11,786 research outputs found
Influence of extrusion conditions on the colour of millet-legume extrudates using digital imagery
peer-reviewedColour acts as one of the triggers for acceptance of snack foods. Digital imaging in
conjunction with Adobe Photoshop can help identification of variations in the colour of
extruded products. Response surface methodology-based central composite rotatable
designed experiments were conducted to understand the colour components and overall
acceptability (OAA) of extruded snacks made from millet–legume blends, 12–28%
legume, at different moisture content (MC) of 12–24% wet basis (w.b.), extruded at
varying die head temperatures (DHT) from 160–200 °C, barrel temperatures from
100–140 °C and screw speeds of 100–140 rpm. A simple digital camera was used for
capturing the images of the extrudates. An L*a*b* colour model (where L* is the black/
white element, a* is green/red and b* is blue/yellow) was used for colour characterisation
and OAA was determined by a hedonic scale. It was inferred from the analysis of
the resulting statistically valid second order models for the responses that all the colour
components were significantly affected by the amount of legume in the extruder feed
and by the DHT. It was also observed that DHT, synergistically with other processing
parameters, had a significant effect on all the responses. The OAA was highest for the
extrudates with higher L* values. Optimum processing conditions were derived while
the responses adhered to constraints. The responses of the extrudates prepared under
optimum conditions exhibited no significant variation from model predicted values
Global Persistence Exponent in Critical Dynamics: Finite Size induced Crossover
We extend the definition of a global order parameter to the case of a
critical system confined between two infinite parallel plates separated by a
finite distance . For a quench to the critical point we study the
persistence property of the global order parameter and show that there is a
crossover behaviour characterized by a non universal exponent which depends on
the ratio of the system size to a dynamic length scale
Preparation of eicosapentaenoic acid concentrates from sardine oil by Bacillus circulans lipase
An extracellular lipase extracted from Bacillus circulans, isolated from marine macro alga, Turbinaria conoides, was used to prepre n-3 polyunsaturated fatty acid(PUFA) concentrates from sardine oil trygliceride
Generalised Einstein Relation for Hot Brownian Motion
The Brownian motion of a hot nanoparticle is described by an effective Markov
theory based on fluctuating hydrodynamics. Its predictions are scrutinized over
a wide temperature range using large-scale molecular dynamics simulations of a
hot nanoparticle in a Lennard-Jones fluid. The particle positions and momenta
are found to be Boltzmann distributed according to distinct effective
temperatures and . For we
derive a formally exact theoretical prediction and establish a generalised
Einstein relation that links it to directly measurable quantities
Exact mean field inference in asymmetric kinetic Ising systems
We develop an elementary mean field approach for fully asymmetric kinetic
Ising models, which can be applied to a single instance of the problem. In the
case of the asymmetric SK model this method gives the exact values of the local
magnetizations and the exact relation between equal-time and time-delayed
correlations. It can also be used to solve efficiently the inverse problem,
i.e. determine the couplings and local fields from a set of patterns, also in
cases where the fields and couplings are time-dependent. This approach
generalizes some recent attempts to solve this dynamical inference problem,
which were valid in the limit of weak coupling. It provides the exact solution
to the problem also in strongly coupled problems. This mean field inference can
also be used as an efficient approximate method to infer the couplings and
fields in problems which are not infinite range, for instance in diluted
asymmetric spin glasses.Comment: 10 pages, 7 figure
Static displacements and chemical correlations in alloys
Recent experiments in metallic solid solutions have revealed interesting
correlations between static pair-displacements and the ordering behavior of
these alloys. This paper discusses a simple theoretical model which
successfully explains these observations and which provides a natural framework
for analyzing experimental measurements of pair-displacements and chemical
correlations in solid solutions. The utility and scope of this model is
demonstrated by analyzing results of experiments on and alloys
and results of simulations of and alloys.Comment: 12 page
Fatty acid profiles of spiny lobster (Panulirus homarus) phyllosoma fed enriched Artemia
Three di¡erent life stages of spiny lobster larvae
(phyllosoma) of Panulirus homarus were fed A1-Selco-
enriched Artemia in two culture treatments, one
with the microalgae Nannochloropsis salina (green
water) and the other without the microalgae (clear
water) to assess the ability to manipulate their fatty
acid composition. Phyllosoma fed with 3-h A1-
Selco-enriched Artemia salina attained Stage VIII
(5.3mm) and StageV (3.4mm) in 42 days in the green
and clear water treatments respectively. The higher
content of the essential fatty acids in N. salina (eicosapentaenoic
acid, 25.8%; arachidonic acid, 9.5%;
and docosahexaenoic acid, 4.2%) in the green water
system increased the fatty acid content of the live
food Artemia, and ultimately the phyllosoma
On the relative fishing power of trawlers operated off Cochin
All vessels do not have same fishing power. The absolute fishing power of a vessel is measured in terms of the fishing mortality generated by it. But since the latter cannot be measured directly, a relative fishing power of a
vessel has been defined as the ratio of the catch per unit fishing time of the vessel to that of another fishing vessel taken as standard when both are fishing on the same ground and the same density of fish. In this way, a
fishing power can be allotted to each vessel. Once the relative fishing power of different vessels are known, it will be easy to Compute the total intensity of fishing effort, an accurate estimate of which is so essential in
the study of stock assessments of fisheries
Multi-Phase Manganese Mineralization in the Noamundi Synclinorium, East Indian Shield
Manganese mineralization associated with phyllites in and around Joda, Odisha belongs to the Iron Ore Group of Noamundi basin and is a part of Jamda-Koira belt of East Indian Shield. The present study area comprises low to medium grade tectonites containing economic resources of both iron and manganese. Present study is concentrated on Manganese mineralization. Field study and petro-mineralogical observations reveal syngenetic character of manganese ores comprising lowT higher oxides viz. pyrolusite, cryptomelane, manganite as major Mn-minerals along with highT lower oxides viz. jacobsite, bixbyite, braunite and hausmannite as minor Mn-minerals. The Mn-ore bodies and associated phyllites have undergone multiple phases of deformation and metamorphism followed by hydrothermal and supergene processes. Four deformational phases have been deciphered during field study. Geochemical analyses of ores and phyllitic host rocks show high values of Al2O3, TiO2, Ba, Co, Ni, Cr, Cu, Sc, V, As, Zn but depletion of Sr, Yb, Sm, Nb. Geochemical data infer ores to be a recycling product originally derived from a mafic crustal source of tholeiitic character. Age data obtained from Sm-Nd ratio of two rock samples are 3.46 Ga and 2.79 Ga. Present work provides a critical assessment on the multiphase mineralization of manganese ores
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