{"title":"APPLICATION DE LA REACTION DE MEERWEIN A L'ACIDE β-METHYLCINNAMIQUE ET AU METHACRYLATE DE METHYLE","authors":"P. L'Écuyer, C. Olivier","doi":"10.1139/CJR50B-077","DOIUrl":"https://doi.org/10.1139/CJR50B-077","url":null,"abstract":"","PeriodicalId":9392,"journal":{"name":"Canadian journal of research","volume":"1 1","pages":"648-651"},"PeriodicalIF":0.0,"publicationDate":"1950-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88260533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A factual test of several possible mechanisms by which alkenes are oxymercurated shows that while addition of mercuric acetate to cyclohexene can be effected smoothly, this 1-acetoxy-2-acetoxymercu...
{"title":"THE MECHANISM OF OXYMERCURATION OF ALKENES","authors":"A. Brook, George F. Wright","doi":"10.1139/CJR50B-074","DOIUrl":"https://doi.org/10.1139/CJR50B-074","url":null,"abstract":"A factual test of several possible mechanisms by which alkenes are oxymercurated shows that while addition of mercuric acetate to cyclohexene can be effected smoothly, this 1-acetoxy-2-acetoxymercu...","PeriodicalId":9392,"journal":{"name":"Canadian journal of research","volume":"45 1","pages":"623-638"},"PeriodicalIF":0.0,"publicationDate":"1950-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90237726","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The voluminous starch sludge or "squeegee" fraction, obtained with all known methods of wheat starch manufacture, consists of strongly hydrated pentosan masses in which starch granules are embedded. The pentosans of the bran and endosperm both contribute to the formation of these heterogeneous complexes. The "squeegee" starch fraction is not abolished by allowing the crude starch slurries to ferment, by exposing them briefly to mildly acid or alkaline solutions, or to C2−C12 monohydric alcohols. The pentosan and protein contents of this low quality starch fraction may be greatly reduced by 24–48 hr. digestion in dilute acid at pH 2.0 before recovering the starch on the centrifuge.
{"title":"SEPARATION OF STARCH AND GLUTEN: V. PROBLEMS IN WHEAT STARCH MANUFACTURE ARISING FROM FLOUR PENTOSANS","authors":"K. A. Clendenning, D. E. Wright","doi":"10.1139/CJR50F-035","DOIUrl":"https://doi.org/10.1139/CJR50F-035","url":null,"abstract":"The voluminous starch sludge or \"squeegee\" fraction, obtained with all known methods of wheat starch manufacture, consists of strongly hydrated pentosan masses in which starch granules are embedded. The pentosans of the bran and endosperm both contribute to the formation of these heterogeneous complexes. The \"squeegee\" starch fraction is not abolished by allowing the crude starch slurries to ferment, by exposing them briefly to mildly acid or alkaline solutions, or to C2−C12 monohydric alcohols. The pentosan and protein contents of this low quality starch fraction may be greatly reduced by 24–48 hr. digestion in dilute acid at pH 2.0 before recovering the starch on the centrifuge.","PeriodicalId":9392,"journal":{"name":"Canadian journal of research","volume":"19 1","pages":"390-400"},"PeriodicalIF":0.0,"publicationDate":"1950-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85275715","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Two species of Gelasinospora are described for the first time. G. adjuncta Cain, a heterothallic species with eight-spored asci, was grown in moist chambers on dung from Germany and Quebec. G. retispora Cain, distinguished by means of the large angular pits in the ascospore wall was isolated in culture from seeds of Swiss chard from Holland and from apple twigs in Quebec. G. tetrasperma Dowding has been found in moist chambers on dung from Ontario, Quebec, Venezuela, and Germany and isolated from seeds from Quebec. Notes are added regarding the disposition of Anthostomella destruens Shear and Sordaria uvicola Viala and Marsais.
{"title":"Studies of coprophilous Ascomycetes. I. Gelasinospora.","authors":"R. F. Cain","doi":"10.1139/CJR50C-033","DOIUrl":"https://doi.org/10.1139/CJR50C-033","url":null,"abstract":"Two species of Gelasinospora are described for the first time. G. adjuncta Cain, a heterothallic species with eight-spored asci, was grown in moist chambers on dung from Germany and Quebec. G. retispora Cain, distinguished by means of the large angular pits in the ascospore wall was isolated in culture from seeds of Swiss chard from Holland and from apple twigs in Quebec. G. tetrasperma Dowding has been found in moist chambers on dung from Ontario, Quebec, Venezuela, and Germany and isolated from seeds from Quebec. Notes are added regarding the disposition of Anthostomella destruens Shear and Sordaria uvicola Viala and Marsais.","PeriodicalId":9392,"journal":{"name":"Canadian journal of research","volume":"35 1","pages":"566-576"},"PeriodicalIF":0.0,"publicationDate":"1950-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76278145","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Thiouracil depressed the increases of serum calcium, serum riboflavin, and serum vitamin A evoked by estrogen in the sexually immature pullet. In these respects the effects of thiouracil resembled the effects of thyroxine. In contrast to thyroxine, however, thiouracil increased the hypertrophy of the liver and oviduct induced by estrogen. Estrogen did not significantly increase total liver riboflavin, whereas estrogen plus thiouracil produced a significant increase.
{"title":"Some biochemical effects of thiouracil on the response of the immature pullet to estrogen.","authors":"R. Common, T. Keefe, W. Maw","doi":"10.1139/CJR50D-017","DOIUrl":"https://doi.org/10.1139/CJR50D-017","url":null,"abstract":"Thiouracil depressed the increases of serum calcium, serum riboflavin, and serum vitamin A evoked by estrogen in the sexually immature pullet. In these respects the effects of thiouracil resembled the effects of thyroxine. In contrast to thyroxine, however, thiouracil increased the hypertrophy of the liver and oviduct induced by estrogen. Estrogen did not significantly increase total liver riboflavin, whereas estrogen plus thiouracil produced a significant increase.","PeriodicalId":9392,"journal":{"name":"Canadian journal of research","volume":"17 1","pages":"272-279"},"PeriodicalIF":0.0,"publicationDate":"1950-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84704787","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The pasmo pathogen sporulated freely on potato dextrose agar containing yeast extract. Spores suspended in water with gelatin as a spreader–sticker were sprayed onto flax plants at different stages...
{"title":"EFFECT OF PASMO DISEASE ON SEED YIELD AND THOUSAND KERNEL WEIGHT OF FLAX","authors":"W. E. Sackston","doi":"10.1139/CJR50C-029","DOIUrl":"https://doi.org/10.1139/CJR50C-029","url":null,"abstract":"The pasmo pathogen sporulated freely on potato dextrose agar containing yeast extract. Spores suspended in water with gelatin as a spreader–sticker were sprayed onto flax plants at different stages...","PeriodicalId":9392,"journal":{"name":"Canadian journal of research","volume":"26 1","pages":"493-512"},"PeriodicalIF":0.0,"publicationDate":"1950-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85538421","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In the following contribution four species of Peniophora are described, illustrated, and discussed, which appear to represent a closely related group. These are Peniophora rimicola (Karst.) Hohn. & Litsch., P. pruinosa (Pat.) comb. nov., P. pulverulenta (Litsch.) comb. nov., and P. praeterita proposed as a new species. These species have several characters in common. All are mucous-gelatinous when fresh, drying to a vernicose film. In all of them simple, capitate, or apically lobed cystidioles are present and the spores show some degree of roughening when mounted in Melzer's solution. All but one, P. pulverulenta, have long emergent cystidia which may be slightly thickened at the base.
{"title":"STUDIES OF CANADIAN THELEPHORACEAE: VI. THE PENIOPHORA RIMICOLA GROUP","authors":"H. S. Jackson","doi":"10.1139/CJR50C-031","DOIUrl":"https://doi.org/10.1139/CJR50C-031","url":null,"abstract":"In the following contribution four species of Peniophora are described, illustrated, and discussed, which appear to represent a closely related group. These are Peniophora rimicola (Karst.) Hohn. & Litsch., P. pruinosa (Pat.) comb. nov., P. pulverulenta (Litsch.) comb. nov., and P. praeterita proposed as a new species. These species have several characters in common. All are mucous-gelatinous when fresh, drying to a vernicose film. In all of them simple, capitate, or apically lobed cystidioles are present and the spores show some degree of roughening when mounted in Melzer's solution. All but one, P. pulverulenta, have long emergent cystidia which may be slightly thickened at the base.","PeriodicalId":9392,"journal":{"name":"Canadian journal of research","volume":"11 1","pages":"525-534"},"PeriodicalIF":0.0,"publicationDate":"1950-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87801481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The densities of binary solutions of hydrogen peroxide and water from 0 °C. down to their respective freezing point were measured by the dilatometric method with an estimated precision of ± 0.0003 gm. per ml. Volume changes during solidification were also measured but with lower precision. Solutions containing less than about 50% by weight of hydrogen peroxide expand on freezing whereas more concentrated solutions contract appreciably. Various observations on the phenomenon of supercooling seem to indicate that no solid solutions are formed between the two components. Under certain conditions hydrogen peroxide solutions decompose on melting.
{"title":"CHANGES OF DENSITY OF HYDROGEN PEROXIDE SOLUTIONS ON COOLING AND FREEZING","authors":"P. Giguère, P. Geoffrion","doi":"10.1139/CJR50B-072","DOIUrl":"https://doi.org/10.1139/CJR50B-072","url":null,"abstract":"The densities of binary solutions of hydrogen peroxide and water from 0 °C. down to their respective freezing point were measured by the dilatometric method with an estimated precision of ± 0.0003 gm. per ml. Volume changes during solidification were also measured but with lower precision. Solutions containing less than about 50% by weight of hydrogen peroxide expand on freezing whereas more concentrated solutions contract appreciably. Various observations on the phenomenon of supercooling seem to indicate that no solid solutions are formed between the two components. Under certain conditions hydrogen peroxide solutions decompose on melting.","PeriodicalId":9392,"journal":{"name":"Canadian journal of research","volume":"101 1","pages":"599-607"},"PeriodicalIF":0.0,"publicationDate":"1950-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82231061","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Young Douglas fir in British Columbia sustained damage from Phomopsis lokoyae Hahn during the winter of 1948–49. Damage in the form of annual stem and branch cankers, leader die-back, and stem gird...
{"title":"TWO NEW OUTBREAKS OF PHOMOPSIS LOKOYAE IN BRITISH COLUMBIA","authors":"G. P. Thomas","doi":"10.1139/CJR50C-027","DOIUrl":"https://doi.org/10.1139/CJR50C-027","url":null,"abstract":"Young Douglas fir in British Columbia sustained damage from Phomopsis lokoyae Hahn during the winter of 1948–49. Damage in the form of annual stem and branch cankers, leader die-back, and stem gird...","PeriodicalId":9392,"journal":{"name":"Canadian journal of research","volume":"88 1","pages":"477-481"},"PeriodicalIF":0.0,"publicationDate":"1950-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80287560","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
An experiment to measure the daily potential evapotranspiration from vegetation-covered soil surfaces was conducted in Toronto during the 1947, 1948, and 1949 growing seasons. The potential evaporation from moist bare soil was also measured and compared with the evaporation from dry soil. Results indicate that the Thornthwaite formula for computing potential water loss is valid at this latitude for both vegetation-covered and moist soil. When drying of the surface soil occurred, the water loss was diminished.
{"title":"THREE YEARS OF EVAPOTRANSPIRATION AT TORONTO","authors":"M. Sanderson","doi":"10.1139/CJR50C-028","DOIUrl":"https://doi.org/10.1139/CJR50C-028","url":null,"abstract":"An experiment to measure the daily potential evapotranspiration from vegetation-covered soil surfaces was conducted in Toronto during the 1947, 1948, and 1949 growing seasons. The potential evaporation from moist bare soil was also measured and compared with the evaporation from dry soil. Results indicate that the Thornthwaite formula for computing potential water loss is valid at this latitude for both vegetation-covered and moist soil. When drying of the surface soil occurred, the water loss was diminished.","PeriodicalId":9392,"journal":{"name":"Canadian journal of research","volume":"9 1","pages":"482-492"},"PeriodicalIF":0.0,"publicationDate":"1950-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88648860","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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