1,888 research outputs found
Heat capacity and magnetoresistance in Dy(Co,Si)2 compounds
Magnetocaloric effect and magnetoresistance have been studied in
Dy(Co1-xSix)2 [x=0, 0.075 and 0.15] compounds. Magnetocaloric effect has been
calculated in terms of adiabatic temperatue change (Delta Tad) as well as
isothermal magnetic entropy change (Delta SM) using the heat capacity data. The
maximum values of DeltaSM and DeltaTad for DyCo2 are found to be 11.4 JKg-1K-1
and 5.4 K, respectively. Both DSM and DTad decrease with Si concentration,
reaching a value of 5.4 JKg-1K-1 and 3 K, respectively for x=0.15. The maximum
magnetoresistance is found to about 32% in DyCo2, which decreases with increase
in Si. These variations are explained on the basis of itinerant electron
metamagnetism occurring in these compounds.Comment: Total 8 pages of text and figure
Heat capacity and magnetocaloric effect in polycrystalline Gd1-xSmxMn2Si2
We report the magnetocaloric effect in terms of isothermal magnetic entropy
change as well as adiabatic temperature change, calculated using the heat
capacity data. Using the zero field heat capacity data, the magnetic
contribution to the heat capacity has been estimated. The variations in the
magnetocaloric behavior have been explained on the basis of the magnetic
structure of these compounds. The refrigerant capacities have also been
calculated for these compounds
Multiple magnetic transitions and magnetocaloric effect in Gd1-xSmxMn2Ge2 compounds
Magnetic and magnetocaloric properties of polycrystalline samples of
Gd1-xSmxMn2Ge2 have been studied. All the compounds except GdMn2Ge2 show
re-entrant ferromagnetic behavior. Multiple magnetic transitions observed in
these compounds are explained on the basis of the temperature dependences of
the exchange strengths of the rare earth and Mn sublattices. Magnetocaloric
effect is found to be positive at the re-entrant ferromagnetic transition,
whereas it is negative at the antiferro-ferromagnetic transition. In SmMn2Ge2,
the magnetic entropy change associated with the re-entrant transition is found
to decrease with field, which is attributed to the admixture effect of the
crystal field levels. The isothermal magnetic entropy change is found to
decrease with increase in Sm concentration.Comment:
Role of Hyperspectral imaging for Precision Agriculture Monitoring
In the modern era precision agriculture has started emerging as a new revolution. Remote sensing is generally regarded as one of the most important techniques for agricultural monitoring at multiple spatiotemporal scales. This has expanded from traditional systems such as imaging systems, agricultural monitoring, atmospheric science, geology and defense to a variety of newly developing laboratory-based measurements. The development of hyperspectral imaging systems has taken precision agriculture a step further. Because of the spectral range limit of multispectral imagery, the detection of minute changes in materials is significantly lacking, this shortcoming can be overcome by hyperspectral sensors and prove useful in many agricultural applications. Recently, various emerging platforms also popularized hyperspectral remote sensing technology, however, it comes with the complexity of data storage and processing. This article provides a detailed overview of hyperspectral remote sensing that can be used for better estimation in agricultural applications
Analysing Amino Acids in Galanin Graph Theoretical Approach
Graph theoretical analysis is an important area of the research in biological networks. Here first we introduce Pt-graph of peptide/protein based on physicochemical properties and adjacency of amino acids in the corresponding peptide/protein. Based on the Pt-graph, we introduce the graph of species which containing the peptide/protein named as SPt-graph. Finally, we analyze graph theoretically Pt-graphs of fourteen species of animals containing Galanin, a neuropeptide and their SPt-graph. From the graph theoretical analyses of Pt-graph and SPt-graph we get some observations about the relations among the amino acids, physicochemical properties of amino acids, peptide/protein and species containing peptide/protein and it may help in the field of evolution of peptide/protein and drug design in future
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