Journal of Scientific & Industrial Research

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VOLUME 69

NUMBER 11

NOVEMBER 2010

CONTENTS

Management & Information Technology

811

Track control in automated welding of saddle curve



Yan L, Xincheng Tian & Jun Liang

This study establishes trajectory model and welding torch pose model, and presents a four-axis (θ, y, r and η) interpolation algorithm for saddle curve (SC) automatic welding. Algorithm is simulated to verify its feasibility by simulating SC with MATLAB and OpenGL tool software.

S & T and Industrial Research

818

Agro-ecological zoning of brown planthopper [Nilaparvata lugens (Stal)] incidence on rice (Oryza sativa L.)







D S Yadav , Subhash Chander & K Selvaraj

Multiple linear regression models (pest-weather models) were developed between monthly mean brown planthopper (BPH), Nilaparvata lugens light trap catches and monthly mean values of minimum temperature (Tmin), maximum temperature (Tmax), morning relative humidity (RH1) and evening relative humidity (RH2) observed at Maruteru, Andhra Pradesh during 2000-2007 kharif seasons. Comparison between predicted and observed BPH light trap catches at Nellore (kharif 2004 and 2005), Ragolu (kharif 2003-2007) and Rajendranagar (kharif 2005 and 2007) evinced very high level of congruence between them, thereby validating agro-ecological zoning of BPH incidence in Andhra Pradesh.

823

A novel miniaturized loaded line phase shifter



















V K Manoharan, S Sindhuja,
S Deepak Ram Prasath, S Raju &
V Abhaikumar

This study proposes a novel design of phase shifter for WLAN applications, by using Koch fractal curves to reduce size of conventional loaded line phase shifter (PS). Proposed PS provides an area reduction (41.88%) in comparison with conventional PS.

S & T and Industrial Research

830

Electroless Ni-P-Cg(graphite)-SiC composite coating and its application onto piston rings of a small two stroke utility engine


















Farhad B Bahaaideen, Zaidi Mohd Ripin & Zainal Arifin Ahmad

This study presents electroless Ni-P-Cg (graphite)-SiC composite coating deposition onto piston rings of a small two stroke utility engine at 90C under Cg (10 g/l) and SiC (8 g/l) concentration at agitation speeds of 160 rpm. Coating showed compact embedding of Cg and SiC particles in Ni matrix, uniformly and largely distributed in coating by mechanical stirring. Heat-treatment of coating increased microhardness due to crystallization of a hard Ni3P phase after heat treatment.

835

Decontamination of 2 chloro ethyl phenyl sulphide using mixed metal oxide nanocrystals






























G K Prasad

Decontamination reaction of 2 chloro ethyl phenyl sulphide (2-CEPS), a surrogate of sulphur mustard, was studied on nanocrystals of AP-Al2O3, AP-Al2O3-Fe2O3, AP-Al2O3-V2O5 and AP-Al2O3-CuO by using gas chromatography, gas chromatography-mass spectrometry and infrared spectroscopy techniques. Decontamination of 2-CEPS resulted via hydrolysis, oxidation and formation of surface bound alkoxides on AP-Al2O3-V2O5, whereas on AP-Al2O3, AP-Al2O3-Fe2O3 and AP-Al2O3-CuO, decontamination of 2-CEPS resulted by hydrolysis and formation of surface bound alkoxides.

S & T and Industrial Research

841

Thermal ageing studies of bromo-butyl rubber used in NBC personal protective equipment


















G K Kannan, L V Gaikewad, L Nirmala &
N S Kumar

This study evaluates degradation and stability of bromo-butyl rubber (BBR) used in NBC personal protective equipment. Elongation increased by 10% when BBR was exposed to -65C as well as 100C. Tensile strength decreased by 50% when exposed to -65C and also at 55C, and decreased to around 63% when exposed to 80 and 100C. Morphological appearance at 80C aged sample was intact and comparable with unaged samples. BBR exposed to 120C developed minor cracks (<0.01 μm). Life prediction was 89 and 25 years for exposed usage temperature of 40 and 50C respectively.

850

Prebiotic potential of juice grape varieties and some hybrids



















Vaishali Agte, Neelima Khetmalis, Smita Nilegaonkar, Surekha Karkamkar &
Supriya Yadav

This study presents prebiotic potential of 9 grape varieties [4 marketed juice grapes (G1, G2, G3, and G9) and 5 hybrids (G4, G5, G8, G10 and G12)] using 4 individual probiotics and a consortium. Marketed fructooligosaccharide (FOS) was used as a standard prebiotic. G10 showed higher growth response to Lactobacillus acidophilus and L. delbrueckii and reduced Escherichia coli counts with zone of inhibition against E. coli. Inhibititory activity of α amylase as IC50 was lowest for G1 and G10. All grape varieties and hybrids showed prebiotic activity (21.2-72.5% of FOS) with G1 and G10 being promising types.

855

β-Galactosidase production and ethanol fermentation from whey using Kluyveromyces marxianus NCIM 3551




A M Gupte & J S Nair

β-Galactosidase production and ethanol fermentation from whey were studied using Kluyveromyces marxianus NCIM 3551 at laboratory scale. Optimum β-galactosidase production and ethanol fermentation was obtained with 16 h old culture at an inoculum size of 10% over an incubation period of 20 h at pH 5.0 and at 25C.

S & T and Industrial Research

860

Study on enzyme-assisted aqueous extraction of oil from soybean





Jun-Qing Qian, De-Huai Qin, Xiang-Mao Xie & Wen-Wu Zhou

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., 45C; time, 1.5 h); ratio of petroleum ether to soybean oil, 4:1(v/w); extraction (temp., 30C; time, 15 min; pH, 4.5); and centrifugation force, 1400g.

866

Performance of CFC free propellant- driven MDI of fluticasone propionate


















T E G K Murthy, M Bala Vishnu Priya &
V Satyanarayana

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%).

Energy and Environment

872

Estimation of effective thermal conductivity of two-phase materials using line heat source method
















A P Senthil Kumar, V Prabhu Raja &
P Karthikeyan

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/mC) for saw dust and maximum value (0.64 W/mC) for iron powder.

Energy and Environment

879

Thermal degradation and burning behaviour of cellulose based and cellulose-silk blended upholstery fabrics










K S Muralidhara & S Sreenivasan

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. 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.

Author-Reader Platform

886

Instructions to contributors

 
 

Author Index


Abhaikumar V

823

Agte V

850

Ahmad Z A

830

 

 

Bahaaideen F B

830

 

 

Chander S

818

 

 

Gaikewad L V

841

Gupte A M

855

 

 

Kannan G K

841

Karkamkar S

850

Karthikeyan P

872

Khetmalis N

850

Kumar A P S

872

Kumar N S

841

 

 

Liang J

811

L Y

811

 

 

Manoharan V K

823

Muralidhara K S

879

Murthy T E G K

866

 

 

Nair J S

855

Nilegaonkar S

850

Nirmala L

841

 

 

Prasad G K

835

Prasath S D R

823

Priya M B V

866

 

 

Qian J -Q

860

Qin D H

860

 

 

Raja V P

872

Raju S

823

Ripin Z M

830

 

 

Satyanarayana V

866

Selvaraj K

818

Sindhuja S

823

Sreenivasan S

879

 

 

Tian X

811

 

 

Xie X M

860

 

 

Yadav D S

818

Yadav S

850

 

 

Zhou W W

860


Keyword Index


2 Chloro ethyl phenyl sulphide

835

α-Amylase inhibition

850

β-Galactosidase

855

 

 

Activation energy

879

Alcohol fermentation

855

Aqueous Extraction

860

Automated welding

811

 

 

Bluetooth

823

Bromo-butyl rubber (BBR)

841

Brown planthopper

818

 

 

Composite coating

830

 

 

Decontamination

835

 

 

Electroless plating

830

Emitted dose

866

Enzymatic hydrolysis

860

Escherichia coli

850

 

 

Fluticasone propionate

866

FR4

823

 

 

Grape

850

 

 

Kluyveromyces marxianus NCIM 3551

855

Koch fractal

823

 

 

Lactic cultures

850

Loaded line

823

 

 

Metered dose inhalers

866

Microstrip

823

Mixed metal oxides

835

 

 

Nanocrystals

835

NBC equipment

841

Ni-P-Cg(Graphite)-SiC coating

830

Non-Cartesian configuration

811

 

 

Orthogonal test

860

Overages

866

 

 

Pest zoning

818

Pest-weather model

818

Phase shifter

823

Phased array

823

Prebiotic potential

850

 

 

Rate of flame spread

879

Reliability

872

Rice

818

 

 

Saddle curve

811

Soybean Oil

860

Spray pattern

866

 

 

Thermal ageing

841

Thermal conductivity

872

Thermal degradation

879

Thermal oxidation

841

Thermal probe

872

Track control

811

Two-phase materials

872

 

 

Valve delivery

866

Vertical flammability

879

 

 

Weight loss

879

Whey

855

WLAN

823

 

 

Yeast

855