Roop kumar - Academia.edu (original) (raw)
Papers by Roop kumar
Journal of Forensic Medicine, 2013
Since pre independence era, Indian railways network across the country has shown a phenomenal dev... more Since pre independence era, Indian railways network across the country has shown a phenomenal development and exerted a strong impact over the transportation and economic development of the country in a positive way. The increase in Population of the country has led to an increase in the railway traffic which in turn has contributed to an increase in unnatural deaths due to railway mishaps. The incidence of deaths due to Railway accidents constitutes a significant group of transportation related morbidities and mortalities amounting to 7.6% [2008] of all the accidental deaths occurring in the country. In the light of the above, the present study was conducted to assess the impact of the railway traffic accidents occurring in the Khammam region of Andhra pradesh. The present study shows that males were predominantly involved in accidental as well as suicidal railway related deaths. Majority of the victims were in the age group of 30–39 yrs and belonged to Hindu religion. The exact identity in few of the cases could not be made out. The incidence of railway accidents was seen to be more during the day time and occurred usually within town limits. Most of the affected persons died on the spot due to the injuries that they sustained.
Journal of Forensic Medicine, 2013
A posterior urethral valve is an obstructing membrane in the posterior part of male urethra leadi... more A posterior urethral valve is an obstructing membrane in the posterior part of male urethra leading to renal failure and death occurring in 1:5000 to 8000 male live births. The incidence of intrauterine deaths related to posterior urethral valve is under reported. The cause for the occurrence is unclear. Posterior Urethral Valve syndrome is a syndrome of obstructive uropathy resulting in hypertrophy of bladder, ureters and dysplasia of the kidneys. Prenatal ultrasonography is a gold standard diagnostic tool. The fetal autopsy conducted over the case presented here demonstrates all the classical findings of the obstructive uropathy (renal dysplasia, hydronephrosis, bladder hypertrophy, hydro ureters). The case reiterates the importance of prenatal ultrasonography and meticulous fetal autopsy to determine the cause of intra uterine fetal death.
Journal of Molecular Structure, Apr 1, 2018
A novel 4-(morpholinomethyl)-5-oxo-1-phenylpyrrolidine-3-carboxylic acid has been synthesized and... more A novel 4-(morpholinomethyl)-5-oxo-1-phenylpyrrolidine-3-carboxylic acid has been synthesized and its structural elucidation has been done by UV, FT-IR, 1 H and 13 C NMR spectroscopy. All quantum chemical calculations were carried out at level of density functional theory (DFT) with B3LYP function using 6-31G (d, p) basis atomic set. AIM approach has been incorporated for the analysis of various intermolecular interactions. Polarizability and hyperpolarizabilities values have been calculated along with the exploration of nonlinear optical properties of the title compound. DFT computed total first static hyperpolarizability (β 0 = 0.2747×10-30 esu) indicates that title molecule could be an area of interest as an attractive future NLO material. For the analysis of thermal behaviour of title molecule, thermodynamic properties such as heat capacity, entropy and enthalpy change at various temperatures have been calculated. The NBO computations were done for the correlation of possible transitions with the electronic transitions. Electrophilic and nucleophilic regions were identified with the help of MESP plot. Determination of energy gap has been done by using HOMO and LUMO energy values, along with the computation of electronegativity and electrophilicity indices.
Trans Tech Publications Ltd. eBooks, Apr 15, 2005
The use of precipitation chemistry to synthesize hydroxyapatite (HA) normally yields nano-crystal... more The use of precipitation chemistry to synthesize hydroxyapatite (HA) normally yields nano-crystals with various morphology and sizes depending on the synthesis conditions (e.g., temperature, concentration, level of agitation, pH, etc.). This study involved the synthesis of HA nano-rods/whiskers by modifying an existing chemical route for HA synthesis. The nano-rods were characterised for their structure and morphology and subsequently sintered. The mechanical properties of the sintered compacts were also assessed.
European Journal of Molecular & Clinical Medicine, Dec 23, 2020
Journal of the Geological Society of India, 2021
An infrequent occurrence of sapphirine from metapelite rocks of the Cardamom hills of South India... more An infrequent occurrence of sapphirine from metapelite rocks of the Cardamom hills of South India has been reported. This report of sapphirine may not be the first from the Southern Granulite Terrane (SGT) but is essentially from a new locality. The studied metapelites are silica-undersaturated devoid of garnet and the sapphirine symplectites. The symplectites of orthopyroxene + cordierite, orthopyroxene + K-feldspar + cordierite, orthopyroxene + sapphirine + cordierite ± K-feldspar ± biotite, orthopyroxene + biotite + cordierite + K-feldspar are discernible. The textural patterns show partial to complete pseudomorphism of the initially formed orthopyroxene and sapphirine and their succeeding decomposition to present stage. The relative XMg calculated for the key minerals show the trend as: Crd > Spr > Bt > Opx. The pseudosection modelling and the calculated P-T diagram drawn from the average bulk composition of the studied metapelite connote isothermal decompression with peak pressure and temperature conditions stable at ∼10 Kbar and ∼985 °C respectively. The assemblage reported in this study has an important bearing on the crustal evolution of the high-grade metamorphism exhumed from a deeper level of the crust.
Progressive Agriculture, 2017
Progressive Agriculture, 2017
The present study was conducted for the post harvest losses occurring in fruits, vegetables, food... more The present study was conducted for the post harvest losses occurring in fruits, vegetables, food grains and oilseeds and marketing of farm produce in Kanpur district. This study was conducted to identify the major determinants of post harvest factors to reduce the losses and maximize the production. This research work was conducted in Ghatampur, Kalyanpur, Vidhnu, Bilhaur, Patara and Bhitargaon block using structured questionnaire. The main crops of Kanpur district were taken which were categorized among fruits, vegetables and food grains and vegetables. The various supports important for the area were for agri business, market development and sustainable agro market development. Among the studied blocks it was found that block Bilhaur and Kalyanpur has the maximum potential for the development of agribusiness. the post harvest losses, it was found that in fruits and food grains the post harvest losses has reduced when compared from 2016 to 2017 whereas it was reverse in case of ve...
Heliyon, 2018
The synthesized compound (2Z,4Z)-2,4-bis(4-chlorobenzylidene)-5-oxo-1phenylpyrrolidine-3-carboxyl... more The synthesized compound (2Z,4Z)-2,4-bis(4-chlorobenzylidene)-5-oxo-1phenylpyrrolidine-3-carboxylic acid (BCOPCA) was characterised by Ultraviolet, FT-Infra Red, 1 H, 13 C Nuclear Magnetic Resonance and mass spectroscopy. The compound was further subjected to quantum chemical calculations at the level of density functional theory (DFT) using 6-31G (d,p) basis sets method with B3LYP and CAM-B3LYP hybrid functionals. The intramolecular interactions, polarizability, hyperpolarizability and nonlinear optical properties of the title compound were also incorporated in the study. The total first static hyperpolarizability (b 0 ¼ 19.477 Â 10 À30 and 16.924 Â 10 À30 esu) value was also computed and indicated the title molecule as an interesting forthcoming NLO
International Journal of Current Microbiology and Applied Sciences, 2017
Cauliflower growers and constraints.
International Journal of Current Microbiology and Applied Sciences, 2017
Key Engineering Materials, 2005
Self-assembled nano-materials are currently an area of research with high throughput due to the o... more Self-assembled nano-materials are currently an area of research with high throughput due to the opportunities it provides to fields ranging from semiconductor engineering to gene delivery. There is also considerable interest in nano-particulate systems that attain a lower energy state by self-assembly through favorable and repeated surface interactions as they mimic those commonly found in natural biological systems. This work presents a simple route to first synthesise a highly stable suspension of nano-hydroxyapatite (~40nm) with chitosan and subsequently self-assemble the suspended nano-hydroxyapatite particulates onto a substrate.
Indian Journal of Forensic Medicine & Toxicology, 2014
Accident is an unexpected, unplanned occurrence which may involve injury or it may be defined as ... more Accident is an unexpected, unplanned occurrence which may involve injury or it may be defined as an unpremeditated event resulting in recognizable damage. Railway related injuries are not those uncommon occurrences in forensic practise. Among the varied presentation of injuries, superficial injuries along with fractures were commonly observed. Proper history taking along with performance of meticulous autopsy following standard protocols is mandatory to resolve the cases associated with railway traffic related deaths. Public awareness linked with strict legislative control is the key for the prevention of railway related injuries and deaths.
Journal of Materials Science, 1989
... Growth of single crystals of bismuth sulpho chloride in gel R. ROOP KUMAR, G. RAMAN AND FD GN... more ... Growth of single crystals of bismuth sulpho chloride in gel R. ROOP KUMAR, G. RAMAN AND FD GNANAM Crystal Growth Centre, Anna University, Madras-25, India ... The crystals grown have been identified as BiSCI by X-ray diffraction analysis. ...
Crystal Research and Technology, 1991
... Short Note. Growth of Single Crystals of SbSeCl in Gels. G. Raman,; R. Roop Kumar,; FD Gnanam... more ... Short Note. Growth of Single Crystals of SbSeCl in Gels. G. Raman,; R. Roop Kumar,; FD Gnanam. Article first published online: 19 FEB 2006. DOI: 10.1002/crat.2170260732. Copyright © 1991 WILEY-VCH Verlag GmbH & Co. KGaA. Issue. Crystal Research and Technology. ...
Progressive Agriculture, 2017
![Research paper thumbnail of Synthesis, Spectroscopic & DFT studies of Novel N-((1H-benzo[d]imidazol-1-yl) methyl)-N-(2-(trifluoromethyl)phenyl)-4,5-dihydrothiazol-2-amine](https://attachments.academia-assets.com/106180152/thumbnails/1.jpg)
](Indian Journal of Pure & Applied Physics
Synthesis of N-((1H-benzo[d]imidazol-1-yl)methyl)-N-(2-(trifluoromethyl)phenyl)-4,5-dihydrothiazo... more Synthesis of N-((1H-benzo[d]imidazol-1-yl)methyl)-N-(2-(trifluoromethyl)phenyl)-4,5-dihydrothiazol-2-amine was done followed by its characterization by various spectral techniques. DFT studies of the compound were performed at B3LYP level to study various structural parameters and thermodynamic variables. The correlation of observed transitions with the electronic transitions had been done via NBO analysis. In addition to it, the HOMO and LUMO energy gaps and identification of sites liable for electrophilic and nucleophilic attack were done by MESP and ESP plots.
![Research paper thumbnail of Synthesis, spectroscopic and DFT studies of novel fluorescent dyes: 3-Aminoimidazo[1,2-a]pyridines possessing 4-pyrone moieties](https://attachments.academia-assets.com/101558325/thumbnails/1.jpg)
](Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2014
A novel 4-(morpholinomethyl)-5-oxo-1-phenylpyrrolidine-3-carboxylic acid has been synthesized and... more A novel 4-(morpholinomethyl)-5-oxo-1-phenylpyrrolidine-3-carboxylic acid has been synthesized and its structural elucidation has been done by UV, FT-IR, 1 H and 13 C NMR spectroscopy. All quantum chemical calculations were carried out at level of density functional theory (DFT) with B3LYP function using 6-31G (d, p) basis atomic set. AIM approach has been incorporated for the analysis of various intermolecular interactions. Polarizability and hyperpolarizabilities values have been calculated along with the exploration of nonlinear optical properties of the title compound. DFT computed total first static hyperpolarizability (β 0 = 0.2747×10-30 esu) indicates that title molecule could be an area of interest as an attractive future NLO material. For the analysis of thermal behaviour of title molecule, thermodynamic properties such as heat capacity, entropy and enthalpy change at various temperatures have been calculated. The NBO computations were done for the correlation of possible transitions with the electronic transitions. Electrophilic and nucleophilic regions were identified with the help of MESP plot. Determination of energy gap has been done by using HOMO and LUMO energy values, along with the computation of electronegativity and electrophilicity indices.
Journal of Superconductivity and Novel Magnetism
In this work, Ce/Zr-substituted strontium hexaferrite (SrFe12O19) nanoparticles have been synthes... more In this work, Ce/Zr-substituted strontium hexaferrite (SrFe12O19) nanoparticles have been synthesized by the sol–gel auto combustion method and the synthesized samples were annealed at 900 ∘C for 3 h. The powder XRD pattern revealed that all the diffraction peaks match the hexagonal phase of strontium hexaferrite and the lattice parameters are determined. The VSM study revealed that the values of saturation magnetization, coercivity and remanent magnetization are decreased for the Ce/Zr-substituted strontium hexaferrite sample. Thermal analysis reveals the formation of a hexagonal phase above 670 ∘C. The specific vibration band of hexagonal ferrite was observed in the range 400–600 cm−1. The FE-SEM image shows that the particles are spherical shaped and particle size varied from 37 to 44 nm.
Journal of Forensic Medicine, 2013
Since pre independence era, Indian railways network across the country has shown a phenomenal dev... more Since pre independence era, Indian railways network across the country has shown a phenomenal development and exerted a strong impact over the transportation and economic development of the country in a positive way. The increase in Population of the country has led to an increase in the railway traffic which in turn has contributed to an increase in unnatural deaths due to railway mishaps. The incidence of deaths due to Railway accidents constitutes a significant group of transportation related morbidities and mortalities amounting to 7.6% [2008] of all the accidental deaths occurring in the country. In the light of the above, the present study was conducted to assess the impact of the railway traffic accidents occurring in the Khammam region of Andhra pradesh. The present study shows that males were predominantly involved in accidental as well as suicidal railway related deaths. Majority of the victims were in the age group of 30–39 yrs and belonged to Hindu religion. The exact identity in few of the cases could not be made out. The incidence of railway accidents was seen to be more during the day time and occurred usually within town limits. Most of the affected persons died on the spot due to the injuries that they sustained.
Journal of Forensic Medicine, 2013
A posterior urethral valve is an obstructing membrane in the posterior part of male urethra leadi... more A posterior urethral valve is an obstructing membrane in the posterior part of male urethra leading to renal failure and death occurring in 1:5000 to 8000 male live births. The incidence of intrauterine deaths related to posterior urethral valve is under reported. The cause for the occurrence is unclear. Posterior Urethral Valve syndrome is a syndrome of obstructive uropathy resulting in hypertrophy of bladder, ureters and dysplasia of the kidneys. Prenatal ultrasonography is a gold standard diagnostic tool. The fetal autopsy conducted over the case presented here demonstrates all the classical findings of the obstructive uropathy (renal dysplasia, hydronephrosis, bladder hypertrophy, hydro ureters). The case reiterates the importance of prenatal ultrasonography and meticulous fetal autopsy to determine the cause of intra uterine fetal death.
Journal of Molecular Structure, Apr 1, 2018
A novel 4-(morpholinomethyl)-5-oxo-1-phenylpyrrolidine-3-carboxylic acid has been synthesized and... more A novel 4-(morpholinomethyl)-5-oxo-1-phenylpyrrolidine-3-carboxylic acid has been synthesized and its structural elucidation has been done by UV, FT-IR, 1 H and 13 C NMR spectroscopy. All quantum chemical calculations were carried out at level of density functional theory (DFT) with B3LYP function using 6-31G (d, p) basis atomic set. AIM approach has been incorporated for the analysis of various intermolecular interactions. Polarizability and hyperpolarizabilities values have been calculated along with the exploration of nonlinear optical properties of the title compound. DFT computed total first static hyperpolarizability (β 0 = 0.2747×10-30 esu) indicates that title molecule could be an area of interest as an attractive future NLO material. For the analysis of thermal behaviour of title molecule, thermodynamic properties such as heat capacity, entropy and enthalpy change at various temperatures have been calculated. The NBO computations were done for the correlation of possible transitions with the electronic transitions. Electrophilic and nucleophilic regions were identified with the help of MESP plot. Determination of energy gap has been done by using HOMO and LUMO energy values, along with the computation of electronegativity and electrophilicity indices.
Trans Tech Publications Ltd. eBooks, Apr 15, 2005
The use of precipitation chemistry to synthesize hydroxyapatite (HA) normally yields nano-crystal... more The use of precipitation chemistry to synthesize hydroxyapatite (HA) normally yields nano-crystals with various morphology and sizes depending on the synthesis conditions (e.g., temperature, concentration, level of agitation, pH, etc.). This study involved the synthesis of HA nano-rods/whiskers by modifying an existing chemical route for HA synthesis. The nano-rods were characterised for their structure and morphology and subsequently sintered. The mechanical properties of the sintered compacts were also assessed.
European Journal of Molecular & Clinical Medicine, Dec 23, 2020
Journal of the Geological Society of India, 2021
An infrequent occurrence of sapphirine from metapelite rocks of the Cardamom hills of South India... more An infrequent occurrence of sapphirine from metapelite rocks of the Cardamom hills of South India has been reported. This report of sapphirine may not be the first from the Southern Granulite Terrane (SGT) but is essentially from a new locality. The studied metapelites are silica-undersaturated devoid of garnet and the sapphirine symplectites. The symplectites of orthopyroxene + cordierite, orthopyroxene + K-feldspar + cordierite, orthopyroxene + sapphirine + cordierite ± K-feldspar ± biotite, orthopyroxene + biotite + cordierite + K-feldspar are discernible. The textural patterns show partial to complete pseudomorphism of the initially formed orthopyroxene and sapphirine and their succeeding decomposition to present stage. The relative XMg calculated for the key minerals show the trend as: Crd > Spr > Bt > Opx. The pseudosection modelling and the calculated P-T diagram drawn from the average bulk composition of the studied metapelite connote isothermal decompression with peak pressure and temperature conditions stable at ∼10 Kbar and ∼985 °C respectively. The assemblage reported in this study has an important bearing on the crustal evolution of the high-grade metamorphism exhumed from a deeper level of the crust.
Progressive Agriculture, 2017
Progressive Agriculture, 2017
The present study was conducted for the post harvest losses occurring in fruits, vegetables, food... more The present study was conducted for the post harvest losses occurring in fruits, vegetables, food grains and oilseeds and marketing of farm produce in Kanpur district. This study was conducted to identify the major determinants of post harvest factors to reduce the losses and maximize the production. This research work was conducted in Ghatampur, Kalyanpur, Vidhnu, Bilhaur, Patara and Bhitargaon block using structured questionnaire. The main crops of Kanpur district were taken which were categorized among fruits, vegetables and food grains and vegetables. The various supports important for the area were for agri business, market development and sustainable agro market development. Among the studied blocks it was found that block Bilhaur and Kalyanpur has the maximum potential for the development of agribusiness. the post harvest losses, it was found that in fruits and food grains the post harvest losses has reduced when compared from 2016 to 2017 whereas it was reverse in case of ve...
Heliyon, 2018
The synthesized compound (2Z,4Z)-2,4-bis(4-chlorobenzylidene)-5-oxo-1phenylpyrrolidine-3-carboxyl... more The synthesized compound (2Z,4Z)-2,4-bis(4-chlorobenzylidene)-5-oxo-1phenylpyrrolidine-3-carboxylic acid (BCOPCA) was characterised by Ultraviolet, FT-Infra Red, 1 H, 13 C Nuclear Magnetic Resonance and mass spectroscopy. The compound was further subjected to quantum chemical calculations at the level of density functional theory (DFT) using 6-31G (d,p) basis sets method with B3LYP and CAM-B3LYP hybrid functionals. The intramolecular interactions, polarizability, hyperpolarizability and nonlinear optical properties of the title compound were also incorporated in the study. The total first static hyperpolarizability (b 0 ¼ 19.477 Â 10 À30 and 16.924 Â 10 À30 esu) value was also computed and indicated the title molecule as an interesting forthcoming NLO
International Journal of Current Microbiology and Applied Sciences, 2017
Cauliflower growers and constraints.
International Journal of Current Microbiology and Applied Sciences, 2017
Key Engineering Materials, 2005
Self-assembled nano-materials are currently an area of research with high throughput due to the o... more Self-assembled nano-materials are currently an area of research with high throughput due to the opportunities it provides to fields ranging from semiconductor engineering to gene delivery. There is also considerable interest in nano-particulate systems that attain a lower energy state by self-assembly through favorable and repeated surface interactions as they mimic those commonly found in natural biological systems. This work presents a simple route to first synthesise a highly stable suspension of nano-hydroxyapatite (~40nm) with chitosan and subsequently self-assemble the suspended nano-hydroxyapatite particulates onto a substrate.
Indian Journal of Forensic Medicine & Toxicology, 2014
Accident is an unexpected, unplanned occurrence which may involve injury or it may be defined as ... more Accident is an unexpected, unplanned occurrence which may involve injury or it may be defined as an unpremeditated event resulting in recognizable damage. Railway related injuries are not those uncommon occurrences in forensic practise. Among the varied presentation of injuries, superficial injuries along with fractures were commonly observed. Proper history taking along with performance of meticulous autopsy following standard protocols is mandatory to resolve the cases associated with railway traffic related deaths. Public awareness linked with strict legislative control is the key for the prevention of railway related injuries and deaths.
Journal of Materials Science, 1989
... Growth of single crystals of bismuth sulpho chloride in gel R. ROOP KUMAR, G. RAMAN AND FD GN... more ... Growth of single crystals of bismuth sulpho chloride in gel R. ROOP KUMAR, G. RAMAN AND FD GNANAM Crystal Growth Centre, Anna University, Madras-25, India ... The crystals grown have been identified as BiSCI by X-ray diffraction analysis. ...
Crystal Research and Technology, 1991
... Short Note. Growth of Single Crystals of SbSeCl in Gels. G. Raman,; R. Roop Kumar,; FD Gnanam... more ... Short Note. Growth of Single Crystals of SbSeCl in Gels. G. Raman,; R. Roop Kumar,; FD Gnanam. Article first published online: 19 FEB 2006. DOI: 10.1002/crat.2170260732. Copyright © 1991 WILEY-VCH Verlag GmbH & Co. KGaA. Issue. Crystal Research and Technology. ...
Progressive Agriculture, 2017
Indian Journal of Pure & Applied Physics
Synthesis of N-((1H-benzo[d]imidazol-1-yl)methyl)-N-(2-(trifluoromethyl)phenyl)-4,5-dihydrothiazo... more Synthesis of N-((1H-benzo[d]imidazol-1-yl)methyl)-N-(2-(trifluoromethyl)phenyl)-4,5-dihydrothiazol-2-amine was done followed by its characterization by various spectral techniques. DFT studies of the compound were performed at B3LYP level to study various structural parameters and thermodynamic variables. The correlation of observed transitions with the electronic transitions had been done via NBO analysis. In addition to it, the HOMO and LUMO energy gaps and identification of sites liable for electrophilic and nucleophilic attack were done by MESP and ESP plots.
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2014
A novel 4-(morpholinomethyl)-5-oxo-1-phenylpyrrolidine-3-carboxylic acid has been synthesized and... more A novel 4-(morpholinomethyl)-5-oxo-1-phenylpyrrolidine-3-carboxylic acid has been synthesized and its structural elucidation has been done by UV, FT-IR, 1 H and 13 C NMR spectroscopy. All quantum chemical calculations were carried out at level of density functional theory (DFT) with B3LYP function using 6-31G (d, p) basis atomic set. AIM approach has been incorporated for the analysis of various intermolecular interactions. Polarizability and hyperpolarizabilities values have been calculated along with the exploration of nonlinear optical properties of the title compound. DFT computed total first static hyperpolarizability (β 0 = 0.2747×10-30 esu) indicates that title molecule could be an area of interest as an attractive future NLO material. For the analysis of thermal behaviour of title molecule, thermodynamic properties such as heat capacity, entropy and enthalpy change at various temperatures have been calculated. The NBO computations were done for the correlation of possible transitions with the electronic transitions. Electrophilic and nucleophilic regions were identified with the help of MESP plot. Determination of energy gap has been done by using HOMO and LUMO energy values, along with the computation of electronegativity and electrophilicity indices.
Journal of Superconductivity and Novel Magnetism
In this work, Ce/Zr-substituted strontium hexaferrite (SrFe12O19) nanoparticles have been synthes... more In this work, Ce/Zr-substituted strontium hexaferrite (SrFe12O19) nanoparticles have been synthesized by the sol–gel auto combustion method and the synthesized samples were annealed at 900 ∘C for 3 h. The powder XRD pattern revealed that all the diffraction peaks match the hexagonal phase of strontium hexaferrite and the lattice parameters are determined. The VSM study revealed that the values of saturation magnetization, coercivity and remanent magnetization are decreased for the Ce/Zr-substituted strontium hexaferrite sample. Thermal analysis reveals the formation of a hexagonal phase above 670 ∘C. The specific vibration band of hexagonal ferrite was observed in the range 400–600 cm−1. The FE-SEM image shows that the particles are spherical shaped and particle size varied from 37 to 44 nm.