The synthesis of micro-sized, uniformly distributed Al2O3-15Vol% Ni powders were studied through three step co-precipitation of hydroxides mixtures from proper solution, calcination at air atmosphere and final step of calcined powders in a carbon bed. Al and Ni hydroxide and amorphous phase were first obtained from their salt’s solutions through chemical co-precipitation method by adjusti...

The fate of char-N (nitrogen removed from the coal matrix during char oxidation) has been widely studied at fluidized bed conditions. This work extends the study of char-N to pulverized coal conditions. Coal chars from five parent coals were prepared and burned in a laboratory-scale pulverized coal combustor in experiments designed to identify the parameters controlling the fate of char-N. The ...

The presence of 2,3,7,8-tetrachlorodibenzo-p-dioxin in 2,4,5-trichlorophenoxy acid est-ers was shown to originate from 2,4,5-tri-chlorophenol used in industrial processes. The dimerization is thought to occur when the phenol is produced from the corresponding tetrachlorobenzene by the action of alkali. Logically all products originating from chlorinated benzenes treated with alkali are possible...

This study is investigate to ecological characters, ethnopharmacology, total phenols (TP), flavonoids (TF), anthocyanins (TA) contentand antioxidant capacity in leaves and fruit of Vaccinium arctostaphylos L. from two natural habitats from Gilan provinve, which has been used as a heart tonic ,anti diabeteand anti tumor. Ecological requirements were obtained in many field observation, ethno phar...

The research was conducted in Branggah Village, Lumbang District, Probolinggo Regency, from March to June 2020. This study aimed determine the effectiveness of using containers and AB mix nutrient concentrations on growth production white pakcoy plants (Brassica Rapa L) a hydroponic wick system. . design used factorial randomized block (RBD), which consisted two factors: 1. system container mat...

In this study, we assess the impact of normal aging on top-down modulation, a cognitive control mechanism that supports both attention and memory by the suppression and enhancement of sensory processing in accordance with task goals. Using fMRI (functional magnetic resonance imaging), we show that healthy older adults demonstrated a prominent deficit in the suppression of cortical activity asso...

We have shown earlier, that an oxygen impurity content of >0.4 at.% (4000 ppm) strongly degrades the hardness of the nc-TiN/a-Si3N4 nanocomposites. Here we show that such impurities also hinder the phase segregation and formation of stable and strong nanostructure consisting of 3-4 nm size TiN nanocrystals "glued" together by about 1 monolayer thick interfacial Si3N4-like layer, thus apparently...

this study is investigate to ecological characters, ethnopharmacology, total phenols (tp), flavonoids (tf), anthocyanins (ta) contentand antioxidant capacity in leaves and fruit of vaccinium arctostaphylos l. from two natural habitats from gilan provinve, which has been used as a heart tonic ,anti diabeteand anti tumor. ecological requirements were obtained in many field observation, ethno phar...