Critical stresses necessary to generate dislocation glide loops in Czochralski silicon containing oxide precipitates have been investigated. Using three-point bending and etching techniques, it was possible to determine the minimum shear stress required to generate dislocation glide loops from controlled distribution of precipitates under constant-stress conditions. The generation of glide disl...

Sediment fall-velocities measured by the Woods Hole Rapid Sediment Analyzer can now be obtained directly on punched paper tape in a form suitable for processing by a computer. This technique saves much time because it eliminates manual card punching, a step in which an operator transfers values from sediment analyses to punch cards in order to make the data acceptable tocomputers.

BACKGROUND Tissue microarray (TMA) technology allows rapid visualization of molecular markers by immunohistochemistry and in situ hybridization. In addition, TMA instrumentation has the potential to assist in other applications: punches taken from donor blocks can be placed directly into tubes and used for nucleic acid analysis by PCR approaches. However, the question of possible cross-contamin...

“Everyone has a plan until they get punched in the mouth.” Never this quote, uttered response to challenger’s reported take title away from heavyweight champion Mike Tyson, rang truer than past 20 months as global population wrestles with fallout on SARS-CoV-2 pandemic. While countless lives were disrupted both directly and indirectly during time, members of medical community bore brunt their p...

THEROYAL SOCIETY Scientific Information Conference in 1948 included a working party on mechanical indexing. This working party considered the various systems of mechanical selection which were brought to its attention: edge-notched cards; the Batten system; Hollerith and Power-Samas punched card systems; the Samian punched card system; the Rapid Selector; the Univac; Zatocoding; and the combina...

Voting machine failures stood front and center in the recount of the 2000 presidential election vote in Florida. The election dispute between George Bush and Al Gore exposed problems in the absentee and registration systems, in the management of polling places, and even in the definition of a vote in Florida’s law. However, a single image captured the heart of the election controversy: Judge Ro...

Karen Sparck Jones' Cambridge PhD thesis of 1964 has had an interesting and unusual history. Entitled Synonymy and Semantic Classification (henceforth SSC) it was reproduced only in the simple mimeo book form then used by the Cambridge Language Research Unit where she worked. It was finally published in 1986, in an Edinburgh University Press series. Even that late publication managed to be ahea...

Montréal. Il a pour mission la promotion et la valorisation de la recherche. Érudit offre des services d'édition numérique de documents scientifiques depuis 1998. Note : les règles d'écriture des références bibliographiques peuvent varier selon les différents domaines du savoir. Ce document est protégé par la loi sur le droit d'auteur. L'utilisation des services d'Érudit (y compris la reproduct...

rhages bilaterally. An old atrophic scar was noted in the left macula, with the right macula appearing normal. There were no vitreal snow balls, snow banking, punched-out chorioretinal scars, nor any other complications. Investigations included a full blood examination and film, calcium levels, syphilis serology, angiotensin-converting enzyme assay, chest radiography, and HLAA29 typing. All res...

INTRODUCTION The occurrence of cytomegalovirus colitis is well known in immunosuppressed patients, such as neoplastic patients following chemotherapy, although its exact etiology remains unclear. CASE PRESENTATION We present a case of cytomegalovirus colitis occurring in a 77-year-old man with vomiting and diarrhea 2 weeks after initial systemic chemotherapy consisting of 5-fluorouracil, leuc...