Pages
February 18, 2016
-
Date:22TuesdayMarch 2016Lecture
Chemical Physics Department Guest Seminar
More information Time 11:00 - 11:00Title Clusters as SurfacesLocation Gerhard M.J. Schmidt Lecture HallLecturer Gereon Niedner-Schatteburg
Technische Universitat Kaiserslautern, GermanyOrganizer Department of Chemical and Biological PhysicsContact Abstract Show full text abstract about Clusters – in particular those of transition metals – may ac...» Clusters – in particular those of transition metals – may act like surfaces of limited size, this analogy being recognized long time ago [1,2]. We have studied the C-H bond activation of various organic molecules by naked transition metal clusters before [3], and it became mandatory to switch to simpler systems. By virtue of our tandem cryo ion trap instrument we study the adsorption kinetics of clusters under single collision conditions as well as the Infrared Multiple Photon Dissociation (IR-MPD) by application of optical parametric oscillator/amplifier (OPO/OPA) photon sources, one and two colour investigations of metal organic complexes by such technique being published [4].
Our ongoing studies of N2 and H2 cryo adsorption on Fe, Co, and Ni clusters and alike [5] revealed clearly discernible mono layer like adsorbate shells. Beyond such mere kinetics – though interesting in themselves – we recorded IR-MPD spectra of dinitrogen stretching vibrations within such [Mn(N2)m]+ cluster surface – adsorbate layer complexes by variation of their stoichiometry, n and of m alike, and in conjunction with electronic structure modelling (by DFT), and with synchrotron X-ray based studies of spin and orbital contributions to the total magnetic moments of the isolated clusters [6].
This invited presentation shall elucidate the current state of cluster adsorbate studies under cryo conditions and in isolation. It aims to put into perspective the findings from adsorption kinetics, IR spectroscopy, DFT modelling and magnetic spectroscopy. It concludes with an outlook onto the road ahead.
This research originates from a long standing support by the DFG through the transregional collaborative research center SFB/TRR 88 3MET.de
-
Date:22TuesdayMarch 2016Lecture
Prey sensing by the obligate predatory bacterium Bdellovibrio bacteriovorus
More information Time 11:15 - 11:15Location Ullmann Building of Life SciencesLecturer Prof. Edouard Jurkevitch
The Department of Plant Pathology and Microbiology, Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of JerusalemOrganizer Department of Plant and Environmental SciencesContact -
Date:22TuesdayMarch 2016Lecture
Colouring Labelled Lines: Multispectral Mapping and Activity-Dependent Silencing of Primary Afferents as Tools to follow up their Reorganization in Chronic Pain
More information Time 12:30 - 12:30Location Gerhard M.J. Schmidt Lecture HallLecturer Dr. Alexander Binshtok
Dept of Medical Neurobiology, Institute for Medical Research Israel Canada Faculty of Medicine, Safra Center for Brain Sciences, The Hebrew University, JerusalemOrganizer Department of Brain SciencesContact -
Date:22TuesdayMarch 2016Lecture
Post-translational modifications as studied by methods for genetic code expansion
More information Time 14:00 - 14:00Location Helen and Milton A. Kimmelman BuildingLecturer Dr. Eyal Arbeli
Department of Chemistry Ben Gurion UniversityOrganizer Department of Chemical and Structural BiologyContact -
Date:23WednesdayMarch 2016Lecture
Shaping the bones while connecting to tendons
More information Time 10:00 - 10:00Location Arthur and Rochelle Belfer Building for Biomedical ResearchLecturer Prof. Elazar Zelzer
Dept. of Molecular Genetics, WISContact -
Date:23WednesdayMarch 2016Lecture
Chemical Physics Department Guest Seminar
More information Time 15:00 - 15:00Title Quantum computers - is the future here?Location Gerhard M.J. Schmidt Lecture HallLecturer Prof. Tal Mor
TechnionOrganizer Department of Chemical and Biological PhysicsContact Abstract Show full text abstract about About thirty years ago Richard Feynman and David Deutsch c...»
About thirty years ago Richard Feynman and David Deutsch came up with the quantum computer. A decade later Peter Shor had shown the incredible power of quantum computers: He showed their ability to factorize large numbers, an ability whose technological consequences for the world of
internet encryption and banking can be devastating.
In the last four years the Wolf Prize and the Nobel Prize were given to researchers promoting quantum computing technologies, and the (only existing) startup has sold "quantum simulators" to Lockheed Martin, as well as to Google and NASA. Is the future here? Or will we have to wait for it for a few more decades? The answer depends upon whom you ask.
In this presentation I will try to clearly present the current situation of this field. I will also present the important notion of semi-quantum computing also called sub-universal quantum computing.
-
Date:24ThursdayMarch 2016Lecture
Quantitative morphogenesis of epithelial tissue in Drosophila
More information Time 13:00 - 13:00Location Arthur and Rochelle Belfer Building for Biomedical ResearchLecturer Prof. Joerg Grosshans
Department of Developmental Biochemistry School of Medicine, University of GöttingenOrganizer Department of Molecular GeneticsContact -
Date:27SundayMarch 201629TuesdayMarch 2016Conference
WEIZMANN-ALBERTA NANOMEETING
More information Time All dayLocation Barbara and Morris Levinson Visitors CenterChairperson Ernesto JoselevichHomepage Contact -
Date:27SundayMarch 2016Lecture
Chemical Physics Department Guest Seminar
More information Time 10:00 - 10:00Title Slow relaxations and memory in disordered mechanical systemsLocation Helen and Milton A. Kimmelman BuildingLecturer Dr Yoav Lahini
Massachusetts Institute of Technology - MITOrganizer Department of Chemical and Biological PhysicsContact Abstract Show full text abstract about Most every day materials can be described by a set of number...» Most every day materials can be described by a set of numbers that describe their properties – a resistor for example, is described by its resistance, a number that is useful in predicting how much current will flow through it under a given voltage. Some materials however, lack this basic characteristic. Under constant external conditions, their properties can change over many time scales, from fractions of a second to weeks and even years, without showing any sign of reaching equilibrium. Such behavior is exhibited in a strikingly similar way by very different systems, from materials such as polymers and glass to properties of interfaces leading to friction and even earthquakes. Perhaps the only common attribute to all this systems is that they are disordered. Yet, in spite of many studies that have been conducted on these recurring motifs across a broad range of systems, identifying the mechanisms underlying the unusual out-of-equilibrium dynamics of disordered systems remains an outstanding problem in condensed matter physics.
Here, I will describe several disordered soft-matter systems that exhibit a similar repertoire of far-from-equilibrium behavior, including logarithmic relaxation and the ability to hold a memory of previous conditions that can last for hours. At the same time, each one of these systems offers a way to track the evolution of the internal structure, presenting an opportunity to reveal and compare mechanisms across different systems.
-
Date:27SundayMarch 2016Lecture
Metabolomics as powerful analytics tool
More information Time 11:00 - 12:00Location Arthur and Rochelle Belfer Building for Biomedical ResearchLecturer Mr. Alexander Schifrin
Metabolomic Discoveries GmbH, Potsdam, GermanyContact -
Date:27SundayMarch 2016Lecture
The Air Quality impacts of North American Oil and Natural Gas Development
More information Time 11:00 - 11:00Location Sussman Family Building for Environmental SciencesLecturer Steve Brown Organizer Department of Earth and Planetary SciencesContact -
Date:27SundayMarch 2016Lecture
The Role of Filopodia in Muscle Cell Fusion
More information Time 13:00 - 13:00Location Arthur and Rochelle Belfer Building for Biomedical ResearchLecturer Dagan Segal
Benny Shilo's group, Dept. of Molecular Genetics, WISOrganizer Department of Molecular GeneticsContact -
Date:27SundayMarch 2016Lecture
Clore Seminar on Soft and Biological Physics
More information Time 13:00 - 13:00Title The Geometry and Mechanics of Growing Elastic SheetsLocation Edna and K.B. Weissman Building of Physical SciencesLecturer Prof. Eran Sharon
The Racah Institute of Physics The Hebrew University of JerusalemOrganizer Department of Physics of Complex SystemsContact Abstract Show full text abstract about Many natural structures are made of soft tissue that undergo...» Many natural structures are made of soft tissue that undergoes active growth. Non uniform growth of thin sheets can lead to the formation of elaborate three-dimensional configurations and to induce non trivial shape transformations. In particular, complicated configurations appear in thin sheets when growth leads to geometrical frustration.
I will present examples of different types of systems and discus different types of self-shaping principles, together with the theoretical framework of incompatible elasticity which is used to study such systems. Experimental methods for the construction of “programmed” responsive sheets will be reviewed and the connection of the topic to shape selection in chemical and biological systems, as well as to design and art, will be presented.
-
Date:27SundayMarch 2016Lecture
Imaging bacterial chemotaxis, from population to single molecules
More information Time 15:00 - 16:00Location Camelia Botnar BuildingLecturer Oshri Afanzar
Group of Prof. Michael Eisenbach- Department of Biological ChemistryOrganizer Department of Life Sciences Core FacilitiesContact -
Date:28MondayMarch 2016Lecture
“Neutron star binaries as sources of gravitational waves an heavy r-process material”
More information Time 14:15 - 15:15Location TAU, Shenkar building, room 104Lecturer Danny Ashery
Tel Aviv UniversityOrganizer Department of Particle Physics and AstrophysicsContact -
Date:28MondayMarch 2016Lecture
Molecular Neuroscience Forum Seminar
More information Time 15:00 - 16:00Title Neuronal mechanisms of associative learning in DrosophilaLocation Arthur and Rochelle Belfer Building for Biomedical ResearchOrganizer Department of Biomolecular SciencesHomepage Contact -
Date:28MondayMarch 2016Lecture
“Possible Directions in the Study of Neutron-Rich Exotic Isotopes”
More information Time 15:45 - 16:45Location TAU, Shenkar building, room 104Lecturer Israel Mardor
Soreq Nuclear Research CenterOrganizer Department of Particle Physics and AstrophysicsContact Abstract Show full text abstract about Research of neutron-rich exotic isotopes can generate signif...» Research of neutron-rich exotic isotopes can generate significant contributions to the understanding of the astrophysical rapid neutron capture process (r-process) of nucleosynthesis, and the extension of nuclear models to regions far from stability. In this talk I present an initiative to start a research program of neutron-rich exotic isotopes
in Israel.
In the short term, the plan is to study specific processes and characteristics in relevant facilities in the world. I will discuss medium- and high-energy neutron-induced fission rates and fission products distributions of several actinides, which serve as input to quantify fission recycling in the r-process; and the probabilities of beta-delayed multi-neutron emission (of applicable isotopes), which affect the beta decay chains during "freeze out", thus changing the resulting stable isotopes r-process abundances.
For the longer term, I explore the possibility of constructing a neutron-rich exotic isotopes facility at SARAF Phase II, mainly based on medium- and high-energy induced fission. Neutron induced fission has the advantage of generating isotopes with a higher neutron number, thus extending our reach to regions farther from stability. Preliminary estimations indicate that such a facility will be potent in a world competitive manner.
-
Date:28MondayMarch 2016Cultural Events
Astrith Baltsan - Moonlight Sonata eternal romance
More information Time 20:30 - 22:00Location Michael Sela AuditoriumContact -
Date:29TuesdayMarch 2016Lecture
Mapping the protein modification landscape in health and disease
More information Time 10:00 - 11:00Location Wolfson Building for Biological ResearchLecturer Prof. Yifat Merbl
Dept. of ImmunologyOrganizer Department of Biomolecular SciencesContact Abstract Show full text abstract about Ubiquitin and ubiquitin-like protein post-translational modi...» Ubiquitin and ubiquitin-like protein post-translational modifications (PTMs) are implicated in every aspect of cellular regulation. Yet, we still lack comprehensive understanding of their broad functions and the range of their cellular targets. We developed a PTM profiling platform, which establishes a broadly applicable and systematic approach to study regulation of PTMs in various biological processes and human diseases. In my talk, I will introduce this system and focus primarily on one example in which we gained mechanistic insight of PTM-based regulation of cyclin B1, which is required for proper mitotic progression.
-
Date:29TuesdayMarch 2016Lecture
Small-Molecule-Mediated Bacterial and Fungal Cell Disruption
More information Time 11:00 - 12:00Location Helen and Milton A. Kimmelman BuildingLecturer Dr. Micha Fridman
Faculty of Exact Sciences Tel Aviv UniversityOrganizer Department of Molecular Chemistry and Materials ScienceContact