995 research outputs found
Solutions of System of Fractional Partial Differential Equations
In this paper, system of fractional partial differential equation which has numerous applications in many fields of science is considered. Adomian decomposition method, a novel method is used to solve these type of equations. The solutions are derived in convergent series form which shows the effectiveness of the method for solving wide variety of fractional differential equations
Technology of processing mussel meat
Green mussel (Perna viridis) and brown mussel (P.indica) are available in substantial quantities from their natural beds along the south- east and south-west coasts of India respectively. Mussel is locally collected for its meat which is consumed in the nearby areas. Mussel meat normally finds favour with people of low income group and that too when the fish is scarce or costly, which often results in poor economic returns to the collector
Phytoplankton
Investigations on phytoplankton of the Indian Seas has assumed
great significance during the last 5 decades. As these microscopic
organisms fluctuated in response to climatic changes,
water movements, seasonal variations, nutrient content of the water
etc. they form an important and convenient link in the assessment
of the stock of potential resources. The shelf and oceanic
waters of the Indian seas show fluctuations in the standing crop of
phytoplankton due to the effect of two monsoons. Available data
indicated that the waters along the west coast of India are more
fertile than that along the east coast mainly due to upwelling and
other favourable factors conducive to phytoplankton growth. Some
of the ecological factors contributing to the pattern of production of
phytoplankton are also briefly discussed
Primary production
Studies on primary pruuuciion oj ine Indian Seas in general
and adjacent ecosystems such as estuaries, mangroves, mud banks
and coastal environments in particular are briefly discussed, in the
light oJ the data collected over the years by various Expeditions
and also by the investigations conducted in localised regions. The
results indicated that the general trend of primary production vary
both in space and time and also a seaward decrease in the
production. The factors affecting and favouring the primary
production of the Indian Seas is also presented. The annual
production rates of west coast and east coast andpotential estimates
of resources derivedfrom primary production is also discussed. The
annual carbon production for the EEZ of India has been com^puted
as 283 million tonnes and potential harvestable resources available
in this region derived as 5.5 million tonnes, based on primary
production. Future investigations on productivity through
chlorophyll analysis arc also projected
Preliminary studies on nannoplankton productivity
The contribution of the nannoplankton to the total productivity
was studied for nine months in coastal waters of Cochin. On an average,
- nannoplankton accounted for 66.40% of the observed productivity. The
mean assimiIation ratios between the total algal and nannoplankton fraction
were very low (1.29 and 0.94 respectively)
Proceedings of the Second workshop on scientific results of FORV Sagar Sampada
Since inception in 1984, the Fisheries and Oceanographic Research Vessel
Sagar Sampada, with sophisticated modern facilities onboard, has undertaken more
than 140 cruises all over the Indian Ocean primarily in our Exclusive Economic Zone
for fishery and oceanographic survey. Scientists from many institutions have made
use of this facility to explore the resource potential in our sea and to understand its
correlation with the environmental parameters. These survey and exploration efforts
are continuing.
This volume contains many papers which are the outcome of research work carried
out onboard 'Sagar Sampada' during last five years (1989-1993) and presented in a
Workshop to evaluate the scientific work. About 60 papers, included in this volume,
bring out the results pertaining to environmental assessment, hydrology, productivity
estimates, fishery resources availability, fishing technology, pollution monitoring etc.
These relate mainly to the Arabian Sea, Bay of Bengal and Lakshadweep, Andaman
and Nicobar Islands groups in the EEZ of India. These efforts along with other
mission-oriented cruises have yielded valuable information on the fishery resources
and their distribution in space and time
Color Skyrmions in the Quark-Gluon Plasma
We consider the general formulation of nonabelian fluid dynamics based on
symmetry considerations. We point out that, quite generally, this admits
solitonic excitations which are the color analog of skyrmions. Some general
properties of the solitons are discussed.Comment: LaTeX, 13 pages, references adde
Structural study, NCA, FTIR, FT-Raman spectral investigations, NBO analysis and thermodynamic functions of N-benzyloxy carbonyl-L-alanine
The FTIR and FT-Raman spectra of N-benzyloxy carbonyl-L-alanine have been recorded and analyzed. Natural bond orbital analysis has been carried out for various intra-molecular interactions that are responsible for the stabilization of the molecule. HOMO-LUMO energy gap has been computed with the help of density functional theory. The statistical thermodynamic functions (heat capacity, entropy, vibrational partition function and Gibbs energy) have been obtained for the range of temperature 100-1000 K. The infrared and Raman spectra have been also predicted from the calculated intensities. Comparison of the experimental and theoretical spectra values provides important information about the ability of the computational method to describe the vibrational modes. In addition to these, Mulliken’s atomic charges associated with each atom have also been reported and mapped molecular electrostatic potential (MEP) surfaces have also been performed with the same level of DFT
Reverse Phase Liquid Chromatography Coupled with Quadra pole- Time of Flight Mass Spectrometry for the Charecterisation of Phenolics from Acacia Catechu (L.f.) Willd.
A rapid method was developed for the identification of phenolics from Acacia Catechu .The analysis ofphenolic compounds was carried out by reversed-phase high-performance liquid chromatography (RPHPLC)coupled to electrospray ionization-time-of-flight mass spectrometry (ESI-Q-TOF-MS). Theaccurate mass data for the molecular ions were processed using the software Mass Hunter workstation (Agilent Technologies), which provided a list of possible elemental formulas by using theMolecular featured extraction editor. The subsequent structure characterization was carried out by atandem mass spectrometric method. Fragmentation behavior of phenolic compounds was investigatedusing ion trap mass spectrometry in negative mode. The total fragmentation of the compound ionleading to other fragments was corroborated by MS–MS. Five phenolic compounds have beenidentified from the methanolic extract of Acacia Catechu
Vibrational (FT-IR and FT-Raman) spectra and quantum chemical studies on the molecular structure of p-hydroxy-N-(p-methoxy benzylidene) aniline
The FT-IR and FT-Raman spectra of p-hydroxy-N-(p-methoxy benzylidene) aniline have been recorded in the region 4000-400 cm−1 and 3500-100 cm−1, respectively. The optimized molecular geometry, vibrational frequencies in ground state have been calculated using density functional B3LYP methods (DFT) with 6-31+G(d,p) and 6-311++G(d,p) basis sets. The observed FT-IR and FT-Raman vibrational frequencies have been analysed and compared with theoretically predicted vibrational frequencies. The geometries and normal modes of vibration obtained from B3LYP/6-311+G(d,p) and B3LYP/6-311++G(d,p) methods are reliable compared with the experimental data. The natural bonding orbital (NBO) analysis of the investigated molecule have been computed using DFT/ B3LYP/6-311++G(d,p) calculations. The calculated HOMO and LUMO energies show that charge transfer occurs within molecule
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