Journal of Scientific & Industrial Research


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ISSN: 0022-4456

CODEN: JSIRAC (64) (7)  (2005)

VOLUME 64

NUMBER 7

JULY 2005

CONTENTS

Review

475

Fenugreek and other lesser known legume galactomannan-polysaccharides: Scope for developments

 

 

 

 

 

 

Vandana Mathur & N K Mathur

 

Among useful plants, legumes stand next only to grasses, yet the variety of products produced from legumes are more numerous than those from grasses, which mainly contain glucans (starches & cellulose), hemicelluloses and sugars as carbohydrates. Some legume seeds additionally have galactomannans and amyloid as endosperm reserve polysaccharides, while many legume trees exude variety of gums. Because of unique industrial applications, legume galactomannans have acquired commercial value. There are many unutilized tropical legume galactomannans that could be exploited. This review presents galactomannans of some less common legumes.

 

 

Papers: Management and Information Technology

482

Development of closed form design formulae for aperture coupled microstrip antenna

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Samik Chakraborty, Bhaskar Gupta &
D R Poddar

 

Closed form equations are presented for designing aperture coupled microstrip antennas to ensure impedance matching with the feed network with a low return loss over a wide frequency band. The features like compactness, integrability with printed circuits and shielding of the radiating patch from the radiation emanating from the feed structure etc. make these antennas attractive for present day scientific and industrial applications in fields like mobile computing and communication.

 

IPC Code: H 01 P 3/08; H 01 Q

 

 

S&T and Industrial Research

487

Performance evaluation and software validation of automatic bank of DC reference standard

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Sudhir K Sharma & V N Ojha

The paper discusses in detail the establishment, performance evaluation and software validation of automatic bank of DC reference standard, which is traceable to primary standard of voltage. The bank is used for calibration of reference standard/industrial instruments in dc voltage at par to the international level and for the dissemination of unit of volt in the country. The average values of Device Under Calibration (DUC) are assigned using bank of DC reference standard in automatic and manual mode are 10.000 0061 ± 0.000 0044 V and 10.000 0060 ± 0.000 0046 V respectively. The difference between their average values and expanded uncertainty are 0.1 x 10-6 V and ± 0.2 x 10-6 V respectively and are within the permissible limit of the stability of the reference voltage.

 

IPC Code: G 01 G 19/413

 

 

491

Ellagic acid from gallnut (Quercus infectoria): Extraction and determination of its dyeing conditions for natural fibres

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Adem Onal, Ahmet Sari and Mustafa Soylak

 

The dyestuff of ellagic acid in gallnut (Quercus infectoria) was extracted and used in dyeing of woolen strips, feathered-leather and cotton using three types of mordanting methods at various pH values. Selected transition element salts [CuSO4 5H2O, FeSO4 7H2O, ZnSO4 7H2O, Al(NO3)3. 9H2O] were used as mordant agent at various pH. The dyed samples with highest fastness were obtained by Cu(II) for all samples except for cotton and by Al(III) for only cotton at pH 8 in the pre-mordanting method. It was also observed that gallnut plant based ellagic acid dyestuff would probably be an important raw material in dyeing process of natural textile fibers.

 

IPC Code: D 06 P 1/36

 

S&T and Industrial Research

496

Decomposition of hydrogen peroxide in presence of mixed ligand cobalt (II) and
nickel (II) complexes as catalysts

 

 

 

 

V S Shivankar  & N V Thakkar

The decomposition of hydrogen peroxide catalyzed by mixed ligand cobalt (II) and nickel (II) complexes as heterogeneous catalysts and adsorbate on alumina has been investigated by measuring the evolution of oxygen at different time intervals between 35-60oC. Enhanced activity has been observed in presence of alumina-adsorbed complexes. The reaction rate is found to increase with increase in temperature and quantity of the catalyst. A probable reaction mechanism has been suggested and the results have been interpreted on the basis of formation of a surface-active intermediate and its subsequent interaction with hydrogen peroxide.

IPC Code: C 23 C 20/04

504

Charge transfer complexes of chloranil with drugs











 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

T Veeraiah, G Anjaiah & P Kista Reddy

The study of charge transfer (CT) complexes of chloranil with drugs (Naproxen, Nerolin, Methyl anthranilate, Isoxsuprine and Nylidrin) showed that there is a significant interaction between the acceptor and donors as evidenced by colour changes and absorption spectra. From the position of CT bands, the ionization potentials (IPs) of donors were evaluated using appropriate equations. The donor’s abilities are in the following order: Naproxen > Nerolin > Methyl anthranilate > Isoxsuprine > Nylidrin. The stability constants that varied in the same order as IPs are useful in estimation of the concentration of drugs either in pure form or in formulations and give a guide to the estimation of the drugs in industry and pharmacy.

 

IPC Code: A 61K 9/00

S&T and Industrial Research

509

Synthesis of high silica content silicoaluminophosphate-5 (SAPO-5) from non-aqueous medium using hexamethyleneimine template

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

N Venkatathri

 

Silicoaluminophosphate–5 (SAPO-5) molecular sieve with up to 2.4 Si atom per unit cell have been synthesized using hexamethyleneimine template in ethylene glycol medium (molar ratio of silica in the reaction gels up to 0.3). Crystallinity and silicon incorporation are confirmed by XRD, XRF, N2 sorption study, TG/DTA, SEM, pyridine TPD technique and hydroxyl region FT-IR. These materials with high Si concentration show higher activity for toluene alkylation reaction than samples prepared with up to 0.1 molar ratio of silica in the gel of aqueous media.

 

515

Production, optimization and characterization of extracellular invertase by an actinomycete strain

 

 

 

 

 

 

 

 

N Kaur & A D Sharma

Streptomyces sp. ALKC8 produced high levels of extra-cellular invertase (350 Ul-1) after incubation for 24 h at pH 5.0, temperature 37°C in the presence of sucrose (3%). The optimum temperature and pH for enzyme activity were 60°C and 5.0 respectively. All metal ions except Na+, Hg2+ and Ca2+ were well tolerated and did not adversely affect invertase activity. However, SDS inhibited the enzyme activity. Maximum invertase activity (581 Ul-1) was produced by cells grown in the medium containing sucrose (2% w/v) and yeast extract in combination with NaNO3, which was about twofold higher than the production in basal medium.

 

S&T and Industrial Research

520

Study on prediction of snowmelt using energy balance equations and comparing with regression method in the Eastern part of Turkey

 

 

 

 

 

 

 

 

 

Cahit Yerdelen & Reşat Acar

This paper presents two snowmelt models: i) Energy balance model (EBM); and ii) Linear regression model (LRM). To decide suitable model for the basin, daily mean flow data of Kırkgöze discharge gauging station of State Hydraulic Works (DSİ) was applied to Karasu-Kırkgöze mountainous basin that has 233.2 km2 watershed drainage basin and elevation range of 1830-2854 m in the eastern part of Turkey. The coefficients of correlation (R) between snow melting data calculated by EBM and gauging data were in the range of 0.88-0.98 for each year (R2=0.77-0.96). Moreover, LRM is established for the only period of 1987 using observed discharges of basin and meteorological variables. The computed coefficient of correlation (R) between regression model including five predictor variables (T, Rd, RH, V & Y) and gauging data was obtained as 0.87 (R2=0.757). EBM was found more representative than LRM to predict snowmelt in eastern part of Turkey due to high coefficient of correlation.

 

 

Waste Treatment and Utilization

529

Transport of textile anionic dyes using cationic carrier by bulk liquid membrane

 

 

 

 

 

G Muthuraman & K Palanivelu

 

Tetrabutylammonium bromide (TBAB) has been used as carrier for the transport of dyes through methylene chloride. Using 1:1 M salicylic acid in sodium carbonate in the receiving phase, the amount of dye transported across the U-type bulk liquid membrane (BLM) after 70 min was found to be 97 ± 2 %. The percent recovery of dyes is not found to decrease in the presence of anions (Cl- and SO4-) in the feed solution.

 

IPC Code: B 08 B 3/00

 

Book Review

534

Opportunities and strategies for Indian business

 

Reviewer:  Rajat K Baisya

 

Author-Reader Platform

536

Announcements

538

Instructions to contributors

 

ABBREVIATIONS

WORDS

UNITS

Approximately

approx

Hour

h

Concentration*

conc

Litre

l

Diameter

diam

Minute

min

Equation 1

Eq (1)

Percent*

%

Figure

Fig

Quintal

qtl

Specific gravity

sp gr

Second

sec

Temperature*

temp

Tonne

ton

Volume

vol

Year*

yr

*In running text will be full and in abstracts and in brackets will be abbreviated


Author Index

 


Acar R

520

Anjaiah G

504

 

 

Chakraborty S

482

 

 

Gupta B

482

 

 

Kaur  N

515

 

 

Mathur N K

475

Mathur V

475

 

 

Muthuraman G

529

 

 

Ojha V N

487

Onal A

491

 

 

Palanivelu K

529

Poddar D R

482

 

 

Reddy P K

504

 

 

Sari A

491

 

 

Sharma A D

515

Sharma S K

487

Shivankar V S

496

Soylak M

491

 

 

Thakkar N V

496

 

 

Veeraiah T

504

Venkatathri N

509

 

 

Yerdelen C

520


 

 

Keyword Index

 


Antenna

482

Aqueous

509

 

 

BLM

529

 

 

Calibration

487

Casia fistula

475

C. tora

475

Charge transfer

504

Chloranil

504

Cobalt

496

 

 

Decomposition

496

Drugs

504

Dye transport

529

Dyestuffs

491

 

 

Ellagic acid

491

Energy balance

520

 

 

Fenugreek

475

 



Fructose syrup

515

FT-IR

509

 

 

Galactomannan derivatives

475

Gallnut

491

 

 

Hydrogen peroxide

496

Hydrology

520

Hydroxyl region

509

 

 

Impedance matching

482

Invertase

515

 

 

Legume galactomannans

475

 

 

Mass balance

520

 

 

Microstrip

482

 

 

Natural fibres

491

Nickel

496

 


Non-aqueous

509

 

 

Performance evaluation

487

 

 

Reference standard

487

Regression

520

 

 

SAPO-5

509

SEM

509

Sesbania bispinosa

475

Snow

520

Snowmelt model

520

Software validation

487

Streptomyces sp

515

 

 

TBAB

529

TG/DTA

509

Traceability

487

 

 

Underutilized plant resources

475

 

 

XRD

509