全文获取类型
收费全文 | 927篇 |
免费 | 51篇 |
国内免费 | 17篇 |
专业分类
耳鼻咽喉 | 1篇 |
儿科学 | 33篇 |
妇产科学 | 15篇 |
基础医学 | 108篇 |
口腔科学 | 19篇 |
临床医学 | 115篇 |
内科学 | 164篇 |
皮肤病学 | 16篇 |
神经病学 | 27篇 |
特种医学 | 170篇 |
外科学 | 166篇 |
综合类 | 27篇 |
预防医学 | 28篇 |
眼科学 | 15篇 |
药学 | 47篇 |
中国医学 | 1篇 |
肿瘤学 | 43篇 |
出版年
2022年 | 5篇 |
2021年 | 10篇 |
2020年 | 6篇 |
2019年 | 10篇 |
2018年 | 14篇 |
2017年 | 10篇 |
2016年 | 12篇 |
2015年 | 11篇 |
2014年 | 30篇 |
2013年 | 33篇 |
2012年 | 21篇 |
2011年 | 31篇 |
2010年 | 46篇 |
2009年 | 34篇 |
2008年 | 22篇 |
2007年 | 31篇 |
2006年 | 25篇 |
2005年 | 25篇 |
2004年 | 26篇 |
2003年 | 16篇 |
2002年 | 23篇 |
2001年 | 21篇 |
2000年 | 32篇 |
1999年 | 25篇 |
1998年 | 41篇 |
1997年 | 31篇 |
1996年 | 23篇 |
1995年 | 18篇 |
1994年 | 20篇 |
1993年 | 11篇 |
1992年 | 11篇 |
1991年 | 23篇 |
1990年 | 32篇 |
1989年 | 35篇 |
1988年 | 20篇 |
1987年 | 24篇 |
1986年 | 21篇 |
1985年 | 20篇 |
1984年 | 24篇 |
1983年 | 14篇 |
1982年 | 14篇 |
1981年 | 8篇 |
1980年 | 12篇 |
1979年 | 12篇 |
1978年 | 14篇 |
1977年 | 9篇 |
1974年 | 4篇 |
1972年 | 4篇 |
1969年 | 3篇 |
1968年 | 3篇 |
排序方式: 共有995条查询结果,搜索用时 19 毫秒
1.
Andy KH Lim 《World journal of gastroenterology : WJG》2020,26(10):1020-1028
Rhabdomyolysis is a syndrome of skeletal muscle injury with release of cellular constituents such as potassium,phosphate,urate and intracellular proteins such as myoglobin into the circulation,which may cause complications including acute kidney injury,electrolyte disturbance and cardiac instability.Abnormal liver function tests are frequently observed in cases of severe rhabdomyolysis.Typically,there is an increase in serum aminotransferases,namely aspartate aminotransferase and alanine aminotransferase.This raises the question of liver injury and often triggers a pathway of investigation which may lead to a liver biopsy.However,muscle can also be a source of the increased aminotransferase activity.This review discusses the dilemma of finding abnormal liver function tests in the setting of muscle injury and the potential implications of such an association.It delves into some of the clinical and experimental evidence for correlating muscle injury to raised aminotransferases,and discusses pathophysiological mechanisms such as oxidative stress which may cause actual liver injury.Serum aminotransferases lack tissue specificity to allow clinicians to distinguish primary liver injury from muscle injury.This review also explores potential approaches to improve the accuracy of our diagnostic tools,so that excessive or unnecessary liver investigations can be avoided. 相似文献
2.
3.
王伏虎 《南京医科大学学报(英文版)》2002,16(2):49-64
Stroke is a debilitating disease that affects millions each year.While in many cases cerebral ischemic in jury can be limited by effectivw resuscitation or thrombolytic treatment,the injured neurons wither in a process known as delayed neuronal death(DND).Mounting evidence indicates that DND is not simply necrosis played out in slow motion but apoptosis is triggered.Of particular interest are two groups of signal proteins that participate in apoptosis-cyclin dependent kinases(CDKs) and p53-among a myriad of signaling events after an ischemic insult.Recent investigations have shown that CDKs,a family of enzymes initially known for their role in cell cycle regulation,are activated in injured neurons in DND.As for p53,new reports suggest that its up-regulation may represent a failed attempt to rescue in jured neurons,although its up-regulation was previously considered an indication of apoptosis.These observations thus rekindle an old quest to identify new neuroprotective targets to minimize the stroke damage.In this review,the author will examine the evidence that indicates the participation of CDKs and p53 in DND and then introduce pre-clinical data to explore CDK inhibition as a potential neuroprotective target.Finally,using CDK inhibition as an example,this paper will discuss the pertinent criteria for a viable neuroprotective strategy for ischemic in jury. 相似文献
4.
Metoclopramide, a substituted benzamide derivative, was orally administered to a patient with intractable hiccups. Dysphoria, akathisia, depressed mood with suicidal ideation, insomnia, racing thoughts, and labile affect were seen following the administration of metoclopramide. The episode met criteria for an organic affective syndrome. It is suggested that the mental status of patients undergoing metoclopramide therapy be monitored, since these symptoms have not been previously reported. 相似文献
5.
M.D.Robert R. Bahnson M.D.B. Simon Slasky M.D.Marc S. Ernstoff M.D.Barbara F. Banner 《Urology》1990,35(6)
The ultrasonographic characteristics of an epidermoid cyst of the testicle are presented. Since these, findings are similar to other published case reports, preoperative sonographic diagnosis of this lagon may be possible. 相似文献
6.
7.
Emma J. Birks MRCP Magdi H. Yacoub DSc FRS Ani Anyanwu FRCS Rosemary Radley Smith FRCP Nicholas R. Banner FRCP Asghar Khaghani FRCS 《The Journal of heart and lung transplantation》2004,23(12):3688-1344
BACKGROUND: Transplantation for patients with a high pulmonary vascular resistance (PVR) carries an increased risk of mortality and right heart failure following heart transplantation and continues to be a major problem. We evaluated the use of hearts from patients who underwent heart and lung transplantation for primary pulmonary hypertension (PPH) as part of a domino procedure because these hearts have hypertrophied right ventricles used to increased pulmonary pressures, but could have a compromised left ventricle or irreversible damage of the right ventricle. METHODS: We reviewed 12 patients with PVR >4 Wood units who underwent orthotopic heart transplantation between 1989 and 1998 using hearts from donors with PPH as part of a domino procedure. RESULTS: We studied 10 men and 2 women, mean age 42.9 years. Mean PVR was 5.3 (range, 4-9) Wood units. Mean ischemia time was 85.3 minutes, and mean donor age was 32 years. Actuarial survival was 75% at 1 year and 75% at 5 years. In the early post-operative period, 3 patients had temporary arrhythmias, 2 required permanent pacemaker implantation, 1 had atrial fibrillation, and 1 had ventricular tachycardia that required defibrillator implantation. At a mean follow-up of 7.8 years, 2 patients had developed asymptomatic transplant coronary disease (both at 8.5 years after transplantation), 1 moderate and 1 very mild; the rest had none. Mean left ventricular ejection fraction at latest follow-up was 70.1% (range, 63%-78%). Right ventricular function assessed clinically and by echocardiography was adequate in the short and long term. CONCLUSIONS: Our results suggest that heart and lung recipients with PPH can provide useful donor hearts to patients with increased PVR and that these hearts function well in the intermediate and long term. 相似文献
8.
9.
K B Isaacson M Amendola M Banner M Glassner S J Sondheimer 《International journal of fertility》1992,37(2):106-110
Over a 13-month period, 14 patients with proximal tubal obstruction underwent transcervical fallopian tube recanalization under fluoroscopic guidance in an outpatient setting at the hospital of the University of Pennsylvania. Twenty-one of 24 attempted tubal dilations (87.5%) were successful, as demonstrated by tubal opacification and contrast spillage into the peritoneal cavity at the conclusion of the procedure. Four intrauterine pregnancies, and no ectopic pregnancies, have followed the recanalization. One pregnancy ended in an early miscarriage, one patient delivered a healthy term female, and two pregnancies are ongoing at greater than twenty weeks' gestation. Two procedure-related complications occurred: in one patient, the isthmic segment of a fallopian tube was perforated, but healed without incident, and another patient experienced a low-grade fever, which resolved with p.o. antibiotics. We therefore conclude that fallopian tube recanalization is a well-tolerated, safe, and effective procedure for the treatment of proximal tubal occlusion. 相似文献
10.