Publications by authors named "Ming-Hui Yu"
High-Energy Composite Fuels with Improved Combustion Efficiency by Using AlH Embedded with Al Particles.
ACS Appl Mater Interfaces
October 2023
Article Synopsis
- Aluminum hydride (AlH) shows promise as a replacement for aluminum in energetic materials used in solid propellants, and research has focused on creating composite particles using AlH with coatings like ammonium perchlorate (AP) and perfluoropolyether (PFPE).
- The study involved formulating and fabricating composite propellants, analyzing their thermal reactivity, energy output, and combustion performance, revealing significant improvements in energy release over traditional propellants.
- Notably, the specially designed propellant with the PFPE coating (AHAPs-F) delivered the highest combustion performance, with total heat releases 1.7 times greater than conventional mixtures, indicating enhanced efficiency and higher temperatures during combustion.
Article Synopsis
- Aluminum hydride (AlH) is being explored as a solid propellant fuel, but it faces stability issues that researchers are working to address.
- A new approach involved applying a hydrophobic surface functionalization using perfluoropolyether (PFPE) and coating with ammonium perchlorate (AP), resulting in composites called AHFPs.
- These AHFPs showed significant improvements, including higher initial decomposition temperatures and enhanced flame intensity, indicating that the PFPE and AP coatings effectively stabilize AlH.
Article Synopsis
- This study focuses on the role of landscape water in urban water systems and how excess nitrogen impacts the ecology, particularly the community structure of denitrifying bacteria.
- Researchers used functional genes as markers to assess these bacteria in landscape water and sediment, noting significant seasonal and spatial distribution differences in nitrogen levels.
- Findings revealed that denitrifying bacteria mainly belong to the Proteobacteria phylum, with environmental factors such as permanganate index and total phosphorus significantly affecting their community structure in both water and sediment.
Dissolved organic matter (DOM) plays an important role in the evolution of microbial communities. Meanwhile, ecological water delivery is an important feature of Baiyangdian Lake. To explore how the structure of the aerobic denitrification bacteria community responds to DOM during the water delivery period, the DOM components of water were examined and high-throughput sequencing of aerobic denitrification bacteria was performed.
View Article and Find Full Text PDFArticle Synopsis
- Spotted fever group rickettsiae, primarily spread by ticks, are key agents of emerging zoonotic diseases, making their study crucial for disease prevention and control.
- A study collected 305 ticks from various animals in southwestern China between 2017-2019 and detected two species of rickettsiae: the pathogenic Candidatus Rickettsia jingxinensis and a potential new species Rickettsia sp. sw.
- The research found that Candidatus R. jingxinensis was present in specific tick species, while Rickettsia sp. sw was reported for the first time in Amblyomma geoemydae, highlighting the need for further investigation into its pathogenicity.*
Article Synopsis
- This study examined the impact of various risk factors on the loss of residual renal function (RRF) in children undergoing automated peritoneal dialysis (APD), particularly focusing on those treated between January 2008 and December 2016.
- The research included 66 children who had a baseline urine volume of at least 100 ml/m and tracked their RRF over at least 12 months of APD therapy.
- Results indicated that 43.9% of the children experienced RRF loss after a year, with factors such as low initial urine volume, high glucose exposure, and high ultrafiltration volume increasing the risk, while diuretic use was linked to better preservation of RRF.
Article Synopsis
- This research focuses on using human bone marrow-derived mesenchymal stem cells (BMSCs) for biotherapy in treating hepatocellular carcinoma (HCC) and measures changes in cancer progression through a new MR imaging probe known as Gd-RGD.
- The study found that after 6 weeks of BMSC treatment, there was a significant reduction in tumor weight, particularly marked 3 weeks post-transplant, and improvements in MR imaging signals were observed, though Gd-RGD showed less enhancement compared to the control agent Gd-DTPA.
- Molecular analysis indicated that BMSC intervention decreased the expression of proliferation and metastasis-related markers like OPN and TGFβ1 in high
Article Synopsis
- - Hydrothermal reactions producing oxyfluorovanadium-diphosphonates involve vanadate sources, organodiphosphonates, organonitrogen components, and HF, forming structures with different connectivity patterns, despite similar V/P/O/F networks.
- - The study showcases five distinct structures, including 3D "pillared" layers and 2D slab-like forms, with variations in the arrangement of vanadium and fluorine-containing octahedra and organic tethers from diphosphonates.
- - Structures 4 and 5 demonstrate large channels for crystallization water removal, with 4 featuring binuclear and trinuclear vanadium clusters, while 5 consists of chains of corner-sharing octahedra,
Article Synopsis
- - The study investigates how varying lengths of diphosphonate ligands (from 2 to 9 units) affect the structure of vanadium-phosphate-oxide compounds formed through hydrothermal reactions, leading to different structural types including 3-D "pillared" layers and 2-D slabs.
- - As ligand length increases, the oxides transition from 3-D architectures to 2-D slab structures and back to 3-D configurations, showcasing unique arrangements of vanadium, phosphate, and water within their frameworks.
- - Introducing organic cations to balance the charges in these compounds creates additional structural variations, with distinct interlamellar spaces for cations and water, influenced by the length of the organic components.