Search results for "SELE"
showing 10 items of 4721 documents
Many forms of the wood tiger moth (Parasemia plantaginis) : selective heterogeneity favours polymorphic warning signals
2013
Asymmetric synthesis of functionalized tetrahydrofluorenones via an NHC-catalyzed homoenolate Michael addition
2018
The first example of an N-heterocyclic carbene-catalyzed asymmetric desymmetrization of enal-tethered cyclohexadienones via an intramolecular homoenolate Michael addition/esterification reaction is described. This new protocol offers a direct entry to various functionalized tetrahydrofluorenones with three contiguous stereocenters in high yields, good diastereoselectivities and excellent enantioselectivities.
Badanie selektywności systemu podatkowego stanowiącego program pomocy – glosa do wyroku TSUE z dnia 16 marca 2021 r. w sprawie C-562/19 P Komisja Eur…
2021
Niniejszy artykuł ma na celu przedstawienie zagadnienia sposobu badania selektywności programu pomocy, który jest środkiem pomocy państwa w rozumieniu art. 107 ust. 1 Traktatu o funkcjonowaniu Unii Europejskiej1. Jednocześnie praca ta stanowi glosę do obecnie najnowszej wypowiedzi TSUE w tym przedmiocie, czyli do wyroku z dnia 16 marca 2021 r. w sprawie C-562/19 P Komisja Europejska v. Rzeczpospolita Polska2 (podatek od sprzedaży detalicznej), wraz z omówieniem dotychczasowego dorobku orzecznictwa. Artykuł odnosi się do stanu prawa i orzecznictwa na dzień 31 marca 2021 r.
Beta adrenoblokatoru izvēle asinsrites sistēmas slimību ārstēšanā un to patēriņš Latvijā salīdzinājumā ar citām valstīm
2016
Maģistra darba mērķis bija izpētīt sirds asinsvadu slimību ārstēšanai biežāk pielietotos beta – adrenoblokatorus, izpētīt to vispārējo patēriņu Latvijā un veikt salīdzinājumu ar Lietuvu un Igauniju. Maģistra darba uzdevums bija izanalizēt zāļu patēriņa statistiku, un salīdzināt iegūto informāciju ar aptiekas un ārstu aptaujas rezultātiem. Maģistra darba pētījuma rezultāti liecina, ka beta – adrenoblokarotu lietošana 2010.- 2014.gadā ir pieaugusi ne tikai Latvijā, bet arī Lietuvā un Igaunijā, ar stabilu tendenci turpināt pieaugt. Latvijā visbiežākais patēriņš ir kardioselektīvajam beta – adrenoblokatoram - bisoprololam, kam ir augsta selektivitāte, maz blakusparādību, gandrīz pilnībā uzsūcas…
Assimilation of Selenium, Copper, and Zinc in Rye Malt
2018
Abstract Trace elements selenium, copper, and zinc are essential minerals for the human body. One of the means to increase the micronutrient content in diets is to add them to food raw materials, for example, to enrich grain with micronutrients during malt production. To obtain rye malt, 3 kg grain was soaked in 10 l water with addition of three mineral salts — sodium selenate (Na2SeO4), copper sulphate (CuSO4 5H2O), and zinc sulphate (ZnSO4 7H2O) at different concentrations and different combination of salts. The concentration of selenium, copper, and zinc was determined in rye malt. The obtained results were used to calculate the degree of assimilation of trace elements in rye malt. The i…
Asymmetric Organocatalytic Wittig [2,3]-Rearrangement of Oxindoles
2016
A highly enantioselective organocatalytic [2,3]-rearrangement of oxindole derivatives is presented. The reaction was catalyzed by squaramide, and this provides access to 3-hydroxy 3-substituted oxindoles in high enantiomeric purities.
Asymmetric Synthesis of Chiral Bimetallic [Ag28Cu12(SR)24]4– Nanoclusters via Ion Pairing
2016
In this work, a facile ion-pairing strategy for asymmetric synthesis of optically active negatively charged chiral metal nanoparticles using chiral ammonium cations is demonstrated. A new thiolated chiral three-concentric-shell cluster, [Ag28Cu12(SR)24]4–, was first synthesized as a racemic mixture and characterized by single-crystal X-ray structure determination. Mass spectrometric measurements revealed relatively strong ion-pairing interactions between the anionic nanocluster and ammonium cations. Inspired by this observation, the as-prepared racemic mixture was separated into enantiomers by employing chiral quaternary ammonium salts as chiral resolution agents. Subsequently, direct asymm…
Developing narrative identities in youth pre-elite sport : bridging the present and the future
2019
Narrative research has contributed to understandings of athletic identity as an evolving story of the self that is creatively put together by the agentic individual but necessarily dependent on broader narratives within which we all live our lives. However, most studies in sport have focused on retrospective ‘big stories’ of athletes’ lives, rather than on-going, future-oriented identity construction through storytelling. In this study, we explored Finnish pre-elite athletes’ emerging stories of the self to understand the processes associated with the narrative selection and the resources they tap into in making sport meaningful to them. Nine women and eight men aged 17–18 were invited to c…
A study of the atmospherically important reactions between dimethyl selenide (DMSe) and molecular halogens (X2 = Cl2, Br2, and I2) with ab initio cal…
2012
The atmospherically relevant reactions between dimethyl selenide (DMSe) and the molecular halogens (X(2) = Cl(2), Br(2), and I(2)) have been studied with ab initio calculations at the MP2/aug-cc-pVDZ level of theory. Geometry optimization calculations showed that the reactions proceed from the reagents to the products (CH(3)SeCH(2)X + HX) via three minima, a van der Waals adduct (DMSe:X(2)), a covalently bound intermediate (DMSeX(2)), and a product-like complex (CH(3)SeCH(2)X:HX). The computed potential energy surfaces are used to predict what molecular species are likely to be observed in spectroscopic experiments such as gas-phase photoelectron spectroscopy and infrared matrix isolation s…
Relapse risk after autologous transplantation in patients with newly diagnosed myeloma is not related with infused tumor cell load and the outcome is…
2006
BACKGROUND AND OBJECTIVES: This European Group for Blood and Marrow Transplantation (EBMT) multicentre randomized phase III study was designed to assess the safety and efficacy of CD34+ selection in newly diagnosed myeloma patients undergoing autologous transplantation. DESIGN AND METHODS: One hundred and eleven patients responsive to initial chemotherapy were randomized to receive CD34+ selected (arm A) or unselected PBPC (arm B) after conditioning with high-dose melphalan and TBI. ASO-PCR was used to assess purging efficacy and reinfused tumor load. Tumor load could be assessed in 59 patients. RESULTS: CD34+ selection gave a median tumor cell depletion of 2.2 logs (0.77-5.96). No tumor ce…