Search results for: Yong Chen

Items from 1 to 20 out of 3,110 results

article

Cp*Rh(III)‐Catalyzed Divergent Synthesis of N‐Heterocycles with N‐Methoxyindoleamides and Isoxazolones

Dan‐Ting Shen, Wen‐Xuan Zou, Shao‐Yong Chen, Lin Xiao, more

Advanced Synthesis & Catalysis > 366 > 19 > 4089 - 4094

A method for synthesizing pyrimido[1,2‐a]indol‐4‐ol heteroarenes via a Cp*Rh(III)‐catalyzed cascade C−H activation/annulation strategy employing N‐methoxyindoleamides and isoxazolones is developed. Also, a framework of 3‐methoxy‐2,3‐dihydro‐[1,3,5]triazino[1,2‐a]indole‐4,10‐dione was successfully synthesized via a Cp*Rh‐catalyzed C−H activation/annulation/oxidation reaction between N‐(methyloxy)‐1...

article

Guest‐Induced Thermally Activated Delayed Fluorescence Organic Supramolcular Macrocycle Scintillators for High‐Resolution X‐Ray Imaging

Guozhen Zhang, Fuhai Chen, Yiming Di, Siqi Yuan, more

Advanced Functional Materials > 34 > 41 > n/a - n/a

Organic scintillators, pivotal in security and medical applications, face challenges due to limited X‐ray absorption and exciton utilization. Herein, a novel class of organic scintillators is introduced, named guest‐induced thermally activated delayed fluorescence (TADF) within supramolecular macrocycles via host‐guest through‐space charge transfer (TSCT). Four co‐crystals are obtained through orthogonal...

article

Asynchronous control for nonlinear switched stochastic delayed systems with weighted mode‐dependent average dwell time

Bo Liu, Longsuo Li, Yong Chen

International Journal of Robust and Nonlinear Control > 34 > 17 > 11432 - 11450

This article investigates the asynchronous control for a class of nonlinear switched stochastic delayed systems. In response to this issue, the weighted mode‐dependent average dwell time is first applied to switched stochastic systems as a more general switching signal. In addition, the asynchronous phenomenon is considered to address the mismatch in practical applications, where “mismatch” means...

article

Multiple Electron Transfer in Semiconductive Ternary D‐D'‐A Metal‐Organic Framework for Enhanced X‐Ray Detection and Imaging

Qingsong Wei, Jingyan Liu, Liang Wu, Fuhai Chen, more

Small > 20 > 40 > n/a - n/a

Semiconductive metal–organic frameworks (MOFs) with donor–acceptor (D–A) characteristics have garnered attractive attention due to their capacity for separating and transferring photogenerated charges, making them promising candidates for high‐performance X‐ray detectors. However, the low charge transfer efficiency between the metal nodes and organic ligands limits the X‐ray‐to‐electricity conversion...

article

Multiyear, real‐world, retrospective cohort study using a patient‐centric approach to evaluate the burden of haemophilia B in the United States

Arianna Burton, Yong Chen, Priya Patel, Jose Alvir, more

Haemophilia > 30 > 5 > 1234 - 1237

article

Thermally Activated Delayed Fluorescent Ag(I) Complexes for Highly Efficient Scintillation and High‐Resolution X‐Ray Imaging

Siqi Yuan, Guozhen Zhang, Fuhai Chen, Jingru Chen, more

Advanced Functional Materials > 34 > 33 > n/a - n/a

Organic thermally activated delayed fluorescent (TADF) scintillators hold promising potential for applications in medical radiography and security detection, but the poor X‐ray absorption ability and inferior radioluminescence (RL) hampered their progression. Herein, the study has pioneered the development of high‐performance TADF Ag(I)‐based scintillators from M₂X₂(dppb)₂ (M = Ag, Cu; X = Cl, Br,...

article

Boosting Thermoelectric Performance of PbBi₂Te₄ via Reduced Carrier Scattering and Intensified Phonon Scattering

Gang Yao, Yong Chen, Sicheng Wang, Tao Chen, more

Small > 20 > 32 > n/a - n/a

Materials with low intrinsic lattice thermal conductivity are crucial in the pursuit of high‐performance thermoelectric (TE) materials. Here, the TE properties of PbBi₂Te_4‐xSe_x (0 ≤ x ≤ 0.6) samples are systematically investigated for the first time. Doping with Se in PbBi₂Te₄ can simultaneously reduce carrier concentration and increase carrier mobility. The Seebeck coefficient is significantly increased...

article

Qingzhuan dark tea polysaccharides‐zinc alleviates dextran sodium sulfate‐induced ulcerative colitis

Min Zheng, Chen Xie, Dan Ye, Yong Chen, more

Journal of the Science of Food and Agriculture > 104 > 12 > 7617 - 7628

BACKGROUND Qingzhuan dark tea polysaccharides (QDTP) have been complexed with Zinc (Zn) to form the Qingzhuan dark tea polysaccharides‐Zinc (QDTP‐Zn) complex. The present study investigated the protective effects of QDTP‐Zn on ulcerative colitis (UC) in mice. The UC mouse model was induced using dextran sodium sulfate (DSS), followed by oral administration of QDTP‐Zn (0.2 and 0.4 g kg⁻¹ day⁻¹). ...

article

Machine‐Learning‐Assisted Rational Design of Si─Rhodamine as Cathepsin‐pH‐Activated Probe for Accurate Fluorescence Navigation

Fei‐Fan Xiang, Hong Zhang, Yan‐Ling Wu, Yu‐Jin Chen, more

Advanced Materials > 36 > 31 > n/a - n/a

High‐performance fluorescent probes stand as indispensable tools in fluorescence‐guided imaging, and are crucial for precise delineation of focal tissue while minimizing unnecessary removal of healthy tissue. Herein, machine‐learning‐assisted strategy to investigate the current available xanthene dyes is first proposed, and a quantitative prediction model to guide the rational synthesis of novel fluorescent...

article

Covalent Organic Framework with Donor¹‐Acceptor‐Donor² Motifs Regulating Local Charge of Intercalated Single Cobalt Sites for Photocatalytic CO₂ Reduction to Syngas

Xingwang Lan, Hangshuai Li, Yuemeng Liu, Yize Zhang, more

Angewandte Chemie > 136 > 31 > n/a - n/a

Covalent organic framework (COF) has attracted increasing interest in photocatalytic CO₂ reduction, but it remains a challenge to achieve high conversion efficiency owing to the insufficient active site and fast charge recombination. Rationally optimizing the electronic structures of COF to regulate the local charge of active sites precisely is the key point to improving catalytic performance. Herein,...

article

Covalent Organic Framework with Donor¹‐Acceptor‐Donor² Motifs Regulating Local Charge of Intercalated Single Cobalt Sites for Photocatalytic CO₂ Reduction to Syngas

Xingwang Lan, Hangshuai Li, Yuemeng Liu, Yize Zhang, more

Angewandte Chemie International Edition > 63 > 31 > n/a - n/a

article

Light and Heat‐Driven Flexible Solid Supramolecular Polymer Displaying Phosphorescence and Reversible Photochromism

Wen‐Wen Xu, Yong Chen, Xiufang Xu, Yu Liu

Small > 20 > 29 > n/a - n/a

Herein, a type of light‐ and heat‐driven flexible supramolecular polymer with reversibly long‐lived phosphorescence and photochromism is constructed from acrylamide copolymers with 4‐phenylpyridinium derivatives containing a cyano group (P‐CN, P‐oM, P‐mM), sulfobutylether‐β‐cyclodextrin (SBCD), and polyvinyl alcohol (PVA). Compared to their parent solid polymers, these flexible supramolecules based...

article

Linking crustacean life history to fishery management controls and reference points

Nathaniel Willse, Claire Ober, Hsiao‐Yun Chang, Harlisa Harlisa, more

Fisheries Management and Ecology > 31 > 4 > n/a - n/a

Management of crustacean fisheries is often data‐limited, and techniques used in finfish fisheries are often inappropriate for crustaceans due to life‐history differences. Limitations in modeling capacity and data availability make it difficult to determine the status of crustacean stocks using model‐based biological reference points (BRPs), but BRPs are a key component of successful fisheries management...

article

Integrated physiological, transcriptomic and metabolomic analyses reveal the mechanism of peanut kernel weight reduction under waterlogging stress

Ruier Zeng, Tingting Chen, Xi Li, Jing Cao, more

Plant, Cell & Environment > 47 > 8 > 3198 - 3214

Waterlogging stress (WS) hinders kernel development and directly reduces peanut yield; however, the mechanism of kernel filling in response to WS remains unknown. The waterlogging‐sensitive variety Huayu 39 was subjected to WS for 3 days at 7 days after the gynophores touched the ground (DAG). We found that WS affected kernel filling at 14, 21, and 28 DAG. WS decreased the average filling rate and...

article

Pioglitazone reduces serum ketone bodies in sodium‐glucose cotransporter‐2 inhibitor‐treated non‐obese type 2 diabetes: A single‐centre, randomized, crossover trial

Min Yang, Han Yue, Qinqin Xu, Shiying Shao, more

Diabetes, Obesity and Metabolism > 26 > 8 > 3137 - 3146

Aim To examine the effects of the thiazolidinedione (TZD) pioglitazone on reducing ketone bodies in non‐obese patients with T2DM treated with the sodium‐glucose cotransporter‐2 (SGLT2) inhibitor canagliflozin. Methods Crossover trials with two periods, each treatment period lasting 4 weeks, with a 4‐week washout period, were conducted. Participants were randomly assigned in a 1:1 ratio to receive...

article

Wide‐Temperature and High‐Rate Operation of Lithium Metal Batteries Enabled by an Ionic Liquid Functionalized Quasi‐Solid‐State Electrolyte

Yonghui Deng, Shunshun Zhao, Yong Chen, Shuang Wan, more

Small > 20 > 27 > n/a - n/a

The development of high‐energy‐density solid‐state lithium metal battery has been hindered by the unstable cycling of Ni‐rich cathodes at high rate and limited wide‐temperatures adoptability. In this study, an ionic liquid functionalized quasi‐solid‐state electrolyte (FQSE) is prepared to address these challenges. The FQSE features a semi‐immobilized ionic liquid capable of anchoring solvent molecules...

article

Numerical modeling and experimental optimization of Taylor dispersion analysis with and without an electric field

Yuri Chenyakin, David Da Yong Chen

ELECTROPHORESIS > 45 > 11-12 > 1054 - 1064

Numerical modeling of Taylor dispersion analysis (TDA) was performed using COMSOL Multiphysics to facilitate better and faster optimization of the experimental conditions. Parameters, such as pressure, electric field, diameter, and length of capillary on the TDA conditions, were examined for particles with hydrodynamic radius (R_h) of 2.5–250 Å. The simulations were conducted using 25, 50, and 100 cm...

article

Deciphering CD4⁺ T cell‐mediated responses against cancer

Catherine Kirkpatrick, Yong‐Chen William Lu

Molecular Carcinogenesis > 63 > 7 > 1209 - 1220

It's been long thought that CD8⁺ cytotoxic T cells play a major role in T cell‐mediated antitumor responses, whereas CD4⁺ T cells merely provide some assistance to CD8⁺ T cells as the “helpers.” In recent years, numerous studies support the notion that CD4⁺ T cells play an indispensable role in antitumor responses. Here, we summarize and discuss the current knowledge regarding the roles of CD4⁺ T...

article

Detection and coverage estimation of purple nutsedge in turf with image classification neural networks

Xiaojun Jin, Kang Han, Hua Zhao, Yan Wang, more

Pest Management Science > 80 > 7 > 3504 - 3515

BACKGROUND Accurate detection of weeds and estimation of their coverage is crucial for implementing precision herbicide applications. Deep learning (DL) techniques are typically used for weed detection and coverage estimation by analyzing information at the pixel or individual plant level, which requires a substantial amount of annotated data for training. This study aims to evaluate the effectiveness...

article

Outward foreign direct investment productivity along the belt and road

Yongmin Zhang, Yong Chen, Renyi Zhang, Wenjun Tu, more

Economics & Politics > 36 > 2 > 959 - 988

The extant research provides inconsistent results regarding the effect of outward foreign direct investment (OFDI) on firm productivity. There is no research on the effect of OFDI in belt and road (B&R) countries on Chinese firm productivity. In this paper, the impact of B&R OFDI on Chinese firm productivity and its influencing mechanisms are investigated. The main findings of this research...

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INFONA - science communication portal

Search results for: Yong Chen

Cp*Rh(III)‐Catalyzed Divergent Synthesis of N‐Heterocycles with N‐Methoxyindoleamides and Isoxazolones

Guest‐Induced Thermally Activated Delayed Fluorescence Organic Supramolcular Macrocycle Scintillators for High‐Resolution X‐Ray Imaging

Asynchronous control for nonlinear switched stochastic delayed systems with weighted mode‐dependent average dwell time

Multiple Electron Transfer in Semiconductive Ternary D‐D'‐A Metal‐Organic Framework for Enhanced X‐Ray Detection and Imaging

Multiyear, real‐world, retrospective cohort study using a patient‐centric approach to evaluate the burden of haemophilia B in the United States

Thermally Activated Delayed Fluorescent Ag(I) Complexes for Highly Efficient Scintillation and High‐Resolution X‐Ray Imaging

Boosting Thermoelectric Performance of PbBi₂Te₄ via Reduced Carrier Scattering and Intensified Phonon Scattering

Qingzhuan dark tea polysaccharides‐zinc alleviates dextran sodium sulfate‐induced ulcerative colitis

Machine‐Learning‐Assisted Rational Design of Si─Rhodamine as Cathepsin‐pH‐Activated Probe for Accurate Fluorescence Navigation

Covalent Organic Framework with Donor¹‐Acceptor‐Donor² Motifs Regulating Local Charge of Intercalated Single Cobalt Sites for Photocatalytic CO₂ Reduction to Syngas

Covalent Organic Framework with Donor¹‐Acceptor‐Donor² Motifs Regulating Local Charge of Intercalated Single Cobalt Sites for Photocatalytic CO₂ Reduction to Syngas

Light and Heat‐Driven Flexible Solid Supramolecular Polymer Displaying Phosphorescence and Reversible Photochromism

Linking crustacean life history to fishery management controls and reference points

Integrated physiological, transcriptomic and metabolomic analyses reveal the mechanism of peanut kernel weight reduction under waterlogging stress

Pioglitazone reduces serum ketone bodies in sodium‐glucose cotransporter‐2 inhibitor‐treated non‐obese type 2 diabetes: A single‐centre, randomized, crossover trial

Wide‐Temperature and High‐Rate Operation of Lithium Metal Batteries Enabled by an Ionic Liquid Functionalized Quasi‐Solid‐State Electrolyte

Numerical modeling and experimental optimization of Taylor dispersion analysis with and without an electric field

Deciphering CD4⁺ T cell‐mediated responses against cancer

Detection and coverage estimation of purple nutsedge in turf with image classification neural networks

Outward foreign direct investment productivity along the belt and road

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