Search results

This study aims to determine the efficiency of three types of essential oils (EOs) as antioxidants on wood pulp paper samples: camphor oil, clove oil and lavender oil. Because of the detrimental influence of the oxidation process on wood pulp paper, this type of paper suffers significant disintegration.

The evaluation methodology is based on scanning electron microscope and three directions laser microscope, the hydrogen ion concentration measurement, color change measurement using the CIELAB system and infrared spectrum analysis, as well as investigating the mechanical properties of paper as represented by tensile and elongation to determine Young’s modulus values.

According to the findings, camphor was an effective antioxidant for paper samples, protecting them from the damaging effects of oxidation and the impact of artificial aging processes while also improving the mechanical properties of paper.

This paper emphasizes the concept of using environmentally friendly materials derived from EOs, owing to their ease of application, lack of environmental impact, distinctive properties, low cost and distinctive properties in both curative and preventive conservation of paper manuscripts.

This study aims to develop a way to inhibit fungal attacks on paper manuscripts, as fungi are a major deterioration factor that causes aesthetic appearance and fragility degradation using fungal inhibitors including silver nanoparticles (AgNPs) and titanium oxide nanoparticles (TiO₂NPs).

In the present study, silver nanoparticles (AgNPs) and titanium oxide nanoparticles (TiO₂NPs) doped with AgNPs (TiO₂NPs@AgNPs) were produced and combined with cellulose acetate solution before membrane production. Thus, two distinct cellulose acetate (CA) membranes were created: AgNPs-loaded CA membranes (CAAg) and TiO₂NPs@AgNPs-loaded CA membranes (CATAg). The fabricated membrane was applied to paper samples using cotton fibers containing ink or free of ink.

The findings revealed that these nanoparticles (AgNPs and TiO₂NPs@AgNPs) have a distinct shape, small size and high stability. Furthermore, once loaded onto the CA membrane, such nanoparticles might suppress fungal assault on the surface of paper samples. According to the analysis and the acquired results, the CAAg membrane was the best material to use without affecting the paper’s properties.

This paper provides a novel approach for inhibiting the fungal attacks on paper manuscripts without affecting the paper properties by using membranes from cellulose acetate loaded onto nanoparticles as inhibitors.

People are more likely to participate in work-related events that might cause positive and negative affective reactions. Prior research linked coworker friendship with incivility; however, few studies investigated negative workplace gossip. Simultaneously, linking coworker friendship with incivility through positive/negative affective responses is lacking. As such, this paper aims to examine this relationship via the dual mediation effect of positive and negative workplace gossip.

A total of 398 subordinates at family restaurants in Greater Cairo were surveyed, and data was analyzed using SmartPLS4.

Coworker friendship significantly influences coworker incivility via positive and negative workplace gossip and other underlying mechanisms.

Managers should take the initiative to decrease gossip by sharing information promptly and thoroughly and establishing effective channels for information exchange. In the case of an informal plan, restaurant managers may seek to create a welcoming and motivating corporate atmosphere and cultivate social ties among subordinates to prevent the creation of negative gossip. Restaurant managers should give victims of negative gossip timely psychological counseling.

This paper contributes to the restaurant literature on affective emotional responses to coworkers’ judgment-driven behavior from new perspectives.