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Journal of Scientific & Industrial Research

 

 

 

ISSN: 0022-4456

 

CODEN: JSIRAC (62) (10) 955-1046 (2003)

VOLUME 62

NUMBER 10

OCTOBER 2003

 
 
 
CONTENTS
 
Review Paper

963

Catalytic naphtha reforming: revisiting its importance in the modern refinery


















Uday T Turaga & Ramnarayanan Ramanathan

Reviews catalytic naphtha reforming, a process that has completed 50 y of existence and has improved the quality of human life globally. Also examines, in detail, the historical background of reforming, reaction chemistry, reaction thermodynamics, process details, process variables, commercial processes, and future outlook. Recent environmental regulations have completely re-drawn the objectives of reforming and have even questioned its relevance. Attempts are also made to explain, in brief, the new challenges faced by reforming.

Papers

979

Genetically modified crops in China — the case of Bt cotton






V P Kharbanda

Genetically modified crops (GMCs) have generated considerable interest as a potential solution to the ever-growing problems of food and sustainable development. While recognizing its importance the area under GMCs worldwide has increased more than thirty-five times in just 5 y, from 1.7 m ha in 1996 to 58.7 m ha in 2002. Worldwide, nearly 90 varieties of crops are approved for commercial cultivation including cotton, rice, tobacco, soybean, corn, tomato, and rape. The present paper examines the status of Chinese efforts in this direction with particular attention to Bt cotton.

985

Release of ketoprofen from alginate microparticles containing film forming polymers






K S Rajesh, A Khanrah & Biswanath Sa

Effect of various formulation variables on the physical characteristics of the microparticles is studied. While increase in the concentration of sodium alginate and aqueous polymer dispersions increases the sphericity of the microparticles, no appreciable change in the morphology is observed with variation in the concentration of calcium chloride and curing time. The mean diameters of the microparticles are influenced by all the variables. Drug entrapment efficiency has reached nearly 100 per cent, except in those microparticles prepared by curing for longer time. In vitro release shows that drug release from the microparticles depends only on the concentration of alginate and the nature of aqueous colloidal polymer dispersions.

990

Eco-friendly pest management using monoterpenoids II — antifungal efficacy of menthol derivatives

























Purshottam M Dewang, Vidya P Nikumbh, Vrushali S Tare & Pramod P Mahulikar

Ether and ester derivatives of menthol, [5-methyl-2-(1-methylethyl) cyclohexanol], a natural monoterpenoid are synthesized and evaluated for antifungal potency against Aspergillus niger, Aspergillus oryzae, Fusarium oxysporum, and Alternaria alternata to study structure activity relationships. Ethylene dimer ether derivative is observed to be the most potent against all fungal species. Benzyl ether derivative is found to be more active than allyl ether derivative. In simple esters, cinnamate derivative is more activity enhancing against A. oryzae, A. alternata and Fusarium oxysporum, while benzoate is better against A. niger. Among diesters, malonate is more active against all the test fungi except F. oxysporum. Against A. alternata, coupling of monoterpenoid molecules through diester bridge containing one methylene group (malonate) is more active. Among simple ethers and esters, respectively, menthyl benzyl ether and menthyl cinnamate reflects the highest activity against F. oxysporum.

996

Development of specialty papers is an art: padding paper from indigenous raw materials — Part VIII




Dharm Dutt, C H Tyagi, R S Malik, J S Upadhyaya & Dinesh Kumar

In present investigation attempts are made to develop padding paper from locally available hardwoods like, Eucalyptus tereticornis with some proportion of long fibred cellulosic raw materials like, Dendrocalamus strictus. These cellulosic raw materials are mostly utilized in India, in different proportions. The results of laboratory made padding paper are suit promising. The padding paper can be used up to three-or four-times during pressing of decorative laminates. Laboratory made padding paper fulfils the purpose of decorative laminates manufacturers.

1001

Impact of quality management system on product quality at ONGC, Uran



 





D K Ralli, S C Pandey, A K Saxena & W K Alamkhan

Present work includes evaluation and assessment of Quality Management System (QMS) at Uran Plant w r t quality parameters of final products, viz. liquefied petroleum gas and low aromatic naphtha. Large data of 5y covering 2y before and after implementation of QMS, i.e., from 1998 to 2002 are averaged out for final LPG product. Year-wise percentage of off-spec samples vs total samples analyzed for quality assessment is computed. Similar trend analysis is carried out for LAN product for 3y, i.e., from 2000 to 2002. The results exhibit that there is a definite improvement in the quality of final products, like LPG, LAN at Uran plant after adopting ISO: 9002 QMS, which is reflected in terms of reduced number of batches of non-conforming products.

 

1008

Implementation of Labview based vibration monitoring system for turbine generator set in thermal power plants

















S S Thakur, Anil Sonkusare,
Pradeep Kumar & A D Kaul

Describes a data acquisition system using Labview software for acquiring data from various transducers namely, accelerometers, velocity pickups, proximity probes, and other sensors mounted at various locations of a TG (Turbine Generator) 210 MW set, in thermal power plants. Data from transducers can be acquired on different channels and various parameters can be set for each channel like channel number, channel name, sensitivity units and scan rate. Delay between acquisitions can also be set. Data can be stored in the programmable files, containing complete header information. Data can also be acquired continuously. Powerful and convenient data acquisition, storage, and retrieval mechanisms ensure that desired data will be available whenever required.

 

1015

Synthesis of value added products from pickle liquor and their physico-chemical characterization





















 





Rangadhar Nayak & J Rajagopala Rao

Aqueous suspensions of gelatinous precipitates are prepared by mixing solutions of sodium carbonate with iron (II) sulphate, a waste obtained from steel plants, in the ratio of CO32-/SO42->1. These are subjected to hydrothermal agitation and aerial oxidation at 30, 50, 65 and 80°C. The hydrolysed products are characterized by chemical analysis, particle size distribution, x-ray powder diffraction, thermal analysis, and IR spectroscopy studies. The samples are heated at suitable temperatures, chosen after the results of thermal decomposition, and identified by XRD.

1020

PU dispersions — effect of glycol in polyol moiety on the properties of PU coatings



 

R N Patil, U R Kapadi, Y R Wani & D G Hundiwale

PUR ionomers prepared by anionic dispersions process, using toluene diisocynate [TDI], polyester polyol, and trimelletic anhydride [TMA] as the potential ionic center with NMP as the co-solvent are discussed. A series of polyols based on various glycols are prepared while keeping the composition of the reactants the same. It is found that the dispersion prepared by a polyol containing neopentyl glycol [NPG] gives better results of a coated film with respect to gloss, scratch resistance, flexibility, and abrasion resistance.

Note

1024

Microwave assisted one pot synthesis of
N-substituted phenyl-4-thiophenyl-2-azetidinones as potent antimicrobial agents


D H More, N S Pawar & P P Mahulikar

Simple, rapid, clean, and environmentally friendly methods for the synthesis of Schiff’s bases and their cycloaddition with acetyl chloride to N-substituted phenyl-4-thiophenyl-2-azetidinones under microwave irradiation are reported.

Conference Report

1027

National symposium on “towards self-reliance in power”

R S Beniwal

 

Book Review

1035

·         India’s interaction with China, central and west Asia — history of science, philosophy and culture in Indian civilization, Volume III, Part 2

Reviewer: S Mohan

Sci-Tech Update

1039

·         Fish oil benefits eyes

 

·         Brain boosters: eating for the mind

 

·         Use of cobalt increases information storage density

 

·         A route to 1,3-propanediol

 

·         Low-cost pigment production process

 

·         Developments in nanotechnology

 

·         China discovered new catalyst

 

·         Anti-smoking vaccine developed

 

·         New rhodium-based catalyst developed

 

·         COMPASS suite of software

 

·         Innovative chlorine dioxide generator developed

 

·         Announcement


 

Author Index

 

Alamkhan W K

1001

Mahulikar P P

1024

Ralli D K

1001

Beniwal R S

1027

Mahulikar Pramod P

  990

Ramanathan Ramnarayanan

  963

Biswanath Sa

  985

Malik R S

  996

Rao J Rajagopala

1015

Dewang Purshottam M

  990

More D H

1024

Saxena A K

1001

Dinesh Kumar

  996

Nayak Rangadhar

1015

Sonkusare Anil

1008

Dutt Dharm

  996

Nikumbh Vidya P

  990

Tare Vrushali S

  990

Hundiwale D G

1020

Pandey S C

1001

Thakur S S

1008

Kapadi U R

1020

Patil R N

1020

Turaga Uday T

  963

Kaul A D

1008

Pawar N S

1024

Tyagi C H

  996

Khanrah A

  985

Pradeep Kumar

1008

Upadhyaya J S

  996

Kharbanda V P

  979

Rajesh K S

  985

Wani Y R

1020

 

Keyword Index

 

Alginate microparticles

985

Glycol

1020

Pickle liquor

1015

Antifungal efficacy

990

Indigenous raw material

996

Polyol moiety

1020

Antimicrobial agents

1024

Ketoprofen

985

Polyurethane dispersion

1020

Bt cotton

979

Labview software

1008

Quality management system

1001

Catalytic naphtha reforming

963

Liquefied petroleum gas

1001

Refinery

963

Chemical analysis

1015

Low aromatic naphtha

963

Reforming

963

Coatings

1024

Menthol derivatives

990

Specialty paper

996

Colloidal polymer

985

Microparticles

985

Steel plants

1015

Data acquisition system

1008

Microwave

1024

T G set

1008

Diisocynate

1020

Monoterpenoids

990

Thermal decomposition

1008

Dispersion

1020

Naphtha reforming

963

Thermal power plants

1008

Eco-friendly pest management

990

Padding paper

996

Transducers

1008

Eucalyptus tereticornis

996

Pest management

990

Transgenics

1008

Genetic engineering

979

Pesticides

990

 

 

Genetically modified crops

979

Phenyl-4-thiophenyl-2-azetidone

1024