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דצמבר 11, 2014
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Date:20שבתדצמבר 2014אירועי תרבות
אורי חזקיה - מופע סטנד אפ
More information שעה 21:00 - 22:30מיקום אודיטוריום מיכאל סלעצרו קשר -
Date:21ראשוןדצמבר 2014הרצאה
Plant Tissue Culture - an useful tool in advanced biotechnology
More information שעה 11:15 - 11:15מיקום בניין אולמן למדעי החייםמארגן המחלקה למדעי הצמח והסביבהצרו קשר -
Date:22שנידצמבר 2014כנסים
Conference for Physics teachers
More information שעה כל היוםמיקום מרכז כנסים על-שם דויד לופאטייושב ראש Yocheved Brestelצרו קשר -
Date:22שנידצמבר 2014הרצאה
Probing general relativity, alternative theories of gravity, and relativistic geodesy with atomic clocks
More information שעה 13:15 - 14:00מיקום בניין הפיזיקה ע"ש עדנה וק.ב. וייסמןמרצה Ruxandra Bondarescu מארגן מרכז לאסטרופיסיקה עש נלה וליאון בנוזיוצרו קשר תקציר Show full text abstract about I will discuss the applicability of atomic clocks to test ge...» I will discuss the applicability of atomic clocks to test general relativity and alternative theories of gravity for planned missions such as the Gravitational Redshift Explorer (GRESE). We assume that the spacecraft that orbits the Earth is tracked using the observed tick rate of its clock, which is then compared to the tick rate of a local clock on the ground. The spacecraft's reconstructed 4-D trajectory can reveal the nature of gravitational perturbations in the gravitational field of the Earth testing multiple relativistic effects such as frame dragging and shapiro time delay, and potentially differentiating between different theories of gravity via Parametrized Post-Newtonian Parameters (PPN). On the ground, clocks along with the most recent optical fiber technology measure ground uplift at a precision that competes with existent technology (e.g, GPS, gravimeters). This monitoring has a plethora of applications, which include closer monitoring of the solid Earth tide in areas where hydraulic fracturing is performed, and potentially better monitoring of areas with high seismic and volcanic activity.
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Date:22שנידצמבר 2014הרצאה
Shaping the blood: Lessons from Chromatin and Single cell RNA-SEQ Dynamics
More information שעה 14:00 - 14:00מיקום בניין ע"ש מקס ולילאן קנדיוטימרצה Prof. Ido Amit מארגן המחלקה לאימונולוגיה ורגנרציה ביולוגיתצרו קשר -
Date:22שנידצמבר 2014הרצאה
Non-dissipative shapable sheet
More information שעה 14:15 - 14:15מיקום בניין הפיזיקה ע"ש עדנה וק.ב. וייסמןמרצה Naomi Oppenheimer
University of Chicagoמארגן המחלקה לפיזיקה של מערכות מורכבותצרו קשר תקציר Show full text abstract about A sheet of paper that has been crumpled and flattened retain...» A sheet of paper that has been crumpled and flattened retains some amount of shapability that a bare, uncrumpled, sheet does not have: when deformed by external forces, it retains the deformed shape after the forces are removed. Using a frustrated two dimensional lattice of springs, we show that such shapability can be attained in a non-dissipative system. Numerical investigations suggest an extensive number of bistable energy minima using several variants of this scheme. The numerical sheet can be bent into a nearly-closed cylinder that holds its shape. We verify that the deformed shape is locally stable and compare its bending modulus in the deformed state with that in the initial flat state. We investigate the threshold for non-elastic deformation using various kinds of forcing. -
Date:22שנידצמבר 2014הרצאה
The Endocrinization of Biology and Medicine: A quartet of revolutions in our time
More information שעה 15:00 - 16:00מיקום בניין ארתור ורושל בלפר למחקר ביורפואימרצה Prof. Jesse Roth
The Feinstein Institute for Medical Research, USAצרו קשר -
Date:23שלישידצמבר 2014הרצאה
LS SPECIAL LECTURE
More information שעה 11:00 - 11:00מיקום אולם ע"ש דולפי ולולה אבנרמרצה Randy Levinson
Senior editor in the journal Nature Medicineצרו קשר -
Date:23שלישידצמבר 2014הרצאה
Dynamics of the Madden-Julian oscillation
More information שעה 11:00 - 11:00מיקום בניין משפחת זוסמןמרצה Adam Sobel
Department of Earth and Environmental Sciences Columbia Universityמארגן המחלקה למדעי כדור הארץ וכוכבי הלכתצרו קשר תקציר Show full text abstract about The Madden-Julian oscillation (MJO) is the dominant mode of ...» The Madden-Julian oscillation (MJO) is the dominant mode of variability in the tropics on
the intraseasonal time scale (say, 20-90 day periods) and one of the most important
coherent, quasi-periodic modes of natural variability in the global climate system altogether.
Though it was discovered over 40 years ago, we still do not understand the MJO, in the sense of
being able to state an agreed-upon, simple mathematical model that explains its basic features.
I will present evidence that the MJO is what some of us now call a "moisture mode", best
analyzed by examining the budget of moist static energy or moist entropy. I will argue that
cloud-radiative feedbacks are important to the maintenance of the MJO, while horizontal
advection of moisture is important to its eastward propagation. I will present evidence from
observations, theory, general circulation models, and cloud-resolving models to this effect.
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Date:23שלישידצמבר 2014הרצאה
"A comprehensive theoretical approach to understanding the kinetic, thermodynamic and electronic aspects of a reactive interaction"
More information שעה 11:00 - 12:00מיקום בניין הלן ומילטון קימלמןמרצה Dr. Amrit Sarmah
Birla Institute of Technology & Science, Pilaniמארגן המחלקה לכימיה מולקולרית ולמדע חומריםצרו קשר -
Date:23שלישידצמבר 2014הרצאה
Phylogenomic transduction networks reveal genetic barriers for phage-mediated gene transfer during microbial evolution
More information שעה 11:15 - 11:15מיקום בניין אולמן למדעי החייםמרצה Dr. Tal Dagan
Genomic Microbiology Group, Institute of Microbiology, Christian-Albrechts-University Kiel, Germanyמארגן המחלקה למדעי הצמח והסביבהצרו קשר -
Date:23שלישידצמבר 2014הרצאה
From ants to colonies: Individual variation in collective behavior
More information שעה 13:00 - 13:00מיקום מעבדה על-שם דני נ. היינמןמרצה Dr. Noa Pinter-Wollman
BioCircuits Institute UC San Diegoמארגן מרכז לפיזיקה ביולוגית עש קלורצרו קשר תקציר Show full text abstract about Evolution acts on individual variation. Complex biological s...» Evolution acts on individual variation. Complex biological systems, such as colonies of social insects, are aggregates of multiple agents working together towards collective, higher-order goals, producing emergent collective properties on which natural selection acts. There is no central control dictating the activities of members in the assembly. Instead, agents use local signals that determine their behavior and are received through an intricate interaction network resulting in collective phenotypes. I examine how individual variation among workers in harvester ant colonies affects the collective behavior of the colony, producing individual variation among colonies. I will present work on how the structure of the interaction network among ant workers affects the foraging regulation of colonies of the red harvester ant, Pogonmyrmex barbatus. In addition, I will discuss the causes and consequences of individual variation in the collective behavior of colonies of the black harvester ant, Messor andrei. In both cases, variation at small local scales translates into variation at the system level, creating a behaviorally diverse population.
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Date:23שלישידצמבר 2014הרצאה
Classification of spherical quadrilaterals
More information שעה 13:00 - 13:00מרצה A. Eremenko and A. Gabrielov
Purdue Universityמארגן הפקולטה למתמטיקה ומדעי המחשבצרו קשר -
Date:23שלישידצמבר 2014הרצאה
"Conformational changes in GPCR signalling"
More information שעה 14:00 - 15:00מיקום בניין הלן ומילטון קימלמןמרצה Dr. Dmitry Veprintsev
Laboratory of Biomolecular Research Paul Scherrer Institut Switzerlandמארגן המחלקה לביולוגיה מבנית וכימיתצרו קשר -
Date:24רביעידצמבר 2014הרצאה
To be announced
More information שעה 10:00 - 11:00מיקום אולם הרצאות ע"ש גרהרד שמידטמארגן המחלקה למדעים ביומולקולרייםצרו קשר -
Date:24רביעידצמבר 2014הרצאה
Forum on Mathematical Principles in Biology
More information שעה 10:00 - 11:00מיקום בניין ארתור ורושל בלפר למחקר ביורפואימרצה Prof. Ariel Amir
Dept of Applied Mathematics and Applied Physics, Harvard Universityמארגן המחלקה לביולוגיה מולקולרית של התאצרו קשר -
Date:24רביעידצמבר 2014הרצאה
X-ray transients: hypo- or hyper-luminous?
More information שעה 11:15 - 12:00מיקום בניין לפיזיקה על-שם נלה וליאון בנוזיומרצה Jean-Pierre Lasota מארגן מרכז לאסטרופיסיקה עש נלה וליאון בנוזיוצרו קשר תקציר Show full text abstract about The thermal-viscous disc instability model gives a plausible...» The thermal-viscous disc instability model gives a plausible explanation of outbursts of soft X-ray transient systems if self-irradiation of the disc is included. After a short introduction of the model I will show that there is a simple relation between the peak luminosity (at the start of an outburst) and the decay timescale. This relation can be used to place constraints on systems assumed to undergo disc instabilities. The observable X-ray populations of elliptical galaxies must consist of long-lived transients, as deduced on different grounds by Piro & Bildsten (2001). The strongly-varying X-ray source HLX-1 in the galaxy ESO 243-49 can be modelled as a disc instability of a highly super-Eddington stellar-mass binary similar to SS433. A fit to the disc instability picture is not possible for an intermediate-mass black hole model for HLX-1. Other, recently identified, super-Eddington ULXs might be subject to disk instability. -
Date:24רביעידצמבר 2014הרצאה
Scalable algorithms for translating natural language to logical form
More information שעה 11:15 - 11:15מיקום בניין יעקב זיסקינדמרצה Jonathan Berant
Stanford Universityמארגן הפקולטה למתמטיקה ומדעי המחשבצרו קשר -
Date:24רביעידצמבר 2014הרצאה
Genetic and Epigenetic Determinants of Chronic Lymphocytic Leukemia Evolution
More information שעה 14:00 - 14:00מיקום בניין ע"ש מקס ולילאן קנדיוטימרצה Dr.Dan-Avi Landau
Dana Farber Cancer Institute & Broad Institute of Harvard and MIT, U.S.A.מארגן המחלקה לאימונולוגיה ורגנרציה ביולוגיתצרו קשר -
Date:25חמישידצמבר 2014הרצאה
Magnetic Resonance Seminar
More information שעה 09:30 - 09:30כותרת Quantitative analysis of advanced MRI methods for classification and follow up of patients with brain lesionsמיקום אולם הרצאות ע"ש גרהרד שמידטמרצה Dr. Dafna Ben Bashat
Dept. of Radiology, Sackler Faculty of Medicine Functional Brain Center, Tel Aviv Sourasky Medical Centerמארגן המחלקה לפיזיקה כימית וביולוגיתצרו קשר תקציר Show full text abstract about In recent years, technical and methodological advances conce...» In recent years, technical and methodological advances concerning medical applications of magnetic resonance (MR) have allowed the acquisition of multiple types of data, beyond pure anatomy, in a single examination, including diffusion imaging, MR spectroscopy, perfusion, permeability imaging and functional MRI. Integrating the various MR methods along with multiparametric analysis, can improve patient evaluation, quantitative tissue classification and characterization, as well as therapy response assessment.
Accurate measurements of brain structures and lesion volumes can be performed using manual or semi-manual methods. Analysis of multiparametric data, including advanced imaging methods, requires the use of advanced analysis tools. Multiparametric analysis of MRI data includes supervised and un-supervised methods, and provides information that often requires validation.
In this talk, I will present state of the art methods used in MRI data acquisition and analysis for quantitative assessment and follow-up of brain lesions; give a brief description of the main methods used for advanced and multi-parametric image analysis; highlight controversial issues regarding the use and analysis of these methods and their potential use in clinical practice.