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Last Updated: 20 May 2022

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Mesopore–rich Fe–N–C catalyst with FeN4–O–NC Single Atom Sites Delivers Remarkable Oxygen Reduction Reaction Performance in Alkaline Media

Fe–N–C catalysts provide excellent results for alkaline media's oxygen reduction reaction. Finetuning the local coordination of Fe single atom sites in Fe–N–C catalysts is critical in order to maximize intrinsic ORR activity of Fe single atom sites in Fe–N–C catalysts. The presence of FeN4–O active sites in FeN4–O–NCR was confirmed by spectroscopy absorption, providing a lower energy and more selective 4proton ORR pathway, relative to traditional FeN4–Orange sites, according to FeN4–O’s traditional FeN4–Origin, although denst deny data showed that the FeN4–O coordination provided a lower cost and more direct 4proton ORR routes compared to traditional FeN4–O–O-O active FeN4–O–O–O–NCR, X-NCR and X–O–O–O–O–O–O–proton4–proton4–O–O–O–O–O–O–Ton4–O–O–NCR route and X–O–N4–O–N4–O–O–O–O–O–O–O–O–O–O–O–N4–O–O–O–O–O–O–O–O–O–O–N4.

Source link: https://onlinelibrary.wiley.com/doi/10.1002/adma.202202544


C‐reactive protein to albumin ratio (CAR) in predicting surgical site infection (SSI) following instrumented posterior lumbar interbody fusion (PLIF)

The identification of novel markers would aid in the individualised risk assessment and creation of a risk prediction system. Following an instrumented posterior lumbar interbody fusion of lumbar degenerative diseases, this research sought to investigate the role of the C-reactive protein to albumin ratio in predicting surgical site infection. This review included patients who underwent PLIF and instrumentation for the treatment of lumbar degenerative diseases between 2015 and 2020. Patients with high or low CAR values were compared using univariate methods, and the relationship between CAR and SSI's risk was investigated using multivariate logistic regression analysis. An SSI was identified by a CAR 0. 09 and 22 patients in the 336 patients, with a risk of 5. 6 percent relative to those with a low CAR.

Source link: https://onlinelibrary.wiley.com/doi/10.1111/iwj.13843


Triggering the Lattice Oxygen Activation of Single‐atomic Mo Sites Anchored Ni‐Fe Oxyhydroxides Nanoarrays for Electrochemical Water Oxidation

Tuning the reactivity of lattice oxygen is of utmost importance for lowering the energy barriers and increasing the oxygen evolution reaction. It has been consistently reported that the incorporation of single-atomic Mo sites permits both the higher oxidation state of metal and enhanced metaloxygen hybridization, as well as the emergence of oxidized ligand holes above Fermi's level. In a word, the significant increase in water oxidation is caused by raising the reactivity of lattice oxygen and triggering the lattice oxygen activation.

Source link: https://onlinelibrary.wiley.com/doi/10.1002/adma.202202523


Alternatively activated macrophages at the recipient site improve fat graft retention by promoting angiogenesis and adipogenesis

This research was designed to locate host-derived macrophages and to assess macrophage infiltration at the recipient site during the early stages of long-term fat graft retention. The fat procurement plus grafting group was engrafted with cooked fat. On Day 3, the pro-Grafting+M2 group was engrafted with ready fat mixed with 1. 0 106 GFP+M0 macrophages, and then, 2 ng IL4 was introduced into the grafts, prognoGrafting+M2 group was injected into the grafts. As a result, GFP+macrophages first infiltrated the donor site and then invaded the Pro-Grafting group's recipient site. In the Pro-Grafting+M2 group, the long-term retention rate was higher than in the ProGrafting group than in the ProGrafting group. The host macrophages preferentially infiltrate the donor site and then infiltrate the recipient site after fat transplantation. An increase in macrophages at the recipient site may encourage vascularization and regeneration, and consequently raise the fat graft retention rate at an early age.

Source link: https://onlinelibrary.wiley.com/doi/10.1111/jcmm.17330


Intervention efficacy of MARSI nursing management on skin injury at peripherally inserted central catheter insertion site on oncological patients

At a peripherally introduced central catheter insertion site on oncological patients, we can determine the safety of medical adhesive-related skin injury nursing care. From January 2019 to December 2020, we randomly divided 156 patients with PICCs implanted in our hospital's surgery department from January 2019 to December 2020 into a control group and an intervention group. MARSI's incidence rate and the MARSI nursing care management group was compared between the two groups by a number of interventions. The incidence of MARSI infections at the PICC insertion site can be greatly reduced by implementing MARSI nursing care administration.

Source link: https://onlinelibrary.wiley.com/doi/10.1111/iwj.13805


Numerical Simulation of Thaw Settlement and Permafrost Changes at Three Sites Along the Qinghai‐Tibet Engineering Corridor in a Warming Climate

In recent decades under climate change, Thaw's permafrost deposition has had major impacts on engineering infrastructure, hydrological cycles, and ecosystems. To produce a new movinggrid permafrost model, we combined the moving mesh method with the heat conduction equation. At the three sites along the Qinghai Tet Engineering Corridor from 1966 to 2018, we used the model to simulate the thaw settlement and the permafrost transitions.

Source link: https://onlinelibrary.wiley.com/doi/10.1029/2021GL097334


A structurally preserved allosteric site in the MIF superfamily affects enzymatic activity and CD74 activation in D‐dopachrome tautomerase

Previously, we reported a dynamic relay linking the MIF catalytic site to an allosteric channel at its solvent channel. Although MIF homolog DDT has low sequence identity, they share several functions, including activation of the CD74 receptor and sharing a nearly identical tertiary system.

Source link: https://onlinelibrary.wiley.com/doi/10.1096/fasebj.2022.36.S1.L7711


Mapping Allosteric Sites on Protein Kinases Critical in MAPK Signaling

With this knowledge, we then investigated the BRAF complex's crystal structure in MEK to generate mutations to see if the same region of MEK that contacts the B-Raf alpha helix is crucial for binding ERK. In addition, since no detailed configuration of the MEKERK complex was available, we generated mutations in various regions of the Clobe of ERK as a starting point to find a region of contact. Our MEK mutants showed no difference in binding to B-Raf, but they did have modified binding to ERK. MEK binding to B-Raf and ERK differs, according to this. The determination of whether our mutation affects the conformation of a nearby alpha helix of ERK and as a result affects MEK binding or is due to a direct cause is uncertain.

Source link: https://onlinelibrary.wiley.com/doi/10.1096/fasebj.2022.36.S1.R3001

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions