Dr. AMIT P. PRATAP PRATAP | University of Pennsylvania (original) (raw)
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Papers by Dr. AMIT P. PRATAP PRATAP
The 2nd International Electronic Conference on Applied Sciences, 2021
This article is an open access article distributed under the terms and conditions of the Creative... more This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY
The Astrophysical Journal, 1997
We present a comprehensive study of the physical and chemical conditions along the TMC-1 ridge. T... more We present a comprehensive study of the physical and chemical conditions along the TMC-1 ridge. Temperatures were estimated from observations of and CO. Densities were obtained CH 3 CCH, NH 3 , from a multitransition study of The values of the density and temperature allow column densities HC 3 N. for 13 molecular species to be estimated from statistical equilibrium calculations, using observations of rarer isotopomers where possible, to minimize opacity e †ects. The most striking abundance variations relative to HCO`along the ridge were seen for and SO, while smaller variations were HC 3 N, CH 3 CCH, seen in CS, and HCN. On the other hand, the HNC, and abundances relative to C 2 H, NH 3 , N 2 H HCO`were determined to be constant, indicating that the so-called peak in TMC-1 is probably a NH 3 peak in the ammonia column density rather than a relative abundance peak. In contrast, the well-studied cyanopolyyne peak is most likely due to an enhancement in the abundance of long-chain carbon species. Comparisons of the derived abundances to the results of time-dependent chemical models show good overall agreement for chemical timescales around 105 yr. We Ðnd that the observed abundance gradients can be explained either by a small variation in the chemical timescale from 1.2 ] 105 to 1.8 ] 105 yr or by a factor of 2 change in the density along the ridge. Alternatively, a variation in the C/O ratio from 0.4 to 0.5 along the ridge produces an abundance gradient similar to that observed.
Journal of Oleo Science
Introduction Dietary fat is a crucial factor in the regulation of plasma cholesterol level 1. Die... more Introduction Dietary fat is a crucial factor in the regulation of plasma cholesterol level 1. Dietary fat consumption is correlated with Coronary Heart Diseases CHD and stroke mortality. A diet rich in food of plant origin can significantly retard the development of CHD 2. The vegetable oils rich in polyunsaturated fatty acid, mainly linoleic acid 18:2 , supports hypocholestrolemic effect 1. Rice bran, a co-product of milled rice, and its oil have cardiovascular health benefits. Human consumption of rice bran has been limited, primarily because of the rapid onset of rancidity in rice bran, but methods to stabilize rice bran and to extract its oil have been developed. Interest in rice bran grew from the determination that the inclusion of oat bran in the diet lowers the serum cholesterols 3. Rice Bran Oil RBO typically contains 22 of saturated fatty acid SFA , 43 of monounsaturated fatty acid MUFA and 35 polyunsaturated fatty acid PUFA. This composition is extremely close to the American Heart Association AHA and World Health Organization WHO recommendations on edible oils 6. Research showed the deleterious effects of SFA on blood total cholesterol concentrations, and the fact that RBO lowers blood cholesterol is contrary to these findings. Now research suggests
Technology is an international journal covering fundamental and applied aspects of dispersions, e... more Technology is an international journal covering fundamental and applied aspects of dispersions, emulsions, vesicles, microemulsions, liquid crystals, particle suspensions and solgel processes. Fundamental areas that are covered include new surfactants, polymers and indigenous stabilizers; surfactant and polymer association as well as phase equilibria in systems water and oil; surfactant and polymer films, monolayers and interfacial films; adsorption and desorption onto solid surfaces; stability and destabilization of dispersions, emulsions and particle suspensions; collodal templates and sol-gel processing. Industrial applications cover chemicals (surfactants, polymers, stabilizers, inhibitors), crude oils, food, pharmaceuticals, agriculture, nanotechnology, and soft condensed materials. Authors are strongly encouraged to submit manuscripts on disk. The disk should be prepared using MS Word or WordPerfect and should be clearly labeled with the authors' names, file name, and software program. A hardcopy printout that exactly matches the disk must be supplied. Each manuscript must be accompanied by a statement that it has not been published elsewhere and that it has not been submitted simultaneously for publication elsewhere. Authors are responsible for obtaining permission to reproduce copyrighted material from other sources and are required to sign an agreement for the transfer of copyright to the publisher. All accepted manuscripts, artwork, and photographs become the property of the publisher. All parts of the manuscript should be typewritten, double-spaced, with margins of at least one inch on all sides. Number manuscript pages consecutively throughout the paper. Authors should also supply a shortened version of the title suitable for the running head, not exceeding 50 character spaces. Each article should be summarized in an abstract of not more than 100 words. Avoid abbreviations, diagrams, and reference to the text in the abstract. Abstract should include three to five key words that will facilitate indexing and data retrieval purposes. Footnotes Footnotes should be included in the list of references. References
The 2nd International Electronic Conference on Applied Sciences, 2021
This article is an open access article distributed under the terms and conditions of the Creative... more This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY
The Astrophysical Journal, 1997
We present a comprehensive study of the physical and chemical conditions along the TMC-1 ridge. T... more We present a comprehensive study of the physical and chemical conditions along the TMC-1 ridge. Temperatures were estimated from observations of and CO. Densities were obtained CH 3 CCH, NH 3 , from a multitransition study of The values of the density and temperature allow column densities HC 3 N. for 13 molecular species to be estimated from statistical equilibrium calculations, using observations of rarer isotopomers where possible, to minimize opacity e †ects. The most striking abundance variations relative to HCO`along the ridge were seen for and SO, while smaller variations were HC 3 N, CH 3 CCH, seen in CS, and HCN. On the other hand, the HNC, and abundances relative to C 2 H, NH 3 , N 2 H HCO`were determined to be constant, indicating that the so-called peak in TMC-1 is probably a NH 3 peak in the ammonia column density rather than a relative abundance peak. In contrast, the well-studied cyanopolyyne peak is most likely due to an enhancement in the abundance of long-chain carbon species. Comparisons of the derived abundances to the results of time-dependent chemical models show good overall agreement for chemical timescales around 105 yr. We Ðnd that the observed abundance gradients can be explained either by a small variation in the chemical timescale from 1.2 ] 105 to 1.8 ] 105 yr or by a factor of 2 change in the density along the ridge. Alternatively, a variation in the C/O ratio from 0.4 to 0.5 along the ridge produces an abundance gradient similar to that observed.
Journal of Oleo Science
Introduction Dietary fat is a crucial factor in the regulation of plasma cholesterol level 1. Die... more Introduction Dietary fat is a crucial factor in the regulation of plasma cholesterol level 1. Dietary fat consumption is correlated with Coronary Heart Diseases CHD and stroke mortality. A diet rich in food of plant origin can significantly retard the development of CHD 2. The vegetable oils rich in polyunsaturated fatty acid, mainly linoleic acid 18:2 , supports hypocholestrolemic effect 1. Rice bran, a co-product of milled rice, and its oil have cardiovascular health benefits. Human consumption of rice bran has been limited, primarily because of the rapid onset of rancidity in rice bran, but methods to stabilize rice bran and to extract its oil have been developed. Interest in rice bran grew from the determination that the inclusion of oat bran in the diet lowers the serum cholesterols 3. Rice Bran Oil RBO typically contains 22 of saturated fatty acid SFA , 43 of monounsaturated fatty acid MUFA and 35 polyunsaturated fatty acid PUFA. This composition is extremely close to the American Heart Association AHA and World Health Organization WHO recommendations on edible oils 6. Research showed the deleterious effects of SFA on blood total cholesterol concentrations, and the fact that RBO lowers blood cholesterol is contrary to these findings. Now research suggests
Technology is an international journal covering fundamental and applied aspects of dispersions, e... more Technology is an international journal covering fundamental and applied aspects of dispersions, emulsions, vesicles, microemulsions, liquid crystals, particle suspensions and solgel processes. Fundamental areas that are covered include new surfactants, polymers and indigenous stabilizers; surfactant and polymer association as well as phase equilibria in systems water and oil; surfactant and polymer films, monolayers and interfacial films; adsorption and desorption onto solid surfaces; stability and destabilization of dispersions, emulsions and particle suspensions; collodal templates and sol-gel processing. Industrial applications cover chemicals (surfactants, polymers, stabilizers, inhibitors), crude oils, food, pharmaceuticals, agriculture, nanotechnology, and soft condensed materials. Authors are strongly encouraged to submit manuscripts on disk. The disk should be prepared using MS Word or WordPerfect and should be clearly labeled with the authors' names, file name, and software program. A hardcopy printout that exactly matches the disk must be supplied. Each manuscript must be accompanied by a statement that it has not been published elsewhere and that it has not been submitted simultaneously for publication elsewhere. Authors are responsible for obtaining permission to reproduce copyrighted material from other sources and are required to sign an agreement for the transfer of copyright to the publisher. All accepted manuscripts, artwork, and photographs become the property of the publisher. All parts of the manuscript should be typewritten, double-spaced, with margins of at least one inch on all sides. Number manuscript pages consecutively throughout the paper. Authors should also supply a shortened version of the title suitable for the running head, not exceeding 50 character spaces. Each article should be summarized in an abstract of not more than 100 words. Avoid abbreviations, diagrams, and reference to the text in the abstract. Abstract should include three to five key words that will facilitate indexing and data retrieval purposes. Footnotes Footnotes should be included in the list of references. References