the whole plant, pergularia daemia (family: asclepediaceae), was extracted with 50% alcohol and a fresh batch of the plant material was successively extracted with petroleum ether, ethyl acetate and n-butanol to determine its diuretic activity. the diuretic activity of the different extracts at a dose of 400 mg/kg was assessed orally in rats with furosemide as a standard drug using lipschitzs t...

cold stress is one of the most important environmental stresses for rice especially in temperate and high elevation areas. in present study, the effect of different temperatures, as the main plot, including 25 (control), 10 and 5°c on 12 rice cultivars (including champa yasouj, gerde, lenjan askari, kaamfirouz, kohsar, shafagh, domsiya mamassani, dular, gharib, hasan saraei, mosa tarom and 304)...

Absorption chillers require precise models for their control and optimization. The present work analyzes the behavior of a 10-kW absorption chiller by means four different methods that use external fluid temperatures to situate machine operating conditions, either through characteristic temperature difference or COPcarnot. studied are physical insight levels: semi-empirical method (the equation...

Trong bài báo này, vật liệu LiAlO2 được tổng hợp bằng ba phương pháp khác nhau đã nghiên cứu. Thứ nhất, sol-gel với các tiền chất ban đầu gồm LiNO3, Al(NO3)3.9H2O và C6H8O7. hai, LiALO2 phản ứng pha rắn Li2CO3 γ-Al2O3. ba, chuẩn bị kết EDTA Al(NO3)3.9H2O, C6H8O7 C10H16N2O8 (EDTA). sau khi đánh giá cấu trúc hình thái học hai kỹ thuật điển là nhiễu xạ tia X (XRD) kính hiển vi điện tử quét (SEM). ...

Solid–liquid equilibria in mixed electrolyte aqueous solution have been investigated using available thermodynamic data for solids and for aqueous electrolyte solutions. The mean spherical approximation (MSA) modified by Lu et al. [Fluid Phase Equilib. 85 (1993) 81] is used to calculate the mean ionic activity coefficients in mixed electrolyte solutions at saturation conditions. Solid–liquid eq...

Nowadays it is extremely urgent to seek high performance solid polymer electrolyte that possesses both interfacial stability toward lithium/graphitic anodes and high voltage cathodes for high energy density solid state batteries. Inspired by the positive interfacial effect of vinylene carbonate additive on solid electrolyte interface, a novel poly (vinylene carbonate) based solid polymer electr...

ten solanum tuberosum cultivars and accessions from 11 wild solanum species were evaluated for their tolerance to salt (200 mm nacl or 100 mm na2so4), drought (35% peg), cold (-4ºc) and heat (37ºc). evaluation was based on electrolyte leakage from de-tached leaves of in vitro plantlets. testing involved a rinsing treatment with three changes of distilled water to remove electrolytes from leaf a...

Pure water does not conduct electricity, but any solvated ionic species would contribute to conduction of electricity. An ionically conducting solution is called an electrolyte solution and the compound, which produces the ions as it dissolves, is called an electrolyte. A strong electrolyte is a compound that will completely dissociate into ions in water. Correspondingly, a weak electrolyte dis...