Article
Biochemistry & Molecular Biology
Sergei Redondo-Lopez, Ana C. Leon, Katherine Jimenez, Karla Solano, Kinndle Blanco-Pena, Freylan Mena
Summary: The study assessed the effects of sublethal exposure to pesticide mixtures on two freshwater fish species, demonstrating that the severity of effects can vary among species within the same trophic chain, potentially impacting predator-prey relationships. This highlights the importance of considering the realism of ecological risk assessments in agricultural landscapes when evaluating the impact of pesticide pollution on biota.
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY C-TOXICOLOGY & PHARMACOLOGY
(2022)
Article
Construction & Building Technology
Jose S. Andrade Neto, Paulo R. de Matos, Angeles G. De la Torre, Carlos E. M. Campos, Sandro M. Torres, Paulo J. M. Monteiro, Ana Paula Kirchheim
Summary: This research investigated the hydration characteristics of C3S-C3A-calcium sulfate systems. The results showed that the type of C3S had the greatest impact on the sulfate balance of the systems, with Al-C3S mixtures producing more ettringite in the early stages and sodium-doped C3A mixtures depleting sulfate more quickly. Additionally, replacing gypsum with hemihydrate resulted in faster sulfate depletion.
CEMENT AND CONCRETE RESEARCH
(2022)
Article
Environmental Sciences
Ayoub Bounaga, Anwar Alsanea, Mohammed Danouche, Bruce E. Rittmann, Chen Zhou, Rachid Boulif, Youssef Zeroual, Rachid Benhida, Karim Lyamlouli
Summary: Phosphogypsum, a by-product of the phosphate industry, can be used as a substrate for sulfate-reducing bacteria to produce hydrogen sulfide. This study optimized the leaching process to achieve high biological reduction of sulfate ions and generate high sulfide concentrations. Different consortia of sulfate-reducing bacteria were isolated and enriched, and lactate was found to be the most effective electron donor. Treatment with NaOH solutions enhanced the leaching efficiency, and metagenomic analysis revealed the presence of novel sulfate-reducing bacteria using phosphogypsum as a source of sulfate ions.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Environmental
Yongdong Xu, Tingshu He, Renhe Yang, Xiaodong Ma
Summary: This study investigates the effects of simulated groundwater with different concentrations of sodium sulfate on the early performance of an alkali-free accelerator-cement-mineral admixture system. The results show that sulfate groundwater promotes the setting time and strength of the system. By using various analytical techniques, such as isothermal calorimeter, X-ray diffraction, and scanning electron microscopy, the hydration process and products of sulfate-containing groundwater were analyzed. The hydration degree of each stage was calculated, and a microscopic analysis proposed the hydration mechanism of different concentrations of sulfur-containing groundwater on cement pastes mixed with alkali-free accelerator.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Construction & Building Technology
Wei Hou, Jing Liu, Zanqun Liu, Fuqiang He, Jiahui Zhu, Yu Cui, Wu Jinyang
Summary: Incorporating metakaolin in the concrete preparation process has significant implications for reducing CO2 emissions. The formation of more ettringite when cement is blended with metakaolin during sulfate attack on concrete can either source calcium from portlandite or C-S-H gel. Understanding ettringite formation can provide insights into the real effects of sulfate attack on concrete.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Multidisciplinary Sciences
Julita Stadnicka-Michalak, Nadine Bramaz, Rene Schonenberger, Kristin Schirmer
Summary: A complementary empirical model framework was developed to predict chemical medium concentrations in different well-plate formats, focusing on chemicals' volatility and hydrophobicity. The type of plate cover and medium volume were identified as important drivers of volatile chemical loss, accurately predicted by the framework.
SCIENTIFIC REPORTS
(2021)
Article
Construction & Building Technology
Jose S. Andrade Neto, Erich D. Rodriguez, Paulo J. M. Monteiro, Angeles G. De la Torre, Ana Paula Kirchheim
Summary: This study assessed the effects of gypsum on the hydration of C3S and Al-C3S. It was found that gypsum retarded the initial hydration but enhanced the subsequent hydration due to the interaction between sulfate ions and C3S. The enhancement of C3S hydration by gypsum mainly resulted from changes in C-S-H morphology and increases in ionic strength.
CEMENT AND CONCRETE RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Abdulmajeed G. G. Almutary, Abdullah M. M. Alnuqaydan, Saleh A. A. Almatroodi, Murtaza M. M. Tambuwala
Summary: Several chemicals have been used for establishing animal models of ulcerative colitis, and DSS is the most widely used tool. This study aims to find the optimum concentration of DSS for establishing a mouse model for ulcerative colitis. The results suggest that 2.5% DSS can be used for a moderate level of colitis, and 3.5% DSS can be used for severe experimental colitis.
APPLIED SCIENCES-BASEL
(2023)
Article
Chemistry, Multidisciplinary
Shuang Zhou, Wei Qian, Zigong Ning, Xiaoshan Zhu
Summary: The study revealed that newly introduced MNPs significantly promoted the accumulation of As and enhanced its toxicity in mussels, while inhibiting the detoxifying process of As. This caused an enhanced ecotoxicity of As towards marine organisms.
Article
Environmental Sciences
Ka Yee Lam, Zhu Hao Yu, Robert Flick, Adam J. Noble, Elodie Passeport
Summary: This research investigated the uptake and transformation of triclosan by Euglena gracilis in open-water treatment wetlands. The study found that algae played a major role in the uptake and transformation of triclosan, and both light and dark conditions affected its transformation. Some transformation products showed minimal accumulation over the experimental period. The findings reveal the mechanism of safe transfer and transformation of triclosan in wetlands.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Environmental
Zuotao Zhang, Jiao Sun, Haijiao Guo, Xiaoqiang Gong, Chongyang Wang, Hui Wang
Summary: This study provides the first evidence of a pure-culture anaerobic phenanthrene-degrading sulfate-reducer, revealing the initial steps of anaerobic phenanthrene biodegradation processes with sulfate as an electron acceptor.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Engineering, Environmental
Shan Niu, Xi Chen, Ruiwen Chen, Yun Zou, ZhiZhen Zhang, Li Li, Kimberly J. Hageman, Carla Ng, Liang Dong
Summary: Chlorinated paraffins (CPs), especially short-chain CPs (SCCPs), have been frequently detected in human blood with high variation among individuals. However, the factors contributing to this variation in SCCP concentrations have not been assessed. This study measured SCCP concentrations in 57 human blood samples from individuals living in the same area in China and used a model to investigate the impacts of sociodemographic data, biotransformation rates, dietary patterns, and indoor contamination on inter-individual variability. The results showed that age, sex, body weight, and dietary composition had a minor role in explaining the variability in SCCP concentrations in human blood.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Pharmacology & Pharmacy
Natalia N. Drozd, Svetlana A. Kuznetsova, Yuriy N. Malyar, Aleksandr S. Kazachenko, Valentina S. Borovkova, Yarosvala D. Berezhnaya
Summary: Polysaccharides are crucial in plants and have various applications in medicine, construction, and the food industry. This study investigates the anticoagulant activity of sulfate-modified gel-like polysaccharides, demonstrating their potential for resistance to blood clotting.
Article
Engineering, Environmental
Wei La, Xiaokun Han, Cong-Qiang Liu, Hu Ding, Mingxuan Liu, Fusheng Sun, Siliang Li, Yunchao Lang
Summary: Coastal wetlands are an important source of methane emissions. This study investigates the factors controlling methane emissions by analyzing the pore-water geochemistry in the Beidagang wetland in Tianjin, China. The results show significant spatial and temporal variability in the geochemical profile, which is influenced by changes in sulfate concentration, temperature, and dissolved oxygen. Additionally, sulfate concentration has a strong impact on sulfate reduction pathways and methane consumption.
Article
Biochemistry & Molecular Biology
Roberta Socoowski Britto, Jefferson Patricio Nascimento, Tiago Serodre, Adelina Pinheiro Santos, Amadeu M. V. M. Soares, Clascidia Furtado, Juliane Ventura-Lima, Jose M. Monserrat, Rosa Freitas
Summary: The study investigated the effects of graphene oxide on clams in aquatic ecosystems, finding that different concentrations of graphene oxide altered the biochemical parameters of clams, and in the presence of sediment, clams mostly invested in non-enzymatic defenses.
COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY C-TOXICOLOGY & PHARMACOLOGY
(2021)