Search results for "transition"

Single crystal X-ray diffraction studies on [(CH3)nNH4–n]3[Sb2Cl9] (2,3) chloroantimonates(III) in their low-temperature ferroelectric phases—structu…

2005

The structures of two ferroic chloroantimonates(III): [(CH3)2NH2]3[Sb2Cl9] (DMACA) and [(CH3)3NH]3[Sb2Cl9] (TMACA) were determined in their low-temperature phases. The structure of DMACA was investigated at 100 and 15 K, and TMACA at 15 K. The structures consist of two-dimensional inorganic layers and organic cations bound together by the N(C)–H⋯Cl hydrogen bonds. All of the organic cations in both compounds at all studied temperatures are ordered. There is no indication of the structural phase transition in the structure of DMACA below 242 K. The geometry and distortions of the [SbCl6]3– octahedra in both compounds is discussed.

Structure and phase transitions in ethylenediammonium dichloride and its salts with antimony trichloride

2000

During the mixing of ethylenediammonium dichloride and antimony trichloride except of reported earlier [NH3(CH2)2NH3]5(Sb2Cl11)2 · 4 H2O a new salt [NH3(CH2)2NH3](SbCl4)2 was obtained. The crystals are monoclinic at 295 K, space group C2/m, a = 13.829(3), b = 7.408(1), c = 7.588(2) Å; β = 103.18(3)°; V = 756.9(3) Å3; Z = 2; dc = 2.585, dm = 2.56(2) g · cm–3. The structure consists of anionic sublattice built of Sb2Cl82– units composed of two SbCl52– square pyramids connected by edge. The ethylenediammonium cations are located in anionic cavities. The cations are disordered. Each methylene carbon atom is split between two positions. The X‐ray diffraction, DSC, TGA and dilatometric methods we…

The Role of Perceived Social Support as a Contributor to the Successful Transition from Primary to Lower Secondary School

2019

Following approximately 1,800 Finnish children, this longitudinal study examined the associations between students’ perceived social support (teacher-student relationships, family support, and peer support), behavioral engagement, cynicism towards school, and academic achievement during the transition from primary to lower secondary school. After controlling for parental educational level and cynicism before the school transition, the results showed that the more students experienced pre-transition peer support, the less they reported post-transition cynicism. Furthermore, pre-transition peer support contributed to students’ increased academic achievement and behavioral engagement after the…

Finnish dairy farmers’ perceptions of justice in the transition to carbon-neutral farming

2022

Highlights • Finnish dairy farmers' perceptions of issues with carbon neutrality were examined. • Concerns include farming profitability, farmer blaming, and use of peatlands. • Public policy guidance is needed for carbon-neutral, sustainable agriculture. Environmental and political debate concerning the role of agriculture in sustainability has long been on the agenda. However, owing to climate change, an analysis of the transition to a low-carbon society must also be considered from the perspective of justice. Dairy farming, in particular, faces pressure in this context, when contemplating changing consumer behaviors and reduction in the carbon footprint of dairy products. Accordingly, ma…

Tuning the Photoresponse of Nano‐Heterojunction: Pressure‐Induced Inverse Photoconductance in Functionalized WO 3 Nanocuboids

2019

S.R. and S.S. contributed equally to this work. This work was mainly supported by the Natural Science Foundation of China (Grant No. 11874076), National Science Associated Funding (NSAF, Grant No. U1530402), and Science Challenging Program (Grant No. TZ2016001). D.E. thanks the financial support from Spanish MINECO under Grant No. MAT2016-75586-C4-1-P and from Generalitat Valenciana under Grant Prometeo/2018/123, EFIMAT. The X-ray diffraction measurements were performed at the BL15U1 station, Shanghai Synchrotron Radiation Facility (SSRF) in China. The HP XAS measurements were performed at 20 ID-C, APS, ANL. APS is supported by DOE-BES, under contract no. DE-AC02-06CH11357. The authors grat…

THE PHYSICAL ORIGIN OF PROTEIN DYNAMICAL TRANSITION: A LIQUID-LIQUID TRANSITION IN HYDRATION WATER?

2015

In this thesis I study, by means of neutron scattering, calorimetry, and dielectric spectroscopy, the physical origin of protein dynamical transition (PDT) which is usually observed at ~230 K in protein hydrated powders and is deemed necessary for protein function. Measurements reported in this thesis have been performed on hydrated powders of Myoglobin. The combined use of different experimental techniques gives a coherent description of the PDT and reveals a connection with a liquid-liquid crossover occurring in the protein hydration water at about the same temperature. In order to deepen our understanding of this connection and to obtain a direct experimental evidence of the existence of…

Study Regarding the Effects of Demographic Transition on Labor Market and Public Pension System in Central and Eastern Europe

2020

Abstract Population and the quality of labor force are the “strengths” features’ that ensure socio-economic development of a country. The last decades can be characterized as a transitional period, in which countries of European Union and especially the countries of Central and Eastern Europe are facing a demographic decline. Reduced birth rate, ageing and migration are factors’ which create a lot of pressure, both on labor market and public pension systems, items correlated with the population structure. In this paper we have presented the demographic situation and the size of migration in five countries of Central and Eastern Europe. The direct linkage between population structure, labor …

Effect of protein net charge and steric hindrance on the glass transition of Protein-Trehalose-Water systems and on protein thermal denaturation

2010

Matrix glass transition and embedded protein denaturation: effect of trehalose on different proteins

2010

The interaction of transition metal complexes with deoxyribonucleic acid

2011

La presente tesi `e suddivisa in quattro capitoli. Il Capitolo 1 `e di carattere introduttivo. Nel Capitolo 2 viene trattata la sintesi e la caratterizzazione strutturale dei complessi di CuII, NiII e ZnII con il legante N,N’-Bis-5-(trietil ammonio metil salicilidene)-1,2- fenilendiammina. Inoltre, vengono riportati e confrontati i risultati dello studio della loro interazione con DNA nativo. Viene in particolare mostrato come l’interazione con DNA aumenti la stabilit`a fotochimica del complesso di ZnII. Infine, vengono evidenziati gli effetti del confinamento in cristalli liquidi sull’interazione del complesso di CuII e DNA.Nel Capitolo 3 `e riportata la sintesi e la caratterizzazione stru…