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  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Industrial & engineering chemistry 49 (1957), S. 2046-2050 
    ISSN: 1520-5045
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 186 (1960), S. 304-305 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Rate of transformation was read from a record of dilatation against time, using a transducer system capable of high sensitivity over a wide range and of proved stability. The temperature, which was maintained constant for long enough to establish a definite rate, was recorded on the same chart as ...
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1435-2451
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Zusammenfassung 1. Elf Patienten wurden mit Hilfe der extrakorporalen Zirkulation wegen eines Aneurysmas der Aorta ascendens operiert. Bei zehn dieser Patienten wurde die Aorta mit einem Dacrontransplantat ersetzt. 2. Neun Patienten hatten eine begleitende Aorteninsuffizienz. Ein Prolaps des nichtcoronaren Aortensegels auf Grund einer Dissection der Aortenbasis war die Ursache bei 5 Fällen; die Aortenklappe konnte bei all diesen Patienten durch Rekonstruktion der Aortenwurzel mit Teflonfilzstreifen vollständig dicht gemacht werden. Vier Patienten benötigten einen Aortenklappenersatz. 3. In dieser Gruppe waren zwei Frühtodesfälle und ein Spättodesfall zu verzeichnen. Die übrigen 8 Patienten sind asymptomatisch. 4. Eine Methode der Unterstützung der erkrankten Aortenwurzel wird beschrieben.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Contributions to mineralogy and petrology 99 (1988), S. 113-125 
    ISSN: 1432-0967
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract Fine grained gabbroic chilled margins and crosscutting dikes are associated in space and time with three ca. 1400 Ma anorthositic plutons in the Flowers River area, southeastern Nain igneous complex. Both the anorthositic and gabbroic rocks have distinctive compositions compared to rocks of similar age and lithology elsewhere in northcentral Labrador. The anorthositic rocks contain olivine and augite rather than orthopyroxene, and Fe-Ti oxides, apatite and orthoclase are unusually abundant. Cumulus plagioclase is abnormally enriched in incompatible elements. Most of the gabbroic rocks are uniform in composition, although the effects of contamination and fractionation are evident in some places. They define a transitional to alkalic ferrogabbro magma that is strongly enriched in K, P and incompatible trace elements. The chemical characteristics of the ferrogabbro magma imply derivation from enriched mantle or involvement of a significant crustal component. A parent-daughter relationship between the ferrogabbro magma and anorthositic rocks is suggested by their compositional similarities and the fact that the gabbroic chilled margins and plagioclase-rich pluton interiors appear to be completely gradational in composition and texture.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Journal of molecular medicine 58 (1980), S. 387-394 
    ISSN: 1432-1440
    Keywords: Ventricel septum defect ; Myocardial infarction ; Cardiogenic shock ; Ventrikelseptumruptur ; Herzinfarkt ; Cardiogener Schock
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Die pathologisch-anatomischen und pathophysiologischen Veränderungen bei Ruptur des interventrikulären Septums im Gefolge des Herz-infarktes, sowie das klinische Erscheinungsbild sind anhand der Literatur dargestellt und unsere Erfahrungen mit der operativen Behandlung bei 25 Patienten mitgeteilt. Eine deutliche Zäsur ergibt sich um das Jahr 1970, da hier entscheidende Änderungen sowohl der Operationstechnik als auch in der prä- und postoperativen Behandlung der Patienten gemacht wurde. Von den 8 vor 1970 operierten Patienten verstarben 7 (87,5%), von den 17 nach 1970 operierten starben 7 (41,1%). Als bedeutsam für den operativen Erfolg erwies sich auch der Zeitpunkt der Operation: Die 23 Patienten, die innerhalb der ersten 6 Wochen nach dem auslösenden Infarkt operiert wurden, hatten eine Mortalität von 60%, die nach 6 Wochen operierten Patienten überlebten beide. Wenn man nur die nach 1970 innerhalb der 6-Wochen-Frist operierten Patienten (n=15) betrachtet, ergibt das eine Mortalität von 46,6%. Unsere Daten entsprechen denen anderer Autoren. Das Auftreten des Ventrikelseptumdefektes nach einem akuten Myocardinfarkt geht in der Regel mit einer Verschlechterung des hämodynamischen Zustandes einher. Ist dieser Zustand medikamentös nicht beherrschbar, muß die Operation auch innerhalb der ersten 6 Wochen nach dem auslösenden Infarkt durchgeführt werden. Trotz der im Vergleich zu elektiven kardiochirurgischen Eingriffen noch relativ hohen Mortalität ergibt sich ein deutlicher Vorteil, wenn man bedenkt, daß von den rein konservativ behandelten Patienten 80% innerhalb der ersten 6 Wochen verstarben.
    Notes: Summary The literature on the pathophysiology and physiopathology of the ruptured interventricular septum of the heart following myocardial infarction and the clinical features are reviewed. The results of the surgical management of 25 patients with ruptured interventricular septum are reported. It had to be distinguish between the results among those, operated upon before and after 1970, as significant changes in operative technique and perioperative management were made at this time. Out of 8 patients operated upon before 1970 7 (87.5%) died, while out of 17 patients operated upon after 1970 7 (41.1%) died. Most important for the surgical outcome was the timing of the procedure: 23 patients operated upon within 6 weeks following the initial infarction had a mortality of 60%, both patients operated upon later than six weeks following the infarction survived. When only reviewing the patients operated upon after 1970 but within 6 weeks following the initial infarction (n=15) we encountered a mortality of 46.6%. Our data match with those of other authors. The rupture of the interventricular septum as sequelae of an acute myocardial infarction results in detoriation of the hemodynamic parameter. Is the situation not sufficiently managed by medical treatment, operation has to be performed within 6 weeks following the initial infarction. Though mortality is high when compared with elective cardiovascular procedures, surgery gives a significant advantage, when considering a mortality of 80% within 6 weeks following the initial infarction on medical therapy alone.
    Type of Medium: Electronic Resource
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  • 6
    Publication Date: 2016-10-08
    Description: Despite growing recognition of the negative externalities associated with reactive nitrogen (N), the damage costs of N to air, water, and climate remain largely unquantified. We propose a comprehensive approach for estimating the social cost of nitrogen (SCN), defined as the present value of the monetary damages caused by an incremental increase in N. This framework advances N accounting by considering how each form of N causes damages at specific locations as it cascades through the environment. We apply the approach to an empirical example that estimates the SCN for N applied as fertilizer. We track impacts of N through its transformation into atmospheric and aquatic pools and estimate the distribution of associated costs to affected populations. Our results confirm that there is no uniform SCN. Instead, changes in N management will result in different N-related costs depending on where N moves and the location, vulnerability, and preferences of populations affected by N. For example, we found that the SCN per kilogram of N fertilizer applied in Minnesota ranges over several orders of magnitude, from less than $0.001/kg N to greater than $10/kg N, illustrating the importance of considering the site, the form of N, and end points of interest rather than assuming a uniform cost for damages. Our approach for estimating the SCN demonstrates the potential of integrated biophysical and economic models to illuminate the costs and benefits of N and inform more strategic and efficient N management.
    Electronic ISSN: 2375-2548
    Topics: Natural Sciences in General
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  • 7
    Publication Date: 2014-12-31
    Description: Commonly considered strategies for reducing the environmental impact of light-duty transportation include using alternative fuels and improving vehicle fuel economy. We evaluate the air quality-related human health impacts of 10 such options, including the use of liquid biofuels, diesel, and compressed natural gas (CNG) in internal combustion engines; the use...
    Keywords: Sustainability Science
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
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  • 8
    Publication Date: 2015-07-29
    Description: Oron (1) argues that our study (2) uses “inappropriate” methods and is framed in a way that leads “readers toward misguided conclusions.” Both of these arguments are misplaced and seem more focused on some media coverage of our article than on our article itself. Oron’s (1) specific critiques do not...
    Keywords: Letters, Sustainability Science
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
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