Employing Biot’s theory of wave propagation in liquid saturated porous media,the effect of rotation and magnetic field on wave propagation in a hollow poroelastic circular of infinite extent is investigated.An exact ...Employing Biot’s theory of wave propagation in liquid saturated porous media,the effect of rotation and magnetic field on wave propagation in a hollow poroelastic circular of infinite extent is investigated.An exact closed form solution is presented.General frequency equations for propagation of poroelastic cylinder are obtained when the boundaries are stress free.The frequencies are calculated for poroelastic cylinder for different values of magnetic field and rotation.Numerical results are given and illustrated graphically.The results indicate that the effect of rotation,and magnetic field are very pronounced.Such a model would be useful in large-scale parametric studies of mechanical response.展开更多
This article is aimed at describing the way rotation and magnetic field affect the propagation of waves in an infinite poroelastic cylindrical bone.It offers a solution with an exact closed form.The authors got and ex...This article is aimed at describing the way rotation and magnetic field affect the propagation of waves in an infinite poroelastic cylindrical bone.It offers a solution with an exact closed form.The authors got and examined numerically the general frequency equation for poroelastic bone.Moreover,they calculated the frequencies of poroelastic bone for different values of the magnetic field and rotation.Unlike the results of previous studies,the authors noticed little frequency dispersion in the wet bone.The proposed model will be applicable to wide-range parametric projects of bone mechanical response.Examining the vibration of surface waves in rotating cylindrical,long human bones under the magnetic field can have an impact.The findings of the study are offered in graphs.Then,a comparison with the results of the literature is conducted to show the effect of rotation and magnetic field on the wave propagation phenomenon.It is worth noting that the results of the study highly match those of the literature.展开更多
Spectral luminescent analysis of single cells and cellular systems enable us to reveal the initial changes of intracellular metabolism that can followed by human diseases or failure in biocenosis. Two cytodiagnostic s...Spectral luminescent analysis of single cells and cellular systems enable us to reveal the initial changes of intracellular metabolism that can followed by human diseases or failure in biocenosis. Two cytodiagnostic systems of de-vices and techniques have been developed: 1) Microspectrofluorimeters registering the fluo-rescent spectra of individual cells or intracellular organelles used for fundamental investigations of cell reactions and for discovering and studying new dimensionless fluorescent characteristic parameters reflecting the biochemical or physiological properties of the cells;2) Double- and multi-wave microfluorimeters for rapid registration of fluorescent characteristic para- meters for many cells to obtain statistical information about cell population. These techni- ques are useful especially in medical and eco-logical investigations.展开更多
文摘Employing Biot’s theory of wave propagation in liquid saturated porous media,the effect of rotation and magnetic field on wave propagation in a hollow poroelastic circular of infinite extent is investigated.An exact closed form solution is presented.General frequency equations for propagation of poroelastic cylinder are obtained when the boundaries are stress free.The frequencies are calculated for poroelastic cylinder for different values of magnetic field and rotation.Numerical results are given and illustrated graphically.The results indicate that the effect of rotation,and magnetic field are very pronounced.Such a model would be useful in large-scale parametric studies of mechanical response.
基金funded by the Deanship of Scientific Research(DSR),King Abdulaziz University,Jeddah,under grant No.D-668-305-1441.
文摘This article is aimed at describing the way rotation and magnetic field affect the propagation of waves in an infinite poroelastic cylindrical bone.It offers a solution with an exact closed form.The authors got and examined numerically the general frequency equation for poroelastic bone.Moreover,they calculated the frequencies of poroelastic bone for different values of the magnetic field and rotation.Unlike the results of previous studies,the authors noticed little frequency dispersion in the wet bone.The proposed model will be applicable to wide-range parametric projects of bone mechanical response.Examining the vibration of surface waves in rotating cylindrical,long human bones under the magnetic field can have an impact.The findings of the study are offered in graphs.Then,a comparison with the results of the literature is conducted to show the effect of rotation and magnetic field on the wave propagation phenomenon.It is worth noting that the results of the study highly match those of the literature.
文摘Spectral luminescent analysis of single cells and cellular systems enable us to reveal the initial changes of intracellular metabolism that can followed by human diseases or failure in biocenosis. Two cytodiagnostic systems of de-vices and techniques have been developed: 1) Microspectrofluorimeters registering the fluo-rescent spectra of individual cells or intracellular organelles used for fundamental investigations of cell reactions and for discovering and studying new dimensionless fluorescent characteristic parameters reflecting the biochemical or physiological properties of the cells;2) Double- and multi-wave microfluorimeters for rapid registration of fluorescent characteristic para- meters for many cells to obtain statistical information about cell population. These techni- ques are useful especially in medical and eco-logical investigations.
