Search results for "SELE"
showing 10 items of 4721 documents
Organocatalytic Domino Oxa-Michael/1,6-Addition Reactions: Asymmetric Synthesis of Chromans Bearing Oxindole Scaffolds.
2016
An asymmetric organocatalytic domino oxa-Michael/1,6-addition reaction of ortho-hydroxyphenyl-substituted para-quinone methides and isatin-derived enoates has been developed. In the presence of 5 mol % of a bifunctional thiourea organocatalyst, this scalable domino reaction affords 4-phenyl-substituted chromans bearing spiro-connected oxindole scaffolds and three adjacent stereogenic centers in good to excellent yields (up to 98 %) and with very high stereoselectivities (up to >20:1 d.r., >99 % ee).
CCDC 628062: Experimental Crystal Structure Determination
2007
Related Article: L.Vigo, M.Risto, E.M.Jahr, T.Bajorek, R.Oilunkaniemi, R.S.Laitinen, M.Lahtinen, M.Ahlgren|2006|Cryst.Growth Des.|6|2376|doi:10.1021/cg060348r
Recognition and Civic Selection
2021
Large-scale immigration and the refugee crisis have caused many states to adapt ever stricter civic selection processes. This paper discusses the challenges arising from civic selection from the perspective of recognition theories. The argument is that recognition theories provide good conceptual tools with which to critically analyze civic selection and immigration. However, the paper also aims to highlight that many current institutional practices are problematic from the perspective of recognition. In the context of civic selection, it is helpful to understand recognition as something that comes in two analytically distinct modes: horizontal (or interpersonal) and vertical (or institutio…
Will collaborative partners’ selection enhance sustainability performance of firms? An empirical study
2015
Main purpose of this paper is to study the role of collaboration for sustainability, in success of business performance. Businesses can have collaborations with many players such as suppliers, logistics operators, clients, intra- and inter-departmental collaborations, for various purposes including the sustainability. We use qualitative approach, mainly semi-structured interviews to understand various dimensions of collaboration namely sharing of valuable information, physical resources both tangible and intangible. We try to understand the collaborative relationships of focal companies under study with its suppliers, buyers and logistics partners. Further, we will study the impact of colla…
First Chemosensor for Selective Detection and Quantification of L-4-Hydroxyproline in Collagen and Other Bio Samples.
2017
Amino pyridine-based rhodamine conjugate (APR) has been developed as a first chemosensor for selective detection and quantification of L-4-Hydroxyproline (Hyp). The “turn-on” fluorescence property of the chemosensor makes it unique for easy estimation of Hyp in collagen and biological samples. peerReviewed
Polish local democracy in crisis? Non-competitive elections and the supply of candidates for councillors
2022
Competitive elections are the basis of democracy; without them there is no freedom of choice. Elections without competition are associated with the façade nature of elections in undemocratic systems. There are, however, exceptions to the belief that in a democratic system every election must be competitive. We can also observe them in Poland, particularly in small communes with up to 20,000 inhabitants. They take two forms: non-competitive elections of commune leaders and councillors. The latter case is known in the literature under the legal term of filling seats without voting. In 2018, as many as 8% of Polish councillors obtained their mandate without votes. In 2018 compared to 2014, the…
Minori migranti soli e bisogno di riconoscimento: la tutela legale come atto dell’aver cura.
2021
Il presente contributo propone una riflessione pedagogica sulla relazione educativa tra la figura del tutore legale volontario, istituito con la Legge n. 47 del 2017 e l’adolescente migrante “solo”, accolto nel Sistema di Accoglienza e Integrazione (SAI). Partendo dall’esperienza educativa della tutorialità, assunta nella presa in carico degli adolescenti soli come una nuova forma di affiancamento e pratica dell’aver cura del mondo interiore ed esperienziale del minore, che presenta aspetti linguistici e culturali differenti, si cercherà di far emergere i tratti essenziali che costituiscono il suo bisogno di essere riconosciuto come persona. Quella dell'adolescente migrante solo è un’esiste…
Computational methods and theory for ion channel research
2022
Ion channels are fundamental biological devices that act as gates in order to ensure selective ion transport across cellular membranes; their operation constitutes the molecular mechanism through which basic biological functions, such as nerve signal transmission and muscle contraction, are carried out. Here, we review recent results in the field of computational research on ion channels, covering theoretical advances, state-of-the-art simulation approaches, and frontline modeling techniques. We also report on few selected applications of continuum and atomistic methods to characterize the mechanisms of permeation, selectivity, and gating in biological and model channels.
One-Dimensional Convolutional Neural Networks Combined with Channel Selection Strategy for Seizure Prediction Using Long-Term Intracranial EEG
2022
Seizure prediction using intracranial electroencephalogram (iEEG) has attracted an increasing attention during recent years. iEEG signals are commonly recorded in the form of multiple channels. Many previous studies generally used the iEEG signals of all channels to predict seizures, ignoring the consideration of channel selection. In this study, a method of one-dimensional convolutional neural networks (1D-CNN) combined with channel selection strategy was proposed for seizure prediction. First, we used 30-s sliding windows to segment the raw iEEG signals. Then, the 30-s iEEG segments, which were in three channel forms (single channel, channels only from seizure onset or free zone and all c…
Winter male plumage coloration correlates with breeding status in a cooperative breeding species
2007
The function of colored ornaments is usually related to the signaling of individual quality in intra- and intersexual interactions. In cooperative breeding species, where only a fraction of the male population access the breeding status and the other fraction has the option to help breeding pairs, colored traits might provide the females with a reliable information on the quality of potential mate. Males of the cooperative breeding azure-winged magpies (Cyanopica cyanus) display conspicuous blue plumage coloration. Here we explored the role played by structural blue coloration of males and the probability of becoming a breeder or a helper. Birds were trapped during 4 consecutive years, and …