Indian Materials Congress® 

Ashutosh Tiwari

Volume 5, Issue 1 , January 2014, Pages 1-1

  We are pleased to announce Indian Materials Congress® (IMC). It will be an annual event organised by Vinoba Bhave Research Institute, India during 08-11 December each year from 2014. The goal of Congress is to provide a global platform for Indian researchers and engineers coming from academia and ...  Read More

Dtermination Of Critical Coagulation Concentration Of Silicon Nanoparticles

Jiangang Wei;Edward Khun

Volume 5, Issue 1 , January 2014, Pages 2-5

  This paper investigated the determination of critical coagulation concentration using a time-resolved dynamic light scattering technique. Silicon nanoparticles were used as model nanoparticles. Zeta potential of silicon nanoparticles were quantified using a zetasizer. The key results of this study show ...  Read More

Dissolution of Silver Nanoparticles In Presence of Natural Organic Matter

Zhang Linlin; Kulukawa Tanaka

Volume 5, Issue 1 , January 2014, Pages 6-8

  This study investigated the dissolution kinetics of silver nanoparticles in presence of natural organic matter. Silver nanoparticles were synthesized using chemical reduction method. Particle size and surface charges of the synthesized silver nanoparticles were characterized using a zetasizer. ICP-MS ...  Read More

Temperature dependent raman spectroscopy of La1−xCaxMnO3 (x = 0.0 and 0.3) 

Khalid Sultan; M. Ikram;K. Asokan; Zubida Habib; Asima Jan; Sajad Ahmad Mir

Volume 5, Issue 1 , January 2014, Pages 9-13

  Temperature-dependent Raman spectroscopy of polycrystalline bulk samples of La1−xCaxMnO3 (x = 0.0, and 0.3) synthesized by solid-state reaction method is presented. As the temperature is decreased, there is significant change in intensity and full-width half maxima of all major Raman modes. This ...  Read More

Phenomenological analysis of the s-d exchange interaction in dilute Cu-Mn alloy at helium temperature

M.A. AL-Jalali

Volume 5, Issue 1 , January 2014, Pages 14-16

  The S-d exchange interactions in dilute Cu-Mn alloys was studied on concentration (C) varying between 10.5 and 2081.8 ppm of Mn in Cu within the (0.03K–4.2K) temperature range. Using electrical resistivity data on those alloys, the s-d exchange integral (Jsd), which is negative, has calculated ...  Read More

Diastase α-amylase immobilization on sol-gel derived guar gum-gelatin-silica nanohybrid

Vandana Singh; Devendra Singh

Volume 5, Issue 1 , January 2014, Pages 17-23

  In the present communication, we report on diastase alpha amylase immobilization at guar gum-silica nanohybrid material (H5). The immobilized amylase (H5-Amyl) showed significantly higher bioactivity (21.62 U mg -1 ) as compared to free amylase (15.59 U mg -1 ) in solution at pH 5 and temperature 40°C. ...  Read More

Novel biodegradable polymeric flocculants based on cationic polysaccharides  

R. P. Singh; Sagar Pal; Sk. A. Ali

Volume 5, Issue 1 , January 2014, Pages 24-30

  Novel flocculants for wastewater and industrial effluents treatment have been developed in authors’ laboratory based on modified polysaccharides. These flocculants have unique characteristics i.e. they are efficient with low dose usage like synthetic flocculants (e.g. polyacrylamide) and controlled ...  Read More

Electrical properties of Ir/n-InGaN/Ti/Al Schottky barrier diode in a wide temperature range

R. Padma; V. Rajagopal Reddy

Volume 5, Issue 1 , January 2014, Pages 31-38

  The temperature dependent current-voltage (I-V) and capacitance-voltage (C-V) characteristics of Ir/n-InGaN Schottky contacts have been investigated and analysed in the temperature range of 100-400 K. The estimated barrier heights and ideality factor of Ir/n-InGaN Schottky diode are 0.30 eV (I-V), 1.15 ...  Read More

Characterization of stiffened circumferentially cracked pipe with fiber reinforced polymer composite
Volume 5, Issue 1 , January 2014, Pages 39-43

  In this work the fiber reinforced polymer FRP patch is utilized to restore damaged metallic pipe with outer part through circumferential crack. A circumferential patch was employed to cover the full surface of the pipe at the cracked area. Linear elastic fracture mechanics LEFM scheme and finite element ...  Read More

Ring opening polymerization of lactide by using zinc prolinate catalyst 

Asutosh Kumar Pandey

Volume 5, Issue 1 , January 2014, Pages 44-51

  Zinc salts of L-proline, D-proline were used in homopolymerization of L, L-lactide and D, L-lactide. Linear PLA oligomer with Mn 2900-3400 Da, can be prepared with zinc (L-prolinate)2 catalyst. Less racemization were occurred in presence of Zn (L-prolinate)2 than Zn (D-prolinate)2. The catalyst structure ...  Read More

Mixed influence of copper and some f-block elements on thermoluminescence intensity of CaSO4: Dy, P phosphors  

J. A. Wani; N. S. Dhoble; S. J. Dhoble

Volume 5, Issue 1 , January 2014, Pages 52-58

  Very little data on copper co-doped CaSO4: Dy and CaSO4: Dy, P phosphors seems to have been reported so far. In the present study the influence of copper and rare earths co-doping on thermoluminescence intensity of CaSO4: Dy, P phosphor has been investigated. Acid evaporation re-crystallization method ...  Read More