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Repellent effect of guava leaf volatiles on settlement of adults of citrus psylla, Diaphorina citri Kuwayama, on citrus

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Insect Science 2010年第1期17卷 39-45页

作者： Syed Muhammad Zaka xin-nian zeng Paul Holford George Andrew Charles Beattie Key Laboratory of Natural Pesticide and Chemical Biology of the Ministry of Education South China Agricultural University Guangzhou China Centre for Plant and Food Science University of Western Sydney Locked Bag 1797 Pennth South DC New South Wales 1797 Australia

The Asiatic citrus psyllid （Diaphorina cirri Kuwayama [Hemiptera： Sternorrhyncha： Psyllidae] is a vector ofhuanglongbing （citrus greening）, a devastating disease of citrus caused by phloem-limited bacteria. Growing guava （Psidium guajava） as an intercrop appears to be a successful means of reducing psyllid numbers within citrus orchards; however, the mechanism by which such a reduction is achieved is unknown. To determine the repellent effect of guava leaf and factors attributed to this activity, responses of adult psyllids to guava leaf and its odor were evaluated in cage tests and Y-tube olfactometer test. The results showed that guava leaf possessed a repellent effect against the adult citrus psyllids. Fewer psyllids were found on citrus leaves in the presence of guava foliage than in its absence. Young and old guava leaf showed equal repellent activity. By covering the guava shoots with net cloth, it was revealed that the repellent effect of guava leaf against adult psyllids on citrus was attributed to the volatile compounds, rather than physical factors. The olfactometer response of adult psyllids to guava leaf odor was dosage-dependent. Between guava odor and control, only 35.00%, 25.00% and 16.25% of the psyllids moved toward guava odor when presented with 5.0, 10.0 and 15.0 g of guava shoots, respectively. The olfactometer experiments also showed that both male and female psyllids responded similarly to the guava leaf odor.

关键词： Asiatic citrus psyllid huanglongbing (HLB) insect behavior Psidium guajava volatile compounds

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Octopaminergic neurons function in appetitive but not aversive olfactory learning and memory in Bactrocera dorsalis

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Insect Science 2022年第6期29卷 1747-1760页

作者： Jin-xin Yu Qian Xiang Jia-Bao Qu Yan-Min Hui Tao Lin xin-nian zeng Jia-Li Liu Guangdong Engineering Research Center for Insect Behavior Regulation College of Plant ProtectionSouth China Agricultural UniversityGuangzhouGuangdongChina College of Life Sciences Department of Biological ScienceShangrao Normal UniversityShangraoJiangxiChina

The biogenic amine octopamine(OA,invertebrate counterpart of nora-drenaline)plays critical roles in the regulation of olfactory ***,OA has been thought to mediate appetitive but not aversive learning in honeybees,fruit flies(Drosophila),and ***,this viewpoint has recently been challenged because OA activity through aβ-adrenergic-like receptor drives both appetitive and aversive ***,we explored the roles of OA neurons in olfactory learning and memory retrieval in Bactrocera *** trained flies to associate an orange odor with a sucrose reward or to associate methyl eugenol,a male lure,with N,N-diethyl-3-methyl benzoyl amide(DEET)*** then treated flies with OA receptor antagonists before appetitive or aversive conditioning and a memory retention *** of OA receptor antagonist mianserin or epinastine into the abdomen of flies led to impaired of appetitive learning and memory retention with a sucrose reward,while aversive learning and memory reten-tion with DEET punishment remained *** results suggest that the OA signaling participates in appetitive but not aversive learning and memory retrieval in *** through OA receptors.

关键词： appetitive aversive Bactrocera dorsalis learning and memory octopamine

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Formation characteristics of long-term memory in Bactrocera dorsalis

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Insect Science 2023年第3期30卷 829-843页

作者： Jin-xin Yu Yan-Min Hui Jun-Ao Xue Jia-Bao Qu Si-Quan Ling Wei Wang xin-nian zeng Jia-Li Liu Guangdong Engineering Research Center for Insect Behavior Regulation College of Plant ProtectionSouth China Agricultural UniversityGuangzhouChina Guangdong Provincial Key Laboratory of Silviculture Protectionand UtilizationGuangdong Academyof ForestryGuangzhouChina

Studies on insects have contributed significantly to a better understanding of learning and memory,which is a necessary cognitive capability for all *** the formation of memory has been studied in some model insects,more evidence is required to clarify the characteristics of memory formation,especially long-term memory(LTM),which is important for reliably storing ***,we explored this question by examining Bactrocera dorsalis,an agricultural pest with excellent learning *** the classical conditioning paradigm of the olfactory proboscis extension reflex(PER),we found that paired conditioning with multiple trials(>3)spaced with an intertrial interval(≥10 min)resulted in stable memory that lasted for at least 3 ***,even a single conditioning trial was sufficient for the formation of a 2-d *** the injection of protein inhibitors,protein-synthesis-dependent memory was confirmed to start 4 h after training,and its dependence on translation and transcription ***,the results revealed that the dependence of memory on protein translation exhibited a time-window effect(4-6 h).Our findings provide an integrated view of LTM in insects,suggesting common mechanisms in LTM formation that play a key role in the biological basis of memory.

关键词： Bactrocera dorsalis interval long-term memory protein synthesis trial

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氢退火对LPCVD生长的ZnO薄膜光学和电学性能的影响

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发光学报 2016年第12期37卷 1496-1501页

作者：李旺唐鹿杜江萍薛飞辛增念罗哲刘石勇江西科技学院协同创新中心江西南昌330098 江西科技学院管理学院江西南昌330098 浙江正泰太阳能科技有限公司浙江杭州310053

采用低压化学气相沉积(LPCVD)在玻璃衬底上制备了B掺杂ZnO(BZO)薄膜,研究了氢气气氛退火对BZO薄膜光学性能和电学性能的影响。结果表明:在氢气气氛下退火后,BZO薄膜的物相结构和透光率基本无变化,但BZO薄膜的导电能力却明显提高。Hall... 详细信息

采用低压化学气相沉积(LPCVD)在玻璃衬底上制备了B掺杂ZnO(BZO)薄膜,研究了氢气气氛退火对BZO薄膜光学性能和电学性能的影响。结果表明:在氢气气氛下退火后,BZO薄膜的物相结构和透光率基本无变化,但BZO薄膜的导电能力却明显提高。Hall测试结果表明:在氢气下退火时载流子浓度基本保持不变,但迁移率却明显提高。实验结果可为进一步提高BZO薄膜的光学电学综合性能提供借鉴。

关键词：低压化学气相沉积 ZnO薄膜光学性能载流子浓度霍尔迁移率

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Regulating crystallization and retarding oxidation in Sn-Pb perovskite via 1D cation engineering for high performance all-perovskite tandem solar cells

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Journal of Energy Chemistry 2025年第1期100卷 646-652页

作者： Ranran Liu xin Zheng Zaiwei Wang Miaomiao zeng Chunxiang Lan Shaomin Yang Shangzhi Li Awen Wang Min Li Jing Guo Xuefei Weng Yaoguang Rong Xiong Li Michael Gr?tzel Center for Mesoscopic Solar Cells Wuhan National Laboratory for Optoelectronics Huazhong University of Science and Technology Institute of Technology for Carbon Neutrality Shenzhen Institute of Advanced Technology Chinese Academy of Sciences School of Physics and Optoelectronic Engineering Hainan University Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO) Chinese Academy of Sciences School of Chemistry Chemical Engineering and Life Sciences State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology

All-perovskite tandem solar cells have the potential to surpass the theoretical efficiency limit of single junction solar cells by reducing thermalization ***,the challenges encompass the oxidation of Sn2+to Sn4+and uncontrolled crystallization kinetics in Sn-Pb perovskites,leading to nonradiative recombination and compositional heterogeneity to decrease photovoltaic efficiency and operational ***,we introduced an ionic liquid additive,1-ethyl-3-methylimidazolium iodide （EMIMI） into Sn-Pb perovskite precursor to form low-dimensional Sn-rich/pure-Sn perovskites at grain boundaries,which mitigates oxidation of Sn2+to Sn4+and regulates the film-forming dynamics of Sn/Pb-based perovskite *** optimized single-junction Sn-Pb perovskite devices incorporating EMIMI achieved a high efficiency of 22.87%.Furthermore,combined with wide-bandgap perovskite sub-cells in tandem device,we demonstrate 2-terminal all-perovskite tandem solar cells with a power conversion efficiency of 28.34%,achieving improved operational stability.

关键词： All-perovskite tandem solar cells Sn-Pb perovskite 1D Regulated crystallization Antioxidation

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Advances in genotypic antimicrobialresistance testing: a comprehensive review

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Science China Life Sciences 2025年第1期68卷 130-143页

作者： Boheng Duan Xianjun zeng Junping Peng Huan Kui College of Nanchang University Department of Imaging The Second Affiliated Hospital of Nanchang University NHC Key Laboratory of Systems Biology of Pathogens National Institute of Pathogen BiologyChinese Academy of Medical Sciences & Peking Union Medical College Key Laboratory of Respiratory Disease Pathogenomics Chinese Academy of Medical Sciences & Peking Union Medical College Key Laboratory of Pathogen Infection Prevention and Control (Ministry of Education) State Key Laboratory of Respiratory Health and MultimorbidityNational Institute of Pathogen BiologyChinese Academy of Medical Sciences & Peking Union Medical College

Antimicrobial resistance(AMR) represents a substantial threat to global public health, complicating the treatment of common infections and leading to prolonged illness and escalated healthcare expenses. To effectively combat AMR, timely and accurate detection is crucial for AMR surveillance and individual-based therapy. Phenotypic antibiotic resistance testing(AST) has long been considered the gold standard in clinical applications, serving as the foundation for clinical AMR diagnosis and optimized therapy. It has significantly contributed to ensuring patients′ health and the development of novel antimicrobials. Despite advancements in automated culture-based AST technologies,inherent limitations impede the widespread use of phenotypic AST in AMR surveillance. Genotypic AST technologies offer a promising alternative option, exhibiting advantages of rapidity, high sensitivity, and specificity. With the continuous advancement and expanding applications of genotypic AST technologies, such as microfluidics, mass spectrometry, and high-resolution melting curve analysis, new vigor has been injected into the development and clinical implementation of genotypic AST technologies. In this narrative review, we discuss the principles, applications, and advancements of emerging genotypic AST methods in clinical settings. The comprehensive review aims to highlight the significant scientific potential of emerging genotypic AST technologies in clinical AMR diagnosis, providing insights to enhance existing methods and explore novel approaches.

关键词： antimicrobial resistance (AMR) genotypic antibiotic resistance testing (AST) AST technologies review

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Copper-catalyzed C–H bond functionalization enabled by programmed alternating current

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Science China Chemistry 2025年第1期68卷 10-11页

作者： Zhoumei Tan Kun Xu Chengchu zeng Beijing Key Laboratory of Environmental and Viral Oncology College of Chemistry and Life Science Beijing University of Technology

Synthetic electrochemistry has been selected as one of the Top Ten Emerging Technologies in Chemistry in 2023 by International Union of Pure and Applied Chemistry (IUPAC)[1]. It has emerged as a sustainable platform for organic synthesis and has exhibited a wide range of applications from academia to industry [2]. However, electrosynthesis has been predominantly performed by using direct current (DC).

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基于现代信号处理的谱分析方法研究

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软件 2018年第3期39卷 157-159页

作者：任年新刘增力昆明理工大学信息工程与自动化学院云南昆明650051

Ensemble Empirical Mode Decomposition(集合经验模分解)是对EMD算法的改进,是一种新型的信号处理方法。本文基于EEMD提出一种新型算法EEMD-RLS,并对滤波后信号进行谱分析。结果证明:与经典的功率谱分析方法相比,本文通过滤波后的谱分... 详细信息

Ensemble Empirical Mode Decomposition(集合经验模分解)是对EMD算法的改进,是一种新型的信号处理方法。本文基于EEMD提出一种新型算法EEMD-RLS,并对滤波后信号进行谱分析。结果证明:与经典的功率谱分析方法相比,本文通过滤波后的谱分析具有更好的分辨率。

关键词：集合经验模分解递归最小二乘功率谱分析

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Experimental Study on Geometry Characteristics of Turbulent Premixed Flames for Natural Gas/Air Mixtures

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Journal of Thermal Science 2025年第1期34卷 268-282页

作者： ZHENG Weilin WANG Qijiao XIAO Huahua CHEN Xiaoxiao XIE Fan zeng Wen Liaoning Key Lab of Advanced Test Technology for Aerospace Propulsion System Shenyang Aerospace University State Key Laboratory of Fire Science University of science and Technology of China AVIC Shenyang Aircraft Design and Research Institute

In this study,focusing on the geometry characteristics of spherical expanding flame,the turbulent premixed flames of natural gas/air mixtures were investigated in a fan-stirred turbulent *** effects of initial temperature（T=300-400 K）,initial pressure（P=0.1-0.3 MPa）,turbulence intensity（u'=1.0-2.7 m/s）,oxygen volumetric percentage(φ（O2）=15%-21%) and carbon dioxide volumetric percentage(φ（CO2）=0-20%)were delved *** flame profile under the Cartesian coordinate system was derived from the schlieren images taken by the high-speed ***,from both macroscopic and microscopic perspectives,the influence of experimental conditions on the flame geometry characteristics was explored through flame front extraction,wavelet decomposition and network *** results demonstrate that for significant flame wrinkling,changes in species concentrations and turbulence intensity have more pronounced effects on the flame wrinkling *** wrinkling of the flame front maintains a certain degree of similarity,as evidenced by the locally concentrated distribution of the angles of the maximum fluctuation *** disturbance energy under large-scale（D6-D8） disturbances exhibits relatively high values with a similar trend,exerting a significant impact on the geometry characteristics of the flame *** peaks of correlation degree are scattered either with the decomposition scale or the development of flame radius,indicating no linear correlation between different detail ***,the probability distribution of node degrees in key wrinkled regions exhibits different trends with that of large-scale wrinkling and disturbance energy,especially with changes in initial *** occurs because the number of key wrinkles varies based on the perturbation's strength or the region's ***,an increase in the fluctuation frequency of the flame's local radius may not necessarily lead to an increase in the number of key folded regions.

关键词： fan-stirred turbulent combustor geometry characteristics large-scale wrinkling network topology wavelet decomposition

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Inexact proximal gradient algorithm with random reshuffling for nonsmooth optimization

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Science China(Information Sciences) 2025年第1期68卷 219-237页

作者： Xia JIANG Yanyan FANG Xianlin zeng Jian SUN Jie CHEN National Key Lab of Autonomous Intelligent Unmanned Systems School of AutomationBeijing Institute of Technology Beijing Institute of Technology Chongqing Innovation Center School of Electronic and Information Engineering Tongji University

Proximal gradient algorithms are popularly implemented to achieve convex optimization with nonsmooth regularization. Obtaining the exact solution of the proximal operator for nonsmooth regularization is challenging because errors exist in the computation of the gradient; consequently, the design and application of inexact proximal gradient algorithms have attracted considerable attention from researchers. This paper proposes computationally efficient basic and inexact proximal gradient descent algorithms with random reshuffling. The proposed stochastic algorithms take randomly reshuffled data to perform successive gradient descents and implement only one proximal operator after all data pass through. We prove the convergence results of the proposed proximal gradient algorithms under the sampling-without-replacement reshuffling *** computational errors exist in gradients and proximal operations, the proposed inexact proximal gradient algorithms can converge to an optimal solution neighborhood. Finally, we apply the proposed algorithms to compressed sensing and compare their efficiency with some popular algorithms.

关键词： proximal operator random reshuffling inexact computation compressed sensing nonsmooth optimization

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