Screening for colonization with methicillin resistant Staphylococcus aureas (MRSA) is a key aspect of infection control to limit the nosocomial spread of this organism. Current methods for the detection of MRSA in cli...Screening for colonization with methicillin resistant Staphylococcus aureas (MRSA) is a key aspect of infection control to limit the nosocomial spread of this organism. Current methods for the detection of MRSA in clinical microbiology laboratories using conventional methods is time consuming. In this research we are trying to evaluate the use of real time PCR for the detection of MRSA. The PCR assay was evaluated in clinical isolates of MRSA (n = 45) and methicillin susceptible Staphylococcus aureas MSSA (n = 10). The diagnostic values of the assay showed high sensitivity and specificity. This real-time PCR assay proved to be a fast, sensitive and specific tool for MRSA detection in a routine microbiological laboratory. Real-time PCR now is available in all laboratories so its use in identification of MRSA will help in shortening the period for MRSA identification and will help in the success of infection control programs in hospitals.展开更多
The theory of two-temperature generalized thermoelasticity is used to solve the problem of heating a semi-infinite rod made of a piezoelectric ceramic material within the framework of generalized thermopiezoelasticity...The theory of two-temperature generalized thermoelasticity is used to solve the problem of heating a semi-infinite rod made of a piezoelectric ceramic material within the framework of generalized thermopiezoelasticity theory by supplying the rod a certain amount of heat uniformly distributed over a finite time period to the finite end of the rod. The Laplace transform formalism is used to solve the proposed model. Inverse Laplace transforms are computed numerically using a method based on Fourier expansion techniques. The physical parameters (i.e., conductive temperature, dynamical temperature, stress, strain, and displacement distributions) are investigated graphically.展开更多
This article attempts to establish a mathematical epidemic model for the outbreak of the new COVID-19 coronavirus.A new consideration for evaluating and controlling the COVID-19 outbreak will be constructed based on t...This article attempts to establish a mathematical epidemic model for the outbreak of the new COVID-19 coronavirus.A new consideration for evaluating and controlling the COVID-19 outbreak will be constructed based on the SEIQR Pandemic Model.In this paper,the real data of COVID-19 spread in Saudi Arabia has been used for the mathematical model and dynamic analyses.Including the new reproductive number and detailed stability analysis,the dynamics of the proposed SEIQR model have been applied.The local sensitivity of the reproduction number has been analyzed.The domain of solution and equilibrium based on the SEIQR model have been proved using a Jacobian linearization process.The state of equilibrium and its significance have been proved,and a study of the integrity of the disease-free equilibrium has been carried out.The Lyapunov stability theorem demonstrated the global stability of the current model equilibrium.The SEIQR model has been numerically validated and projected by contrasting the results from the SEIQR model with the actual COVID-19 spread data in Saudi Arabia.The result of this paper shows that the SEIQR model is a model that is effective in analyzing epidemic spread,such as COVID-19.At the end of the study,we have implemented the protocol which helped the Saudi population to stop the spread of COVID-19 rapidly.展开更多
文摘Screening for colonization with methicillin resistant Staphylococcus aureas (MRSA) is a key aspect of infection control to limit the nosocomial spread of this organism. Current methods for the detection of MRSA in clinical microbiology laboratories using conventional methods is time consuming. In this research we are trying to evaluate the use of real time PCR for the detection of MRSA. The PCR assay was evaluated in clinical isolates of MRSA (n = 45) and methicillin susceptible Staphylococcus aureas MSSA (n = 10). The diagnostic values of the assay showed high sensitivity and specificity. This real-time PCR assay proved to be a fast, sensitive and specific tool for MRSA detection in a routine microbiological laboratory. Real-time PCR now is available in all laboratories so its use in identification of MRSA will help in shortening the period for MRSA identification and will help in the success of infection control programs in hospitals.
文摘The theory of two-temperature generalized thermoelasticity is used to solve the problem of heating a semi-infinite rod made of a piezoelectric ceramic material within the framework of generalized thermopiezoelasticity theory by supplying the rod a certain amount of heat uniformly distributed over a finite time period to the finite end of the rod. The Laplace transform formalism is used to solve the proposed model. Inverse Laplace transforms are computed numerically using a method based on Fourier expansion techniques. The physical parameters (i.e., conductive temperature, dynamical temperature, stress, strain, and displacement distributions) are investigated graphically.
基金The authors are grateful and thank the Research and Development Grants Program for National Research Institutions and Centres(GRANTS),Target Research Program,Infectious Diseases Research Grant Program,King Abdulaziz City for Science and Technology(KACST)Kingdom of Saudi Arabia,for funding this project and this work with grant number(5-20-01-007-0002).
文摘This article attempts to establish a mathematical epidemic model for the outbreak of the new COVID-19 coronavirus.A new consideration for evaluating and controlling the COVID-19 outbreak will be constructed based on the SEIQR Pandemic Model.In this paper,the real data of COVID-19 spread in Saudi Arabia has been used for the mathematical model and dynamic analyses.Including the new reproductive number and detailed stability analysis,the dynamics of the proposed SEIQR model have been applied.The local sensitivity of the reproduction number has been analyzed.The domain of solution and equilibrium based on the SEIQR model have been proved using a Jacobian linearization process.The state of equilibrium and its significance have been proved,and a study of the integrity of the disease-free equilibrium has been carried out.The Lyapunov stability theorem demonstrated the global stability of the current model equilibrium.The SEIQR model has been numerically validated and projected by contrasting the results from the SEIQR model with the actual COVID-19 spread data in Saudi Arabia.The result of this paper shows that the SEIQR model is a model that is effective in analyzing epidemic spread,such as COVID-19.At the end of the study,we have implemented the protocol which helped the Saudi population to stop the spread of COVID-19 rapidly.
