The phrase "abundant by" is not correct and does not convey a clear meaning in written English.
It is unclear in what context it could be used, as it does not form a standard expression or idiom.
Example: "The resources were abundant by the river" does not make sense as it stands.
Alternatives: "plentiful due to" or "rich in".
As regards the nitrogen metabolism, the 2D-DIGE analysis did not confirm the differential abundance of the nitrogenase, but did however show that glutamine synthetase was more abundant (by an average factor of +1.72) at lower pH.
More abundant, by far, are magazines, pamphlets and television programmes given over to food.
The results indicate that molecular ions have roughly the same energy distribution as the O+ ions, with maximum differential flux occurring below 400 eV, but are far less abundant, by two orders of magnitude.
Microbes were abundant by ~3,500 Ma ago and surely adapted to live in subaerial conditions in coastal and inland environments, as they do today.
They date from perhaps as far back as 80,000 years ago and are abundant by 30,000 years ago (Bouzouggar et al. 2007; White 2003).
In a further study by the same group (Portilla-Rivera et al. 2007b) utilized distilled grape marc another abundant by product of wine industry in Spain which consists of complex ligoncellulosic material.
Wheat germ is an abundant by-product of the milling industry, it has excellent nutritional qualities and high tocopherols content.
The most abundant by-products were pentene and propene, though these were not formed in equimolar amounts as could be expected.
Spent coffee grounds (SCG) are an abundant by-product of the coffee industry with a complex composition that makes them a promising feedstock for a biorefinery.
Glycerol is an abundant by-product during biodiesel production and additionally has several assets compared to sugars when used as a carbon source for growing microorganisms in the context of biotechnological applications.
Sugarcane bagasse is an abundant by-product of sugar industry and was tested as support and carbon source for production of inulinase (2,1-β-d-fructanohydrolase, E.C. 3.2.1.7) from Kluyveromyces marxianus NRRL Y-7571 by solid-state fermentation.
