ScienceJohn Michels (Journalist) 1950 |
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Стр. 112
... SOIL BY VARIOUS LEACHING REAGENTS 5 g Soil with an activity of 780 counts per minute leached with 100 ml of each solution . Radioactivity data from Geiger counter . Normality of acid opinion the successful leaching agents were those ...
... SOIL BY VARIOUS LEACHING REAGENTS 5 g Soil with an activity of 780 counts per minute leached with 100 ml of each solution . Radioactivity data from Geiger counter . Normality of acid opinion the successful leaching agents were those ...
Стр. 247
... soil with a cover tailor - made to its protective requirements . RESULTS OF SOIL EROSION Splash and scour erosion processes damage the land in at least four important ways . They carve gullies , they remove sheets of surface soil , they ...
... soil with a cover tailor - made to its protective requirements . RESULTS OF SOIL EROSION Splash and scour erosion processes damage the land in at least four important ways . They carve gullies , they remove sheets of surface soil , they ...
Стр. 248
... soil's fertility elements and de- stroys the land's water - holding capacity . Soil Conservation Service photo . injurious to sandy lands than sheet erosion , which re- moves the whole soil . Some fields have been damaged plow layer is ...
... soil's fertility elements and de- stroys the land's water - holding capacity . Soil Conservation Service photo . injurious to sandy lands than sheet erosion , which re- moves the whole soil . Some fields have been damaged plow layer is ...
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AAAS absorption activity albumin Amer American animals applied Association atherosclerosis atomic awarded Beer-Lambert laws beta particles bevatron biol biological blood cells chairman Chem chemical chemistry Chicago cholesterol cloud chamber College Committee compounds concentration curves cytoplasm Department director effect electron emulsion energy enzyme experimental experiments fellowships field genes genetics growth Health indicate injected Institute internal wave investigation Laboratory Lambert's law larvae layer material measurements Medical Medicine meeting ment mesons metabolism method mice molecular molecules National nuclear nuclei nucleic acid observed obtained organic paper particles penicillin phosphorus Phys physical plants plates present president problems produced professor protein prothrombin protons radiation rats reaction recent reported rhodopsin sample School Science scientific scientists serum session Society soil solution specific temperature theory tion tissue Univer University values versity vitamin volume Washington WNCD York York City