全文获取类型
收费全文 | 65083篇 |
免费 | 3094篇 |
国内免费 | 1254篇 |
专业分类
耳鼻咽喉 | 233篇 |
儿科学 | 324篇 |
妇产科学 | 287篇 |
基础医学 | 1528篇 |
口腔科学 | 221篇 |
临床医学 | 6058篇 |
内科学 | 2772篇 |
皮肤病学 | 1195篇 |
神经病学 | 998篇 |
特种医学 | 1245篇 |
外国民族医学 | 12篇 |
外科学 | 3386篇 |
综合类 | 16893篇 |
预防医学 | 5915篇 |
眼科学 | 409篇 |
药学 | 8646篇 |
113篇 | |
中国医学 | 17691篇 |
肿瘤学 | 1505篇 |
出版年
2024年 | 511篇 |
2023年 | 1525篇 |
2022年 | 1897篇 |
2021年 | 2100篇 |
2020年 | 1733篇 |
2019年 | 1521篇 |
2018年 | 838篇 |
2017年 | 1441篇 |
2016年 | 1598篇 |
2015年 | 1954篇 |
2014年 | 3367篇 |
2013年 | 3214篇 |
2012年 | 4253篇 |
2011年 | 4255篇 |
2010年 | 3878篇 |
2009年 | 3650篇 |
2008年 | 4168篇 |
2007年 | 3499篇 |
2006年 | 3370篇 |
2005年 | 3514篇 |
2004年 | 2654篇 |
2003年 | 2611篇 |
2002年 | 1982篇 |
2001年 | 1650篇 |
2000年 | 1338篇 |
1999年 | 994篇 |
1998年 | 935篇 |
1997年 | 813篇 |
1996年 | 755篇 |
1995年 | 715篇 |
1994年 | 639篇 |
1993年 | 406篇 |
1992年 | 332篇 |
1991年 | 311篇 |
1990年 | 287篇 |
1989年 | 300篇 |
1988年 | 97篇 |
1987年 | 110篇 |
1986年 | 61篇 |
1985年 | 56篇 |
1984年 | 37篇 |
1983年 | 16篇 |
1982年 | 18篇 |
1981年 | 13篇 |
1980年 | 4篇 |
1979年 | 2篇 |
1976年 | 1篇 |
1958年 | 6篇 |
1957年 | 1篇 |
1954年 | 1篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
91.
闭经在临床上属难治之证。《陈素庵妇科补解》[1]对妇人闭经有独特见解和丰富经验,在临床运用中疗效确切,为众多医家所推崇,该书对闭经的病因病机、辨证,治则治法进行了较完备的叙述。本文就其诊治闭经贡献作一浅析。 相似文献
92.
追逐“土气”,是职业女性不堪承受现代城市文明的资源,极力回味天然与宁静的一种愿望。吃粗粮野菜,穿布衣麻裙,喝山泉水,玩土泥巴……“土气”是一种时尚一种生活态度,更是一种健康的回归。本刊前两期分别为您诠释了“土气”饮食和“土气”着装的健康意义,这期将为您提供“土气”居住的完美方案。 相似文献
93.
2004年6月1日至4日,某乡中学发生一起36名学生陆续以头晕、恶心、头痛、腹痛为主要症状到乡卫生院就诊的事件。经流行病学调查、临床资料分析和实验室检测,证实该事件为一起由于补碘所引起的群发性癔病,现将调查结果报告如下。1流行病学调查1.1发病经过:首例就诊学生6月1日15时以恶心、头痛、腹痛为主要症状就诊。以后陆续有类似症状的学生发病,至6月4日凌晨1时30分,共有36名学生就诊。发病高峰在6月3日13时以后。36例学生均为某乡中学初一至初三的学生,其中女生32人,男生4人;年龄在13~17岁,其中13岁3人,14岁16人,15岁7人,16岁9人,17岁1人。… 相似文献
94.
短程大剂量激素治疗急性喉炎75例临床分析 总被引:1,自引:0,他引:1
急性喉炎是耳鼻咽喉科、儿科常见急症,由于小儿有特殊的解剖结构,发病急骤,病情进展快,如处理不,预后凶险。治疗以抗炎抗病毒、激素为主,若上述治疗不能缓解,急需气管插管或气管切开。作者总结近两年收住我院两科急性喉炎病例75例,分析报告如下。 相似文献
95.
96.
补中益气汤为金元时期李东垣所创制,首载于《脾胃论》。方由黄芪、党参、甘草、白术、当归、陈皮、升麻、柴胡组成。具有益气升阳、调补脾胃的功效,原为劳倦内伤、清阳下陷、脾胃气虚诸证而设。笔者近年来用此方加减,用于治疗骨伤科病症效果良好,现举例如下。1骨折愈合后下肢肿胀刘某,女,45岁,工人,2001年4月28日初诊。自述右股骨干骨折行交锁髌内钉内固定术后6月,术后3月时拄双拐下地行走,出现右小腿、踝及足部肿胀,曾给予中西药物治疗效果不佳。现症:右小腿、踝及足部肿胀,患肢周径较健侧同段周径大3cm,按之浮软不起,患肢皮色紫黯,倦怠纳… 相似文献
97.
目的观察补脾泻肝法治疗腹泻型肠易激综合征的临床疗效。方法100例腹泻型肠易激综合征患者随机分为2组,治疗组60例给予白术芍药散加味,对照组40例给予丙咪嗪合替加色罗治疗。2组均4周为1个疗程,观察疗效,并于3-6个月后观察2组病例复发情况。结果治疗组治愈率为65%,总有效率为85%,6个月内复发率为20%,对照组则分别为32.5%、72.5%、55.56%,2组比较差异均有统计学意义(均P<0.05)。结论补脾泻肝法治疗腹泻型肠易激综合征优于丙咪嗪合替加色罗,疗效确切。 相似文献
98.
对于移位的肱骨大结节骨折,复位后常规的固定方法包括螺钉、钢丝及缝合等,但这些固定方法往往并不适用于粉碎性骨折,亦未见相关文献报道。该研究的目的是评估一种新型双排缝合线锚定器内固定治疗移位的肱骨大结节粉碎性骨折的长期效果。2000年至2005年间,共21例单纯移位的肱骨大结节粉碎性骨折,在切开复位内固定治疗中采用双排缝合线锚定器固定(近侧锚定 器修复大结节与肱骨头的解剖关系,远侧锚定器固定大结节骨片)。21例中骨折原因为直接暴力17例,间接暴力4例;男10例, 相似文献
99.
腔内激光治疗大隐静脉曲张192例报告 总被引:4,自引:1,他引:3
目的 探讨腔内激光治疗大隐静脉曲张的疗效。方法 2004年7月~2006年3月我院对192例238条肢体大隐静脉曲张行高位结扎、激光烧灼静脉主干和小腿曲张静脉。小腿局部严重曲张的静脉团,另做切口做局部切除或点状抽拨。结果 本组一次治愈率96.2%(229/238)。9例9条肢体术后因仍有少量曲张静脉存在,局麻下行切除或再次激光治愈。114例大隐静脉主干及小腿局部条索状硬结、疼痛;9例皮肤灼伤。术后住院时间4~8 d,平均5.6 d。158例随访1~18个月,平均11.6月,未见复发。结论 腔内激光治疗大隐静脉曲张效果确切,创伤小。 相似文献
100.
BACKGROUND: As a non-invasive technique which can provide comprehensive biological information, 1H-magnetic resonance spectroscopy (1H-MRS) may provide valuable reference data for irreversible recovery or reversible changes in ischemic tissue after stroke.
OBJECTIVE: To monitor and evaluate the effect of the urokinase thrombolytic therapy after experimental acute cerebral ischemia by 1H-MRS technology and investigate its adaptability.
DESIGN: Randomly controlled animal study.
SETTINGS: Shenzhen Hospital of Peking University and National Key Laboratory of Pattern and Atom & Molecular Physics, Wuhan Physics and Mathematics Institute, Chinese Academy of Science.
MATERIALS: Eleven healthy adult Sprague-Dawley (SD) rats, weighing 260–300 g and of both genders, were supplied by Experimental Animal Center of Tongji Medical Collage, Huazhong University of Science and Technology [SCXK (e) 2004-007]. 4.7T superconducting nuclear magnetic resonance meter was provided by Brucker Company.
METHODS: The experiment was carried out in Shenzhen Hospital of Peking University and National Key Laboratory of Pattern and Atom & Molecular Physics, Wuhan Physics and Mathematics Institute, Chinese Academy of Science from August 2003 to December 2005. ① The rats were randomly divided into 30-minute self-thrombo-embolism group (n =6) and 60-minute self-thrombo-embolism group (n =5). Six rats in 30-minute self-thrombo-embolism group were occluded with clot embolus for 30 minutes and 5 rats in 60-minute self-thrombo-embolism group were occluded for 60 minutes. 10 000 U/kg urokinase was dissolved in 2 mL saline and the operation lasted for 5 minutes. ② 1H-MRS was performed before thrombolysis and at 3 hours and 24 hours after successful embolization. The metabolic changes of N-acetyl-L-aspartic acid (NAA)/phosphocreatine (PCr) + creatine (Cr), choline phosphate (Cho)/PCr+Cr and lactic acid (Lac)/PCr+Cr in the region of interests were analyzed. ③ The T2W image was conducted 24 hours after the thrombolytic therapy with TR=500 ms and TE=25 ms. ④ The subjects were sacrificed immediately after 1H-MRS and the brain tissues were cut into pieces and stained with HE method; in addition, pathological changes were observed under optic microscope.
MAIN OUTCOME MEASURES: ① Metabolic changes of NAA/PCr+Cr, Cho/PCr+Cr and Lac/PCr+Cr in the region of interests; ② T2W image at 24 hours after the thrombolysis; ③ pathological observation of brain tissue.
RESULTS: Eleven rats were all involved in the final analysis. ① Metabolic changes in the region of interests : In 30-minute self-thrombo-embolism group, the Lac peak emerged immediately after the embolism, but the ischemic zone decreased 3 hours after the thrombolytic therapy (0.252±0.01, 0.603±0.01, P < 0.01). Lac/(PCr+Cr) ratio was 0.290±0.01 at 24 hours after thrombolysis, which was higher than that at 3 hours after thrombolysis (P < 0.01). The NAA/ (PCr+Cr) ratio decreased significantly at 3 hours after the thrombolysis as compared with that before thrombolysis (0.922±0.16, 1.196±0.01, P < 0.05). In 60-minute self-thrombo-embolism group, the Lac/(PCr+Cr) ratio was higher at 3 hours after thrombolysis than that before thrombolysis (0.846±0.12, 0.601±0.11, P < 0.05) and the NAA/(PCr+Cr) decreased at 3 hours after the embolism. Fluctuation of NAA/ (PCr+Cr) ranged from 0.68 to 0.75 before thrombolysis and from 0.71 to 0.75 at 3 hours after thrombolysis. ② T2W image: T2W image showed that 2 subjects in 30-minute self-thrombo-embolism group whose Lac/NAA was higher than 0.7 suffered from intracranial hemorrhage. This meant that the subjects with Lac/NAA > 0.7 were more likely to suffer from intracranial hemorrhage. ③ Histological and morphological examinations: Optic microscope demonstrated that interspace surrounding nerve cells was widened at ischemic center; neurons were swelling; nucleus was stained lightly; pyknosis and mesenchymal edema were mainly observed in lateral cortex of brow and vertex and in lateral part of corpus striatum.
CONCLUSION: ①Compound parameters in ischemic area before thrombolysis should be regarded as an important predicting marker for thrombolytic therapy, effect evaluation and termination. ② 1H-MRS combining with other imaging technique is a detecting way for screening cases who are suitable for thrombolytic therapy. 相似文献