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磁性铁-黑茶渣基活性炭的制备及对六价铬废水的吸附探究

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广东化工 2024年第12期51卷 11-13,24页

作者：苏晓琳陈冰虹邱文菲吴梓博余振铵黄锦勇罗俊斌郭海侠北京理工大学珠海学院广东珠海519088 珠海汇华环境有限公司广东珠海519000

以黑茶渣为原料,ZnCl_(2)溶液为活化剂制备出黑茶渣基活性炭,后用化学共沉淀法赋予活性炭磁性物质,制得磁性铁-黑茶渣基活性炭。探究黑茶渣活性炭和铁盐的不同配比、搅拌速度、陈化温度、陈化时间等单因素对其碘吸附性能的影响,得出最... 详细信息

以黑茶渣为原料,ZnCl_(2)溶液为活化剂制备出黑茶渣基活性炭,后用化学共沉淀法赋予活性炭磁性物质,制得磁性铁-黑茶渣基活性炭。探究黑茶渣活性炭和铁盐的不同配比、搅拌速度、陈化温度、陈化时间等单因素对其碘吸附性能的影响,得出最佳制备条件:配比为4∶1,搅拌速度为700 rpm,陈化温度为60?C,陈化时间为80 min。通过改变p H、转速和投加量,探究3种活性炭对六价铬废水的吸附效果。

关键词：磁性活性炭茶渣六价铬吸附

Research and application of the virtual simulation system teaching method in NC machining course

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International Journal of Modeling, Simulation, and Scientific Computing 2018年第1期9卷 168-184页

作者： Yongxiang Li Xiaoping Lu Cong Yu haixia guo Dan Zhang Xingzhi College Zhejiang Normal University No.688 Yingbin RoadJinhua Zhejiang 321004P.R.China Zhejiang Wanliyang Transmission Co.Ltd No.3999 West Binhong Road JinhuaZhejiang 321025P.R.China College of Economics and Management Zhejiang Normal University No.688 Yingbin Road Jinhu Zhejiang 321004P.R.China

Virtual simulation technology has become one of the most popular technologies in the field of engineering education after the multimedia information technology in recent *** paper,based on the comprehensive integrated simulation and verification module of UG NX software,describes and discusses a novel virtual simulation system teaching(VSST)for numerically controlled machining to support the student engineering training to achieve the theoretical knowledge and practical techniques in numerically controlled *** findings of a study designed to evaluate the impact of VSST for the development of numerically controlled machining course are presented *** addition,analysis of the follow-up surveys indicates that the VSST method enables to provide the concrete experience of interaction between the students and the simulation environment and to further stimulate students’interest in learning,so that the students who used VSST achieve significantly higher results than their co-workers.

关键词： Architectures for educational technology systems virtual reality computerbased models and simulations computer-supported learning environment

面向共同富裕的中国城乡相对贫困指数的测度及变动分解

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数量经济技术经济研究 2022年第5期39卷 47-63页

作者：斯丽娟郭海霞兰州大学绿色金融研究院兰州大学经济学院

研究目标:测度中国城乡相对贫困与弱相对贫困指数并进行分解,明确影响城乡相对贫困变动的因素。研究方法:将2002~2020年城乡居民收入分组数据还原为观察值与GQ模型拟合洛伦茨曲线结合测度城乡相对贫困指数,并将测得指数分解为四种效应... 详细信息

研究目标:测度中国城乡相对贫困与弱相对贫困指数并进行分解,明确影响城乡相对贫困变动的因素。研究方法:将2002~2020年城乡居民收入分组数据还原为观察值与GQ模型拟合洛伦茨曲线结合测度城乡相对贫困指数,并将测得指数分解为四种效应。研究发现:农村相对贫困指数与弱相对贫困指数均高于城镇,且城乡相对贫困指数有上升趋势,城乡弱相对贫困指数呈下降趋势。分解结果表明,增长效应对城乡相对贫困指数和弱相对贫困指数变动起负向作用,贫困标准效应对城乡两种指数变动起正向作用。分配效应与城乡两种指数的变动一致,人口效应对城镇两种指数变动的作用为正,对农村两种指数变动的作用为负。研究创新:将影响相对贫困变动的因素扩展至人口效应和贫困标准效应,认为影响相对贫困与弱相对贫困变动的因素有增长效应、贫困标准效应、分配效应和人口效应四种。研究价值:为城乡相对贫困的测算与分解提供新的思路,为建立解决相对贫困的长效机制、推进共同富裕提供依据。

关键词：相对贫困弱相对贫困相对贫困变动相对贫困分解

Deletion of heterogeneous nuclear ribonucleoprotein K in satellite cells leads to inhibited skeletal muscle regeneration in mice

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Genes & Diseases 2024年第4期11卷 102-105页

作者： Yongjie Xu haixia Xu Xiaofang Cheng Nuo Chen Yaling Wang Yueru Huang Jiahua guo Yueqian Zheng Mengjia Zhang Chuunyu Du Cunzhen Zhao Cencen Li Pengpeng Zhang College of Life Science Xinyang Normal UniversityXinyangHenan 464000China Institute for Conservation and Utilization of Agro-Bioresources in Dabie Mountain Xinyang Normal UniversityXinyangHenan 464000China

Heterogeneous nuclear ribonucleoprotein K(hnRNPK)is a predominantly nuclear RNA-binding protein that can bind to DNA or RNA through three KH domains and interact with multiple proteins by interactive *** binding activities enable hnRNPK to link the function in a wide array of diverse cellular processes,such as chromatin remodeling,gene transcription,RNA metabolism,protein translation,DNA repair,and cell signal transduction,thereby playing crucial roles in many biological processes,including development,axonal regeneration,spermatogenesis,cell cycle,apoptosis,differentiation,and carcinogenesis.

关键词： inhibited metabolism carcinogenesis

Combining network pharmacology， molecular docking， and experimental verification to investigate the anti-rheumatoid arthritis effect and mechanism of Baeckea frutescens leaves

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Food Science and Human Wellness 2024年

作者： Xueyang guo Mengyao Zhang haixia Cai Xinyue Jiang Siyuan Zhou Wen Gong Zijiao Wei Weili Qiao Beixi Jia Department of Pharmacognosy School of Pharmaceutical Science Zhengzhou University Department of Pharmacy Henan Provincial People's Hospital

The aromatic Baeckea frutescens leaves (BFL) known as “Gang-Song-Cha” is a popular drink (Tea) in South China. To explore the healthcare value， a systematic and in-depth study on BFL alleviating rheumatoid arthritis (RA) was carried out by integrating network pharmacology， molecular docking， and experimental verification. The efficacy was first evaluated， and the BFL extract could ameliorate RA by inhibiting articular swelling， lowering immune organ index， improving the ankle pathologies， and regulating serum levels of TNF-α， IL-6， and IL-10 in CIA rats. Then the anti-RA mechanism of BFL was investigated by leveraging the high-content and active component 5-hydroxy-7-methoxy-2-isopropylchromone (Chro.)， and the potential signaling pathway and related target proteins for Chro. acting on RA were analyzed by KEGG enrichment and docking simulation. Finally， the experimental validations were conducted on RA-FLS cells， and compound Chro. could inhibit cell invasion and migration， block cell cycle at G2/M phase and induce apoptosis， and reduce the secretion of inflammatory cytokines by suppressing the PI3K-Akt pathway. These results provided pharmacological basis for the folk usage of “Gang-Song-Cha (Tea)” for intervening RA.

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鲜切花气调保鲜技术研究进展

植物生理学报 2023年第9期59卷 1720-1734页

作者：雷浩郭海霞程倩孙静扬州大学园艺园林学院江苏省作物遗传生理重点实验室江苏扬州225009

气调技术是最先进的保鲜技术之一,但是在鲜切花保鲜上应用较少。本文介绍了国内外气调保鲜技术发展与现状,归纳总结切花气调中的影响因素:温度、气体成分、包装材料,概述了气调保鲜对鲜切花鲜重损失率、花青素含量、呼吸速率和切花真菌... 详细信息

气调技术是最先进的保鲜技术之一,但是在鲜切花保鲜上应用较少。本文介绍了国内外气调保鲜技术发展与现状,归纳总结切花气调中的影响因素:温度、气体成分、包装材料,概述了气调保鲜对鲜切花鲜重损失率、花青素含量、呼吸速率和切花真菌病害4个方面的影响,并且对鲜切花气调技术应用前景进行了探讨和展望。

关键词：气调库气调包装 CO_(2) O_(2) 鲜切花

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金代税收减免法律制度研究

北方文物 2022年第6期 102-106页

作者：孔令秋郭海霞哈尔滨学院马克思主义学院东北农业大学公共管理与法学院

金代承袭了辽宋的税收法律制度体系,并基于缓和阶级矛盾、实施仁政,以及促进封建经济的繁荣稳定等目的,不断完善税收减免法律制度。金代的税收减免包括因自然灾害、特殊身份和特殊事件而进行的减免措施。金代税收减免制度体现了承袭前... 详细信息

金代承袭了辽宋的税收法律制度体系,并基于缓和阶级矛盾、实施仁政,以及促进封建经济的繁荣稳定等目的,不断完善税收减免法律制度。金代的税收减免包括因自然灾害、特殊身份和特殊事件而进行的减免措施。金代税收减免制度体现了承袭前制以加速封建化进程、基于民族特点进行制度创新、减免方式多样化,以及制度缺乏稳定性等特点。金代的税收减免法律制度具有一定的进步性,但固有的局限性也较为明显。

关键词：金代税收减免两税户牛头税

Emerging direct current triboelectric nanogenerator for high-entropy mechanical energy harvesting

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Science China(Technological Sciences) 2024年第5期67卷 1297-1316页

作者： CHEN Jie guo RuiLong guo HengYu College of Physics and Electronic Engineering Chongqing Normal UniversityChongqing 401331China Department of Applied Physics Chongqing UniversityChongqing 401331China

In the era of the Internet of Things(IoT),the provision of sustainable power to distributed,mobile,and low-power-consumption electronic devices is a critical *** overcome this challenge,the triboelectric nanogenerator(TENG),a highly efficient high-entropy mechanical energy harvesting device,was developed in *** device enables the direct conversion of irregular and low-frequency mechanical energy into pulsed alternating current(AC)***,the incompatibility of most electronic devices with AC signals necessitates rectifier circuits or generators that deliver direct current(DC)*** recent years,DC-TENGs have undergone extensive development,achieving significant milestones in various application fields while also facing crucial challenges that require *** this review,three categories of DC-TENG devices with distinct operating mechanisms are comprehensively explored:multiphase coupling,mechanical rectification,and air *** typical structures and working mechanisms are thoroughly discussed,and specific output performance limitations,along with corresponding optimization strategies,are ***,the applications of DC-TENGs in various scenarios are ***,the challenges faced by DC-TENGs and potential solutions are analyzed to guide further advancements in this technology.

关键词： TENG direct current working mechanisms output performance limitations optimization strategies

Physicochemical principles of hydrogen metallurgy in blast furnace

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Journal of Iron and Steel Research(International) 2024年第1期31卷 46-63页

作者： Han-jie guo School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing100083China Beijing Key Laboratory of Special Melting and Preparation of High-End Metal Materials Beijing100083China

Based on the stoichiometric method and the free energy minimization method,an ideal model for the reduction of iron oxides by carbon and hydrogen under blast furnace conditions was established,and the reduction efficiency and theoretical energy consumption of the all-carbon blast furnace and the hydrogen-rich blast furnace were *** results show that after the reduction reaction is completed at the bottom of the blast furnace,the gas produced by reduction at 1600℃still has a certain excessive reduction capacity,which is due to the hydrogen brought in by the hydrogen-rich blast as well as the excess carbon monoxide generated by the reaction of the coke and the oxygen brought in by the *** the process of the gas with excessive reduction capacity rising from the bottom of the blast furnace and gas reduction process,the excessive reduction capacity of the gas gradually decreases with the increase in the dydrogen content in the *** the all-carbon blast furnace,the excess gas reduction capacity is the strongest,and the total energy consumption per ton of iron reduction is the *** shows that,for the current operation mode of the blast furnace,adding hydrogen in the blast furnace cannot reduce the consumption of carbon required for reduction per ton of iron,but rather increases the consumption of carbon.

关键词： Hydrogen metallurgy Excess gas reduction capacity Theoretical energy consumption Hydrogen-rich blast furnace Thermodynamic model Gibbs minimum free energy method