全文获取类型
收费全文 | 41293篇 |
免费 | 2023篇 |
国内免费 | 256篇 |
专业分类
耳鼻咽喉 | 482篇 |
儿科学 | 745篇 |
妇产科学 | 422篇 |
基础医学 | 5135篇 |
口腔科学 | 1015篇 |
临床医学 | 2918篇 |
内科学 | 10543篇 |
皮肤病学 | 713篇 |
神经病学 | 3091篇 |
特种医学 | 1523篇 |
外科学 | 6943篇 |
综合类 | 258篇 |
预防医学 | 1432篇 |
眼科学 | 599篇 |
药学 | 3305篇 |
中国医学 | 97篇 |
肿瘤学 | 4351篇 |
出版年
2023年 | 251篇 |
2022年 | 498篇 |
2021年 | 867篇 |
2020年 | 432篇 |
2019年 | 626篇 |
2018年 | 832篇 |
2017年 | 604篇 |
2016年 | 796篇 |
2015年 | 831篇 |
2014年 | 1067篇 |
2013年 | 1308篇 |
2012年 | 2052篇 |
2011年 | 2178篇 |
2010年 | 1213篇 |
2009年 | 1037篇 |
2008年 | 1847篇 |
2007年 | 1942篇 |
2006年 | 1900篇 |
2005年 | 2036篇 |
2004年 | 1895篇 |
2003年 | 1762篇 |
2002年 | 1877篇 |
2001年 | 1304篇 |
2000年 | 1427篇 |
1999年 | 1260篇 |
1998年 | 501篇 |
1997年 | 392篇 |
1996年 | 378篇 |
1995年 | 325篇 |
1994年 | 321篇 |
1993年 | 300篇 |
1992年 | 832篇 |
1991年 | 746篇 |
1990年 | 754篇 |
1989年 | 798篇 |
1988年 | 736篇 |
1987年 | 659篇 |
1986年 | 624篇 |
1985年 | 591篇 |
1984年 | 465篇 |
1983年 | 350篇 |
1982年 | 195篇 |
1981年 | 166篇 |
1980年 | 173篇 |
1979年 | 291篇 |
1978年 | 228篇 |
1977年 | 182篇 |
1974年 | 169篇 |
1971年 | 153篇 |
1969年 | 171篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
21.
M Tokitsu M Nakamura H Yokoyama H Watanabe M Hara K Takeuchi 《No shinkei geka. Neurological surgery》1990,18(2):189-192
Two cases of skullbase-penetrating injuries caused by umbrella tips are reported. Case 1: 24-year-old male. Admitted with disturbance of consciousness, left hemiparesis, nasal bleeding, and laceration of left lower eyelid because of having been stabbed by an umbrella tip. Pupils and fundi revealed no definite findings. Plain skull X-ray showed turbid ethmoid sinus and fracture of planum sphenoidale. Cranial CT showed right putaminal hematoma with intraventricular hemorrhage and pneumocephalus. Increased ICP necessitated surgery two days after the injury. Dural laceration of planum sphnoidale, laceration of left optic nerve, right rectal gyrus contusion and rebleeding from the right lenticulostriate branch were observed. Dural plasty and removal of hematoma with external decompression were carried out. He had a good postoperative course, but left visual loss and left hemiparesis remained. Case 2: 29-year-old male. Admitted with excoriation of his right nostril because of having been stabbed by an umbrella tip, severe headache, and nasal discharge. Oculomotor palsy was observed as well as CSF rhinorrhea and meningeal irritability. Plain skull X-ray showed niveau in sphenoidal sinus, pneumocephalus, and fracture of sella turcica. His complaint disappeared after conservative therapy. We reviewed the literature and found only 4 similar cases. The skullbase, because of its anatomical character, is likely to be penetrated in orbital and periorbital injury caused by umbrella tips. Cases which include disturbance of consciousness have a poor prognosis. We hope the fact that umbrella tips can easily become life-threatening objects will come to the attention of the general public so that similar cases may be avoided. 相似文献
22.
23.
Hideki SATO Kazuyuki KANEMASA Masamichi TANINO Tsugihiro KIMURA Kenji MAENOU Shouji MITSUFUJI Kyouhei MARUYAMA Tadashi KODAMA Kei KASHIMA Naoki TERAMAE Susumu FUKUI Keizo KAGAWA 《Digestive endoscopy》1996,8(1):41-45
Abstract: Biliobiliary fistula is a rare clinical entity. The case of a 72 year old female, who presented with epigastric pain and jaundice, is detailed herein. Endoscopic retrograde cholangiopancreatography (ERCP) revealed two stones, one each in the common bile duct and the gallbladder. Continuous endoscopic nasobiliary drainage (ENBD) was performed to relieve obstructive jaundice. Further study with contrast medium administered via the ENBD tube revealed a fistula between the neck of the gallbladder and the common bile duct. The cystic duct was intact. A stone was considered to have migrated into the common bile duct through the fistula. A diagnosis of biliobiliary fistula, Corlette type I was made. However, in this particular case, a biliobiliary fistula was noted at a site below the junction of the cystic duct and common bile duct. Removal of the gallbladder stones was followed by cholecystectomy. The common bile duct was then repaired by utilizing a T-tube. No evidence of malignancy was recognized in the resected gallbladder specimen. In the one year to date since surgery, the patient has been asymptomatic and without signs of biliary disease. 相似文献
24.
25.
26.
27.
Hidekazu Mukai Hiroshi Yoshinaga Akihiko Watanabe Hitoshi Fujiwara Tsuyoshi Fujita 《Digestive endoscopy》2004,16(Z1):S58-S61
After removal of intraductal stones, a 10‐Fr or 7‐Fr pancreatic stent was placed in 16 patients with upstream ductal dilation proximal to a stricture of the main pancreatic duct. Stents were removed after a mean duration of 52.5 days. Nine patients underwent repeated stenting. About one year after removal of the initial stent, when the remaining upstream ductal dilation was found on follow‐up pancreatograms, the next stent was replaced. Repeated stenting improved outflow of pancreatic juice more effectively than one‐time stenting. Correlation between long‐term pain relief without recurrence of intraductal stones and reduction of duct diameter was also shown. Stent occlusion was observed in 14 of 30 stents. Stent occlusion was frequently associated with recurrence of pancreatitis and intraductal stones, and was also associated with morphologic changes in the pancreatic ductal system. Although there were no significant differences between stent patency of the initial stents and that of the next stents, stent patency of 10‐Fr stents was superior to that of 7‐Fr stents. 10‐Fr stents should be removed within 8 weeks and 7‐Fr stents should be removed within 4 weeks for the prevention of stent occlusion. Repeated stenting with short‐term stenting is therefore considered a safe and effective protocol of endoscopic pancreatic stenting. 相似文献
28.
29.
30.
Y Watanabe J Shimizu Y Yoshida Y Hashizume T Yamada T Iwa 《Nihon Geka Gakkai zasshi》1989,90(9):1432-1435
To evaluate the clinical efficacy of OK-432 immunotherapy, patients admitted between 1975 and 1982 were randomized into two groups: An immunochemotherapy (IM-C) group and a chemotherapy (control) group. For each group, a fixed chemotherapy was administered using a combination of three drugs. The survival rates of cases with non-small cell carcinoma were evaluated at the end of 1987. One hundred and fifty-seven cases in the IM-C group and 148 in the control group were eligible for evaluation of long-term survival rates. Statistically significant improvement of the survival rates in the IM-G group were noted in the following items: All cases, resected cases, non-resected cases, resected stage I + II cases, resected stage III cases, completely resected cases, incompletely resected cases, and cases with epidermoid carcinoma. However, in comparison of adenocarcinoma there was no significant difference between the two groups. SU-polysaccharide skin test and natural killer activity were the best immunological parameters during the OK-432 therapy. To intensify the effects of immunotherapy, a possibility of regional immunotherapy was studied following some experimental works. Regional infusion of LAK cells (induced by incubation of patient's lymphocytes with rIL-2) through bronchial artery after regional infusion of OK-432 and chemotherapeutics showed favorable effect for advanced lung cancer. Future prospect of these regional adoptive immunotherapy was discussed. 相似文献