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Bacterial Cellulose/Zwitterionic Dual-network Porous Gel Polymer Electrolytes with High Ionic Conductivity

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Journal of Wuhan University of Technology(Materials Science) 2024年第3期39卷 596-605页

作者：侯朝霞 WANG haoran QU Chenying Liaoning Province Key Laboratory of Micro-nano Materials Research and Development School of Mechanical EngineeringShenyang UniversityShenyang 110044China

Bacterial cellulose(BC)was innovatively combined with zwitterionic copolymer acrylamide and sulfobetaine methacrylic acid ester[P(AM-co-SBMA)]to build a dual-network porous structure gel polymer electrolytes(GPEs)with high ionic *** dual network structure BC/P(AM-co-SBMA)gels were formed by a simple one-step polymerization *** results show that ionic conductivity of BC/P(AM-co-SBMA)GPEs at the room temperature are 3.2×10^(-2) S/cm@1 M H_(2)SO_(4),4.5×10^(-2) S/cm@4 M KOH,and 3.6×10^(-2) S/cm@1 M NaCl,*** active carbon(AC)as the electrodes,BC/P(AM-co-SBMA)GPEs as both separator and electrolyte matrix,and 4 M KOH as the electrolyte,a symmetric solid supercapacitors(SSC)(AC-GPE-KOH)was assembled and *** specific capacitance of AC electrode is 173 F/g and remains 95.0%of the initial value after 5000 cycles and 86.2%after 10,000 cycles.

关键词： bacterial cellulose zwitterion gel polymer electrolytes ionic conductivity dual-network structure

Self-Compassion Moderates the Effect of Contingent Self-Esteem on Well-Being:Evidence from Cross-Sectional Survey and Experiment

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International Journal of Mental Health Promotion 2024年第2期26卷 117-126页

作者： Ruirui Zhang Xuguang Zhang Minxin yang haoran Zhang Mental Health Education and Counseling Center Shanghai University of International Business and EconomicsShanghai201620China School of Communication Engineering Hangzhou Dianzi UniversityHangzhou310018China School of Languages Shanghai University of International Business and EconomicsShanghai201620China School of Computer Science and Information Technology Northeast Normal UniversityChangchun130117China Library Northeast Normal UniversityChangchun130024China

Contingent self-esteem captures the fragile nature of self-esteem and is often regarded as suboptimal to psychological ***-compassion is another important self-related concept assumed to promote mental health and ***,research on the relation of self-compassion to contingent self-esteem is *** studies were conducted to explore the role of selfcompassion,either as a personal characteristic or an induced mindset,in influencing the effects of contingent self-esteem on *** 1 recruited 256 Chinese college students(30.4%male,mean age=21.72 years)who filled out measures of contingent self-esteem,self-compassion,and *** results found that self-compassion moderated the effect of contingent self-esteem on *** Study 2,a sample of 90 Chinese college students(34%male,mean age=18.39 years)were randomly assigned to either a control or self-compassion *** completed baseline trait measures of contingent self-esteem,self-compassion,and ***,they were led to have a 12-min break(control group)or listen to a 12-min self-compassion audio(self-compassion group),followed by a social stress task and outcome *** results demonstrated the effectiveness of the brief self-compassion training and its moderating role in influencing the effects of contingent self-esteem on negative affects after the social stress *** research provides implications that to equip with a self-compassionate mindset could lower the risk of the impairment of well-being associated with elements of contingent selfesteem,which involves a fragile sense of *** may also provide insights into the development of an“optimal selfesteem”and the improvement of well-being.

关键词： Self-compassion contingent self-esteem well-being social evaluative threat

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计及通信资源优化的温控负荷调控策略

浙江电力 2024年第8期43卷 74-84页

作者：权超冯怿彬赵鲁臻陶炳权谢杭杨浩然祁兵国网浙江省电力有限公司宁波供电公司浙江宁波315100 华北电力大学电气与电子工程学院北京102206

海量需求侧数据的传输需求使得通信网络的压力成倍增加,容易造成通信延迟、拥塞、中断等现象,影响供需互动业务实时性,不利于负荷调控的进一步实施。针对上述问题,以实现通信受限情况下新能源发电的精准消纳为目标,提出一种计及通信资... 详细信息

海量需求侧数据的传输需求使得通信网络的压力成倍增加,容易造成通信延迟、拥塞、中断等现象,影响供需互动业务实时性,不利于负荷调控的进一步实施。针对上述问题,以实现通信受限情况下新能源发电的精准消纳为目标,提出一种计及通信资源优化的负荷精细化调控策略。首先基于信息物理融合技术,建立考虑通信网络影响的温控负荷调控机制。进而基于通信网络模型和计及通信时延的改进温控负荷模型,采用自适应权重与反向学习策略相结合的改进粒子群算法,实现考虑通信资源均衡的温控负荷精细化调控。最后通过算例仿真,验证了所提算法能够合理分配通信资源,使得温控负荷在通信链路时延较大的情况下仍具备良好的消纳能力。

关键词：温控负荷负荷调控新能源消纳通信时延 AO-MO粒子群优化算法

Beyond the lab:a nanoimprint metalens arraybased augmented reality

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Light(Science & Applications) 2024年第5期13卷 801-802页

作者： Chi Li haoran Ren School of Physics and Astronomy Monash UniversityMelbourneVICAustralia

A see-through augmented reality prototype has been developed based on an ultrathin nanoimprint metalens array,opening up a full-colour,video-rate,and low-cost 3D near-eye display.

关键词： cost ens imprint

脊柱牵引状态下定点整复手法联合颈眩方治疗椎动脉型颈椎病真实世界临床研究

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陕西中医 2024年第5期45卷 675-678,682页

作者：贾承明杨皓然伍均杨淑彬李晓妮贺惠琼赵茜党建军陕西省中医医院陕西西安710003 陕西中医药大学陕西咸阳712046 西安大兴医院陕西西安710016

目的:观察脊柱牵引状态下定点整复手法联合颈眩方治疗椎动脉型颈椎病的真实世界临床疗效。方法:选择椎动脉型颈椎病患者300例。脊柱牵引状态下定点整复手法治疗每2天1次,口服颈眩方1剂/d,连续治疗2周。通过视觉模拟(VAS)、颈椎功能障碍... 详细信息

目的:观察脊柱牵引状态下定点整复手法联合颈眩方治疗椎动脉型颈椎病的真实世界临床疗效。方法:选择椎动脉型颈椎病患者300例。脊柱牵引状态下定点整复手法治疗每2天1次,口服颈眩方1剂/d,连续治疗2周。通过视觉模拟(VAS)、颈椎功能障碍指数调查问卷(NDI)、SF-36评分、眩晕症状(VSS-C)量表和经颅多普勒(TCD)、椎动脉彩超等指标对其临床疗效进行评价。结果:与治疗前比较,治疗后患者的VAS评分、NDI评分、VSS-C评分下降,差异有统计学意义(P<0.05)。治疗后2周和治疗后1周比较差异有统计学意义(P<0.05)。与治疗前比较,治疗后1、2、4、8周患者SF-36量表评分显著升高,差异有统计学意义(P<0.05)。病程大于6个月的患者比病程小于6个月的患者治疗后生活质量评分升高更显著。通过比较治疗前后TCD与椎动脉彩超检测指标,发现收缩期峰值血流速度显著升高,而阻力指数明显下降,且椎动脉管径略有增宽,差异有统计学意义(P<0.05)。结论:基于真实世界临床脊柱牵引状态下定点整复手法联合颈眩方治疗椎动脉型颈椎病疗效可靠。

关键词：椎动脉型颈椎病脊柱牵引状态下定点整复手法颈眩方真实世界筋骨理论中医流派

Role of tannin pretreatment in flotation separation of magnesite and dolomite

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International Journal of Minerals,Metallurgy and Materials 2024年第3期31卷 452-461页

作者： Xiufeng Gong Jin Yao Jun Guo Bin yang haoran Sun Wanzhong Yin Yulian Wang Yafeng Fu School of Resources and Civil Engineering Northeastern UniversityShenyang 110819China Key Laboratory of Solid Waste Treatment and Resource Utilization of the Ministry of Education Southwest University of Science and TechnologyMianyang 621010China School of Chemical Engineering China University of Mining and TechnologyXuzhou 221116China School of Materials Science and Engineering Shenyang Ligong UniversityShenyang 110159China Ansteel Beijing Research Institute Co. Ltd.Beijing 102200China

Flotation separation of magnesite and its calcium-containing carbonate minerals is a difficult ***,new regulat-ors have been proposed for magnesite flotation decalcification,although traditional regulators such as tannin,water glass,sodium carbon-ate,and sodium hexametaphosphate are more widely used in ***,they are rarely used as the main regulators in research because they perform poorly in magnesite and dolomite single-mineral flotation *** by the limonite presedimentation method and the addition of a regulator to magnesite slurry mixing,we used a tannin pretreatment method for separating magnesite and *** experiments confirmed that the tannin pretreatment method selectively and largely reduces the flotation recovery rate of dolomite without affecting the flotation recovery rate of ***,the contact angles of the tannin-pretreated magnesite and dolomite increased and decreased,respectively,in the presence of *** potential and Fourier transform infrared analyses showed that the tannin pretreatment method efficiently hinders NaOl adsorption on the dolomite surface but does not affect NaOl adsorption on the magnesite surface.X-ray photoelectron spectroscopy and density functional theory calculations confirmed that tannin interacts more strongly with dolomite than with magnesite.

关键词： tannin pretreatment selective inhibition flotation separation magnesite dolomite

A statistical study on the correlation between sporadic Ca+ layer and Es in Beijing（40.5°N, 116°E）

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Earth and Planetary Physics 2024年第5期8卷 753-761页

作者： YuChang Xun ZhiShan Chen LiFang Du haoran Zheng Jing Jiao ZeLong Wang ShaoHua Gong GuoTao yang College of Physics College of Electronic Information and Optical Engineering Taiyuan University of Technology State Key Laboratory of Space Weather National Space Science Center Chinese Academy of Sciences School of Science Jiangsu University of Science and Technology School of Physics and Electronics Engineering Hainan Normal University

From April 2020 to June 2022, a Ca+lidar with dual-wavelength and narrow-band emitting lasers utilizing all-solid-state technology was employed to conduct observations in Beijing（40.41°N, 116.01°E） for a total duration of 1797.79 hours over 280 nights. A total of 286 sporadic Ca+layers were observed, with heights ranging from 88 to 120 km and densities varying from 5.33 to 2200 cm-3. We simultaneously observed the ionosonde, located 28 km from the lidar, and found a correlation of 61.89% between the sporadic Ca+ layer and the sporadic E layer. When the sporadic Ca+layer has a downward phase trend, there is a correlation of 76.84%. By excluding the influence of ionosonde sensitivity, we focus only on calcium ions that have a density exceeding 140 cm-3, which exhibit a correlation of82.25%. Above 100 km, the correlation significantly increases, reaching approximately 90%. Furthermore, the correlation between the sporadic Ca+ layer and the sporadic E layer is particularly noticeable during the summer season, reaching around 90%. This phenomenon can be attributed to the variations in metal ions that occur during different seasons.

关键词： the Meridian Project lidar sporadic Ca+ layer sporadic E layer

Insight into the mechanism of 5-hydroxymethylfurfural electroreduction to 2,5-bis(hydroxymethyl)furan over Cu anchored N-doped carbon nanosheets

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Nano Research 2024年第9期17卷 7991-7999页

作者： haoran Wu Xinwei Chen Haishan Xu Runlu yang Xin Wang Junying Chen Zhenbing Xie Liang Wu Yiyong Mai School of Chemical Engineering Zhengzhou UniversityZhengzhou 450001China School of Chemistry and Chemical Engineering Frontiers Science Center for Transformative MoleculesShanghai Key Laboratory of Electrical Insulation and Thermal AgeingShanghai Jiao Tong UniversityShanghai 200240China Department of Chemistry Tangshan Normal UniversityTangshan 063000China

Design of non-noble metal electrocatalysts for biomass conversion to high-value chemicals and understanding the related catalytic mechanisms are of profound significance but have remained a major ***,we developed a novel biomass-derived electrocatalyst(denoted as Cu/NC),featuring with electron-deficient copper nanoparticles anchored on N-doped carbon nanosheets,for the electrochemical reduction of 5-hydroxymethylfurfural(HMF)to 2,5-bis(hydroxymethyl)furan(BHMF,a vital precursor of functional polymers).The optimized Cu/NC electrocatalyst exhibited an excellent performance with high Faradaic efficiency(89.5%)and selectivity(90.8%)of BHMF at a low concentration of HMF(18.1 mM).Even at a very high HMF concentration(108.6 mM),the Faraday efficiency and selectivity of BHMF could still reach 74.8%and 81.1%,*** performance approached those of the reported noble metal-based *** study revealed that the N doping in the Cu/NC catalyst could regulate the electronic structure of Cu,strengthening the adsorption of the HMF carbonyl group,and thus boosting the selectivity of ***,strong electronic metal-support interactions of Cu and the N-doped carbon support optimized the charge transfer rate,thus promoting the dissociation of water to the active hydrogen(H^(*))species and boosting the reaction kinetic rate of H^(*)and HMF.

关键词： biomass 5-hydroxymethylfurfural electrochemical reduction N-doped carbon materials 2,5-bis(hydroxymethyl)furan

Tailoring the Properties of Polyhydroxyalkanoates from Plastics to Elastomers via Stereoselective Copolymerizations of rac-β-Butyrolactone and β-Propiolactone

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Chinese Journal of Chemistry 2024年第9期42卷 963-972页

作者： haoran Zhang JiaojiaoQin Xiaoyan Tang Beijing National Laboratoryfor Molecular Sciences Key Laboratory of Polymer Chemistry and Physics of Ministry of EducationCenterfor Soft Matter Science and EngineeringCollegeof Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China

Poly(3-hydroxybutyrate),a crucial member of the large biodegradable polyhydroxyalkanoate family,suffers from its *** enhance its performance,we employed a straightforward approach involving the ring-opening copolymerization of racemic-β-butyrolactone(rac-β-BL)andβ-propiolactone(β-PL)using the syndio-selective amino-alkoxy-bis(phenolate)-yttrium complex as a catalyst,thanks to the excellent ductility of poly(3-hydroxypropionate).Control over the rac-β-BL/β-PL feeding ratios and polymerization time yielded random or block copolymers with tunable thermal and mechanical properties comparable to traditional fossil-based ***,we achieved one-pot synthesis of hard-soft-hard triblock copolymers by exploiting monomers’different copolymerization rates and a bifunctional initiator,thus transforming polyhydroxyalkanoates from hard and tough plastics to soft and ductile thermoplastic elastomers.

关键词： Ring-opening(co-)polymerization Biodegradable polymers Polyhydroxyalkanoates Copolymers Plastics Elastomers