Article
Agronomy
Zichang Zhang, Jingjing Cao, Tao Gu, Xia Yang, Qiong Peng, Lianyang Bai, Yongfeng Li
Summary: This study investigated the effects of growing rice with different varieties of barnyardgrass on root traits and shoot growth of rice. The results showed a significant reduction in rice grain yield when grown with barnyardgrass, accompanied by a decrease in shoot growth indices and a strong positive correlation with root traits.
Article
Environmental Sciences
E. Sas, L. M. Hennequin, A. Fremont, A. Jerbi, N. Legault, J. Lamontagne, N. Fagoaga, M. Sarrazin, J. P. Hallett, P. S. Fennell, S. Barnabe, M. Labrecque, N. J. B. Brereton, F. E. Pitre
Summary: The utilization of willow plantations for treating primary municipal wastewater has the potential to be a sustainable approach, increasing biomass and phytochemical yields, thereby enhancing economic feasibility.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Computer Science, Artificial Intelligence
Warakhom Wongchai, Thossaporn Onsree, Natthida Sukkam, Anucha Promwungkwa, Nakorn Tippayawong
Summary: Biomass is a renewable energy resource that can be substituted for fossil fuels, reducing greenhouse gas emissions. By using a machine learning algorithm, we are able to accurately estimate the aboveground biomass of fast-growing trees, providing an estimation method for tropical regions.
EXPERT SYSTEMS WITH APPLICATIONS
(2022)
Article
Environmental Sciences
Abdellatif Elghali, Mostafa Benzaazoua, Hassan Bouzahzah, Mustapha Abdelmoula, James J. Dynes, Heather E. Jamieson
Summary: When mine tailings are exposed to water and oxygen, acid mine drainage (AMD) can be generated, leading to the release of metal(oid)s into the environment. Fresh and oxidized tailings show significant differences in their physical, mineralogical, and geochemical properties, with oxidized tailings releasing large amounts of iron, sulfur, and zinc.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Geochemistry & Geophysics
Alison S. Cramer, Wendy M. Calvin, Scott W. McCoy, Ronald J. Breitmeyer, Marja Haagsma, Christopher Kratt
Summary: The study explores the use of Remotely Piloted Aerial Systems (RPASs) to map the spatial and temporal changes of potentially acid generating material (PAGM) across mine waste rock piles on abandoned mine lands. Supervised and unsupervised classification algorithms show benefits, with unsupervised methods requiring less user input. RPAS carrying a broadband multispectral sensor can be extensively applied to abandoned mine lands, promising to increase spatial and temporal coverage of accurate maps critical for environmental monitoring and reclamation efforts.
Article
Environmental Sciences
Vaishali P. Bagul, Uday S. Annapure
Summary: This study isolated fast-growing thraustochytrids from mangrove habitat and investigated the influence of seasonal variation on their fatty acid composition. The presence of high DHA-producing thraustochytrids in lower temperature seasons was confirmed, highlighting the importance of environmental temperature conditions and fatty acid composition as a dietary biomarker. Additionally, the ecological significance of thraustochytrids in DHA enrichment in the marine food web was revealed.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Environmental Sciences
Beauclair Nguegang, Vhahangwele Masindi, Titus Alfred Msagati Makudali, Memory Tekere
Summary: This study developed a hybrid approach using a nano-and-biotic system to treat acid mine drainage (AMD). The treatment process involved neutralization using MgO-nanoparticles (NPs) and polishing the water using a series of wetlands. The results showed that the system effectively removed metals and inorganic contaminants, and the product water met the standards for effluent discharge, demonstrating the potential for sustainable mine water management.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2022)
Article
Environmental Sciences
Jeff B. Langman, Ethan Gaddy, Timothy E. Link, Jan Boll, Bradley Barnett, Morgan Hill
Summary: The infiltration of precipitation into the lead-zinc-silver Bunker Hill Mine has led to the oxidation of pyrite and the production of acidic waters that are discharged from the mine portal. Through a university-industry partnership, the sources, flowpaths, and travel times of the mine water were traced to identify areas for infiltration reduction. The results indicate that creek water infiltrates quickly through modified pathways, causing the largest amount of acidic water in the upper levels of the mine. The slower and natural pathways, associated with faults, fractures, and bedding planes, produce mostly neutral waters with the source waters originating at higher elevations.
Article
Geochemistry & Geophysics
Gabrielle Dublet-Adli, Thomas Pabst, Gudny Okkenhaug, Christian Saetre, Anna M. Varheim, Mari K. Tvedten, Samuel K. Gelena, Andreas B. Smebye, Marianne Kvennas, Gijs D. Breedveld
Summary: The study found that using pre-oxidized tailings as a moisture retention layer in cover systems can effectively reduce Cu concentrations. However, despite some improvements, the issue of acid drainage continued to persist in the leachate water.
Article
Geochemistry & Geophysics
Sandra Fernandez-Landero, Juan Carlos Fernandez-Caliani, Maria Inmaculada Giraldez, Emilio Morales, Cinta Barba-Brioso, Isabel Gonzalez
Summary: Mineralogical analysis and leaching tests were conducted to assess acid generation and trace element release from heavily contaminated mine waste soils. Results showed high net acid generation values, mainly attributed to sulfidic acidity and acidity retained in jarosite. Significant amounts of As and toxic heavy metals were found, particularly in slag-contaminated soil. Copper, Zn, and Pb were the most abundant metals in the acid leach solutions. Although total trace element contents in soil were high, the mobile fraction was limited. Acid soil drainage is a secondary source of acid and heavy metals, emphasizing the need for effective land reclamation programs to reduce acidity and metal mobility to sustainable levels.
Article
Agricultural Engineering
Geetanjali Yadav, Manigandan Sekar, Sang-Hyoun Kim, V. Edwin Geo, Shashi Kant Bhatia, Jamal S. M. Sabir, Nguyen Thuy Lan Chi, Kathirvel Brindhadevi, Arivalagan Pugazhendhi
Summary: This research article investigated lipid accumulation in four fast growing, filamentous cyanobacterial strains, finding that certain strains had higher lipid content under optimal light conditions. Additionally, the effects of different temperatures and pH on lipid content varied among the strains.
BIORESOURCE TECHNOLOGY
(2021)
Article
Multidisciplinary Sciences
Joseph Moturi, Kwang Yeol Kim, Abdolreza Hosseindoust, Jun Hyung Lee, Biao Xuan, Jongbin Park, Eun Bae Kim, Jin Soo Kim, Byung Jo Chae
Summary: The study determined the effects of early administration of Lactobacillus salivarius on growth performance, gut morphology, and gut microbiota in suckling piglets. Results showed that LS supplementation, particularly from high BMI pigs, could improve intestinal villus height in the duodenum, jejunum, and ileum, suggesting potential benefits for neonatal piglets.
SCIENTIFIC REPORTS
(2021)
Article
Agriculture, Dairy & Animal Science
D. H. Tran, J. Th Schonewille, C. Pukkung, S. Khempaka
Summary: Literature data suggest that feed intake is sensitive to the dietary Lys content, particularly in fast-growing birds. A study with Cobb 500 and Thai native crossbreed birds showed that low Lys content significantly decreased feed intake in fast-growing broilers but not in slow-growing broilers. The efficiency of protein and Lys accretion varies between fast-growing and slow-growing broilers in response to dietary Lys content.
Article
Forestry
Andrzej Antczak, Jan Szadkowski, Dominika Szadkowska, Janusz Zawadzki
Summary: The study compared the effects of liquid hot water and steam explosion pretreatment methods on fast-growing Populus trichocarpa wood, finding that pretreatment significantly improved enzymatic digestibility and chemical composition of the wood, particularly affecting the content of hemicelluloses.
WOOD SCIENCE AND TECHNOLOGY
(2022)
Article
Engineering, Geological
Elodie Lieber, Isabelle Demers, Thomas Pabst, Emilie Bresson
Summary: This study evaluated three approaches to simulate climate change and compared the impact on reclamation performance. Results showed that the projected impact of climate change varied depending on the approach used, but a well-designed monolayer cover with elevated water table remained efficient in the long term.
CANADIAN GEOTECHNICAL JOURNAL
(2022)