The AIF Research Project No 7698 was concerned with the nitrification of highly contaminated waste water with retention of biomass. A compact system for the nitrification was developed and optimized in the investigations. This is an over-dammed fixed bed ...
National Technical Information Service (NTIS)
Fundamental investigations into the biosorption of environmentally relevant heavy metals were carried out with different microbial adsorbents, and processes were proposed for industrial effluents. In order to improve the technology of biosorption processe...
Infrared sensors were developed for the continuous measurement of halogenated hydrocarbons in wastewaters; they work according to the membrane ATR (ATR: Attenuated Total Reflection) method. ATR crystals were from zinc selenide coated with a polymeric diap...
It can be demonstrated that waste waters which contain uranium in a filterable form, such as laundry and floor-cleaning waste, can be sufficiently decontaminated by means of ultrafiltration. In the case of process waste solutions, which contain uranium in...
In connection with the national soil protection law (Bundesbodenschutzgesetz), it is planned for risk assessment to estimate concentrations of contaminants in soil water according to the preliminary standard DIN V 19736. In this standard, a method is desc...
A method is developed for the retrieval of the horizontal wind vector from Doppler data of a single weather radar. For a horizontal resolution of about 5 km, the accuracy of this method is about 2-5 m/s. This method is applicable for studies of mesoscale ...
The computer-aided production of a map of the heat load on man in the southern Black Forest (West Germany) on the Upper Rhine plane between Freiburg and Basel was investigated. A geographic information system was established using data from a climate mode...
Sewage sludge samples were taken from nine differently sized sewage treatment plants at monthly intervals. The samples were analyzed for dry residues, residues on ignition, 7 heavy metal components and 15 polycyclic aromatic hydrocarbons. Assuming a norma...
Nach der Methode der Koordinatentransformation wird f�r die 2-Teilchen-Dichtematrix eine notwendige Bedingungsgleichung in Form einer Integrodifferentialgleichung abgeleitet. Die Beziehung dieser Gleichung zur Hartree-Fockschen N�herung und zu einem 2-Teilchen-Verfahren von Bopp wird untersucht. Die Verwendung der Gleichung wird nur kurz diskutiert, da sie analog ist zu ...
NASA Astrophysics Data System (ADS)
A statistical derivation is given of a general explicit formula for the free energy of low density plasmas, which was proposed in an earlier paper. Starting from the cluster expansion of the free energy of quantum plasmas, the generalized second virial coefficient is expressed in terms of the two particle scattering phase shifts, which are exactly known in the case of COULOMB interactions. The ...
SUMMARY: Computing properties of better derivative and derivative-free algorithms were compared both theoretically and practically. Assuming that the log-likelihood function is approximately quadratic, in a t-trait analysis the number of steps to achieve convergence increases as t(2) in 'better' derivative-free algorithms and is independent of that number in 'better' derivative algorithms. The ...
PubMed
Wie bekannt f�hrt die Theorie der Elektronenst��e an neutralen Atomen zu einem Mehrelektronenproblem. Die wichtigsten wellenmechanischen N�herungsverfahren f�r die Elektronensto�probleme an Atomen sind das Variationsverfahren und die Methode des self consistent field von Hartree, bzw. von Hartree und Fock. Das wellenmechanische ...
I. Gefragt ist nach der Art und Weise, in der sich die Entstehung der Sterne �ber das bisherige Alter unserer Milchstra� verteilt hat. Die zeitliche Rate der Sternentstehung, R(t), ist dabei definiert als die Anzahl derjenigen Sterne, die zur Zeit t (pro Zeit- und Volumeneinheit) neu entstanden sind. Gegen das Ergebnis fr�herer Untersuchungen, R(t) ungef�hr const, lassen sich Einw�nde ...
Sep 9, 2009... [Stahlungstransport- und Inversions-Algorithmen zur Ableitung atmospharischer Spurengasinformationen aus Erdfernerkundungsmessungen in ...
NASA Website
Da es noch keine Ionenquelle f�r hohe Ionenstr�me mit sonst allgemein guten Eigenschaften gibt, soll nach g�nstigen Methoden zur Stromsteigerung von Ionenquellen gesucht werden.Grundlegende �berlegungen �ber die prinzipielle Arbeitsweise von Ionenquellen ergeben zun�chst, da� besonders die Verbesserung des Extraktionsvorgangs wichtig ist. ...
The following investigations are described: (1) Isolation and cultivation of marine luminescent bacteria, especially strains with higher optimum temperatures, testing of their applicability in toxicity tests, and attempts to standardize the procedure. (2)...
The all particle primary spectrum of GRIGOROV et al. surveyed by HILLAS has been fitted by a power law fit of the formIall particle(>E) = 1.3 E-1.65 (cm2 s sr)-1where E is the energy in GeV/nucleus. Using our recently determined conversion factor for protonnuclei flux ratio of equal energies the primary proton spectrum has been calculated and the result agrees with the Goddard Space Flight ...
A method developed recently by the author to derive a continuum of conservation laws by Noether's theorem from the so-called extended B�cklund transformations is applied to the KORTEWEG-DE VRIES equation that describes various nonlinear dispersive wave phenomena in hydrodynamics, plasma physics and solid state physics. Further applications of Noether's theorem concerning this equation are given. ...
Using the recently derived primary cosmic ray nucleon spectrum from JACEE and GSFC balloon flight data and Fermilab results for pp +/- + X anything inclusive reaction data in the light of Feynman scaling the depth-intensity spectrum under standard rock has been estimated. A precisely constructed range-energy relation has been applied in this analysis. The derived spectrum when corrected for range ...
The equations of motion of a two-level system and a harmonic oscillator coupled to a dissipative system are discussed; the dissipative system is assumed to consist of a large number of radiation oscillators. Special equations for the determination of the correlation functions of the fluctuation forces are derived under the condition of large time values, for which the atomic system has forgotten ...
"Mustererkennung" folgende Zeile eingef�gt: Nachrichtenverkehrstheo- rie I E Grundprinzipien der Warte- und Warte- und Verlustsysteme: Betrach- tung der relevanten Verteilungen; Ableitung der Erlang- schen Verlustformel; Struktur der Warte 3 #12;14/2001 Verk�ndungsblatt der Universit�t Hannover vom 05.10.2001 Seite 10
E-print Network
) triangular matrix(obere) Dreiecksmatrix entry Eintragung function Funktion 1 #12; torsion subgroup Torsionsuntergrupe (free) abelian (frei) abel* *sch linearly Inhalt (formal) derivative (formale) Ableitung remainder Rest (bei D* *ivision) field
The existing theory of prediction of the appearance of colours under different viewing conditions are reviewed : It appears that no unique set of three fundamental stimuli proved suitable for deriving prediction formulae of general applicability on the basis of the trichromatic theory and the coefficient law. Nor was it possible to use these principles to derive a unique set of three fundamental ...
Language: German ...
NBII National Biological Information Infrastructure
