Ram Maurya - Academia.edu (original) (raw)

Papers by Ram Maurya

arXiv (Cornell University), Mar 15, 2012

Solar energetic transients occurring in solar atmosphere are associated with catastrophic release... more Solar energetic transients occurring in solar atmosphere are associated with catastrophic release of energy in the solar corona. These transients inject a part of their energy by various physical processes to the deeper, denser photospheric layer at which velocity and magnetic fields are measured using suitable spectral lines. Serious questions have been raised about the nature of the observed magnetic (and velocity) field changes associated with energetic transients as their measurements are expected to be affected by flare-induced line profile changes. In this paper, we shall discuss some recent progress on our understanding of the physical processes associated with such events.

Advanced Synthesis & Catalysis, 2020

Journal of Hill Agriculture, 2013

An experiment was conducted at Muraul farm of Tirhut College of Agriculture, Dholi, Muzaffarpur, ... more An experiment was conducted at Muraul farm of Tirhut College of Agriculture, Dholi, Muzaffarpur, (Rajendra Agricultural University, Pusa, Bihar), during Kharif season of 2010–11 and 2011–12 to find out suitable fertilizer doses of nitrogen, potash and sulphur for kharif onion variety Agrifound dark red under calcareous soil of North Bihar. In the present investigation maximum plant height (59.55 cm) and no. of leaves/plant (10.64) were recorded with highest level of nitrogen i.e., 150 kg/ha, while maximum marketable yield (265.54 q/ha) and total yield (272.89 q/ha) was recorded with 125 kg N/ha. In case of potash maximum plant height (56.06 cm), no of leaves/plant (9.46), marketable yield (230.87 q/ha) and total yield (238.73 q/ha) were recorded with application of 100 kg/ha. Sulphur also showed the maximum plant height (55.52 cm), no. of leaves/plant (9.59), marketable yield (234.49 q/ha) and total yield 242.69 q/ha with highest level of 40 kg/ha. Among various fertilizer combinations the maximum plant height (62.76 cm), no. of leaves per plant (12.60), marketable yield (295.11 q/ha) and total yield 298.72 q/ha were recorded with treatment combination 125 kg nitrogen + 80 kg phosphorus + 100 kg potash + 40 kg sulphur per hectare.

Gyankosh the Journal of Library and Information Management, 2012

The electronics information resources have become of the important part of digital era library. E... more The electronics information resources have become of the important part of digital era library. Electronic information resources are necessary in the contemporary environment of rapid technology change. This paper focuses on use of the electronic information resources in the library of Krishna Girls Engineering College (KGEC), Library by the students, faculty and students members for their study, research, teaching, project and consultancy purposes. In this paper examines the interest of the users about using of internet, electronic information, electronic journals, relevant information, and issue/return services provided by the library. It is also discusses frequency of their visit to the library and tools used for searching the information. A survey was conducted, using questionnaire, to collect the data wherein this case study exhibits sex wise distribution of users, longevity of using the internet, awareness about e-information resources and e-journals from internet. It will remove the ignorance of traditional users. Questionnaire was administered to the entire library users.

Journal of Hill Agriculture, 2013

A laboratory experiment was conducted to observe the effect of Juglans regia L. leaf extracts on ... more A laboratory experiment was conducted to observe the effect of Juglans regia L. leaf extracts on germination and subsequent seedling growth of wheat (cv.VL-907) and barley (cv.PRB-502) under West Himalayan agri-silvi system. Eleven treatments comprised of distilled water (Control =0%), 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90% and 100% concentration of leaf extracts were employed. The effect of aqueous extracts was found inhibitive indicating a direct proportional relationship with concentration dependent manner on seed germination and subsequent seedling growth of wheat. Invariably there was a decrease in root, shoot as well as seedling length, fresh and dry weight of seedling and vigour index I and II with increasing walnut leaf extracts concentration on wheat. However, barley seed showed a considerable resistance against walnut leaf extract and no significant reduction and trends was observed for seed germination and subsequent seedling growth i.e. fresh and dry weight, vigour index I and II for different concentration of leaf extracts.

We examine the characteristic properties of photospheric p-modes and sub-photospheric flows of ac... more We examine the characteristic properties of photospheric p-modes and sub-photospheric flows of active regions (ARs) observed during the period of 26-31 October 2003. Using ring diagram analysis of Doppler velocity data obtained from the Global Oscillations Network Group (GONG), we have found that p-mode parameters evolve with ARs and show a strong association with flare activity. Sub-photospheric flows, derived using inversions of p-modes, show strong twist at the locations of ARs, and large variation with flare activity.

Advances in Experimental Medicine and Biology

Cells and tissues function in context. Under a given growth or survival medium they perform tasks... more Cells and tissues function in context. Under a given growth or survival medium they perform tasks, replicate and die. Given a stimulus they respond by invoking myriad biomolecular networks that result in a specified cellular outcome. At any given instant it can be argued that the cell is in a "state" defined by its components--their concentrations and locations, the interactions between components--that are modulated in space and time, and the complex circuitry--that involves a large number of interacting networks and a snapshot of the dynamical processes--such as gene expression, cell cycle, transport of components, etc. At present, we can measure, using high and low throughput methods, several cellular components in a context-dependent manner and obtain a partial picture of cellular networks and dynamical processes. Are these measurements sufficient to answer important biological questions and help reconstruct a systems-level understanding of a mammalian cell? This chapter will address systems biology strategies developed to address this question and demonstrate the power of integration of diverse cellular data for answering interesting biological questions in macrophages. We will use this systems biology approach to address the following questions: (1) How good are macrophage cell lines in addressing phenotypic biology of primary macrophages? (2) How do signals associated with inflammatory molecules regulate gene transcription in macrophages? (3) How can we combine proteomic and other cellular measurements to characterize the repertoire of upstream signaling networks invoked by macrophages? (4) How do designed knockdowns of proteins influence cellular phenotypes?

The energetic events, e.g., flares, CMEs, etc. release large amount of energy, which may be able ... more The energetic events, e.g., flares, CMEs, etc. release large amount of energy, which may be able to excite acoustic waves (p-mode) by exerting mechanical impulse of the thermal expansion of the flare on the photosphere. This implied that during an energetic flare, energy of p-modes must be weighted by the energy of excited modes. To get the inferences of flare

ChemInform, 2009

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was e... more ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

Transition Metal Chemistry, 1986

Inorg. Chim. Acta, 66, L71(1982). - (17) B. Jezowska-Trzebiatowska, A. Antonov, H. Kozlowski and ... more Inorg. Chim. Acta, 66, L71(1982). - (17) B. Jezowska-Trzebiatowska, A. Antonov, H. Kozlowski and T. Cukierda, Bull. Acad. Pol. Sci., Ser. Sci., Chim., 22, 1087 (1974). - (18)G. Pneumatikakis, Inorg. Chim. Acta, 66, 131 (1982). - 09)j. Fujita, K. Nakamoto and M. ...

Tetrahedron Letters, 2007

Pyrimidine derivatives R 0510 An Efficient Bakers' Yeast Catalyzed Synthesis of 3,4-Dihydropyrimi... more Pyrimidine derivatives R 0510 An Efficient Bakers' Yeast Catalyzed Synthesis of 3,4-Dihydropyrimidin-2-(1H)-ones.-Fermenting bakers' yeast provides a good catalytic medium for the synthesis of various dihydropyrimidine derivatives via Biginelli-type three-component coupling of aldehydes, acetoacetates and urea derivatives. Interestingly, when 2-hydroxybenzaldehyde is used, a tricyclic product (VIII) is obtained instead of the expected dihydropyrimidinone.-(KUMAR*, A.;

Tetrahedron Letters, 2010

A series of 2-arylbenzothiazoles and 2-arylbenzoxazoles were synthesized by the reactions of alde... more A series of 2-arylbenzothiazoles and 2-arylbenzoxazoles were synthesized by the reactions of aldehydes and 2-aminothiophenol and 2-hydroxythiophenol, respectively, using glucose oxidase (GOX)–chloroperoxidase (CPO) catalytic system under oxygen atmosphere.

Synlett, 2008

LETTER, Synlett 2008(6): 883-885 DOI: 10.1055/s-2008-1042908. © Georg Thieme Verlag Stuttgart · N... more LETTER, Synlett 2008(6): 883-885 DOI: 10.1055/s-2008-1042908. © Georg Thieme Verlag Stuttgart · New York. Efficient Synthesis of Hantzsch Esters and Polyhydroquinoline Derivatives in Aqueous Micelles. Atul Kumar*, Ram Awatar Maurya. ...

The Journal of Organic Chemistry, 2013

Journal of Applied Polymer Science, 1998

In continuation of our endeavor to develop synthetic resins of improved properties and performanc... more In continuation of our endeavor to develop synthetic resins of improved properties and performance, we report here the synthesis of mixed copolymer resins by the condensation of resorcinol, aniline, and formaldehyde with ortho-, meta-, and para-phenylenediamine separately. The resins were characterized by infrared (IR) and thermogravimetric analysis (TGA). The mixed copolymer resins were found to have superior thermal stability over conventional phenol–CH2O and resorcinol–CH2O resins. The solubility behavior of the resins showed that they are resistant to common solvents. However, they are soluble in concentrated H2SO4 and HNO3, but insoluble in concentrated HCl. © 1998 John Wiley & Sons, Inc. J Appl Polm Sci 68: 2183–2187, 1998

Computers & Chemical Engineering, 2006

Systematic study of cellular signaling pathways facilitates improved understanding of processes i... more Systematic study of cellular signaling pathways facilitates improved understanding of processes including cell proliferation, metabolism and embryonic development. Key cell signaling pathway characteristics, such as transduction, amplification, feedback, and filtering display striking ...

Biophysical Journal, 2007

Calcium (Ca 21) is an important second messenger and has been the subject of numerous experimenta... more Calcium (Ca 21) is an important second messenger and has been the subject of numerous experimental measurements and mechanistic studies in intracellular signaling. Calcium profile can also serve as a useful cellular phenotype. Kinetic models of calcium dynamics provide quantitative insights into the calcium signaling networks. We report here the development of a complex kinetic model for calcium dynamics in RAW 264.7 cells stimulated by the C5a ligand. The model is developed using the vast number of measurements of in vivo calcium dynamics carried out in the Alliance for Cellular Signaling (AfCS) Laboratories. Ligand binding, phospholipase C-b (PLC-b) activation, inositol 1,4,5-trisphosphate (IP 3) receptor (IP 3 R) dynamics, and calcium exchange with mitochondria and extracellular matrix have all been incorporated into the model. The experimental data include data from both native and knockdown cell lines. Subpopulational variability in measurements is addressed by allowing nonkinetic parameters to vary across datasets. The model predicts temporal response of Ca 21 concentration for various doses of C5a under different initial conditions. The optimized parameters for IP 3 R dynamics are in agreement with the legacy data. Further, the halfmaximal effect concentration of C5a and the predicted dose response are comparable to those seen in AfCS measurements. Sensitivity analysis shows that the model is robust to parametric perturbations.

Bioorganic & Medicinal Chemistry Letters, 2009

Bioorganic & Medicinal Chemistry Letters, 2009

arXiv (Cornell University), Mar 15, 2012

Solar energetic transients occurring in solar atmosphere are associated with catastrophic release... more Solar energetic transients occurring in solar atmosphere are associated with catastrophic release of energy in the solar corona. These transients inject a part of their energy by various physical processes to the deeper, denser photospheric layer at which velocity and magnetic fields are measured using suitable spectral lines. Serious questions have been raised about the nature of the observed magnetic (and velocity) field changes associated with energetic transients as their measurements are expected to be affected by flare-induced line profile changes. In this paper, we shall discuss some recent progress on our understanding of the physical processes associated with such events.

Advanced Synthesis & Catalysis, 2020

Journal of Hill Agriculture, 2013

An experiment was conducted at Muraul farm of Tirhut College of Agriculture, Dholi, Muzaffarpur, ... more An experiment was conducted at Muraul farm of Tirhut College of Agriculture, Dholi, Muzaffarpur, (Rajendra Agricultural University, Pusa, Bihar), during Kharif season of 2010–11 and 2011–12 to find out suitable fertilizer doses of nitrogen, potash and sulphur for kharif onion variety Agrifound dark red under calcareous soil of North Bihar. In the present investigation maximum plant height (59.55 cm) and no. of leaves/plant (10.64) were recorded with highest level of nitrogen i.e., 150 kg/ha, while maximum marketable yield (265.54 q/ha) and total yield (272.89 q/ha) was recorded with 125 kg N/ha. In case of potash maximum plant height (56.06 cm), no of leaves/plant (9.46), marketable yield (230.87 q/ha) and total yield (238.73 q/ha) were recorded with application of 100 kg/ha. Sulphur also showed the maximum plant height (55.52 cm), no. of leaves/plant (9.59), marketable yield (234.49 q/ha) and total yield 242.69 q/ha with highest level of 40 kg/ha. Among various fertilizer combinations the maximum plant height (62.76 cm), no. of leaves per plant (12.60), marketable yield (295.11 q/ha) and total yield 298.72 q/ha were recorded with treatment combination 125 kg nitrogen + 80 kg phosphorus + 100 kg potash + 40 kg sulphur per hectare.

Gyankosh the Journal of Library and Information Management, 2012

The electronics information resources have become of the important part of digital era library. E... more The electronics information resources have become of the important part of digital era library. Electronic information resources are necessary in the contemporary environment of rapid technology change. This paper focuses on use of the electronic information resources in the library of Krishna Girls Engineering College (KGEC), Library by the students, faculty and students members for their study, research, teaching, project and consultancy purposes. In this paper examines the interest of the users about using of internet, electronic information, electronic journals, relevant information, and issue/return services provided by the library. It is also discusses frequency of their visit to the library and tools used for searching the information. A survey was conducted, using questionnaire, to collect the data wherein this case study exhibits sex wise distribution of users, longevity of using the internet, awareness about e-information resources and e-journals from internet. It will remove the ignorance of traditional users. Questionnaire was administered to the entire library users.

Journal of Hill Agriculture, 2013

A laboratory experiment was conducted to observe the effect of Juglans regia L. leaf extracts on ... more A laboratory experiment was conducted to observe the effect of Juglans regia L. leaf extracts on germination and subsequent seedling growth of wheat (cv.VL-907) and barley (cv.PRB-502) under West Himalayan agri-silvi system. Eleven treatments comprised of distilled water (Control =0%), 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90% and 100% concentration of leaf extracts were employed. The effect of aqueous extracts was found inhibitive indicating a direct proportional relationship with concentration dependent manner on seed germination and subsequent seedling growth of wheat. Invariably there was a decrease in root, shoot as well as seedling length, fresh and dry weight of seedling and vigour index I and II with increasing walnut leaf extracts concentration on wheat. However, barley seed showed a considerable resistance against walnut leaf extract and no significant reduction and trends was observed for seed germination and subsequent seedling growth i.e. fresh and dry weight, vigour index I and II for different concentration of leaf extracts.

We examine the characteristic properties of photospheric p-modes and sub-photospheric flows of ac... more We examine the characteristic properties of photospheric p-modes and sub-photospheric flows of active regions (ARs) observed during the period of 26-31 October 2003. Using ring diagram analysis of Doppler velocity data obtained from the Global Oscillations Network Group (GONG), we have found that p-mode parameters evolve with ARs and show a strong association with flare activity. Sub-photospheric flows, derived using inversions of p-modes, show strong twist at the locations of ARs, and large variation with flare activity.

Advances in Experimental Medicine and Biology

Cells and tissues function in context. Under a given growth or survival medium they perform tasks... more Cells and tissues function in context. Under a given growth or survival medium they perform tasks, replicate and die. Given a stimulus they respond by invoking myriad biomolecular networks that result in a specified cellular outcome. At any given instant it can be argued that the cell is in a "state" defined by its components--their concentrations and locations, the interactions between components--that are modulated in space and time, and the complex circuitry--that involves a large number of interacting networks and a snapshot of the dynamical processes--such as gene expression, cell cycle, transport of components, etc. At present, we can measure, using high and low throughput methods, several cellular components in a context-dependent manner and obtain a partial picture of cellular networks and dynamical processes. Are these measurements sufficient to answer important biological questions and help reconstruct a systems-level understanding of a mammalian cell? This chapter will address systems biology strategies developed to address this question and demonstrate the power of integration of diverse cellular data for answering interesting biological questions in macrophages. We will use this systems biology approach to address the following questions: (1) How good are macrophage cell lines in addressing phenotypic biology of primary macrophages? (2) How do signals associated with inflammatory molecules regulate gene transcription in macrophages? (3) How can we combine proteomic and other cellular measurements to characterize the repertoire of upstream signaling networks invoked by macrophages? (4) How do designed knockdowns of proteins influence cellular phenotypes?

The energetic events, e.g., flares, CMEs, etc. release large amount of energy, which may be able ... more The energetic events, e.g., flares, CMEs, etc. release large amount of energy, which may be able to excite acoustic waves (p-mode) by exerting mechanical impulse of the thermal expansion of the flare on the photosphere. This implied that during an energetic flare, energy of p-modes must be weighted by the energy of excited modes. To get the inferences of flare

ChemInform, 2009

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was e... more ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

Transition Metal Chemistry, 1986

Inorg. Chim. Acta, 66, L71(1982). - (17) B. Jezowska-Trzebiatowska, A. Antonov, H. Kozlowski and ... more Inorg. Chim. Acta, 66, L71(1982). - (17) B. Jezowska-Trzebiatowska, A. Antonov, H. Kozlowski and T. Cukierda, Bull. Acad. Pol. Sci., Ser. Sci., Chim., 22, 1087 (1974). - (18)G. Pneumatikakis, Inorg. Chim. Acta, 66, 131 (1982). - 09)j. Fujita, K. Nakamoto and M. ...

Tetrahedron Letters, 2007

Pyrimidine derivatives R 0510 An Efficient Bakers' Yeast Catalyzed Synthesis of 3,4-Dihydropyrimi... more Pyrimidine derivatives R 0510 An Efficient Bakers' Yeast Catalyzed Synthesis of 3,4-Dihydropyrimidin-2-(1H)-ones.-Fermenting bakers' yeast provides a good catalytic medium for the synthesis of various dihydropyrimidine derivatives via Biginelli-type three-component coupling of aldehydes, acetoacetates and urea derivatives. Interestingly, when 2-hydroxybenzaldehyde is used, a tricyclic product (VIII) is obtained instead of the expected dihydropyrimidinone.-(KUMAR*, A.;

Tetrahedron Letters, 2010

A series of 2-arylbenzothiazoles and 2-arylbenzoxazoles were synthesized by the reactions of alde... more A series of 2-arylbenzothiazoles and 2-arylbenzoxazoles were synthesized by the reactions of aldehydes and 2-aminothiophenol and 2-hydroxythiophenol, respectively, using glucose oxidase (GOX)–chloroperoxidase (CPO) catalytic system under oxygen atmosphere.

Synlett, 2008

LETTER, Synlett 2008(6): 883-885 DOI: 10.1055/s-2008-1042908. © Georg Thieme Verlag Stuttgart · N... more LETTER, Synlett 2008(6): 883-885 DOI: 10.1055/s-2008-1042908. © Georg Thieme Verlag Stuttgart · New York. Efficient Synthesis of Hantzsch Esters and Polyhydroquinoline Derivatives in Aqueous Micelles. Atul Kumar*, Ram Awatar Maurya. ...

The Journal of Organic Chemistry, 2013

Journal of Applied Polymer Science, 1998

In continuation of our endeavor to develop synthetic resins of improved properties and performanc... more In continuation of our endeavor to develop synthetic resins of improved properties and performance, we report here the synthesis of mixed copolymer resins by the condensation of resorcinol, aniline, and formaldehyde with ortho-, meta-, and para-phenylenediamine separately. The resins were characterized by infrared (IR) and thermogravimetric analysis (TGA). The mixed copolymer resins were found to have superior thermal stability over conventional phenol–CH2O and resorcinol–CH2O resins. The solubility behavior of the resins showed that they are resistant to common solvents. However, they are soluble in concentrated H2SO4 and HNO3, but insoluble in concentrated HCl. © 1998 John Wiley & Sons, Inc. J Appl Polm Sci 68: 2183–2187, 1998

Computers & Chemical Engineering, 2006

Systematic study of cellular signaling pathways facilitates improved understanding of processes i... more Systematic study of cellular signaling pathways facilitates improved understanding of processes including cell proliferation, metabolism and embryonic development. Key cell signaling pathway characteristics, such as transduction, amplification, feedback, and filtering display striking ...

Biophysical Journal, 2007

Calcium (Ca 21) is an important second messenger and has been the subject of numerous experimenta... more Calcium (Ca 21) is an important second messenger and has been the subject of numerous experimental measurements and mechanistic studies in intracellular signaling. Calcium profile can also serve as a useful cellular phenotype. Kinetic models of calcium dynamics provide quantitative insights into the calcium signaling networks. We report here the development of a complex kinetic model for calcium dynamics in RAW 264.7 cells stimulated by the C5a ligand. The model is developed using the vast number of measurements of in vivo calcium dynamics carried out in the Alliance for Cellular Signaling (AfCS) Laboratories. Ligand binding, phospholipase C-b (PLC-b) activation, inositol 1,4,5-trisphosphate (IP 3) receptor (IP 3 R) dynamics, and calcium exchange with mitochondria and extracellular matrix have all been incorporated into the model. The experimental data include data from both native and knockdown cell lines. Subpopulational variability in measurements is addressed by allowing nonkinetic parameters to vary across datasets. The model predicts temporal response of Ca 21 concentration for various doses of C5a under different initial conditions. The optimized parameters for IP 3 R dynamics are in agreement with the legacy data. Further, the halfmaximal effect concentration of C5a and the predicted dose response are comparable to those seen in AfCS measurements. Sensitivity analysis shows that the model is robust to parametric perturbations.

Bioorganic & Medicinal Chemistry Letters, 2009

Bioorganic & Medicinal Chemistry Letters, 2009