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January 01, 2015
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Date:21WednesdayJanuary 2015Lecture
SU(3) in D decays: From 30% symmetry breaking to 10-4 precision
More information Time 10:30Location Tel Aviv UniversityLecturer Michael Gronau
TechnionOrganizer Department of Particle Physics and Astrophysics
Joint Particle Physics MeetingsContact Details Show full text description of 10:15 Refreshments 13:00 Informal Lunch talk...» 10:15 Refreshments
13:00 Informal Lunch talkAbstract Show full text abstract about SU(3) symmetry has been known to describe adequately charmed...» SU(3) symmetry has been known to describe adequately charmed meson decay amplitudes with 30% SU(3) breaking corrections. I will describe a new approach treating perturbatively high order SU(3) breaking. I will focus on predicted amplitude relations affected by fourth order SU(3) breaking terms varying between 10-3 and 10-4. SU(3) relations failing at such high level of precision could provide evidence for new physics in the flavor sector. -
Date:21WednesdayJanuary 2015Lecture
Chemical Physics Guest Seminar
More information Time 11:00Title Novel Semiclassical Approaches to Non-Adiabatic Dynamics of Charge and Energy Transfer for Solar Energy ApplicationsLocation Perlman Chemical Sciences Building
Room 404Lecturer Dr Alexey Akimov
University of Southern California, Los AngelesOrganizer Department of Chemical and Biological PhysicsContact Abstract Show full text abstract about Rational design of efficient solar energy materials is drive...» Rational design of efficient solar energy materials is driven by novel insights into non-equilibrium processes of charge and energy transfer, exciton recombination, charge carrier trapping, radiative and non-radiative relaxation of electronic excited states. To gain a better understanding of these processes, a detailed description of coupled electron-nuclear dynamics in complex systems is essential. A direct solution of fully quantal task is prohibitively expensive, and the accurate and efficient semiclassical methodologies for quantum non-adiabatic dynamics are needed.
In this seminar, I will present novel methods and tools for accurate simulation of quantum dynamics for solar energy material applications. Firstly, the second quantized surface hopping (SQUASH) approach will be presented. The method solves the superexchange problem in Auger dynamics, is capable of describing tunneling, and is particularly suitable for calculations in diabatic representation. Secondly, the coherence penalty functional (CPF) approach will be discussed. The method incorporates decoherence effects within the mean-field framework and provides notable improvements in computed scattering probabilities and electron transfer timescales. Thirdly, the PYXAID toolbox for simulating quantum dynamics in atomistic systems will be introduced. Its capabilities will be showcased on a number of molecular and condensed matter systems relevant to solar energy material research.
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Date:21WednesdayJanuary 2015Lecture
Families of Harish Chandra modules connecting compact and noncompact Lie groups
More information Time 11:00Location Jacob Ziskind Building
Room 261Lecturer Eyal Subag
Tel Aviv UniversityOrganizer Faculty of Mathematics and Computer Science
Algebraic Geometry and Representation Theory SeminarContact -
Date:21WednesdayJanuary 2015Lecture
TBD
More information Time 11:15 - 12:00Location Nella and Leon Benoziyo Physics Building
Benoziyo Center for Astrophysics Seminar RoomLecturer Vladimir KurtOrganizer Nella and Leon Benoziyo Center for AstrophysicsContact -
Date:21WednesdayJanuary 2015Lecture
Machine-Learning the Universal Semantics of Natural Languages
More information Time 11:15Location Jacob Ziskind Building
Lecture Hall - Room 1Lecturer Omri Abend
University of EdinburghOrganizer Faculty of Mathematics and Computer Science
Machine Learning and Statistics SeminarContact -
Date:21WednesdayJanuary 2015Lecture
Deciphering and reversing the consequences of mitochondrial DNA damage
More information Time 12:00Location Arthur and Rochelle Belfer Building for Biomedical Research
Botnar AuditoriumLecturer Dr. Cory Dunn
Assistant Professor, Department of Molecular Biology and Genetics, Koç University, Istanbul, TurkeyOrganizer Department of Molecular GeneticsContact Abstract Show full text abstract about Mitochondrial DNA (mtDNA) encodes several proteins playing k...» Mitochondrial DNA (mtDNA) encodes several proteins playing key roles in bioenergetics. Pathological mutations of mtDNA can be inherited or may accumulate following treatment for viral infections or cancer. Furthermore, many organisms, including humans, accumulate significant mtDNA damage during their lifespan, and it is therefore possible that mtDNA mutations can promote the aging process.
There are no effective treatments for most diseases caused by mtDNA mutation. An understanding of the cellular consequences of mtDNA damage is clearly imperative. Toward this goal, we use the budding yeast Saccharomyces cerevisiae as a cellular model of mitochondrial dysfunction. Genetic manipulation and biochemical study of this organism is easily achieved, and many proteins and processes important for mitochondrial biogenesis were first uncovered and best characterized using this experimental system. Importantly, current evidence suggests that processes required for survival of cells lacking a mitochondrial genome are widely conserved between yeast and other organisms, making likely the application of our findings to human health.
I will discuss our most recent work related to the reversal of mitochondrial dysfunction. Specifically, we have found that reducing the acidity of the vacuole, the yeast analog of the mammalian lysosome, provides significant benefits to cells deleted of mtDNA. Moreover, our work demonstrates that perturbation of conserved signaling pathways involved in nutrient sensation can greatly increase the fitness of cells lacking a mitochondrial genome. -
Date:22ThursdayJanuary 201523FridayJanuary 2015Conference
Cell Communication in Translational Research
More information Time All dayLocation David Lopatie Conference Centre
Kimmel AuditoriumChairperson Irit SagiHomepage Contact -
Date:22ThursdayJanuary 2015Lecture
Large deviations for the empirical field of Coulomb and Riesz systems
More information Time 11:05Location Jacob Ziskind Building
Room 261Lecturer Thomas Lebl'{e}
Laboratoire Jacques-Louis LionsOrganizer Faculty of Mathematics and Computer Science
Geometric Functional Analysis and Probability SeminarContact -
Date:22ThursdayJanuary 2015Colloquia
The LHC: on the verge of a discovery
More information Time 11:15Location Edna and K.B. Weissman Building of Physical Sciences
AuditoriumLecturer SHIKMA BRESSLER
WEIZMANN INSTITUTE OF SCIENCEOrganizer Faculty of PhysicsContact Details Show full text description of 11:00 – coffee, tea, and more...» 11:00 – coffee, tea, and moreAbstract Show full text abstract about The Large Hadron Collider (LHC) at CERN is the most powerful...» The Large Hadron Collider (LHC) at CERN is the most powerful accelerator ever built. It provides an extremely rich environment to search for “physics beyond the standard model”. The ATLAS detector was designed to fully exploit the discovery potential of the LHC. The massive data collected by ATLAS lead to countless possible meas-urements - each having the potential of changing our understanding of particle physics. I will discuss conceptual as well as daily challenges addressed by experimental high energy physicists. Our search for lepton flavor violating Higgs decays and studies of advanced particle detectors will serve as examples for ongoing data analysis and prospects for instrumentation for future experiments, respectively. -
Date:22ThursdayJanuary 2015Lecture
Autonomous Hamiltonian flows, Hofer's geometry and persistence modules.
More information Time 14:00Location Jacob Ziskind Building
Lecture Hall - Room 1Lecturer Egor Shelukhin
University of MontrealOrganizer Faculty of Mathematics and Computer Science
Seminar in Geometry and TopologyContact -
Date:22ThursdayJanuary 2015Lecture
Peletron meeting
More information Time 16:00 - 18:00Contact -
Date:22ThursdayJanuary 2015Lecture
Peletron meeting
More information Time 16:00 - 18:00Contact -
Date:22ThursdayJanuary 2015Lecture
Peletron meeting
More information Time 16:00 - 18:00Contact -
Date:23FridayJanuary 2015Cultural Events
Buenos aires
More information Time 11:00 - 13:00Title Virtual journey in Buenos airesLocation Dolfi and Lola Ebner AuditoriumContact Details Show full text description of coffee will be served at 10:30...» coffee will be served at 10:30 -
Date:25SundayJanuary 201529ThursdayJanuary 2015Conference
Weizmann-U Michigan-Technion Partnership Conference on Biomedical and Bioengineering Research
More information Time All dayLocation David Lopatie Conference Centre
Kimmel AuditoriumChairperson Zvi LivnehHomepage Contact -
Date:25SundayJanuary 2015Lecture
Engineering biomaterials for regenerative medicine
More information Time 11:00Location Perlman Chemical Sciences Building
Room 404Lecturer Prof. Smadar Cohen
Regenerative Medicine and Stem Cell (RMSC) Research Center and Avram and Stella Goldstein-Goren Department of Biotechnology Engineering, Ben-Gurion University of the NegevOrganizer Department of Molecular Chemistry and Materials Science
Soft Matter and BiomaterialsContact Details Show full text description of Enhancing tissue self-repair via the application of instruct...» Enhancing tissue self-repair via the application of instructive biomaterials is a main goal in regenerative medicine. I will describe the features of bio-inspired materials designed to instruct tissue repair by presenting the regeneration-inducing factors in a manner mimicking their natural presentation, i.e., via affinity binding to the matrix. As affinity attached to the matrix, the factors maintained activity in the damaged tissue and promote regeneration and repair. In a severe murine hindlimb ischemia model, the sequential delivery of multiple angiogenic factors improved tissue blood perfusion and induced mature blood vessel network formation. In another model of osteochondral defect, we developed a hydrogel system to simultaneously induce the endogenous regeneration of hyaline cartilage and subchondral bone. The system was designed as two hydrogel layers, spatially presenting the chondro-inductive transforming growth factor-1 (TGF1) in one layer and the osteo-inductive bone morphogenetic protein-4 (BMP-4) in a second layer, via affinity binding to the matrix. Injection of the bilayer system (with no cells) into a subchondral defect in rabbits induced the endogenous regeneration of articular cartilage and the subchondral bone underneath within 4 weeks. In a pig model, a 6-month follow-up demonstrated the stability of the regenerated hyaline cartilage. The results indicate that stem cells migrating into the defect are able to sense the biological cues spatially presented in the hydrogel and respond by differentiation into the appropriate cell lineage. The therapeutic efficacy of the instructive biomaterials as well as their ease of formulation and delivery by non-invasive method indicates that this strategy would have a real translational potential in regenerative medicine. -
Date:25SundayJanuary 2015Lecture
Gaia - The Billion-Star Survey
More information Time 11:00Location Sussman Family Building for Environmental Sciences
M. Magaritz Seminar RoomLecturer Shay Zucker
Department of Geosciences Tel Aviv UniversityOrganizer Department of Earth and Planetary SciencesContact Abstract Show full text abstract about Gaia is a space observatory which ESA has launched in Decemb...» Gaia is a space observatory which ESA has launched in December 2013. Its proclaimed mission is to study the origins and subsequent evolution of our Galaxy, the Milky Way. In order to attain its goals it is performing a survey of about a billion stars, allowing the construction of the most accurate three-dimensional map to date of the Galaxy. The talk will describe the Gaia space mission, its scientific context, and its expected impact, beyond its proclaimed mission. Specifically, it will look deeper into the prospects of detecting extrasolar transiting planets -
Date:25SundayJanuary 2015Lecture
"Pump" - the movie - Mr. Yossie Hollander - Alternative sustainable Energy Research Initiative (AERI) Seminar Series
More information Time 12:30Title "Pump"- the movie followed by Q&A with Mr. Hollander, Producer of the movieLocation Dolfi and Lola Ebner AuditoriumLecturer Mr. Yossie Hollander
Entrepreneur, Investor and PhilanthropistOrganizer Feinberg Graduate School
Alternative Sustainable Energy Research Initiative (AERI)Contact Details Show full text description of SPECIAL EVENT Gathering & light lunch at 12:00...» SPECIAL EVENT
Gathering & light lunch at 12:00Abstract Show full text abstract about PUMP is an eye-opening documentary that tells the story of A...» PUMP is an eye-opening documentary that tells the story of America’s oil addiction. The movie explains how we can end it and finally win choice at the pump. *The movie lasts 84 min
Host: Prof. Ron Milo -
Date:25SundayJanuary 2015Lecture
To be announced
More information Time 13:00Location Arthur and Rochelle Belfer Building for Biomedical Research
Botnar AuditoriumLecturer Ofir Avidan
Shmuel Pietrokovski's group, Dept. of Molecular GeneticsOrganizer Life SciencesContact -
Date:25SundayJanuary 2015Lecture
"Characterizing viscoelastic properties of the cortex in mitotic cells"
More information Time 13:15Location Edna and K.B. Weissman Building of Physical Sciences
Drory AuditoriumLecturer Dr. Elisabeth Fischer FriedrichOrganizer Clore Center for Biological PhysicsContact Details Show full text description of Cell stiffness is a key parameter for our understanding of c...» Cell stiffness is a key parameter for our understanding of cell shape, cell migration and tissue organization. However, as the cell consists of several components, it is challenging to extract the force contribution and the elastic modulus of a specific component upon cell deformation. Here, we probe the stiffness of round, mitotic HeLa cells in a parallel plate compression setup, where we measure the force necessary to compress cells in between plates. An earlier study showed that in steady state, this force is due to cell surface tension. Here, we apply step strains and sinusoidal modulation of the plate distance at various frequencies allowing us to probe differential cell stiffness. We find strong indications that cell stiffness in mitosis is dominated by actomyosin and therefore by the mitotic cortex and extract an associated frequency-dependent area extension modulus. We show that myosin activity at the same time fluidizes and stiffens cells, where differential cell stiffness increases linearly in dependence of active prestress. On the other hand, the passive cross-linker α-actinin solidifies and stiffens mitotic cells. Our study shows how active and passive cross-linkers influence rheological properties of the cortical actin-network in vivo.