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EurBeST——在商业养蜂条件下测试抗螨蜜蜂的中试研究

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中国蜂业 2024年第1期75卷 29-30页

作者： r.Buechler(文/图) A.Uzunov(文/图) C.Costa(文/图) M.Meixner(文/图) Y.Le Conte(文/图) F.Mondet(文/图) M.Kovacic(文/图) S.Andonov(文/图) N.L.Carreck(文/图) L.Dimitrov(文/图) B.Basso(文/图) M.Bienkowska(文/图) r.dall’(文/图) Olio F.Hatjina(文/图) U.Wirtz(文/图) 陈超(文/图) 不详

根据官方报告,欧盟约有1600万群蜂、60万养蜂人,年生产蜂蜜价值近20亿欧元。除了直接生产蜂产品的价值外,蜜蜂还为农作物和野生植物授粉,有助于维护生物多样性和健康的农业生态系统。但是,农业生产的集约化、气候变化和全球化等导致一... 详细信息

根据官方报告,欧盟约有1600万群蜂、60万养蜂人,年生产蜂蜜价值近20亿欧元。除了直接生产蜂产品的价值外,蜜蜂还为农作物和野生植物授粉,有助于维护生物多样性和健康的农业生态系统。但是,农业生产的集约化、气候变化和全球化等导致一些蜂病的流行,给蜂群带来了巨大的压力。这其中包括寄生性的大蜂螨(Varroa destructor),如果不采取治疗措施,大多数蜂群在感染后一年内死亡。

关键词：农业生态系统大蜂螨寄生性蜂病蜂产品商业养蜂蜜蜂官方报告

2D MXenes as Co-catalysts in Photocatalysis:Synthetic Methods

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Nano-Micro Letters 2019年第4期11卷 403-424页

作者： Yuliang Sun Xing Meng Yohan dall’Agnese Chunxiang dall’Agnese Shengnan Duan Yu Gao Gang Chen Xiao-Feng Wang Key Laboratory of Physics and Technology for Advanced Batteries(Ministry of Education) College of PhysicsJilin UniversityChangchun 130012People’s Republic of China Jilin Key Engineering Laboratory of New Energy Materials and Technologies Jilin UniversityChangchun 130012People’s Republic of China A.J.Drexel Nanomaterials Institute and Department of Materials Science and Engineering Drexel UniversityPhiladelphiaPA 19104USA Institute for Materials Discovery Faculty of Maths and Physical SciencesUniversity College LondonLondon WC1E 7JEUK

Since their seminal discovery in 2011,two-dimensional(2D)transition metal carbides/nitrides known as MXenes,that constitute a large family of 2D materials,have been targeted toward various applications due to their outstanding electronic *** functioning as co-catalyst in combination with certain photocatalysts have been applied in photocatalytic systems to enhance photogenerated charge separation,suppress rapid charge recombination,and convert solar energy into chemical energy or use it in the degradation of organic *** photocatalytic performance greatly depends on the composition and morphology of the photocatalyst,which,in turn,are determined by the method of preparation ***,we review the four different synthesis methods(mechanical mixing,self-assembly,in situ decoration,and oxidation)reported for MXenes in view of their application as co-catalyst in *** addition,the working mechanism for MXenes application in photocatalysis is discussed and an outlook for future research is also provided.

关键词： MXenes Photocatalysis Co-catalyst Synthetic methods

Enhanced Photoprotection by Protein-Bound vs Free Xanthophyll Pools： A Comparative Analysis of Chlorophyll b and Xanthophyll Biosynthesis Mutants

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Molecular Plant 2010年第3期3卷 576-593页

作者： Luca dall'Osto Stefano Cazzaniga Michel Havaux roberto Bassi Dipartimento di Biotecnologie Universita di Verona Strada Le Grazie 15 37134 Verona Italy CEA IBEB SBVME Laboratoire d'Ecophysiologie Moldculaire des Plantes 13108 Saint-Paul-lez-Durance France CNrS UMR Biologie Vegetale et Microbiologie Environnementales 13108 Saint-Paul-lez-Durance France Universite Aix-Marseille 13108 Saint-Paul-lez-Durance France

When light absorbed by plants exceeds the capacity of photosynthesis, the xanthophyll violaxanthin is reversibly de-epoxidized to zeaxanthin in the so-called xanthophyll cycle. Zeaxanthin plays a key role in the protection of photosynthetic organisms against excess light, by promoting rapidly reversible （qE） and long-term （ql） quenching of excited chlorophylls, and preventing lipid oxidation. The photoprotective role of zeaxanthin, either free or bound to light-harvesting complexes （Lhcs）, has been investigated by using mutants lacking Chl b （chl） and/or specific xanthophyll species （npq, lut2）. The chl mutation causes （1） the absence of Lhcb proteins; （2） strong reduction of the feedback deexcitation （qE）; and （3） accumulation of xanthophylls as free pigments into thylakoids. Chl mutants showed extreme sensitivity to photo-oxidative stress in high light, due to higher singlet oxygen （102） release. The double mutant chlnpql was more sensitive to photo-oxidation than chl, showing that zeaxanthin does protect lipids even when free in the membrane. Nevertheless, lack of zeaxanthin had a much stronger impact on the level of lipid peroxidation in Lhcs-containing plants （WTvs npql） with respect to Lhc-less plants （chl vs chlnpql）, implying that its protective effect is enhanced by interaction with antenna proteins. It is proposed that the antioxidant capacity of zeaxanthin is empowered in the presence of PSII- LHCs-Zea complexes, while its effect on enhancement of qE only provides a minor contribution. Comparison of the sensitivity of WT vs npql plants to exogenous 102 suggests that besides the scavenging of 102, at least one additional mechanism is involved in chloroplast photoprotection.

关键词： Zeaxanthin singlet oxygen photoprotection chloroplast light-harvesting complexes.

Experimental hydrodynamic assessment of a cylindrical-type floating solar system exposed to waves

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Journal of Ocean Engineering and Science 2023年第4期8卷 461-473页

作者： dallán Friel Madjid Karimirad Trevor Whittaker John Doran School of Natural and Built Environment Queen’s University BelfastStranmillis RdBelfastAntrimNorthern IrelandUK The Bryden Centre Letterkenny Institute of TechnologyPort RdLetterkenny Co.DonegalIreland

In this paper,an experimental investigation on the wave loads and structural motions of two semi-fixed semi-immersed horizontal cylinders type rafts in the free surface zone is *** physical mod-els are tested at the 1:4.5 scale and exposed to a range of regular and irregular waves in a wave flume at Queen’s University *** physical models and experimental setup are discussed alongside an in-vestigation of the hydrodynamic phenomena,surge forces,and dynamic responses that each structure ex-hibits in the coastal wave ***,an investigation into the wave attenuation by both mod-els is carried *** results show that the surge forces have a positive correlation with wave steepness for both *** phenomena such as wave runup and overtopping,radiative damping and reflected waves,constructive interference,diffraction and flow separation were identified during the ex-periments.A negative mean heave displacement is observed during the monochromatic sea states which could result in impact loading and submergence of the superstructure components and photovoltaic pan-els at *** results presented in this paper may be used to calibrate and verify numerical models that calculate the global responses and hydrodynamic *** may also benefit the design processes of geometrically similar floating solar technologies by providing data on surge loads,motion responses and hydrodynamic observations.

关键词： Floating photovoltaics Experimental analysis Motion capture system Floating solar

Hepatitis C virus reinfection after liver transplantation: Is there a role for direct antiviral agents?

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World Journal of Gastroenterology 2014年第28期20卷 9253-9260页

作者： Marco dall’Agata Annagiulia Gramenzi Maurizio Biselli Mauro Bernardi Semeiotica Medica - Policlinico S.Orsola-Malpighi Dipartimento di Scienze Mediche e ChirurgicheUniversity of Bologna

recurrence of hepatitis C virus(HCV)infection following liver transplantation(LT)is almost universal and can accelerate graft cirrhosis in up to 30%of *** development of effective strategies to treat or prevent HCV recurrence after LT remains a major challenge,considering the shortage of donor organs and the accelerated progression of HCV in LT *** antiviral therapy with pegylated-interferon plus ribavirin is the current treatment of choice for HCV LT recipients,even though the combination is not as effective as it is in immunocompetent patients.A sustained virological response in the setting of LT improves patient and graft survival,but this is only achieved in 30%-45%of patients and the treatment is poorly *** improve the efficacy of pre-and post-transplant antiviral therapy,a new class of potent direct-acting antiviral agents (DAAs)has been *** aim of this review is to summarize the use of DAAs in LT HCV ***,Cochrane Library,MEDLINE,EMBASE,Web of Science and clinical trial databases were searched for this *** date,only three clinical studies on the topic have been published and most of the available data are in abstract *** a moderately successful early virological response has been reported,DAA treatment regimens were associated with severe toxicity mitigating their potential ***,the ongoing nature of data,the lack of randomized studies,the small number of enrolled patients and the heterogeneity of these studies make the results largely anecdotal and *** conclusion,large welldesigned clinical studies on DAAs in HCV LT patients are required before these drugs can be recommended after transplantation.

关键词： Hepatitis C virus Liver transplantation Direct antiviral agents Peginterferon/ribavirin Immunosuppressive agents

Spray-coated SnO_(2) electron transport layer with high uniformity for planar perovskite solar cells

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Frontiers of Chemical Science and Engineering 2021年第1期15卷 180-186页

作者： Yaqin Wang Lin Yang Chunxiang dall’Agnese Gang Chen Ai-Jun Li Xiao-Feng Wang Key Laboratory of Physics and Technology for Advanced Batteries(Ministry of Education) College of PhysicsJilin UniversityChangchun 130012China College of Physics Jilin UniversityChangchun 130012China

SnO_(2) has been proven to be an effective electron transport layer(ETL)material for perovskite solar cells(PSCs)owing to its excellent electrical and optical ***,we introduce a viable spray coating method for the preparation of SnO2 ***,we employ a SnO_(2) film prepared using the spray coating method as an ETL for *** PSC based on the spray-coated SnO_(2) ETL achieves a power conversion efficiency of 17.78%,which is comparable to that of PSCs based on conventional spin-coated SnO_(2) *** large-area SnO_(2) films prepared by spray coating exhibit good repeatability for device *** study shows that SnO_(2) films prepared by spray coating can be applied as ETLs for stable and high-efficiency *** the proposed method involves low material consumption,it enables the low-cost and large-scale production of PSCs.

关键词： spray coating SnO_(2)film ETL PSCs

Supramolecular assembly of chloroplast NADH dehydrogenase-like complex with photosystem Ⅰfrom Arabidopsis thaliana

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Molecular Plant 2022年第3期15卷 454-467页

作者： Xiaodong Su Duanfang Cao Xiaowei Pan Lifang Shi Zhenfeng Liu Luca dall’Osto roberto Bassi Xinzheng Zhang Mei Li National Laboratory of Biomacromolecules CAS Center for Excellence in BiomacromoleculesInstitute of BiophysicsChinese Academy of SciencesBeijing 100101P.R.China University of Chinese Academy of Sciences Beijing 100049P.R.China College of Life Science Capital Normal UniversityBeijing 100101P.R.China Dipartimento di Biotecnologie Universitàdi Verona37134 VeronaItaly Center for Biological Imaging CAS Center for Excellence in BiomacromoleculesInstitute of BiophysicsChinese Academy of SciencesBeijing 100101P.R.China

Cyclic electron transport/flow(CET/CEF)in chloroplasts is a regulatory process essential for the optimization of plant photosynthetic efficiency.A crucial CEF pathway is catalyzed by a membrane-embedded NADH dehydrogenase-like(NDH)complex that contains at least 29 protein subunits and associates with photosystem I(PSI)to form the NDH-PSI ***,we report the 3.9Åresolution structure of the Arabidopsis thaliana NDH-PSI(AtNDH-PSI)*** constructed structural models for 26 AtNDH subunits,among which 11 are unique to chloroplasts and stabilize the core part of the NDH *** the supercomplex,one NDH can bind up to two PSI-light-harvesting complex I(PSI-LHCI)complexes at both sides of its membrane *** minor LHCIs,Lhca5 and Lhca6,each present in one PSI-LHCI,interact with NDH and contribute to supercomplex formation and ***,our study reveals the structural details of the AtNDH-PSI supercomplex assembly and provides a molecular basis for further investigation of the regulatory mechanism of CEF in plants.

关键词： cyclic electron transport/flow NADH dehydrogenase-like(NDH)complex photosystem I structure Arabidopsis thaliana

Pipeline wax deposition modeling:A sensitivity study on two commercial software

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Petroleum 2019年第2期5卷 206-213页

作者： Giancarlo Giacchetta Barbara Marchetti Mariella Leporini Alessandro Terenzi Davide dall’Acqua Laura Capece roberta Cocci Grifoni Dipartimento di Ingegneria Industriale e Scienze Matematiche(DIISM) Universita Politecnica della Marchevia Brecce BiancheAnconaItaly Facolta di Ingegneria Universita degli Studi E-Campusvia Isimbardi 1022060 NovedrateCO.Italy Saipem S.p.A. via Toniolo 161032FanoPUItaly School of Architecture and Design Universita di CamerinoCamerinoMCItaly

This paper presents the results of a sensitivity study carried out to investigate the performances of two commercial codes,OLGA and LedaFlow,used to model the wax deposition process in pipelines under multiphase *** simulations of the phenomenon are essential to properly design pipelines and to adopt cost-effective strategies for prevention and removal of wax deposits,reducing the risks of *** main limit of the available models is that their predictions depend on a number of parameters which are usually adjusted to fit the experimental data obtained from laboratory deposition *** a reliable upscale criterion has not been developed yet,model predictions have been more suitably validated using real field data,reported in *** performances of the commercial codes in modelling wax precipitation and deposition have been compared to each other.

关键词： properly prevention limit

SUMOylation regulates p27^(Kip1) stability and localization in response to TGFβ

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分子细胞生物学报:英文版 2016年第1期8卷 17-30页

作者： Sara Lovisa Simona Citro Maura Sonego Alessandra dall’Acqua Valentina ranzuglia Stefania Berton Alfonso Colombatti Barbara Belletti Susanna Chiocca Monica Schiappacassi Gustavo Baldassarre Division of Experimental Oncology 2 Centro di riferimento Oncologico National Cancer InstituteAviano 33081Italy Department of Experimental Oncology European Institute of Oncology at the IFOM-IEO CampusMilan 20139Italy Department of Scienze e Tecnologie Biomediche MATI Center of ExcellenceUniversity of UdineUdine 33010Italy Present address:Department of Cancer Biology Metastasis Research CenterThe University of Texas MD Anderson Cancer CenterHoustonTX 77030USA.

Exposure of normal and tumor-derived cells to TGFbresults in different outcomes,depending on the regulation of key *** CDK inhibitor p27^(Kip1) is one of these TGFβ targets and is essential for the TGFβ-induced cell cycle *** treatment inhibits p27^(Kip1) degradation and induces its nuclear translocation,through mechanisms that are still *** evidences suggest that SUMOylation,a post-translational modification able to modulate the stability and subcellular localization of target proteins,critically modifies members of the TGFβ signaling ***,we demonstrate that p27^(Kip1) is SUMOylated in response to TGFβ *** different p27^(Kip1) point mutants,we identified lysine 134(K134)as the residue modified by small ubiquitin-like modifier 1(SUMO1)in response to TGFb ***β-induced K134 SUMOylation increased protein stability and nuclear localization of both endogenous and exogenously expressed p27^(Kip1).We observed thatSUMOylation regulated p27^(Kip1) binding to CDK2,thereby governing its nuclear proteasomal degradation through the phosphorylation of threonine ***,p27^(Kip1) SUMOylation was necessary for proper cell cycle exit following *** data indicate thatSUMOylation is a novel regulatory mechanism that modulates p27^(Kip1) function in response to TGFβ *** the involvement of TGFb signaling in cancer cell proliferation and invasion,our data may shed light on an important aspect of this pathway during tumor progression.

关键词： p^(27kip1) SUMOylation TGFβ