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Advanced cortisol detection: A cMWCNTs-enhanced MB@Zr-MOF ratiometric electrochemical aptasensor.
Bioelectrochemistry
January 2025
School of Traditional Chinese Medicine, Capital Medical University, Beijing 100069, China; Laboratory for Clinical Medicine, Capital Medical University, Beijing 100069, China. Electronic address:
A ratiometric electrochemical aptasensor was developed for ultra-sensitive detection of cortisol using aptamer (Apt) as recognition element, methylene blue (MB) as signal probe, and zirconium metal-organic framework (Zr-MOF) as carrier loaded with abundant MB for signal amplification. The carboxylated multi-walled carbon nanotubes (cMWCNTs)-modified Au electrode showed excellent electrochemical performance to immobilize complementary DNA (cDNA) for hybridizing with MB@Zr-MOF-Apt via amide bonds. In the presence of cortisol, it would compete with cDNA for binding the Apt, resulting in the detachment of MB@Zr-MOF-Apt complex from the electrode surface, and the electrochemical signal of MB was decreased, while that of [Fe(CN)] was basically unchanged.
View Article and Find Full Text PDFSensitive dependence of pairing symmetry on Ni-e crystal field splitting in the nickelate superconductor LaNiO.
Nat Commun
January 2025
NYU-ECNU Institute of Physics, NYU Shanghai, Shanghai, China.
The discovery of high-temperature superconductivity in LaNiO under pressure has drawn great attention. However, consensus has not been reached on its pairing symmetry in theory. By combining density-functional-theory (DFT), maximally-localized-Wannier-function, and linearized gap equation with random-phase-approximation, we find that the pairing symmetry of LaNiO is d, if its DFT band structure is accurately reproduced by a downfolded bilayer two-orbital model.
View Article and Find Full Text PDFVariations in land surface temperature increase in South-East Asian Cities.
Environ Monit Assess
January 2025
Mathematics Department, Faculty of Mathematics and Natural Sciences, Universitas Syiah Kuala, Banda Aceh, Indonesia.
Climate change and global warming are terms used to describe the variation in the Earth's mean temperature as a result of human activities contributing to the formation of urban heat islands (UHI). One method for determining the temperature of a region is the land surface temperature (LST). The study of LSTs is important and closely related to climate change, as is the provision of convenient living and working conditions in cities, which support economic growth.
View Article and Find Full Text PDFVibration Foam Rolling Treatment Influence on Acute Changes in Plantar Flexors Muscle Temperature and Surface Emg Activity in Amateur Male Athletes.
J Funct Morphol Kinesiol
January 2025
Faculty of Sport and Physical Education, University of Belgrade, 11000 Belgrade, Serbia.
Foam rolling is widespread and deeply rooted in exercise practice. The optimal duration and role of this treatment still lack scientific consensus. A relatively novel foam rolling treatment that combines vibration during application targets different muscle characteristics that are not well understood.
View Article and Find Full Text PDFDefinition of minimum clearance height of railway bridges in a windblown sand area based on numerical simulation.
Heliyon
January 2025
Institute of Ecological Conservation and Restoration, Chinese Academy of Forestry, Beijing, 100091, China.
Railway bridges with lower beam bottom clearances in windblown sand areas tend to accumulate sand particles on the sides of the beams, which seriously impacts railway safety. To investigate the effect of beam clearance height on wind-sand movement near the surface, and to determine the minimum clearance height for railway bridges in such areas, computational fluid dynamics using the Euler-Euler two-phase flow model was employed to simulate the wind-sand flow field beneath bridges with different heights. The results indicated that as clearance height increased, both the high-speed area above the bridge and acceleration area under the bridge increased, while the turbulence area on the leeward side remained unchanged.
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