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May 01, 2015
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Date:01FridayMay 2015Lecture
Novel coupled cluster approaches for weak and strong correlations
More information Time 10:00Location Perlman Chemical Sciences Building
Room 404Lecturer Prof. Gustavo Scuseria
Dept. of Chemistry, Rice UniversityOrganizer Department of Molecular Chemistry and Materials ScienceContact -
Date:03SundayMay 201504MondayMay 2015Conference
Stress, PTSD and Psychiatric Disorders: From Basic Science to Theraputic Intervention
More information Time 08:00 - 19:00Location David Lopatie Conference Centre
Kimmel AuditoriumHomepage -
Date:03SundayMay 2015Lecture
Molecular Mechanisms ofTranscription in the Third Domain – from molecules to systems
More information Time 10:00Location Arthur and Rochelle Belfer Building for Biomedical Research
Botnar AuditoriumLecturer Prof. Finn Werner
Structural and Molecular Biology, University College London, London, UKOrganizer Department of Molecular GeneticsContact Abstract Show full text abstract about Our laboratory is applying an interdisciplinary and multi sc...» Our laboratory is applying an interdisciplinary and multi scalar approach to characterise the molecular mechanisms of transcription and in particular of multisubunit RNA polymerases (RNAPs). We explore model systems from the third domain of life, the Archaea, not only because they are fascinating organisms in their own right but because their transcription apparatus is a model system for – and more biochemically tractable than - eukaryotic RNAPII. Today I will present progress in our understanding of (i) the architecture of transcription initiation complexes, (ii) conformational dynamics of RNAP during the transcription cycle, and (iii) the whole genome-distribution of the basal transcription apparatus and transcription start site mapping. This analysis reveals the underlying molecular nature of the spontaneous DNA melting in archaea, which requires ATP hydrolysis in the RNAPII system. Our data furthermore show that the dynamic recruitment and release of basal factors that guide RNAP through the transcription cycle is modulated by the coupling of transcription and translation, of RNAPs and ribosomes. -
Date:03SundayMay 2015Lecture
Saturn > Jupiter: Why Saturn has polar cyclones and why Jupiter may not.
More information Time 11:00Location Sussman Family Building for Environmental Sciences
M. Magaritz Seminar RoomLecturer Morgan O'Neill
Department of Earth and Planetary Sciences Weizmann Institute of ScienceOrganizer Department of Earth and Planetary SciencesContact Abstract Show full text abstract about The poles of Saturn, Uranus and Neptune each have a 'ho...» The poles of Saturn, Uranus and Neptune each have a 'hot spot' that is observable from Earth. Saturn, which has been observed in great detail by the orbiting Cassini mission, exhibits Earth-sized hurricane-like cyclones on each pole. These massive cyclones have been present since they were first observed in 2004 and may be permanent. Our study proposes a mechanism for their creation: numerous small, moist convective thunderstorms. These thunderstorms are ubiquitous small scale features on Jupiter and Saturn. Hundreds of simulations suggest that these very small, short-lived storms can build and maintain a deep, rapid, large polar cyclone like we see on Saturn. Furthermore, an exploration of cyclone sensitivity to the deformation radius and total energy input suggests that Uranus and Neptune have transient polar cyclones, and Jupiter will not exhibit them. This last prediction will be tested for the first time next year, when the NASA Juno mission reaches Jupiter and finally observes the Jovian poles.
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Date:03SundayMay 2015Lecture
Chemical Physics Lunch Club Seminar
More information Time 12:30Title Molecular Collisions coming into FocusLocation Gerhard M.J. Schmidt Lecture HallLecturer Sebastiaan Y.T. van de Meerakker
Radboud University, Nijmegen, NetherlandsOrganizer Department of Chemical and Biological PhysicsContact Abstract Show full text abstract about The study of molecular collisions with the highest possible ...» The study of molecular collisions with the highest possible detail has been an important research theme in physical chemistry for decades. Over the last years we have developed methods to get improved control over molecules in a molecular beam [1]. With the Stark decelerator, a part of a molecular beam can be selected to produce bunches of molecules with a computer-controlled velocity and with longitudinal temperatures as low as a few mK. The molecular packets that emerge from the decelerator have small spatial and angular spreads, and have almost perfect quantum state purity. These tamed molecular beams allow for crossed beam scattering experiments with unprecedented levels of precision and sensitivity [2,3].
I will discuss our most recent results on the combination of Stark deceleration and velocity map imaging. The narrow velocity spread of Stark-decelerated beams results in scattering images with an unprecedented sharpness and angular resolution. This has facilitated the observation of diffraction oscillations in the state-to-state differential cross sections for collisions of NO with rare gas atoms [4]. Observed features in the diffraction pattern result from subtle quantum interference effects, and appear extremely sensitive to the potential energy surfaces governing the scattering process [5].
[1] S.Y.T. van de Meerakker, H.L. Bethlem, G. Meijer, Nature Physics 4, 595 (2008).
[2] J.J. Gilijamse, S. Hoekstra, S.Y.T. van de Meerakker, G.C. Groenenboom, G. Meijer,
Science 313, 1617 (2006).
[3] M. Kirste, X. Wang, H.C. Schewe, G. Meijer, K. Liu, A. van der Avoird, L.M.C.
Janssen, K.B. Gubbels, G.C. Groenenboom, S.Y.T. van de Meerakker,
Science 338, 1060 (2012).
[4] A. von Zastrow, J. Onvlee, S.N. Vogels, G.C. Groenenboom, A. van der Avoird,
S.Y.T. van de Meerakker, Nature Chemistry 6, 216 (2014).
[5] S.N. Vogels, J. Onvlee, A. von Zastrow, G.C. Groenenboom, A. van der Avoird,
S.Y.T. van de Meerakker, Phys. Rev. Lett. 113, 263202 (2014).
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Date:03SundayMay 2015Lecture
The road to recovery: the function of Runx1 in muscle regeneration
More information Time 13:00Location Arthur and Rochelle Belfer Building for Biomedical Research
Botnar AuditoriumLecturer Kfir Umansky
Yoram Groner's group, Dept. of Molecular Genetics, WISOrganizer Life SciencesContact -
Date:03SundayMay 2015Lecture
Cracking Mesoscopic Coding Principles in the Human Brain with Ultra-High Field Functional Magnetic Resonance Imaging
More information Time 14:00 - 17:00Location Gerhard M.J. Schmidt Lecture HallLecturer Prof. Dr. Rainer Goebel
Maastricht UniversityOrganizer Department of Brain SciencesContact Details Show full text description of Series of talks by 3 speakers Host: Prof. Noam Sobel, Dep...» Series of talks by 3 speakers
Host: Prof. Noam Sobel, Dept of Neurobiology -
Date:03SundayMay 2015Lecture
Towards mapping the Human Brain: imaging function and connectivity from cortical columns to whole brain
More information Time 14:00 - 17:00Location Gerhard M.J. Schmidt Lecture HallLecturer Prof. Kamil Ugurbil
University of MinnesotaOrganizer Department of Brain SciencesContact Details Show full text description of Series of talks by 3 speakers Host: Prof. Noam Sobel, Dep...» Series of talks by 3 speakers
Host: Prof. Noam Sobel, Dept of Neurobiology -
Date:03SundayMay 2015Lecture
Understanding and Controlling 3D Assembly at the Nanoscale: Directed Assembly of Block Copolymers
More information Time 14:00Location Perlman Chemical Sciences Building
Room 404Lecturer Dr. Tamar Segal-Peretz
Institute for Molecular Engineering, University of ChicagoOrganizer Department of Molecular Chemistry and Materials ScienceContact Details Show full text description of Nanostructures are considered the building blocks for many...»
Nanostructures are considered the building blocks for many technological applications such as photovoltaic, energy storage, and semiconductor devices. To meet the demands of these applications, precise control over the nanoscale dimensions and tailored functionality of the nanostructure is needed. Self-assembly of polymers, nanoparticles, and DNA can reach the desired nanometric dimension with scalable manufacturing processes, and is therefore considered a promising pathway for nanostructure formation. Among the challenges to realize this promise are: (1) the ability to control the assembly in three dimensions, and (2) engineering the nanostructure functionality and improving its performance.
In this talk, I will discuss methods for controlling the three-dimensional assembly of block-copolymers (BCP) using chemical patterning, and will demonstrate how better understanding of the 3D structure can be achieved through transmission electron microscopy (TEM) tomography. Functionalization of the BCP nanostructure was performed by selectively growing metal oxide in one microdomain of the BCP. This selective growth was also utilized as a new staining technique for angular dark field (ADF) scanning TEM (STEM) imaging of BCPs. By employing ADF-STEM tomography, we were able to resolve and gain insights into grain boundaries and defects in perpendicular self-assembled cylinders, the morphology of self-assembled and directed self-assembled sphere-forming BCP films, and the nanostructure of directed assembled lamellae. By combining the knowledge obtained from the tomography with design of chemical patterns and boundary conditions, control over the BCP morphology in 3D was achieved.
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Date:03SundayMay 2015Lecture
Optogenetic fMRI to probe dopaminergic circuits
More information Time 14:00 - 17:00Location Gerhard M.J. Schmidt Lecture HallLecturer Prof. Gary Glover
Stanford UniversityOrganizer Department of Brain SciencesContact Details Show full text description of Series of talks by 3 speakers Host: Prof. Noam Sobel, Dep...» Series of talks by 3 speakers
Host: Prof. Noam Sobel, Dept of Neurobiology -
Date:04MondayMay 2015Lecture
Thiophene Rust in Organic Electronics
More information Time 11:00 - 12:00Location Helen and Milton A. Kimmelman Building
Dov Elad RoomLecturer Prof. Luis Campos
From Columbia University, New York, USAOrganizer Department of Molecular Chemistry and Materials ScienceContact -
Date:04MondayMay 2015Lecture
Student Seminar
More information Time 12:15Title Nitric oxide controls a switch between degenerative and regenerative phases of developmental neuronal remodeling & The role of mutant p53 in the tumorigenesis of mesenchymal stem cellsLocation Arthur and Rochelle Belfer Building for Biomedical ResearchLecturer Gabriela Koifman + Dana RabinovichOrganizer Department of Molecular Cell BiologyContact -
Date:04MondayMay 2015Lecture
Cancer Meets Epitranscriptomics
More information Time 14:00Location Max and Lillian Candiotty Building
Seminar RoomLecturer PROF. GIDI RECHAVI
SHEBA MEDICAL CENTER TEL HASHOMEROrganizer Department of Immunology and Regenerative BiologyContact Abstract Show full text abstract about In the last decade advances in Next Generation Sequencing an...» In the last decade advances in Next Generation Sequencing and bioinformatics enabled the unraveling of global RNA modifications and editing. The evolving field of epitranscriptomics proved to be important in cell fate decisions, normal development and disease.
The lecture will deal with A to I editing-based mechanisms relevant to cancer and with the emerging role
of m6A methylation in the precise regulation of early embryonic development. -
Date:04MondayMay 2015Lecture
The principles of kinetic theory for granular
More information Time 14:15Location Edna and K.B. Weissman Building of Physical Sciences
Room ALecturer Massimo Tessarotto - University of TriesteOrganizer Department of Physics of Complex Systems
Statistical Physics SeminarContact Details Show full text description of Although Boltzmann.s equation is 143 years old, certain aspe...» Although Boltzmann.s equation is 143 years old, certain aspects of its derivation have remained for a long time unsatisfactory. To be able to identify them requires, however, changing the customary perspective taken usually in the prevailing mathematical literatu- re and to start, instead, from a first-principle approach based on the axioms of Classical Statistical Mechanics (CSM). Based on the emerging new axiomatic approach to CSM recently achieved [1,2] in this presentation the problem is reviewed of determining an ex-
act, i.e., non-asymptotic, statistical description holding for classical granular matter. The latter is described in terms of a finite N-body system formed by smooth hard spheres, i.e., when both the number of particles N forming and their diameter d remain arbitrary while being still considered finite. This means that parameters N and _d remain essentially free. So the same equation still holds, in particular, in the case of:
a) granular fluids, namely when N is taken N >>_ 1; with both N and d still being considered as finite, while _d is taken of order O(1) and independent of N.
b) dilute gases, i.e., in which N and _d satisfy the so-called dilute gas ordering (Grad,1958)
Based on the introduction of suitable modified collision boundary conditions (MCBC), it is shown that an exact kinetic equation, denoted as Master kinetic equation [3,4,5], actually exists which advances in time the 1-body (kinetic) probability density function (PDF). Hence, theMaster equation provides a rigorous statistical treatment of the molecular dyna- mics occurring in these systems for arbitrary values of N and _ d; even for granular fluids and/or dilute gases. Such an equation di¤ers from the customary Boltzmann and Enskog equations. Nevertheless, in the dilute-gas ordering the Master equation is found to recover in a suitable asymptotic sense the customary Boltzmann equation [3].
References
1 - Massimo Tessarotto, Claudio Cremaschini and Marco Tessarotto, Eur.
Phys. J. Plus 128, 32 (2013).
2 - M. Tessarotto and C. Cremaschini, Phys. Lett. A 378, 1760 (2014).
3 - M. Tessarotto and C. Cremaschini, Eur. Phys. J. Plus 129, 157 (2014).
4 - M. Tessarotto and C. Cremaschini, Eur. Phys. J. Plus 129, 243 (2014).
5 - M. Tessarotto and C. Cremaschini, Theory of collisional invariants for the
Master kinetic equation, Phys. Lett. A (2015), DOI: 10.1016/j.physleta.2015.02.024.
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Date:04MondayMay 2015Lecture
Search for Time-Reversal-Violation in atom traps"
More information Time 14:45 - 15:00Location Tel Aviv UniversityLecturer Danny Ashery
Tel-Aviv UniversityOrganizer Department of Particle Physics and Astrophysics
Nuclear Physics Joint SeminarContact Details Show full text description of 14:45 - 15:00 Refreshments ...» 14:45 - 15:00 Refreshments
Abstract Show full text abstract about Several ways to search for time-reversal-violation in beta d...» Several ways to search for time-reversal-violation in beta decay of trapped nuclei will be reviewed. The newly upgraded TRINAT trap system will be described showing the high sensitivity required for such a search. The experimental plans for such experiments will be described. -
Date:04MondayMay 2015Lecture
The Curious Case of Tantalum 180
More information Time 16:15 - 17:15Location Tel Aviv UniversityLecturer Naftali Auerbach
Tel Aviv UniversityOrganizer Department of Particle Physics and Astrophysics
Nuclear Physics Joint SeminarContact Details Show full text description of 16:00 - 16:30 Coffee Break...» 16:00 - 16:30 Coffee BreakAbstract Show full text abstract about The Ta 180m nucleus is the rarest naturally occurring isotop...» The Ta 180m nucleus is the rarest naturally occurring isotope. It exists in an isomeric state with half-life time of 1.2 10**15 years, at an excitation energy of 77 keV and spin J=9. We study the possibility that when irradiated by gamma rays or subjected to Coulomb excitation its decay can be accelerated by the existence of a doorway. We describe the mechanism of such a decay similar to the chaos-assisted tunneling. -
Date:05TuesdayMay 2015Lecture
DELLA, SPY and hormone signaling in tomato and Arabidopsis
More information Time 11:15Location Ullmann Building of Life Sciences
Aharon Katzir HallLecturer Prof. David Weiss
Institute of Plant Sciences and Genetics, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of JerusalemOrganizer Department of Plant and Environmental SciencesContact Details Show full text description of Website: http://departments.agri.huji.ac.il/plantscience/sta...» Website: http://departments.agri.huji.ac.il/plantscience/staff-eng/duduweiss
Host: Prof. Meir Edelman -
Date:05TuesdayMay 2015Lecture
The interaction of synaptic plasticity and scaling and their role in memory dynamics
More information Time 12:30Location Gerhard M.J. Schmidt Lecture HallLecturer Dr. Christian Tetzlaff
Bernstein Center for Computational Neuroscience, Max-Planck Institute for Dynamics and Self-Organization, GottingenOrganizer Department of Brain SciencesContact Abstract Show full text abstract about Many experiments provide evidences that, after learning, hum...» Many experiments provide evidences that, after learning, human and animal memories are very dynamic and changeable. Amongst others, one intriguing and counterintuitive effect is the destabilization of memories by recalling them. In addition, some of these destabilized memories can be ‘rescued’ by sleep-induced consolidation while others not. Up to now, the basic principles underlying these effects are widely unknown. In this talk I will present our theoretical model in which the interaction between the biologically well-established processes of synaptic plasticity and scaling enables the formation of memories or rather Hebbian cell assemblies in neural networks. Furthermore, we can show that the dynamics of these cell assemblies are comparable to the intriguing dynamics of human and animal memories described above. Thus, this model serves as a further step to link biological processes on the neuronal scale to behavior on the psychological level.
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Date:06WednesdayMay 2015Lecture
Mapping the resistance potential of Influenza against an antiviral
More information Time 10:00 - 11:00Location Gerhard M.J. Schmidt Lecture Hall
Lecture HallLecturer Prof. Isaiah (Shy) Arkin
Dept. of Biol. Chem., Hebrew Univ. of JerusalemOrganizer Department of Biomolecular SciencesContact -
Date:06WednesdayMay 2015Lecture
Forum on Mathematical Principles in Biology
More information Time 10:00 - 11:00Title Can we realize Lamarckian evolution in the lab?Location Arthur and Rochelle Belfer Building for Biomedical Research
Botnar AuditoriumLecturer Tzachi Pilpel
Dept of Molecular GeneticsOrganizer Department of Molecular Cell Biology
System BiologyContact