... Tak-Ho Sun, "Einfluss von Legierungszusatzen auf die Wasserstoff diffusion im Eisen und Beitrag zurr. System Eisen- Wasserstoff" Archiv fur das ...

By means of the oscillation analysis, hydrogen absorption of a steel material is studied to avoid material damages. For the experiments the steels 50 CrV4 and 34 CrMo4 are used. The hydrogen loading produces selenium acid by cathodic polarization in an el...

The velocity constants of the reaction between deuterium atoms and vibration-excited hydrogen molecules were investigated. The measurements were performed in a thermostatically controllable flow reactor, coupled with an atomic line resonance absorption de...

Jul 27, 2009 ... Skip Navigation (press 2) ... auf- und abbaues von wasserstoff- und sauerstoffbelegungen an platin mit einer neuen instationaren methode< ...

Adsorption equilibria for helium, hydrogen, and neon on carbon dioxide layers and the effects of carbon dioxide condensation conditions on the adsorption process are studied. The dependence of gas adsorption temperatures in effective deposition is describ...

The reversible storage of hydrogen in metals and alloys is described, and the possibility of improving hydrogen storage systems with additives is discussed. Thermodynamic and kinetic data (hydrogen storage capacity, dissociation enthalpy, 1 bar decomposit...

Due to the present experiences gained in pilot projects and by the application of hydrogen in the industry it can be expected that an equivalent safety standard will be achieved for a manifold application of hydrogen as energy carrier as e.g. in the case ...

Abh�ngigkeit der Polarisation der Wasserstofflinien beim Sto� von H auf He und D auf He von der Teilchengeschwindigkeit. Die Analogie zwischen Elektronensto�- und Kanalstrahlleuchten. Die Druckabh�ngigkeit der Polarisation des Kanalstrahlleuchtens. Die Polarisation der Wasserstofflinien beim Sto� von He auf H2 und D2. Die ...

The present work discusses the adsorption of H(sub 2)O(g) as well as the reactions of D(sub 2)O(g) and D(sub 2)(g) with lithium orthosilicate (Li(sub 4)SiO(sub 4)), a potential tritium breeding ceramic for future fusion reactors. An apparatus was construc...

The object is to examine hydrogen influence on the free migration of eigen defects and their role in hydrogen diffusion by magnetic resonance measurements made by the LC oscillator method. Hydrogen shows in metal a very great diffusion capacity and a high...

Noell GmbH's task was to work out concepts for the use of the evaporating hydrogen for cooling thermal bridges and areas which are difficult to insulate by conventional methods. Examination of the heat flow over the socalled thermal bridges (penetration, ...

In the second phase of the research project ''Development of a marine transportation system for liquid hydrogen'', research activities focused on the development of an insulation system that was to allow a boil-off rate of 0.1%, materials selection for th...

Processes for the generation of peak electric power in the range of 25 MW to 100 MW, based on fuel cells and heat engines using hydrogen as fuel, are compared for their feasibility and economics. Fuel cells examined include low and high temperature system...

The reaction of H-atoms with hydroperoxyl radicals was studied in two different types of isothermal flow reactor, with and without sampling. The carrier gas was He. The absolute concentrations of the unstable species H, O, and HO were measured by ESR. Con...

Scientific and technical problems of the reversible storage of hydrogen in metals and alloys are identified, followed by a report on the thermodynamic and kinetic parameters of the reaction of hydrogen with a metal and an intermetallic compound, respectiv...

Increased creep resistance of aluminum nickel alloys through melt reaction products from nickel and hydrogen as well as the thermochemical reasons for increased creep resistance are studied. Experimental and crystallographic results show that creep resist...

For determination of the heat flux potential S and of the electrical and thermal conductivity sigma and kappa as functions of temperature the radial distributions of S, sigma and T are needed. These distributions were evaluated from measurements resp. mea...

For assessing the danger potential of a hydrogen burn during a postulated LOCA with core meltdown a detailed knowledge of the combustion behaviour of hydrogen is necessary. The reached flame velocities and thus the pressure loads imposed on the containmen...

For assessing the danger potential of a hydrogen burn during a postulated LOCA with core meltdown a detailed knowledge of the combustion behaviour of hydrogen is necessary. The reached flame velocities and thus the pressure loads imposed on the containmen...

On a stationary and cylindersymmetrical arc produced in a cascade arc chamber measurements are performed in order to determine the transport coefficients of the H2-plasma especially the electrical conductivity sigma and the heat flux potential S(S = the i...

Discussed are the possibilities of predicting sorption capacities for condensed layers of the systems H2/CH4, H2/C2H6, and H2/C3H8. Adsorption equilibria of hydrogen on methane-, ethane-, and propane-condensates are found by measuring adsorption isotherms...

Es kann ohne Zweifel behauptet werden, dass schaltbare Spiegel eine neue Klasse von Materialien bilden, die sowohl technologisch [17] als auch rein wissenschaftlich sehr interessant M�glichkeiten er�ffnen. Der mikroskopische Mechanismus, der dem spektakul�ren optischen Schalteffekt zugrunde liegt, ist jedoch noch nicht eindeutig identifiziert, wenngleich ...

A Doppler-shift spectroscopy system has been employed on the ASDEX neutral injection beamline to measure the species composition and beam divergence during injection. The optical diagnostic system, which is located in the neutral injection control room, c...

Einleitung Empirische Regeln f�r die relative H�ufigkeit der Kernsorten Die empirischen Elementh�ufigkeiten Allgemeines Die H�ufigkeit der leichteren Elemente bis Nickel Die Elemente von Wasserstoff bis Fluor Die Elemente von Natrium bis Nickel Wichtige H�ufigkeitsverh�ltnisse homologer Elemente Die H�ufigkeiten der ...

In the electricity supply grid of Western Europe, the supraregional utilities have agreed to provide a so-called primary reserve, which serves to maintain a rated frequency of 50 Hz. Imbalances between the generated and consumed electricity will cause fre...

In the electricity supply grid of Western Europe, the supraregional utilities have agreed to provide a so-called primary reserve, which serves to maintain a rated frequency of 50 Hz. Imbalances between the generated and consumed electricity will cause fre...

The catalytic action of platinum and palladium suspensions on H/sub 2/ and D/sub 2/ exchange is studied at low pressure. The concentration of the intermedinry product HD in the gas phase is measured with a mass spectrometer. The influence of experimental conditions such as D pressure, additional electrolytes, and temperature is determined. For palladium catalysts the reaction rate is ...

�ber die Realisierungsm�glichkeiten zuk�nftiger Antriebskonzepte - von Hybridsystemen Elektro-/Verbrennungsmotor �ber Brennstoffzellen bis zu alternativen Energietr�gern wie Wasserstoff oder Alkohol - werden fundierte Kriterien der Qualit�t eines Antriebs entscheiden. Leistungsdichte, Drehmomentverlauf, Beschleunigungscharakteristik, ...

In this research sub-project four main topics have been treated: (1) Physical fundamentals of high-temperature hydrides: (Mg(sub 2)Ni, Mg(sub 2)Cu, Mg(sub 17)Y(sub 3), MgCo(sub 2), Mg(sub 2)Ca, Mg(sub 17)La(sub 2), TiNi(sub x)Fe(sub y)) The target of thes...

[Im Eingange zu dieser Arbeit bemerkt der Verf., dass er bereits am 31. M�rz 1862 der Pariser Akademie eine Notiz von derselben �bergeben habe, dass er aber durch eine �hnliche Untersuchung des Hrn. De la Rive, von der er Kunde erlangt, veranlasst worden sey, das Erscheinen dieser abzuwarten, bevor er die seinige ausf�hrlich vor�ffentliche. ...

Variations of the spectral lines in high dense ion plasmas with temperature and pressure may be characterized by the broadening as well as by the shift of spectral lines. For dense hydrogen- and alkali-plasmas (free carrier density larger than 1016/cm3) one of the possible mechanisms responsible for line profiles is considered to be the Coulomb interaction with free charged carriers. Using ...

Membran-Einheit ?uer Wasserstoff/Brom Zellen", West German patent No. ... Translation of "Verfahren zur Herstellung einer Elektroden Membran- ...

Lautstarker Applaus erhob sich im Salon III/IV des Marriott-Hotels von Crystal City im amerikanischen Bundesstaat Virginia. In dem �berf�llten Konferenzraum starrten alle wie gebannt auf die Leinwand, wo nicht mehr zu sehen war als ein n�chternes Diagramm aus zahlreichen Punkten und einer geschwungenen Kurve. Nureine eigenartige Personengruppe konnte sich davon zu ...

In the present dissertation the construction and application of a mobile laser system for the remote detection of sulfur dioxide and ozone in the lower troposphere are described. The lidar uses the differential absorption and scattering technique. It cont...

Investigations on the thermodynamics and kinetics of the absorption of volatile compounds in high boiling scrubbing agents have been carried out in a previous PEF-project. Within this project it was shown that besides glycol ethers other compounds may be ...

In the context of the research project the scrubbing of air contaminated by peculiar volatile organic compounds was investigated using the absorption technique by means of high boiling organics as washing liquids. Eight chlorinated hydrocarbons well known...

Direct absorption spectroscopy is used for the measurement of atmospheric OH; autocalibration is achieved by laser induced fluorescence. Measurements by optical absorption present problems concerning the selfproduction of OH, test sensitivity and interact...

Absorption-and scattering-losses of dielectric evaporated layer systems are determined by thermal resistance measurements. The specific effects of several parameters on absorption coefficients of various materials are determined for single layers, and the...

An apparatus for calorimetric absorption spectroscopy (CAS) and calorimetric transmission spectroscopy (CTS) at temperatures up to 1.3K, including computer control, data acquisition, and data evaluation, was built. At 1.3K, products of absorption coeffici...

The production of titanium nitrides and carbides by laser fusion with methane or nitrogen as a reaction gas is considered. The process parameters, such as optical elements, energy, radiation absorption, and their influence in ceramics layer quality, were ...

The sounding of IR absorption lines with high optical thickness of IR-active trace gases in the stratosphere was investigated. The significance of the sensitivity of the radiance, integrated over a line, on changes in the absorber mass, is discussed. The ...

Reports of the deliberate destruction of the environment have become increasingly alarming, and the existing fossil and nuclear energy systems are partly responsible for this development. For the first time in the history of energy supply starting from th...

The report describes the experience made with the practical operation of a LH(sub 2) filling station for hydrogen-fuelled vehicles. (HW)

The detectability of defective adhesions in carbon fiber composites (CFC) by X-ray procedure is shown to be improved by increasing the absorption capacity of the adhesive, adding the contrast substances barium sulfate or aluminum. The adhesives BSL 313 A ...

Ultrasonic and viscosity measurements were carried out in a high density polyethylene melt. The ultrasonic measurements are related to the average temperature in the melt volume penetrated by sound pulses. Sound velocity and absorption measurements were p...

The absorption spectrum of the photodissociation process of water, and the vibration distributions, summed over all final rotations of the fragment, were calculated. It is shown that, using mass-scaled polar coordinates, continum functions, which describe...

The transmission properties of CdS in the band discontinuity is evaluated with the sharp absorption structures of excitonic excitation states and by a broadband defect-correlated absorption. A broadband induced transmission could be observed with increasi...

The Gurevich-Pomeranchuk theory of resonance absorption is considered. This half-empirical theory gives a view of the process of resonance absorption in heterogeneous reactors and shows good agreement with experimental values. The general formulas are given. The cases of thin and thick rods were considered. (M.C.G.)

Acquired von Willebrand disease (AVWD) is a rare, underdiagnosed hemorrhagic disorder, which is similar to congenital VWD with regard to the clinical and laboratory parameters; however, it is found in individuals with no positive family history and has no genetic basis. The etiology is varied, the commonest being hematoproliferative disorders and cardiovascular disorders. ...

Indium foils are often used for measurements of neutron fields by detection of the decay electron from In/sup 116/. The absorption of this electron by the indium metal therefore affects the activity measured. In/sup 116/ also emits gamma radiation with energies between 0.1 and 2.32 Mev. The absorption constants for these radiations were ...