http://nopr.niscair.res.in/handle/123456789/1355 Search the Channel search http://nopr.niscair.res.in/simple-search http://nopr.niscair.res.in/handle/123456789/1367 Title: Reinforced embankments and sub base using demolition waste <br/> <br/>Authors: Kumar, Praveen; Reddy, M Ramanjaney <br/> <br/>Abstract: Jute reinforcement has been tried with demolition waste in embankments and sub base construction. Optimum position of jute geotextile has been found 1/3 H from surface. By using jute geotextile, shear strength parameters such as cohesion(C) developed marginally and angle of internal friction (φ ) increased from 31.50° to 38°. With increase in natural aggregate (NA) in blended mixture, maximum dry density (MDD) increases, mainly because of lower particle density and higher water absorption of recycled aggregates (RAs) compared to NAs. CBR values of a mix of RA and NA (60: 40) has been found over 30%, which is minimum CBR value for roads of high traffic volume. <br/> <br/>Page(s): 386-391 http://nopr.niscair.res.in/handle/123456789/1366 Title: Comparison of drying characteristics and quality of copra obtained in a forced convection solar drier and sun drying <br/> <br/>Authors: Mohanraj, M; Chandrasekar, P <br/> <br/>Abstract: An indirect forced convection solar drier integrated with sensible heat storage material has been fabricated and tested for copra drying. It reduces moisture content (wet basis) from 52% to 7.8% and 9.5% in 66 h for trays at bottom and top respectively. System pickup efficiency varies between 45% and 13%. Copra obtained was graded as 76% milling copra grade1 (MCG1), 18% MCG2 and 6% MCG3. Specific moisture extraction rate was estimated to be 0.84 kg/kWh. In sun drying, moisture content reduced from 52.3% (wet basis) to about 9.2% in 7 days. Copra obtained was graded as 53% MCG1, 24% MCG2 and 23% MCG3. Average drier thermal efficiency of sun drying was estimated to be about 21%. <br/> <br/>Page(s): 381-385 http://nopr.niscair.res.in/handle/123456789/1365 Title: Biodeteriorative impacts on bridges over Zayand-e-Rood river (Iran): Role of mosses and their control measures <br/> <br/>Authors: Shirzadian, S; Uniyal, P L <br/> <br/>Abstract: This study presents role of mosses in biodeterioration of Zayand-e-Rood bridges as well as their elimination / control methods. Mosses provide a suitable habitat for small organisms and a base for proliferation and invasion of higher plants that accelerate deterioration due to penetration of their roots. Environmental factors in biodeterioration (pH, water, relative humidity and temperature) were determined and chemical analyses of moss specimens were carried out. <br/> <br/>Page(s): 377-380 http://nopr.niscair.res.in/handle/123456789/1364 Title: Solid supported synthesis of 2-mercaptobenzimidazole derivatives using microwaves <br/> <br/>Authors: Narkhede, H P; More, U B; Dalal, D S; Mahulikar, P P <br/> <br/>Abstract: 2–Mercaptobenzimidazole(MBI) derivatives having substituent at either nitrogen or sulphur of a thioamide ring exhibit biological activity. MBI derivatives were synthesized in moderate to high yields in a short time to give pure required products by using solid support such as silica gel / neutral alumina / fly ash under microwave assisted solventless conditions. <br/> <br/>Page(s): 374-376