Using density-functional theory within the generalized gradient approximation, we investigate the interaction between atomic oxygen and Cu 100 and Cu 110 surfaces. We consider the adsorption of oxygen at various on-surface and subsurface sites of Cu 100 for coverages of 1/8 to 1 monolayers ML . We find that oxygen at a coverage of 1/2 ML preferably binds to Cu 100 in a missing-row surface recon...

in industrial applications, most materials are exposed to wear and friction because multiple conditions are used. however, the tribological properties of these materials can be improved with different techniques. one such technique that improves the frictional property of a surface is the use of self-lubricating coatings. in this study, multicomponent coatings of nominal composition cu-ni3al-mo...

a r t i c l e i n f o a b s t r a c t The presence of callous–unemotional (CU) traits designates an important subgroup of antisocial youth. To improve upon existing measures, the Inventory of Callous–Unemotional Traits (ICU) was developed to provide an efficient, reliable, and valid assessment of CU traits in samples of youth. The current study tests the factor structure and correlates of the I...

here we present our experimental results in synthesizing au-cu nano-particles with tunable localized surface plasmon resonance frequency through wet-chemical at temperature room. the reaction is performed in the presence of ascorbic acid as a reducing agent and polyvinyl pyrrolidone as capping agent via four different procedures: (1) mixture of 90% haucl4 and 10% cuso4.5h2o precursors, (2) mixt...

Seedlings of Theobroma cacao CCN 51 genotype were grown under greenhouse conditions and exposed to increasing concentrations of Cu (0.005, 1, 2, 4, 8, 16, and 32 mg Cu L(-1)) in nutrient solution. When doses were equal or higher than 8 mg Cu L(-1), after 24 h of treatment application, leaf gas exchange was highly affected and changes in chloroplasts thylakoids of leaf mesophyll cells and plasmo...

− T h e cap aci t an ce can b e cal cu l at ed f r o m t h e i m p edan ce m o du l u s v al u e o f t h e o b j ect u n der t est . I t i s p o ssi b l e, i f a t w o -t er m i n al n et w o r k i s r ep r esen t ed b y a ser i es co n n ect i o n o f a r esi st o r an d a cap aci t o r an d t h e r eact an ce o f t h e cap aci t o r i s co n si der ab l y gr eat er t h an t h e r esi st an ce...

Ag-specific CD4+ T cells are present in peripheral blood in low frequency, where they undergo recruitment and expansion during immune responses and in the pathogenesis of numerous autoimmune diseases. MHC tetramers, which constitute a labeled MHC-peptide ligand suitable for binding to the Ag-specific receptor on T cells, provide a novel approach for the detection and characterization of such ra...

The temperature variations of the 6 3 Cu, 6 5 Cu and 5 V N M R spectra and 5 V spin-lattice relaxation rate 1 / T have been measured in a thiospinel CuV 2 S 4 . Drastic changes in the spectra and relaxation rates were observed at the charge density wave (CDW) transition temperature. With decreasing temperature T, 1 /Ti decreases exponentially due to the C D W transition (75 K < T< 90 K). The en...

The synthesis of ligand L(T)H8, based on a thiophene framework containing two bis(aminomethyldiphosphonate) functions in the ortho position to the central sulfur atom, is described, together with the characterization of the intermediate compounds. The physico-chemical properties of the ligand were first studied by means of potentiometry and UV-Vis absorption spectrophotometric titrations to det...