year) at the present time, the valve function is quite satisfactory, confirmed by cardiac catheterization and echocardiography. This is the first report in Japan with regard to cryopreservation of allograft valves and clinical use of fresh or cryopreserved valves. We believe that realization and progress of allograft preservation by cryo-technique and establishment of the tissue bank are important for the development of cardiovascular surgery in Japan. 相似文献