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  • 1
    Publication Date: 2015-05-16
    Description: Author(s): Netanel Hazut, Shlomi Medalion, David A. Kessler, and Eli Barkai In this article we generalize the classical Edgeworth expansion for the probability density function (PDF) of sums of a finite number of symmetric independent identically distributed random variables with a finite variance to PDFs with a diverging variance, which converge to a Lévy α -stable density ... [Phys. Rev. E 91, 052124] Published Thu May 14, 2015
    Keywords: Statistical Physics
    Print ISSN: 1539-3755
    Electronic ISSN: 1550-2376
    Topics: Physics
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  • 2
    Publication Date: 2016-09-01
    Description: Author(s): Andreas Dechant, Shalom Tzvi Shafier, David A. Kessler, and Eli Barkai The Boltzmann-Gibbs density, a central result of equilibrium statistical mechanics, relates the energy of a system in contact with a thermal bath to its equilibrium statistics. This relation is lost for nonthermal systems such as cold atoms in optical lattices, where the heat bath is replaced with t… [Phys. Rev. E 94, 022151] Published Wed Aug 31, 2016
    Keywords: Statistical Physics
    Print ISSN: 1539-3755
    Electronic ISSN: 1550-2376
    Topics: Physics
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  • 3
    Publication Date: 2013-02-23
    Description: Author(s): Moshe Gitterman and David A. Kessler We study the instabilities of a harmonic oscillator subject to additive and dichotomous multiplicative noise, focusing on the dependence of the instability threshold on the mass. For multiplicative noise in the damping, the energy instability threshold is crossed as the mass is decreased, as long as... [Phys. Rev. E 87, 022137] Published Fri Feb 22, 2013
    Keywords: Statistical Physics
    Print ISSN: 1539-3755
    Electronic ISSN: 1550-2376
    Topics: Physics
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  • 4
    Publication Date: 2001-03-17
    Description: Herbivore attack is known to increase the emission of volatiles, which attract predators to herbivore-damaged plants in the laboratory and agricultural systems. We quantified volatile emissions from Nicotiana attenuata plants growing in natural populations during attack by three species of leaf-feeding herbivores and mimicked the release of five commonly emitted volatiles individually. Three compounds (cis-3-hexen-1-ol, linalool, and cis-alpha-bergamotene) increased egg predation rates by a generalist predator; linalool and the complete blend decreased lepidopteran oviposition rates. As a consequence, a plant could reduce the number of herbivores by more than 90% by releasing volatiles. These results confirm that indirect defenses can operate in nature.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kessler, A -- Baldwin, I T -- New York, N.Y. -- Science. 2001 Mar 16;291(5511):2141-4.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Ecology, Max-Planck-Institute for Chemical Ecology, Jena 07745, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11251117" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Beetles/physiology ; Bicyclo Compounds/metabolism/pharmacology ; Female ; Heteroptera/physiology ; Hexanols/metabolism/pharmacology ; Host-Parasite Interactions ; Insects/*physiology ; Manduca/physiology ; *Monoterpenes ; Organic Chemicals/*metabolism/pharmacology ; Oviposition/drug effects ; *Plants, Toxic ; Terpenes/metabolism/pharmacology ; Tobacco/*metabolism/*parasitology ; Volatilization
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 5
    Publication Date: 1992-06-26
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kessler, D A -- Taylor, M R -- Maryanski, J H -- Flamm, E L -- Kahl, L S -- New York, N.Y. -- Science. 1992 Jun 26;256(5065):1747-9, 1832.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Food and Drug Administration (FDA), Rockville, MD 20857.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/1615315" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Biotechnology ; *Consumer Product Safety ; Food/*adverse effects ; Food Hypersensitivity ; Genetic Engineering ; Humans ; Legislation, Drug ; Plants, Genetically Modified ; United States ; United States Food and Drug Administration
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 6
    Publication Date: 2004-01-24
    Description: Neural progenitor cells were encapsulated in vitro within a three-dimensional network of nanofibers formed by self-assembly of peptide amphiphile molecules. The self-assembly is triggered by mixing cell suspensions in media with dilute aqueous solutions of the molecules, and cells survive the growth of the nanofibers around them. These nanofibers were designed to present to cells the neurite-promoting laminin epitope IKVAV at nearly van der Waals density. Relative to laminin or soluble peptide, the artificial nanofiber scaffold induced very rapid differentiation of cells into neurons, while discouraging the development of astrocytes. This rapid selective differentiation is linked to the amplification of bioactive epitope presentation to cells by the nanofibers.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Silva, Gabriel A -- Czeisler, Catherine -- Niece, Krista L -- Beniash, Elia -- Harrington, Daniel A -- Kessler, John A -- Stupp, Samuel I -- NS20013/NS/NINDS NIH HHS/ -- NS20778/NS/NINDS NIH HHS/ -- NS34758/NS/NINDS NIH HHS/ -- New York, N.Y. -- Science. 2004 Feb 27;303(5662):1352-5. Epub 2004 Jan 22.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Institute for Bioengineering and Nanoscience in Advanced Medicine, Northwestern University, Chicago, IL 60611, USA. gsilva@ucsd.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14739465" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Astrocytes/cytology ; *Cell Differentiation ; Cell Movement ; Cell Survival ; Cells, Cultured ; Diffusion ; Epitopes ; Glial Fibrillary Acidic Protein/analysis ; Hydrogen Bonding ; Hydrophobic and Hydrophilic Interactions ; Laminin/administration & dosage/chemistry/immunology/*metabolism ; Mice ; *Nanotechnology ; Neurites/physiology/ultrastructure ; Neurons/*cytology/physiology ; Peptide Fragments/administration & dosage/chemistry/*metabolism ; Rats ; Spinal Cord ; Stem Cells/*cytology/physiology ; Tubulin/analysis
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 7
    Publication Date: 2004-07-03
    Description: We transformed the native tobacco, Nicotiana attenuata, to silence its lipoxygenase, hydroperoxide lyase, and allene oxide synthase genes in order to inhibit oxylipin signaling, known to mediate the plant's direct and indirect defenses. When planted into native habitats, lipoxygenase-deficient plants were more vulnerable to N. attenuata's adapted herbivores but also attracted novel herbivore species, which fed and reproduced successfully. In addition to highlighting the value of genetically silencing plants to study ecological interactions in nature, these results show that lipoxygenase-dependent signaling determines host selection for opportunistic herbivores and that induced defenses influence herbivore community composition.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kessler, Andre -- Halitschke, Rayko -- Baldwin, Ian T -- New York, N.Y. -- Science. 2004 Jul 30;305(5684):665-8. Epub 2004 Jul 1.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Ecology, Max-Planck-Institute for Chemical Ecology, Hans-Knoll-Strasse 8, Jena 07745, Germany.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/15232071" target="_blank"〉PubMed〈/a〉
    Keywords: Acetates/pharmacology ; Aldehyde-Lyases/genetics/*metabolism ; Animals ; Beetles/physiology ; Bicyclo Compounds/metabolism ; Cyclopentanes/*metabolism/pharmacology ; Cytochrome P-450 Enzyme System/genetics/*metabolism ; *Ecosystem ; Female ; Gene Expression Profiling ; Gene Expression Regulation, Plant ; Gene Silencing ; Hemiptera/physiology ; Hexobarbital/metabolism ; Insects/*physiology ; Intramolecular Oxidoreductases/genetics/*metabolism ; Lipoxygenase/genetics/*metabolism ; Manduca/physiology ; Nicotine/metabolism ; Oligonucleotide Array Sequence Analysis ; Oviposition ; Oxylipins ; Signal Transduction ; Terpenes/metabolism ; Tobacco/genetics/metabolism/*physiology ; Transformation, Genetic
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 8
    Publication Date: 2018-08-29
    Description: Author(s): Haim Weissmann, Nadav M. Shnerb, and David A. Kessler The demographic (shot) noise in population dynamics scales with the square root of the population size. This process is very important, as it yields an absorbing state at zero field, but simulating it, especially on spatial domains, is a nontrivial task. Here, we analyze two similar methods that wer... [Phys. Rev. E 98, 022131] Published Tue Aug 28, 2018
    Keywords: Statistical Physics
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  • 9
    Publication Date: 2010-03-27
    Description: Predators determine herbivore and plant biomass via so-called trophic cascades, and the strength of such effects is influenced by ecosystem productivity. To determine whether evolutionary trade-offs among plant traits influence patterns of trophic control, we manipulated predators and soil fertility and measured impacts of a major herbivore (the aphid Aphis nerii) on 16 milkweed species (Asclepias spp.) in a phylogenetic field experiment. Herbivore density was determined by variation in predation and trade-offs between herbivore resistance and plant growth strategy. Neither herbivore density nor predator effects on herbivores predicted the cascading effects of predators on plant biomass. Instead, cascade strength was strongly and positively associated with milkweed response to soil fertility. Accordingly, contemporary patterns of trophic control are driven by evolutionary convergent trade-offs faced by plants.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mooney, Kailen A -- Halitschke, Rayko -- Kessler, Andre -- Agrawal, Anurag A -- New York, N.Y. -- Science. 2010 Mar 26;327(5973):1642-4. doi: 10.1126/science.1184814.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Ecology and Evolutionary Biology, University of California, Irvine, CA 92697-2525 USA. mooneyk@uci.edu〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20339073" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Aphids/*physiology ; Asclepias/growth & development/*physiology ; *Biological Evolution ; Biomass ; Cues ; *Ecosystem ; *Food Chain ; Population Density ; Predatory Behavior ; Sesquiterpenes/metabolism ; Soil ; Species Specificity
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 10
    Publication Date: 2017-10-18
    Description: Author(s): David A. Kessler and Stanislav Burov A continuous approximation framework for general nonlinear stochastic as well as deterministic discrete maps is developed. For the stochastic map with uncorelated Gaussian noise, by successively applying the Itô lemma, we obtain a Langevin type of equation. Specifically, we show how nonlinear maps g... [Phys. Rev. E 96, 042139] Published Tue Oct 17, 2017
    Keywords: Statistical Physics
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    Topics: Physics
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