全文获取类型
收费全文 | 19000篇 |
免费 | 193篇 |
专业分类
各国政治 | 729篇 |
工人农民 | 573篇 |
世界政治 | 1344篇 |
外交国际关系 | 632篇 |
法律 | 12338篇 |
中国共产党 | 1篇 |
中国政治 | 119篇 |
政治理论 | 3322篇 |
综合类 | 135篇 |
出版年
2020年 | 403篇 |
2019年 | 426篇 |
2018年 | 505篇 |
2017年 | 549篇 |
2016年 | 567篇 |
2015年 | 518篇 |
2014年 | 517篇 |
2013年 | 1831篇 |
2012年 | 399篇 |
2011年 | 500篇 |
2010年 | 650篇 |
2009年 | 611篇 |
2008年 | 422篇 |
2007年 | 398篇 |
2006年 | 522篇 |
2005年 | 381篇 |
2004年 | 363篇 |
2003年 | 375篇 |
2002年 | 336篇 |
2001年 | 618篇 |
2000年 | 498篇 |
1999年 | 435篇 |
1998年 | 240篇 |
1997年 | 216篇 |
1996年 | 177篇 |
1995年 | 200篇 |
1994年 | 213篇 |
1993年 | 203篇 |
1992年 | 315篇 |
1991年 | 369篇 |
1990年 | 323篇 |
1989年 | 353篇 |
1988年 | 323篇 |
1987年 | 307篇 |
1986年 | 323篇 |
1985年 | 363篇 |
1984年 | 342篇 |
1983年 | 314篇 |
1982年 | 244篇 |
1981年 | 219篇 |
1980年 | 207篇 |
1979年 | 232篇 |
1978年 | 163篇 |
1977年 | 137篇 |
1976年 | 132篇 |
1975年 | 131篇 |
1974年 | 146篇 |
1973年 | 129篇 |
1972年 | 111篇 |
1971年 | 102篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
961.
Accidental hypothermia has been described in the forensic literature but reports of occurrence in hospitalized patients are rare. Associated anatomic lesions include acute hemorrhagic pancreatitis and characteristic acute gastric ulcers termed Wischnewski ulcers. We report here two patients with cirrhosis and ascites; one also had hepatocellular carcinoma. Portal vein thrombosis, acute hemorrhagic pancreatitis and Wischnewski ulcers were present in both. The clinical records documented hypothermia that progressed over several days. Temperature nadirs of 31.0 degrees C (87.8 degrees F) and 32.2 degrees C (90.0 degrees F) were recorded in each patient, respectively, one day before death, although each transiently reached temperatures that did not register on standard monitoring devices. This is the first report that chronicles antemortem body temperatures in hypothermic patients with Wischnewski ulcers and pancreatitis at autopsy. Also, the association of these findings with portal vein thrombosis and cirrhosis has not been previously described. We discuss this constellation of findings with regard to possible mechanistic interrelations. 相似文献
962.
A young nurse was found dead in her flat. In chemical-toxicological analysis the following femoral blood drug concentrations were determined: paroxetine 0.176 mg/l, doxepine 82.12 mg/l, desmethyldoxepine 0.34 mg/l. Additionally the drug concentrations were determined in various body fluids and organs. The results of the described fatality are discussed. For interpretation of toxicologic results in antidepressant fatalities ratios of parent drug to metabolite and postmortem drug redistribution should be taken into account. 相似文献
963.
964.
Acetaminophen (paracetamol), a widely used analgetic drug, is well tolerated at therapeutic doses, but may cause severe hepatotoxicity when ingested in large overdose. Self-poisoning is still very popular in adults and accidental ingestion of one single overdose occurs occasionally in children. In contrast, lethal intoxication in children after repeated administration of therapeutic doses is a very rare event. This case report describes an iatrogenic acetaminophen overdosing in a 5-year-old child receiving 8.5 g acetaminophen in 48 h. Fulminant liver failure developed within 60 h. Autopsy findings included panlobular liver cell necrosis. Acetaminophen serum levels were rather low compared to cases with ingestion of one single overdose. Postmortem diagnosis of chronic acetaminophen intoxication as cause of death should include the clinical history as well as, if available, the calculated drug serum half-life. 相似文献
965.
966.
967.
968.
969.
Conk GW 《Seton Hall law review》1999,30(1):273-303
This Article is based on a presentation given at Seton Hall University School of Law's Seventh Annual Health Law Symposium on February 12, 1999. 相似文献
970.
Manton N Smith NM Byard RW 《The American journal of forensic medicine and pathology》2000,21(1):90-92
Two cases of unexpected childhood death due to hemolytic uremic syndrome are reported. A 21-month-old girl who was discovered dead in bed following a short illness was found at autopsy to have overwhelming sepsis resulting from transmural colitis. Escherichia coli serotype 0157A was isolated from the intestine, and renal changes of hemolytic uremic syndrome were found. A 4-year-old girl died suddenly in hospital from intracranial hemorrhage while being treated for hemolytic uremic syndrome-related renal failure. Culture of urine and feces grew verocytotoxin producing E. coli. These cases demonstrate that hemolytic uremic syndrome may be a rare cause of unexpected childhood death and that the diagnosis may not be established prior to autopsy. Postmortem culture of tissues and fluids in cases of suspected sepsis in children may be essential in establishing this diagnosis, because histologic evaluation may be compromised by profound sepsis and tissue putrefaction. Accuracy in diagnosis may have significant public health and medicolegal consequences. 相似文献