1,273 research outputs found
Bubbling Supertubes and Foaming Black Holes
We construct smooth BPS three-charge geometries that resolve the zero-entropy
singularity of the U(1) x U(1) invariant black ring. This singularity is
resolved by a geometric transition that results in geometries without any
branes sources or singularities but with non-trivial topology. These geometries
are both ground states of the black ring, and non-trivial microstates of the
D1-D5-P system. We also find the form of the geometries that result from the
geometric transition of N zero-entropy black rings, and argue that, in general,
such geometries give a very large number of smooth bound-state three-charge
solutions, parameterized by 6N functions. The generic microstate solution is
specified by a four-dimensional hyper-Kahler geometry of a certain signature,
and contains a ``foam'' of non-trivial two-spheres. We conjecture that these
geometries will account for a significant part of the entropy of the D1-D5-P
black hole, and that Mathur's conjecture might reduce to counting certain
hyper-Kahler manifolds.Comment: 40 pages, harvmac. v2 references added, typo correcte
Solutions to Cosmological Problems with Energy Conservation and Varying c, G and Lambda
The flatness and cosmological constant problems are solved with varying speed
of light c, gravitational coupling strength G and cosmological parameter
Lambda, by explicitly assuming energy conservation of observed matter. The
present solution to the flatness problem is the same as the previous solution
in which energy conservation was absent.Comment: 5 pages, Replaced with LaTex file with minor change
Stock assessment of migratory fish species based on localized data - oceanic skipjack tuna pole and line fishery at Minicoy as a case study
The highly migratory nature of the skipjack tuna (Katsuwonus pelamis) coupled with inadequacy of data which is likely to
pover only a fringe of its entire geographical distributior range poses problems in the estimation of population parameters
and stock size of this species. The present study is ar attempt to evaluate estimates of these parameters based or
pole and line fishery data collected during 1985 and 1986 at Minicoy, Lakshadweep only. Problems encountered in the estimation
of migratory stocks as exemplified by skipjack tuna are presented and discussed
Development and storage characteristics of dehydrated salt mince from low priced fish
The study showed that less initial moisture with high salt content will be the best condition for enhanced storage life of dehydrated salt mince. Between sample I (10% salt per meat weight) and sample II (15% salt per meat weight) the latter was comparatively better in colour, odour and longer shelf-life. At room temperature the dehydrated salt mince has not showed any increase in total bacterial count. It is also found that the storage life of the salt mince can be enhanced to a significant extent by lowering the moisture content to below 10% and increasing the salt content to above 30%. Peroxide value, free fatty acid value, total volatile nitrogen and trimethylamine registered gradual increase during storage at room temperature for all the three samples. Among the three samples, the sample treated with 0.1% citric acid and 0.125% butylated hydroxy anisole was comparatively better in appearance and showed less rancidity as indicated by TBA values, up to a period of 15 weeks and thereafter all the three samples were almost similar in storage characteristics. Hence, the treatment with citric acid and B.H.A. has apparently not much significance in improving shelf-life and quality of salted dehydrated fish mince
Label-Free Metabolic Classification of Single Cells in Droplets Using the Phasor Approach to Fluorescence Lifetime Imaging Microscopy.
Characterization of single cell metabolism is imperative for understanding subcellular functional and biochemical changes associated with healthy tissue development and the progression of numerous diseases. However, single-cell analysis often requires the use of fluorescent tags and cell lysis followed by genomic profiling to identify the cellular heterogeneity. Identifying individual cells in a noninvasive and label-free manner is crucial for the detection of energy metabolism which will discriminate cell types and most importantly critical for maintaining cell viability for further analysis. Here, we have developed a robust assay using the droplet microfluidic technology together with the phasor approach to fluorescence lifetime imaging microscopy to study cell heterogeneity within and among the leukemia cell lines (K-562 and Jurkat). We have extended these techniques to characterize metabolic differences between proliferating and quiescent cells-a critical step toward label-free single cancer cell dormancy research. The result suggests a droplet-based noninvasive and label-free method to distinguish individual cells based on their metabolic states, which could be used as an upstream phenotypic platform to correlate with genomic statistics. ┬й 2018 International Society for Advancement of Cytometry
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Marine Fish Calendar. 13. Minicoy
A 'Marine Fish Calendar' for Minicoy is presented here based on the .data collected during April, 1984 to March, 1987. Pole and line and surface trolling gears were responsible for about 95.85% and 4.14% respectively of the total fish landed; catch by hooks and line was negligible (0.01 %)
Biochemical changes of fish fingers held at frozen storage
The frozen storage characteristics of fish fingers made out of two different species, differing in lipid content for a period of six months are outlined. The study reveals that the lipid content of the fish meat used for making fish fingers influences the storage pattern in terms of the chemical parameters like peroxide value, thiobarbituric acid value and free fatty acids. The introduction of monosodium glutamate has improved the flavour of the fish fingers. Further, the application of batter on the fish fingers imparted some protective effect in the case of semi-fatty fish
Mariculture nutrition research at CMFRI
Mariculture is now accepted as an alternative
to augment marine fish production in the
backdrop of dwindling capture fisheries.
CMFRI has prioritized mariculture research
in three areas which are marine food fish
production, production of high value marine
cru staceans, and ca ptive breeding and
propagation of selected marine ornamental
fishes for breeding and conserva tion
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