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Dr. Filipe Andre Natalio
Biolithic signaturesThis research focuses on stone tools and prehistory from a material science point of view. One of the theories behind flint formation postulates that flint was formed at the bottom of the sea - mainly composed remnant calcium carbonate shells of single cell microorganisms (e.g. coccolitophores) and siliceous skeletons (e.g. sponge spicules, diatoms and radiolarian) - by bacteria under anaerobic conditions. The bacteria under such conditions excrete HS- forming an acidic environment that dissolves the calcium carbonate and polymerizes silica into an entrapping gel. This anoxic environment also helps to preserve the organic material. Thus, our current working hypothesis is that bacteria are responsive to their environment in a specific biochemical ways and, thus, different flint formations will preserve different biochemical reactions from the time that flint was formed and thus this organic material is intrinsic and expected to serve as biolithic molecular proxies from which the flint provenience can be inferred as well as paleoclimate reconstruction dating back several millions years ago. We have developed new workflows to extract this organic material from the rocks without contamination with a micro to nanoprecision. The chemical information derived from this organic material is expected to have profound impact on paleoenvironments reconstruction, biogeology, exobiology and origin of life. When applied in the context of scientific archaeological research, i.e., to stone tools, it holds the potential to start infer migration patterns from hominins spanning from a couple of thousand years ago down to 1-2 million years ago (e.g. Homo erectus).Biological fabrication&smart textilesCollaboration with: Dr. Michaela Eder and Prof. Peter Fratzl (Max Planck Institute of Colloids and Interfaces, Golm, Germany)This research focuses on designing the next generation of smart textiles. Instead of using the classical surface functionalization of fibers that provide unusual functions to the fibers (e.g. antibacterial), we have explore the biochemical pathways of cellulose formation that in combination with molecular design (synthesis) have allowed the biological incorporation of these unusual molecules into the cellulose fibers (e.g. fluorescent, supermagnetic, superhydrophobic). We have started by implementing a sustainable cotton culture (hydroponic) and used in vitro cotton cultures as proof-of-concept. In the next steps, we aim to move from the ovule to the fruit and ultimately to the complete plant. We coined this approach as materials farming. This new approach allows a novel and unique sustainable conversion of raw materials into multifunctional and innovative materials and rethinking of our current fabrication strategies.
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Prof. Ron Naaman
Spin selectivity in electrons transmission through chiral moleculesCollaboration with: Yossi Paltiel, Hebrew University David H. Waldeck, University of Pittsburghm USA Claudio Fontanessi, Modena University, Italy E. W. Meijer, Eindhoven, Netherland C. Achim, Carnegie Melon, USAelectron transfer in bio-moleculesspin selective electron transferspin dependent electrochemistryspintronics with chiral moleculesenantio-selective interactionSpin effect in water splitting
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Prof. David Mukamel
Systems with long-range interactionsCollaboration with: S. Ruffo A. CampaCollective phenomena in systems far from thermal equilibrium.Collaboration with: S. Majumdar G. Schehr M. Barma A. KunduCoarsening processes and slow dynamics.Systems with long range interactions
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Prof. Edna Mozes
Systemic lupus erythematosus (SLE): Induction and development in various animal models.The role of various cell types (APC, T, B) and cytokines in the pathogenesis of autoimmune diseases.The status and role of T regulatory cells in autoimmune diseases.Specific immunomodulation of the autoimmune diseases, Systemic lupus erythematous and Sjogren Syndrome by a synthetic, tolerogenic peptide.Collaboration with: Prof. Zev Sthoeger, Kaplan Medical Center.Elucidation of the mechanisms (effects on main pathways, cell types, cytokines and other pathogenic molecules) by which the tolerogenic peptide ameliorates autoimmune disease manifestations in animal models and in patients with SLE and Sjogren Syndrome.Development of the tolerogenic peptide as a novel specific drug for the treatment of SLE and Sjogren Syndrome.
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Prof. David Mirelman
Molecular pathogenesis of the human intestinal parasite <I>Entamoeba histolytica</I>.Collaboration with: Rivka BrachaMolecular biology and genome organization in the lower eukaryot <I>Entamoeba histolytica</I>.Selective inhibition of expression of virulence genes by Antisense RNA.Transcriptional epigenetic gene silencing mechanismsPathogenesis of AmoebiasisDevelopment of vaccine against <I>Entamoeba histolytica</I>.Mode of action and therapeutical potential of Allicin from GarlicCollaboration with: Aharon Rabinkov, Elena AppelUses of derivatives of Allicin against hypertension and obesityAntifungal delivery system which produces in situ toxic allicin moleculesA delivery system for the in-vivo killing of cancer cells by Allicin
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Prof. David Milstein
Organometallic chemistry and catalysisBond activation by electron-rich transition metal complexes.Rational design of homogeneous catalysis and synthetic methodology based on transition metal complexes.Impact of molecular order on catalysis and reactivity.Generation and stabilization of elusive (potentially biologically active) molecules
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