全文获取类型
收费全文 | 5805篇 |
免费 | 62篇 |
专业分类
各国政治 | 177篇 |
工人农民 | 45篇 |
世界政治 | 880篇 |
外交国际关系 | 517篇 |
法律 | 3461篇 |
中国共产党 | 74篇 |
中国政治 | 239篇 |
政治理论 | 382篇 |
综合类 | 92篇 |
出版年
2021年 | 28篇 |
2018年 | 25篇 |
2016年 | 17篇 |
2015年 | 21篇 |
2014年 | 111篇 |
2013年 | 32篇 |
2012年 | 427篇 |
2011年 | 371篇 |
2010年 | 142篇 |
2009年 | 112篇 |
2008年 | 352篇 |
2007年 | 410篇 |
2006年 | 427篇 |
2005年 | 358篇 |
2004年 | 350篇 |
2003年 | 323篇 |
2002年 | 342篇 |
2001年 | 266篇 |
2000年 | 264篇 |
1999年 | 127篇 |
1998年 | 62篇 |
1997年 | 45篇 |
1996年 | 49篇 |
1995年 | 46篇 |
1994年 | 75篇 |
1993年 | 41篇 |
1992年 | 36篇 |
1991年 | 53篇 |
1990年 | 38篇 |
1989年 | 34篇 |
1988年 | 118篇 |
1987年 | 32篇 |
1986年 | 42篇 |
1985年 | 37篇 |
1984年 | 43篇 |
1983年 | 43篇 |
1982年 | 31篇 |
1981年 | 45篇 |
1980年 | 56篇 |
1979年 | 45篇 |
1978年 | 23篇 |
1977年 | 46篇 |
1976年 | 37篇 |
1973年 | 17篇 |
1964年 | 28篇 |
1963年 | 27篇 |
1962年 | 40篇 |
1961年 | 20篇 |
1960年 | 22篇 |
1959年 | 29篇 |
排序方式: 共有5867条查询结果,搜索用时 15 毫秒
951.
952.
A 23 year old man presented with intestinal evisceration from stab injury to the left side of the abdomen with a hand-held cow horn at a local night party. He complained of severe abdominal pain and bleeding at the site of injury. He was hemodynamically stable. At emergency exploration, the eviscerated bowel was viable with no adjacent mesenteric tear. Other intra abdominal organs were normal. The eviscerated bowel was lavaged and reduced into the abdomen through the 7 cm anterior abdominal wall laceration. The laceration was repaired and abdomen closed in layers. Post operative recovery was uneventful. The hand-held cow horn can easily be concealed and may pass through security checks undetected. It should be added to the ever increasing list of weapons of small scale terror. 相似文献
953.
Sabzi F Niazi M Zokaei AH Sahebjamee F Bazargan Hejazi S Ahmadi A 《Journal of injury & violence research》2012,4(2):98-100
Ventricular Septal Defect (VSD) after blunt chest trauma is a very rare traumatic affection. We report here a case of blunt chest injury-related VSD and pseudoaneurysm. A 30-year old male truck driver was referred from a trauma center to our hospital seven days after a blunt chest trauma and rib fracture. The patient had severe pulmonary edema and echocardiography showed large VSD. Several mechanisms are involved in the pathogenesis of this affection including an acute compression of the heart muscle between the sternum and the spine, leading to excessive changes in the intrathoracic and most likely the intracardiac pressure after blunt chest injury. Traumatical patients with the same symptoms may be at risk of sudden death. Therefore, a high grade of suspicion is mandatory even without solid evidence of myocardial damage on the initial evaluation. In continue some hidden angles of this case was discussed. Given the prognostic implications of traumatic VSD with associated pseudoaneurysm, its detection has critical value for preventing its clinical sequelae. 相似文献
954.
955.
The number of the homeless people in Istanbul, one of the largest cities in the world, is at present unknown. There has been no previous study in Turkey on cases and causes of death occurring among these individuals. In this paper, documents and autopsy reports of the Mortuary Section of the Council of Forensic Medicine, Istanbul, covering the period January 1st, 1991-December 31st, 1995, were reviewed. We established that there were 126 cases of death among homeless individuals in Istanbul during this period, 120 of them being males (95%), four (3%) females, and two (2%) transsexuals. Ninety-four corpses were found outdoors, 32 indoors. No personal documents, such as identity cards, were found in 110 individuals (87%), whereas only 16 individuals could be identified. Most deaths occurred in the age group of 41-50 years. One hundred and three of the cases (82%) died in the cold season between October and April. The deaths of 98 cases were attributable to natural causes, whereas the remaining 28 cases died from unnatural causes. Respiratory tract diseases occupied the first rank among cases of death from natural causes (44%). Alcohol abuse and other infections were further striking factors contributing to the fatal outcome. This is the first retrospective study on this topic in Turkey. However, more detailed and anterospectively programmed studies on this subject, a growing social problem, should be carried out. 相似文献
956.
An ingestion of an unknown quantity of Ivadal (zolpidem) tablets in a case of drug abuse is described. The authors report a new and fast method of analysing and determining the zolpidem concentration in postmortem specimens. Quantitation of zolpidem was performed by ethyl acetate extraction from alkalinized body fluids before GC/MS analysis. The analyses were performed without any complex sample clean-up steps and with little sample material. Postmortem concentrations of zolpidem in body fluids are given. The proposed method is a rapid procedure of analysis in cases of deliberate poisoning with the sedative-hypnotic drug, zolpidem. 相似文献
957.
Seric carbohydrate-deficient transferrin (CDT) is a biochemical marker of chronic alcohol abuse. Assessment of the influence of factors likely to modify CDT concentration is necessary to justify its use in the analysis of post-mortem blood samples. Hemolysis, site of collection and storage were tested. Hemolysed samples showed decreased CDT concentration. Statistical analysis of CDT concentration in cardiac blood versus femoral blood revealed no significant differences. Storage for fifteen days at +4 degrees C or +20 degrees C did not affect CDT concentration but repeated freezing and thawing resulted in decreased levels of CDT. 相似文献
958.
959.
960.