557 research outputs found
Production and Marketing of Milk and Milk Products in United Kingdom and Western Europe with Special Reference to Cooperative Methods and their Application under Indian Conditions
Abstract Not Provided
Recommended from our members
A revised chronostratigraphic framework for International Ocean Discovery Program Expedition 355 sites in Laxmi Basin, eastern Arabian Sea
AbstractInternational Ocean Discovery Program Expedition 355 drilled Sites U1456 and U1457 in Laxmi Basin (eastern Arabian Sea) to document the impact of the South Asian monsoon on weathering and erosion of the Himalaya. We revised the chronostratigraphic framework for these sites using a combination of biostratigraphy, magnetostratigraphy and strontium isotope stratigraphy. The sedimentary section at the two sites is similar and we divided it into six units bounded by unconformities or emplaced as a mass-transport deposit (MTD). Unit 1 underlies the MTD, and is of early–middle Miocene age at Site U1456 and early Paleocene age at Site U1457. An unconformity (U1) created by emplacement of the MTD (unit 2) during the late Miocene Epoch (at c. 9.83–9.69 Ma) separates units 1 and 2 and is identified by a marked change in lithology. Unit 3 consists of hemipelagic sediment with thin interbeds of graded sandstone of late Miocene age, separated from unit 4 by a second unconformity (U2) of 0.5–0.9 Myr duration. Unit 4 consists of upper Miocene interbedded mudstone and sandstone and hemipelagic chalk deposited between c. 8 and 6 Ma. A c. 1.4–1.6 Myr hiatus (U3) encompasses the Miocene–Pliocene boundary and separates unit 4 from unit 5. Unit 5 includes upper Pliocene – lower Pleistocene siliciclastic sediment that is separated from unit 6 by a c. 0.45 Myr hiatus (U4) in the lower Pleistocene sediments. Unit 6 includes a thick package of rapidly deposited Pleistocene sand and mud overlain by predominantly hemipelagic sediment deposited since c. 1.2 Ma
Effect of Nozzle Divergence Angle on Plume Expansion In Outer-Space Conditions
We carry out numerical simulations to investigate
the effect of nozzle divergence angle on back flow of
plume expansion into rarefied atmosphere.
Results are
obtained using open source compressible computational
fluid dynamics (CFD) solver.
Non-equilibrium slip and
jump boundary conditions for velocity and temperature are
implemented to capture rarefaction rarefaction effects in
the slip flow regime. The solver has been validated with
the experimental data for a nozzle flow in the slip flow
regime. We explore the non-linear non-equilibrium gas flow
physics of a supersonic jet expansion. We report results of
pressure, heat and drag coefficients for different divergent
angles (
12
0
,
15
0
and
20
0
) at 80 km altitude conditions. The
slip based results for heat loads significantly under-predict
the no-slip ones, while for pressure and drag coefficients,
deviations are found to be minute. It is noticed that thrust
coefficient of nozzle increases with increase in divergence
angle, however, nozzle with divergent angle of
15
0
led to
minimum drag and heat transfer load on the critical region.
The current study is important from the perspective of the
overall aero-thermodynamic design of a typical supersonic rocket model operating under rarefied conditions
Pregnancy outcome in patients with intrahepatic cholestasis of pregnancy: an observational case control study
Background: Intrahepatic cholestasis of pregnancy (IHCP) is the most common cholestatic liver disease, which may impact the foeto-maternal health. The present study is conducted to determine various factors including maternal and neonatal outcome in IHCP comparing with the controls.Methods: In this prospective case control study, pregnancy with IHCP is compared with asymptomatic non-IHCP controls. Classical pruritus, icterus, elevated liver enzymes were considered in diagnostic criteria of IHCP. Dermatological lesion, acute or chronic liver disease, and other causes of pruritus were excluded from study.Results: Out of 100 patients, 50 cases and 50 controls were included in this study. Incidence of IHCP was seen 3.914% of which 66% were primi presented maximum at 31-33 weeks. 86% of IHCP responded to medication. Mean value of ALT, AST and ALP was found significantly raised (p value-<0.001) in IHCP patients. 66% in IHCP and 64% in non-IHCP group had normal delivery and remaining 34% and 36 % had caesarean delivery respectively. There was no significant increase in foetal distress or low Apgar (<7 at 5 min) at birth or adverse neonatal or maternal outcome in IHCP group. However, there was a statistically high meconium stained liquor (MSL), neonatal jaundice, IUGR and NICU admission were noted in the IHCP group in comparison to non-IHCP group.Conclusions: There is a significant incidence of IHCP in the obstetrical population. The biochemical changes, meconium stained liquor, neonatal jaundice, IUGR and NICU admission were significantly high in IHCP in pregnancy
Effect of plant canopy shape and flowers on plant count accuracy using remote sensing imagery
Separate experiments were conducted to evaluate the effect of plant canopy shape and presence of flowers on counting accuracy of container-grown plants. Images were taken at 12 m above the ground. Two species of juniper (Juniperus chinensis L. ‘Sea Green’ and Juniperus horizontalis Moench ‘Plumosa Compacta’) were selected to evaluate plant shape and Coral Drift ® rose (Rosa sp. ‘Meidrifora’) was used to evaluate the presence of flowers on plant count. Counting algorithms were trained using Feature Analyst (FA). Total counting error, false positives and unidentified plants were reported. There was no difference between all variables measured when an algorithm trained with an image displaying regular or irregular plant canopy shape was applied to images displaying both plant canopy shapes even though the canopy shape of ‘Sea Green’ is less compact than ‘Plumosa Compacta’. There was a significant difference in all variables measured between images of flowering and non-flowering plants when non-flowering ‘samples’ were used the train the counting algorithm in FA; total counting errors and unidentified plants was greater for flowering plants. In this specific case, applying an algorithm that did not include a training set displaying flowers, resulted in a less accurate count. Algorithms developed using FA appears to be fairly robust under these conditions
Hydrographic changes in the Agulhas Recirculation Region during the late Quaternary
The strength of Southern Hemisphere westerlies, as well as the positions of
the subtropical front (STF), Agulhas Current (AC) and Agulhas Return Current
(ARC) control the hydrography of the southwestern Indian Ocean. Although
equatorward migration of the STF and reduction in Agulhas leakage were
reported during the last glacial period, the fate of ARC during the last
glacial–interglacial cycle is not clear. Therefore, in order to understand
changes in the position and strength of ARC during the last
glacial–interglacial cycle, here we reconstruct hydrographic changes in the
southwestern Indian Ocean from temporal variation in planktic foraminiferal
abundance, stable isotopic ratio (δ<sup>18</sup>O) and trace elemental ratio
(Mg/Ca) of planktic foraminifera <i>Globigerina bulloides</i> in a core
collected from the Agulhas Recirculation Region (ARR) in the southwestern
Indian Ocean. Increased abundance of <i>G. bulloides</i> suggests that the
productivity in the southwestern Indian Ocean increased during the last glacial
period which confirms previous reports of high glacial productivity in the Southern Ocean. The
increased productivity was likely driven by the intensified Southern
Hemisphere westerlies supported by an equatorward migration of the
subtropical front. Increase in relative abundance of <i>Neogloboquadrina
incompta</i> suggests seasonally strong thermocline and enhanced advection of
southern source water in the southwestern Indian Ocean as a result of
strengthened ARC, right through MIS 4 to MIS 2, during the last glacial
period. Therefore, it is inferred that over the last glacial–interglacial
cycle, the hydrography of the southwestern Indian Ocean was driven by
strengthened westerlies, ARC as well as a migrating subtropical front
Stellar Wind Accretion in GX301-2: Evidence for a High-density Stream
The X-ray binary system GX301-2 consists of a neutron star in an eccentric
orbit accreting from the massive early-type star WRAY 977. It has previously
been shown that the X-ray orbital light curve is consistent with existence of a
gas stream flowing out from Wray 977 in addition to its strong stellar wind.
Here, X-ray monitoring observations by the Rossi X-ray Timing Explorer (RXTE)/
All-Sky-Monitor (ASM) and pointed observations by the RXTE/ Proportional
Counter Array (PCA) over the past decade are analyzed. We analyze both the flux
and column density dependence on orbital phase. The wind and stream dynamics
are calculated for various system inclinations, companion rotation rates and
wind velocities, as well as parametrized by the stream width and density. These
calculations are used as inputs to determine both the expected accretion
luminosity and the column density along the line-of-sight to the neutron star.
The model luminosity and column density are compared to observed flux and
column density vs. orbital phase, to constrain the properties of the stellar
wind and the gas stream. We find that the change between bright and medium
intensity levels is primarily due to decreased mass loss in the stellar wind,
but the change between medium and dim intensity levels is primarily due to
decreased stream density. The mass-loss rate in the stream exceeds that in the
stellar wind by a factor of 2.5. The quality of the model fits is significantly
better for lower inclinations, favoring a mass for WRAY 977 of 53 to 62 Msun.Comment: 19 pages, 6 figure
Critical behavior at Mott-Anderson transition: a TMT-DMFT perspective
We present a detailed analysis of the critical behavior close to the
Mott-Anderson transition. Our findings are based on a combination of numerical
and analytical results obtained within the framework of Typical-Medium Theory
(TMT-DMFT) - the simplest extension of dynamical mean field theory (DMFT)
capable of incorporating Anderson localization effects. By making use of
previous scaling studies of Anderson impurity models close to the
metal-insulator transition, we solve this problem analytically and reveal the
dependence of the critical behavior on the particle-hole symmetry. Our main
result is that, for sufficiently strong disorder, the Mott-Anderson transition
is characterized by a precisely defined two-fluid behavior, in which only a
fraction of the electrons undergo a "site selective" Mott localization; the
rest become Anderson-localized quasiparticles.Comment: 4+ pages, 4 figures, v2: minor changes, accepted for publication in
Phys. Rev. Let
Detecting Determinacy in Prolog Programs: 22nd International Conference, ICLP 2006, Seattle, WA, USA, August 17-20, 2006. Proceedings
In program development it is useful to know that a call to a Prolog program will not inadvertently leave a choice-point on the stack. Determinacy inference has been proposed for solving this problem yet the analysis was found to be wanting in that it could not infer determinacy conditions for programs that contained cuts or applied certain tests to select a clause. This paper shows how to remedy these serious deficiencies. It also addresses the problem of identifying those predicates which can be rewritten in a more deterministic fashion. To this end, a radically new form of determinacy inference is introduced, which is founded on ideas in ccp, that is capable of reasoning about the way bindings imposed by a rightmost goal can make a leftmost goal deterministic
- …