Search

Your search keyword '"Kyba, Christopher C.M."' showing total 22 results
Start Over Author "Kyba, Christopher C.M."
22 results on '"Kyba, Christopher C.M."'

12. Large-scale sampling of the freshwater microbiome suggests pollution-driven ecosystem changes

Author

Premke, Katrin, primary, Wurzbacher, Christian, additional, Felsmann, Katja, additional, Fabian, Jenny, additional, Taube, Robert, additional, Bodmer, Pascal, additional, Attermeyer, Katrin, additional, Nitzsche, Kai Nils, additional, Schroer, Sibylle, additional, Koschorreck, Matthias, additional, Hübner, Eric, additional, Mahmoudinejad, Termeh Hesam, additional, Kyba, Christopher C.M., additional, Monaghan, Michael T., additional, and Hölker, Franz, additional

Published
2022
Full Text
View/download PDF

15. Coral Gametogenesis Collapse under Artificial Light Pollution

Author

Ayalon, Inbal, primary, Rosenberg, Yaeli, additional, Benichou, Jennifer I.C., additional, Campos, Celine Luisa D., additional, Sayco, Sherry Lyn G., additional, Nada, Michael Angelou L., additional, Baquiran, Jake Ivan P., additional, Ligson, Charlon A., additional, Avisar, Dror, additional, Conaco, Cecilia, additional, Kuechly, Helga U., additional, Kyba, Christopher C.M., additional, Cabaitan, Patrick C., additional, and Levy, Oren, additional

Published
2021
Full Text
View/download PDF

16. Energy and timing response of six prototype scintillators for TOF-PET

Author

Kyba, Christopher C.M., Glodo, Jarek, van Loef, Edgar V.D., Karp, Joel S., and Shah, Kanai S.

Subjects
Crystals -- Properties, Crystals -- Composition, PET imaging -- Equipment and supplies, Business, Electronics, Electronics and electrical industries
Abstract

The recent development of fast scintillating crystals with high light output (such as La[Br3.sub.3], LYSO, and LSO) has made it possible to incorporate time-of-flight information into whole-body positron emission tomography scanners (TOF-PET). The development of fast scintillators has continued, and scintillators such as Ce[Br.sub.3] and the six crystals we report on here are candidates for future TOF-PET scanners. We have performed preliminary tests on six prototype scintillating crystals composed of [YI.sub.3] (2% Ce), (Lu,Gd)[I.sub.3] (2% Ce), Lu[I.sub.3] (10% Ce), Lu[I.sub.3] (5% Ce), [LuI.sub.3] (2% Ce), and Ce[(Br, Cl).sub.3]. The crystals were coupled to a PMT to observe 511 keV photons produced by positron captures in a [sup.22]Na point source. A La[Br3.sub.3] coincidence detector was used in order to make timing resolution measurements. The prototype samples had a range of timing resolutions from 160 ps to 250 ps (FWHM). Ce[(Br,Cl).sub.3] was found to have the best timing resolution, with 160 ps, followed by Lu[I.sub.3] (2% Ce) with 180 ps. These results are competitive with the 160 ps we observed for a pair of La[Br3.sub.3] crystals in coincidence with each other. The 2% Ce doped Lu[I.sub.3] sample was found to have the best overall energy response, with an energy resolution (FWHM) of 6% at 511 keV. Energy resolution and light yield measurements are presented for each of the crystals. Index Terms--Halides, Lu[I.sub.3], positron emission tomography, scintillation, time-of-flight.

Published
2008

18. Night Matters—Why the Interdisciplinary Field of “Night Studies” Is Needed

Author

Kyba, Christopher C.M., primary, Pritchard, Sara B., additional, Ekirch, A. Roger, additional, Eldridge, Adam, additional, Jechow, Andreas, additional, Preiser, Christine, additional, Kunz, Dieter, additional, Henckel, Dietrich, additional, Hölker, Franz, additional, Barentine, John, additional, Berge, Jørgen, additional, Meier, Josiane, additional, Gwiazdzinski, Luc, additional, Spitschan, Manuel, additional, Milan, Mirik, additional, Bach, Susanne, additional, Schroer, Sibylle, additional, and Straw, Will, additional

Published
2020
Full Text
View/download PDF

19. Night Matters – Why the Interdisciplinary Field of “Night Studies” is Needed

Author

Kyba, Christopher C.M., primary, Pritchard, Sara B., additional, Ekirch, A. Roger, additional, Eldridge, Adam, additional, Jechow, Andreas, additional, Preiser, Christine, additional, Kunz, Dieter, additional, Henckel, Dietrich, additional, Hölker, Franz, additional, Barentine, John, additional, Berge, Jørgen, additional, Meier, Josiane, additional, Gwiazdzinski, Luc, additional, Spitschan, Manuel, additional, Milan, Mirik, additional, Bach, Susanne, additional, Schroer, Sibylle, additional, and Straw, Will, additional

Published
2019
Full Text
View/download PDF

20. Citizen Science : gemeinsam Wissen schaffen

Author

Dransch, Doris, Kyba, Christopher C.M., Schröter, Kai, Yang, Bin, Schorlemmer, Danijel, Barz, Björn, and Denzler, Joachim

Subjects
Mathematics::Combinatorics, Computer Science::Discrete Mathematics, Computer Science::Social and Information Networks
Abstract

System Erde; 8, Involving citizens into science has long tradition; examples are bird watching or weather observation. Digital technologies foster citizen science by providing easy to use apps via the Internet serving specific scientific tasks. At GFZ we develop and test approaches to receive data provided by citizens for various scientific applications: Examples are the quantification of light pollution during the night, and the assessment of damages to buildings caused by flood. Data provided by citizens should complement scientific data collected by sensors and thus overcome shortcomings sensors have. In the case of quantifying light pollution an app allows participants to use their visual system as a sensor to measure the brightness of the sky. The app directs participants to find a particular star in the sky, and then report whether it is visible or not. To assess flood damage we develop a system that filters relevant images from the huge amount of information available in social media and to extract suitable information such as inundation depth and area or water pollution. It also supports scientists to judge reliability and usefulness of the information derived from social media. In several studies we already could show the scientific value of data provided by citizens.

Published
2018

Catalog

Books, media, physical & digital resources
See catalog results