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Karolina Nowak M.Sc. Paweł Szpot Ph.D. Marcin Zawadzki Ph.D. 《Journal of forensic sciences》2020,65(5):1784-1790
We present results of our study on the stability of 4-chloromethcathinone (4-CMC) in authentic postmortem peripheral blood and vitreous humor samples. The stability of 4-CMC was determined in postmortem blood samples (for a period of 90 days) and vitreous humor (30 days) at three different temperatures: −15°C, +4°C, and + 23°C. The analyses were carried out using ultra-high-performance liquid chromatography coupled with triple-quadrupole tandem mass spectrometry (UHPLC-QqQ-MS/MS). In both materials, the lowest 4-CMC stability was demonstrated at room temperature. The blood samples stored in a freezer (−15°C) showed stability for the entire study period (90 days), while in the case of the vitreous humor sample stored at the same temperature the concentration of the substance decreased by 53% after 30 days. The study carried out in authentic postmortem blood and vitreous humor samples confirms the previous reports of 4-CMC instability in biological material. Authors suggest that the biological material should be stored frozen until analyses are carried out as soon as possible after collection of the material. 相似文献
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Anna Wylegała 《Nationalities Papers》2017,45(5):780-797
This article analyzes the status of difficult historic events in Ukrainian collective memory. Difficult elements of collective memory are defined as those which divide society on basic matters, such as identity and national cohesion, and events which are being actively forgotten because of the role of Ukrainians as perpetrators. Three such issues were analyzed: World War II and the role of the Ukrainian Insurgent Army (UPA), the Holocaust, and the ethnic purge of Poles in Volhynia and Eastern Galicia in 1943–1945. Utilizing data from quantitative and qualitative studies, the author showcases the significance of these issues for contemporary Ukrainian identity and Ukraine’s relations with its neighbors. In particular, the evaluation of World War II and the role of the UPA in Ukrainian history polarizes Ukrainian society to a great degree. At the same time, this element of national history is used to construct a common, anti-Russian identity. The difficulty of relating to the memory of the Holocaust and the ethnic purge in Volhynia is of a different character. These events are problematic for Ukrainian collective memory because they demand a painful settling of accounts with the past. At present, only Ukrainian elites are willing to work on these subjects, and only to a limited degree, while the common consciousness either denies or ignores them altogether. 相似文献
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ABSTRACTThe efforts undertaken to establish the contemporary European Union started many years earlier. The history of establishing a pan-European organization is interesting not only for historians and economists but also translators and linguists as it is the history of interlingual communication (negotiations and agreements). One such negotiation was allegedly ineffective due to the difference in understanding the French term engagement and its English equivalent employed by translators and interpreters, that is to say the English term commitment. The authors aim at presenting the political background of negotiations and the social semiotic analysis of the terms in question in order to provoke the reader to find the answer to the question whether the negotiation was broken due to interlingual miscommunication resulting from erroneously chosen equivalent or it was destined to failure from the very beginning due to socio-political and economic interests of negotiating parties. In order to achieve that goal, the authors have analysed notes exchanged between the governments of France and Great Britain in course of negotiation. The history of negotiation and the linguistic analysis are combined to illustrate the complexity of meaning construction and the semiotic implications of the contextual dependence of meanings of terms and their dynamic evolution in time and space. 相似文献
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Rafał Lisiakiewicz 《Communist and Post》2018,51(2):113-123
This article examines the problem of contemporary bilateral relations between Poland and Russia. Its thesis largely attributes the rivalry of these two states in Eastern Europe to conceptions relating to the balancing and bandwagoning of power. This rivalry can be put down to the fact that Polish-Russian relations are being developed within broader global processes such as Russia's relations with NATO, the USA and European Union. The greatest obstacle to the maintenance of mutually beneficial relations is the sensitive issue of security. In recent years Poland has consistently underlined its willingness to reinforce NATO's mutual defense mechanisms by supporting the organization's continued presence in Central-Eastern Europe. This issue has been compounded by Poland's striving to bring the countries of Eastern Europe (especially Ukraine) into closer affiliation with Western institutions favoring European integration, which is evidently perceived as interference in what is regarded by Moscow to be a sphere of Russian influence. This has provoked a number of serious crises in bilateral relations between Poland and Russia since the Euro-Maidan Revolution in Ukraine. Russian plans to install new (Iskander) missile systems close to the Polish border and Poland's effective attempts post-2014 to extend NATO presence within its own country testify to the scale of conflicts of interest between the two states and the lack of trust afforded by both sides. The issues highlighted in this paper are of great importance, since they not only enable the complexity of Central European issues to be more fully comprehended but also help to elucidate other global actors' conceptions relating to cooperation with Europe. 相似文献
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Allele frequency data and forensic efficiency parameters for 10 STR loci: D3S1358, vWA, D16S539, D2S1338, D8S1179, D21S11, D18S51, D19S433, TH01 and FGA, were estimated from a sample of 207 unrelated individuals in Lodz region of Poland. 相似文献
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Allele and haplotype frequencies of nine Y-chromosome STR loci were determined from a sample of 508 unrelated males from north Poland. Three samples containing insertion polymorphism DYS19 (duplication) and DYS385I/II (triplications) were observed. 相似文献
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The easily available "legal highs", which are products containing psychoactive substances, such as cathinones, piperazines and synthetic cannabinoids, are abused by adolescents in Poland and in the world as alternatives to classic drugs, such as amphetamines or marijuana. The majority of these potentially dangerous substances are still legal and they are associated with a risk of severe poisoning or even death, and provide new challenges in clinical and forensic toxicological practice. Investigations in the field of "designer drugs" may be well illustrated by the case of a suicide of a 21-year old male who ingested a specified dose of a preparation called "Amphi-bi-a" that contains bk-MBDB, chemically 2-methylamino-1-(3,4-methylenedioxyphenyl) butan-1-one, which belongs to the cathinone group, as a synthetic euphoric empathogen and psychoactive stimulant that is chemically similar to MDMA. It is one of more common components of "legal highs" examined in Poland and other countries. The documentation of the case includes a clinical assessment of the patient's health status performed during his almost 4-h hospitalization before death, autopsy and histological examinations supported by toxicological findings revealing bk-MBDB at extremely high concentrations (at 20mg/l in the blood and 33mg/kg in the liver); hence, this body of evidence contributes to knowledge in the field of "designer drugs". Inventions of designers of new psychoactive xenobiotics, which are much in demand, especially in view of the dynamic Internet marketing, which drums up narcobusiness, must be balanced by a national strategy developed by medical, legal and educational circles in the modern civilized world in order to prevent the spreading of the phenomenon. 相似文献