Chitosan capped Silver nanoparticles used as Pressure sensorsIOSR Journals
In the present work, we report the synthesis and characterization of silver nanoparticles, capped with chitosan (biopolymer ). The majority of the particles produced in this way had sizes around 18 nm. Composite films of capped silver nanoparticles and chitosan polymer were studied to understand the charge transport under different pressure. Films of different compositions were prepared to measure current voltage curves across the film thickness. The results reveal that these materials exhibit electrical conductivity as predicted by the “classical theory of percolation”. Pressure dependent electrical conductivity and these composites can be explored to develop low cost pressure sensors.
Today, occupational accidents are considered among the potential threats because of their serious humanitarian, economic, social, and environmental consequences. Occupational accidents and injuries are the third cause of mortality in world and the second one in Iran. In addition, the economic and environmental damages of occupational accidents are catastrophic too.According to International Labor Organization (ILO) report in 1999 the average estimated fatal occupational accident rate was 140/100 000 workers and the number of fatal accidents was 335000. Though the registered number of accidents in Iran cannot be a faultless account of all the accidents happened, but in 2000, about 12000 work related accidents have been registered by the Department of Social Security. Calculations indicated that approximately 345000 fatal occupational accidents occurred in 1998 and that over 260 million occupational accidents causing at least 3 days absence happened in the same year. This work aims to study the relation of occupational stress of workers and the accidents in a rice milling industry. The data was collected using questionnaire. The questionnaire contained 30 questions to measure the perception s of the employees about the management practices. A five point likert scale was used. This was prepared based on review of related literature .The contents of this draft questionnaire were discussed with senior safety professional in the industry. Data was analyzed using IBM SPSS Statistics 20 software. Descriptive statistics and correlations of the studied variables were first analyzed. Confirmatory factor analysis was used to verify the reliability of the management practices. Regression analysis was conducted to test the goodness of fit of the various models. Keywords - industrial safety, occupational stress, accidents, factor analysis
The Phase Theory towards the Unification of the Forces of Nature the Heart Be...IOSR Journals
A new theory has been presented, for the first time, called the "Phase Theory", which is the natural evolution of the physical thought and is considered the one beyond the super string theory. This theory solves the unsolved problems of the mysterious of matter, antimatter and interactions and makes a wide step towards the unification of the forces of nature. In this theory, the vibrating string of different frequency modes which determines the different types of elementary particles is replaced by a three dimensional infinitesimal pulsating (black)holes with the same frequency. Different types of elementary particles are determined by different phase angles associated with the same frequency. This allows the force of interactions to take place among elementary particles, without the need to invoke the notion of the force carrier particles, as the (stable) force of interactions can never take place between elementary particles at different frequencies. Besides the strong mathematical proofs given in this paper to prove its truthfulness, an experimental prediction has been given to confirm the theory presented in the form of the relation between the electron radius and quarks radii. The paper shows that quarks are direct consequence of this theory, and solves "the flavor problem" in QCD, and gives the clue to answer the questions of "Why are there so many flavors? The paper also derives the equation of the big bang theory which describes the singularity of the moment of creation of the universe.
Half-metallic-ferrimagnetic Sr2CrWO6 and Sr2FeReO6 materials for room tempera...IOSR Journals
Complex perovskite-like materials which include magnetic transition elements have relevance due to
the technological perspectives in the spintronics industry. In this work, we report the studies of the electronic
and magnetic characterizations of Sr2CrWO6 and Sr2FeReO6 as spintronics materials at room temperature by
using the linearized muffin-tin orbitals (LMTO) method through the atomic-sphere approximation (ASA) within
the local spin density approximation (LSDA). The interchange-correlation potential was included through the
LSDA+U technique. The band structure results at room-temperature predict half-metallic ferrimagnetic ground
state for Sr2CrWO6 and Sr2FeReO6 with total magnetic moment of 1.878 μB and 3.184 μB per formula unit,
respectively, agreement with the previous theoretical and experimental results.
The characteristics of SecondaryCharged Particlesproduced in 4.5 A GeV/c 28Si...IOSR Journals
To study the characteristics of secondary charged particles produced in 4.5GeV/c 28Si-nucleus interactions a lot of rigorous attempts have been made. The results reveal that the multiplicity correlations are not linear. The findings do not agree with those reported by several earlier workers. However, these correlations may be reproduced quite well by second order polynomial. It is also observed that the dependence of mean normalized, RA and reduced multiplicity, RS on the multiplicity of different charged secondaries is linear up to a certain value and then acquire almost a constant value. Results also reveal that the Kth root of central moment increases with the increase of <ns> and the values of normalized moments do not depend on the nature and the energy of the projectiles. Finally, it is observed that the integral multiplicity distribution of heavily ionizing tracks provide a method for selecting the disintegrations caused by the projectile due to different target nuclei of nuclear emulsion.
Structure and transport coefficients of liquid Argon and neon using molecular...IOSR Journals
Molecular dynamics simulation was employed to deduce the dynamics property distribution function of Argon
and Neon liquid. With the use of a Lennnard-Jones pair potential model, an inter-atomic interaction function was observed
between pair of particles in a system of many particles, which indicates that the pair distribution function determines the
structures of liquid Argon. This distribution effect regarding the liquid structure of Lennard-Jones potential was strongly
affected such that its viscosity depends on density distribution of the model. The radial distribution function, g(r) agrees well
with the experimental data used. Our results regarding Argon and Neon show that their signatures are quite different at
each temperature, such that their corresponding viscosity is not consistent. Two sharps turning points are more
prominent in Argon, one at temperature of 83.88 Kelvin (K) with viscosity of -0.548 Pascal second (Pa-s) and the
other at temperature of 215.64 K with viscosity of -0.228 Pa-s.
In Argon and Neon liquid, temperature and density are inversely and directly proportional to diffusion
coefficient, in that order. This characteristic suggests that the observed non linearity could result from the non
uniform thermal expansion in liquid Argon and Neon, which are between the temperature range of 21.98 K and
239.52 K.
This daylong presentation for library directors attending the Northeast Kansas Library System Library Directors Institute on November 7, 2013 in Valley Falls, Kansas, is designed to help participants further hone their skills in fostering community collaborations through a series of conversations and exercises demonstrating the collaborative process.
Chitosan capped Silver nanoparticles used as Pressure sensorsIOSR Journals
In the present work, we report the synthesis and characterization of silver nanoparticles, capped with chitosan (biopolymer ). The majority of the particles produced in this way had sizes around 18 nm. Composite films of capped silver nanoparticles and chitosan polymer were studied to understand the charge transport under different pressure. Films of different compositions were prepared to measure current voltage curves across the film thickness. The results reveal that these materials exhibit electrical conductivity as predicted by the “classical theory of percolation”. Pressure dependent electrical conductivity and these composites can be explored to develop low cost pressure sensors.
Today, occupational accidents are considered among the potential threats because of their serious humanitarian, economic, social, and environmental consequences. Occupational accidents and injuries are the third cause of mortality in world and the second one in Iran. In addition, the economic and environmental damages of occupational accidents are catastrophic too.According to International Labor Organization (ILO) report in 1999 the average estimated fatal occupational accident rate was 140/100 000 workers and the number of fatal accidents was 335000. Though the registered number of accidents in Iran cannot be a faultless account of all the accidents happened, but in 2000, about 12000 work related accidents have been registered by the Department of Social Security. Calculations indicated that approximately 345000 fatal occupational accidents occurred in 1998 and that over 260 million occupational accidents causing at least 3 days absence happened in the same year. This work aims to study the relation of occupational stress of workers and the accidents in a rice milling industry. The data was collected using questionnaire. The questionnaire contained 30 questions to measure the perception s of the employees about the management practices. A five point likert scale was used. This was prepared based on review of related literature .The contents of this draft questionnaire were discussed with senior safety professional in the industry. Data was analyzed using IBM SPSS Statistics 20 software. Descriptive statistics and correlations of the studied variables were first analyzed. Confirmatory factor analysis was used to verify the reliability of the management practices. Regression analysis was conducted to test the goodness of fit of the various models. Keywords - industrial safety, occupational stress, accidents, factor analysis
The Phase Theory towards the Unification of the Forces of Nature the Heart Be...IOSR Journals
A new theory has been presented, for the first time, called the "Phase Theory", which is the natural evolution of the physical thought and is considered the one beyond the super string theory. This theory solves the unsolved problems of the mysterious of matter, antimatter and interactions and makes a wide step towards the unification of the forces of nature. In this theory, the vibrating string of different frequency modes which determines the different types of elementary particles is replaced by a three dimensional infinitesimal pulsating (black)holes with the same frequency. Different types of elementary particles are determined by different phase angles associated with the same frequency. This allows the force of interactions to take place among elementary particles, without the need to invoke the notion of the force carrier particles, as the (stable) force of interactions can never take place between elementary particles at different frequencies. Besides the strong mathematical proofs given in this paper to prove its truthfulness, an experimental prediction has been given to confirm the theory presented in the form of the relation between the electron radius and quarks radii. The paper shows that quarks are direct consequence of this theory, and solves "the flavor problem" in QCD, and gives the clue to answer the questions of "Why are there so many flavors? The paper also derives the equation of the big bang theory which describes the singularity of the moment of creation of the universe.
Half-metallic-ferrimagnetic Sr2CrWO6 and Sr2FeReO6 materials for room tempera...IOSR Journals
Complex perovskite-like materials which include magnetic transition elements have relevance due to
the technological perspectives in the spintronics industry. In this work, we report the studies of the electronic
and magnetic characterizations of Sr2CrWO6 and Sr2FeReO6 as spintronics materials at room temperature by
using the linearized muffin-tin orbitals (LMTO) method through the atomic-sphere approximation (ASA) within
the local spin density approximation (LSDA). The interchange-correlation potential was included through the
LSDA+U technique. The band structure results at room-temperature predict half-metallic ferrimagnetic ground
state for Sr2CrWO6 and Sr2FeReO6 with total magnetic moment of 1.878 μB and 3.184 μB per formula unit,
respectively, agreement with the previous theoretical and experimental results.
The characteristics of SecondaryCharged Particlesproduced in 4.5 A GeV/c 28Si...IOSR Journals
To study the characteristics of secondary charged particles produced in 4.5GeV/c 28Si-nucleus interactions a lot of rigorous attempts have been made. The results reveal that the multiplicity correlations are not linear. The findings do not agree with those reported by several earlier workers. However, these correlations may be reproduced quite well by second order polynomial. It is also observed that the dependence of mean normalized, RA and reduced multiplicity, RS on the multiplicity of different charged secondaries is linear up to a certain value and then acquire almost a constant value. Results also reveal that the Kth root of central moment increases with the increase of <ns> and the values of normalized moments do not depend on the nature and the energy of the projectiles. Finally, it is observed that the integral multiplicity distribution of heavily ionizing tracks provide a method for selecting the disintegrations caused by the projectile due to different target nuclei of nuclear emulsion.
Structure and transport coefficients of liquid Argon and neon using molecular...IOSR Journals
Molecular dynamics simulation was employed to deduce the dynamics property distribution function of Argon
and Neon liquid. With the use of a Lennnard-Jones pair potential model, an inter-atomic interaction function was observed
between pair of particles in a system of many particles, which indicates that the pair distribution function determines the
structures of liquid Argon. This distribution effect regarding the liquid structure of Lennard-Jones potential was strongly
affected such that its viscosity depends on density distribution of the model. The radial distribution function, g(r) agrees well
with the experimental data used. Our results regarding Argon and Neon show that their signatures are quite different at
each temperature, such that their corresponding viscosity is not consistent. Two sharps turning points are more
prominent in Argon, one at temperature of 83.88 Kelvin (K) with viscosity of -0.548 Pascal second (Pa-s) and the
other at temperature of 215.64 K with viscosity of -0.228 Pa-s.
In Argon and Neon liquid, temperature and density are inversely and directly proportional to diffusion
coefficient, in that order. This characteristic suggests that the observed non linearity could result from the non
uniform thermal expansion in liquid Argon and Neon, which are between the temperature range of 21.98 K and
239.52 K.
This daylong presentation for library directors attending the Northeast Kansas Library System Library Directors Institute on November 7, 2013 in Valley Falls, Kansas, is designed to help participants further hone their skills in fostering community collaborations through a series of conversations and exercises demonstrating the collaborative process.
