Search results for: Yingchun Li

Items from 1 to 20 out of 205 results

article

Effects of the species of crosslinking reagents on the structures and properties of biodegradable poly (butanediol sebacate ‐ butanediol terephthalate) copolyester

Zhimao Li, Yingchun Li, Maoyong He, Wensheng Wang, more

Journal of Applied Polymer Science > 139 > 20 > n/a - n/a

In the present study, poly(butylene sebacate‐co‐terephthalate)s having different crosslinking reagents were synthesized with a random distribution by a two‐step esterification and one‐step polycondensation process. In detail, the using crosslinking agents were included trimethylolethane (TME), trimethylolpropane, tris(hydroxymethyl)aminoethane, glycerol (GL). Particularly, CS refers to a sample with...

article

Temperature‐Stress Bimodal Sensing Conductive Hydrogel‐Liquid Metal by Facile Synthesis for Smart Wearable Sensor

Chen Wang, Jie Li, Zhaozhou Fang, Zhirui Hu, more

Macromolecular Rapid Communications > 43 > 1 > n/a - n/a

Conductive hydrogels have attracted great attention due to their promising applications in wearable sensors. However, developing conductive hydrogels with excellent sensor properties and multiple stimuli responsiveness for smart wearable devices is still a challenge. This paper presents a facile synthetic method of a crosslinked chitosan quaternary ammonium salt and liquid metal (CHACC‐LM) composite...

article

Risk Stratification Based on Chronic Liver Failure Consortium Acute Decompensation Score in Patients With Child‐Pugh B Cirrhosis and Acute Variceal Bleeding

Yong Lv, Zhengyu Wang, Kai Li, Qiuhe Wang, more

Hepatology > 73 > 4 > 1478 - 1493

Background and Aims Optimal candidates for early transjugular intrahepatic portosystemic shunt (TIPS) in patients with Child‐Pugh B cirrhosis and acute variceal bleeding (AVB) remain unclear. This study aimed to test the hypothesis that risk stratification using the Chronic Liver Failure Consortium Acute Decompensation score (CLIF‐C ADs) may be useful to identify a subgroup at high risk of mortality...

article

Novel long noncoding RNA LINC02323 promotes cell growth and migration of ovarian cancer via TGF‐β receptor 1 by miR‐1343‐3p

Yingchun Li, Zheng Zhao, Dan Sun, Yanfei Li

Journal of Clinical Laboratory Analysis > 35 > 2 > n/a - n/a

Background This study was aimed at investigating the effects of long noncoding RNA (lncRNA) LINC02323 in ovarian cancer and its possible mechanism. Methods Microarray analysis and QPCR were utilized to identify lncRNA LINC02323 expression in patients with ovarian cancer. MTT assay was used for analysis of ovarian cancer cell proliferation. Western blot was utilized to investigate its possible mechanism...

article

Transient receptor potential vanilloid 4 activation inhibits the delayed rectifier potassium channels in hippocampal pyramidal neurons: An implication in pathological changes following pilocarpine‐induced status epilepticus

Li Zhou, Weixing Xu, Dong An, Sha Sha, more

Journal of Neuroscience Research > 99 > 3 > 914 - 926

Activation of transient receptor potential vanilloid 4 (TRPV4) can increase hippocampal neuronal excitability. TRPV4 has been reported to be involved in the pathogenesis of epilepsy. Voltage‐gated potassium channels (VGPCs) play an important role in regulating neuronal excitability and abnormal VGPCs expression or function is related to epilepsy. Here, we examined the effect of TRPV4 activation on...

article

Chain Extension, Phase Interface Reparation and Mechanical Property of Recycled Acrylonitrile‐Butadiene‐Styrene by Epoxidized Styrene‐Butadiene‐Styrene

Luosheng Shu, Yingchun Li, Jie Li, Wengsheng Wang, more

Macromolecular Materials and Engineering > 305 > 11 > n/a - n/a

The demand for processing recycled acrylonitrile‐butadiene‐styrene copolymer plastics (R‐ABS) grows fast. Herein, epoxidized styrene‐butadiene‐styrene (ESBS) with reactive groups including polybutadiene (PB) phase, epoxidized polybutadiene (EPB) phase and polystyrene phase is prepared by modifying SBS with an in situ peroxyformic acid method. Both chain extension and phase interface reparation of...

article

Thermal and water absorption properties of cyanate ester resins modified by fluoride‐containing and silicone‐containing components

Shixin Pei, Yue Han, Ying Guo, Jinshuai Liu, more

Polymers for Advanced Technologies > 31 > 6 > 1245 - 1255

In order to enhance the moisture resistance of cyanate ester resins, modifiers containing silicon or fluorine moieties were introduced. The curing behaviors of the obtained resins, as well as thermal, water absorption, and dielectric properties of all cured polymers, were investigated in detail. Results show that properties of fillers in polymer have great influence on the thermal property and of...

article

Mesoscale numerical study on the evolution of borehole breakout in heterogeneous rocks

Yingchun Li, Yaodong Qu, Qiangyuan He, Chunan Tang

International Journal for Numerical and Analytical Methods in Geomechanics > 44 > 8 > 1219 - 1236

Inherent heterogeneity of a rock strongly affects its mechanical behavior. We numerically study the mechanisms governing the initiation, propagation, and ultimate pattern of borehole breakouts in heterogeneous rocks. A two‐dimensional finite element model incorporating material heterogeneity is established to systematically examine the effects of several key factors on borehole failure, including...

article

Morphology, mechanical property, and processing thermal stability of PVC/La‐OMMTs nanocomposites prepared via in situ intercalative polymerization

Heyun Wang, Yingchun Li, Zhong Wei, Yanmei Song, more

Journal of Vinyl and Additive Technology > 26 > 1 > 97 - 108

Poly(vinyl chloride) (PVC) nanocomposites were prepared via an in situ intercalative suspension polymerization of vinyl chloride with four organic carboxylic acid salts (montmorillonite [MMT] units) containing thermally stable lanthanum ions. The effects of different lanthanum organic montmorillonites (La‐OMMTs) on the particle features and molecular weight were investigated. The transmission electron...

article

Alternating Multilayer Structural Epoxy Composite Coating for Corrosion Protection of Steel

Jiaoxia Zhang, Weirui Zhang, Liping Wei, Liuyue Pu, more

Macromolecular Materials and Engineering > 304 > 12 > n/a - n/a

Back Cover: In article number 1900374 by Jiaoxia Zhang, Jincheng Fan, Tao Ding, Zhanhu Guo, and co‐workers, an alternating multilayer structure is designed to obtain multifunctional epoxy resin composite coatings based on a stepwise coating method via adding graphene and α‐alumina. The toughness and the thermal conductivity are clearly increased, while the dielectric properties are decreased when...

article

Alternating Multilayer Structural Epoxy Composite Coating for Corrosion Protection of Steel

Jiaoxia Zhang, Weirui Zhang, Liping Wei, Liuyue Pu, more

Macromolecular Materials and Engineering > 304 > 12 > n/a - n/a

Epoxy composite coatings filled with fillers have been used extensively as anticorrosion materials. In this study, an alternating multilayer structure is designed to obtain multifunctional epoxy resin composite coating based on stepwise coating method via adding graphene and α‐alumina. Their mechanical properties, thermal conductivity, dielectric and anticorrosion properties are characterized. The...

article

Analytical modelling of the shear behaviour of rock joints with progressive degradation of two‐order roughness

Yingchun Li, Zhengzhao Liang, Chun'an Tang, Danqi Li, more

International Journal for Numerical and Analytical Methods in Geomechanics > 43 > 17 > 2687 - 2703

We present an analytical model for the shear behaviour of rock joints with progressive degradation of two‐order asperities including waviness and unevenness. Critical waviness and critical unevenness are used to respectively represent the mechanical involvements of waviness and unevenness during shear. The degradation process of two‐order asperities are predicted by considering the stepwise relationship...

article

Simultaneous determination of paracetamol and p-aminophenol using glassy carbon electrode modified with nitrogen- and sulfur- co-doped carbon dots

Jingjing Wang, Hua Zhang, Junhong Zhao, Ruyue Zhang, more

Microchimica Acta > 2019 > 186 > 11 > 1-9

Walnut shell was processed for preparing nanoporous carbon, which further underwent element doping in order to boost its performance. A novel electrochemical sensor was then built by using the nitrogen and sulfur co-doped walnut shell carbon (N,S-WSC). Morphology and microstructure of the materials were characterized by scanning electron microscopy and Brunauer-Emmett-Teller (de)sorption which showed...

article

Retracted: Notoginsenoside R1 protects WI‐38 cells against lipopolysaccharide‐triggered injury via adjusting the miR‐181a/TLR4 axis

Daolin Qian, Xiankun Shao, Yingchun Li, Xinyan Sun

Journal of Cellular Biochemistry > 120 > 12 > 19764 - 19774

Notoginsenoside R1 (NGR1) is a neoteric phytoestrogen extracted from Panax notoginseng, and possesses comprehensive pharmacological functions in multitudinous ailments. But, whether NGR1 is utilized in neonatal pneumonia is not clear. This research study aspired to disclose the protective activity of NGR1 in neonatal pneumonia. WI‐38 cells were co‐stimulated with NGR1 and lipopolysaccharide (LPS,...

article

Enhanced through‐plane thermal conductivity of polyamide 6 composites with vertical alignment of boron nitride achieved by fused deposition modeling

Yi Geng, Hui He, Yunchao Jia, Xiaodong Peng, more

Polymer Composites > 40 > 9 > 3375 - 3382

Thermally conductive composites consisting of polymer/boron nitride (BN) fabricated by conventional molding method can hardly achieve high through‐plane thermal conductivities (TPTCs) because the alignment of BN sheets would orient along the direction of melt flow. Based on the characteristics of fused deposition modeling (FDM), we design three printing methods to research on the orientation of BN...

article

Friction and Wear of MoO₃/Graphene Oxide Modified Glass Fiber Reinforced Epoxy Nanocomposites

Yuxin He, Qiuyu Chen, Hu Liu, Li Zhang, more

Macromolecular Materials and Engineering > 304 > 8 > n/a - n/a

Front Cover: In article number 1900166 by Yuxin He, Hu Liu, and co‐workers, graphene oxide (GO) wrapped MoO₃ (MoO₃‐GO) nanocomposites are prepared by a hydrothermal method. Highly flexible, binder‐free, MoO₃ nanobelt/graphene oxide film (f‐MoO₃‐GO) is prepared by vacuum filtration technique. f‐MoO₃‐GO modified GF/EP (f‐MoO₃‐GO/GF/EP) composites are prepared by vacuum resin transfer mold (VARTM), which...

article

Friction and Wear of MoO₃/Graphene Oxide Modified Glass Fiber Reinforced Epoxy Nanocomposites

Yuxin He, Qiuyu Chen, Hu Liu, Li Zhang, more

Macromolecular Materials and Engineering > 304 > 8 > n/a - n/a

In order to further improve the tribological performance of glass fiber reinforced epoxy (GF/EP) composites, highly flexible, binder‐free, molybdenum trioxide MoO₃ nanobelt/graphene oxide (GO) film (f‐MoO₃‐GO) is prepared by a hydrothermal method. Herein, f‐MoO₃‐GO is adopted to modify GF/EP composites prepared through the vacuum‐assisted resin transfer molding method. The neat GF/EP and MoO₃‐GO modified...

article

Flexible Sandwich Structural Strain Sensor Based on Silver Nanowires Decorated with Self‐Healing Substrate

Dawei Jiang, Ying Wang, Bin Li, Caiying Sun, more

Macromolecular Materials and Engineering > 304 > 7 > n/a - n/a

Flexible and stretchable conducting composites that can sense stress or strain are needed for several emerging fields including human motion detection and personalized health monitoring. Silver nanowires (AgNWs) have already been used as conductive networks. However, once a traditional polymer is broken, the conductive network is subsequently destroyed. Integrating high pressure sensitivity and repeatable...

article

Synthesis and Characterization of Hydrophilic Trityl Radical TFO for Biomedical and Biophysical Applications

Yuying Qu, Yingchun Li, Xiaoli Tan, Weixiang Zhai, more

Chemistry – A European Journal > 25 > 33 > 7888 - 7895

Tetrathiatriarylmethyl (TAM, trityl) radicals have found wide applications as spin probes/labels for EPR spectroscopy and imaging, and as polarizing agents for dynamic nuclear polarization. The high hydrophilicity of TAM radicals is essential for their biomedical applications. However, the synthesis of hydrophilic TAM radicals (e.g., OX063) is extremely challenging and has only been reported in the...

article

Numerical Study on Anisotropy of the Representative Elementary Volume of Strength and Deformability of Jointed Rock Masses

Zhengzhao Liang, Na Wu, Yingchun Li, Hong Li, more

Rock Mechanics and Rock Engineering > 2019 > 52 > 11 > 4387-4402

Representative elementary volume (REV) is a significant parameter in analyzing the size effect and the continuous media theory of natural jointed rock masses. Generalized RVEs, which include the REV of jointed rock masses (RREV) and the REV of mechanical parameters of jointed rock masses (PREV), were introduced and investigated based on the anisotropy of natural jointed rock masses. A two-dimensional...

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INFONA - science communication portal

Search results for: Yingchun Li

Effects of the species of crosslinking reagents on the structures and properties of biodegradable poly (butanediol sebacate ‐ butanediol terephthalate) copolyester

Temperature‐Stress Bimodal Sensing Conductive Hydrogel‐Liquid Metal by Facile Synthesis for Smart Wearable Sensor

Risk Stratification Based on Chronic Liver Failure Consortium Acute Decompensation Score in Patients With Child‐Pugh B Cirrhosis and Acute Variceal Bleeding

Novel long noncoding RNA LINC02323 promotes cell growth and migration of ovarian cancer via TGF‐β receptor 1 by miR‐1343‐3p

Transient receptor potential vanilloid 4 activation inhibits the delayed rectifier potassium channels in hippocampal pyramidal neurons: An implication in pathological changes following pilocarpine‐induced status epilepticus

Chain Extension, Phase Interface Reparation and Mechanical Property of Recycled Acrylonitrile‐Butadiene‐Styrene by Epoxidized Styrene‐Butadiene‐Styrene

Thermal and water absorption properties of cyanate ester resins modified by fluoride‐containing and silicone‐containing components

Mesoscale numerical study on the evolution of borehole breakout in heterogeneous rocks

Morphology, mechanical property, and processing thermal stability of PVC/La‐OMMTs nanocomposites prepared via in situ intercalative polymerization

Alternating Multilayer Structural Epoxy Composite Coating for Corrosion Protection of Steel

Alternating Multilayer Structural Epoxy Composite Coating for Corrosion Protection of Steel

Analytical modelling of the shear behaviour of rock joints with progressive degradation of two‐order roughness

Simultaneous determination of paracetamol and p-aminophenol using glassy carbon electrode modified with nitrogen- and sulfur- co-doped carbon dots

Retracted: Notoginsenoside R1 protects WI‐38 cells against lipopolysaccharide‐triggered injury via adjusting the miR‐181a/TLR4 axis

Enhanced through‐plane thermal conductivity of polyamide 6 composites with vertical alignment of boron nitride achieved by fused deposition modeling

Friction and Wear of MoO₃/Graphene Oxide Modified Glass Fiber Reinforced Epoxy Nanocomposites

Friction and Wear of MoO₃/Graphene Oxide Modified Glass Fiber Reinforced Epoxy Nanocomposites

Flexible Sandwich Structural Strain Sensor Based on Silver Nanowires Decorated with Self‐Healing Substrate

Synthesis and Characterization of Hydrophilic Trityl Radical TFO for Biomedical and Biophysical Applications

Numerical Study on Anisotropy of the Representative Elementary Volume of Strength and Deformability of Jointed Rock Masses

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