Search results for: Yuwei Chen

Items from 1 to 20 out of 98 results

article

Na_2.5Cr_0.5Zr_0.5Cl₆: A New Halide‐Based Fast Sodium‐Ion Conductor

Likuo Wang, Zhenyou Song, Xiaobing Lou, Yuwei Chen, more

Small > 20 > 28 > n/a - n/a

All‐solid‐state batteries employing solid electrolytes (SEs) have received widespread attention due to their high safety. Recently, lithium halides are intensively investigated as promising SEs while their sodium counterparts are less studied. Herein, a new sodium‐ion conductor with a chemical formula of Na_2.5Cr_0.5Zr_0.5C_l6 is reported, which exhibits high room temperature ionic conductivity of 0.1...

article

Polar Molecules Regulating the Regio‐ and Stereoselectivity of Polymerization of Conjugated Dienes Catalyzed by CGC‐Type Rare‐Earth Metal Catalysts

Zhijie Fu, Chuang Song, Chongan Chen, Yuanxia Qi, more

Macromolecular Rapid Communications > 45 > 7 > n/a - n/a

Herein, a concise, effective, and scalable strategy is reported that the introduction of polar molecules (PMs) (e.g., anisole (PhOMe), phenetole (PhOEt), 2‐methoxynaphthalene (NaphOMe), thioanisole (PhSMe), and N,N‐dimethylaniline (PhNMe₂)) as continuously coordinated neutral ligand of cationic active species in situ generated from the constrain‐geometry‐configuration–type rare‐earth metal complexes...

article

Effect of different anti‐cardiovascular disease treatments on the severity of obstructive sleep apnea

Ruihan Lin, Yuan Zhang, Wenjie Yan, Wenru Hu, more

Journal of Sleep Research > 33 > 2 > n/a - n/a

Obstructive sleep apnea (OSA) and cardiovascular co‐morbidities have a mutually reinforcing effect, but existing studies have focussed only on the improvement of the associated co‐morbidities by treatment for OSA. To provide fresh guidelines for the treatment of OSA from a co‐morbidity standpoint, we conducted a systematic search of Web of Science, PubMed, EMBASE, and the Cochrane Library for articles...

article

Electric field‐assisted preparation of PANI/TPU all‐organic composites with enhanced dielectric permittivity and anisotropic optical properties

Weifei Wu, Tianli Ren, Xueqing Liu, Kai Huai, more

Polymer Engineering & Science > 62 > 12 > 3945 - 3951

To meet the demands of multifunctional applications, developing functional composites with excellent properties (such as high dielectric permittivity, good mechanical properties, and anisotropic optical transmittance) is urgent. In this regard, preparing composites with all‐organic components is a promising strategy. Herein, we demonstrated a simple and time‐saving method for assembling and aligning...

article

Effect of sodium‐zinc EDTA and sodium gluconate as electrolyte additives on corrosion and discharge behavior of Mg as anode for air battery

Jun‐e Qu, Hongqin Luo, Zhanxiang Liu, Hairen Wang, more

Materials and Corrosion > 73 > 11 > 1776 - 1787

The corrosion inhibiting performance of EDTA‐ZnNa₂ and C₆H₁₁NaO₇ for pure magnesium in a 3.5 wt% NaCl electrolyte was investigated through electrochemical tests and surface microanalysis. And their effect on discharge behavior of Mg anode used for air battery was evaluated through constant‐current discharging tests. The inhibition performance varied with different additive concentrations and the maximum...

article

Scalable methods for directional assembly of fillers in polymer composites: Creating pathways for improving material properties

Anthony Griffin, Yuanhao Guo, Zhendong Hu, Jianming Zhang, more

Polymer Composites > 43 > 9 > 5747 - 5766

Polymer composites are ubiquitous and indispensable in numerous applications. Coupling the inclusion of reinforcing agents with methods developed to control filler distribution and orientation allow for significant enhancement in mechanical, thermal, electrical, and barrier/transport‐related properties of composites. For practical implementation, ideal approaches to fabricating polymer composites...

article

A simple route to prepare supramolecular block copolymers using telechelic polystyrene/polydimethylsiloxane pairs

Alejandro Güillen Obando, Yuwei Chen, Zhe Qiang

Polymer International > 71 > 4 > 470 - 477

While supramolecular block copolymer (BCP) self‐assembly has been widely studied over the past decades as an effective means to generate functional nanomaterials, most of these systems require multiple steps of synthesis and processing. In this report, we introduce a facile approach to form linear multiblock copolymers by directly blending telechelic homopolymer pairs, using di‐sulfonated polystyrene...

article

3D Printing Conductive Composites with Poly(ionic liquid) as a Noncovalent Intermedia to Fabricate Carbon Circuits

Xiaojie Lv, Jingjing Wang, Danning Ding, Jiaojiao Liang, more

Macromolecular Materials and Engineering > 306 > 12 > n/a - n/a

In this study, a kind of imidazole type poly(ionic liquid) ([PEP‐MIM]Cl) is synthesized, which can disperse carbon effectively. [PEP‐MIM]Cl is used as an intermediate to coat carbon on the poly(acrylic acid)(PAA‐co‐MBA) via ion exchange to obtain conductive polymer composite (CPC). A series of characterizations are performed. Experiments show that carbon can be coated on the PAA‐co‐MBA uniformly,...

article

Brahma‐Related Gene 1 Inhibition Prevents Liver Fibrosis and Cholangiocarcinoma by Attenuating Progenitor Expansion

Yongjie Zhou, Yuwei Chen, Xiaoyun Zhang, Qing Xu, more

Hepatology > 74 > 2 > 797 - 815

Background and Aims Intrahepatic cholangiocarcinoma (iCCA) is closely correlated with hepatic progenitor cell (HPC) expansion and liver fibrosis. Brahma‐related gene 1 (Brg1), an enzymatic subunit of the switch/sucrose nonfermentable complex that is critical in stem cell maintenance and tumor promotion, is prominently up‐regulated in both HPCs and iCCA; however, its role in this correlation remains...

article

Recombineering facilitates the discovery of natural product biosynthetic pathways in Pseudomonas parafulva

Wentao Zheng, Xue Wang, Yuwei Chen, Yachao Dong, more

Biotechnology Journal > 16 > 8 > n/a - n/a

Microbial natural products among other functions they play a vital role in the disease prevention in humans, animals and plants. Pseudomonas parafulva CRS01‐1 is a broad‐spectrum antagonistic bacterium present in plants. However, no natural products have been isolated from this strain till date. Corresponding biosynthetic gene clusters to natural products is an effective method for bioprospecting,...

article

N₂ and N₂O production and emission variation during the flood period of Poyang Lake (China)

Jingya Xue, Xiaolong Yao, Zhonghua Zhao, Xingyu Jiang, more

Aquatic Sciences > 2019 > 81 > 4 > 1-12

Lakes are globally important sites to alleviate nitrogen (N) concentrations through gaseous N production and emission, and hydro-geomorphological characteristics can influence the spatial variation, patterns, and efficiency of N removal in lakes. In this study, gaseous N removal via dinitrogen (N₂) and nitrous oxide (N₂O) production and emission in different hydro-geomorphological areas of Poyang...

article

Spatial and seasonal variation in N₂-fixing cyanobacteria in Poyang Lake from 2012 to 2016: roles of nutrient ratios and hydrology

Xia Liu, Kuimei Qian, Yuwei Chen, Xiaolong Wang

Aquatic Sciences > 2019 > 81 > 3 > 1-12

Large river floodplain systems provide a variety of societal, economic and biological benefits and are undergoing extensive and intensive environmental deterioration. Eutrophication coupled with undesired harmful cyanobacterial blooms is one of the most widespread and severe problems in floodplain ecosystems. However, our knowledge about cyanobacteria, particularly the biogeography of N₂-fixing (Nfix)...

article

Horizontal distribution of pelagic crustacean zooplankton biomass and body size in contrasting habitat types in Lake Poyang, China

Baogui Liu, Jinfu Liu, Erik Jeppesen, Yuwei Chen, more

Environmental Science and Pollution Research > 2019 > 26 > 3 > 2270-2280

To evaluate the possible effects of habitat type on crustacean plankton (hereafter zooplankton) biomass and body size, a 5-year study (2011 to 2015) was conducted during wet seasons in three habitats in Lake Poyang, China. The lacustrine habitat with the most stable hydrologic regime had the highest zooplankton biomass coinciding with the highest phytoplankton biomass. The riverine habitat with the...

article

Assessing river water quality using water quality index in Lake Taihu Basin, China

Zhaoshi Wu, Xiaolong Wang, Yuwei Chen, Yongjiu Cai, more

Science of The Total Environment > 2018 > 612 > C > 914-922

Lake Taihu Basin, one of the most developed regions in China, has received considerable attention due to its severe pollution. Our study provides a clear understanding of the water quality in the rivers of Lake Taihu Basin based on basin-scale monitoring and a water quality index (WQI) method. From September 2014 to January 2016, four samplings across four seasons were conducted at 96 sites along...

article

Promotion of the vapors from biomass vacuum pyrolysis for biofuels under Non-thermal Plasma Synergistic Catalysis (NPSC) system

Yongsheng Fan, Weidong Zhao, Shanshan Shao, Yixi Cai, more

Energy > 2018 > 142 > C > 462-472

Non-thermal Plasma Synergistic Catalysis (NPSC) was firstly proposed and employed in the upgrading of biomass pyrolysis vapors for preparation of biofuels. The effects of the three-way catalysis (non-thermal plasma, HZSM-5 body and modified components) on the bio-oil upgrading performance and catalyst stability were comprehensively investigated. Bio-oil yields continued to decrease, but the physicochemical...

article

Electrically tunable terahertz metamaterials based on graphene stacks array

Hanqing Liu, Peiguo Liu, Li-an Bian, Chenxi Liu, more

Superlattices and Microstructures > 2017 > 112 > C > 470-479

With the ability of tuning chemical potential via gate voltage, the permittivity of graphene stack can be dynamically adjusted over a wide range. In this paper, we design electrically tunable metamaterials based on the graphene/Al₂O₃ stacks array, which can achieve a good modulation of resonant frequency and peak value in terahertz region. Due to the enlargement of plasmonic resonance response and...

article

Multi-mode absorption in multi-cavity photonic crystal with two graphene monolayers

Li-an Bian, Peiguo Liu, Gaosheng Li, Yuwei Chen, more

Superlattices and Microstructures > 2017 > 112 > C > 303-310

Multi-mode absorption is achieved theoretically at terahertz frequencies by using the one-dimensional photonic crystal (PC) incorporating multiple Fabry-Perot resonance cavities. To simulate this multilayered structure, the method of rigorous coupled-wave analysis is adopted. Results show that for single-cavity PC with two graphene monolayers in this cavity, there are two near-unity absorption modes...

article

An overview of the laser ranging method of space laser altimeter

Hui Zhou, Yuwei Chen, Juha Hyyppä, Song Li

Infrared Physics & Technology > 2017 > 86 > C > 147-158

Space laser altimeter is an active remote sensing instrument to measure topographic map of Earth, Moon and planetary. The space laser altimeter determines the range between the instrument and laser footprint by measuring round trip time of laser pulse. The return pulse reflected from ground surface is gathered by the receiver of space laser altimeter, the pulsewidth and amplitude of which are changeable...

article

Evaluation of fingerprinting-based WiFi indoor localization coexisted with Bluetooth

Ling Pei, Jingbin Liu, Yuwei Chen, Ruizhi Chen, more

The Journal of Global Positioning Systems > 2017 > 15 > 1 > 1-12

WiFi and Bluetooth are two most commonly used short range wireless communication technologies. Recent years, with increasing number of WiFi and Bluetooth mobile terminals, tags, and other devices, a demand for integration and coexistence of these two technologies including their positioning function is booming. In this paper, we firstly investigate the interferences between WiFi and Bluetooth signals...

article

A Shoelace Antenna for the Application of Collision Avoidance for the Blind Person

Gaosheng Li, Zhihao Tian, Gui Gao, Liang Zhang, more

IEEE Transactions on Antennas and Propagation > 2017 > 65 > 9 > 4941 - 4946

A shoelace antenna for the application of collision avoidance for the blind person is proposed for the first time. A thin flexible metal wire is used to fabricate the antenna, which can run along with the shoelace without destroying the shoe or adding extra big structures. According to the investigations, to put the feeding probe at the bottom of the cross point is better than the locations around...

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INFONA - science communication portal

Search results for: Yuwei Chen

Na_2.5Cr_0.5Zr_0.5Cl₆: A New Halide‐Based Fast Sodium‐Ion Conductor

Polar Molecules Regulating the Regio‐ and Stereoselectivity of Polymerization of Conjugated Dienes Catalyzed by CGC‐Type Rare‐Earth Metal Catalysts

Effect of different anti‐cardiovascular disease treatments on the severity of obstructive sleep apnea

Electric field‐assisted preparation of PANI/TPU all‐organic composites with enhanced dielectric permittivity and anisotropic optical properties

Effect of sodium‐zinc EDTA and sodium gluconate as electrolyte additives on corrosion and discharge behavior of Mg as anode for air battery

Scalable methods for directional assembly of fillers in polymer composites: Creating pathways for improving material properties

A simple route to prepare supramolecular block copolymers using telechelic polystyrene/polydimethylsiloxane pairs

3D Printing Conductive Composites with Poly(ionic liquid) as a Noncovalent Intermedia to Fabricate Carbon Circuits

Brahma‐Related Gene 1 Inhibition Prevents Liver Fibrosis and Cholangiocarcinoma by Attenuating Progenitor Expansion

Recombineering facilitates the discovery of natural product biosynthetic pathways in Pseudomonas parafulva

N₂ and N₂O production and emission variation during the flood period of Poyang Lake (China)

Spatial and seasonal variation in N₂-fixing cyanobacteria in Poyang Lake from 2012 to 2016: roles of nutrient ratios and hydrology

Horizontal distribution of pelagic crustacean zooplankton biomass and body size in contrasting habitat types in Lake Poyang, China

Assessing river water quality using water quality index in Lake Taihu Basin, China

Promotion of the vapors from biomass vacuum pyrolysis for biofuels under Non-thermal Plasma Synergistic Catalysis (NPSC) system

Electrically tunable terahertz metamaterials based on graphene stacks array

Multi-mode absorption in multi-cavity photonic crystal with two graphene monolayers

An overview of the laser ranging method of space laser altimeter

Evaluation of fingerprinting-based WiFi indoor localization coexisted with Bluetooth

A Shoelace Antenna for the Application of Collision Avoidance for the Blind Person

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