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major ascaroside pheromone component asc-C5 influences reproductive plasticity among isolates of the invasive species pinewood nematode

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Integrative Zoology 2021年第6期16卷 893-907页

作者： meiping zhao Jacob d.WICKHAm Lilin zhao Jianghua SUN State Key Laboratory of Integrated management of Pest Insects and Rodents Institute of ZoologyChinese Academy of SciencesBeijingChina CAS Center for Excellence in Biotic Interactions University of Chinese Academy of SciencesBeijingChina

Pheromones are communication chemicals and regulatory signals used by animals and represent unique tools for organisms to m.d.ate behaviors and make“decisions”to maximize their *** plasticity refers to the innate capacity of a species to tolerate a greater breadth of environmental conditions across which it adapts to improve its survival,reproduction,and *** pinewood nematode,Bursaphelenchus xylophilus,an invasive nematode species,was accidentally introduced from North America into Japan,China,and Europe;however,few studies have investigated its pheromones and phenotypic plasticity as a natural ***,we demonstrated a novel phenomenon,in which nematodes under the condition of pheromone presence triggered increased reproduction in invasive strains(JP1,JP2,CN1,CN2,EU1,and EU2),while it simultaneously decreased reproduction in native strains(US1 and US2).The bidirectional effect on fecundity,m.d.ated by presence/absence of pheromones,is henceforth term.d.pheromone-regulative reproductive plasticity(PRRP).We further found that synthetic ascaroside asc-C5(ascr#9),the major pheromone component,plays a leading role in PRRP and identified 2 candidate receptor genes,Bxydaf-38 and Bxysrd-10,involved in perceiving *** results suggest that plasticity of reproductive responses to pheromones in pinewood nematode may increase its fitness in novel environments following *** opens up a new perspective for invasion biology and presents a novel strategy of invasion,suggesting that pheromones,in addition to their traditional roles in chemical signaling,can influence the reproductive phenotype among native and invasive *** addition,this novel mechanism could broadly explain,through comparative studies of native and invasive populations of animals,a potential underlying factor behind of the success of other biological invasions.

关键词： Bursaphelenchus xylophilus fecundity invasion phenotypic plasticity pheromone

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mineralization of ^(14)C-ring Labelled 2,4-d in Egyptian Soils Under Aerobic and Anaerobic Conditions

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Biom.d.cal and Environmental Sciences 2002年第4期15卷 306-314页

作者： S．m．A．d．ZAYEd m．FARGHALY 等 NationalReserachCenter DokkiCairoEgypt

Obiectives To study the mineralization of 2,4-d in clay and clay loam Egyptian soils under subtropical conditions over a period of 90 d. methods Using 14C-ring labelled pesticide, laboratory studies under aerobic and anaerobic conditions were conducted. 14C-activity in solutions was directly determined by liquid scintillation counting. Unextractable soil residues were determined by combustion. The nature of methanolic '4C-residues was determined by thin layer and high performance liquid chromatographic analysis. Results Under aerobic conditions 10%-14% of applied dose was mineralized during 90 d irrespective of soil type. The soil extractable pesticide residues decreased with time and the bound residues gradually increased. The highest binding capacity of about 26%-29% was observed in clay soil under aerobic conditions after 90 d. A good balance sheet was obtained and the percentage recovery was generally between 91% and 100%. Conclusion The mineralization of 2,4-d in clay soil was higher than that in clay loam soil under anaerobic conditions. Under aerobic conditions, the soil type had no influence on mineralizaion capacity of 2,4-d during 90 d. The soil binding increased with time whereby the extractable 14C-residues simultaneously decreased. Chromatographic analysis of the methanol extractable l4C-residues of soils revealed the presence of 2,4-d as a main product together with 2,4-dichlorophenol.

关键词： 14C-ring labelled Organochlorine pesticide Egyptian soil Radiochemicals

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Ultraviolet 3d digital image correlation applied for deformation measurement in thermal testing with infrared quartz lamps

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Chinese Journal of Aeronautics 2020年第3期33卷 1085-1092页

作者： Yali dONG Jiaqing zhao Bing PAN Institute of Solid mechanics Beihang UniversityBeijing 100083China Institute of Nuclear and New Energy Technology Tsinghua UniversityBeijing 100084China

In thermal-structural testing of hypersonic materials and structures,deformation measurement on the front surface of an object directly heated by quartz lamps is highly necessary and very *** work describes a novel front-surface high-temperature deformation measurement technique,which adopts ultraviolet 3d digital image correlation(UV 3d-dIC)to observe and measure the high-temperature deformation fields on front surfaces directly heated by quartz *** with existing blue light dIC techniques,the established UV 3d-dIC,which combines UV CCd camera,active UV illumination and bandpass filter imaging,can effectively suppress the strong disturbing light emitted by the quartz lamps and the heated sample itself during heating *** experiments were carried out to verify the robustness and accuracy of the developed technique:(1)direct observation of front surfaces of a hypersonic thermal structure sample heated from room temperature to 1050℃,and(2)front-surface thermal stain and coefficient of thermal expansion(CTE)measurement of an Inconel 718 sample up to 800℃.The well matched strain and CTE results with literature data show that UV 3d-dIC system is an effective technique for front-surface deformation measurement and has great potential in characterizing deformation response of hypersonic materials and structures subjected to transient aerodynamic heating.

关键词： deformation dIC Front-surface Quartz lamp heating Ultraviolet 3d digital image correlation

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Brain-penetrating neurotrophic factor mimetics: HER-096 as a disease-m.d.fying therapy for Parkinson’s disease

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Neural Regeneration Research 2025年第4期20卷 1094-1095页

作者： Natalia Kulesskaya Kira m.Holmström Henri J.Huttunen Herantis Pharma Plc EspooFinland

Neurotrophic factors as a therapeutic approach in neurodegenerative diseases:A major unmet need in the field of central nervous system.d.seases is disease-m.d.fying *** for decades there have been various symptomatic treatments available to alleviate the symptoms of the disease,disease-m.d.fication,*** that stop,significantly delay,or reverse the progression of the disease,has been turned out to a difficult goal to achieve.

关键词： diseases treatment therapeutic

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Effect of layer thickness on the flexural property and microstructure of 3d-printed rhomboid polymer-reinforced cemented tailing composites

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International Journal of minerals,metallurgy and materials 2023年第2期30卷 236-249页

作者： Ziyue zhao Shuai Cao Erol Yilmaz State Key Laboratory of High-Efficient mining and Safety of metal mines of ministry of Education University of Science and Technology BeijingBeijing 100083China School of Civil and Resource Engineering University of Science and Technology BeijingBeijing 100083China department of Civil Engineering Geotechnical DivisionRecep Tayyip Erdoğan UniversityFenerRize TR53100Turkey

For mines with poor ore bodies and surrounding rocks,the general mining method does not allow the ore to be extracted from underground safely and *** these mines,the downward layered filling mining technique is undoubtedly the most suitable mining *** downward filling mining technique may eliminate the troubles relating to poor ore deposit conditions,such as production safety,ore loss rate,and depletion ***,in this technique,the safety of the artificial roof of the next stratum is of paramount *** tailings backfilling(CTB)that is not sufficiently cemented and causes collapses could threaten ore *** paper explores a diamond-shaped composite structure to mimic the stability of a glued false roof in an actual infill mine based on the recently emerged three-dimensional(3d)printing *** means such as three-point bending and digital image correlation(dIC)techniques were used to explore the flexural characteristics of 3d construction specimens and CTB combinations with different cement/tailings weight ratios at diverse layer *** results show that the 3d structure with a 14-mm ply height and CTB has strong flexural characteristics,with a maximum.d.flection value of 30.1 mm,while the 3d-printed rhomboid polymer(3d-PRP)structure with a 26-mm ply height is slightly worse in terms of flexural strength characteristics,but it has a higher maximum flexural strength of 2.83 mPa.A combination of 3d structure and CTB has more unique mechanical properties than CTB *** research work offers practical knowledge on the artificial roof performance of the downward layered filling mining technique and builds a scientific knowledge base regarding the successful application of CTB material in mines.

关键词： tailings cemented fills 3d printed rhomboidal polymer three-point bending test digital image correlation

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2d materials:a wonderland for physical science

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National Science Review 2022年第5期9卷 6-7页

作者： Yi Xie dongyuan zhao Hefei National Laboratory for Physical Sciences at microscale University of Science and Technology of China department of Chemistry State Key Laboratory of Molecular Engineering of Polymers Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials Laboratory of Advanced Materials and Collaborative Innovation Center of Chemistry for Energy Materials (iChEM) Fudan University

Two-dimensional (2d) functional materials (2dFms) are materials with 2d features and fascinating physical properties for various *** large diameter-length ratio gives them unprecedented property compared to their bulky states.A free surface state,unsaturated active site,flexible light-matter interaction and the strong quantum Hall effect make 2dFms optimal for many emerging *** the past two decades,

关键词： greenhouse gas carbon cycle climate mitigation wetland methane isotope

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Substantially Enhanced Properties of 2d WS_(2) by High Concentration of Erbium.d.ping against Tungsten Vacancy Formation

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Research 2022年第4期2022卷 333-345页

作者： Hongquan zhao Guoxing Zhang Bing Yan Bo Ning Chunxiang Wang Yang zhao Xuan Shi Chongqing Institute of Green and Inteligent Technology Chinese Academy of SciencesChina University of Chinese Academy of Sciences Bejing 100064China Chongqing University of Posts and Telecommunications Chongqing 400065China

doping in 2d materials is an important method for tuning of band *** this purpose,it is important to develop controllable doping ***,we demonstrate a substitutional doping strategy by erbium(Er)ions in the synthesis of monolayer WS2 by chemical vapor *** enhancements in photoluminescent and photoresponsive properties are achieved,which indicate a tungsten vacancy suppression mechanism by Er *** ion doping in the monolayer WS2 is proved by X-ray diffraction(XRd)and X-ray photoelectron spectra(XPS),fluorescence,absorption,excitation,and Raman spectra.11.5 at%of the maximum Er concentration is examined by energy dispersive X-ray spectroscopy(EdX).Over 6 times enhancement of intensities with 7.9 nm redshift in peaks are observed from the fluorescent spectra of Er-doped WS2 monolayers compared with their counterparts of the pristine WS2 monolayers,which agrees well with the density functional theory *** addition,over 11 times of dark current,469 times of photocurrents,photoresponsivity,and external quantum efficiency,and two orders of photoresponse speed are demonstrated from the Er-doped WS2 photodetector compared with those of the pristine WS2 *** findings prove rare-earth doping in 2d materials,the exciting and ideal technique for substantially enhanced photoluminescent and photoresponsive properties.

关键词： excitation vacancy rare

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酒滥用对家庭环境的影响

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中国心理卫生杂志 1996年第S1期10卷 129-130页

作者： A-mGhadirian m.d. 汤宜朗北京安定医院中国药物依赖治疗中心加拿大蒙特利尔麦吉尔大学

引言家庭是人类社会的基础及温床, 是国家的缩影.家庭的变化可反映于社会中.而作为一个系统, 家庭本身又受到来自环境、生物学及社会心理因素的影响.它的演化也受到社会的各种规范及价值体系的影响.因此, 要想理解酒依赖和酒药滥用对家... 详细信息

引言家庭是人类社会的基础及温床, 是国家的缩影.家庭的变化可反映于社会中.而作为一个系统, 家庭本身又受到来自环境、生物学及社会心理因素的影响.它的演化也受到社会的各种规范及价值体系的影响.因此, 要想理解酒依赖和酒药滥用对家庭的影响, 必须首先了解家庭生活的本质、发展及各家庭成员的需求.严格说来, 酒药滥用不仅仅是医学间题,同时也是个体的一次精神危机.

关键词：酒滥用家庭环境家庭成员滥用者滥用药物酒依赖胎儿酒精综合征治疗作用重度饮酒心脏缺损

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Quasi-d-Koszul m.d.les and Applications

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Chinese Annals of mathematics,Series B 2010年第4期31卷 481-490页

作者： Jiafeng LU Zhibing zhao department of mathematics Zhejiang Normal University Jinhua 321004 Zhejiang China School of mathematical Sciences Anhui University Hefei 230039 China

Let R be a Noetherian semiperfect algebra. A necessary and sufficient condition for a finitely generated R-m.d.le to be quasi-d-Koszul is given, which improves one of the main results in [1]. The authors also give a necessary and sufficient condition for the minimal Horseshoe Lemma holding in m.d.R). As an application, it is proved that the "minimal Horseshoe Lemma" is true in the category of quasi-d-Koszul m.d.les under certain conditions.

关键词： Quasi-d-Koszul algebras Quasi-d-Koszul m.d.les minimal Horseshoe Lemma

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3d Flow Past Transonic Turbine Cascade SE 1050-Experiment and Numerical Simulations

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Journal of Thermal Science 2013年第4期22卷 311-319页

作者： d.imurda J.Fürst m.Luxa Institute of Thermomechanics AS CR v.v.i.Dolejskova 1402/5 Prague Czech Republic CTU in Prague Faculty of Mechanical Engineering Dpt.of Technical MathematicsKarlovo Náměstí 13 Prague Czech Republic

This paper is concerned with experimental and numerical research on 3d flow past prismatic turbine cascade SE1050 （known in QNET network as open test case SE1050）. The primary goal was to assess the influence of the inlet velocity profile on the flow structures in the interblade channel and on the flow field parameters at the cascade exit and to compare these findings to results of numerical simulations. Investigations of 3d flow past the cascade with non-uniform inlet velocity profile were carried out both experimentally and numerically at subsonic （m2 = 0.8） and at transonic （m2 = 1.2） regime at design angle of incidence. Experimental data was obtained using a traversing device with a five-hole conical probe. Numerically, the 3d flow was simulated by open source code OpenFOAm and in-house code. Analyses of experimental data and CFd simulations have revealed the development of distinctive vortex structures resulting from non-uniform inlet velocity profile. Origin of these structures results in increased loss of kinetic energy and spanwise shift of kinetic energy loss coefficient distribution. differences found between the subsonic and the transonic case confirm earlier findings available in the literature. Results of CFd and experiments agree reasonably well.

关键词： blade cascade vortex structures transonic flow CFd

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