Results 101 to 110 of about 236,715 (297)

Measuring different oxygenation levels in a blood perfusion model simulating the human head using NIRS

open access: yesCurrent Directions in Biomedical Engineering, 2015
The oxygenation, perfusion and metabolism of the brain - segmented in both hemispheres - can be estimated from the oxygenation and hemoglobin levels of the venous blood in the cerebral efferent vessels.
Rackebrandt K., Gehring H.
doaj   +1 more source

Spin‐State Manipulation of Atomic Manganese Center by Phosphide‐Support Interactions for Enhanced Oxygen Reduction

open access: yesAdvanced Materials, EarlyView.
The electronic configuration of Mn single‐atom sites is regulated from low‐spin to high‐spin states by embedding well‐defined molybdenum phosphide nanocrystals nearby (MoP@MnSAC‐NC). The electronic phosphide‐support interaction between MoP and Mn single atoms drives the electronic structure transition in Mn sites from low‐spin to high‐spin states, and ...
Zuyang Luo   +9 more
wiley   +1 more source

Sonicated Carbon Nanotube Catalysts for Efficient Point‐of‐use Water Treatment

open access: yesAdvanced Materials, EarlyView.
The growing demand for freshwater and rising contamination of water sources require innovative treatment technologies. Sonicated carbon nanotubes can activate persulfate for selective contaminant degradation via nonradical pathways. This scalable approach enables rapid pollutant removal, offering a sustainable solution for decentralized freshwater ...
Xin Yang   +13 more
wiley   +1 more source

A Light‐Driven Closed‐Loop Chemical Recycling System for Polypinacols

open access: yesAdvanced Materials, EarlyView.
This study presents a novel strategy for the photochemical closed‐loop recycling of hydroxyl‐rich polymers. Simple bis‐aldehyde precursors are employed to synthesize polypinacols via UV light irradiation. Subsequent depolymerization is achieved under visible light using a cerium‐based photocatalyst, enabling monomer recovery through selective cleavage ...
Ahsen Sare Yalin   +3 more
wiley   +1 more source

Polycondensation as a Universal Method for Preparing High‐Density Single‐Atom Catalyst Libraries

open access: yesAdvanced Materials, EarlyView.
This paper presents a universal bottom‐up polycondensation strategy for synthesizing high‐density single‐atom catalysts (HD‐SACs) with metal loadings up to 27.5 wt%. Using various metal monomers with 1,10‐phenanthroline‐5,6‐dione ligands, it generates atomically dispersed mono‐ and bimetallic HD‐SACs.
Jaques‐Christopher Schmidt   +21 more
wiley   +1 more source

Understanding the Role of Copper Oxidation State on a TiO2/ZSM‐5 Catalyst for Photocatalytic CO2 Reduction to Methanol

open access: yesAdvanced Materials Interfaces, EarlyView.
The influence of copper oxidation states on TiO₂/ZSM‐5 catalysts is investigated for photocatalytic CO2 reduction to methanol. A Cuδ⁺‐modified Ti₂/ZSM‐5 catalyst (CTZ‐1) exhibits superior activity due to enhanced electronhole separation, the presence of Ti3⁺, and a core–shell structure.
Wibawa Hendra Saputera   +10 more
wiley   +1 more source

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