Search results for "arrangement."
showing 10 items of 343 documents
Acidity and basicity of primaryN-phenylnitramines: catalytic effect of protons on the nitramine rearrangement
2002
Para-substituted N-phenylnitramines were prepared either by oxidation of diazonium salts or by nitration under alkaline or acidic conditions. Isotopic [15N-NO2] labelling indicated that the bands characteristic of the N-nitro group appear in the 1318–1323 and 1585–1607 cm−1 regions. In the nitrogen NMR spectra, the nitramino group gives two resonances at −193 ± 3 (NH) and −32 ± 3 ppm (NO2). The chemical shifts in proton and carbon NMR spectra are predictable, based on increments and the additivity rule. The spectral data indicate the lack of conjugation between the nitramino group and another substituent bound to the ring. It seems to contradict the well-known fact that substituents strongl…
The association between parental education, living arrangements and dietary habits among overweight and obese Norwegian children aged 6-10 years : “F…
2016
Masteroppgave folkehelsevitenskap - Universitetet i Agder 2016 Children´s dietary patterns have changed the passed decades. Children are more overweight and obese, and social inequalities related to this topic are discussed among all societies. The purpose of the master thesis was to explore the association between the sociodemographic factors parental education and living arrangements and the availability and intake of selected food items and total energy intake and macronutrient intake among overweight and obese Norwegian children aged 6-10 years. The thesis is an extension of the theory that is used in the article. This thesis begins with an introduction, which further expands to the ela…
Synthesis of Amino-1,2,4-triazoles by Reductive ANRORC Rearrangements of 1,2,4-Oxadiazoles
2010
The reaction of various 1,2,4-oxadiazoles with an excess of hydrazine in DMF has been investigated. 3-Amino- 1,2,4-triazoles are produced through a reductive ANRORC pathway consisting of the addition of hydrazine to the 1,2,4-oxadiazole followed by ring-opening, ring-closure, and final reduction of the 3-hydroxylamino-1,2,4-triazole intermediate. The general applicability of 1,2,4-oxadiazoles ANRORC reactivity is demonstrated also in the absence of C(5)-linked electron-withdrawing groups.
A Complete, Exact and Efficient Implementation for Computing the Edge-Adjacency Graph of an Arrangement of Quadrics
2011
International audience; We present a complete, exact and efficient implementation to compute the edge-adjacency graph of an arrangement of quadrics, i.e. surfaces of algebraic degree 2. This is a major step towards the computation of the full 3D arrangement. We enhanced an implementation for an exact parameterization of the intersection curves of two quadrics, such that we can compute the exact parameter value for intersection points and from that the edge-adjacency graph of the arrangement. Our implementation is complete in the sense that it can handle all kinds of inputs including all degenerate ones, i.e. singularities or tangential intersection points. It is exact in that it always comp…
Claims secured by a registered pledge in sanation proceedings
2019
This study concerns the legal situation of a receivable secured by a registered pledge in a debtor’s sanation (restructuring) proceedings. The registered pledgee has a special position in the course of such proceedings. The study discusses the rules of subjecting the receivable secured by the arrangement, the rules of preparing and contesting the list of receivables, and finally the rules of satisfying the pledgee.
Proksemika klasy szkolnej – ukryty wymiar edukacji
2013
W artykule dokonano przeglądu badań dotyczących znaczenia środowiska fizycznego klasy szkolnej dla przebiegu kształcenia, klimatu uczenia się i jakości wzajemnego komunikowania się. W analizach skupiono się zwłaszcza na strefach dystansu fizycznego, zatłoczeniu i zagęszczeniu, aranżacji miejsc siedzących oraz wystroju wnętrza sali lekcyjnej. Z przeglądu badań wynika, że mniejsze dystanse fizyczne między nauczycielem a uczniami sprzyjają osiąganiu wyższych wyników w nauce. Brak odpowiedniej przestrzeni fizycznej (zatłoczenie i zagęszczenie) wpływa na kłopoty z koncentracją, zmniejsza dokładność wykonywania zadań i nasila zachowania agresywne. Znawcy proksemiki klasy szkolnej podkreślają, że …
The Institution of Security Agent: A Comparative Study of Polish and French Laws
2022
In many continental legal systems it was often problematic to grant a security right to an entity separate from the holder(s) of the secured receivables. Such arrangement was especially desired by the parties in complex lending structures with many creditors. To solve this problem various legal solutions have been created in different countries. In Poland and in France the special institution of a security agent has been introduced. Aim of this article is to compare those two regulations. The conclusion is that the French provisions better deals with the challenges posed by the entity separation problem. Security agent, collective security arrangements, entity separation, unity principle, s…
Studies in organic mass spectrometry. Part 23. Role of the aroyl group on the competitive fragmentation reactions of the molecular ion of aroylanilid…
1999
The 70 eV and mass-analysed ion kinetic energy (MIKE) spectra of some thiophenecarboxanilides and benzoylanilides (1–10) have been compared in order to investigate the role of the aroyl (or heteroaroyl) moiety on the abundance of the competitive fragmentation reactions occurring in their molecular ions (amide–bond cleavage and phenol radical ion formation). It has been shown that the electron ionisation induced decompositions with high (70 eV) and low (MIKE) internal energy excess are qualitatively similar, but remarkable quantitative differences have been observed that can be accounted for in terms of the different effectiveness in the transmission of electronic effects of substituents in …
Multiskilled in many ways : Ghanaian Female Journalists Between Job and Home
2020
In Ghana, feminisation of journalism profession has become a fact: more girls are entering journalism programmes in the Universities, and the number of women employees are growing in the newsrooms. The problem of balancing worktime arrangements (e.g. irregular and unpredictable work schedules, weekend work and long working hours) with equally important domestic obligations are familiar to most female journalists around the globe. Even in countries with well-developed social support structures, and well-defined labour laws, the current nature of journalism worktime arrangements impedes many female journalists to achieve work–life balance. For most Ghanaian female journalists, the culturally …
Synthesis of new hybrid 1,4-thiazinyl-1,2,3-dithiazolyl radicals via Smiles rearrangement
2017
The condensation reaction of 2-aminobenzenethiols and 3-aminopyrazinethiols with 2-amino-6-fluoro-N-methylpyridinium triflate afforded thioether derivatives that were found to undergo Smiles rearrangement and cyclocondensation with sulphur monochloride to yield new hybrid 1,4-thiazine-1,2,3-dithiazolylium cations. The synthesized cations were readily reduced to the corresponding stable neutral radicals with spin densities delocalized over both 1,4-thiazinyl and 1,2,3-dithiazolyl moieties. peerReviewed