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By Year:
| 2006-2007
| 2005-2006
| 2003-2004
| 2002-2003
| 2001-2002
| 2000-2001
2006-2007 Academic Year
April 20, 2007 - Building Motion: Constructing Movements from Simple Spinal Circuits
Corey Hart,
Department of Neurobiology and Anatomy
Drexel University, College of Medicine
When: 3:00 PM
Where: Mendel 213
Refreshments at 2:30
March 23, 2007 - The Protein Ferritin As An Environmentally Relevant
Nanosystem
Daniel R. Strongin,
Department of Chemistry
Temple University
When: 3:00 PM
Where: Mendel 213
Refreshments at 2:30
The mineralization of ferritin proteins is a simple, yet effective method for assembling nanosized catalytic precursors having precise, pre-determined structures and sizes ranging from 10 to 80 Å. Horse spleen ferritin and Listeria Innocua ferritin-like protein were used to assemble Fe(O)OH particles ranging from 40 to 80 Å and 10 to 40 Å in diameter, respectively. In some cases, the protein was deposited on a Si support, dried and exposed to ozone to remove the protein shell. Probe molecules were used to investigate the surface reactivity of the nanoparticles in ferritin and without the protein cage as a function of size. First, the photoexcitation of ferritin results in the rapid reduction of toxic Cr6+ to immobile Cr3+ species. Second, results will be presented that investigate the reactions of sulfur dioxide (with molecular oxygen) on different sizes of iron oxyhrydoxide (ferrihydrite) nanoparticles. The surface reactions that led to the production of adsorbed sulfur oxyanions were found to be sensitive to the size and structure of the nanoparticle substrate.
March 16, 2007 - A Brief Survey of Computer-Aided Auscultation of the Heart:
From Anatomy to Applications
Ray Watrous,
Chief Technology Officer & Founder
Zargis Medical Corp.
When: 3:00 PM
Where: Mendel 213
Refreshments at 2:30
Understanding of the origin and physiological significance of heart sounds has progressed tremendously since the invention of the stethoscope by Rene Laennec in 1816. This brief survey reviews the development of computer-aided auscultation of the heart, and traces the relationship between cardiac anatomy and physiology and the acoustic signals that are foundational to cardiac auscultation. The survey includes a review of human perception of heart sounds and its limitations, and notes the contributions of phonocardiogaphy to clinical medicine and the development of heart sound analysis systems. Examples and results of advanced signal processing methods (wavelet decomposition, neural network classifiers, Hidden Markov models) that have been applied to the analysis of heart sounds and murmurs are summarized. The talk concludes with an overview of clinical applications of computer-assisted diagnostic decision support and screening systems, illustrated by two clinical studies: one discriminating innocent versus pathological murmurs and the other identifying cases of obstructive hypertrophic cardiomyopathy, a significant cause of sudden cardiac death in young athletes.
December 1, 2006 - Weighing Neutron Stars
David Nice,
Department of Physics
Bryn Mawr College
When: 3:00 PM
Where: Mendel 213
Refreshments at 2:30
Millisecond radio pulsars are among the most extreme objects in the Galaxy — these neutron stars pack more than a solar mass of matter within radii of only a few kilometers, while rotating hundreds of times a second. I will describe observations of binary pulsar systems made with the Arecibo radio telescope. The main focus of the talk will be the measurement of relativistic phenomena in the orbital motion of pulsars — including detection of the effects of emission of gravitational radiation by tight binary systems — and the use of these relativistic observations to measure their masses.
- Announcement poster available for
download (
 )
2005 - 2006 Academic Year
March 31, 2006 - Physical Cosmology from Einstein to Dark Energy
David T. Chuss, 1995,
Goddard Space Flight Center
NASA
When: 4:00 PM
Where: Mendel 102 (Gallen Lecture Hall)
Refreshments at 3:00
Sigma Pi Sigma Induction Ceremony at 3:30
- Announcement poster available for
download ()
March 17, 2006 - Strings, Black Holes, and Gauge Theories
Steven S. Gubser
Department of Physics
Princeton University
When: 3:00 PM
Where: Mendel 213
Refreshments at 2:30
- Announcement poster available for
download ()
February 10, 2006 - The Role of Medical Physics in the Treatment of Cancer
Peter J. Debus,
Staff Medical Physicist
The Cancer Institute
When: 3:00 PM
Where: Mendel 213
Refreshments at 2:30
- Announcement poster available for
download ()
2003 - 2004 Academic Year
April 30, 2004 - Hybrid II-VI Semiconductors:
A Unique Class of Nanostructures with Tunable Properties
Jing Li, Chemistry & Materials Science
Rutgers University
When: 12:30 PM
Where: Mendel 115
- Announcement poster available for
download ()
April 16, 2004 - Dark Matter and the DRIFT Experiment
C. J. Martoff,
Professor of Physics
Temple University
When: 12:30 PM
Where: Mendel 341
Refreshments in 362
- Announcement poster available for
download ()
March 12, 2004 - GE Global Research:
Overview and Photonics Technology
James Loman, GE Corporation
When: 12:30 PM
Where: Mendel 341
Refreshments in 362
November 21, 2003 - The Role of Physics in Modern Medicine:
Development of Minimally-Invasive Diagnostics & Therapies
Apostolos Doukas, Wellman Laboratories of Photomedicine
Harvard Medical School
When: 12:30 PM
Where: Mendel 115
November 7, 2003 - Metal Clusters:
(1) The Onset of Metallicity
(2) The Search for Cluster-Assembled Materials
Kit Bowen, Chemistry & Applied Physics Laboratory
Johns Hopkins University
When: 12:30 PM
Where: Mendel 115
October 31, 2003 - Supercritical CO2-Based “Dry” Chemical Mechanical Planarization Processes for Microelectronic Device Fabrication
Carol Bessel, Department of Chemistry
Villanova University
When: 12:30 PM
Where: Mendel 115
October 3, 2003 - Controlling Resonant Interactions in a Frozen Gas of Highly-Excited Atoms
Michael Noel, Department of Physics
Bryn Mawr College
When: 12:30 PM
Where: Mendel 115
2002 - 2003 Academic Year
March 28, 2003 - Quasicrystal Surfaces: From Fibonacci to Frying Pans
Renee D. Diehl, Dept. of Physics
Pennsylvania State Univ.
When: 12:45 PM
Where: Gallen Lecture Hall (Mendel 102)
March 14, 2003 - Where the Fundamental Scales of Physics Come From
Stephen Barr, Dept. of Physics & Astronomy
Univ. of Delaware
When: 12:45 PM
Where: Gallen Lecture Hall (Mendel 102)
February 28, 2003 - Title to be announced
A. Doukas
When: 12:45 PM
Where: Gallen Lecture Hall (Mendel 102)
February 21, 2003 - Title to be announced
William P. Knopf, Applied Physics Laboratory
Johns Hopkins Univ.
When: 12:45 PM
Where: Gallen Lecture Hall (Mendel 102)
February 7, 2003 - High Performance Rigid-Rod Polymers as used in Composite Materials: A Quantum Chemistry Point of View
Carl Krauthauser, Univ. of Delaware
When: 12:45 PM
Where:
Gallen Lecture Hall (Mendel 102)
January 17, 2003 - Effective Interactions are Effective Interactions
Barry R. Holstein, Deptartment of Physics
University of Massachusetts at Amherst
When: 12:45 PM
Where: Gallen Lecture Hall (Mendel 102)
November 1, 2002 - Of Frogs and Force Fields: Motor Primitives and the Basis of Movement
Corey B. Hart, Department of Neurobiology
Drexel University, College of Medicine
When: 12:45 PM
Where: Gallen Lecture Hall (Mendel 102)
September 20, 2002 - Magnetic Fields in the Cold Dust at the Galactic Center
David T. Chuss, Northwestern Univ.
When: 12:45 PM
Where: Gallen Lecture Hall (Mendel 102)
2001-2002 Academic Year
April 12, 2002 - Polymer Models of Proteins and Predictions of Stability and Function
Huan-Xiang Zhou, Department of Physics and Astronomy
Drexel University
When: 12:45PM
Where: Room 362, Mendel
February 15, 2002 - The Role of Neutrinos in Astrophysics and Cosmology
David Seckel, Department of Physics and Astronomy
University of Delaware
When: 12:45 PM
Where: Room 362, Mendel
January 25, 2002 - Analysis of the origins of the 1,4-Dioxane Anomaly, using steady state and time-resolved fluorescence spectroscopy
Mazdak Heidary-Khajehpour, Department of Biochemistry and Biophysics
University of Pennsylvania
When: 12:45 PM
Where: Room 362, Mendel
September 21, 2001 - Adventures in Biophysics: Applications of Image Analysis, Computer Simulations and Laser Tweezers in Immunology
Suzanne Amadore Kane, Department of Physics and Astronomy
Haverford College
When: 12:30
PM
Where: Room 362, Mendel
2000-2001 Academic Year
The Fractal EEG: Fractal Dimension and the Detection of and Prediction of Epileptic Seisures
Corey B. Hart (1995), Department of Neuroscience and Anatomy
The Pennsylvania State College of Medicine
Research at the Jefferson Lab: Free Electron Laser User Facility
Michelle Shinn, Thomas Jefferson National Accelerator Facility
(Sigma Pb Sigma Induction Lecture)
HREELS and SPM Applied to Polymer Surfaces and Interfaces
N. John Dinardo, Department of Physics
Drexel University
High Precision tests and the Next Energy Frontier in Experimental Particle Physics
Joseph I. Kroll, Department of Physics & Astronomy
University of Pennsylvania
Submillimeter Polarimetry of the Galactic Center from Antarctica
David T. Chuss (1995)
Northwestern University
(Physics Club presentation)
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