Plastic waste accumulation has been recognized as one of the most critical challenges of modern s... more Plastic waste accumulation has been recognized as one of the most critical challenges of modern societies worldwide. Traditional waste management practices include open burning, landfilling, and incineration, resulting in greenhouse gas emissions and economic loss. In contrast, emerging techniques for plastic waste management include microwave-assisted conversion, plasma-assisted conversion, supercritical water conversion, and photo reforming to obtain high-value products. Problems with poorly managed plastic waste are particularly serious in developing countries. This review article examines the emerging strategies and production of various high-value-added products from plastic waste. Additionally, the uses of plastic waste in different sectors, such as construction, fuel production, wastewater treatment, electrode materials, carbonaceous nanomaterials, and other high-value-added products are reviewed. It has been observed that there is a pressing need to utilize plastic waste for...
Proceedings of the AAAI Conference on Artificial Intelligence
Death is an inevitable part of life and while it cannot be delayed indefinitely it is possible to... more Death is an inevitable part of life and while it cannot be delayed indefinitely it is possible to predict with some certainty when the health of a person is going to deteriorate. In this paper, we predict risk of mortality for patients from two large hospital systems in the Pacific Northwest. Using medical claims and electronic medical records (EMR) data we greatly improve prediction for risk of mortality and explore machine learning models with explanations for end of life predictions. The insights that are derived from the predictions can then be used to improve the quality of patient care towards the end of life.
Recently, hydrogen (H2) has emerged as a superior energy carrier that has the potential to replac... more Recently, hydrogen (H2) has emerged as a superior energy carrier that has the potential to replace fossil fuel. However, storing H2 under safe and operable conditions is still a challenging process due to the current commercial method, i.e., H2 storage in a pressurised and liquified state, which requires extremely high pressure and extremely low temperature. To solve this problem, research on solid-state H2 storage materials is being actively conducted. Among the solid-state H2 storage materials, borohydride is a potential candidate for H2 storage owing to its high gravimetric capacity (majority borohydride materials release >10 wt% of H2). Mg(BH4)2, which is included in the borohydride family, shows promise as a good H2 storage material owing to its high gravimetric capacity (14.9 wt%). However, its practical application is hindered by high thermal decomposition temperature (above 300 °C), slow sorption kinetics and poor reversibility. Currently, the general research on the use ...
In this study, pencil graphite electrode was modified using conductive polypyrrole (Ppy) and grap... more In this study, pencil graphite electrode was modified using conductive polypyrrole (Ppy) and grapheme (GF) nanocomposite for electrochemical determination of insulin. Electrochemical behavior of insulin on PGE was investigated using cyclic voltammetric (CV) and differential pulse voltammetric (DPV) and chronoaprometry (CA) methods. Several effective parameters including pH, concentration, and scan rate for electrochemical modification of electrode were investigated and optimal conditions were proposed. Kinetics of the oxidation reaction and diffusion coefficient of the sensor was studied. The performed steps allow the measurement of insulin with a linear repeatability curve and appropriate accuracy at a range of 0.225 to 1.235 μM. The limit of detection was obtained at 8.65 nM for insulin. The amount of electron transfer coefficient between modified electrode and insulin was obtained to 0.5 with 0.84~1 number of electrons exchanged during oxidation of insulin. The application of pro...
The K-180 G jet turbine is categorized as turbojet engine. This paper studied and analyzed the pe... more The K-180 G jet turbine is categorized as turbojet engine. This paper studied and analyzed the performance of K-180 G micro jet turbine for Unmanned aerial Vehicle (UAV) at static condition. The project was done to study thrust and temperature behavior with respect to rpm for a turbojet engine using standard kerosene fuel. A theoretical thermodynamic model was derived to understand theoretical aspect behind the test and to ensure the validity of performance measured. Various sensors were integrated to the gas turbine and computed to record the performance parameters such as EGT, thrust, engine rpm and pump power. The engine was tested several times in order to obtain average reading. At maximum RPM, the average thrust recorded was 18.57 kg, the maximum temperature recorded was 523˚C and the maximum pump power was 293 W. The relationship between thrust against RPM and the thrust against pump power is third order polynomial and thrust against EGT is parabolic. The mass flow rate of fuel was obtained from the relationship of the RPM against pump power which is third order polynomial. The thermodynamic theoretical model validated the engine's performance measured with the percentage error between 1 to 30%.
Background Thirty-day hospital readmissions are a quality metric for health care systems. Predict... more Background Thirty-day hospital readmissions are a quality metric for health care systems. Predictive models aim to identify patients likely to readmit to more effectively target preventive strategies. Many risk of readmission models have been developed on retrospective data, but prospective validation of readmission models is rare. To the best of our knowledge, none of these developed models have been evaluated or prospectively validated in a military hospital. Objectives The objectives of this study are to demonstrate the development and prospective validation of machine learning (ML) risk of readmission models to be utilized by clinical staff at a military medical facility and demonstrate the collaboration between the U.S. Department of Defense's integrated health care system and a private company. Methods We evaluated multiple ML algorithms to develop a predictive model for 30-day readmissions using data from a retrospective cohort of all-cause inpatient readmissions at Madig...
In this paper, we consider the power optimization problem in Orthogonal Frequency Division Multip... more In this paper, we consider the power optimization problem in Orthogonal Frequency Division Multiplexing (OFDM)-based relay-enhanced device-to-device (D2D) communication. In a single cell transmission scenario, dualhop communication is assumed in which each D2D user re-uses the spectrum of just one Cellular User (CU). In this work, we formulate a joint optimization scheme under a Decode-and-Forward (DF) relaying protocol to maximize the sum throughput of D2D and cellular networks via power allocation over different sub-carriers. The problem is thus transformed into a standard convex optimization, subject to individual power constraints at different transmitting nodes. We exploit the duality theory to decompose the problem into several sub-problems and use Karush-Kuhn-Tucker (KKT) conditions to solve each sub-problem. We provide simulation results to validate the performance of our proposed scheme.
Carboxymethyl sago pulp (CMSP) with 0.4 DS, viscosity 184 dl/g and molecular weight 76,000 g/mol ... more Carboxymethyl sago pulp (CMSP) with 0.4 DS, viscosity 184 dl/g and molecular weight 76,000 g/mol was synthesized from sago waste. 10 and 20% w/v solutions of CMSP were irradiated at 10-30 kGy to form hydrogels and were characterized by % gel fraction (GF). Irradiation of 20% CMSP using 25 kGy has produced stable hydrogels with the highest % GF and hence loaded with ciprofloxacin HCl. Drug-loaded hydrogels were produced by irradiating the mixture of drug and 20% CMSP solution at 25 kGy. After irradiation, the hydrogels were cut into circular discs with a diameter of 671 mm and evaluated for physicochemical properties as well as drug release kinetics. The ciprofloxacin loading in the disc was 14.7%71 w/w with an entrapment efficiency of 73.5% w/w. The low standard deviation of drug-loaded discs indicated uniform thickness (1.570.3 mm). The unloaded discs were thinner (170.4 mm) and more brittle than the drug-loaded discs. FESEM, FT-IR, XRD, DSC and TGA analysis revealed the absence of polymer-drug interaction and transformation of crystalline to amorphous form of ciprofloxacin in the discs. The disc sustained the drug release in phosphate buffer pH 7.4 over 36 h in a first-order manner. The mechanism of the drug release was found to be swelling controlled diffusion and matrix erosion. The antibacterial effect of ciprofloxacin was retained after irradiation and CMSP disc could be a promising device for ocular drug delivery.
Abstract We report here the synthesis of reduced graphene oxide supported copper nanoparticles (r... more Abstract We report here the synthesis of reduced graphene oxide supported copper nanoparticles (rGO/Cu NPs) from copper (II) sulfate pentahydrate and graphite precursors using a simple protocol. The catalyst was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Brunauer–Emmett–Teller (BET) and energy dispersive X-ray spectroscopy (EDS). The rGO/Cu NPs is proved to be a useful heterogeneous catalyst in Cu-catalyzed formamidation and amination of arylboronic acids. The catalyst can be recovered by simple filtration from the reaction mixture and reused several times without significant loss of catalytic activity.
Molecular dynamics simulations have been applied to investigate thermal properties of Ag and Au. ... more Molecular dynamics simulations have been applied to investigate thermal properties of Ag and Au. Semi-empirical potentials, based on the embedded atom method (EAM) have been employed to calculate lattice parameter, energy per atom, mean square displacements and radial distribution function for the two metals. Thermal properties like specific heat, thermal coefficient of linear expansion and melting temperature are deduced from the calculated parameters. Results are found to compare well with the experimental results.
International Journal of Scientific and Research Publications (IJSRP)
To boost the performance of solar cells (SCs), four non-fullerene π-conjugated acceptor compounds... more To boost the performance of solar cells (SCs), four non-fullerene π-conjugated acceptor compounds, including iodosubstituted (SubPcs) subphthalocyanines is π-conjugated rigid tetrahedral geometry aromatic molecule composed of three units combined around a boron atom bearing a macrocycle core with a perpendicular axial ligand. The C3 designed molecule shows the optoelectronic analysis is better than the reference molecule R due to absorption range because its range found to be nearer the reference compound as well as the absorption occur at 645.53 nm, 519 nm respectively. Examination of the frontier molecular orbital
Composite materials and their applications constitute a hot field of research nowadays due to the... more Composite materials and their applications constitute a hot field of research nowadays due to the fact that they comprise a combination of the unique properties of each component of which they consist. Very often, they exhibit better performance and properties compared to their combined building blocks. Graphene oxide (GO), as the most widely used derivative of graphene, has attracted widespread attention because of its excellent properties. Abundant oxygen-containing functional groups on GO can provide various reactive sites for chemical modification or functionalization of GO, which in turn can be used to develop novel GO-based composites. This review outlines the most recent advances in the field of novel dyes and pigments encompassing GO as a key ingredient or as an important cofactor. The interactions of graphene with other materials/compounds are highlighted. The special structure and unique properties of GO have a great effect on the performance of fabricated hybrid dyes and ...
International Journal for Research in Applied Science and Engineering Technology, 2020
The functionalization of phosphorene and its electronic interactions with the conductive polymer ... more The functionalization of phosphorene and its electronic interactions with the conductive polymer had been examined in this research. Edge functionalization of phosphorene is very important because it has been found to be more reactive at the edge of a phosphorene when compared to covalently bonded phosphorus in the zigzag direction. We have described the interaction of phosphorene with polythiophene, a conducting polymer to study its optoelectronic properties and the substituent effect of polythiophene on electronic properties. For the edge functionalization of phosphorene interacting with polythiophene P-X-PT. we select four different kinds of moieties, where (COOH, NH2 and OH). For polythiophene polymer we were considering with number of state six. Density functional theory (DFT) approach using MPW1PW91 at the theory level 6-31(G) on Gaussian 09 package was use for optical properties. The transfer of charge between molecules, frontier molecular orbitals (FMOs), state density (DOS), transition density matrix (TDM) and binding energy is carried out for the determination of opto-electronics properties and UV / Vis spectrum.
Page 1. Inelastic scattering of 14.8 MeV neutrons from deuterons This article has been downloaded... more Page 1. Inelastic scattering of 14.8 MeV neutrons from deuterons This article has been downloaded from IOPscience. Please scroll down to see the full text article. 1979 J. Phys. G: Nucl. Phys. 5 1107 (http://iopscience.iop.org/0305-4616/5/8/014) ...
The result of a search at the LHC for heavy stable charged particles produced in pp collisions at... more The result of a search at the LHC for heavy stable charged particles produced in pp collisions at √ s = 7 TeV is described. The data sample was collected with the CMS detector and corresponds to an integrated luminosity of 3.1 pb −1. Momentum and ionization-energy-loss measurements in the inner tracker detector are used to identify tracks compatible with heavy slow-moving particles. Additionally, tracks passing muon identification requirements are also analyzed for the same signature. In each case, no candidate passes the selection, with an expected background of less than 0.1 events. A lower limit at the 95% confidence level on the mass of a stable gluino is set at 398 GeV/c 2 , using a conventional model of nuclear interactions that allows charged hadrons containing this particle to reach the muon detectors. A lower limit of 311 GeV/c 2 is also set for a stable gluino in a conservative scenario of complete charge suppression, where any hadron containing this particle becomes neutral before reaching the muon detectors.
A search for narrow resonances at high mass in the dimuon and dielectron channels has been perfor... more A search for narrow resonances at high mass in the dimuon and dielectron channels has been performed by the CMS experiment at the CERN LHC, using pp collision data recorded at √ s = 7 TeV. The event samples correspond to integrated luminosities of 40 pb −1 in the dimuon channel and 35 pb −1 in the dielectron channel. Heavy dilepton resonances are predicted in theoretical models with extra gauge bosons (Z) or as Kaluza-Klein graviton excitations (G KK) in the Randall-Sundrum model. Upper limits on the inclusive cross section of Z (G KK) → + − relative to Z → + − are presented. These limits exclude at 95% confidence level a Z with standard-modellike couplings below 1140 GeV, the superstring-inspired Z ψ below 887 GeV, and, for values of the coupling parameter k/M Pl of 0.05 (0.1), Kaluza-Klein gravitons below 855 (1079) GeV.
Yields of prompt and non-prompt J/ψ, as well as $ \Upsilon $ (1S) mesons, are measured by the CMS... more Yields of prompt and non-prompt J/ψ, as well as $ \Upsilon $ (1S) mesons, are measured by the CMS experiment via their μ + μ − decays in PbPb and pp collisions at $ \sqrt {{{s_{\text{NN}}}}} = 2.76 $ TeV for quarkonium rapidity |y| < 2.4. Differential cross sections and nuclear modification factors are reported as functions of y and transverse momentum p T, as well as collision centrality. For prompt J/ψ with relatively high p T (6.5 < p T < 30 GeV/c), a strong, centrality-dependent suppression is observed in PbPb collisions, compared to the yield in pp collisions scaled by the number of inelastic nucleon-nucleon collisions. In the same kinematic range, a suppression of non-prompt J/ψ, which is sensitive to the in-medium b-quark energy loss, is measured for the first time. Also the low-p T $ \Upsilon $ (1S) mesons are suppressed in PbPb collisions.
Plastic waste accumulation has been recognized as one of the most critical challenges of modern s... more Plastic waste accumulation has been recognized as one of the most critical challenges of modern societies worldwide. Traditional waste management practices include open burning, landfilling, and incineration, resulting in greenhouse gas emissions and economic loss. In contrast, emerging techniques for plastic waste management include microwave-assisted conversion, plasma-assisted conversion, supercritical water conversion, and photo reforming to obtain high-value products. Problems with poorly managed plastic waste are particularly serious in developing countries. This review article examines the emerging strategies and production of various high-value-added products from plastic waste. Additionally, the uses of plastic waste in different sectors, such as construction, fuel production, wastewater treatment, electrode materials, carbonaceous nanomaterials, and other high-value-added products are reviewed. It has been observed that there is a pressing need to utilize plastic waste for...
Proceedings of the AAAI Conference on Artificial Intelligence
Death is an inevitable part of life and while it cannot be delayed indefinitely it is possible to... more Death is an inevitable part of life and while it cannot be delayed indefinitely it is possible to predict with some certainty when the health of a person is going to deteriorate. In this paper, we predict risk of mortality for patients from two large hospital systems in the Pacific Northwest. Using medical claims and electronic medical records (EMR) data we greatly improve prediction for risk of mortality and explore machine learning models with explanations for end of life predictions. The insights that are derived from the predictions can then be used to improve the quality of patient care towards the end of life.
Recently, hydrogen (H2) has emerged as a superior energy carrier that has the potential to replac... more Recently, hydrogen (H2) has emerged as a superior energy carrier that has the potential to replace fossil fuel. However, storing H2 under safe and operable conditions is still a challenging process due to the current commercial method, i.e., H2 storage in a pressurised and liquified state, which requires extremely high pressure and extremely low temperature. To solve this problem, research on solid-state H2 storage materials is being actively conducted. Among the solid-state H2 storage materials, borohydride is a potential candidate for H2 storage owing to its high gravimetric capacity (majority borohydride materials release >10 wt% of H2). Mg(BH4)2, which is included in the borohydride family, shows promise as a good H2 storage material owing to its high gravimetric capacity (14.9 wt%). However, its practical application is hindered by high thermal decomposition temperature (above 300 °C), slow sorption kinetics and poor reversibility. Currently, the general research on the use ...
In this study, pencil graphite electrode was modified using conductive polypyrrole (Ppy) and grap... more In this study, pencil graphite electrode was modified using conductive polypyrrole (Ppy) and grapheme (GF) nanocomposite for electrochemical determination of insulin. Electrochemical behavior of insulin on PGE was investigated using cyclic voltammetric (CV) and differential pulse voltammetric (DPV) and chronoaprometry (CA) methods. Several effective parameters including pH, concentration, and scan rate for electrochemical modification of electrode were investigated and optimal conditions were proposed. Kinetics of the oxidation reaction and diffusion coefficient of the sensor was studied. The performed steps allow the measurement of insulin with a linear repeatability curve and appropriate accuracy at a range of 0.225 to 1.235 μM. The limit of detection was obtained at 8.65 nM for insulin. The amount of electron transfer coefficient between modified electrode and insulin was obtained to 0.5 with 0.84~1 number of electrons exchanged during oxidation of insulin. The application of pro...
The K-180 G jet turbine is categorized as turbojet engine. This paper studied and analyzed the pe... more The K-180 G jet turbine is categorized as turbojet engine. This paper studied and analyzed the performance of K-180 G micro jet turbine for Unmanned aerial Vehicle (UAV) at static condition. The project was done to study thrust and temperature behavior with respect to rpm for a turbojet engine using standard kerosene fuel. A theoretical thermodynamic model was derived to understand theoretical aspect behind the test and to ensure the validity of performance measured. Various sensors were integrated to the gas turbine and computed to record the performance parameters such as EGT, thrust, engine rpm and pump power. The engine was tested several times in order to obtain average reading. At maximum RPM, the average thrust recorded was 18.57 kg, the maximum temperature recorded was 523˚C and the maximum pump power was 293 W. The relationship between thrust against RPM and the thrust against pump power is third order polynomial and thrust against EGT is parabolic. The mass flow rate of fuel was obtained from the relationship of the RPM against pump power which is third order polynomial. The thermodynamic theoretical model validated the engine's performance measured with the percentage error between 1 to 30%.
Background Thirty-day hospital readmissions are a quality metric for health care systems. Predict... more Background Thirty-day hospital readmissions are a quality metric for health care systems. Predictive models aim to identify patients likely to readmit to more effectively target preventive strategies. Many risk of readmission models have been developed on retrospective data, but prospective validation of readmission models is rare. To the best of our knowledge, none of these developed models have been evaluated or prospectively validated in a military hospital. Objectives The objectives of this study are to demonstrate the development and prospective validation of machine learning (ML) risk of readmission models to be utilized by clinical staff at a military medical facility and demonstrate the collaboration between the U.S. Department of Defense's integrated health care system and a private company. Methods We evaluated multiple ML algorithms to develop a predictive model for 30-day readmissions using data from a retrospective cohort of all-cause inpatient readmissions at Madig...
In this paper, we consider the power optimization problem in Orthogonal Frequency Division Multip... more In this paper, we consider the power optimization problem in Orthogonal Frequency Division Multiplexing (OFDM)-based relay-enhanced device-to-device (D2D) communication. In a single cell transmission scenario, dualhop communication is assumed in which each D2D user re-uses the spectrum of just one Cellular User (CU). In this work, we formulate a joint optimization scheme under a Decode-and-Forward (DF) relaying protocol to maximize the sum throughput of D2D and cellular networks via power allocation over different sub-carriers. The problem is thus transformed into a standard convex optimization, subject to individual power constraints at different transmitting nodes. We exploit the duality theory to decompose the problem into several sub-problems and use Karush-Kuhn-Tucker (KKT) conditions to solve each sub-problem. We provide simulation results to validate the performance of our proposed scheme.
Carboxymethyl sago pulp (CMSP) with 0.4 DS, viscosity 184 dl/g and molecular weight 76,000 g/mol ... more Carboxymethyl sago pulp (CMSP) with 0.4 DS, viscosity 184 dl/g and molecular weight 76,000 g/mol was synthesized from sago waste. 10 and 20% w/v solutions of CMSP were irradiated at 10-30 kGy to form hydrogels and were characterized by % gel fraction (GF). Irradiation of 20% CMSP using 25 kGy has produced stable hydrogels with the highest % GF and hence loaded with ciprofloxacin HCl. Drug-loaded hydrogels were produced by irradiating the mixture of drug and 20% CMSP solution at 25 kGy. After irradiation, the hydrogels were cut into circular discs with a diameter of 671 mm and evaluated for physicochemical properties as well as drug release kinetics. The ciprofloxacin loading in the disc was 14.7%71 w/w with an entrapment efficiency of 73.5% w/w. The low standard deviation of drug-loaded discs indicated uniform thickness (1.570.3 mm). The unloaded discs were thinner (170.4 mm) and more brittle than the drug-loaded discs. FESEM, FT-IR, XRD, DSC and TGA analysis revealed the absence of polymer-drug interaction and transformation of crystalline to amorphous form of ciprofloxacin in the discs. The disc sustained the drug release in phosphate buffer pH 7.4 over 36 h in a first-order manner. The mechanism of the drug release was found to be swelling controlled diffusion and matrix erosion. The antibacterial effect of ciprofloxacin was retained after irradiation and CMSP disc could be a promising device for ocular drug delivery.
Abstract We report here the synthesis of reduced graphene oxide supported copper nanoparticles (r... more Abstract We report here the synthesis of reduced graphene oxide supported copper nanoparticles (rGO/Cu NPs) from copper (II) sulfate pentahydrate and graphite precursors using a simple protocol. The catalyst was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Brunauer–Emmett–Teller (BET) and energy dispersive X-ray spectroscopy (EDS). The rGO/Cu NPs is proved to be a useful heterogeneous catalyst in Cu-catalyzed formamidation and amination of arylboronic acids. The catalyst can be recovered by simple filtration from the reaction mixture and reused several times without significant loss of catalytic activity.
Molecular dynamics simulations have been applied to investigate thermal properties of Ag and Au. ... more Molecular dynamics simulations have been applied to investigate thermal properties of Ag and Au. Semi-empirical potentials, based on the embedded atom method (EAM) have been employed to calculate lattice parameter, energy per atom, mean square displacements and radial distribution function for the two metals. Thermal properties like specific heat, thermal coefficient of linear expansion and melting temperature are deduced from the calculated parameters. Results are found to compare well with the experimental results.
International Journal of Scientific and Research Publications (IJSRP)
To boost the performance of solar cells (SCs), four non-fullerene π-conjugated acceptor compounds... more To boost the performance of solar cells (SCs), four non-fullerene π-conjugated acceptor compounds, including iodosubstituted (SubPcs) subphthalocyanines is π-conjugated rigid tetrahedral geometry aromatic molecule composed of three units combined around a boron atom bearing a macrocycle core with a perpendicular axial ligand. The C3 designed molecule shows the optoelectronic analysis is better than the reference molecule R due to absorption range because its range found to be nearer the reference compound as well as the absorption occur at 645.53 nm, 519 nm respectively. Examination of the frontier molecular orbital
Composite materials and their applications constitute a hot field of research nowadays due to the... more Composite materials and their applications constitute a hot field of research nowadays due to the fact that they comprise a combination of the unique properties of each component of which they consist. Very often, they exhibit better performance and properties compared to their combined building blocks. Graphene oxide (GO), as the most widely used derivative of graphene, has attracted widespread attention because of its excellent properties. Abundant oxygen-containing functional groups on GO can provide various reactive sites for chemical modification or functionalization of GO, which in turn can be used to develop novel GO-based composites. This review outlines the most recent advances in the field of novel dyes and pigments encompassing GO as a key ingredient or as an important cofactor. The interactions of graphene with other materials/compounds are highlighted. The special structure and unique properties of GO have a great effect on the performance of fabricated hybrid dyes and ...
International Journal for Research in Applied Science and Engineering Technology, 2020
The functionalization of phosphorene and its electronic interactions with the conductive polymer ... more The functionalization of phosphorene and its electronic interactions with the conductive polymer had been examined in this research. Edge functionalization of phosphorene is very important because it has been found to be more reactive at the edge of a phosphorene when compared to covalently bonded phosphorus in the zigzag direction. We have described the interaction of phosphorene with polythiophene, a conducting polymer to study its optoelectronic properties and the substituent effect of polythiophene on electronic properties. For the edge functionalization of phosphorene interacting with polythiophene P-X-PT. we select four different kinds of moieties, where (COOH, NH2 and OH). For polythiophene polymer we were considering with number of state six. Density functional theory (DFT) approach using MPW1PW91 at the theory level 6-31(G) on Gaussian 09 package was use for optical properties. The transfer of charge between molecules, frontier molecular orbitals (FMOs), state density (DOS), transition density matrix (TDM) and binding energy is carried out for the determination of opto-electronics properties and UV / Vis spectrum.
Page 1. Inelastic scattering of 14.8 MeV neutrons from deuterons This article has been downloaded... more Page 1. Inelastic scattering of 14.8 MeV neutrons from deuterons This article has been downloaded from IOPscience. Please scroll down to see the full text article. 1979 J. Phys. G: Nucl. Phys. 5 1107 (http://iopscience.iop.org/0305-4616/5/8/014) ...
The result of a search at the LHC for heavy stable charged particles produced in pp collisions at... more The result of a search at the LHC for heavy stable charged particles produced in pp collisions at √ s = 7 TeV is described. The data sample was collected with the CMS detector and corresponds to an integrated luminosity of 3.1 pb −1. Momentum and ionization-energy-loss measurements in the inner tracker detector are used to identify tracks compatible with heavy slow-moving particles. Additionally, tracks passing muon identification requirements are also analyzed for the same signature. In each case, no candidate passes the selection, with an expected background of less than 0.1 events. A lower limit at the 95% confidence level on the mass of a stable gluino is set at 398 GeV/c 2 , using a conventional model of nuclear interactions that allows charged hadrons containing this particle to reach the muon detectors. A lower limit of 311 GeV/c 2 is also set for a stable gluino in a conservative scenario of complete charge suppression, where any hadron containing this particle becomes neutral before reaching the muon detectors.
A search for narrow resonances at high mass in the dimuon and dielectron channels has been perfor... more A search for narrow resonances at high mass in the dimuon and dielectron channels has been performed by the CMS experiment at the CERN LHC, using pp collision data recorded at √ s = 7 TeV. The event samples correspond to integrated luminosities of 40 pb −1 in the dimuon channel and 35 pb −1 in the dielectron channel. Heavy dilepton resonances are predicted in theoretical models with extra gauge bosons (Z) or as Kaluza-Klein graviton excitations (G KK) in the Randall-Sundrum model. Upper limits on the inclusive cross section of Z (G KK) → + − relative to Z → + − are presented. These limits exclude at 95% confidence level a Z with standard-modellike couplings below 1140 GeV, the superstring-inspired Z ψ below 887 GeV, and, for values of the coupling parameter k/M Pl of 0.05 (0.1), Kaluza-Klein gravitons below 855 (1079) GeV.
Yields of prompt and non-prompt J/ψ, as well as $ \Upsilon $ (1S) mesons, are measured by the CMS... more Yields of prompt and non-prompt J/ψ, as well as $ \Upsilon $ (1S) mesons, are measured by the CMS experiment via their μ + μ − decays in PbPb and pp collisions at $ \sqrt {{{s_{\text{NN}}}}} = 2.76 $ TeV for quarkonium rapidity |y| < 2.4. Differential cross sections and nuclear modification factors are reported as functions of y and transverse momentum p T, as well as collision centrality. For prompt J/ψ with relatively high p T (6.5 < p T < 30 GeV/c), a strong, centrality-dependent suppression is observed in PbPb collisions, compared to the yield in pp collisions scaled by the number of inelastic nucleon-nucleon collisions. In the same kinematic range, a suppression of non-prompt J/ψ, which is sensitive to the in-medium b-quark energy loss, is measured for the first time. Also the low-p T $ \Upsilon $ (1S) mesons are suppressed in PbPb collisions.
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Papers by Muhammad Ahmad