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粳米重组米的制备工艺优化及性能研究

食品工业科技 2024年第5期45卷 169-176页

作者：高嫚贾健辉张楚佳张智刘颖窦博鑫张娜哈尔滨商业大学食品工程学院黑龙江哈尔滨150028 牡丹江师范学院生命科学与技术学院黑龙江牡丹江157011 北大荒米业集团有限公司黑龙江哈尔滨150090

以碎粳米粉为原料,添加一定量的抗性粳米淀粉,采用双螺杆挤压技术制备重组米,考察了模头温度、水分含量和螺杆转速对重组米品质的影响。在单因素基础上,采用响应面优化了挤压工艺条件,测定了重组米的糊化、流变、蒸煮和消化性能。结果表... 详细信息

以碎粳米粉为原料,添加一定量的抗性粳米淀粉,采用双螺杆挤压技术制备重组米,考察了模头温度、水分含量和螺杆转速对重组米品质的影响。在单因素基础上,采用响应面优化了挤压工艺条件,测定了重组米的糊化、流变、蒸煮和消化性能。结果表明,当模头温度100℃、水分含量28%、螺杆转速96 r/min时,重组米的综合得分达到70.7±0.5。重组米糊化特性的各项指标均低于市售粳米,而黏度、回生值和糊化温度略高于空白重组米;重组米G'、G"低于市售粳米,略高于空白重组米;重组米的吸水率、体积膨胀率和蒸煮损失率均高于空白重组米和市售粳米;相比于空白重组米和市售粳米,重组米的SDS和RS含量较高,RDS含量较低,分别为51.62%、9.37%和39.01%。本研究结果可为低消化性重组米产品的开发提供实验依据。

关键词：重组米挤压性能抗性粳米淀粉

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新型带电作业平台的结构设计与仿真研究

河北电力技术 2024年第1期43卷 34-40页

作者：李宁何义良赵建辉刘兆威田志国网河北省电力有限公司衡水供电分公司河北衡水053000

利用带电作业平台进行带电检修作业是维护架空输电线路正常运行的主要手段之一,而传统的带电作业平台仍存在结构或适用范围上的局限性。提出一种用于架空输电线路带电检修的新型带电作业平台,该平台的主体框架由方钢构成,易于制造且携... 详细信息

利用带电作业平台进行带电检修作业是维护架空输电线路正常运行的主要手段之一,而传统的带电作业平台仍存在结构或适用范围上的局限性。提出一种用于架空输电线路带电检修的新型带电作业平台,该平台的主体框架由方钢构成,易于制造且携带轻便,另外设有可任意调节旋转角度的载人板及开关保险装置,确保该平台在使用过程中方便灵活且安全可靠。建立了该带电作业平台的有限元模型,分析了不同工作需求下平台的力学性能,计算了作业人员利用平台进行带电作业时身体周围的电场强度分布情况,并提出相应防护建议。经现场运行试验,验证了新型带电作业平台的可行性与安全可靠性。

关键词：力电耦合带电作业结构设计力学仿真电场仿真

Real-time drogue recognition and 3D locating for UAV autonomous aerial refueling based on monocular machine vision

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Chinese Journal of Aeronautics 2015年第6期28卷 1667-1675页

作者： Wang Xufeng Kong Xingwei zhi jianhui Chen Yong Dong Xinmin School of Aeronautics and Astronautics Engineering Air Force Engineering University State Key Laboratory of Intelligent Technology and Systems Tsinghua University

Drogue recognition and 3D locating is a key problem during the docking phase of the autonomous aerial refueling （AAR）. To solve this problem, a novel and effective method based on monocular vision is presented in this paper. Firstly, by employing computer vision with red-ring-shape feature, a drogue detection and recognition algorithm is proposed to guarantee safety and ensure the robustness to the drogue diversity and the changes in environmental condi- tions, without using a set of infrared light emitting diodes （LEDs） on the parachute part of the dro- gue. Secondly, considering camera lens distortion, a monocular vision measurement algorithm for drogue 3D locating is designed to ensure the accuracy and real-time performance of the system, with the drogue attitude provided. Finally, experiments are conducted to demonstrate the effective- ness of the proposed method. Experimental results show the performances of the entire system in contrast with other methods, which validates that the proposed method can recognize and locate the drogue three dimensionally, rapidly and precisely.

关键词： Autonomous aerial refueling Drogue 3D locating Drogue attitudemeasurement Drogue detection Drogue recognition Monocular machine vision

Robust Adaptive Fault Estimation for a Class of Over-actuated Systems with Loss of Effectiveness Actuator Faults

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Robust Adaptive Fault Estimation for a Class of Over-actuate...

Recent progress in organic solar cells(PartⅠmaterial science)

第37届中国控制会议

作者： Yong Chen jianhui zhi Xinmin Dong Li Zhao Yali Chen Aeronautical Engineering College Air Force Engineering University Shaanxi International College of Trade & Commerce PLA Air Force the 94916 unit

Focusing on the fault estimation problem of a class of over-actuated systems in the presence of loss of effectiveness actuator faults, we propose a robust adaptive fault estimation method. In this method, the persistence of excitation condition required by parameter estimation methods is relaxed via concurrent learning technique. Bounded external disturbance is eliminated by constructing the estimation error information with a series of filtered system variables. Simulation results demonstrate the effectiveness and robustness of the proposed method.

关键词： Over-actuated systems actuator fault fault estimation persistence of excitation

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Science China Chemistry 2022年第2期65卷 224-268页

作者： Yahui Liu Bowen Liu Chang-Qi Ma Fei Huang Guitao Feng Hongzheng Chen jianhui Hou Lingpeng Yan Qingya Wei Qun Luo Qinye Bao Wei Ma Wei Liu Weiwei Li Xiangjian Wan Xiaotian Hu Yanchun Han Yaowen Li Yinhua Zhou Yingping Zou Yiwang Chen Yongfang Li Yongsheng Chen Zheng Tang zhicheng Hu zhi-Guo Zhang zhishan Bo College of Textiles&Clothing State Key Laboratory of Bio-fibers and Eco-textilesQingdao UniversityQingdao 266071China Suzhou Institute of Nano-Tech and Nano-Bionics Chinese Academy of SciencesSuzhou 215123China Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materials and DevicesSouth China University of TechnologyGuangzhou 510640China Beijing Advanced Innovation Center for Soft Matter Science and Engineering&State Key Laboratory of Organic-Inorganic Composites Beijing University of Chemical TechnologyBeijing 100029China State Key Laboratory of Silicon Materials MOE Key Laboratory of Macromolecular Synthesis and FunctionalizationDepartment of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027China Beijing National Laboratory for Molecular Sciences Institute of ChemistryChinese Academy of SciencesBeijing 100190China State Key Laboratory of Powder Metallurgy College of Chemistry and Chemical EngineeringCentral South UniversityChangsha 410083China School of Physics and Electronic Science East China Normal UniversityShanghai 200241China State Key Laboratory for Mechanical Behavior of Materials Xi’an Jiaotong UniversityXi’an 710049China State Key Laboratory and Institute of Elemento-Organic Chemistry Key Laboratory of Functional Polymer MaterialsCollege of ChemistryNankai UniversityTianjin 300071China College of Chemistry/Institute of Polymers and Energy Chemistry(IPEC) Nanchang UniversityNanchang 330031China State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China Laboratory of Advanced Optoelectronic Materials College of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhou 215123China Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan 430074China Center for Advanced Low-Dimension Materials State Key Laboratory for Modification of Chemical Fibers and Polymer Material

During past several years,the photovoltaic performances of organic solar cells(OSCs)have achieved rapid progress with power conversion efficiencies(PCEs)over 18%,demonstrating a great practical application prospect.The development of material science including conjugated polymer donors,oligomer-like organic molecule donors,fused and nonfused ring acceptors,polymer acceptors,single-component organic solar cells and water/alcohol soluble interface materials are the key research topics in OSC field.Herein,the recent progress of these aspects is systematically summarized.Meanwhile,the current problems and future development are also discussed.

关键词： organic solar cells power conversion efficiency photovoltaic materials polymer solar cells

鄱阳湖越冬期东方白鹳取食行为及其在2个区域的种群动态

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林业科学 2023年第5期59卷 128-135页

作者：杨福成雷小勇曾健辉邵明勤植毅进江西师范大学生命科学学院南昌330022 余干县林业局上饶335100

【目的】探索了解东方白鹳在鄱阳湖不同立地条件下的取食对策、在鄱阳湖2个区域的种群数量分布规律,为东方白鹳的保护提供理论依据。【方法】2021年12月—2022年3月,采用焦点动物法对鄱阳湖国家级自然保护区和五星白鹤保护小区的东方白... 详细信息

【目的】探索了解东方白鹳在鄱阳湖不同立地条件下的取食对策、在鄱阳湖2个区域的种群数量分布规律,为东方白鹳的保护提供理论依据。【方法】2021年12月—2022年3月,采用焦点动物法对鄱阳湖国家级自然保护区和五星白鹤保护小区的东方白鹳取食行为进行观察。2015—2021年和2012—2022年,借助单筒望远镜(SWAROVSKI,20~60×)每年1月分别对东鄱阳湖国家湿地公园(PLNWP)和鄱阳湖南矶湿地国家级自然保护区(NWNNR)的东方白鹳种群数量进行1次调查。【结果】鄱阳湖越冬期东方白鹳的栖息水深为(17.22±6.28)cm(n=754),Ⅲ级水深和Ⅱ级水深为东方白鹳最常见的栖息水深,分别占51.33%和35.94%。东方白鹳取食水深为14.64 cm±6.26 cm(n=669),以H3级和H2级水深为主,分别占43.20%和37.52%。东方白鹳取食频次为(6.58±3.13)times·min^(-1)(n=334),取食成功频次为(0.2±0.53)times·min^(-1)(n=334),取食成功率为(3.36±9.55)%(n=334),步频为(20.15±11.49)steep·min^(-1)(n=334)。Ⅰ级水深下步频极显著高于Ⅱ级(P<0.001)、Ⅲ级(P<0.001)、Ⅳ级(P=0.006),Ⅲ级水深下的取食频次显著高于Ⅰ级(P=0.038)。上午的步频极显著低于中午(P<0.001)和下午(P<0.001),中午的步频显著高于下午(P=0.017)。下午的取食成功频次(P=0.005)和成功率(P=0.006)均极显著高于中午。步频与栖息水深(P<0.001)呈极显著负相关,取食频次与栖息水深(P=0.004)呈极显著正相关。2015—2021年在PLNWP共记录东方白鹳979只次,2012—2022年在NWNNR共记录东方白鹳5233只次。NWNNR东方白鹳种群大小较PLNWP高且相对稳定。在PLNWP,东方白鹳主要分布于聂家和汉池湖南,在NWNNR,东方白鹳主要分布于三湖和常湖。【结论】东方白鹳可以依据水深和时段等环境变量适时灵活改变其觅食对策,保证能量的获取。保持大面积的12~25 cm水深的水域有利于东方白鹳的觅食和生存。东方白鹳在PLNWP和NWNNR均趋于集中分布,对栖息环境要求较高。NWNNR可为东方白鹳提供更稳定的栖息和觅食环境,对东方白鹳的保护具有重大意义。

关键词：取食行为东方白鹳种群动态鄱阳湖

Visible-light-driven heterostructured g-C_(3)N_(4)/Bi-TiO_(2) floating photocatalyst with enhanced charge carrier separation for photocatalytic inactivation of Microcystis aeruginosa

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Frontiers of Environmental Science & Engineering 2021年第6期15卷 367-378页

作者： Jingke Song Chenyang Li Xuejiang Wang Songsong zhi Xin Wang jianhui Sun School of Environment Key Laboratory for Yellow River and Huai River Water Environment and Pollution Control(Ministry of Education)Henan Key Laboratory for Environmental Pollution ControlHenan Normal UniversityXinxiang 453007China College of Environmental Science and Engineering State Key Laboratory of Pollution Control and Resource ReuseTongji UniversityShanghai 200092China Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials Guangdong Engineering Technology Research Center of Efficient Green Energy and Environment Protection MaterialsSchool of Physics and Telecommunication EngineeringSouth China Normal UniversityGuangzhou 510006China

The increase in occurrence and severity of cyanobacteria blooms is causing increasing concern;moreover,human and animal health is affected by the toxic effects of Microcystin-LR released into the water.In this paper,a floating photocatalyst for the photocatalytic inactivation of the harmful algae Microcystis aeruginosa(M.aeruginosa)was prepared using a simple sol-gel method,i.e.,coating g-C_(3)N_(4) coupled with Bi-doped TiO_(2) on Al_(2)O_(3)-modified expanded perlite(CBTA for short).The impact of different molar ratios of Bi/Ti on CBTA was considered.The results indicated that Bi doping in TiO_(2) inhibited photogenerated electron-hole pair recombination.With 6 h of visible light illumination,75.9%of M.aeruginosa(initial concentration=2.7106 cells/L)and 83.7%of Microcystin-LR(initial concentration=100μg/L)could be removed with the addition of 2 g/L CBTA1%(i.e.,Bi/Ti molar ratio=1%).The key reactive oxygen species(ROSs)in the photocatalytic inactivation process are h+andOH.The induction of the Bi^(4+)/Bi^(3+)species by the incorporation of Bi could narrow the bandgap of TiO_(2),trap electrons,and enhance the stability of CBTA-1%in the solutions with coexisting environmental substances.

关键词： Bi doping Visible light Algal removal Charge carrier separation

一种采用DEM技术的16-bit 2.5 GHz电流舵数模转换器设计

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电子器件 2023年第3期46卷 624-629页

作者：吴俊杰吴建辉智贺东南大学国家专用集成电路系统工程技术研究中心江苏南京210096

电流舵数模转换器(DAC)的动态性能受电流源失配的影响。采用6+10的分段方式,分析比较了几种动态元件匹配(DEM)算法,采用了一种分段温度数据权重平均(Segmented Thermo Data-Weighted Average, STDWA)技术,并将其应用于高6位的温度计编码... 详细信息

电流舵数模转换器(DAC)的动态性能受电流源失配的影响。采用6+10的分段方式,分析比较了几种动态元件匹配(DEM)算法,采用了一种分段温度数据权重平均(Segmented Thermo Data-Weighted Average, STDWA)技术,并将其应用于高6位的温度计编码中,消除对输入编码的依赖,弱化电流源失配的影响,以优化动态性能。基于TSMC 55 nm工艺,设计实现了一种16位2.5 GHz的电流舵DAC,测试结果显示,在2.5 GHz采样率和94.15 MHz输入信号频率条件下,无杂散动态范围(SFDR)提升了6 dB。

关键词：数模转换器(DAC) 电流舵分段译码动态元件匹配(DEM) 无杂散动态范围(SFDR)

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物理法制备RS3型抗性淀粉的研究进展

食品工业科技 2023年第13期44卷 425-433页

作者：张楚佳窦博鑫高嫚张智刘颖贾健辉张娜哈尔滨商业大学食品工程学院黑龙江哈尔滨150028 北大荒米业集团有限公司黑龙江哈尔滨150090 牡丹江师范学院生命科学与技术学院黑龙江牡丹江157011

抗性淀粉是指在健康人体小肠不被消化和吸收的多糖类物质,对人体健康有益。回生淀粉(RS3)作为抗性淀粉的其中一类,因具有热稳定性好、持水性低等特点,在食品工业中被广泛应用。本文分别综述了近年来超声法、微波法、湿热法以及韧化法制... 详细信息

抗性淀粉是指在健康人体小肠不被消化和吸收的多糖类物质,对人体健康有益。回生淀粉(RS3)作为抗性淀粉的其中一类,因具有热稳定性好、持水性低等特点,在食品工业中被广泛应用。本文分别综述了近年来超声法、微波法、湿热法以及韧化法制备RS3型抗性淀粉对其得率、理化性质和结构的影响,并对物理法制备RS3型抗性淀粉的现状提出展望,以期为物理法制备RS3型抗性淀粉的研究提供有益的参考,促进物理法制备抗性淀粉的实际应用。

关键词： RS3型抗性淀粉物理法性质结构