358 results on '"Zhao, Junmei"'
Search Results
152. Superior Na-Storage Performance of Low-Temperature-Synthesized Na3(VO1− xPO4)2F1+2 x (0≤ x≤1) Nanoparticles for Na-Ion Batteries.
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Qi, Yuruo, Mu, Linqin, Zhao, Junmei, Hu, Yong ‐ Sheng, Liu, Huizhou, and Dai, Sheng
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SODIUM ions ,PERFORMANCE of storage batteries ,NANOPARTICLE synthesis ,TRANSITION metal oxides ,X-ray diffraction - Abstract
Na-ion batteries are becoming comparable to Li-ion batteries because of their similar chemical characteristics and abundant sources of sodium. However, the materials production should be cost-effective in order to meet the demand for large-scale application. Here, a series of nanosized high-performance cathode materials, Na
3 (VO1− x PO4 )2 F1+2 x (0≤ x≤1), has been synthesized by a solvothermal low-temperature (60-120 °C) strategy without the use of organic ligands or surfactants. The as-synthesized Na3 (VOPO4 )2 F nanoparticles show the best Na-storage performance reported so far in terms of both high rate capability (up to 10 C rate) and long cycle stability over 1200 cycles. To the best of our knowledge, the current developed synthetic strategy for Na3 (VO1− x PO4 )2 F1+2 x is by far one of the least expensive and energy-consuming methods, much superior to the conventional high-temperature solid-state method. [ABSTRACT FROM AUTHOR]- Published
- 2015
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153. A phase-transfer assisted solvo-thermal strategy for low-temperature synthesis of Na3(VO1−xPO4)2F1+2x cathodes for sodium-ion batteries.
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Zhao, Junmei, Mu, Linqin, Qi, Yuruo, Hu, Yong-Sheng, Liu, Huizhou, and Dai, Sheng
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SODIUM channel blockers , *MONOVALENT cations , *ELECTRON tubes , *CATHODE rays , *ALKALI metal ions - Abstract
We demonstrate that a series of high-performance cathode materials, sodium vanadium polyanionic compounds, Na3(VO1−xPO4)2F1+2x (x = 0, 0.5 and 1), can be synthesized by a phase-transfer assisted solvo-thermal strategy at a rather low temperature (80–140 °C) in one simple step, exhibiting a high Na storage capacity of ca. 120 mA h g−1 and excellent cycling performance. This study makes a significant step to extend this strategy to the synthesis of functional materials from simple binary to complex multicomponent compounds. [ABSTRACT FROM AUTHOR]
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- 2015
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154. Extraction of Rare Earths(III) from Nitrate Medium with Di‐(2‐ethylhexyl) 2‐ethylhexyl Phosphonate and Synergistic Extraction Combined with 1‐Phenyl‐3‐Methyl‐4‐Benzoy l‐Pyrazolone‐5
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Zhao, Junmei, primary, Bai, Yan, additional, Li, Deqian, additional, and Li, Wei, additional
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- 2006
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155. Synergistic extraction of rare earths(III) from chloride medium with mixtures of 1-phenyl-3-methyl-4-benzoyl-pyrazalone-5 and di-(2-ethylhexyl)-2-ethylhexylphosphonate
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Zhao, Junmei, primary, Meng, Shulan, additional, and Li, Deqian, additional
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- 2006
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156. Coordination Reactions in the Extraction of Cerium(IV) and Fluorine(I) by DEHEHP from Mixed Nitric Acid and Hydrofluoric Acid Solutions
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Zhao, Junmei, primary, Meng, Shulan, additional, and Li, Deqian, additional
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- 2004
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157. Liquid–Liquid Extraction of Cerium(IV) from Nitric Acid Media by Di‐(2‐Ethylhexyl) 2‐Ethylhexyl Phosphonate (DEHEHP)
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Zhao, Junmei, primary, Meng, Shulan, additional, and Li, Deqian, additional
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- 2004
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158. Effects of Vitamin C Supplementation on Performance, Iron Status and Immune Function of Weaned Piglets
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Zhao, Junmei, primary, Li, Defa, additional, Piao, Xiangshu, additional, Yang, Wenjun, additional, and Wang, Fenglai, additional
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- 2002
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159. Adsorption of rare earths ( III) by calcium alginate-poly glutamic acid hybrid gels.
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Wang, Fuchun, Zhao, Junmei, Wei, Xuetuan, Huo, Fang, Li, Wensong, Hu, Qiaoyu, and Liu, Huizhou
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RARE earth metals ,CALCIUM alginate ,GREEN technology ,POLYGLUTAMIC acid ,DOPING agents (Chemistry) ,ADSORPTION capacity - Abstract
BACKGROUND Adsorption is believed to be an effective and green technology for the removal and recovery of rare earths ( III) from dilute solution. RESULTS A novel hybrid gel, abbreviated as ALG-PGA, has been prepared through crosslinking calcium alginate ( ALG) and γ-poly glutamic acid ( PGA), and its adsorption behavior towards whole rare earths ( III) has been examined. Taking Nd( III) as a representative element, the adsorption capacity, kinetics, reusability, selectivity and mechanism have been investigated. Cation exchange is proposed as a possible adsorption mechanism. Doping PGA molecules into calcium alginate beads can significantly enhance the adsorption capacity and the selectivity of rare earths from non-rare earths. The maximum adsorption capacity obtained for Nd( III) was 1.65 mmol g
−1 . Reutilization of ALG-PGA gel was confirmed for up to eight consecutive sorption-desorption cycles with no damage to the gel. CONCLUSION The prepared biosorbent, ALG-PGA, was biocompatible and cost effective with a good adsorption ability for Nd( III), and provides a new approach to the recovery of rare earths ( III) from rare earths-containing wastewater. © 2013 Society of Chemical Industry [ABSTRACT FROM AUTHOR]- Published
- 2014
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160. Selective extraction of vanadium from chromium by pure [C8mim][PF6]: An anion exchange process.
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Hu, Qiaoyu, Zhao, Junmei, Wang, Fuchun, Huo, Fang, and Liu, Huizhou
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EXTRACTION (Chemistry) , *VANADIUM , *CHROMIUM , *ION exchange (Chemistry) , *IONIC liquids , *CHEMICAL processes - Abstract
Highlights: [•] The maximum β V/Cr by pure [C8mim][PF6] was 100.6 in case of pH 3.5. [•] The extraction mechanism could be the anion exchange between HV10O27 3− and PF6 −. [•] A novel approach to prepare ionic liquids with metal oxo-anions as counter anion. [•] Vanadate-loaded IL phase can be quantitatively stripped by KPF6 and NaOH. [•] Pure [C8mim][PF6] could be used to recover V(V) from Cr(VI)-containing solutions. [Copyright &y& Elsevier]
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- 2014
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161. DistributionBehaviors of Light Rare Earths by Di-(2-ethylhexyl)2-Ethylhexyl Phosphonate in Kerosene under the Action of aSelf-Salting-Out Effect.
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Zhao, Junmei, Huo, Fang, Pan, Feng, Li, Deqian, and Liu, Huizhou
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RARE earth metals , *PHOSPHONATES , *KEROSENE , *SALTING out (Chemistry) , *IONIC strength , *ADDITION reactions , *EXTRACTION (Chemistry) , *SEPARATION (Technology) - Abstract
Neutralorganophosphates have been used for the extraction andseparation of rare earths, usually with the addition of an extra salting-outreagent to achieve the necessary high ionic strength. In this work,we propose a novel approach to extraction from rare earth solutionswith fairly high concentrations without an extra salting-out reagent.The distribution behaviors of La, Pr, and Nd in a nitrate solutionextracted with di-(2-ethylhexyl) 2-ethylhexyl phosphonate (DEHEHP)in kerosene under the action of a self-salting-out effect were investigated,including the extraction mechanism, extracted species, extractionisotherms, and effects of acidity and temperature. The obtained resultsshow that the extraction species probably is RE(NO3)3·1.5DEHEHP according to the slope analysis method andthe saturation extraction method. Considering the other coexistinglight rare earths, such as Ce and Sm, the separation factors werealso examined through a comparison of the two commercial extractantsP350 and TBP. The extraction selectivity for DEHEHP under the actionof the self-salting-out effect is much higher than that of TBP butjust slightly below that of P350. Finally, it can be concluded thatthe current system using DEHEHP as an extractant under the actionof the self-salting-out effect shows good prospects for the purificationof La from other light rare earths. [ABSTRACT FROM AUTHOR]
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- 2014
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162. O-carboxymethyl chitosan entrapped by silica: preparation and adsorption behaviour toward neodymium (III) ions.
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Wang, Fuchun, Zhao, Junmei, Zhou, Huacong, Li, Wensong, Sui, Na, and Liu, Huizhou
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BACKGROUND: The recovery of neodymium from dilute solutions has become important because of its wide application in industry. This work reports the preparation of novel carboxymethyl chitosan adsorbents entrapped by silica (SiO
2 /CMCH) and their application for adsorption of neodymium(III) ions from aqueous solution. RESULTS: The effect of the CMCH content, equilibrium pH (pHe ), contact time, initial concentrations of Nd(III) and temperature on the adsorption was investigated. The amount of Nd(III) adsorption increases with increasing pHe , which can be explained by the pH-titration curve of CMCH. Temperature has a positive effect on Nd(III) adsorption, and the amount adsorbed is 53.04 mg g−1 dry adsorbent or 434.75 mg g−1 CMCH at 328 K. Adsorption kinetics and isotherm can be described by the pseudo-second-order model and Langmuir equation. Both complexation and ion exchange mechanisms are believed to play an important role in Nd(III) adsorption, and possible coordination between CMCH and Nd(III) is speculated. Complete desorption can be reached when the concentration of HCl is more than 0.1 mol L−1 . CONCLUSION: A novel method was developed to prepare SiO2 /CMCH adsorbents through a one-step sol-gel strategy. The prepared adsorbents were biocompatible and non-toxic with a good adsorption ability for Nd(III), and could be used for adsorptive recovery of Nd(III) from aqueous solutions. © 2012 Society of Chemical Industry [ABSTRACT FROM AUTHOR]- Published
- 2013
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163. Size-controlled synthesis and morphology evolution of bismuth trifluoride nanocrystals via a novel solvent extraction route.
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Zhao, Junmei, Pan, Huilin, He, Xiang, Wang, Yuesheng, Gu, Lin, Hu, Yong-Sheng, Chen, Liquan, Liu, Huizhou, and Dai, Sheng
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- 2013
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164. A General Phase-TransferProtocol for Mineral Acidsand Its Application in the Large-Scale Synthesis of Highly NanoporousIron Phosphate in Nonaqueous Solvent.
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Zhao, Junmei, Ma, Jie, Jian, Zelang, Hu, Yongsheng, and Liu, Huizhou
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PHASE-transfer catalysis , *MINERALS , *POROUS materials , *PHOSPHATES , *NANOSTRUCTURED materials synthesis , *SOLUTION (Chemistry) , *REVERSED micelles , *TRANSMISSION electron microscopy - Abstract
As a general protocol for transferring mineral acidsfrom an aqueoussolution to an organic phase, mineral acids are extracted with secondarycarbon primary amine (C9–11)2CHNH2(commercial code: N1923) into an organic phase (e.g., heptaneor benzene) because of the complexation reaction and the formationof typical reversed micelles. Based on this principle, a novel approachfor a large-scale synthesis of highly nanoporous iron phosphate particlesis developed via the formed RNH3+/H2PO4–(H2O)/oil reversed micellesystem and ethanol–Fe3+solutions. Synthetic conditions,such as H3PO4concentration in reversed micellesand Fe3+concentration in ethanol–Fe3+solution are investigated and optimized. The product is characterizedusing transmission electron microscopy, Brunauer–Emett–Teller,thermogravimetric analysis, X-ray diffraction, and Fourier transforminfrared spectroscopy. The as-obtained iron phosphate is flocculentand highly porous, exhibiting a high reported surface area of 144m2/g. The synthetic procedure is relatively simple andis suitable for large-scale fabrication, and the used organic aminescan be recycled. The power of this approach is demonstrated usingother kinds of organic amines, such as tri-n-octylamine (TOA) andtri-C8–10-alkylmethyl ammonium chloride (N263),as phase-transfer reagents exhibiting promising application in thesynthesis of highly nanoporous materials. [ABSTRACT FROM AUTHOR]
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- 2012
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165. Disodium Terephthalate (Na2C8H4O4) as High Performance Anode Material for Low-Cost Room-Temperature Sodium-Ion Battery.
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Zhao, Liang, Zhao, Junmei, Hu, Yong-Sheng, Li, Hong, Zhou, Zhibin, Armand, Michel, and Chen, Liquan
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- 2012
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166. EFFECTS OF VITAMIN C SUPPLEMENTATION ON PERFORMANCE, IRON STATUS AND IMMUNE FUNCTION OF WEANED PIGLETS.
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Zhao, Junmei, Li, Defa, Xiangshu Piao, Wenjun Yang, and Fenglai Wang
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VITAMIN C , *LIVESTOCK - Abstract
Evaluates the effects of vitamin C supplementation on performance, iron status and immune function of pigs during the post-weaning period. Materials and methods; Results; Discussion of findings.
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- 2002
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167. The test and study of Influencing the intensity of the solid excitant slag fly and ash Geopolymer.
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Zhao Junmei
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- 2011
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168. Comprehensive Studies on the Hydrothermal Strategy for the Synthesis of Na3(VO1−xPO4)2F1+2x (0 ≤ x ≤ 1) and their Na‐Storage Performance.
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Qi, Yuruo, Zhao, Junmei, Yang, Chao, Liu, Huizhou, and Hu, Yong‐Sheng
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SODIUM ions , *STORAGE batteries , *ELECTROCHEMICAL analysis - Abstract
Sodium vanadium fluorophosphate, Na3(VO1−xPO4)2F1+2x (0 ≤ x ≤ 1), is proved to be a series of very promising cathode materials for Na‐ion batteries, owing to the high operating voltage and structural stability. However, the selective preparation of phase‐pure Na3(VO1−xPO4)2F1+2x (0 ≤ x ≤ 1) with outstanding electrochemical performance still remains a big challenge. Moreover, there are lots of discrepancies concerning the Na‐storage properties, including a diversity of voltage profiles and capacities reported, based on the variety of synthetic methods. Herein, a comprehensive investigation is conducted about the fabrication of phase‐pure Na3(VO1−xPO4)2F1+2x (0 ≤ x ≤ 1) by employing different starting materials and corresponding synthetic conditions, based on a facile low‐temperature hydrothermal strategy. Results show that the pH in the reaction system may be of vital importance for the successful preparation of Na3(VO1−xPO4)2F1+2x (0 ≤ x ≤ 1) with special microarchitecture. Furthermore, it is found that NaH2PO4·2H2O is the most appropriate phosphorus source, while VCl3, VOSO4·xH2O, and NH4VO3 are the best choices of vanadium sources to prepare Na3(VO1−xPO4)2F1+2x (0 ≤ x ≤ 1) with superior Na‐storage performance. This is the first time that the underlying correlations between the starting materials and the Na‐storage performance, are investigated and further that guidance for the selective synthesis of phase‐pure Na3(VO1−xPO4)2F1+2x (0 ≤ x ≤ 1) with superior performance is provided. The pH value is of vital importance for the successful preparation and micro‐texture of sodium vanadium fluorophosphate. Moreover, its electrochemical performance is closely related to the pH values. The discharge capacity significantly decreases following the sequence of H3PO4, NaH2PO4•2H2O, Na2HPO4•12H2O, Na3PO4. Samples obtained using NaH2PO4•2H2O show excellent cycling performance and rate capability for any vanadium sources. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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169. Effect of mGluR7 on proliferation of human embryonic neural stem cells.
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Zhang, Jing, Zhao, Junmei, Chen, Yani, Shi, Haiyan, Huang, Xiaoyong, Wang, Yanfeng, Wang, Yu, Wei, Yameng, Xue, Wanjuan, Han, Jiming, and Prieto., Aleph
- Published
- 2019
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170. Effects of the Supplementation of Essential Oil Mixtures on Growth Performance, Nutrient Digestibility, Immune Status and Microbial Community in Weaned Piglets.
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Li, Yingying, Cao, Hongrui, Zhang, Shuya, Guo, Pengfei, Zhao, Junmei, Zhang, Drangon, and Zhang, Shuai
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NUTRIENT density , *ESSENTIAL oils , *IMMUNITY , *PIGLETS , *FEED analysis , *IMMUNOGLOBULIN G - Abstract
Simple Summary: Plant essential oils possess antibacterial, antioxidant, and anti-inflammatory properties, as well as a natural safety profile, thereby making them a plausible alternative to high-dose zinc oxide (ZnO) in the diets of weaned piglets. This study aimed to evaluate the effects of the supplementation of different essential oil mixtures on growth performance, nutrient digestibility, immune status, and microbial community in weaned piglets. The results of this investigation indicate that the dietary supplementation of a combination of low-dose ZnO with essential oil mixtures can enhance the growth performance and intestinal health of weaned piglets, thereby positively regulating microbial density, lowering the incidence of diarrhea, and fostering a favorable condition for intestinal digestive function. Based on this, it is reasonable to suggest that the inclusion of essential oil mixtures and low-dose ZnO in the diets of weaned piglets can serve as a viable substitute for pharmacological dosages of ZnO. Since essential oils—such as cinnamaldehyde, thymol, carvacrol, and eugenol—have antibacterial, antioxidant, and anti-inflammatory properties, this study aimed to examine the supplementation of different essential oil mixtures together with 1600 mg/kg zinc oxide (ZnO) on growth performance, incidence of diarrhea, serum immune indices, fecal volatile fatty acids, and microflora structure in weaned piglets. A total of 240 weaned piglets (Duroc × Landrace × Yorkshire) with an average body weight of 8.85 ± 0.21 kg were randomly allocated to 30 pens (6 pens per diet, 4 males and 4 females per pen). Five different experimental diets were prepared and administered for 28 days: (i) a control diet (C), a corn–soybean basal diet without antibiotics, ZnO, or a supplementation of growth promoters; (ii) a control diet with 400 mg/kg essential oil mixtures 1 (EOM1); (iii) a control diet supplemented with ZnO at 1600 mg/kg (Z); (iv) a diet incorporating the Z diet with the addition of essential oil mixtures 1 at 400 mg/kg (ZOM1); and (v) a diet incorporating the Z diet with the addition of essential oil mixtures 2 at 400 mg/kg (ZOM2). During day (d) 14–28 and d 1–28 of the experiment, the average daily gain (ADG) in piglets in the ZOM1 and ZOM2 groups were higher (p < 0.05) compared to the C group. The diarrhea incidence of the Z, ZOM1, and ZOM2 groups were significantly decreased (p < 0.05), and the piglets of the ZOM1 group exhibited the lowest diarrhea incidence throughout the trial period. Additionally, the apparent total tract digestibility (ATTD) of neutral detergent fiber (NDF), acid detergent fiber (ADF), ash, organic matter (OM), and ether extract (EE) were higher than those fed the Z diet, and higher levels of NDF, ADF, and crude protein (CP) were observed in groups other than those fed the ZOM1 diet (p < 0.01). On d 14, the pigs fed EOM1 and ZOM2 diets showed a somewhat lower (p < 0.1) immunoglobulin G (lgG) level in serum than those fed the C diet. Additionally, the IL-8 level in serum in the ZOM1 group tended to be higher than that in the other groups (p < 0.1). The piglets fed the ZOM1 diet showed a tendency of lower (p = 0.05) acetate concentration in feces on d 14. Principal co-ordinates analysis (PCoA) showed significant differences (p < 0.05) in the composition of fecal microbial communities among the groups. Dietary EOM1 significantly increased the number of fecal bacteroides (p < 0.05) and tended to increase the number of Prevotella (p < 0.1). Therefore, EOM1 combined with 1600 mg/kg ZnO tends to reduce diarrhea incidence, tends to improve the fecal microbial community structure and growth performance of weaned piglets, and has the potential to replace pharmacological dosages of ZnO. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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171. Sufficient Utilization of Mn2+/Mn3+/Mn4+ Redox in NASICON Phosphate Cathodes towards High‐Energy Na‐Ions Batteries.
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Xu, Chunliu, Hua, Weibo, Zhang, Qinghua, Liu, Yuan, Dang, Rongbin, Xiao, Ruijuan, Wang, Jin, Chen, Zhao, Ding, Feixiang, Guo, Xiaodong, Yang, Chao, Yang, Liangrong, Zhao, Junmei, and Hu, Yong‐Sheng
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SUPERIONIC conductors , *CATHODES , *ENERGY density , *OXIDATION-reduction reaction , *PHOSPHATES , *ELECTRIC batteries , *POLYSULFIDES - Abstract
Na superionic conductor of Na3MnTi(PO4)3 only containing high earth‐abundance elements is regarded as one of the most promising cathodes for the applicable Na‐ion batteries due to its desirable cycling stability and high safety. However, the voltage hysteresis caused by Mn2+ ions resided in Na+ vacancies has led to significant capacity loss associated with Mn reaction centers between 2.5–4.2 V. Herein, the sodium excess strategy based on charge compensation is applied to suppress the undesirable voltage hysteresis, thereby achieving sufficient utilization of the Mn2+/Mn3+ and Mn3+/Mn4+ redox couples. These findings indicate that the sodium excess Na3.5MnTi0.5Ti0.5(PO4)3 cathode with Ti4+ reduction has a lowest Mn2+ occupation on the Na+ vacancies in its initial composition, which can improve the kinetics properties, finally contributing to a suppressed voltage hysteresis. Based on these findings, it is further applied the sodium excess route on a Mn‐richer phosphate cathode, which enables the suppressed voltage hysteresis and more reversible capacity. Consequently, this developed Na3.6Mn1.15Ti0.85(PO4)3 cathode achieved a high energy density over 380 Wh kg−1 (based on active substance mass of cathode) in full‐cell configurations, which is not only superior to most of the phosphate cathodes, but also delivers more application potential than the typical oxides cathodes for Na‐ion batteries. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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172. Ionic liquid-based synergistic extraction of rare earths nitrates without diluent: Typical ion-association mechanism.
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Xiong, Ying, Kuang, Wangqiang, Zhao, Junmei, and Liu, Huizhou
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IONIC liquids , *EXTRACTION (Chemistry) , *RARE earth metals , *DILUTION , *AMMONIUM nitrate , *PHOSPHONATES - Abstract
The coexistence of tricaprylmethylammonium nitrate ([A336][NO 3 ]) and Di(2-ethylhexyl) 2-ethylhexyl phosphonate (DEHEHP) has been found an obvious synergistic extraction effect for rare earths nitrates. In this work, synergistic extraction behaviors without any diluent for rare earth nitrates based on tri(hexyl)tetradecylphosphonium chloride (Cyphos®IL 101, [P66614][Cl]) and DEHEHP have been further investigated. Pr(III) was still used as a model RE, and the maximum synergistic extraction distribution ratio was obtained at a volume ratio of 2:3 for [P66614][Cl] and DEHEHP. The synergistic enhancement coefficients have been tested for the whole rare earths. Results show that there is an obvious synergistic enhancement effect for light REs (La-Sm) and an anti-synergistic effect for Gd-Lu including Y. The effects of acidity, anions and metal ion concentrations on the extraction have been investigated. The extraction mechanism has been confirmed to be the typical ion-association reactions. The maximum loading capacity is 0.78 mol/L Pr at 293.15 K. The extraction ability of [P66614][Cl]-DEHEHP is superior to that of reported [A336][NO 3 ]-DEHEHP, and is also greater than that of common acidic organophosphate-kerosene extraction system. Stripping, recyclability, and selectivity between REs and non-REs, has also been investigated. [ABSTRACT FROM AUTHOR]
- Published
- 2017
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173. Adsorptive recovery of vanadium(V) from chromium(VI)-containing effluent by Zr(IV)-loaded orange juice residue.
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Hu, Qiaoyu, Paudyal, Hari, Zhao, Junmei, Huo, Fang, Inoue, Katsutoshi, and Liu, Huizhou
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ADSORPTION (Chemistry) , *VANADIUM , *HEXAVALENT chromium , *ORANGE juice , *ZIRCONIUM , *BIOMASS - Abstract
Highlights: [•] Zr(VI)-SOW is a promising biomass adsorbent for the adsorption of V(V). [•] The adsorption mechanism is anion exchange between OH− and metal oxo-anions. [•] Adsorption efficiency was found to be strongly dependent on pH. [•] β V/Cr of Zr(IV)-SOW is much higher than the commercial resin D201. [•] Column adsorption can realize the higher enrichment factors for V than Cr. [ABSTRACT FROM AUTHOR]
- Published
- 2014
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174. NaVPO4X (X = O, F) as cathodes for advanced high-energy Na-ion batteries.
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Zhang, Xusheng, Xu, Chunliu, Bai, Ying, and Zhao, Junmei
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ENERGY density , *CRYSTAL structure , *LITHIUM-ion batteries , *RAW materials , *STORAGE batteries - Abstract
[Display omitted] • The relationships between preparation methods, crystal structures, and electrochemical properties of NaVPO 4 X (X = O, F) were summarized. • The structural controversy of tetragonal and monoclinic NaVPO 4 F were systematically demonstrated. • KTP-type structure has the greatest potential as cathode for NIBs among all reported crystal structures. • A typical KTP-Na 0.9 VOPO 4 was prepared and its electrochemical performance was investigated. • The remaining challenges and corresponding strategies of KTP-NaVPO 4 X (X = O, F) were proposed. Na-ion batteries (NIBs), which possess the same working mechanism as Li-ion batteries (LIBs), have attracted extensive attention and delivered great application potential because of their abundant raw material and excellent comprehensive electrochemical performances. The development of cathodes is one of the key factors for the further industrialization of NIBs. Polyanionic phosphates are a class of cathode materials for NIBs with great research value and application prospect because of their stable 3D-frame structure, suitable working voltage and facilitated Na+ diffusion path. Among them, NaVPO 4 X (X = O, F) compounds have high theoretical capacities of over 140 mAh/g and deliver an average voltage of over 3.6 V, corresponding to an energy density of more than 500 Wh/kg, which are regarded as cathode candidates with great potential for high-energy NIBs. So far, some of NaVPO 4 X (X = O, F) materials have been reported as cathodes for NIBs and demonstrated completely different crystal structures and Na+-storage performance. In this manuscript, we firstly summarized the current research progress and related challenges of NaVPO 4 X (X = O, F) cathodes. Furthermore, a representative KTiOPO 4 -type NaVOPO 4 was successfully prepared and its electrochemical performances were also systematically investigated. Based on these, we committed to emphasizing the relationships between crystal structures and electrochemical performances, and further proposed corresponding guidelines for the design of the advanced cathodes. It is believed that this work can present a profound inspiration for the development of polyanionic cathodes for high-energy NIBs. [ABSTRACT FROM AUTHOR]
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- 2024
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175. Extraction and separation of cobalt(II), copper(II) and manganese(II) by Cyanex272, PC-88A and their mixtures
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Wang, Fuchun, He, Fanghui, Zhao, Junmei, Sui, Na, Xu, Lin, and Liu, Huizhou
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EXTRACTION (Chemistry) , *SEPARATION (Technology) , *COBALT , *COPPER , *MANGANESE , *LEACHATE , *LITHIUM-ion batteries , *MIXTURES - Abstract
Abstract: Co, Mn and Cu usually coexist in the leachate of waste lithium ion batteries (LIBs). Extraction and separation of Co2+, Cu2+ and Mn2+ from sodium sulfate media by bis(2,4,4-trimethylpentyl) phosphinic acid, 2-ethylhexyl phosphinic acid mono-2-ethylhexyl ester and their mixtures in n-heptane have been investigated in detail. Synergistic enhancement coefficients, extraction reactions, infrared spectra, stripping properties and extraction selectivity were examined. A feasible separation process for recovery and separation of Mn, Cu and Co by the synergistic system was proposed and the mixed extractants could be used for reclaiming Mn, Cu and Co from the leachate of waste LIBs. [Copyright &y& Elsevier]
- Published
- 2012
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176. A novel separation technique: Gas-assisted three-liquid-phase extraction for treatment of the phenolic wastewater
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Yu, Pinhua, Huang, Kun, Zhao, Junmei, Zhang, Chao, Xie, Keng, Deng, Fuli, and Liu, Huizhou
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SEPARATION (Technology) , *SEPARATION of gases , *EXTRACTION (Chemistry) , *NITROPHENOLS , *NITROGEN removal (Water purification) , *MASS transfer , *BUBBLE dynamics - Abstract
Abstract: A novel technique, gas-assisted three-liquid-phase extraction (GATE), was proposed to improve three-liquid-phase separation of p-nitrophenol (p-NP) and o-nitrophenol (o-NP) from wastewater. The partition behavior of p-NP and o-NP into a three-liquid-phase system composed of hexane–PEG2000–(NH4)2SO4–H2O at the aid of gas bubbling was discussed. It was demonstrated that the process of gas bubbling was effective for the mass transfer of p-NP and o-NP into PEG phase and hexane phase, respectively. Influences of various parameters including the phase-forming salt concentrations, gas flow rate, gas bubbling time, initial volume of hexane and PEG phase on distribution behavior of p-NP and o-NP were investigated. Under the optimal conditions for GATE, the removal ratio of p-NP and o-NP from wastewater could reach 81% and 90%, respectively. While the mass fraction of p-NP into PEG phase and o-NP into hexane phase arrived at 75% and 74%, respectively. The distribution ratio and concentration factor were all higher than conventional three-liquid-phase extraction system. During GATE processes, the dispersed PEG and hexane in (NH4)2SO4 aqueous solution can be captured by ascending gas streams. GATE is demonstrated to be an effective method for the simultaneously extraction and separation of two or more organic chemicals in one-step''s three-liquid-phase extraction, and also provides a technique to prevent loss of dispersed polymers and organic solvents in aqueous phase in extraction process for treatment of the phenolic wastewater. [Copyright &y& Elsevier]
- Published
- 2010
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177. Selective recovery of Li and FePO4 from spent LiFePO4 cathode scraps by organic acids and the properties of the regenerated LiFePO4.
- Author
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Kumar, Jai, Shen, Xing, Li, Bo, Liu, Huizhou, and Zhao, Junmei
- Subjects
- *
ORGANIC acids , *LEMON juice , *CATHODES , *CITRUS fruits , *MALIC acid , *FRUIT juices - Abstract
• Li and FePO 4 can be selectively recovered by citric fruit juice-based leaching. • Lemon juice shows the best leaching effect based on the suitable pH. • The leaching process was optimized for the high recovery rates of Li and FePO 4. • Crystalline carbon inside FePO 4 must be removed for the regeneration of LiFePO 4. • The regenerated LiFePO 4 shows comparable performances to the fresh LiFePO 4. To recycle the sharply growing spent lithium-ion batteries and alleviate concerns over shortages of resources, particularly Li, is still an urgent issue. In this work, an organic acids based leaching approach at room temperature is proposed to recover Li and FePO 4 from spent LiFePO 4 cathode powder. The coexistent metal ions, Cu and Al, have also been investigated. Citrus fruit juices, rich in organic acids, such as citric acid and malic acid, have been used as leaching agents in this work. Among lemon, orange and apple, lemon juice shows the best leaching effect based on its suitable pH of the reaction system. Under the optimized conditions, the leaching rates of Li, Cu and Al can reach up to 94.83%, 96.92% and 47.24%, while Fe and P remain as low as 4.05% and 0.84%, respectively. Li 2 CO 3 and FePO 4 can be recovered from the leachate and the leaching residue, respectively. The recovered FePO 4 was used to prepare new cathode material LiFePO 4. The crystalline carbon, present in the spent LiFePO 4 cathode scraps, has a significant effect on the electrochemical performances of the regenerated LiFePO 4. The regenerated LiFePO 4 cathode material delivered a comparable discharge capacity of 155.3 mAh g−1 at 0.1C and rate capacity to the fresh LiFePO 4. For the cycling stability, it displays capacity retention of 98.30% over 100 cycles at 1 C with a fading rate of 0.017% per cycle. The proposed organic acids-based recycling strategy is much benign for recycling the spent LiFePO 4 cathode materials. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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178. A facile synthesis of nitrogen-doped hierarchical porous carbon with hollow sphere structure for high-performance supercapacitors.
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Shang, Yunpeng, Hu, Xudong, Li, Xin, Cai, Shu, Liang, Guangchuan, Zhao, Junmei, Zheng, Chunming, and Sun, Xiaohong
- Subjects
- *
PLASMA sheaths , *SPHERES , *SPRAY drying , *CYCLING competitions , *SUPERCAPACITOR electrodes , *CARBON - Abstract
In this work, nitrogen-doped carbon with hierarchical porous and hollow sphere structure has been synthesized through a simple and facile route of spray drying using glycine as the nitrogen-containing carbon source. After KOH activation, the prepared material (NHPCA) shows a large specific surface area of 962 m2 g−1 with moderate N-doping of 5.74% and exhibits a high specific capacitance of 271 F g−1 in 6 M KOH electrolyte at 1.0 A g−1, remarkable rate capability and particularly stable cycling performance with no significant specific capacitance drop after 10000 cycles at 1.0 A g−1. The excellent electrochemical properties come from the unique structure and the doping of nitrogen. The hierarchical pore structure improves the efficiency of electrolyte ions transport, and diffusion and the hollow sphere structure further facilitates mass transport. The doping of nitrogen increases the total capacitance by providing redox pseudo-capacitance. The results indicate the as-prepared nitrogen-doped carbon with hierarchical porous and hollow sphere structure can be used as a hopeful candidate for an efficient electrode of commercial supercapacitors devices. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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179. Amino-functionalized magnetic cellulose nanocomposite as adsorbent for removal of Cr(VI): Synthesis and adsorption studies.
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Sun, Xitong, Yang, Liangrong, Li, Qian, Zhao, Junmei, Li, Xiaopei, Wang, Xiaoqin, and Liu, Huizhou
- Subjects
- *
AMINO group , *MAGNETIC properties of nanocomposite materials , *CELLULOSE , *HEXAVALENT chromium , *METAL absorption & adsorption , *SYNTHESIS of Nanocomposite materials - Abstract
Highlights: [•] The magnetic cellulose-based material was first used for Cr(VI) removal. [•] The magnetic cellulose composite was prepared and characterized. [•] The adsorbent has a comparable adsorption capacity to others reported. [•] The adsorption rate is considerably fast. [•] The adsorbent exhibits a good reusability. [ABSTRACT FROM AUTHOR]
- Published
- 2014
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180. Synthesis of polyethylenimine-functionalized poly(glycidyl methacrylate) magnetic microspheres and their excellent Cr(VI) ion removal properties.
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Sun, Xitong, Yang, Liangrong, Xing, Huifang, Zhao, Junmei, Li, Xiaopei, Huang, Yinbin, and Liu, Huizhou
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- *
GLYCIDYL methacrylate , *CHROMIUM ions , *GRAFT copolymers , *IMINE synthesis , *ADSORPTION (Chemistry) , *MAGNETIC materials - Abstract
Highlights: [•] The PEI-grafted magnetic polymer microspheres were prepared. [•] The adsorbent is micro-sized and monodispersed. [•] The adsorbent has a much higher adsorption capacity than others reported. [•] The adsorption rate is considerably fast. [•] The adsorbent has a good reusability. [ABSTRACT FROM AUTHOR]
- Published
- 2013
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181. Block copolymer micellization induced microphase mass transfer: Partition of Pd(II), Pt(IV) and Rh(III) in three-liquid-phase systems of S201–EOPO–Na2SO4–H2O
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Yu, Pinhua, Huang, Kun, Zhang, Chao, Xie, Keng, He, Xiuqiong, Zhao, Junmei, Deng, Fuli, and Liu, Huizhou
- Subjects
- *
BLOCK copolymers , *MICELLES , *MASS transfer , *CHEMICAL reactions , *POLYETHYLENE oxide , *PHASE transitions , *METAL ions , *PLATINUM , *MOLECULAR structure - Abstract
Abstract: Three-liquid-phase partitioning of Pd(II), Pt(IV) and Rh(III) in systems of S201(diisoamyl sulfide)/nonane–EOPO(polyethylene oxide–polypropylene oxide random block copolymer)–Na2SO4–H2O was investigated. Experimental results indicated that the selective enrichment of Pd(II), Pt(IV) and Rh(III) respectively into the S201 organic top phase, EOPO-based middle phase and Na2SO4 bottom phase was achieved by control over the phase behavior of the three-liquid-phase systems (TLPS). The microphase mass transfer behavior of Pt(IV), Pd(II) and Rh(III) was closely related to the micellization of EOPO molecules. A suggested micro-mechanism model and a mass transfer model describe the micellization of EOPO molecules and the effect on mass transfer of platinum ions across the microphase interfaces. The salting-out induced continuous dehydration and ordered arrangement of the hydrophilic PEO segments in amphiphilic EOPO micelle, and these are the main driving forces for mass transfer of platinum metal ions onto the exposed activity sites of the dehydrated PEO segments. The differences in microphase interfacial structure of EOPO micelles are crucial for the efficient separation between Pt(IV), Pd(II) and Rh(III). [Copyright &y& Elsevier]
- Published
- 2011
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182. Reduction of hexavalent chromium by Pannonibacter phragmitetus LSSE-09 coated with polyethylenimine-functionalized magnetic nanoparticles under alkaline conditions
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Xu, Lin, Yang, Liangrong, Luo, Mingfang, Liang, Xiangfeng, Wei, Xuetuan, Zhao, Junmei, and Liu, Huizhou
- Subjects
- *
GRAM-negative bacteria , *HEXAVALENT chromium , *IMINES , *NANOPARTICLES , *CELL separation , *ELECTROSTATICS , *PARAMAGNETISM , *PH effect , *WASTEWATER treatment - Abstract
Abstract: A novel cell separation and immobilization method for Cr (VI)-reduction under alkaline conditions was developed by using superparamagnetic Fe3O4 nanoparticles (NPs). The Fe3O4 NPs were synthesized by coprecipitation followed by modification with sodium citrate and polyethyleneimine (PEI). The surface-modified NPs were monodispersed and the particle size was about 15nm with a saturation magnetization of 62.3emu/g and an isoelectric point (pI) of 11.5 at room temperature. PEI-modified Fe3O4 NPs possess positive zeta potential at pH below 11.5, presumable because of the high density of amine groups in the long chains of PEI molecules on the surface. At initial pH 9.0, Pannonibacter phragmitetus LSSE-09 cells were immobilized by PEI-modified NPs via electrostatic attraction and then separated with an external magnetic field. Compared to free cells, the coated cells not only had the same Cr (VI)-reduction activity but could also be easily separated from reaction mixtures by magnetic force. In addition, the magnetically immobilized cells retained high specific Cr (VI)-reduction activity over six batch cycles. The results suggest that the magnetic cell separation technology has potential application for Cr (VI) detoxification in alkaline wastewater. [Copyright &y& Elsevier]
- Published
- 2011
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183. Effects of a dietary antioxidant blend on growth performance, liver function, oxidative stress, and meat and fat quality in pigs and broiler chickens fed diets high in oxidants
- Author
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Lu, Ting, Animal and Poultry Sciences, Harper, Allen F., Dalloul, Rami A., Zhao, Junmei, Denbow, D. Michael, and Estienne, Mark J.
- Subjects
pig ,Performance ,oxidative stress ,Antioxidant ,broiler ,meat quality - Abstract
High feed ingredient prices have increased the use of by-products containing a high proportion of polyunsaturated fatty acids (PUFA) in pig and chicken feeds. This can increase the oxidation of other feed nutrients as well as causing oxidative stress in animals. Two studies were conducted to evaluate the effects of a dietary antioxidant blend (AOX, ethoxyquin and propyl gallate) in pigs and broiler chickens fed a diet high in oxidants. The objective of the first study was to evaluate the antioxidant blend on growth performance, meat quality, liver function, oxidative status, carcass characteristics, meat quality, and fatty acid profile in pigs. Crossbred barrows (n = 100, 10.91 ± 0.65 kg, 36 ± 2 d of age, Landrace × Duroc) were allotted to 5 treatments based on body weight (BW, 5 replicate pens per treatment, 4 pigs per pen). Treatments included: 1) HO: high oxidant diet containing 5% oxidized soy oil and 10% PUFA source (containing docosahexaenoic acid, DHA, 3.7% of diet); 2) VE: the HO diet with 11 IU/kg of added vitamin E; 3) AOX: the HO diet with AOX (135 mg/kg); 4) VE+AOX: the HO diet with both vitamin E and AOX; and 5) SC: a standard corn-soy control diet. The trial lasted for 118 d; on d 83, the HO diet pigs were switched to the SC diet because the animals were displaying very poor health. Compared with SC pigs, HO pigs had decreased average daily gain (ADG) and average daily feed intake (ADFI) from d 26 to 82 (P < 0.05). However, after switching the HO pigs to the SC diet, the VE treatment became the most stressed treatment with the poorest performance from d 83 to 118 (P < 0.05). The AOX restored pig performance to a level similar to pigs fed the SC diet (P > 0.05) with greater gain to feed ratio (G:F) for the entire period (P < 0.05). The AOX added treatments also attenuated the enlarged liver symptoms and reduced markers of liver stress including total bilirubin and aspartate transaminase, thiobarbituric acid reactive substances (TBARS) and carbonyl concentrations. In addition, the AOX addition in the high oxidant diet restored the lighter carcass weight, less back fat, less lean body mass and smaller loin eye area, decreased dressing percentage and intensive lipofuscin deposition induced by the high oxidant diet. However, the traits of loin muscle redness and belly firmness were not fully corrected by AOX. The second study was to investigate the antioxidant blend and vitamin E on growth performance, oxidative status, meat quality, fatty acid profile, liver function and inflammatory response in broiler chickens. Cobb 500 male broilers (n = 1200, 44.7 ± 0.8 g, d 0) were randomly distributed into 60 floor pens across 6 treatments with 10 replicate pens of 20 chicks each. Treatments included: 1) HO: high oxidant diet with vitamin E at 10 IU/kg, 3% oxidized oil, 3% PUFA source; 2) VE: the HO diet with vitamin E at 200 IU/kg; 3) AOX: the HO diet with AOX at 135 mg/kg, 4) VE+AOX: the HO diet with both vitamin E at 200 IU/kg and AOX at 135 mg/kg, 5) SC: standard control, a corn soy diet with vitamin E at 10 IU/kg, 3% non-oxidized soybean oil, no PUFA source, and 6) PC: positive control, the SC diet with AOX at 135 mg/kg. Compared to the SC birds, the PUFA added treatments (HO, VE, AOX, VE+AOX) groups had greater body weight, ADG and ADFI from d 0 through d 21 (P < 0.05). However, the growth of birds fed the VE treatment fell behind that of other treatments (P < 0.05) during the last 21 d of the trial. Compared to the HO birds, the AOX birds had lower TBARS and greater uric acid concentrations in the plasma, greater gene expression of superoxide dismutase and less drip loss, suggesting enhanced systematic antioxidant capability. In addition, dietary addition of AOX or AOX plus VE moderately improved liver function and reduced inflammation in fat tissue to a level similar to control groups. In both studies, the AOX supplement was effective in preserving PUFA, especially DHA deposition in the back fat of pigs and abdominal fat of chickens. These results suggest that feeding the high oxidant diet caused a series of changes in growth performance, liver function, oxidative status, carcass characteristics and meat quality in pigs, and AOX addition attenuated many of these. The supplementation of AOX also showed some effects on reducing oxidative stress in chickens. However, the effects were not as profound as the pig study. Ph. D.
- Published
- 2013
184. Decoupling the air sensitivity of Na-layered oxides.
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Yang Y, Wang Z, Du C, Wang B, Li X, Wu S, Li X, Zhang X, Wang X, Niu Y, Ding F, Rong X, Lu Y, Zhang N, Xu J, Xiao R, Zhang Q, Wang X, Yin W, Zhao J, Chen L, Huang J, and Hu YS
- Abstract
Air sensitivity remains a substantial barrier to the commercialization of sodium (Na)-layered oxides (NLOs). This problem has puzzled the community for decades because of the complexity of interactions between air components and their impact on both bulk and surfaces of NLOs. We show here that water vapor plays a pivotal role in initiating destructive acid and oxidative degradations of NLOs only when coupled with carbon dioxide or oxygen, respectively. Quantification analysis revealed that reducing the defined cation competition coefficient (η), which integrates the effects of ionic potential and sodium content, and increasing the particle size can enhance the resistance to acid attack, whereas using high-potential redox couples can eliminate oxidative degradation. These findings elucidate the underlying air deterioration mechanisms and rationalize the design of air-stable NLOs.
- Published
- 2024
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185. A "Liquid-In-Solid" Electrolyte for High-Voltage Anode-Free Rechargeable Sodium Batteries.
- Author
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Lu Z, Yang H, Wu G, Shan P, Lin H, He P, Zhao J, Yang Y, and Zhou H
- Abstract
Developing anode-free batteries is the ultimate goal in pursuit of high energy density and safety. It is more urgent for sodium (Na)-based batteries due to its inherently low energy density and safety hazards induced by highly reactive Na metal anodes. However, there is no electrolyte that can meet the demanding Na plating-stripping Coulomb efficiency (CE) while resisting oxidative decomposition at high voltages for building stable anode-free Na batteries. Here, a "liquid-in-solid" electrolyte design strategy is proposed to integrate target performances of liquid and solid-state electrolytes. Breaking through the Na
+ transport channel of Na-containing zeolite molecular sieve by ion-exchange and confining aggregated liquid ether electrolytes in the nanopore and void of zeolites, it achieves excellent high-voltage stability enabled by solid-state zeolite electrolytes, while inheriting the ultra-high CE (99.84%) from liquid ether electrolytes. When applied in a 4.25 V-class anode-free Na battery, an ultra-high energy density of 412 W h kg-1 (based on the active material of both cathodes and anodes) can be reached, which is comparable to the state-of-the-art graphite||LiNi0.8 Co0.1 Mn0.1 O2 lithium-ion batteries. Furthermore, the assembled anode-free pouch cell exhibits excellent cycling stability, and a high capacity retention of 89.2% can be preserved after 370 cycles., (© 2024 Wiley‐VCH GmbH.)- Published
- 2024
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186. Overcoming Kinetic Limitations of Polyanionic Cathode toward High-Performance Na-Ion Batteries.
- Author
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Xu C, Fu Q, Hua W, Chen Z, Zhang Q, Bai Y, Yang C, Zhao J, and Hu YS
- Abstract
Polyanionic cathodes have attracted extensive research interest for Na-ion batteries (NIBs) due to their moderate energy density and desirable cycling stability. However, these compounds suffer from visible capacity fading and significant voltage decay upon the rapid sodium storage process, even if modified through nanoengineering or carbon-coating routes, leading to limited applications in NIBs. Herein, the Na
3 (VOPO4 )2 F cathode material with dominantly exposed {001} active facets is demonstrated by a topochemical synthesis route. Owing to the rational geometrical structure design and thereby directly shortening Na diffusion distance, the electrode delivers a reversible capacity of ∼129 mA h g-1 even at a high rate of 10 C, which is very close to the theoretical capacity of 132 mA h g-1 , achieving a high energy density of ∼452 W h kg-1 coupled with a high-power density of 4660 W kg-1 . When further served as a cathode for nonaqueous, aqueous-based, and solid-state full NIBs, respectively, our designed Na3 (VOPO4 )2 F always enables superior electrochemical performance due to favorable kinetics.- Published
- 2024
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187. CYTOR-NFAT1 feedback loop regulates epithelial-mesenchymal transition of retinal pigment epithelial cells.
- Author
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Zhang R, Wang L, Li Y, Liu Y, Dong K, Pei Y, Zhao J, Liu G, Li J, Zhang X, Cui T, Gao Y, Wang W, Wang Y, Gui C, and Zhou G
- Subjects
- Humans, Gene Expression genetics, Cell Proliferation genetics, Cell Movement genetics, Transforming Growth Factor beta1 metabolism, Signal Transduction genetics, Signal Transduction physiology, Epithelial Cells metabolism, Cell Line, Cells, Cultured, Epithelial-Mesenchymal Transition genetics, Retinal Pigment Epithelium metabolism, Retinal Pigment Epithelium cytology, NFATC Transcription Factors metabolism, NFATC Transcription Factors genetics, RNA, Long Noncoding physiology, RNA, Long Noncoding genetics, RNA, Long Noncoding metabolism, Macular Degeneration genetics, Macular Degeneration metabolism, Macular Degeneration pathology, Macular Degeneration etiology, Feedback, Physiological
- Abstract
Epithelial mesenchymal transition (EMT) occurring in retinal pigment epithelial cells (RPE) is a crucial mechanism that contributes to the development of age-related macular degeneration (AMD), a pivotal factor leading to permanent vision impairment. Long non-coding RNAs (lncRNAs) have emerged as critical regulators orchestrating EMT in RPE cells. In this study, we explored the function of the lncRNA CYTOR (cytoskeleton regulator RNA) in EMT of RPE cells and its underlying mechanisms. Through weighted correlation network analysis, we identified CYTOR as an EMT-related lncRNA associated with AMD. Experimental validation revealed that CYTOR orchestrates TGF-β1-induced EMT, as well as proliferation and migration of ARPE-19 cells. Further investigation demonstrated the involvement of CYTOR in regulating the WNT5A/NFAT1 pathway and NFAT1 intranuclear translocation in the ARPE-19 cell EMT model. Mechanistically, CHIP, EMSA and dual luciferase reporter assays confirmed NFAT1's direct binding to CYTOR's promoter, promoting transcription. Reciprocally, CYTOR overexpression promoted NFAT1 expression, while NFAT1 overexpression increased CYTOR transcription. These findings highlight a mutual promotion between CYTOR and NFAT1, forming a positive feedback loop that triggers the EMT phenotype in ARPE-19 cells. These discoveries provide valuable insights into the molecular mechanisms of EMT and its association with AMD, offering potential avenues for targeted therapies in EMT-related conditions, including AMD., (© 2024. The Author(s) under exclusive licence to Japan Human Cell Society.)
- Published
- 2024
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188. Development of High-Performance Iron-Based Phosphate Cathodes toward Practical Na-Ion Batteries.
- Author
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Xu C, Zhou L, Gao T, Chen Z, Hou X, Zhang J, Bai Y, Yang L, Liu H, Yang C, Zhao J, and Hu YS
- Abstract
Iron-based phosphate cathode of Na
4 Fe3 (PO4 )2 (P2 O7 ) has been regarded as a low-cost and structurally stable cathode material for Na-ion batteries (NIBs). However, their practical application is greatly hindered by the insufficient electrochemical performance and limited energy density. Here, we report a new iron-based phosphate cathode of Na4.5 Fe3.5 (PO4 )2.5 (P2 O7 ) with the intergrown heterostructure of the maricite-type NaFePO4 and orthorhombic Na4 Fe3 (PO4 )2 (P2 O7 ) phases at a mole ratio of 0.5:1. Benefited from the increased composition ratio and the spontaneous activation of the maricite-type NaFePO4 phase, the as-prepared Na4.5 Fe3.5 (PO4 )2.5 (P2 O7 ) composites deliver a reversible capacity over 130 mA h g-1 and energy density close to 400 W h kg-1 , which is far beyond that of the single-phase Na4 Fe3 (PO4 )2 (P2 O7 ) cathode (∼120 mA h g-1 and ∼350 W h kg-1 ). Moreover, the kg-level products from the scale-up synthesis demonstrate a stable cycling performance over 2000 times at 3 C in pouch cells. We believe that our findings could show the way forward the practical application of the iron-based phosphate cathodes for NIBs.- Published
- 2024
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189. Polyanionic Cathode Materials for Practical Na-Ion Batteries toward High Energy Density and Long Cycle Life.
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Xu C, Zhao J, Yang C, and Hu YS
- Abstract
Na-ion batteries (NIBs) as a supplement to Li-ion batteries deliver huge application potential in the field of grid-scale energy storage. At present, it is a particularly imperative to advance commercialization of the NIBs after ten years of intensive research. Among the exploited cathodes for NIBs, polyanionic compounds have great commercial prospects due to their favorable ion diffusion channels, high safety, and superior structure stability determined by their unique structure framework; however, there is still a long way to go before large-scale industrialization can be realized. This outlook summarizes the recent progress of polyanion-type cathodes for NIBs and includes V-based, Fe-based, and Mn-based polyanionic compounds toward high energy density and long cycle lifespan. The remaining challenges and guidelines/suggestions for the design of the practically available polyanionic cathode materials with desirable energy density and cycling performance are presented. We hope that this outlook can provide some insights into the development of polyanionic cathodes for practical NIBs toward commercialization., Competing Interests: The authors declare no competing financial interest., (© 2023 The Authors. Published by American Chemical Society.)
- Published
- 2023
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190. Surface Engineering Stabilizes Rhombohedral Sodium Manganese Hexacyanoferrates for High-Energy Na-Ion Batteries.
- Author
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Xu C, Ma Y, Zhao J, Zhang P, Chen Z, Yang C, Liu H, and Hu YS
- Abstract
The rhombohedral sodium manganese hexacyanoferrate (MnHCF) only containing cheap Fe and Mn metals was regarded as a scalable, low-cost, and high-energy cathode material for Na-ion batteries. However, the unexpected Jahn-teller effect and significant phase transformation would cause Mn dissolution and anisotropic volume change, thus leading to capacity loss and structural instability. Here we report a simple room-temperature route to construct a magical Co
x B skin on the surface of MnHCF. Benefited from the complete coverage and the buffer effect of Cox B layer, the modified MnHCF cathode exhibits suppressed Mn dissolution and reduced intergranular cracks inside particles, thereby demonstrating thousands-cycle level cycling lifespan. By comparing two key parameters in the real energy world, i.e., cost per kilowatt-hours and cost per cycle-life, our developed Cox B coated MnHCF cathode demonstrates more competitive application potential than the benchmarking LiFePO4 for Li-ion batteries., (© 2023 Wiley-VCH GmbH.)- Published
- 2023
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191. Case report: A rare case of acute myeloid leukemia with CPSF6-RARG fusion resembling acute promyelocytic leukemia.
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Zhao J, Wang W, Yan L, Chen X, Li W, Li W, Chen T, and Chen L
- Abstract
Retinoic acid receptor gamma ( RARG) gene rearrangement has been reported in several acute myeloid leukemia (AML) patients. They resemble classical acute promyelocytic leukemia (APL) patients in clinical features, morphology, and immunophenotype but do not carry the promyelocytic leukemia ( PML ) -RARA fusion gene. Importantly, almost all these APL-like AML patients show resistance to all-trans retinoic acid (ATRA), and no effective treatment is recommended for them. Here, we identified a case of AML resembling APL in clinical presentation and experimental findings carrying a rare cleavage and polyadenylation-specific factor 6 (CPSF6)-RARG fusion gene. The patient was insensitive to ATRA and ATO but responded well to homoharringtonine and cytarabine., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2022 Zhao, Wang, Yan, Chen, Li, Li, Chen and Chen.)
- Published
- 2022
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192. Preferential Extraction of Lithium from Spent Cathodes and the Regeneration of Layered Oxides for Li/Na-Ion Batteries.
- Author
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Hu X, Xu C, Li X, Zhang P, Rong X, Yang C, Jian Z, Liu H, Hu YS, and Zhao J
- Abstract
The preferentially selective extraction of Li
+ from spent layered transition metal oxide (LiMO2 , M = Ni, Co, Mn, etc.) cathodes has attracted extensive interest based on economic and recycling efficiency requirements. Presently, the efficient recycling of spent LiMO2 is still challenging due to the element loss in multistep processes. Here, we developed a facile strategy to selectively extract Li+ from LiMO2 scraps with stoichiometric H2 SO4 . The proton exchange reaction could be driven using temperature, accompanied by the generation of soluble Li2 SO4 and MOOH precipitates. The extraction mechanism includes a two-stage evolution, including dissolution and ion exchange. As a result, the extraction rate of Li+ is over 98.5% and that of M ions is less than 0.1% for S-NCM. For S-LCO, the selective extraction result is even better. Finally, Li2 CO3 products with a purity of 99.68% can be prepared from the Li+ -rich leachate, demonstrating lithium recovery efficiencies as high as 95 and 96.3% from NCM scraps and S-LCO scraps, respectively. In the available cases, this work also represents the highest recycling efficiency of lithium, which can be attributed to the high leaching rate and selectivity of Li+ , and even demonstrates the lowest reagent cost. The regenerated LiNi0.5 Co0.24 Mn0.26 O2 and Na1.01 Li0.001 Ni0.38 Co0.18 Mn0.44 O2 cathodes also deliver a decent electrochemical performance for Li-ion batteries (LIBs) and Na-ion batteries (NIBs), respectively. Our current work offers a facile, closed-loop, and scalable strategy for recycling spent LIB cathodes based on the preferentially selective extraction of Li+ , which is superior to the other leaching technology in terms of its cost and recycling yield.- Published
- 2022
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193. Regulated Synthesis of α-NaVOPO 4 with an Enhanced Conductive Network as a High-Performance Cathode for Aqueous Na-Ion Batteries.
- Author
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Shen X, Han M, Li X, Zhang P, Yang C, Liu H, Hu YS, and Zhao J
- Abstract
The low-cost and profusion of sodium reserves make Na-ion batteries (NIBs) a potential candidate to lithium-ion batteries for grid-scale energy storage applications. NaVOPO
4 has been recognized as one of the most promising cathodes for high-energy NIBs, owing to their high theoretical capacity and energy density. However, their further application is hindered by the multiphase transition and conductivity confinement. Herein, we proposed a feasible, one-step hydrothermal synthesis to regulate the synthesis of α-NaVOPO4 with controlled morphologies. The electrochemical properties of the NaVOPO4 electrode can be significantly enhanced taking Ketjen black (KB) as the optimized conductive carbon. Besides, combining with the nanocrystallization and construction of the conductive framework via high-energy ball milling, taking KB as the conductive carbon, the as-prepared NaVOPO4 /5%KB exhibits superior Na-storage performance (140.2 mA h g-1 at 0.1 C and a capacity retention of 84.8% over 1000 cycles at 10 C) to the original NaVOPO4 (128.5 mA h g-1 at 0.1 C and a capacity retention of 83.1% over 1000 cycles at 10 C). Moreover, the aqueous full cell with NaTi2 (PO4 )3 as the anode delivers a capacity of 114.7 mA h g-1 at 0.2 C (141 W h kg-1 energy density) and 80.6% capacity retention over 300 cycles at 5 C. The excellent electrochemical performance can be attributed to the nanosized structural and enhanced interfacial effect, which could be rewarding to construct electron transportation tunnels, thus speeding up the Na+ -diffusion kinetics. The modified strategy provides an efficient approach to intensify the electrochemical performance, which exhibits potential application of the NaVOPO4 cathode for NIBs.- Published
- 2022
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194. MondoA Is Required for Normal Myogenesis and Regulation of the Skeletal Muscle Glycogen Content in Mice.
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Ran H, Lu Y, Zhang Q, Hu Q, Zhao J, Wang K, Tong X, and Su Q
- Published
- 2021
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195. O3-NaFe (1/3- x ) Ni 1/3 Mn 1/3 Al x O 2 Cathodes with Improved Air Stability for Na-Ion Batteries.
- Author
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Li X, Shen X, Zhao J, Yang Y, Zhang Q, Ding F, Han M, Xu C, Yang C, Liu H, and Hu YS
- Abstract
Na-ion batteries (NIBs) have been considered as potential candidates for large-scale energy storage, where O3-type Na-based layered oxide cathodes have attracted great attention due to their high capacity and low cost. However, O3-Na
x TMO2 materials still suffer from insufficient air stability, which could lead to deteriorative electrochemical properties and thus hinder their practical application. In this work, a series of Al-doped O3-NaFe(1/3- x ) Ni1/3 Mn1/3 Alx O2 cathodes prepared by a co-precipitation method were investigated to enhance their electrochemical performance and air stability through stabilizing their structural and interface chemical properties. The Al-doped O3 - NaFe(1/3-0.01) Ni1/3 Mn1/3 Al0.01 O2 (NFNMA0.01 ) cathode delivers a comparable capacity of 138 mAh g-1 and keeps a capacity retention of 85.88% after 50 cycles at 0.2 C, while the undoped O3 - NaFe1/3 Ni1/3 Mn1/3 O2 (NFNM) can only keep a capacity retention of 71.02%, although with an initial capacity of 141 mAh g-1 at 0.2 C. For the air stability, the capacity decay rates are 58.87 and 5.07% for the undoped NFNM and Al-doped NFNMA0.01 after the air exposure for 30 days, respectively. The greatly decaying electrochemical performance could be due to the formation of carbonates during air exposure, which can be efficiently suppressed by Al doping. The doped Al3+ has been confirmed to be inserted into the NFNM crystal lattice, inducing the reduced values of lattice parameters a and c due to the smaller ionic radius of Al3+ (53.5 pm) vs Fe3+ (55.0 pm). This study demonstrates that Al doping plays an important role in the air stability and cycling stability for layered cathode materials, which offers an efficient strategy to optimize the material design for their practical application in NIBs.- Published
- 2021
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196. Rapid mechanochemical synthesis of polyanionic cathode with improved electrochemical performance for Na-ion batteries.
- Author
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Shen X, Zhou Q, Han M, Qi X, Li B, Zhang Q, Zhao J, Yang C, Liu H, and Hu YS
- Abstract
Na-ion batteries have been considered promising candidates for stationary energy storage. However, their wide application is hindered by issues such as high cost and insufficient electrochemical performance, particularly for cathode materials. Here, we report a solvent-free mechanochemical protocol for the in-situ fabrication of sodium vanadium fluorophosphates. Benefiting from the nano-crystallization features and extra Na-storage sites achieved in the synthesis process, the as-prepared carbon-coated Na
3 (VOPO4 )2 F nanocomposite exhibits capacity of 142 mAh g-1 at 0.1C, higher than its theoretical capacity (130 mAh g-1 ). Moreover, a scaled synthesis with 2 kg of product was conducted and 26650-prototype cells were demonstrated to proof the electrochemical performance. We expect our findings to mark an important step in the industrial application of sodium vanadium fluorophosphates for Na-ion batteries.- Published
- 2021
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197. Revisiting of Tetragonal NaVPO 4 F: A High Energy Density Cathode for Sodium-Ion Batteries.
- Author
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Ling M, Lv Z, Li F, Zhao J, Zhang H, Hou G, Zheng Q, and Li X
- Abstract
Tetragonal NaVPO
4 F has been regarded as an ideal cathode for sodium-ion batteries because of its high average plateau (3.8 V) and theoretical specific capacity (143 mA h g-1 ). However, the Na-storage performance is still hindered by unsatisfying thermal stability and poor conductivity. Herein, a stable tetragonal NaVPO4 F has been synthesized by a novel solvent thermal method using a carbon coating precursor. The as-prepared NaVPO4 F@C nanocomposite delivers a capacity of 133 mA h g-1 at 0.2 C, corresponding to an excellent energy density of 509 W h kg-1 ; when coupled with an HC anode, the full cell still displays an outstanding performance of 124 mA h g-1 at 0.05 C. Fast Na+ diffusion kinetics ( DNa = 10+ -12 to 10-10 cm2 s-1 ) and small volume change (4.4%) are exploited, which ensures good rate trait and cycling stability of tetragonal NaVPO4 F. Further, the Na+ extraction-insertion mechanism has been explored by analyzing the crystal structure change during in situ X-ray powder diffraction cycles.- Published
- 2020
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198. The role of autophagy in the overexpression of MUC5AC in patients with chronic rhinosinusitis.
- Author
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Ye Y, Zhao J, Ye J, Jiang X, Liu H, Xie Y, Zhang J, and Luo Q
- Subjects
- Adolescent, Adult, Aged, Cells, Cultured, Child, Chronic Disease, Female, Humans, Male, Middle Aged, Mucin 5AC genetics, Nasal Polyps genetics, Rhinitis genetics, Sinusitis genetics, Up-Regulation, Young Adult, Autophagy, Mucin 5AC metabolism, Nasal Mucosa physiology, Nasal Polyps metabolism, Rhinitis metabolism, Sinusitis metabolism
- Abstract
Background: Autophagy is a lysosomal degradation pathway that protects the body and is essential for cell survival and differentiation. Mucins (MUCs) are important components of secreted mucus, mucin (MUC)5 AC is the major MUC secreted in the normal airway., Objective: Investigated the role of autophagy in pathogenic mucin (MUC)5 AC production during chronic rhinosinusitis (CRS)., Methods: The expression of human neutrophil elastase (HNE) and the autophagic proteins microtubule-associated protein 1 light chain (LC)3B-II, c-Jun N-terminal kinase (JNK), c-Jun, and MUC5AC were analyzed in the sinonasal mucosa and human nasal epithelial cells (HNECs) using immunohistochemistry, enzyme-linked immunosorbent assay (ELISA), and quantitative real-time polymerase chain reaction (qRT-PCR). Autophagic vacuoles were studied using transmission electron microscopy (TEM). Primary HNECs were treated with HNE, bafilomycin A1, and SP600125. In some experiments, cultured primary HNECs were transfected with small interfering RNAs (siRNAs) to target Beclin-1 (BECN1; BECN1-siRNA), autophagy-related gene 5 (Atg5; Atg5-siRNA), and c-Jun (c-Jun-siRNA). Cultured cells were analyzed using western blotting, qRT-PCR, and ELISA., Results: In CRS patients, both with and without nasal polyps, the expression levels of HNE, LC3B, JNK, c-Jun, and MUC5AC were upregulated. Bafilomycin A1 upregulated LC3B-II expression and inhibited MUC secretion in HNE-treated normal primary HNECs. Autophagosomes were observed in HNE-treated primary HNECs using TEM. HNE-induced secretion of MUC5AC was suppressed in normal primary HNECs by BECN1-siRNA, Atg5-siRNA, c-Jun-siRNA, and SP600125., Conclusions: In HNE-induced CRS, autophagy increases the secretion of MUC5AC by promoting the phosphorylation of JNK and c-Jun., (Copyright © 2019. Published by Elsevier B.V.)
- Published
- 2019
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199. [Study on effect of voltage-gated calcium channel protein in meridian tissue cells exciting conduction].
- Author
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Du J, Zhou L, Wu H, Zhao J, Cui Y, Liu Q, Sun X, Zhu X, Liu C, and Li C
- Subjects
- Acupuncture Points, Animals, Female, Male, Random Allocation, Rats, Rats, Sprague-Dawley, Calcium Channel Blockers therapeutic use, Calcium Channels metabolism, Electroacupuncture methods, Meridians, Verapamil therapeutic use
- Abstract
Objective: To explore the material basis of conduction along meridian., Methods: Sixty SD rats(30 males,30 females) were randomly assigned into a normal group,an acupuncture group,a verapamil blocking group and a 0.9%NaCl blocking group(control group),15 rats in each one. Fluo 3-AM(calcium fluorescence probe) was injected at the observation part in femoral stomach meridian of foot- yangming (meridian part) and the approaching femoral meridian part(non-meridian part) in the normal group and the acupuncture group,and then incubation was applied. In the verapamil blocking group,verapamil was injected at local meridian part and non-meridian part,and in the control group 0.9%NaCl was injected. Then Fluo 3-AM was injected at the meridian part and non-meridian part in the two groups,and incubation was implemented. Ca
2+ imaging changes in cells were recorded for more than 20 min after injection of every part in each group respectively. After the above operations in the last three groups,acupuncture was used at "Zusanli"(ST 36) immediately,with electroacupuncture for one min,then Ca2+ imaging changes in cells at the meridian and non-meridian parts were recorded for more than 20 min., Results: In the normal group, Ca2+ fluorescence intensity at the meridian part was higher than that at the non-meridian part. In the acupuncture group,after acupuncture Ca2+ fluorescence intensity at the meridian part was obviously higher than before,but the change before and after acupuncture was not apparent at the non-meridian part. After verapamil blocking local calcium channel and acupuncture,the Ca2+ fluorescence of the meridian part did not strengthen,and the change of that before and after acupuncture at the non-meridian part was not obvious. In the control group,after injecting 0.9%NaCl at local part,Ca2+ fluorescence intensities of the meridian and non-meridian parts showed no obvious change,so was that before and after acupuncture., Conclusions: The voltage-gated calcium channel at the meridian part is highly correlated with its tissue cells exciting conduction.- Published
- 2016
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200. Superior Na-Storage Performance of Low-Temperature-Synthesized Na3(VO(1-x)PO4)2F(1+2x) (0≤x≤1) Nanoparticles for Na-Ion Batteries.
- Author
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Qi Y, Mu L, Zhao J, Hu YS, Liu H, and Dai S
- Abstract
Na-ion batteries are becoming comparable to Li-ion batteries because of their similar chemical characteristics and abundant sources of sodium. However, the materials production should be cost-effective in order to meet the demand for large-scale application. Here, a series of nanosized high-performance cathode materials, Na3(VO(1-x)PO4)2F(1+2x) (0≤x≤1), has been synthesized by a solvothermal low-temperature (60-120 °C) strategy without the use of organic ligands or surfactants. The as-synthesized Na3(VOPO4)2F nanoparticles show the best Na-storage performance reported so far in terms of both high rate capability (up to 10 C rate) and long cycle stability over 1200 cycles. To the best of our knowledge, the current developed synthetic strategy for Na3(VO(1-x)PO4)2F(1+2x) is by far one of the least expensive and energy-consuming methods, much superior to the conventional high-temperature solid-state method., (© 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.)
- Published
- 2015
- Full Text
- View/download PDF
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