Dust or Fire by Alyda Faber

Review of Alyda Faber\u27s Dust or Fire

John Dearness (1852-1954) : Canadian pioneer mycologist-plant pathologist

John Dearness, un enseignant doué d'un professionalisme remarquable, fut le premier mycologue canadien reconnu internationalement, en plus d'être un pionnier autodidacte en phytopathologie. Ses habiletés à isoler et à identifier les champignons phytoparasites et son empressement à assister des phytopathologistes professionnels étaient tellement reconnus qu'il fut élu président de la division canadienne de l'American Phytopathological Society. La Société canadienne de phytopathologie, dont il fut un membre-fondateur, l'a nommé membre honoraire. Plusieurs autres honneurs lui ont été décernés en reconnaissance de sa contribution à la botanique, à la mycologie et à la phytopathologie au Canada.John Dearness, a professional educator who became the first internationally acknowledged Canadian-born mycologist, was also a largely self-taught pioneer plant pathologist. His ability to isolate and identify plant parasitic fungi, and his readiness to assist professional plant pathologists, became so widely known that he was elected President of the Canadian Division of the American Phytopathological Society. The Canadian Phytopathological Society, of which he was a charter member, made him an honorary member. Many more honors were conferred on this remarkable man in recognition of his contributions to botany, mycology, and plant pathology in Canada

150 years of teaching plant pathology at McGill University

In the 150 years between the time Sir William Dawson was lecturing on the diseases of fruit trees and vegetables, in 1856, and the plant pathology lectures given by Ajjamanda Kushalappa, in 2006, more than 29 members of the teaching staff at McGill University have given lectures that included significant amounts of plant pathology information. These were both men and women, at all academic levels, from lecturer to full professor, and on both campuses of McGill University. Their history shows that they have played a major role in Canadian plant pathology.Au cours des 150 ans qui séparent le moment où sir William Dawson donnait des cours sur les maladies des arbres fruitiers et des légumes, en 1856, et les cours de phytopathologie donnés par Ajjamanda Kushalappa, en 2006, plus de 29 membres du corps professoral de l'Université McGill ont donné des cours dont une partie importante portait sur la phytopathologie. Ces membres étaient des hommes et des femmes, à des niveaux académiques variés, allant du chargé de cours au professeur agrégé, travaillant sur les deux campus de l'Université McGill. Leur histoire montre qu'ils ont joué un rôle majeur dans la phytopathologie canadienne

Method and apparatus for precision control of radiometer

A radiometer controller of a radiation detector is provided with a calibration method and apparatus comprised of mounting all temperature sensitive elements of the controller in thermostatically controlled ovens during calibration and measurements, using a selected temperature that is above any which might be reached in the field. The instrument is calibrated in situ by adjusting heater power (EI) to the receptor cavity in the radiometer detector to a predetermined full scale level and is displayed by a meter

William Pollock Fraser (1867-1943) : Canadian pioneer plant pathologist-mycologist

William P. Fraser est le premier phytopathologiste-mycologue originaire du Canada à être reconnu internationalement. Alors qu'il enseignait dans sa province natale, la Nouvelle-Ecosse, Fraser débuta sa carrière à titre d'amateur en collectionnant les champignons et particulièrement ceux responsables des rouilles des plantes. Il devint un spécialiste renommé des rouilles et un phytopathologiste-mycologue professionnel. Il enseigna d'abord la mycologie et la phytopathologie, à l'Université McGill puis à l'Université de la Saskatchewan, après avoir été pour un temps chef du premier laboratoire de phytopathologie de l'Ouest canadien. Fraser fut un chercheur pionnier canadien dans la recherche sur les races physiologiques de la rouille du blé, sur la culture des rouilles hétéroïques, en pathologie forestière ainsi que dans l'étude des maladies des racines et du charbon des graminées dans l'ouest du Canada.William P. Fraser, the first Canadian-born plant pathologist-mycologist to be internationally recognized as such, began as an amateur collector of fungi, with emphasis on the plant rusts, while teaching school in his home province, Nova Scotia. He then became a widely acclaimed authority on the rusts and a professional plant pathologist-mycologist. He taught plant pathology and mycology, first at McGill University and then, after an interval as head of the first plant pathology laboratory in Western Canada, at the University of Saskatchewan. Fraser was a Canadian pioneer in research on physiological races of wheat rust; in the culture of heteroecious rust fungi, in forest pathology, and in the study of root and smut diseases of grasses in Western Canada

A study of the understanding of parents and teachers of some commonly used educational terms.

Thesis (M.A.)--Boston Universit

The National Research Council and Seventy-five Years of Agricultural Research in Canada

Various aspects of the agricultural research that has been supported or carried out by the National Research Council of Canada during its first 75 years are reviewed. This research has ranged from such practical problems as: how to improve the edibility of oils from oilseed crops; how to improve the keeping quality of farm produce in storage; and how to control diseases and pests of farm animals and plants, to genetic engineering; the creation of new trans-genic plants and custom-designed enzymes for the benefit of agriculture.Divers aspects de la recherche agricole encouragée ou accomplie par le Conseil national de recherches du Canada pendant ses premiers 75 ans sont révisés. Cette recherche variée comprend des problèmes pratiques tels que l’amélioration de la comestibilité des huiles de cultures oléagineuses, l’amelioration de la qualité de conservation des produits de la ferme en entreposage, la lutte contre les maladies et les pestes chez les animaux de la ferme et des cultures, jusqu’au génie génétique; le développement de nouvelles plantes transgénétiques et les enzymes synthétique pour le bénéfice de l’agriculture

Force-Free Gravitational Redshift: Proposed Gravitational Aharonov-Bohm experiment

We propose a feasible laboratory interferometry experiment with matter waves in a gravitational potential caused by a pair of artificial field-generating masses. It will demonstrate that the presence of these masses (and, for moving atoms, time dilation) induces a phase shift, even if it does not cause any classical force. The phase shift is identical to that produced by the gravitational redshift (or time dilation) of clocks ticking at the atom's Compton frequency. In analogy to the Aharonov-Bohm effect in electromagnetism, the quantum mechanical phase is a function of the gravitational potential and not the classical forces.Comment: Updated to published versio