Search results for "BUT"
showing 5 items of 11475 documents
Conformational investigation of alpha,beta-dehydropeptides. IX. N-Acetyl-(E)-alpha,beta-methylamide: stereoelectronic properties from infrared and th…
1998
The Fourier transform infrared spectra of Ac-(E)-deltaAbu-NHMe were analyzed to determine the predominant solution conformation(s) of this (E)-alpha,beta-dehydropeptide-related compound and the electron density perturbation in its amide groups. The measurements were performed in dichloromethane and acetonitrile in the region of mode vs (N-H), amide I, amide II and vs (C(alpha)=Cbeta). The equilibrium geometrical parameters, calculated by a method based on the density functional theory with the B3LYP functional and the 6-31G* basis set, were used to support spectroscopic interpretation and gain some deeper insight into the molecule. The experimental and theoretical data were compared with th…
Desymmetrization of Prochiral Cyclobutanones via Nitrogen Insertion: A Concise Route to Chiral γ‐Lactams
2021
Abstract Asymmetric access to γ‐lactams is achieved via a cyclobutanone ring expansion using widely available (1S,2R)‐1‐amino‐2‐indanol for chiral induction. Mechanistic analysis of the key N,O‐ketal rearrangement reveals a Curtin–Hammett scenario, which enables a downstream stereoinduction (up to 88:12 dr) and is corroborated by spectroscopic, crystallographic, and computational studies. In combination with an easy deprotection protocol, this operationally simple sequence allows the synthesis of a range of optically pure γ‐lactams, including those bearing all‐carbon quaternary stereocenters. In addition, the formal synthesis of drug molecules baclofen, brivaracetam, and pregabalin further …
Search for scalar leptoquarks in pp collisions at $\sqrt{s}$=13 TeV with the ATLAS experiment
2016
An inclusive search for a new-physics signature of lepton-jet resonances has been performed by the ATLAS experiment. Scalar leptoquarks, pair-produced in pp collisions at s √s = 13 TeV at the large hadron collider, have been considered. An integrated luminosity of 3.2 fb-1, corresponding to the full 2015 dataset was used. First (second) generation leptoquarks were sought in events with two electrons (muons) and two or more jets. The observed event yield in each channel is consistent with Standard Model background expectations. The observed (expected) lower limits on the leptoquark mass at 95% confidence level are 1100 and 1050 GeV (1160 and 1040 GeV) for first and second generation leptoqua…
DISCIPLINA INTERNA E DIMENSIONE SOVRANAZIONALE DEL “GIUSTO PROCESSO” IN MATERIA TRIBUTARIA
2012
Žurnālistu reprezentācija filmās "Whiskey Tango Foxtrot" un "Nothing But the Truth"
2022
Bakalaura darba “Žurnālistu reprezentācija filmās “Whiskey Tango Foxtrot” un “Nothing But the Truth”” mērķis ir analizēt, kā filmās reprezentēti žurnālisti. Reprezentācijas aspektus iespējams mainīt, izvēloties dažādus kinematogrāfiskos elementus. Šī iemesla dēļ darba teorijas daļā aplūkota semiotikas, naratīva un reprezentācijas teorija, kā arī žurnālistu raksturojošās profesijas iezīmes. Metodoloģijas daļā aprakstīta semiotikas un naratīva analīze, kas izmantota darba empīriskajā daļā, lai veiktu secinājumus par žurnālistu reprezentāciju izvēlētajās filmās. Empīriskajā daļā iegūti secinājumi par to, ka filmās izmantotie kinematogrāfiskie elementi ietekmē veidu, kā skatītāji var interpretē…