Fluorescent microspheres were easily fabricated from aqueous CdTe nanocrystals (NCs). The NCs, which had negative charges on the surface, were first extracted to chloroform by cationic surfactant octadecyl-p-vinyl-benzyldimethylammonium chloride (OVDAC) and then swollen into performed polystyrene (PS) microspheres. Through this method, strong photoluminescence (PL) of aqueous NCs was inherited ...

Germinating quickly, growing fast, withstanding competitors and defending against herbivores already since decades, ecologists have suggested that these are important characteristics of successful plants. However, it has also been suggested that species characteristics are less important as determinants of plant establishment success than other factors such as seed availability or environmental...

Tapping mode atomic force microscopy (AFM) in solution was used to analyze the role of the internally located periplasmic flagella (PFs) of the Lyme disease spirochete Borrelia burgdorferi in withstanding externally applied cellular stresses. By systematically imaging immobilized spirochetes with increasing tapping forces, we found that mutants that lack PFs are more readily compressed and dama...

A new thin film heat flux array (HFA) was designed and constructed using a series of nickel/copper thermocouples deposited onto a thin Kapton® polyimide film. The HFA is capable of withstanding temperatures up to 300°C and produces signals of 40 μV/(W/cm). As a result of its thin film construction, the HFA is able to resolve heat flux signals as fast as 32 ms. Calibrations were completed to det...

2014 The present paper discusses an experiment, using a Middleton sputter ion source, where a sensitive search was made for 14Nions in the presence of an intense carbon beam. It was found that negative nitrogen ions, capable of withstanding acceleration fields of 1.5 MV/m, were not produced in detectable intensities. The paper also points out some design requirements of tandem facilities that m...

Current elevator landing door safety retainers are able to prevent fall accidents from an inadvertent bump against the door, as they designed endure a kinetic energy of 450 J. However, recent increase in among people electric wheelchairs indicates that required sustain stronger external shocks doors. The purpose this study is develop capable enduring 1,000 J at doors elevators. In study, crash ...

Elastin, a principal structural component of native arteries, has distinct biological and mechanical advantages when used as a biomaterial; however, its low ultimate tensile strength has limited its use as an arterial conduit. We have developed a scaffold, consisting of a purified elastin tubular conduit strengthened with fibrin bonded layers of acellular small intestinal submucosa (aSIS) for p...