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Chemical Research in Chinese Universities 2024年第1期40卷 109-118页

作者： ZHANG Wanjia guo tingyu LIU Yanhua ZHANG Xuewei ZOU Bo ZHAO Chun SUO Hui WANG Hui ZHAO Xu College of Chemistry Jilin UniversityChangchun130012P.R.China State Key Laboratory of Integrated Optoelectronics College of Electronic Science and EngineeringJilin UniversityChangchun130012P.R.China Department of Chemical and Biological Engineering University of SaskatchewanSaskatoonSKS7N 5A9Canada

A composite material comprising a carbon layer and spherical carbon/carbon cloth(C-SC/CC)was fabricated using a hydrothermal-pyrolysis method,employing carbon cloth as the substrate and glucose as the carbon *** C-SC/CC electrode was evaluated as an electrocatalytic electrode for hydrogen production by electrolysis of Bunsen reaction *** electrode prepared with 4 g of glucose and annealed at 800°C showed excellent electrocatalytic *** requires only a potential of 185 mV(***)to achieve a current density of 10 mA/***,the electrode demonstrated good stability with a 6%loss in current density after 1000 cycles of scanning from 0.2 V to 1.2 *** results indicate the potential of the SC/CC electrode as an efficient and durable electrocatalyst for the electrolysis of H2SO4 and HI.

关键词： Electrolysis of Bunsen reaction product Carbon material Composite material Hydrogen production

Progress in Combination Therapy of Malignant Melanoma

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Agricultural Biotechnology 2020年第6期9卷 136-140页

作者： Yiwen GU Mingjuan LI Jie ZHANG tingyu guo Xuanhui WANG Baoyue DING Medical College of Jiaxing University Jiaxing 314001China

Malignant melanoma(MM)is a kind of highly-invasive and highly-metastatic tumor,which is insensitive to *** is also one of the most invasive tumors in skin cancer with limited treatment *** to its rapid increase in incidence in recent years and the limitations of monotherapy,it is necessary to use combination *** combination therapy can not only enhance the treatment effect,but also avoid the development of drug resistance as much as *** paper focused on the combined therapy of targeted traditional therapies,immunotherapy with radiotherapy and chemotherapy or other traditional therapies,as well as the research status and new developments of these combined therapies.

关键词： Melanoma Targeted Therapy Nanotechnology Immunotherapy

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小学数学教学中培养学生思维能力的方法探析

天津教育 2021年第33期 24-25页

作者：郭亭玉山东省菏泽市鄄城县陈王街道陈王小学

教育行业正积极推进学科教学改革,数学课程标准对教师教学布置了新的任务,要求小学数学教师重视学生思维能力的培养。小学数学教学不仅要让学生掌握系统化的数学知识,更重要的是让学生养成良好的学习习惯及思维方式。而小学数学教师目... 详细信息

教育行业正积极推进学科教学改革,数学课程标准对教师教学布置了新的任务,要求小学数学教师重视学生思维能力的培养。小学数学教学不仅要让学生掌握系统化的数学知识,更重要的是让学生养成良好的学习习惯及思维方式。而小学数学教师目前最需要思考的问题就是,实施何种教学策略能够帮助学生养成优秀的数学思维能力。

关键词：小学数学思维能力教学

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关于微机控制PWM逆变器若干问题的述评

沈阳机电学院学报 1985年第2期 97-108页

作者：郭庆鼎孙廷玉

本文回顾了PWM逆变器交流调速系统对微机控制的要求。对使用微机实现PWM控制的各种方法作了较为详细的评述,对各种硬软件的折中设计提出了参考性意见。

关键词：逆变器控制 PWM逆变器微机控制交流调速系统弦波三角载波调制波逆变器输出过调制正弦值

基于响应面设计茎段形成层培养猕猴桃幼苗的优化研究

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广西植物 2021年第12期41卷 2091-2099页

作者：段新钰郭婷语王朝兰申婷严胜柒张云峰云南师范大学生命科学学院昆明650500 生物能源持续开发利用教育部工程中心昆明650500

为降低猕猴桃组培快繁中的污染率,提高其繁殖效率,该文以猕猴桃的幼嫩茎段为外植体,采用两步培养法进行茎段形成层的愈伤及成苗诱导研究,并利用响应面设计软件对NAA浓度、6-BA浓度、低渗处理时间进行了各条件的优化,同时通过组织切片确... 详细信息

为降低猕猴桃组培快繁中的污染率,提高其繁殖效率,该文以猕猴桃的幼嫩茎段为外植体,采用两步培养法进行茎段形成层的愈伤及成苗诱导研究,并利用响应面设计软件对NAA浓度、6-BA浓度、低渗处理时间进行了各条件的优化,同时通过组织切片确定愈伤的来源及幼苗的形成方式。结果表明:(1)培养过程中撕除茎段周皮能显著降低污染率,用200~400 mg·L^(-1)的PVP处理猕猴桃茎段可有效防止去皮茎段的褐化。(2)愈伤诱导的最佳条件为预培养28.3 h、NAA 4.45 mg·L^(-1)、6-BA 0.28 mg·L^(-1),而幼苗形成的最佳条件为预培养26.4 h、NAA 4.84 mg·L^(-1)、6-BA 0.42 mg·L^(-1)。这表明形成层愈伤诱导需较长低渗处理时间和较高生长素,而成苗诱导则需较高生长素、激动素及较短的低渗处理时间。(3)组织切片观察结果表明猕猴桃愈伤组织源于形成层干细胞的分裂,且幼苗株源于胚状体的发育。综上结果表明,通过除去猕猴桃嫩茎周皮,外加抗氧化、低渗处理,可有效降低猕猴桃组培快繁中的污染率,提高繁殖系数和胚状体发生率,为猕猴桃种苗的规模化生产提供技术支撑。

关键词：猕猴桃组培快繁干细胞茎段形成层响应面设计软件

Coupling mechanism of activated carbon mixed with dust for flue gas desulfurization and denitrification

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Journal of Environmental Sciences 2020年第12期32卷 205-214页

作者： Junxiang guo Yuran Li Jin Xiong tingyu Zhu Beijing Engineering Research Center of Process Pollution Control National Engineering Laboratory for Hydrometallurgical Cleaner Production TechnologyInstitute of Process EngineeringChinese Academy of SciencesBeijing 100190China Center for Excellence in Regional Atmospheric Environment Institute of Urban EnvironmentChinese Academy of SciencesXiamen 361021China

To clarify the effect of coking dust, sintering dust and fly ash on the activity of activated carbon for various industrial flue gas desulfurization and denitrification, the coupling mechanism of the mixed activated carbon and dust was investigated to provide theoretical reference for the stable operation. The results show that coking dust had 34% desulfurization efficiency and 10% denitrification efficiency;correspondingly, sintering dust and fly ash had no obvious desulfurization and denitrification activities. For the mixture of activated carbon and dust, the coking dust reduced the desulfurization and denitrification efficiencies by blocking the pores of activated carbon, and its inhibiting effect on activated carbon was larger than its own desulfurization and denitrification activity. The sintering dust also reduced the desulfurization efficiency on the activated carbon while enhancing the denitrification efficiency. Fly ash blocked the pores of activated carbon and reduced its reaction activity. The reaction activity of coking dust mainly came from the surface functional groups, similar to that of activated carbon. The reaction activity of sintering dust mainly came from the oxidative property of Fe_2O _3, which oxidized NO to NO_2 and promoted the fast selectively catalytic reduction(SCR) of NO to form N_2. Sintering dust was activated by the joint action of activated carbon, and both had a coupling function. Sintering dust enhanced the adsorption and oxidation of NO, and activated carbon further promoted the reduction of NO_x by NH_3;thus, the denitrification efficiency increased by 5%-7% on the activated carbon.

关键词： Activated carbon Coking dust Sintering dust Fly ash Coupling effect

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烹饪处理对虾肉品质及重金属含量的影响研究

农产品加工 2024年第6期 55-59,63页

作者：王彦花王成刘晓星郭婷钰郑州科技学院食品科学与工程学院河南郑州450064 郑州市食品安全快速检测重点实验室河南郑州450064 河南安必诺检测技术有限公司河南郑州450001

为探究烹饪处理对虾肉品质及重金属含量的影响,比较分析了5种烹饪处理(清蒸、水煮、油炸、烤制和微波)对虾肉的烹调损失率、水分含量、蛋白质含量、脂肪含量,以及镉(Cd)、铬(Cr)、砷(As)、汞(Hg)、铅(Pb)5种重金属含量的影响。结果表明... 详细信息

为探究烹饪处理对虾肉品质及重金属含量的影响,比较分析了5种烹饪处理(清蒸、水煮、油炸、烤制和微波)对虾肉的烹调损失率、水分含量、蛋白质含量、脂肪含量,以及镉(Cd)、铬(Cr)、砷(As)、汞(Hg)、铅(Pb)5种重金属含量的影响。结果表明,油炸后烹调损失率最高、水分含量最低,且活虾的烹调损失率低于冻虾,而水分含量高于冻虾;油炸后蛋白质含量最高,水煮和清蒸后最低,油炸、烤制及微波后脂肪含量升高而清蒸和水煮后降低,冻虾的蛋白质含量高于活虾而脂肪含量低于活虾;油炸后Cd及Cr含量升高,其他4种烹饪处理变化不显著;清蒸后As含量最高而油炸后最低;5种烹饪处理后Pb含量及活虾Hg含量无显著性变化。结果表明,烹饪处理会降低虾肉的水分含量、提高蛋白质及脂肪含量,且对重金属含量产生不同程度的影响。

关键词：烹饪处理虾肉品质重金属含量

Regeneration performance and carbon consumption of semi-coke and activated coke for SO_2 and NO removal

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Journal of Environmental Sciences 2015年第8期27卷 37-43页

作者： Song Ding Yuran Li tingyu Zhu Yangyang guo School of Chemistry and Chemical Engineering Guizhou University National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology Institute of Process Engineering Chinese Academy of Sciences

To decrease the operating cost of flue gas purification technologies based on carbon-based materials, the adsorption and regeneration performance of low-price semi-coke and activated coke were compared for SO2 and NO removal in a simulated flue gas. The functional groups of the two adsorbents before and after regeneration were characterized by a Fourier transform infrared（FTIR） spectrometer, and were quantitatively assessed using temperature programmed desorption（TPD） coupled with FTIR and acid–base titration. The results show that semi-coke had higher adsorption capacity（16.2% for SO2 and 38.6% for NO） than activated coke because of its higher content of basic functional groups and lactones. After regeneration, the adsorption performance of semi-coke decreased because the number of active functional groups decreased and the micropores increased. Semi-coke had better regeneration performance than activated coke. Semi-coke had a larger SO2 recovery of 7.2% and smaller carbon consumption of 12% compared to activated coke. The semi-coke carbon-based adsorbent could be regenerated at lower temperatures to depress the carbon consumption, because the SO2 recovery was only reduced a small amount.

关键词： Functional groups SO2 recovery Adsorption Carbon consumption

Adsorption and desorption of SO_2, NO and chlorobenzene on activated carbon

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Journal of Environmental Sciences 2016年第5期28卷 128-135页

作者： Yuran Li Yangyang guo tingyu Zhu Song Ding Beijing Engineering Research Center of Process Pollution Control National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology Institute of Process Engineering Chinese Academy of Sciences

Activated carbon（AC） is very effective for multi-pollutant removal; however, the complicated components in flue gas can influence each other＇s adsorption. A series of adsorption experiments for multicomponents, including SO_2, NO, chlorobenzene and H2 O,on AC were performed in a fixed-bed reactor. For single-component adsorption, the adsorption amount for chlorobenzene was larger than for SO_2 and NO on the AC. In the multi-component atmosphere, the adsorption amount decreased by 27.6% for chlorobenzene and decreased by 95.6% for NO, whereas it increased by a factor of two for SO_2,demonstrating that a complex atmosphere is unfavorable for chlorobenzene adsorption and inhibits NO adsorption. In contrast, it is very beneficial for SO_2 adsorption. The temperature-programmed desorption（TPD） results indicated that the binding strength between the gas adsorbates and the AC follows the order of SO_2〉 chlorobenzene 〉 NO. The adsorption amount is independent of the binding strength. The presence of H2 O enhanced the component effects, while it weakened the binding force between the gas adsorbates and the AC. AC oxygen functional groups were analyzed using TPD and X-ray photoelectron spectroscopy（XPS） measurements. The results reveal the reason why the chlorobenzene adsorption is less affected by the presence of other components. Lactone groups partly transform into carbonyl and quinone groups after chlorobenzene desorption. The chlorobenzene adsorption increases the number of C = O groups, which explains the positive effect of chlorobenzene on SO_2 adsorption and the strong NO adsorption.

关键词： Activated carbon Multi-components Functional groups Binding force Flue gas

链箅机—回转窑—环冷机球团系统热经济性分析

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冶金能源 2024年第4期43卷 15-20页

作者：郭婷宇沈晓旭韩依璇冯亮花孙玉英霍兆义辽宁科技大学材料与冶金学院上海嘉德环境能源科技有限公司

以降低球团生产系统能耗为目标,进一步了解球团生产过程中能流及[火用]流的变化和损失情况,对链箅机—回转窑—环冷机氧化焙烧球团系统进行了热平衡及[火用]平衡计算分析。系统热收入和[火用]收入主要项为燃料化学能和球团氧化。热量消... 详细信息

以降低球团生产系统能耗为目标,进一步了解球团生产过程中能流及[火用]流的变化和损失情况,对链箅机—回转窑—环冷机氧化焙烧球团系统进行了热平衡及[火用]平衡计算分析。系统热收入和[火用]收入主要项为燃料化学能和球团氧化。热量消耗主要用于排出废热和外表面散热。传热、燃烧不可逆[火用]损失和系统机体散热[火用]损失为[火用]支出主要部分。针对系统废热余热资源未完全利用情况,提出环冷废气余热循环利用和回转窑表面散热回收等建议,经计算优化后,对于废气余热循环,利用环冷二段与三段废气余热使热效率提高至85.29%、[火用]效率提高至33.40%;回收集热器余热使热效率提高至86.53%、[火用]效率提高至33.93%。研究结果为球团生产提供建议,并结合实际寻找适合该系统的余热利用方案,为节能优化提供参考。

关键词：链箅机—回转窑—环冷机氧化球团热平衡 [火用]平衡余热利用