首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   46篇
  免费   4篇
各国政治   1篇
世界政治   3篇
外交国际关系   1篇
法律   39篇
政治理论   6篇
  2019年   1篇
  2018年   3篇
  2017年   3篇
  2013年   3篇
  2011年   2篇
  2009年   1篇
  2008年   2篇
  2007年   2篇
  2006年   1篇
  2004年   3篇
  2002年   2篇
  2001年   3篇
  2000年   3篇
  1999年   4篇
  1995年   1篇
  1991年   1篇
  1990年   2篇
  1989年   1篇
  1988年   2篇
  1987年   2篇
  1986年   2篇
  1983年   1篇
  1982年   1篇
  1979年   1篇
  1974年   2篇
  1972年   1篇
排序方式: 共有50条查询结果,搜索用时 78 毫秒
1.
New York State experimented with replacing their litigation-oriented system for achieving toxic dump site cleanup with one promising to lower transaction costs through alternative dispute resolution. Our analysis of outcomes is informed by three generations of implementation work focusing on (1) the motivations and incentives shaping individual behavior, (2) the larger organizational and political factors associated with variation across cases, and (3) the generic properties of policy implements. This mosaic approach to explanation produces, we believe, a more lifelike picture of use to policy makers for understanding the dynamic and interrelated nature of their choices.  相似文献   
2.
A blood group substance (BGS), a protein with ABH antigenic activity, was isolated from human seminal plasma and designated as p 84 (Sato, 1995). We have developed a method for determining the ABO blood type of semen by performing a sandwich enzyme-linked immunosorbent assay (ELISA) in which p 84 is captured with an anti-p 84 monoclonal antibody, and evaluated the specificity and sensitivity of this method. Although BGS activity was detected in semen sensitively by this method, it was not detected in saliva, urine, breast milk, blood or vaginal secretions. Since the concentration of p 84 in semen was independent of the secretion status, the status can be determined as non-secretor when p 84 but not BGS activity was detected. To determine the stability of BGS activity on p 84, dried stains of semen on filter paper were kept at 4, 26, and 37 degrees C for 8 months, 2 years and 1 month, respectively, and their BGS activities were examined. After 8 months at 4 degrees C, over 60% of the original BGS activity was recovered from the stain. The activity could be detected even from a square as small as 0.25 by 0.25 cm. After 1 month at 37 degrees C and 2 years at 26 degrees C, 31 and 20% of the BGS activity, respectively, still remained. It could be detected from the pieces of 1.0 by 1.0 cm and 0.5 by 0.5 cm squares, kept for 1 month at 37 degrees C and 2 years at 26 degrees C, respectively. Finally, semen was mixed with saliva or blood at varying volumetric ratios and used for the sources of dried stains. The BGS activity of p 84 could be detected in the stains until the ratio between semen and saliva or blood reached 1:4. We conclude that this sandwich ELISA offers a more sensitive and specific method for determining the ABO blood type of semen samples obtained from sexual assault victims than existing methods, such as the conventional absorption-elution and classical hemagglutination-inhibition tests.  相似文献   
3.
4.
An attempt was made to discriminate among six species of Papaver (P. bracteatum, P. orientale, P. pseudo-orientale, P. rhoeas, P. setigerum and P. somniferum) by comparing the nucleotide sequences of the plastid rpl16 gene and the rpl16-rpl14 spacer region. Comparison of sequences allowed us to distinguish five species, namely P. bracteatum, P. orientale, P. pseudo-orientale, P. rhoeas and P. setigerum plus P. somniferum from one another, but sequences from P. setigerum and P. somniferum were identical. It is difficult to distinguish between P. bracteatum, P. orientale and P. pseudo-orientale at the vegetative stage of growth. However, our method allowed us to distinguish between these three species and the others using nucleotide sequences and should allow identification of P. bracteatum that has been cultivated illegally in the garden in Japan. Furthermore, P. rhoeas was clearly discriminated from P. setigerum and P. somniferum by reference to the sequence of the rpl16 exon using young seedlings.  相似文献   
5.
Posttraumatic thrombosis of the middle cerebral artery   总被引:6,自引:0,他引:6  
Posttraumatic cerebral infarction resulting from carotid or cerebral artery occlusion is rare. Traumatic dissection of the carotid artery is the most frequent cause of infarction, whereas posttraumatic thrombosis of the cerebral artery is very rare. The authors describe a case of posttraumatic thrombosis of the left middle cerebral artery. Early in the morning, a 16-year-old boy was found unconscious in the parking lot of a supermarket. He had received fist blows and kicks to the head, face, body, back, and hip during the night. Computed tomography 10 hours after the violence revealed a gross cerebral infarction in the area of the left middle cerebral artery. He died 9 days after the violence. The autopsy revealed a thrombosis in the left middle cerebral artery. Microscopically, granulation tissue in the intima and a rupture of the internal elastic lamina were observed near the beginning of the artery. It was concluded that the blows to the head and face caused a partial rupture in the arterial wall, leading to thrombosis and cerebral infarction.  相似文献   
6.
7.
Facial reconstruction techniques used in forensic anthropology require knowledge of the facial soft tissue thickness of each race if facial features are to be reconstructed correctly. If this is inaccurate, so also will be the reconstructed face. Knowledge of differences by age and sex are also required. Therefore, when unknown human skeletal remains are found, the forensic anthropologist investigates for race, sex, and age, and for other variables of relevance. Cephalometric X-ray images of living persons can help to provide this information. They give an approximately 10% enlargement from true size and can demonstrate the relationship between soft and hard tissue. In the present study, facial soft tissue thickness in Japanese children was measured at 12 anthropological points using X-ray cephalometry in order to establish a database for facial soft tissue thickness. This study of both boys and girls, aged from 6 to 18 years, follows a previous study of Japanese female children only, and focuses on facial soft tissue thickness in only one skeletal type. Sex differences in thickness of tissue were found from 12 years of age upwards. The study provides more detailed and accurate measurements than past reports of facial soft tissue thickness, and reveals the uniqueness of the Japanese child's facial profile.  相似文献   
8.
When a body is discovered in water, it is difficult to conclude whether the cause of death was drowning, even today. Although diatom testing by the digestive method is classical, we hypothesized that aquatic bacteria, as well as diatoms, might be detected in drowned bodies, and conducted temperature gradient gel electrophoresis (TGGE)‐targeting 16S rDNA. DNA was extracted from the site water, and from heart blood and liver samples from 27 bodies concluded as drowning deaths by autopsy and subjected to TGGE after amplification of 16S rDNA by polymerase chain reaction. We observed whether the feature point of each 16S rDNA from the site water and blood or liver samples matched. Considerably higher correspondence was observed in drowned bodies, and the rate was higher than that achieved with the digestive method. Moreover, TGGE is safer than the digestive method. Our study suggests that this method can aid diagnosis of drowning.  相似文献   
9.
Former prisoners have a higher than expected risk of death following release from incarceration. However, little is known about the specific risk factors for post-release mortality among former prisoners. The current study uses a unique set of measures obtained from administrative records from Pennsylvania to examine demographic, custodial, behavioral, and criminal history factors that impact mortality risk following release from incarceration. Moreover, this study is the first to assess whether risk factors for post-release mortality are consistent or variable across race and ethnicity. Using data from the Pennsylvania Department of Corrections and mortality records from the Pennsylvania Department of Health we find several demographic, custodial, behavioral, and criminal history measures are related to post-release mortality risk. Moreover, while most risk factors for mortality are generally consistent across race and ethnicity, we find evidence that some custodial and criminal history factors vary by race and ethnicity.  相似文献   
10.
Abstract

This article examines the increased linkage between domestic and foreign policy that has been a consequence of democratization and globalization in Korea. It argues that while prior to 1987 foreign policy-making saw very little public input, and while democratization did not lead to a weakening of domestic political institutions nor a rise in nationalism, it did open up domestic political space where foreign policy-making increasingly became part of the contentious electoral competition. The globalization policy, initiated with the purpose of raising Korea's international status, which has remained a goal of succeeding administrations, created a complex interdependency which led to a breakdown in the separation between the domestic and international, and that often brought with it a domestic backlash. As a consequence foreign policy-making, in the absence of a tradition of political compromise, increasingly runs the risk of either inconsistency, or even deadlock.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号