全文获取类型
收费全文 | 4794篇 |
免费 | 166篇 |
专业分类
各国政治 | 235篇 |
工人农民 | 185篇 |
世界政治 | 342篇 |
外交国际关系 | 128篇 |
法律 | 3023篇 |
中国共产党 | 1篇 |
中国政治 | 28篇 |
政治理论 | 987篇 |
综合类 | 31篇 |
出版年
2020年 | 61篇 |
2019年 | 68篇 |
2018年 | 86篇 |
2017年 | 104篇 |
2016年 | 104篇 |
2015年 | 94篇 |
2014年 | 89篇 |
2013年 | 497篇 |
2012年 | 131篇 |
2011年 | 121篇 |
2010年 | 107篇 |
2009年 | 104篇 |
2008年 | 134篇 |
2007年 | 133篇 |
2006年 | 127篇 |
2005年 | 123篇 |
2004年 | 128篇 |
2003年 | 124篇 |
2002年 | 116篇 |
2001年 | 186篇 |
2000年 | 172篇 |
1999年 | 128篇 |
1998年 | 68篇 |
1997年 | 52篇 |
1996年 | 43篇 |
1995年 | 56篇 |
1994年 | 52篇 |
1993年 | 47篇 |
1992年 | 91篇 |
1991年 | 88篇 |
1990年 | 107篇 |
1989年 | 87篇 |
1988年 | 83篇 |
1987年 | 83篇 |
1986年 | 106篇 |
1985年 | 109篇 |
1984年 | 76篇 |
1983年 | 79篇 |
1982年 | 50篇 |
1981年 | 47篇 |
1980年 | 44篇 |
1979年 | 48篇 |
1978年 | 55篇 |
1976年 | 35篇 |
1975年 | 46篇 |
1974年 | 61篇 |
1973年 | 55篇 |
1972年 | 42篇 |
1970年 | 34篇 |
1969年 | 41篇 |
排序方式: 共有4960条查询结果,搜索用时 15 毫秒
271.
Physicians who engage in sexual conduct with patients usually cause serious harm and have a high rate of recidivism. Although offending physicians may lose their privilege to practice, they have the right to appeal for restoration of the license. Yet medical licensing board members do not currently have any clear standards by which to predict whether a given physician is likely to abuse again. Using New York as a paradigm, this paper offers practical, clinically based guidelines for assessing the risk of restoring an offending physician's license. These guidelines are derived from psychoanalytic theories of character, the insights of therapists who have worked with abusive physicians, and the psychiatric model of assessing dangerousness. Recognizing character patterns and psychological vulnerabilities of physicians with histories of sexual misconduct will help board members identify those who are at high risk of abusing again if their licenses are restored. 相似文献
272.
Marc B Baudry F Douceron H Ghaith A Wepierre JL Garnier M 《Journal of forensic sciences》2000,45(1):216-222
Three cases of suicide by electrocution with low-voltage current were observed in five years (1994-1998) by medical clinical forensic examiners of an Emergency Forensic Unit of the Paris suburb among 2,000 external death examinations. The cases involved one woman, aged 72 and two men, aged 38 and 41. In the last two cases, electric burns were retrieved under bared electric wires, placed on the arms or fingers in order to realize a hand-to-hand electric circuit involving the heart muscle. In the other case, the electric circuit between mouth and foot also involved the heart muscle. Household low-voltage current delivered (220 V in France) had a sufficient strength to induce local muscular paralysis and heart fibrillation. In the three cases, blood samples taken have retrieved very high levels of muscular enzymes (CPK, LDH) correlated to the mechanism of electric death. The rareness of suicide by electrocution and its forensic characteristics are detailed in order to help the clinical forensic examiners, prosecutors, and police officers concerned by such death examinations. 相似文献
273.
274.
ElSohly MA Ross SA Mehmedic Z Arafat R Yi B Banahan BF 《Journal of forensic sciences》2000,45(1):24-30
The analysis of 35,312 cannabis preparations confiscated in the USA over a period of 18 years for delta-9-tetrahydrocannabinol (delta9-THC) and other major cannabinoids is reported. Samples were identified as cannabis, hashish, or hash oil. Cannabis samples were further subdivided into marijuana (loose material, kilobricks and buds), sinsemilla, Thai sticks and ditchweed. The data showed that more than 82% of all confiscated samples were in the marijuana category for every year except 1980 (61%) and 1981 (75%). The potency (concentration of delta9-THC) of marijuana samples rose from less than 1.5% in 1980 to approximately 3.3% in 1983 and 1984, then fluctuated around 3% till 1992. Since 1992, the potency of confiscated marijuana samples has continuously risen, going from 3.1% in 1992 to 4.2% in 1997. The average concentration of delta9-THC in all cannabis samples showed a gradual rise from 3% in 1991 to 4.47% in 1997. Hashish and hash oil, on the other hand, showed no specific potency trends. Other major cannabinoids [cannabidiol (CBD), cannabinol (CBN), and cannabichromene (CBC)] showed no significant change in their concentration over the years. 相似文献
275.
276.
277.
Forensic medical significance of anti-P1 immunoreagents with incomplete antibodies in blood analysis
Anti-P1 immunoreagents with incomplete antibodies are intended for detection of antigen of different degree of manifestation in blood traces during expert evaluation of material evidences by the adsorption-elution test. These reagents can be used for detecting weakly manifest P1 antigen in liquid blood in forensic medical studies. 相似文献
278.
Campman SC Holmes JF Sokolove PE Romero JA Yost BA Lie JT 《The American journal of forensic medicine and pathology》2000,21(1):69-73
Arterial fibromuscular dysplasia (FMD) represents a collection of noninflammatory and nonatherosclerotic vascular diseases with a poorly understood etiology. Classically occurring in renal and cerebral arteries, this entity has also been reported in coronary, carotid, and other medium and small arteries. One case occurring in the pulmonary vasculature has been reported. Fatal hemothorax and lung hemorrhage have multiple causes, including other vascular malformations and connective tissue disorders; however, cases of pulmonary FMD are exceedingly rare. We report what appears to be the second such association, occurring in a 69-year-old man. The patient presented with a 3-week history of increasing dyspnea, fatigue, and productive cough; 3 days of increasing back and chest pain; and syncope. Chest radiograph showed a "white-out" of the left lung. The patient died shortly after admission from a fulminant respiratory disease of undetermined etiology. At autopsy he was found to have a massive left hemothorax resulting from an unsuspected pulmonary arterial fibromuscular dysplasia. 相似文献
279.
Mallak CT Milch KS Horn DF 《The American journal of forensic medicine and pathology》2000,21(1):79-82
The diagnosis of sudden infant death syndrome (SIDS) has been an enigma to medical examiners and coroners for decades. The recent drastic decrease in the number of SIDS cases has been associated with infants sleeping supine instead of prone. The apparent relation between sleeping position and SIDS has led to the marketing of several positioning sleep aids. We report a case of the improper use of one such device which resulted in the death of an infant. 相似文献
280.
Vogel JS Parker JR Jordan FB Coury TL Vernino AR 《The American journal of forensic medicine and pathology》2000,21(3):264-269
The authors report a fatal case of a Persian leopard (Panthera pardus) attack in an animal sanctuary in Oklahoma. The victim was a 53-year-old Costa Rican woman who was attempting to feed the animal when she was attacked and killed. Autopsy, radiography, fingerprint analysis, microbiologic cultures, and dental impressions were used to evaluate the case. These simple techniques can be applied to similar cases involving wild and domestic animal attacks. 相似文献