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您的检索式：作者名="D.Mohammed"
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| 1 | Pancolonic spatiotemporal mapping reveals regional deficiencies in, and disorganization of colonic propagating pressure waves in severe constipation显示文摘 | P. G.Dinning N.Zarate L. M.Hunt S. E.Fuentealba S. D.Mohammed M. M.Szczesniak D. Z.Lubowski S. L.Preston P. D.Fairclough P. J.Lunniss S. M.Scott I. J.Cook | 2010 | Neurogastroenterology & Motility2010，，12： | 1 |
| 2 | Investigating the influence of gamma ray energies and steel fiber on attenuation properties of reactive powder concrete显示文摘The effect of gamma ray energies and volume ratio of micro steel fiber(1 and 1.5%) on attenuation properties of reactive powder concrete(70 MPa compressive strength) was investigated. Different characteristics have been considered such as linear attenuation coefficient,mass attenuation coefficient, and half-value thickness.Sodium iodide crystal with a gamma ray spectrometer and collimated beam of gamma ray has been implemented to perform the experimental test. Three sources(Cs-137, Co-60, and Bi-207) with energies of(0.662, 1.17 1.33, 0.569,and 1.063) MeV were adopted in the test. The results obtained indicated that mass attenuation coefficient is proportioned inversely with gamma ray energies and directly with a volume ratio of micro steel fiber. The linear attenuation coefficient and half-value thickness of the tested samples have been calculated and discussed. The obtained results showed that increasing the volume ratio of steel fiber has modified the adequacy of the reactive powder concrete as a shielding element since it increases the density and reduces the half-value thickness. | Shatha D.Mohammed Wasan Z.Majeed Nesreen B.Naji Nada Mahdi Fawzi | 2017 | Nuclear Science and Techniques2017，28，10： | 0 |
| 3 | Mathematical modeling and analysis of schistosomiasis transmission dynamics显示文摘Schistosomiasis is a parasitic disease from the family of Schistosomatidae and genus Schistosoma,which is caused by blood flukes.The disease is endemic in many countries and still a serious threat to global public health and development.In this paper,a new deterministic model is designed and analyzed qualitatively to explore the dynamics of schistosomiasis transmission in human,cattle and snail populations.Results from our mathematical analysis show that the model has a disease-free equilibrium(DFE)which is locally asymptotically stable(LAS)whenever a particular epidemiological threshold quantity,also known as basic reproduction number(R0)is less than unity.Further analysis shows that the model has a unique endemic equilibrium(EE)which is globally asymptotically stable whenever R0>1 and unstable when R0<1.Furthermore,we adopt partial rank correlation coefficient for sensitivity analysis to reveal the most important parameters for effective control and mitigation of schistosomiasis disease in a community.Finally,we obtain some numerical results by simulating the entire dynamics of the model,which show that the infections in the compartments of each population decrease with respect to time.This further indicates that avoiding contact with infected human,cattle or infested water is vital to prevent the spread of schistosomiasis disease infection. | Umar T.Mustapha Salihu S.Musa Muhammad A.Lawan Aliyu Abba Evren Hincal Musa D.Mohammed Bashir D.Garba Rabiu B.Yunus Shehu A.Adamu Daihai He | 2021 | International Journal of Modeling, Simulation, and Scientific Computing2021，12，4： | 0 |
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