Search results for "cop"
showing 10 items of 25502 documents
Stochastic gravito-inertial modes discovered by CoRoT in the hot Be star HD 51452
2012
International audience; Context. Be stars are rapidly rotating stars with a circumstellar decretion disk. They usually undergo pressure and/or gravity pulsation modes excited by the κ-mechanism, i.e. an effect of the opacity of iron-peak elements in the envelope of the star. In the Milky Way, p-modes are observed in stars that are hotter than or equal to the B3 spectral type, while g-modes are observed at the B2 spectral type and cooler. Aims. We observed a B0IVe star, HD 51452, with the high-precision, high-cadence photometric CoRoT satellite and high-resolution, ground-based HARPS and SOPHIE spectrographs to study its pulsations in great detail. We also used the lower resolution spectra a…
Spectral analysis of the dipping LMXB system XB 1916-053
2019
Context: XB 1916-053 is a low mass X-ray binary system (LMXB) hosting a neutron star (NS) and showing periodic dips. The spectrum of the persistent emission was modeled with a blackbody component having a temperature between 1.31 and 1.67 keV and with a Comptonization component with an electron temperature of 9.4 keV and a photon index $\Gamma$ between 2.5 and 2.9. The presence of absorption features associated with highly ionized elements suggested the presence of partially ionized plasma in the system. Aims: In this work we performed a study of the spectrum of XB 1916-053, which aims to shed light on the nature of the seed photons that contribute to the Comptonization component. Methods: …
Spin Crossover and Long-Lived Excited States in a Reduced Molecular Ruby.
2020
Abstract The chromium(III) complex [CrIII(ddpd)2]3+ (molecular ruby; ddpd=N,N′‐dimethyl‐N,N′‐dipyridine‐2‐yl‐pyridine‐2,6‐diamine) is reduced to the genuine chromium(II) complex [CrII(ddpd)2]2+ with d4 electron configuration. This reduced molecular ruby represents one of the very few chromium(II) complexes showing spin crossover (SCO). The reversible SCO is gradual with T 1/2 around room temperature. The low‐spin and high‐spin chromium(II) isomers exhibit distinct spectroscopic and structural properties (UV/Vis/NIR, IR, EPR spectroscopies, single‐crystal XRD). Excitation of [CrII(ddpd)2]2+ with UV light at 20 and 290 K generates electronically excited states with microsecond lifetimes. This…
Uso de las coronas telescópicas en el tratamiento de un paciente adulto con fisura labiopalatina: Puesta al día de la etiología y el tratamiento
2006
La fisura labiopalatina es una de las malformaciones congénitas craneofaciales más importantes a tener en cuenta por el odontólogo general debido a su alta incidencia y a su elevada repercusión en la cavidad oral. Sus causas se deben a factores genéticos y predominantemente a factores ambientales, haciendo su aparición ya en el período embrionario. El sexo masculino se encuentra más afectado, en una relación de 7:3. La asociación más frecuente es el labio leporino unilateral total con fisura palatina, que es el caso que nos atañe. Presentamos el caso de un varón de 20 años que acude a nuestra consulta demandando una solución estética a su situación dental. El tratamiento efectuado al pacien…
Data set: Towards a rapid screening of liver grafts at the operating room using mid-infrared spectroscopy
2020
The estimation of steatosis in a liver graft is mandatory prior to liver transplantation, as the risk of graft failure increases with the level of infiltrated fat. However, the assessment of liver steatosis before transplantation is typically based on a qualitative or semi-quantitative characterization by visual inspection and palpation, and histological analysis. Thus, there is an unmet need for transplantation surgeons to have access to a diagnostic tool enabling an in situ fast classification of grafts prior extraction. In this study, we have assessed an Attenuated Total Reflection-Fourier Transform Infrared (ATR-FTIR) spectroscopic method compatible with the requirements of an operation…
Data set: Towards a rapid screening of liver grafts at the operating room using mid-infrared spectroscopy
2020
The estimation of steatosis in a liver graft is mandatory prior to liver transplantation, as the risk of graft failure increases with the level of infiltrated fat. However, the assessment of liver steatosis before transplantation is typically based on a qualitative or semi-quantitative characterization by visual inspection and palpation, and histological analysis. Thus, there is an unmet need for transplantation surgeons to have access to a diagnostic tool enabling an in situ fast classification of grafts prior extraction. In this study, we have assessed an Attenuated Total Reflection-Fourier Transform Infrared (ATR-FTIR) spectroscopic method compatible with the requirements of an operation…
Data set: Towards a rapid screening of liver grafts at the operating room using mid-infrared spectroscopy
2020
The estimation of steatosis in a liver graft is mandatory prior to liver transplantation, as the risk of graft failure increases with the level of infiltrated fat. However, the assessment of liver steatosis before transplantation is typically based on a qualitative or semi-quantitative characterization by visual inspection and palpation, and histological analysis. Thus, there is an unmet need for transplantation surgeons to have access to a diagnostic tool enabling an in situ fast classification of grafts prior extraction. In this study, we have assessed an Attenuated Total Reflection-Fourier Transform Infrared (ATR-FTIR) spectroscopic method compatible with the requirements of an operation…
Stresa pārvārēšanas stratēģiju saistība ar subjektīvo labklājību un pašcieņu
2017
Pētījuma mērķis ir izpētīt stresa pārvārēšanas stratēģiju, subjektīvās labklājības un pašcieņas savstarpējās saistības. Pētījumā piedalījās 86 respondenti, vecumā no 18 līdz 41 gadam. Pašcieņas mērīšanai tika izmantota Rozenberga pašcieņas skala (Rosenberg self-esteem scale, (Rosenberg, 1965)), Latvijā adaptējusi Anika Miltuze, 1996.gadā; stresa pārvārēšanas stratēģiju mērīšanai - Stresa pārvarēšanas stratēģiju aptauja (The Coping Orientation of Problem Experience / COPE / Inventory, (Carver, Scheier, & Weintraub, 1989)), Latvijā adaptējusi Inna Petrova, 2009.gadā; un subjektīvās labklājības mērīšanai - skala “ Apmierinātība ar dzīvi” (Satisfaction With Life Scale; (Pavot, & Diener, 1993)).…
Maladaptive stress coping: An additional psychological factor in the process of chronification of pain or pruritus
2021
Background: Inflammatory skin diseases with chronic pruritus and chronic back pain are very common symptoms in the general population and are associated with a reduced quality of life (QOL). In addition to biological factors, psychosocial reasons are also considered to be responsible for their development. So far, it is not known whether chronic pruritus and chronic back pain are related to maladaptive stress coping. Patients and methods: In our matched pilot case-control study with a total of 259 analyzed subjects, we compared outpatient groups, one suffering from chronic skin diseases with pruritus, the other with chronic back pain, to a healthy control group in terms of their stress copi…