Sensitive Characterization of the Graphene Transferred onto Varied Si Wafer Surfaces via Terahertz Emission Spectroscopy and Microscopy (TES/LTEM).

Graphene shows great potential in developing the next generation of electronic devices. However, the real implementation of graphene-based electronic devices needs to be compatible with existing silicon-based nanofabrication processes. Characterizing the properties of the graphene/silicon interface rapidly and non-invasively is crucial for this endeavor.

Repeated findings of unidentified small Isospora-like coccidia in faecal specimens from travellers returning to The Netherlands.

Findings are described of small (8-10 microns) coccidian oocysts in the stools of 9 patients presenting with diarrhoea, all of whom with a history of travelling in South Asia and/or South America in the years 1986 and 1987. There was no indication of immunodeficiency. These oocysts, which were immature in freshly excreted stools, could be induced to sporulate into a two-sporocysts stage and are now recognized as Cyclospora spec.

In vitro excystation and subsequent axenic growth of Giardia lamblia.

Six fresh Giardia lamblia strains were isolated by in vitro excystation and subsequent culturing of excysted parasites in bile-supplemented BI-S-33 medium. The cysts passed in faeces appeared to differ in structure when observed using differential interference contrast microscopy. Sometimes the enclosed organisms were closely applied to the cyst wall; in most stool specimens, however, the parasites were separated from the cyst wall by a space.