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Planted Citrus Regulates the Community and Networks of -Harboring Bacteria to Drive Phosphorus Availability Between Karst and Non-Karst Soils.
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Changsha Comprehensive Survey Center of Natural Resources, China Geological Survey, Changsha 410600, China.
The phosphorus (P) availability in soils is influenced by microbes, particularly those containing the gene responsible for phosphate solubilization. The present study investigated the community structure, diversity, and co-occurrence networks of -harboring bacteria in karst and non-karst citrus orchard soils across a planting duration gradient, natural forests, and abandoned land, as well as the soil total P (TP) and available P (AP) contents and enzyme activities. The soil AP contents were lower in the karst regions than in the non-karst regions, while the soil organic carbon (C; SOC), exchangeable calcium, and microbial biomass nitrogen (N) contents; alkaline phosphatase (ALP) and β-Glucuronidase activities; and pH had the opposite trends.
View Article and Find Full Text PDFEffect of Warming on Soil Fungal Community Along Altitude Gradients in a Subalpine Meadow.
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School of Resources and Environmental Engineering, Anhui University, Hefei 230601, China.
The subalpine grassland ecosystem is sensitive to climatic changes. Previous studies investigated the effects of warming on grassland ecosystems at a single altitude, with little information about the response of subalpine meadows to warming along altitude gradients. This study aimed to evaluate the effects of warming on aboveground grass, belowground soil properties, and fungal community along altitude gradients in the subalpine meadow of Mount Wutai using the high-throughput sequencing method.
View Article and Find Full Text PDFInfluence of Heat Treatment on the Microstructure and Mechanical Properties of Pure Copper Components Fabricated via Micro-Laser Powder Bed Fusion.
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Department of Mechanical and Automation Engineering, The Chinese University of Hong Kong, Hong Kong, China.
Pure copper (Cu) is widely used across numerous industries owing to its exceptional thermal and electrical conductivity. Additive manufacturing has facilitated the rapid and cost-effective prototyping of Cu components. Laser powder bed fusion (LPBF) has demonstrated the capability to produce intricate Cu components.
View Article and Find Full Text PDFEffect of Temperature Gradient and Cooling Rate on the Solidification of Iron: A Molecular Dynamics Study.
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School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China.
In this study, molecular dynamics (MD) simulations were employed to compare the effects of different solidification conditions on the solidification behaviour, stress distribution, and degree of crystallization of iron. The results indicate significant differences in nucleation and microstructural evolution between the two solidification methods. In the homogeneous temperature field, the solidification of iron is characterized by instantaneous nucleation.
View Article and Find Full Text PDFDevelopment of Pyramidal Microwells for Enhanced Cell Spheroid Formation in a Cell-on-Chip Microfluidic System for Cardiac Differentiation of Mouse Embryonic Stem Cells.
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December 2024
Department of Mechanical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand.
Three-dimensional (3D) tissue culture models provide in vivo-like conditions for studying cell physiology. This study aimed to examine the efficiency of pyramidal microwell geometries in microfluidic devices on spheroid formation, cell growth, viability, and differentiation in mouse embryonic stem cells (mESCs). The static culture using the hanging drop (HD) method served as a control.
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