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May 18, 2015

  • Date:17SundayMay 201519TuesdayMay 2015

    Molecular Genetics Retreat

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    Time
    All day
    Organizer
    Department of Molecular Genetics
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    Lecture
  • Date:17SundayMay 2015

    2015 Israel Crystallographic Association Annual Meeting

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    Time
    All day
    Location
    David Lopatie Conference Centre
    Kimmel Auditorium
    Chairperson
    Ron Diskin
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    Conference
  • Date:17SundayMay 2015

    The Lunar Core Dynamo

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    Time
    11:00
    Location
    Sussman Family Building for Environmental Sciences
    M. Magaritz Seminar Room
    Lecturer
    Ben Weiss
    Department of Earth, Atmospheric and Planetary Sciences MIT
    Organizer
    Department of Earth and Planetary Sciences
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    Lecture
  • Date:17SundayMay 2015

    Can proteins behave as nano-springs?

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    Time
    11:00
    Location
    Perlman Chemical Sciences Building
    Room 404
    Lecturer
    Prof. Gilad Haran
    Dept. Chemical Physics, WIS
    Organizer
    Department of Molecular Chemistry and Materials Science
    Soft Matter and Biomaterials
    Contact
    DetailsShow full text description of Repeat proteins form a class of proteins whose structure is ...»
    Repeat proteins form a class of proteins whose structure is dominated by a regular set of short-range interactions. This property may confer significant elasticity on the native state of such proteins. We use a series of advanced single-molecule fluorescence experiments to probe the molecular origin of the spring-like behavior. Our findings point to hydrophobic inter-repeat contacts as the source of the elasticity.
    Lecture
  • Date:18MondayMay 201529FridayMay 2015

    Back to the Bootstrap 2015

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    Time
    All day
    Location
    Edna and K.B. Weissman Building of Physical Sciences
    Auditorium
    Chairperson
    Zohar Komargodski
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    Conference
  • Date:18MondayMay 2015

    Weizmann Memorial Lectures

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    Time
    10:00 - 12:00
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    Academic Events
  • Date:18MondayMay 2015

    "Perspectives in Chemistry: From Supramolecular Chemistry towards Adaptive Chemistry"

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    Time
    11:00 - 12:30
    Location
    Gerhard M.J. Schmidt Lecture Hall
    Lecturer
    Prof. Jean-Marie Lehn
    Organizer
    Faculty of Chemistry
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    AbstractShow full text abstract about Supramolecular chemistry is actively exploring systems under...»
    Supramolecular chemistry is actively exploring systems undergoing self-organization, i.e. systems capable of spontaneously generating well-defined functional supramolecular architectures by self-assembly from their components, on the basis of the molecular information stored in the covalent framework of the components and read out at the supramolecular level through specific non-covalent interactional algorithms, thus behaving as programmed chemical systems.
    Supramolecular chemistry is intrinsically a dynamic chemistry in view of the lability of the interactions connecting the molecular components of a supramolecular entity and the resulting ability of supramolecular species to exchange their components. The same holds for molecular chemistry when the molecular entity contains covalent bonds that may form and break reversibility, so as to allow a continuous change in constitution by reorganization and exchange of building blocks. These features define a Constitutional Dynamic Chemistry (CDC) covering both the molecular and supramolecular levels.
    CDC introduces a paradigm shift with respect to constitutionally static chemistry. It takes advantage of dynamic diversity to allow variation and selection and operates on dynamic constitutional diversity in response to either internal or external factors to achieve adaptation.
    CDC generates networks of dynamically interconverting constituents, constitutional dynamic networks, presenting agonistic and antagonistic relationships between their constituents, that may respond to perturbations by physical stimuli or to chemical effectors.
    The implementation of these concepts points to the emergence of adaptive and evolutive chemistry, towards systems of increasing complexity.
    Colloquia
  • Date:18MondayMay 2015

    Signals of environmental limitations in microbial sediments

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    Time
    11:00
    Location
    Sussman Family Building for Environmental Sciences
    M. Magaritz Seminar Room
    Lecturer
    Tanja Bosak
    Organizer
    Department of Earth and Planetary Sciences
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    Lecture
  • Date:18MondayMay 2015

    Organic Chain Assemblies in Confined Intercalates and Freestanding Delaminates

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    Time
    14:00
    Location
    Perlman Chemical Sciences Building
    Room 404
    Lecturer
    Dr. Vikrant Naik
    Laboratory for Surface Science and Technology, Department of Materials, ETH Zurich
    Organizer
    Department of Molecular Chemistry and Materials Science
    Contact
    DetailsShow full text description of Alkylchain assemblies are ubiquitous in material chemistry. ...»
    Alkylchain assemblies are ubiquitous in material chemistry. They appear as self-assembled monolayers (SAM) on surfaces making thin and yet effective surface coatings, for example SAMs of alkylsilanes. When intercalated in two-dimensional compounds, like clays for example, these organic chains form bilayer type of arrangements that resemble lipid bilayers. These organo-clays can then be delaminated to form inorganic nanosheets.
    This talk has been divided into two parts. In the first part, I would like to discuss the conformation and dynamics of the intercalated alkyl surfactants in 2-d clay minerals resulting in the formation of organic-inorganic hybrid materials. These materials, which resemble the lipid bilayers have the distinctive advantage over their biological counterparts. Being solid, these compounds can be subjected to robust spectroscopic techniques like solid state NMR, something that the fluid-like nature of lipid membranes disallows.
    In the second part of the presentation, I would discuss a new strategy to create neutral inorganic nanosheets from the aforementioned organic-inorganic clay hybrids. The suspensions of these nanosheets show a sol-gel transition that can be characterized by experimental techniques like rheometry, SAXS, and NMR.
    The presentation will showcase a host of physical chemistry experiments and techniques that I have used over the years for characterization of these chain assemblies.
    Lecture
  • Date:18MondayMay 2015

    Renana Neeman - Music at noon

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    Time
    16:30 - 17:30
    Location
    Michael and Anna Wix Auditorium
    Contact
    DetailsShow full text description of Free Enterance ...»
    Free Enterance
    Cultural Events
  • Date:19TuesdayMay 2015

    CyTOF Meeting 2015

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    Time
    All day
    Location
    Arthur and Rochelle Belfer Building for Biomedical Research
    Botnar Auditorium
    Chairperson
    Tomer Meir Salame
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    Conference
  • Date:19TuesdayMay 2015

    Weizmann Memorial Lectures

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    Time
    10:00 - 12:00
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    Academic Events
  • Date:19TuesdayMay 2015

    The role of auxin in tomato leaf development

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    Time
    11:15
    Location
    Ullmann Building of Life Sciences
    Aharon Katzir Hall
    Lecturer
    Prof. Naomi Ori
    The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture, Faculty of Agriculture, Hebrew University of Jerusalem
    Organizer
    Department of Plant and Environmental Sciences
    Contact
    DetailsShow full text description of Host: Prof. Jonathan Gressel...»
    Host: Prof. Jonathan Gressel
    Lecture
  • Date:19TuesdayMay 2015

    Visual search in the archer fish

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    Time
    12:30
    Location
    Gerhard M.J. Schmidt Lecture Hall
    Lecturer
    Prof. Ronen Segev
    Life Sciences Dept, Ben Gurion University of the Negev
    Organizer
    Department of Brain Sciences
    Contact
    AbstractShow full text abstract about From detecting food to locating lurking predators, visual se...»
    From detecting food to locating lurking predators, visual search -- the ability to find an object of interest against a background -- needs to be accurate and fast to ensure survival. In mammals, this led to the development of a parallel search mode, pop-out, which enables fast detection time that is not dependent on the number of distracting objects. Although it may be beneficial to most animals, pop-out behavior has been observed only in mammals, where its neural correlates are found as early as V1 in contextually modulated cells that encode aspects of saliency. I will describe our recent findings of pop-out visual search in the archer fish and discuss possible implications about universality of visual search among vertebrates.
    Lecture
  • Date:19TuesdayMay 2015

    Doing accurate ab-initio structure prediction for >1000 protein families without a known structure using improved contact predictions

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    Time
    14:00 - 15:00
    Location
    Helen and Milton A. Kimmelman Building
    Dov Elad Room
    Lecturer
    Prof. Arne Elofsson
    Science for Life Laboratory Stockholm University
    Organizer
    Department of Chemical and Structural Biology
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    Lecture
  • Date:19TuesdayMay 2015

    Size-selected gold clusters: solving the atomic structure of model nanoparticles with multiple applications

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    Time
    15:00
    Location
    Perlman Chemical Sciences Building
    Room 404
    Lecturer
    Prof. Richard Palmer
    Nanoscale Physics Research Laboratory, School of Physics and Astronomy, University of Birmingham
    Organizer
    Department of Molecular Chemistry and Materials Science
    Contact
    DetailsShow full text description of The controlled deposition of beams of size-selected nanoclus...»
    The controlled deposition of beams of size-selected nanoclusters (nanoparticles), assembled from atoms in the gas phase and mass-selected before deposition, is a novel [1] but increasingly popular route to the fabrication of functional surfaces structured on the sub-10nm scale, with applications in catalysis, coatings, radio-sensitizers and biochips [2]. These systems also have the potential to serve as model, ultraprecise reference materials for bio-imaging and metrology (e.g. cryo-electron tomography) and nanotoxicology. New efforts to scale-up dramatically the rate of cluster generation thus promise significant future impact and will be summarised. However fundamental questions remain over the equilibrium atomic structures of the clusters themselves, since direct gas phase structural studies have been limited and new techniques like aberration-corrected scanning transmission electron microscopy (ac-STEM) are only now being applied to soft-landed, size-selected clusters.
    I will survey our recently published [2-8] and latest systematic ac-STEM experiments which address the atomic structure of size-selected “magic number” gold clusters – Au20, Au55, Au309, Au561, and Au923 – including dynamical manipulation experiments [6], which probe the transformation of metastable isomers into more stable configurations, and reaction-exposure experiments, which probe the stability of the nanocluster structures under real catalytic conditions. The results distinguish the hierarchy of competing isomers as a function of cluster size, expose concepts such as templated-growth, provide a body of data to stimulate and constrain computational models and are readily extendable to other sizes and cluster materials including binary systems. The image shows one frame from a dynamical STEM video of an Au923±23 cluster.

    1. R.E. Palmer, S. Pratontep and H.-G. Boyen, Nature Materials 2 443 (2003).
    2. R.E. Palmer and C. Leung, Trends in Biotechnology 25 48 (2007).
    3. Z.W. Wang and R.E. Palmer, Nano Lett. 12 91 (2012).
    4. Z.W. Wang and R.E. Palmer, Nanoscale 4 4947 (2012) [Cover].
    5. Z.W. Wang and R.E. Palmer, Nano Lett. 12 5510 (2012).
    6. Z.W. Wang and R.E. Palmer, Phys. Rev. Lett. 108 245502 (2012).
    7. S.R. Plant, L. Cao, F. Yin, Z.W. Wang and R.E. Palmer, Nanoscale 6 1258 (2014) [Cover]; S.R. Plant, L. Cao and R.E. Palmer, JACS 136 7559 (2014).
    8. D.M. Wells, G. Rossi, R. Ferrando and R.E. Palmer, Nanoscale, Advance Article (2015): DOI 10.1039/C4NR05811A.
    Lecture
  • Date:20WednesdayMay 2015

    Prefrontal mechanisms of cognitive control

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    Time
    All day
    Location
    Arthur and Rochelle Belfer Building for Biomedical Research
    Botnar Auditorium
    Chairperson
    Ofer Yizhar
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    Conference
  • Date:20WednesdayMay 2015

    Daily rhythms in intracellular organelles

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    Time
    10:00 - 10:30
    Location
    Gerhard M.J. Schmidt Lecture Hall
    Lecture Hall
    Lecturer
    Rona Aviram
    Members-Department of Biological Chemistry-WIS
    Organizer
    Department of Biomolecular Sciences
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    Lecture
  • Date:20WednesdayMay 2015

    Forum on Mathematical Principles in Biology

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    Time
    10:00 - 10:00
    Title
    On Competition and Cooperation in Gene Regulation
    Location
    Arthur and Rochelle Belfer Building for Biomedical Research
    Botnar Auditorium
    Lecturer
    Eran Segal
    Departments of Computer Science And Applied Mathematics, and Molecular Cell Biology
    Organizer
    Department of Molecular Cell Biology
    System Biology
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    Lecture
  • Date:20WednesdayMay 2015

    How will the James Webb Space Telescope measure First Light, Reionization, and Galaxy Assembly: The New Frontier after Hubble

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    Time
    10:15 - 11:15
    Location
    Nella and Leon Benoziyo Physics Building
    Benoziyo Center for Astrophysics Seminar Room
    Lecturer
    Rogier A. Windhorst, Arizona State University
    Organizer
    Nella and Leon Benoziyo Center for Astrophysics
    Contact
    AbstractShow full text abstract about I will review how the 6.5 meter James Webb Space Telescope (...»
    I will review how the 6.5 meter James Webb Space Telescope (JWST) --- after its
    launch in 2018 --- can measure the epochs of First Light, Reionization, Galaxy
    Assembly, and Supermassive Black-Hole Growth, building on recent results from the
    Hubble Wide Field Camera 3.

    First, I'll briefly summarize the significant technical progress on the design
    and fabrication of JWST: more than 98% of its launch mass has been built, passed
    final design, or is being built as of spring 2015. All JWST's 18 flight mirrors
    have been gold-coated with an optical performance that meets or exceed specs. All
    of JWST's scientific instruments were delivered to NASA GSFC and tested from mid
    2013--2015. I will briefly summarize the path from today till launch, planned
    with an Ariane V for October 2018.

    Next, I will briefly review the search for the first galaxies at redshifts z=9-11
    (age ~0.5 Gyr) in the Hubble UltraDeep and Frontier Fields, and their current
    limitations. I will show what combination of area, depth, and wavelength coverage
    are needed for JWST to detect a sufficient number of First Light objects, and to
    measure their evolving luminosity function (LF). JWST will map the epoch of First
    Light through the so-called Population III-star dominated objects at redshifts
    z~8--15, and its transition to the first Pop II stars in dwarf galaxies at z~<9.
    JWST will measure the evolution of the Schechter LF at z~6--15, when the Universe
    was 0.3--1 billion years old. A steep faint-end of the dwarf galaxy LF may have
    provided the ultraviolet flux needed to start and finish cosmic reionization.
    JWST will also image the host galaxies of the first quasars at z>6 in detail.

    I will argue that gravitational lensing by the most highly-concentrated rich
    foreground galaxy clusters will need to be used to maximize the number of First
    Light objects (z~>12-15) detected with JWST. Last, I will address how many random
    Webb Deep Fields (WDFs) may need to be observed with JWST to see First Light,
    compared to the best lensing targets.

    http://www.jwst.nasa.gov/ or http://www.asu.edu/clas/hst/www/jwst/
    Lecture

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