Search results for "TetR"
showing 10 items of 8965 documents
Tetragonal tungsten bronzes Nb8−xW9+xO47−δ: optimization strategies and transport properties of a new n-type thermoelectric oxide
2015
Engineering of nanoscaled structures may help controlling the electrical and thermal transport in solids, in particular for thermoelectric applications that require the combination of low thermal conductivity and low electrical resistivity. The tetragonal tungsten bronzes Nb8−xW9+xO47 (TTB) allow a continuous variation of the charge carrier concentration while fulfilling at the same time the concept of a “phonon-glass electron-crystal” through a layered nanostructure defined by intrinsic crystallographic shear planes. The thermoelectric properties of the tetragonal tungsten bronzes Nb8−xW9+xO47−δ (0 < x < 2) were studied in the temperature range from 373 to 973 K. Structural defects and the…
Associations of physical performance and physical activity with mental well-being in middle-aged women
2021
Abstract Background To investigate whether physical performance is independently of physical activity (PA) associated with positive and negative dimensions of mental well-being in middle-aged women. Methods Data were drawn from the Estrogenic Regulation of Muscle Apoptosis (ERMA) study in which women 47 to 55 years were randomly selected from the Finnish National Registry. They (n = 909) participated in measurements of physical performance (handgrip force, knee extension force, vertical jumping height, maximal walking speed, and six-minute walking distance). Both mental well-being (the Centre for Epidemiologic Studies Depression Scale, the International Positive and Negative Affect Schedule…
Third order nonlinear optical properties of novel TetrathiafulvalenePhenanthroline based dyads
2011
The non-linear optical properties of π-conjugated organic molecules such as TTF and their derivatives have recently gained particular interest due to their extended π-system and the strong electron donating character. The knowledge of the nonlinear optical response, as well as the impact of the charge transfer on the nonlinearity is very important. As such systems can be used in a variety of applications. In this study we investigate the nonlinear absorption of novel tetrathiafulvalene-phenanthroline based dyads by means of the Z-scan technique.
SYNTHESIS, REACTIVITY OF ISOINDOLE DERIVATIVES
2004
Prenatal air pollution exposure and growth and cardio-metabolic risk in preschoolers
2020
Objectives: We investigated the association between outdoor air pollutants exposure in the first trimester of pregnancy, and growth and cardio-metabolic risk at four years of age, and evaluated the mediating role of birth weight. Methods: We included mother-child pairs (N = 1,724) from the Spanish INMA birth cohort established in 2003-2008. First trimester of pregnancy nitrogen dioxide (NO2) and fine particles (PM2.5) exposure levels were estimated. Height, weight, waist circumference, blood pressure, and lipids were measured at four years of age. Body mass index (BMI) trajectories from birth to four years were identified. Results: Increased PM2.5 exposure in the first trimester of pregnanc…
Menopausal symptoms and cardiometabolic risk factors in middle-aged women : A cross-sectional and longitudinal study with 4-year follow-up
2023
Objective To study associations of menopausal symptoms with cardiometabolic risk factors. Study design A cross-sectional and longitudinal study of a representative population sample of 1393 women aged 47–55 years with a sub-sample of 298 followed for four years. The numbers of vasomotor, psychological, somatic or pain, and urogenital menopausal symptoms were ascertained at baseline through self-report. Their associations with cardiometabolic risk factors were studied using linear regression and linear mixed-effect models. Models were adjusted for age, menopausal status, body mass index, the use of hormonal preparations, education, smoking, and alcohol consumption. Main outcome measures Card…
Ftalocyjaniny metali jako katalizatory w reakcjach redoks związków szkodliwych dla środowiska
2017
Ftalocyjaniny są to związki chemiczne, będące strukturalnymi analogami porfiryn. Ich cząsteczki składają się czterech pierścieni izoindolowych połączonych czterema mostkami azometinowymi (Rys.1). W środku makrocyklu ftalocyjaniny można skompleksować jony prawie wszystkich metali układu okresowego, natomiast do pierścieni benzenowych mogą zostać przyłączone różne podstawniki, których rodzaj, ilość oraz rozmieszczenie wpływa na właściwości fizykochemiczne uzyskanych związków (Rys.2) (Leznoff i Lever Vol.1 1989; Vol.2 1991). Ftalocyjaniny posiadają wiele interesujących zastosowań, między innymi mogą być wykorzystane jako katalizatory w reakcjach utlenienia i redukcji wielu związków szkodliwych…
CCDC 1864766: Experimental Crystal Structure Determination
2018
Related Article: Jasmin Krause, Dimitris I. Alexandropoulos, Luca M. Carrella, Eva Rentschler, Theocharis C. Stamatatos|2018|Chem.Commun.|54|12499|doi:10.1039/C8CC07722C
CCDC 1869182: Experimental Crystal Structure Determination
2018
Related Article: Jasmin Krause, Dimitris I. Alexandropoulos, Luca M. Carrella, Eva Rentschler, Theocharis C. Stamatatos|2018|Chem.Commun.|54|12499|doi:10.1039/C8CC07722C