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Qualitative analysis of aromatic compounds via 1D TOCSY techniques

Magnetic Resonance Letters 2024年第1期4卷 21-27页

作者： Wenbo Dong Qi zhao jiancheng zhao Jiarong Zhang Yingxiong Wang Yan Qiao State Key Laboratory of Coal Conversion Institute of Coal ChemistryChinese Academy of Sciences27 South Taoyuan RoadTaiyuan030001China Graduate University of Chinese Academy of Sciences Beijing100049China Marine Biomedical Research Institution Guangdong Medical UniversityZhanjiang524023China College of Chemistry Taiyuan University of Technology79 Yingze West StreetWanbailin DistrictTaiyuan030024China

The aromatic compounds,including o-xylene,m-xylene,p-xylene,and ethylbenzene,primarily originate from the catalytic reforming of crude oil,and have a wide variety of ap***,because of similar physical and chemical properties,these compounds are difficult to be identified by gas chromatography(GC)without standard *** the development of modern nuclear magnetic resonance(NMR)techniques,NMR has emerged as a powerful and efficient tool for the rapid analysis of complex and crude mixtures without *** this study,the parameters of one-dimensional(1D)total correlation spectroscopy(TOCSY)NMR techniques,including 1D selective gradient TOCSY and 1D chemicalshift-selective filtration(CSSF)with TOCSY,were optimized to obtain comprehensive molecular structure *** results indicate that the overlapped signals in NMR spectra of nonpolar aromatic compounds(including o-xylene,m-xylene,p-xylene and ethylbenzene),polar aromatic compounds(benzyl alcohol,benzaldehyde,benzoic acid),and aromatic compounds with additional conjugated bonds(styrene)can be resolved in 1D *** importantly,full molecular structures can be clearly distinguished by setting appropriate mixing time in 1D *** approach simplifies the NMR spectra,provides structural information of entire molecules,and can be applied for the analysis of other structural isomers.

关键词： 1D TOCSY NMR technologies Xylenes Aromatic compounds Structure information of entire molecular Qualitative analysis

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An efficient and mild recycling of waste melamine formaldehyde foams by alkaline hydrolysis

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Green Energy & Environment 2024年第5期9卷 919-926页

作者： Shaodi Wu Ning Zhang Chizhou Wang Xianglin Hou Jie zhao Shiyu Jia jiancheng zhao Xiaojing Cui Haibo Jin Tiansheng Deng Shanxi Engineering Research Center of Biorefinery Institute of Coal ChemistryChinese Academy of Sciences27 South Taoyuan RoadTaiyuan030001China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing100049China Department of Chemistry and Chemical Engineering Taiyuan Institute of TechnologyTaiyuanShanxi030008China Beijing Key Laboratory of Fuels Cleaning and Advanced Catalytic Emission Reduction Technology/College of New Materials and Chemical Engineering Beijing Institute of Petrochemical TechnologyBeijing102617China

Melamine formaldehyde foam(MFF)generates many poisonous chemicals through the traditional recycling methods for organic resin ***,a high MFF degradation ratio of ca.97 wt.%was achieved under the mild conditions(160℃)in a NaOH–H2O system with ammelide and ammeline as the main degradation *** alkaline solvent had an obvious corrosion effect for MFF,as indicated by scanning electron microscopy(SEM).The reaction process and products distribution were studied by Fourier-transform infrared spectroscopy(FTIR),X-ray photoelectron spectroscopy(XPS),and ^(13)C nuclear magnetic resonance(NMR).Besides,the MFF degradation products that have the similar chemical structures and bonding performances to those of melamine can be directly used as the raw material for synthesis of melamine urea-formaldehyde resins(MUFs).Moreover,the degradation system demonstrated here showed the high degradation efﬁciency after reusing for 7 *** degradation process generated few harmful pollutants and no pre-or post-treatments were required,which proves its feasibility in the safe removal or recovery of waste MFF.

关键词： Melamine formaldehyde foam Degradation Alkaline hydrolysis Recycling

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博格达山北缘构造特征解析

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山东石油化工学院学报 2024年第2期38卷 12-17页

作者：赵建成中国石化胜利油田分公司勘探开发研究院山东东营257015

博格达造山带夹持于吐哈和准噶尔盆地之间,经历多期隆升、剥蚀、沉降,遭受多次构造运动叠加,形成复杂的构造特征,其山前构造特征横向变化对油气分布有重要意义。利用准东最新二维地震解释成果,结合区域地质资料,对博格达山北缘准噶尔盆... 详细信息

博格达造山带夹持于吐哈和准噶尔盆地之间,经历多期隆升、剥蚀、沉降,遭受多次构造运动叠加,形成复杂的构造特征,其山前构造特征横向变化对油气分布有重要意义。利用准东最新二维地震解释成果,结合区域地质资料,对博格达山北缘准噶尔盆地山前带的构造特征进行描述分析,指出沿博格达山从东向西,构造样式上存在由基底卷入的高角度冲断到铲式滑脱冲断再到基底卷入的低角度叠瓦冲断(并发育断裂相关褶皱)的变化,分析认为产生这种变化的控制机制主要为早期山前凸起控制和软弱滑脱层控制。

关键词：博格达山北缘构造特征凸起滑脱层

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楝树新品种‘紫金楝’

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园艺学报 2024年第S1期51卷 219-220页

作者：白霄霞蒋淑磊李萍石硕张骁骁赵建成李志斌石家庄市农林科学研究院石家庄市花卉技术创新中心石家庄050041 石家庄市神州花卉研究所有限公司石家庄050021 河北师范大学生命科学学院石家庄050024

楝树新品种‘紫金楝’由楝树实生苗中的变异单株选育而来。落叶乔木,树冠卵球形,树皮黄褐色,并有砖红色深纵纹。多回羽状复叶,顶生小叶披针形,叶缘近全缘。花期4—5月,花瓣淡紫色,雄蕊筒紫蓝色,有清香气味。果实椭圆形至圆形,成熟果实... 详细信息

楝树新品种‘紫金楝’由楝树实生苗中的变异单株选育而来。落叶乔木,树冠卵球形,树皮黄褐色,并有砖红色深纵纹。多回羽状复叶,顶生小叶披针形,叶缘近全缘。花期4—5月,花瓣淡紫色,雄蕊筒紫蓝色,有清香气味。果实椭圆形至圆形,成熟果实黄色有光泽,冬季果实可宿存枝头至次年花开。抗病抗虫。适宜北京以南楝树适生区栽培。

关键词：楝树品种

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引航员便携终端信号常见问题与对策

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航海技术 2024年第4期 48-51页

作者：薛剑恩赵建成马金根上海港引航站

为解决船舶引航工作中引航员便携终端无法正常获取船舶自动识别系统(AIS)信号的问题,通过对AIS信号传输流程涉及的关键技术进行论述,结合实际工作分析引航员接口和引航员便携终端信号适配器常见的问题,并给出行之有效的解决方法。

关键词：引航引航员便携终端自动识别系统(AIS)信号适配器

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蚕沙有机肥对雷竹林土壤理化性质和酶活性的影响

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东北林业大学学报 2024年第9期52卷 109-114页

作者：倪惠菁赵建诚杨振亚石坚陈奕洁吴燕芬邱国强浙江省林业科学研究院杭州310023 德清县生态林业综合服务中心

为了解蚕沙有机肥对雷竹林土壤的改良效果,以浙江省德清县舞阳街道城山村雷竹林土壤为研究对象,雷竹林土壤单施化肥作为对照(CK),蚕沙有机肥施肥量分别为7500 kg·hm^(-2)(T1处理)、15000 kg·hm^(-2)(T2处理)、22500 kg·hm^(-2)(T3处... 详细信息

为了解蚕沙有机肥对雷竹林土壤的改良效果,以浙江省德清县舞阳街道城山村雷竹林土壤为研究对象,雷竹林土壤单施化肥作为对照(CK),蚕沙有机肥施肥量分别为7500 kg·hm^(-2)(T1处理)、15000 kg·hm^(-2)(T2处理)、22500 kg·hm^(-2)(T3处理),比较不同蚕沙有机肥施肥量的雷竹林土壤理化性质和酶活性的差异。结果表明:蚕沙有机肥对土壤理化性质和酶活性有显著影响(P<0.05)。与对照(CK)相比,施用蚕沙有机肥(T1、T2、T3处理)显著提高了土壤有机碳和碱解氮质量分数(P<0.05),且随着蚕沙有机肥施肥量的增加而增加;表层(0~20 cm)土壤硝态氮和有效磷质量分数显著提高(P<0.05),与碳氮磷转化相关的土壤酶活性显著提高(P<0.05)。土壤总孔隙度、土壤通气度、总有机碳、全氮、全磷、碱解氮、硝态氮是影响土壤综合质量的重要指标,施用蚕沙有机肥提高了雷竹林土壤综合质量。因此蚕沙有机肥可以改善土壤理化性质,提高土壤养分有效性和酶活性。

关键词：蚕沙有机肥雷竹土壤理化性质酶活性

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Ultraconformable Integrated Wireless Charging Micro-Supercapacitor Skin

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Nano-Micro Letters 2024年第7期16卷 46-58页

作者： Chang Gao Qing You jiancheng Huang Jingye Sun Xuan Yao Mingqiang Zhu Yang zhao Tao Deng School of Electronic and Information Engineering Beijing Jiaotong UniversityBeijing 100044People’s Republic of China School of Microelectronics Tianjin UniversityTianjin 300072People’s Republic of China Key Laboratory of Cluster Science Ministry of Education of China Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion MaterialsSchool of Chemistry and Chemical EngineeringBeijing Institute of TechnologyBeijing 100081People’s Republic of China

Conformable and wire-less charging energy storage devices play important roles in enabling the fast development of wearable,non-contact soft ***,current wire-less charging power sources are still restricted by limited flexural angles and fragile connection of components,resulting in the failure expression of performance and constraining their fur-ther applications in health monitoring wearables and moveable artificial ***,we present an ultracompatible skin-like integrated wireless charging micro-supercapacitor,which building blocks(including electrolyte,electrode and substrate)are all evaporated by liquid *** to the infiltration and permeation of the liquid,each part of the integrated device attached firmly with each other,forming a compact and all-in-one *** addition,benefitting from the controllable volume of electrode solution precursor,the electrode thickness is easily regulated varying from 11.7 to 112.5μ*** prepared thin IWC-MSC skin can fit well with curving human body,and could be wireless charged to store electricity into high capacitive micro-supercapacitors(11.39 F cm-3)of the integrated *** believe this work will shed light on the construction of skin-attachable electronics and irregular sensing microrobots.

关键词： Micro-supercapacitor Electronic skin Supercapacitor skin Wireless charging energy storage device

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Study on the Bryoflora in Yunmeng Mountain,south Hebei Province,China

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Frontiers in Biology 2006年第2期1卷 158-162页

作者： Tang Weibin zhao jiancheng Department of Biology Xingtai UniversityXingtai 054001China College of Life Sciences Hebei Normal UniversityShijiazhuang 050016China

Mountain Yunmeng(37°20′N,113°54′E)is 1520m above sea level and part of the Taihang *** a temperate continental monsoon climate,the mountain area belongs to the warm temperate deciduous broad-leaved forest *** thesis was mostly based on the study of more than 2000 packages of bryophytes which were mainly collected by the authors in ***,Hebei *** these specimens,there are 36 families,99 genera,and 244 species(including 17 varieties,5 formes,and 1 subspecies)which have been studied and ***,it could be seen that *** has a diverse population of *** bryoflora could be divided into 10 geographical elements:north temperate element make up the majority,accounting for 52.11%of the entire known bryoflora,and another belongs to the East Asian element,accounting for 19.25%.All temperate elements,not including 14 endemic to China and 31 Cosmopolitans,were added up to 188 species,which took 88.3%of all the entire known bryoflora in ***,there were only 11 Subtropical and Tropical *** all appearances,the bryoflora of *** showed obvious temperate *** authors conclude that the bryoflora in *** belongs to the middle type,between the warm and dry northern mountain area and the warm and damp southern mountain *** microclimatic environment greatly influences the bryoflora.

关键词： bryophytes bryoflora Mountoain Yunmeng south Hebei Province

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Chlorophytes of biological soil crusts in Gurbantunggut Desert,Xinjiang Autonomous Region,China

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Frontiers in Biology 2008年第1期3卷 40-44页

作者： jiancheng zhao Bingchang ZHANG Yuanming ZHANG College of Life Science Hebei Normal UniversityShijiazhuang 050016China Xinjiang Institute of Ecology and Geography Chinese Academy of SciencesUrumuqi 830011China Graduate University of Chinese Academy of Sciences Beijing 100049China

In this paper,chlorophytes collected from 253 biological soil crust samples in Gurbantunggut Desert in Xinjiang Autonomous Region,China were studied by field investigation and microscopical observation in *** flora composition,ecological distribution of chlorophytes in the desert and dynamic changes of species composition of chlorophytes in different developing stages of biological soil crusts are preliminarily *** showed that there were 26 species belonging to 14 genera and 10 families,in which unicellular chlorophytes were *** existed some differences in distribution of varied sand dune *** taxa of chlorophytes in leeward of sand dunes are most abundant,but the taxa in windward,interdune and the top of sand dunes reduced *** were mainly distributed within the crust and the taxa of chlorophytes decrease obviously under the *** the devel-oping stages of the biological soil crust,species diversity of chlorophytes changed a little,but species composition pre-sented some *** humicola,Chlorella vulgaris,Chlamydomonas ovalis and Chlamydomonas *** existed in all developing stages of biological *** several former stages of the biological soil crust there were spherical chlorophytes and filamentous *** moss crust formed,filamentous chlorophytes disappeared,such as Microspora and Ulothrix.

关键词： Gurbantunggut Desert Xinjiang biological soil crust chlorophytes

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李善《文选注》征引《论语》汉魏古注考述——兼论其学术史意义

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南开学报（哲学社会科学版） 2022年第1期 124-133页

作者：赵建成南开大学文学院天津300071

李善《文选注》征引《论语》汉魏古注8家(孔安国、包咸、马融、郑玄、陈群、王肃、周生烈、何晏)。立足于《文选》与《论语》文本及相关文献,经过细致的考证,可以考定李善对这些文献的征引并非皆出于原书,除郑玄注(或其部分内容)外,其余... 详细信息

李善《文选注》征引《论语》汉魏古注8家(孔安国、包咸、马融、郑玄、陈群、王肃、周生烈、何晏)。立足于《文选》与《论语》文本及相关文献,经过细致的考证,可以考定李善对这些文献的征引并非皆出于原书,除郑玄注(或其部分内容)外,其余7家注释皆来自何晏《论语集解》,故其实际引书仅为单注本郑玄《论语注》与何晏《论语集解》二种。这一考察对李善《文选注》引书来源问题的判断具有重要的启示意义。同时,从南北朝迄隋以至唐初,《论语》注疏类著作众多,但占据主流地位的只有郑、何二家,李善注对这两部著作的征引与当时的学术形势完全一致。这也可以从与李善同时或其前后学者之著作征引《论语》注释的情况中得到印证。

关键词：李善《文选注》《论语》汉魏古注引书来源学术史价值

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