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  • 1
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    Geophysical evidence for melt in the deep lunar interior and implications for lunar evolution (2014)
    Wiley
    Details
    Publication Date: 2014-09-19
    Description: . Analysis of lunar laser ranging and seismic data has yielded evidence that has been interpreted to indicate a molten zone in the lower-most mantle overlying a fluid core. Such a zone provides strong constraints on models of lunar thermal evolution. Here we determine thermo-chemical and physical structure of the deep Moon by inverting lunar geophysical data (mean mass and moment of inertia, tidal Love number, and electromagnetic sounding data) in combination with phase-equilibrium computations. Specifically, we assess whether a molten layer is required by the geophysical data. The main conclusion drawn from this study is that a region with high dissipation located deep within the Moon is required to explain the geophysical data. This region is located within the mantle where the solidus is crossed at a depth of 1200 km (≥1600°C). Inverted compositions for the partially molten layer (150–200 km thick) are enriched in FeO and TiO 2 relative to the surrounding mantle. The melt phase is neutrally buoyant at pressures of ~4.5–4.6 GPa, but contains less TiO 2 (〈15 wt%) than the Ti-rich (~16 wt%) melts that produced a set of high-density primitive lunar magmas (density of 3.4 g/cm 3 ). Melt densities computed here range from 3.25 to 3.45 g/cm 3 bracketing the density of lunar magmas with moderate-to-high TiO 2 contents. Our results are consistent with a model of lunar evolution in which the cumulate pile formed from crystallization of the magma ocean as it overturned, trapping heat-producing elements in the lower mantle.
    Print ISSN: 0148-0227
    Topics: Geosciences , Physics
    Published by Wiley on behalf of American Geophysical Union (AGU).
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  • 2
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    Fetal liver hematopoietic stem cell niches associate with portal vessels (2015)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2015-12-05
    Description: Whereas the cellular basis of the hematopoietic stem cell (HSC) niche in the bone marrow has been characterized, the nature of the fetal liver niche is not yet elucidated. We show that Nestin(+)NG2(+) pericytes associate with portal vessels, forming a niche promoting HSC expansion. Nestin(+)NG2(+) cells and HSCs scale during development with the fractal branching patterns of portal vessels, tributaries of the umbilical vein. After closure of the umbilical inlet at birth, portal vessels undergo a transition from Neuropilin-1(+)Ephrin-B2(+) artery to EphB4(+) vein phenotype, associated with a loss of periportal Nestin(+)NG2(+) cells and emigration of HSCs away from portal vessels. These data support a model in which HSCs are titrated against a periportal vascular niche with a fractal-like organization enabled by placental circulation.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4706788/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4706788/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Khan, Jalal A -- Mendelson, Avital -- Kunisaki, Yuya -- Birbrair, Alexander -- Kou, Yan -- Arnal-Estape, Anna -- Pinho, Sandra -- Ciero, Paul -- Nakahara, Fumio -- Ma'ayan, Avi -- Bergman, Aviv -- Merad, Miriam -- Frenette, Paul S -- CA164468/CA/NCI NIH HHS/ -- DA033788/DA/NIDA NIH HHS/ -- DK056638/DK/NIDDK NIH HHS/ -- F30 943257/PHS HHS/ -- F32 HL123224/HL/NHLBI NIH HHS/ -- HL069438/HL/NHLBI NIH HHS/ -- HL097700/HL/NHLBI NIH HHS/ -- R01 CA173861/CA/NCI NIH HHS/ -- R01 CA190400/CA/NCI NIH HHS/ -- R01 DA033788/DA/NIDA NIH HHS/ -- R01 DK056638/DK/NIDDK NIH HHS/ -- R01 HL069438/HL/NHLBI NIH HHS/ -- R01 HL116340/HL/NHLBI NIH HHS/ -- R01GM098316/GM/NIGMS NIH HHS/ -- T32 063754/PHS HHS/ -- U54 HL127624/HL/NHLBI NIH HHS/ -- U54CA189201/CA/NCI NIH HHS/ -- U54HL127624/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 2016 Jan 8;351(6269):176-80. doi: 10.1126/science.aad0084. Epub 2015 Dec 3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Ruth L. and David S. Gottesman Institute for Stem Cell and Regenerative Medicine Research. Albert Einstein College of Medicine, Bronx, NY, USA. Department of Cell Biology, Albert Einstein College of Medicine, Bronx, NY, USA. Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA. ; Ruth L. and David S. Gottesman Institute for Stem Cell and Regenerative Medicine Research. Albert Einstein College of Medicine, Bronx, NY, USA. Department of Cell Biology, Albert Einstein College of Medicine, Bronx, NY, USA. ; Department of Pharmacology and Systems Therapeutics, Icahn School of Medicine at Mount Sinai, New York, NY, USA. ; Ruth L. and David S. Gottesman Institute for Stem Cell and Regenerative Medicine Research. Albert Einstein College of Medicine, Bronx, NY, USA. ; Department of Systems and Computational Biology, Albert Einstein College of Medicine, Bronx, NY, USA. ; Department of Oncological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA. ; Ruth L. and David S. Gottesman Institute for Stem Cell and Regenerative Medicine Research. Albert Einstein College of Medicine, Bronx, NY, USA. Department of Cell Biology, Albert Einstein College of Medicine, Bronx, NY, USA. Department of Medicine, Albert Einstein College of Medicine, Bronx, NY, USA. paul.frenette@einstein.yu.edu.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/26634440" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Antigens/analysis ; Ephrin-B2/analysis ; Female ; Hematopoietic Stem Cells/*physiology ; Liver/blood supply/*embryology ; Male ; Mice ; Mice, Inbred C57BL ; Mice, Mutant Strains ; Nestin/analysis ; Neuropilin-1/analysis ; Placental Circulation ; Portal System/chemistry/*embryology ; Pregnancy ; Proteoglycans/analysis ; Receptor, EphB4/analysis ; Stem Cell Niche/*physiology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 3
    Electronic Resource
    Electronic Resource
    The natural occurrence of a begomovirus in sunn hemp (Crotalaria juncea) in India (2002)
    Oxford, UK : Blackwell Science Ltd
    Plant pathology 51 (2002), S. 0 
    Details
    ISSN: 1365-3059
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1365-3059.2002.00714.x
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  • 4
    Electronic Resource
    Electronic Resource
    Guar leaf curl disease from India is caused by Tomato leaf curl virus (2003)
    Oxford, UK : Blackwell Science Ltd
    Plant pathology 52 (2003), S. 0 
    Details
    ISSN: 1365-3059
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3059.2003.00905.x
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  • 5
    Electronic Resource
    Electronic Resource
    Effect of sodium substitution on superconductivity in the Y0.3Ba0.7−xNaxCuO3−y system (1996)
    Springer
    Journal of materials science 15 (1996), S. 1733-1735 
    Details
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00636210
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  • 6
    Electronic Resource
    Electronic Resource
    Zero resistance of quenched Bi1.5Pb0.4Sb0.1Sr2Ca2Cu3Ox at 140 K (1992)
    Springer
    Journal of materials science 27 (1992), S. 6321-6323 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract A glass-ceramic of nominal composition Bi1.5Pb0.4Sb0.1Sr2Ca2Cu3Ox was prepared by the melt-quenching method. The subsequent heat treatment of the sample at 860±5°C showedT c(zero) at 94 K. Exposure of the sample for 4 days in air improved itsT c(zero) to 140 K. In another similarly heat-treated sample, a two-step transition in the p-Tcurve at 140 K and at 1 1 1 K, was observed. The superconducting transition appeared to be of a percolative nature.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00576279
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  • 7
    Electronic Resource
    Electronic Resource
    The finite torsion subgroup of an LCA group need not split (1995)
    Springer
    Periodica mathematica Hungarica 31 (1995), S. 43-44 
    Details
    ISSN: 1588-2829
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract A locally compact abelian topological groupG is constructed whose maximal torsion subgroup is finite but not a topological direct summand ofG.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01876352
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  • 8
    Electronic Resource
    Electronic Resource
    Microencapsulation of yeast cells and their use as a biocatalyst in organic solvents (1996)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 49 (1996), S. 535-543 
    Details
    ISSN: 0006-3592
    Keywords: whole cell biotransformation ; biocatalyst ; baker's yeast ; immobilization ; microencapsulation ; organic solvents ; Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Stable, semipermeable polyamide microcapsules were prepared by interfacial polymerization from a mixture of 1,6-hexanediamine and poly(allylamine) crosslinked with di-acid chlorides and were used to encapsulate baker's yeast. The size and distribution of cells within the capsules were investigated by a combination of laser confocal, electron scanning, and transmission electron microscopy. The encapsulated cells were studied as a biocatalyst for the model reduction of 1-phenyl-1,2-propanedione to 2-hydroxy-1-phenyl-1-propanone in a number of organic solvents. The polymerization conditions were extensively investigated and were found to greatly influence the product yield. Microencapsulated yeast cells, prepared under optimized conditions, carried out the reduction more efficiently than free cells as well as those immobilized in alginate and κ-carrageenan beads. The developed methodology should be broadly applicable to other biotransformations of interest. © 1996 John Wiley & Sons, Inc.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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  • 9
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    Analysis of metabolic pathways by the growth of cells in the presence of organic solvents. (1996)
    National Academy of Sciences
    Details
    Publication Date: 1996-04-16
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
    Published by National Academy of Sciences
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  • 10
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    Potential for Southern Hemisphere climate surprises (2015)
    Wiley
    Details
    Publication Date: 2015-07-17
    Description: ABSTRACT Climate model results suggest that future climate change in Antarctica will be accompanied by continued strengthening and poleward contraction of the Southern Ocean westerly wind belt. Paleoclimate records suggest past changes in the westerly winds can be abrupt and that healing of the Antarctic ozone hole could lead to poleward contraction of the westerlies and increased meridional atmospheric transport of warm air regionally into Antarctica. An abrupt shift to more meridional circulation could lead to notable changes in moisture availability for extra-Antarctic regions, increased Antarctic ice sheet disintegration and more rapid sea-level rise.
    Print ISSN: 0267-8179
    Electronic ISSN: 1099-1417
    Topics: Geography , Geosciences
    Published by Wiley
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