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The CO2 hydrogenation to olefins process over Fe‐based catalysts offer a promising route for the production of high‐value chemicals from non‐fossil route. Herein, we present a Na promoted ZnFe2O4 spinel catalyst and their structural evolution from fresh state to reduction and to reaction period was elucidated. The clear phase segregation between Fe and Zn occurred after reduction/reaction because of crystalline phase transformation in the order of ZnFe2O4→ZnO+Fe7C3+χ‐Fe5C2→FeO+ZnO+Fe7C3+χ‐Fe5C2. The formation of iron carbide phases (Fe7C3 and χ‐Fe5C2) was enhanced dramatically by Na promoter. The adjacent Na promoter increase the electron density in Fe−Zn interfaces and enhance its ability to dissociate CO* to form adsorbed CHx* species, thus promoting the formation of olefins. This Na promoted rich electronic Fe−Zn interfaces alters the balance between iron oxides and iron carbides on the catalyst surface, which accelerate the chain growth reaction and facilitate the coupling efficiency of tandem reaction. The various catalysts were characterized by N2 physisorption, SEM, HR‐TEM, HAADF‐STEM, ex‐situ /in situ XRD, Mössbauer spectra, ICP, in situ XPS, and operando DRIFTs. [ABSTRACT FROM AUTHOR]

Resveratrol is a polyphenolic compound that exhibits antiinflammatory and cardioprotective properties. In this study we investigated the protective role of resveratrol on the inflammatory activation of macrophages during pathogenesis of atherosclerosis. Macrophage Ana-1 cells were stimulated by cholesterol and resveratrol, and the cell culture supernatant was collected to treat human umbilical vein endothelial cells (HUVECs). The release of IL-1β into the Ana-1 cell supernatant was quantified by ELISA. Expression of the adhesion molecule ICAM-1 and E-selectin in HUVECs were examined by Western-blotting. Additionally, the adhesion of monocytes in HUVECs under different conditions was tested by cell adhesion analyses. The results indicated that the high cholesterol treatment increased the expression level of IL-1β, while pretreatment with resveratrol inhibited this induction of IL-1β in Ana-1 cells. Resveratrol inhibited the adhesion of monocytes to the endothelium at least partly through inhibition of IL-1β expression in macrophages. Moreover, the expression level of caveolin-1 significantly increased after the pretreatment with resveratrol, indicating that resveratrol enhances reverse cholesterol transport (RCT) in macrophages. Our study indicated that resveratrol has significant antiinflammatory effects and can be considered as a candidate molecule to prevent atherosclerosis.

Objective: Current X‐ray‐based classification methods cannot describe all distal clavicle fracture (DCF) patterns, especially the osteoligamentous injury pattern of DCFs. We aimed to develop a novel classification based on the osteoligamentous injury pattern of the DCFs and investigated its reliability. Methods: All DCFs from January 2017 to January 2022 were respectively screened and 45 cases (mean age 20–78; male 31, female 14) met the including criteria and were enrolled. Based on their Zanca view X‐ray radiograph and three‐dimensional CT construction images, we analyzed the osteoligamentous injury pattern of each case, particularly the acromioclavicular (AC) and coracoclavicular ligaments and their bone attachment. Then we developed a novel classification method, five types in total, sorting all DCFs according to their lesion manifestations of osteoligamentous complex. Also, we investigated the inter‐ and intra‐observer reliability using kappa value. Results: A novel classification method for DCF was developed, manifesting the avulsion or rupture of conoid and trapezoid ligaments, and involvement of AC joint. Forty‐five cases of DCFs were included in this study. Among them, 11 (24.4%) were Type 1 fracture, three (6.7%) cases were Type 2, six cases (13.3%) were Type 3, 21 (46.7%) were Type 4, four (8.9%) were Type 5. Kappa values for inter‐observer agreement were 0.57 after first evaluation and 0.61 after second evaluation. Intra‐observer agreement was 0.72 for experienced shoulder specialist and 0.63 for radiologist. Conclusion: This new classification method is reliable to use, supplementary to current classification systems, and emphasizes on the osteoligamentous complex injury when opting for the treatment. [ABSTRACT FROM AUTHOR]

Objective: Implant failure is a disastrous complication of the operative treatment of midshaft clavicle fractures, and improving the osteosynthesis plate is a strategy for preventing this. We aimed to investigate whether canceling the notch and adding screw‐hole inserts enhanced the mechanical properties of the plate. Methods: A clavicle model was generated based on the CT images of six adult volunteers (age range, 20–40 years; three males and three females; height range 160–175) using dedicated software, and a midshaft fracture model was created. The domestically made seven‐hole locking plate commonly used for midshaft clavicle fractures was simulated (Model I); modifications were made to the plate (Model II). Using 3D finite element analysis, we simulated the fracture construct under three different load conditions—downward cantilever bending, axial compression, and axial torsion—and compared the stress distribution. Results: We found that under axial compression, Model II experienced its maximum stress on the plate at 551.9MPa, which was less than that in Model I (790.4 MPa). Moreover, a greater stress concentration at the fracture site was observed under axial torsion, despite the maximum stress of both the models being similar. Conclusion: Canceling the notch and filling the screw holes near the fracture can ameliorate stress concentration on the internal fixation construct and enhance its reliability under axial compression. This improvement has substantial effects on the mechanical properties of implants and potentially prevents implant failure. Modern osteosynthesis anatomical implants need to be improved. [ABSTRACT FROM AUTHOR]

Electrochemical water splitting for the oxygen evolution reaction (OER) requires highly active, long-durable, and cost-effective catalysts to meet the needs of large-scale hydrogen production in the future. Herein, we studied the OER performance of spinel MFe2O4 (M = Zn and Ni) and NiOx. These metal oxides showed markedly different activities, which were closely related to their charge-transfer resistance and electrochemical surface area, attributing to the amount of oxygen vacancies. Particularly, ZnFe2O4 exhibits superior OER activity with an overpotential of 318 mV at the current density of 10 mA cm−2 (η10) and a Tafel slope of 50 mV dec−1. Furthermore, ZnFe2O4 also presents outstanding long-term stability for 100 h with negligible decay even at a high current density of 800 mA cm−2. This work provides a fundamental insight into the oxygen vacancy and spinel structure to help for the design of OER catalyst toward highly efficient water splitting. [ABSTRACT FROM AUTHOR]

Both hypertension and hyperuricemia are closely associated with the morbidity and mortality of heart failure with preserved ejection fraction (HFpEF). However, there is limited evidence on the effect of uric acid-lowering therapy on left ventricular (LV) diastolic function in this population. In this randomized study, we prescribed benzbromarone, a uric acid-lowering drug, to those with hypertension and asymptomatic hyperuricemia to investigate its clinical benefits by evaluating LV diastolic function, incidence of HFpEF and hospitalization for heart failure and cardiovascular death. 230 participants were randomly assigned into two groups: uric acid-lowering group (benzbromarone) and control groups (without uric acid-lowering drug). The primary endpoint was LV diastolic function evaluated by echocardiography. The secondary endpoint of composite endpoints is the combination of new-onset HFpEF, hospitalization for heart failure and cardiovascular death. After a median of 23.5 months' follow-up (16–30 months), the primary endpoint reflected by E/e' in benzbromarone group reached a significant improvement when compared to control group (p <.001). Composite endpoints occurred in 11 patients of the control group while only 3 patients occurred in the benzbromarone group (p =.027). We also presented the favorable trend of freedom from the composite endpoints or new-onset HFpEF using Kaplan–Meier curve by log-rank test in benzbromarone group (p =.037 and p =.054). Our study demonstrated the efficiency of benzbromarone in hypertensive patients with concomitant asymptomatic hyperuricemia, including the benefits on ameliorating LV diastolic dysfunction as well as improving composite endpoints. [ABSTRACT FROM AUTHOR]