Vinit Sharma - Academia.edu (original) (raw)

Papers by Vinit Sharma

In this paper, we report the energy bands, density of states and the first ever Compton profiles ... more In this paper, we report the energy bands, density of states and the first ever Compton profiles of PbS and PbSe computed in the framework of spin-polarised relativistic Korringa–Kohn–Rostoker and ab initio pseudopotential with Hartree–Fock and density functional theory schemes. In addition, we have computed the energy bands and density of states using full-potential linearised augmented plane wave method. To

In this paper, we report the first ever experimental Compton profile study of WS 2 and WSe 2 empl... more In this paper, we report the first ever experimental Compton profile study of WS 2 and WSe 2 employing 20 Ci 137 Cs Compton spectrometer. To interpret our experimental data, the electronic properties of these compounds have been determined by linear combination of atomic orbitals, full potential linearised augmented plane-wave and spin polarised relativistic Korringa-Kohn-Rostoker (SPR-KKR) schemes. The band structure calculations show that both the WS 2 and WSe 2 are indirect-gap semiconductors. The SPR-KKR calculations are found to be relatively in poor agreement with the experimental electron momentum densities. The relative nature of bonding in both the dichalcogenides is explained in terms of equalvalence-electron-density profiles, Mulliken's population and valence band charge densities.

The formation of magnetic moment in the p-orbital doped semiconductors is named d 0 magnetism, wh... more The formation of magnetic moment in the p-orbital doped semiconductors is named d 0 magnetism, where the ion without partially filled d states is found to be responsible for the magnetism. To study origin of magnetism in such p-orbital doped semiconductors, we report a theoretical investigation of electronic and magnetic properties of N doped MgO, with and without an oxygen vacancy. The first principle calculations have been performed using ab initio total energy calculations with in generalized gradient approximation (GGA) as embodied in projector augmented wave (PAW) method. Our results suggest that without other defects, the oxygen vacancy does not reflect magnetism. It is observed that when N, substitutes for oxygen, it shows spontaneous magnetization and affect the magnetic moment of dopant. Although, the total magnetic moment of the system is independent of the presence of oxygen vacancies and found to be 1 B.

AIP Conference …, 2009

As in everywhere else in the world in 2008, in India women constitute a minority of physics stude... more As in everywhere else in the world in 2008, in India women constitute a minority of physics students, and an even smaller minority among faculty members and senior scientists. However, this situation (which is not unique to physics, but applies to mathematics and ...

… /Social and Preventive …, 1996

Kheda district in Gujarat is well known for milk production and well-organised dairy co-operative... more Kheda district in Gujarat is well known for milk production and well-organised dairy co-operatives. This district is also one of the lead-ing tobacco growing areas of India. For the purpose of this study, Dharmaj, a small town situated 25 km away from Pramukhswami ...

Rev Nutr, 2007

OBJETIVO: Identificar variáveis sócio-demográficas e comportamentais potencialmente associadas à ... more OBJETIVO: Identificar variáveis sócio-demográficas e comportamentais potencialmente associadas à obesidade abdominal, em mulheres usuárias de unidade básica de saúde. MÉTODOS: Foram investigadas 827 mulheres entre 12 e 65 anos, residentes na região Metropolitana de Belo Horizonte, Minas Gerais, Brasil, utilizando-se desenho transversal. A obesidade abdominal foi definida como valores de circunferência da cintura >88cm. A associação entre obesidade abdominal e as covariáveis foi avaliada por meio da técnica de regressão logística não condicional, com modelos hierarquizados, que estimam os Odds Ratio e os respectivos intervalos de confiança de 95%. RESULTADOS: As maiores prevalências de obesidade abdominal foram encontradas em mulheres…

The Lancet, 2007

Worldwide, societal shifts and behavioural patterns exacerbated by unique developmental vulnerabi... more Worldwide, societal shifts and behavioural patterns exacerbated by unique developmental vulnerabilities create a confluence of factors that place today's adolescents at heightened risks for poor health outcomes. Country-level data show that continued investment in effective prevention and ...

This paper investigates the impact of the distribution sector on the real exchange rate, controll... more This paper investigates the impact of the distribution sector on the real exchange rate, controlling for the Balassa-Samuelson effect, as well as other macro variables. Long-run coefficients are estimated using a panel dynamic OLS estimator. The main result is that an increase in the productivity and competitiveness of the distribution sector with respect to foreign countries leads to an appreciation of the real exchange rate, similarly to what a relative increase in the domestic productivity of tradables does. This contrasts with the result that one would expect by considering the distribution sector as belonging to the non-tradable sector. One explanation may lie in the use of the services from the distribution sector in the tradable sector. Our results also contribute to explaining the socalled PPP puzzle.

In this paper, we report the energy bands, density of states and the first ever Compton profiles ... more In this paper, we report the energy bands, density of states and the first ever Compton profiles of PbS and PbSe computed in the framework of spin-polarised relativistic Korringa–Kohn–Rostoker and ab initio pseudopotential with Hartree–Fock and density functional theory schemes. In addition, we have computed the energy bands and density of states using full-potential linearised augmented plane wave method. To

In this paper, we report the first ever experimental Compton profile study of WS 2 and WSe 2 empl... more In this paper, we report the first ever experimental Compton profile study of WS 2 and WSe 2 employing 20 Ci 137 Cs Compton spectrometer. To interpret our experimental data, the electronic properties of these compounds have been determined by linear combination of atomic orbitals, full potential linearised augmented plane-wave and spin polarised relativistic Korringa-Kohn-Rostoker (SPR-KKR) schemes. The band structure calculations show that both the WS 2 and WSe 2 are indirect-gap semiconductors. The SPR-KKR calculations are found to be relatively in poor agreement with the experimental electron momentum densities. The relative nature of bonding in both the dichalcogenides is explained in terms of equalvalence-electron-density profiles, Mulliken's population and valence band charge densities.

The formation of magnetic moment in the p-orbital doped semiconductors is named d 0 magnetism, wh... more The formation of magnetic moment in the p-orbital doped semiconductors is named d 0 magnetism, where the ion without partially filled d states is found to be responsible for the magnetism. To study origin of magnetism in such p-orbital doped semiconductors, we report a theoretical investigation of electronic and magnetic properties of N doped MgO, with and without an oxygen vacancy. The first principle calculations have been performed using ab initio total energy calculations with in generalized gradient approximation (GGA) as embodied in projector augmented wave (PAW) method. Our results suggest that without other defects, the oxygen vacancy does not reflect magnetism. It is observed that when N, substitutes for oxygen, it shows spontaneous magnetization and affect the magnetic moment of dopant. Although, the total magnetic moment of the system is independent of the presence of oxygen vacancies and found to be 1 B.

AIP Conference …, 2009

As in everywhere else in the world in 2008, in India women constitute a minority of physics stude... more As in everywhere else in the world in 2008, in India women constitute a minority of physics students, and an even smaller minority among faculty members and senior scientists. However, this situation (which is not unique to physics, but applies to mathematics and ...

… /Social and Preventive …, 1996

Kheda district in Gujarat is well known for milk production and well-organised dairy co-operative... more Kheda district in Gujarat is well known for milk production and well-organised dairy co-operatives. This district is also one of the lead-ing tobacco growing areas of India. For the purpose of this study, Dharmaj, a small town situated 25 km away from Pramukhswami ...

Rev Nutr, 2007

OBJETIVO: Identificar variáveis sócio-demográficas e comportamentais potencialmente associadas à ... more OBJETIVO: Identificar variáveis sócio-demográficas e comportamentais potencialmente associadas à obesidade abdominal, em mulheres usuárias de unidade básica de saúde. MÉTODOS: Foram investigadas 827 mulheres entre 12 e 65 anos, residentes na região Metropolitana de Belo Horizonte, Minas Gerais, Brasil, utilizando-se desenho transversal. A obesidade abdominal foi definida como valores de circunferência da cintura >88cm. A associação entre obesidade abdominal e as covariáveis foi avaliada por meio da técnica de regressão logística não condicional, com modelos hierarquizados, que estimam os Odds Ratio e os respectivos intervalos de confiança de 95%. RESULTADOS: As maiores prevalências de obesidade abdominal foram encontradas em mulheres…

The Lancet, 2007

Worldwide, societal shifts and behavioural patterns exacerbated by unique developmental vulnerabi... more Worldwide, societal shifts and behavioural patterns exacerbated by unique developmental vulnerabilities create a confluence of factors that place today's adolescents at heightened risks for poor health outcomes. Country-level data show that continued investment in effective prevention and ...

This paper investigates the impact of the distribution sector on the real exchange rate, controll... more This paper investigates the impact of the distribution sector on the real exchange rate, controlling for the Balassa-Samuelson effect, as well as other macro variables. Long-run coefficients are estimated using a panel dynamic OLS estimator. The main result is that an increase in the productivity and competitiveness of the distribution sector with respect to foreign countries leads to an appreciation of the real exchange rate, similarly to what a relative increase in the domestic productivity of tradables does. This contrasts with the result that one would expect by considering the distribution sector as belonging to the non-tradable sector. One explanation may lie in the use of the services from the distribution sector in the tradable sector. Our results also contribute to explaining the socalled PPP puzzle.