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Evaluation of thermotherapy against huanglongbing (citrus greening) in the greenhouse

Journal of Integrative Agriculture 2016年第1期15卷 111-119页

作者： FAN Guo-cheng XIA Yu-lu LIN Xiong-jie hu Han-qing WANG Xian-da RUAN chuan-qing LU Lian-ming LIU Bo Fruit Research Institute Fujian Academy of Agricultural Sciences Fuzhou 350013 P.R. China National Science Foundation Center for Integrated Pest Management North Carolina State University Raleigh NC 27606 USA Agricultural Bio-Resources Research Institute Fujian Academy of Agricultural Sciences Fuzhou 350003 P.R. China Zhejiang Citrus Research Institute Taizhou 318020 P.R. China

huanglongbing （HLB, or citrus greening） is the most destructive disease of citrus, which is associated with Candidatus Liberibacter asiaticus （Las）. Few management options are available, aside from preventive measures such as removing infected plants, planting disease-free seedlings, and managing the insect vector. In this study, we assessed the efficacy of thermotherapy against HLB under controlled greenhouse conditions. A total of 60 two-year-old, graft-infected Citrus reticulata Blanco plants were used. The plants were randomly divided into three groups （45℃, 48℃, and untreated control）, with five plants/replicate （rep） and four reps/treatment. The treated plants were placed in phytotrons for a 4-h treatment session, repeated once per week for three consecutive weeks. Disease remission was observed eight weeks post-treatment. Real-time PCR assays revealed that Las titers in HLB-affected seedlings were significantly reduced in both 45 and 48℃ treatments four weeks after treatment, with the exception of eight plants. In contrast, Las titers in the untreated control plants increased significantly during the same period, with a maximum increase of 28-fold. Except for seven plants, Las titers in the new flushes of treated plants decreased more than 90% eight weeks after treatment. Las titers in mature leaves of treated plants decreased 56 and 60% in average at 45 and 48℃, respectively, eight weeks after treatment. The HLB symptoms and Las titer of seedings were markedly alleviated eight weeks after treatment in both 45 and 48℃ treatments. Our results laid a good foundation for the further development of citrus free-disease seedling cultivation and huanglongbing control in the field. The whole plants were replaced for scion or branch in previous as the research object in this study, and the expression of huanglongbing symptoms combined with real-time polymerase chain reaction （PCR） were used to evaluate the effect of heat treatment in the greenhouse.

关键词： Candidatus Liberibacter asiaticus Citrus reticulata thermotherapy bacterial titer

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社交媒体健康信息用户信任形成机理研究

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现代情报 2025年第1期45卷 97-111页

作者：初彦伯王萍胡姝姝吉林大学商学与管理学院吉林长春130012

[目的/意义]在公共卫生事件频发的背景下,国民对健康信息需求急剧增长。社交媒体作为用户信息获取的重要途径之一,在高效传播健康信息的同时,也为虚假健康信息的产生和传播提供便利条件。随着社交媒体渗透力和影响力不断扩大,用户对健... 详细信息

[目的/意义]在公共卫生事件频发的背景下,国民对健康信息需求急剧增长。社交媒体作为用户信息获取的重要途径之一,在高效传播健康信息的同时,也为虚假健康信息的产生和传播提供便利条件。随着社交媒体渗透力和影响力不断扩大,用户对健康信息的不确定感愈发强烈。鉴于此,本文对社交媒体健康信息用户的信任形成机理进行探索,以期为后续相关研究提供参考和借鉴。[方法/过程]解构社交媒体健康信息用户信任形成的要素,建构面向用户感知过程的信任综合框架,从用户、信息和环境3个方面提出社交媒体健康信息用户信任理论假设模型,并对结构模型进行修正。[结果/结论]研究从理论层面明晰社交媒体健康信息用户感知信任过程以及用户心理变化的进程。研究还发现热评情感极性、涉入度、信源可信度、冲突解决对信任存在显著的正向影响。信任对采纳意愿存在显著的正向影响。参照群体规范对采纳意愿存在显著的正向影响。此外,信任分别在热评情感极性、涉入度、信源可信度和冲突解决与信息采纳意愿之间起到完全中介作用。

关键词：社交媒体健康信息信任感知可信度

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Dynamic response of precast segmental bridge columns under heavy truck impact

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Frontiers of Structural and Civil Engineering 2023年第3期17卷 327-349页

作者： Yuye ZHANG Mingli hu Wei FAN daniel DIAS-da-COSTA Department of Civil Engineering Nanjing University of Science and TechnologyNanjing 210094China Research Institute of hunan University in Chongqing Chongqing 401120China Key Laboratory for Wind and Bridge Engineering of hunan Province Hunan UniversityChangsha 410082China School of Civil Engineering The University of SydneySydneyNSW 2006Australia

Considering the wide application of precast segmental bridge columns(PSBCs)in engineering practice,impact-resistant performance has gained significant ***,few studies have focused on PSBCs subjected to high-energy impacts caused by heavy truck ***,the behavior of PSBCs under a heavy truck impact was investigated in this study using high-fidelity finite element(FE)*** detailed FE modeling methods of the PSBCs and heavy trucks were validated against experimental *** validated modeling methods were employed to simulate collisions between PSBCs and heavy *** simulation results demonstrated that the engine and cargo caused two major peak impact forces during ***,the impact force,failure mode,displacement,and internal force of the PSBCs under heavy truck impacts were *** extensive study was performed to assess the influence of the section size,truck weight,impact velocity,and number of precast segments on the impact *** truck weight was found to have a minor effect on the engine impact *** was found to be localized at the bottom of the three segments,with the top remaining primarily *** parametric study demonstrated that larger cross-sections may be a preferred option to protect PSBCs against the impact of heavy trucks.

关键词： precast segmental bridge columns heavy truck collision dynamic response

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Understanding building-occupant-microbiome interactions toward healthy built environments:A review

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Frontiers of Environmental Science & Engineering 2021年第4期15卷 41-58页

作者： Shuai Li Zhiyao Yang da hu Liu Cao Qiang He Department of Civil and Environmental Engineering University of TennesseeKnoxvilleTN37996USA Institute for a Secure&Sustainable Environment University of TennesseeKnoxvilleTN37996USA Lyles School of Civil Engineering Purdue UniversityWest LafayetteIN47907USA

Built environments,occupants,and microbiomes constitute a system of ecosystems with extensive interactions that impact one *** the interactions between these systems is essential to develop strategies for effective management of the built environment and its inhabitants to enhance public health and *** studies have been conducted to characterize the microbiomes of the built *** review summarizes current progress in understanding the interactions between attributes of built environments and occupant behaviors that shape the structure and dynamics of indoor microbial *** addition,this review also discusses the challenges and future research needs in the field of microbiomes of the built environment that necessitate research beyond the basic characterization of microbiomes in order to gain an understanding of the causal mechanisms between the built environment,occupants,and microbiomes,which will provide a knowledge base for the development of transformative intervention strategies toward healthy built *** pressing need to control the transmission of SARS-CoV-2 in indoor environments highlights the urgency and significance of understanding the complex interactions between the built environment,occupants,and microbiomes,which is the focus of this review.

关键词： Microbiome Built Environment Occupant Health

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Challenges and opportunities for carbon neutrality in China’s building sector—Modelling and data

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Building Simulation 2022年第11期15卷 1899-1921页

作者： Shan hu Yang Zhang Ziyi Yang da Yan Yi Jiang Building Energy Research Center School of ArchitectureTsinghua UniversityBeijing 100084China

The building sector is one of the largest energy user and carbon emitter *** achieve China’s national carbon target,the building sector in China needs to achieve carbon peaking and neutrality targets by 2030 and 2060,***,data deficiency on building energy and emissions become barriers for tracking the status of building energy and emissions,and identify potential opportunities for achieving dual carbon *** address these shortcomings,this study established an integrated China Building Energy and Emission Model(CBEEM).With CBEEM,this study evaluated the building-construction and building-operation energy and emissions in China,and revealed the status quo and potential challenge and *** to modelling results,building operation energy use of China was 1.06 billion tce in 2020,accounting for 21%of China’s total primary energy *** construction energy consumption was 0.52 billion tce in 2020,accounting for another 10%of total primary energy *** messages found on building carbon emissions are:building construction embodied emissions were 1.5 billion tCO_(2) in 2020 and are declining slowly,building operational carbon emissions were 2.2 billion tCO_(2) in 2020 and are still *** comparisons between China and other countries on building stock,energy use intensity and carbon emission intensity were conducted as well,and help shed a light on the challenges for decarbonization of China’s building ***,technology perspectives to achieve carbon neutrality target were discussed and related policy suggestions were provided.

关键词： climate change building sector carbon neutrality global comparison China building energy and emission

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Transforming waste particles into valuable adsorbents via amyloid-mediated molecular engineering

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Science China Chemistry 2025年第01期 317-328页

作者： Qingmin Yang Jian Zhao Yujia Zhang Xingyu Zhou Hao Ren Bowen hu Zhongli Lei Lixin Chen Peng Yang School of Material and Chemical Engineering Bengbu University Anhui Provincial Engineering Laboratory of Silicon-Based Materials School of Chemistry and Chemical Engineering Northwestern Polytechnical University Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education School of Chemistry and Chemical EngineeringShaanxi Normal University Xi'an Key Laboratory of Polymeric Soft Matter School of Chemistry and Chemical Engineering Shaanxi Normal University International Joint Research Center on Functional Fiber and Soft Smart Textile School of Chemistry and Chemical EngineeringShaanxi Normal University

The high-value utilization of industrial solid waste using a facile and eco-friendly process is of great interest and significance in reducing environmental pollution and developing a green circular economy. Herein, we propose an amyloid-mediated molecular engineering strategy to transform particulate waste into valuable adsorbents for metal ions. Our method has the advantage of aqueous solution fabrication under mild conditions without the use of high-temperature hydrothermal methods and toxic chemical reagents. Amyloid-mediated molecular engineering manipulates the phase transition of bovine serum albumin(BSA)on particulate waste surfaces, resulting in a remarkable ～3.1 times improvement in the adsorption capacity of fly ash, a typical industrial solid waste for gold ions after modification with the phase-transitioned BSA(PTB). The resultant adsorption ability was 69–1,980 times higher than those of conventional and emerging adsorbent materials such as ion exchange resins, activated carbon(AC), covalent organic frameworks(COFs), and metal-organic frameworks(MOFs). We further demonstrated the application of our PTB-modified materials in the recovery of precious metals from low-grade gold ore and electronic waste leachates. Consequently, this strategy could increase the value of waste materials nearly 27 times. In addition, this method is generally extendable to other conventional industrial adsorbents such as resin, clay, and Al2O3, and enhances their adsorption capabilities at least twofold. Overall, this work provides a simple and green approach for improving the adsorption performance of solid particles, and is expected to develop into a universal strategy for transforming waste particles into high-value-added products.

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Hydrogenation Conversion of Phenanthrene over Dispersed Mo-based Catalysts

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China Petroleum Processing & Petrochemical Technology 2015年第3期17卷 7-14页

作者： hu Yiwen da Zhijian Wang Zijun SINOPEC Research Institute of Petroleum Processing

With oil-soluble molybdenum compound and sublimed sulfur serving as raw materials, two dispersed Mo-based catalysts were prepared, characterized and then applied to the hydrogenation conversion of phenanthrene. The test results showed that under the conditions specified by this study, the catalyst prepared in a higher sulfiding atmosphere was more catalytically active due to its higher content of MoS2 and stronger intrinsic catalytic activity of MoS2 unit, which demonstrated that the sulfiding atmosphere for the preparation of catalysts not only could influence the yield of MoS2 but also the structure of *** analysis on the selectivity of octahydrophenanthrene isomers revealed that the catalyst prepared in a lower sulfiding atmosphere had a relatively higher catalytic selectivity to the hydrogenation of outer aromatic ring and the structure of catalysts could be modified under the specific reaction conditions. Moreover, the selectivity between the isomers of as-octahydrophenanthrene at different reaction time and temperature was analyzed and, based on the results, a hydrogenation mechanism over dispersed Mo-based catalysts was suggested, with monatomic hydrogen transfer and catalytic surface desorption of the half-addition intermediates functioning as the key points. In addition, it is concluded that the catalyst prepared in a lower sulfiding atmosphere was more capable of adsorption than the other one.

关键词： dispersed Mo-based catalysts phenanthrene conversion MoS2 structure product selectivity hydrogenationmechanism

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Open science as a better gatekeeper for science and society: a perspective from neurolaw

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Science Bulletin 2018年第23期63卷 1529-1531页

作者： chuan-Peng hu Xiaoming Jiang Ricky Jeffrey Xi-Nian Zuo Deutsches Resilienz Zentrum (DRZ) & Neuroimaging Center (NIC) University Medical Center of the Johannes Gutenberg University Department of Psychology Tongji University Language Center International Campus Zhejiang University CAS Key Laboratory of Behavioral Science Institute of Psychology the Chinese Academy of Sciences

In 2011,a court near Milan,Italy,reduced the sentence of a convicted murderer from life to 20years in jail,after considering results from neuroimaging and genetic *** tests had been used to convince the judge that the trial's female defendant,Stefania Albertani,was suffering from partial mental illness (http:// ***/news/2011/09]italian_court_reduces_murde_s. html).The structural MRI images showed that Albertani's grey matter volume was different from the average volume of a randomly-selected group -10healthy women with no history of mental or neurological disorders -in brain areas including the anterior cingulate gyrus (ACC)and *** expert testimony concluded that "these alterations (of brain structures)have to be considered in causal relation to the psychiatric symptomatology of the murderer."

关键词： Open science society neuroimaging

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The nature of the γ-ray flare associated with blazar 3C 454.3

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Research in Astronomy and Astrophysics 2015年第9期15卷 1455-1466页

作者： Wen hu Zhong-hui Fan Ben-Zhong da Department of Astronomy Yunnan University Key Laboratory of Astroparticle Physics Yunnan Province

We have studied the simultaneous spectral energy distributions （SEDs） of the 2009 December flare and those of the quiescent state of blazar 3C 454.3 by con- structing a multi-component model We find that all six SEDs can be explained by a one-zone leptonic model involving synchrotron self-Compton （SSC） plus external Compton emission from an accretion disk （ECD） and that from a broad-line region （ECC）. X-ray emission is dominated by the SSC mechanism, and the γ-ray spectrum is well represented by a combination of ECD and ECC processes. Our results indicate that the energy density of the magnetic field and electrons decrease with distance from the central engine, and the Doppler factor increases with the blob moving outward in the development of the 2009 December flare. The increase in the observed flux density is possibly due to the increase in the Doppler factor of the blob. The relation between the Doppler factor σb and the distance from the central black hole suggests the magnetically driven jets span a sub-pc scale, and the relation between the magnetic field Bt and the dimension of the emission region R＇b is in good agreement with what is required by conservation of magnetic flux. The weak ＂harder-when-brighter＂ behavior of the γ-ray spectrum could be a result of the increase in Doppler factor during the outward motion of the blob. The parameters during the quiescent state obviously deviate from those during the flare state. We propose that the flare was likely caused by the ejection of a new blob. The gamma-ray emissions in different states are associated with the evolution of the blob.

关键词： radiation mechanisms: non-thermal -- methods: numerical -- galaxies:active -- quasars: individual (3C 454.3)

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Preparation of PMAA-coated Dysprosium Ferrite Ferrofluids and Study on the Superparamagnetism

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Chemical Research in Chinese Universities 2002年第1期18卷 30-33页

作者： Zhu chuan-zheng SHEN Qin hu Xian-luo ZHANG Jie ZHAO Hong Department of Chemistry East China Normal UniversityShanghai 200062P.R.China

The present paper covers the unprecedented preparation of stable aqueous Dy-ferrite ferrofluids, whereby colloidal Dy_ δ Fe_ 3- δ O_4 ultrafine particles were dispersed by using polymeric surfactant PMAA. The stabilities of the series of the ferrofluids were studied according to the stability indexes. The susceptibility measurements were made with a Farady-type magnetic balance at various temperatures and magnetic field intensities. In terms of Langevin function, the σ versus H/T curves showed that Dy-ferrite ferrofluids exhibited superparamagnetism behavior and the blocking temperatures were in the range from 160 to 200 K. Moreover, the ferrofluids were characterized by means of Infra-red spectroscopy, transmission electron microscopy, X-ray diffraction, and Mssbauer spectroscopy.

关键词： Dy-ferrite ferrofluid Susceptibility Superparamagnetism Stability PMAA

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