original article   extended exposure to noise can cause permanent hearing damage. this study aimed to determine the incidence time of hearing loss and its effective factors in workers exposed to noise. this retrospective cohort study, was conducted on a total of 273 workers in various sectors of kerman copper by-industries co. their hearing status and the incidence of hearing loss (hearing thre...

Nanocrystalline Copper Nanostructures In article 2205302, Maxence Menétrey and co-workers present a novel approach for microstructure control in nanopillars synthesized by electrohydrodynamic redox 3D printing. Variations the deposition voltage allow on-the-fly grain size modulation additively manufactured nanostructures.

Abstract Invited for the cover of this issue is Kimihisa Yamamoto and co‐workers at Tokyo Institute Technology International Christian University. The image depicts enhanced reactivity copper oxide subnanoparticles under low‐temperature conditions. Read full text article 10.1002/chem.202100508 .

An extensive literature has developed in recent years in the field of chelate compounds with special reference to their antimicrobial properties. Thus, for example, the copper chelate of oxine (8-hydroxyquinoline) has been the subject of numerous investigations (Hollingshead, 1956). Thiosemicarbazones (TSC), which are compounds capable of forming chelates, have been investigated by Domagk (1950...

The r81e of copper as a component of such enzymes as ascorbic acid oxidase and polyphenol oxidase has been well established (1, 2). When plant tissues were made copper-deficient, the activities of these particular oxidases were significantly diminished, while other enzymes were unchanged or increased in concentration, resulting in an over-all change in enzyme pattern characteristic of the metal...

BACKGROUND Program effectiveness is influenced by the degree and quality of implementation, thus requiring careful examination of delivery processes and how the program is or is not being implemented as intended. Implementation fidelity is defined by adherence to intervention design, exposure or dose, quality of delivery, and participant responsiveness. As part of the process evaluation (PE) of...

The surfaces of fresh and tarnished (through exposure to the atmosphere) bornite have been studied by measurement of reflectance and quantitative colour parameters in the visible region, X-ray photoelectron and Auger electron spectroscopy, and conversion electron M6ssbauer spectroscopy. The results of these studies, in combination with those of previous workers, indicate that a surface coating ...

This study was undertaken to assess the socio-economic impact of producing export oriented agricultural crops on the livelihoods of the farmers, in eastern Ethiopia. A random sample of 305 farmers was studied. Comparisons were made between producers and non-producers using the Ztest and regression analysis. It was found that producers of export oriented crops are better off than the non-produce...

OBJECTIVE The objective of this study was to examine the predictive relationships between employee health risk factors (HRFs) and workers' compensation (WC) claim occurrence and costs. METHODS Logistic regression and generalised linear models were used to estimate the predictive association between HRFs and claim occurrence and cost among a cohort of 16 926 employees from 314 large, medium an...

The mildew of the vineyards is prevented by the use of sprays with a solution of copper sulphate neutralized with hydrated lime. The inhalation of this solution while spraying may give rise to predominantly interstitial pulmonary lesions which may lead to respiratory insufficiency. These lesions, which were experimentally reproduced in guinea-pigs, have a well-defined histological picture chara...