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Effects of photoperiod and temperature on reproductive diapause in Ophraella communa （Coleoptera： Chrysomelidae）, a potential biocontrol agent against Ambrosia artemisiifolia

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Insect Science 2012年第3期19卷 286-294页

作者： Dao-Hong Zhu Jing Zhu Zhao-Pu Peng Fang-hao wan Laboratory of Insect Behavior and Evolutionary Ecology Central South University of Forestry and TechnologyChangsha Laboratory of Zoology Hunan First Normal UniversityChangsha Institute of Plant Protection Hunan Academy of Agricultural SciencesChangsha State Key Laboratory for Biology of Plant Diseases and Insect Pests Institute of Plant ProtectionChinese Academy of Agricultural SciencesBeijingChina

To investigate the seasonal adaptation strategies of Ophraella communa to new habitats, the effects and regulation mechanisms of photoperiod and temperature on the reproductive diapause in a population collected from Changsha, Hunan were examined. Adults showed obvious reproductive diapause, which was regulated by photoperiod and temperature. At 30~C, there was no adult diapause occurring under either long-day or short-day conditions; at 25~C the pre-oviposition period was short and fecundity was high in adult females under L ： D 16 ： 8 h, whereas under L ： D 12 ： 12 h, a few females entered reproductive diapause; at 20~C under short-day conditions, all female adults entered diapause. The pre-oviposition period was significantly prolonged when the pupae and adults were transferred from long-days to short-days, but the day length influence was not obvious when they were transferred only in the adult stage. However, the fecundity dropped greatly no matter whether the photoperiod shifted to short-days only in the adult stage or whether the shift occurred in both the pupal and adult stage. The fecundity was extremely low when photoperiod shifted from long-days to short-days in both pupal and adult stages. This was an indication that the pupal and adult stages were the photoperiod-sensitive stage for adult reproductive diapause. This was especially true for the photoperiod in the pupal stage, which has a distinctly significant regulative effect on reproductive diapause. Additionally, this article also addresses the reason for different photoperiodic response patterns in reproductive diapause induction between the Changsha strain and the Tsukuba strain （Japan） of O. communa.

关键词： Ophraella communa photoperiod reproductive diapause temperature

A Facile and Environment-friendly Method for Fabrication of Polymer Brush

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Chinese Journal of Polymer Science 2017年第7期35卷 857-865页

作者： Xiao-min Kang wan-hao Cai Hong-gang Gu Shi-yuan Liu 崔树勋 Key Laboratory of Advanced Technologies of Materiais Ministry of Education Southwest Jiaotong University Chengdu 610031 China State Key Laboratory of Digital Manufacturing Equipment and Technology Huazhong University of Science and Technology Wuhan 430074 China

A novel environment-friendly system is proposed to fabricate polymer brush, which has the advantages including non-toxic and inexpensive initiator （eosin Y）, visible-light exposure （λ = 515 nm）, water medium and ambient environment. The experimental results from UV-Vis spectroscopy, AFM-based single molecule force spectroscopy （SMFS） and other measurements indicate that a polymer brush with a living nature is fabricated via free radical polymerization. This polymer brush may find applications in coatings, bio-interfaces and so forth.

关键词： Polymer brush Green chemistry Free radical polymerization Living polymerization

3D microgroove electrical impedance sensing to examine 3D cell cultures for antineoplastic drug assessment

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Microsystems & Nanoengineering 2020年第1期6卷 1199-1208页

作者： Yuxiang Pan Deming Jiang Chenlei Gu Yong Qiu hao wan Ping wang Biosensor National Special Laboratory Key Laboratory for Biomedical Engineering of Education MinistryDepartment of Biomedical EngineeringZhejiang UniversityHangzhou 310027China State Key Laboratory of Transducer Technology Chinese Academy of SciencesShanghai 200050China

In recent decades,three-dimensional(3D)cancer cell models have attracted increasing interest in the field of drug screening due to their significant advantages in more accurate simulations of heterogeneous tumor behavior in vivo compared to two-dimensional ***,drug sensitivity testing based on 3D cancer cell models can provide more reliable in vivo efficacy *** gold standard fluorescence staining is hard to achieve real-time and label-free viability monitoring in 3D cancer cell *** this study,a microgroove impedance sensor(MGIS)was specially developed for the dynamic and noninvasive monitoring of 3D cell viability.3D cancer cells were trapped in microgrooves with gold electrodes on opposite walls for in situ impedance *** change in the number of live cells caused inversely proportional changes to the impedance magnitude of the entire cell/Matrigel construct and reflected the proliferation and apoptosis of the 3D *** was confirmed that the 3D cell viability detected by the MGIS was highly consistent with the standard live/dead staining by confocal microscope ***,the accuracy of the MGIS was validated quantitatively using a 3D lung cancer model and sophisticated drug sensitivity *** addition,the parameters of the MGIS in the measurement experiments were optimized in detail using simulations and experimental *** results demonstrated that the MGIS coupled with 3D cell culture would be a promising platform to improve the efficiency and accuracy of cell-based anticancer drug screening in vitro.

关键词： impedance walls electrical

Advanced Process Control Technology Implementation in Ammonia Plant

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Advanced Process Control Technology Implementation in Ammoni...

Pt-based intermetallic compound catalysts for the oxygen reduction reaction:From problems to recent developments

第25届中国控制与决策会议

作者： HE Ren-Chu wan hao GU Xiao-Jing School of Mechatronics Engineering and Automation Shanghai University School of Environment and Chemical Engineering Shanghai University

ISBN: (纸本)9781467355339

As a typical multivariable system, ammonia synthesis process is a very complicated system and these variables are connected seriously. Traditional control forms like PID are very difficult to realize its ideal control performance. This paper discusses the application of the plant-wide advanced process control and control strategy design for complete chemical plants. Six MVC controllers have been designed for the ammonia synthesis process. The necessity and feasibility of the control system building are analysed. The final industrial application result in good control performance and economic benefit.

关键词： Multivariable Advanced process control Ammonia Process Control

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Journal of Energy Chemistry 2024年第12期99卷 302-324页

作者： Heyuan Tian Xian wang Jiawei Ge hao wan Wei Ma Guanqun Xie Junjie Ge School of Environment and Civil Engineering Dongguan University of TechnologyDongguan 523808GuangdongChina School of Chemistry and Materials Science Key Laboratory of Precision and Intelligent ChemistryUniversity of Science and Technology of ChinaHefei 230026AnhuiChina State Grid Anhui Electric Power Research Institute Hefei 230601AnhuiChina

Proton exchange membrane fuel cells(PEMFCs)are promising next-generation energy conversion devices with advantages including high energy conversion efficiency,low noise,and environmental *** the PEMFC cathode,the oxygen reduction reaction(ORR)relies heavily on Pt-based catalysts,where PtM_(x)(M stands for transition metal)intermetallic compounds(IMCs)are considered the best choice to enhance the catalytic ***,problems such as inadequate catalytic activity,high cost,and insufficient durability,*** hamper its *** optimizations of the catalyst structure,the improvements in the preparation process,and the understanding of the reaction mechanism are of great *** developments of cathodic oxygen reduction catalysts for PEMFCs will also focus on improving the catalytic activity of intermetallic compound nanoparticles,the utilization rate,and the durability of *** the particle size and particle/carrier interaction remain key issues for future *** catalyst reaction mechanism,the surface changes of the nanoparticles of Pt(111)face before and after the catalytic reaction,and the targeted regulation of the adsorption strength between the IMCs and oxygen-containing intermediates adjusted by transition metals need to be investigated more specifically and *** the application level,the expression of catalyst properties in the catalyst membrane electrode and reactor are the keys to the performance of ***,researches on PEMFCs are still systematic *** paper summarized the recent process toward the optimization of catalyst preparation,the exploration of new catalysts,and the new understanding of the *** the reference to the development of PEMFCs,future research can start from the existing problems,solve the shortcomings of the catalyst,and promote the practical application of PEMFCs.

关键词： Oxygen reduction reaction Platinum PEMFCs Intermetallic compound

Unusual roles of ceria as the support of a single-atom catalyst in hydroisomerization of n-heptane:Phase boundary acts as transport channels between different active centers

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Journal of Rare Earths 2025年第2期43卷 276-283页

作者： hao Qin Hui wan Guofeng Guan State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical EngineeringJiangsu National Synergetic Innovation Center for Advanced MaterialsNanjing Tech University

Hydroisomerization of n-alkanes plays an important role in fuel and lubricants *** catalysts with ultralow platinum loading have recently been reported successively for ***,the catalysts were prepared successfully with different methods to improve the catalytic *** conversion of 0.01%Pt1@CeOx/SAPO-11 prepared by co-calcination method（0.01%Pt1@CS-c） is 71.4%,25% higher than the other prepared by precipitation *** turnover frequency per active surface platinum site（TOFPt） of 0.01%Ptl@CS-c is as high as 13115 *** by the X-ray photoelectron spectroscopy（XPS） results,the quality of phase boundary/intersurface between ceria and zeolite is found significantly *** conjunction quality of phase boundary directly affects the spillover rate of intermediate species,which further leads to an apparent activity *** addition,the possible role of ceria in the reaction is discussed,rather than just as a carrier for the active metal atoms.

关键词： Rare earths Hydroisomerization Spillover Proximity Single-atom catalysis Intermediate

Host selection by the autoparasitoid Encarsia pergandiella on primary （Bemisia tabacl） and secondary （Eretmocerus mundus） hosts

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Insect Science 2015年第6期22卷 793-802页

作者： Yi-Bo Zhang Cristina Castane Rosa Gabarra Ramon Albajes Fang-hao wan Sustainable Plant Protection Department Institute for Research and Technology in Agriculture (IRTA) 08348 Cabrils Barcelona Agrotecnio Center Universitat de Lleida Rovira Roure 191 25198 Lleida Spain State Key Laboratory for Biology of Plant Diseases and Insect Pests Institute of Plant Protection Chinese Academy of Agricultural Sciences Beijing 100193 China.

In autoparasitoids, females are generally primary endoparasitoids of Hemiptera, while males are hyperparasitoids developing in or on conspecific females or other primary parasitoids. Female-host acceptance can be influenced by extrinsic and/or intrinsic factors. In this paper, we are concerned with intrinsic factors such as nutritional status, mating status, etc. We observed the behavior of Encarsia pergandiella Howard （Hymenoptera： Aphelinidae） females when parasitizing primary （3rd instar larvae ofBemisia tabaci Gen- nadius [Homoptera： Aleyrodidae]） and secondary hosts （3rd instar larvae and pupae of Eretmocerus rnundus Mercet [Hymenoptera： Aphelinidae]） for a period of 1 h. Females had different reproductive （virgin or mated younger） and physiological （fed elder or mated elder） status. Virgin females killed a large number of secondary hosts while investing a long time per host. However, they did not feed upon them. Mated females killed a lower number of secondary hosts and host feeding was observed in both consuming primary and secondary hosts. It was common to observe host examining females of all physiological statues tested repeatedly stinging the same hosts when parasitizing, killing or rejecting them. Fed elder females parasitized more B. tabaci larvae than E. mundus larvae or pupae, while investing less time on the primary host than on the secondary host. They also para- sitized more B. tabaci larvae than mated elder females, while investing less time per host. The access of females to honey allowed them to lay more eggs.

关键词： direct observation female physiological status Heteronomous hyperpara-sitoids host acceptance behavior

Analysis of key microbial community during the start-up of anaerobic ammonium oxidation process with paddy soil as inoculated sludge

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Journal of Environmental Sciences 2018年第2期30卷 317-327页

作者： Xianglong Xu Guohua Liu Yuanyuan wang Yuankai Zhang hao wan Lu Qi Hongchen wang School of Environment & Natural Resources Renmin University of China

A sequencing batch reactor（SBR）-anaerobic ammonium oxidation（anammox） system was started up with the paddy soil as inoculated sludge. The key microbial community structure in the system along with the enrichment time was investigated by using molecular biology methods（e.g., high-throughput 16 S r RNA gene sequencing and quantitative PCR）. Meanwhile,the influent and effluent water quality was continuously monitored during the whole start-up stage. The results showed that the microbial diversity decreased as the operation time initially and increased afterwards, and the microbial niches in the system were redistributed. The anammox bacterial community structure in the SBR-anammox system shifted during the enrichment, the most dominant anammox bacteria were Candidatus Jettenia. The maximum biomass of anammox bacteria achieved 1.68 × 10~9 copies/g dry sludge during the enrichment period, and the highest removal rate of TN achieved around 75%.

关键词： Anammox Paddy soil Community structure High-throughput sequencing qPCR

Recent progress in functionalized layered double hydroxides and their application in efficient electrocatalytic water oxidation

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Journal of Energy Chemistry 2019年第5期28卷 93-104页

作者： Xiaolong Deng Jinzhao Huang hao wan Fashen Chen Yifan Lin Xijin Xu Renzhi Ma Takayoshi Sasaki School of Physics and Technology University of JinanJinan 250022ShandongChina National Institute for Materials Science (NIMS) Beijing Tsinghua University University of Tokyoin the National Institutefor Research in Inorganic Materials International Center for Materials Nanoarchitectonics (WPI-MANA) National Institute for Materials Science (NIMS)Namiki 1-1Tsukubalbaraki 305-0044Japan Northwestern Polytechnical University Shanghai University Konkuk University Linyi University Beijing Jiaotong University Instituteof Solid State Physics Chinese Academy of Sciences Nanyang TechnologicalUniversity in Singapore

Layered double hydroxides (LDHs), a class of anionic clays consisting of brucite-like host layers and interlayer anions, have been widely investigated in the last decade due to their promising applications in many areas such as catalysis, ion separation and adsorption. Owing to the highly tunable compositi on and uniform distribution of metal cations in the brucite-like layers, as well as the facile exchangeability of intercalated anions, LDHs can be modified and functionalized to form various nanostructures/composites through versatile processes such as anion intercalation and exfoliation, decoration of nanoparticles, selfassembly with other two-dimensional (2D) materials, and controlled growth on conductive supports (e.g., nanowire arrays, nano tubes, 3D foams). In this article, we briefly review the recent advances on both the LDH nano structures and functionalized composites toward the applications in energy conversion, especially for water oxidation.

关键词： Layered double hydroxide Energy conversion Water splitting Functionalization