Journal of Scientific & Industrial Research
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VOLUME
69
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NUMBER 6
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JUNE 2010 |
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CONTENTS
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Review
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411
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Applications
of phytase of thermophilic mould, Sporotrichum thermophile: A review
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This study presents a review on applications of phytase from
thermophilic fungal isolate, Sporotrichum
thermophile. Under optimization, improvement in phytase production can be
achieved in both solid state (2-fold) and submerged (2.6-fold) fermentations.
Phytase could also be produced by alginate-immobilized S. thermophile, and enzyme production was sustainable over 5
repeated cycles. Purified phytase is a homopentameric glycoprotein (mol mass,
456 kD) and is optimally active at pH 5.0 and 60°C with a T1/2 of
16 h at 60°C and 90 min at 80°C. It is insensitive to trypsin and pepsin, and
unaffected by EDTA. Phytase has all requisite properties for application as a
feed and food additive, dephytinization of soymilk and wheat flour and soil
conditioner for plant growth promotion.
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Management & Information Technology |
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415 |
Determination of system frequencies in mechanical systems during
shutdown transient |
This study proposed a methodology for system frequency detection of mechanical systems with variable load conditions. Vibration signals from shutting-down transient were analyzed in combined time-frequency domain using wavelet and FFT analyses. Effectiveness of proposed methodology was validated by experimental case study and found that this methodology can be applied to any rotating mechanical system. |
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422 |
Determination
of suitable permutation numbers in comparing independent group means: a monte
carlo simulation study |
In this study, suitable number of
permutations were tried to be determined empirically for permutation test,
one of which alternatively used in analysis of variance (ANOVA). Random
numbers were generated from |
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Management & Information Technology |
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426 |
Intuitionistic
fuzzy set approach for color region extraction |
An improvised technique is proposed in detecting and extracting color regions of an image using intuitionistic fuzzy set (IFS) theory. This will be very useful especially for remotely sensed images where different types of regions (agricultural, watery, or volcanic) are to be extracted. Comparing with non-fuzzy and fuzzy method, results of an extracted image were found better due to consideration of uncertainty in the form of a hesitation degree while defining membership function in IFS.
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S & T and Industrial Research |
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433 |
Voltage rise due to
inter-connection of embedded generators to distribution network |
This study presents voltage control method to increase embedded generation (EG) transfer capability and to ensure distribution network voltage within statutory limits. A typical EG plant and generic 11 KV distribution network was developed. Various scenarios assessed impact of embedded generator on voltage profiles of a network with light and peak load conditions. |
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439 |
Optimisation
of heat affected zone by partial swarm optimisation in air plasma cutting
operation |
This paper presents development of mathematical model for prediction of heat affected zone (HAZ) and optimised parameters for air plasma cutting operation on AISI 6061 aluminium alloy. Experimental and predictive values from RSM are found of same trend. Partial swarm optimisation (PSO) was employed to optimise cutting parameters. Deviation of HAZ obtained by optimised HAZ model is 2.72%. Optimum cutting parameters for minimum HAZ are: output current, 100 A; stand-off gap, 1 mm and pressure, 620.52 kPa.
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S & T and Industrial Research |
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444 |
Low cost prototype
development of electronic knee |
This study presents design and development of an electronic knee, which uses attached sensors, microcontrollers and electro pneumatic valve arrangement to emulate near natural walk. Being all sensors and mechanical assembly developed indigenously, prototype would be a low cost electronic knee.
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449 |
Removal of heavy
metal ions from aqueous solutions using chemically (Na2S) treated
granular activated carbon as an adsorbent |
Removal of Cd(II), Pb(II),
Hg(II), Mn(II), Ni(II) and Zn(II) by chemically (Na2S) treated granular activated carbon (GAC) has
been found to be concentration, pH, contact time, adsorbent dose and
temperature dependent. Adsorption isotherm studies indicated that adsorptive behaviour
of metal ions on chemically treated GAC satisfies Langmuir assumptions. Proposed method had potential application
for effluent treatment in industries.
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454 |
Production and
optimization of cellulase from Fusarium oxysporum by submerged fermentation |
Fusarium oxysporum, isolated from infected tomato plant parts, produced maximum cellulase at optimum parameters (pH, 6.0; temp., 50°C; and incubation period, 12 d) in cellulase enzyme production broth having 1% CMC (carboxy methyl cellulose) as a cellulose substrate. Activities of purified cellulases (mol wt, 24, 29 and 45 kDa) were stimulated by concentrations (0-70 mM) of Na+ and Mg++, while EDTA inhibited enzyme activity at all concentrations. |
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S & T and Industrial Research |
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460 |
Studies on Ipomea carnea and Cannabis
sativa as an alternative pulp blend for softwood: Optimization of soda
pulping process |
This study presents a blend
of Cannabis sativa and Ipomea carnea as a substitute to
softwood for soda pulping. Optimized soda pulping conditions are: active
alkali, 16% (as Na2O); max. temp., 165°C; time (at 165°C) 180 min;
and liquor to wood ratio, C. sativa,
3.5:1 & I. carnea, 4.0:1. Screened pulp yields were:
I. carnea, 47.86% (kappa number 34); and C. sativa, 49.50% (kappa number 33). Anthraquinone (AQ, 0.1%)
also improves pulp yield and reduces kappa number, respectively, for: I. carnea, 0.24%, 8 units; and C.
sativa, 0.24%, 4 units. At same chlorine demand (5.80%), pulp brightness
improved of I. carnea (87.1%) and C. sativa (84%) by CEHH bleaching
sequence. Therefore, I. carnea
fibers may be used as brightness improver of pulp. |
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468 |
Enhanced yield and
nutritional quality in green gram (Phaseolus radiata L) treated
with seaweed (Kappaphycus alvarezii)
extract |
This study presents foliar application effect of Kappaphycus alvarezii (5-15%) extract on yield and seed quality of green gram at flowering stage. Application of K. alvarezii (conc. 10.0%) significantly increased seed yield (30.11%) compared to control, due to increase in yield of pods, weight of pods as well as seed yield per plant and 100 seed weight. This treatment also improved nutritional quality of seed with increase in contents of seed as follows: protein, 19.43; carbohydrate, 5.17; P, 3.61; and Mo, 52.63%. Cooking conditions: Active alkali = 16% (as Na2O), Maximum cooking time = 3 h at 1650C, Liquor to wood ratio = 3.5:1 for C. sativa and 4.0:1 for I. carnea, Digester pressure = 6.5 kg/cm2 |
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Energy and Environment |
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472 |
Comparative study of
bioethanol production from mahula (Madhuca
latifolia L.) flowers by immobilized cells of Saccharomyces cerevisiae and Zymomonas
mobilis in calcium alginate beads |
This study presents ethanol production from mahula flowers in submerged fermentation (SmF) using immobilized cells of Saccharomyces cerevisiae (CTCRI strain) and Zymomonas mobilis (MTCC 92) in calcium alginate as beads. Maximum ethanol concentrations were 154.5 and 134.55 g kg-1 flowers using immobilized cells of S. cerevisiae and Z. mobilis, respectively. Immobilized cells of S. cerevisiae in calcium alginate beads were more effective (14.83% more yield) for ethanol production than immobilized cells of Z. mobilis. |
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Author-Reader Platform |
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476 |
Announcement
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479 |
Instructions to contributors
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