Pages
April 27, 2017
-
Date:06ThursdayJuly 2017Lecture
Imm Student Seminars by Yadav Sandeep Kumar & Matthias Kramer -Thursday, July 6th, 2017
More information Time 14:00 - 15:00Location Wolfson Building for Biological ResearchOrganizer Department of Systems ImmunologyContact -
Date:09SundayJuly 2017Lecture
Global Political and Economic Trends Affecting Energy Trade, Consumption and Production
More information Time 13:00 - 13:00Title Sustainability And Energy Research Initiative (SAERI) Seminar SeriesLocation Gerhard M.J. Schmidt Lecture HallLecturer Prof. Brenda Shaffer
Visiting Researcher, Georgetown University and Senior Fellow, Global Energy Center, Atlantic Council, Washington, DC.Organizer Weizmann School of ScienceContact -
Date:10MondayJuly 2017Lecture
Exploring the Synthesis and Applications of Graphene
More information Time 11:00 - 12:00Location Perlman Chemical Sciences BuildingLecturer Prof. Richard B. Kaner
Department of Chemistry and Biochemistry, UCLAOrganizer Department of Molecular Chemistry and Materials ScienceContact -
Date:10MondayJuly 2017Lecture
Special Chemical Physics Seminar
More information Time 14:00 - 14:00Title The Dirac electron: spin, size, mass, charge, and universal constantsLocation Perlman Chemical Sciences BuildingLecturer Prof. Jean Maruani
CNRS & UPMCOrganizer Department of Chemical and Biological PhysicsContact -
Date:11TuesdayJuly 2017Lecture
Simple integration of asymmetric inputs computes directional selectivity in Drosophila
More information Time 12:30 - 12:30Location Nella and Leon Benoziyo Building for Brain ResearchLecturer Eyal Gruntman
Postdoc, Reiser Lab, HHMI, Janelia Research CampusOrganizer Department of Brain SciencesContact Abstract Show full text abstract about The detection of visual motion is a fundamental neuronal com...» The detection of visual motion is a fundamental neuronal computation that serves many critical behavioral roles, such as encoding of self-motion or figure-ground discrimination. For a neuron to extract directionally selective (DS) motion information from inputs that are not motion selective it is essential to integrate across multiple spatially distinct inputs. This integration step has been studied for decades in both vertebrate and invertebrate visual systems and given rise to several competing computational models. Recent studies in Drosophila have identified the 4th-order neurons, T4 and T5, as the first neurons to show directional selectivity. Due to the small size of these neurons, recordings have been restricted to the use of calcium imaging, limiting timescale and direct measurement of inhibition. These limitations may prevent a clear demonstration of the neuronal computation underlying DS, since it may depend on millisecond-timescale interactions and the integration of excitatory and inhibitory signals. In this study, we use whole cell in-vivo recordings and customized visual stimuli to examine the emergence of DS in T4 cells. We record responses both to a moving bar stimulus and to its components: single position bar flashes. Our results show that T4 cells receive both excitatory and inhibitory inputs, as predicted by a classic circuit model for motion detection. Furthermore, we show that by implementing a passive compartment model of a T4 cell, we can account not only for the DS response of the cell, but also for its dynamics. -
Date:11TuesdayJuly 2017Lecture
AMO Special Seminar
More information Time 13:15 - 13:15Title The temporal structure of ultra-fast rogue wavesLocation Edna and K.B. Weissman Building of Physical SciencesLecturer Dr. Moti Fridman Organizer Department of Physics of Complex SystemsContact Abstract Show full text abstract about Extreme waves suddenly appearing from noisy background and d...» Extreme waves suddenly appearing from noisy background and disappearing immediately after. Ancient tales from sailors on such waves were told but considered as a pure myth. We investigate the dynamics of optical rogue waves in a record high resolution and focused on their power dependence and vectorial nature. We demonstrated three types of rogue waves and claim that all known mechanisms can not explain our findings, and therefore, a new mechanism must be considered. -
Date:11TuesdayJuly 2017Lecture
“The Power of Small Molecules to Explain How We See and How We Think”
More information Time 14:00 - 15:00Title Joint Seminar- Organic Chemistry & Structural BiologyLocation Helen and Milton A. Kimmelman BuildingLecturer Prof. Nasri Nesnas, Miri Nakar
Department of Chemistry Florida Institute of TechnologyOrganizer Department of Molecular Chemistry and Materials Science , Department of Chemical and Structural BiologyContact Abstract Show full text abstract about Vision is inarguably the most dependable of the five senses....» Vision is inarguably the most dependable of the five senses. The retina contains light sensing protein receptors (rhodopsins) that incorporate a small polyene molecule derivative of vitamin A, known as 11-cis-retinal. Major clues on understanding the visual cycle have been established through the design of variations of the vitamin A light absorbing molecule, some of which will be presented. A detailed understanding of the inner workings of rhodopsin is not only critical from the stand point of solving mysteries of visual diseases, like Age-related Macular Degeneration (the leading cause of blindness), but also serves as a well established model for elucidating the mechanism of other G-protein coupled receptors (GPCRs). Furthermore, we show that the value of light absorbing molecules expands beyond vision and can be used to trigger neurons thereby aiding the delineation of complex neural networks. -
Date:12WednesdayJuly 2017Lecture
Developmental Club Series 2016-2017
More information Time 10:00 - 11:00Title Towards anatomical and transcriptional profiling of intact organs with tissue clearing and custom microscopyLocation Arthur and Rochelle Belfer Building for Biomedical ResearchLecturer Alon Greenbaum
California Institute of Technology. Division of Biology and Biological EngineeringOrganizer Department of Molecular GeneticsContact -
Date:13ThursdayJuly 2017Lecture
Imm Student Seminar by Dr. Assaf Weiner
More information Time All dayLocation Wolfson Building for Biological ResearchOrganizer Department of Systems ImmunologyContact -
Date:13ThursdayJuly 2017Lecture
Virology Club speacial guest seminar
More information Time 12:15 - 12:15Title “Probing the Skin Microbiome in Primary Immunodeficiency Using Shotgun Metagenomics”Location Arthur and Rochelle Belfer Building for Biomedical ResearchLecturer Dr. Osnat Tirosh
National Human Genome Research Institute National Institutes of Health, Bethesda, MDOrganizer Department of Molecular GeneticsContact -
Date:16SundayJuly 201718TuesdayJuly 2017Conference
Algebraic Modes of Representations - The Canicular Days
More information Time 08:00 - 18:00Location Jacob Ziskind BuildingChairperson Maria GorelikHomepage -
Date:16SundayJuly 201718TuesdayJuly 2017Conference
Algebraic Modes of Representations ? The Canicular Days
More information Time 08:00 - 08:00Title Algebraic Modes of Representations ? The Canicular DaysLocation Jacob Ziskind BuildingChairperson Maria GorelikHomepage Contact -
Date:17MondayJuly 2017Conference
IVS-MRS Student Conference
More information Time 08:00 - 08:00Location The David Lopatie Conference CentreChairperson Michael KulbakHomepage -
Date:17MondayJuly 2017Lecture
The Host Pathogen Interactions Club
More information Time 10:00 - 11:00Title Mapping and modeling of microbial cellular networksLocation Max and Lillian Candiotty BuildingLecturer Prof. James Galagan
Boston UniversityOrganizer Department of Immunology and Regenerative BiologyContact -
Date:18TuesdayJuly 2017Conference
New Horizons in Immune Dynamics
More information Time 08:00 - 18:00Location The David Lopatie Conference CentreChairperson Avital BarakHomepage -
Date:18TuesdayJuly 2017Lecture
AMO Special Seminar
More information Time 13:15 - 13:15Title Towards high precision frequency comb spectroscopy in the extreme ultravioletLocation Edna and K.B. Weissman Building of Physical SciencesLecturer Dr. Gil Porat
JILA & University of Colorado, BoulderOrganizer Department of Physics of Complex SystemsContact Abstract Show full text abstract about High precision spectroscopy of few-electron atoms and ions i...» High precision spectroscopy of few-electron atoms and ions is strongly motivated by the need to test fundamental theory (e.g., quantum electrodynamics) in simple systems, amenable to precise calculation for comparison with experimental measurement. Additionally, transitions from the ground state are most susceptible to both QED and nuclear structure effects, making them appealing as tools for testing nuclear structure theory. The frequencies of transitions from the ground state in many such systems reside in the extreme ultraviolet range of the electromagnetic spectrum (XUV, wavelengths of 10-120 nm). However, spectroscopic resolution in the XUV is severely limited by the availability of appropriate sources of XUV radiation. In this talk I will discuss our experimental method of generating an XUV frequency comb laser, and our progress in scaling up the power of this laser in order to enable the highest spectroscopic precision in the XUV to date. -
Date:19WednesdayJuly 201728FridayJuly 2017Conference
SRitp workshop Hammers and Nails - Machine Learning and HEP
More information Time 08:00 - 08:00Location Nella and Leon Benoziyo Physics LibraryChairperson Eilam GrossOrganizer Department of Particle Physics and AstrophysicsHomepage -
Date:19WednesdayJuly 2017Lecture
Polyanionic Cathode Materials for High Energy-density Li-ion Batteries
More information Time 11:00 - 12:00Location Perlman Chemical Sciences BuildingLecturer Dr. Prabeer Barpanda
Indian Institute of Science, BangaloreOrganizer Department of Molecular Chemistry and Materials ScienceContact -
Date:20ThursdayJuly 2017Cultural Events
Kofico - Children's theater
More information Time 17:30 - 17:30Location Michael Sela AuditoriumContact -
Date:23SundayJuly 2017Lecture
AMO Special Seminar
More information Time 11:00 - 11:00Title Dipolar quantum droplets and stripes in dysprosium Bose-Einstein condensatesLocation Edna and K.B. Weissman Building of Physical SciencesLecturer Dr. Igor Ferrier-Barbut
5. Physikalisches Institut, Universität Stuttgart and IQSTOrganizer Department of Physics of Complex SystemsContact Abstract Show full text abstract about I will present experimental results on magnetic quantum flui...» I will present experimental results on magnetic quantum fluids. These consist of a dilute Bose-Einstein condensate of dysprosium atoms, the most magnetic stable element. They allow to study the many-body consequences of the anisotropic and long-range dipole-dipole interaction, benefitting from the control tools of ultracold atomic physics.
First, we have observed in this system an unanticipated phase-transition between a gas and a liquid, characterized by the formation of self-bound droplets [1-3]. It forms in a parameter region where the existing theory, based on the mean-field approximation, predicted a mechanical collapse of the gas. We showed that the repulsive beyond meanfield corrections prevent the collapse and are responsible for the stabilization of the liquid [2]. These corrections arise from quantum fluctuations (zero-point motion) of the collective modes (Bogolyubov sound modes) in the quantum fluid.
In recent work we show that in constrained geometries, the ground-state is selforganized (left image). Studying these geometries experimentally, we indeed observe stable self-organized ‘stripe’ phases (right image), likely in metastable excited states. I will discuss the prospects for a strange kind of supersolidity in this system. In other experiments we study the effect of a rotating magnetic field on a quantum droplet, as a tool for the study of the different low-lying collective modes of the system.
[1] Observing the Rosensweig instability of a quantum ferrofluid, H. Kadau, M. Schmitt, M. Wenzel, C. Wink, T. Maier, I. Ferrier-Barbut, and T. Pfau, Nature 530, 194 (2016).
[2] Observation of quantum droplets in a strongly dipolar Bose gas, I. Ferrier-Barbut, H. Kadau, M. Schmitt, M. Wenzel, and T. Pfau, Phys. Rev. Lett. 116, 215301 (2016).
[3] Self-bound droplets of a dilute magnetic quantum liquid, M. Schmitt, M. Wenzel, F. Böttcher, I. Ferrier-Barbut and T. Pfau, Nature 539, 259 (2016).