Studies on the Leaf Temperature (2)
نویسندگان
چکیده
منابع مشابه
Aftereffects of low and high temperature pretreatment on leaf resistance, transpiration, and leaf temperature in xanthium.
Leaf resistance for water vapor (total diffusion resistance minus boundary layer resistance), transpiration, and leaf temperature were measured in attached leaves of greenhouse-grown Xanthium strumarium L. plants that had been pretreated for 72 hours with high (40 C day, 35 C night), or low (10 C day, 5 C night) air temperatures. Measurements were made in a wind tunnel at light intensity of 1.1...
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The present study deals with the pharmacognostic studies on the leaves of Melilotus indica. The drug shows the presence of tannins, Xanthoprotein, starch, cystine, sterols, triterpenoids, reducing sugars, saponins and alkaloids.
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قاعده مقتضی و مانع در متون فقهی کم و بیش مستند احکام قرار گرفته و مورد مناقشه فقهاء و اصولیین می باشد و مشهور معتقند مقتضی و مانع، قاعده نیست بلکه یکی از مسائل ذیل استصحاب است لذا نگارنده بر آن شد تا پیرامون این قاعده پژوهش جامعی انجام دهد. به عقیده ما مقتضی دارای حیثیت مستقلی است و هر گاه می گوییم مقتضی احراز شد یعنی با ماهیت مستقل خودش محرز گشته و قطعا اقتضاء خود را خواهد داشت مانند نکاح که ...
15 صفحه اولTemperature Dependent ESR Studies on
Frozen samples of aqueous solutions of oxidized Pt 6-methyl-uracil "blue" were studied bv ESR spectroscopy at temperatures T ranging between —196 °C and —10 °C. When T was raised a distinct change in the line pattern was observed at about —35 °C. The resulting type of spectrum is very similar to the ESR spectrum of MAGNUS' Green Salt. The observed effect is suggested to be due to a change of th...
متن کاملEffects of elevated atmospheric CO(2) and temperature on leaf optical properties in Acer saccharum.
Elevated partial pressures of atmospheric carbon dioxide, similar to numerous causes of plant stress, may alter leaf pigmentation and structure and thus would be expected to alter leaf optical properties. Hypotheses that elevated CO(2) pressure and air temperature would alter leaf optical properties were tested for sugar maple (Acer saccharum) in the middle of its fourth growing season under tr...
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ژورنال
عنوان ژورنال: Journal of Agricultural Meteorology
سال: 1962
ISSN: 0021-8588,1881-0136
DOI: 10.2480/agrmet.18.92