A method to perform nano-beam diffraction (NBD) in a transmission electron microscope with high spatial resolution and low convergence angle is proposed. It is based on the use of a properly fabricated condenser aperture of 1 micron in diameter, which allows an electron beam about 10 nm in size to be focused on the sample, with a convergence angle in the 0.1 mrad range. Examples of NBD patterns...

Abstract Microfading testing allows to evaluate the sensitivity light of a specific artwork. Characterization illumination spot is important determine its shape, dimensions, distribution, and intensity in order limit account for possible damage. In this research advantages disadvantages several methods used beam shape profiles are described with aim providing various options microfading researc...

A system determining the rate of oxygen release from erythrocytes flowing in single microvessels was constructed with an inverted microscope by connecting 1) a scanning/grating spectrophotometer equipped with a photon-counting detector through a thin light guide, to obtain the visible absorption spectrum of a spot (5 microns in diameter) focused on a microvessel, 2) two photomultipliers (connec...

Alternative methods for dissimilar metal joining particularly aluminium and copper have gain interest in manufacturing sectors. Friction stir spot welding was carried out on the AA6061 C11000 wires of 2 mm diameter. This research paper reported results microstructures mechanical properties spot-welded joints, also special attention is provided electrical resistivity welds. The reveal informatio...

Background & Aims: Acinetobacter baumannii is a gram-negative pathogen that causes a wide range of hospital-acquired infections. Due to its intrinsic traits and its remarkable abilities to quickly acquire resistance genes, it has become resistant to most antimicrobial agents and a major problem for hospitals. In recent years, application of lytic bacteriophages has been considered to eradicate ...

A rough picture is beginning to emerge of the physics behind the maximum gradient that can be sustained in an accelerating structure without producing surface damage at a level sufficient to cause a measurable change in the rf properties of the structure. Field emission sites are known to trigger the formation of so-called plasma spots in regions of high dc or rf surface electric fields. A sing...

Acoustic behavior of lipid-coated microbubbles has been widely studied, which has led to several numerical microbubble dynamics models that incorporate lipid coating behavior, such as buckling and rupture. In this study we investigated the relationship between microbubble acoustic and lipid coating behavior on a nanosecond scale by using fluorescently labeled lipids. It is hypothesized that a l...

The causative agent of the Indo-Pacific coral disease, Porites ulcerative white spot syndrome (PUWS), that affects Porites spp. and a few other coral genera has so far remained unidentified. Inoculation of thiosulphate citrate bile sucrose (TCBS) agar with tissue material from Porites cylindrica infected with white spot produced colonies of approximately 3 mm diameter consisting of Gram-negativ...

Is there a significant difference between modelled and observed amplification of surface trends in the tropical troposphere