Search results for " FRAMEWORK"

A tris-oxovanadium pyrogallate complex: synthesis, structure, and magnetic and electronic properties

2021

International audience; With the aim of identifying new cation-phenolate complexes, we herein investigated the reactivity of pyrogallol (H(3)pgal) with vanadium salts. A trimetallic anionic complex was identified, and found to be formed under a broad set of reaction conditions. This complex, with the formula V3O3(pgal)(3)(3-), consists of three oxovanadium(iv) units connected together by three pyrogallate ligands to afford a bowl-shaped species presenting a pseudo 3-fold symmetry axis. Its crystal structure is reported, as well as its characterisation by a broad set of techniques, including powder X-ray diffraction, thermogravimetric analysis, infrared and Raman spectroscopy, and solid stat…

Coordination Driven Capture of Nicotine Inside a Mesoporous MOF.

2017

Metal organic frameworks (MOFs) are a wide class of crystalline porous polymers studied in many fields, ranging from catalysis to gas storage. In the past few years, MOFs have been studied for the encapsulation of organic or organometallic molecules and for the development of potential drug carriers. Here, we report on the study of two structurally-related mesoporous Cu-MOFs, namely PCN-6 and PCN-6′ (PCN stands for Porous Coordination Network), for nicotine trapping. Nicotine is a well-known alkaloid liquid molecule at room temperature, whose crystalline structure is still unknown. In this work, the loading process was monitored by electron ionization mass spectrometry by using a direct ins…

Applications of Topological *-Algebras of Unbounded Operators

1998

In this paper we discuss some physical applications of topological *-algebras of unbounded operators. Our first example is a simple system of free bosons. Then we analyze different models which are related to this one. We also discuss the time evolution of two interacting models of matter and bosons. We show that for all these systems it is possible to build up a common framework where the thermodynamical limit of the algebraic dynamics can be conveniently studied and obtained.

Ti-based robust MOFs in the combined photocatalytic degradation of emerging organic contaminants.

2022

Photocatalysis process is a promising technology for environmental remediation. In the continuous search of new heterogeneous photocatalysts, metal–organic frameworks (MOFs) have recently emerged as a new type of photoactive materials for water remediation. Particularly, titaniumbased MOFs (Ti-MOFs) are considered one of the most appealing subclass of MOFs due to their promising optoelectronic and photocatalytic properties, high chemical stability, and unique structural features. However, considering the limited information of the reported studies, it is a hard task to determine if real-world water treatment is attainable using Ti-MOF photocatalysts. In this paper, via a screening with seve…

Extension theory and the calculus of butterflies

2016

Abstract This paper provides a unified treatment of two distinct viewpoints concerning the classification of group extensions: the first uses weak monoidal functors, the second classifies extensions by means of suitable H 2 -actions. We develop our theory formally, by making explicit a connection between (non-abelian) G-torsors and fibrations. Then we apply our general framework to the classification of extensions in a semi-abelian context, by means of butterflies [1] between internal crossed modules. As a main result, we get an internal version of Dedecker's theorem on the classification of extensions of a group by a crossed module. In the semi-abelian context, Bourn's intrinsic Schreier–M…

EXPERIMENTAL EVALUATION OF THE ACCURACY OF RFID BASED LOCALIZATION SYSTEMS FOR INDUSTRIAL WAREHOUSES

2009

Impact of e-government on transaction cost and FDI inflows: A proposed conceptual framework

2011

Published version of an article in International Journal of Business and Management, 6(11), 285-296. Also available from the publisher at http://dx.doi.org/10.5539/ijbm.v6n11p285 Although vast normative e-government literature supports the assertion that implementation of e-government reduces transaction cost and promotes Foreign Direct Investment; empirical evidence to support this thesis is limited. Even more, there is limited attempt when studying this phenomenon to integrate e-government literature with other literatures in which major constructs of interest are rooted. This article contributes to reducing this gap by establishing a conceptual framework that integrates e-government lite…

Does cooperation affect service delivery costs? Evidence from fire services in Norway

2017

The objective of this study is to develop our understanding of how cooperation between local governments affects service delivery costs. The current study provides three contributions to the existing literature: (1) we assess the relation between inter-municipal cooperation and service delivery costs for fire services; (2) we evaluate whether different forms of cooperation affect costs differently; and (3) we analyse how the number of cooperation partners affects the cooperation–cost relation. Theoretically, it is argued that cooperation promotes scale economies, but that increasing transaction costs from additional cooperation partners may outweigh these potential benefits. The data show t…

Humour as a symptom of research trends in translation studies

2017

This article is an overview of translation studies applied to the case of humour, divided into four parts, plus an extensive bibliography. The first part goes over humour translation as a relevant object of research and why it is worthy of more academic attention. Humour translation should not be dealt with or looked upon as a strange body within translation studies. Part two is an overview of key contributions to the field, from Spain and elsewhere, covering a considerable number of authors and theories. Part three focuses on promising areas of interest for researchers and illustrates how audiovisual translation is a good instance of dynamism within the field, connecting all this to the ri…

2019

Impact is increasingly important for science policy-makers; science policy studies has reacted this heightened urgency by studying these policy-interventions meaning that policy has developed more quickly than theory. This has led to the prevalence of a ‘common sense’ impact definition: research’s societal impact are direct economic effects, such as income generated by licenses, patents and spin-out companies. These indicators are recognised as weak proxies for research’s societal benefits, and in response, science policy has undertaken a huge descriptive effort to more precisely define impact. SSH disciplines have been highly active in this because economic metrics are very poor measures o…