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Chinese Chemical Letters 2024年第5期35卷 179-182页

作者： Zhenzhu Wang Chenglong liu Yunpeng Ge wencan li Chenyang Zhang Bing Yang Shizhong Mao Zeyuan Dong State Key Laboratory of Supramolecular Structure and Materials College of ChemistryJilin UniversityChangchun 130012China Center for Supramolecular Chemical Biology Jilin UniversityChangchun 130012China

Molecular weaving is a powerful approach to make molecularly woven materials that have showed unprecedented characteristics and properties intrinsically distinct to those of non-woven *** here report a facile and efficient approach for the synthesis of 2D woven supramolecular polymers by differentiated self-assembly through orthogonal noncovalent ***,the difference in binding strength of two orthogonal noncovalent interactions can be used to control the process of molecular ***,single-layered 2D woven supramolecular polymers were synthesized and fully characterized by various *** study demonstrates a controllable method for molecular weaving,and will significantly hasten the development of molecularly woven materials.

关键词： Differentiated self-assembly Double-stranded helix Molecular weaving Supramolecular chemistry Two-dimensional polymer

Versatile photonic molecule switch in multimode microresonators

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light(Science & Applications) 2024年第3期13卷 498-509页

作者： Zihan Tao Bitao Shen wencan li Luwen Xing Haoyu Wang Yichen Wu Yuansheng Tao Yan Zhou Yandong He Chao Peng Haowen Shu Xingjun Wang State Key Laboratory of Advanced Optical Communications System and Networks School of ElectronicsPeking UniversityBeijing 100871China College of Engineering Peking UniversityBeijing 100871China School of Integrated Circuits Peking University100871 BejingChina Peking University Yangtze Delta Institute of Optoelectronics Nantong 226010China Frontiers Science Center for Nano-optoelectronics Peking UniversityBeijing 100871China Peng Cheng Laboratory Shenzhen 518055China

Harnessing optical supermode interaction to construct artificial photonic molecules has uncovered a series of fundamental optical phenomena analogous to atomic ***,the distinct energy levels and interactions in such two-level systems were provided by coupled *** reconfigurability is limited,as they often require delicate external field stimuli or mechanically altering the geometric *** highly specific approaches also limit potential ***,we propose a versatile on-chip photonic molecule in a multimode microring,utilizing a flexible regulation methodology to dynamically control the existence and interaction strength of spatial *** transition between single/multi-mode states enables the“switched-off/on”functionality of the photonic molecule,supporting wider generalized applications *** particular,“switched-on”state shows flexible and multidimensional mode splitting control in aspects of both coupling strength and phase difference,equivalent to the *** *** effect.“Switched-off”state allows for perfect low-loss single-mode transition(Qi~10 million)under an ultra-compact bend size(FSR~115 GHz)in a foundry-based silicon *** breaks the stereotyped image of the FSR-Q factor trade-off,enabling ultra-wideband and high-resolution millimeter-wave photonic *** demonstration provides a flexible and portable solution for the integrated photonic molecule system,extending its research scope from fundamental physics to real-world applications such as nonlinear optical signal processing and sixth-generation wireless communication.

关键词： switched multimode millimeter

Reliable intracavity reflection for self-injection locking lasers and microcomb generation

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Photonics Research 2024年第5期12卷 I0001-I0010页

作者： BITAO SHEN XUGUANG ZHANG YIMENG WANG ZIHAN TAO HAOWEN SHU HUAJIN CHANG wencan li YAN ZHOU Zhangfeng Ge RUIXUAN CHEN BOWEN BAI liN CHANG XINGJUN WANG State Key Laboratory of Advanced Optical Communications System and Networks School of ElectronicsPeking UniversityBeijing 100871China Peng Cheng Laboratory Shenzhen 518055China Peking University Yangtze Delta Institute of Optoelectronics Nantong 226010China Frontiers Science Center for Nano-optoelectronics Peking UniversityBeijing 100871China

Self-injection locking has emerged as a crucial technique for coherent optical sources,spanning from narrow linewidth lasers to the generation of localized *** technique involves key components,namely a laser diode and a high-quality cavity that induces narrow-band reflection back into the laser ***,in prior studies,the reflection mainly relied on the random intracavity Rayleigh backscattering,rendering it unpredictable and unsuitable for large-scale production and wide-band *** this work,we present a simple approach to achieve reliable intracavity reflection for self-injection locking to address this challenge by introducing a Sagnac loop into the *** method guarantees robust reflection for every resonance within a wide operational band without compromising the quality factor or adding complexity to the fabrication *** a proof of concept,we showcase the robust generation of narrow linewidth lasers and localized microcombs locked to different resonances within a normal-dispersion ***,the existence and generation of localized patterns in a normal-dispersion cavity with broadband forward–backward field coupling is first proved,as far as we know,both in simulation and in *** research offers a transformative approach to self-injection locking and holds great potential for large-scale production.

关键词： intracavity injection locking

用户资源创新能力、创业模式与创业绩效关系研究——基于众创空间的双重网络嵌入的调节作用

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科技进步与对策 2024年第4期41卷 33-42页

作者：周劲波李炆灿广西师范大学经济管理学院广西桂林541006

资源对用户开展创业活动至关重要,但对用户创业者资源创新能力影响创业模式选择以及关于创业绩效理论机制的探讨较少。通过构建不同资源创新能力、创业模式与创新绩效之间的匹配关系模型,对221家嵌入众创空间的用户创业企业进行实证研... 详细信息

资源对用户开展创业活动至关重要,但对用户创业者资源创新能力影响创业模式选择以及关于创业绩效理论机制的探讨较少。通过构建不同资源创新能力、创业模式与创新绩效之间的匹配关系模型,对221家嵌入众创空间的用户创业企业进行实证研究。结果发现:①资源获取创新能力有助于用户创业者选择协同型创业模式并促进生存绩效提升;②资源利用创新能力有助于用户创业者选择自主型创业模式并促进成长绩效提升;③创业模式在资源创新能力对创业绩效影响中发挥部分中介作用;④众创空间双重网络嵌入对资源创新能力与创业模式关系以及创业模式与创业绩效关系发挥正向调节作用。

关键词：资源创新能力用户创业模式用户创业绩效众创空间双重网络嵌入

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N掺杂木质素对钨的吸附

河北大学学报（自然科学版） 2024年第3期44卷 269-280页

作者：张保平柯晶方诗媛李文灿武汉科技大学省部共建耐火材料与冶金国家重点实验室湖北武汉430081 武汉科技大学钢铁冶金及资源利用省部共建教育部重点实验室湖北武汉430081

木质素经胺化和季铵化改性后制备了N掺杂木质素,并用于吸附钨,通过SEM-EDS和FTIR对吸附剂进行表征,考察pH值、钨初始质量浓度、吸附时间和吸附剂用量对吸附容量的影响,利用SEMEDS、FTIR和XPS分析揭示吸附过程的机制.结果表明,N掺杂木质... 详细信息

木质素经胺化和季铵化改性后制备了N掺杂木质素,并用于吸附钨,通过SEM-EDS和FTIR对吸附剂进行表征,考察pH值、钨初始质量浓度、吸附时间和吸附剂用量对吸附容量的影响,利用SEMEDS、FTIR和XPS分析揭示吸附过程的机制.结果表明,N掺杂木质素表面疏松多孔且含有大量的酚羟基、胺基和季铵官能团,在总钨浓度为0.005 mol/L、pH<4.7时,钨的存在形态为H_(2)W_(12)O_40)^(6-).H_(2)W_(12)O_(40)^(6-)通过与N掺杂木质素中氢键的静电吸引、胺基的配合和氯离子的离子交换作用而被吸附.在pH=4.0、钨初始质量浓度为800 mg/L、吸附时间为960 min的条件下,1 g/L N掺杂木质素对钨的饱和吸附容量为421.68 mg/g.吸附过程遵循Langmuir模型和准二级动力学模型,表明吸附过程为单分子层均质化学吸附.

关键词： N掺杂木质素钨吸附行为吸附机制

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父母教养方式与儿童情绪管理能力的关系:同伴交往能力的中介作用

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教育文化论坛 2024年第4期16卷 76-86页

作者：李德显李文灿黄丽娇辽宁师范大学教育学部辽宁大连116029 华东师范大学教育学系上海200062

随着家庭教育相关理论的日臻完善,父母教养方式与儿童情绪管理的关系研究逐渐增多,提高儿童的社会交往能力成为研究热点。本研究以500名3—6岁儿童为研究对象,以莫里斯幼儿适应三重模型为参照,采用父母教养方式量表、幼儿同伴交往量表... 详细信息

随着家庭教育相关理论的日臻完善,父母教养方式与儿童情绪管理的关系研究逐渐增多,提高儿童的社会交往能力成为研究热点。本研究以500名3—6岁儿童为研究对象,以莫里斯幼儿适应三重模型为参照,采用父母教养方式量表、幼儿同伴交往量表和儿童情绪管理量表为研究工具,通过结构方程模型考察父母教养方式与儿童情绪管理能力之间的关系以及儿童的同伴交往能力在其间的中介作用。研究发现:父母教养方式、儿童同伴交往能力均与儿童情绪管理能力显著相关,三者具有交互预测作用;中介效应模型表明儿童同伴交往能力在父母教养方式对儿童情绪管理能力的影响中存在中介作用,民主性教养可以通过影响儿童同伴交往能力,间接推动其情绪管理能力的积极生长;专制性教养、溺爱性教养和放任性教养可以间接抑制儿童同伴交往能力,阻碍其情绪管理能力的提高。为提升和稳定儿童管理自身情绪的能力,父母应加强对不同教养方式的认知以及重视对儿童同伴交往能力的培养,并将这一教育理念体现在家庭教育实践之中,促进儿童身心健康发展。

关键词：父母教养方式同伴交往儿童情绪管理中介作用莫里斯幼儿适应三重模型

基于红外光谱结合化学计量学的美洲大蠊精制物CⅡ-3无损质量评价方法

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大理大学学报 2024年第8期9卷 41-45页

作者：周姣姣夏从龙李文璨王艳平李伟何正春湘潭市中心医院药学部湖南湘潭411100 大理大学药学院云南大理671000

目的:以美洲大蠊精制物CⅡ-3为研究对象,基于红外光谱结合化学计量学建立其品质无损的简易评价方法。方法:采用红外光谱法建立10批CⅡ-3样品的红外光谱,并进行基线矫正、纵坐标归一化和15点平滑等预处理方法优化光谱图;运用Origin 9.1... 详细信息

目的:以美洲大蠊精制物CⅡ-3为研究对象,基于红外光谱结合化学计量学建立其品质无损的简易评价方法。方法:采用红外光谱法建立10批CⅡ-3样品的红外光谱,并进行基线矫正、纵坐标归一化和15点平滑等预处理方法优化光谱图;运用Origin 9.1软件对光谱数据进行表征和解析,建立10批CⅡ-3样品的指纹图谱,并进行相似度分析和主成分分析。结果:10批CⅡ-3样品红外光谱的官能团区主要特征峰为3300、2960、2930、1660、1630、1550、1450、1390 cm-1,指纹区主要特征峰为1240、1080、621、546 cm-1。不同批次CⅡ-3样品红外光谱的峰形、峰位和峰强相似,相关系数均在0.960以上。主成分分析结果显示10批CⅡ-3样品聚为一类。结论:该方法操作简单、专属性强、不破坏样品,可实现CⅡ-3样品的无损质量评价。

关键词：美洲大蠊 CⅡ-3 红外光谱相似度分析主成分分析无损质量评价

Feasibility of low-intensity ultrasound treatment with hydroxylamine to accelerate the initiation of partial nitrification and allow operation under intermittent aeration

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Journal of Environmental Sciences 2024年第5期139卷 446-459页

作者： Jianxiong Jian Xiaojian liao Zhihua Mo Shoupeng li Lei li Shaojin Chen Zhenhua Huang Junhao Chen wencan Dai Shuiyu Sun Guangzhou Key Laboratory Environmental Catalysis and Pollution Control Guangdong Key Laboratory of Environmental Catalysis and Health Risk ControlSchool of Environmental Science and EngineeringInstitute of Environmental Health and Pollution ControlGuangdong University of TechnologyGuangzhou 510006China Guangdong Province Solid Waste Recycling and Heavy Metal Pollution Control Engineering Technology Research Center Guangdong Polytechnic of Environmental Protection EngineeringFoshan 528216China Analysis and Test Center Guangdong University of TechnologyGuangzhou 510006China

Partial nitrification is a key aspect of efficient nitrogen removal,although practically it suf-fers from long start-up cycles and unstable long-term operational *** address these drawbacks,this study investigated the effect of low intensity ultrasound treatment combined with hydroxylamine(NH2OH)on the performance of partial *** showthat compared with the control group,low-intensity ultrasound treatment(0.10W/mL,15 min)combined with NH2OH(5 mg/L)reduced the time required for partial nitrification initiation by 6 days,increasing the nitrite accumulation rate(NAR)and ammonia nitro-gen removal rate(NRR)by 20.4% and 6.7%,respectively,achieving 96.48% ***-tic analysis showed that NH2OH enhanced ammonia oxidation,inhibited nitrite-oxidizing bacteria(NOB)activity and shortened the time required for partial nitrification ***,ultrasonication combined with NH2OH dosing stimulated EPS(extracellular polymeric substances)secretion,increased carbonyl,hydroxyl and amine functional group abundances and enhanced mass *** addition,16S rRNA gene sequencing results showed that ultrasonication-sensitive Nitrospira disappeared from the ultrasound+NH_(2)OH system,while Nitrosomonas gradually became the dominant ***,the results of this study provide valuable insight into the enhancement of partial nitrification start-up during the process of wastewater nitrogen removal.

关键词： Partial nitrification Low-intensity ultrasound Hydroxylamine Ammonia oxidizing bacteria Nitrite oxidizing bacteria

Forensic appraisal of death due to acute alcohol poisoning:three case reports and a literature review

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Forensic Sciences Research 2020年第4期5卷 341-347页

作者： Hui Wang Hongmei Xu wencan li Beixu li Qun Shi Kaijun Ma Bi Xiao Long Chen Department of Forensic Medicine School of Basic Medical SciencesFudan UniversityShanghaiChina Institute of Criminal Scientific Technology Shanghai Public Security BureauPudong BranchShanghaiChina Forensic Laboratory Criminal Science and Technology InstituteShanghai Public Security BureauShanghaiChina

Death due to acute alcohol poisoning lacks specific anatomical characteristics,compared with other deaths due to drug *** report three forensic cases of death from acute alcohol poisoning due to inhibition of the respiratory centre and eventual *** alcohol concentrations in the three fatalities were 5.28,3.33 and 3.78mg/mL,*** doses and blood alcohol concentrations showed differences between *** auxiliary tests besides autopsy were *** cases show that forensic scientists should exclude other causes of death,combine the autopsy with auxiliary tests,and then make an appraisal.

关键词： Forensic sciences forensic pathology acute alcohol poisoning blood alcohol concentration central nervous system depression

用户创业学习、创业能力与创业绩效的影响关系——基于众创空间网络嵌入的调节作用

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科技管理研究 2023年第23期43卷 195-203页

作者：周劲波李炆灿广西师范大学经济管理学院广西桂林541006

为给用户创业者管理企业和提升创业绩效提供一定的参考依据,从用户创业者入手,基于对237名用户创业者的调研,探究用户创业学习、用户创业能力及用户创业绩效之间的关系,并研究众创空间网络嵌入的调节作用。研究表明,用户创业学习对用户... 详细信息

为给用户创业者管理企业和提升创业绩效提供一定的参考依据,从用户创业者入手,基于对237名用户创业者的调研,探究用户创业学习、用户创业能力及用户创业绩效之间的关系,并研究众创空间网络嵌入的调节作用。研究表明,用户创业学习对用户创业绩效有显著正向影响;用户创业能力在创业学习对用户创业绩效的影响作用中起部分中介作用;众创空间网络嵌入在用户创业学习对用户创业能力的影响作用中,以及在用户创业能力对用户创业绩效的影响作用中均起正向调节作用。由此提出用户创业者要认识到创业学习的重要性并积极嵌入到众创空间网络中;除此之外,政府应高度重视众创空间促进创新创业发展的重要作用,进一步加大对众创空间的资金支持、政策扶持,同时加强对众创空间的监督和管理,确保为创业者提供优质的创业服务和创业环境。

关键词：用户创业创业学习创业能力用户创业绩效众创空间网络嵌入