A. W-Y. Chan

Learn More
A simple device is described, consisting of 12 weighted 23 gauge disposable needles (0.2 to 5.2 g), for testing sensation in busy diabetic clinics. The pinprick sensory threshold (PPT) is the lightest weighted needle which consistently elicits a sharp sensation. The subjects were 48 healthy controls (hospital staff), 44 diabetic patients without neuropathic(More)
The results based on 1992 –95 data (Run 1) from the CDF and D0 experiments on the measurements of the W boson mass and width are presented, along with the combined results. We report a Tevatron collider average M W ˆ 80:456 0:059 GeV. We also report the Tevatron collider average of the directly measured W boson width ÿ W ˆ 2:115 0:105 GeV. We describe a new(More)
We report the results of a search for a W' boson produced in pp; collisions at a center-of-mass energy of 1.8 TeV using a 106 pb(-1) data sample recorded by the Collider Detector at Fermilab. We observe no significant excess of events above background for a W' boson decaying to a top and bottom quark pair. In a model where this boson would mediate(More)
Two young women with pituitary gland enlargement and hyperprolactinaemia were referred for pituitary surgery. Both had received bromocriptine (one patient for 13 years) for presumed prolactinoma. Mild clinical signs of hypothyroidism were present and endocrine tests revealed primary autoimmune thyroid failure. Following thyroxine replacement treatment, the(More)
3 We have searched for evidence of physics beyond the standard model in events that include an energetic photon and an energetic b-quark jet, produced in 85 pb −1 of ¯ pp collisions at 1.8 TeV at the Tevatron Collider at Fermilab. This signature, containing at least one gauge boson and a third-generation quark, could arise in the production and decay of a(More)
The data production for the CDF experiment is conducted on a large Linux PC farm designed to meet the needs of data collection at a maximum rate of 40 MByte/sec. We present two data production models that exploits advances in computing and communication technology. The first production farm is a centralized system that has achieved a stable data processing(More)