A new miniature Wright peak-flow meter has been designed and produced. The meter is tubular with a spring-loaded piston and a longitudinal slot through which air escapes. Its dynamic characteristics have been carefully designed to make it respond only to peak flow and not to rate of rise. Performance tests on early instruments showed fairly close correlation with the Wright peak-flow meter but ...

We validate specific binding activity of a fluorescence-labeled peptide to colorectal dysplasia in living mice using a miniature, flexible, fiber microendoscope that passes through the instrument channel of an endoscope. The microendoscope delivers excitation light at 473 nm through a fiber-optic bundle with outer diameter of 680 µm to collect en face images at 10 Hz with 4 µm lateral resolutio...

We report on the design, characterization, and performance of a near-field scanning thermal microscope capable to detect thermal heat currents mediated by evanescent thermal electromagnetic fields close to the surface of a sample. The instrument operates in ultrahigh vacuum and retains its scanning tunneling microscope functionality, so that its miniature, micropipette-based thermocouple sensor...

Introduction: This paper describes the progress in the development and application of the AEXS instrument to determine elemental abundance by analysis of the excired XRF spectra. The AEXS is a miniature instrument based on the excitation of characteristic X-Ray Fluorescence (XRF) spectra from samples in ambient atmosphere using a focused electron beam. Operation in ambient atmospheres with mode...

Optical tracking systems are widely adopted in surgical navigation. An optical tracking system is designed based on the principle of stereo vision with high-precision and low cost. This system uses optical infrared LEDs that are installed on the surgical instrument as markers and a near-infrared filter is added in front of the Bumblebee2 stereo camera lens to eliminate the interference of ambie...

Since the introduction of the indirect ophthalmoscope by Schepens (I947), the field of ophthalmology has witnessed an increasing sophistication in the instrument (Hovland, Elzeneiny, and Schepens, I969; Weaver, I 970). The recently introduced miniature indirect binocular ophthalmoscope of Schultz and Crock (Crock, Galbraith, and Parel, I969) offers a lightweight spectacle-frame instrument with ...

rhizoctonia-like fungi were isolated from the infected roots of miniature rose (rosa hybrida cv. linda) plant with chlorosis and necrosis symptoms, grown in commercial glasshouse in rafsanjan, iran, during the autumn of 2011. all of the isolates were identified as binucleate rhizoctonia sp. on the basis of hyphal characteristics and nuclei number. they were tested for detection of the anastomos...

Objective: The use of miniature X-ray source in electronic brachytherapy is on the rise so there is an urgent need to acquire more knowledge on X-ray spectrum production and distribution by a dose. The aim of this research was to investigate the influence of target thickness and geometry at the source of miniature X-ray tube on tube output.Method: Five sources were simulated based on problems e...

seven caspian miniature horses, aged above two years, were used for this study. the skeleton of these horses were cleaned and prepared using appropriate techniques. the vertebral column was studied and photographed. the vertebral column in one of these horses showed variations in thoracic, lumbar and sacral region. the vertebral formola was c7, t19,l5,s6 and a pair of 19th rib was fused with th...

An optical instrument for measuring the thickness of a thin gap or transparent lm is presented. It will be used to calibrate the adaptive secondary mirror under development for the Steward Observatory 6.5 m Multiple Mirror Telescope. Capacitive sensors in the mirror assembly measure dynamically the thickness of the nominally 50 m air gap between the deformable mirror and a glass reference body....