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January 26, 2015
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Date:28WednesdayJanuary 2015Lecture
Special Guest Lecture - Prof. Alberto Bardelli
More information Time 12:00 - 13:00Title Clonal evolution and drug resistance: from cancer avatars to liquid biopsiesLocation Arthur and Rochelle Belfer Building for Biomedical Research
Botnar AuditoriumLecturer Prof. Alberto Bardelli
University of Torino, School of Medicine, ItalyOrganizer Department of Molecular Cell BiologyContact -
Date:28WednesdayJanuary 2015Lecture
Plants, Sex and the Hidden Epigenetic Code
More information Time 14:00Location Gerhard M.J. Schmidt Lecture HallLecturer Dr. Cathy Bessudo
Department of Plant and Environmental Sciences, WISOrganizer Department of Molecular Chemistry and Materials Science
Staff Scientists SeminarContact Details Show full text description of Abstract: Plants provide us with oxygen, food, fiber, medic...» Abstract:
Plants provide us with oxygen, food, fiber, medicines, energy and more. Feeding the growing world population under constant climate change with less arable land is a huge challenge that requires new genetic tools. Whatever tool is chosen it is crucial to understand the mechanisms of the process.
One way to obtain new traits is by achieving variation. Variation is created in sexual reproducing eukaryotes by a specialized type of cell division called meiosis. During meiosis, a programmed induction of DNA double-strand breaks (DSBs) leads to the exchange of genetic material between homologous chromosomes. This process, called meiotic recombination, increases genome diversity and is essential for proper chromosome segregation and production of viable gametes. We are trying to understand how meiotic recombination is regulated.
An alternative to obtain better crops is by genetic engineering. Agrobacterium tumefaciens is a bacterium that is widely used as a vector for plant transformation. We are currently developing methods to understand when and how the plants are transform. We are exploring new arising technologies that we led us to introduce new genes in specific genome position.
This work was performed in the laboratory of Avi Levy, Plant and Environmental Sciences Dept.
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Date:28WednesdayJanuary 2015Lecture
Diagnostics of laser induced plasma by optical emission spectroscopy
More information Time 14:30Location Edna and K.B. Weissman Building of Physical Sciences
Drory AuditoriumLecturer Marko Cvejic
Weizmann Institute of ScienceOrganizer Department of Particle Physics and Astrophysics
Plasma SeminarContact Details Show full text description of 14:15 - Coffee, tea and more...» 14:15 - Coffee, tea and moreAbstract Show full text abstract about The procedure for diagnostics of laser induced plasma (LIP) ...» The procedure for diagnostics of laser induced plasma (LIP) by optical emission spectroscopy technique is described. LIP was generated by focusing Nd:YAG laser radiation (1.064 nm, 50 mJ, 15 ns pulse duration) on the surface of pellet containing among other elements lithium. Details of the experimental setup and experimental data processing are presented.
High speed plasma photography was used to study plasma evolution and decay. From those images optimum time for plasma diagnostics is located.
The electron number density, Ne, is determined by fitting profiles of Li I lines while electron temperature, Te, was determined from relative intensities of Li I lines using Boltzmann plot (BP) technique. All spectral line recordings were tested for the presence of self-absorption and then if optically thin, Abel inverted and used for plasma diagnostic purposes.
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Date:29ThursdayJanuary 2015Colloquia
DOUBLE BETA DECAY AND THE NEUTRINO MASS
More information Time 11:00 - 12:30Location Edna and K.B. Weissman Building of Physical Sciences
AuditoriumLecturer Francesco Iachello
Yale UniversityOrganizer Faculty of PhysicsContact Details Show full text description of 11:00 – Raising a toast...» 11:00 – Raising a toastAbstract Show full text abstract about The question of whether or not the neutrino is a Majorana pa...» The question of whether or not the neutrino is a Majorana particle and, if so, what is its average mass remains one of the most fundamental problems in physics today.
The average neutrino mass can be obtained from neutrinoless double beta decay.
The inverse half-life for this process is given by the product of a phase space factor (PSF), a nuclear matrix element (NME) and whatever physics there is beyond the standard model. In this talk, the theory of double beta decay, both with and without the emission of neutrinos, will be rviewed, and recent calculations of the PSF and NME will be presented. From these and from experimental limits on the half-life of neutrinoless double beta decay, one can extract limits on the neutrino mass, both for the exchange of light (m>1MeV) and heavy (m<1GeV) neutrinos. Current limits will be discussed.
This talk is dedicated to Igal Talmi on the occasion of his 90th birthday. The calculation of the NME makes use of methods (microscopic interacting boson model) co-developed by Talmi years ago.
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Date:29ThursdayJanuary 2015Lecture
Geometric Functional Analysis and Probability Seminar
More information Time 11:05 - 01:00Title Random walk in random environment: the operator theory approachLocation Jacob Ziskind Building
Room 261Lecturer Gady Kozma
WISContact Abstract Show full text abstract about Examine random walk in a stationary, ergodic, random environ...» Examine random walk in a stationary, ergodic, random environment which is bistochastic i.e. the sum of probabilities to enter any fixed vertex is 1. Consider the drift as a function on the probability space on the environments, and assume it belongs to domain of definition of where D is the symmetrized generator of the walk (this is the famous H_{-1} condition). We show that under these conditions the walk satisfies a central limit theorem. The proof uses the "relaxed sector condition" which shows an unexpected connection to the spectral theory of unbounded operators.
All terms will be explained in the talk. This is joint work with B??lint T?³th. -
Date:29ThursdayJanuary 2015Lecture
Chromatin Dynamics in Hematopoiesis: Instructions for Blood Formation
More information Time 14:00 - 15:00Title Student SeminarLocation Arthur and Rochelle Belfer Building for Biomedical Research
Botnar AuditoriumLecturer David Lara Astiaso
from Dr. Ido Amit's labOrganizer Department of Systems ImmunologyContact -
Date:29ThursdayJanuary 2015Lecture
Life Science Lecture
More information Time 15:00 - 16:00Title Sex specific genetics and the seeming paradox of hereditable infertilityLocation Dolfi and Lola Ebner AuditoriumLecturer Shmuel Pietrokovski
Dept. of Molecular GeneticsOrganizer Life SciencesContact