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  • Wiley-Blackwell  (10)
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  • 1
    Electronic Resource
    Electronic Resource
    Controlling mechanism in the aqueous absorption of nitrogen oxides (1955)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 1 (1955), S. 105-111 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The reactions involved in the removal of nitrogen oxides from gases by reaction with water are reversible and proceed at a finite rate. It is possible therefore that the over-all process is controlled by the rate of the chemical reactions. On this basis an analysis of the process has been developed by the application of chemical kinetics, with consideration of reactions involving both nitrogen dioxide and dinitrogen tetroxide. The resulting differential equation has been simplified and integrated to give a final equation which can be tested experimentally.Theoretical methods are presented for predicting the extent of absorption of nitrogen oxides at various gas rates and concentrations and are compared with the experimental results.The paper presents some new concepts of the factors which control the rate of absorption of nitrogen dioxide and dinitrogen tetroxide in water. An understanding of the controlling factors in the process should indicate methods for improving the design of absorption towers in nitric acid plants and aid in the design of scrubbers for removing nitrogen oxides from waste gases.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690010116
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  • 2
    Electronic Resource
    Electronic Resource
    Simulation of particulate removal in gas-solid fluidized beds (1982)
    Hoboken, NJ : Wiley-Blackwell
    AIChE Journal 28 (1982), S. 39-49 
    Details
    ISSN: 0001-1541
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: A mathematical model for simulating particulate removal in gas-solid fluidized beds is developed based on bubble assemblage concepts and particulate collection mechanisms. The importance of fluidization mechanics on the overall fluidized bed filtration performance is emphasized in the present study. Model predictions of fluidized bed filtration efficiencies are shown to compare favorably to the experimental results of various investigations. Because of the general formulation of the proposed model, it is believed to be applicable in the design of fluidized bed filtration operations.
    Additional Material: 13 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aic.690280107
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  • 3
    Electronic Resource
    Electronic Resource
    Artificial activation of porcine oocytes matured in vitro (1991)
    New York, NY [u.a.] : Wiley-Blackwell
    Molecular Reproduction and Development 28 (1991), S. 405-409 
    Details
    ISSN: 1040-452X
    Keywords: Nuclear transfer ; Pronuclear formation ; Glucosamine ; Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: These studies were undertaken to understand the biological basis of artificially induced activation of meiotic metaphase II oocytes and to develop a source of oocytes as recipients for cloning by nuclear transfer. In vitro matured porcine oocytes were pulsed with various voltages of electricity and evalulated for pronuclear formation. The percentage of eggs that activated was significantly greater for the higher voltages. The effect on activation of the temperature of the ovaries returning from the abattoir was evaluated and it was found that oocytes derived from ovaries returning at 29°C activated at lower rates (45.5%) than those returning at 36°C (78.9%). An experiment was designed to evaluate the pH of electroporation medium (EM) and the duration of exposure to EM on activation. Oocytes were placed in EM at various pHs for 5 minutes, pulsed, and immediately removed to TL-Hepes or allowed an additional 2 minutes in EM prior to rinsing in TL-Hepes. The results indicate an optimum activation rate at a pH of 7.0 and allowing the additional 2 minutes in EM. Additional glucosamine (5 mM) had no affect on development of the oocyte to metaphase but reduced the percent pronuclear formation from 61% and 47%. A final experiment evaluated the developmental competence of oocytes subjected to a optimum combination of the above treatments and illustrated that a significant portion of the activated oocytes can show limited signs of cleavage. Thus in vitro matured pig oocytes can be induced to activate at high rates.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mrd.1080280413
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  • 4
    Electronic Resource
    Electronic Resource
    Alanine and leucine transport in unfertilized pig oocytes and early blastocysts (1993)
    New York, NY [u.a.] : Wiley-Blackwell
    Molecular Reproduction and Development 34 (1993), S. 250-254 
    Details
    ISSN: 1040-452X
    Keywords: Zwitterionic amino acids ; Oocytes ; Blastocysts ; Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: Amino acid transport is facilitated by specific transporters within the plasma membrane of the cell. In mouse oocytes and cleavage-stage conceptus Na+-dependent L-alanine and L-leucine transport are nearly undetectable. Sodium-dependent transport via system BO,+ in the mouse conceptus increases greatly between the 8-cell and blastocyst stages. By contrast, data presented here for the pig show that L-alanine and L-leucine transport is mainly Na+-dependent in the oocyte; this Na+-dependent component of transport becomes undetectable by the blastocyst stage. The Na+-dependent component of transport in oocytes is inhibited by BCH (2-aminoendo-bicyclo[2.2.1] hexane-2-carboxylic acid) and L-lysine and thus could be a form of system BO,+. In both oocytes and blastocysts Na+-independent L-leucine transport is inhibited by BCH, which is consistent with the presence of system L. The dramatic decrease in Na+-dependent amino acid transport activity could occur in pig conceptuses in association with the onset of RNA synthesis during the 4-cell stage. Regardless of the precise time during development at which it occurs, however, this dramatic, developmentally regulated decrease in Na+-dependent alanine and leucine transport activity contrasts sharply with the large increase in Na+-dependent system BO,+ activity that occurs during preimplantation development of murine conceptuses. Elucidation of the molecular mechanisms by which these changes occur should contribute to an understanding of regulation of gene expression during early development. © 1993 Wiley-Liss, Inc.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mrd.1080340304
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  • 5
    Electronic Resource
    Electronic Resource
    Aspartate and glutamate transport in unfertilized pig oocytes and blastocysts (1993)
    New York, NY [u.a.] : Wiley-Blackwell
    Molecular Reproduction and Development 36 (1993), S. 49-52 
    Details
    ISSN: 1040-452X
    Keywords: Amino acid transport ; L-aspartate ; Gene expression ; Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: Amino acid transport is facilitated by specific transporters within the plasma membrane of the cell. Mediated Na+-independent transport of L-glutamate can be easily detected in mouse oocytes, but it is nearly undetectable in blastocyst-stage embryos. In contrast, the Na+-dependent transport of L-aspartate is not detectable in oocytes, but it is detectable in eight-cell embryos and reaches relatively high levels by the blastocyst stage. It is believed that the amino acid transporters responsible are systems x-c and X-AG, respectively. Here we report the detection of Na+-dependent L-aspartate transport, which increased as pig blastocysts developed, although Na+-dependent aspartate transport was not detected in pig oocytes. Mediated Na+-independent L-glutamate transport was not detected in pig oocytes, in contrast to the mouse, nor in early or hatched pig blastocysts. Thus, while the developmental regulation of system X-AG is similar in both the pig and the mouse, system x-c was not detectable in pig oocytes or blastocysts. Elucidation of the molecular mechanisms controlling amino acid transport and other gene expression in early embryos should contribute to an understanding of whether and even why some aspects of developmental regulation of gene expression may need to differ among species. © 1993 Wiley-Liss, Inc.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mrd.1080360108
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  • 6
    Electronic Resource
    Electronic Resource
    Ursachen, Bedeutung und Kontrolle der Stickstoff/Sauerstoff-Verbindungen in der LuftverunreinigungPlenarvortrag auf dem Jahrestreffen der Verfahrens-Ingenieure, 1. bis 3. Oktober 1968 in Stuttgart. (1969)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 41 (1969), S. 593-599 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Die Bedeutung der verschiedenen Arten der Stickoxide und ihr Beitrag zur Luftverunreinigung wird analysiert. Als Stickoxid-Quellen sind in dieser Hinsicht Kraftfahrzeuge von besonderer Bedeutung. Bei der Analyse der Methoden zur Verringerung des Stickoxid-Gehaltes von Abgasen wird der Entstehung von Stickstoff-Verbindungen in Verbrennungsmotoren und ihrer Verringerung durch direkte katalytische Reduktion besondere Aufmerksamkeit geschenkt. Zukünftig notwendige Forschungs- und Entwicklungsvorhaben werden behandelt, wobei neue, die Luft nicht verschmutzende Transportmittel für den Massenverkehr in die Betrachtungen mit einbezogen werden.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330411002
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  • 7
    Electronic Resource
    Electronic Resource
    Kristall- und Molekülstruktur von SbI3 · 9S3 (9S3 = 1,4,7-Trithiacyclononan) (1993)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 619 (1993), S. 727-730 
    Details
    ISSN: 0044-2313
    Keywords: Antimonytriiodide complex with trithiacyclononane ; synthesis ; crystal structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Crystal and Molecular Structure of SbI3 · 9S3 (9S3 = 1.4.7-Trithiacyclononane).SbI3 forms a 1:1 adduct with 1.4.7-trithiacyclononane. The crystal structure exhibits discrete complexes with a distorted octahedral coordination of antimony(III). In comparison with molecular SbI3 the Sb—I distances are elongated from 271.9 to 290.4 pm (mean). The mean value of the Sb—S distances is 287.5 pm. The planes through iodine and sulfur atoms, respectively, are nearly coplanar. There is no significant stereochemical influence of the Sb(III) lone pair.
    Notes: SbI3 bildet ein 1:1-Addukt mit 1,4,7-Trithiacyclononan. Die Kristallstruktur enthält diskrete Komplexe mit verzerrt oktaedrischer Koordination von Antimon(III). Im Vergleich zum molekularen SbI3 ist der Sb—I-Abstand von 271,9 auf 290,4 pm aufgeweitet. Der mittlere Sb—S-Abstand beträgt 287,5 pm. Die Ebenen durch die drei Iod- und drei Schwefelatome sind nahezu koplanar. Ein signifikanter stereochemischer Einfluß des nichtbindenden Elektronenpaares von Sb(III) ist nicht zu erkennen.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19936190415
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  • 8
    Electronic Resource
    Electronic Resource
    Neutrale Thiolate und ein Iodidthiolat von Antimon(III). Die Kristallstrukturen von Sb(SC6H5)3, Sb(SC6H2Me3-2,4,6)3 und SbI(SC6H2Me3-2,4,6)2 (1996)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 622 (1996), S. 2119-2123 
    Details
    ISSN: 0044-2313
    Keywords: Antimony(III)-thiolates ; Antimony(III)-iodothiolate ; Crystal Structures ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Neutral Thiolates and a Iodothiolate of Antimony(III). Crystal Structures of Sb(SC6H5)3, Sb(SC6H2Me3-2,4,6)3, and SbI(SC6H2Me3-2,4,6)2The crystal structures of Sb(SC6H5)3 (1), Sb(SC6 · H2Me3-2,4,6)3 (2), and the novel compound SbI(SC6H2Me3-2,4,6)2 (3) have been determined by X-ray crystallography. In addition to the expected trigonal pyramidal coordination of antimony intermolecular interactions are observed for 1 (Sb … O: 363.3 pm) and 3 (Sb … S: 2 × 369.4 pm) but not for 2. The reasons for these differences are discussed.
    Notes: Die Kristallstrukturen von Sb(SC6H5)3 (1), Sb(SC6H2Me3-2,4,6)3 (2) sowie der neuen Verbindung SbI(SC6H2Me3-2,4,6)2 (3) wurden mit Hilfe von Röntgenbeugungsmethoden bestimmt. Zusätzlich zu der erwarteten trigonal pyramidalen Umgebung von Antimon werden für 1 und 3, nicht jedoch für 2, intermolekulare Wechselwirkungen beobachtet (1: Sb … C: 363,3 pm; 3: Sb … S: 2 × 369,4 pm). Die Ursachen für diese Unterschiede werden diskutiert.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19966221221
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  • 9
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    Biosphere model simulations of interannual variability in terrestrial 13C/12C exchange (2013)
    Wiley-Blackwell
    Details
    Publication Date: 2013-05-22
    Description: [1]  Previous studies suggest that a large part of the variability in the atmospheric ratio of 13 CO 2 / 12 Co 2 originates from carbon exchange with the terrestrial biosphere rather than with the oceans. Since this variability is used to quantitatively partition the total carbon sink, we here investigate the contribution of interannual variability (IAV) in biospheric exchange to the observed atmospheric 13 C variations. We use the SiBCASA biogeochemical model, including a detailed isotopic fractionation scheme, separate 12 C and 13 C biogeochemical pools, and satellite-observed fire disturbances. This model of 12 CO 2 and 13 CO 2 thus also produces return fluxes of 13 CO 2 from its differently aged pools, contributing to the so-called disequilibrium flux. Our simulated terrestrial 13 C budget closely resembles previously published model results for plant discrimination and disequilibrium fluxes, and similarly suggests that variations in C 3 discrimination and year-to-year variations in C 3 and C 4 productivity are the main drivers of their IAV. But the year-to-year variability in the isotopic disequilibrium flux is much lower (1 σ  = ± 1.5 PgC ‰ yr –1 ) than required (± 12.5 PgC ‰ yr –1 ) to match atmospheric observations, under the common assumption of low variability in net ocean CO 2 fluxes. This contrasts with earlier published results. It is currently unclear how to increase IAV in these drivers suggesting that SIBCASA still misses processes that enhance variability in plant discrimination and relative C 3 /C 4 productivity. Alternatively, 13 C budget terms other than terrestrial disequilibrium fluxes, including possibly the atmospheric growth rate, must have significantly more IAV in order to close the atmospheric 13 C budget on a year-to-year basis.
    Print ISSN: 0886-6236
    Electronic ISSN: 1944-9224
    Topics: Biology , Chemistry and Pharmacology , Geography , Geosciences , Physics
    Published by Wiley-Blackwell on behalf of American Geophysical Union (AGU).
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  • 10
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    Prior human papillomavirus (HPV)-16/18 AS04-adjuvanted vaccination prevents recurrent high grade cervical intraepithelial neoplasia after definitive surgical therapy: Post-hoc analysis from a randomised controlled trial (2016)
    Wiley-Blackwell
    Details
    Publication Date: 2016-08-20
    Description: ABSTRACT We evaluated the efficacy of the human papillomavirus (HPV)-16/18 AS04-adjuvanted vaccine in preventing HPV-related disease after surgery for cervical lesions in a post-hoc analysis of the PApilloma TRIal against Cancer In young Adults (PATRICIA; NCT00122681). Healthy women aged 15-25 years were randomised (1:1) to receive vaccine or control at months 0, 1, and 6 and followed for 4 years. Women were enrolled regardless of their baseline HPV DNA status, HPV-16/18 serostatus, or cytology, but excluded if they had previous or planned colposcopy. The primary and secondary endpoints of PATRICIA have been reported previously; the present post-hoc analysis evaluated efficacy in a subset of women who underwent an excisional procedure for cervical lesions after vaccination. The main outcome was the incidence of subsequent HPV-related cervical intraepithelial neoplasia grade 2 or greater (CIN2+) 60 days or more post-surgery. Other outcomes included the incidence of HPV-related CIN1+, and vulvar or vaginal intraepithelial neoplasia (VIN/VaIN) 60 days or more post-surgery. Of the total vaccinated cohort of 18,644 women (vaccine=9,319; control=9,325), 454 (vaccine=190, control=264) underwent an excisional procedure during the trial. Efficacy 60 days or more post-surgery for a first lesion, irrespective of HPV DNA results, was 88.2% (95% CI: 14.8, 99.7) against CIN2+ and 42.6% (-21.1, 74.1) against CIN1+. No VIN was reported and one woman in each group had VaIN2+ 60 days or more post-surgery. Women who undergo surgical therapy for cervical lesions after vaccination with the HPV-16/18 vaccine may continue to benefit from vaccination, with a reduced risk of developing subsequent CIN2+. This article is protected by copyright. All rights reserved.
    Print ISSN: 0020-7136
    Electronic ISSN: 1097-0215
    Topics: Biology , Medicine
    Published by Wiley-Blackwell
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