全文获取类型
收费全文 | 519篇 |
免费 | 34篇 |
专业分类
各国政治 | 31篇 |
工人农民 | 46篇 |
世界政治 | 29篇 |
外交国际关系 | 68篇 |
法律 | 238篇 |
中国政治 | 7篇 |
政治理论 | 131篇 |
综合类 | 3篇 |
出版年
2024年 | 6篇 |
2023年 | 36篇 |
2022年 | 2篇 |
2021年 | 15篇 |
2020年 | 18篇 |
2019年 | 21篇 |
2018年 | 32篇 |
2017年 | 36篇 |
2016年 | 35篇 |
2015年 | 25篇 |
2014年 | 22篇 |
2013年 | 89篇 |
2012年 | 20篇 |
2011年 | 27篇 |
2010年 | 11篇 |
2009年 | 13篇 |
2008年 | 13篇 |
2007年 | 16篇 |
2006年 | 10篇 |
2005年 | 7篇 |
2004年 | 15篇 |
2003年 | 6篇 |
2002年 | 4篇 |
2001年 | 6篇 |
2000年 | 8篇 |
1999年 | 4篇 |
1998年 | 6篇 |
1997年 | 2篇 |
1996年 | 6篇 |
1995年 | 6篇 |
1994年 | 2篇 |
1993年 | 2篇 |
1992年 | 4篇 |
1991年 | 4篇 |
1990年 | 3篇 |
1989年 | 2篇 |
1988年 | 3篇 |
1987年 | 3篇 |
1986年 | 2篇 |
1983年 | 3篇 |
1982年 | 2篇 |
1980年 | 1篇 |
1978年 | 3篇 |
1970年 | 1篇 |
1967年 | 1篇 |
排序方式: 共有553条查询结果,搜索用时 218 毫秒
61.
Richard C. Harruff MD PhD Nicole A. Yarid MD William L. Barbour BS Yang H. Martin MS 《Journal of forensic sciences》2023,68(5):1632-1642
As the overdose epidemic overwhelmed medicolegal death investigation offices and toxicology laboratories, the King County Medical Examiner's Office responded with “real-time” fatal overdose surveillance to expedite death certification and information dissemination through assembling a team including a dedicated medicolegal death investigator, an information coordinator, and student interns. In-house testing of blood, urine, and drug evidence from scenes was performed using equipment and supplies purchased for surveillance. Collaboration with state laboratories allowed validation. Applied forensic epidemiology accelerated data dissemination. From 2010 to 2022, the epidemic claimed 5815 lives in King County; the last 4 years accounted for 47% of those deaths. After initiating the surveillance project, in-house testing was performed on blood from 2836 decedents, urine from 2807, and 4238 drug evidence items from 1775 death scenes. Time to complete death certificates decreased from weeks to months to hours to days. Overdose-specific information was distributed weekly to a network of law enforcement and public health agencies. As the surveillance project tracked the epidemic, fentanyl and methamphetamine became dominant and were associated with other indicators of social deterioration. In 2022, fentanyl was involved in 68% of 1021 overdose deaths. Homeless deaths increased sixfold; in 2022, 67% of 311 homeless deaths were due to overdose; fentanyl was involved in 49% and methamphetamine in 44%. Homicides increased 250%; in 2021, methamphetamine was positive in 35% of 149 homicides. The results are relevant to the value of rapid surveillance, its impact on standard operations, selection of cases requiring autopsy, and collaboration with other agencies in overdose prevention. 相似文献
62.
Michael T. Truver PhD Michele M. Crosby PhD Alex T. Gillette MS Sara C. Brogan BS Jennifer L. Hoyer MS Chris W. Chronister PhD Wilson A. Broussard MD Russell S. Vega MD Bruce A. Goldberger PhD 《Journal of forensic sciences》2023,68(4):1419-1424
Novel synthetic opioids contribute considerably to the opioid epidemic, especially with the frequent emergence of structurally similar compounds. This case report describes a fatal intoxication involving 2-methyl AP-237. A 54-year-old Caucasian male was found deceased from an apparent drug overdose. A plastic container labeled “2MAP” and a cut straw were found in the decedent's backpack at the scene. A white substance found in the container tested positive for fentanyl by field testing. According to his medical history, the decedent was treated for a drug overdose 3 years prior to his death. With no diagnostic findings at autopsy, the case was submitted for toxicological analysis. An unknown substance was detected in peripheral blood and urine using gas chromatography with nitrogen phosphorous detection (GC-NPD). Further testing was conducted using gas chromatography–mass spectrometry (GC–MS) and liquid chromatography-quadrupole-time-of-flight mass spectrometry (LC-QTOF-MS) which confirmed the presence of 2-methyl AP-237 and potential metabolites in blood and urine. Quantitation by GC-NPD revealed concentrations of 2-methyl AP-237 in blood and urine at 480 ng/mL and 4200 ng/mL, respectively. The toxicological analysis also identified and quantitated alprazolam in the blood at 55 ng/mL. Additionally, the metabolism of 2-methyl AP-237 was investigated and three hydroxylated metabolites were identified in peripheral blood and urine. Limited literature is available for the detection and quantitation of 2-methyl AP-237 in postmortem specimens. Given the toxicological findings with unremarkable autopsy findings, this case is an example of a fatal intoxication involving 2-methyl AP-237. 相似文献
63.
Christopher J. Katilie BS Lauryn E. DeGreeff PhD Caitlin E. Sharpes MS Eric M. Best PhD Patricia E. Buckley PhD Jenna D. Gadberry BS Michele N. Maughan PhD 《Journal of forensic sciences》2023,68(6):2021-2036
While canines are most commonly trained to detect traditional explosives, such as nitroaromatics and smokeless powders, homemade explosives (HMEs), such as fuel–oxidizer mixtures, are arguably a greater threat. As such, it is imperative that canines are sufficiently trained in the detection of such HMEs. The training aid delivery device (TADD) is a primary containment device that has been used to house HMEs and HME components for canine detection training purposes. This research assesses the odor release from HME components, ammonium nitrate (AN), urea nitrate (UN), and potassium chlorate (PC), housed in TADDs. Canine odor recognition tests (ORTs) were used with analytical data to determine the detectability of TADDs containing AN, UN, or PC. Headspace analysis by gas chromatography/mass spectrometry (GC/MS) with solid-phase microextraction (SPME) or online cryotrapping were used to measure ammonia or chlorine, as well as other unwanted odorants, emanating from bulk AN, UN, and PC in TADDs over 28 weeks. The analytical data showed variation in the amount of ammonia and chlorine over time, with ammonia from AN and UN decreasing slowly over time and the abundance of chlorine from PC TADDs dependent on the frequency of exposure to ambient air. Even with these variations in odor abundance, canines previously trained to detect bulk explosive HME components were able to detect all three targets in glass and plastic TADDs for at least 18 months after loading. Detection proficiency ranged from 64% to 100% and was not found to be dependent on either age of material. 相似文献
64.
Fabiana de Moura MS Mariana C. C. Diniz BS Yuri Machado PhD Cláudia D. R. Ricoy BS Evandro Piccin PhD 《Journal of forensic sciences》2023,68(4):1198-1205
This work presents a data survey regarding the qualitative chemical analysis of drugs seized by the Police in the state of Minas Gerais between July 2017 and June 2022, including an evaluation of labeling of 265 samples of anabolic androgenic steroids (AAS) seized in 2020. The Active Pharmaceutical Ingredients (API) present in the samples were identified through chemical analysis and classified by system Anatomical Therapeutic Chemical (ATC) methods. Analysis of the labeling information for 265 samples of AAS followed the guidance of legislation RDC 71 (2009) from ANVISA. For this study 6355 seized pharmaceuticals underwent qualitative chemical analysis that corresponded to 7739 APIs successfully identified and classified. Among the components studied AAS, psychostimulants, anesthetics, and analgesics were the most commonly examined. AAS seized and tested increased by over 100% and for the majority of the samples analyzed were found to not match the labeling on the packaging. In the meantime, anti-obesity drugs presented a prominent increase of 400% from 2020/1 to 2021/2, during covid-19 quarantine. Seized pharmaceuticals and tests can support information in the planning of public health and safety policies. 相似文献
65.
Evan Ryan 《Family Court Review》2023,61(3):650-664
Cryptocurrency has become the new hot investment for young investors. Everyone wants to get in on the next cryptocurrency bubble, and there are those that want to exploit this excitement and exploit children. Influencers who have young audiences are pushing cryptocurrency investments onto their audiences and not fully educating them on the risks. To avoid this exploitation, The Securities and Exchange Commission should actively regulate decentralized exchanges where children purchase cryptocurrency, put age limit regulations into place, and require know your customer systems to verify that minors are not purchasing cryptocurrency without the consent of a guardian. 相似文献
66.
According to a growing tradition in International Relations, one way governments can credibly signal their intentions in foreign policy crises is by creating domestic audience costs: leaders can tie their hands by publicly threatening to use force since domestic publics punish leaders who say one thing and do another. We argue here that there are actually two logics of audience costs: audiences can punish leaders both for being inconsistent (the traditional audience cost), and for threatening to use force in the first place (a belligerence cost). We employ an experiment that disentangles these two rationales, and turn to a series of dispositional characteristics from political psychology to bring the audience into audience cost theory. Our results suggest that traditional audience cost experiments may overestimate how much people care about inconsistency, and that the logic of audience costs (and the implications for crisis bargaining) varies considerably with the leader's constituency. 相似文献
67.
Ryan Gunderson 《Critical Horizons》2016,17(3-4):376-389
Consumer society has negated Freud's thesis presented in Civilization and its Discontents. The hindrance of desire affirmation is no longer the foundation of discontent. The inverse is now true. A seemingly limitless number of desires have been manufactured and administered with a solitary route to their affirmation via consumption. Because of this, consumer society's members find themselves in a lifeworld of aimless striving, dissatisfaction, disappointment and boredom. I demonstrate that the attempt to flee the sufferings of estranged labour through consumption has pushed consumer society into a new web of suffering brought on by a continual development of manufactured desires, creating a minor yet perpetual pain that is best understood in the light of a sociologized and historicized Schopenhauerian philosophy. 相似文献
68.
They Sell Skulls Online?! A Review of Internet Sales of Human Skulls on eBay and the Laws in Place to Restrict Sales 下载免费PDF全文
Christine L. Halling M.S. Ryan M. Seidemann M.A. J.D. 《Journal of forensic sciences》2016,61(5):1322-1326
Internet sales of human remains occur despite the existence of laws prohibiting such action in most jurisdictions. The most popular public platform for online sales, eBay, allows users to postskeletal material for sale, largely anonymously and without much fear of legal repercussions. This survey of skeletal sales was conducted 10 years after the first article published about online human remains sales. A review of current laws reveals that, while many states have laws that restrict any sale of human remains, those laws have questionable deterrent effect. Assessing the skeletal material posted for sale provides law enforcement agencies with a necessary starting point to curtail the sale of human remains through enforcement of existing laws. Ultimately, the goal is to stem the commodification of such items and to recover skeletal material, especially that which may be of archaeological or forensic significance, and provide the proper final disposition for such material. 相似文献
69.
European Journal of Law and Economics - Since the United States Supreme Court laid the foundation for “stop-and-frisk” activity by police departments, a substantial amount of research... 相似文献
70.