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2 results on '"Marc Keppler"'

1. Fatal Human Meningoencephalitis due to Halicephalobus Nematodes, Germany

Author

Birgit Muntau, Dennis Tappe, Hans Konrad Müller-Hermelink, Marc Keppler, Camelia-Maria Monoranu, Wolfgang Müllges, Klaus Brehm, Sarah L. Ondrejka, and Egbert Tannich

Subjects
Pathology, medicine.medical_specialty, nematode, law.invention, Serology, law, Medicine, Helminths, Polymerase chain reaction, horses, Halicephalobus, biology, business.industry, Meningoencephalitis, meningoencephalitis, medicine.disease, biology.organism_classification, Post mortem brain, Infectious Diseases, Nematode, PCR, Oncology, Immunology, Brief Reports, business
Abstract

Infections with Halicephalobus nematodes, causative agents of severe meningoencephalitis in horses, have rarely been reported in humans. In this study, the clinical, serological, cytokine, and histopathological findings of a rapidly progressive and eventually fatal meningoencephalitis in a previously healthy human are described. The helminth was finally diagnosed by specific polymerase chain reactions from post mortem tissue.

Published
2015

2. A 2.2A, 4 MHz Switch-Mode Battery Charger for a Cellular Power Management Unit

Author

Kerry Thompson, Marc Keppler, Scott Savage, Vipul Katyal, Russ Radke, Jay Edward Ackerman, Michael Owen Baker, Mark Rutherford, Ryan Michael Desrosiers, and John McNitt

Subjects
Battery (electricity), Battery charger, Mode (computer interface), Computer science, Mobile phone, business.industry, Electrical engineering, Electronic engineering, Key (cryptography), Constant current, Circuit architecture, Power Management Unit, business
Abstract

Battery chargers are a necessary part of any mobile electronic device. Because a mobile phone battery is a high-energy storage unit, care must be taken in the design of the entire charging system. This paper discusses the overall charging system for a mobile phone as well as some key factors that make battery chargers unique. The design of a switch-mode battery charger is presented, including subsystem circuit architecture, stability analysis, and sequencing logic, plus the key performance parameters of the design are summarized.

Published
2013
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