http://nopr.niscair.res.in/handle/123456789/1101 Search the Channel search http://nopr.niscair.res.in/simple-search http://nopr.niscair.res.in/handle/123456789/1330 Title: Electrical properties of biological wastes used as effective soil conditioners for electrical earthing <br/> <br/>Authors: Anyasi, Francis I; Obinabo, Edwin C <br/> <br/>Abstract: Resistivity of cow waste, chicken waste, ashes, decayed sawdust, garden soil or earth and laterite soil is determined in perspective of improving electrical conductivity of the earth. Effect of moisture on resistivity of samples is considered. Using soil Box method, study revealed that ashes have the lowest resistivity (1.04 Ω-m), followed by chicken waste (5.84 Ω-m) and cow waste (9.88 Ω-m). Present study recommends these biological wastes as cheap sources of reducing soil resistivity of earth around embedded electrodes for electrical earthing <br/> <br/>Page(s): 873-879 http://nopr.niscair.res.in/handle/123456789/1329 Title: Performance assessment and optimization of thermal power plants by DEA BCC and multivariate analysis <br/> <br/>Authors: Azadeh, A; Ghaderi, F; Anvari, M; Izadbakhsh, H; Dehghan, S <br/> <br/>Abstract: This study presents an integrated Data Envelopement Analysis (DEA) methodology using Banker Charnes Cooper (BCC) input oriented model for assessment and optimization of conventional thermal power plants (gas, steam and combined cycles). Installed capacity, fuel consumption, labor cost, internal power, forced outage hours and operating hours are used as input parameters whereas total power generation is used as output parameter. Moreover, 40 power plants in Iran were used as decision-making units and DEA-BCC model was used to assess their efficiency and rank during 1997-2000. Principal Component Analysis (PCA) and Numerical Taxonomy (NT) together with Spearman correlation technique were used to verify and validate the findings of DEA-BCC approach. In addition, all regional power plants have been ranked, assessed and optimized in comparison with all thermal power plants. <br/> <br/>Page(s): 860-872 http://nopr.niscair.res.in/handle/123456789/1328 Title: Evaluation of cooking processes for Trema orientalis pulping <br/> <br/>Authors: Jahan, M Sarwar; Rubaiyat, A; Sabina, R <br/> <br/>Abstract: Chemical and morphological properties support Trema orientalis as a new source for pulping (yield, 46-52%). Using soda, soda-anthraquinone (AQ), kraft, alkaline-sulfite-anthraquinone-methanol (ASAM), acetic acid (AA) and formic acid (FA) pulping processes, ASAM pulp (yield, 51.7 %; kappa number, 13.4) showed excellent initial brightness (53.2 %), which indicated better bleachability. Prebleaching of pulps by oxygen, peroxyaid and xylanase treatments, indicated O₂-prebleaching reduced kappa number (44-53%). Prebleached pulps were bleached in Chlorine dioxide-Extraction-Chlorine dioxide (DED) and Chelation-Peroxie-Peroxide (QPP) bleaching sequences. ASAM and kraft pulps exhibited better brightness than soda-AQ pulp. Viscosity of bleached pulp from kraft process was lower than that of soda-AQ and ASAM processes. Strength properties of pulps from soda, soda-AQ, kraft and ASAM processes were acceptable. The a-cellulose (> 94 %) in FA pulp suggests further study for dissolving pulp. <br/> <br/>Page(s): 853-859 http://nopr.niscair.res.in/handle/123456789/1327 Title: Removal of endosulfan residues from vegetables by household processing <br/> <br/>Authors: Randhawa, M Atif; Anjum, F Muhammad; Asi, M Rafique; Butt, M Sadiq; Ahmed, Anwaar; Randhawa, M Saqib <br/> <br/>Abstract: Effect of washing, peeling and cooking on endosulfan residue (ER) levels was determined in winter (spinach, cauliflower, potato) and summer vegetables (brinjal, tomato, okra) grown under controlled supervised field trials. Highest ER was found at raw stage in brinjal (2.43 mg/kg) followed by okra (1.83 mg/kg) and spinach (1.25 mg/kg) and lowest in potato (0.177 mg/kg). ER in vegetables was found to be reduced as follows: washing, 15-30; peeling, 60-67; and cooking, 13-35%. High levels of ERs exceeding maximum residue limits (MRLs) were observed in brinjal and tomato samples at raw stage. However, vegetable household processing reduced ER below the MRLs. <br/> <br/>Page(s): 849-852