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Distinct seasonality of nutrients in twigs and leaves of temperate trees.
Tree Physiol
January 2025
School of Natural Resources, Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China.
Seasonal variations of nutrients in different organs are an essential strategy for temperate trees to maintain growth and function. The seasonal variations and variability (i.e.
View Article and Find Full Text PDFA new in situ fracturing-enhanced oxidative remediation for various low-permeability phenanthrene-contaminated soils: Oxidation effectiveness and kinetics of potassium permanganate.
J Hazard Mater
January 2025
Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China; Key Laboratory of Geotechnical and Underground Engineering of the Ministry of Education, Shanghai 200092, China.
A new in situ fracturing-enhanced oxidative remediation approach was recommended in this study to achieve rapid and efficient remediation of low-permeability contaminated sites. The objective of this study was to evaluate the effects of permeability and potassium permanganate (KMnO) concentration on the oxidation effectiveness and kinetics of KMnO in phenanthrene (PHE)-contaminated soil through rigid-wall hydraulic conductivity tests and a series of laboratory experiments. The results indicate that for various low-permeability contaminated soils, there was a critical KMnO concentration to significantly reduce the remediation time and a critical Darcy velocity to meet remediation goals.
View Article and Find Full Text PDFBioactivities of secondary metabolites of two actinomycetes Streptomyces parvulus GloL3, and Streptomyces lienomycini SK5, endophytes of two Indian medicinal herbs- Globba marantina L. and Selaginella kraussiana (Kunze) A. Braun.
Braz J Microbiol
January 2025
Microbiology and Microbial Biotechnology Laboratory, Department of Botany and Forestry, Vidyasagar University, 721102, Midnapore, West Bengal, India.
Endophytic actinomycetes are potential sources of novel pharmaceutically active metabolites, significantly advancing natural product research. In the present investigation, secondary metabolites from two endophytic actinomycetes, Streptomyces parvulus GloL3, and Streptomyces lienomycini SK5, isolated from medicinal plant taxa, Globba marantina, and Selaginella kraussiana, exhibited broad-spectrum bioactivity. Ethyl Acetate (EA) extract of SK5 showed antimicrobial activity against nine human pathogens, including Methicillin-resistant Staphylococcus aureus (MRSA), Candida tropicalis, and C.
View Article and Find Full Text PDFThe dissolution/diffusion process of solid in a liquid is a kind of widespread physical phenomenon. Parameters involved in this process include the dissolution rate (), dissolution rate constant (), and diffusion coefficient (), whose accurate measurement is particularly important in fields such as biopharmaceuticals, materials science, agriculture, etc. However, the commonly used measurement methods at present cannot obtain these parameters simultaneously.
View Article and Find Full Text PDFEffective doses received by the gastrointestinal tract compartments of adults due to food intake in Egypt.
Sci Rep
January 2025
Faculty of Computer and Information, South Valley University, Qena, 83523, Egypt.
Ra, Th, and K levels in various foods frequently consumed by Egyptians were determined using a gamma-ray spectrometer based on the germanium detector (HPGe). Activity concentrations of Ra, Th, and K were in the range of < 0.10 to 0.
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