IT has been proved by several workers by means of pure culture experiments that fixation of atmospheric nitrogen may take place by the activity of some algæ, specially members of the group ...

MANY different theories on nitrogen fixation by Azotobacter cells have been presented, among them the proposition of Wilson and Burris 1 that the nitrogen molecules, which are absorbed and take ...

Nafziger explained that it is generally estimated that in soils such as those in Illinois, nitrogen fixation provides 50 to 60 percent of the nitrogen needed by the soybean crop. A small amount of ...

Scientific American is part of Springer Nature, which owns or has commercial relations with thousands of scientific publications (many of them can be found at www ...

Institute of Environmental Engineering, School of Metallurgy and Environment, Central South University, Changsha 410083, P.R. China ...

Corn requires a lot of nitrogen, approximately 1.2 pounds of it for every bushel of corn produced. That means that a 200-bushels-per-acre harvest will require 240 pounds of nitrogen per acre.

Human activities, such as agriculture, have dramatically increased nitrogen inputs into coastal seas. Microorganisms remove much of this human-derived nitrogen in coastal sands through a process ...

Thus, this circulation of carbon is known as the slow carbon cycle. Similar to carbon, nitrogen is a necessary component of biological molecules. Some of these molecules include amino acids and ...

While the bill doesn't specifically name methods like firing squad, hanging, or nitrogen gas, it allows for their use if lethal injection drugs become unavailable. As Gov. Ron DeSantis ramps up ...

You are free to share (copy and redistribute) this article in any medium or format within the parameters below: Creative Commons (CC): This is a Creative Commons ...

Wires and pins are often used with other types of internal fixation, but they can also be used alone. Sometimes, they're the only fixation used to fix small bones, such as those in the hands.