Journal of Scientific & Industrial Research

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VOLUME 66

NUMBER 11

NOVEMBER 2007

CONTENTS

Management & Information Technology

891

Achieving yield construction and process analysis in TFT-LCD industry based on critical layers and areas



K-L Hsieh

In this study, a procedure is proposed to address achieving yield construction and process analysis in TFT-LCD industry based on critical layers and areas. Besides, an illustrative case owing to TFT-LCD manufacturer at Tainan Science Park in Taiwan has been applied to verify rationality and feasibility of proposed procedure.

898

Development of a software sensor for compositions in continuous reactive distillation


















C Sumana & C Venkateswarlu

 

 

 

 

 

 

 

A model based soft sensor is presented for composition estimation in continuous multicomponent reactive distillation. Composition soft sensor is supported by a simplified dynamic model of the process that includes component balance equations together with thermodynamic relations and reaction kinetics. Temperature measurements used as inputs to the soft sensor are suitably selected in order to obtain optimal estimates for compositions. Design and performance of the composition soft sensor is evaluated by applying to a metathesis reactive distillation column. Results demonstrate effectiveness of the soft sensor for inferential estimation of compositions in reactive distillation column.

IPC Code: B01J8/00

 

 

 

 

 

 

 


905

Simulation of economic injury levels for leaf folder (Cnaphalocrocis medinalis Guenee) on rice (Oryza sativa L.)

 








D Satish, Subhash Chander & G Reji

Leaf folder incidence on rice (Pusa Sugandha 3) was 1.2-20.5% folded leaves with highest infestation between 45-55 days after transplanting (DAT). Two spray applications with endosulfan 35 EC at 50 and 70 DAT were found optimum for preventing yield loss (26%) due to pest. Leaf folder damage was calibrated and validated through a generic crop growth model, InfoCrop. Validated model was used for simulating economic injury levels (EILs) of the pest. Simulated EIL was found to be 9, 11 and 12% folded leaves at 50 DAT and 12, 15 and 14% at 70 DAT during 2003, 2004 and 2005, respectively. Simulation models could account for changes in weather, inputs and crop-pest interactions, and therefore, could be potential tools for formulating site specific EILs for pests.

IPC Code: A01Q11/00

 

S & T and Industrial Research

912

Wear and fatigue analysis of two wheeler transmission chain

















P Sadagopan, R Rudramoorthy &
R Krishnamurthy

This paper presents wear reduction of existing chain used in 100 cc motorcycles. Elongation of chain is calculated and compared with the field result. In an alternate design developed, theoretical evaluation for elongation is made applying the same conditions used for evaluating the existing chain. Fatigue properties of existing standard chain components are evaluated based on mathematical model as well as by using ANSYS software.

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919

Inhibition of mild steel corrosion in hydrochloric acid by anisaldehyde thiosemicarbazone and pyridoxal thiosemicarbazone

 






B I Ita, O E Offiong, O U Abakedi & N O Alobi

Corrosion inhibition of mild steel in HCl by pyridoxal thiosemicarbazone (PHTSC) and anisaldehyde thiosemicarbazone (ATSC) at 303-333 K and concentrations of 0.0001-0.0005 M has been studied using weight loss technique. Inhibition efficiencies of 88% and 60% have been obtained at 333 K and 0.0005 M concentration for PHTSC and ATSC respectively. Both inhibitors exhibit first order type of mechanism on the basis of temperature effect. The difference in inhibitory properties of compounds has also been incorporated in the study.

923

Voltammetric behaviour of cefixime at a composite polymer membrane electrode





















 



D C Tiwari, Rajeev Jain & Gaurav Sahu

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 Electrochemical behaviour of cefixime has been studied in Britton-Robinson buffer system at composite polymer membrane working electrode and results compared with glassy carbon electrode. A well-defined cathodic diffusion-controlled irreversible peak was observed in entire pH range. The current increases steadily

 

 with diffusion scan rate and concentration.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Energy and Environment

928

Policies and measures for economic efficiency, energy security and environment protection in India


 




M Venkaiah, S C Kaushik & M L Dewangan

India needs to sustain 8-10% economic growth to meet energy needs of people below poverty line. India would, at least, need to grow its primary energy supply (3-4 times) of present consumption to deliver a sustained growth of 8% by 2031. This paper discusses Indias policies and measures for economic efficiency, environment protection and energy security (3-E).

935

Asbestos fiber counts in work zone area of an asbestos-cement factory









Furquan A Ansari, Mohammad Ashquin,
Huma Siddiqui & Iqbal Ahmad

 

Levels of asbestos fibers in air at work zone in asbestos-cement (AC) sheets manufacturing factory, M/s Sturdy Industries Ltd, Patiala, Punjab have been studied. Air samples were collected from fiber godown, ingredients mixing, AC sheet manufacturing and the main gate. Phase contrast and polarized microscopic observations on asbestos fibers collected on membrane filters suggests that they are chrysotile. A detailed analysis shows the prevalence of chrysotile fibers (0.04-0.07 f/cc) in the working environment. These fiber counts are less than the existing Indian Standard (0.5 f/cc) and proposed Indian Standard (0.1 f/cc).

 

 

 

 

 

Waste Treatment and Utilization

938

Use of waste plastics and copper slag for low cost bituminous roads






























 


Kajal, N K S Pundhir, Sangita & A Chandra

Study presents use of waste plastics and copper slag (CS) in hot bituminous mixes to enhance pavement performance, protect environment and provide low cost roads. Waste plastic modified bitumen (WPMB) has been prepared by adding mixed plastic waste (5%) in shredded form with suitable cross-linking agent in 80/100 bitumen and blended for 1 h at 160C. Physical properties of WPMB are found within specified limits (IS: 15462-2004). Delhi quartzite aggregate (size, 20 mm, 10 mm), stone dust and lime along with varying concentrations of CS as aggregate filler is taken for preparation of Marshall specimens (60/70 paving bitumen, 80/100 paving bitumen and WPMB). Optimum binder content is achieved at 5.2% (by wt of mix). Marshall specimens are also prepared with composition of CS (10, 15 and 20%) replacing stone dust; CS (15%) has been found best.

IPC Code: E01C7/18; C10C3/08

 

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Waste Treatment and Utilization

945

Sorption and ion exchange behavior of Pb(II), Bi(III) and Th(IV) in aqueous solutions towards zirconium phosphate





























 



Amit Jayswal & Uma Chudasama

 

 

 

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 Amorphous zirconium phosphate (ZP), an inorganic ion exchanger of the class of tetravalent metal acid (TMA) salt, has been synthesized by sol-gel method, and characterized by elemental analysis (ICP-AES), thermal analysis (TGA, DSC), FT-IR and X-ray diffraction studies. Sorption/ion exchange behavior of metal ions [Pb(II), Bi(III) and Th(IV)] towards ZP has been studied varying temperature, kinetic (over all rate constant k′ and equilibrium constant kc,) and thermodynamic parameters (standard free energy

 DG, enthalpy DH, and entropy DS) evaluated and adsorption isotherms (Langmuir and Fruendlich) studied. Sorption of metal ions follows the order Pb(II) > Bi(III) > Th(IV).

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Waste Treatment and Utilization

952

Kinetic characterization of removal of As (III) by mixed adsorbents

































A P Singh, K K Srivastava & H Shekhar

 

Adsorption kinetics for removal of arsenic was carried out by red mud and its mixtures with haematite, china clay and fly ash besides china clay-fly ash at: adsorbate conc., 5.0 mg1-1; particle size of adsorbent, <53 mm; agitation rate, 220 rpm; pH, 8.0; and temp., 30, 40 & 50C. Data fit into Lagergren equation and adsorption follows first order reaction kinetics. As(III) removal by adsorbents is diffusion controlled. A low value of activation energy indicates flat nature of energy barrier.

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957

Impact of brass and electroplating industry effluent on some physico-chemical and biological properties of soil












Shweta Saraswat, Saumyata Tewari &
J P N Rai

A field study was conducted at three sites (S1-S3) of 500m longitudinal transect along the drain, where soil was irrigated by toxic metal rich brass and electroplating industrial effluent in suburban area of Moradabad, India. Spatial and seasonal variations of total heavy metal content in soil and their effect on physico-chemical and biological properties were studied in soil samples taken from 0-25, 25-50 and 50-75 cm soil depth. Except pH, all parameters were maximum in summer in surface soil at each site. Total metal content decreased with increasing distance from the effluent course. Physico-chemical values (pH, EC, Corg, available N etc.) were found minimum at S1 and maximum at S3. Significant inhibition of microbial biomass C and N, respiration, dehydrogenase activity and microbial coefficient occurred in soils highly contaminated by heavy metals. There was a significant decrease in Cmic/Nmic ratio and an increase in metabolic quotient (qCO2) with increasing metal concentration.

Author-Reader Platform

963

Instructions to contributors

Author Index

 

 

Abakedi O U

919

Ahmad I

935

Alobi N O

919

Ansari F A

935

Ashquin M

935

Chander S.

905

Chandra A

938

Chudasama U

945

Dewangan M L

928

Hsieh K-L

891

Ita B I

919

Jain R

923

Jayswal A

945

Kajal

938

Kaushik S C

928

Krishnamurthy R

912

Offiong O E

919

Pundhir N K S

938

Rai J P N

957

Reji G

905

Rudramoorthy R

912

Sadagopan P

912

Sahu G

923

Sangita

938

Saraswat S

957

Satish D

905

Shekhar H

952

Siddiqui H

935

Singh A P

952

Srivastava K K

952

Sumana C

898

Tewari S

957

Tiwari D C

923

Venkaiah M

928

Venkateswarlu C

898



Keyword Index

 

Activation energy of adsorption

952

Adsorption isotherms

945

Adsorption kinetics

952

Anisaldehydethiosemicarbazone (ATSC)

919

Asbestos cement sheets factory

935

Asbestos fiber

935

Backpropagation neural network model

891

Bituminous mix

938

Bush

912

Cefixime

923

Chains

912

Chrysotile

935

Composite polymer electrode

923

Composition estimation

898

Copper slag

938

Corrosion

919

Critical areas

891

Critical layers

891

Cyclic voltammetry

923

Deflection

912

Dynamic model

898

Economic efficiency

928

Economic injury level

905

Elongation

912

Energy security

928

Environment protection

928

Enzymatic activities

957

Fatigue

912

Glassy carbon electrode

923

Heavy metals

957

Industrial wastewater

957

Inorganic ion exchanger

945

Ion exchange characteristics

945

Kinetics and thermodynamics of ion exchange

945

Leaf folder

905

Liquid crystal displays (LCDs)

891

Marshall stability

938

Microbial activities

957

Mild steel

919

Mix stability

938

Mixed adsorbents

952

Phase contrast

935

Pin

912

Plastic waste

938

Polarized light microscopy

935

Polymer modified bitumen

938

Pyridoxal thiosemicarbazone (PHTSC)

919

Reactive distillation

898

Rice

905

Simulation model

905

Soil pollution

957

Stepwise regression technique

891

Tetravalent metal acid salt

945

Wear

912

Zirconium phosphate

945