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Analysis on the causes of massive stranding of Yellow Sea green tide on Lianyungang and Rizhao coasts in 2022

Journal of Oceanology and Limnology 2024年第3期42卷 816-830页

作者： Lingjuan WU Juan HUANG Yi DING guiyan liu Shuai HUANG Song GAO Chao YUAN Jiangling XU Ping WU Rui HUANG Ruobing WEN Jie MEI North China Sea Marine Forecasting and Hazard Mitigation Center Ministry of Natural ResourcesQingdao 266061China Shandong Key Laboratory of Marine Ecological Environment and Disaster Prevention and Mitigation Qingdao 266061China National Engineering Laboratory for Integrated Aero-Space-Ground-Ocean Big Data Application Technology Xi’an 710129China East China Sea Marine Forecasting and Hazard Mitigation Center Ministry of Natural ResourcesShanghai 200136China North China Sea Ecological Center Ministry of Natural ResourcesQingdao 266033China

In 2022,Yellow Sea green tide caused by Ulva prolifera reached a historic minimum and the coastal areas of Shandong Peninsula were less ***,the largest amount of seaweed biomass has been washed ashore on Lianyungang and Rizhao coasts since *** studied the development pattern of Yellow Sea green tide in 2022,and analyzed the key environmental factors on the growth and drifting,then discussed the possible reasons that resulted in the massive stranding of green tide biomass in Lianyungang and *** show under the combined influence of the east to southeast winds and currents with shoreward anomalies,green tide drifted to the coastal waters between Shandong and Jiangsu provinces and the distribution areas located westward compared with previous years(2008–2021).Floating *** rafts from the coastal waters of Binhai and Sheyang drifted continuously into the coastal waters of Lianyungang and Rizhao,providing important supplements for Yellow Sea green *** green tide in 2022 distributed close to the coastal waters,the abundant nutrients might support their continuous high growth *** addition,the amount of rainfall around Shandong Peninsula from late June to early July were significantly higher than in previous years,which might promote the development of green tide to some extent.

关键词： Yellow Sea green tide stranding biomass development pattern environmental factor

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壳寡糖交联明胶可生物降解薄膜的制备与性能研究

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食品工业科技 2024年第13期45卷 1-8页

作者：刘桂艳王贝杨若熙秦中立武汉华夏理工学院生物与制药工程学院湖北武汉430223 湖北科技学院电子与信息工程学院湖北咸宁437100

目的:研究壳寡糖改性对明胶基薄膜性能的影响。方法:以废猪皮中提取明胶为基质,以壳寡糖和聚乙烯醇为改性交联剂,制备得到了明胶基薄膜。利用红外光谱、X射线衍射、扫描电子显微镜、分光光度法、拉力试验测试法对其结构和力学性能进行... 详细信息

目的:研究壳寡糖改性对明胶基薄膜性能的影响。方法:以废猪皮中提取明胶为基质,以壳寡糖和聚乙烯醇为改性交联剂,制备得到了明胶基薄膜。利用红外光谱、X射线衍射、扫描电子显微镜、分光光度法、拉力试验测试法对其结构和力学性能进行了测定,并测试了明胶基薄膜在抗氧化、抗菌、水稳定性和生物降解方面的性能。结果:交联改性后明胶薄膜的力学性能得到显著提升,断裂应力最高可达37.09 MPa,最大撕裂能为56.71 kJ/m^(2),且浸泡于水中48 h仍能维持良好的物理形态,此外,薄膜还拥有优异透光性(最大可达92.32%),良好抗氧化性(自由基的清除率最高可达75.12%),优异抗菌性和生物降解性(完全降解时间<45 h)。结论:壳寡糖改性一定程度上改善了明胶基薄膜的力学性能和生物降解性能,赋予了薄膜良好抗菌性和抗氧化能力,表明其在食品包装上存在较大潜在应用价值。

关键词：明胶壳寡糖交联可生物降解薄膜性能

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探究非遗文化融入高校设计专业色彩课程路径

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色彩 2024年第1期 148-150页

作者：刘桂艳湖北商贸学院

随着全球化进程的加速和文化多样性的日益突出,保护和传承非物质文化遗产(Non-MaterialCultural Heritage,简称“非遗”)已成为当今社会中不可忽视的任务。非遗文化作为一种独特而宝贵的文化形态,具有丰富的历史内涵、独特的艺术风格和... 详细信息

随着全球化进程的加速和文化多样性的日益突出,保护和传承非物质文化遗产(Non-MaterialCultural Heritage,简称“非遗”)已成为当今社会中不可忽视的任务。非遗文化作为一种独特而宝贵的文化形态,具有丰富的历史内涵、独特的艺术风格和深厚的人文底蕴。然而,由于现代化进程的冲击和社会变革的影响,许多非遗技艺逐渐衰退或面临失传的危险。基于此,将非遗文化融入高校设计专业色彩课程中,可以帮助更多的高校学生了解非遗文化,传承非遗文化。

关键词：非遗文化高校设计色彩

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高效液相色谱及红外光谱法分析鸡血藤提取物中儿茶素类成分

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化学分析计量 2024年第3期33卷 29-36,46页

作者：杨若熙刘桂艳王贝诺丁汉大学医学与健康科学学院英国诺丁汉NG72RD 武汉华夏理工学院生物与制药工程学院武汉430223

建立高效液相色谱结合红外光谱法检测鸡血藤提取物中儿茶素类成分原儿茶酸、儿茶素、表儿茶素。利用Design-Expert13.0.6设计响应面试验,优化甲醇体积分数、液料比、超声时间、超声温度交互的提取条件,确定最高提取率。采用高效液相色谱... 详细信息

建立高效液相色谱结合红外光谱法检测鸡血藤提取物中儿茶素类成分原儿茶酸、儿茶素、表儿茶素。利用Design-Expert13.0.6设计响应面试验,优化甲醇体积分数、液料比、超声时间、超声温度交互的提取条件,确定最高提取率。采用高效液相色谱(HPLC)法与红外光谱法对鸡血藤提取物中儿茶素类成分进行定量和定性分析,确定儿茶素类成分含量和单体结构。样品经甲醇溶液超声提取,以0.2%(质量分数)H3PO4-乙腈作为流动相进行梯度洗脱,采用InertsilTM ODS-35μm色谱柱(150 mm×4.6 mm,5μm)进行分离,柱温为30℃,流量为1 mL/min,检测波长为260 nm,进样体积为10μL。红外光谱法采用KBr压片法测定成分含量。原儿茶酸、儿茶素、表儿茶素的质量浓度在100~1000μg/mL范围内与色谱峰面积线性关系良好,相关系数分别为0.9997、0.9992、0.9993。利用Design-Expert13.0.6确定超声波最优提取工艺为超声时间40 min,超声温度51℃,甲醇体积分数50%,液料比50∶1 mL/g,得到儿茶素类物质总质量分数为7.8837 mg/g。红外光谱法证明鸡血藤中具有儿茶素类物质的单体或聚合体成分,为鸡血藤中儿茶素类物质的开发和质量控制提供光谱学理论基础和依据。

关键词：鸡血藤原儿茶酸表儿茶素儿茶素高效液相色谱响应面法红外光谱法

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Long-term trend analysis of wave characteristics in the Bohai Sea based on interpolated ERA5 wave reanalysis from 1950 to 2020

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Acta Oceanologica Sinica 2022年第7期41卷 97-112页

作者： Jichao Wang Peidong Sun Zhihong Liao Fan Bi guiyan liu College of Science China University of PetroleumQingdao266580China National Meteorological Information Center Beijing100081China North China Sea Marine Forecasting Center of State Oceanic Administration Qingdao266061China Shandong Provincial Key Laboratory of Marine Ecological Environment and Disaster Prevention and Mitigation Qingdao266061China

Reasonably understanding of the long-term wave characteristics is very crucial for the ocean engineering.A feedforward neural network is operated for interpolating ERA5 wave reanalysis in this study,which embodies a detailed record from 1950 *** spatiotemporal variability of wave parameters in the Bohai Sea,especially the significant wave height(SWH),is presented in terms of combined wave,wind wave and swell by employing the 71 years(1950–2020)of interpolated ERA5 *** mean SWH decreases at−0.12 cm/a estimated by Theil-Sen estimator and 95th percentile SWH reflecting serve sea states decreases at−0.20 cm/***-seasonal analysis shows SWH of wind wave has steeper decreasing trend with higher slopes than that of swell,especially in summer and winter,showing the major decrease may attribute to the weakening of *** inner Bohai Sea reveals a general decreasing trend while the intersection connecting with the Yellow Sea has the lower significance derived by Mann-Kendall ***,95th percentile SWH decreases at a higher rate while with a lower significance in comparison with the mean *** frequencies of mean wave directions in sub-sector are statistically calculated to find the seasonal prevailing ***,the dominant directions in summer and winter are south and north.A similar variation concerning to SWH,the trend of the mean wave period is provided,which also shows a decrease for decades.

关键词： wave characteristic wind wave swell long-term trend Bohai Sea

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Construction of a Three-dimensional Covalent Organic Framework via the Linker Exchange Strategy

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Chemical Research in Chinese Universities 2022年第2期38卷 402-408页

作者： CUI Yumeng MIAO Zhuang liu Qi JIN Fenchun ZHAI Yufeng ZHANG Lingyan WANG Wenli WANG Ke liu guiyan ZENG Yongfei Tianjin Key Laboratory of Structure and Performance for Functional Molecules College of ChemistryTianjin Normal UniversityTianjin 300387P.R.China

Covalent organic framework(COF)is a porous crystalline material with a well-controlled structure and a wide range of potential ***,the construction of new COF faces huge challenges,including the design and synthesis of structural unit monomers,the choice of reaction solvent system,and the study of reaction time and ***,it’s particularly important to widen the application scope of synthetic methods and further promote the development of ***,we performed structural transformations in a three-dimensional(3D)COF(COF-300),and Fourier transform infrared spectroscopy(FTIR),power X-ray diffraction analysis(PXRD)and nitrogen adsorption isotherms confirmed the chemical principles and the successful realization of these *** the same time,we found that the interpenetrating structure in 3D COF can be changed through the conversion of *** structure simulation successfully proved the transformation of COF from five-fold to seven-fold *** addition,in order to prove the versatility of this strategy,we used the same method to convert COF-300 into a high crystallinity 3D COF(TJNU-COF-302)that is also seven-fold interpenetrating and has not been *** simple strategy not only makes it easy to obtain a 3D COF connected with imines,which greatly promotes the development of COF,but also provides a new way to develop 3D COFs with complex interpenetrating structures.

关键词： Covalent organic framework(COF) Linker exchange Transformation strategy Porosity

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海上溢油应急处置决策支持系统的研发与实现

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防灾科技学院学报 2024年第1期26卷 47-55页

作者：陈星徐江玲高松刘桂艳李轶斐中海油研究总院有限责任公司北京100124 国家海洋局北海预报中心山东青岛266100

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基于元模型和多视图建模思想,制定了规范化场景构建体系,通过微服务的形式搭建SOA混合架构,研发了海上溢油应急处置决策支持系统。该系统以大数据平台、模型库、知识库、方法库、场景库为基础,实现了对海上溢油事件应急处置资源的集成和融合应用,提供溢油事故的接警、监测预警、应急指挥、智能方案生成和辅助决策功能,管理者可在该系统平台上对溢油事故进行快速应急处置及决策分析。解决了目前海上溢油应急处置过程中信息集成度低、决策手段主观、科学态势分析不足和处置系统效率不高的问题,能够提升我国应对海上突发事件的能力。

关键词：溢油决策支持 SOA架构应急处置

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A Highly Active Pd（Ⅱ） Complex with 1-Tritylimidazole Ligand for Suzuki-Miyaura and Heck Coupling Reactions

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Chinese Journal of Chemistry 2016年第10期34卷 1048-1052页

作者： Chengxin liu guiyan liu Hongkun Zhao Tianjin Key Laboratory of Structure and Performance for Functional Molecules Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry(Tianjin Normal University) Ministry of Education College of Chemistry Tianjin Normal UniversityTianjin 300387China

A [Pd（1-tritylimidazole）2Cl2] complex was synthesized and characterized by IH and 13C NMR spectroscopy, elemental analysis, and X-ray crystallography. The X-ray analysis confirmed that the Pd（II） has a four-coordinated square planar structure. The palladium complex was used to carry out Suzuki-Miyaura coupling reactions of aryl chlorides with a variety of phenylboronic acids in i-PrOH-H20 （1 ： 1, V ： V） at room temperature and Heck coupling reactions of aryl halides with methyl acrylate in DMF at 110℃. High yields of the cross-coupling products were obtained.

关键词： palladium 1-tritylimidazole Suzuki-Miyaura coupling reaction Heck coupling reaction

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Synthesis of （Ph3P）2PdX2 Complexes and Their Catalytic Activity for Heck Reaction Involving Aryl Halide and Acrylate

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Chemical Research in Chinese Universities 2017年第6期33卷 860-863页

作者： liu Chengxin HAN Fangwai liu guiyan ZHAO Hongkun Tianjin Key Laboratory of Structure and Performance for Functional Molecules Key Laboratory of Inorganic-organic Hybrid Functional Material Chemistry(Tianfin Normal University) Ministry of Education College of Chemistry Tianjin Normal University Tianjin 300387 P. R. China

Two palladium complexes, （Ph3P）2PdBr2 and （PhsP）2PdI2, were synthesized by a new method and their structures were confirmed by NMR, elemental analysis and X-ray crystallography. The catalytic activity of the two palladium complexes was evaluated in Mizoroki-Heck cross-coupling reaction of aryl halide with acrylate, and the results show that they all have high catalytic activity to many different substrates.

关键词： Palladium catalyst Triphenylphosphine ligand Mizoroki-Heck reaction

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Synthesis and Catalytic Activity of a Grubbs-Hoveyda Pre-catalyst Having a Trimeric Resting State

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中国化学:英文版 2015年第4期33卷 441-445页

作者： guiyan liu Bin Wu Jianhui Wang Tianjin Key Laboratory of Structure and Performance for Functional Molecules Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry(Tianjin Normal University)Ministry of EducationCollege of ChemistryTianjin Normal UniversityTianjin 300387China Department of Chemistry College of ScienceTianjin UniversityTianjin 300072China

A Grubbs-Hoveyda pre-catalyst having a trimeric resting state based on 2,4,6-trichloro-1,3,5-triazine was syn-thesized and the complex was characterized by NMR,HRMS and elemental *** activity of this complex for ring-closing metathesis(RCM)was *** catalytic system possesses high catalytic activity for many different olefin substrates.

关键词： olefin metathesis ruthenium carbene catalyst

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