全文获取类型
收费全文 | 395篇 |
免费 | 81篇 |
专业分类
各国政治 | 1篇 |
外交国际关系 | 9篇 |
法律 | 449篇 |
中国政治 | 3篇 |
政治理论 | 5篇 |
综合类 | 9篇 |
出版年
2023年 | 11篇 |
2022年 | 7篇 |
2021年 | 8篇 |
2020年 | 39篇 |
2019年 | 18篇 |
2018年 | 13篇 |
2017年 | 27篇 |
2016年 | 42篇 |
2015年 | 25篇 |
2014年 | 33篇 |
2013年 | 35篇 |
2012年 | 22篇 |
2011年 | 26篇 |
2010年 | 33篇 |
2009年 | 24篇 |
2008年 | 25篇 |
2007年 | 20篇 |
2006年 | 16篇 |
2005年 | 8篇 |
2004年 | 5篇 |
2003年 | 5篇 |
2002年 | 6篇 |
2001年 | 5篇 |
2000年 | 5篇 |
1999年 | 2篇 |
1998年 | 1篇 |
1997年 | 2篇 |
1996年 | 1篇 |
1995年 | 2篇 |
1994年 | 2篇 |
1993年 | 1篇 |
1990年 | 1篇 |
1989年 | 1篇 |
1988年 | 1篇 |
1985年 | 2篇 |
1984年 | 1篇 |
1983年 | 1篇 |
排序方式: 共有476条查询结果,搜索用时 15 毫秒
201.
目的对比观察苏木素-碱性复红-苦味酸染色(HBFP染色)、变色酸2R-亮绿染色和Heidenhain染色在急性心肌梗死死后诊断中的应用价值。方法以大鼠急性心肌梗死模型、法医检案急性心肌梗死心脏标本作为研究对象,采用HBFP染色、变色酸2R-亮绿染色和Heidenhain染色进行对比观察。结果①3种特染方法在大鼠心肌缺血15min时均可观察到阳性染色,且阳性染色面积随缺血时间的延长而扩大;②大鼠急性心肌缺血4h心脏标本在-20℃、4℃及室温条件下保存至14d,3种特染方法仍可见阳性着色,但变色酸2R-亮绿染色和HBFP染色随保存时间的延长而出现着色能力下降,阳性区域变小的趋势,Heidenhain染色效果最为稳定;③急性心肌梗死检案标本中,3种特染方法均可显示缺血心肌纤维,发病1h内死亡者Heidenhain染色优于另外两种染色。结论 3种特染均可客观的显示出急性心肌梗死早期病理改变,其中Heidenhain染色更具稳定性和可操作性。 相似文献
202.
203.
Christopher R. Day 《Terrorism and Political Violence》2013,25(5):966-986
ABSTRACTTo date, scholarly work on armed groups has seldom considered the notion of rebel resilience, or the factors that enable these groups to survive despite time, military pressure, and the myriad contingent events of civil war. In an effort to develop an explanatory framework for resilience as a distinct outcome of civil war and rebellion, this article examines the conditions under which the Lord’s Resistance Army (LRA) has persisted for nearly three decades. Based on fieldwork and original research, the article explains the LRA’s resilience in light of the group’s organizational structure and resource self-sufficiency, which have been well suited for the borderlands of East and Central Africa. The LRA is a key case of rebel resilience. It is important because it sheds light on the organizational foundations of armed groups, the relationship between resources and rebellion, and the broader study of conflict duration and termination. Understanding the sources of the LRA’s resilience can inform efforts to end such insurgencies. 相似文献
204.
目的探讨甲状腺滤泡上皮细胞平均DNA含量变化与死亡时间(PMI)的相关性。方法采用甲基绿-派洛宁(MG-P)染色法结合图像分析技术,测定尸体甲状腺滤泡上皮细胞平均DNA含量变化值,并对其数据进行统计学分析。结果甲状腺滤泡上皮细胞平均DNA含量随死后经过时间的延长而加速降解。平均DNA含量各指标(平均灰度、目标面积、目标面积比)与PMI之间的决定系数R2分别为0.960、0.987、0.988和0.990(P<0.001)。结论尸体甲状腺滤泡上皮细胞平均DNA含量与PMI之间具有明显相关性,甲基绿-派洛宁(MG-P)染色法结合图像分析技术测定在研究甲状腺滤泡上皮细胞DNA含量变化方面具有一定优势。 相似文献
205.
目的 分析不同死亡时间和死亡原因大鼠肝脏组织内磷酸果糖激酶-2(PFK-2)含量的变化.方法 大鼠105只随机分为三组,以不同方式(失血、窒息、断颈)处死.分别于死后0、1、2、4、8、12和24h取大鼠肝脏组织,免疫组化和图像分析技术测定大鼠PFK-2变化.结果 三组不同死亡原因大鼠肝脏组织内PFK-2的含量随死亡时间延长呈规律性减弱趋势.结论 大鼠肝脏组织内PFK-2的变化可以反映死亡时间的变化趋势. 相似文献
206.
207.
208.
Passive infrared technology was used to film diurnal and nocturnal scavenging behavior of brown rats and gray squirrels at the University of Tennessee's Anthropological Research Facility. This direct documentation demonstrated that brown rats modified fat-laden cancellous bone while gray squirrels generally gnawed the thicker bone cortices only after fats had leached away. A case study placed in a shaded portion of the Facility indicated the postmortem interval for initial gnawing by gray squirrels was slightly over 30 months. An examination of 53 human skeletons in the William M. Bass Forensic Skeletal Collection revealed that 10 cases had gnaw marks consistent with those made by gray squirrels. One of the 10 cases had been gnawed within 16 months of time-since-death, while the remaining nine had postmortem intervals >30 months. Additional observed modifications made to nonhuman bone by gray squirrels indicate that squirrel gnaw marks on bone can serve as a minimal estimate of time-since-death in a temperate environment similar to that of East Tennessee. 相似文献
209.
The Philadelphia Medical Examiners Office has reported a series of 15 deaths between February 1999 and June 2005 of infants and toddlers 16 months and younger in which drugs commonly found in over-the-counter (OTC) cold medications were present. A total of 10 different drugs were detected: pseudoephedrine, dextromethorphan, acetaminophen, brompheniramine, carbinoxamine, chlorpheniramine, ethanol, doxylamine and the anticonvulsants, phenobarbital, and phenytoin. The drugs were confirmed and quantified by gas chromatography (GC)-mass spectrometry, with the exception of ethanol, which was analyzed by headspace GC and of phenobarbital and phenytoin that were quantified by GC with a nitrogen phosphorus detector. The most predominant drug was pseudoephedrine, which was found in all of the cases (blood concentration, n=14, range=0.10-17.0 mg/L, mean=3.34 mg/L) and was the sole drug detected in three cases. Acetaminophen was detected in blood from each of the five cases with sufficient sample. Other drugs (with frequency of detection) were dextromethorphan (five cases), carbinoxamine (four cases), chlorpheniramine (two cases) and brompheniramine, doxylamine, and ethanol (one case each). In the majority of the cases, toxicity from drugs found in easily available OTC medications was listed either as the direct cause of death or as a contributory factor. The manner of death was determined to be natural in only two of the cases. This postmortem study supports previous evidence that the administration of OTC cold medications to infants may, under some circumstances, be an unsafe practice and in some cases may even be fatal. The treating physicians and the general public need to be made more aware of the dangers of using OTC cold medications to treat very young children so that these types of tragedies might be avoided. 相似文献
210.
3130例法医尸检资料分析 总被引:8,自引:1,他引:7
对汕头市1977年1月至1996年12月20年间3130例法医尸检资料进行统计分析,探讨其性别、年龄、季节、死因和案情性质构成,并与国内外文献比较。结果表明男性为女性的2.3倍;青壮年居多;尸检数逐年增加;损伤、窒息、粹死、中毒占2829例(92.3%),意外1226例(39.2%),他杀776例(29.8%),自杀658例(21.0%)。与广州、湖北部分地区资料相似,与日本东京、美国佛罗里达资料存在明显差异。 相似文献