Search results for "creo"
showing 4 items of 34 documents
John H. McWhorter, Linguistic simplicity and complexity: Why do languages undress? Language contact and bilingualism, Vol. 1. Berlin: De Gruyter Mout…
2013
Comparison of oxidoreductive enzyme activities in three coal tar creosote-contaminated soils
2019
This study used laboratory experiments to compare the effects of coal tar creosote on the activity of oxidoreductive enzymes in sandy loam, loamy sand and sandy clay loam soils. Different amounts of coal tar creosote were added to soil samples as follows: 0 (control), 2, 10 or 50 g kg–1 dry matter. The activity of soil dehydrogenases (DHAs), o-diphenol oxidase (o-DPO), catalase (CAT), nitrate reductase (NR) and peroxidases (POX) was determined. Contamination of soil with coal tar creosote affected oxidoreductase activity. Oxidoreductive enzyme activity following soil contamination with coal tar creosote was in the following order: DHAs > CAT > NR > POX > o-DPO in…
VELENI ED ALCHIMIE NEI MATERIALI DELL’EDILIZIA PRE INDUSTRIALE
2019
Since at least two decades, a renewed sensitivity to biocompatibility and the consequent diffusion of eco-certified building products have led to the attention of designers and operators on the issue of the healthness of construction materials. Although the application of strict protocols guarantees for new constructions very high levels of healthiness for both construction workers and users who come into direct contact with building materials and components, the issue for the characterization of potentially hazardous materials arises in many case for historical buildings. In addition to the well-known asbestos problem, there are new worrying signs deriving from the ascertainment in the inc…
Combined effect of low-molecular-weight organic acids and creosote on phosphatase activities in sandy soil
2018
This paper assesses the impact of creosote and low-molecular-weight organic acids (LMWOAs) on the activity of acid phosphomonoesterase, alkaline phosphomonoesterase, phosphotriesterase, and inorganic pyrophosphatase in soil. The experiment was carried out on loamy sand samples with organic carbon content of 8.71 g · kg -1 , with the following variable factors: dosages of creosote: 0, 0.5%, and 2.5%; type of LMWOAs: oxalic acid, tartaric acid, and citric acid in the amount of 50 mmol · kg -1 of soil; days of experiment: 1, 7, 14, 28, 56, 112. Obtained results showed that contamination with creosote caused decrease in the activity of soil phosphatases. The observed effect did not always incre…