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VOLUME 66
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NUMBER 11
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NOVEMBER
2007 |
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CONTENTS
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Management & Information Technology
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891
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Achieving yield construction and process analysis in TFT-LCD industry based on critical layers and areas
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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. |
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898 |
Development of a software sensor for compositions in continuous
reactive distillation
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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
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905 |
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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 |
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S & T and Industrial Research |
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912 |
Wear and fatigue
analysis of two wheeler transmission chain |
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 |
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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. |
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923 |
Voltammetric behaviour of
cefixime at a composite polymer membrane electrode
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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.
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Energy and Environment |
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928 |
Policies and measures for economic efficiency, energy security and environment protection in India
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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 India’s policies and measures for
economic efficiency, environment protection and energy security (3-E). |
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935 |
Asbestos fiber counts in work zone area of an asbestos-cement factory
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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).
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Waste Treatment and Utilization |
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938 |
Use of waste
plastics and copper slag for low cost bituminous roads
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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 160°C. 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 |
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945 |
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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). |
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Waste Treatment and Utilization |
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952 |
Kinetic characterization of
removal of As (III) by mixed adsorbents
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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 & 50°C. 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 |
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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. |
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Author-Reader Platform |
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963 |
Instructions to contributors |
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