全文获取类型
收费全文 | 126101篇 |
免费 | 10719篇 |
国内免费 | 8159篇 |
专业分类
耳鼻咽喉 | 1019篇 |
儿科学 | 1561篇 |
妇产科学 | 2322篇 |
基础医学 | 14803篇 |
口腔科学 | 2060篇 |
临床医学 | 16401篇 |
内科学 | 20669篇 |
皮肤病学 | 1448篇 |
神经病学 | 6875篇 |
特种医学 | 4296篇 |
外国民族医学 | 70篇 |
外科学 | 13093篇 |
综合类 | 18905篇 |
现状与发展 | 24篇 |
一般理论 | 5篇 |
预防医学 | 7809篇 |
眼科学 | 3651篇 |
药学 | 12780篇 |
115篇 | |
中国医学 | 6038篇 |
肿瘤学 | 11035篇 |
出版年
2024年 | 346篇 |
2023年 | 1827篇 |
2022年 | 4658篇 |
2021年 | 5862篇 |
2020年 | 4222篇 |
2019年 | 4061篇 |
2018年 | 4128篇 |
2017年 | 3689篇 |
2016年 | 3460篇 |
2015年 | 5213篇 |
2014年 | 6533篇 |
2013年 | 6090篇 |
2012年 | 8900篇 |
2011年 | 9758篇 |
2010年 | 5945篇 |
2009年 | 4733篇 |
2008年 | 6508篇 |
2007年 | 6494篇 |
2006年 | 6536篇 |
2005年 | 6479篇 |
2004年 | 4458篇 |
2003年 | 4211篇 |
2002年 | 3560篇 |
2001年 | 3223篇 |
2000年 | 3309篇 |
1999年 | 3448篇 |
1998年 | 2243篇 |
1997年 | 2168篇 |
1996年 | 1564篇 |
1995年 | 1457篇 |
1994年 | 1266篇 |
1993年 | 819篇 |
1992年 | 1227篇 |
1991年 | 1075篇 |
1990年 | 931篇 |
1989年 | 823篇 |
1988年 | 712篇 |
1987年 | 668篇 |
1986年 | 508篇 |
1985年 | 463篇 |
1984年 | 249篇 |
1983年 | 178篇 |
1982年 | 118篇 |
1981年 | 116篇 |
1980年 | 76篇 |
1979年 | 120篇 |
1978年 | 59篇 |
1976年 | 52篇 |
1975年 | 55篇 |
1974年 | 65篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
81.
82.
A case of untreated fusarial onychomycosis leading to serious consequences is reported. Fusarium solani is a widespread fungus and an occasional human pathogen. It usually invades rapidly in immunocompromised hosts, and often results in a poor outcome despite treatment. We report a woman with diabetes mellitus who had untreated fusarial infection of the nails, which developed into subcutaneous fusariosis, superinfected by bacteria, and then evolved into osteomyelitis that subsequently resulted in septic shock. Early management of mycotic nails in immunocompromised hosts is crucial to prevent life‐threatening disease. 相似文献
83.
脑出血后血肿周围组织可发生继发性损伤。研究表明,细胞凋亡在脑出血后继发性损伤中起着重要作用。抑制细胞凋亡可显著改善脑出血后的神经功能缺损。 相似文献
84.
M P McMurry P N Hopkins R Gould K Engelbert-Fenton C Schumacher L L Wu R R Williams 《Journal of the American Dietetic Association》1991,91(1):57-65
We have developed a unique, family-oriented approach to lowering plasma cholesterol concentrations in persons with familial hyperlipidemias. The approach includes individual clinic visits and group nutrition classes and uses dietary goals outlined in The New American Diet. A series of 13 nutrition classes is presented to small groups, usually composed of relatives from pedigrees with familial hypercholesterolemia or other familial hyperlipidemias. Dietary action goals, cooking demonstrations, food tasting, and finger-stick plasma cholesterol determinations are important components of the classes. Problem-solving discussion is encouraged in the group. Over the past 4 years, 143 hyperlipidemic individuals, along with at least 94 unaffected family members, have participated in 31 groups, which have met for at least six classes. Many clinic participants lower plasma cholesterol by 20% or more. Keys to the success of this program include emphasizing dietary therapy, using the family setting for nutrition intervention, providing hands-on experience with food and recipes, promoting problem solving for dietary action goals, measuring blood cholesterol during classes, and encouraging long-term follow-up for participants with physicians and dietitians. 相似文献
85.
86.
BACKGROUND AND PURPOSE: Thyroidectomy is a common treatment for thyroid disorders in Taiwan, and constitutes a significant percentage of medical expenses. This study investigated the characteristics of thyroidectomy in Taiwan. METHODS: A total of 21 senior general surgeons from 16 medical centers and 5 regional hospitals participated. One surgeon from each hospital reviewed the hospital's medical records of thyroid operations performed in the year 2001. Medical records for 3846 thyroidectomies were retrospectively analyzed, including surgical indications and modalities, complications, pathology reports, and the use of antibiotics. RESULTS: Most of the patients were women (85%). Indications for surgery included proven malignancy (9%), suspicious malignancy (30%), evident compression symptoms (20%), hyperthyroidism (20%), and cosmetic reasons (12%). The majority of patients (78%) underwent a surgical procedure with lobectomy or bilateral thyroidectomy; 13% had unilateral partial thyroidectomy. Prophylactic antibiotics were administered in 46% of procedures, and continued postoperatively in 12%. Postoperative complications occurred in 12% of patients. Hypocalcemia was the most common complication (8%), and its incidence was significantly correlated with the frequency of total thyroidectomy (p < 0.01). Complete pathology reports for the thyroidectomized specimens were available in only 65% of the cases. The frequency of cosmetic reasons for surgery, unilateral subtotal resection, routine antibiotic administration, and incomplete pathology reports were significantly higher in regional hospitals than in medical centers. CONCLUSIONS: Reduction in the high rates of cosmetic reasons for surgery, unilateral partial thyroidectomy, incomplete pathology reports, and use of antibiotic prophylaxis are needed to improve the quality of thyroidectomy in Taiwan. 相似文献
87.
Pneumocephalus is a very rare complication of video-assisted thoracoscopic surgery (VATS). A 66-year-old man developed pneumocephalus secondary to thoracoscopic excision of a neurogenic tumor in the posterior mediastinum. Pneumocephalus was diagnosed by brain computed tomography. Neurosurgical intervention was performed after conservative therapy had failed. The patient's condition had resolved without any neurologic sequelae 2 years later. When a patient has a relatively large amount of chest tube drainage and neurologic symptoms after VATS, the possibility of pneumocephalus due to cerebrospinal fluid leakage must be considered. 相似文献
88.
89.
The toxic effects of nitroquine-dapsone compound(NQD)in mice and dogs were studied.The therapeutic index of NQDin mice is 1911,the greatest among the 6 antimalarials tested.Thetoxic effects of NQD(50 mg/kg/day for 3 days per os)and nitro-quine in dogs were manifested by injuries on the adrenal cortexand intestinal epithelium.When folic acid(4 mg/kg/day for 4 days)or calcium leucovorinum(0.3 mg/kg/day for 4 days)were usedconcomitantly with NQD,the death rate and the incidence of dia-rrhea in the toxicated dogs were greatly reduced,the injury on theintestinal epithelium was much milder,and the goblet cells weremuch more numerous than those without treatment.The results suggestthat folic acid and calcium leucovorinum can protect the undifferen-tiated cells in the intestinal crypts from being injured by NQD. 相似文献
90.
我们现在要尽量使这些治疗方法进入临床试验证明他们的可行性现在脊髓损伤的临床试验基金很有限,所以只有很少的这些治疗方法真正用于病人主要的制药厂开始对脊髓损伤治疗产生兴趣,我们现在还有很多工作要做,但是前景方向十分清楚,我们需要努力快速的工作。 相似文献