Selenium nanoparticles induce coumarin metabolism and essential oil production in Trachyspermum ammi under future climate CO conditions.

Research on nanoparticles (NPs) and future elevated CO (eCO) is extensive, but the effects of SeNPs on plant growth and secondary metabolism under eCO remain uncertain. In this study, we explored the impact of SeNPs and/or eCO on the growth, physiology, chemical composition (primary metabolites, coumarins, and essential oils), and antioxidant capacity of Trachyspermum (T.) ammi.

Synergistic effect of carbon nanoparticles with mild salinity for improving chemical composition and antioxidant activities of radish sprouts.

The demand for healthy foods with high functional value has progressively increased. Carbon nanoparticles (CNPs) have a promising application in agriculture including the enhancement of plant growth. However, there are few studies on the interactive effects of CNPs and mild salinity on radish seed sprouting.

Evaluation of environmental and biological monitoring methods for toluene exposure assessment in paint industry.

The aim of this study was to assess the exposure to Toluene in paint industry and to evaluate the environmental and biological monitoring techniques for the assessment of occupational exposure to this aromatic hydrocarbon. In this study, personal active and passive air sampling for toluene measurements, blood and urine sampling respectively for B-Tol and HA or U-Tol analyses for eight workers from two paint and thinner production factories were collected during four successive working days. Correlations were analyzed between biological indicators and environmental toluene exposure levels.

CO Enrichment Differentially Upregulated Sugar, Proline, and Polyamine Metabolism in Young and Old Leaves of Wheat and Sorghum to Mitigate Indium Oxide Nanoparticles Toxicity.

Soil contamination with indium oxide nanoparticles (InO-NPs) is a challenge for plant growth and productivity. Despite InO-NPs toxicity, their effects on plant growth and metabolism are largely unknown, particularly under future climate CO (eCO). Therefore, the InO-NPs toxicity and stress mitigating impact of eCO in the young and old leaves of C3 (wheat) and C4 (sorghum) plants were investigated.

Elevated CO Differentially Mitigated Oxidative Stress Induced by Indium Oxide Nanoparticles in Young and Old Leaves of C3 and C4 Crops.

Soil contamination with indium (In) oxide nanoparticles (InO-NPs) threatens plant growth and development. However, their toxicity in plants under ambient (aCO) and elevated (eCO) conditions is scarcely studied. To this end, this study was conducted to investigate InO-NPs toxicity in the young and old leaves of C3 (barley) and C4 (maize) plants and to understand the mechanisms underlying the stress mitigating impact of eCO.

Effect of Elevated CO on Seed Yield, Essential Oil Metabolism, Nutritive Value, and Biological Activity of L. Accessions at Different Seed Maturity Stages.

Besides the lack of studies regarding applying elevated CO (eCO) as a strategy to improve the chemical composition of anise ( L.) seeds, studies on its interaction with seed developmental stages and origin are very limited. The seed yield, chemical composition, and biological activity of 6 aniseed accessions (Egypt, Tunisia, Syria, Turkey, Yemen, and Morocco) were investigated during three developmental stages (immature, premature, and mature) under control and elevated CO conditions.

Occupational exposure and respiratory health of workers at small scale industries.

Certain occupations like welding, painting, and vehicle repairing are associated with regular exposure to dust, exhausts, fuels, fumes, PM, and vapors of welding, solvents, and paint. Many studies have proved a reduction in lung functions due to exposure to these agents. The present study aims to assess and compare respiratory symptoms and pulmonary functions among exposed and non-exposed persons as well as suggests controls respectively.

Assessment of personal protective equipment use and occupational exposures in small industries in Jeddah: Health implications for workers.

Small-scale industries account for a large proportion of jobs and play a vital role in most countries' economic growth and prosperity. Due to the very low use of personal protective equipment (PPEs), employees are exposed to numerous physical, chemical, and accidental hazards in small-scale industries. PPEs are very effective in minimizing occupational injuries, accidents, and other hazards which otherwise result in substantial manpower and financial losses.

Evaluation of full-facepiece respirator fit on fire fighters in the municipality of Jeddah, Saudi Arabia.

The purpose of this study was to assess the effect of personal variables on the fit of the respirators used by firefighters and workers in highly polluted environments. However, resistance from many plants managers was met to conduct the study on their workers. Therefore, we were forced to limit the study on firefighters who were found very cooperative.

Total fume and metal concentrations during welding in selected factories in Jeddah, Saudi Arabia.

Welding is a major industrial process used for joining metals. Occupational exposure to welding fumes is a serious occupational health problem all over the world. The degree of risk to welder's health from fumes depends on composition, concentration, and the length of exposure.