Search Results - "Medenwaldt, R"

Dark field X-ray microscopy: the effects of condenser/detector aperture by Vogt, S., Chapman, H.N., Jacobsen, C., Medenwaldt, R.

“…In order to visualize the functionality of a biological cell, it is often desirable to label specific proteins. In this work we concentrate on the optical…”
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Channeling of high-energy particles in bent crystals – Experiments at the CERN SPS by Baurichter, A., Biino, C., Clément, M., Doble, N., Elsener, K., Fidecaro, G., Freund, A., Gatignon, L., Grafström, P., Gyr, M., Hage-Ali, M., Herr, W., Keppler, P., Kirsebom, K., Klem, J., Major, J., Medenwaldt, R., Mikkelsen, U., Møller, S.P., Siffert, P., Uggerhøj, E., Vilakazi, Z.Z., Weisse, E.

“…During the latest decade, experiments have been performed at the CERN SPS to investigate the use of high-energy channeled nuclei in bent crystals for…”
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Radiation Emission and Its Influence on the Motion of Multi-GeV Electrons and Positrons in Strong Crystalline Fields by Baurichter, A., Kirsebom, K., Kononets, Yu. V., Medenwaldt, R., Mikkelsen, U., Møller, S. P., Uggerhøj, E., Worm, T., Elsener, K., Ballestrero, S., Sona, P., Romano, J., Connell, S. H., Sellschop, J. P. F., Avakian, R. O., Avetisian, A. E., Taroian, S. P.

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Effect of Cooling on the Motility and Function of Human Spermatozoa by Chantler, E., Abraham-Peskir, J.V., Little, S., McCann, C., Medenwaldt, R.

“…Human spermatozoa were cooled from 37 to 0°C at 10°C min−1 in 5°C steps with 1 min equilibration at each step, the temperature control was ± 0.1°C. Spermatozoa…”
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Measurement of pair-production by high energy photons in an aligned tungsten crystal by Moore, R., Parker, M.A., Baurichter, A., Kirsebom, K., Medenwaldt, R., Mikkelsen, U., Møller, S.P., Uggerhøj, E., Worm, T., Doble, N., Elsener, K., Ballestrero, S., Sona, P., Strakhovenko, V.M., Biino, C., Vilakazi, Z.Z.

“…A new measurement has been made of the rate of pair-production in a 3.2 mm thick tungsten crystal, exposed to photons with energies in the range 10 to 150 GeV,…”
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New results from the CERN-SPS beam deflection experiments with bent crystals by Baurichter, A., Kirsebom, K., Medenwaldt, R., Møller, S.P., Worm, T., Uggerhøj, E., Biino, C., Clément, M., Doble, N., Elsener, K., Gatignon, L., Grafström, P., Mikkelsen, U., Freund, A., Vilakazi, Z., Siffert, P., Hage-Ali, M.

“…Results from five distinct bending experiments performed recently in the H8 beam at CERN are presented. Firstly, deflection of a positive pion beam at 200…”
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Enhanced electromagnetic showers initiated by 20–180 GeV gamma rays on aligned thick germanium crystals by Baurichter, A., Kirsebom, K., Medenwaldt, R., Mikkelsen, U., Møller, S.P., Uggerhøj, E., Worm, T., Kononets, Y.V., Elsener, K., Ballestrero, S., Sona, P., Biino, C., Connell, S.H., Sellschop, J.P.F., Vilakazi, Z.Z., Apyan, A., Avakian, R.O., Ispirian, K.A., Taroian, S.P.

“…The distribution of the energy released in a silicon detector placed on the downstream side of thick germanium single crystals bombarded by 20–180 GeV gamma…”
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Experimental investigation of photon multiplicity and radiation cooling for 150 GeV electrons/positrons traversing diamond and Si crystals by Kirsebom, K., Medenwaldt, R., Mikkelsen, U., Møller, S.P., Paludan, K., Uggerhøj, E., Worm, T., Elsener, K., Ballestrero, S., Sona, P., Romano, J., Connell, S.H., Sellschop, J.P.F., Avakian, R.O., Avetisian, A.E., Taroian, S.P.

“…Detailed experimental investigations of photon multiplicities for 150 GeV electrons/positrons traversing thin diamond and Si crystals have been performed…”
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Enhancement of electromagnetic showers initiated by ultrarelativistic electrons in aligned thick germanium crystals by Baurichter, A., Mikkelsen, U., Kirsebom, K., Medenwaldt, R., Møller, S., Uggerhøj, E., Worm, T., Elsener, K., Ballestrero, S., Sona, P., Romano, J., Biino, C., Moore, R., Vilakazi, Z.Z.

“…The distribution of the energy deposited in thin silicon detectors placed on the downstream side of a thick germanium single crystal bombarded with a 70, 150…”
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Coherent radiation from 70 GeV and 150 GeV electrons and positrons traversing diamond and Si crystals near axial and planar directions by Medenwaldt, R., Møller, S.P., Uggerhøj, E., Worm, T., Elsener, K., Sona, P., Connell, S.H., Sellschop, J.P.F., Avakian, R.O., Avetisian, A.E., Taroian, S.P.

“…Channeling radiation and energy loss for 150 GeV electrons and positrons incident on a 0.5 mm thick 〈100〉 diamond and a 0.6 mm thick 〈110〉 Si crystal have been…”
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Hard-photon emission from 150-GeV electrons incident on Si and Ge single crystals near axial directions by Medenwaldt, R, Moller, SP, Sorensen, AH, Tang-Petersen, S, Uggerhoj, E, Elsener, K, Hage-Ali, M, Siffert, P, Stoquert, J, Maier, K

“…The emission of high-energy photons from 150-GeV electrons traversing single crystals near axial directions is studied experimentally for Ge and Si…”
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Conditions and rates of biotic and abiotic iron precipitation in selected Danish freshwater plants and microscopic analysis of precipitate morphology by Søgaard, Erik G., Medenwaldt, Robin, Abraham-Peskir, Joanna V.

“…This study compares the biotic precipitation of iron in the sand filters of a new freshwater plant, Astrup, with the abiotic precipitation of iron in the sand…”
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Low‐distortion electron‐beam lithography for fabrication of high‐resolution germanium and tantalum zone plates by David, C., Kaulich, B., Medenwaldt, R., Hettwer, M., Fay, N., Diehl, M., Thieme, J., Schmahl, G.

“…In this work, an e‐beam tool consisting of a commercial pattern generator and a scanning electron microscope is used for the fabrication of high‐resolution…”
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Conditions and rates of biotic and abiotic iron precipitation in selected Danish freshwater plants and microscope analysis of precipitate morphology by Soegaard, E G, Medenwaldt, R, Abraham-Peskir, J V

“…This study compares the biotic precipitation of iron in the sand filters of a new freshwater plant, Astrup, with the abiotic precipitation of iron in the sand…”
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X-ray microscopy of human spermatozoa shows change of mitochondrial morphology after capacitation by Vorup-Jensen, Thomas, Hjort, Tage, Abraham-Peskir, Joanna V., Guttmann, Peter, Jensenius, Jens C., Uggerhøj, Erik, Medenwaldt, Robin

“…Using X-ray microscopy two morphologically distinct states were observed of the human spermatozoan mitochondria: (i) compact and tightly wrapped around the…”
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Al(3+) and Zn(2+)-induced structural changes and localization in a fully-hydrated live eukaryotic cellular model by Wendt-Larsen, J, Abraham-Peskir, J V, Medenwaldt, R

“…This study combined techniques that did not require preparation protocols that were potentially harmful to the cell, making it possible to investigate cells…”
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Outstanding contribution. X-ray microscopy of human spermatozoa shows change of mitochondrial morphology after capacitation by Vorup-Jensen, T, Hjort, T, Abraham-Peskir, J V, Guttmann, P, Jensenius, J C, Uggerhoj, E, Medenwaldt, R

“…Using X-ray microscopy two morphologically distinct states were observed of the human spermatozoan mitochondria: (i) compact and tightly wrapped around the…”
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Al3+AND Zn2+-INDUCED STRUCTURAL CHANGES AND LOCALIZATION IN A FULLY-HYDRATED LIVE EUKARYOTIC CELLULAR MODEL by Wendt-Larsen, Jette, Abraham-Peskir, Joanna V., Medenwaldt, Robin

“…This study combined techniques that did not require preparation protocols that were potentially harmful to the cell, making it possible to investigate cells…”
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A new technique of examining pollen-connecting threads by Abraham-Peskir, Joanna V., Searle, Rosalind, Medenwaldt, Robin

“…A new technique of obtaining high resolution structural information on pollen-connecting threads is outlined. The method employs a transmission X-ray…”
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Hard-proton emission from 150-GeV electrons incident on Si and Ge single crystals near axial directions by MEDENWALDT, R, MØLLER, S. P, SØRENSEN, A. H, TANG-PETERSEN, S, UGGERHØJ, E, ELSENER, K, HAGE-ALI, M, SIFFERT, P, STOQUERT, J, MAIER, K

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