المؤلفون: Honglian Zhang, Min Zhang, Li Li, Wei Dong, Qiyong Ren, Feng Xu, Yuanrui Wang, Tao Xu, Jicheng Liu

المصدر: Molecules, Vol 28, Iss 18, p 6473 (2023)

مصطلحات موضوعية: TLC-SERS, quinolones, residues, aquatic products, animal foods, Organic chemistry, QD241-441

الوصف: Residual quinolones in food that exceed their maximum residue limit (MRL) are harmful to human health. However, the existing methods used for testing these residues have limitations; so, we developed a new limit test method called TLC-SERS to rapidly determine the levels of residues of the following: enrofloxacin (A), ciprofloxacin (B), ofloxacin (C), fleroxacin (D), sparfloxacin (E), enoxacin (F), gatifloxacin (G), and nadifloxacin (H). The residues ware preliminarily separated via TLC. The tested compounds’ position on a thin-layer plate were labeled using their relative Rf under 254 nm ultraviolet light, and an appropriate amount of nanometer silver solution was added to the position. The silver on the plate was irradiated with a 532 nm laser to obtain the SERSs of the compounds. The results show significant differences in the SERS of the eight quinolones: the LODs of H, A, D, E, C, G, F, and B were 9.0, 12.6, 8.9, 19.0, 8.0, 8.7, 19.0, and 12.6 ng/mL, respectively; and the RSD was ≤4.9% for the SERS of each quinolone. The limit test results of 20 samples are consistent with those obtained via UPLC–MS/MS. The results indicate that TLC-SERS is a specific, sensitive, stable, and accurate method, providing a new reference for the rapid limit test of harmful residues in foods.

وصف الملف: electronic resource

العلاقة: https://www.mdpi.com/1420-3049/28/18/6473Test; https://doaj.org/toc/1420-3049Test

الوصول الحر: https://doaj.org/article/2a498ee5448c4aa0b309f99510a8f10aTest

المؤلفون: Jiayu Zhu, Ze Wang, Xinluo Song, Bangyao Zhao, Yafeng Li, Yuanrui Wang

المصدر: Micro & Nano Letters, Vol 16, Iss 1, Pp 90-96 (2021)

مصطلحات موضوعية: Chemical technology, TP1-1185, Materials of engineering and construction. Mechanics of materials, TA401-492

الوصف: Abstract In the presence of acetic acid as modulated agent, Keggin‐H3PW12O40 (K‐PW12) has been encapsulated into UIO‐66(Zr) by the solvothermal method. The as‐synthesized K‐PW12@UIO‐66(Zr) composite has further been characterized by PXRD, TG, FTIR, ICP‐AES, N2 isothermal adsorption, SEM and TEM. The results exhibit that Keggin‐H3PW12O40 is entrapped into the interior cage of UIO‐66(Zr) framework which is enlarged by losing terephthalic acid linker in the presence of acetic acid. K‐PW12@UIO‐66(Zr) composite can efficiently catalyse the esterification of methanol and oleic acid into biodiesel.

وصف الملف: electronic resource

العلاقة: https://doaj.org/toc/1750-0443Test

الوصول الحر: https://doaj.org/article/d1b9eb1f0e5546c19510f880b0825b37Test

المؤلفون: Yonghe Sun, Sanan Song, Dehai Xiao, Linfeng Gan, Yuanrui Wang

المصدر: ACS Omega, Vol 5, Iss 38, Pp 24262-24271 (2020)

مصطلحات موضوعية: Chemistry, QD1-999

وصف الملف: electronic resource

العلاقة: https://doaj.org/toc/2470-1343Test

الوصول الحر: https://doaj.org/article/a939eb85b1d74c5c982f6c557e3919bcTest

المؤلفون: Hao Lv, Huashan Yang, Yuanrui Wang

المصدر: PLoS ONE, Vol 15, Iss 5, p e0232695 (2020)

مصطلحات موضوعية: Medicine, Science

الوصف: BACKGROUND:The proliferation and osteogenic differentiation of human bone marrow mesenchymal stem cells (HBMScs) are modulated by a variety of microRNAs (miRNAs). SATB homeobox 2 (SATB2) is a critical transcription factor that contributes to maintain the balance of bone metabolism. However, it remains unclear how the regulatory relationship between miR-103 and SATB2 on HBMScs proliferation and osteogenic differentiation. METHODS:HBMScs were obtained from Cyagen Biosciences and successful induced osteogenic differentiation. The proliferation abilities of HBMScs after treatment with agomiR-103 and antagomiR-103 were assessed using a cell counting Kit-8 (CCK-8) assay, and osteogenic differentiation was determined using alizarin red S staining and alkaline phosphatase (ALP) activity assay. The expression levels of miR-103, SATB2, and associated osteogenic differentiation biomarkers, including RUNX family transcription factor 2 (RUNX2), bone gamma-carboxyglutamate protein (BGLAP), and secreted phosphoprotein 1 (SPP1), were evaluated using real-time qPCR and Western blot. The regulatory sites of miR-103 on SATB2 were predicted using bioinformatics software and validated using a dual luciferase reporter assay. The underlying mechanism of miR-103 on SATB2-medicated HBMScs proliferation and osteogenic differentiation were confirmed by co-transfection of antagomiR-103 and SATB2 siRNA. RESULTS:The expression of miR-103 in HBMScs after induction of osteogenic differentiation was reduced in a time-dependent way. Overexpression of miR-103 by transfection of agomiR-103 suppressed HBMScs proliferation and osteogenic differentiation, while silencing of miR-103 by antagomiR-103 abolished these inhibitory effects. Consistently, RUNX2, BGLAP and SPP1 mRNA and protein expression were decreased in agomiR-103 treated HBMScs compared with those in agomiR-NC group. Meanwhile, antagomiR-103 upregulated the mRNA and protein expression levels of RUNX2, BGLAP and SPP1 in HBMScs. Further studies revealed that SATB2 was a direct target gene of miR-103. BMSCs transfected with agomiR-103 exhibited significantly downregulated protein expression level of SATB2, whereas knockdown of miR-103 promoted it. Additionally, rescue assays confirmed that silencing of SATB2 partially reversed the effects of antagomiR-103 induced HBMScs proliferation and osteogenic differentiation. CONCLUSIONS:The present results suggested that miR-103 negatively regulates SATB2 to serve an inhibitory role in the proliferation and osteogenic differentiation of HBMScs, which sheds light upon a potential therapeutic target for treating bone-related diseases.

وصف الملف: electronic resource

العلاقة: https://doaj.org/toc/1932-6203Test

الوصول الحر: https://doaj.org/article/8ce1e38b292c4df3af30cee5feee46d9Test

المؤلفون: Yuanrui Wang, Xiao-Feng Wu

المصدر: Journal of Catalysis. 421:319-323

مصطلحات موضوعية: Physical and Theoretical Chemistry, Catalysis

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_________::756f4c74eb8073ea968f212e4315ddb1Test
https://doi.org/10.1016/j.jcat.2023.03.034Test

المؤلفون: Yiyan Gao, Yang Gao, Zhixin Zhang, Yuanrui Wang, Xiuyan Ren, Fei Jia, Guanghui Gao

المصدر: Journal of Materials Chemistry C. 10:12873-12882

مصطلحات موضوعية: Materials Chemistry, General Chemistry

الوصف: The hydrogel exhibited concurrently enhanced mechanical properties, freezing resistance, water retention ability and biocompatibility by introducing AMY, which could serve as a wearable sensor for monitoring human motions and physiological signals.

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_________::01de73a0ae9e46b7f40d7fd109869669Test
https://doi.org/10.1039/d2tc02205bTest

المؤلفون: Xiaohui Guo, Xue Yang, Wanli Liu, Shuai Zheng, Yuanrui Wang, Wei Hu, Baijun Liu

المصدر: High Performance Polymers. :095400832311625

مصطلحات موضوعية: Polymers and Plastics, Organic Chemistry, Materials Chemistry

الوصف: A novel nanocomposite proton-exchange membrane (PEM) was obtained by combined electrospinning and solution casting of a composite solution of sulfophenylated poly(ether ether ketone ketone) (SP-PEEKK) and maleic anhydride modified nanocellulose (MN). SP-PEEKK was prepared by polymerization between phenyl hydroquinone and 1,4-bis(4-fluorobenzoyl)benzene followed by post-sulfonation. Nanocellulose (NCC) was prepared by the acid treatment of MCC with sulfuric acid, and MN with carboxyl group was obtained by modifying NCC with maleic anhydride. PEMs with 2% MN (MN2) showed a water uptake of 28% at 100°C, which was higher than that of MN0 (with 0% MN content). MN2 possessed a high tensile strength of 48.7 MPa, Young’s modulus of 1.3 GPa, and elongation at break of 34%, which was 54%, 21%, and 16% higher than those of MN0, respectively. Thus, the ordered distributed of MN was illustrated to be the effective reinforcing material for SP-PEEKK membranes because of the strong interface between the hydroxyl group of rigid MN and the sulfonic acid group of SP-PEEKK. MN2 also had a substantially higher proton conductivity of 0.09 S cm−1 at 90°C than MN0 (0.037 S cm−1). Therefore, combined electrospinning and solution casting was found to be a promising choice to improve the proton conductivity of nanocomposite PEMs, as promoted by the three-dimensional hydrogen bond-proton-transport network formed by the well-oriented MN in SPEEKK produced by the electrospinning.

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_________::326d7dbe2ff879bfd920166638e76141Test
https://doi.org/10.1177/09540083231162515Test

المؤلفون: Yuanrui Wang, Guanghui Gao, Yang Gao, Shan Xia

المصدر: Science China Materials. 64:2313-2324

مصطلحات موضوعية: Polyacrylamide Hydrogel, Low modulus, Materials science, technology, industry, and agriculture, Nanotechnology, 02 engineering and technology, Adhesion, 010402 general chemistry, 021001 nanoscience & nanotechnology, complex mixtures, 01 natural sciences, 0104 chemical sciences, Gauge factor, Human–machine interface, General Materials Science, Adhesive, 0210 nano-technology

الوصف: Ionic hydrogel-based sensors have shined a spotlight on wearable electronics. However, the sensitivity and reliability of hydrogel devices are significantly hampered by the weak adhesion of skin-sensor interface as well as inferior temperature tolerance. Here, inspired by the structure and composition of dermis, a novel skin-attachable and environment-stable hydrogel was designed by integrating collagen into the LiCl-containing chemically cross-linked polyacrylamide hydrogel. The hydrogel exhibited skin-like mechanical properties of low modulus, superior stretchability as well as excellent elasticity. Furthermore, the introduction of collagen endowed the hydrogel with robust and seamless interfaces with diverse materials, including the curved skin. As a result, the hydrogel is capable of serving as a human-machine interface for collecting reliable electrocardiography (ECG) signals and discerning various human motions, with high sensitivity (gauge factor = 10.7), fast response, negligible hysteresis as well as extensive monitoring range. Notably, the hydrogel that can mimick the temperature-tolerant mechanism of most organisms possesses persistent stabilization of adhesive, conductive, sensory and mechanical performances at subzero or ambient conditions. The skin-inspired strategy paves an effective way for the design of multifunctional materials with potential applications in next-generation electronics.

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_________::f121cb7b4b5d68a4d78adfe0600b5022Test
https://doi.org/10.1007/s40843-020-1624-yTest

المؤلفون: Li Shicong, Liangliang Tong, Zhao Bangyao, Yuxin Zhang, Yuanrui Wang, Song Xinluo, Yafeng Li

المصدر: RSC Advances. 11:38016-38025

مصطلحات موضوعية: Biodiesel, food.ingredient, Materials science, General Chemical Engineering, Composite number, General Chemistry, Transesterification, Soybean oil, Catalysis, food, Chemical engineering, Specific surface area, Yield (chemistry), Thermal stability

الوصف: A polyoxometalate acid can be encapsulated into a metal–organic framework to construct a novel kind of solid-acid catalyst. In this work, the two-step method —high-temperature preparation of Zr6O4(OH)4(CH3COO)12 and low-temperature self-assembly—has been adopted to synthesize the PW12@UIO-66 composite (PW12 = H3PW12O40; UIO-66 = Zr6O4(OH)4(OOC–C6H4–COO)12). The as-synthesized PW12@UIO-66 composite exhibits highly crystalline, good octahedron morphology, large specific surface area (1960 m2 g−1) and high thermal stability (>500 °C), which clearly demonstrates the potential as a solid-acid catalyst. Additionally, the PW12@UIO-66 composite may be accomplished with 85% utilization of H3PW12O40 and 95% yield through this synthetic procedure. The performances of the PW12@UIO-66 composite are investigated by catalyzing the simultaneous transesterification and esterification of soybean oil into biodiesel. Under the optimal conditions, the conversion of the soybean oil into biodiesel would exceed 90% over the as-synthesized PW12@UIO-66 composite. As the crucial indexes for industrial prospects, the recycling and life experiments were surveyed. After 10 times recycling and 4 weeks, the structure and performance of the PW12@UIO-66 composite remained unchanged and in the meantime the PW12@UIO-66 composite still maintained a high activity to convert soybean oil into biodiesel.

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_________::72c8af209d67513ac00ec3c11b5bc2d0Test
https://doi.org/10.1039/d1ra06211eTest

المؤلفون: Ze Wang, Yafeng Li, Yuanrui Wang, Song Xinluo, Zhao Bangyao, Jiayu Zhu

المصدر: Micro & Nano Letters, Vol 16, Iss 1, Pp 90-96 (2021)

مصطلحات موضوعية: Biodiesel, Materials science, Chemical engineering, Chemical technology, Biomedical Engineering, TA401-492, General Materials Science, Bioengineering, TP1-1185, Condensed Matter Physics, Materials of engineering and construction. Mechanics of materials

الوصف: In the presence of acetic acid as modulated agent, Keggin‐H3PW12O40 (K‐PW12) has been encapsulated into UIO‐66(Zr) by the solvothermal method. The as‐synthesized K‐PW12@UIO‐66(Zr) composite has further been characterized by PXRD, TG, FTIR, ICP‐AES, N2 isothermal adsorption, SEM and TEM. The results exhibit that Keggin‐H3PW12O40 is entrapped into the interior cage of UIO‐66(Zr) framework which is enlarged by losing terephthalic acid linker in the presence of acetic acid. K‐PW12@UIO‐66(Zr) composite can efficiently catalyse the esterification of methanol and oleic acid into biodiesel.

الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::caf1e3c2423b31b9048c61eb88ddee7fTest
https://doaj.org/article/d1b9eb1f0e5546c19510f880b0825b37Test