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Non-simultaneous quenching for a slow diffusion system coupled at the boundary

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Applied Mathematics(A Journal of Chinese Universities) 2012年第2期27卷 139-149页

作者： qu cheng-yuan WANG Wei ZHENG Si-ning School of Science East China Institute of TechnologyNanchang 330013China School of Mathematical Sciences Dalian University of TechnologyDalian 116024China

This paper deals with the quenching behavior of positive solutions to the Newton filtration equations coupled with boundary *** determine quenching rates for non-simultaneous quenching at first,and then establish the ... 详细信息

关键词： quenching nonsimultaneous quenching quenching set slow diffusion nonlinear boundary flux.

A note on the perturbed monomial mapping

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Applied Mathematics(A Journal of Chinese Universities) 2019年第1期34卷 76-81页

作者： qu cheng-qin ZHU Zhi-wei ZHOU Zuo-ling Department of Applied Mathematics South China University of Technology School of Mathematics and Statistics Zhaoqing University Lingnan College Sun Yat-sen University

In this paper, we present a necessary and suffcient condition that the perturbed monomial mapping is ergodic on a sphere S_(p-1)(1), which is in a combination with Anashin's earlier results about the perturbed monomial ergodic mappings on a sphere S_(p-r)(1), r > 1, completely solve a problem posed by A. Khrennikov about the ergodicity of a perturbed monomial mapping on a sphere.

关键词： perturbed monomial mapping ergodic p-adic integers

Robustness of Diversity Induced Synchronization Transition in a Delayed Small-World Neuronal Network

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Chinese Physics Letters 2011年第10期28卷 20-23页

作者： TANG Jun qu Li-cheng LUO Jin-Ming College of Science China University of Mining and TechnologyXuzhou 221000

In a diverse and delayed small-world neuronal network,we have identified the oscillatory-like synchronization transition between anti-phase and complete synchronization[***.E 83(2011)046207].Here we study the influence of the network topology and noise on the synchronization *** robustness of this transition is *** results show that:(i)the synchronization transition is robust to the neuron number N in the network;(ii)only when the coupled neighbor number k is in the region[4,10],does the synchronization transition exist;(iii)to some extent,the synchronization is destroyed by noise and the oscillatory−like synchronization transition exists for relatively weak noise(D<0.003).

关键词： transition transition Transition

A novel domain-duplicated SlitFAR3 gene involved in sex pheromone biosynthesis in Spodoptera litura

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Insect Science 2023年第3期30卷 611-624页

作者： Biyun Zhang Fengqi Li cheng qu Hongxia Duan Yuejun Fu Chen Luo Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education Institute of BiotechnologyShanxi UniversityTaiyuanChina Institute of Plant Protection Bejing Academy of Agriculture and Forestry SciencesBejingChina Innovation Centerof Pesticide Research Department of Applied ChemistryCollege of ScienceChina Agricultural UniversityBejingChina

Fatty acyl reductases(FARs)are key enzymes that participate in sex pheromone biosynthesis by reducing fatty acids to fatty *** typically harbor numerous FAR gene family *** FAR genes are involved in the biosynthesis of sex pheromones in moths,the key FAR gene of Spodoptera litura remains *** this work,we predicted 30 FAR genes from the *** genome and identified a domain duplication within gene SlitFAR3,which exhibited high and preferential expression in the sexually mature female pheromone glands(PGs)and a rhythmic expression pattern during the scotophase of sex pheromone *** molecular docking of SlitFAR3,as predicted using a 3D model,revealed a co-factor NADPH binding cavity and 2 substrate binding *** expression in yeast cells combined with comprehensive gas chromatography indicated that the SlitFAR3 gene could produce fatty alcohol *** study is the first to focus on the special phenomenon of FAR domain duplication,which will advance our understanding of biosynthesis-related genes from the perspective of evolutionary biology.

关键词： domain duplication fatty acyl reductase molecular docking SlitFAR3 Spodoptera litura yeast expression

Side-Chain Engineering of Organic Crystals for Lasing Media with Tunable Flexibility

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CCS Chemistry 2023年第10期5卷 2348-2357页

作者： Baolei Tang Shiyue Tang cheng qu Kaiqi Ye Zuolun Zhang Hongyu Zhang State Key Laboratory of Supramolecular Structure and Materials College of ChemistryJilin UniversityChangchun 130012Jilin Province

Abundant high-performance organic crystals have been reported in the past decades;however,applications of crystalline materials are seriously restricted by their notorious ***,some organic crystals have been designed to be deformable in response to stress,light,heat,or humidity;nevertheless,the development of flexible organic crystals currently relies on a molecular framework *** far there is no effective strategy for constructing organic crystals with tunable flexibility based on the same luminescent ***,we propose a side-chain engineering strategy aimed at facilely modulating the mechanical compliance of organic *** changing the side chains of a single-benzeneπ-skeleton greatly alters the mechanical behaviors while maintaining the unique optical functions of the produced *** waveguides and amplified spontaneous emissions were measured to evaluate the application potentials of the flexible crystals as soft optical transducing *** anticipate that the proposed strategy will be expanded to regulate the mechanical compliance of other organic crystals with unique emission *** addition,the applications attempted preliminarily here highlight the superiority of“crystal flexibility”in flexible optoelectronics for some special application scenarios that require complex and shape changeable optical circuits.

关键词： organic crystal elasticity plasticity emissions optical waveguides lasing

Internet Finance Fest

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China Today 2014年第4期63卷 44-46页

作者： qu cheng

RAPID development of the Internet and mobile Internetbased financing in recent years has created a spate of new-type financial institutions and *** include mobile payment,online auction companies and online wealth management ***-based financing–a blend of information network technology and modern finance–is impelling conventional finance towards

关键词：互联网巨星财经金融机构手机支付网上拍卖服务移动

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基坑地下水控制质量管理

岩土工程学报 2014年第S2期36卷 291-293页

作者：瞿成松上海长凯岩土工程有限公司上海200070

基坑地下水控制是基坑降水工程施工和周边环境安全双指标监控。针对集水明排、轻型井点、喷射井点、疏干真空井、降压管井、回灌井和止水帷幕质量要求,在基坑工程勘察、设计、施工、运行和封井等阶段,阐述地下水控制及其与地下水相关的... 详细信息

基坑地下水控制是基坑降水工程施工和周边环境安全双指标监控。针对集水明排、轻型井点、喷射井点、疏干真空井、降压管井、回灌井和止水帷幕质量要求,在基坑工程勘察、设计、施工、运行和封井等阶段,阐述地下水控制及其与地下水相关的应急预案质量管理。

关键词：地下水控制勘察设计施工运行封井

Identification and tissue distribution of odorant binding protein genes in Harmonia axyridis (Coleoptera:Coccinellidae)

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Journal of Integrative Agriculture 2021年第8期20卷 2204-2213页

作者： qu cheng WANG Ran CHE Wu-nan LI Feng-qi ZHAO Hai-peng WEI Yi-yun LUO Chen XUE Ming College of Plant Protection Shandong Agricultural UniversityTai’an 271018P.R.China Institute of Plant and Environment Protection Beijing Academy of Agriculture and Forestry SciencesBeijing 100097P.R.China Department of Pesticide Sciences Shenyang Agricultural UniversityShenyang 110866P.R.China

The olfactory system of insects is crucial in modulating behaviors such as host seeking,mating,and *** proteins(OBPs)are involved in semiochemical *** recognize and bind odorants and transport them to odorant receptors located in olfactory *** axyridis(Coleoptera:Coccinellidae)is a widely used predacious biological control agent for many agricultural and forestry *** study identified 19 OBPs in *** based on the antennal and whole-body transcriptomes of adults and obtained all the full-length open reading frames,including 11‘Classic’OBPs,7‘Minus-C’OBPs and 1‘Plus-C’*** encoded 125 to 241 amino acid proteins with molecular weights ranging from 13.75 to 27.75 kDa and isoelectric points ranging from 4.15 to *** analyses were used to study the relationships between *** OBPs and OBPs from other species of *** real-time PCR(qPCR)analysis showed that HaxyOBP2,3,5,8,10,12,13,14,and 15 were highly expressed in antennae of both adult females and ***,HaxyOBP2,3,5,12,and 15 were more abundantly expressed in antennae than other body parts,while HaxyOBP13 and HaxyOBP14 were expressed predominantly,and at similar levels,in the head and *** other OBP genes were highly expressed in non-olfactory tissues including the thorax,abdomen,legs,and *** results provide valuable information for further study of *** olfaction,which may ultimately enhance its use as a biocontrol agent.

关键词： odorant-binding proteins Harmonia axyridis expression profile phylogenetic tree

Investigating the impact of air pollution on AMI and COPD hospital admissions in the coastal city of Qingdao,China

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Frontiers of Environmental Science & Engineering 2022年第5期16卷 13-25页

作者： Jiuli Yang Mingyang Liu qu cheng Lingyue Yang Xiaohui Sun Haidong Kan Yang Liu Michelle LBell Rohini Dasan Huiwang Gao Xiaohong Yao Yang Gao Key Laboratory of Marine Environmental Science and Ecology and Frontiers Science Center for Deep Ocean Multispheres and Earth System(Ministry of Education)Ocean University of Chinaand Qingdao National Laboratory for Marine Science and TechnologyQingdao 266100China Department of Emergency Internal Medicine The Affiliated Hospital of Qingdao UniversityQingdao 266100China Division of Environmental Health Sciences School of Public HealthUniversity of CaliforniaBerkeleyBerkeleyCA 94720USA Department of Chronic Disease Prevention Qingdao Municipal Center for Disease Control&PreventionQingdao 266100China School of Public Health Key Laboratory of Public Health Safety of the Ministry of EducationFudan UniversityShanghai 200433China Department of Environmental Health Rollins School of Public HealthEmory UniversityAtlantaGA 30322USA School of the Environment Yale UniversityNew HavenCT 06511USA

Air pollution has been widely associated with adverse effects on the respiratory and cardiovascular *** investigated the relationship between acute myocardial infarction(AMI),chronic obstructive pulmonary disease(COPD)and air pollution exposure in the coastal city of Qingdao,*** pollution in this region is characterized by inland and oceanic transportation sources in addition to local *** examined the influence of PM_(2.5),PM_(10),NO_(2),SO_(2),CO and O_(3) concentrations on hospital admissions for AMI and COPD from October 1,2014,to September 30,2018,in Qingdao using a Poisson generalized additive model(GAM).We found that PM_(2.5),PM_(10),NO_(2),SO_(2) and CO exhibited a significant short-term(lag 1 day)association with AMI in the singlepollutant model among older adults(>65 years old)and females,especially during the cold season(October to March).In contrast,only NO2 and SO2 had clear cumulative lag associations with COPD admission for females and those over 65 years old at lag 01 and lag 03,*** the twopollutant model,the exposure-response relationship fitted by the two-pollutant model did not change *** findings indicated that there is an inflection point between the concentration of certain air pollutants and the hospital admissions of AMI and COPD even under the linear assumption,indicative of the benefits of reducing air pollution vary with pollution *** study has important implications for the development of policy for air pollution control in Qingdao and the public health benefits of reducing air pollution levels.

关键词： AMI COPD Air pollution exposure GAM