Search

Your search keyword '"Wang, Meie"' showing total 261 results
Start Over Author "Wang, Meie"
261 results on '"Wang, Meie"'

15. Prediction of PPCPs Solid-Liquid Partition Coefficient Based on Machine Learning.

Author

Zhang Ziheng, Wang Meie, Ma Wankai, and Chen Weiping

Subjects
HYGIENE products, RANDOM forest algorithms, MOLECULES, SEDIMENT sampling, ENVIRONMENTAL risk
Abstract

In recent years, increasing significance has been attached to pharmaceuticals and personal care products (PPCPs). Studying the solid-liquid partition coefficient (Kd) of PPCPs in solid environmental media is crucial for understanding their fate and assessing their environmental risks. However, traditional methods based on linear partitioning have limitations in terms of stability and accuracy. This study collected adsorption batch experimental data for 24 common PPCPs, including Kd, soil properties, experimental parameters, and compound molecular descriptors to construct a dataset, and employed machine learning to build a predictive model for Kd. The results indicated that the predictive performance of both Random Forest (RF) and Extreme Gradient Boosting (XGBoost) regression models was similar and superior to that of Support Vector Regression (SVR), Furthermore, as SHAP analysis revealed, the octanol-water partition coefficient (logKOW), molar refractivity (MR), molecular weight (MW), solid-liquid ratio (RATIO), and organic carbon content (OC) had the most significant impact on Kd. Application domain analysis and model validation using reported data on 12 PPCPs and 42 sediment samples from streams and rivers in Guangzhou City showed that, except for erythromycin and roxithromycin, the models constructed in this study could accurately predict the Kd values for the remaining PPCPs. Additionally, our research found that for compounds such as ciprofloxacin, ofloxacin and sulfamethazine, whose solubility significantly increases under weakly acidic and weakly alkaline conditions, the method developed in this study may underestimate the actual Kd values in weakly acidic and weakly alkaline environments. [ABSTRACT FROM AUTHOR]

Published
2024
Full Text
View/download PDF

16. Teaching Green Analytical Chemistry on the Example of Bioindication and Biomonitoring (B & B) Technologies

Author

Markert, Bernd, Kim, Eun-Shik, Fränzle, Stefan, Wünschmann, Simone, Wang, Meie, Djingova, Rumy, Aničić Urošević, Mira, Liu, Shirong, Hillman, John, Diatta, Jean-Bernard, Lahiri, Susanta, Suchara, Ivan, Szefer, Piotr, Tabors, Guntis, Rinklebe, Jörg, Loppi, Stefano, Harmens, Harry, Hooda, Peter, Wacławek, Maria, Tack, Filipe, Gorelova, Svetlana, Knox, Anna, Pacyna, Józef, Baydoun, Elias, Frontasyeva, Marina, Badran, Adnan, Lux, Alexander, De Marco, Silvia, Meers, Erik, Kłos, Andrzej, Nriagu, Jerome, He, Liang-Nian, Series Editor, Rogers, Robin D., Series Editor, Su, Dangsheng, Series Editor, Tundo, Pietro, Series Editor, Zhang, Z. Conrad, Series Editor, Płotka-Wasylka, Justyna, editor, and Namieśnik, Jacek, editor

Published
2019
Full Text
View/download PDF

25. Factors Influencing Earthworm Fauna in Parks in Megacity Beijing, China: An Application of a Synthetic and Simple Index (ESI)

Author

Xie, Tian, Li, Xuzhi, Wang, Meie, Chen, Weiping, Faber, Jack H., Xie, Tian, Li, Xuzhi, Wang, Meie, Chen, Weiping, and Faber, Jack H.

Abstract

Complicated factors in urban areas have been reported to impact the density, biomass, and diversity of earthworm fauna. Urban parks provide essential habitats for earthworm fauna. However, how earthworm fauna are impacted by park traits, such as construction age, distance to city center, visitor volumes, sizes of greenspaces/parks, and attractiveness, etc., still remains unknown. These traits are well characterized by the impacts of urbanization intensity and administration quality of parks in megacities. Therefore, 16 parks with gradients of construction ages and geographical locations in Beijing city were selected for investigation. Furthermore, an earthworm synthetic and simple index (ESI) for characterizing earthworm community has been developed to compensate for the lack of robustness by using single ecological indexes. The results showed that earthworm population density (38.6 ind/m2) and biomass (34.0 g/m2) in parks were comparable to those in other land use types in Beijing. Ecological groupings were dominated by disturbance-tolerant endogeic and deep soil-inhabiting anecic groups, and most of them were adults. The earthworm population was influenced by urbanization intensity, while the earthworm community composition, species biodiversity, and ESI were affected by administration quality of parks. The soil moisture and microbial biomass carbon were the key factors in shaping earthworm assemblages. ESI could be employed as an effective indicator in depicting character of earthworm fauna. This study highlighted the impacts of park traits on earthworms in urban parks. The variation in park traits that influence earthworm fauna was probably attributed to soil properties.

Published
2022

39. Comparative study on changes in Cd accumulation and ionome between rice and spinach: Impact of zinc ion activity

Author

Wang, Meie, Ma, Wankai, Chaney, Rufus L., Green, Carrie E., and Chen, Weiping

Abstract

Excessive Cd accumulation in rice grain has caused chronic Cd diseases in humans. In most crops, 100 times more Zn than Cd strongly inhibits Cd uptake and translocation. However, this response is not found for rice (Oryza sativaL.), which was found to have an unusual Cd uptake pattern compared with other crops, such as spinach (Spinacia oleraceaL.). Moreover, studies on shared transporters between Zn and Cd using normal solution experiments with traditional high concentrations of metal ions may result in irrelevant interactions. Therefore, we developed ethyleneglycoltetraacetate‐buffered nutrient solutions in this work. Rice and spinach seedlings were grown under calibrated low Cd2+activity and low to phytotoxic Zn2+activity levels while buffering other micronutrient cations at sufficient levels. Results showed that as rice grew with pZn2+= 8.1–5.4, root Cd and shoot Ni decreased significantly and gradually. However, shoot Cd and Mn in rice decreased slightly with the increase of solution Zn2+from deficiency to sufficiency and then increased at toxic Zn2+solution (pZn2+= 5.4). The shoot/root ratios of Cd in rice under toxic pZn2+(5.6 and 5.4 pZn2+activity) were significantly increased (p< .05). It could be concluded that rice absorption of Cd is not inhibited by co‐contaminating (toxic) Zn. For spinach, with Zn varying from pZn2+= 8.1–5.7, both shoot and root Cd substantially decreased, as did shoot Ni. This work revealed that, to understand food chain Cd risks, one needs to consider the inhibitory role of Zn in limiting Cd absorption in all crops studied except rice. Shoot Cd and Mn in rice were the lowest under sufficient external Zn2+.Shoot Cd and Mn in rice were elevated under toxic external Zn2+.Both shoot and root Cd and Mn in spinach decreased with increasing external Zn2+.Shoot Ni in both rice and spinach decreased with increasing external Zn2+.

Published
2023
Full Text
View/download PDF

42. Effects of Mn2+on Cd accumulation and ionome in rice and spinach

Author

Wang, Meie, Ma, Wankai, Chaney, Rufus L., Green, Carrie E., and Chen, Weiping

Abstract

Health risks caused by food containing Cd is a concern worldwide. Interaction between Mn and Cd has been widely studied in normal hydroponic solution with high ion activities (e.g., the study on sharing of transporter Natural Resistance–Associated Macrophage Protein 5 between Mn and Cd in rice [Oryza sativaL.]). However, interaction of Mn and Cd in crops like rice and spinach (Spinacia oleraceaL.) at field ion activity level is still unknown. Thus, an ethyleneglycoltetraacetate‐buffered solution experiment was conducted to explore the effect of Mn on the uptake and accumulation of Cd and other mineral elements in rice and spinach. In rice, antagonism of Mn and Cd was only observed in roots at deficient and toxic levels of external Mn2+. Compared with those at Mn2+sufficiency (pMn2+6.7–5.3), average root Cd levels were elevated significantly by 1.85–3.05 times at Mn2+deficiency (pMn2+8.2) but decreased by 1.57–2.59 times at Mn2+toxicity (pMn2+4.8). The antagonism between Mn and K/Mg in rice shoots might be caused by their common role in physiological processes in plants. Antagonism of Mn/Ni in spinach in this work was consistent with their shared transporters in dicots. Results about the antagonism of root Cd/Mn at Mn2+deficiency suggest that sufficiently available Mn2+is significant to reduce Cd uptake in rice under field levels of ion activity, but it was not for spinach because the change of tissue Cd was insignificant with the increase of Mn2+activity from deficiency to toxicity. Antagonism of Mn/Cd in rice roots occurs at Mn2+deficiency and toxicity.Antagonism of Mn/Mg (K) in rice shoots might be caused by their common physiological function.Antagonism of Mn/Ni in spinach corresponded to their common transporters in dicots.Sufficient Mn2+is critical to reduce Cd in rice at field level of ion activity.

Published
2022
Full Text
View/download PDF

44. Information gain in environmental monitoring through bioindi-cation and biomonitoring methods ("B & B technologies") and phytoremediation processes – with special reference to the Biological System of Chemical Elements (BSCE) under specific consideration

Author

Markert, Bernd, primary, Abdallah, Naglaa, additional, Aksoy, Ahmed, additional, Ammari, Tarek, additional, Arias, Andres, additional, Azaizeh, Hassan, additional, Badran, Adnan, additional, Baltrėnaitė, Edita, additional, Baydoun, Elias, additional, Bernstein, Nirit, additional, Canha, Nuno, additional, Chudzinska, Ewa, additional, Delakowitz, Bernd, additional, Diatta, Jean, additional, Djingova, Rumy, additional, El-Sheik, Omer, additional, Fargasova, Agata, additional, Maria Figueiredo, Ana, additional, Fränzle, Stefan, additional, Frontesyeva, Marina, additional, Ghafari, Zahra, additional, Golan, Avi, additional, Gorelova, Svetlana, additional, Greger, Maria, additional, Harmens, Harry, additional, Hillman, John, additional, Hooda, Peter, additional, Jayasekera, Ranjit, additional, Kidd, Petra, additional, Kim, Eun-Shik, additional, Loppi, Stefano, additional, Lahiri, Susanta, additional, Liu, Shirong, additional, Lux, Alexander, additional, Ma, Lena, additional, Marcovecchio, Jorge, additional, Meers, Erik, additional, Mench, Michel, additional, Michalke, Bernhard, additional, Mowafaq, Mohammed, additional, Namiesnik, Jacek, additional, Nriagu, Jerome, additional, Öztürk, Munir, additional, Pacyna, Jozef, additional, Pehkonen, Simo, additional, Renella, Giancarlo, additional, Rinklebe, Jörg, additional, Robinson, Bret, additional, Saiki, Mitiko, additional, Szefer, Piotr, additional, Tabors, Guntis, additional, Tack, Filipe, additional, Suchara, Ivan, additional, Vangronsveld, Jaco, additional, Vasconcellos, Marina, additional, Wang, Meie, additional, Waclawek, Maria, additional, Wolterbeek, Bert, additional, Wünschmann, Simone, additional, and Zechmeister, Harald, additional

Published
2020
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results