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SUNMONTUEWEDTHUFRISAT
Events for February 18, 2005
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Resume Daze - Drop-in advising
Fri, Feb 18, 2005 @ 10:00 AM - 12:00 PM
Viterbi School of Engineering Career Connections
Workshops & Infosessions
Does your resume need a quick touch-up before the Engineering Career Fair? Stop by RTH 218 to talk with a Viterbi advisor during these special drop-in times.
Location: Ronald Tutor Hall of Engineering (RTH) - 218
Audiences: Viterbi students
Contact: Engineering Career Services
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Using chlorine stable isotopes to characterize sources and monitor attenuation of groundwater pollu
Fri, Feb 18, 2005 @ 01:00 PM - 02:00 PM
Sonny Astani Department of Civil and Environmental Engineering
Conferences, Lectures, & Seminars
Using chlorine stable isotopes to characterize sources and monitor attenuation of
groundwater pollutantsPresented by:Dr. Max Coleman
Jet Propulsion Laboratory
California Institute of Technology
Pasadena, CAAbstractChlorine has two stable (non-radioactive) isotopes, atomic masses 35 and 37. Disappointingly for geochemists there is generally very little variation in the abundance ratio of the two isotopes in natural sedimentary rocks and waters. There are exceptions to this rule. Fortunately, manufactured chemicals occurring in soils and groundwaters show a range of values and may be characterized isotopically to trace sources of pollution. However, the microbial processes of perchlorate reduction and dechlorination of chlorinated aliphatic hydrocarbon solvents produce large changes in isotope compositions of both the pollutant and the harmless chloride produced. These changes are systematic and depend on the extent of completion of the process. Thus, they can be used to monitor natural attenuation of pollution but would seem to deny the possibility of characterizing the source. Our recent work has shown that analysis of the isotopic compositions of two elements in a pollutant (e.g. Cl and O in perchlorate and Cl and C in solvents) may allow simultaneous characterization and attenuation monitoring.Location: Kaprielian Hall (KAP) - 156
Audiences: Everyone Is Invited
Contact: Evangeline Reyes
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Using chlorine stable isotopes to characterize sources and monitor attenuation of groundwater pollu
Fri, Feb 18, 2005 @ 01:00 PM - 02:00 PM
Sonny Astani Department of Civil and Environmental Engineering
Conferences, Lectures, & Seminars
Using chlorine stable isotopes to characterize sources and monitor attenuation of ground pollutantsPresented by:Dr. Max Coleman
Jet Propulsion Laboratory
California Institute of Technology
Pasadena, CAAbstractChlorine has two stable (non-radioactive) isotopes, atomic masses 35 and 37. Disappointingly for geochemists there is generally very little variation in the abundance ratio of the two isotopes in natural sedimentary rocks and waters. There are exceptions to this rule. Fortunately, manufactured chemicals occurring in soils and groundwaters show a range of values and may be characterized isotopically to trace sources of pollution. However, the microbial processes of perchlorate reduction and dechlorination of chlorinated aliphatic hydrocarbon solvents produce large changes in isotope compositions of both the pollutant and the harmless chloride produced. These changes are systematic and depend on the extent of completion of the process. Thus, they can be used to monitor natural attenuation of pollution but would seem to deny the possibility of characterizing the source. Our recent work has shown that analysis of the isotopic compositions of two elements in a pollutant (e.g. Cl and O in perchlorate and Cl and C in solvents) may allow simultaneous characterization and attenuation monitoring.Location: Kaprielian Hall (KAP) - 156
Audiences: Everyone Is Invited
Contact: Evangeline Reyes
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Research and Practice of Structural Control and Health Monitoring at Harbin Institute of Technology
Fri, Feb 18, 2005 @ 02:00 PM - 03:00 PM
Sonny Astani Department of Civil and Environmental Engineering
Conferences, Lectures, & Seminars
Speaker: Prof. Hui LiThis presentation will give an overview of the research activities at HIT in the broad field of structural control and health monitoring of civil infrastructure systems in China. The use of adaptive dampers such as MR devices and shape memory alloys for control applications will be discussed, as well as applications of SHM approaches involving development and implementation of intelligent health monitoring systems for civil infrastructures.An overview will also be provided about the planning of long-range research activities in China in which the National Science Foundation is developing avenues for international collaboration involving structural health monitoring and "intelligent" systems.Biosketch of Prof Li• Professor, School of Civil Engineering, Harbin Institute of Technology, China
• Secretary-general of China Panel, International Association of Structural Control and Monitoring (IASCM)
• Research areas include structural health monitoring, vibration control and damage control, smart materials and structures, smart concrete and structures, composite structures.
• 1994 got her PhD at Harbin Institute of Technology, China
• 2001-2002 Visiting Professor, Disaster Prevention Research Institute, Kyoto University, Japan.
• 2001 Visiting Professor, Department of Civil and Structural Engineering, Hong Kong Polytechnic University.
• She is PI of 20 projects supported by NSFC, Ministry of Science and Technology, Ministry of Education, etc.
Location: Kaprielian Hall (KAP) - 203
Audiences: Everyone Is Invited
Contact: Evangeline Reyes
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Mechanistic Aspects of Fatigue and Fracture in Brittle Solids: Ceramics, Biomaterials and MEMS
Fri, Feb 18, 2005 @ 02:30 PM - 04:00 PM
Mork Family Department of Chemical Engineering and Materials Science
Conferences, Lectures, & Seminars
Presented by:Dr. Robert O. RitchieMaterials Science Division, Lawrence Berkeley National Laboratory, and Department of Materials Science and Engineering, University of BerkeleyAbstract:Whereas fatigue is generally considered as a major mechanism of failure in metallic and polymeric components, brittle materials, such as ceramics and silicon, are also susceptible to premature failure under cyclic loads, although the micro-mechanisms of fatigue damage are quite distinct to those encountered in ductile materials. This presentation focuses on the failure of such materials and specifically addresses the fatigue of "small-volume' structures for MEMS and fatigue-crack propagation in structural ceramics and elevated temperature. The relevance of such behavior to the failure of biological materials, such as teeth and bone, is described with particular emphasis to how these mineralized tissues degrade with age in terms of accumulated microstructural damage.Refreshments will be served at 2:30pmAll first-year MASC students are required to attend.
Location: Vivian Hall of Engineering (VHE) - 217
Audiences: Everyone Is Invited
Contact: YUN TAO
