UMESH KUMAR - Academia.edu (original) (raw)
Talks by UMESH KUMAR
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Umesh Kumar , 2021
AS5040 asst Programming code software
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Papers by UMESH KUMAR
2010 35th IEEE Photovoltaic Specialists Conference, 2010
Metallization is a critical processing step in Silicon solar cell manufacturing. Typically, cells... more Metallization is a critical processing step in Silicon solar cell manufacturing. Typically, cells are metalized by a rapid thermal cycle in an IR belt furnace. For proper yield, it is critical to maintain the wafer thermal profile within tight tolerances. In this paper, a user friendly profiling unit, namely, e-Clipse is introduced. The thermal profile of the wafer is measured with K-type thermocouples at four locations. The frame design allows the thermocouples to make intimate contact with the wafer without any bonding material. For profiling, the e-Clipse and the SunKIC datalogger are sent through the furnace to record the thermoelectric response. The recorded data is analyzed for key properties such as peak temperature, heating and cooling rates.
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International Journal of Finance
Purpose: Tax reforms have a significant impact on asset prices and shareholders’ wealth. The Tax ... more Purpose: Tax reforms have a significant impact on asset prices and shareholders’ wealth. The Tax Cuts and Jobs Act 2017 (TCJA) reduces the tax obligations for both households and businesses. This paper investigates the relationship between closed-end funds performance and investor sentiment induced by tax reforms. Methodology: Two proxies of investor sentiment are used to measure the impact on closed-end fund (CEF) performance. Results: The results reveal that overall, tax reforms have a positive effect on the closed-end fund valuations. Institutional investors’ sentiment takes a differential view from individual investors on CEF returns. Institutional investors’ sentiment does not show a relationship with fund returns. Medium size CEFs benefit more from tax reforms. Unique Contribution to Theory, Policy and Practice: Despite mixed signals, the results suggest that TCJA has influenced the investors’ sentiment resulting in excessive optimism.
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In the petrochemical industry, many processes are carried out using fixed bed reactors with concu... more In the petrochemical industry, many processes are carried out using fixed bed reactors with concurrent upward or downward gas and liquid flows. Random and structured packing are used in process columns to enhance the heat and mass transfer between two phases. The packing used in such columns is meant to obtain a high specific interfacial area. In order to characterize the liquid and gas flow distribution through a mock-up column, data on planar and volume density distribution is very useful. This information can be obtained by employing Gamma-ray tomography or Process Tomography (PT). PT makes use of advanced computational procedure on directly measured data indicating the gamma rays transmitted through a planer section of the column in multiple angular orientations. In this paper a quantitative evaluation of porosity and liquid retention has been carried out in a 600mm diameter cold flow catalytic (Al2O3) fixed bed column using the PT technique. The experimental setup consists of a...
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Heliyon, 2021
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International Journal of Computer Applications, 2015
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Diabetes is a group of chronic diseases characterized by high levels of blood glucose due to alte... more Diabetes is a group of chronic diseases characterized by high levels of blood glucose due to alterations in insulin production or insulin action or both. In this, we investigated pharmaceutical marketing of Pioglitazone and its combinations used for Diabetes Mellitus in Moradabad and Bareilly Districts of UP. For investigation, we made two questionnaires, and distributed questionnaire (Appendix 1) to physicians and another questioner to medical store in charge. On the basis of physician opinion on the Diabetes (type 2), we resulted with 46.48% diabetes patients of total OPD patients out of which 89.01% patients are new type 2 patients. There are 12, 12 and 11 brands in Pioglitazone, Pioglitazone with Metformin and Pioglitazone, Metformin & Glimepride categories, respectively. The sale of Piosys, Gluconorm-P and Gluconorm-PG brands of the pioglitazone only, pioglitazone & metformin and pioglitazone, metformin & glimepride, respective categories, were highest in the area of interest.
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Biomaterials science, 2013
Nanoparticles used in biological applications encounter a complex mixture of extracellular protei... more Nanoparticles used in biological applications encounter a complex mixture of extracellular proteins. Adsorption of these proteins on the nanoparticle surface results in the formation of a "protein corona," which can dominate the interaction of the nanoparticle with the cellular environment. The goal of this research was to determine how nanoparticle composition and surface modification affect the cellular binding of protein-nanoparticle complexes. We examined the cellular binding of a collection of commonly used anionic nanoparticles: quantum dots, colloidal gold nanoparticles, and low-density lipoprotein particles, in the presence and absence of extracellular proteins. These experiments have the advantage of comparing different nanoparticles under identical conditions. Using a combination of fluorescence and dark field microscopy, flow cytometry, and spectroscopy, we find that cellular binding of these anionic nanoparticles is inhibited by serum proteins independent of na...
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International Journal of Ecology, 2013
National parks and protected areas require periodic monitoring because of changing land cover typ... more National parks and protected areas require periodic monitoring because of changing land cover types and variability of landscape contexts within and adjacent to their boundaries. In this study, remote sensing and GIS techniques were used to analyse the changes in the vegetation density particularly in the zones of higher anthropogenic pressure in the Similipal Biosphere Reserve (SBR) of Odisha (India), using Landsat imagery from 1975 to 2005. A technique for the detection of postclassification changes was followed and the change in vegetation density as expressed by normalized difference vegetation index was computed. Results indicate that high dense forest in the core zone has been conserved and the highest reforestation has also occurred in this zone of SBR. The results also reveal that anthropological interventions are more in the less dense forest areas and along the roads, whereas high dense forest areas have remained undisturbed and rejuvenated. This study provides baseline da...
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2006 IEEE International Conference on Communications, 2006
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IOSR journal of VLSI and Signal Processing, 2012
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Review of Scientific Instruments, 1999
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Journal of Physics: Conference Series, 2012
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Journal of Physics: Conference Series, 2012
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International Journal of Refrigeration, 2011
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International Journal of Mechanical Engineering Education, 2006
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IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 1996
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Gut, 1995
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Bookmarks Related papers MentionsView impact
Umesh Kumar , 2021
AS5040 asst Programming code software
Bookmarks Related papers MentionsView impact
2010 35th IEEE Photovoltaic Specialists Conference, 2010
Metallization is a critical processing step in Silicon solar cell manufacturing. Typically, cells... more Metallization is a critical processing step in Silicon solar cell manufacturing. Typically, cells are metalized by a rapid thermal cycle in an IR belt furnace. For proper yield, it is critical to maintain the wafer thermal profile within tight tolerances. In this paper, a user friendly profiling unit, namely, e-Clipse is introduced. The thermal profile of the wafer is measured with K-type thermocouples at four locations. The frame design allows the thermocouples to make intimate contact with the wafer without any bonding material. For profiling, the e-Clipse and the SunKIC datalogger are sent through the furnace to record the thermoelectric response. The recorded data is analyzed for key properties such as peak temperature, heating and cooling rates.
Bookmarks Related papers MentionsView impact
International Journal of Finance
Purpose: Tax reforms have a significant impact on asset prices and shareholders’ wealth. The Tax ... more Purpose: Tax reforms have a significant impact on asset prices and shareholders’ wealth. The Tax Cuts and Jobs Act 2017 (TCJA) reduces the tax obligations for both households and businesses. This paper investigates the relationship between closed-end funds performance and investor sentiment induced by tax reforms. Methodology: Two proxies of investor sentiment are used to measure the impact on closed-end fund (CEF) performance. Results: The results reveal that overall, tax reforms have a positive effect on the closed-end fund valuations. Institutional investors’ sentiment takes a differential view from individual investors on CEF returns. Institutional investors’ sentiment does not show a relationship with fund returns. Medium size CEFs benefit more from tax reforms. Unique Contribution to Theory, Policy and Practice: Despite mixed signals, the results suggest that TCJA has influenced the investors’ sentiment resulting in excessive optimism.
Bookmarks Related papers MentionsView impact
In the petrochemical industry, many processes are carried out using fixed bed reactors with concu... more In the petrochemical industry, many processes are carried out using fixed bed reactors with concurrent upward or downward gas and liquid flows. Random and structured packing are used in process columns to enhance the heat and mass transfer between two phases. The packing used in such columns is meant to obtain a high specific interfacial area. In order to characterize the liquid and gas flow distribution through a mock-up column, data on planar and volume density distribution is very useful. This information can be obtained by employing Gamma-ray tomography or Process Tomography (PT). PT makes use of advanced computational procedure on directly measured data indicating the gamma rays transmitted through a planer section of the column in multiple angular orientations. In this paper a quantitative evaluation of porosity and liquid retention has been carried out in a 600mm diameter cold flow catalytic (Al2O3) fixed bed column using the PT technique. The experimental setup consists of a...
Bookmarks Related papers MentionsView impact
Heliyon, 2021
Bookmarks Related papers MentionsView impact
International Journal of Computer Applications, 2015
Bookmarks Related papers MentionsView impact
Bookmarks Related papers MentionsView impact
Diabetes is a group of chronic diseases characterized by high levels of blood glucose due to alte... more Diabetes is a group of chronic diseases characterized by high levels of blood glucose due to alterations in insulin production or insulin action or both. In this, we investigated pharmaceutical marketing of Pioglitazone and its combinations used for Diabetes Mellitus in Moradabad and Bareilly Districts of UP. For investigation, we made two questionnaires, and distributed questionnaire (Appendix 1) to physicians and another questioner to medical store in charge. On the basis of physician opinion on the Diabetes (type 2), we resulted with 46.48% diabetes patients of total OPD patients out of which 89.01% patients are new type 2 patients. There are 12, 12 and 11 brands in Pioglitazone, Pioglitazone with Metformin and Pioglitazone, Metformin & Glimepride categories, respectively. The sale of Piosys, Gluconorm-P and Gluconorm-PG brands of the pioglitazone only, pioglitazone & metformin and pioglitazone, metformin & glimepride, respective categories, were highest in the area of interest.
Bookmarks Related papers MentionsView impact
Biomaterials science, 2013
Nanoparticles used in biological applications encounter a complex mixture of extracellular protei... more Nanoparticles used in biological applications encounter a complex mixture of extracellular proteins. Adsorption of these proteins on the nanoparticle surface results in the formation of a "protein corona," which can dominate the interaction of the nanoparticle with the cellular environment. The goal of this research was to determine how nanoparticle composition and surface modification affect the cellular binding of protein-nanoparticle complexes. We examined the cellular binding of a collection of commonly used anionic nanoparticles: quantum dots, colloidal gold nanoparticles, and low-density lipoprotein particles, in the presence and absence of extracellular proteins. These experiments have the advantage of comparing different nanoparticles under identical conditions. Using a combination of fluorescence and dark field microscopy, flow cytometry, and spectroscopy, we find that cellular binding of these anionic nanoparticles is inhibited by serum proteins independent of na...
Bookmarks Related papers MentionsView impact
International Journal of Ecology, 2013
National parks and protected areas require periodic monitoring because of changing land cover typ... more National parks and protected areas require periodic monitoring because of changing land cover types and variability of landscape contexts within and adjacent to their boundaries. In this study, remote sensing and GIS techniques were used to analyse the changes in the vegetation density particularly in the zones of higher anthropogenic pressure in the Similipal Biosphere Reserve (SBR) of Odisha (India), using Landsat imagery from 1975 to 2005. A technique for the detection of postclassification changes was followed and the change in vegetation density as expressed by normalized difference vegetation index was computed. Results indicate that high dense forest in the core zone has been conserved and the highest reforestation has also occurred in this zone of SBR. The results also reveal that anthropological interventions are more in the less dense forest areas and along the roads, whereas high dense forest areas have remained undisturbed and rejuvenated. This study provides baseline da...
Bookmarks Related papers MentionsView impact
2006 IEEE International Conference on Communications, 2006
Bookmarks Related papers MentionsView impact
IOSR journal of VLSI and Signal Processing, 2012
Bookmarks Related papers MentionsView impact
Review of Scientific Instruments, 1999
Bookmarks Related papers MentionsView impact
Journal of Physics: Conference Series, 2012
Bookmarks Related papers MentionsView impact
Journal of Physics: Conference Series, 2012
Bookmarks Related papers MentionsView impact
International Journal of Refrigeration, 2011
Bookmarks Related papers MentionsView impact
International Journal of Mechanical Engineering Education, 2006
Bookmarks Related papers MentionsView impact
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 1996
Bookmarks Related papers MentionsView impact
Gut, 1995
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European Journal of Inorganic Chemistry, 2008
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Clinical Cancer Research, 2005
Purpose: We have previously shown the reactivation of some methylation-silenced genes in cancer c... more Purpose: We have previously shown the reactivation of some methylation-silenced genes in cancer cells by (−)-epigallocatechin-3-gallate, the major polyphenol from green tea. To determine whether other polyphenolic compounds have similar activities, we studied the effects of soy isoflavones on DNA methylation. Experimental Design: Enzyme assay was used to determine the inhibitory effect of genistein on DNA methyltransferase activity in nuclear extracts and purified recombinant enzyme. Methylation-specific PCR and quantitative real-time PCR were employed to examine the DNA methylation and gene expression status of retinoic acid receptor β (RARβ), p16INK4a, and O6-methylguanine methyltransferase (MGMT) in KYSE 510 esophageal squamous cell carcinoma cells treated with genistein alone or in combination with trichostatin, sulforaphane, or 2′-deoxy-5-aza-cytidine (5-aza-dCyd). Results: Genistein (2-20 μmol/L) reversed DNA hypermethylation and reactivated RARβ, p16INK4a, and MGMT in KYSE 51...
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