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January 26, 2015

  • Date:25SundayJanuary 201529ThursdayJanuary 2015

    Weizmann-U Michigan-Technion Partnership Conference on Biomedical and Bioengineering Research

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    Time
    All day
    Location
    David Lopatie Conference Centre
    Kimmel Auditorium
    Chairperson
    Zvi Livneh
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    Conference
  • Date:25SundayJanuary 2015

    Engineering biomaterials for regenerative medicine

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    Time
    11:00
    Location
    Perlman Chemical Sciences Building
    Room 404
    Lecturer
    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 Negev
    Organizer
    Department of Molecular Chemistry and Materials Science
    Soft Matter and Biomaterials
    Contact
    DetailsShow 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.
    Lecture
  • Date:25SundayJanuary 2015

    Gaia - The Billion-Star Survey

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    Time
    11:00
    Location
    Sussman Family Building for Environmental Sciences
    M. Magaritz Seminar Room
    Lecturer
    Shay Zucker
    Department of Geosciences Tel Aviv University
    Organizer
    Department of Earth and Planetary Sciences
    Contact
    AbstractShow 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
    Lecture
  • Date:25SundayJanuary 2015

    "Pump" - the movie - Mr. Yossie Hollander - Alternative sustainable Energy Research Initiative (AERI) Seminar Series

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    Time
    12:30
    Title
    "Pump"- the movie followed by Q&A with Mr. Hollander, Producer of the movie
    Location
    Dolfi and Lola Ebner Auditorium
    Lecturer
    Mr. Yossie Hollander
    Entrepreneur, Investor and Philanthropist
    Organizer
    Feinberg Graduate School
    Alternative Sustainable Energy Research Initiative (AERI)
    Contact
    DetailsShow full text description of SPECIAL EVENT Gathering & light lunch at 12:00...»
    SPECIAL EVENT

    Gathering & light lunch at 12:00
    AbstractShow 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
    Lecture
  • Date:25SundayJanuary 2015

    To be announced

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    Time
    13:00
    Location
    Arthur and Rochelle Belfer Building for Biomedical Research
    Botnar Auditorium
    Lecturer
    Ofir Avidan
    Shmuel Pietrokovski's group, Dept. of Molecular Genetics
    Organizer
    Life Sciences
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    Lecture
  • Date:25SundayJanuary 2015

    "Characterizing viscoelastic properties of the cortex in mitotic cells"

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    Time
    13:15
    Location
    Edna and K.B. Weissman Building of Physical Sciences
    Drory Auditorium
    Lecturer
    Dr. Elisabeth Fischer Friedrich
    Organizer
    Clore Center for Biological Physics
    Contact
    DetailsShow 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.
    Lecture
  • Date:25SundayJanuary 2015

    Rock and Roll – How flies control their flight

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    Time
    14:30
    Location
    Edna and K.B. Weissman Building of Physical Sciences
    Auditorium
    Lecturer
    Tsevi Beatus
    Cornell University
    Organizer
    Department of Physics of Complex Systems
    Contact
    AbstractShow full text abstract about Flying insects can perform a wide array of extreme aerial ma...»
    Flying insects can perform a wide array of extreme aerial maneuvers with exquisite accuracy and robustness, outmaneuvering any man-made flying device. As a physical system, a flapping insect is strongly nonlinear with fast-growing mechanical instabilities that must be controlled to allow flight. Hence, similar to balancing a stick on one's fingertip, flapping flight is a delicate balancing act made possible only by ever-present, fast corrective actions. Understanding the underlying mechanisms of insect flight is a major challenge, since this graceful behavior is highly coupled to complex fluid flows and arises from the concerted operation of physiological functions across multiple length and time scales. As such, Insect flight research involves basic concepts from nonlinear dynamics, fluid mechanics, neurobiology and control theory, and has direct application to the development of small flapping robots.

    Here we show how flies control their rotational degrees of freedom: yaw, pitch and roll. We focus on their body roll angle, which is unstable and most sensitive degree of freedom. We glue a magnet to each fly and apply a short magnetic pulse that rolls it in mid-air. Fast video shows that flies fully correct for perturbations of up to 100o within 30±7ms. The roll correction maneuver consists of a stroke-amplitude asymmetry that is well described by a linear PI controller. For more aggressive perturbations, we show evidence for nonlinear and hierarchical control mechanisms. Flies respond to roll perturbations within a single wing-beat, or 5ms, making this correction reflex one of the fastest in the animal kingdom.
    Lecture
  • Date:25SundayJanuary 2015

    Incomplete metabolic pathway: a new principle in cancer metabolism

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    Time
    15:00 - 16:00
    Location
    Arthur and Rochelle Belfer Building for Biomedical Research
    Botnar Auditorium
    Lecturer
    Dr. Yoav Shaul
    Whitehead Institute for Biomedical Research,MA,USA
    Organizer
    Life Sciences
    Metabollic Research Forum
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    Lecture
  • Date:26MondayJanuary 2015

    "Twisted Crystals"

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    Time
    11:00 - 12:30
    Location
    Gerhard M.J. Schmidt Lecture Hall
    Lecturer
    Prof. Bart Kahr
    Department of Chemistry, NYU/USA
    Organizer
    Faculty of Chemistry
    Contact
    Colloquia
  • Date:26MondayJanuary 2015

    Feedforward semantic segmentation with zoom-out features

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    Time
    14:00
    Location
    Jacob Ziskind Building
    Room 141
    Lecturer
    Greg Shakhnarovich
    Toyota Technological Institute, Chicago
    Organizer
    Faculty of Mathematics and Computer Science
    Vision and Robotics Seminar
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    Lecture
  • Date:26MondayJanuary 2015

    Gapped excitations in a quantum solid

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    Time
    14:15
    Location
    Edna and K.B. Weissman Building of Physical Sciences
    Room A
    Lecturer
    Daniel Podolsky
    Technion
    Organizer
    Department of Physics of Complex Systems
    Statistical Physics Seminar
    Contact
    AbstractShow full text abstract about The BCC phase of solid helium-4 has a gapped excitation mode...»
    The BCC phase of solid helium-4 has a gapped excitation mode, as revealed by inelastic neutron scattering experiments. This mode is unexpected, since BCC is a Bravais lattice and therefore acoustic modes are the only low-lying excitations expected in the harmonic solid. I will give a simple model for this new collective excitation based on the amplitude fluctuations of a quantum solid
    Lecture
  • Date:26MondayJanuary 2015

    Random Assignment games

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    Time
    14:30
    Location
    Jacob Ziskind Building
    Room 261
    Lecturer
    Avinatan Hassidim
    Bar Ilan University and Google
    Organizer
    Faculty of Mathematics and Computer Science
    Foundations of Computer Science Seminar
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    Lecture
  • Date:26MondayJanuary 2015

    Cinderalla

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    Time
    17:30 - 19:00
    Title
    Children's Theatre
    Location
    Michael and Anna Wix Auditorium
    Contact
    Cultural Events
  • Date:27TuesdayJanuary 2015

    Lily flowering: a cool story

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    Time
    11:15
    Location
    Ullmann Building of Life Sciences
    Aharon Katzir Hall
    Lecturer
    Dr. Michele Zaccai
    Life Sciences Dept., Faculty of Natural Sciences, Ben-Gurion University of the Negev
    Organizer
    Department of Plant and Environmental Sciences
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    Lecture
  • Date:27TuesdayJanuary 2015

    Special Magnetic Resonance Seminar

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    Time
    12:00
    Title
    Probing Molecular Dances in the Cell Membrane by NMR Spectroscopy
    Location
    Perlman Chemical Sciences Building
    Room 404
    Lecturer
    Ayyalusamy Ramamoorthy
    Biophysics and Department of Chemistry University of Michigan
    Organizer
    Department of Chemical and Biological Physics
    Contact
    AbstractShow full text abstract about Membrane proteins are an exciting class of biomacromolecules...»
    Membrane proteins are an exciting class of biomacromolecules and play important roles in a variety of biological processes that are directly linked to major diseases including cancer, aging-related diseases, and infectious diseases. A complete understanding of their function can only be accomplished using high-resolution structures. In spite of recent developments in structural biology, membrane proteins continue to pose tremendous challenges to most biophysical techniques. A major area of research in my group is focused on the development of NMR techniques to study the dynamic structures of membrane bound proteins such as cytochrome b5, cytochrome P450 and cytochrome P450-reductase. In the first-half of my talk, I will present strategies to study the structure and dynamics of these challenging systems and also on the electron transfer mechanism that enables the enzymatic
    function of P450. The accumulation of misfolded proteins is a hallmark feature in numerous human disorders such as blood diseases like sickle cell anemia, neurodegenerative diseases like Alzheimer’s disease and Parkinson’s disease, and metabolic diseases such as type II diabetes. Misfolded protein aggregates may deposit in tissues, can be intracellular, extracellular, or both. The conformational changes accompanying misfolding can result in disruption of the regular function of the protein or may result in a gain of function that is often associated with toxicity. Amyloid peptides represent a subset of misfolded proteins whose misfolded state shares unique characteristics. Our research group has been investigating the high-resolution structures of early amyloid intermediates, amyloid-membrane interaction and membrane disruption, and the interaction of polyphenols with amyloid proteins. In the second-half of my presentation, NMR structures of early intermediates of amyloid peptides, mechanisms of amyloid-induced membrane disruption, and amyloid inhibition by polyphenolic compounds will be discussed. Solid-state NMR results on the interaction of amyloid fibers with lipid bilayers, and novel NMR approaches to investigate amyloid formation will also be presented.
    1. BBA Biomembranes 1768 (2007) 3235.
    2. Acc. Chem. Res. 116 (2012) 3650.
    3. Chem. Soc. Rev. 41 (2012) 608.
    Lecture
  • Date:27TuesdayJanuary 2015

    "Protein-DNA binding in the absence of specific base-pair recognition"

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    Time
    14:00
    Location
    Helen and Milton A. Kimmelman Building
    Dov Elad Room
    Lecturer
    Dr. David Lukatsky
    BGU
    Organizer
    Department of Chemical and Structural Biology
    Contact
    Lecture
  • Date:28WednesdayJanuary 2015

    Proteasome lid assembly and processing of mixed-linkage polyubiquitin conjugates

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    Time
    10:00 - 11:00
    Location
    Gerhard M.J. Schmidt Lecture Hall
    Lecture Hall
    Lecturer
    Prof. Michael Glickman
    Technion Israel Institute of Technology
    Organizer
    Department of Biomolecular Sciences
    Contact
    Lecture
  • Date:28WednesdayJanuary 2015

    Chasing the role of LKB1 in sensory axons

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    Time
    10:00
    Location
    Arthur and Rochelle Belfer Building for Biomedical Research
    Botnar Auditorium
    Lecturer
    Avraham Yaron
    Department of Biological Chemistry, WIS
    Organizer
    Life Sciences
    Contact
    Lecture
  • Date:28WednesdayJanuary 2015

    TBD

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    Time
    11:15 - 12:00
    Location
    Nella and Leon Benoziyo Physics Building
    Benoziyo Center for Astrophysics Seminar Room
    Lecturer
    Takashi Moria
    Organizer
    Faculty of Physics
    Contact
    Lecture
  • Date:28WednesdayJanuary 2015

    Pair-instability supernova progenitors with large mass loss

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    Time
    11:15 - 12:00
    Location
    Nella and Leon Benoziyo Physics Building
    Benoziyo Center for Astrophysics Seminar Room
    Lecturer
    Takashi Moria
    Organizer
    Nella and Leon Benoziyo Center for Astrophysics
    Contact
    AbstractShow full text abstract about Pair-instability supernovae (PISNe) are thermonuclear explos...»
    Pair-instability supernovae (PISNe) are thermonuclear explosions of very massive stars. The stellar core needs to be heavier than about 60 Msun for stars to be PISNe. Mass loss prevents massive stars from making large enough cores to be PISNe, and PISNe are presumed to exist in metal-free or metal-poor environment where radiation-driven mass loss is small. Stellar evolution models show that such PISN progenitors evolve to red supergiants (RSGs) shortly before their explosions. However, RSGs are suggested to be pulsationally unstable, and they can experience huge mass loss driven by the pulsation. We investigate the effect of the pulsation-driven mass loss on PISN progenitors. We find that hydrogen-rich layers of PISN progenitors are significantly reduced by the pulsation-driven mass loss, even if they are initially metal-free. Because the pulsation-driven mass loss terminates when the hydrogen-rich envelope is lost, the core mass is not affected by the pulsation-driven mass loss and they still explode as PISNe. However, the large pulsation-driven mass loss can significantly alter observational properties of PISNe.
    Lecture

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