133 research outputs found
Multiplet Separation Factors in the Spectrum of Chromium II
Formulae for the Multiple Separation factors in the configurations
3d4. 4s and 3d4. 4p are derived and used for the calculation of the Multiple Separation. The values are compared with the experimental data
Hydrology of the Korapuzha estuary, Malabar, Kerala State
A preliminary enquiry on the hydrological and planktological conditions in the
river mouth region was conducted during the period 1950-52 and the results published
in an abstract form (George, 1953a). This study was later extended to
cover the 25 Ian seaward region of the estuary in 1954. As is well known, the
Malabar coast is highly productive from the fisheries point of view and it was
also observed that the sea waters of the inshore region off Calicut are rich in plankton
and nutrient salts (George, 1953b). Results of the present investigation would
therefore serve to assess the influence of land drainage in the enrichment and replenishment
of the coastal waters and allied factors
Impact of recent cyclone on the marine fishery sector along the east Godavari and Visakhapatnam districts of Andhra Pradesh
A cyclone which lashed along the coastal Andhra Pradesh on the night of 6-11-'96 resulted in the loss of thousands of human lives and materials. The coast of East Godavari and parts of Visakhapatnam districts were the worst hit areas with high velocity winds bringing in huge tidal waves which inundated the fish landing centres
Influence of solvents on the -OH and >C=O stretching frequencies of benzoin and methyl mandelate
The influence of solvents on the intramolecular hydrogen bond in benzoin and methyl mandelate is studied using infrared spectroscopy. Non-oxygenated solvents could not break the chelation but could shift the OH frequencies to a small extent. Oxygenated solvents like diethyl ether, acetone and dioxan could break the chelation and form intermolecular hydrogen bonds. The relative intensities of the bands of intra and intermolecular hydrogen bonds gave an indication of the donor ability of these solvents, which is linked with their capacity to break the intramolecular hydrogen bonding. Making use of the symmetry numbers of the OH band, the order of the interacting abilities of the oxygenated solvents in breaking the chelation is ascertained and explained
Studies on the preservation of fish by pickling
Pickling with salt, vinegar, sugars and spices forms a traditional method
of food preservation and is also widely employed for fish curing. A great
variety of fishery products prepared with vinegar and spices enjoy wide
popularity in Germany and other north European countries. Pickling is
also practised in the East in countries like China, Japan and the Philippines
(Jarvis, 1950). Although pickled products are of a semi-perishable nature
since the concentrations of salt and vinegar employed are limited by considerations
of palatability, they possess a greater appeal to consumers than
salted and dried fish. Moreover these methods are better suited for curing
fatty fish which are susceptible to rancidity in other salting methods. Apart
from a few spiced and pickled products like PADDA and MOLLEI prepared
on a domestic scale from Seer fish, Colombo Cure of the West Coast forms
the chief commercial method in India which employs principles of pickling.
Mackerels, Seer and non-fatty sardines are treated by this process and Malpe
in South Kanara exports considerable quantities of Colombo cured fish to
Ceylon (Nicholson, 1930). Malabar tamarind or ' Goruka Puli', the dried
fleshy pod of Garcinia cambogea is used as an adjunct to salt in order to
obtain the desired acidity. Though Goruka Puli is specially brought from
Ceylon for this purpose, inferior varieties like ' Koda Puli' are also used
on a smaller scale. The objectives of the present investigation were to study
the chemical aspects of the pickling methods with a view to improve the
existing practices and to explore the possibilities for a wider application
of pickling methods to smaller varieties of fish like sardines which are mainly
sundried at present. Studies on the preparation of high quality spiced
and pickled products on the lines of foreign recipes like ' Marinated Herring
' and ' Russian Sardine' were also undertaken in an effort to develop
new products for our fishing industry
Preliminary investigations on the pit curing of fish in India
Among the methods adopted for the curing of fish in India the practice of
pit curing common in certain parts of the Madras State and the neighbouring
region of Travancore is of considerable interest for several reasons.
Broadly speaking the method consists in burying the fish after salting in
mat lined pits for varying periods ranging from a few days to a fortnight
or more before marketing in a partially dried condition without any further
washing or drying. The products possess a distinct flavour and taste much
appreciated by some sections of the public in the eastern parts of Madras
State. However the process is mainly adopted by private curers outside
the Government curing yards and the quality of the commercial samples
leaves much to be desired due to their unwholesome appearance and commonly
observed infestation with maggots (Krishna Pillai et ah, 1956). Since
pit curing forms one of the main methods of curing around Mandapam,
it was considered desirable to undertake a comprehensive investigation of
the local practices relating to this cure and the keeping quality of the products.
A knowledge of the biochemical changes occurring during maturation
under semi-anaerobic conditions which constitute the basis of this cure
is necessary for obtaining a better product by this method
Fusion Nuclear Data activities at FNL, IPR
This paper briefly describes the current fusion nuclear data activities at Fusion Neutronics Laboratory, Institute for Plasma Research. It consist of infrastructure development for the cross-section measurements of structural materials with an accelerator based 14 MeV neutron generator and theoretical study of the cross-section using advanced nuclear reaction modular codes EMPIRE and TALYS. It will also cover the proposed surrogate experiment to measure 55Fe (n, p) 55Mn using BARC-TIFR Pelletron facility at Mumbai
- …