Search results for "CoV"

Psihoemocionālie riski montāžas darbiniekam eksporta būvobjektos ārkārtas situācijas laikā

2022

Darba autors Emīls Beitiņš izstrādājis Bakalaura darbu par tēmu – “Psihoemocionālie riski montāžas darbiniekam eksporta būvobjektos ārkārtas situācijas laikā”. Darba kopējais apjoms 60 lpp, rezultāti apkopoti 7 tabulās, ievietoti 27 attēli. Darba izstrādāšanai izmantoti 25 literatūras avoti. Bakalaura darba mērķis ir apzināties pasākumu kopumu darba devējam, lai samazinātu psihoemocionālu stresu darbiniekam atrodoties ārvalstī ārkārtas situācijas laikā, kad nav zināma tuvākā iespēja atgriezties mājās pie ģimenes. Bakalaura darba uzdevums: Apzināties kādus pasākums uzņēmums varētu ieviest nākotnē, lai samazinātu darbinieku psiholoģisko stresu, kā arī apzināties cik lielu psiholoģisko stresu …

Covid-19 : quel bilan critique ? (Partie II)

2021

International audience

Selective favorskii rearrangement in macrocyclic rings

1981

Abstract A mixture of 2,2-dibromo-12-chlorocyclododecanone (IIa) and 2,12-dibromo-2-chlorocyclododecanone (IIb) by Favorskii rearrangement gave selectively methyl 2-chloro-1-cycloundecene-1-carboxylate (IIIa).

Spektrale eigenschaften und tautomerie aromatischer thiacyclole. Reaktionen mit aktivierten säureamiden. XV

1970

Influence of negative allosteric cooperativity in cation transport.

1992

Abstract The bis-macrocyclic ether5 seems to have a negative allosteric cooperativity and is able to transport double the amount of Na+ and K+ cations as monocyclic systems. This compound could be used as a simple model of the plasma membrane Na+−K+ ATPase which actively pumps Na+ out and K+ into the cell, respectively.

Metal ion-promoted activation of amino acid esters of carbohydrates in the synthesis of peptides

1992

Abstract Carbohydrate esters 1 and 2 of N-protected amino acids are activated by coordination of metal ions and subjected to aminolysis by amino acid esters 3 to form peptides 4 .

Über die Synthese von o-Acylamino-β-dimethylamino-propiophenonen 2. Mitt.: Aminomethylierung von o-Carbäthoxyamino- und o-Nitro-acetophenon1)

1970

Die bei der Mannich-Reaktion mit o-Carbathoxyamino- und o-Nitro-acetophenon zu Acrylophenonderivaten fuhrende Sekundarreaktion zwischen den Aminomethylierungsprodukten und Formaldehyd konnte auf folgende Weise nahezu vollstandig vermieden werden: durch Verhindern des Zerfalls von intermediar entstehendem Dimethylaminomethylol in seine Komponenten wird die Bildung des Carbonium-Imonium-Kations derart beschleunigt, das fur die Nebenreaktion erforderlicher freier Formaldehyd rasch aus dem Reaktionsmedium verschwindet. — Die Synthese von o-Carbathoxyamino-, o-Nitro- und o-Amino-β-dimethylamino-propiophenon sowie seines Formyl- und Acetylderivates wird beschrieben. Synthesis of o-Acylamino-β-dim…

A Look at Valencia’s Elections of the 28th of April and the 26th of May 2019

2020

This paper analyses the main features of the Valencian media coverage of the elections held in Spain in the Spring of 2019 (General, Regional, Municipal, and European elections). We shine a spotlight on the key themes covered by the main newspapers, radio and TV stations, and on the  campaign strategies parties used to define ideological blocs on the left and right.

Heterocyclisch anellierte Steroide aus 2-Hydroxymethylen-canrenon

1995

A-ring annulated heterocycles, the isoxazole 6, the pyrazoles 8 and the pyrimidines 9 are prepared starting from 2-hydroxymethylene canrenone 1. Binding studies were carried out with the compounds 1 and 6-8 using estrogen, progesterone, androgen, gluco- and mineralocorticoid receptors as well as the serum proteins SHBG and CBG: the substances were inactive on the receptor level. 1, 7 and 8a show weak binding affinity to CBG.

Catalytic enantioselective Friedel–Crafts alkylation at the 2-position of indole with simple enones

2007

Abstract A procedure for the enantioselective alkylation of indole at the 2-position with simple non-chelating enones is described for the first time. Reaction between 4,7-dihydroindole and enones in the presence of zirconium(IV)–BINOL complexes, followed by a p -benzoquinone oxidation gives indoles alkylated at the 2-position with good yields and moderate enantioselectivities.