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Search Results: 1 - 10 of 2293 matches for " Kar Manoj "
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Role of free reactive iron in psoriasis
Ghosh Arpita,Mukhopadhyay Soma,Kar Manoj
Indian Journal of Dermatology, Venereology and Leprology , 2008,
Abstract:
Role of Infrared Spectroscopy in Coal Analysis—An Investigation  [PDF]
Manoj Balachandran
American Journal of Analytical Chemistry (AJAC) , 2014, DOI: 10.4236/ajac.2014.56044
Abstract: Fourier transform infrared (FT-IR) spectroscopy is a widely used analytical technique for determining the different functional groups of a coal structure. This method, being able to reveal carbo-hydrogenated structures (aromatic and aliphatic) and heteroatomic functions (mainly oxygenated), as well as to detect the presence of minerals, is currently one of the most powerful techniques for coal characterization and thus is of paramount importance in the various utilization procedures of coal (industrial combustion, coke production processes, etc.). FT-IR study shows the presence of aliphatic -CH, -CH2 and -CH3 groups, aliphatic C-O-C stretching associated with -OH and -NH stretching vibrations and HCC rocking. It is conjectured that, the two-stage leaching using HNO3 followed by HF remarkably reduced the ash content as well as the minerals including Al, Si and Ca. The solubilization of samples with buffered EDTA could not eliminate the minerals in coal. The silicate and kaolinite bands showed a systematic lowering on EDTA and carboxylic acid treatment. The fungal leaching was most beneficial for aromatic molecules with different degrees of substitution. The intensity of bands due to carbonyl groups was increased, when treated with fungi, whereas that due to oxygen functional groups showed a reverse trend. The mineral bands due to silicates also decreased in intensity, on post treatment with fungal culture.
Changing Wisdom of Metallic Alloys Development  [PDF]
Manoj Gupta
Materials Sciences and Applications (MSA) , 2018, DOI: 10.4236/msa.2018.913074
Abstract: Metallic alloys have been instrumental through the ages in shaping the progress of human civilization. The development of the alloys from ancient to present time initiated from accidents to through the use of well-defined scientific principles. This article provides a snapshot of the alloys development from ancient to present time and the likely future direction.
Identification of RAPD and SCAR markers associated with yield traits in the Indian tropical tasar silkworm Antheraea mylitta drury
Dutta, Suhrid R.;Kar, Prasanta K.;Srivastava, Ashok K.;Sinha, Manoj K.;Shankar, Jai;Ghosh, Ananta K.;
Genetics and Molecular Biology , 2012, DOI: 10.1590/S1415-47572012005000059
Abstract: the tropical tasar silkworm, antheraea mylitta, is a semi-domesticated vanya silk-producing insect of high economic importance. to date, no molecular marker associated with cocoon and shell weights has been identified in this species. in this report, we identified a randomly amplified polymorphic dna (rapd) marker and examined its inheritance, and also developed a stable diagnostic sequence-characterized amplified region (scar) marker. silkworms were divided into groups with high (hcsw) and low (lcsw) cocoon and shell weights, and the f2 progeny of a cross between these two groups were obtained. dna from these silkworms was screened by pcr using 34 random primers and the resulting rapd fragments were used for cluster analysis and discriminant function analysis (dfa). the clustering pattern in a upgma-based dendogram and dfa clearly distinguished the hcsw and lcsw groups. multiple regression analysis identified five markers associated with cocoon and shell weights. the marker opw16905 bp showed the most significant association with cocoon and shell weights, and its inheritance was confirmed in f2 progeny. cloning and sequencing of this 905 bp fragment showed 88% identity between its 134 nucleotides and the bmc-1/yamato-like retroposon of a. mylitta. this marker was further converted into a diagnostic scar marker (scopw 16826 bp). the scar marker developed here may be useful in identifying the right parental stock of tasar silkworms for high cocoon and shell weights in breeding programs designed to enhance the productivity of tasar silk.
New experimental constraints: implications for pe-trogenesis of charnockite of dioritic composition  [PDF]
Rajib Kar, Samarendra Bhattacharya
Natural Science (NS) , 2010, DOI: 10.4236/ns.2010.210135
Abstract: Hornblende-dehydration melting experiments at high temperatures (> 950oC) indicate change of melt composition from tonalite/granodiorite to quartz-diorite; clinopyroxene instead of hornbl- ende as the residual phase and change in melting reaction from peritectic hornblende-dehydr- ation to eutectic clinopyroxene-orthopyroxene- plagioclase. In the light of these experimental results, petrogenesis of a charnockite pluton of homogeneous dioritic composition in the Eastern Ghats Belt, India, can be explained as melting at high-temperatures (> 950oC). Negative Sr and Eu anomalies further indicate plagioclase as a major residual phase, consistent with melt- ing at high-temperatures (> 950oC).
LMI Approach to Suboptimal Guaranteed Cost Control for 2-D Discrete Uncertain Systems  [PDF]
Amit Dhawan, Haranath Kar
Journal of Signal and Information Processing (JSIP) , 2011, DOI: 10.4236/jsip.2011.24042
Abstract: This paper studies the problem of the guaranteed cost control via static-state feedback controllers for a class of two-dimensional (2-D) discrete systems described by the Fornasini-Marchesini second local state-space (FMSLSS) model with norm bounded uncertainties. A convex optimization problem with linear matrix inequality (LMI) constraints is formulated to design the suboptimal guaranteed cost controller which ensures the quadratic stability of the closed-loop system and minimizes the associated closed-loop cost function. Application of the proposed controller design method is illustrated with the help of one example.
Studies on Interrelations among SO2, NO2 and PM10 Concentrations and Their Predictions in Ambient Air in Kolkata  [PDF]
Sayanti Kar, Phalguni Mukherjee
Open Journal of Air Pollution (OJAP) , 2012, DOI: 10.4236/ojap.2012.12006
Abstract: In this paper we have first of all studied the interrelations among the concentrations of SO2, NO2 and PM10 and then predicted their future level of concentrations in the ambient air of Kolkata. The data collected from West Bengal Pollution Control Board website have been used to construct second degree, third degree and four degree polynomial equations using MATLAB software. Since a curve in a small interval can be approximated by a line segment in that small interval, we have observed that better result can be achieved if we replace the curves piece meal wise in small intervals by line segments during January-April, May-August and September-December months. The multiple regression equations among the aforesaid three parameters have been established to predict the value of each parameter in terms of the remaining two. A further improvement in terms of reducing the number of dependent variables has been made using the results of correlation coefficients. Finally, we have predicted the value of each parameter in terms of only one dependent variable.
Nonlinear Response of Multi-Segmented Photodetectors Used for Measurements of Microcantilever Motion over Large Dynamic Ranges  [PDF]
Asit Kar, Michael George
Journal of Sensor Technology (JST) , 2012, DOI: 10.4236/jst.2012.24027
Abstract: The use of multi-segmented Position Sensitive Photodiodes (PSD) to measure microcantilever deflections have been found to produce nonlinear signal output, especially when the dynamic range is large. The reflected beam of the microcantilever may undergo intensity and shape modifications prior to reaching the PSD. In a multi-microcantilever sensor system the variation in the size of the individual spots plays an additional role contributing to the nonlinearities of detector output. Irrespective of the range of operation the merits of intensity normalization have been discussed. We show that the output is proportional to the width of the spot along the split line of the detector. This enables the determination of the shape of a spot. We show that the microcantilever vibrational spectrum can be obtained just using a single segment photodetector instead of using multiple segmented PSDs. These concepts will greatly facilitate interpretation of sensor data acquired from either single or multi-microcantilever experimental platforms.
Nitrogen and Boron Doped Diamond Like Carbon Thin Films Synthesis by Electrodeposition from Organic Liquids and Their Characterization  [PDF]
Sunita Kundoo, Satyajit Kar
Advances in Materials Physics and Chemistry (AMPC) , 2013, DOI: 10.4236/ampc.2013.31005
Abstract:

Thin films of amorphous diamond like carbon (a:DLC) were deposited by using a novel technique. By electrodeposition from methanol-camphor solution thin a:DLC films were deposited on non-conductive glass substrates and also on high resistive Si substrates, by using a fine wire mesh electrode, at atmospheric pressure and temperature below 350 K. Thin films of a:DLC were doped by incorporation of nitrogen (a:N-DLC) and boron (a:B-DLC) using urea and boric acid with methanol-camphor solution respectively during the electrodeposition process. From transmittance measurements in the UV-VIS-NIR region, the optical energy band gap of about 1.0 eV for undoped a:DLC film, 2.12 eV for a:N-DLC and 2.0 eV for a:B-DLC films were determined. The spectra showed high transparency in the visible and NIR region. Fourier transform infrared spectroscopy (FTIR) measurements showed the appearance of various C-H and C-C bonding in the spectrum of undoped amorphous DLC film and confirmed C-N and C=N bond formation in a:N-DLC film. From the temperature variation of d.c. conductivity studies, the activation energies were determined and found to be 0.75 eV, 0.32 eV and 0.58 eV for undoped a:DLC films, a:N-DLC and a:B-DLC films respectively. Electrical resistivity at room temperature was reduced by the doping effect, from 109 Ω-cm for undoped films to 107 Ω-cm for nitrogen doped films and 108 Ω-cm for boron doped films.

Generational Differences in Motivation at Work in Slovakian Small and Medium Sized Companies  [PDF]
Peter Karácsony
Open Journal of Social Sciences (JSS) , 2019, DOI: 10.4236/jss.2019.73015
Abstract:
Society’s aging trend will have an impact on the labor market. Today, more than 50% of the labor market is made up of members of Generation X and the Baby Boomer generation. According to some estimates, the number of young people on the labor market will continue to decline. This trend will lead to an increase in demand for young workers, and companies will be competing for them. For this reason, it is crucial for companies to develop a good motivational strategy. The differences between generations are growing, so more and more gaps can be observed between older and younger employees. For companies, it is challenging to create a working environment that can equally meet the needs of different generations. The purpose of my study was to understand and explain the differences in motivational tools used in the workplace between the generations in small and medium sized companies in Slovakia. In my study, I will investigate which motivational tools most influence the generations in the workplace. In my opinion, this will help managers to decide to motivate the different generations to work more effectively.
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