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Search Results: 1 - 10 of 310332 matches for " J. Singh "
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ASTER DEM Based Studies for Geological Investigation around Singhbhum Shear Zone (SSZ) in Jharkhand, India  [PDF]
B. SINGH, J. DOWERAH
Journal of Geographic Information System (JGIS) , 2010, DOI: 10.4236/jgis.2010.21003
Abstract: Singhbhum Shear Zone (SSZ) is a geologically rich belt with structures like faults and folds being the distinctive features. Due to these characteristics this area has been an important centre of studies since past few decades. With the advent of Remote Sensing and GIS, it has been possible to study and interprete geological setting of any area in the laboratory itself without even visiting the field again and again. The present study aims to investigate the geology of the SSZ from ASTER DEM by observing the elevation, as-pect, texture, pattern etc of shaded relief images. This can prove to be an excellent supplementary information database for interpretations along with other data.
Model of Preformed Hole-Pairs in Cuprate Superconductors  [PDF]
R. J. Singh
Journal of Modern Physics (JMP) , 2011, DOI: 10.4236/jmp.2011.28105
Abstract: A model of preformed hole-pairs in cuprate superconductors has been proposed based on some experimental results i.e., 1) electron paramagnetic resonance spectra of quenched superconductors which show very frequently the fragment (CuO)4 broken off from the CuO2 layer in the structure, 2) 41 meV peak observed in neutron diffraction and nuclear magnetic resonance spectra of superconductors, 3) Heisenberg exchange interaction leading to ferromagnetism observed in CuO which is an essential ingredient of all superconductors and some generally accepted conclusions i.e., a) that the order parameter in superconductors has dx2–y2 symmetr and b) coherence length is of the order of 15 - 20 Angstrom. Heisenberg exchange interaction between two (CuO4) plaquettes each containing a lattice hole binds the two holes which are the charge carriers in the cuprate superconductors. It is not very clear whether the hole-pair is in the triplet or singlet state, but the triplet state is supported by the experimental observation of ferromagnetism in the parent material CuO. The proposed hole-pair singlet is different from Zhang-Rice singlet.
Some Important Features of Manganites  [PDF]
R. J. Singh
Journal of Modern Physics (JMP) , 2013, DOI: 10.4236/jmp.2013.42027
Abstract:

Manganites are very complex systems because of interplay among charge, spin, orbital and lattice degrees of freedom. To come closer to the understanding of its nature, we discuss its three important features: 1) correlation between magnetization and electrical resistivity in the same temperature range; 2) detection of chemical constitution and the arrangement of Mn3+ and Mn4+ ions at different hole concentrations; and 3) how electrical current flows through double exchange in manganites. The first feature will be discussed for three-dimensional manganies. The features 2 and 3 are inscrutable in three-dimensional manganites. So they will be discussed for one-dimensional manganites and then generalized. One-dimensional solid has been discussed because it may give a see-through picture of various aspects of manganites. All the discussions will be done through a representative example of La1-xCaxMnO3, because it is the intermediate bandwidth manganite; has been most widely investigated and has the highest magnetoresistance. If two things: 1) magnetization and resistivity as a function of temperature at various magnetic fields; and 2) phase diagrams of other manganites are known, their properties can be understood by the discussion of the three features mentioned above.

Cardiovascular Haemodynamics and Some Biochemical Profiles of Endotoxemic Buffalo Calves on Infusion of HSS, Flunixin Meglumine & Blood  [PDF]
J. P. Singh, D. V. Singh
Journal of Biomedical Science and Engineering (JBiSE) , 2018, DOI: 10.4236/jbise.2018.116011
Abstract: Six apparently healthy male buffalo calves aged between 6 months to one year with body weight range of 70 - 140 Kg were used in the present investigation. One animal was used for pilot trial for this group. Five calves were randomly taken into this group. The Eschrechia coli endotoxin infused i/v @5 mg/kg BW/hr for 3 hours to all the animals caused symptoms of restlessness, respiratory distress, snoring, diarrhea, profuse salivation along with the significant fall in systolic, diastolic, pulse and mean arterial venous pressure, hypoproteinemia at 1, 2 & 3 hour and hypoglycemia at 3rd hour i.e., end of endotoxin infusion. Respiration was increased significantly during endotoxin infusion at 2nd & 3rd hour and even afterwards till the end of the observation period i.e. 7 hrs. The treatment with hypertonic saline solution, flunixin meglumine and blood raised (p < 0.05) the systolic, diastolic, pulse, mean arterial, central venous pressure, plasma total protein, Albumin, Glucose and Creatinine to levels either close to or even higher than the normal pre-infusion levels while hematocrit and hemoglobin increased significantly at 7th hour and at 5th, 6th & 7th hour respectively i.e., till the end of the observation period. There was no significant effect on Central Venous Pressure (CVP) and body temperature as measured from rectum.
Optimization and Formulation of Orodispersible Tablets of Meloxicam
J Singh, R Singh
Tropical Journal of Pharmaceutical Research , 2009,
Abstract: Purpose: The objective of this study was to formulate and optimize an orodispersible formulation of meloxicam using a 22 factorial design for enhanced bioavailability. Methods: The tablets were made by non-aqueous wet granulation using crospovidone and mannitol. A 22 factorial design was used to investigate the amount of crospovidone and taste masking, soothening hydrophilic agent (mannitol), as independent variables, and disintegration time as dependent response. Formulated orodispersible tablets were evaluated for weight variation, friability, disintegration time, drug content, wetting time, water absorption ratio and in vitro drug release. Results: The results show that the presence of a superdisintegrant and mannitol is desirable for orodispersion. All the formulations satisfied the limits of orodispersion with a dispersion time of less than 60 sec. For example, formulation F4 showed a disintegration time of 32.1 sec, crushing strength of 4.93 kg/cm2, drug content of 98.5% and fast drug release rate of 99.5% within 30 min, as compared with the conventional tablet (49.5%) . Conclusion: It is feasible to formulate orodispersible tablets of meloxican with acceptable disintegration time, rapid drug release and good hardness, which could be amenable to replication on an industrial scale.
Management of eyelid lymphoma
Singh J,Singh K
Indian Journal of Ophthalmology , 1984,
Abstract:
Job Satisfaction of Employees Undergoing Public Sector Reform in Fiji  [PDF]
Gurmeet Singh, Neale J. Slack
Theoretical Economics Letters (TEL) , 2016, DOI: 10.4236/tel.2016.62035
Abstract: This study analyses job satisfaction in the Maritime Safety Authority of Fiji (MSAF), a public sector entity undergoing reform. Results of this study determine that the level of MSAF employee job satisfaction by dimension was predominantly low; employees had a low level of intrinsic satisfaction, an average level of extrinsic satisfaction, and a low level of general satisfaction; and employees’ level of job satisfaction was significantly lower than the reference group. This research makes its theoretical contribution primarily to the literature on public service job satisfaction, and to the scarce theoretical strands relating to public service safety organisations. A practical outcome of this research is its contribution towards ongoing public sector reforms in Fiji in general and MSAF and the maritime industry in particular.
Viscous dissipation and chemical reaction effects on flow past a stretching porous surface in a porous medium
J. Singh
Advances in Theoretical and Applied Mechanics , 2012,
Abstract:
International Network for the Availability of Scientific Publications - INASP
Singh J
Indian Journal of Pharmacology , 2005,
Abstract:
Cut-off value for PSA: Do we need a change?
Singh J
Journal of Postgraduate Medicine , 2009,
Abstract:
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