Soil mass and volume affect soil‐test biological activity estimates

Varying termiticide application rate and volume affect initial soil penetration.

The initial soil penetration of Premise 75 and Termidor SC, containing imidacloprid and fipronil, respectively, were tested in laboratory columns of five different soils. Three combinations of application concentration and volume were used: double the recommended active ingredient concentration at one half the recommended volume (DR), the full concentration and volume (FR), and one half the con...

Biasing Factors for Simple Soil Ingestion Estimates in Mass Balance Studies of Soil Ingestion

Biological signalling activity measurements using mass spectrometry.

MS (mass spectrometry) techniques are rapidly evolving to high levels of performance and robustness. This is allowing the application of these methods to the interrogation of signalling networks with unprecedented depth and accuracy. In the present review we discuss how MS-based multiplex quantification of kinase activities and phosphoproteomics provide complementary means to assess biological ...

Biological activity of soil contaminated with cobalt, tin, and molybdenum

In this age of intensive industrialization and urbanization, mankind's highest concern should be to analyze the effect of all metals accumulating in the environment, both those considered toxic and trace elements. With this aim in mind, a unique study was conducted to determine the potentially negative impact of Sn(2+), Co(2+), and Mo(5+) in optimal and increased doses on soil biological proper...

Volume Estimates and Rapid Mixing

Computing, or at least estimating, the volume of a body is one of the oldest questions in mathematics, studied already in Egypt and continued by Euclid and Archimedes. Here we are mostly concerned with the computational complexity of estimating volumes of convex bodies in R , with n large. The problems and results to be discussed are all rather recent, most of them less than ten years old, and ...