Abstract of Volume 19(1), 2007
Production potential of electricity from Biomass in
Indian context
PRASHANT
BAREDAR, V.K. SETHI* AND MUKESH PANDEY**
Abstract :
Electricity Production from biomass has been found to be promising method in
the near future.M.P. has
large potential for biomass energy various agricultural residues such as grain
dust, wheat straw and sugar cane bagasse are
available in M.P. as the sources of biomass energy. The future of biomass
electricity generation lies in biomass integrated gasification/ gas turbine
technology, which offers high energy conversion efficiencies. The Electricity
is produced by direct combustion, gasification and pyrolysis
technologies, which are almost ready for commercial scale use. The major
research and developments of the biomass power industry are focusing on gasifier scale up, system analysis and site-specific
commercial feasibility studies.
Key words : biomass, geothermal energy, direct combustion,
gasification, pyrolysis.
Remote sensing of structural features associated
with iron-apatite mineralization in Bafq paleorift, central
MOGHTADERI A.A* AND
Abstract :
Processing and interpretation of remotely sensed data play a significant role
in identification of crustal structures. In the Bafq iron mining region lineaments and curvilinear features
play an important role. Field observations by several
authors already revealed the presence of circular structures, faults and
lineaments in Bafq metallogenic
province. The Bafq metallogenic
province is part of the Lut block, composed of
pre-Cambrian continental basement with Infracambrian
to Triassic cover. This area is a narrow paleorift
that extends northward from south of Bafq town to Saqand and Robat- Posht - Badam. The age of the paleorift is suggested to be 750 - 540 Ma. The Landsat 4 TM data covering the Bafq
region is used to identify lineaments, curvilinear and other structural
controls. Edge enhancement of imagery data of Bafq
deposits also confirms previous studies. The Bafq
iron deposits occur and are closely associated with major structural zones.
Their characteristics are in accord with the structural control of iron oxide
(Cu, U, Au, and REE) mineralization.
Key words:
Bafq region, Edge enhancement, Lineaments,
Curvilinear features, Neoprotrozoic.
Fish
base study of the impacts of dams in different rivers of
JHA
BIBHUTI RANJAN¹, WAIDBACHER HERWIG², SHARMA SUBODH¹ AND STRAIF MICHAEL²
Abstract :
One of the most serious ecological problems of running water systems is the
construction of dams and weirs, which fragments and disrupts the longitudinal
corridor of the rivers and threatens the ecological integrity of the system.
This work assesses the impacts of dams on three different rivers of
Key words:
hydropower dam; impacts; fish; electrofishing; river;
Effect
of solvents and pH variation on electronic spectra of 4-chloro-3,5-dimethyl phenol
M. K.
YADAV*, SURBHI AND SEEMA#
Abstract :
Electronic spectra of 4-chloro-3,5-dimethyl phenol in polar solvents (ethanol,
methanol and chloroform) have been recorded in the region 200 to 400nm. The
effect of change of solvent on electronic transitions of this compound is
explained. The effect of pH variation in ethanol solvent has also been studied.
Key words : Ultraviolet absorption spectra, electronic
absorption bands.
B.S.
YADAV*, ISRAT ALI AND SEEMA+
Abstract :
Fourier-Transform Infrared spectra of 2- (2-hydroxyethyl) pyridine and 1-Ethyl-1,2-dihydro-6-hydroxy-4-methyl-2-oxo-3-pyridine
carbonitrile have been recorded in the region 400 -
4000cm-1. The assignments of fundamentals are proposed and discussed by
assuming both of the molecule under Cs point group
symmetry. The group sensitive fundamentals are compared with those of similar
molecules already reported in the literature.
Key words : FTIR Spectra, Vibrational
assignments.
Association
of bright loop coronal mass ejections with major solar flares and Forbush decreases of cosmic ray intensity
PANKAJ K.
SHRIVASTAVA
Abstract :
Major solar flares events have been taken to study solar longitudinal frequency
distribution of the solar flares in eastern and western hemisphere on the solar
disc for the period of 1996 to 2003. A statistical analysis has been performed
to obtain the relationship between bright loop Coronal Mass Ejections (CMEs) and Major Solar Flares. Almost equal distribution of solar flares in association with CMEs are found in both the eastern and western
hemisphere. In further analysis, it has been investigate that larger number of
solar flares located in western hemisphere in association with CMEs are found to be more effective in producing Forbush effects in cosmic ray intensity.
Status
of water quality of western Yamuna canal from Tajewala to Karnal for safe
irrigation
S.K.
BHASIN1,
Abstract :
The assessment of water quality of
Key
words:
S.N.
SINGH, A.N. THAKUR AND K. SINGH
Abstract :
In the present paper the problem of explosion along a line in a gas cloud
investigated. Similar solutions have been developed describing, the propagation
of a Cylindrical shock in non-uniform atmosphere taking counter gas pressure
and radiation flux into account. Results are illustrated through figures. The
nature of flow variables can be studied easily by these figures.
Key
words: Non ideal gas, Cylindrical shock waves and
Magnetic field.
B.S.
YADAV, VAISHALI AGNIHOTRI, PREETI YADAV and PRADEEP KUMAR
Abstract :
The Laser Raman (50-4000 cm-1) and IR (400-4000 cm-1) spectra of 4 Hydroxy - 3 Nitro Pyridine have been recorded. The Probable
assignment of the molecule is based on observed frequency compared with the
data available for similar molecules already reported.
Key words : Laser Raman
spectra, Vibrational Spectra, In-plane / out- of -
Plane bending.
Fabrication
and study of a dual purpose solar dryer
S. RUGMINI
RADHAKRISHNAN
Abstract : This paper deals with the study of a low cost dual-purpose solar dryer cum cooker with a reflecting mirror, fabricated with a view of dehydrating fruits/vegetables and also for cooking. Performance analysis of this improved dryer reveals that the materials could be dehydrated at a faster rate compared to the open traditional sun drying. It is also found that the dual purpose dryer took only six hours to deprive of the moisture content of 1 Kg of potato, Mango etc from 75% to 20%. In open sun drying, the moisture content is reduced from 75% to 70% only for the same mass of the same material within the same time on the same day. The dual-purpose device is also tested for its cooking efficiency loaded with different foodstuff with and without the booster mirror. The details of the design as well as performance studies of the improved dryer have been reported in this paper.
The
evaluation of Guinea worm disease and economic productivity in
Adewole,
S.O.* and Hassan, A.A.1
Abstract :
In Akoko areas of
The impact of dracunculiasis
on various occupation particularly farming was
observed among the communities. The annual loss due to Guinea worm infection on
rice, maize, cassava and yam production alone was estimated at US$565,834.00
(N67,900, 125.00). The infection rate in agricultural
farming sector was significantly higher (p <0.05) than in the other
occupational sectors. The inability of the infected farmers to engage in active
farming for weeks and months was an important cause of the fall in food (rice, maize, cassava and
yam) production and consequently” poverty and starvation. The average work loss
in untreated farmers ranged from one months to four
months because
Key words : Guinea worm; Agricultural effect; Occupation;
Alternative Labour source,
incapacitation, Akoko.
Synthesis
and antimicrobial activities of some new flavanones
from 3,4-methylenedioxybenzaldehyde
M. V. KADU
AND R.E. KHADSAN
Abstract :
Some new flavanone derivatives have been prepared by
condensation of 1,3-propanediones with 3,4-methylenedioxybenzaldehyde (piperonal) in alkaline ethanol. The structures of these
compounds have been confirmed by spectral analysis IR and NMR etc. The
antimicrobial activities of these compounds have been assessed against test
organisms and were compared with standard drug chloramphenicol.
Determination
of Telmisartan and Hydrochlorothiazide in Binary
Mixture
Fawzy
A. El-Yazbi,a Hassan H. Hammud, *,b Ghassan M. Sonjia
Abstract :
Three sensitive and accurate methods were presented for the determination of Telmisartan (TEL) and Hydrochlorothiazide (HCT) mixture in
dosage forms, where the literature revealed only one method for analysis of
this mixture. The first method utilized derivative spectrophotometry
(zero-crossing point) and derivative compensation technique to determine TEL
and HCT respectively. The second one was based on the use of the first
derivative of the ratio spectra for the simultaneous determination of both
components, where the derivative amplitudes at 278 and 288 nm were selected to
determine TEL and HCT respectively. The third was a reversed phase HPLC method
with UV detection, using mobile phase consisting of acetonitrile-methanol
(65:35, v/v) and a flow rate of 1.5 ml/min.
Key
words: Telmisartan/Hydrochlorothiazide mixture,
Derivative spectrophotometry, Compensation technique,
Derivative ratio, HPLC, Tablets.
Numerical
Solution of Unsteady Free Convective MHD Flow past an Accelerated Vertical
Plate with Suction and Heat Flux
1s.
Abstract :
This paper considers the unsteady free convective MHD boundary layer flow of a
viscous incompressible electrically conducting fluid past an accelerated
infinite vertical plate with suction and heat flux. The governing equations are
solved both analytically and numerically using error function and finite
difference scheme. The flow phenomenon has been characterized with the help of
flow parameters such as, suction parameter (a), magnetic parameter (M), Grashof number for heat transfer (Gr)
and Prandtl number (Pr). The effects of these
parameters on the velocity field, temperature field, skin
friction and heat flux have been studied and the results are presented
graphically and discussed quantitatively. This type of problem has some
relevance in the field of geophysical and cosmical
studies.
2000
Mathematics Subject Classification: 76W05
Key
words and Phrases: Finite Difference, Free Convection, MHD flow, Accelerated
plate, Suction.
Synthesis
and Characterization of some Zn (II) and Fe (III) with substituted Triazoles
RASHMI
TRIPATHI, R.N. SHARMA and
SATYENDRA SINGH*
Abstract : Complexes of Zn (II), Fe (II) and Fe (III) of 3,4
substituted triazole have been isolated in solid
state and characterised on the basis of elemental
analysis, magnetic, UV - visible and I.R. spectral data. Physico-chemical
data provide evidences for the existence of tetrahedral configuration for Zn
(II) and octahedral for Fe (II) & Fe (III) complexes.
Key words : Complexation, I.R., U.V. -
visible, conductivity etc.
Ionophoretic studies on mixed metal-methionine-nta
complexes
TARUN
KUMAR YADAV and SATYENDRA SINGH*
Abstract : Solution ionophoresis is
described for the study of equilibria in a mixed ligand complex system in solution. This method is based on
the movement of a metal ion in electric field with the complexants added in the background electrolyte at pH 8.5
in an Electrophoretic tube. The concentration of the
primary ligand methionine
was kept constant while that of the secondary ligand
(NTA) was varied. The stability constants of the metal methionine-NTA
complexes have been found to be 4.25, 4.10, 3.30, 3.45
for Be (II), Mn (II), Pb
(II) and Cd (II) complexes at 35°C and ionic strength
0.1M.
Key words : Solution Ionophoresis,
Mixed Complex, Stability constant, Methionine.
Solution
electrophoresis Technique in the determination of Stability Constants of Binary
Complexes [Cu (II)/Ni (II)/Co (II)/Zn (II) - Methionine-System]
NIHARIKA
SINGH AND SATYENDRA SINGH*
Abstract : The use of liquid electrophoresis is described for the
assessment of stability constants. Migration of ions in mixed solution has been
investigated and utilized for pinpointing the formation and stability constants
of different complexes formed in the interaction.
Electrical
Conductivity and Thermoelectric power of Cerium-Iron-Transition metal mixed
Oxides
U.P.
Singh, A.N. Thakur, S.V. Singh and S.C. Kumar
Abstract : The compounds of Cerium-iron-transition metal mixed
oxides of the type CeFeTO4 (Where T= Fe, Cr, Mn, Co)
have been prepared by solid state reaction technique and characterized by XRD
pattern. The electrical conductivity (s) and thermoelectric power (S)
measurements on the pressed pellets have been reported in the temperature range
400 to 1200K. It has been found that these compounds are essentially electronic
conductors with s values lying in the range 10-7 to 10-3 W-1 m-1 around 400K.
The maximum value of s has been observed for CeFeMnO4 and lowest for CeFe2O4.
The log sT vs T-1 and S vs T-1 plots have three temperature region separated by
break temperatures T1 and T2 which are same in both the plots. The sign of S
shows that charge carriers are electrons in the studied temperature range. The
electrical conduction in first range (T<T1) is extrinsic and occurs due to
donor type centers. ln the second (T1<T<T2) and
third (T>T2) ranges, electrical conduction is hopping type and occurs due to
hopping of electrons from Fe2+ to Fe3+ in CeFe2O4, Co2+ to Fe3+ in CeFeCoO4,
Fe2+ to Cr3+ in CeFeCrO4 and Mn3+ to Mn4+ centers in CeFeMnO4 in the
temperature range T1<T<T2 and from Fe+2 to Mn3+ centers in the T>T2.
Key
words: Electrical conductivity, thermoelectric power, Cerium-iron- transition
metal mixed oxides. PACS NOS: 72.80Jc, 72.90+Ce
Chemical
constituents of Murraya koenigii
and its larvicidal activity against Aedes aegypti
M.A.
Abstract : The dried ground of the stem barks and roots of Muraya koenigii (L.) Spreng. were soaked in various solvents to give different types of
crude extracts. The separations of crude extracts were carried out using
chromatographic techniques. Work-up procedures on stem barks and roots extracts
have yielded five carbazole alkaloids, which were
identified as mahanimbine (1), girinimbine
(2), murrayanine (3), murrayafoline-A
(4) and 3-methylcarbazole (5), together with b-sitosterol. The structures of these compounds were
established using spectroscopic techniques.
The larvicidal activity of the crude extracts
was tested against the larvae of Aedes aegypti. The crude hexane and chloroform extracts of the
root showed very strong activity against A. aegypti
with LC50 values of 1.75 ppm and 4.33 ppm, respectively. The crude hexane extract of the stem
bark has also showed very strong activity with LC50 of 4.46 ppm.
However, the crude methanol extract of the root showed moderate activity with
LC50 of 58.46 ppm. In addition, the crude chloroform
and methanol extracts from stem bark displayed strong activity with LC50 values
of 16.32 ppm and 24.03 ppm,
respectively.
Key
words: Murraya koenigii, carbazole alkaloids, larvicidal
activity, Aedes aegypti.
Synthesis
and characterisation of some Zr
(IV) complexes with physiologically active di(1-m ethyl phenyl tetrazoline)-5,5' disulphide
R. N.
Sharma*, Piyush Kr. Mishra,
Ravi S. Singh, Ashok Kumar mishra and Anil Kumar**
Abstract : Di-(1-m ethyl phenyl terazoline)-5,5'-disulphide forms very stable complexes
with Zr (IV) ions. All complexes are characterised through elemental analysis, molar
conductance, magnetic susceptibility, electronic and
infrared spectral studies. All complexes are coordinated and tentatively
octahedral structure has been assigned.
High
speed solar wind streams and transient decreases in cosmic ray intensity
PANKAJ
K. SHRIVASTAVA
Abstract : High Speed Solar Wind Streams (HSSWS) is one of the sun
oriented interplanetary phenomena, which produces short-term modulation in
cosmic ray intensity. In this work we have identified forty two events of
sudden storm commencements (SSC) associated HSSWS for the period of 1996 to
2002. Daily values of
P.K. Shrivastava*, N.P. Dixit**, A. Asthana*** and
P. Kulkarni ****
Abstract : Mandeep Khole
cave is situated about 30 km away from, Gandai Block
of Rajnandgaon district head quarter of Chhattisgarh state on Rajnandgaon
- Balaghat road. One can approach this cave through Thakurtola village. This cave is full of stalactites and
stalagmites alongwith thousands of other Karst topography features. Once, inside the cave, one
founds large, amphitheatre-like halls with endless galleys connected to similar
halls of varying size and shape. The Mandeep khole cave is dark inside but when lighted by torch or
other sources of light, of any type, the reflection of light enlivens the
internal environs and the caves seen to radiate a million crystal colours off its walls, stalactites and stalagmites. The
cave is large enough inside to facilitate easy movement within them.