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פברואר 18, 2016
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Date:22שלישימרץ 2016הרצאה
Chemical Physics Department Guest Seminar
More information שעה 11:00 - 11:00כותרת Clusters as Surfacesמיקום אולם הרצאות ע"ש גרהרד שמידטמרצה Gereon Niedner-Schatteburg
Technische Universitat Kaiserslautern, Germanyמארגן המחלקה לפיזיקה כימית וביולוגיתצרו קשר תקציר 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
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Date:22שלישימרץ 2016הרצאה
Prey sensing by the obligate predatory bacterium Bdellovibrio bacteriovorus
More information שעה 11:15 - 11:15מיקום בניין אולמן למדעי החייםמרצה Prof. Edouard Jurkevitch
The Department of Plant Pathology and Microbiology, Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalemמארגן המחלקה למדעי הצמח והסביבהצרו קשר -
Date:22שלישימרץ 2016הרצאה
Colouring Labelled Lines: Multispectral Mapping and Activity-Dependent Silencing of Primary Afferents as Tools to follow up their Reorganization in Chronic Pain
More information שעה 12:30 - 12:30מיקום אולם הרצאות ע"ש גרהרד שמידטמרצה Dr. Alexander Binshtok
Dept of Medical Neurobiology, Institute for Medical Research Israel Canada Faculty of Medicine, Safra Center for Brain Sciences, The Hebrew University, Jerusalemמארגן המחלקה למדעי המוחצרו קשר -
Date:22שלישימרץ 2016הרצאה
Post-translational modifications as studied by methods for genetic code expansion
More information שעה 14:00 - 14:00מיקום בניין הלן ומילטון קימלמןמרצה Dr. Eyal Arbeli
Department of Chemistry Ben Gurion Universityמארגן המחלקה לביולוגיה מבנית וכימיתצרו קשר -
Date:23רביעימרץ 2016הרצאה
Shaping the bones while connecting to tendons
More information שעה 10:00 - 10:00מיקום בניין ארתור ורושל בלפר למחקר ביורפואימרצה Prof. Elazar Zelzer
Dept. of Molecular Genetics, WISצרו קשר -
Date:23רביעימרץ 2016הרצאה
Chemical Physics Department Guest Seminar
More information שעה 15:00 - 15:00כותרת Quantum computers - is the future here?מיקום אולם הרצאות ע"ש גרהרד שמידטמרצה Prof. Tal Mor
Technionמארגן המחלקה לפיזיקה כימית וביולוגיתצרו קשר תקציר 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.
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Date:24חמישימרץ 2016הרצאה
Quantitative morphogenesis of epithelial tissue in Drosophila
More information שעה 13:00 - 13:00מיקום בניין ארתור ורושל בלפר למחקר ביורפואימרצה Prof. Joerg Grosshans
Department of Developmental Biochemistry School of Medicine, University of Göttingenמארגן המחלקה לגנטיקה מולקולריתצרו קשר -
Date:27ראשוןמרץ 201629שלישימרץ 2016כנסים
WEIZMANN-ALBERTA NANOMEETING
More information שעה כל היוםמיקום מרכז המבקרים ע"ש ברברה ומוריס לוינסוןיושב ראש Ernesto Joselevichדף בית צרו קשר -
Date:27ראשוןמרץ 2016הרצאה
Chemical Physics Department Guest Seminar
More information שעה 10:00 - 10:00כותרת Slow relaxations and memory in disordered mechanical systemsמיקום בניין הלן ומילטון קימלמןמרצה Dr Yoav Lahini
Massachusetts Institute of Technology - MITמארגן המחלקה לפיזיקה כימית וביולוגיתצרו קשר תקציר 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.
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Date:27ראשוןמרץ 2016הרצאה
Metabolomics as powerful analytics tool
More information שעה 11:00 - 12:00מיקום בניין ארתור ורושל בלפר למחקר ביורפואימרצה Mr. Alexander Schifrin
Metabolomic Discoveries GmbH, Potsdam, Germanyצרו קשר -
Date:27ראשוןמרץ 2016הרצאה
The Air Quality impacts of North American Oil and Natural Gas Development
More information שעה 11:00 - 11:00מיקום בניין משפחת זוסמןמרצה Steve Brown מארגן המחלקה למדעי כדור הארץ וכוכבי הלכתצרו קשר -
Date:27ראשוןמרץ 2016הרצאה
The Role of Filopodia in Muscle Cell Fusion
More information שעה 13:00 - 13:00מיקום בניין ארתור ורושל בלפר למחקר ביורפואימרצה Dagan Segal
Benny Shilo's group, Dept. of Molecular Genetics, WISמארגן המחלקה לגנטיקה מולקולריתצרו קשר -
Date:27ראשוןמרץ 2016הרצאה
Clore Seminar on Soft and Biological Physics
More information שעה 13:00 - 13:00כותרת The Geometry and Mechanics of Growing Elastic Sheetsמיקום בניין הפיזיקה ע"ש עדנה וק.ב. וייסמןמרצה Prof. Eran Sharon
The Racah Institute of Physics The Hebrew University of Jerusalemמארגן המחלקה לפיזיקה של מערכות מורכבותצרו קשר תקציר 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.
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Date:27ראשוןמרץ 2016הרצאה
Imaging bacterial chemotaxis, from population to single molecules
More information שעה 15:00 - 16:00מיקום בניין קמיליה בוטנארמרצה Oshri Afanzar
Group of Prof. Michael Eisenbach- Department of Biological Chemistryמארגן המחלקה לתשתיות מחקר מדעי החייםצרו קשר -
Date:28שנימרץ 2016הרצאה
“Neutron star binaries as sources of gravitational waves an heavy r-process material”
More information שעה 14:15 - 15:15מיקום TAU, Shenkar building, room 104מרצה Danny Ashery
Tel Aviv Universityמארגן המחלקה לפיזיקה של חלקיקים ואסטרופיזיקהצרו קשר -
Date:28שנימרץ 2016הרצאה
Molecular Neuroscience Forum Seminar
More information שעה 15:00 - 16:00כותרת Neuronal mechanisms of associative learning in Drosophilaמיקום בניין ארתור ורושל בלפר למחקר ביורפואימארגן המחלקה למדעים ביומולקולרייםדף בית צרו קשר -
Date:28שנימרץ 2016הרצאה
“Possible Directions in the Study of Neutron-Rich Exotic Isotopes”
More information שעה 15:45 - 16:45מיקום TAU, Shenkar building, room 104מרצה Israel Mardor
Soreq Nuclear Research Centerמארגן המחלקה לפיזיקה של חלקיקים ואסטרופיזיקהצרו קשר תקציר 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.
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Date:28שנימרץ 2016אירועי תרבות
אסתרית בלצן - סונטת ליל ירח רומן נצחי
More information שעה 20:30 - 22:00מיקום אודיטוריום מיכאל סלעצרו קשר -
Date:29שלישימרץ 2016הרצאה
Mapping the protein modification landscape in health and disease
More information שעה 10:00 - 11:00מיקום בניין וולפסון למחקר ביולוגימרצה Prof. Yifat Merbl
Dept. of Immunologyמארגן המחלקה למדעים ביומולקולרייםצרו קשר תקציר 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.
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Date:29שלישימרץ 2016הרצאה
Small-Molecule-Mediated Bacterial and Fungal Cell Disruption
More information שעה 11:00 - 12:00מיקום בניין הלן ומילטון קימלמןמרצה Dr. Micha Fridman
Faculty of Exact Sciences Tel Aviv Universityמארגן המחלקה לכימיה מולקולרית ולמדע חומריםצרו קשר