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  1. AU="T Oni"
  2. AU="Diego R. Pérez-Salicrup"
  3. AU="Verhaaren, Benjamin F J"
  4. AU="Gamoudi, Gamoudi Amor"
  5. AU="Fonseca, Barbara F."
  6. AU="Rubio García, Rafael"
  7. AU="Jiménez-Solano, A"
  8. AU=Mai Huynh Kim
  9. AU=Ellis R J
  10. AU="Carvalho, Aline Carla Araújo"
  11. AU=Gleeson Sarah
  12. AU="Lozier, Alan P."
  13. AU="Perrin, Elodie"
  14. AU="Chung, Haniee"
  15. AU="Jendernalik, Kamila"
  16. AU="Naveira, Horacio F"
  17. AU="Heyliger, Jamie"
  18. AU="García-Fernández, Ciara"
  19. AU="Lee, Mi-Ock"
  20. AU="Pouraliakbar, Hamidreza"
  21. AU="Raina, Hema"
  22. AU="Rosenbaum, David P"
  23. AU="Paulus, Markus"
  24. AU="Nguyen, David Truong"
  25. AU="Khazanchi, Rakesh Kumar"
  26. AU="Agrò, Felice E"
  27. AU="Bücker, Bettina"
  28. AU="Steussy, Bryan W"

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  1. Artikel ; Online: Propagation of neuronal signals in intact and injured peripheral nerves

    O.T. Oni / J.M. Starobin

    Informatics in Medicine Unlocked, Vol 39, Iss , Pp 101279- (2023)

    The role of nonlinear diffusion of transmembrane potential

    2023  

    Abstract: We present results of a computational study of the influence of nonlinear diffusion on propagation of electrical excitation generated in normal and injured peripheral nerves (PN) using a one-dimensional Fitzhugh-Nagumo (FN) model. Changes in action ... ...

    Abstract We present results of a computational study of the influence of nonlinear diffusion on propagation of electrical excitation generated in normal and injured peripheral nerves (PN) using a one-dimensional Fitzhugh-Nagumo (FN) model. Changes in action potential duration (APD) and repolarization intervals (RI) were observed based upon modification of the FN model. Namely, the model has been altered by adding an additional power function type nonlinear diffusion term which accounted for substantial intra-extracellular charge balance changes developing during action potential formation in small peripheral nerves. It was found that changes in magnitude of nonlinear diffusion coefficient result in oscillations of APD and RI in both normal and injured PNs with partially reduced conductivity. It was also found that these oscillations in injured PNs had markedly higher amplitudes dependent on the PN's length as well as on the width of its injured part. Results of our study may be useful in improving of monitoring of peripheral nerve growth and adjusting propagation of excitation to enhance impaired connectivity in injured peripheral nerves.
    Schlagwörter Reaction-diffusion model ; Nonlinear diffusion ; Peripheral nerves ; Action potential ; Computer applications to medicine. Medical informatics ; R858-859.7
    Sprache Englisch
    Erscheinungsdatum 2023-01-01T00:00:00Z
    Verlag Elsevier
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  2. Artikel ; Online: Standardised alcohol screening in primary health care services targeting Aboriginal and Torres Strait Islander peoples in Australia

    M. Mofizul Islam / Helen T. Oni / K. S. Kylie Lee / Noel Hayman / Scott Wilson / Kristie Harrison / Beth Hummerston / Rowena Ivers / Katherine M. Conigrave

    Addiction Science & Clinical Practice, Vol 13, Iss 1, Pp 1-

    2018  Band 11

    Abstract: Abstract Introduction and aims Aboriginal and Torres Strait Islander Community Controlled Health Services (ACCHSs) around Australia have been asked to standardise screening for unhealthy drinking. Accordingly, screening with the 3-item AUDIT-C (Alcohol ... ...

    Abstract Abstract Introduction and aims Aboriginal and Torres Strait Islander Community Controlled Health Services (ACCHSs) around Australia have been asked to standardise screening for unhealthy drinking. Accordingly, screening with the 3-item AUDIT-C (Alcohol Use Disorders Identification Test—Consumption) tool has become a national key performance indicator. Here we provide an overview of suitability of AUDIT-C and other brief alcohol screening tools for use in ACCHSs. Methods All peer-reviewed literature providing original data on validity, acceptability or feasibility of alcohol screening tools among Indigenous Australians was reviewed. Narrative synthesis was used to identify themes and integrate results. Results Three screening tools—full AUDIT, AUDIT-3 (third question of AUDIT) and CAGE (Cut-down, Annoyed, Guilty and Eye-opener) have been validated against other consumption measures, and found to correspond well. Short forms of AUDIT have also been found to compare well with full AUDIT, and were preferred by primary care staff. Help was often required with converting consumption into standard drinks. Researchers commented that AUDIT and its short forms prompted reflection on drinking. Another tool, the Indigenous Risk Impact Screen (IRIS), jointly screens for alcohol, drug and mental health risk, but is relatively long (13 items). IRIS has been validated against dependence scales. AUDIT, IRIS and CAGE have a greater focus on dependence than on hazardous or harmful consumption. Discussion and conclusions Detection of unhealthy drinking before harms occur is a goal of screening, so AUDIT-C offers advantages over tools like IRIS or CAGE which focus on dependence. AUDIT-C’s brevity suits integration with general health screening. Further research is needed on facilitating implementation of systematic alcohol screening into Indigenous primary healthcare.
    Schlagwörter Alcohol screening ; AUDIT ; AUDIT-C ; Indigenous ; IRIS ; Aboriginal and/or Torres Strait Islander ; Medicine (General) ; R5-920 ; Social pathology. Social and public welfare. Criminology ; HV1-9960
    Thema/Rubrik (Code) 670
    Sprache Englisch
    Erscheinungsdatum 2018-03-01T00:00:00Z
    Verlag BMC
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  3. Artikel ; Online: Outcomes after perioperative SARS-CoV-2 infection in patients with proximal femoral fractures

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    BMJ Open, Vol 11, Iss

    an international cohort study

    2021  Band 11

    Schlagwörter Medicine ; R
    Sprache Englisch
    Erscheinungsdatum 2021-11-01T00:00:00Z
    Verlag BMJ Publishing Group
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  4. Artikel ; Online: Flexural motions under accelerating loads of structurally prestressed beams with general boundary conditions

    S. T. Oni / B. Omolofe

    Latin American Journal of Solids and Structures, Vol 7, Iss 3, Pp 285-306

    Abstract: The transverse vibration of a prismatic Rayleigh beam resting on elastic foundation and continuously acted upon by concentrated masses moving with arbitrarily prescribed velocity is studied. A procedure involving generalized finite integral transform, ... ...

    Abstract The transverse vibration of a prismatic Rayleigh beam resting on elastic foundation and continuously acted upon by concentrated masses moving with arbitrarily prescribed velocity is studied. A procedure involving generalized finite integral transform, the use of the expression of the Dirac delta function in series form, a modification of the Struble's asymptotic method and the use of the Fresnel sine and cosine functions is developed to treat this dynamical beam problem and analytical solutions for both the moving force and moving mass model which is valid for all variant of classical boundary conditions are obtained. The proposed analytical procedure is illustrated by examples of some practical engineering interest in which the effects of some important parameters such as boundary conditions, prestressed function, slenderness ratio, mass ratio and elastic foundation are investigated in depth. Resonance phenomenon of the vibrating system is carefully investigated and the condition under which this may occur is clearly scrutinized. The results presented in this paper will form basis for a further research work in this field.
    Schlagwörter Rayleigh beam ; resonance phenomenon ; asymptotic method ; concentrated masses ; transverse vibration ; slenderness ratio ; Technology ; T ; Engineering (General). Civil engineering (General) ; TA1-2040 ; Science ; Q ; Physics ; QC1-999
    Thema/Rubrik (Code) 531
    Sprache Englisch
    Verlag Brazilian Society of Mechanical Sciences and Engineering
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  5. Artikel ; Online: Dynamic response to moving masses of rectangular plates with general boundary conditions and resting on variable winkler foundation

    T. O. Awodola / S. T. Oni

    Latin American Journal of Solids and Structures, Vol 10, Iss 2, Pp 301-322

    Abstract: The dynamic response to moving masses of rectangular plates with general classical boundary conditions and resting on variable Winkler elastic foundation is investigated in this work. The governing fourth order partial differential equation is solved ... ...

    Abstract The dynamic response to moving masses of rectangular plates with general classical boundary conditions and resting on variable Winkler elastic foundation is investigated in this work. The governing fourth order partial differential equation is solved using a technique based on separation of variables, the modified method of Struble and the integral transformations. Numerical results in plotted curves are then presented. The results show that as the value of the rotatory inertia correction factor Ro increases, the response amplitudes of the plate decrease and that, for fixed value of Ro, the displacements of the plate decrease as the foundation modulus Fo increases for the variants of the classical boundary conditions considered. The results also show that for fixed Ro and Fo, the transverse deflections of the rectangular plates under the actions of moving masses are higher than those when only the force effects of the moving load are considered. For the rectangular plate, for the same natural frequency, the critical speed for moving mass problem is smaller than that of the moving force problem for all variants of classical boundary conditions, that is, resonance is reached earlier in moving mass problem than in moving force problem. When Fo and Ro increase, the critical speed increases, hence, risk is reduced.
    Schlagwörter Winkler foundation ; Rotatory Inertia ; Foundation modulus ; Moving Force ; Moving Mass ; Resonance ; Critical speed ; Technology ; T ; Engineering (General). Civil engineering (General) ; TA1-2040 ; Science ; Q ; Physics ; QC1-999
    Thema/Rubrik (Code) 621
    Sprache Englisch
    Verlag Brazilian Society of Mechanical Sciences and Engineering
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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  6. Artikel ; Online: Dynamic behaviour under moving concentrated masses of simply supported rectangular plates resting on variable Winkler elastic foundation

    S. T. Oni / T. O. Awodola

    Latin American Journal of Solids and Structures, Vol 8, Iss 4, Pp 373-392

    Abstract: The response of simply supported rectangular plates carrying moving masses and resting on variable Winkler elastic foundations is investigated in this work. The governing equation of the problem is a fourth order partial differential equation. In order ... ...

    Abstract The response of simply supported rectangular plates carrying moving masses and resting on variable Winkler elastic foundations is investigated in this work. The governing equation of the problem is a fourth order partial differential equation. In order to solve this problem, a technique based on separation of variables is used to reduce the governing fourth order partial differential equations with variable and singular coefficients to a sequence of second order ordinary differential equations. For the solutions of these equations, a modification of the Struble's technique and method of integral transformations are employed. Numerical results in plotted curves are then presented. The results show that response amplitudes of the plate decrease as the value of the rotatory inertia correction factor R0 increases. Furthermore, for fixed value of R0, the displacements of the simply supported rectangular plates resting on variable elastic foundations decrease as the foundation modulus F0 increases. The results further show that, for fixed R0 and F0, the transverse deflections of the rectangular plates under the actions of moving masses are higher than those when only the force effects of the moving load are considered. Therefore, the moving force solution is not a safe approximation to the moving mass problem. Hence, safety is not guaranteed for a design based on the moving force solution. Also, the analyses show that the response amplitudes of both moving force and moving mass problems decrease both with increasing Foundation modulus and with increasing rotatory inertia correction factor. The results again show that the critical speed for the moving mass problem is reached prior to that of the moving force for the simply supported rectangular plates on variable Winkler elastic foundation.
    Schlagwörter rectangular plates ; winkler foundation ; foundation modulus ; rotatory inertia ; resonance ; moving force ; moving mass ; Technology ; T ; Engineering (General). Civil engineering (General) ; TA1-2040 ; Science ; Q ; Physics ; QC1-999
    Thema/Rubrik (Code) 531
    Sprache Englisch
    Verlag Brazilian Society of Mechanical Sciences and Engineering
    Dokumenttyp Artikel ; Online
    Datenquelle BASE - Bielefeld Academic Search Engine (Lebenswissenschaftliche Auswahl)

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