Cylindrical lens array (CLA) and plasmonic nano-grating structures were integrated with a large area interdigitated photoconductive antenna (PCA) for high-efficiency terahertz (THz) emitter applications. The peak-to-peak amplitude of THz radiation pulse from the CLA-integrated PCA was enhanced 5.5 times compared that conventional without CLA. highly localized electric field near nanoscale grati...

Background LGE-MRI is widely used to assess cardiac RF ablation lesions. However, LGE-MRI requires contrast injection and the appearance, dimensions and visibility of lesions in LGE-MRI noticeably change with time after ablation and time after contrast injection. Recently proposed non-contrast T1-weighted (T1w) technique is only applicable to visualize acute (< 3 days) RF lesions. The main goal...

In recent years, the effectiveness of anti-TNF therapy in treating rheumatoid arthritis (RA) has become apparent. While trials of IL-1 receptor antagonist in RA have been encouraging, it clearly is more difficult to target two molecules (IL-1 alpha and beta) than one (TNF-alpha). In his review article, Professor Wim van den Berg argues that both TNF-alpha and IL-1 must be blocked in RA and that...

Classicist. A casualty of the minimalist creed, Contreras quit making art in 1972 when he’d reduced his image to a dot. He began again in 1997. USC Fisher Gallery, Harris Hall. Hours: Tuesday through Saturday, noon to 5 p.m. Free. 213-740-4561

Recent developments in photo-detectors and photo-detector systems are reviewed. The main emphasis is made on Silicon Photo-Multipliers (SiPM) novel and very attractive photo-detectors. Their main features are described. Properties of detectors manufactured by different producers are compared. Different applications are discussed including calorimeters, muon detection, tracking, Cherenkov light ...

The first Micro Gallery opened at the National Gallery in London on July 21st 1991. The first facility of its kind, it provided visitors with a comprehensive multimedia reference to the Gallery's collection. Since then the author and his colleagues have had the privilege of working on two further projects of a similar nature. The Image Gallery at the San Diego Museum of Art opened on October 26...

We present a measurement of the rate of gluon splitting into bottom quarks, g → bb̄, in hadronic Z decays collected by SLD from 1996 to 1998. The analysis was performed by looking for secondary bottom production in 4-jet events of any primary flavor. A topological vertex mass technique was used to tag the two jets with the smallest angle between them as b/b̄. We obtained a rate of g → bb̄ per hadr...

We consider combinatorial problems motivated by sensor networks for beacon-based point-to-point routing and covering. A beacon b is a point that can be activated to effect a ‘magnetic pull’ toward itself everywhere in a polygonal domain P . The routing problem asks how many beacons are required to route between any pair of points in a polygonal domain P . In simple polygons with n vertices we s...