| 单词 | chlorophyl |
| 例句 | To capture sunlight and snag the energy associated with it, leaves are covered with chlorophyl, which is a remarkably effective at absorbing sunlight. The leaves are starting to show signs of autumn. Here’s why they change. 2017-09-20T04:00:00Z An infrared image can show things such as the health of plants, through the level of chlorophyl in them. Companies monitoring the oil patch by drone 2015-10-11T04:00:00Z For example, chlorophyl, the green coloring matter of vegetation, is a peculiar green as compared with green pigments. Visual Illusions Their Causes, Characteristics and Applications 2011-06-02T02:00:25.247Z Physiologically, the fungi are incapable of independent existence, being destitute of chlorophyl. The North American Slime-Moulds A Descriptive List of All Species of Myxomycetes Hitherto Reported from the Continent of North America, with Notes on Some Extra-Limital Species The plants are deficient in chlorophyl—see the pale green of the leaves!—and the people need vitamines. Astounding Stories of Super-Science, December 1930 It was a very delicate piece of work having to do with experiments I am making on chlorophyl—quick adjustments, you know. The End of Time What corresponds in it to the sensibility of the animal is the impressionability, quite of its kind, of its chlorophyl light. Creative Evolution Like chlorophyl, too, it produced edible starches and sugars that could be imbibed, mixed with water, through a tube inside the Archer's helmet. The Planet Strappers In this respect the slime-moulds are like the fungi; they are nearly all saprophytes and absolutely destitute of chlorophyl. The North American Slime-Moulds A Descriptive List of All Species of Myxomycetes Hitherto Reported from the Continent of North America, with Notes on Some Extra-Limital Species As regards the subterraneous flora, Dr. Schneider's investigations resulted in showing that the plants which thrive in the dark regions under ground are those which possess no chlorophyl and are sensitive to light. Scientific American Supplement, No. 664, September 22,1888 In some plants with variegated foliage we have the curious fact that the cells containing chlorophyl reflecting one color produce cells which reflect an entirely different color. Scientific American, Volume XLIII., No. 25, December 18, 1880 A Weekly Journal of Practical Information, Art, Science, Mechanics, Chemistry, and Manufactures. Green foods have been proven to be sources of the best iron, which is associated with chlorophyl. Northern Nut Growers Association Report of the Proceedings at the Twenty-Fifth Annual Meeting Battle Creek, Michigan, September 10 and 11, 1934 In the first place you have the effect of light upon chlorophyl which is important; in the second place, the melted paraffin fills all interstices in which sap would collect and ferment. Northern Nut Growers Association, Report Of The Proceedings At The Tenth Annual Meeting. Battle Creek, Michigan, December 9 and 10, 1919 The cells of which it is composed are polyhedral, thicker, and more loosely joined, and filled with sap and chlorophyl. Scientific American, Volume 40, No. 13, March 29, 1879 A Weekly Journal of Practical Information, Art, Science, Mechanics, Chemistry, and Manufactures Rigid in form, colorless, or green by chlorophyl. Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 We read lately in the Tribune that leaves treated with extract of chlorophyl became transparent. St. Nicholas Magazine for Boys and Girls, Vol. 5, Nov 1877-Nov 1878 No 1, Nov 1877 This coloring matter is called chlorophyl or leaf green. The First Book of Farming The latter is extremely valuable for promoting the activity of chlorophyl, which acts only in the presence of light and in the best way in the best light. Northern Nut Growers Association, Report Of The Proceedings At The Tenth Annual Meeting. Battle Creek, Michigan, December 9 and 10, 1919 This peculiar behavior of quinine on exposure to sunlight finds its parallel in the behavior of chlorophyl with the direct rays of the sun. Scientific American Supplement, No. 508, September 26, 1885 Because a peculiar chemical substance called chlorophyl, formed within their cells, absorbs all other rays of light, reflecting only blue and yellow—which mixture produces the different green tints. A Catechism of Familiar Things; Their History, and the Events Which Led to Their Discovery. With a Short Explanation of Some of the Principal Natural Phenomena. For the Use of Schools and Families. Enlarged and Revised Edition. The division4 of this group into two classes is based upon the presence of chlorophyl in algæ and its absence in fungi. Scientific American Supplement, No. 623, December 10, 1887 To show that chlorophyl is necessary for starch formation in the leaf 115 65. The First Book of Farming The second point of value consists in allowing the actinic ray in the sunlight to act upon the chlorophyl in bud and bark of the scion and it does not attract the destructive heat ray. Northern Nut Growers Association, Report Of The Proceedings At The Tenth Annual Meeting. Battle Creek, Michigan, December 9 and 10, 1919 It is well known that the origin of chlorophyl in the plant is entirely connected with light, so that etiolated leaves growing in the dark form no chlorophyl. Scientific American Supplement, No. 508, September 26, 1885 Only a little starch and no chlorophyl was found in the plants deprived of sunlight and only receiving the electric light. Scientific American Supplement, No. 841, February 13, 1892 Dr. Schunck, for example, during the progress of his research on chlorophyl, noticed the very permanent green dye which this otherwise fugitive coloring matter gives in combination with copper. Scientific American Supplement, No. 810, July 11, 1891 Then leaf 4 was taken from it; 5 represents this leaf after the chlorophyl was taken from it: it is white; 6 is the same after treatment with iodine. The First Book of Farming The melted paraffin being perfectly transparent, allows the light ray to set the chlorophyl into activity. Northern Nut Growers Association, Report Of The Proceedings At The Tenth Annual Meeting. Battle Creek, Michigan, December 9 and 10, 1919 But as soon as chlorophyl is removed from the sphere of vegetable life, a brief exposure to the direct rays of the sun destroys its green color completely. Scientific American Supplement, No. 508, September 26, 1885 The decolorizing is easily effected through boiling alcohol, which dissolves the chlorophyl and leaves the leaf slightly yellowish and perfectly translucent. Scientific American Supplement No. 822, October 3, 1891 In the chlorophyl photograph, the distant hills are not overexposed, nor is the foreground underexposed; the yellow straw-stacks appear nearly white, and bright autumn leaves contrast strongly with the dark green about them. Scientific American Supplement, No. 492, June 6, 1885 To show that chlorophyl is necessary for starch formation in the leaf. The First Book of Farming All the life processes of the tree are carried on under the influence of the green chlorophyl grains, and these work only in the presence of light. Northern Nut Growers Association, Report Of The Proceedings At The Tenth Annual Meeting. Battle Creek, Michigan, December 9 and 10, 1919 These tubular filaments are composed of a nearly transparent cellulose wall, including an inner layer thickly studded with bright green granules of chlorophyl. Scientific American Supplement, No. 460, October 25, 1884 The juice was of a light green color, very turbid, evidently caused by a large amount of chlorophyl. Scientific American Supplement, No. 415, December 15, 1883 The chlorophyl plate was overexposed, brought out all colors better than the eosine plate, and gave full value to the bright scarlet of the hat, the detail in which was beautifully rendered. Scientific American Supplement, No. 492, June 6, 1885 The green color that characterizes many vegetables is due to a substance called chlorophyl. Woman's Institute Library of Cookery Volume 2: Milk, Butter and Cheese; Eggs; Vegetables However this may be, the naturalist's attention is attracted every time he finds a plant deprived of chlorophyl, and one in which the leaves seem to be wanting, as in the dodder that occupies us. Scientific American Supplement, No. 430, March 29, 1884 The chlorophyl appears to assume a darker hue, and the granules become more densely crowded. Scientific American Supplement, No. 460, October 25, 1884 It is moreover readily bleached by light, another analogy to chlorophyl, as we know from Pringsheim's researches. Scientific American Supplement, No. 324, March 18, 1882 Attempts have been made to produce isochromatic gelatine dry plates which, while many times more sensitive to white light than my chlorophyl plates, shall also show the same relative color-sensitiveness. Scientific American Supplement, No. 492, June 6, 1885 In reality, they are a fungus growth containing no chlorophyl, or green coloring matter, and, as shown in Fig. Woman's Institute Library of Cookery Volume 2: Milk, Butter and Cheese; Eggs; Vegetables The chlorophyl is of minor importance, as it has little effect on the general results. Scientific American Supplement, No. 303, October 22, 1881 Not a single chlorophyl granule was to be seen. Scientific American Supplement, No. 460, October 25, 1884 So, too, in Velella, in sea-anemones, and in medusæ; in all cases the protoplasm and nucleus, the cellulose, starch, and chlorophyl, can be made out in the most perfectly distinct way. Scientific American Supplement, No. 324, March 18, 1882 Plates prepared with chlorophyl from fresh leaves do not require treatment with the tea organifier to secure this degree of sensitiveness. Scientific American Supplement, No. 492, June 6, 1885 Without that, nothing containing chlorophyl can grow; and science has always maintained that human life must depend, at last analysis, on chlorophyl, on the green plants containing it. Darkness and Dawn There is every reason to suppose that the chlorophyl and inorganic constituents do not differ materially in the most widely different sorts of hops. Scientific American Supplement, No. 303, October 22, 1881 Microscopic inspection of red and white corpuscles, of virus, tissues, protoplasm and chlorophyl is probably very interesting to lovers of microbes, and students of segmentation, but such abstract pursuits appertain to purple and fine linen. At the Mercy of Tiberius It is now nearly forty years since the presence of chlorophyl in certain species of planarian worms was recognized by Schultze. Scientific American Supplement, No. 324, March 18, 1882 My method consists in treating ordinary collodio-bromide emulsion plates with blue myrtle chlorophyl solution, exposing them through the yellow screen, and then developing them in the usual manner. Scientific American Supplement, No. 492, June 6, 1885 I also made two landscape photographs, one by the ordinary process, and the other by the chlorophyl process, exposing them simultaneously. Scientific American Supplement, No. 492, June 6, 1885 But they did not succeed in demonstrating the presence of starch, cellulose, or chlorophyl. Scientific American Supplement, No. 324, March 18, 1882 In this way Engelmann was able to determine the evolution of oxygen by Euglena and by chlorophyl granules. Scientific American Supplement, No. 324, March 18, 1882 |
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