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Copyright of Comunicação Pública is the property of Escola Superior de Comunicacao Social and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Comunicação Pública is the property of Escola Superior de Comunicacao Social and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Ethylene oxidation by TiO 2 photocatalysis was studied in a mili-photoreactor (NETmix), as a potential clean postharvest technology to scavenge ethylene from fruit. The NETmix photoreactor comprises a stainless steel slab imprinted with a network of cylindrical chambers interconnected by prismatic channels, sealed by a UVA transparent borosilicate slab (BS), and a UVA LED plate paced above the reactor window. A thin film of the photocatalyst was immobilized in the NETmix network or on the side of the borosilicate slab in contact with the ethylene gas stream. Ethylene oxidation in single-pass mode (continuous operation) was evaluated as a function of TiO 2 crystallinity, TiO 2 loading, radiant power, illumination mechanism, feed stream composition (ethylene and water concentration), and flow rate. The catalyst loading and deposition surface, and relative humidity (RH) of the feed stream strongly affected the ethylene conversion, mineralization, and reaction rate. Even under severe conditions (RH = 25% and Q feed = 571 cm3 min−1 for the back side illumination), the NETmix removed at least 0.11 μmol ethylene min−1. The high efficiency of the photocatalytic NETmix reactor allows the removal of ethylene from the storage system at the beginning of fruit ripening, the period of the highest gas production, enabling it to be used as a promising technology in controlling fruit ripening. [Display omitted] • Ethylene was oxidized using TiO 2 immobilized in a mili-photoreactor. • The illumination system and water content strongly affected the reaction efficiency. • At least 0.11 μmol min−1 of the ethylene was degraded under the worst condition. • NETmix-TiO 2 showed potential application for fruit ripening control. [ABSTRACT FROM AUTHOR]

Copyright of Comunicação Pública is the property of Escola Superior de Comunicacao Social and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Colombiana de Gastroenterología is the property of Asociacion Colombiana de Gastroenterologia and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The adverse effects of excessive and problematic social networking sites (SNSs) use are well described in academic and practitioner literature. However, it remains unclear how these problematic uses arise. By exploring the phenomenon of SNS addiction, this paper identifies how the problematic use of an SNS emerges and develops. We hypothesize that the flow state induced by using SNSs and the sense of belonging are two mediators of the influence of the user's motivations on the development of an SNS addiction. We used variance-based structural equation modeling (PLS-SEM) to analyze data collected from a sample of TikTok SNS users and test the research hypotheses. The results suggest that different addiction mechanisms are associated with different motivations to continue using the social network. This research brings new insights to the social media addiction literature by identifying one new alternative addiction mechanism – via the sense of belonging – by which addiction to social networks can develop. Such knowledge may help inform social networking providers and organizations of social media users' engagement triggers. It also helps inform public health officials on how to help users overcome addictive behaviors on social media. • SNS addiction occurs through two different mechanisms depending on the user's motivations fulfilled by the SNS. • The need for escapism can lead to addiction through the application-induced flow state and/or the sense of belonging state. • Social interaction needs can lead to addiction exclusively through a feeling of belonging to the TikTok community. • The gratification sought by the user is paramount in determining the source of addiction and respective solutions. [ABSTRACT FROM AUTHOR]

The article discusses a study which was aimed to compare the behavior of key diagnostic and prognostic variables of cardiopulmonary exercise testing (CPX) testing between two groups; patients with heart with reduced ejection fraction of (HfrEF) and those with HFnEF. The study evaluated 36 patients with heart failure and concluded that the HFnEF group presented higher levels of blood pressure at rest.