Journal of Scientific & Industrial Research

Total visitors: 1,438   since 13-02-06

ISSN: 0022-4456

CODEN: JSIRAC (65) (3)  (2006)

VOLUME 65               

    NUMBER 3

MARCH 2006

CONTENTS

Management and Information Technology

187

Achievement motivation and performance of scientists in research and development organizations

 

 

 

 

 

 

 

 

 

 

Uma J Iyer & T J Kamalanabhan

The paper focuses on the development and application of an adult achievement motivation (AM) scale. A questionnaire was constructed and a pilot study was conducted to find the underlying dimensions of the AM construct. Principal component analysis of 206 samples indicated that 10 factors appeared relevant, which explained for 69% of the original variance. Cronbach Alpha values for the factors ranged from 0.55 to 0.87. The ten salient dimensions identified were: Task orientation, Perseverance, Anticipatory behaviour, Competitiveness, Test taking behaviour, Reaction to success/failure, Future orientation, Independence, Rigidity and Involvement. The questionnaire was administered to 222 scientists working in R&D organizations. Discriminant analysis was carried out using the Statistical Package for Social Sciences (SPSS) package. Results indicated that there exists a significant correlation between consistently good performance and AM.

 

195

Global telecom revolution: Spatial -temporal aspects

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

D K Nauriyal & Sanjeev Bhalla

Current global telecommunication landscape is undergoing a paradigm change in terms of technologies and usage. Global System for Mobile (GSM) communications has emerged as the preferred technology followed by the fast growing Code Division Multiple Access (CDMA) technology. Developed countries (without the transition countries) lead the world in number of landline and cellular connections, followed by high-income developing countries, which show the maximum growth. Paper also presents an analysis based on Digital Access Index (DAI) of the countries. India has emerged as a noteworthy participant in telecommunication market. Paper discusses techno-commercial and regulatory mechanism prevalent in the country.

 

 

S & T and Industrial Research

213

Linear quadratic regulator controller design for active suspension system subjected to random road surfaces

 

 

 

 

 

 

 

 

M Senthil Kumar & S Vijayarangan

Present work aims at developing an active suspension for a passenger car by designing a controller using linear quadratic optimal control theory, based on two different control approaches [conventional method (CM), acceleration dependent method (ADM)]. Performance of the active suspension system of a quarter car model with 3 degrees-of-freedom with two control approaches has been compared with that of passive one. Active suspension system had a better potential to improve both the ride comfort and road holding, since the passenger acceleration has been reduced for active CM system (19.58%) and for active ADM system (34.08%) compared to passive one. Also suspension travel has reduced (37.5%).

 

IPC Code: B60G; G09B17/00

 

S & T and Industrial Research

227

Strength analysis of an aluminium-alloy component of circular geometry developed by cold forming and friction welding method

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

S K Mukhopadhyay, J Basu & P K Chaulia

To meet the requirements of modern manufacturing of automotive components of near net shape and high strength to weight ratio at lower cost, a 6061Aluminium-alloy Bicycle Hub (Rear) was produced by a newly proposed method combining cold forming and friction welding processes. As the process involved joining of two cold formed halves by friction welding to get the final component (rear bicycle hub), knowledge of the stress distribution over the component under the simulated loading conditions was felt very important to examine its strength. The finite element method, used for the analysis of the component using ANSYS Code, revealed that in the middle portion of the hub-stem (friction welded zone), the stress magnitude is of very low order. The maximum value of stress observed at the junction points of flange and spokes, is within the allowable stress of the material. Thus the structural integrity of the component during use is established.

 

IPC Code: B23K20/12

 

 

232

An estimation of correlation on thermo-acoustic properties of mineral wool

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R K Srivastava, R L Dhabal, B M Suman, Anuj Saini & Poonam Panchal

Paper presents thermal and acoustical properties of mineral wool, a class of building material available in the form of blankets and acoustical tiles. Thermal conductivity and sound absorption coefficient of materials has been determined at CBRI, Roorkee. For measurement of sound absorption coefficient, Standing Wave Method is used and for thermal conductivity, Guarded Hot Plate Apparatus is used. Paper describes regression equations correlation between noise reduction coefficient (NRC) and thermal conductivity (K) for mineral wool material .The equation is useful to determine NRC value by knowing the K-value and vice versa for indoor design purposes.

 

IPC Code: G10K11/178

 

 

 

 

 

 

 

 

 

 

 

S & T and Industrial Research

237

Taste sensing with polyacrylamide grafted cellulose

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Sarmishtha Majumdar &Basudam Adhikari

The research work covers polymer membrane preparation, morphology study, and structural characterization of the membrane and study of the taste sensing characteristics of membrane for five different taste substances. FTIR spectroscopic analysis, UV spectroscopic analysis and SEM were carried for the structure and morphology of polyacrylamide (PAM) grafted cellulose membrane. Threshold concentrations of PAM grafted cellulose membrane are below human threshold concentrations and are as follows: HCl, 0.008; NaCl, 0.05; Q-HCl, 0.001; sucrose, 0.008; and monosodium glutamate (MSG), 0.05 mM. Membranes also showed characteristic response patterns for organic acids (acetic acid, citric acid, formic acid etc.), mineral acids (HCl, H2SO4, HNO3), salts, bitter substances, sweet substances and umami substances. Sensor device prepared with this membrane has excellent shelf life.

 

IPC Code: C08F120/56

 

 

244

Storage behaviour of olive (Olea europaea L.) oil in different packages

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Rakesh Sharma & P C Sharma

Storage behaviour of olive oil extracted from three promising cultivars (Olea europaea L. cv. Coratino, Leccino and Frantoio) was evaluated during storage up to 6 months after packing in transparent and amber coloured glass bottles. Coratino gave highest oil yield (42.15%) followed by Leccino (41.80%) and Frantoio (38.60%) on dry basis. Free fatty acids (FFAs) and peroxide value of oil of different cultivars ranged from 0.96-1.10% and 5.36-13.08%, respectively. Higher degree of unsaturation (Iodine Value) was recorded in cultivar Leccino followed by Frantoio, which decreased from initial values of 81.53 and 79.00 to 76.60 and 76.10, respectively during storage of 6 months. The olive oil from Coratino recorded highest value of total phenols (0.231 mg/g) as against only 0.088 mg/g in Leccino. During storage, oil from all the cultivars packed in either of the package (transparent or coloured) registered some increase in their FFAs, peroxide value, saponification value and unsaponifiable matter with corresponding decline in their iodine value and total phenols. Thus, packing of oil in coloured bottles seems to be more appropriate for better retention of quality during storage.

 

IPC Code: A23D9/00

 

 

 

 

Energy and Environment

248

Treatment of brewery wastewater by pilot scale upflow anaerobic sludge blanket reactor in mesophilic temperature

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Yalçın Öktem & Neşe Tüfekçi

In this study, treatment of brewery wastewater by pilot scale upflow anaerobic sludge blanket (UASB) reactor in mesophilic phase was investigated. UASB reactor was achieved with brewery wastewater to an organic loading rate (OLR) of 7 kg COD/m3-d at 12 m/d upflow velocity with a hydraulic retention time (HRT) of 3.5 day, and chemical oxygen demand COD removal efficiency of 95% with a methane yield of
0.30 m3 CH4/kg CODremoved. At an OLR 0.20 kg COD/m3-d, sludge concentration was increased and reached even 70000 mg/l at the end of 6th month. At the end of experiment, a granular sludge with good settling properties was produced.

 

IPC Code: C02F

 

 

 

252

Benzene and toluene profiles in ambient air of Delhi as determined by active sampling and GC analysis

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Anuj Kumar & S K Tyagi

Present study aims to standardise methodology for the measurement of benzene and toluene using active sampling onto sorbent tubes and to investigate their existing profile in the urban environment of Delhi, India. Samples were collected by active sampling onto preconditioned stainless steel standard adsorbent tubes packed with Tenax TA adsorbent using a portable constant low flow volume sampler. Sampling flow rate ranged 20-25 ml min-1 and sampling duration 1.30-2.30 h. Linear fit in all cases were found good with R2 > 0.99. Benzene concentration ranged 33.69 - 174.62 µg m-3 whereas toluene ranged 45.18 - 228.83µg m-3 in the vicinity of petrol pump along with heavy traffic roadside at Preet Vihar location. Average benzene and toluene concentration of ambient air at ITO (near a busy traffic intersection) ranged 13.03 - 33.06 µg m-3 and 19.71 - 57.64 µg m-3 respectively. While at East Arjun Nagar (a residential cum institutional area), levels were 17.69 µg m-3 and 22.81 µg m-3 for benzene and toluene, respectively. Present study indicated that the concentration of benzene at all the sites was higher than the limit values prescribed in the UK (16 µg m-3, running annual average) and European Commission (5 µg m-3, annual average). Average toluene and benzene ratio ranged between 1.29 µg m-3 in residential cum institutional area to 1.74 µg m-3 at busy traffic intersection.

 

Waste Treatment and Utilization

258

Removal of indigocarmine from industrial effluents using low cost adsorbent

 

 

 

 

Rajeev Jain, Megha Mathur &Shalini Sikarwar

In the present paper, adsorption technique was employed for removal of Indigocarmine and the technique was found to be very useful and cost effective for a better removal of dye. The operating variables such as adsorbent dose, adsorbate concentration, particle size, pH, contact time and temperature were optimized.

 

IPC Code: B01D17/05

 

264

Leachate removal rate and the effect of leachate on the hydraulic conductivity of natural (undisturbed) clay

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

M S Ozcoban, N Tufekci, S Tutus, U Sahin, & S O Celik

Hydraulic conductivity (HC) is perhaps the most important unique parameter determined in the laboratory for predicting mobility of leachates through clay liners. Typically, HC must be < or = 1x10-9 m/s for soil liners and covers used to contain hazardous waste, industrial waste, and municipal solid waste (MSW). Soil samples used in this study were obtained from the Kemerburgaz landfill in Istanbul. The study presents change in clay HC brought about by the chemical reactions between clay and a permeant. Any change induced by such a reaction in the microstructure (microfabric) of the clay was studied by scanning electron microscope. In order to determine the removal capability of the natural clay, COD, SS, VSS, Total P, TKN, Cu, Mn, Fe are also measured in the influent and effluent of the lab-scale reactor.

 

IPC Code: C02F

 

 

Author-Reader Platform

270

Instructions to contributors

 

 

 

 

 

 

 

 

 

Author Index

 


Adhikari B                                                   237

Anuj Kumar                                                 252

 

Basu J                                                          227

Bhalla S                                                        195

 

Celik S O                                                     264

Chaulia P K                                                 227

 

Dhabal R L                                                  232

 

Iyer U J                                                       187

 

Jain R                                                           258

 

Kamalanabhan T J                                       187

 

Majumdar S                                                 237

Mathur M                                                   258

Mukhopadhyay S K                                   227


Nauriyal D K                                               195

 

Öktem Y                                                      248

Ozcoban M S                                              264

 

Panchal P                                                     232

 

Sahin U                                                        264

Saini A                                                         232

Senthil Kumar M                                         213

Sharma P C                                                  244

Sharma R                                                     244

Sikarwar S                                                    258

Srivastava R K                                             232

Suman B M                                                 232

 

Tüfekçi N                                            248, 264

Tutus S                                                        264

Tyagi S K                                                    252

 

Vijayarangan S                                             213


 

Keyword Index

 


Achievement motivation                             187

Active sampling                                           252

Active suspension                                       213

Adsorption                                                  258

Aluminium-alloy                                         227

 

Benzene                                                       252

Brewery wastewater                                   248

 

Charcoal                                                       258

Code Division Multiple Access                  195

Cold forming process                                  227

 

Digital Access Index                                    195

 

Friction-welding process                             227

Functionalized polymer                              237

 

Grafted                                                        237

 

Hydraulic conductivity                               264

 

Indigocarmine                                              258

 

Leachate                                                       264

 

Manufacturing                                             227

Methane yield                                             248

Mineral wool                                               232

Mobile telecommunication                          195

 

Natural clay                                                 264


Noise reduction coefficient                          232

 

Olea europaea                                             244

Olive                                                            244

Olive oil                                                       244

Optimal control                                           213

 

Performance                                                 248

Permeability                                                264

 

Removal efficiency                                      264

Rice husk                                                     258

Ride comfort                                                213

Road handling                                              213

 

Scientist performance                                  187

Storage of oil                                                244

Strength analysis                                         227

SVI                                                               248

 

Taste sensor                                                237

Taste substances                                         232

Thermal conductivity                                  232

Thermo-acoustic properties                        232

Toluene                                                        252

Toxic air pollutants                                     252

 

UASB reactor                                              248

 

Vegetable oil                                                244

Volatile organic compounds (VOCs)           252