NOPR Collection:

Novel Acid Fixing Reactive Dyestuffs Derived from 5, 10- Phenophosphazine Ring

2014-02-11T16:50:47Z

Title: Novel Acid Fixing Reactive Dyestuffs Derived from 5, 10- Phenophosphazine Ring Authors: Bello, Kasali A; Defeng, Zhao Abstract: The two series of mono azo dyes have been prepared from 2-amino-5,10-dihydro-10-hyd roxy-5-methylphenophosphazine 10-oxide and its 5-methyl analogue by diazotizing and coupling with different coupling components, respectively. The dyes obtained were applied to cotton under acidic condition and the washing fastness properties were evaluated. The dyeings were found to be covalently bonded to cotton when tested with boiling dimethylformamide. Page(s): 818-822

Phosphogypsum Based Composite Binders

2014-02-12T16:50:58Z

Title: Phosphogypsum Based Composite Binders Authors: Singh, M; Garg, M Abstract: The physical properties of the composite binders have been tested and are reported. The composite binder containing slag and other constituents give maximum strength. The performance of the binder in water, as studied by the immersion method, is discussed. The composite binders have been subjected to their use in masonry and plastering and found to possess high strength and high workability than the conventional cement-sand mortars. The use of composite hinders for masonry and plastering works, both in external and internal situations, is recommended. The techno-economic feasibility of the composite binder envisaged for a plant of capacity 50 t/d is presented. Page(s): 812-817

Effect of Waterproof Insulation on Thermal Design of Residential Building—A Case Study

2014-02-11T16:49:52Z

Title: Effect of Waterproof Insulation on Thermal Design of Residential Building—A Case Study Authors: Verma, V V; Suman, B M; Agarwal, K N Abstract: Paper presents cooling load comparison of building with waterproof insulated roof section and the building with moist and conventional sections. Influence of moisture on overall thermal performance, heat gain factors and indoor air temperature of the envelop have also been dealt with. The study is based on the work done at Central Building Research Institute (CBRI), Roorkee, which gives a simple alternate method to compute indoor air temperature of the envelop. It requires to compute total heat gain through all its components of the building. Net heat gain averaged over the entire surface of a building is correlated with indoor air temperature. A single storied residential building comprising two rooms and a kitchen are taken into consideration. In high humidity prevailing condition the absorbed moisture in building sections increases and as a result there is a change in thermophysical properties of the material. Therefore, thermal transfer functions and indoor environment change accordingly. Page(s): 806-811

Ultrasound Study of Bone with Cystic Lesion

2014-02-14T16:50:15Z

Title: Ultrasound Study of Bone with Cystic Lesion Authors: Bhatia, Kirti Gandhi; Singh, V R; Bansal, M C; Bhatia, Sanjiv Abstract: Ultrasonic parameters of bone cyst, a non-neoplastic tumour, are determined in vitro. Average ultrasonic propagation velocity and attenuation are found to be in the range 1602 to 1669 ms^-1 and 1846 to 2181 dBm^-1, respectively. The causes and variation in such values of propagation velocity and attenuation arc the porosity and complex nature of the samples used. A direct technique for the diagnosis and differentiation of abnormal bone can be developed after proper standardization of the data. Page(s): 802-805