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Effect of various aromatic compounds with different functional groups on enzymatic hydrolysis of microcrystalline cellulose and alkaline pretreated wheat straw

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Journal of Bioresources and Bioproducts 2024年第2期9卷 211-221页

作者： Yufeng Yuan xinyu guo Bo Jiang Wenjuan Wu Tingwei Zhang Michael Sweeney Mehraj Ahmad Yongcan Jin Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources International Innovation Center for Forest Chemicals and MaterialsJiangsu Provincial Key Lab of Pulp and Paper Science and TechnologyNanjing Forestry UniversityNanjing 210037China School of Chemistry and Chemical Engineering Queen’s University BelfastBelfast BT71NNNorthern Ireland United Kingdom Department of Food Science and Engineering College of Light Industry and Food EngineeringNanjing Forestry UniversityNanjing 210037China

Low molecular aromatic compounds are detrimental to the enzymatic hydrolysis of lignocellu-lose.However,the specific role of their functional groups remains unclear.Here,a series of nine aromatic compounds as additives were tested to understand their effect on the hydrolysis yield of microcrystalline cellulose(MCC)and alkaline pretreated wheat straw.Based on the results,the inhibition of aldehyde groups on MCC was greater than that of carboxyl groups,whereas for the alkaline pretreated wheat straw case,the inhibitory effect of aldehyde groups was lower than that of carboxyl groups.Increased methoxyl groups of aromatic compounds reduced the inhibitory ef-fect on enzymatic hydrolysis of both substrates.Stronger inhibition of aromatic compounds on MCC hydrolysis was detected in comparison with the alkaline pretreated wheat straw,indicating that the substrate lignin can offset the inhibition to a certain extent.Among all aromatic com-pounds,syringaldehyde with one aldehyde group and two methoxyl groups improved the glucan conversion of the alkaline pretreated wheat straw.

关键词： Aromatic compound Functional group Enzymatic hydrolysis Alkaline pretreated wheat straw Microcrystalline cellulose

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Effects of dissolved oxygen and nutrients from the Kuroshio on hypoxia off the Changjiang River estuary

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Journal of Oceanology and Limnology 2022年第2期40卷 515-529页

作者： Di TIAN Feng ZHOU Wenyan ZHANG Han ZHANG Xiao MA xinyu guo State Key Laboratory of Satellite Ocean Environment Dynamics Second Institute of OceanographyMinistry of Natural ResourcesHangzhou 310012China Observation and Research Station of Yangtze River Delta Marine Ecosystems Ministry of Natural ResourcesZhoushan 316022China Ocean College Zhejiang UniversityZhoushan 316021China Institute of Coastal Research Helmholtz-Zentrum GeesthachtGeesthacht 21502Germany Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai) Zhuhai 519082China Center for Marine Environmental Study Ehime UniversityMatsuyama 790-8577Japan

The intrusion of the Kuroshio into the East China Sea(ECS)aff ects the development of hypoxia off the Changjiang(Yangtze)River estuary;however,quantitative analysis of its impacts is lacking.In this study,the Regional Ocean Modeling Systems(ROMS)model coupled with the Carbon,Silicate and Nitrogen Ecosystem(CoSiNE)model was used to investigate the relative importance of dissolved oxygen(DO)and diff erent nutrients(silicate,nitrate,and phosphate)in the Kuroshio on hypoxia in the ECS.Results show that changes in DO concentrations in the Kuroshio modify the distribution and intensity of hypoxia through direct onshore transport by hydrodynamic processes.An increase in Kuroshio DO concentration by 25%or 50%would result in a decrease of the maximum hypoxia extent(MHE)in the ECS by 76%or 86%,respectively,while a 25%decrease in Kuroshio DO would increase the MHE by up to 219%.The contribution of DO in the Taiwan Strait is almost negligible.In contrast to Kuroshio DO,nutrients aff ect hypoxia in the ECS through onshore transport by hydrodynamic and biochemical processes.Changes in phosphate and nitrate concentrations by 25%in the Kuroshio would change the MHE by up to 30%and 18%,respectively,accompanied by apparent changes in surface chlorophyll-a concentrations.The eff ect of silicate on hypoxia is negligible because a 25%change in silicate concentrations in the Kuroshio would result in less than 1%change in the MHE.Our results reveal a hierarchical rank of importance for environmental variables in the Kuroshio(i.e.,DO>phosphate>nitrate>silicate)in modifying the development of hypoxia in the ECS.

关键词： hypoxia Kuroshio Changjiang River estuary East China Sea dissolved oxygen nutrient

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Elevated carbon dioxide stimulates nitrous oxide emission in agricultural soils: A global meta-analysis

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Pedosphere 2022年第1期32卷 3-14页

作者： Yilin DU xinyu guo Jinxing LI Yuankun LIU Jipeng LUO Yongchao LIANG Tingqiang LI Ministry of Education Key Laboratory of Environmental Remediation and Ecological Health College of Environmental and Resource SciencesZhejiang UniversityHangzhou 310058China Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment Hangzhou 310058China National Demonstration Center for Experimental Environment and Resources Education Zhejiang UniversityHangzhou 310058China

Elevated carbon dioxide (CO_(2))(e CO_(2)) has been shown to affect the nitrous oxide (N_(2)O) emission from terrestrial ecosystems by altering the interaction of plants,soils,and microorganisms.However,the impact of e CO_(2) on the N_(2)O emission from agricultural soils remains poorly understood.This meta-analysis summarizes the effect of e CO_(2) on N_(2)O emission in agricultural ecosystems and soil physiochemical and biological characteristics using 50 publications selected.The e CO_(2) effect values,which equal to the percentage changes of N_(2)O emission under e CO_(2),were calculated based on the natural logarithm of the response ratio to e CO_(2).We found that e CO_(2) significantly increased N_(2)O emission (by 44%),which varied depending on experimental conditions,agricultural practices,and soil properties.In addition,e CO_(2) significantly increased soil water-filled pore space (by 6%),dissolved organic carbon content (by11%),and nitrate nitrogen content (by 13%),but significantly reduced soil p H (by 1%).Moreover,e CO_(2) significantly increased soil microbial biomass carbon(by 28%) and soil microbial biomass nitrogen (by 7%) contents.Additionally,e CO_(2) significantly increased the abundances of ammonia-oxidizing bacteria(AOB) amo A (by 21%),nir K (by 15%),and nir S (by 15%),but did not affect the abundances of ammonia-oxidizing archaea (AOA) amo A and nos Z.Our findings indicate that e CO_(2) substantially stimulates N_(2)O emission in agroecosystems and highlight that optimization of nitrogen management and agronomic options might suppress this stimulation and aid in reducing greenhouse effect.

关键词： agricultural practices agroecosystems climate change experimental conditions greenhouse gas soil properties

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Research advance in phenotype detection robots for agriculture and forestry

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International Journal of Agricultural and Biological Engineering 2023年第1期16卷 14-25页

作者： Yuanqiao Wang Jiangchuan Fan Shuan Yu Shuangze Cai xinyu guo Chunjiang Zhao Beijing Key Laboratory of Digital Plant Beijing Research Center for Information Technology in AgricultureChina National Engineering Research Center for Information Technology in Agriculture(NERCITA)Beijing 100097China College of Information Engineering Northwest A&F UniversityYangling 712100ShaanxiChina Beijing PAIDE Science and Technology Development Co. Ltd.Beijing 100097China

The continuous development of robot technology has made phenotype detection robots a key for extracting and analyzing phenotyping data in agriculture and forestry.The different applications of agricultural robots and phenotype detection robots were discussed in this article.Further,the structural characteristics and information interaction modes of the current phenotype detection robots were summarized from the viewpoint of agriculture and forestry.The publications with keywords related to clustering distribution were analyzed and the currently available phenotype robots were classified.Additionally,a conclusion on the design criteria and evaluation system of plant phenotype detection robots was summarized and obtained,and the challenges and future development direction were proposed,which can provide a reference for the design and applications of agriculture and forestry robots.

关键词： computer vision plant phenotype detection robot phenotyping analysis sensor evaluation system device clustering

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基于AGV机器人的智能物流系统在医用耗材管理中的应用

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中国医疗器械杂志 2024年第1期48卷 108-110页

作者：郭新宇首都医科大学附属北京积水潭医院北京市100035

目的医用耗材价格昂贵,规格众多,使用量大,传统人工管理模式存在一定弊端。通过建设基于AGV机器人的智能物流系统,提高管理水平。方法AGV机器人在一级库房实现出库、入库、盘点等功能,将原有的“人到货”模式转变为“货到人”模式。结... 详细信息

目的医用耗材价格昂贵,规格众多,使用量大,传统人工管理模式存在一定弊端。通过建设基于AGV机器人的智能物流系统,提高管理水平。方法AGV机器人在一级库房实现出库、入库、盘点等功能,将原有的“人到货”模式转变为“货到人”模式。结果基于AGV机器人的智能物流系统节省人力,节约成本,减轻人员劳动强度,提高库房的利用率,提升工作效率。结论医院是智能物流发展的新领域,基于AGV机器人的智能物流系统在医院取得了良好的应用效果,可提升医院智慧化管理水平。

关键词： AGV机器人智能物流人工智能耗材管理

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A deep learning-integrated phenotyping pipeline for vascular bundle phenotypes and its application in evaluating sap flow in the maize stem

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The Crop Journal 2022年第5期10卷 1424-1434页

作者： Jianjun Du Ying Zhang Xianju Lu Minggang Zhang Jinglu Wang Shengjin Liao xinyu guo Chunjiang Zhao Beijing Key Lab of Digital Plant Research Center of Information TechnologyBeijing Academy of Agriculture and Forestry SciencesBeijing 100097China

Plant vascular bundles are responsible for water and material transportation, and their quantitative and functional evaluation is desirable in plant research. At the single-plant level, the number, size, and distribution of vascular bundles vary widely, posing a challenge to automatically and accurately identifying and quantifying them. In this study, a deep learning-integrated phenotyping pipeline was developed to robustly and accurately detect vascular bundles in Computed Tomography(CT) images of stem internodes. Two semantic indicators were used to evaluate and identify a suitable feature extraction network for semantic segmentation models. The epidermis thickness of maize stem was evaluated for the first time and adjacent vascular bundles were improved using an adaptive watershed-based approach. The counting accuracy(R^(2)) of vascular bundles was 0.997 for all types of stem internodes, and the measured accuracy of size traits was over 0.98. Combining sap flow experiments, multiscale traits of vascular bundles were evaluated at the single-plant level, which provided an insight into the water use efficiency of the maize plant.

关键词： Deep learning Maize stem Phenotyping Semantic segmentation Vascular bundle

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Water-Based Environmentally Friendly Pesticide Formulations Based on Cyclodextrin/Pesticide Loading System

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Journal of Renewable Materials 2023年第2期11卷 777-789页

作者： xinyu guo Zhe Sun Rui Zhao Hongyi Shang Jiangyu Liu Yong Xu Laihua Liu Xuemin Wu Key Lab of Plant-Soil Interaction MOECenter for ResourcesEnvironment and Food SecurityCollege of Resources and Environmental SciencesChina Agricultural UniversityBeijing100193China Innovation Center of Pesticide Research Department of Applied ChemistryCollege of ScienceChina Agricultural UniversityBeijing100193China

Difenoconazole(DIF)is a representative variety of broad-spectrum triazole fungicides and liposoluble pesticides.However,the water solubility of DIF is so poor that its application is limited in plant protection.In addition,the conventional formulations of DIF always contain abundant organic solvents,which may cause pollution of the environment.In this study,two DIF/cyclodextrins(CDs)inclusion complexes(ICs)were successfully prepared,which were DIF/β-CD IC and DIF/hydroxypropyl-β-CD IC(DIF/HP-β-CD IC).The effect of cyclodextrins on the water solubility and the antifungal effect of liposoluble DIF pesticide were investigated.According to the phase solubility test,the molar ratio and apparent stability constant of ICs were obtained.Fourier transform infrared spectroscopy,thermal gravity analysis,X-ray diffraction and scanning electron microscopy were used systematically to characterize the formation and characteristics of ICs.The results noted that DIF successfully entered the cavities of two CDs.In addition,the antifungal effect test proved the better performance of DIF/HP-β-CD IC,which exceeded that of DIF emulsifiable concentrate.Therefore,our study provides informative direction for the intelligent use of liposoluble pesticides with cyclodextrins to develop water-based environmentally friendly formulations.

关键词： Water-based environmentally friendly pesticide formulations difenoconazole β-cyclodextrin hydroxypropyl-β-cyclodextrin inclusion complex preparation characterization

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基于大数据的血液供应链管理研究综述及展望

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系统管理学报 2024年第2期33卷 279-296页

作者：郭心雨陈旭中北大学经济与管理学院太原030051 电子科技大学经济与管理学院成都611731

血液供应链相关综述论文多聚焦于研究问题、方法、趋势和挑战等方面,缺少从数据应用角度探讨血液供应链管理的综述性研究。利用文献计量方法回顾了116篇学术论文,可视化地展示了基于大数据的血液供应链管理相关研究合作和热点。在此基础... 详细信息

血液供应链相关综述论文多聚焦于研究问题、方法、趋势和挑战等方面,缺少从数据应用角度探讨血液供应链管理的综述性研究。利用文献计量方法回顾了116篇学术论文,可视化地展示了基于大数据的血液供应链管理相关研究合作和热点。在此基础上,从大数据视角探讨血液采集管理、血液库存与分配管理以及血液供应链网络设计3个方面的研究热点。最后,提出基于大数据的血液供应链管理PAGE框架阐述未来研究方向。研究成果有助于学界更准确地追踪和聚焦血液供应链管理中大数据的应用研究前沿和主题,为业界利用大数据管理血液供应链提供重要指导方向。

关键词：医疗与健康管理大数据血液供应链研究综述知识图谱

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The lectin gene TRpL1 of tetraploid Robinia pseudoacacia L.response to salt stress

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Journal of Forestry Research 2023年第2期34卷 497-505页

作者： Shuo Liu Yaxuan Jiang xinyu guo Liping Xu Pei Lei Qiuxiang Luo Jianxin Liu Wei Li Lei Tao Fanjuan Meng College of Life Science Northeast Forestry UniversityHarbin 150040People’s Republic of China State Key Laboratory of Tree Genetics and Breeding Northeast Forestry UniversityHarbin 150040People’s Republic of China Harbin Engineering University Harbin 150001People’s Republic of China Crop Tillage and Cultivation Institute Heilongjiang Academy of Agricultural ScienceHarbin 150028People’s Republic of China

Lectins are natural proteins in animals,plants,and microorganisms and can be divided into 12 families.These lectins play important roles in various environmental stresses.Some polyploid plants show tolerance to environmental stresses and to insect pests.However,the mechanism of stress tolerance is unclear.Tetraploid Robinia pseudoacacia(4×)under salt stress showed higher tolerance than diploid R.pseudoacacia(2×).As lectin can improve stress tolerance,it was questioned whether the stress resistance of polyploid plants was related to the lectin protein.In this study,salt resistance of lectin gene TRpL1 was verified by its over-expression in plants.In addition,salt resistance of lectin protein by E.coli strains was detected.The data revealed that the over-expression transgenic plants of TRpL1 showed better salt tolerance than control plants under salt stress,and the TRpL1-expressing strain also grew better in the medium with added NaCl.Therefore,tetraploid plants can resist salt stress through TRpL1 protein regulation.

关键词： Tetraploid Robinia pseudoacacia lectin Salt stress Polyploid

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结合数字孪生的斜拉桥系统更新和响应预测

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振动．测试与诊断 2024年第1期44卷 11-17,193页

作者：方圣恩郭新宇福州大学土木工程学院福州350108 福州大学土木工程防震减灾信息化国家地方联合工程研究中心福州350108

由于传统建模方法难以反馈桥梁系统参数和响应的细微变化,为此提出了以数字孪生体作为结构系统的高保真映射模型。首先,定义数字孪生体包含物理孪生层、数字孪生层和信息交互媒介3部分,数字孪生层的孪生模型是对斜拉桥物理实体的虚拟映... 详细信息

由于传统建模方法难以反馈桥梁系统参数和响应的细微变化,为此提出了以数字孪生体作为结构系统的高保真映射模型。首先,定义数字孪生体包含物理孪生层、数字孪生层和信息交互媒介3部分,数字孪生层的孪生模型是对斜拉桥物理实体的虚拟映射,通过信息交互媒介实现不同层间信息的实时传递;其次,针对具体应用提出了结构信息化、信息数据化和数据模型化3条建模准则,实现对斜拉桥物理实体的信息勾勒和可视化过程,建立高保真的斜拉桥数字孪生模型;最后,以一座实桥端锚索的监测数据为感知信息,将变化的索参数实时反馈给孪生模型,实现模型更新和响应预测。研究结果表明,所提出的数字孪生建模方法能及时反馈实桥的参数变化,并预测由此造成的索力、塔顶偏位及主梁跨中挠度的细微改变。

关键词：斜拉桥数字孪生体建模框架和准则孪生模型更新信息交互媒介

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