Lawrence Moss

Learn More
OBJECTIVE The purpose of this work is to compare full-field digital mammography and screen-film mammography for the detection of breast cancer in a screening population. SUBJECTS AND METHODS Full-field digital mammography was performed in addition to screen-film mammography in 6736 examinations of women 40 years old and older presenting for screening(More)
  • W. W. Ash, H. R. Band, +35 authors R. W. Zdarko
  • 1987
The design considerations, construction techniques, prototype tests and performance characteristics, of a pressurized drift chamber used in the MAC detector at PEP are described. The chamber consists of 324 aluminized mylar tubes of 6.9 mm diameter with wall thickness of lOOhm. With appropriate shielding it operates successfully at 4.6 cm from the beam(More)
It has long been recognized that many expressions in natural language can be thought of as monotone and antitone operators. If we take two preordered domains (P 1 , ≤ 1) and (P 2 , ≤ 2), then a function f : P 1 → P 2 is monotone if for all a, b ∈ P 1 , if a ≤ 1 b then f (a) ≤ 2 f (b). A function is antitone if a ≤ 1 b implies f (b) ≤ 2 f (a). A natural(More)
High precision measurements of electron positron annihilation into final states of 2, 3 and 4 photons are presented. The data were obtained with the MAC detector at the PEP storage ring of the Stanford Linear Accelerator Center, at a center of mass energy of 29 GeV. The measured e+e-+ 77 differential cross section is used to test the validity of Quantum(More)
A search in e+e-annihilation for final states which contain only a single energetic photon has been performed at fi = 29 GeV with the MAC detector at PEP. The upper limit, on an anomalous signal has been interpreted in terms of mass limits for supersymmetric particles assuming radiative pair production of either supersymmetric photons or neutrinos. For the(More)
Final results are presented from a search for single-photons produced in association with neutrinos or other weakly interacting neutral particles in e+e-annihilations at @ = 29GeV. The search was performed with the MAC detector at PEP in a total integrated luminosity of 177pb-l. The search limits the number of light-neutrino families to NY < 16. The mass of(More)
The ultrasonographic image of the fetal head at the appropriate level for determination of the biparietal diameter reveals an apparent asymmetry of the cerebral hemispheres. This was confirmed and analyzed in 49 sequential fetuses who had no neurologic deficits at birth and in the autopsy specimen of an 8-month-old infant without any anatomic abnormalities(More)
  • 1