摘要:

not available

ISSN:1923-4287    

DOI:10.1139/cjr39c-001

出版商:NRC Research Press    

年代:1939

数据来源: NRC

摘要:

Over a period of years, the monthly mean mileage of wind per day during the six months, April to September, at four meteorological stations in central and southern Alberta and Saskatchewan is greatest in April and May, and least in July and August. In all cases the range of variation of the monthly means is considerable, being of the order of 50%. Significant correlation in the inter-annual fluctuations at the four stations is not demonstrable from the available data, but there is some indication of correlation between the mileages at a given station in successive months of the same year. During the season as a whole, northwesterly winds predominate, but in this respect also there are pronounced annual variations.Variation in the amount of wind from day to day within months is also pronounced, and tables are presented showing for each of the six months the relative frequency of occurrence of different daily mileages.On the whole, more wind is recorded during the daytime than at night. The hourly averages for all six months show a definite diurnal trend, the maximum being in the vicinity of 3 p.m., but the actual hourly sequence on a given day may deviate markedly from this underlying regularity. There is a slight tendency for days of above-average temperature to have a higher wind mileage, but this is a minor factor in comparison with the uncorrelated variation of both quantities.

ISSN:1923-4287    

DOI:10.1139/cjr39c-002

出版商:NRC Research Press    

年代:1939

数据来源: NRC

摘要:

Data representing 12 barley varieties grown at 12 experimental stations in Canada were used to examine relations among wort nitrogen (w), malt extract (e), barley nitrogen fractions (x), and total barley nitrogen (n).Significantinter-varietalpartial correlations, independent of total nitrogen, were found between wort nitrogen and salt-soluble nitrogen (rwx.n = 0.88), and between extract and salt-soluble and insoluble nitrogen fractions (rex.n = 0.60 and − 0.65). Partial correlations between wort nitrogen and alcohol-soluble and insoluble nitrogen were negative but insignificant (rwx.n = − 0.54 and − 0.32).Intra-varietalsimple correlations between wort nitrogen and insoluble, alcohol-soluble, and salt-soluble nitrogen fractions were all positive and significant (rwx = 0.77, 0.74, and 0.61), and those between extract and each fraction were all negative and significant (rex = − 0.88, − 0.96 and − 0.77). All of the corresponding partial correlation coefficients were insignificant.The differences between the inter- and intra-varietal relations can be summed up as follows: between varieties, total nitrogen and factors associated with it have little influence on wort nitrogen or extract, whereas nitrogen distribution and factors associated with it have a measurable effect; within varieties, total nitrogen and factors associated with it are largely responsible for the control of wort nitrogen and extract, and one of these factors is nitrogen distribution. The differences result mainly from the fact that whereas within varieties nitrogen distribution is closely related to total nitrogen content, between varieties nitrogen distribution is independent of total nitrogen content.

ISSN:1923-4287    

DOI:10.1139/cjr39c-003

出版商:NRC Research Press    

年代:1939

数据来源: NRC