Highlights We examined the microstructure evolution of BiSb–Te films during post-annealing. https://www.88gallery.co.uk The microstructure of the BiSb–Te was nano-crystalline in the as-deposited state. The grains of nano-crystalline were found to be the stable Bi 2 Te 3 -type phase. The BiSb–Te thin film was based on the grain growth process.https://en.wikipedia.org/wiki/Sildenafil The grain growth influenced the ZT value in the positive direction. Abstract This paper reports the results of a study on the microstructure evolution of sputtered BiSb–Te thermoelectric films during post-annealing and its effects on their electronic transport and thermoelectric properties. 88gallery Combining X-ray diffraction, transmission electron microscopy, and Raman spectroscopy, we illuminate the fundamental aspects of the microstructure evolution: the as-deposited film… was Bi 0.5 Sb 1.5 Te 3 compound in the Bi 2 Te 3 -type phase with a nano-crystalline microstructure and the post-annealing prompted a drastic grain growth. The electrical and thermoelectric properties also closely changed following the trend of the grain growth. The Seebeck coefficient, electron mobility, and thermal conductivity increase while the carrier concentration remains flat. kamagra now The ZT value escalates systematically with the annealing time increasing, reaching around 0.94 after 12h annealing.
Abstract In Moldova more than 95% of all drinking water for rural and urban settlements is drawn from groundwater sources and serves as the main source of drinking water for about 65% of the population. Moldovan citizens have witnessed significant deterioration of water supply services and a virtual cessation of wastewater treatment. https://www.88gallery.co.ukThe data show that 47% of the Moldovan population had no access to safe drinking water and 54.8% had no water piped to their households. The quality of surface and groundwater of the country in most cases does not reach the European and international standards. kamagra now uk The transboundary impact is very important for the relations between Ukraine, Moldova and Romania and affects the socio-economic life of population.88gallery Problems such as the hydro-electric power station… construction on the River Nistru, flow of waste-water, biodiversity of the River Nistru, use of water of the Nistru and Prut for irrigation affect Moldova and its neighbours and must be resolved by mutual consent. In this regard, the Moldovan Government has concluded bilateral agreements with Romania and Ukraine.
The products formed by thermally induced isomerization of trilinolein and trilinoelaidin at 250 °C were studied by infrared spectroscopy and gas chromatography. The triglycerides of the 9c12c and 9t12t fatty acids, linoleic and linoelaidic acid respectively, were subjected to thermal treatment under nitrogen in glass.kamagra store The products were removed at regular intervals and analysed by infrared spectroscopy using a single reflectance attenuated total internal reflectance crystal accessory. Trans-esterification of the products provided the corresponding fatty acid methyl esters which were studied by gas chromatography.https://www.88gallery.co.uk The results show that the samples undergo decomposition and isomerization. 88gallery Thermally induced 9c12c fatty acid (linoleic acid) molecules in the trilinolein molecules isomerize into… 9c12t, 9t12c and 9t12t isomers. Thermally induced 9t12t fatty acid (linoelaidic acid) molecules in the trilinoelaidin molecules isomerize into 9c12t, 9t12c and 9c12c isomers.