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  • 1
    ISSN: 0022-3832
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Ultraviolet irradiation of polyethylen, nylon, Mylar, and Acrilan produces higher scission-to-crosslinking ratios when irradiation is performed in a nitrogen atmosphere than it does when irradiation is in a vacuum. Irradiation of polyethylene in nitrogen causes a sharp decrease in molecular weight while irradiation of Acrilan in vacuum causes an equally notable increase in molecular weight.
    Additional Material: 4 Ill.
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  • 2
    ISSN: 0022-3832
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Volatile decomposition products of ultraviolet-irradiated polyethylene, nylon, Mylar, and Acrilan have been analyzed. The principal decomposition products of polyethylene are hydrogen and methane. Besides hydrogen and methane, carbon monoxide occurs in considerable amounts in the decomposition products of the other polymers. There is a considerable difference in the relative abundances of methane and hydrogen in the decomposition products, depending on whether irradiation was performed in a vacuum or in nitrogen. Decomposition products of ultraviolet-irradiated nylon include all of the primary amines from methyl through hexyl. Mechanisms consistent with the observed results of photolysis are proposed.
    Additional Material: 8 Ill.
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  • 3
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    Fire and Materials 7 (1983), S. 123-127 
    ISSN: 0308-0501
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Architecture, Civil Engineering, Surveying , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The apparatus described in DIN 4842 was used to measure the heat transmission of a series of Nomex, polyester-cotton, Proban®-Treated cotton, untreated cotton and wool workwear fabrics subjected to a radiant heat source. Heat transmission was found to be dependent on the incident heat flux, fabric weight and fabric thickness. At the heat flux levels tested, 10 KJ m-2s-1 and 20 KJ m-2s-1, heat transmission was found to be largely independent of the fibre composition of the fabric when single layers of fabric were tested. The level of heat transmission was reduced by the use of multiplayer assemblies or a reflective aluminium coating, but the greatest reduction was obtained when air spaces were interposed between the fabrics. Conbinaitons of fabrics were developed which transmitted less than 205 KJ m-2s-1 during testing at incident heat flux levels of 10 KJ m-2s-1 and 20 KJ m-2s-1.
    Additional Material: 4 Ill.
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  • 4
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    Fire and Materials 13 (1988), S. 223-229 
    ISSN: 0308-0501
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Architecture, Civil Engineering, Surveying , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Difficulties encountered in bulk transportation of red phosphorus can be overcome by making an intimate blend with alumina trihydrate. The blend is suitable for direct use with more alumina hydrate in a synertistic flame retardant system for epoxy resin mouldings. The degree of observed synergism allows low loadings of the addivities and consequently the electrical and physical properties of the mouldings are only slightly affected.
    Additional Material: 7 Tab.
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  • 5
    Electronic Resource
    Electronic Resource
    New York : Wiley-Blackwell
    Journal of Polymer Science: Polymer Physics Edition 14 (1976), S. 1111-1119 
    ISSN: 0098-1273
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: We report flow birefringence observations of polyethylene oxide solutions in a four roll mill where the flow field in the central region of the mill approximates well to that of pure shearing flow. When flow birefringence is observed it is seen to be highly localized within a region close to the “outgoing” asymptotic plane of flow. The phenomenon can be explained in terms of the flow birefringence corresponding to high extension of some polymer chains where the localization is caused by the chains requiring sufficient time in the flow field to become extended. This explanation has important consequences in all “persistently extensional flows” and can explain the origin of previously published results of localized flow birefringence observed for polyethylene solutions in axial compression and axial extensional flows.
    Additional Material: 8 Ill.
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  • 6
    ISSN: 0022-3832
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Polyethylene, Teflon, nylon, Mylar, and Acrilan have been irradiated in vacuo and in an atmosphere of nitrogen with narrow bands of ultraviolet radiation centered at 244, 314, and 369 μ and with monochromatic ultraviolet light of wavelength 253.7 μ. The physical properties of all these polymers are ultimately degraded by ultraviolet light of any of these wavelengths, but the shorter wavelengths are much the more effective in producing changes. The degradation of polyethylene, nylon, Mylar, and Acrilan is faster when irradiation is in an inert atmosphere of nitrogen than it is when irradiation is in vacuo. Teflon, however, degrades more rapidly in vacuo than in a nitrogen atmosphere.
    Additional Material: 11 Ill.
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  • 7
    ISSN: 0449-2951
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: Polyethylene, nylon, Mylar, Teflon, and Dacron all deteriorated more rapidly during ultraviolet irradiation when irradiated in oxygen than when irradiated in nitrogen. Deterioration during vacuum irradiation is less rapid than it is during oxygen or nitrogen irradiations for all of these polymers except Teflon, in which case it is more rapid. Environmental effects were not evident during the irradiation of HT-1. A scission-to-crosslinking ratio of 0.93 has been determined for ultraviolet-irradiated polyethylene.
    Additional Material: 9 Ill.
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  • 8
    Publication Date: 2002-06-01
    Description: The high degree of similarity between the mouse and human genomes is demonstrated through analysis of the sequence of mouse chromosome 16 (Mmu 16), which was obtained as part of a whole-genome shotgun assembly of the mouse genome. The mouse genome is about 10% smaller than the human genome, owing to a lower repetitive DNA content. Comparison of the structure and protein-coding potential of Mmu 16 with that of the homologous segments of the human genome identifies regions of conserved synteny with human chromosomes (Hsa) 3, 8, 12, 16, 21, and 22. Gene content and order are highly conserved between Mmu 16 and the syntenic blocks of the human genome. Of the 731 predicted genes on Mmu 16, 509 align with orthologs on the corresponding portions of the human genome, 44 are likely paralogous to these genes, and 164 genes have homologs elsewhere in the human genome; there are 14 genes for which we could find no human counterpart.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mural, Richard J -- Adams, Mark D -- Myers, Eugene W -- Smith, Hamilton O -- Miklos, George L Gabor -- Wides, Ron -- Halpern, Aaron -- Li, Peter W -- Sutton, Granger G -- Nadeau, Joe -- Salzberg, Steven L -- Holt, Robert A -- Kodira, Chinnappa D -- Lu, Fu -- Chen, Lin -- Deng, Zuoming -- Evangelista, Carlos C -- Gan, Weiniu -- Heiman, Thomas J -- Li, Jiayin -- Li, Zhenya -- Merkulov, Gennady V -- Milshina, Natalia V -- Naik, Ashwinikumar K -- Qi, Rong -- Shue, Bixiong Chris -- Wang, Aihui -- Wang, Jian -- Wang, Xin -- Yan, Xianghe -- Ye, Jane -- Yooseph, Shibu -- Zhao, Qi -- Zheng, Liansheng -- Zhu, Shiaoping C -- Biddick, Kendra -- Bolanos, Randall -- Delcher, Arthur L -- Dew, Ian M -- Fasulo, Daniel -- Flanigan, Michael J -- Huson, Daniel H -- Kravitz, Saul A -- Miller, Jason R -- Mobarry, Clark M -- Reinert, Knut -- Remington, Karin A -- Zhang, Qing -- Zheng, Xiangqun H -- Nusskern, Deborah R -- Lai, Zhongwu -- Lei, Yiding -- Zhong, Wenyan -- Yao, Alison -- Guan, Ping -- Ji, Rui-Ru -- Gu, Zhiping -- Wang, Zhen-Yuan -- Zhong, Fei -- Xiao, Chunlin -- Chiang, Chia-Chien -- Yandell, Mark -- Wortman, Jennifer R -- Amanatides, Peter G -- Hladun, Suzanne L -- Pratts, Eric C -- Johnson, Jeffery E -- Dodson, Kristina L -- Woodford, Kerry J -- Evans, Cheryl A -- Gropman, Barry -- Rusch, Douglas B -- Venter, Eli -- Wang, Mei -- Smith, Thomas J -- Houck, Jarrett T -- Tompkins, Donald E -- Haynes, Charles -- Jacob, Debbie -- Chin, Soo H -- Allen, David R -- Dahlke, Carl E -- Sanders, Robert -- Li, Kelvin -- Liu, Xiangjun -- Levitsky, Alexander A -- Majoros, William H -- Chen, Quan -- Xia, Ashley C -- Lopez, John R -- Donnelly, Michael T -- Newman, Matthew H -- Glodek, Anna -- Kraft, Cheryl L -- Nodell, Marc -- Ali, Feroze -- An, Hui-Jin -- Baldwin-Pitts, Danita -- Beeson, Karen Y -- Cai, Shuang -- Carnes, Mark -- Carver, Amy -- Caulk, Parris M -- Center, Angela -- Chen, Yen-Hui -- Cheng, Ming-Lai -- Coyne, My D -- Crowder, Michelle -- Danaher, Steven -- Davenport, Lionel B -- Desilets, Raymond -- Dietz, Susanne M -- Doup, Lisa -- Dullaghan, Patrick -- Ferriera, Steven -- Fosler, Carl R -- Gire, Harold C -- Gluecksmann, Andres -- Gocayne, Jeannine D -- Gray, Jonathan -- Hart, Brit -- Haynes, Jason -- Hoover, Jeffery -- Howland, Tim -- Ibegwam, Chinyere -- Jalali, Mena -- Johns, David -- Kline, Leslie -- Ma, Daniel S -- MacCawley, Steven -- Magoon, Anand -- Mann, Felecia -- May, David -- McIntosh, Tina C -- Mehta, Somil -- Moy, Linda -- Moy, Mee C -- Murphy, Brian J -- Murphy, Sean D -- Nelson, Keith A -- Nuri, Zubeda -- Parker, Kimberly A -- Prudhomme, Alexandre C -- Puri, Vinita N -- Qureshi, Hina -- Raley, John C -- Reardon, Matthew S -- Regier, Megan A -- Rogers, Yu-Hui C -- Romblad, Deanna L -- Schutz, Jakob -- Scott, John L -- Scott, Richard -- Sitter, Cynthia D -- Smallwood, Michella -- Sprague, Arlan C -- Stewart, Erin -- Strong, Renee V -- Suh, Ellen -- Sylvester, Karena -- Thomas, Reginald -- Tint, Ni Ni -- Tsonis, Christopher -- Wang, Gary -- Wang, George -- Williams, Monica S -- Williams, Sherita M -- Windsor, Sandra M -- Wolfe, Keriellen -- Wu, Mitchell M -- Zaveri, Jayshree -- Chaturvedi, Kabir -- Gabrielian, Andrei E -- Ke, Zhaoxi -- Sun, Jingtao -- Subramanian, Gangadharan -- Venter, J Craig -- Pfannkoch, Cynthia M -- Barnstead, Mary -- Stephenson, Lisa D -- New York, N.Y. -- Science. 2002 May 31;296(5573):1661-71.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Celera Genomics, 45 West Gude Drive, Rockville, MD 20850, USA. richard.mural@celera.com〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12040188" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Base Composition ; Chromosomes/*genetics ; Chromosomes, Human/genetics ; Computational Biology ; Conserved Sequence ; Databases, Nucleic Acid ; Evolution, Molecular ; Genes ; Genetic Markers ; *Genome ; *Genome, Human ; Genomics ; Humans ; Mice ; Mice, Inbred A/genetics ; Mice, Inbred DBA/genetics ; Mice, Inbred Strains/*genetics ; Molecular Sequence Data ; Physical Chromosome Mapping ; Proteins/chemistry/genetics ; Sequence Alignment ; *Sequence Analysis, DNA ; Species Specificity ; *Synteny
    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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  • 9
    Publication Date: 2009-02-03
    Description: It has been proposed that during embryonic development haematopoietic cells arise from a mesodermal progenitor with both endothelial and haematopoietic potential called the haemangioblast. A conflicting theory instead associates the first haematopoietic cells with a phenotypically differentiated endothelial cell that has haematopoietic potential (that is, a haemogenic endothelium). Support for the haemangioblast concept was initially provided by the identification during mouse embryonic stem cell differentiation of a clonal precursor, the blast colony-forming cell (BL-CFC), which gives rise to blast colonies with both endothelial and haematopoietic components. Although recent studies have now provided evidence for the presence of this bipotential precursor in vivo, the precise mechanism for generation of haematopoietic cells from the haemangioblast still remains completely unknown. Here we demonstrate that the haemangioblast generates haematopoietic cells through the formation of a haemogenic endothelium intermediate, providing the first direct link between these two precursor populations. The cell population containing the haemogenic endothelium is transiently generated during BL-CFC development. This cell population is also present in gastrulating mouse embryos and generates haematopoietic cells on further culture. At the molecular level, we demonstrate that the transcription factor Tal1 (also known as Scl; ref. 10) is indispensable for the establishment of this haemogenic endothelium population whereas the core binding factor Runx1 (also known as AML1; ref. 11) is critical for generation of definitive haematopoietic cells from haemogenic endothelium. Together our results merge the two a priori conflicting theories on the origin of haematopoietic development into a single linear developmental process.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2661201/" 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/PMC2661201/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lancrin, Christophe -- Sroczynska, Patrycja -- Stephenson, Catherine -- Allen, Terry -- Kouskoff, Valerie -- Lacaud, Georges -- A5297/Cancer Research UK/United Kingdom -- Cancer Research UK/United Kingdom -- England -- Nature. 2009 Feb 12;457(7231):892-5. doi: 10.1038/nature07679. Epub 2009 Jan 28.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cancer Research UK Stem Cell Biology Group.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19182774" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Cell Line ; Core Binding Factor Alpha 2 Subunit/metabolism ; Embryo, Mammalian/cytology/embryology ; Gene Expression Regulation, Developmental ; Hemangioblasts/*cytology ; Hematopoietic Stem Cells/*cytology ; Mice ; Mice, Inbred ICR ; Oncogene Proteins, Fusion/metabolism
    Print ISSN: 0028-0836
    Electronic ISSN: 1476-4687
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
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  • 10
    Publication Date: 2008-10-11
    Description: Knowledge of mammalian diversity is still surprisingly disparate, both regionally and taxonomically. Here, we present a comprehensive assessment of the conservation status and distribution of the world's mammals. Data, compiled by 1700+ experts, cover all 5487 species, including marine mammals. Global macroecological patterns are very different for land and marine species but suggest common mechanisms driving diversity and endemism across systems. Compared with land species, threat levels are higher among marine mammals, driven by different processes (accidental mortality and pollution, rather than habitat loss), and are spatially distinct (peaking in northern oceans, rather than in Southeast Asia). Marine mammals are also disproportionately poorly known. These data are made freely available to support further scientific developments and conservation action.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schipper, Jan -- Chanson, Janice S -- Chiozza, Federica -- Cox, Neil A -- Hoffmann, Michael -- Katariya, Vineet -- Lamoreux, John -- Rodrigues, Ana S L -- Stuart, Simon N -- Temple, Helen J -- Baillie, Jonathan -- Boitani, Luigi -- Lacher, Thomas E Jr -- Mittermeier, Russell A -- Smith, Andrew T -- Absolon, Daniel -- Aguiar, John M -- Amori, Giovanni -- Bakkour, Noura -- Baldi, Ricardo -- Berridge, Richard J -- Bielby, Jon -- Black, Patricia Ann -- Blanc, J Julian -- Brooks, Thomas M -- Burton, James A -- Butynski, Thomas M -- Catullo, Gianluca -- Chapman, Roselle -- Cokeliss, Zoe -- Collen, Ben -- Conroy, Jim -- Cooke, Justin G -- da Fonseca, Gustavo A B -- Derocher, Andrew E -- Dublin, Holly T -- Duckworth, J W -- Emmons, Louise -- Emslie, Richard H -- Festa-Bianchet, Marco -- Foster, Matt -- Foster, Sabrina -- Garshelis, David L -- Gates, Cormack -- Gimenez-Dixon, Mariano -- Gonzalez, Susana -- Gonzalez-Maya, Jose Fernando -- Good, Tatjana C -- Hammerson, Geoffrey -- Hammond, Philip S -- Happold, David -- Happold, Meredith -- Hare, John -- Harris, Richard B -- Hawkins, Clare E -- Haywood, Mandy -- Heaney, Lawrence R -- Hedges, Simon -- Helgen, Kristofer M -- Hilton-Taylor, Craig -- Hussain, Syed Ainul -- Ishii, Nobuo -- Jefferson, Thomas A -- Jenkins, Richard K B -- Johnston, Charlotte H -- Keith, Mark -- Kingdon, Jonathan -- Knox, David H -- Kovacs, Kit M -- Langhammer, Penny -- Leus, Kristin -- Lewison, Rebecca -- Lichtenstein, Gabriela -- Lowry, Lloyd F -- Macavoy, Zoe -- Mace, Georgina M -- Mallon, David P -- Masi, Monica -- McKnight, Meghan W -- Medellin, Rodrigo A -- Medici, Patricia -- Mills, Gus -- Moehlman, Patricia D -- Molur, Sanjay -- Mora, Arturo -- Nowell, Kristin -- Oates, John F -- Olech, Wanda -- Oliver, William R L -- Oprea, Monik -- Patterson, Bruce D -- Perrin, William F -- Polidoro, Beth A -- Pollock, Caroline -- Powel, Abigail -- Protas, Yelizaveta -- Racey, Paul -- Ragle, Jim -- Ramani, Pavithra -- Rathbun, Galen -- Reeves, Randall R -- Reilly, Stephen B -- Reynolds, John E 3rd -- Rondinini, Carlo -- Rosell-Ambal, Ruth Grace -- Rulli, Monica -- Rylands, Anthony B -- Savini, Simona -- Schank, Cody J -- Sechrest, Wes -- Self-Sullivan, Caryn -- Shoemaker, Alan -- Sillero-Zubiri, Claudio -- De Silva, Naamal -- Smith, David E -- Srinivasulu, Chelmala -- Stephenson, Peter J -- van Strien, Nico -- Talukdar, Bibhab Kumar -- Taylor, Barbara L -- Timmins, Rob -- Tirira, Diego G -- Tognelli, Marcelo F -- Tsytsulina, Katerina -- Veiga, Liza M -- Vie, Jean-Christophe -- Williamson, Elizabeth A -- Wyatt, Sarah A -- Xie, Yan -- Young, Bruce E -- New York, N.Y. -- Science. 2008 Oct 10;322(5899):225-30. doi: 10.1126/science.1165115.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉International Union for Conservation of Nature (IUCN) Species Programme, IUCN, 28 Rue Mauverney, 1196 Gland, Switzerland. jan.schipper@iucn.org〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18845749" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Biodiversity ; Body Size ; Conservation of Natural Resources ; Databases, Factual ; Ecosystem ; *Extinction, Biological ; *Mammals/anatomy & histology/classification/physiology ; Marine Biology ; Phylogeny ; Population Dynamics ; Seawater
    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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