We construct the set of all general (i.e. not necessarily rank 1) symmetric informationally complete (SIC) positive operator valued measures (POVMs), and thereby show that SIC-POVMs that are not necessarily rank 1 exist in any finite dimension d. In particular, we show that any orthonormal basis of a real vector space of dimension d 2 − 1 corresponds to some general SIC POVM and vice versa. Our...

Ceramic matrix composites (CMC’s), particularly silicon carbide (SiC) fiber-reinforced SiC-matrix (SiC/SiC) composites, have been studied for advanced nuclear energy applications for more than a decade. The perceived potentials for advanced SiC/SiC composites include the ability to operate at temperature regimes much higher than heat-resistant alloys, the inherent low inducedactivation nuclear ...

Silicon Carbide (SiC) is believed to be a revolutionary semiconductor material for power devices of the future; many SiC power devices have emerged as superior alternative power switch technology, especially in harsh environments with high temperature or high electric field. In this chapter, the challenges and recent develop‐ ments of SiC power devices are discussed. The first part is focused o...

A carbon nanotube-enhanced SiC (CNT-SiC) coating was deposited on C/C composites to improve the oxidation resistance of C/C. The CNT-SiC coating was prepared by direct growth of CNTs on C/C surface at 700oC followed by deposition of SiC using chemical vapor deposition at 1150oC for 1 hour. SiC was deposited on the CNTs as well as the interface between CNTs and C/C, making CNTs strongly rooted o...

STUDY OBJECTIVES To document the current practice of occupational asthma (OA) diagnosis and use of specific inhalation challenge (SIC). DESIGN, SETTING, AND PARTICIPANTS A survey evaluating the current practice of SIC was mailed to 259 residency training programs in adult pulmonary diseases, allergy and immunology, and occupational medicine accredited in the United States and Canada during th...

Streptococcal inhibitor of complement (SIC) is a highly polymorphic extracellular protein and putative virulence factor secreted by M1 and M57 strains of group A Streptococcus (GAS). The sic gene is highly upregulated in invasive M1T1 GAS isolates following selection of mutations in the covR/S regulatory locus in vivo. Previous work has shown that SIC (allelic form 1.01) binds to and inactivate...