ORCID Profile
0000-0003-4352-558X
Current Organisations
Shenzhen University
,
University of Illinois System
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Publisher: American Chemical Society (ACS)
Date: 18-07-2023
Publisher: American Chemical Society (ACS)
Date: 14-05-2021
Publisher: Elsevier BV
Date: 04-2020
DOI: 10.1016/J.CHEMOSPHERE.2019.125634
Abstract: Road deposited sediments (RDS) is the key carrier of pollutants in the urban road stormwater processes and hence has been seen as an important pollutant source of urban road stormwater. Although many research studies have focused on RDS and pollutants attached to RDS, the investigation on RDS toxicity is very limited. Toxicity test can permit an overall assessment on whether the RDS polluted stormwater can be safely reused. This paper used two living organisms, namely Chinese hamster ovary (CHO) cells, (mammalian cells to indicate human health related toxicity) and Chlorella Pyrenoidosa (algae to indicate ecological health related toxicity) to test RDS toxicity by using an innovative "equivalent toxicity area (ETA)" approach. The outcomes showed that mammalian cells are more sensitive than algae in terms of RDS toxicity. Pb, Cd and Cr primarily contributed to mammalian cell-based toxicity while Zn, Ni, Cu and TOC are primarily toxic to algae. It is also found that road site characteristics such as land uses exerted an important influence on RDS toxicity. Commercial areas tended to generate RDS with higher human health risk related toxicity while industrial areas had a potential to produce RDS with high ecological health risk related toxicity. The research outcomes also showed that solely focusing on pollutant themselves on RDS can not accurately indicate RDS pollution. An approach to considering both pollutant loads and toxicity is preferred. These results were expected to provide a useful insight to enhancing effectiveness of RDS polluted urban road stormwater management and ensuring their reuse safety.
Publisher: Elsevier BV
Date: 11-2018
DOI: 10.1016/J.ECOENV.2018.08.031
Abstract: Benzene series compounds (BTEX) are toxic pollutants primarily generated by traffic activities in an urban environment. BTEX pollutants can be deposited (build-up) on urban road surfaces during dry periods and then washed-off into stormwater runoff. Since BTEX pollutants can pose high human health risks, they can undermine stormwater reuse safety after they enter stormwater runoff. In this study, the BTEX pollutants build-up loads on urban road surfaces were investigated in Shenzhen, China. An artificial neural network (ANN) approach and two conventional regression modelling approaches were compared in terms of estimating BTEX build-up loads based on land use related parameters. It was found that the ANN approach had a better performance than the two regression modelling approaches. Additionally, the spatial distribution maps and human health risk map of BTEX pollutants build-up created using the ANN approach can provide a robust visualization platform to identify 'hot-spot' areas. These areas have a potential to generate highly BTEX polluted stormwater runoff and hence be inappropriate to be reused. These research outcomes are expected to provide an effective approach for ensuring stormwater reuse safety and a useful guidance for decision-making for stormwater management and water environment protection related urban planning.
Publisher: Center for Open Science
Date: 03-08-2023
Abstract: The association between cognitive training and exercise motivation remains unclear, particularly when the training is not explicitly focused on modifying goal content. Our study investigated the impact of such training on exercise-related decision-making skills among a s le of low-active adults (N = 233 Mage = 46.7 years) who completed the Exercise Motivation Inventory-2 (EMI2) at baseline and one-month follow-up. Latent profile analyses (LPA) were used to identify participants’ motivational profiles at each time point, and longitudinal tests of profile similarity and latent transition analyses (LTA) assessed the replicability of these profiles and the stability of participants’ profile membership over time. Our results revealed four profiles, which were replicated over time: Weakly Motivated, Moderately Motivated with Fitness Orientation, Moderately Motivated with Psychological Well-being Orientation, and Strongly Motivated. Membership to these profiles was not influenced by participants demographic characteristics, and only minimally by baseline Fitbit steps and cardiorespiratory fitness. The first two profiles displayed fewer months (over a period of 12 months post-intervention) meeting physical activity guidelines, whereas the latter two showed higher levels of adherence. The Strongly Motivated profile was the least stable but most influenced by the cognitive training intervention, whereas the Moderately Motivated with Fitness Orientation was more stable but similarly influenced by the intervention. These findings highlight the potential of a multimodal cognitive training in influencing exercise motivation and behavior, providing practical implications for tailoring interventions to specific motivational profiles. Future research should investigate the specific types of cognitive training most effective for enhancing exercise motivation and adherence.
Publisher: Elsevier BV
Date: 09-2019
DOI: 10.1016/J.ECOENV.2019.05.025
Abstract: Organic pollutants attached on road deposited sediments (RDS) during dry days can be washed-off into stormwater runoff during rainfall events, undermining stormwater reuse safety. Previous research studies commonly utilized in idual pollutant groups and their quantity to evaluate the hazard effect of pollutants attached to RDS in terms of stormwater reuse. Since many types of organic pollutants are present together rather than in idually, conventional approaches might not permit a comprehensive understanding of how appropriately the RDS polluted stormwater can be reused. This study undertook a toxicity test of organic pollutants attached to RDS using Chinese hamster ovary cells (CHO), testing a hypothesis that solely focusing on in idual pollutant groups are not adequate to represent hazard effects of resulting stormwater and hence their adequacy for reuse. It is noted that comparative toxicity of RDS is not strongly related to total solids (commonly seen as the key carrier of pollutants) and chemical oxygen demand (COD, representing organic matters). Additionally, the comparison results of spatial distributions of toxicity (in this study) and in idual pollutants in previous studies did not show a similar trend. These results imply that toxicity should be also used to indicate how stormwater can be safely reused while solely investigating in idual pollutants can not adequately show a comprehensive hazard effect in terms of ensuring stormwater reuse safety. Based on study outcomes, a new assessment approach considering both pollutant and toxicity were proposed. This will assist on effective stormwater reuse and ensuring their reuse safety.
Location: United States of America
Location: United States of America
No related grants have been discovered for Mengting Yang.