A COMPARISON OF MICROBIAL ACTIVITY IN AN ONTARIO FOREST SOIL UNDER PINE, HEMLOCK, AND MAPLE COVER

1954 ◽  
Vol 1 (1) ◽  
pp. 45-54 ◽  
Author(s):  
F. E. Chase ◽  
G. Baker

Soil samples, taken by horizons, were obtained from the University of Toronto Forest near Dorset under stands of maple, hemlock, and pine. Counts of bacteria, actinomycetes, and fungi made by the plate method indicated that in general the organic layer contained the largest population, and also that in the organic layer under conifers the fungi exceeded the combined counts of the other two groups, whereas under maple the bacteria predominated. Using the perfusion method, nitrification did not occur to any extent in these forest soil samples except when lime was added, and even then nitrification started very slowly unless a few crumbs of garden soil were added, presumably as a source of active nitrifying bacteria.

2019 ◽  
Vol 14 (12) ◽  
pp. 782-784
Author(s):  
Shaurya Taran ◽  
Benjamin Chin-Yee ◽  
Allan S Detsky

No matter the era, few aspects of residency are more defining or memorable than overnight call. Nights can be a time of growth and learning but also of fear and uncertainty, as residents take on the responsibility of managing sick patients on their own. One of us (ASD) started his residency in 1978 at the Massachusetts General Hospital in Boston; the other two (ST and BCY) started theirs in 2016 and 2017, respectively, at the University of Toronto. In this essay, we reflect on our experiences of night call separated by 40 years, highlighting what has changed and what has stayed the same.


2021 ◽  
Vol 43 (4) ◽  
pp. 37-37

Abstract The 1923 Nobel Prize in Physiology or Medicine was awarded jointly to Canadian physician Frederick Grant Banting (1891-1941) and Scottish biochemist and physiologist John James Macleod (1876-1935) “for the discovery of insulin”. It was a remarkable finding since diabetes mellitus was an untreatable and often lethal disease until then. Much has been written about Banting and Macleod’s breakthrough research conducted at the University of Toronto starting in November 1920, including the key roles played by their trustworthy assistants, medical student Charles Best and biochemist James Collip. On the other hand, much less has been written about the pioneering research of Romanian physiologist Nicolae Paulescu (1869-1931), whose work on the metabolic effects of canine pancreatic extracts predates that of Banting and Macleod but was interrupted by World War I. Should Best, Collip, or Paulescu have also shared the Nobel Prize?


1975 ◽  
Vol 5 (2) ◽  
pp. 84-91
Author(s):  
Carroll L. Olsen

Spanish intonation has been described by several authors and linguists with a variety of subjective terms. Those adjectives which recur most frequently are GRAVE and AGUDO. Grave, which seems to mean ‘low pitch’, is assigned mainly to the dialects of northern Spain and especially to Castilian; agudo, on the other hand, seems to mean ‘high pitch’ and is frequently used to describe the dialects of Spanish America. In this article some objective data will be presented on voice register and intonation in two dialects of Spanish, those of Madrid and Mexico City, as a first step in clarifying the use of these two subjective terms. The results of research presented here are based on tape-recorded interviews with native Spanish speakers and an electronic analysis of those recordings by the Léon-Martin pitch extractor at the University of Toronto.


Author(s):  
SENTHILRAJR ◽  
GEJALAKSHMI S. ◽  
THARUNKUMAR M. ◽  
SANTHOSH A. ◽  
LOKESH V. ◽  
...  

Objective: Screening of industrial important bioactive metabolites of Antibiotics, hydrolytic enzymes producing microorganism from garden soil of Dr. M. G. R Educational and Research Institute, Chennai. Methods: Desired ten soil samples taken and were serially diluted. Crowded plate method used for antibiotic-producing microorganism and Starch agar medium and gelatin medium tests were performed for hydrolytic enzymes (Amylase and Gelatinase). Results: Among the tested soil samples, antibiotic producing microorganisms were not found, but has hydrolytic enzymes amylase and gelatinase. Thus screened soil samples biochemically identified as Bacillus species. Conclusion: This study concludes that, the collected sample, produced Antibiotic negative result and it’s possess other industrial important hydrolytic enzymes. Thus Screening of more bioactive metabolites producing ability from a single isolate, will be more useful for effective screening.


1966 ◽  
Vol 19 (3) ◽  
pp. 219-228
Author(s):  
Beatrice Corrigan

Since 1963, when I published in Renaissance News (XVI,4, 298-307) a supplement to my Catalogue of Italian Plays, 1500-1700 in the University of Toronto Library (University of Toronto Press, 1961), the collection has been enriched by some fifty plays. Particularly interesting are the first Italian translation of Aristophanes; a group of the musical plays whose vogue grew steadily during the seventeenth century; and a couple of examples, Italian and Latin, of the other new musico-dramatic form of the period, the oratorio. Noteworthy also is Benetti's Scherno di Giove, a curious blending of mythology and commedia dell'arte which survived in the ‘classical’ burlesques of the Victorian theatre.


Skull Base ◽  
2009 ◽  
Vol 19 (03) ◽  
Author(s):  
John de Almeida ◽  
Allan Vescan ◽  
Jolie Ringash ◽  
Patrick Gullane ◽  
Fred Gentili ◽  
...  

Author(s):  
Lori Stahlbrand

This paper traces the partnership between the University of Toronto and the non-profit Local Food Plus (LFP) to bring local sustainable food to its St. George campus. At its launch, the partnership represented the largest purchase of local sustainable food at a Canadian university, as well as LFP’s first foray into supporting institutional procurement of local sustainable food. LFP was founded in 2005 with a vision to foster sustainable local food economies. To this end, LFP developed a certification system and a marketing program that matched certified farmers and processors to buyers. LFP emphasized large-scale purchases by public institutions. Using information from in-depth semi-structured key informant interviews, this paper argues that the LFP project was a disruptive innovation that posed a challenge to many dimensions of the established food system. The LFP case study reveals structural obstacles to operationalizing a local and sustainable food system. These include a lack of mid-sized infrastructure serving local farmers, the domination of a rebate system of purchasing controlled by an oligopolistic foodservice sector, and embedded government support of export agriculture. This case study is an example of praxis, as the author was the founder of LFP, as well as an academic researcher and analyst.


2013 ◽  
Vol 42 (3) ◽  
pp. 37-42
Author(s):  
Ken Derry

Although none of the articles in this issue on the topic of religion and humor are explicitly about teaching, in many ways all of them in fact share this central focus. In the examples discussed by the four authors, humor is used to deconstruct the category of religion; to comment on the distance between orthodoxy and praxis; to censure religion; and to enrich traditions in ways that can be quite self-critical. My response to these articles addresses each of the above lessons in specific relation to experiences I have had in, and strategies I have developed for, teaching a first-year introductory religion course at the University of Toronto.


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