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  • Wiley-Blackwell  (17)
  • American Association for the Advancement of Science (AAAS)  (3)
  • Institute of Physics  (2)
  • Nature Publishing Company  (2)
  • 1
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    ECOLOGY: Louisiana's Vanishing Wetlands: Going, Going (2007)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2007-09-11
    Description: An ambitious $14 billion plan known as Coast 2050 attempts to protect more than 10,000 square kilometers of Louisiana's wetlands, which are disappearing at a rate of up to 90 square kilometers per year, one of the highest rates of land loss in the world. But a number of unanswered scientific questions swirl around the plan. And it could run afoul of powerful interests in the shipping, petroleum, and fishing industries.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bourne, J -- New York, N.Y. -- Science. 2000 Sep 15;289(5486):1860-3.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17839927" target="_blank"〉PubMed〈/a〉
    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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  • 2
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    Online education today (2009)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2009-01-03
    Description: Online education is established, growing, and here to stay. It is creating new opportunities for students and also for faculty, regulators of education, and the educational institutions themselves. Much of what is being learned by the practitioners will flow into the large numbers of blended courses that will be developed and delivered on most campuses. Some of what is being learned will certainly improve pedagogical approaches and possibly affect other important problems, such as the lengthening time to completion of a degree. Online education is already providing better access to education for many, and many more will benefit from this increased access in the coming years.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Mayadas, A Frank -- Bourne, John -- Bacsich, Paul -- New York, N.Y. -- Science. 2009 Jan 2;323(5910):85-9. doi: 10.1126/science.1168874.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Alfred P. Sloan Foundation, 630 Fifth Avenue, New York, NY 10111, USA. mayadas@sloan.org〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19119225" target="_blank"〉PubMed〈/a〉
    Keywords: Computer-Assisted Instruction/economics ; *Education, Distance/economics ; Faculty ; Federal Government ; Humans ; *Internet ; Online Systems ; State Government ; Students ; Training Support ; United States ; *Universities
    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
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    Germinal center antibody mutation trajectories are determined by rapid self/foreign discrimination (2018)
    American Association for the Advancement of Science (AAAS)
    In: Science
    Details
    Publication Date: 2018-04-13
    Description: Antibodies have the specificity to differentiate foreign antigens that mimic self antigens, but it remains unclear how such specificity is acquired. In a mouse model, we generated B cells displaying an antibody that cross-reacts with two related protein antigens expressed on self versus foreign cells. B cell anergy was imposed by self antigen but reversed upon challenge with high-density foreign antigen, leading to germinal center recruitment and antibody gene hypermutation. Single-cell analysis detected rapid selection for mutations that decrease self affinity and slower selection for epistatic mutations that specifically increase foreign affinity. Crystal structures revealed that these mutations exploited subtle topological differences to achieve 5000-fold preferential binding to foreign over self epitopes. Resolution of antigenic mimicry drove the optimal affinity maturation trajectory, highlighting the value of retaining self-reactive clones as substrates for protective antibody responses.
    Keywords: Cell Biology, Immunology
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Geosciences , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 4
    Electronic Resource
    Electronic Resource
    Experimental Methods for On–Line Mass Spectrometry in Fermentation Technology * (1983)
    [s.l.] : Nature Publishing Company
    Nature biotechnology 1 (1983), S. 181-188 
    Details
    ISSN: 1546-1696
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: [Auszug] It is shown here how mass spectrometry (MS) can be used for on–line data acquisition in fermentation. MS was applied in this work to analyze gas and liquid phases. Gas phase analysis allows fast and accurate measurement of all gases of interest (O2, N2, CO2, Ar, He etc.). Liquid phase ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/nbt0483-181
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  • 5
    Electronic Resource
    Electronic Resource
    Enzymatic Whey Hydrolysis in the Pilot Plant “Lactohyd” (1984)
    [s.l.] : Nature Publishing Company
    Nature biotechnology 2 (1984), S. 441-444 
    Details
    ISSN: 1546-1696
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: [Auszug] The problem of whey disposal or its meaningful utilization has plagued the dairy industry for many decades. In some countries, like Switzerland and Norway, where the art of cheese making in small plants still prevails, whey is disposed of locally by pig-feeding or by manufacture of whey cheese. ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/nbt0584-441
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  • 6
    Electronic Resource
    Electronic Resource
    Continuous culture using a predispersed insoluble substrate (1977)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 19 (1977), S. 765-767 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260190513
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  • 7
    Electronic Resource
    Electronic Resource
    Activated-sludge process dynamics with continuous total organic carbon and oxygen uptake measurements (1979)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 21 (1979), S. 1561-1577 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The dynamic responses of a bench-scale activated-sludge process to step changes and square-wave inputs in the feed flow and concentration were measured. Instrumentation permitted the continuous measurement of the oxygen uptake rate and dissolved organic carbon responses. Notable were the sensitivity of the oxygen uptake rate to process changes and the reliability of the dynamic oxygen electrode method. The responses were found to be greatly influenced by the organic loading, FS0/XV, which was incorporated into a load-dependent kinetics model. Simulations showd good agreement with experiment in the case of the square-wave disturbances. Because of the changing and complex nature of the activated sludge it was necessary to reestimate the parameter set for each run.
    Additional Material: 15 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260210906
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  • 8
    Electronic Resource
    Electronic Resource
    Formation of oligosaccharides during enzymatic lactose hydrolysis and their importance in a whey hydrolysis process: Part II: Experimental (1987)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 30 (1987), S. 1026-1031 
    Details
    ISSN: 0006-3592
    Keywords: Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Enzymatic lactose hydrolysis using two yeast and two fungal lactases that are of current technical interest was studied. The enzymes were compared regarding their oligosaccharide production. Parameters influencing oligosaccharide formation, together with the effect of immobilization were examined and conditions minimizing oligosaccharide content in the hydrolysis product were proposed. Enzymatic whey hydrolysis was also considered. A possibility of enzymatic lactose recombination from its hydrolysis products was shown.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260300905
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  • 9
    Electronic Resource
    Electronic Resource
    Kinetics of enzymatic degradation of cyanide (1992)
    New York, NY [u.a.] : Wiley-Blackwell
    Biotechnology and Bioengineering 39 (1992), S. 629-634 
    Details
    ISSN: 0006-3592
    Keywords: biocatalyst ; cyanide degradation ; immobilized enzyme ; wastewaters ; kinetics ; Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: CYANIDASE@ is a new enzyme preparation capable of degrading cyanide in industrial wastewaters to ammonia and formate in an apparently one-step reaction, down to very low concentrations. This enzyme has both a high selectivity and affinity toward cyanide. A granular form of the biocatalyst was used in a recirculation fixed bed reactor in order to characterize the new biocatalyst with respect to pH, ionic strength, common ions normally present in wastewaters, mass transfer effects, and temperature. Long term stability was investigated. The kinetics of the enzymatic degradation of cyanide were studied in a batch reactor using the powdered immobilized enzyme preparation and modeled using a simple Michaelis-Menten equation.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bit.260390607
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  • 10
    Electronic Resource
    Electronic Resource
    Letters to the editor (1997)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 43 (1997), S. 1372-1374 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690430529
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