2,125 research outputs found
Pendapatan dan Kesejahteraan Anggota Ksp Tani Makmur Kecamatan Natar Kabupaten Lampung Selatan
This research aimed to analyze cassava farming income received by members, the cooperative economic benefits received by members, revenue structure of farm household of KSP Tani Makmur members, and the level of welfare of members of KSP Tani Makmur. This research was conducted in KSP Tani Makmur, Natar Sub-district South Lampung District, in which total members were 32 cassava farmers. The data analysis was analysis of income, cooperative economic benefit analysis, analysis of household income, and analysis of the level of well-being according to BPS 2007. The result showed that the income of cassava farmers was on high level category with the highest contribution from cassava on farming. Based on average income per capita, the income of farmers was already above the poverty line. The economic advantages of indirect cooperative which was received by members still relatively low. While the direct economic advantage in form of fertilizers loans becoming an active member motivation in cooperative. The revenue structure of cassava farmer obtained from various sources. Those were cassava, yard, livestock, farm workers, trader, head of villagers, and cooperative. The level of farmers' welfare based on BPS method in 2007, we got the result that all the farmer members fit into the category of being wellfare
Assessment of Liver Transplant Donor Biopsies for Steatosis Using Frozen Section: Accuracy and Possible Impact on Transplantation
Background: Pre-transplant frozen section evaluation for macrovesicular steatosis has long been used as a guide for donor liver utility, but may not agree with the permanent section evaluation. This study sought to evaluate the accuracy of frozen section in an active transplant service. Methods: Retrospective review of cases where frozen section analysis was undertaken to assess percent macrovesicular steatosis was performed, comparing the frozen section diagnosis to the final diagnosis. Results: Ninety-six cases were available for review. In 7 of these cases (7%), the difference between the two slides was significant; that is, the difference between the two slides may have contributed to a change in clinical management at a cutoff of 30%. Conclusions: Clinicians need to be aware that accuracy is satisfactor
Is climate change causing the range contraction of Cape Rock-jumpers (\u3ci\u3eChaetops frenatus\u3c/i\u3e)?
Species distribution models often suggest strong links between climate and species\u27 distribution boundaries and project large distribution shifts in response to climate change. However, attributing distribution shifts to climate change requires more than correlative models. One idea is to examine correlates of the processes that cause distribution shifts, namely colonization and local extinction, by using dynamic occupancy models. The Cape Rock-jumper (Chaetops frenatus) has disappeared over most of its distribution where temperatures are the highest. We used dynamic occupancy models to analyse Cape Rock-jumper distribution with respect to climate (mean temperature and precipitation over the warmest annual quarter), vegetation (proportion of natural vegetation, fynbos) and land-use type (protected areas). Detection/non-detection data were collected over two phases of the Southern African Bird Atlas Project (SABAP): 1987–1991 (SABAP1) and 2008–2014 (SABAP2). The model described the contraction of the Cape Rock-jumper\u27s distribution between SABAP1 and SABAP2 well. Occupancy probability during SABAP1 increased with the proportion of fynbos and protected area per grid cell, and decreased with increases in mean temperature and precipitation over the warmest annual quarter. Mean extinction probability increased with mean temperature and precipitation over the warmest annual quarter, although the associated confidence intervals were wide. Nonetheless, our results showed a clear correlation between climate and the distribution boundaries of the Cape Rock-jumper, and in particular, the species\u27 aversion for higher temperatures. The data were less conclusive on whether the observed range contraction was linked to climate change or not. Examining the processes underlying distribution shifts requires large datasets and should lead to a better understanding of the drivers of these shifts
Kinks in the Kondo problem
We find the exact quasiparticle spectrum for the continuum Kondo problem of
species of electrons coupled to an impurity of spin . In this
description, the impurity becomes an immobile quasiparticle sitting on the
boundary. The particles are ``kinks'', which can be thought of as field
configurations interpolating between adjacent wells of a potential with
degenerate minima. For the overscreened case , the boundary has this kink
structure as well, which explains the non-integer number of boundary states
previously observed. Using simple arguments along with the consistency
requirements of an integrable theory, we find the exact elastic -matrix for
the quasiparticles scattering among themselves and off of the boundary. This
allows the calculation of the exact free energy, which agrees with the known
Bethe ansatz solution.Comment: 9 pages +1 figur
The beta function of the multichannel Kondo model
The beta function of the multichannel Kondo model is calculated exactly in
the limit of large spin N and channel number M=gamma*N, with constant gamma.
There are no corrections in any finite order of 1/N. One zero is found at a
finite coupling strength, showing directly the Non--Fermi liquid behavior of
the model. This renormalization group flow allows to introduce a variational
principle for the entropy, to obtain the low temperature thermodynamics. Such
in particular the low temperature thermodynamics of the non--crossing
approximation to the Kondo model becomes accessible.Comment: 4 page
Welding
Friction welding method is one of the most simple, economical and highly productive methods in joining similar and dissimilar metals. It is widely used in the automotive, aircraft and aerospace industrial applications. For many applications it is often necessary to join aluminium (6061) to make finished part. In this project the main aim is to weld the small thickness of aluminum (6061) plates for that friction welding machine used is of higher cost. Here the aim is reduce the cost of friction welding machine with simple parts like three phase A.C induction motor, bush, frame stand, friction tool, universal vice, vertical moving bed, horizontal moving bed, etc. The result expected would be of same strength as that of old friction welding machine. It is very easy and at same time production time is very much reduced. This machine is best suitable for mass production
Delineating the molecular and phenotypic spectrum of the SETD1B-related syndrome
Purpose Pathogenic variants in SETD1B have been associated with a syndromic neurodevelopmental disorder including intellectual disability, language delay, and seizures. To date, clinical features have been described for 11 patients with (likely) pathogenic SETD1B sequence variants. This study aims to further delineate the spectrum of the SETD1B-related syndrome based on characterizing an expanded patient cohort. Methods We perform an in-depth clinical characterization of a cohort of 36 unpublished individuals with SETD1B sequence variants, describing their molecular and phenotypic spectrum. Selected variants were functionally tested using in vitro and genome-wide methylation assays. Results Our data present evidence for a loss-of-function mechanism of SETD1B variants, resulting in a core clinical phenotype of global developmental delay, language delay including regression, intellectual disability, autism and other behavioral issues, and variable epilepsy phenotypes. Developmental delay appeared to precede seizure onset, suggesting SETD1B dysfunction impacts physiological neurodevelopment even in the absence of epileptic activity. Males are significantly overrepresented and more severely affected, and we speculate that sex-linked traits could affect susceptibility to penetrance and the clinical spectrum of SETD1B variants. Conclusion Insights from this extensive cohort will facilitate the counseling regarding the molecular and phenotypic landscape of newly diagnosed patients with the SETD1B-related syndrome.Peer reviewe
Manganese surface segregation in NiMnSb
A quantitative analysis of the surface composition of the Heusler alloy NiMnSb has been undertaken using angle-resolved x-ray photoemission spectroscopy and the surface composition characterized. With sufficient annealing cycles, the stoichiometric surface evolves to a surface that is manganese rich. This indicates that the surface enthalpy is different from the bulk for the Heusler alloy NiMnSb. ©2000 American Institute of Physics
Measurements of the 12C/13C ratio in Planetary Nebulae and implications for stellar evolution
We present the results of a study aimed at determining the 12C/13C ratio in
two samples of planetary nebuale (PNe) by means of mm-wave observations of 12CO
and 13CO. The first group includes six PNe which have been observed in the 3He+
hyperfine transition; the other group consists of 23 nebulae with rich
molecular envelopes. We have determined the isotopic ratio in 14 objects and
the results indicate a range of values between 9 and 23. In particular, three
PNe have ratios well below the value predicted by standard evolutionary models
(about 20), indicating that some extra-mixing process has occurred in these
stars. We briefly discuss the implications of our results for standard and
nonstandard stellar nucleosynthesis.Comment: 8 pages, LaTeX, 1 Postscript figure. to appear in The Primordial
Nuclei and Their Galactic Evolution, eds. N. Prantzos, M. Tosi, R. von
Steiger (Kluwer: Dordrecht
The Effective Particle-Hole Interaction and the Optical Response of Simple Metal Clusters
Following Sham and Rice [L. J. Sham, T. M. Rice, Phys. Rev. 144 (1966) 708]
the correlated motion of particle-hole pairs is studied, starting from the
general two-particle Greens function. In this way we derive a matrix equation
for eigenvalues and wave functions, respectively, of the general type of
collective excitation of a N-particle system. The interplay between excitons
and plasmons is fully described by this new set of equations. As a by-product
we obtain - at least a-posteriori - a justification for the use of the TDLDA
for simple-metal clusters.Comment: RevTeX, 15 pages, 5 figures in uufiles format, 1 figure avaible from
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