http://nopr.niscair.res.in/handle/123456789/10474 Search the Channel search http://nopr.niscair.res.in/simple-search http://nopr.niscair.res.in/handle/123456789/10503 Title: Thermal degradation and burning behaviour of cellulose based and cellulose-silk blended upholstery fabrics <br/> <br/>Authors: Muralidhara, K S; Sreenivasan, S <br/> <br/>Abstract: This study presents thermal degradation and burning behaviour of cellulose based and cellulose-silk blended upholstery fabrics treated with phosphorus (chemical A) and halogen (chemical B) based flame retardant (FR) chemicals. Char content increased substantially in all samples after treatments. Calculated activation energy (E_a) was found as follows: control cotton(CP), 196.5; cotton+flax (CF), 213.3; and cotton+silk (CS), 254.6 kJ/mol. Calculated E_a&nbsp;after treatment with chemical A and chemical B, respectively, was reduced to: CP, 38.2, 130.6; CF, 96.2, 151.3; and CS, 97.7, 152.0 kJ/mol. Char length, after glow and rate of flame spread, were changed significantly after chemical was applied onto samples. Effect of FR reduced after treated fabrics were washed for 3 repeated cycles; rate of flame spread and char length were significantly lower when compared to control samples. Thus impregnation of FR on cellulose and silk made them force out water vapour under initial burning condition and thereby resisted burning. <br/> <br/>Page(s): 879-885 http://nopr.niscair.res.in/handle/123456789/10502 Title: Estimation of effective thermal conductivity of two-phase materials using line heat source method <br/> <br/>Authors: Kumar, A P Senthil; Raja, V Prabhu; Karthikeyan, P <br/> <br/>Abstract: This study presents fabrication of an experimental setup based on line heat source method and automate data acquisition software (LabVIEW) was used to measure thermal conductivity (TC) of two-phase materials (TPMs) with various temperatures. TC measurement of various TPMs has been carried with a minimum value (0.178 W/m°C) for saw dust and maximum value (0.64 W/m°C) for iron powder. Reliability tests were conducted on glycerin to validate experimental set-up. Using TC values at different temperatures, thermal diffusivity can also be found out. Thermal probe method of determining TC is one of the best methods available owing to its simplicity and ease of construction and usage. <br/> <br/>Page(s): 872-878 http://nopr.niscair.res.in/handle/123456789/10501 Title: Performance of CFC free propellant- driven MDI of fluticasone propionate <br/> <br/>Authors: Murthy, T E G K; Priya, M Bala Vishnu; Satyanarayana, V <br/> <br/>Abstract: Metered dose inhalers (MDIs) of fluticasone propionate were developed for treatment of asthma and chronic ob­structive pulmonary disease. MDIs with hydrofluoroalkanes based propellants were formulated with various doses, overages and various concentrations of alcohol. Optimum requirements were found as follows: effective valve delivery, overdoses (15%); 100% drug delivery, overages (20%); and emitted dose and fine particle fraction, alcohol content (5-10%). <br/> <br/>Page(s): 866-871 http://nopr.niscair.res.in/handle/123456789/10500 Title: Study on enzyme-assisted aqueous extraction of oil from soybean <br/> <br/>Authors: Qian, Jun-Qing; Qin, De-Huai; Xie, Xiang-Mao; Zhou, Wen-Wu <br/> <br/>Abstract: This study presents enzyme-assisted aqueous extraction (EAAE) method for oil extraction from soybean. Parameters for EAAE of oil with 1398 neutral protease were optimized through single-factor and orthogonal test. Soybean oil (yield, 80.2% w/ w) was achieved under following optimized conditions: enzyme (conc., 840 IU / g soybean; pH, 7.0); enzymatic hydrolysis (temp., 45°C; time, 1.5 h); ratio of petroleum ether to soybean oil, 4:1(v/w); extraction (temp., 30°C; time, 15 min; pH, 4.5); and centrifugation force, 1400×g. <br/> <br/>Page(s): 860-865