Journal
of Scientific & Industrial Research
Total visitors:3,206 since 30-09-08 |
VOLUME
67
|
NUMBER 10
|
OCTOBER 2008
|
CONTENTS
|
Review
|
739 |
Information retrieval on Internet using
meta-search engines: A review
Manoj M & Elizabeth Jacob
|
|
Science & Society
|
747 |
Causality
principle, non-equilibrium thermodynamics and non-linear science of open
systems
R P Rastogi & R C Srivastava
|
Extensive theoretical
studies based on non-equilibrium thermodynamics and non-linear dynamics and
experimental studies related to simple and complex non-equilibrium
physico-chemical systems, which have possible application in real systems in
nature, has been reported. Present paper intends to: i) Elucidate concepts
related to causality principle developed on the basis of experimental and
theoretical studies; and ii) To illustrate manner, in which multiple forces
interact in phenomena involving multiple processes and multiple cause-effect
sequence such as: a) non-equilibrium steady states; b) bifurcation from
steady state to bi-stability and oscillatory state; c) temporal and
spatio-temporal oscillations; d) chaos; and e) pattern formation and fractal
growth in space.
|
Management
& Information Technology
|
759 |
Optimal
control of a fed-batch fermenter using parameterized data-driven models
K Yamuna Rani
|
An optimal control approach
is proposed for semi-batch processes based on parameterized data-driven (PDD)
model structures. Orthonormally parameterized input trajectories, initial
states and process parameters are inputs to the model, which predicts output
trajectories in terms of Fourier coefficients. Two model structures (linear
and quadratic) are incorporated into PDD modeling approach, and a previously
proposed model structure of ANNs is considered for comparison. Proposed PDD
modeling approach using newly proposed model structures is capable of
capturing nonlinear and time-varying behavior inherent in fed-batch systems
fairly accurately, and results of operating trajectory optimization using all models are found to be comparable to the
results obtained using exact first principles model.
|
774 |
An expert system for selection of piloting for
sheet metal work on progressive die
Shailendra Kumar & Rajender Singh
|
An expert system (PLTSEL) has been developed for selection of
piloting to assist die designers and process planners working in stamping
industries. Production rule-based expert system approach, used to construct
PLTSEL, is coded in AutoLISP language and designed to
be loaded into prompt area of AutoCAD. Low implementation cost makes system affordable for small and medium
size stamping industries.
|
780 |
Pattern
of extramural R & D funding in India
Namita Gupta & Rakesh Chetal
|
This paper overviews
funding pattern of extramural research supported by Central Government
departments/agencies during 5 years period (1995-2000) and then compares it
with previous 5 years (1990-95). Analyses are made in terms of pattern of
funding by types of institutions, broad subject areas, major scientific
agencies and year-wise support. Regional distribution of R&D projects and
their support in India
is also analyzed. A broad analysis of core databases on world publications in
science and technology is also carried out.
|
S & T and Industrial Research
|
|
788 |
Wedge
type vaned diffuser flow measurements in a low speed centrifugal compressor
Ümit Nazlı Temel, Adnan Öztürk &
Ali Pinarbaşi
|
This study establishes effectiveness
of vaned diffuser in comparison with vaneless diffusers in centrifugal
compressor. Hot wire measurements at three inter-vane positions for mean
velocity, turbulent kinetic energy and flow angle distributions in vaneless
space and vane region of a low speed centrifugal compressor are presented. A low speed compressor with a 19 bladed backswept
impeller and 16-wedge vanes
diffuser was used. Impeller blade wakes mixed out rapidly within
vaneless space than in an equivalent vaneless diffuser. Although, flow is
highly non-uniform in velocity at impeller exit, there was no any separation
from diffuser vanes. Presence of vanes accelerated mixing out process.
Therefore, use of twisted vanes in diffuser would be beneficial in reducing
losses.
|
|
797 |
Free vibration analysis and optimal design of an adhesively bonded
double containment cantilever joint
M Kemal Apalak, Recep Ekici &
Mustafa Yildirim
|
This study presents
three-dimensional free vibration and stress analyses of an adhesively bonded
double containment cantilever joint. Modulus of elasticity, Poissons ratio
and density had negligible effect on natural frequencies and mode shapes of
adhesive joint. ANN models predicted that support length and plate thickness
played important role on natural frequencies, mode shapes and modal strain
energy of adhesive joint whereas adhesive thickness has a minor effect.
Genetic Algorithm combined with ANN model determined optimum geometrical
dimensions, which are satisfying maximum natural frequency and minimum
elastic modal strain energy conditions for each natural frequency and mode
shape of the adhesively bonded double containment cantilever joint.
|
|
807 |
A novel energy efficient machine for plate manufacturing from areca
palm leaf sheath
P Kalita, U S Dixit, P Mahanta &
U K Saha
|
An efficient, high
performance and user-friendly hand-operated machine for bowl and plate
manufacture from areca palm leaf sheath has been designed. New machine is
very effective, as production time of bowl (15 cm diam) has reduced by
50% and that of plate (30 cm
diam) by 30% in comparison to existing pedal-type machine. Cost of new
machine is 50% less than existing machine.
|
S & T and Industrial Research
|
|
812 |
SEM-EDX characterization of an iron-rich kaolinite clay
Pinaki Sengupta, Pradip C Saikia &
Prakash C Borthakur
|
Kaolin clay from Deopani
deposit of Assam
contains high amount of iron. Kaolinite particles, characterized by SEM-EDX,
are pseudohexagonal and arranged in face-to-face pattern. Clay particles are
coated with iron- and titanium-bearing minerals, which can be separated by
wet high intensity magnetic separator Titaniferrous impurities present as
coatings on kaolinite particles are difficult to remove by oxalic acid
treatment.
|
|
819 |
Synthesis of cefadroxil carbonate
P L N Sharma & Dantu Muralikrishna
|
Cefadroxil carbonate (I) is
synthesized from 7-amino desacetoxy cephalosporonic acid (II) condensing with
mixed anhydride that is obtained from reaction of para hydroxy phenyl glycine
dane salt (III) with excess of ethyl chloroformate in presence of excess of
base, N-methyl morpholine.
|
|
821 |
Ecobiotechnology advances in bioproduct formation through microbe
plant interactions (MPI)
Rumpa Biswas & S N Mukhopadhyay
|
Ecobiotechnology using
ecological engineering provides sustainable ecosystems that integrate society
with its environment. Rhizobium sp. growth in root of food producing
plant or as an ecofriendly biofertilizer plays important role in microbe
plant interaction (MPI) systems. This study reviews importance of
ecobiotechnology and aspects in rhizobial-non rhizobial MPI in ecofriendly
fertilizer function for industrial / commercial product formation.
|
|
|
|
|
|
Optimum configuration for
single pressure (SP), dual pressure (DP) and triple pressure (TP) heat
recovery steam generator (HRSG) is presented to improve heat recovery and
thereby exergy efficiency of combined cycle. Deaerator was added to enhance
efficiency and remove dissolved gases in feed water. A new method was
introduced to evaluate low pressure (LP) and intermediate pressure (IP) in
HRSG from local flue gas temperature to get minimum possible temperature
difference in heaters instead of a usual fixation of pressures. Optimum
location for deaerator was found at 1, 3 and 5 bar respectively for SP, DP
and TP in heat recovery at a high pressure (HP) of 200 bar. Results also
showed optimum pressure for air compression and steam reheater by means of
three categories of heat recovery.
|
Author-Reader Platform
|
|
835
|
Instructions to contributors
|
|
|
|
|
|
|
