全文获取类型
收费全文 | 13133篇 |
免费 | 699篇 |
国内免费 | 114篇 |
专业分类
耳鼻咽喉 | 333篇 |
儿科学 | 668篇 |
妇产科学 | 536篇 |
基础医学 | 988篇 |
口腔科学 | 429篇 |
临床医学 | 1042篇 |
内科学 | 3315篇 |
皮肤病学 | 194篇 |
神经病学 | 767篇 |
特种医学 | 560篇 |
外科学 | 3230篇 |
综合类 | 176篇 |
一般理论 | 1篇 |
预防医学 | 297篇 |
眼科学 | 459篇 |
药学 | 468篇 |
中国医学 | 23篇 |
肿瘤学 | 460篇 |
出版年
2024年 | 10篇 |
2023年 | 104篇 |
2022年 | 172篇 |
2021年 | 398篇 |
2020年 | 254篇 |
2019年 | 321篇 |
2018年 | 392篇 |
2017年 | 326篇 |
2016年 | 540篇 |
2015年 | 630篇 |
2014年 | 680篇 |
2013年 | 818篇 |
2012年 | 1061篇 |
2011年 | 965篇 |
2010年 | 602篇 |
2009年 | 518篇 |
2008年 | 875篇 |
2007年 | 1033篇 |
2006年 | 945篇 |
2005年 | 932篇 |
2004年 | 819篇 |
2003年 | 611篇 |
2002年 | 569篇 |
2001年 | 69篇 |
2000年 | 33篇 |
1999年 | 48篇 |
1998年 | 58篇 |
1997年 | 43篇 |
1996年 | 28篇 |
1995年 | 24篇 |
1994年 | 15篇 |
1993年 | 7篇 |
1992年 | 8篇 |
1991年 | 10篇 |
1990年 | 9篇 |
1989年 | 4篇 |
1988年 | 2篇 |
1986年 | 2篇 |
1985年 | 3篇 |
1984年 | 1篇 |
1979年 | 2篇 |
1978年 | 1篇 |
1975年 | 1篇 |
1973年 | 2篇 |
1971年 | 1篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
21.
22.
23.
Perinatal hypoxia-ischaemia induces a biphasic cerebral injury: the depletion in high energy phosphates during the insult returns to normal soon after resuscitation. However, some 8–15 h later a second phase of impaired energy metabolism begins, which is related to the severity of later neurodevelopmental impairment. Delayed injury differs from acute hypoxia-ischaemia because intracellular acidosis does not occur. Apoptosis may be a mechanism of delayed cellular injury. Apoptotic cells and typical DNA fragmentation have been found after perinatal hypoxia-ischaemia. In newborn piglets, fraction of apoptotic cells was directly related to the degree of high energy phosphate depletion during hypoxia-ischaemia. Apoptosis may be interrupted: in piglets, brain cooling for 12 h following resuscitation reduced the fraction of apoptotic but not necrotic cells. These results have implications for both the understanding of cerebral injury and the use of hypothermia as a neural rescue strategy in the developing brain. 相似文献
24.
Orbital hydatid cyst is rare. We present a case with CT and MRI, emphasizing the superiority of the latter.
Received: 19 August 1996 Accepted: 9 September 1996 相似文献
25.
Neuroleptic malignant syndrome induced by ziprasidone on the second day of treatment. 总被引:1,自引:0,他引:1
Murat Eren Ozen Mehmet Yumru Haluk A Savas Neslihan Cansel Hasan Herken 《The world journal of biological psychiatry》2007,8(1):42-44
Neuroleptic malignant syndrome (NMS) is the rarest and most serious of the neuroleptic-induced movement disorders. We describe a case of neuroleptic malignant syndrome (NMS) associated with the use of ziprasidone. Although conventional neuroleptics are more frequently associated with NMS, atypical antipsychotic drugs like ziprasidone may also be a cause. The patient is a 24-year-old male with a history of schizophrenia who developed signs and symptoms of NMS after 2 days of treatment with an 80-mg/day dose of orally administrated ziprasidone. This case is the earliest (second day of treatment) NMS due to ziprasidone reported in the literature. 相似文献
26.
Which patient, which pump? 总被引:1,自引:0,他引:1
27.
Bilge Türk Bilen Hidir Kilin? Nezih Alaybeyoglu Mehmet Celik Mustafa Iraz Nurzen Sezgin Ahmet Gültek 《Nordisk plastikkirurgisk forening [and] Nordisk klubb for handkirurgi》2006,40(2):73-78
Oxygen-derived free radicals have been implicated in the pathogenesis of tissue injury after ischaemia-reperfusion. Caffeic acid phenethyl ester (CAPE), an active ingredient of honeybee propolis, has been identified as having potent antioxidant and anti-inflammatory properties. We evaluated the ability of CAPE applied intraperitoneally in reducing tissue injury after ischaemia-reperfusion. To investigate whether treatment with CAPE modifies the concentrations of the endogenous indices of oxidant stress, we examined its effects on a model of flap ischaemia-reperfusion injury in rats. CAPE (10 micromol/kg) was given through the peritoneum before reperfusion. CAPE given intraperitoneally had an inhibitory effect on tissue injury after ischaemia-reperfusion comparable to that of a control group. The anti-inflammatory and antioxidant properties of CAPE may contribute to its suppression of tissue injury. 相似文献
28.
29.
Acute subdural hematoma: Outcome and outcome prediction 总被引:3,自引:0,他引:3
R. Kemal Koç M.D. Hidayet Akdemir I. Suat Öktem Mehmet Meral Ahmet Menkü 《Neurosurgical review》1997,20(4):239-244
Patients with traumatic acute subdural hematoma were studied to determine the factors influencing outcome.Between January 1986 and August 1995, we collected 113 patients who underwent craniotomy for traumatic acute subdural hematoma. The relationship between initial clinical signs and the outcome 3 months after admission was studied retrospectively.Functional recovery was achieved in 38% of patients and the mortality was 60%. 91% of patients with a high Glasgow Coma Scale (GCS) score (9–15) and 23% of patients with a low GCS score (3–8) achieved functional recovery. All of 14 patients with a GCS score of 3 died. The mortality of patients with GCS scores of 4 and 5 was 95% to 75%, respectively. Patients over 61 years old had a mortality of 73% compared to 64% mortality for those aged 21–40 years. 97% of patients with bilateral unreactive pupil and 81% of patients with unilateral unreactive pupil died. The mortality rates of associated intracranial lesions were 91% in intracerebral hematoma, 87% in subarachnoid hemorrhage, 75% in contusion.Time from injury to surgical evacuation and type of surgical intervention did not affect mortality. Age and associated intracranial lesions were related to outcome. Severity of injury and pupillary response were the most important factors for predicting outcome. 相似文献
30.