ABHISHEK Mishra - Academia.edu (original) (raw)
Papers by ABHISHEK Mishra
Astroparticle Physics, 2012
We present a systematic study of the properties of pure hadronic and hybrid compact stars. The nu... more We present a systematic study of the properties of pure hadronic and hybrid compact stars. The nuclear equation of state (EoS) for β-equilibrated neutron star matter was obtained using density dependent effective nucleon-nucleon interaction which satisfies the constraints from the observed flow data from heavy-ion collisions. The energy density of quark matter is lower than that of this nuclear EoS at higher densities implying the possibility of transition to quark matter inside the core. We solve the Einstein's equations for rotating stars using pure nuclear matter and quark core. The β-equilibrated neutron star matter with a thin crust is able to describe highly massive compact stars but find that the nuclear to quark matter deconfinement transition inside neutron stars causes reduction in their masses. Recent observations of the binary millisecond pulsar J1614-2230 by P. B. Demorest et al. [1] suggest that the masses lie within 1.97±0.04 M ⊙ where M ⊙ is the solar mass. In conformity with recent observations, pure nucleonic EoS determines that the maximum mass of NS rotating with frequency below r-mode instability is ∼1.95 M ⊙ with radius ∼10 kilometers. Although compact stars with quark cores rotating with Kepler's frequency have masses up to ∼2 M ⊙ , but if the maximum frequency is limited by the r-mode instability, the maximum mass ∼1.7 M ⊙ turns out to be lower than the observed mass of 1.97±0.04 M ⊙ , by far the highest yet measured with such certainty, implying exclusion of quark cores for such massive pulsars.
Journal of Cluster Science
Neurotoxicity research, Jan 24, 2017
Parkinson's disease (PD) is the second most familiar, progressive and movement-related neurod... more Parkinson's disease (PD) is the second most familiar, progressive and movement-related neurodegenerative disorder after Alzheimer disease. This study aimed to decipher the role of autophagy in cypermethrin-induced Parkinsonism, an animal model of PD. Indicators of autophagy [expression of beclin 1, autophagy-related protein 12 (Atg 12), unc-51 like autophagy activating kinase 1 (Ulk 1), p62 and lysosome-associated membrane protein 2 (LAMP 2) and conversion of microtubule-associated protein 1A/1B-light chain 3 (LC3) I to II], signalling cascade [phosphorylated (p) 5' adenosine monophosphate-activated protein kinase (p-AMPK), sirtuin 1 (Sirt 1), phosphorylated-mammalian target of rapamycin (p-mTOR), tuberous sclerosis complex 2 (TSC 2), p317Ulk 1 and p757Ulk 1 levels] and lysosome morphology were assessed in control and cypermethrin-treated rat model of PD. Autophagy markers were also measured in cypermethrin-treated neuroblastoma cells in the presence of 3-methyl adenine, a p...
Frontiers in neuroscience, 2017
Motion segmentation is a critical pre-processing step for autonomous robotic systems to facilitat... more Motion segmentation is a critical pre-processing step for autonomous robotic systems to facilitate tracking of moving objects in cluttered environments. Event based sensors are low power analog devices that represent a scene by means of asynchronous information updates of only the dynamic details at high temporal resolution and, hence, require significantly less calculations. However, motion segmentation using spatiotemporal data is a challenging task due to data asynchrony. Prior approaches for object tracking using neuromorphic sensors perform well while the sensor is static or a known model of the object to be followed is available. To address these limitations, in this paper we develop a technique for generalized motion segmentation based on spatial statistics across time frames. First, we create micromotion on the platform to facilitate the separation of static and dynamic elements of a scene, inspired by human saccadic eye movements. Second, we introduce the concept of spike-g...
Global climate is changing rapidly and is accompanied by large-scale fragmentation and destructio... more Global climate is changing rapidly and is accompanied by large-scale fragmentation and destruction of habitats. Since dispersal is the first line of defense for mobile organisms to cope with such adversities in their environment, it is important to understand the causes and consequences of evolution of dispersal. Although dispersal is a complex phenomenon involving multiple dispersal-traits like propensity (tendency to leave the natal patch) and ability (to travel long distances), the relationship between these traits is not always straight-forward, it is not clear whether these traits can evolve simultaneously or not, and how their interactions affect the overall dispersal profile. To investigate these issues, we subjected four large (N~2500) outbred populations of Drosophila melanogaster to artificial selection for increased dispersal, in a setup that mimicked increasing habitat fragmentation over 33 generations. The propensity and ability of the selected populations were signific...
Developmental Biology, 2016
Fig. S1. Expression of Rhodopsins in the Wildtype, hazy-/-, Camta tes2 and 3 lola e76 mutant larv... more Fig. S1. Expression of Rhodopsins in the Wildtype, hazy-/-, Camta tes2 and 3 lola e76 mutant larval and embryonic PRs. (A, B, C) Rh5 and Rh6 expression 4
The Indian veterinary journal
ABSTRACT
In this report, different types of fuzzy models have been developed from linguistic equations mod... more In this report, different types of fuzzy models have been developed from linguistic equations models. Different shapes of membership functions were compared: triangular and trapezoidal membership functions as well as their non-linear modifications were used. ANFIS (adaptive neuro-fuzzy inference system) method for Takagi-Sugeno type models was used and clustering for Singleton fuzzy models. Also the different number of singleton values in singleton fuzzy models and by using fuzzy relations different amount of rules was compared. The data-based approaches are based on data from the Cooking Liquor Analyser CLA 2000. Linguistic equations (LE) work well for this data. For the test data, the performance of the real-valued LE model was the best although a better fitting accuracy with training data was obtained by constructing Takagi-Sugeno (TS) fuzzy models with the ANFIS method. There are also overfitting problems with the TS models. Easy configuration and robustness are the main benefits of the LE models. The fitting performance must be compared to the number of modelling parameters.
IEEE/ACM Transactions on Networking, 2015
Target detection in satellite images requires multilevel processing. One of the important levels ... more Target detection in satellite images requires multilevel processing. One of the important levels of processing is image segmentation. In this, a gray level image is segmented into some limited number of classes. One of these segmentation techniques is clustering. Cluster analysis is the formal study of algorithms and methods for grouping. Most of the K-means class of methods start with
Synthetic Metals, 2015
ABSTRACT In present work, nanocomposite of gold nanoparticles–polyaniline (AuNPs/PANI) produces a... more ABSTRACT In present work, nanocomposite of gold nanoparticles–polyaniline (AuNPs/PANI) produces amplified electrochemical signal as compared to gold nanoparticles–polyindole carboxylic acid (AuNPs/Pin5COOH) modified gold electrode (AuE). Present work also compares gold nanoparticles prepared by using green (extracts of Elettaria cardamomum) and chemical synthesis. The characterization studies of the gold nanoparticles prepared from both methods were performed using dynamic light scattering (DLS) and UV–vis spectroscopy. The surface functionalization of modified electrodes was characterized by cyclic voltammetry (CV) and scanning electron microscopy (SEM). Comparison of signal amplification was performed using cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). Voltammetric approach reveals that gold nanoparticles prepared from chemical synthesis resulted in higher electrochemical signal than gold nanoparticles prepared from green technology. Comparisons between two hybrid nanocomposites can prove to be a new avenue for making best sensing interface for biosensor fabrication.
Brazilian Journal of Anesthesiology (English Edition), 2014
Please cite this article in press as: Srivastava VK, et al. Prophylactic use of pregabalin for pr... more Please cite this article in press as: Srivastava VK, et al. Prophylactic use of pregabalin for prevention of succinylcholineinduced fasciculation and myalgia: a randomized, double-blinded, placebo-controlled study. Rev Bras Anestesiol. 2014.
Journal of Computational Science, 2015
Handbook of Proteomic Methods, 2003
Page 95. Qualitative and Quantitative Proteomic Analyses via Multidimensional Protein Identificat... more Page 95. Qualitative and Quantitative Proteomic Analyses via Multidimensional Protein Identification Technology Michael P. Washburn and David M. Schieltz I. Introduction The integration of multidimensional chromatography and mass ... and 5 g of either ammonium sulfate ...
Bioresource Technology, 2014
The present study is targeted towards development of a three member fungal consortium for effecti... more The present study is targeted towards development of a three member fungal consortium for effective removal of metals [Cr(6+) and Cu(2+)] and dyes [AB and PO] from mixed waste streams. Initial studies using individual fungal strain showed that Aspergillus lentulus was best for Cu(2+) and AB removal, Aspergillus terreus for Cr(6+) removal whereas, Rhizopus oryzae was best for PO removal. Based on the complementary pollutant affinities and positive interactions, a consortium comprising all three strains was developed. Consortium removed 100% Cr(6+) and 81.60% Cu(2+) from metal mixture which was significantly higher than that achieved individually by A. lentulus (Cr(6+): 83.11%; Cu(2+): 67.32%), A. terreus (Cr(6+): 95.57%; Cu(2+): 65.77%) or R. oryzae (Cr(6+): 25.34%; Cu(2+): 30.20%). Further, 98.0% AB and 100.0% PO was removed after 48 h by the consortia. Unlike individual strains, consortium's performance was unaltered irrespective of the complexity of metal-dye mixtures, thereby establishing its superiority.
Journal of Biotechnology, 2014
Tetrahedron, 2010
A concise and convenient synthesis of various partially reduced 6-sec-amino-1, 2, 3, 4, 7, 8-hexa... more A concise and convenient synthesis of various partially reduced 6-sec-amino-1, 2, 3, 4, 7, 8-hexahydro-, 6-sec-amino-1, 2, 7, 8-tetrahydrobenzo [c] phenanthrene-5-carbonitriles, 6-sec-amino-3, 4, 7, 8-tetrahydro-1H-benzo [c] phenanthrene-2-one-5-carbonitrile cycloalkene ...
Journal of Microbiological Methods, 2011
A microplate-based rapid, inexpensive and robust technique is developed by using tetrazolium salt... more A microplate-based rapid, inexpensive and robust technique is developed by using tetrazolium salt 2, 3-bis [2-methyloxy-4-nitro-5-sulfophenyl]-2H-tetrazolium-5-carboxanilide (XTT) and menadione to determine the viability of Mycobacterium tuberculosis, Mycobacterium bovis BCG and Mycobacterium smegmatis bacilli in microplate format. In general, XTT reduction is an extremely slow process which takes almost 24 h to produce a detectable signal. Menadione could drastically induce this reduction to an almost equal extent within a few minutes in a dose dependent manner. The reduction of XTT is directly proportional to the cell concentration in the presence of menadione. The standardized protocol used 200 μM of XTT and 60 μM of menadione in 250 μl of cell suspension grown either in aerobic or anaerobic conditions. The cell suspension of M. bovis BCG and M. tuberculosis were incubated for 40 min before reading the optical density at 470 nm whereas M. smegmatis was incubated for 20 min. Calculated Signal/Noise (S/N) ratios obtained by applying this protocol were 5.4, 6.4 and 9.4 using M. bovis BCG, M. tuberculosis and M. smegmatis respectively. The calculated Z′ factors were N 0.8 for all mycobacterium bacilli indicating the robustness of the XTT Reduction Menadione Assay (XRMA) for rapid screening of inhibitors. The assay protocol was validated by applying 10 standard anti-tubercular agents on M. tuberculosis, M. bovis BCG and M. smegmatis. The Minimum Inhibitory Concentration (MIC) values were found to be similar to reported values from Colony Forming Unit (CFU) and REMA (resazurin microplate assay) assays. Altogether, XRMA is providing a novel anti-tubercular screening protocol which could be useful in high throughput screening programs against different physiological stages of the bacilli.
Journal of Inequalities and Applications, 2013
In this paper, three new estimates for the degree of approximation of a functionf , the conjugate... more In this paper, three new estimates for the degree of approximation of a functionf , the conjugate of a function f belonging to classes Lip α and Lip(ξ , r), r ≥ 1, by E (q) • H summability operator of conjugate series of the Fourier series have been determined. MSC: 42A24; 41A25; 42B05; 42B08 Keywords: trigonometric approximation; Fourier series; conjugate series of Fourier series; Hausdorff matrix summability means (H means); (E, q) means and E (q) • H summability operator; generalized Lipschitz class; generalized Minkowski's inequality Recently Nigam and Sharma have obtained the degree of approximation by the Karmata summability method [] and also by (C, )(E, q) means of its Fourier series [] as follows. Theorem . If a function f is π-periodic, Lebesgue integrable on [, π] and belongs to Lip(ξ (t), r) class, then its degree of approximation by (C, )(E, q) summability means of its
Astroparticle Physics, 2012
We present a systematic study of the properties of pure hadronic and hybrid compact stars. The nu... more We present a systematic study of the properties of pure hadronic and hybrid compact stars. The nuclear equation of state (EoS) for β-equilibrated neutron star matter was obtained using density dependent effective nucleon-nucleon interaction which satisfies the constraints from the observed flow data from heavy-ion collisions. The energy density of quark matter is lower than that of this nuclear EoS at higher densities implying the possibility of transition to quark matter inside the core. We solve the Einstein's equations for rotating stars using pure nuclear matter and quark core. The β-equilibrated neutron star matter with a thin crust is able to describe highly massive compact stars but find that the nuclear to quark matter deconfinement transition inside neutron stars causes reduction in their masses. Recent observations of the binary millisecond pulsar J1614-2230 by P. B. Demorest et al. [1] suggest that the masses lie within 1.97±0.04 M ⊙ where M ⊙ is the solar mass. In conformity with recent observations, pure nucleonic EoS determines that the maximum mass of NS rotating with frequency below r-mode instability is ∼1.95 M ⊙ with radius ∼10 kilometers. Although compact stars with quark cores rotating with Kepler's frequency have masses up to ∼2 M ⊙ , but if the maximum frequency is limited by the r-mode instability, the maximum mass ∼1.7 M ⊙ turns out to be lower than the observed mass of 1.97±0.04 M ⊙ , by far the highest yet measured with such certainty, implying exclusion of quark cores for such massive pulsars.
Journal of Cluster Science
Neurotoxicity research, Jan 24, 2017
Parkinson's disease (PD) is the second most familiar, progressive and movement-related neurod... more Parkinson's disease (PD) is the second most familiar, progressive and movement-related neurodegenerative disorder after Alzheimer disease. This study aimed to decipher the role of autophagy in cypermethrin-induced Parkinsonism, an animal model of PD. Indicators of autophagy [expression of beclin 1, autophagy-related protein 12 (Atg 12), unc-51 like autophagy activating kinase 1 (Ulk 1), p62 and lysosome-associated membrane protein 2 (LAMP 2) and conversion of microtubule-associated protein 1A/1B-light chain 3 (LC3) I to II], signalling cascade [phosphorylated (p) 5' adenosine monophosphate-activated protein kinase (p-AMPK), sirtuin 1 (Sirt 1), phosphorylated-mammalian target of rapamycin (p-mTOR), tuberous sclerosis complex 2 (TSC 2), p317Ulk 1 and p757Ulk 1 levels] and lysosome morphology were assessed in control and cypermethrin-treated rat model of PD. Autophagy markers were also measured in cypermethrin-treated neuroblastoma cells in the presence of 3-methyl adenine, a p...
Frontiers in neuroscience, 2017
Motion segmentation is a critical pre-processing step for autonomous robotic systems to facilitat... more Motion segmentation is a critical pre-processing step for autonomous robotic systems to facilitate tracking of moving objects in cluttered environments. Event based sensors are low power analog devices that represent a scene by means of asynchronous information updates of only the dynamic details at high temporal resolution and, hence, require significantly less calculations. However, motion segmentation using spatiotemporal data is a challenging task due to data asynchrony. Prior approaches for object tracking using neuromorphic sensors perform well while the sensor is static or a known model of the object to be followed is available. To address these limitations, in this paper we develop a technique for generalized motion segmentation based on spatial statistics across time frames. First, we create micromotion on the platform to facilitate the separation of static and dynamic elements of a scene, inspired by human saccadic eye movements. Second, we introduce the concept of spike-g...
Global climate is changing rapidly and is accompanied by large-scale fragmentation and destructio... more Global climate is changing rapidly and is accompanied by large-scale fragmentation and destruction of habitats. Since dispersal is the first line of defense for mobile organisms to cope with such adversities in their environment, it is important to understand the causes and consequences of evolution of dispersal. Although dispersal is a complex phenomenon involving multiple dispersal-traits like propensity (tendency to leave the natal patch) and ability (to travel long distances), the relationship between these traits is not always straight-forward, it is not clear whether these traits can evolve simultaneously or not, and how their interactions affect the overall dispersal profile. To investigate these issues, we subjected four large (N~2500) outbred populations of Drosophila melanogaster to artificial selection for increased dispersal, in a setup that mimicked increasing habitat fragmentation over 33 generations. The propensity and ability of the selected populations were signific...
Developmental Biology, 2016
Fig. S1. Expression of Rhodopsins in the Wildtype, hazy-/-, Camta tes2 and 3 lola e76 mutant larv... more Fig. S1. Expression of Rhodopsins in the Wildtype, hazy-/-, Camta tes2 and 3 lola e76 mutant larval and embryonic PRs. (A, B, C) Rh5 and Rh6 expression 4
The Indian veterinary journal
ABSTRACT
In this report, different types of fuzzy models have been developed from linguistic equations mod... more In this report, different types of fuzzy models have been developed from linguistic equations models. Different shapes of membership functions were compared: triangular and trapezoidal membership functions as well as their non-linear modifications were used. ANFIS (adaptive neuro-fuzzy inference system) method for Takagi-Sugeno type models was used and clustering for Singleton fuzzy models. Also the different number of singleton values in singleton fuzzy models and by using fuzzy relations different amount of rules was compared. The data-based approaches are based on data from the Cooking Liquor Analyser CLA 2000. Linguistic equations (LE) work well for this data. For the test data, the performance of the real-valued LE model was the best although a better fitting accuracy with training data was obtained by constructing Takagi-Sugeno (TS) fuzzy models with the ANFIS method. There are also overfitting problems with the TS models. Easy configuration and robustness are the main benefits of the LE models. The fitting performance must be compared to the number of modelling parameters.
IEEE/ACM Transactions on Networking, 2015
Target detection in satellite images requires multilevel processing. One of the important levels ... more Target detection in satellite images requires multilevel processing. One of the important levels of processing is image segmentation. In this, a gray level image is segmented into some limited number of classes. One of these segmentation techniques is clustering. Cluster analysis is the formal study of algorithms and methods for grouping. Most of the K-means class of methods start with
Synthetic Metals, 2015
ABSTRACT In present work, nanocomposite of gold nanoparticles–polyaniline (AuNPs/PANI) produces a... more ABSTRACT In present work, nanocomposite of gold nanoparticles–polyaniline (AuNPs/PANI) produces amplified electrochemical signal as compared to gold nanoparticles–polyindole carboxylic acid (AuNPs/Pin5COOH) modified gold electrode (AuE). Present work also compares gold nanoparticles prepared by using green (extracts of Elettaria cardamomum) and chemical synthesis. The characterization studies of the gold nanoparticles prepared from both methods were performed using dynamic light scattering (DLS) and UV–vis spectroscopy. The surface functionalization of modified electrodes was characterized by cyclic voltammetry (CV) and scanning electron microscopy (SEM). Comparison of signal amplification was performed using cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). Voltammetric approach reveals that gold nanoparticles prepared from chemical synthesis resulted in higher electrochemical signal than gold nanoparticles prepared from green technology. Comparisons between two hybrid nanocomposites can prove to be a new avenue for making best sensing interface for biosensor fabrication.
Brazilian Journal of Anesthesiology (English Edition), 2014
Please cite this article in press as: Srivastava VK, et al. Prophylactic use of pregabalin for pr... more Please cite this article in press as: Srivastava VK, et al. Prophylactic use of pregabalin for prevention of succinylcholineinduced fasciculation and myalgia: a randomized, double-blinded, placebo-controlled study. Rev Bras Anestesiol. 2014.
Journal of Computational Science, 2015
Handbook of Proteomic Methods, 2003
Page 95. Qualitative and Quantitative Proteomic Analyses via Multidimensional Protein Identificat... more Page 95. Qualitative and Quantitative Proteomic Analyses via Multidimensional Protein Identification Technology Michael P. Washburn and David M. Schieltz I. Introduction The integration of multidimensional chromatography and mass ... and 5 g of either ammonium sulfate ...
Bioresource Technology, 2014
The present study is targeted towards development of a three member fungal consortium for effecti... more The present study is targeted towards development of a three member fungal consortium for effective removal of metals [Cr(6+) and Cu(2+)] and dyes [AB and PO] from mixed waste streams. Initial studies using individual fungal strain showed that Aspergillus lentulus was best for Cu(2+) and AB removal, Aspergillus terreus for Cr(6+) removal whereas, Rhizopus oryzae was best for PO removal. Based on the complementary pollutant affinities and positive interactions, a consortium comprising all three strains was developed. Consortium removed 100% Cr(6+) and 81.60% Cu(2+) from metal mixture which was significantly higher than that achieved individually by A. lentulus (Cr(6+): 83.11%; Cu(2+): 67.32%), A. terreus (Cr(6+): 95.57%; Cu(2+): 65.77%) or R. oryzae (Cr(6+): 25.34%; Cu(2+): 30.20%). Further, 98.0% AB and 100.0% PO was removed after 48 h by the consortia. Unlike individual strains, consortium's performance was unaltered irrespective of the complexity of metal-dye mixtures, thereby establishing its superiority.
Journal of Biotechnology, 2014
Tetrahedron, 2010
A concise and convenient synthesis of various partially reduced 6-sec-amino-1, 2, 3, 4, 7, 8-hexa... more A concise and convenient synthesis of various partially reduced 6-sec-amino-1, 2, 3, 4, 7, 8-hexahydro-, 6-sec-amino-1, 2, 7, 8-tetrahydrobenzo [c] phenanthrene-5-carbonitriles, 6-sec-amino-3, 4, 7, 8-tetrahydro-1H-benzo [c] phenanthrene-2-one-5-carbonitrile cycloalkene ...
Journal of Microbiological Methods, 2011
A microplate-based rapid, inexpensive and robust technique is developed by using tetrazolium salt... more A microplate-based rapid, inexpensive and robust technique is developed by using tetrazolium salt 2, 3-bis [2-methyloxy-4-nitro-5-sulfophenyl]-2H-tetrazolium-5-carboxanilide (XTT) and menadione to determine the viability of Mycobacterium tuberculosis, Mycobacterium bovis BCG and Mycobacterium smegmatis bacilli in microplate format. In general, XTT reduction is an extremely slow process which takes almost 24 h to produce a detectable signal. Menadione could drastically induce this reduction to an almost equal extent within a few minutes in a dose dependent manner. The reduction of XTT is directly proportional to the cell concentration in the presence of menadione. The standardized protocol used 200 μM of XTT and 60 μM of menadione in 250 μl of cell suspension grown either in aerobic or anaerobic conditions. The cell suspension of M. bovis BCG and M. tuberculosis were incubated for 40 min before reading the optical density at 470 nm whereas M. smegmatis was incubated for 20 min. Calculated Signal/Noise (S/N) ratios obtained by applying this protocol were 5.4, 6.4 and 9.4 using M. bovis BCG, M. tuberculosis and M. smegmatis respectively. The calculated Z′ factors were N 0.8 for all mycobacterium bacilli indicating the robustness of the XTT Reduction Menadione Assay (XRMA) for rapid screening of inhibitors. The assay protocol was validated by applying 10 standard anti-tubercular agents on M. tuberculosis, M. bovis BCG and M. smegmatis. The Minimum Inhibitory Concentration (MIC) values were found to be similar to reported values from Colony Forming Unit (CFU) and REMA (resazurin microplate assay) assays. Altogether, XRMA is providing a novel anti-tubercular screening protocol which could be useful in high throughput screening programs against different physiological stages of the bacilli.
Journal of Inequalities and Applications, 2013
In this paper, three new estimates for the degree of approximation of a functionf , the conjugate... more In this paper, three new estimates for the degree of approximation of a functionf , the conjugate of a function f belonging to classes Lip α and Lip(ξ , r), r ≥ 1, by E (q) • H summability operator of conjugate series of the Fourier series have been determined. MSC: 42A24; 41A25; 42B05; 42B08 Keywords: trigonometric approximation; Fourier series; conjugate series of Fourier series; Hausdorff matrix summability means (H means); (E, q) means and E (q) • H summability operator; generalized Lipschitz class; generalized Minkowski's inequality Recently Nigam and Sharma have obtained the degree of approximation by the Karmata summability method [] and also by (C, )(E, q) means of its Fourier series [] as follows. Theorem . If a function f is π-periodic, Lebesgue integrable on [, π] and belongs to Lip(ξ (t), r) class, then its degree of approximation by (C, )(E, q) summability means of its