Search results for "AAT"
showing 10 items of 6105 documents
Straightforward One-Pot Synthesis of New 4-Phenyl-1,2,5,6-tetraazafluoranthen-3(2H)-one Derivatives: X-ray Single Crystal Structure and Hirshfeld Ana…
2022
A straightforward one-pot route for the synthesis of a new 4-phenyl-1,2,5,6-tetraazafluoranthen-3(2H)-one is reported form the direct hydrazinolysis of triketo ester and hydrazine hydrate in ethanol. 4-Phenyl-1,2,5,6-tetraazafluoranthen-3(2H)-one was subjected to aza-Michael addition and N-alkylation on reaction with a set of alkylating agents in the presence of K2CO3. Hydrazinolysis of 4-phenyl-1,2,5,6-tetraazafluoranthen-3(2H)-one ester to hydrazide and conversion of hydrazide to thiosemicarbazide were successful. X-Ray single crystals analysis and 1H, 13C NMR were used for unambiguous structure confirmation. The O…H, N…H, C…N and C…C in 2, and the N…H, …
The Difficult Marriage of Triarylcorroles with Zinc and Nickel Ions.
2022
The coordination chemistry of corrole has witnessed a great improvement in the past few years and its Periodic Table has been widened to be so large that it is compared with that of porphyrins. However, Ni and Zn ions, commonly used with porphyrins for both synthetic and theoretical purposes, are sparsely reported in the case of corroles. Here, we report synthetic protocols for preparing Ni and Zn triarylcorrole complexes. In the case of Zn, the preliminary oxidation of the free base corrole in DMSO to the neutral corrole radical is a necessary step to obtain the coordination of the metal ion, because the direct reaction led to the formation of an open-chain tetrapyrrole. The Ni complex cou…
Toward Near-Infrared Emission in Pt(II)-Cyclometallated Compounds: From Excimers’ Formation to Aggregation-Induced Emission
2023
Two series of Pt(II)-cyclometallated compounds containing N^C^N tridentate and alkynyl-chromophore ligands have been synthesized and structurally characterized. The N^C^N ligands differ on the presence of R1 = H or F in the central aromatic ring, while six different chromophores have been introduced to the alkynyl moiety. Single-crystal X-ray structures for some of the compounds reveal the presence of weak intermolecular contacts responsible for the formation of some dimers or aggregates. The photophysical characterization shows the presence of two emission bands in solution assigned to the 3π–π* transition from the N^C^N ligands mixed with 3MLCT/3ILCT transitions (higher energy band) in de…
Motivations and domain specificity in intercultural adaptation : bloggers' experiences in their new host countries
2014
The current qualitative study investigates immigrant’s intrinsic (internal) and extrinsic (external) motivations and how they surface in the intercultural adaption process. Additionally, it aims to answer whether immigrant’s adaptation orientations differ between private and public (life) domains by testing Boski’s (2008) IAFS model [the model of integration as functional(partial) specialization]. It is a fairly recent model of adaptation and only few prior studies have utilized it. The study concentrates on voluntary migrants, individuals, who have made a personal choice to leave their homelands. In the current study naturally occurring data in a form of weblogs were utilized as research d…
Orgnisational communication in a multinational corporation : a case study of communication between a Finnish headquarters and its Swedish subsidiary
2000
Evolving Conceptualisations of Internationalism in the UK Parliament : Collocation Analyses from the League to Brexit
2020
This chapter explores a historical distant reading strategy of British Parliamentary discourse. It uses historical collocation analyses of ‘internationalism’ and the ‘international’ in the British Hansard Corpus and a selection of Commons and Lords debates concerning British membership in international organisations as it relates to the League of Nations, United Nations, Council of Europe, EEC and Brexit. The collocates that were deemed to be politically significant are grouped in 13 loose semantic fields. This macro-level analysis of long-term trends of discourse is supplemented with an analysis of the said key debates in their historical contexts, including comparisons between the two Hou…
Evaluation of Internet channels and their impacts on Irish mobile operators' business models
2013
Ademowo, Adewale Adebayo Evaluation of Internet Channels and their impacts on Irish Mobile Operators' Business Models Jyväskylä: University of Jyväskylä, 2013, 108 p. Mobile Technology and Business (Major in Information Systems Science), Master's Thesis Supervisor: Luoma, Eetu This study finds the impacts of the Internet channels on mobile operators’ business models with Ireland as a case. It reflects on the business model concepts, business models of mobile telecom industry and specifically Irish mobile operators; and evaluates and highlights the impacts of the internet channels used by the operators. This study uses exploratory case study as a methodology and qualitative method as an appr…
Internet based exercise management system for worksite exercise and well-being intervention
2012
Reijo Kangas. 2012. Internet based exercise management system for worksite exercise and well-being intervention. University of Jyväskylä. Department of Sport Sciences, Master’s thesis in Sport and Exercise Psychology, 105 pages. The studies of exercise motivation theories can be used for the requirements of exercise management software systems. User-friendly mobile and web applications may wake up people’s interest of their own awareness of unhealthy manners like obesity, sedentary behavior and possible mental health problems of inactivity. The aim of the present study was to plan, organize and evaluate an internet based exercise intervention for workers. Other purpose of the study was to o…
Adoption of a COVID-19 Contact Tracing App Among Older Internet Users in Finland
2022
The outbreak of the COVID-19 pandemic created an unequal need for limiting physical contacts and tracing possible exposures to a novel coronavirus. Smartphone-based contact tracing applications (CTAs) were presented as a vehicle for stopping virus transmission chains and supporting the work of contact tracing teams. In this study, older adults’ adoption of a CTA was studied using socioeconomic background factors, satisfaction with health, and the measure of digital activity as predictors. The data were drawn from a larger questionnaire survey targeted at older internet users. A subsample of older Finnish internet users (N = 723) was analyzed using a logistic regression model. Results showed…