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Particuology 2024年第5期88卷 210-217页

作者： Yuanting Wu xiaoying wang Wenlong Zhong Shan Zhang School of Material Science and Engineering Shaanxi University of Science and TechnologyXi'an 710021China

Heterogeneous photocatalysts exhibit high catalytic efficiency in the degradation of pollutants,but their stability and repeatability is not very good and requires high structural *** by nanosizing the pure Bi_(2)WO_(6)(BWO)photocatalyst without constructing a heterojunction,there is a significant improvement in its performance,with an enhancement effect of about 2.3 times(99.43%).The high photocatalytic degradation efficiency of the material can be attributed to the enhanced light absorption effect brought by the three-dimensional inverse-opal structure SiO_(2)(IS)and the abundant surface adsorbed oxygen generated after the formation of Si–O–W *** addition,the introduction of IS greatly increases the surface area of nanostructured BWO,which accelerates the charge transfer process,while the adsorbed oxygen promotes the participation of·O^(2−) in the photocatalytic reaction,thereby accelerating the consumption of photo-generated electrons and ultimately improving the separation of charge ***,the matched photonic bandgap further improves the absorption and utilization of light of the *** this work,we constructs Si–O–W bonds to obtain inverse-opal SiO_(2)/Bi_(2)WO_(6) with uniformly growth of pure phase nano BWO,which provides a feasible strategy for the preparation of high-performance pure-phase photocatalysts.

关键词： Bi_(2)WO_(6) SiO_(2) inverse-opal structure Photocatalysis Adsorbed oxygen

Shedding light on the reversible deactivation of carbon-supported single-atom catalysts in hydrogenation reaction

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Nano Research 2024年第6期17卷 4807-4814页

作者： Runze Chen xiaoying wang Jianfei Dang Songjie Yun Liqiang wang Fangong Kong You-Nian Liu State Key Laboratory of Biobased Material and Green Papermaking Qilu University of TechnologyJinan 250353China School of Material Science and Engineering Zhengzhou UniversityZhengzhou 450001China School of Chemical Engineering Zhengzhou UniversityZhengzhou 450001China Hunan Provincial Key Laboratory of Micro&Nano Materials Interface Science College of Chemistry and Chemical EngineeringCentral South UniversityChangsha 410083China

Carbon-supported single-atom catalysts were found to suffer reversible deactivation in catalytic hydrogenation,but the mechanism is still ***,nitro compounds hydrogenation catalyzed by N-doped carbon-supported Co single atom(Co1/NC)was taken as a model to uncover the mechanism of the reversible deactivation ***1/NC exhibited moderate adsorption towards the substrate molecules(i.e.,nitro compounds or related intermediates),which could be strengthened by the confinement effect from the porous ***,substrate molecules tend to accumulate within the pore channel,especially micropores that host Co1,making it difficult for the reactants to access the active sites and finally leading to their *** situation could be even worse when the substrate molecules possess a large ***,the catalytic activity of Co1/NC could be restored via a simple thermal treatment,which could remove the adsorbates within the pore channel,hence releasing active sites that were originally inaccessible to reactants.

关键词： single-atom catalysts porous carbon support reversible deactivation mechanistic study hydrogenation reaction

Biomimetic 3D printing of composite structures with decreased cracking

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NANOTECHNOLOGY AND PRECISION ENGINEERING 2024年第3期7卷 24-34页

作者： Du, Fan Li, Kai Li, Mingzhen Fang, Junyang Sun, Long wang, Chao wang, Yexin Liu, Maiqi Li, Jinbang wang, xiaoying Ningbo Univ Sch Mech Engn & Mech Ningbo 315211 Peoples R China China Univ Min & Technol Sch Mech & Elect Engn Xuzhou 221116 Peoples R China Ningbo Univ Inst Adv Energy Storage Technol & Equipment Ningbo 315211 Peoples R China Ningbo Univ Sch Civil & Environm Engn & Geog Sci Ningbo Peoples R China

The development of tissue engineering and regeneration research has created new platforms for bone transplantation. However, the preparation of scaffolds with good fiber integrity is challenging, because scaffolds prepared by traditional printing methods are prone to fiber cracking during solvent evaporation. Human skin has an excellent natural heat-management system, which helps to maintain a constant body temperature through perspiration or blood-vessel constriction. In this work, an electrohydrodynamic-jet 3D-printing method inspired by the thermal-management system of skin was developed. In this system, the evaporation of solvent in the printed fibers can be adjusted using the temperature-change rate of the substrate to prepare 3D structures with good structural integrity. To investigate the solvent evaporation and the interlayer bonding of the fibers, finite-element analysis simulations of a three-layer microscale structure were carried out. The results show that the solvent-evaporation path is from bottom to top, and the strain in the printed structure becomes smaller with a smaller temperature-change rate. Experimental results verified the accuracy of these simulation results, and a variety of complex 3D structures with high aspect ratios were printed. Microscale cracks were reduced to the nanoscale by adjusting the temperature-change rate from 2.5 to 0.5 degree celsius s(-1). Optimized process parameters were selected to prepare a tissue engineering scaffold with high integrity. It was confirmed that this printed scaffold had good biocompatibility and could be used for bone-tissue regeneration. This simple and flexible 3D-printing method can also help with the preparation of a wide range of micro- and nanostructured sensors and actuators. (c) 2024 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license(https://***/licenses/by/4.0/).

关键词： 3D printing Electrohydrodynamic jet Biomimetic Structural integrity Composite scaffold SCAFFOLDS OSTEOPOROSIS

An intelligent prediction model of epidemic characters based on multi-feature

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CAAI Transactions on Intelligence Technology 2024年第3期9卷 595-607页

作者： xiaoying wang Chunmei Li Yilei wang Lin Yin Qilin Zhou Rui Zheng Qingwu Wu Yuqi Zhou Min Dai Information Center Third Affiliated Hospital of Sun Yat‐sen UniversityGuangzhouChina School of Computer Science Qufu Normal UniversityRizhaoChina Department of Allergy Third Affiliated Hospital of Sun Yat‐sen UniversityGuangzhou China 4Department of Otorhinolaryngology‐Head and Neck Surgery Third Affiliated Hospital of Sun Yat‐sen UniversityGuangzhouChina Department of Pulmonary and Critical Care Medicine Third Affiliated Hospital of Sun Yat‐sen UniversityGuangzhouChina Department of Traditional Chinese Medicine Third Affiliated Hospital of Sun Yat‐sen UniversityGuangzhouChina

The epidemic characters of Omicron(***-scale transmission)are significantly different from the initial variants of *** data generated by large-scale transmission is important to predict the trend of epidemic ***,the re-sults of current prediction models are inaccurate since they are not closely combined with the actual situation of Omicron *** consequence,these inaccurate results have negative impacts on the process of the manufacturing and the service industry,for example,the production of masks and the recovery of the tourism *** authors have studied the epidemic characters in two ways,that is,investigation and ***,a large amount of data is collected by utilising the Baidu index and conduct questionnaire survey concerning epidemic ***,theβ-SEIDR model is established,where the population is classified as Susceptible,Exposed,Infected,Dead andβ-Recovered persons,to intelligently predict the epidemic characters of *** thatβ-Recovered persons denote that the Recovered persons may become Sus-ceptible persons with probabilityβ.The simulation results show that the model can accurately predict the epidemic characters.

关键词： artificial intelligence big data data analysis evaluation feature extraction intelligent information processing medical applications

Effects of lighting conditions and accommodation on the three-dimensional position of Visian implantable collamer lens

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Eye and Vision 2024年第3期10卷 31-40页

作者： Lingling Niu Zhe Zhang Huamao Miao Jing Zhao xiaoying wang Ji C.He Xingtao Zhou Department of Ophthalmology and Optometry Eye&ENT HospitalFudan UniversityShanghaiChina NHC Key Laboratory of Myopia(Fudan University) ShanghaiChina Key Laboratory of Myopia Chinese Academy of Medical SciencesShanghaiChina Shanghai Research Center of Ophthalmology and Optometry ShanghaiChina New England College of Optometry MABostonUSA

Background To investigate the effects of lighting conditions and accommodation on the three-dimensional position of Visian implantable collamer lens(ICL V4c).Methods This observational study recruited 62 eyes of 31 myopia patients underwent ICL V4c *** segment optical coherence tomography(AS-OCT)assessed the anterior chamber depth(ACD),ACD-ICL(distance from the corneal endothelium to anterior surface of the ICL V4c),vault(distance between the posterior ICL V4c surface and anterior crystalline lens surface),and crystalline lens tilt under various lighting conditions and accommodation relative to the corneal topographic axis at one year after ICL V4c *** was defined as the scotopic condition,which was also the non-accommodative stimulus *** ICL V4c tilt was analyzed using *** significance level was set at P<*** The ACD-ICL values were similar under various lighting conditions(P=0.978)but decreased during accommodation(P<0.001).The vault was significantly smaller under mesopic and photopic conditions than the baseline(P=0.044 and P<0.001,respectively)but remained unchanged during accommodation(P=0.058).The inferotemporal proportion of ICL V4c(88.7%,55 eyes)and crystalline lens(74.2%,46 eyes)tilts were not significantly different(P=0.063).Crystalline lens under various lighting conditions and accommodation exhibited similar *** vertical tilt of ICL V4c was significantly larger under photopic conditions than the baseline(P=0.038).The horizontal and total tilts were significantly decreased during accommodation(P=0.043 and 0.013,respectively).Conclusions The axial position of ICL V4c in the anterior chamber was stable under various lighting *** conditions and accommodation may influence vertical,horizontal and total tilts of ICL V4c.

关键词： Implantable collamer lens Anterior segment optical coherence tomography Myopia Tilt

Pentacoordinate Phosphoranes as Versatile Reagents in Fluoroalkylation Reactions

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CCS Chemistry 2024年第1期6卷 165-176页

作者： Huanhuan Song Weihao Li xiaoying wang Kaiteng wang Jingwen Li Shuai Liu Pin Gao Xin-Hua Duan Jinbo Hu Mingyou Hu School of Chemistry Engineering Research Center of Energy Storage Materials and DevicesMinistry of EducationXi’an Key Laboratory of Sustainable Energy Material ChemistryXi’an Jiaotong UniversityXi’an 710049 Key Laboratory of Organofluorine Chemistry Center for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of SciencesShanghai 200032

A general method for the synthesis of bench-stable bis(difluoromethyl)pentacoordinate phosphoranes has been *** reaction is rapid,operationally simple,and easily *** pentacoordinate phosphoranes can generate both difluoromethyl radical(·CF_(2)H)and difluorocarbene(:CF_(2))***,a variety of fluoroalkylation transformations havebeen achieved by·CF_(2)H,such asoxidativedifluoromethylation of electron-deficient heterocycles,nickel/photoredox dual-catalyzed difluoromethylation of aryl bromides,and photoredox difluoromethylation of alkenes,or by:CF_(2),such as gem-difluorocyclopropanation of alkenes,base-promoted difluoromethylation of heteroatom nucleophiles,Pd-catalyzed difluoromethylation of arylboronic acids,and Cu-mediated trifluoromethylation of aryl iodides(via:CF_(2) and recombined CF_(3)-).These fluoroalkylation methods have been successfully applied to late-stage fluoroalkylation of drugs and drug-like molecules.

关键词： pentacoordinate phosphorane difluoromethyl radical difluorocarbene difluoromethylation fluoroalkylation

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数据牢笼与批评突围

中国文学批评 2024年第3期 163-171,192页

作者：王小英暨南大学文学院广州510632

数据逻辑在整个网络文学实践中已经底层化和结构化,在此基础之上的批评前置了数据思维,暗含了数据的蛮力。网络文学数据批评所能获得的数据十分有限。在平台的数据垄断下,身处数据牢笼的批评者借助软件进行的研究,变成了既没有全数据支... 详细信息

数据逻辑在整个网络文学实践中已经底层化和结构化,在此基础之上的批评前置了数据思维,暗含了数据的蛮力。网络文学数据批评所能获得的数据十分有限。在平台的数据垄断下,身处数据牢笼的批评者借助软件进行的研究,变成了既没有全数据支撑,又需要借助有偏差的软件模型,然后根据自身的统计素养来辅助操作的数据批评。数据批评在实际运用中经常表现为简单的量化分析和解读。它存在明显的遮蔽性,需要依赖于一定的理念和阐释,提升人文思辨的力度,使文学批评在定性分析与定量分析的无缝衔接中不断前进。

关键词：网络文学数据数字人文定量文学研究实验

正念教养与学前儿童问题行为的关系:亲子关系与心理弹性的链式中介

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心理发展与教育 2024年第4期40卷 533-541页

作者：黄鹤王小英苏州科技大学教育学院苏州215000 东北师范大学教育学部长春130024

本研究基于发展情境论与资源保存理论考察正念教养对学前儿童问题行为的影响及其作用机制。采用正念教养问卷、亲子关系量表、第二版Devereux幼儿心理弹性评估量表及长处与困难问卷对27所幼儿园的1712名学前儿童及其家长进行调查。结果... 详细信息

本研究基于发展情境论与资源保存理论考察正念教养对学前儿童问题行为的影响及其作用机制。采用正念教养问卷、亲子关系量表、第二版Devereux幼儿心理弹性评估量表及长处与困难问卷对27所幼儿园的1712名学前儿童及其家长进行调查。结果显示:(1)正念教养显著预测学前儿童内化问题行为、外化问题行为;(2)亲子亲密、亲子冲突与心理弹性分别在正念教养与学前儿童内化问题行为、外化问题行为中起独立中介作用;(3)亲子亲密、亲子冲突与心理弹性在正念教养与内化问题行为、外化问题行为中起链式中介作用。本研究可为预防与干预学前儿童问题行为提供一定的理论参考。

关键词：学前儿童正念教养亲子关系心理弹性问题行为

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荧光纸基微流控芯片在食品检测领域中的应用

林业工程学报 2024年第4期9卷 1-11页

作者：王小英王玄蔡济海华南理工大学制浆造纸工程国家重点实验室广州510640

食品安全事故频发,引发全球对食品安全的广泛关注。为了保障食品的质量和安全,研究人员已经开发了各种快速和灵敏的检测方法,用于分析各种食品成分和污染物。纸基微流控芯片(μPADs)是以纸张为主要基版,使生化反应小型化的微实验室分析... 详细信息

食品安全事故频发,引发全球对食品安全的广泛关注。为了保障食品的质量和安全,研究人员已经开发了各种快速和灵敏的检测方法,用于分析各种食品成分和污染物。纸基微流控芯片(μPADs)是以纸张为主要基版,使生化反应小型化的微实验室分析系统。近年来,μPADs在芯片设计和功能集成方面发展迅速,因其成本低、样品体积小和携带方便等优点,在快速检测中具有独特的应用潜力,已广泛用于保障食品安全。与其他检测方法相比,基于荧光法的μPADs具有选择性好和灵敏度高等优点,能够快速准确地测定目标物,满足现场检测的需求,为食品检测提供理想的解决方案。其在不同的实际应用中显示出广阔的前景,能测定食品中的各种污染物,包括病原微生物(大肠杆菌、金黄色葡萄球菌、沙门氏菌、单核细胞增生李斯特菌和副溶血性弧菌)、有害化学物质(农药、苏丹红染料、亚硝酸盐、甲醛和抗生素)和重金属离子(铅、镉、汞、砷、铬)等。笔者介绍了μPADs的基本概念,包括纸作为基材的优点以及二维和三维芯片的特点,重点介绍了荧光检测原理以及在食品检测领域中的应用。研究结果将有助于开发和应用更多新型基于荧光分析方法的μPADs,并为开发准确、灵敏、便捷的食品污染物检测方法提供参考。

关键词：纸基微流控芯片荧光食品检测食品污染物

OECD学前教育政策的转向及其动因、现实隐忧与反思

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外国教育研究 2024年第5期51卷 77-89页

作者：单文顶王小英江苏理工学院教育学院江苏常州213001 东北师范大学教育学部吉林长春130024

自涉足学前教育以来,OECD学前教育政策经历了从主张多样化发展到追求“最佳实践”的转向。“全球教育改革运动”的盛行、构建全球标准化教育治理体系的需要、国家/地区间学前教育发展差异明显是这一转向背后的主要动因。这一转向也带来... 详细信息

自涉足学前教育以来,OECD学前教育政策经历了从主张多样化发展到追求“最佳实践”的转向。“全球教育改革运动”的盛行、构建全球标准化教育治理体系的需要、国家/地区间学前教育发展差异明显是这一转向背后的主要动因。这一转向也带来了多重现实隐忧,体现在矮化学前教育的育人价值、造成学前教育的“文化殖民”、遮蔽学前教育的“复杂性”、引发学前教育政策的“趋同化”。应审慎对待最佳实践的“价值”与“效能”平衡问题、数据依赖性问题以及应用限度问题。

关键词： OECD 学前教育政策最佳实践多样化发展