Search results for "kr"
showing 10 items of 7011 documents
Removing krypton from xenon by cryogenic distillation to the ppq level
2017
The XENON1T experiment aims for the direct detection of dark matter in a detector filled with 3.3 tons of liquid xenon. In order to achieve the desired sensitivity, the background induced by radioactive decays inside the detector has to be sufficiently low. One major contributor is the β-emitter 85Kr which is present in the xenon. For XENON1T a concentration of natural krypton in xenon natKr/Xe<200ppq (parts per quadrillion, 1ppq=10-15mol/mol) is required. In this work, the design, construction and test of a novel cryogenic distillation column using the common McCabe–Thiele approach is described. The system demonstrated a krypton reduction factor of 6.4 · 10 5 with thermodynamic stability a…
Predicting Cryptocurrency Defaults
2019
We examine all available 146 Proof-of-Work based cryptocurrencies that started trading prior to the end of 2014 and track their performance until December 2018. We find that about 60% of those cryptocurrencies were eventually in default. The substantial sums of money involved mean those bankruptcies will have an enormous societal impact. Employing cryptocurrency-specific data, we estimate a model based on linear discriminant analysis to predict such defaults. Our model is capable of explaining 87% of cryptocurrency bankruptcies after only one month of trading and could serve as a screening tool for investors keen to boost overall portfolio performance and avoid investing in unreliable crypt…
Vairogdziedzera vēža sastopamība pacientiem ar akromegāliju
2016
Akromegālija ir reta endokrīna saslimšana, kas raksturojas ar paaugstinātu STH un IGF-1 sekrēciju. Zināms, ka akromegālijas slimniekiem ir paaugstināts audzēju risks. 54-65% akromegālijas pacientiem ir nodoza struma. Pēc literatūras datiem 5-10% mezglu ir maligni, kas liek domāt, ka arī vairogdziedzera vēža risks akromegālijas pacientiem ir lielāks. Literatūrā ir dažādi pētījumi, kuros ir minēta cukura diabēta (CD) saistība ar audzējiem. Glikozes regulācijas traucējumi ir bieža akromegālijas blakus slimība un ir maz pētījumu par to lomu vairogdziedzera patoloģiju attīstībā. Vēl joprojām akromegālijas pacientiem tiek pētīti iespējamie audzēju attīstības mehānismi. Pētījuma mērķis ir noskaidr…
Krūts vēža saistība ar cukura diabētu
2016
Problēmas būtība: Saslimstība ar cukura diabētu, kā arī ar krūts vēzi ik gadu pieaug visā pasaulē. Pēdējo 150 gadu laikā veikti daudzi pētījumi, kas atklāj izteiktu saistību starp šīm slimībām. Ir nepieciešama detalizētāka izpēte analizējot kopējos slimību attīstības mehānismus, kā arī retrospektīvi izvērtējot krūts vēža gaitu un iznākumu pacientēm ar cukura diabētu, salīdzinājumā ar pacientēm bez cukura diabēta. Darba mērķis: noskaidrot, vai saslimstība ar cukura diabētu ietekmē krūts vēža gaitu un iznākumu, kā arī salīdzināt pētījuma rezultātus ar literatūrā pieejamajiem datiem. Darba metode: Pētījums veikts retrospektīvi analizējot medicīniskās kartes no Latvijas Onkoloģijas Centra un Pa…
Sekretorā IgA un zarnu mikrobioma mijiedarbība un dinamika antidiabētiskās terapijas laikā
2022
Metformīns ir viens no visplašāk izmantotajiem medikamentiem 2.tipa cukura diabēta (T2D) ārstēšanā. Papildus glikozes izdales samazināšanai aknās un glikozes uzņemšanas palielināšanai muskuļos, arvien vairāk pierādījumu liecina, ka zarnu mikrobioms ir metformīna galvenā darbības vieta. Jaunākie pētījumi liecina, ka metformīns būtiski maina zarnu mikrobiomu T2D pacientiem. Sekretorajam IgA ir svarīga loma zarnu, elpceļu un uroģenitālās gļotādas epitēlija aizsardzībā un homeostatiskā regulēšanā, kā arī mijiedarbībā ar mikrobiomu. Metformīna terapijas laikā tika ievākti fēču paraugi no 19 jaundiagnosticētiem T2D pacientiem (trīs laika punktos) un astoņām veselām kontrolēm (divos laika punktos)…
Studying Nonverbal Synchrony in Couple Therapy : Observing Implicit Posture and Movement Synchrony
2020
AbstractResearch on nonverbal synchrony (movement coordination) in psychotherapy has recently attracted increased attention. Nonverbal synchrony has been shown to relate to the therapeutic alliance and outcome. However, research on nonverbal synchrony in couple therapy remains scarce. In this study, we examined the therapy process of one couple in detail and created a coding scheme to depict posture and movement synchrony. In this case study, we found that the relationship between nonverbal synchrony and the therapeutic alliance was complex. During the therapy process, the amount of nonverbal synchrony varied, as did the participants’ evaluations of the alliance. In couple therapy nonverbal…
Politics of solidarity in the context of European heritage : The cases of the European Solidarity Centre and Hambach Castle
2019
This article explores the politics of solidarity in the framework of constructing a common cultural heritage of the European Union. The politics of solidarity stems from the notion of solidarity embedded to European heritage. We use critical heritage studies as a theoretical approach that understands heritage as an inherently dissonant social construct, produced by various actors according to political, economic and social interests. The study analyses empirical data from the European Heritage Label (EHL), a flagship heritage action of the EU that communicates shared values and a sense of identification to European citizens. Our empirical data includes ethnographic observation as well as in…
‘Something’s Not Right in Silverhöjd’: Nordic Supernatural and Environmental and Species Justice in Jordskott
2022
In the Swedish/Finnish/British/Norwegian television series Jordskott (2015–17) child victims’ mysterious disappearances signal that ‘something’s not right’ in Silverhöjd, a Swedish town. Three detectives uncover a conflict between the locals who depend on a local industry and preternatural human-like but non-human forest creatures familiar from Nordic tradition and fairylore. Both humans and semi/non-humans are ambivalent, but what sets the latter apart is their implication in caring for nature, protecting it, and punishing those who harm it. We analyse this series’ instantiation of a folkloristic popular green criminology, based in the idea that popular discourses’ representations of crime…
Beetwen Berlin and Moscow: Polish Western Thought in the Twenty-Year Interwar Period
2020
The article was submitted on 27.02.2020. This article is not primarily focused on presenting arguments and views held by Polish political groups with reference to the territorial shape of the Polish state after the First World War. Instead, its aim is to draw attention to actions taken by these groups towards the defence of Polish western lands. One of the key problems of Poland’s foreign policy after 1918 was the question of relations with its neighbours, chiefly Germany and Russia (and the Soviet Union). For many years, the most serious problem faced by post-Versailles Europe was that of the Germans striving to revise the legal order, to break their political isolation, and return to the …
Days of the Cavemen? : Adorno, Spengler, and the Anatomy of Caesarism
2021
Abstract This article addresses the controversial question of Theodor W. Adorno’s debt to right-wing Zivilisationskritik by a close reading of his essay “Spengler after the Decline” (1950). The article shows that despite Adorno’s harsh polemics against Oswald Spengler’s Decline of the West (1918, 1922), he sought to make Spengler’s analysis of Weimar Germany’s undemocratic tendencies—“Caesarism”—serve progressive ends. However, Adorno’s essay was not just an effort at “coming to terms with the past” in Adenauerian West Germany. Reading the essay’s original 1941 version together with Adorno’s correspondence with Max Horkheimer sheds light on Spengler as an overlooked key (next to Max Weber, …