Search results for "pero"

Purcell Enhancement and Wavelength Shift of Emitted Light by CsPbI3 Perovskite Nanocrystals Coupled to Hyperbolic Metamaterials

2020

Manipulation of the exciton emission rate in nanocrystals of lead halide perovskites (LHPs) was demonstrated by means of coupling of excitons with a hyperbolic metamaterial (HMM) consisting of alternating thin metal (Ag) and dielectric (LiF) layers. Such a coupling is found to induce an increase of the exciton radiative recombination rate by more than a factor of three due to the Purcell effect when the distance between the quantum emitter and HMM is nominally as small as 10 nm, which coincides well with the results of our theoretical analysis. Besides, an effect of the coupling-induced long wavelength shift of the exciton emission spectrum is detected and modeled. These results can be of i…

Lipoperoxyl radical scavenging activity of the phytochemical betanin and its aglycone in aqueous/lipid membrane system. Kinetics and mechanistic aspe…

2009

Biogenic Fenton process - A possible mechanism for the mineralization of organic carbon in fresh waters.

2020

To explore the mechanisms that mineralize poorly bioavailable natural organic carbon (OC), we measured the mineralization of OC in two lake waters over long-term experiments (up to 623 days) at different pH and iron (Fe) levels. Both the microbial and photochemical mineralization of OC was higher at pH acidified to 4 than at the ambient pH 5 or an elevated pH 6. During 244 days, microbes mineralized up to 60% of OC in the 10-mu m filtrates of lake water and more than 27% in the 1-mu m filtrates indicating that large-sized microbes/grazers enhance the mineralization of OC. A reactivity continuum model indicated that the acidification stimulated the microbial mineralization of OC especially i…

Changes in Oxidative Stress Index and Lipid Peroxidation Product in the Brain of Rats with Lesion of Central Dopaminergic System after Propofol Admin…

2019

Propofol is a commonly used intravenous anesthetic agent with antioxidant properties. However, the effect of propofol on oxidative stress index (OSI) and lipid peroxidation in Parkinson’s disease is still unknown. The present study aimed to evaluate the effect of propofol on OSI and malondialdehyde (MDA) level in the selected brain regions of the rats with Parkinson’s disease (PD). 32 male Wistar rats were divided into four groups: I- control group, II- group with PD, III-control group with propofol, IV-PD group with propofol. 60mg/kg of propofol was given to the 8-weeks-old rats intraperitoneally, and the selected parts of the rats’ brains (frontal cortex, striatum, thalamus and hippocampu…

High Lipid Content of Prey Fish and n−3 PUFA Peroxidation Impair the Thiamine Status of Feeding-Migrating Atlantic Salmon (Salmo salar) and Is Reflec…

2022

Signs of impaired thiamine (vitamin B1) status in feeding-migrating Atlantic salmon (Salmo salar) were studied in three Baltic Sea areas, which differ in the proportion and nutritional composition of prey fish sprat (Sprattus sprattus) and herring (Clupea harengus). The concentration of n−3 polyunsaturated fatty acids (n−3 PUFAs) increased in salmon with dietary lipids and n−3 PUFAs, and the hepatic peroxidation product malondialdehyde (MDA) concentration increased exponentially with increasing n−3 PUFA and docosahexaenoic acid (DHA, 22:6n−3) concentration, whereas hepatic total thiamine concentration, a sensitive indicator of thiamine status, decreased with th…

Rainwater draining in historical buildings: local specificities and techniques

2013

Se trattati e manuali descrivono compiutamente la "regola dell'arte" riferita ai sistemi costruttivi di maggiore diffusione, il più delle volte riconoscibili in ambiti sovranazionali e nelle architetture di maggiore livello, così non è per quelle soluzioni tecniche tipiche di periodi storici ed aree limitate, importanti nella formazione dell'identità del luogo, la cui conoscenza è legata ad una tradizione effimera raramente oggetto di analisi, di attenzione e di valorizzazione. In questa sede si fa riferimento ai sistemi per il convogliamento o l’allontanamento dell’acqua piovana dagli edifici, in cui lo studio dell’architettura storica fornisce una vasta gamma di casi in cui la tecnologia …

On the Way to Optoionics

2020

Discussions with Michael Grätzel, Ursula Röthlisberger, Robert A. Evarestov and Bettina V. Lotsch are gratefully acknowledged.

2020

Introduction Adolescents’ physical activity (PA) behavior can be driven by several psychosocial determinants at the same time. Most analyses use a variable-based approach that examines relations between PA-related determinants and PA behavior on the between-person level. Using this approach, possible coexistences of different psychosocial determinants within one person cannot be examined. Therefore, by applying a person-oriented approach, this study examined a) which profiles regarding PA-related psychosocial variables typically occur in female sixth-graders, b) if these profiles deliver a self-consistent picture according to theoretical assumptions, and c) if the profiles contribute to the…

Succesio ab intestato: Concerning the death of Rodrigo de Mendoza, I Marquis of the Cenete

2017

La muerte de Rodrigo de Mendoza, I marqués del Cenete, sin testamento se vio envuelta de la incertidumbre propia del fallecimiento de un noble con un cuantioso patrimonio heredado en gran parte de su padre, el gran cardenal de España, sin especificar ni repartir y con tres hijas menores huérfanas sin un albacea designado por él. El gobernador general de Valencia, Lluís de Cabanyelles, del círculo más íntimo del marqués durante su estancia en la ciudad del Turia, junto a otros partícipes y testigos, impulsó el proceso de inventariado de todos sus bienes cuatro días después de su defunción, apelando, asimismo, al emperador Carlos V para que confirmase al virrey del reino de Valencia y hermano…

Facilitators, teachers, observers, and play partners : Exploring how mothers describe their role in play activities across three communities

2019

The present study explored the perspectives of mothers from three communities regarding their role in play activities with their toddlers. The mothers of two-year-old children from Muenster, Germany (n = 34), Chennai, India (n = 36), and New York City, USA (n = 36), participated in the study. Qualitative content analysis was utilized to analyze the mothers' responses to semi-structured interview questions. Four roles were identified as characterizing the mothers' narratives, namely mothers as facilitators, teachers, play partners, or observers. The goal of facilitator was to support children's autonomy; teachers often described educational learning goals; and play partners and observers hig…