2015 CAP Congress / Congrès de l'ACP 2015

Session

W2-11 Microfluidics and Driven Motion (DMBP) / Microfluidique et mouvement forcé (DPMB)

W2-11

17 Jun 2015, 13:45

University of Alberta

Conveners

W2-11 Microfluidics and Driven Motion (DMBP) / Microfluidique et mouvement forcé (DPMB)

• Maikel Rheinstadter (McMaster University)

765. Measuring flow and yielding with coherent x-rays

Michael Rogers (University of Ottawa)

17/06/2015, 13:45

Medical and Biological Physics / Physique médicale et biologique (DMBP-DPMB)

Invited Speaker / Conférencier invité

When coherent radiation is scattered by particles, its scattering pattern is modulated by *speckle*. If the scattering particles move, the speckle will change accordingly. This principle forms the basis of XPCS (X-ray photon correlation spectroscopy), which utilizes bright, coherent X-rays to probe nanoscale particle motion. We will discuss our recent efforts to extend XPCS in two different...

574. Structure Determination from Single-Particle X-ray Imaging

Dr Ahmad Hosseinizadeh (Univ. of Wisconsin, USA)

17/06/2015, 14:15

Medical and Biological Physics / Physique médicale et biologique (DMBP-DPMB)

Oral (Non-Student) / orale (non-étudiant)

X-ray free electron lasers, such as Linac Coherent Light Source at SLAC, can be used to generate diffraction patterns of non-crystalline biological objects, like viruses. Then the main goal is to extract the high-resolution 3D structure of such particles by assembling 2D diffraction data with random orientations. However, structure determination still remains as a major challenge, and powerful...

644. Investigating the correlation between molecular structure and mechanical properties of collagen using optical tweezers

Dr Marjan Shayegan (Postdoctoral Researcher)

17/06/2015, 14:30

Medical and Biological Physics / Physique médicale et biologique (DMBP-DPMB)

Oral (Student, Not in Competition) / Orale (Étudiant(e), pas dans la compétition)

Collagens represent a prominent family of fibrous structural proteins present in the majority of connective tissues in mammals that contribute to their mechanical behaviors. Collagen self-assembles into well-defined structures including fibrils, which makes it an excellent example of a hierarchical biological system with a broad range of functions. It is known that fibril formation kinetics...

489. Interferometric second harmonic generation imaging of biological tissues

Prof. François Légaré (INRS-EMT)

17/06/2015, 14:45

Medical and Biological Physics / Physique médicale et biologique (DMBP-DPMB)

Oral (Non-Student) / orale (non-étudiant)

In recent years, Second Harmonic Generation (SHG) microscopy has emerged as a powerful technique to image in situ non-centrosymmetric structures in biological tissues, such as collagen, a major structural protein of vertebrates. However, due to the coherence of SHG signal, intensity depends not only on the density and the overall organization of harmonophores, but also on their relative...

911. MR Imaging with Radiofrequency Phase Gradients

Dr Jonathan Sharp (University of Alberta)

17/06/2015, 15:00

Medical and Biological Physics / Physique médicale et biologique (DMBP-DPMB)

Oral (Non-Student) / orale (non-étudiant)

Although MRI offers highly diagnostic medical imagery, patient access to this modality worldwide is very limited when compared with X-ray or ultrasound. One reason for this is the expense and complexity of the equipment used to generate the switched magnetic fields necessary for MRI encoding. These field gradients are also responsible for intense acoustic noise and have the potential to induce...