Kamal Kumar - Academia.edu (original) (raw)
Papers by Kamal Kumar
F ish are often an important ingredient in the diet of people who live in the proximity of water ... more F ish are often an important ingredient in the diet of people who live in the proximity of water bodies. People have traditionally depended on various varieties of indigenous fish species, easily available from nearby water bodies, as a source of nutrition. Daniels (2002) indicates that of 750 species of freshwater fish species found in India, a large number of them are familiar only to the local population. These species are better known to the rural population due to the importance they attach to these species as a vital and affordable source of nutrition. This is not only the case in India but also in other countries in Asia such as Laos, Cambodia, Viet Nam and China (Halwart & Bartley 2005).
DESIDOC Journal of Library & Information Technology, 2014
Embedded librarianship is an old concept in new context. It is an old phenomenon to initiate a ne... more Embedded librarianship is an old concept in new context. It is an old phenomenon to initiate a new range of services in the present environment. This paper defines the attributes of embedded library services such as user-oriented, no physical proximity required, miniature group centric, expertise, etc. It also endows with suggestions to the future embedded librarians which embrace acting as a group and not as an individual, support from the organisation and associates, commercial outlook, risk taking competence, etc. This paper also explains the practicing embedded librarianship process which starts with the identification of a faculty member who is library-friendly and ends with providing with embedded library services in the hi-tech era. It is a transformation process of traditional librarian to embedded librarian. As compared to traditional librarianship which is based on transaction, embedded librarianship is based on relationship with the faculty, or user community. When an em...
![Research paper thumbnail of Investigations on Peri-, Regio- and Stereoselectivities in Thermal Cycloadditions Involving C -(4-Oxo-4 H [1]benzopyran-3-yl)- N -phenylnitrones: Role of Steric Factors and Secondary Interactions in 1,3-Dipolar Cycloadditions](https://attachments.academia-assets.com/93932963/thumbnails/1.jpg)
](Tetrahedron, 2000
ÐComplete peri-, regio-and stereoselectivities in thermal reactions of C-(4-oxo-4H[1]benzopyran-3... more ÐComplete peri-, regio-and stereoselectivities in thermal reactions of C-(4-oxo-4H[1]benzopyran-3-yl)-N-phenylnitrones with both electron-rich and electron-de®cient ole®ns have been investigated. This conjugated nitrone undergoes frontier-orbital (LUMO-dipole HOMO-dipolarophile) controlled exo-selecitve 1,3-dipolar cycloadditions; the stereo-chemical outcome is in¯uenced predominantly by steric factors, besides secondary orbital and/or polar interactions.
New Botanist International Journal of Plant Science Research, 2006
An experiment comprising 75 F IS + 28 parents was conducted in Randomized Block Design in three r... more An experiment comprising 75 F IS + 28 parents was conducted in Randomized Block Design in three replications under irrigated condition during Kharif 2001 and 2002. The observations were recorded on grain yield plant−1 (g), seedling length (cm), number of leaves planrl, days to 50% flowering, plant height (cm), tillers plant−1, ear bearing tillers plant−1, spikelets plant−1, gains panicle−1, spikelet fertility per cent, test weight (g), biological yield (g) and harvest index. Phenotypic and genotypic coefficient of variation were higher for grain yield plant−1, spikelet fertility per cent, spikelets plant−1, ear bearing tillers plant−1, test weight and tillers plant−1. High heritability estimates in broad sense were obtained for most of the characters except seedling length and plant height, while narrow, sense heritability estimates were higher for test weight and moderate for rest of the characters except seedling length, number of leaves, spikelets panicle−1, biological yield and grain yield plant−1, which exhibited low heritability. High heritability coupled with high genetic advance were recorded for test weight, spikelet fertility per cent, grain yield plant−1, harvest index, biological yield and number of spikelets plant−1.
Current Advances in Agricultural Sciences, 2014
A field experiment was conducted during kharif 2010 at Faizabad (Uttar Pradesh) to assessthe effe... more A field experiment was conducted during kharif 2010 at Faizabad (Uttar Pradesh) to assessthe effects of moisture regime and integrated nutrient supply on yield, yield attributes and nutrients uptake of transplanted rice (Oryza sativa L.). Irrigation with 7 cm water at 1 day after disappearance of ponded water (DADPW) was superior to 3 and 5 DADPW in respect of yield, yield attributes and nutrient uptake. The highest grain yield (5.44 t ha−1) and straw yield (7.68 t ha−1), was recorded with 1 DADPW. Application of recommended dose of NPK (120:60:40 kg ha−1) applied through inorganic fertilizers was at par with green manuring + 75% NPK through inorganic fertilizers in respect of yield attributes, yield and total nutrient uptake. The maximum grain yield (5.21 t ha−1) and straw yield (7.45 t ha−1) was obtained with 100% NPK (120:60:40 kg ha−1), which was at par with green manuring + 75% NPK applied through inorganic fertilizers.
49th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition, 2011
Autoignition delay experiments for the isomers of butanol, including n-, sec-, tert-, and iso-but... more Autoignition delay experiments for the isomers of butanol, including n-, sec-, tert-, and iso-butanol, have been performed using a heated rapid compression machine. For a compressed pressure of 15 bar, the compressed temperatures have been varied in the range of 725-855 K for all the stoichiometric fuel/oxidizer mixtures. Over the conditions investigated in this study, the ignition delay decreases monotonically as temperature increases and exhibits single-stage characteristics. Experimental ignition delays are also compared to simulations computed using three kinetic mechanisms available in the literature. Reasonable agreement is found for three isomers (tert-, iso-, and n-butanol).
![Research paper thumbnail of ChemInform Abstract: Facile, Regioselective [4 + 2] Cycloaddition Involving 1-Aryl-4-phenyl-1-azadienes and Allenic Esters: An Efficient Route to Novel Substituted 1-Aryl-4-phenyl-1,4-dihydropyridines](https://attachments.academia-assets.com/93932959/thumbnails/1.jpg)
](ChemInform, 2010
Facile, Regioselective [4 + 2] Cycloaddition Involving 1-Aryl-4phenyl-1-azadienes and Allenic Est... more Facile, Regioselective [4 + 2] Cycloaddition Involving 1-Aryl-4phenyl-1-azadienes and Allenic Esters: An Efficient Route to Novel Substituted 1-Aryl-4-phenyl-1,4-dihydropyridines.-An efficient route to novel substituted 1-aryl-4-phenyl-1,4-dihydropyridines is presented. The substrates, when stirred in dry benzene at room temperature, form considerable amounts of azetidines (IV) in addition to the desired (III). The former undergo reorganization on SiO 2 to give cyclohexenones (V).-(ISHAR, M.
Spectrochimica Acta Part A: Molecular Spectroscopy, 1990
The isotropic Raman band of the C=O stretching mode of the N,N-dimethylformamide (DMF) molecule h... more The isotropic Raman band of the C=O stretching mode of the N,N-dimethylformamide (DMF) molecule has been studied as a function of solvents' hydrodynamic properties. The effect of solvent viscosity on linewidth (r,,,,) has been studied in detail, particularly using the theory of microviscosity. Modifications have been made in the f(p, q. n) parameter which relates the vibrational relaxation rate with viscosity, density and dispersion energy on the basis of microviscosity.
![Research paper thumbnail of Tandem reorganisation of 1,3-dipolar cycloadducts of C-(4-oxo-4H[1]benzopyran-3-yl)-N-phenylnitrone and allenic esters, leading to novel functionalized benzo[b]indolizines](https://attachments.academia-assets.com/93932953/thumbnails/1.jpg)
](Tetrahedron Letters, 1999
C-(4-oxo-4H[1]benzopyran-3-yl)-N-phanylnitrone (1) adds regiospecifically to the C2-C3 x-bond of ... more C-(4-oxo-4H[1]benzopyran-3-yl)-N-phanylnitrone (1) adds regiospecifically to the C2-C3 x-bond of allenic esters (2ae) and the 1,3-dipolar cycioadducts formed undergo a series of intramolecular reorganisations including an intramolecular (4+2) cycloadditiun, in situ, to yield novel functionalized benzo[blindolizines (3a-e), in good yields.
Sensors and Actuators A: Physical, 2013
Silicon (Si)-nanopolyaniline (PAni) conducting platform has been electrochemically developed for ... more Silicon (Si)-nanopolyaniline (PAni) conducting platform has been electrochemically developed for the sensitive sensing of ammonia. The nano PAni films are formed through the assembly of nano granules of the polymer. The average height of the film is in the range of 50 nm. The electrical conductivity of the Si-PAni is influenced in the presence of ammonia. The response of this conductometric sensor is almost linear within 5-50 ppm of ammonia. The response and the recovery times are observed to be 10 and 60 s, respectively for 10 ppm of ammonia. The response time of the sensor for other concentrations (viz. 20, 30, 40, 50 and 60 ppm ammonia) is also in the range of 10 ± 2 s. However, the recovery of the sensor takes slightly longer time (70 ± 3 s) in case of higher concentrations (≥40 ppm) of ammonia.
Proceedings of the Combustion Institute, 2013
The analysis and interpretation of the combustion chemistry is greatly simplified by using simple... more The analysis and interpretation of the combustion chemistry is greatly simplified by using simple mixtures of pure components, referred to as surrogates, in lieu of fully-blended transportation fuels, such as gasoline. Recognizing that the ability to model autoignition chemistry is critical to understanding the operation of Homogeneous Charged Compression Ignition engines, this work is an attempt to experimentally and computationally assess the autoignition responses of research grade gasoline and two of its proposed surrogates reported in the literature using a rapid compression machine (RCM), for the low-to-intermediate temperature range and at high pressures. The first surrogate studied is a three-component mixture of iso-octane, n-heptane, and toluene. The second is a four-component mixture that includes an olefin (2-pentene), in addition to the ones noted above. Ignition delay times of stoichiometric mixtures, for gasoline and the two surrogates in air, are measured using an RCM for pressures of 20 and 40 bar, and in the temperature range of 650-900 K. The four-component surrogate is found to emulate the ignition delay times of gasoline more closely when compared to the three-component surrogate. Additionally, the experimental data are compared against the computed results from a recently developed surrogate model for gasoline combustion. A good agreement between the experimental and computed results is observed, while discrepancies are also identified and discussed.
Journal of Raman Spectroscopy, 1991
JOURNAL OF RAMAN SPECTROSCOPY, VOL. 22, 721-723 (1991) SHORT COMMUNlCATiON ... N,N=Dime t h y lac... more JOURNAL OF RAMAN SPECTROSCOPY, VOL. 22, 721-723 (1991) SHORT COMMUNlCATiON ... N,N=Dime t h y lace t amide ... Anusree Purkayastha and Kamal Kumar* Department of Physics, North-Eastem Hill University, Shillong-793 003, India ... Vibrational relaxation ...
Journal of Raman Spectroscopy, 1999
Raman bandshape and vibrational relaxation are rele-vant to understanding in detail the soluteso... more Raman bandshape and vibrational relaxation are rele-vant to understanding in detail the solutesolvent system especially at the microscopic level. The dependence of the bandwidth and wavenumber of Raman vibrational bands on the environment provides useful ...
The Journal of Organic Chemistry, 2002
Asian Journal of Development Matters, 2010
... No industrial development, no commercial growth, no stable political structure is possible fo... more ... No industrial development, no commercial growth, no stable political structure is possible for her unless her shores are protected.5 This was also ... IK Gujral, said that the “Government of India's policy with regard to bases in Indian Ocean has been one of strong opposition.”22 ...
Journal of Medicinal Chemistry, 2012
■ ABBREVIATIONS USED NP, natural product; PCA, principal component analysis; SCONP, structural cl... more ■ ABBREVIATIONS USED NP, natural product; PCA, principal component analysis; SCONP, structural classification of natural products; DOS, diversity oriented synthesis; BIOS, biology oriented synthesis; MptpB, Mycobacterium protein tyrosine phosphatase B;
International Journal of Mineral Processing, 1980
... PROCESS FOR SEPARATION OF SILICA FROM SILICEOUS MAGNESIAN LIMESTONES VN VISWANATHAN, DV RAMAN... more ... PROCESS FOR SEPARATION OF SILICA FROM SILICEOUS MAGNESIAN LIMESTONES VN VISWANATHAN, DV RAMANA RAO and KAMAL KUMAR Cement ... type have been found in Andhra Pradesh, Gujarat, Orissa, Karnataka and other states of India (Krish naswamy, 1972 ...
F ish are often an important ingredient in the diet of people who live in the proximity of water ... more F ish are often an important ingredient in the diet of people who live in the proximity of water bodies. People have traditionally depended on various varieties of indigenous fish species, easily available from nearby water bodies, as a source of nutrition. Daniels (2002) indicates that of 750 species of freshwater fish species found in India, a large number of them are familiar only to the local population. These species are better known to the rural population due to the importance they attach to these species as a vital and affordable source of nutrition. This is not only the case in India but also in other countries in Asia such as Laos, Cambodia, Viet Nam and China (Halwart & Bartley 2005).
DESIDOC Journal of Library & Information Technology, 2014
Embedded librarianship is an old concept in new context. It is an old phenomenon to initiate a ne... more Embedded librarianship is an old concept in new context. It is an old phenomenon to initiate a new range of services in the present environment. This paper defines the attributes of embedded library services such as user-oriented, no physical proximity required, miniature group centric, expertise, etc. It also endows with suggestions to the future embedded librarians which embrace acting as a group and not as an individual, support from the organisation and associates, commercial outlook, risk taking competence, etc. This paper also explains the practicing embedded librarianship process which starts with the identification of a faculty member who is library-friendly and ends with providing with embedded library services in the hi-tech era. It is a transformation process of traditional librarian to embedded librarian. As compared to traditional librarianship which is based on transaction, embedded librarianship is based on relationship with the faculty, or user community. When an em...
Tetrahedron, 2000
ÐComplete peri-, regio-and stereoselectivities in thermal reactions of C-(4-oxo-4H[1]benzopyran-3... more ÐComplete peri-, regio-and stereoselectivities in thermal reactions of C-(4-oxo-4H[1]benzopyran-3-yl)-N-phenylnitrones with both electron-rich and electron-de®cient ole®ns have been investigated. This conjugated nitrone undergoes frontier-orbital (LUMO-dipole HOMO-dipolarophile) controlled exo-selecitve 1,3-dipolar cycloadditions; the stereo-chemical outcome is in¯uenced predominantly by steric factors, besides secondary orbital and/or polar interactions.
New Botanist International Journal of Plant Science Research, 2006
An experiment comprising 75 F IS + 28 parents was conducted in Randomized Block Design in three r... more An experiment comprising 75 F IS + 28 parents was conducted in Randomized Block Design in three replications under irrigated condition during Kharif 2001 and 2002. The observations were recorded on grain yield plant−1 (g), seedling length (cm), number of leaves planrl, days to 50% flowering, plant height (cm), tillers plant−1, ear bearing tillers plant−1, spikelets plant−1, gains panicle−1, spikelet fertility per cent, test weight (g), biological yield (g) and harvest index. Phenotypic and genotypic coefficient of variation were higher for grain yield plant−1, spikelet fertility per cent, spikelets plant−1, ear bearing tillers plant−1, test weight and tillers plant−1. High heritability estimates in broad sense were obtained for most of the characters except seedling length and plant height, while narrow, sense heritability estimates were higher for test weight and moderate for rest of the characters except seedling length, number of leaves, spikelets panicle−1, biological yield and grain yield plant−1, which exhibited low heritability. High heritability coupled with high genetic advance were recorded for test weight, spikelet fertility per cent, grain yield plant−1, harvest index, biological yield and number of spikelets plant−1.
Current Advances in Agricultural Sciences, 2014
A field experiment was conducted during kharif 2010 at Faizabad (Uttar Pradesh) to assessthe effe... more A field experiment was conducted during kharif 2010 at Faizabad (Uttar Pradesh) to assessthe effects of moisture regime and integrated nutrient supply on yield, yield attributes and nutrients uptake of transplanted rice (Oryza sativa L.). Irrigation with 7 cm water at 1 day after disappearance of ponded water (DADPW) was superior to 3 and 5 DADPW in respect of yield, yield attributes and nutrient uptake. The highest grain yield (5.44 t ha−1) and straw yield (7.68 t ha−1), was recorded with 1 DADPW. Application of recommended dose of NPK (120:60:40 kg ha−1) applied through inorganic fertilizers was at par with green manuring + 75% NPK through inorganic fertilizers in respect of yield attributes, yield and total nutrient uptake. The maximum grain yield (5.21 t ha−1) and straw yield (7.45 t ha−1) was obtained with 100% NPK (120:60:40 kg ha−1), which was at par with green manuring + 75% NPK applied through inorganic fertilizers.
49th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition, 2011
Autoignition delay experiments for the isomers of butanol, including n-, sec-, tert-, and iso-but... more Autoignition delay experiments for the isomers of butanol, including n-, sec-, tert-, and iso-butanol, have been performed using a heated rapid compression machine. For a compressed pressure of 15 bar, the compressed temperatures have been varied in the range of 725-855 K for all the stoichiometric fuel/oxidizer mixtures. Over the conditions investigated in this study, the ignition delay decreases monotonically as temperature increases and exhibits single-stage characteristics. Experimental ignition delays are also compared to simulations computed using three kinetic mechanisms available in the literature. Reasonable agreement is found for three isomers (tert-, iso-, and n-butanol).
ChemInform, 2010
Facile, Regioselective [4 + 2] Cycloaddition Involving 1-Aryl-4phenyl-1-azadienes and Allenic Est... more Facile, Regioselective [4 + 2] Cycloaddition Involving 1-Aryl-4phenyl-1-azadienes and Allenic Esters: An Efficient Route to Novel Substituted 1-Aryl-4-phenyl-1,4-dihydropyridines.-An efficient route to novel substituted 1-aryl-4-phenyl-1,4-dihydropyridines is presented. The substrates, when stirred in dry benzene at room temperature, form considerable amounts of azetidines (IV) in addition to the desired (III). The former undergo reorganization on SiO 2 to give cyclohexenones (V).-(ISHAR, M.
Spectrochimica Acta Part A: Molecular Spectroscopy, 1990
The isotropic Raman band of the C=O stretching mode of the N,N-dimethylformamide (DMF) molecule h... more The isotropic Raman band of the C=O stretching mode of the N,N-dimethylformamide (DMF) molecule has been studied as a function of solvents' hydrodynamic properties. The effect of solvent viscosity on linewidth (r,,,,) has been studied in detail, particularly using the theory of microviscosity. Modifications have been made in the f(p, q. n) parameter which relates the vibrational relaxation rate with viscosity, density and dispersion energy on the basis of microviscosity.
Tetrahedron Letters, 1999
C-(4-oxo-4H[1]benzopyran-3-yl)-N-phanylnitrone (1) adds regiospecifically to the C2-C3 x-bond of ... more C-(4-oxo-4H[1]benzopyran-3-yl)-N-phanylnitrone (1) adds regiospecifically to the C2-C3 x-bond of allenic esters (2ae) and the 1,3-dipolar cycioadducts formed undergo a series of intramolecular reorganisations including an intramolecular (4+2) cycloadditiun, in situ, to yield novel functionalized benzo[blindolizines (3a-e), in good yields.
Sensors and Actuators A: Physical, 2013
Silicon (Si)-nanopolyaniline (PAni) conducting platform has been electrochemically developed for ... more Silicon (Si)-nanopolyaniline (PAni) conducting platform has been electrochemically developed for the sensitive sensing of ammonia. The nano PAni films are formed through the assembly of nano granules of the polymer. The average height of the film is in the range of 50 nm. The electrical conductivity of the Si-PAni is influenced in the presence of ammonia. The response of this conductometric sensor is almost linear within 5-50 ppm of ammonia. The response and the recovery times are observed to be 10 and 60 s, respectively for 10 ppm of ammonia. The response time of the sensor for other concentrations (viz. 20, 30, 40, 50 and 60 ppm ammonia) is also in the range of 10 ± 2 s. However, the recovery of the sensor takes slightly longer time (70 ± 3 s) in case of higher concentrations (≥40 ppm) of ammonia.
Proceedings of the Combustion Institute, 2013
The analysis and interpretation of the combustion chemistry is greatly simplified by using simple... more The analysis and interpretation of the combustion chemistry is greatly simplified by using simple mixtures of pure components, referred to as surrogates, in lieu of fully-blended transportation fuels, such as gasoline. Recognizing that the ability to model autoignition chemistry is critical to understanding the operation of Homogeneous Charged Compression Ignition engines, this work is an attempt to experimentally and computationally assess the autoignition responses of research grade gasoline and two of its proposed surrogates reported in the literature using a rapid compression machine (RCM), for the low-to-intermediate temperature range and at high pressures. The first surrogate studied is a three-component mixture of iso-octane, n-heptane, and toluene. The second is a four-component mixture that includes an olefin (2-pentene), in addition to the ones noted above. Ignition delay times of stoichiometric mixtures, for gasoline and the two surrogates in air, are measured using an RCM for pressures of 20 and 40 bar, and in the temperature range of 650-900 K. The four-component surrogate is found to emulate the ignition delay times of gasoline more closely when compared to the three-component surrogate. Additionally, the experimental data are compared against the computed results from a recently developed surrogate model for gasoline combustion. A good agreement between the experimental and computed results is observed, while discrepancies are also identified and discussed.
Journal of Raman Spectroscopy, 1991
JOURNAL OF RAMAN SPECTROSCOPY, VOL. 22, 721-723 (1991) SHORT COMMUNlCATiON ... N,N=Dime t h y lac... more JOURNAL OF RAMAN SPECTROSCOPY, VOL. 22, 721-723 (1991) SHORT COMMUNlCATiON ... N,N=Dime t h y lace t amide ... Anusree Purkayastha and Kamal Kumar* Department of Physics, North-Eastem Hill University, Shillong-793 003, India ... Vibrational relaxation ...
Journal of Raman Spectroscopy, 1999
Raman bandshape and vibrational relaxation are rele-vant to understanding in detail the soluteso... more Raman bandshape and vibrational relaxation are rele-vant to understanding in detail the solutesolvent system especially at the microscopic level. The dependence of the bandwidth and wavenumber of Raman vibrational bands on the environment provides useful ...
The Journal of Organic Chemistry, 2002
Asian Journal of Development Matters, 2010
... No industrial development, no commercial growth, no stable political structure is possible fo... more ... No industrial development, no commercial growth, no stable political structure is possible for her unless her shores are protected.5 This was also ... IK Gujral, said that the “Government of India's policy with regard to bases in Indian Ocean has been one of strong opposition.”22 ...
Journal of Medicinal Chemistry, 2012
■ ABBREVIATIONS USED NP, natural product; PCA, principal component analysis; SCONP, structural cl... more ■ ABBREVIATIONS USED NP, natural product; PCA, principal component analysis; SCONP, structural classification of natural products; DOS, diversity oriented synthesis; BIOS, biology oriented synthesis; MptpB, Mycobacterium protein tyrosine phosphatase B;
International Journal of Mineral Processing, 1980
... PROCESS FOR SEPARATION OF SILICA FROM SILICEOUS MAGNESIAN LIMESTONES VN VISWANATHAN, DV RAMAN... more ... PROCESS FOR SEPARATION OF SILICA FROM SILICEOUS MAGNESIAN LIMESTONES VN VISWANATHAN, DV RAMANA RAO and KAMAL KUMAR Cement ... type have been found in Andhra Pradesh, Gujarat, Orissa, Karnataka and other states of India (Krish naswamy, 1972 ...