Carbonyl sulphide (COS) is a potential tracer of gross primary productivity (GPP), assuming a unidirectional COS flux into the vegetation that scales with GPP. However, carbonic anhydrase (CA), the enzyme that hydrolyses COS, is expected to be light independent, and thus plants without stomata should continue to take up COS in the dark. We measured net CO2 (AC ) and COS (AS ) uptake rates from ...

Abstract In this study, a multifunction polymeric adhesion promoter and anti-aging compound based on the triethanolamine salt of acrylamide acrylic acid copolymer (COS) was prepared characterized using Fourier-transform infrared spectroscopy (FTIR). The impact different COS contents tensile, adhesion, thermal properties NBR composite NBR/PET sandwich evaluated. composites containing displayed g...

Soil is a major contributor to the biosphere–atmosphere exchange of carbonyl sulfide (COS) and carbon monoxide (CO). COS is a tracer to quantify terrestrial photosynthesis based on the coupled leaf uptake of COS and CO2, but such use requires separating soil COS flux, which is unrelated to photosynthesis, from ecosystem COS uptake. For CO, soil is a significant natural sink that influences the ...

Net photosynthesis is the largest single flux in the global carbon cycle, but controls over its variability are poorly understood because there is no direct way of measuring it at the ecosystem scale. We report observations of ecosystem carbonyl sulfide (COS) and CO2 fluxes that resolve key gaps in an emerging framework for using concurrent COS and CO2 measurements to quantify terrestrial gross...

The Classroom of the Sea (COS) Project is an interactive problem-based learning environment embedded in marine science for deaf high school students to assist them in understanding and communicating scientific concepts. COS mixes a real and virtual environment for the students and teachers aboard a research vessel as they gather marine science data to address a problem. The students note the lo...

Chitosan and its oligosaccharides exhibit numerous biochemical characteristics, which includes immune enhancing, antimicrobial anti-viral properties. products have drawn much attention of both food pharmaceutical industry due to their peculiar physiochemical characteristics effectiveness in cancer therapies. Current study describes the different physiological chemical properties along with usef...

2 Classification Error Suppose that we cut off the growing process at various points over the growing processs, and we evaluate the error of the tree at that point and time. This would lead to a graph of size vs. error (where error is the probability of making a mistake). There are two error rates to be considered: • training error (i.e. fraction of mistakes made on the training set) • testing ...

Words denoting non-causative and causative change of state (COS) predicates often are morphologically related to words denoting the related state predicates, though the relationship sometimes differs for different types of states. For the state of ‘brokeness’, for example, in English the word denoting the state in (1c) is derived from the words denoting the change of state. In contrast, the wor...