A sampling hadronic calorimeter with gaps instrumented with thin MICROMEGAS chambers of small pad size and single bit readout is a candidate for an experiment at a future linear collider. Several MICROMEGAS chambers with 1 cm2 anode pads were fabricated using the Bulk technology. Some prototypes equipped with analog readout GASSIPLEX chips were developed for characterisation at the CERN/PS faci...

BACKGROUND Although the depth of the counting chamber is an important factor influencing sperm counting, no research has yet been reported on the measurement and comparison of the depth of the chamber. We measured the exact depths of six kinds of sperm counting chambers and evaluated their accuracy. MATERIALS AND METHODS In this prospective study, the depths of six kinds of sperm counting cha...

Role of Context, Arousal, and Female Availability, in the Conditioning of Sexual Behavior and Ejaculatory Preference in the male rat Nafissa Ismail, PhD Concordia University, 2008 Although male rats are known to display greater unconditional sexual arousal and mating preference to copulate with a novel female compared to a familiar one, research has shown that males given repeated copulatory tr...

Purpose The magnetic-field correction factors of compact air-filled ionization chambers have been investigated experimentally and using Monte Carlo simulations up to 1.5 T. role the nonsensitive region within air cavity influence chamber construction on its dose response elucidated. Materials Methods PTW Semiflex 3D 31021, PinPoint 31022, Sun Nuclear Cooperation SNC125c were studied. measured a...

A micron-precision optical alignment system (OASys) for the PHENIX muon tracking chambers is developed. To ensure the required mass resolution of vector meson detection, the relative alignment between three tracking station chambers must be monitored with a precision of 25μm. The OASys is a straightness monitoring system comprised of a light source, lens and CCD camera, used for determining the...

Let M be a compact manifold with a Hamiltonian T action and moment map Φ. The restriction map in equivariant cohomology from M to a level set Φ(p) is a surjection, and we denote the kernel by Ip. When T has isolated fixed points, we show that Ip distinguishes the chambers of the moment polytope for M . In particular, counting the number of distinct ideals Ip as p varies over different chambers ...

Naturally sunlit, outdoor controlled-environment chambers provide an important research tool for studying the effects of environmental variables on crop physiological processes. Typically these types of chambers are semi-closed and are capable of continuously monitoring canopy scale gas exchanges. Accurately determining chamber CO2 leakage rate is essential for correcting measurements of photos...