The equalization of basic public services and the advancement of new-type urbanization are pivotal concerns within the framework of regional economic theory and national developmental strategies. Nonetheless, China's current landscape of basic public service equalization falls short of desired levels, while the aspiration for high-quality development embedded in new-type urbanization initiatives remains largely aspirational, lacking robust implementation frameworks, particularly in the underdeveloped western counties. Drawing upon an empirical econometric analysis, this study delves into the intricate relationship between new-type urbanization and basic public service equalization, focusing on 88 counties in Guizhou Province, spanning the years 2011-2022.
View Article and Find Full Text PDFBy their powerful talent in manipulating optical parameters, metasurfaces demonstrate great ability in the generation of the vortex beams. Until now, vortex beam generators constructed by metasurfaces mostly lack tunability, which reduces the scope of their applications. Here, spin-decoupled moiré metalenses composed of two cascaded all-dielectric metasurfaces are designed.
View Article and Find Full Text PDFEnviron Sci Pollut Res Int
September 2024
Urban industrial pollution plays a dominant role in environmental pollution in China. Exploring the digital governance path of urban industrial pollution can provide strong support for improving environmental quality. This article empirically investigates the role and path of digitalization in the governance of urban industrial pollution from three dimensions: economic scale, structural scale, and technological scale.
View Article and Find Full Text PDFEfficient utilization of solar energy for photocatalytic applications, particularly in the infrared spectrum, is crucial for addressing environmental challenges and energy scarcity. Herein we present a general strategy for constructing efficient infrared-driven photocatalysts in a metal/semiconductor heterojunction with Ohmic contact, where metals with low work function as the infrared-light absorber and semiconductors with electron storage ability can overcome the unfavorable electron flowback. Taking the NiB/MO (M = Ce, Ti, Sn, Ge, Zr, etc.
View Article and Find Full Text PDFVaricoceles are a common cause of male infertility, affecting up to 35% of men undergoing fertility evaluations. This study aims to investigate the potential influence of altitude and residence time on the occurrence of varicoceles, as well as on sperm quality and sterility in plateau areas. A total of 168 patients with varicocele were enrolled in the study, and the study population was divided into groups based on their direct exposure to different high altitudes due to their living locations.
View Article and Find Full Text PDFBiochem Biophys Res Commun
April 2024
Purpose: Metabolic dysfunction-associated steatohepatitis (MASH) is a liver disease that has gained widespread attention globally. Unfortunately, there is no approved treatment for this condition yet. However, recent research has identified Apoptosis signal-regulating kinase 1 (ASK1) and thyroid hormone receptor-β (THR-β) as potential targets for treating MASH.
View Article and Find Full Text PDFWe aimed to compare the clinical efficacy of fecal microbiota transplantation (FMT) from the same sex on ulcerative colitis (UC) patients. A total of 272 UC patients were selected in the prospective clinical study, which incorporated four distinct groups, each comprising male and female patients, who were either receiving FMT or placebo, respectively. FMT was performed by sending the gut microbiota of healthy female or male adolescents to the same gender patients via gastroscope three times (one time/three weeks), and a placebo was used with an equal volume of saline.
View Article and Find Full Text PDFThe chemical fixation of CO as a C1 feedstock is considered one of the most promising ways to obtain long-chain chemicals, but its efficiency was limited by the ineffective activation of CO. Herein, we propose a grain boundary engineering strategy to construct polarized active pairs with electron poor-rich character for effective CO activation. By taking CeO as a model system, we illustrate that the polarized "Ce-Ce-Ce" pairs at the grain boundary can simultaneously accept and donate electrons to coordinate with O and C, respectively, in CO.
View Article and Find Full Text PDFEstablished in 2017, the Screening Cohort for Asian Nomadic descendants in China (Scan-China) has benefited over 180,000 members of a multi-ethnic population, particularly individuals of Mongolian descent compared with the general population (Han ethnicity), in the Inner Mongolia Autonomous Region, China. This cohort study aims to evaluate the effectiveness of cancer screening and serve as a real-world data platform for cancer studies. The 6 most prevalent cancers in China are considered-namely, breast, lung, colorectal, gastric, liver and esophageal cancer.
View Article and Find Full Text PDFCO emissions have become a topical issue worldwide, but few studies have considered the spatial effect of income on carbon emissions and explored the relationship between CO emissions and income by establishing direct, indirect, and total environmental Kuznets curves (EKCs). Using an annual panel dataset collected over the 1997-2017 period in China, this study first analyzed the spatiotemporal evolutionary process of CO emissions and subsequently developed direct, indirect, and total EKC-based spatial Durbin model (SDM) and partial derivative approach. These results indicate that, first, CO emissions have characteristic positive spatial autocorrelation, with gravity centers that have shifted westward.
View Article and Find Full Text PDFCycloaddition of epoxides with CO to synthesis cyclic carbonates is an atom-economic pathway for CO utilization with promising industry application value, while its efficiency was greatly inhibited for the lack of highly active catalytic sites. Herein, by taking BiOX (X = Cl, Br) with layered structure for example, we proposed a facet engineering strategy to construct Lewis acid-base pairs for CO cycloaddition, where the typical BiOBr with (010) facets expose surface Lewis acid Bi sites and Lewis base Br sites simultaneously. By the combination of diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) and theoretical calculations, the oxygen atom of the epoxide is interacted with the Lewis acid Bi site to activate the ternary ring, then facilitates the attack of the carbon atom by the Lewis base Br site for the ring-opening of the epoxide, which is the rate-determining step in the cycloaddition reaction.
View Article and Find Full Text PDFThe chemical conversion of CO to long-chain chemicals is considered as a highly attractive method to produce value-added organics, while the underlying reaction mechanism remains unclear. By constructing surface vacancy-cluster-mediated solid frustrated Lewis pairs (FLPs), the 100 % atom-economical, efficient chemical conversion of CO to dimethyl carbonate (DMC) was realized. By taking CeO as a model system, we illustrate that FLP sites can efficiently accelerate the coupling and conversion of key intermediates.
View Article and Find Full Text PDFThis paper uses the entropy method to estimate China's green financial development from four aspects, namely, green credit, green securities, green insurance, and green investment, based on the provincial-level panel data from 2008 to 2019. The spatial Durbin model (SDM) is adopted to estimate the spatial effect of green finance on carbon emissions. We then compare the heterogeneous effect in the South and North of China.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
July 2022
Here, noble-metal-doped two-dimensional metal oxide nanosheets are designed to realize selective CO photoreduction to CH . As a prototype, Pd-doped CeO nanosheets are fabricated, where the active sites of Pd (2<δ<4) and Ce -O are revealed by quasi in situ X-ray photoelectron spectra and in situ electron paramagnetic resonance spectra. Moreover, in situ Fourier-transform infrared spectra of D O photodissociation and desorption verify the existence of the Pd-OD bond, implying that Pd sites can participate in water oxidation to deliver H* species for facilitating the protonation of the intermediates.
View Article and Find Full Text PDFWith the tendency toward economic and strategy decoupling between China and the United States and amidst the anti-globalization trend, enterprises are facing unprecedented challenges and opportunities. In this study, we reveal how the agile intuition (AI) of top managers with respect to the external environment affects enterprise innovation behavior (IB) based on the cognition-behavior framework. Strategic learning (SL) is considered a moderator, and knowledge sharing (KS) is considered a mediator.
View Article and Find Full Text PDFAngew Chem Int Ed Engl
January 2022
Chemical fixation of carbon dioxide (CO ) into value-added organics is regarded as a competitive and viable method in large scale industrial production, during which the catalysts with promoting CO activation ability are needed. Herein, we proposed an in-plane heterostructure strategy to construct Lewis acid-base sites for efficient CO activation. By taking ultrathin in-plane Cu O/Cu heterostructures as a prototype, we show that Lewis acid-base sites on heterointerface can facilitate a mixed C and O dual coordination on surface, which not only strengthen CO adsorption, but also effectively activate the inert molecules.
View Article and Find Full Text PDFBiochim Biophys Acta Mol Basis Dis
January 2021
Our previous study demonstrated that IL-10 secreting B (B10) cells alleviate inflammation and bone loss in experimental periodontitis. The purpose of this study is to determine whether antigen-specificity is required for the local infiltration of B10 cells. Experimental periodontitis was induced in the recipient mice by placement of silk ligature with or without the presence of live Porphyromonas gingivalis (P.
View Article and Find Full Text PDFOral Surg Oral Med Oral Pathol Oral Radiol
May 2018
Objective: Investigation of dendritic cell (DC) subsets and expression patterns of Toll-like receptors (TLRs) was conducted to understand the pathogenesis in oral lichen planus (OLP).
Study Design: Blood, OLP lesion, and control samples were collected. Four DC subsets (CD11cCD123myeloid DC1 [mDC1], CD141mDC2, CD11cCD123plasmacytoid DC [pDC], and CD1aCD207Langerhans cells [LC]) were investigated via flow cytometry (FCM) and immunohistochemical staining.
Background: The efficacy and safety of allergen-specific immunotherapy (AIT) are highly dose-dependent.
Methods: We investigated the dosage effects of AIT and the underlying mechanisms in a murine model of shrimp hypersensitivity. BALB/c mice were sensitized with recombinant shrimp allergen rMet e 1 and challenged orally with a high dose of rMet e 1 to elicit an allergic response.
By the introduction of -OH group(s) into different position(s) of 6-(pyridin-2-ylmethyl)-2,2'-bipyridine, several NNN-type ligands were synthesized and then introduced to ruthenium (Ru) centers by reactions with RuCl(PPh). In the presence of PPh or CO, these ruthenium complexes reacted with NHPF in CHCl or CHOH to give a series of ionic products . The reaction of Ru(L)(PPh)Cl () with CO generated a neutral complex [Ru(L)(CO)Cl] ().
View Article and Find Full Text PDFFive ruthenium(ii) complexes were synthesized, including (HO-C5H3N-CH2-C5H3N-C5H4N)Ru(PPh3)Cl2 (3), [(HO-C5H3N-CH2-C5H3N-C5H4N)Ru(PPh3)2Cl][PF6] (4) and [(HO-C5H3N-CH2-C5H3N-C5H4N)Ru(PPh3)2OH][PF6] (5) bearing an unsymmetrical pincer NNN ligand with a 2-hydroxypyridylmethylene fragment, and [(CH3O-C5H3N-CH2-C5H3N-C5H4N)2Ru][Cl]2 (6) and [(CH3O-C5H3N-CH2-C5H3N-C5H4N)2Ru][PF6]2 (7) containing 2-methoxypyridylmethylene moieties. 4 reacts with H2O at room temperature to give 5 whose crystal structure reveals the existence of intramolecular hydrogen-bonding between its two -OH groups. 3 exhibits high catalytic activity for transfer hydrogenation of ketones.
View Article and Find Full Text PDFThe one-bead-one-compound (OBOC) combinatorial peptide library is a powerful tool to identify ligand and receptor interactions. Here, we applied the OBOC library technology to identify mimotopes specific to the immunoglobulin E (IgE) epitopes of the major shellfish allergen tropomyosin. OBOC peptide libraries with 8-12 amino acid residues were screened with serum samples from patients with shellfish allergy for IgE mimotopes of tropomyosin.
View Article and Find Full Text PDFDesigner proteins deprived of its IgE-binding reactivity are being sought as a regimen for allergen-specific immunotherapy. Although shrimp tropomyosin (Met e 1) has long been identified as the major shellfish allergen, no immunotherapy is currently available. In this study, we aim at identifying the Met e 1 IgE epitopes for construction of hypoallergens and to determine the IgE inhibitory capacity of the hypoallergens.
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