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历史建筑普查方法与保护传承体系构建——以辽宁朝阳为例

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中国文化遗产 2024年第1期119卷 76-85页

作者：张亚宣王现石徐明中国城市规划设计研究院历史文化名城保护与发展研究分院北京100044

历史建筑是城乡历史文化的重要物质载体,普查认定工作对于构建保护传承体系具有重要意义。本研究以朝阳市历史建筑普查工作为基础,采用田野调查、类型学、演绎等研究方法,一方面,探索出一套“谋定后动—靶向锁定—共谋共建——摸清家底... 详细信息

历史建筑是城乡历史文化的重要物质载体,普查认定工作对于构建保护传承体系具有重要意义。本研究以朝阳市历史建筑普查工作为基础,采用田野调查、类型学、演绎等研究方法,一方面,探索出一套“谋定后动—靶向锁定—共谋共建——摸清家底”的全流程历史建筑普查的技术方法,实现“空间全覆盖、要素全囊括”;另一方面,以历史文化价值为导向,分析普查对象的聚集性特征,从整体、系统的角度来进一步推进历史文化街区和历史地段的划定,注重历史建筑与历史城区、历史村镇、历史文化街区、历史地段、文物之间的关联性,实现对全域保护传承体系构建的支撑。在一定程度上也为保护规划的调研方法、潜在保护对象的盘点与挖掘,历史文化价值认知理念、历史文化保护传承体系构建、线性文化遗产的保护利用,以及第四次全国文物普查工作等提供理论参考。

关键词：历史建筑历史文化价值文物普查保护传承体系

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四个维度下的高等数学课程思政改革与实践

大学数学 2024年第1期40卷 31-35页

作者：张雅轩张翠杰陈博中国民航大学理学院数学系天津300300

结合高等数学课程的教学实践,从四个维度探讨了课程思政的改革实践方法.认为教师应紧密结合教学内容,兼顾古今中外,走在时代前沿,渗透课堂内外,全员全过程全方位将课程思政贯穿课程教学的全部环节,传授数学理论知识,并以知识为载体培育... 详细信息

结合高等数学课程的教学实践,从四个维度探讨了课程思政的改革实践方法.认为教师应紧密结合教学内容,兼顾古今中外,走在时代前沿,渗透课堂内外,全员全过程全方位将课程思政贯穿课程教学的全部环节,传授数学理论知识,并以知识为载体培育学生的逻辑思维、科学精神、科学伦理与人文情怀.

关键词：高等数学课程思政教学内容 “三全”育人

酰肼类成核剂己二酸二苯基二酰肼对PBS复合材料性能的影响

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工程塑料应用 2024年第1期52卷 146-151页

作者：张雅轩任亮马辉张月莉沈韵达王耀彬王娇长春工业大学化学工程学院长春130012 合成树脂与特种纤维教育部工程研究中心长春130012

聚丁二酸丁二酯(PBS)是近些年兴起的一类绿色环保高分子材料,具有良好的生物可降解性和生物相容性,是最具发展潜力的环境友好材料之一。然而PBS冲击强度较低,结晶性能较差,限制了其进一步的发展和应用。针对以上不足,采用酰肼类成核剂... 详细信息

聚丁二酸丁二酯(PBS)是近些年兴起的一类绿色环保高分子材料,具有良好的生物可降解性和生物相容性,是最具发展潜力的环境友好材料之一。然而PBS冲击强度较低,结晶性能较差,限制了其进一步的发展和应用。针对以上不足,采用酰肼类成核剂己二酸二苯基二酰肼(TMC-306)对PBS树脂进行改性,研究了酰肼类成核剂的添加量对PBS复合材料力学性能、结晶性能、加工性能以及微观形貌的影响。结果表明,TMC-306的引入明显改善了PBS/TMC-306复合材料的力学性能和结晶性能,当TMC-306添加量为15份时,PBS复合材料的冲击强度从41 J/m提高至102 J/m,提升了149%,结晶度从48.40%提高至62.01%,提升了28.12%。X射线衍射测试结果表明,成核剂TMC-306使复合材料晶面的衍射峰面积略微增大,与纯PBS晶型基本一致。流变测试结果发现,随着成核剂添加量的增加,PBS复合材料的储能模量、损耗模量和复数黏度均逐步增大,熔体强度得到了提高,这说明成核剂同时也改善了复合材料的加工性能。扫描电子显微镜测试结果表明,随着TMC-306的增加,PBS复合材料的断面由平整光滑变为“阶梯”式结构,且在添加量为15份时最为明显,这与力学测试结果相一致。

关键词：聚丁二酸丁二酯酰肼类成核剂复合材料性能

超高效液相色谱串联质谱法测定成都市某饮用水厂中的亚硝胺类消毒副产物

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成都信息工程大学学报 2024年第3期39卷 361-368页

作者：肖斐芮张雅萱方淑红孙静成都信息工程大学资源环境学院四川成都610225

自来水中亚硝胺类消毒副产物与常见的卤代消毒副产物比较,存在更高的毒性和致癌风险,近年来引起更多重视。拟在现有相关研究基础上优化自来水中亚硝胺类消毒副产物的超高效液相色谱串联质谱(UPLC-MS/MS)的检测方法,并对成都市某次氯酸... 详细信息

自来水中亚硝胺类消毒副产物与常见的卤代消毒副产物比较,存在更高的毒性和致癌风险,近年来引起更多重视。拟在现有相关研究基础上优化自来水中亚硝胺类消毒副产物的超高效液相色谱串联质谱(UPLC-MS/MS)的检测方法,并对成都市某次氯酸钠消毒工艺的自来水厂中饮用水处理工艺过程中的亚硝胺浓度进行调查。选用活性炭固相萃取柱对水样中ng/L级别的亚硝胺类副产物进行富集净化,色谱柱采用ACQUITYPremierHSST3柱(1.8μm,2.1 mm×50 mm),乙腈和10 mmol/L乙酸铵/乙酸缓冲溶液(pH=4.1)作为流动相进行梯度洗脱,电喷雾离子源正离子模式,采集时选择多反应监测模式,以二甲基亚硝胺-d_(6)为回收率指示物,亚硝基二丙胺d_(14)为定量内标,建立UPLC-MS/MS同时检测自来水中主要的9种亚硝胺类消毒副产物的分析方法。针对9种亚硝胺的方法检出限为1.04~2.19 ng/L,回收率74.71%~91.58%,标准曲线(省略样品前处理步骤)的线性范围为5~200μg/L,线性相关系数r>0.99。二甲基亚硝胺的检出限低于《生活饮用水卫生标准》(GB 5749-2022)中规定的限值。前处理方法操作简单,能同时测定9种亚硝胺类消毒副产物。2022年4月对成都市某自来水厂进行实际调查,9种亚硝胺类消毒副产物均未检出,说明水源水中氨氮浓度较低的情况下,次氯酸钠消毒工艺对亚硝胺的形成影响不明显。

关键词：亚硝胺类消毒副产物饮用水厂消毒工艺超高效液相色谱串联质谱

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补阳还五汤治疗偏头痛临床效果Meta分析

中国中医药现代远程教育 2024年第1期22卷 85-88页

作者：张雅萱张文静刘梦郭闫葵山东中医药大学中医学院山东济南250014 济南市中医医院脑病科山东济南250012

目的通过Meta分析系统地评价补阳还五汤治疗偏头痛的临床效果。方法从数据库中检索自建库至2022年2月期间与此研究相关的临床随机对照试验(RCT)的文献。进行文献筛选和数据提取后,对纳入的研究使用RevMan 5.3软件处理分析。结果相对危险... 详细信息

目的通过Meta分析系统地评价补阳还五汤治疗偏头痛的临床效果。方法从数据库中检索自建库至2022年2月期间与此研究相关的临床随机对照试验(RCT)的文献。进行文献筛选和数据提取后,对纳入的研究使用RevMan 5.3软件处理分析。结果相对危险度(RR)=1.25,95%的可信区间(95%CI)为[1.20,1.31],Z=9.67,P<0.00001,提示补阳还五汤组与常规西药组临床疗效的差异具有统计学意义,运用补阳还五汤治疗偏头痛的临床效果好于常规西药。漏斗图左右大致对称,提示存在发表偏倚的风险比较低。结论运用补阳还五汤治疗偏头痛比常规西药更具优势。

关键词：头风偏头痛补阳还五汤随机对照试验 Meta分析

Geochemical investigation of low latitude black shale intervals of the Lower to Middle Jurassic succession, Indus Basin, Pakistan

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Frontiers of Earth Science 2022年第3期16卷 568-586页

作者： Fahad ALI Shiqi zhang Muhammad HANIF Mohibullah MOHIBULLAH yaxuan zhang Muhammad USMAN Sheng WANG Xueliang LIU Pengjie MA Dongmou HUANG School of Geosciences China University of Petroleum(East China)Qingdao 266580China Department of Geology Bacha Khan UniversityCharsadda 24430Pakistan National Centre of Excellence in Geology University of PeshawarPeshawar 25000Pakistan Department of Geology University of BalochistanQuetta 87300Pakistan School of geosciences The University of EdinburghEdinburghEH89JUUK Lukeqin Oil Production Plant PetroChina Tuha OilfieldTurpan City 828202China

The Lower to Middle Jurassic sedimentary succession is dominated by siliciclastics with a significant amount of black shales in the Indus Basin,*** outcrop samples have been studied using an integrated approach to interpret the conceptual depositional setting from carbon and oxygen isotopes(δ^(13)C&δ18O),organic geochemistry,and palynofacies with major and trace element *** interpretation of trace element data,various single and elemental ratios have been used in this research to unlock the geological history of the studied ***/Al is 1.96 for high-potential source rock and 7.82 for non-potential source rock,and Cr(less than 1)indicates low clastic input with low oxygen for stratified and stagnant *** ratios of V/(V+Cr),V/(V+Ni),V/Mo,V/Ni,(Cu+Mo)/Zn,Mo/Al,isotopic values ofδ^(13)C andδ18O and besides the V/Cr elemental ratio,all proxies indicate that there are oxygen-depleted anoxic conditions at high potentials,while in non-potential source rock,these ratios show oxic to sub-oxic *** addition to the trace element correlation with total organic carbon,the influx of organic matter is determined by the palynoafacies analysis,which indicates mixed terrestrial and marine organic influx in high-potential source rock and vice ***,the studies of palynofaceis DFPF A-D and SFPF A-B suggest that the depositional setting of black shale occurred in the anoxic proximal to distal *** results suggest that the regional and local occurrence of black shale during the Lower to Middle Jurassic and its geological condition were addressed,and these play an important role in its depositional and paleooceanographic setting in the Eastern Tethys.

关键词： black shale Jurassic trace elements organic matter Indus Basin Pakistan

Biomass-based materials for advanced supercapacitor:principles,progress,and perspectives

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Aggregate 2024年第1期5卷 95-114页

作者： yaxuan Wang Ting Xu Kun Liu Meng zhang Xu-Min Cai Chuanling Si State Key Laboratory of Biobased Fiber Manufacturing Technology Tianjin Key Laboratory of Pulp and PaperTianjin University of Science and TechnologyTianjinChina Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources College of Chemical EngineeringNanjing Forestry UniversityNanjingChina

Supercapacitors exhibit considerable potential as energy storage devices due to their high power density,fast charging and discharging abilities,long cycle life,and *** the increasing environmental concerns associated with synthetic compounds,the use of environment friendly biopolymers to replace conventional petroleum-based materials has been widely ***-based materials are biodegradable,renewable,environment friendly and *** unique hierarchical nanostructure,excellent mechanical properties and hydrophilicity allow them to be used to create functional conductive materials with precisely controlled structures and different *** this review,the latest development of biomass-based supercapacitor materials is reviewed and *** paper describes the physical and chemical properties of various biopolymers and their impact on supercapacitors,as well as the classification and basic principles of ***,a comprehensive discussion is presented on the utilization of biomass-based materials in supercapacitors and their recent applications across a range of supercapacitor ***,an overview of the future prospects and challenges pertaining to the utilization of biomass-based materials in supercapacitors is provided.

关键词： biomass electrodes electrolyte energy storage supercapacitor

Recent advances in magnetic molecularly imprinted polymers and their application in the food safety analysis

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未来食品学报(英文) 2024年第1期4卷 1-20页

作者： Beibei Jia Feng Feng Xiujuan Wang yaxuan Song Feng zhang Institute of Food Safety Chinese Academy of Inspection and QuarantineBeijing 100176China Key Laboratory of Food Quality and Safety for State Market Regulation Beijing 100176China

Food safety is a worldwide concern and is directly related to human ***,convenient,effective,and economical methods and technologies for food safety analysis have been developed *** molecularly imprinted polymers(MMIPs)have gained extensive attention in recent years,as they have high selectivity,high adsorption capacity,and are easy to isolate from food ***,advanced strategies for the synthesis of MMIPs have been proposed to solve problems of template leakage and non-specific adsorption,and to increase the biocompatibility,adsorption rate,as well as adsorption capacity of the imprinted *** this review,we focus on new attempts at modification of magnetic core and MMIPs’surfaces,and the selection of template,functional monomer,cross-linker as well as *** are summarized that used advanced MMIPs for the recognition and adsorption of pesticide residues,veterinary drug residues,mycotoxins,contaminants,and adulterations in foodstuffs over the last 5 ***,some still existing challenges and future prospects to further promote MMIPs properties are also discussed.

关键词： Food safety Magnetic molecularly imprinted polymers Pesticide residues Mycotoxins Contaminants

Long-Range Electronic Effect-Promoted Ring-Opening Polymerization of Thioctic Acid to Produce Biomimetic Ionic Elastomers for Bioelectronics

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CCS Chemistry 2024年第3期6卷 761-773页

作者： Hongfei Huang Huijing Wang Lijie Sun Ruohan zhang Luzhi zhang ZekaiWu yaxuan Zheng Yang Wang Wei Fu Youwei zhang Rasoul Esmaeely Neisiany Zhengwei You State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringInstitute of Functional MaterialsDonghua UniversityResearch Base of Textile Materials for Flexible Electronics and Biomedical Applications(China Textile Engineering Society)Shanghai Engineering Research Center of Nano-Biomaterials and Regenerative MedicineShanghai 201620 Institute of Pediatric Translational Medicine Shanghai Children’s Medical CenterSchool of MedicineShanghai Jiao Tong UniversityShanghai 200127 Department of Materials and Polymer Engineering Faculty of EngineeringHakim Sabzevari UniversitySabzevar ***

Poly(disulfide)s have been widely used in flexible wearable electronics,smart materials,and drug *** synthesis of poly(disulfide)s usually utilizes external stimuli or toxic initiators to promote the ***,we indicated that the long-range electronic effect can significantly alter the reactivity of the disulfide ***,we established deprotonation-promoted ring-opening polymerization of thioctic acid(TA)as a highly effective and simple method to synthesize poly(disulfide)s due to the long-range electronic effect and nucleophilic *** external stimuli and initiators,simple mixing of TA and deprotonation reagent,choline bicarbonate,in different ratios at room temperature rapidly produced a series of high molecular weight(up to 772 kDa)ionic liquid crystal poly(disulfide)s elastomers with room temperature self-healing ability,adjustable conductivity(2.39×10^(−2)∼0.28×10^(−2)S m^(−1)),degradability,biocompatibility,antibacterial property,and tissue-like softness(Young’s moduli ranging from 18.2±6.0 to 111.1±36.7 kPa).The experiments and density functional theory calculations also revealed the principle of long-range electronic effect to establish a new synthetic strategy of poly(disulfide)s with superior properties favorable for bioelectronics.

关键词： self-healing elastomers thioctic acid ionic liquid bioelectronics