R. Kern

Details der Publikationsliste

Zeitraum

1878 - 2009

Anzahl

157

Co-Autoren

Behavioral/Systems/Cognitive On the Computations Analyzing Natural Optic Flow: Quantitative Model Analysis of the Blowfly Motion Vision Pathway (2008)

J. P. Lindemann, R. Kern, H. Ritter, M. Egelhaaf

For many animals, including humans, the optic flow generated on the eyes during locomotion is an important source of information about self-motion and the structure of the environment. The blowfly...

J.Neurosci) Function (2008)

R. Kern, G. Schwerdtfeger, M. Egelhaaf

and coding in the blowfly H1 neuron during naturalistic optic flow

Industrial applications of 3MA - Micromagnetic multiparameter microstructure and stress analysis (2008)

Dobmann, G., Altpeter, I., Wolter, B., Kern, R.

Micromagnetic NDT techniques like the measurement of the magnetic Barkhausen noise, the incremental permeability and the harmonic analysis of the tangential magnetic field allow deriving inspection...

Industrial applications of 3MA - Micromagnetic multiparameter microstructure and stress analysis (2008)

Dobmann, G., Altpeter, I., Wolter, B., Kern, R.

Micromagnetic NDT techniques like the measurement of the magnetic Barkhausen noise, the incremental permeability and the harmonic analysis of the tangential magnetic field allow deriving inspection...

Equilibrium nano-shape changes induced by epitaxial stress (generalised Wulf-Kaishew theorem) (2007)

Muller, P., Kern, R.

A generalised Wulf-Kaishew theorem is given describing the equilibrium shape (ES) of an isolated 3D crystal A deposited coherently onto a lattice mismatched planar substrate. For this purpose a free...

Surface melting of nanoscopic epitaxial films (2007)

Muller, P., Kern, R.

By introducing finite size surface and interfacial excess quantities, interactions between interfaces are shown to modify the usual surface premelting phenomenon. It is the case of surface melting of...

UV-stabilisierendes Halbleitermaterial, insbesondere fuer Solarzellen, sowie Verfahren zur Herstellung (2006)

Kern, R., Hinsch, A., Hore, S.

DE1004054756 A UPAB: 20060703 NOVELTY - A UV stabilised semiconductor material, especially for solar cells, comprises a semiconductor oxide and at least one UV stabilising element, eg Mg or Ca. The...

Verfahren zur Herstellung der Photoelektrode einer Solarzelle (2006)

Kern, R., Nitz, P., Hore, S.

US2006102226 A UPAB: 20060616 NOVELTY - Producing a photoelectrode (3) of a solar cell involves applying a layer (2) of a nanocrystalline semiconductor material on a substrate (1) and then sintering...

Influence of scattering layers on efficiency of dye-sensitized solar cells (2006)

Hore, S., Vetter, C., Kern, R., Smit, H., Hinsch, A.

Thin titaniumdioxide (TiO2) semiconductor layer with different scattering layers was investigated in dye-sensitized solar cells (DSSC). Since the cost of the photoactive dye in the DSSC is relatively...

Catalytic platinum layers for dye solar cells: A comparative study (2006)

Khelashvili, G., Behrens, S., Weidenthaler, C., Vetter, C., Hinsch, A., Kern, R., ...

Comparative investigations concerning the preparation and characterization of zerovalent platinum nanoparticles to be used as precursors for dye-sensitized solar cells (DSSCs) have been carried out....

New interdigital design for large area dye solar modules using a lead-free glass frit sealing (2006)

Sastrawan, R., Beier, J., Belledin, U., Hemming, S., Hinsch, A., Kern, R., ...

A new interdigital design for large area dye solar modules is developed for an area of 30 x 30 cm(2). This design requires fewer holes in the glass substrate for electrolyte filling, than the...

Production and characterization of ITO-Pt semiconductor powder containing nanoscale noble metal particles catalytically active in dye-sensitized solar cells (2006)

Katusic, S., Albers, P., Kern, R., Petrat, F.M., Sastrawan, R., Hore, S., ...

Doped indium tin oxide (ITO) samples of a surface area around 60 m2/g have been synthesized. As doping component platinum and gold atoms were utilized, respectively. The powders were produced by...

Encoding of Naturalistic Optic Flow by a Population of Blowfly Motion-Sensitive Neurons (2006)

K. Karmeier, R. Kern, M. Egelhaaf, H. Cuntz, J. Haag, ...

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Scattering spherical voids in nanocrystalline TiO2 - Enhancement of efficiency in dye-sensitized solar cells (2005)

Hore, S., Nitz, P., Vetter, C., Prahl, C., Niggemann, M., Kern, R.

Spherical voids as light scattering centers in nanocrystalline TiO2 films were realized with polystyrene particles of diameter 400 run, thus enhancing the photovoltaic performance by 25% on large...

Impedance spectroscopy on organic bulk-heterojunction solar cells (2005)

Glatthaar, M., Mingirulli, N., Zimmermann, B., Ziegler, T., Kern, R., Niggemann, M., ...

We measured the electrical impedance spectra of organic bulk-heterojunction solar cells based on an absorber blend of poly(3-hexylthiophene) and [6,6]-phenyl C-61-butyric acid methyl ester. Comparing...

Industrial integration of residual stress measuring NDT-systems based on ultrasonics and micromagnetics (2005)

Altpeter, I., Dobmann, G., Kern, R., Schneider, E., Wolter, B., Spies, M.

For years, Fraunhofer-IZFP has developed NDT methods for the characterization of residual stresses, that have been introduced into industrial practice. These NDT methods are based on micromagnetic...

Automatic Scoring and Quality Assessment Using Accuracy Bounds for FP-TDI SNP Genotyping Data (2005)

Kschischo, M., Kern, R., Gieger, C., Steinhauser, M., Tolle, R.

Background: Human diversity, namely single nucleotide polymorphisms (SNPs), is becoming a focus of biomedical research. Despite the binary nature of SNP determination, the majority of genotyping...

Zerstörungsfreie Bestimmung von Qualitätsmerkmalen bei der Grobblechfertigung (2005)

Wolter, B., Kern, R., Schneider, E., Hofmann, U., Meilland, C.

Der Einsatz der zerstörungsfreien Prüfung während oder unmittelbar nach dem Wärmebehandlungs- und Walzprozess ist ein wichtiges Hilfsmittel, um den steigenden Anforderungen hinsichtlich der...

Kontinuierliche Inline-Prüfung von Qualitätsmerkmalen in Feinblech (2005)

Wolter, B., Dobmann, G., Kern, R.

Eine kontinuierliche und somit nicht nur stichprobenbasierte Überwachung und Dokumentation der Produktqualität gelingt mit Inline-Prüfsystemen auf Basis zerstörungsfreier Prüfverfahren (zfP)....

Implication of device functioning due to back reaction of electrons via the conducting glass substrate in dye sensitized solar cells (2005)

Hore, S., Kern, R., Hinsch, A.

Enhanced efficiency of dye sensitized solar cells requires minimization of all electron losses in the device. In addition to the loss via the nanoparticles of TiO2, the loss via the surface of the...

Impedanzspektroskopische Untersuchungen an organischen Solarzellen (2005)

Mingirulli, N., Wittwer, V., Kern, R.

Diplomarbeit an der Universität Karlsruhe, Fakultät für Physik. Durchgeführt am Fraunhofer-Institut für Solare Energiesysteme -ISE-, Freiburg.

Motion Adaptation Leads to Parsimonious Encoding of Natural Optic Flow by Blowfly Motion Vision System (2005)

J. Heitwerth, R. Kern, M. Egelhaaf, K. S. Gaudry, P. Reinagel, ...

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Catalytic platinum layers for dye solar cells. A comparative study. (2005)

Khelashvili, G., Behrens, S., Weidenthaler, C., Vetter, C., Hinsch, A., Kern, R., ...

Spring Meeting of the European Materials Research Society, Strasbourg, May 31 - June 3, 2005 (Poster)

Developing planetary protection technology- microbial diversity of the Mars Orbiter Odyssey and the spacecraft assembly and encapsulation facility II (2004)

Duc, M. La, Chen, F., Kern, R., Koukol, R., Baker, A., Venkateswaran, K.

A study in which several surface samples, retrieved from both the Mars Odyssey Spacecraft and the Kennedy Space Center (KSC) Spacecraft Assembly and Encapsulation Facility II (SAEF-II), were prcesed...

Exploring Europa's Ocean: A Challenge for Marine Technology of this Century (2004)

Carsey, F., Chen, G., Cutts, J., French, L., Kern, R., Lane, A., ...

The Galileo spacecraft has sent back tantalizing image data hinting at a vast ocean beneath a thick ice crust on Europa, one of Jupiter's moons which is about the size of our moon.

Characterization and Description of Heat-tolerant Bacillus Species Isolated Form Spacecraft Assembly Facility (2004)

Venkateswaran, K., Satomi, M., Chung, S., Kern, R., Koukol, R.

Forward contamination of samples with cells or biomarkers from Earth would seriously compromise interpretation of results of a Space sample return mission.

Phylogenetic Characterization and Description of Novel Heat-tolerant Bacillus Species Isolated form Spacecraft Assembly Facility (2004)

Venkateswaran, K., Vu, A., Musick, M., Echeverria, C., Chung, S., Satomi, M., ...

Microbial biofilms representing both Gram-positive and Gram-negative bacteria were artificially coated onto aluminum metal surfaces that are chiefly used in building spacecraft.

Planetary protection technologies at the Jet Propulsion Laboratory (2004)

Basic, C., Kern, R., Rohatgi, N., Koukol, R., Barengoltz, J.

This paper presents a summary of the planetary protection technology development efforts currently being conducted at the Jet Propulsion Laboratory (JPL). This is a multidisciplinary effort involving...

Report of the organic contamination science steering group (2004)

Mahaffy, P., Beaty, D., Anderson, M., Aveni, G., Bada, J., Clemett, S., ...

The primary focus of this study was organic contamination introduced into those Mars samples that would be delivered to sensitive analytical instruments after processing by lander acquisition and...

Microbial characterization of deep-sea hydrothermal vent plumes (2004)

Duc, M. T. La, Venkateswaran, K., Kern, R., Kempt, M., Benardini, J. N., Lubarsky, M.

Characterization of novel microbes that possess various resistance capabilities can serve as a model from which new spacecraft cleaning and sterilization technologies may be developed.

Mechanical property determination of heavy steel plates and cold rolled steel sheets by micro-magnetic NDT (2004)

Dobmann, G., Wolter, B., Kern, R.

The presentation is to results recently obtained in collaborative research in the European steel programme performed by Fraunhofer-IZFP and co-operative steel industry producing rolling products. The...

Farbstoffsensibilisierte photovoltaische Zelle, ein Verfahren zur Herstellung dieser photovoltaischen Zellen sowie deren Verwendung (2004)

Petrat, F., Stuetzel, B., Schmidt, F.G., Michael, G., Gutsch, A., Katusic, S., ...

DE 10249246 A UPAB: 20040616 NOVELTY - Photovoltaic cells comprise a catalytic intermediate layer comprising a highly porous catalytically active conductive layer having metal catalyst particles...

Mechanical property determination of heavy steel plates and cold rolled steel sheets by micro-magnetic NDT (2004)

Dobmann, G., Wolter, B., Kern, R.

The presentation is to results recently obtained in collaborative research in the European steel programme performed by Fraunhofer-IZFP and co-operative steel industry producing rolling products. The...

Journal of Crystal Growth Volume 246, Nos. 1-2, pp.1-176, December 2002 (2003)

Stringfellow, G. B., Schieber, M., Feigelson, R. S., Hurle, D. T., Kern, R.

Partial Contents: Classical semiconductors. Temperature control in InGaAs-based quantum well Structures grown by molecular beam epitaxy on GaAs (100) and GaAs (111)B substrates; Atomic depth...

Zerstörungsfreie Bestimmung von Qualitätsmerkmalen bei der Grobblechfertigung (2003)

Wolter, B., Kern, R., Buchholz, O., Hofmann, U.

Der Einsatz der zerstörungsfreien Prüfung während oder unmittelbar nach dem Wärmebehandlungs- und Walzprozess ist ein wichtiges Hilfsmittel, um den steigenden Anforderungen hinsichtlich der...

Detection and quantification of grinding damage by using EC and 3MA techniques (2003)

Wolter, B., Theiner, W., Kern, R., Becker, R., Rodner, C., Kreier, P., ...

Grinding is used as manufacturing process for finishing of hardened surfaces. In dependence of the grinding parameters, the material and the component form the near-surface material warms up locally...

Robust solutions of inverse problems in eletromagnetic non-destructive evaluation (2002)

Altpeter, I., Becker, R., Dobmann, G., Kern, R., Theiner, W., Yashan, A.

Non-destructive testing (NDT) is the application of physical measurement technology based on energy interaction with the material and its nonconformities. The material's response is sensed by...

Process-integrated nondestructive testing of ground and case hardened parts (2002)

Theiner, W., Kern, R., Stroh, M.

Heat treatments and finishing processes are necessary to give materials under extreme load the desired strength, shape, and surface quality. Present quality management systems use tests that are...

Electromagnetic and Micro-Magnetic Non-Destructive Characterization (NDC) for Material Mechanical Property Determination and Prediction in Steel Industry and in Lifetime Extension Strategies of NPP Steel Components (2001)

Dobmann, G., Becker, R., Altpeter, I., Kern, R., Lang, M.A., Yashan, A., ...

Nondestructive characterization (NDC) of materials is a technology of increasing application by industrial users for process monitoring and control as well as in predictive maintenance procedures...

Micromagnetic Determination of Thermal-Induced Residual Stresses in Steel and White Cast Iron (2000)

Altpeter, I., Becking, R., Kern, R., Kröning, M., Hartmann, S.

Development of micromagnetic nondestructive method to estimate the thermally induced stress in multiphase magnetic system has been described in this paper. The method is based on interaction of...

Micro-Magnetic, Multiple Parameter, Microstructure and Stress Analysis (3MA) to characterise Toughness Degradatioh after Heat-treatment in JRQ-Reference Material (2000)

Dobmann, G., Kern, R.

In Europe recently a research network was established under the headline of the EURATOM programme in order to identifiy non-destructive techniques for insitu-characterisation of materials damage and...

Micro-Magnetic, Multiple-Parameter, Microstructure and Stress Analysis - 3MA - For Non-Destructive Material Properties Determination and Ageing Prediction (2000)

Dobmann, G., Kern, R.

3MA is a multiple parameter modelling of mechanical and technological material properties. It is based on multiple regression and neural network algorithms which are calibrated by non-destructively...

Electromagnetic and micro-magnetic non-destructive characterization (NDC) for material mechanical property determination and prediction in steel industry and in lifetime extension strategies of NPP steel components (2000)

Dobmann, G., Altpeter, I., Becker, R., Lang, M., Kern, R., Yashan, A., ...

Nondestructive Characterization (NDC) of materials is a technology of increasing application by industrial users for process monitoring and control as well as in predictive maintenance procedures...

Zerstörungsfreie Prüfung von randschichtgehärteten Bauteilen unter Einsatz mikromagnetischer Multiparameter-Methoden (1999)

Kern, R., Theiner, W.

The correct performance of heat treatments and machining processes is important for the functional behavoir and fatigue strength of stressed components. The only methods in use for an evaluation of...

Zerstörungsfreies Prüfen von laserstrahlgeschweißten Bauteilen (1999)

Kern, R., Theiner, W., Wohlfahrt, H.

Zur zerstörungsfreien Prüfung von Laserstrahlschweißungen wurden ein Ultraschallprüfverfahren mit horizontal polarisierten Plattenwellen, ein Mehrfrequenz-Wirbelstromverfahren und ein...

Process Integrated Nondestructive Testing (PINT) for Evaluation of Hardness, Case Depth and Grinding Defects (1999)

Theiner, W., Kern, R., Graus, M.

Up to now, techniques such as metallographic inspection, X-Ray diffraction, and hardness measurements are used for the determination of material characteristics. However, these techniques cannot be...

Nachweis von Cu-Ausscheidungen mittels mikromagnetischer Prüfverfahren (1999)

Altpeter, I., Dobmann, G., Kern, R., Kröning, M., Lang, M., Meyendorf, N., ...

Der kupferlekierte ferritische Stahl WB 36 wird in deutschen Kraftwerken in großem Umfang als Rohrleitungswerkstoff und als Behälterwerkstoff eingesetzt. In einigen Fällen kam es nach langzeitigem...

Mikromagnetische Ermittlung von thermisch induzierten Eigenspannungen in Stählen und weißem Gußeisen (1999)

Altpeter, I., Becking, R., Kern, R., Kröning, M., Hartmann, S.

Im Rahmen des DFG-Forschungsvorhabens "Mikromagnetische Ermittlung von thermisch induzierten Eigenspannungen in Stählen und weißem Gußeisen" wurde ein Prüfverfahren zur Ermittlung von thermisch...

Grundlegende Untersuchungen zur orts- und zeitaufgelösten zerstörungsfreien Bestimmung mikrostruktureller Eigenschaften (1999)

Theiner, W., Kern, R., Lejeune, I., Meyer, R.

With the help of new multi-parameter sensors, produkt characteristics are evaluated wich otherwise could only be determined so far by time-consuming and cost-intensive testing. By combining...

Grundlegende Untersuchungen von Randschichtmerkmalen beim Laserstrahlhärten mit ZfP-Multiparameteransätzen (1999)

Kern, R., Theiner, W., Bucher, B.

Surface transformation hardening of steel components using laser beams is of increasing interest but its industrial use is still limited to some applications. Because of various parameters...

Barkhausen noise measurements and related mesurements in ferromagnetic materials (1998)

Dobmann, G., Altpeter, I., Becker, R., Kern, R., Laub, U., Theiner, W.

In 1979, Matzkanin, Beissner and Teller published the NTIAC-79-2 report: the Barkhausen effect and its applications to non-destructive testing [1]. In the following years - and stimulated by the...

Elektromagnetische und Ultraschallverfahren zur Spannungsanalyse an Bauteilen (1998)

Theiner, W., Schneider, E., Kern, R.

Elektromagnetische und Ultraschallverfahren sind vergleichsweise neue zerstörungsfreie Verfahren zur Bestimmung von Eigenspannungen in Bauteilen. Ihre Anwendung ist einfach, setzt aber Vorarbeiten...

Characterization of the Microstructure of Laser-Hardened Carbon Steels by Means of Positron Lifetime Measurements and Micromagnetics (1998)

Somieski, B., Meyendorf, N., Kern, R., Krause-Rehberg, R.

Pure carbon steels containing different amounts of carbon were laser-irradiated. This hardening process, caused by martensitic transformation due to high self-quenching rates, created microdefects...

Quantitative Evaluation of Thermally Induced Residual Stresses in White Cast Iron and Steels with Different Cementite Morphologies (1997)

Altpeter, I., Kern, R., Lang, M.A.

The starting point for this work were damages in rolls of chill casting. Results of damage analysis have shown that the reason for these damages were cracks caused by thermally induced residual...

Charakterisierung der Bearbeitungszustände kleiner rotations-symmetrischer Teile mit Hilfe hochauflösender Barkhausenrausch- und Wirbelstrommessungen (1997)

Rösner, H., Altpeter, I., Meyendorf, N., Kern, R.

Zur Charakterisierung der bearbeitungsbedingten Randschicht ist die Barkhausenrauschtechnik genutzt worden, wobei zum ersten Mal in der zerstörungsfreien Prüfung die Stromdurchflutung zur Anregung...

Zerstörungsfreie Prüfung von Nitrierschichten (1996)

Altpeter, I., Detemple, I., Kern, R., Kopp, M., Huber-Gomman, U., Rühe, S.

According to DIN 50190 the depth of nitriding layers is determined destructively on samples which are added to the components to be nitrided. A nondestructive testing method is desired which monitors...

Process integrated nondestructive testing of laser-hardened components (1996)

Kern, R., Theiner, W., Valeske, B., Meyer, R.

Micromagnetic Techniques developed during the last few Years have been found to be applicable to nondestructive evaluation of the machining quality of laser hardened components. Combining information...

Process Integrated Nondestructive Testing for Evaluation of Hardness (1996)

Kröning, M., Theiner, W., Kern, R., Bucher, B., Meyer, R., Wolf, H.

With the help of new PINT sensors, product characteristics are evaluated which otherwise could only be determined so far by time-consuming and cost-intensive testing. These sensors would permit...

Hochauflösende zerstörungsfreie Ermittlung lokaler Gefüge- und Eigenspannungszustände mit Hilfe der Barkhausen-Mikroskopie (1995)

Kern, R., Altpeter, I., Blumenauer, H., Detemple, I.

Die Kenntnis lokaler Gefüge- und Eigenspannungszustände ist zur Entwicklung neuer Werkstoffe und zum Verständnis von Schädigungsprozessen von entscheidender Bedeutung. Durch ortsaufgelöste...

Zerstörungsfreie Bestimmung der Einhärtungstiefe nach dem Randschichthärten mit mikromagnetischen Prüfverfahren. Beispiel: Laserhärten (1994)

Kern, R., Theiner, W., Bergmann, H.W., Müller, D., Damaschek, R., Rudlaff, T., ...

According to DIN 50190 the hardening depth of surface hardened components is defined as the distance to surface characterized by a definite value of hardness (f.i. 550 vickers hardness HV). This...

Quantitative evaluation of machined and laserhardened surfaces by x-ray and micromagnetic techniques (1994)

Kern, R., Schneider, E., Theiner, W.

Machining of components like grinding, turning, shot peening, work hardening, diamond burnishing and power brush finishing as well as thermal treatments such as laser-, induction- and case hardening...

Evaluation of second order residual stresses in iron carbon steels and white cast iron using micromagnetic methods (1994)

Altpeter, I., Kern, R., Meyendorf, N.

The paper presents two methods for a nondestructive determination of thermally induced residual stresses in iron carbon steels and white cast iron. The magnetic Barkhausen noise is measured in the...

Evaluation of thermally induced residual stresses in white cast iron and iron-carbon steel. (1993)

Altpeter, I., Kern, R., Kröning, M.

Technical materials in general have a microscopic heterogeneous structure, i.e. they contain two or more phases with different thermally induced residual stresses. The kownledge of residual micro and...

Härtezonenüberwachung an Planetenrandbolzen (1992)

Hochheim, H., Kern, R., Theiner, W.

Pins of planetary wheels are inductive hardended in the middle part whereas two millimeters of each end must remain in a non hardened soft microstructure state. Because 180 pins/min are produced only...

Zerstörungsfreie Charakterisierung des Zähigkeitsverhaltens mit mikromagnetischen Meßgrößen (1991)

Kern, R., Theiner, W.

Will man Hinweise auf das Zähigkeitsverhalten aus zerstörungsfreien Meßgrößen ableiten, ist es sinnvoll, Größen auszuwählen, die auf zähigkeitsbestimmende Gefügeparameter sensitiv...

Residual stress- and microstructure anisotropies in laser-hardened or shot peened surface (1990)

Höller, P., Kern, R., Theiner, W.A.

Nondestructive testing of laser hardened and shot peened surfaces has been performed by magnetic Barkhausen noise measurements. Derived micromagnetic parameters such as the maximum amplitude of the...

Ansätze einer zerstörungsfreien Bestimmung von Zähigkeitskenngrößen mit mikromagnetischen Meßgrößen (1990)

Kern, R., Theiner, W.

Um die Gebrauchseigenschaften von Stählen hinsichtlich ihrer Zähigkeitseigenschaften zu beurteilen, werden genormte mechanische Versuche durchgeführt, aus denen zähigkeitsrelevante Kenngrößen...

Comparative micromagnetic and Mössbauer spectroscopic depth profile analysis of laserhardened steel X210Cr12 (1989)

Schaaf, P., Gonser, U., Kern, R., Theiner, W.A.

Nondestructive magnetic testing by magnetic Barkhausen noise and incremental permeability is applied to study the transformation of microstructure of a commercial X210Cr12 steel submitted to laser...

Characterization of cementite in steel and white cast iron by micromagnetic nondestructive methods (1989)

Altpeter, I., Höller, P., Kern, R.

The influence of different cementite contents and cementite modifications on micromagnetic measuring quantities of steels with ferritic-perlitic, martensitic annealed and martensitic soft annealed...

Quantitative hardening-depth-measurements up to 4 mm by means of micromagnetic microstructure multiparameter analysis -3MA-. (1988)

Altpeter, I., Dobmann, G., Kern, R., Theiner, W.

Induction-Laser- and Case-hardening are techniques to obtain surface microstructures with high resistance against wear and tear. The contribution refers the results of micromagnetic QND-techniques to...

Depth profile of a laser irradiated steel. (1988)

Blaes, L., Bauer, P., Gonser, U., Kern, R.

Surface Mössbauer measurements have been carried out on a commercial Ck 45 mild steel submitted to laser irradiation. The depth profile of the transformed zone was studied in connection with...

Zerstörungsfreie Qualitätsprüfung gehärteter Schichten mit einem mikromagnetischen Verfahren (1987)

Kern, R., Theiner, W.

Ziel eines mikromagnetischen Pruefverfahrens, das unter Nutzung der mikromagnetischen Messgroessen 'magnetisches Barkhausenrauschen' und 'Ueberlagerungspermeabilitaet' entwickelt wird, ist eine...

Non-destructive magnetic testing of laser hardening parameters (1987)

Kern, R., Theiner, W.

Because of the increasing commercial use of high power lasers for surface annealing treatments, non-destructive testing methods to improve the production quality and reliability are necessary....

Determination of sub-surface microstructure states by micromagnetic NDT (1987)

Altpeter, I., Kern, R., Theiner, W.

The functional behaviour of many components is determined by the intrinsic properties - residual stresses and microstructure - of sub-surface near zones. Therefore, in order to improve the static and...

Determination of surface integrities by ferromagnetic (1985)

Conrad, R., Kern, R., Theiner, W.A.

The material properties of machined and hardened surfaces influence the performance of components because residual stress and hardness distributions in the surface region are determined by machining...

ELLIPSOMETRIC STUDY OF THE CLEAVED GERMANIUM (111) SURFACE AS A FUNCTION OF TEMPERATURE (1983)

Quentel, G., Kern, R.

The ellipsometric method, relatively easy to handle, is very sensitive to any modification and perturbation which may occur on a crystalline surface. In the case of semiconductors (Ge, Si), the...

ELLIPSOMETRIC STUDY OF THE CLEAVED GERMANIUM (111) SURFACE AS A FUNCTION OF TEMPERATURE (1983)

Quentel, G., Kern, R.

The ellipsometric method, relatively easy to handle, is very sensitive to any modification and perturbation which may occur on a crystalline surface. In the case of semiconductors (Ge, Si), the...

ELLIPSOMETRIC STUDY OF THE CLEAVED GERMANIUM (111) SURFACE AS A FUNCTION OF TEMPERATURE (1983)

Quentel, G., Kern, R.

The ellipsometric method, relatively easy to handle, is very sensitive to any modification and perturbation which may occur on a crystalline surface. In the case of semiconductors (Ge, Si), the...

ÉTUDE PAR ELLIPSOMÉTRIE DE FILMS PHYSISORBÉS SUR GRAPHITE (1977)

Quentel, G., Kern, R.

L'adsorption du Xénon sur la face de base (0001) du graphite, dans le domaine de la monocouche atomique et plus (cinq) est étudiée par Ellipsométrie et les résultats sont comparés à ceux...

L'ORDRE DE RÉACTION ZÉRO DANS LA CINÉTIQUE DE DÉSORPTION ISOTHERME (ITDS) DES PHASES 2 D CONDENSÉES (1977)

Kern, R., Le Lay, G.

Des expériences de spectroscopie de désorption isotherme (ITDS : isothermal desorption spectroscopy) à l'aide d'un spectromètre Auger ont été réalisées sur les trois systèmes : Xe/(0001)...

ÉTUDE PAR ELLIPSOMÉTRIE DE FILMS PHYSISORBÉS SUR GRAPHITE (1977)

Quentel, G., Kern, R.

L'adsorption du Xénon sur la face de base (0001) du graphite, dans le domaine de la monocouche atomique et plus (cinq) est étudiée par Ellipsométrie et les résultats sont comparés à ceux...

L'ORDRE DE RÉACTION ZÉRO DANS LA CINÉTIQUE DE DÉSORPTION ISOTHERME (ITDS) DES PHASES 2 D CONDENSÉES (1977)

Kern, R., Le Lay, G.

Des expériences de spectroscopie de désorption isotherme (ITDS : isothermal desorption spectroscopy) à l'aide d'un spectromètre Auger ont été réalisées sur les trois systèmes : Xe/(0001)...

ÉTUDE PAR ELLIPSOMÉTRIE DE FILMS PHYSISORBÉS SUR GRAPHITE (1977)

Quentel, G., Kern, R.

L'adsorption du Xénon sur la face de base (0001) du graphite, dans le domaine de la monocouche atomique et plus (cinq) est étudiée par Ellipsométrie et les résultats sont comparés à ceux...

L'ORDRE DE RÉACTION ZÉRO DANS LA CINÉTIQUE DE DÉSORPTION ISOTHERME (ITDS) DES PHASES 2 D CONDENSÉES (1977)

Kern, R., Le Lay, G.

Des expériences de spectroscopie de désorption isotherme (ITDS : isothermal desorption spectroscopy) à l'aide d'un spectromètre Auger ont été réalisées sur les trois systèmes : Xe/(0001)...

Iodin and Calcium Hypochlorite in Abnormal Discoloration of the Teeth. (1910)

Kern, R.

Editors: Aug. 1859-July 1865, J. D. White, J. H. McQuillen, G. J. Ziegler.--Aug. 1865-Dec. 1871, J. H. McQuillen, G. J. Ziegler.--Jan. 1872-May 1891, J. W. White.--July 1891-Apr. 1930, E. C. Kirk...

The cucumber long hypocotyl mutant lacks a light-stable PHYB-like phytochrome.

López-Juez, E, Nagatani, A, Tomizawa, K, Deak, M, Kern, R, Kendrick, R E, ...

A novel cDNA sequence homologous to a phytochrome B (phyB) gene that was isolated in a library from tobacco tissue has been used in an Escherichia coli expression system to raise anti-phytochrome B...

Purification and characterization of a low-molecular-weight membrane protein with affinity for the Escherichia coli origin of replication.

Jacq, A, Kern, R, Tsugita, A, Kohiyama, M

A purification procedure was devised for a low-molecular-mass (about 10-kilodalton) membrane protein from Escherichia coli that was shown to bind specifically to the chromosomal replication origin...

Inhibition of DNA synthesis at the hemimethylated pBR322 origin of replication by a cell membrane fraction.

Malki, A, Kern, R, Kohiyama, M, Hughes, P

The replication of both ColE1-type plasmids and plasmids bearing the origin of replication of the Escherichia coli chromosome (oriC) has been shown to be inhibited by hemimethylation of adenine...

Parental strand recognition of the DNA replication origin by the outer membrane in Escherichia coli.

Herrick, J, Kern, R, Guha, S, Landoulsi, A, Fayet, O, Malki, A, ...

The outer membrane of Escherichia coli binds the origin of DNA replication (oriC) only when it is hemimethylated. We report here the results of a footprinting analysis with the outer membrane which...

Calcium-sodium antagonism on the frog's heart: a voltage-clamp study.

Benninger, C, Einwächter, H M, Haas, H G, Kern, R

1. In double sucrose-gap voltage-clamped frog atrial fibres the influence of [Ca]o and [Na]o on membrane current and contraction was investigated. 2. The slow (secondary) inward current varied with...

Membrane current and contraction in frog atrial fibres

Einwächter, H. M., Haas, H. G., Kern, R.

1. Membrane current and mechanical activity were recorded from short segments of frog atrial muscle strips using a double sucrose gap voltage clamp arrangement. Experiments were performed at 4-7° C....

The cucumber long hypocotyl mutant lacks a light-stable PHYB-like phytochrome.

López-Juez, E, Nagatani, A, Tomizawa, K, Deak, M, Kern, R, Kendrick, R E, ...

A novel cDNA sequence homologous to a phytochrome B (phyB) gene that was isolated in a library from tobacco tissue has been used in an Escherichia coli expression system to raise anti-phytochrome B...

Purification and characterization of a low-molecular-weight membrane protein with affinity for the Escherichia coli origin of replication.

Jacq, A, Kern, R, Tsugita, A, Kohiyama, M

A purification procedure was devised for a low-molecular-mass (about 10-kilodalton) membrane protein from Escherichia coli that was shown to bind specifically to the chromosomal replication origin...

Inhibition of DNA synthesis at the hemimethylated pBR322 origin of replication by a cell membrane fraction.

Malki, A, Kern, R, Kohiyama, M, Hughes, P

The replication of both ColE1-type plasmids and plasmids bearing the origin of replication of the Escherichia coli chromosome (oriC) has been shown to be inhibited by hemimethylation of adenine...

Parental strand recognition of the DNA replication origin by the outer membrane in Escherichia coli.

Herrick, J, Kern, R, Guha, S, Landoulsi, A, Fayet, O, Malki, A, ...

The outer membrane of Escherichia coli binds the origin of DNA replication (oriC) only when it is hemimethylated. We report here the results of a footprinting analysis with the outer membrane which...

Calcium-sodium antagonism on the frog's heart: a voltage-clamp study.

Benninger, C, Einwächter, H M, Haas, H G, Kern, R

1. In double sucrose-gap voltage-clamped frog atrial fibres the influence of [Ca]o and [Na]o on membrane current and contraction was investigated. 2. The slow (secondary) inward current varied with...

Membrane current and contraction in frog atrial fibres

Einwächter, H. M., Haas, H. G., Kern, R.

1. Membrane current and mechanical activity were recorded from short segments of frog atrial muscle strips using a double sucrose gap voltage clamp arrangement. Experiments were performed at 4-7° C....