Journal of Scientific & Industrial Research

http://www.niscair.res.in; http://nopr.niscair.res.in

 

VOLUME 69

NUMBER 3

MARCH 2010

CONTENTS

Review

169

Recent developments in solid oxide fuel cell technology – a review








A Samson Nesaraj

This review presents development of low temperature solid oxide fuel cells (SOFC), which with high efficiency and high environmental performance have shown excellent potential as a future source of energy for vehicles and homes. Gd2O3 and Sm2O3 doped ceria based nanomaterials were developed world wide, as alternate electrolyte materials for SOFCs working at reduced temperature (700°C) since, state-of- art YSZ based electrolytes undergo interfacial reactions with adjoining cell components at operating temperature of SOFC after prolonged operation. Novel ceramic composite materials are reported as alternate electrode components of reduced temperature SOFC. Iron based alloys are developed as current collectors for low temperature SOFC applications.

177

Plasma pyrolysis and gasification of plastics waste – a review



Pragnesh N Dave & Asim A Joshi

Plasma pyrolysis integrates thermo-chemical properties of plasma using pyrolysis process for safe disposal of solid wastes. It is an environment friendly technology to generate valuable byproducts by converting municipal solid waste, biomedical waste and hazardous wastes at 800-1000°C. Plasma Pyrolysis of plastic wastes generates pyrolysis gas, which can be utilized for energy recovery via different applications.

Management & Information Technology

180

An inventory model with temporary price discount when lead time links to order quantity

















Chih-Te Yang, Liang-Yuh Ouyang,
Kun-Shan Wu & Hsiu-Feng Yen

This paper presents effects of a temporary price discount offered by supplier on a retailer’s replenishment policy, when lead time is linked to order quantity. A decision process for retailers is developed in deciding whether to adopt a regular or special order policy during a temporary sales period. Optimal special order quantity is determined by maximizing total cost saving between special and regular orders, and illustrated by several numerical examples along with sensitivity analysis of optimal solution.

 

 

Management & Information Technology

188

Exception detection in business process management systems






















Dragan Mišic, Miloš Stojković,
Dragan Domazet, Miroslav Trajanović,
Miodrag Manić & Milan Trifunović

This study presents exception detection in process management system, which uses active semantic model (ASM), a hybrid system comprising semantic networks, expert systems, object oriented programming and fuzzy logic. ASM is employed to capture semantic features of all kinds of workflow situations, as well as to detect and interpret exceptions.

194

An ANFIS algorithm for improved forecasting of oil consumption: a case study of USA, Russia, India and Brazil






Ali Azadeh, Morteza Saberi & Sara Ghorbani

This paper proposed an adaptive network-based fuzzy inference system (ANFIS) algorithm for oil consumption forecasting based on monthly oil consumption (January 2001 - September 2006) in USA, Russia, India and Brazil. Using mean absolute percentage error (MAPE), efficiency of different ANFIS models was examined. Proposed algorithm used Autocorrelation Function (ACF) to define input variables irrespective of trial and error method (TEM). Algorithm for calculating ANFIS performance is based on its closed and open simulation abilities.

S & T and Industrial Research

204

Study of hygrothermal ageing on properties of polyester / glass composites









Dhiraj Anand, Raman Bedi,
Rakesh Chandra & S K Tiwari

This study presents hygrothermal degradation of unidirectional glass fiber reinforced polyester composites (GFRPC). Water absorption of GFRPC immersed in distilled water increased with time and temperature except for samples immersed in river water at 60°C. Moisture absorption (%) in GFRPC increased with increase in fiber content. Degradation of properties [loss tangent (tan δ), glass transition temperature (Tg) and storage modulus (E')] was determined after moisture saturation and drying of specimens using dynamic mechanical analyser (DMA). E' and Tg decreased after moisture absorption for all specimens. Tg showed an almost complete recovery after drying in most cases, whereas E' reduced permanently after hygrothermal conditioning.

S & T and Industrial Research

208

Synthesis and characterization of methyl nitramino -2, 4, 6-trinitobenzenes using bismuth nitrate pentahydrate as an eco friendly nitrating agent





D M Badgujar, M B Talawar, S N Asthana & P P Mahulikar

This study presents synthesis of 2,4,6-trinitrophenylmethyl- nitramine (3a) 2,4,6-trinitro-1,3-di(methylnitramino) benzene (3b) and 2,4,6-trinitro-1,3,5-tris(methylnitramino) benzene (3c) by nitration of 2,4,6-trinitro-N-methylaniline (2a), 2,4,6-trinitro-1,3-di(methylamino) benzene (2b) and 2,4,6-trinitro-1,3,5-tris(methylamino) benzene (2c) using bismuth nitrate pentahydrate in tetrahydrofuran adsorbed on silica gel and fly ash as solid supports under microwave irradiation. An eco-friendly nitration approach used in synthesis of target compounds (3a-3c) is of interest for the production of high energy materials.

211

Gibberellic acid production by Fusarium fujikuroi SG2



















Sivakumar Uthandi, S Karthikeyan &
K G Sabarinathan

Present study isolates efficient strains of gibberellins producing fungal strains from ‘bakanae’ diseased root system of rice plants for their GA3 production potentials in Czapek-Dox liquid medium/improved medium. One of the isolates SG2 (GA3, 1175 mg/l) produced higher GA3 than standards strains of G. fujikuroi, which was identified as Fusarium fujikuroi SG2 (MTCC4649). While studying GA3 production pattern by this strain, gibberellin synthesis initiated on 3rd day and reached maximum by 9th day of fermentation.

215

Papermaking of mineral fiber composites


















Yun Lei, Quanxiang Yan, Shupeng Liu &
Jizu Yuan

Mineral and hardwood fiber composites were assessed by various factors (folding degree, tensile strength, elongation, tearing strength and tear factor). Performance of wollastonite or sepiolite composites is found higher than that of the same percentage fillers (calcium carbonate, talc) due to interwoven structure between mineral fibers and hardwood fibers. Composites of wollastonite and sepiolite (1: 1) can significantly improve performance of composite fibers due to combined effect of mineral fibers.

S & T and Industrial Research

221

Design optimization of dosa making workstation for smooth ergonomic interface

























A Somasundaram & P S S Srinivasan

This study presents design optimization of Dosa making workstation (DMW) used in preparation of South Indian food, dosa. Anthropometry of South Indian user population is considered in ergonomic interface analysis. Design of Experiments (DOE) was used for optimization of DMW. Four control parameters (shoulder height, arm length of worker, table width and table height of DMW) were considered in design optimization. Proposed parameters (height, 1150 mm; width, 750 mm) reduced risk of musculoskeletal disorder for users and enhanced quality of work at DMW.

Energy and Environment

225

Thermodynamic analysis of a regenerative gas turbine cogeneration plant





















Ashok Kumar, S S Kachhwaha &
R S Mishra

Design methodology has been developed for parametric study and thermodynamic performance evaluation of a gas turbine cogeneration system (GTCS). Parametric study showed that compression ratio (rp), inlet air temperature, turbine inlet temperature, steam pressure and pinch point temperature played a very vital role on overall performance of GTCS. Exergy analysis revealed that most sensitive components in GTCS were combustion chamber and regenerator.

Waste Treatment and Utilization

232

Enzymatic hydrolysis of chemically pretreated rice straw by two indigenous fungal strains: a comparative study




















Anita Singh, Namita Singh & Narsi R Bishnoi

This study presents pretreatment of rice straw and on-site enzyme production from two Aspergillus species. Maximum activity was found by A. niger (FPase, 7.4 IU/g; CMCase, 97 IU/g) and A. heteromorphus (FPase, 9.5 IU/g; CMCase 125 IU/g) in 72 h with EDA pretreated rice straw followed by NaOH and HCl pretreatment.

Author-Reader Platform

238

Instructions to contributors

 
                         Author Index


Anand D

204

Asthana S N

208

Azadeh A

194

 

 

Badgujar D M

208

Bedi R

204

Bishnoi N R

232

 

 

Chandra R

204

 

 

Dave P N

177

Domazet D

188

 

 

Ghorbani S

194

 

 

Joshi A A

177

 

 

Kachhwaha S S

225

Karthikeyan S

211

Kumar A

225

 

 

Lei Yun

215

Liu S

215

 

 

Mahulikar P P

208

Manić M

188

 

 

Mishra R S

225

Mišić D

188

 

 

Nesaraj A S

169

 

 

Ouyang L Y

180

 

 

Sabarinathan K G

211

Saberi M

194

Singh A

232

Singh N

232

Somasundaram A

221

Srinivasan P S S

221

Stojković M

188

 

 

Talawar M B

208

Tiwari S K

204

Trajanović M

188

Trifunović M

188

 

 

Uthandi S

211

 

 

Wu K S

180

 

 

Yan Q

215

Yang CT

180

Yen H F

180

Yuan J

215


                      Keyword Index


A. niger

232

Active semantic model (ASM)

188

Adaptive network based fuzzy inference system (ANFIS)

194

Alternative materials

169

Aspergillus heteromorphus

232

 

 

Bismuth nitrate

208

 

 

Cellulase

232

Composites

215

 

 

Design of Experiments

221

Dosa Making Workstation

221

 

 

Eco-friendly nitration

208

Ergonomics

221

Exception

188

 

 

Fusarium fujikuroi

211

 

 

Gas turbine cogeneration plant

225

Gibberellic acid

211

 

 

Hygrothermal degradation

204

 

 

Inventory

180

Isolation

211

 

 

Lead time

180

Lignocellulose

232

Low temperature operation

169

 

 

Mean absolute percentage error (MAPE)

194

Microwave irradiation

208

Mineral fibers

215

Musculoskeletal disorder

221

 

 

Nitramines

208

 

 

Oil consumption estimation

194

 

 

Papermaking

215

Parametric study

225

Plasma gasification

177

Plasma pyrolysis of plastics

177

Plasma technology

177

Polyester / glass composites

204

Pretreatment

232

 

 

Sepiolite

215

Solid oxide fuel cells

169

Submerged fermentation

211

 

 

Temporary price discount

180

Thermal plasma generators

177

Thermodynamic analysis

225

 

 

Water absorption

204

Wollastonite

215

Workflow

188