全文获取类型
收费全文 | 5810篇 |
免费 | 245篇 |
国内免费 | 17篇 |
专业分类
耳鼻咽喉 | 75篇 |
儿科学 | 150篇 |
妇产科学 | 61篇 |
基础医学 | 627篇 |
口腔科学 | 163篇 |
临床医学 | 371篇 |
内科学 | 1323篇 |
皮肤病学 | 62篇 |
神经病学 | 465篇 |
特种医学 | 275篇 |
外科学 | 975篇 |
综合类 | 19篇 |
预防医学 | 302篇 |
眼科学 | 75篇 |
药学 | 556篇 |
中国医学 | 9篇 |
肿瘤学 | 564篇 |
出版年
2023年 | 28篇 |
2022年 | 51篇 |
2021年 | 97篇 |
2020年 | 48篇 |
2019年 | 62篇 |
2018年 | 85篇 |
2017年 | 78篇 |
2016年 | 80篇 |
2015年 | 78篇 |
2014年 | 125篇 |
2013年 | 179篇 |
2012年 | 250篇 |
2011年 | 294篇 |
2010年 | 154篇 |
2009年 | 98篇 |
2008年 | 210篇 |
2007年 | 263篇 |
2006年 | 242篇 |
2005年 | 273篇 |
2004年 | 244篇 |
2003年 | 228篇 |
2002年 | 259篇 |
2001年 | 219篇 |
2000年 | 201篇 |
1999年 | 203篇 |
1998年 | 79篇 |
1997年 | 73篇 |
1996年 | 75篇 |
1995年 | 62篇 |
1994年 | 67篇 |
1993年 | 67篇 |
1992年 | 177篇 |
1991年 | 168篇 |
1990年 | 143篇 |
1989年 | 130篇 |
1988年 | 120篇 |
1987年 | 106篇 |
1986年 | 114篇 |
1985年 | 116篇 |
1984年 | 63篇 |
1983年 | 63篇 |
1982年 | 33篇 |
1981年 | 29篇 |
1980年 | 24篇 |
1979年 | 46篇 |
1978年 | 22篇 |
1975年 | 25篇 |
1974年 | 27篇 |
1971年 | 21篇 |
1969年 | 21篇 |
排序方式: 共有6072条查询结果,搜索用时 15 毫秒
91.
Kitaoka H Kuwahara T Nishida K Morimoto K Kubo T Okawa M Furuno T Doi Y 《Journal of cardiology》2005,45(4):155-159
A 41-year-old man was referred to our hospital for further examination because of abnormal electrocardiography findings at a health-check examination. Transthoracic echocardiography showed left ventricular hypertrophy confined to the most distal portion of the left ventricle, which is a typical feature of apical hypertrophic cardiomyopathy. Ten years later, he was again admitted for the evaluation of chest pain. Echocardiography showed asymmetrical septal hypertrophy in addition to apical hypertrophy. These findings demonstrate morphologic evolution in hypertrophic cardiomyopathy from apical hypertrophy to asymmetrical septal hypertrophy. 相似文献
92.
Arata Tabuchi Ryoji Taniguchi Kanako Takahashi Hirokazu Kondo Mitsunori Kawato Takeshi Morimoto Takeshi Kimura Toru Kita Hisanori Horiuchi 《Circulation journal》2008,72(3):420-426
BACKGROUND: There are few monitoring systems widely used in clinical practice for evaluating the effectiveness of aspirin therapy, so in the present study aspirin's antiplatelet effects we investigated with a whole blood aggregometer using a screen filtration pressure (SFP) method. METHODS AND RESULTS: Thirty-five healthy male volunteers took 100 mg/day aspirin for 14 days. Whole-blood aggregation was analyzed at baseline and on days 7 and 14, using collagen and adenosine diphosphate as the stimuli, and compared with the platelet-rich plasma (PRP) aggregation measured by optical aggregometer. The platelet-aggregation threshold index (PATI) for both methods, which was defined as the putative agonist-concentration giving half-maximal aggregation, and the PRP-maximal aggregation rate were analyzed. The maximal aggregation rate induced by 1.6 mg/L collagen decreased from 85.5% (80.8-92.8) [median (interquartile range)] at baseline to 51.5% (39-63.8) on day 14 (p<0.0001). The PRP-PATI and whole-blood PATI for collagen increased from 0.32 (0.28-0.70) to 1.82 mg/L (1.25-2.89) (p<0.0001) and from 0.28 (0.22-0.3) to 1.06 mg/L (1.01-1.29) (p<0.0001) respectively. CONCLUSIONS: The whole-blood PATI and PRP-PATI for collagen, as well as the maximal PRP aggregation rate, clearly distinguish platelet aggregability before and after aspirin intake. However, whole-blood analysis by the SFP-method is easier to perform, and is a promising method of monitoring aspirin's effects. 相似文献
93.
Yushiro Endo Shin-ya Kawashiri Shimpei Morimoto Ayako Nishino Momoko Okamoto Sosuke Tsuji Ayuko Takatani Toshimasa Shimizu Remi Sumiyoshi Takashi Igawa Tomohiro Koga Naoki Iwamoto Kunihiro Ichinose Mami Tamai Hideki Nakamura Tomoki Origuchi Yukitaka Ueki Tamami Yoshitama Nobutaka Eiraku Naoki Matsuoka Akitomo Okada Keita Fujikawa Hideo Otsubo Hirokazu Takaoka Hiroaki Hamada Tomomi Tsuru Shuji Nagano Arinobu Yojiro Toshihiko Hidaka Yoshifumi Tada Atsushi Kawakami 《Medicine》2021,100(1)
We aimed to evaluate the utility of a simplified ultrasonography (US) scoring system, which is desired in daily clinical practice, among patients with rheumatoid arthritis (RA) receiving biological/targeted synthetic disease-modifying antirheumatic drugs (DMARDs).A total of 289 Japanese patients with RA who were started on tumor necrosis factor inhibitors, abatacept, tocilizumab, or Janus kinase inhibitors between June 2013 and April 2019 at one of the 15 participating rheumatology centers were reviewed. We performed US assessment of articular synovia over 22 joints among bilateral wrist and finger joints, and the 22-joint (22j)-GS and 22-joint (22j)-PD scores were evaluated as an indicator of US activity using the sum of the GS and PD scores, respectively.The top 6 most affected joints included the bilateral wrist and second/third metacarpophalangeal joints. Therefore, 6-joint (6j)-GS and -PD scores were defined as the sum of the GS and PD scores from the 6 synovial sites over the aforementioned 6 joints, respectively. Although the 22j- or 6j-US scores were significantly correlated with DAS28-ESR or -CRP scores, the correlations were weak. Conversely, 6j-US scores were significantly and strongly correlated with 22j-US scores not only at baseline but also after therapy initiation.Using a multicenter cohort data, our results indicated that a simplified US scoring system could be adequately tolerated during any disease course among patients with RA receiving biological/targeted synthetic DMARDs. 相似文献
94.
Atsushi Yoshimura Mitsuru Kimura Sachio Matsushita Jun-ichi Yoneda Hitoshi Maesato Yasunobu Komoto Hideki Nakayama Hiroshi Sakuma Yosuke Yumoto Tsuyoshi Takimura Tomomi Tohyama Chie Iwahara Takeshi Mizukami Akira Yokoyama Susumu Higuchi 《Alcoholism, clinical and experimental research》2021,45(11):2335-2346
95.
Hiroaki Shikano Hidenori Ohnishi Hisashi Fukutomi Kimiko Ito Masahiro Morimoto Takahide Teramoto Mitsuhiro Aoki Takezumi Nishihori Yukihiro Akeda Kazunori Oishi Toshiyuki Fukao 《Pediatrics international》2015,57(6):1192-1195
Mondini dysplasia is rare, but has an important association with recurrent bacterial meningitis. We herein describe the case of a 3‐year‐old girl with unilateral sensorineural hearing loss who presented with three independent episodes of bacterial meningitis within 8 months. Temporal bone computed tomography indicated the characteristic features of Mondini dysplasia in the right inner ear. This was treated by surgical closure of the inner ear defect via oval window and additional vaccination was administered. Appropriate vaccination might prevent the recurrent bacterial meningitis associated with Mondini dysplasia. 相似文献
96.
Maki Komiyama Yuka Ozaki Yusuke Miyazaki Akihiro Yasoda Hiromichi Wada Hajime Yamakage Noriko Satoh-Asahara Tatsuya Morimoto Akira Shimatsu Yuko Takahashi Koji Hasegawa 《Internal medicine (Tokyo, Japan)》2021,60(8):1175
Objective The psychological status is a key factor in smoking continuance. However, details on short-term changes in mild depressive states after smoking cessation (SC) are still unknown. The purpose of the present study was to investigate these short-term changes. Methods A total of 989 patients who visited our SC Clinic were assessed using the Zung Self-Rating-Depression-Scale (SDS), an official instrument to measure depressive tendencies. The participants were classified into normal and neurotic groups based on their SDS scores during their initial visit; they were assessed again 2, 4, 8, and 12 weeks thereafter. Results The majority of patients in the neurotic group were women. These patients were also younger, with a higher nicotine dependence, and presented with a lower successful SC rate than the patients in the normal group. A decrease in SDS scores after starting the SC treatment was observed only in the neurotic group, especially during the first two weeks. In patients who continued to smoke, no improvement in depressive tendencies was noted in this period. Conclusion Depressive tendencies of patients with neurosis improve in the initial stages of the SC treatment (i.e., within two weeks after starting the treatment). This finding fills the mentioned knowledge gap regarding the effects of SC on mild depressive states in the short term. 相似文献
97.
Miwa Kawanaka Ken Nishino Yumiko Morimoto Katsunori Ishii Tomohiro Tanikawa Noriyo Urata Mitsuhiko Suehiro Takako Sasai Ken Haruma Hirofumi Kawamoto 《Internal medicine (Tokyo, Japan)》2021,60(9):1397
A 44-year-old patient progressed from nonalcoholic fatty liver (NAFL) to nonalcoholic steatohepatitis (NASH) cirrhosis. She was diagnosed with NAFL via a liver biopsy. At 56 years old, she was diagnosed with NASH stage 3 via a second liver biopsy. One year later, she was diagnosed with NASH cirrhosis via a third liver biopsy. This is the first study to report the gradual deterioration of liver histology shown via three liver biopsies and fibrosis markers in a patient who progressed from NAFL to NASH cirrhosis. Following menopause, it is necessary to be aware of the rapid development of liver fibrosis. 相似文献
98.
Mori K Yoshihara T Nishimura Y Uchida M Katsura K Kawase Y Hatano I Ishida H Chiyonobu T Kasubuchi Y Morimoto A Teramura T Imashuku S 《Bone marrow transplantation》2003,31(12):1173-1176
Management of post-transplant complications caused by severe adenoviral infection remains a major therapeutic challenge. A 17-year-old male who had undergone bone marrow transplantation for the treatment of acute lymphoblastic leukemia developed complete anuria following hemorrhagic cystitis 34 days after the transplant procedure. The computed tomogram scan revealed bilateral hydronephrosis, indicating acute renal failure because of obstructive uropathy. The emergency procedure of percutaneous nephrostomy caused massive bleeding in the left kidney, which eventually required a nephrectomy. Adenovirus-positive severe necrotizing tubulointerstitial nephritis was the histopathological diagnosis. Post-transplant acute renal failure because of hydronephrosis, which could be complicated by adenovirus-induced renal parenchymal disease, is of great concern and may cause significant problems with interventional treatment. 相似文献
99.
T. Takeda N. Morimoto N. Kinukawa R. Nagamine T. Shuto Y. Iwamoto H. Miyahara 《Modern rheumatology / the Japan Rheumatism Association》2000,10(4):240-246
We attempted to identify which background factors were the most important indicators of such psychological problems as emotional
instability, a feeling of hopelessness, and suicidal tendencies in female rheumatoid arthritis (RA) outpatients with limited
functional disorder. Among female RA patients aged 20 years and older who visited the outpatient clinic, 101 class I and II
patients were selected as subjects for the present study. An original questionnaire and a psychological test (CMI) were given
to those subjects who had given their written consent to such testing, and an analysis was carried out on 85 patients who
returned all the written forms. Their emotional instability was related to factors such as "not being able to understand the
nature of RA disease and its treatment," "sense of value had changed after developing RA," "nonuse of drugs," and "duration
of disease." A feeling of hopelessness was related to "smoking," and a suicidal tendency was related to "smoking" and "class
I." We identified a characteristic correlation between emotional instability and background factors in this study. Paying
close attention to these factors may thus be useful in preventing the appearance of psychological problems as well as in developing
effective early treatment strategies.
Received: April 5, 2000 / Accepted: July 19, 2000 相似文献
100.
M. Kuriyama J. Kato N. Morimoto T. Fujimoto H. Okada K. Yamamoto 《Digestive and liver disease》2008,40(6):468-475
BACKGROUND: Crohn's disease patients often carry gastroduodenal lesions. However, few reports have addressed specific gastroduodenoscopic findings in Crohn's disease patients. METHODS: The gastroduodenoscopic findings of 63 Crohn's disease patients were examined. Those of 62 ulcerative colitis and 63 age- and gender-matched gastroesophageal reflux disease patients were also reviewed as controls. Findings of bamboo-joint-like appearance, gastric antral erosions, and duodenal lesions were the specific findings that were highlighted. RESULTS: Of 63 Crohn's disease patients, 47 (75%) had at least one of the specific gastroduodenoscopic findings, and the prevalence of these findings was significantly higher in Crohn's disease patients than in ulcerative colitis and gastroesophageal reflux disease patients (ulcerative colitis, 24/62, 39%; gastroesophageal reflux disease, 15/63, 24%, P < 0.0001). In particular, bamboo-joint-like appearance was almost unique to Crohn's disease patients (Crohn's disease, 28/63, 44%; ulcerative colitis, 3/62, 5%; gastroesophageal reflux disease, 0/63, 0%, P < 0.0001). Analysis of the relationship between the Crohn's disease patient's background and gastrodunodenoscopic findings revealed that both patients with disease affecting the ileum and those with previous gut operations were more likely to exhibit the specific gastroduodenoscopic findings (P = 0.030 and P = 0.043, respectively). CONCLUSION: Specific gastroduodenoscopic findings were observed in Crohn's disease patients. In particular, bamboo-joint-like appearance could be a unique marker of Crohn's disease. 相似文献