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SUNMONTUEWEDTHUFRISAT
Events for September 09, 2005
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Last Day to Add/Drop Classes
Fri, Sep 09, 2005
Viterbi School of Engineering Student Affairs
University Calendar
Last day to add classes and drop classes for full refund and NO "W" on transcripts.
Audiences: Everyone Is Invited
Contact: Monica De Los Santos
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CED Welcome Back BBQ
Fri, Sep 09, 2005 @ 11:30 AM - 02:00 PM
Center for Engineering Diversity
Student Activity
over
Location: E-Quad
Audiences: Everyone Is Invited
Contact: David Martinez
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Slice, Dice and Analyze Bacteria One Cell and one Atom at a Time
Fri, Sep 09, 2005 @ 01:00 PM - 02:00 PM
Sonny Astani Department of Civil and Environmental Engineering
Conferences, Lectures, & Seminars
Presented by:
Prof. Radu Popa, Ph.D.
Earth Science
USCAbstract:
Modern microanalysis in material sciences and in environmental sciences is dominated by three technological approaches: Mass Spectrometry (MS), High Resolution Electron Microscopy with EDS (HRTEM-EDS); and Atomic Force Microscopy (AFM). MS instruments have considerable analytical capabilities, yet, cannot probe samples at very small scales (such as 1 m); and thus are less helpful in studying individual microbes. HRTEM-EDS and AFM instruments can reveal structures at Angstrom scales but have considerable analytical limitations. Nano-Secondary Ion Mass Spectrometry (NanoSIMS) is an edge technology; an ion microprobe developed for the purpose of bringing together the benefits of high resolution imaging with the analytical capabilities of MS. Using NanoSIMS it is now possible to explore the chemistry and the isotopic composition of one bacterium cell, with 50 nm lateral resolution and 10-20 Å vertical resolution. We tested the limits of this technology by addressing physiological questions in individual microbes. The model organisms for this study are Cyanobacteria, a group of Prokaryotes with an impressive array of metabolic capabilities including N2-fixation, C-fixation and heterotrophy. In some filaments of Cyanobacteria such as Anabaena sp. certain cells named heterocysts are metabolically specialized. This specialization results in considerable biochemical differences between adjacent cells. We used NanoSIMS to measure this variability and to make kinetic analyses bacteria. Currently, NanoSIMS allows the physiologist study the metabolic performance of one microbe, and the micropaleontologist to distinguish abiotic from biogenic structures in ancient samples. In the near future ion microprobe instruments will also be used for chemical and isotopic characterization of samples in environmental studies, in astrobiology and in forensic analysis.
Location: Kaprielian Hall (KAP) - 156
Audiences: Everyone Is Invited
Contact: Evangeline Reyes
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Viterbi Transfer Workshop
Fri, Sep 09, 2005 @ 01:00 PM - 02:00 PM
Viterbi School of Engineering Undergraduate Admission
Workshops & Infosessions
Viterbi Transfer Workshops are one-hour presentations covering topics about the engineering curriculum, student services, research opportunities, transfer requirements and the application process. Viterbi transfer counselors will be available for individual coursework advisement on a first-come, first-serve basis in the afternoon following the program (transcripts required for advisement).RSVP: Please email us or call (800) 526-3347.
Location: Ronald Tutor Hall (RTH) 110
Audiences: Prospective Transfer Students
Contact: Undergraduate Admission
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IEEE Ultrasonics, Ferroelectrics and Frequency Control Society Distinguished Lecture
Fri, Sep 09, 2005 @ 02:00 PM
Alfred E. Mann Department of Biomedical Engineering
Conferences, Lectures, & Seminars
The BME Community is invited to attend the IEEE Ultrasonics, Ferroelectrics and Frequency Control Society Distinguished Lecture sponsored by the NIH Resource on Medical Ultrasonic Transducer Technology. Dr. Nava Stter will be talking on Down Scaling in Piezoelectric and Pyroelectrics: Microdevices, Nanofabrication, Nanoscale Features and Size Effects. The lecture will be held Friday, September 9, 2005 in GFS 101 at 2:00pm. For more information please contact Joe Han (joehan@usc.edu).
Location: Grace Ford Salvatori Hall Of Letters, Arts & Sciences (GFS) - 101
Audiences: Graduate/Undergrad
Contact: Darryl Hwang
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Discrete Mechanics and Control
Fri, Sep 09, 2005 @ 02:00 PM - 03:00 PM
Ming Hsieh Department of Electrical and Computer Engineering
Conferences, Lectures, & Seminars
DISTINGUISHED LECTURER SERIES"Discrete Mechanics and Control"Dr. Jerrold E. MarsdenCalifornia Institute of TechnologyAbstract:This talk will outline new methods from discrete mechanics for stabilization and optimization of mechanical systems. The idea of discrete mechanics is to replace Hamilton's principle, possibly including dissipative or control forces, by a corresponding discrete version. These methods have led to the development of successful variational integrators for the dynamics of mechanical systems, including continuum mechanics. After reviewing this methodology for dynamics, we show how it is also useful for control. Optimization is illustrated using a fleet of hovercraft, underwater vehicles and spacecraft (with Oliver Junge and Sina Ober-Bloebaum) and for locomotion problems (with Eva Kanso).Bio:Jerrold E. Marsden received his PhD from Princeton University in 1968 in Applied Mathematics and is now the Carl F. Braun Professor of Engineering and Control and Dynamical Systems at Caltech. His primary current interests are in applied dynamics, control theory, and multiscale systems, especially how these subjects relate to dynamical and mechanical systems with symmetry, to numerical algorithms in computational mechanics, as well as to the dynamics and control of underwater vehicles in a dynamic ocean environment, and to astrodynamics and space mission design. He received the AMS-SIAM Norbert Wiener prize (1990), a Humboldt Senior Scientist award (1991, 1999), a Fairchild Fellowship (1992), a Max Planck Research Award (2000), and the SIAM von Neumann prize (2005). He is a fellow of the Royal Society of Canada and the American Academy of Arts and Science. He is an Editor of Springer-Verlag's Applied Mathematical Sciences Series and is on the editorial boards for a number of prominent journals in applied dynamics and mechanics. He currently serves as director of CIMMS, the Center for Integrative Multiscale Modeling and Simulation at Caltech, is on the Board of Trustees of SIAM, is on the Scientific Advisory board of the DFG Research Center "Mathematics for Key Technologies", Berlin and is the scientific co-chair of ICIAM 2011.Host: Prof. Edmond Jonckheere, x04457 ***A reception will follow the seminar at 3:00p.m.
Location: Ethel Percy Andrus Gerontology Center (GER) - ontology Auditorium
Audiences: Everyone Is Invited
Contact: Rosine Sarafian
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NANOTECHNOLOGY AND THE DEVELOPMENT AND ANALYSIS OF ENERGETIC MATERIALS
Fri, Sep 09, 2005 @ 02:30 PM - 04:00 PM
Mork Family Department of Chemical Engineering and Materials Science
Conferences, Lectures, & Seminars
Presented by:Professor Richard A. YetterMechanical Engineering, Pennsylvania State UniversityAbstract:Over the next decade, nanotechnology is expected to produce significant advancements in the development of energetic materials. Much of the highly desirable traits of nano-sized ingredients (e.g., metal powders and crystalline oxidizers) in energetic materials have been attributed to their high specific surface area (high reactivity), lower melting temperatures, increased catalytic activity, and potential ability to store energy in surface defects. In addition, the nano dimensions of these materials result in small characteristic transport times for mass and energy between fuel and oxidizer.
Metal additives have long been used in energetic materials to increase energy densities. Although the addition of micron-sized metal particulate has been successful in many applications, their size generally limits overall combustion times, requires high ignition temperatures, and generates condensed phase products also of micron size. The possibility of increasing the reactivity of metal particulate, thereby lowering ignition temperatures and shortening reaction times, as well as increasing densities and overall energy, could greatly enhance existing uses and even generate new usage of metals in reactive systems. In the presentation, the oxidation and combustion characteristics of metal nanoparticles are reviewed and compared with micron-sized particles. In addition, their application in various fuels, propellants, and explosive systems are summarized.
While usage of nano-ingredients in current energetic materials has demonstrated considerable benefits that can be attributed to the characteristics of the nano-material, much of the anticipated benefits have not been realized due to the use of conventional fabrication techniques in integrating the nano-material into the formulations. The presentation also examines new ways to assemble nano-energetic materials, including self-assembly of components with sizes in the nm to mm range, to provide concurrent increases in performance and managed energy release while providing reduced sensitivity and ease of processing and handling. Refreshments will be served at 2:30p.m.Location: Vivian Hall of Engineering (VHE) - 217
Audiences: Everyone Is Invited
Contact: Petra Pearce
