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Moth sex pheromones affect interspecific competition among sympatric species and possibly population distribution by modulating pre-mating behavior

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Insect Science 2023年第2期30卷 501-516页

作者： Jianjun cheng Qinghua Chen Qianshuang Guo Yongjun Du Ministry of Agriculture Key Lab of Molecular Biology of Crop Pathogens and Insects Key Laboratory of Biology of Crop Pathogens and Insects of Zhejiang ProvinceZhejiang UniversityHangzhouChina Institute of Plant Protection Sichuan Academy of Agricultural Sciences/Key Laboratory of Integrated Pest Management on Crops in SouthwestMinistry of AgricultureChengduChina

Premating behaviors mediated by pheromones play pivotal roles in animal mating choices.In natural populations of the striped stem borer Chilo suppressalis and the rice leaf roller Cnaphalocrocis medinalis in the rice field habitat,we discovered that Z11-16:Ald,a major component of the C.suppressalis pheromone,modulated the premating behavior of C.medinalis.Z11-16:Ald evoked a strong olfactory response in male antennae and strongly inhibited the sex pheromone trapping of male C.medinalis in the field.The functions of three C.medinalis sex pheromone receptor genes(CmedPR1–3)were verified through heterologous expression in Xenopus oocytes.CmedPR1 responded to Z11-18:OH and Z11-18:Ald,as well as the interspecific pheromone compound Z11-16:Ac of sympatric species;CmedPR2 responded to Z13-18:OH and Z13-18:Ald,as well as the sex pheromone compounds Z11-16:Ald and Z9-16:Ald of sympatric species;and CmedPR3 responded to Z11-18:OH and Z13-18:OH,as well as the interspecific pheromones Z11-16:OH,Z9-16:Ald,Z11-16:Ac,and Z11-16:Ald of sympatric species.Thus,CmedPR2 and CmedPR3 share the ligand Z11-16:Ald,which is not a component of the C.medinalis sex pheromone.Therefore,the sex pheromones of interspecific species affected the input of neural signals by stimulating the sex pheromone receptors on the antennae of male C.medinalis moths,thereby inhibiting the olfactory responses of the male moths to the sex pheromones.Our results demonstrate chemical communication among sympatric species in the rice field habitat,the recognition of intra-and interspecific sex pheromones by olfactory receptors,and how insect premating behaviors are modulated to possibly affect resource partitioning.

关键词： Chilo suppressalis Cnaphalocrocis medinalis premating sex pheromone sex pheromone receptors two-electrode voltage-clamp

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Tensor products of tilting modules

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Frontiers of Mathematics in China 2017年第1期12卷 51-62页

作者： Meixiang chen Qinghua Chen School of Mathematics Putian University Putian 351100 China School of Mathematics and Computer Science Fujian Normal University Fuzhou 350007 China

我们考虑倾斜的 A 模块 T 和倾斜的 B 模块 T 的倾斜的性质是否能传送到他们的张肌产品 T T：主要结果是 T T 结果是一(n + m ) 倾斜 B 模块，在 T 是倾斜 m 的地方， A 模块和 T 是倾斜 n B 模块。

关键词：张量积倾斜模 tilting模

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Research Progress in Lithium-Excess Disordered Rock-Salt Oxides Cathode

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Energy & Environmental Materials 2022年第4期5卷 1139-1154页

作者： Manxi Wang Xiaochuan chen Hurong Yao Ganggang Lin Jinhyuk Lee Yuming chen Qinghua Chen College of Environmental Science and Engineering and College of Physics and Energy Fujian Normal UniversityFuzhou 350000China School of Chemistry Sun Yat-sen UniversityGuangzhou 510275China State Grid Fujian EHV Company Fuzhou 350000China Department of Mining and Materials Engineering McGill UniversityMontrealQC H3A 0C5Canada

The increasing demand for new energy sources has promoted the improvement of the energy storage capacity of lithium-ion batteries(LIBs)that urged the development of higher energy density cathode materials.The enhancement of the classical cathode in the last 30 years has reached a bottleneck,and then the discovery of the lithium-excess disordered materials has greatly expanded the research space of the cathode materials.Compared with the conventional layered oxides,the lithium-excess disordered rock-salt oxides(LEDRXs)with a more stable structure has higher extractable Li^(+)content,even though the inactive high-valent transition metals(TMs)were needed to compensate for the excess Li,which would reduce the total TM redox content.In addition,oxygen redox provides additional electron capacity for the materials,which also causes O loss and results in the subsequent poor cycle performance.Herein,a series of studies about LEDRXs and their targeted modification measures are summarized,including the prospect of the materials,in order to provide ideas for the design of highperformance LEDRXs.Finally,the new discoveries and outlook on future research directions of LEDRX cathode materials for LIBs with higher energy density are given.

关键词： disordered rock-salt oxides lithium-excess lithium-ion batteries

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Early Warning Interventions for Environmental Risk Factors at China CDC

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China CDC weekly 2023年第29期5卷 651-654页

作者： qinghua Sun chen chen Qing Wang Tiantian Li China CDC Key Laboratory of Environment and Population Health National Institute of Environmental HealthChinese Center for Disease Control and PreventionBeijingChina

BACKGROUND President Xi Jinping emphasized the paramount importance of bolstering early surveillance and early warning capacities within a robust public health system(1).These elements constitute one of the five major functionalities of the National Bureau of Disease Control and Prevention(2).As an integral division of the National Bureau of Disease Control and Prevention,the Center for Disease Control and Prevention(CDC)is responsible for executing early surveillance and warning procedures in the realm of public health.Nonetheless,a deficiency persists concerning the early warning of public health risk factors.

关键词： concerning warning CDC

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An approach for simulating the air brake system of long freight trains based on fluid dynamics

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Railway Engineering Science 2023年第2期31卷 122-134页

作者： Xin Ge Qinghua Chen Liang Ling Wanming Zhai Kaiyun Wang State Key Laboratory of Traction Power Southwest JiaotongUniversityChengdu 610031China School of Mechatronic Engineering Lanzhou JiaotongUniversityLanzhou 730070China

Air brake systems are critical equipment for railway trains, which affects the running safety of the trains significantly. To study air braking characteristics of long freight trains, an approach for simulating air brake systems based on fuid dynamics theory was proposed. The structures and working mechanisms of locomotive and wagon air brakes are introduced, and mathematical models of the pipes, brake valves, reservoirs or chambers, cylinders, etc., are presented.Besides, the dynamic motions of parts in the main valve are considered. The simulation model of the whole air brake system is then formulated, and the solving method based on the finite-difference method is used. New efficient pipe boundary conditions without iterations are developed for brake pipes and branch pipes, which can achieve higher computational efficiency. The proposed approach for simulating the air brake system is validated by comparing with published measured data. Simulation results of different train formations indicate that models that consider the dynamic behavior of brake pipes are recommended for predicting the characteristics of long trains under service braking conditions.

关键词： Air brake system Fluid dynamics Railway train Boundary condition Simulation

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Comparative transcriptomic analysis of Macro brachium nippon ense in response to Aerom onas veronii or Staphylococcus au reus infection

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Journal of Oceanology and Limnology 2022年第1期40卷 347-359页

作者： Chong HAN Zhipeng ZHANG Qiang LI Qinghua Chen Jianrong HUANG State Key Laboratory of Biocontrol Institute of Aquatic Economic Animals and Guangdong Provincial Key Laboratory for Aquatic Economic AnimalsSchool of life SciencesSun Yat-Sen UniversityGuangzhou 510275China Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai) Zhuhai 519082China School of life Sciences Guangzhou UniversityGuangzhou 510006China South China Institute of Environmental Science MEEGuangzhou 510610China

Macrobrachium nipponense is an economically important freshwater prawn that is often threatened by many aquatic pathogens.In this study,comparative transcriptomic analysis was fi rstly used to explore the transcriptional response of M.nipponense to Aeromonas veronii or Staphylococcus aureus stimulation.A total of 400.19 million clean reads were obtained and assembled into 56944 unigenes with an average length of 1253 bp.A total of 1857 diff erentially expressed genes were found after A.veronii infection,including 677 genes that were up-regulated and 1180 genes that were down-regulated,while 1061 signifi cant diff erentially expressed genes were identifi ed after S.aureus infection,including 390 up-regulated and 671 down-regulated genes.Many immune-related genes including Spaetzle,prophenoloxidase activating factor,C-type lectin,anti-lipopolysaccharide factor,and inhibitor of apoptosis 2 protein were commonly up-regulated after A.veronii or S.aureus infection.This study will enrich our understanding of the immune response to gram-positive and gram-negative bacteria infection in crustaceans.

关键词： Macrobrachium nipponense differentially expressed genes Aeromonas veronii Staphylococcus aureus immune response

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Ultrathin Zn-free anode based on Ti_(3)C_(2)T_(x) and nanocellulose enabling high-durability aqueous hybrid Zn-Na battery with Zn2+/Na+co-intercalation mechanism

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Nano Research 2023年第1期16卷 536-544页

作者： Hao chen Weijun Zhou Minfeng chen qinghua Tian Xiang Han Jizhang chen College of Materials Science and Engineering Nanjing Forestry UniversityNanjing 210037China Key Laboratory of Surface&Interface Science of Polymer Materials of Zhejiang Province Department of ChemistryZhejiang Sci-Tech UniversityHangzhou 310018China Co-Innovation Center of Efficient Processing and Utilization of Forest Resources Nanjing Forestry UniversityNanjing 210037China

With low cost and high safety,aqueous zinc-based batteries have received considerable interest.Nevertheless,the excess utilization of zinc metal in the anodes of these batteries reduces energy density and increases costs.Herein,an ultrathin electrode of approximately 6.2μm thick is constructed by coating Ti_(3)C_(2)T_(x)/nanocellulose hybrid onto a stainless steel foil.This electrode is used as the Zn-free anode for aqueous hybrid Zn-Na battery,in which,a concentrated electrolyte is used to improve electrochemical reversibility.The Ti_(3)C_(2)T_(x)/nanocellulose coating is found to improve the electrolyte wettability,facilitate desolvation process of hydrated Zn^(2+) ions,lower nucleation overpotential,improve zinc plating kinetics,guide horizontal zinc plating along the Zn(002)facet,and inhibit parasitic side reactions.It is also found that the Na_(3)V_(2)(PO_(4))_(3) cathode material adopts a highly reversible Zn^(2+)/Na^(+)co-intercalation charge storage mechanism in this system.Thanks to these benefits,the assembled hybrid Zn-Na battery exhibits excellent rate capability,superior cyclability,and good anti-freezing ability.This work provides a new concept of electrode design for electrochemical energy storage.

关键词： MXene-based composites ultrathin electrodes electrode surface coatings aqueous hybrid batteries co-intercalation charge storage mechanisms

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N-doped CoAl oxides from hydrotalcites with enhanced oxygen vacancies for excellent low-temperature propane oxidation

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Journal of Environmental Sciences 2022年第6期34卷 79-89页

作者： Enhui Wu Daifeng Lin Yinye chen Xiaoshan Feng Kui Niu Yongjin Luo Baoquan Huang Jianbin Qiu Qingrong Qian Qinghua Chen Fujian Key Laboratory of Pollution Control&Resource Reuse Fujian Normal UniversityFuzhou 350007China College of Environmental Science and Engineering Fujian Normal UniversityFuzhou 350007China

A series of nitrogen-doped CoAlO(N-CoAlO)were constructed by a hydrothermal route combined with a controllable NH_(3) treatment strategy.The effects of NH_(3) treatment on the physico-chemical properties and oxidation activities of N-Co AlO catalysts were investigated.In comparison to CoAlO,a smallest content decrease in surface Co^(3+)(serving as active sites)while a largest increased amount of surface Co^(2+)(contributing to oxygen species)are obtained over N-Co AlO/4h among the N-CoAlO catalysts.Meanwhile,a maximum N doping is found over N-CoAlO/4h.As a result,N-CoAlO/4h(under NH_(3) treatment at 400℃ for 4 hr)with rich oxygen vacancies shows optimal catalytic activity,with a T90(the temperature required to reach a 90% conversion of propane)at 266℃.The more oxygen vacancies are caused by the co-operative effects of N doping and suitable reduction of Co^(3+) for NCoAlO/4h,leading to an enhanced oxygen mobility,which in turn promotes C_(3)H_(8) total oxidation activity dominated by Langmuir-Hinshelwood mechanism.Moreover,in situ diffuse reflectance infrared Fourier transform spectroscopy(DRIFTs)analysis shows that N doping facilities the decomposition of intermediate species(propylene and formate)into CO_(2)over the catalyst surface of N-CoAlO/4h more easily.Our reported design in this work will provide a promising way to develop abundant oxygen vacancies of Co-based catalysts derived from hydrotalcites by a simple NH_(3) treatment.

关键词： Hydrotalcite derived oxides Propane oxidation N doping Co species Oxygen vacancies

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Enzymology properties of two different xylanases and their impacts on growth performance and intestinal microflora of weaned piglets

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Animal Nutrition 2016年第1期2卷 18-23页

作者： Qinghua Chen Mengwei Li Xiong Wang College of Animal Science and Technology Hunan Agricultural University

The enzyme xylanase is more and more widely used in feed production, but different xylanase have different properties, mechanism and application effects. To provide a theoretical basis for choosing more suitable xylanase in feed production, we selected bacterial xylanase(BX), labeled enzyme A, and trichoderma xylanase(TX), labeled enzyme B, and studied the enzymology properties and application effects on growth performance and gut flora in weaned piglets. The results showed that the activity levels of both appear parabolic along with increasing pH or temperature, but the amplitude of enzyme activity changing curves and the pH/temperature of optimal activity level are different, where enzyme A has the optimal activity level at 50 ℃ with a pH value of 5.0. The optimal activity level of enzyme B was achieved at 70 ℃ with a pH around 6.0. Enzyme B suffered very little activity loss with moisture level at16% and temperature from 80℃ to 90 ℃. Enzyme A suffered a big drop in activity level when processed with high temperature from around 80 ℃ to 90 ℃, and it was even completely inactivated at 90 ℃,Enzyme A has very low activity level after being processed in acid environment, but enzyme B has minor changes in activity level with respect to changes in acid level, indicating significantly different enzymatic properties between the two different sources of xylanases. In feeding experiment, the control group, was fed the basal diet, and the BX group and TX group were fed basal diets supplemented with 0,01% bacterial and fungal xylanases, respectively. The results showed that ADG of the BX group and TX group increased by 3.25%(P> 0.05) and 8.22%(P 0.05), respectively compared with the control group; TX group had significantly higher(P < 0.05) ADG compared with BX group; BX group and TX group had significantly lower ileum Escherichia coli level than the control group, which were reduced by up to 12.98%(P < 0.05) and 11.68%(P < 0.05), respect

关键词： Xylanase Enzymology characteristics Weaned piglet Growth performance Microbial flora

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Antioxidant mechanism of tea polyphenols and its impact on health benefits

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Animal Nutrition 2020年第2期6卷 115-123页

作者： Zhaoming Yan Yinzhao Zhong Yehui Duan Qinghua Chen Fengna Li College of Animal Science and Technology Hunan Agricultural UniversityChangsha 410128China Laboratory of Animal Nutritional Physiology and Metabolic Process Institute of Subtropical Agriculture Chinese Academy of SciencesKey Laboratory of Agro-ecological Processes in Subtropical RegionHunan Provincial Engineering Research Center for Healthy Livestock and Poultry ProductionScientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-CentralMinistry of AgricultureChangsha 410125China College of Animal Science South China Agricultural UniversityGuangzhou 510642China Hunan Co-Innovation Center of Animal Production Safety Hunan Collaborative Innovation Center for Utilization of Botanical Functional IngredientsChangsha 410128China

Tea trees have a long history of cultivation and utilization.People in many countries have the habit of drinking tea and choosing green tea,oolong tea,or black tea according to different regions and personal tastes.Tea polyphe nols are a general term for polyphenol co mpounds in tea,and has been shown to have good effects on antioxidant,anti-inflammatory,cancer prevention and regulation of lipid metabolism.Tea polyphenols have been widely used as antioxidants in disease treatment and animal husbandry,but their specific mechanism of action needs to be further clarified and revealed.This review focuses on the definition,classification,antioxidant activity and the regulation of signaling pathways of tea polyphenols.This paper also aims to examine the application of tea polyphenols in human and animal health,providing a scientific basis for this application in addition to proposing future directions for the development of this resource.

关键词： Tea polyphenols Antioxidant activities Animal production Signal transduction pathway

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