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Engineering heterointerfaces coupled with oxygen vacancies in lanthanum–based hollow microspheres for synergistically enhanced oxygen electrocatalysis

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Journal of Energy Chemistry 2021年第9期30卷 503-511页

作者： Jie Zhanga Jinwei Chen Yan Luo Yihan Chen Chenyang Zhang Yingjian Luo Yali Xue honggang liu Gang Wang Ruilin Wang College of Materials Science and Engineering Sichuan UniversityChengdu 610065SichuanChina Engineering Research Center of Alternative Energy Materials&Devices Ministry of EducationChengdu 610065SichuanChina

The development of high–efficiency and low–cost bifunctional oxygen electrocatalysts is critical to enlarge application of zinc–air batteries(ZABs). However, it still remains challenges due to their uncontrollable factor at atomic level during the catalysts preparation, which requires the precise regulation of active sites and structure engineering to accelerate the reaction kinetics for both oxygen reduction reaction(ORR) and oxygen evolution reaction(OER). Herein, a novel Co–doped mixed lanthanum oxide and hydroxide heterostructure(termed as Co–La MOH|OV@NC) was synthesized by pyrolysis of La–MOF–NH_(2) with spontaneous cobalt doping. Synergistic coupling of its hollow structure, doping effect and abundant oxygen vacancies creates more active sites and leads to higher electroconductivity, which contribute to the better performance. As employed as a bifunctional oxygen electrocatalyst, the resulting 3 Co–La MOH|OV@NC exhibits superior electrocatalytic activity for both ORR and OER. In assembled ZAB, it also demonstrates an excellent power density of 110.5 m W cm^(-2), high specific capacity of 810 m Ah g_(Zn)^(-1), and good stability over 100 h than those of Pt/C + RuO_(2). Density functional theory(DFT) calculation reveals that the heterointerfaces coupled with oxygen vacancies lead to an enhanced charge state and electronic structure, which may optimize the conductivity, charge transfer, and the reaction process of *** study provides a new strategy for designing highly efficient bifunctional oxygen electrocatalysts based on rare earth oxide and hydroxides heterointerface.

关键词： Metal-organic frameworks Heterostructured hybrid Oxygen vacancies Bifunctional electrocatalyst Zinc-air batteries

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中山市典型污水处理厂碳排放核算研究

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广东化工 2024年第16期51卷 138-141,127页

作者：张宇刘红刚赵欣莫丽华杨墨林苑柔中山市环境保护科学研究院有限公司广东中山528400 中山公用城市排水有限公司广东中山528400

污水处理厂是环保领域主要的碳排放源,为助力实现我国的“双碳”目标,有必要通过开展污水处理厂碳排放核算与量化工作,摸清污水处理过程的资源能源消耗与碳排放底数,科学评估污水处理厂碳排放,深挖污水处理厂的节能降碳潜力。本研究选... 详细信息

污水处理厂是环保领域主要的碳排放源,为助力实现我国的“双碳”目标,有必要通过开展污水处理厂碳排放核算与量化工作,摸清污水处理过程的资源能源消耗与碳排放底数,科学评估污水处理厂碳排放,深挖污水处理厂的节能降碳潜力。本研究选取了中山市典型污水处理厂作为研究对象,采用科学核算方法,基于污水处理厂年度运行数据,从直接排放和间接排放角度对污水处理厂进行碳排放综合核算。结果显示中嘉污水处理厂一、二期工程2022年污水处理过程的温室气体直接排放总量为6145.73tCO_(2)当量,全年因耗电所产生的温室气体间接排放为15081.65tCO_(2)当量,因相关药剂使用带来的温室气体间接排放总计为2164.52tCO_(2)当量。从结果可知,对于中嘉污水处理厂直接排放的温室气体,减少其排放会引起污水处理效果的不稳定,减排空间较小。对于间接排放,中嘉污水处理厂因耗电所产生的间接排放量最高,占比达68%,降碳潜力较大,后期可通过加强运营管理、智慧化运营、使用低耗能设备等多种方式降低能耗,进而减少间接温室气体排放量。

关键词：污水处理厂碳排放直接温室气体排放间接温室气体排放

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Microarray gene expression analysis of chemosensitivity for docetaxel,cisplatin and 5-fluorouracil(TPF)combined chemotherapeutic regimen in hypopharyngeal squamous cell carcinoma

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Chinese Journal of Cancer Research 2017年第3期29卷 204-212页

作者： Meng Lian Haizhou Wang Jugao Fang Jie Zhai Ru Wang Xixi Shen Yifan Yang Zhihong Ma honggang liu Department of Otorhinolaryngology Head and Neck Surgery Beijing Tongren HospitalCapital Medical UniversityBeijing 100730China Beijing Key Laboratory of Head and Neck Molecular Diagnostic Pathology Beijing 100730China

Objective: To screen out a set of candidate genes which could help to determine whether patients with hypopharyngeal squamous cell carcinoma (HSCC) could benefit from docetaxel, cisplatin and 5-fluorouracil (TPF) induction chemotherapy. Methods: Gene-expression profiles in 12 TPF-sensitive patients were compared to 9 resistant controls by microarray analysis. Subsequently, expression levels of potential biomarkers in chemosensitive cell line FaDu after TPF treatment were observed by quantitative real-time polymerase chain reaction (qRT-PCR). Results: Through microarray analysis, 1,579 differentially expressed genes were identified, of which 815 were up-regulated in TPF chemotherapy-responsive tissues whereas 764 were down-regulated. Gene ontology (GO) analysis suggested these genes participating in physiological processes including transcription and its regulation, cellular signal transduction and metabolic process. Additionally, Kyoto Encyclopedia of Genes and Genomes (KEGG) database revealed that MAPK and Jat/STAT signaling pathways occupied important roles in TPF chemotherapeutic sensitivity. Moreover, in vitro cell culture experiments revealed the expression alternations of IL-6, MAPK14, JUN, CDK5 and CAMK2A exposed to TPF treatment by qRT-PCR, whilst providing an insight into the mechanism underlying TPF chemotherapeutic response in HSCC. Conclusions: These results provided a battery of genes related to TPF chemotherapeutic sensitivity and might act as molecular targets in HSCC treatment. Moreover, these candidate biomarkers could contribute to HSCC individualized treatment.

关键词： Microarray HSCC induction chemotherapy MAPK

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Region-based Multi-focus Image Fusion Using the Local Spatial Frequency

Region-based Multi-focus Image Fusion Using the Local Spatia...

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第25届中国控制与决策会议

作者： Qingping Li Junping Du Fuzhao Song Chao Wang honggang liu Cheng Lu Beijing Key Lab of Intelligent Telecommunication Software and Multimedia School of Computer Science Beijing University of Posts and Telecommunications

ISBN: (纸本)9781467355339

In image fusion domain, generic pixel-based image fusion methods are sensitive to imperfections of source images, and it therefore has much influence on the quality of the fusion results. Focusing on this problem, a region-based multi-focus image fusion scheme is proposed based on the local spatial frequency （LSF） in this paper. Firstly, calculate LSF for each pixel of source images, and a segmentation of the average image is introduced to segment the source images. From the segmented image, a shared region representation is obtained to label the source images. The identification of important features in shared region representation, region spatial frequency （RSF）, is used to guide the fusion process. The experimental results show that the proposed scheme works well in multi-focus image fusion, and it outperforms comparison methods in terms of visual and objective evaluations.

关键词： Multi-focus Image Fusion Local Spatial Frequency Image Segmentation

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Tryptophan-specific peptide modification through metal-free photoinduced N-H alkylation employing N-aryl glycines

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Chinese Chemical Letters 2024年第6期35卷 316-319页

作者： Jianhui Yin Wenjing Huang Changyong Guo Chao liu Fei Gao honggang Hu School of Medicine or Institute of Translation Medicine Shanghai UniversityShanghai 200444China

Tryptophan(Trp)carries a unique heteroaromatic indole side chain and plays a critical role in peptide or protein ***,we have reported a metal-free photoinduced N-H alkylation strategy using N-aryl glycines for specific modification of tryptophan-containing *** robustness of our approach is demonstrated by its wide substrate scope,excellent isolated yields,as well as almost unobservable side *** this highly efficiently metal-free condition,alkylated Trp-containing peptides can be smoothly *** study provides a reliable and practical tool for the chemo-selective modification of various tryptophan containing oligopeptides.

关键词： Tryptophan Peptide Modification Glycine Photoinduced

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中山市环保共性产业园减污降碳协同控制研究——以中山市某工业园区为案例

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广东化工 2024年第6期51卷 99-103页

作者：林苑柔刘红刚莫丽华谢佩红冯嘉萍杨墨中山市环境保护科学研究院有限公司广东中山528400

工业领域是我国污染物和碳排放产生的主要领域,2022年中山市创新性提出“环保共性产业园”的建设设想,是工业领域减污降碳协同增效一次积极的探索。本研究通过收集我市某工业园区环评报告、废水处理设施技术方案等资料,对环保共性产业... 详细信息

工业领域是我国污染物和碳排放产生的主要领域,2022年中山市创新性提出“环保共性产业园”的建设设想,是工业领域减污降碳协同增效一次积极的探索。本研究通过收集我市某工业园区环评报告、废水处理设施技术方案等资料,对环保共性产业园减污降碳协同控制的情况进行分析研究,并提出下一步发展建议。通过数据比对发现,环保共性产业园因产能上升,生产废水、SO_(2)和NO_(x)以及危险废物的排放量均呈现上升趋势,但COD、颗粒物、VOCs污染物排放量下降。经计算,园区年碳排放量为9.11万吨,碳排放主要来自天然气燃烧的直接排放。后续建议园区要在整体布局、技术创新以及运行管理方面应采取更积极主动的措施,以实现减污降碳协同增效。

关键词：环保共性产业园减污降碳协同控制

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HMGB 1在浸润性喉鳞状细胞癌发生和发展中的作用及临床意义

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临床与病理杂志 2024年第1期44卷 38-44页

作者：苏才丽滕孝静王苗岳冰陈光勇刘红刚首都医科大学附属北京友谊医院病理科北京100050 首都医科大学附属北京同仁医院病理科/头颈部分子病理诊断北京市重点实验室北京100730

目的:浸润性喉鳞状细胞癌(invasive laryngeal squamous cell carcinoma,I-LSCC)早期诊断、早期干预治疗是降低其发病率和病死率的关键。本研究旨在探讨高迁移率族蛋白B1(high mobility group box-1,HMGB1)在I-LSCC发生和发展中的作用... 详细信息

目的:浸润性喉鳞状细胞癌(invasive laryngeal squamous cell carcinoma,I-LSCC)早期诊断、早期干预治疗是降低其发病率和病死率的关键。本研究旨在探讨高迁移率族蛋白B1(high mobility group box-1,HMGB1)在I-LSCC发生和发展中的作用及临床意义。方法:收集2009年11月至2011年6月北京同仁医院病理科的石蜡包埋标本281例,包括I-LSCC 123例、喉黏膜异型增生(laryngeal precursor lesions,LPLs)103例(其中低级别异型增生31例、高级别异型增生49例、原位癌23例)及声带息肉(vocal polyp,VP)55例。应用免疫组织化学染色检测标本中HMGB1及Ki-67的表达,其中HMGB1阳性强度和阳性率得分相加总分为0~7(0~4分为低表达,5~7分为高表达);Ki-67阳性率≥50%为高表达,0.05)。36.59%的I-LSCC同时具有HMGB1高表达及Ki-67高表达,且HMGB1高表达组和低表达组的Ki-67阳性率差异有统计学意义(P=0.01);33.33%的I-LSCC同时具有HMGB1高表达及淋巴结转移,且HMGB1高表达组和低表达组的淋巴结转移率差异有统计学意义(P0.05)。HMGB1高表达的I-LSCC患者预后较HMGB1低表达的患者更差(P<0.05)。结论:HMGB1在I-LSCC中高表达,可能在I-LSCC的发生和发展中起重要作用。

关键词：喉黏膜异型增生浸润性喉鳞状细胞癌高迁移率族蛋白B1

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English Vocabulary Learning Strategy Use in a Chinese Key Middle School

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Chinese Journal of Applied Linguistics 2013年第1期36卷 86-105页

作者： GAO Xuesong liu honggang ZHU Fenmei The University of Hong Kong Hong Kong SAR Northeast Normal University The Middle School attached to Northern Jiaotong University

This paper reports on a mixed method inquiry into the use of vocabulary learning strategies and their development as strategic vocabulary learners in a key middle school on the Chinese mainland. In the inquiry, 475 first year junior secondary school pupils （247 boys and 228 girls） were surveyed about their strategy use in learning English vocabulary. Sixteen pupils （8 boys and 8 girls） participated in paired semi-structured interviews about their experiences of learning English vocabulary. Drawing on socio-cultural perspectives on language learning, the inquiry established the interconnections between the participants＇ strategy use and beliefs and identified the roles that agency played in their vocabulary learning. The analysis of interview data further revealed that the participants＇ strategy use emerged from interaction between their agency and the mediation of contextual resources and social agents including parents and teachers. These findings suggest that it is important for language teachers to collaborate with social agents such as parents in their efforts to support young learners＇ strategic vocabulary learning.

关键词： agency context sociocultural perspectives vocabulary learning strategies mixed-method study

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Enhancing zinc-air battery performance by constructing threedimensional N-doped carbon coating multiple valence Co and MnO heterostructures

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Nano Research 2024年第6期17卷 5104-5113页

作者： Qi liu Panzhe Qiao Miaomiao Tong Ying Xie Xinxin Zhang Kuo Lin Zhijian Liang Lei Wang honggang Fu Key Laboratory of Superlight Materials and Surface Technology of the Ministry of Education of the People’s Republic of China Harbin Engineering UniversityHarbin 150080China Key Laboratory of Functional Inorganic Material Chemistry Ministry of Education of the People’s Republic of China Heilongjiang UniversityHarbin 150080China Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201204China

Developing highly-efficient bifunctional oxygen evolution reaction(OER)and oxygen reduction reaction(ORR)electrocatalysts is crucial for the widespread application of rechargeable Zn-air batteries(ZABs).Herein,an efficiency electrodeposition and pyrolytic strategy to synthesize the three-dimensional(3D)N-doped carbon coating multiple valence Co and MnO heterostructures supported on carbon cloth substrate(Co-MnO@NC/CC).It contains Co-Co,Co-N,and Co-O bonds,which synergistically enhance the oxygen reaction activity with *** exhibits a working potential of 1.473 V at 10 mA·cm^(−2)for OER and onset potential of 0.97 V for *** calculations demonstrate that the synergy between cobalt and manganese species could optimize the d-band center and reduce the energy barrier of Co-MnO@NC/CC for both OER and ORR ***,the MnO acts as the main OER active site could significantly optimize the energy barrier of O*→OOH*,thus further promoting the OER *** can be directly used as the air-cathode for both liquid-state and solid-state ZABs,which could afford a small voltage gap of 0.75 V at 10 mA·cm^(−2),a high power density of 172.5 mW·cm^(−2)and a long-term durability for 400 h,surpassing those of the Pt/C+RuO_(2)-based ***,the assembled batteries show potential applications in portable devices.

关键词： heterostructure synergy valence cobalt manganese oxide Zn-air battery

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Design and experiment of high-speed straw cleaning unit with double air springs

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International Journal of Agricultural and Biological Engineering 2024年第4期17卷 89-97页

作者： Xiaomeng Xia honggang Li Shuyan liu Ruiqiang Ran Yongjian Cong Yuhan Jin Dongyan Huang School of Biological and Agricultural Engineering Jilin UniversityChangchun 130022China Key Laboratory of Bionic Engineering Ministry of EducationJilin UniversityChangchun 130022China Jilin Agricultural Machinery Research Institute Changchun 130022China

No-tillage planters need to be equipped with row cleaners to remove post-harvest plant residue from the *** two-disc row cleaners cannot effectively remove the plant residue at high speed because the working depth is unstable,which leads to poor seeding quality of the seeder.A straw cleaning unit with double air springs was designed to achieve better straw cleaning performance at high *** analysis of the mechanical characteristics of the double air spring system showed that it enabled separate adjustment of force and stiffness.A dynamic model of the straw cleaning unit was established,and the effectiveness of the double air spring system with adjustable stiffness in stabilizing the working depth of the row cleaners was *** experiments were conducted to evaluate the straw cleaning performance and consistency of downforce against the ground of the straw cleaning unit with double air springs at different high *** results showed that the stiffness of the double air spring system for better straw cleaning performance of the straw cleaning unit was different at different working speed,and the required stiffness increased as the working speed increased;When the working speed was 8-12 km/h,the coefficient of variation of cleaned strip width was 6.9%-12.1%,the straw cleaning rate was 81.6%-92.2%and the root mean square error of downforce was 19.93-28.63 N;the coefficient of variation of cleaned strip width was moderately positively correlated with the root mean square error of downforce,and the cleaned strip width consistency was better when the root mean square error of downforce was lower than 25.00 N.

关键词： conservation tillage row cleaners straw cleaning unit double air spring system

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