Photooxidative production and microbial consumption of carbon monoxide in seawater
Ralf Conrad, Wolfgang Seiler; Photooxidative production and microbial consumption of carbon monoxide in seawater, FEMS Microbiology Letters, Volume 9, Issue 1,
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Paramagnetic Spin Relaxation Due to Spin–Spin Interaction Assisted by Spin–Phonon Interaction or Vice Versa (I)
Abstract The electronic spin–spin relaxation is induced by a dipolar magnetic coupling between the spin states of a pair of paramagnetic ions, whereas the interaction between spin states and lattice vibrations is responsible for the spin–lattice relaxation. Two‐phonon Raman and Orbach spin–lattice relaxation processes…
Improvement of the room-temperature behavior of metal tritides with respect to 3He release: Titanium
In aged titanium tritide Ti 3 Hex thin films the 3He local critical concentration is slightly technology dependent and appears not to depend on the initial overall tritium concentration for x values lower than 1.5, which in fact results from a two-phase system: Ti and Ti 3H1.5. As it is not possible to increase signif…
Protein Conversion to Glucose: An Evaluation of the Quantitative Aspects
The amount of glucose that can be synthesized from a protein depends on its amino acid (AA) composition. This value is about 60 g from 100 g of liver or muscle protein and is based on a knowledge of the total AA content and the proportion of each AA that can be converted to pyruvate. The maximum quantity of glucose in…
The determination of the relationship between derivative lattices
Derivative lattices are related to one another by transformation matrices having rational elements. A simple algorithm for finding these matrices consists in testing if the scalar products of the vectors defining two arbitrary primitive cells of two lattices can be exactly or approximately related by equations with ra…
Flavonoid Glycosides in Ammannia coccinea (Lythraceae)
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTFlavonoid Glycosides in Ammannia coccinea (Lythraceae)Shirley A. Graham, Barbara N. Timmermann, and Tom J. MabryCite this: J. Nat. Prod. 1980, 43, 5, 644–645Publication Date (Print):September 1, 1980Publication History Published online1 July 2004Published inissue 1 September…
Grafting onto Cellulose. VI. Graft Copolymerization of Vinyl Acetate by Use of Metal Chelates as Initiators
Graft copolymerization of vinyl acetate (VAc) onto cellulose has been studied in an aqueous medium in the presence of Fe(acac)3, Al(acac)3, and Zn(acac)2 as initiators. Percentage of grafting has been determined as a function of concentration of initiators and monomer, reaction time, and temperature. The reactivities…
Anorganische Fasern. Herstellung, Eigenschaften und Verwendung
Abstract Aufgrund einer Analyse der Eigenschaften der heute bevorzugten Verstärkungsfasern aus Glas und Kohlenstoff wird gezeigt, daß es anorganische Materialien gibt, die die Vorteile der obigen Fasern unter Vermeidung deren Nachteile vereinigen. Als repräsentative Beispiele werden die Borfaser, die Siliziumkarbidfas…
Ways of poly (vinyl chloride) stabilization
Abstract Main results of research on poly (vinyl chloride) (PVC) stabilization are discussed. Stabilization is viewed from the standpoint of the modern notions of the reasons for PVC low thermal stability, the complicated nature of its dehydrochlorination, and the kinetics of its degradation. The internal unsaturated…
Metal-metal stretching frequencies in metal-cluster complexes. Approximate force constant calculations for some small metal clusters
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTMetal-metal stretching frequencies in metal-cluster complexes. Approximate force constant calculations for some small metal clustersIan A. OxtonCite this: Inorg. Chem. 1980, 19, 9, 2825–2829Publication Date (Print):September 1, 1980Publication History Published online1 May 2…
Adsorption of alcohols by smectites: III. Nature of the bonds
Abstract In previous papers of this series it was shown that it is possible to determine both the amount of methanol adsorbed in the interlamellar space of charge-deficient Ca-montmorillonite or of homoionic clays and the amount of methanol occluded in a system of micropores between clay particles. This paper deals wi…
Effects of the Sea Water Carbon Dioxide System on the Corrosion of Aluminum
The corrosion behavior of alloy 5052 and 99.99% aluminum in 3% NaCl is compared with that in natural and synthetic sea waters at pH 7.2 and 8.2. The differences in behavior observed with variations in pH, electrolyte, or temperature are reconciled in terms of the sea water carbonic acid system. It is suggested that a…
Mise en Évidence d'un Nouveau Sulfoiodure d'Étain et d' Antimoine Sn2SbS2I3: Étude Structurale
Abstract Le composé nouveau Sn 2 SbS 2 I 3 a étSeA isolé dans I'étude du système SnSSbI 3 et sa structure a été déterminée. La maille est orthorhombique, groupe d'espace Cmcm avec a = 4,275(1), b = 14,059(3), c = 16,465(3) Å et Z = 4. L'affinement des paramètres atomiques par moindres carrés conduit à une valeur de R…
Adhesive Bonding of Aircraft Primary Structures
<div class="htmlview paragraph">The Primary Adhesively Bonded Structures Technology (PABST) program conducted by McDonnell Douglas for the USAF Plight Dynamics Laboratory has broadened the horizons for future applications of adhesive bonding to aerospace structures. A major portion of this program was concerned…
The granulation of ternary mixtures: the effect of the wettability of the powders
Granules have been prepared by a standard method from ternary mixtures of lactose, boric acid and either sulphanilamide, heavy kaolin or salicylic acid, using an aqueous solution of polyvinylpyrrolidone as binder. The granules were examined for size distribution and for the work required to crush larger granules from…
Effect of Curing Temperature and Curing System on Structure-Property Relations of Rubber Blends
Abstract In the present paper we have studied the effects of curing temperature (150° and 180°C) and curing system (conventional and efficient vulcanization) on 1) the technical properties, 2) polymer-filler interaction and 3) network structure of NR-BR, NR-SBR-BR, NR-SBR blends. On the basis of cure rate and interpha…
Über Oxoantimonate(III) und Oxobismutate(III) Zur Kenntnis von Na3SbO3 und Na3BiO3 [1]
Abstract Erstmals wurden Einkristalle von Na 3 SbO 3 und Na 3 BiO 3 (beide farblos) dargestellt. Beide Kristallisieren Kubisch, F 4 3m, mit a = 9,56 4 (Na 3 SbO 3 ) und a = 9,68 7 (Na 3 BiO 3 ), Z = 8,538 bzw. 431 hkl, R = 0,062 bzw. 0,067, MoKα, Vierkreisdiffraktometer. Die Struktur, gemäß Na 3 SbO 3 □ eine NaCl‐Vari…
A record of some coastal marine diatoms from Porirua Harbour, North Island, New Zealand
Summary One hundred and fifty species of marine planktonic and littoral diatoms collected from around Porirua Harbour are recorded and illustrated. Taxonomic notes and remarks are given for some species and one new variety, Gyrosigma balticum var. turgidum is described. Twenty‐five of the species are new New Zealand r…
Assessment of light-water-reactor fuel damage during a reactivity-initiated accident
This paper presents an assessment of LWR fuel damage during a reactivity initiated accident and comments on the adequacy of the present USNRC design requirements. Results from early SPERT tests are reviewed and compared with results from recent computer simulations and PBF tests. A progression of fuel rod and cladding…
Geochemistry and mineralogy of weathered basalt from Morvern, Scotland
Summary The chemical, mineralogical, and textural changes involved in the weathering of basalt have been traced through various stages from fresh rock (which has a cation exchange capacity of 10 meq/100 g due to the presence of a swelling chlorite mineral) to reddened basaltic rubble consisting of interstratified mont…