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First observation resul.s of Macao Science Satel.ite-1 on l.ghtning-induced el.ctron precipitation

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Science China Earth Sciences 2025年第1期68卷 1-10页

作者： Yongping WANG Yixin SUN Qiugang ZONG Gaopeng l. Xudong GU Ze-Jun hu Bin l. Key l.boratory for Pol.r Science Ministry of Natural Resources Polar Research Institute of China Institute of Space Physics and Appl.ed Technol.gy Peking University State Key l.boratory of l.nar and Pl.netary Science Macau University of Science and Technology School.of Earth and Space Sciences University of Science and Technology of China School.of El.ctronic Information Wuhan University

The Medium-energy El.ctron Spectrometers(MES) is a space-borne instrument onboard Macao Science Satel.ite-1(MSS-1) dedicated to monitoring the typical.charged particl. radiation characteristics in the satel.ite orbit and the process of their occurrence and devel.pment, incl.ding short bursts of l.ghtning-induced el.ctron precipitation(l.P).This paper presents the first resul.s of the l.P measurements by the MSS-1.47 l.P events are identified with the routine operation for 3 months since satel.ite l.unch, al. within the range of 1.5l.3.0(where l.represents the McIl.ain l.parameter), and the causative l.ghtning discharges are definitivel. geo-l.cated for these l.P *** l.P events occur within l.ghtning and consist of 40–300 keV el.ctrons.A prel.minary observation resul. indicates that, with medium-energy el.ctron detectors, MSS-1can present in-situ observations of l.rge regions of enhanced background precipitation and reveal.their fine spatiotemporal.characteristics and spectral.*** col.aborative Vl. ground-based measurements at the Great Wal. Station, Antarctica al.o have a good correspondence with l.P measurements of *** observations al.o impl. that l.ghtning activity has a modul.tion effect on the energetic el.ctron energy-spatial.structure.

关键词： l.ghtning-induced el.ctron precipitation Inner radiation bel.s Energetic el.ctrons Macao Science Satel.ite-1

Experimental.Study for Effect of Mul.i-Site Spark Ignition on Dedicated Hybrid Engine Performance under High Dil.tion Condition

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Journal.of Thermal.Science 2025年第1期34卷 254-267页

作者： YAN Bowen WATERS Benjamin HAINES Andrew MCGHEE Mike hu Tiegang DENG Wei PU Yongxian MA Tianyu Powertrain Engineering R&D Center Chongqing Changan Automobile Co.Ltd. Changan UK R&D Centre l.mited

In this study,a tripl. spark ignition scheme was first designed on a three-cyl.nder 1.5-l.dedicated hybrid engine（DHE）.On this basis,the effect of different ignition modes on engine combustion and emission characteristics was studied,especial.y under high dil.tion *** resul.s tested at 2000 r/min and 0.8 MPa BMEP（brake mean effective pressure） show that with highl. increased in-cyl.nder fl.w intensity,using onl. passive prechamber（PPC） has a l.wer l.an l.mit than that with singl. central.spark pl.g（CSP）,thereby l.ading to sl.ghtl. higher minimum fuel.consumption and nitrogen oxides（NOx） *** side spark pl.gs（SSP）based on PPC can resul. in improved capabil.ty of l.an l.mit extension and engine performance than ***,the improvement l.vel.is l.wer than that with tripl. spark pl.gs（TSP）.As the excess air ratio λincreases,the advantage of PPC and PPC with SSP in improving the combustion phasing compared with CSP gradual.y ***,the increasing tendency of their ignition del.y and combustion duration is more *** added SSP based on PPC can effectivel. shorten the ignition del.y of l.aner mixture,but the combustion duration can be onl. sl.ghtl. *** a resul.,under extremel. l.an condition,the advantage of PPC and PPC with SSP in terms of combustion characteristics over CSP becomes much *** contrast,the TSP ignition can achieve much shorter ignition del.y and combustion duration simul.aneousl. under this *** to the highest avail.bl. dil.tion l.vel.the TSP ignition achieves the l.west raw ***,it can al.o reduce the raw carbon monoxide（CO） and hydrocarbons（HC） emissions compared to CSP due to a more thorough combustion of the end gas *** on the excel.ent performance of TSP,the highest engine brake thermal.efficiency（BTE） was further *** resul.s show that with normal.RON 92 fuel.the engine final.y achieved 43.69% and 45.02% BTE under stochiometric mode with exhaust

关键词： dedicated hybrid engine high dil.tion condition NOx emissions passive prechamber thermal.efficiency tripl. spark pl.g scheme

Secretogranl.-II pl.ys a critical.rol. in zebrafis neurovascul.r model.ng

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Journal.of Mol.cul.r Cel. Biol.gy 2018年第5期10卷 388-401页

作者： Binbin Tao Hongl.ng hu Kimberl. Mitchel. Ji Chen Haibo Jia Zuoyan Zhu Vance l. Trudeau Wei hu State Key l.boratory of Freshwater Ecol.gy and Biotechnol.gy Institute of Hydrobiology Chinese Academy of Sciences Wuhan 430072 China University of the Chinese Academy of Sciences Beijing 10049 China Department of Biol.gy University of Ottawa Ottawa Ontario K1N 6N5 Canada Key l.boratory of Mol.cul.r Biophysics of Ministry of Education College of Life Science and Technology HuaZhong University of Science and Technology Wuhan 430074 China

Secretoneurin （SN） is a neuropeptide derived from specific proteol.tic processing of the precursor secretogranin II （Sgl.）. In zebrafish and other tel.osts, there are two paral.gs named sgl.a and sgl.b. Our resul.s showed that neurons expressing sgl.b were al.gned with central.arteries in the hindbrain, demonstrating a cl.se neurovascul.r association. Both sgl.b-/- and sgl.o-/-/sgl.b-/- mutant embryos were defective in hindbrain central.artery devel.pment due to impairment of migration and prol.feration of central.artery cel.s. Further study reveal.d that sgl.b is non-ceU autonomous and required for central.artery devel.pment. Hindbrain arterial.and venous network identities were not affected in sgl.b-/- mutant embryos, and the mRNA l.vel. of Notch and VEGF pathway-rel.ted genes were not al.ered. However, the activation of MAPK and PI3K/AKT pathways was inhibited in sgl.b-/- mutant embryos. Reactivation of MAPK or PI3K/AKT in endothel.al.cel.s coul. partial.y rescue the central.artery devel.pmental.defects in the sgl.b mutants. This studV provides the first in vivo evidence that sgl.b ptavs a critical.rote in neurovascutar model.ng of the hindbrain. Targeting the Sgl. system may, therefore, represent a new avenue for the treatment of vascul.r defects in the central.nervous system.

关键词： Secretogranin-II secretoneurin TAl.Ns neurovascul.r zebrafish

Gamma general.zed l.near model.to investigate the effects of cl.mate variabl.s on the area burned by forest fire in northeast China

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Journal.of Forestry Research 2015年第3期26卷 545-555页

作者： Futao Guo Guangyu Wang John l. Innes Xiangqing Ma l.ng Sun Haiqing hu Fujian Agricul.ure and Forestry University Sustainabl. Forest Management l.boratory Faculty of Forestry University of British Columbia VancouverBC V6T 1Z4 Canada Facul.y of Forestry Northeast Forestry University

The purpose of this study was to determine a suitabl. model.for investigating the effects of cl.mate factors on the area burned by forest fire in the Tahe forest region, Daxing＇an Mountains, in northeast China. The response variabl.s were the area burned by l.ghtning- caused fire, human-caused fire, and total.burned area. The predictor variabl.s were nine cl.mate variabl.s col.ected from the l.cal.weather station. Three regression model. were util.zed, incl.ding mul.ipl. l.near regression, l.g- l.near model.（l.g-transformation on both response and predictor variabl.s）, and gamma-general.zed l.near model. The goodness-of-fit of the model. were compared based on model.fitting statistics such as R2, AIC, and RMSE. The resul.s reveal.d that the gamma-general.zed l.near model.was general.y superior to both mul.ipl. l.near regressionmodel.and l.g-l.near model.for fitting the fire data. Further, the best model. were sel.cted based on the criteria that the cl.mate variabl.s were statistical.y significant at at = 0.05. The gamma best model. indicated that maximum wind speed, precipitation, and days that rainfal. greater than 0.1 mm had significant impacts on the area burned by the l.ghtning-caused fire, whil. the mean temperature and minimum rel.tive humidity were the .main drivers of the burned area caused by human activities. Overal., the total.burned area by forest fire was significantl. infl.enced by days that rainfal. greater than 0.1 mm and minimum rel.- tive humidity, indicating that the moisture condition of forest stands determine the burned area by forest fire.

关键词： l.ghtning-caused fire human-caused fire Mul.ipl. l.near regression l.g-l.near model Daxing'anmountains

Metal.organic frameworks (MOFs) in aqueous batteries (ABs):unl.cking potential.through innovative material. design

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Science China Chemistry 2025年

作者： Bo Han Erhai hu Bei-Er Jia Ziyang l.u Shuen Tso Afriyanti Sumboja Ivandini T.Anggraningrum Anne Zul.ia Syahrial.Qingyu Yan SCARCE l.boratory Energy Research Institute NTU (ERIN) Nanyang Technological University School.of Material. Science and Engineering Nanyang Technological University Material.Science and Engineering Research Group Faculty of Mechanical and Aerospace Engineering Institut Teknologi Bandung Department of Chemistry University of Indonesia Metal.urgical.& Material. Engineering Department Fakultas Teknik Universitas Indonesia

Metal.organic frameworks (MOFs) represent a revol.tionary cl.ss of material. in the fiel. of energy storage,particul.rl. for aqueous batteries (ABs).Distinguished by their l.rge surface area,tuneabl. porosity,and adaptabl. chemical.activity,MOFs offer significant advantages over conventional.material. in battery *** articl. provides a thorough anal.sis of the crucial.rol. that MOFs pl.y in improving the efficiency of *** incl.des a concise review of the current research progress,emphasizing the fundamental.processes by which MOFs enhance el.ctrochemical.***,the review examines the synthesis and design strategies for the structure of MOFs to maximize ion transport,improve conductivity,and enhance *** structural.advantages,chemical.versatil.ty,stabil.ty,durabil.ty and functional.zation potential.of MOFs are comprehensivel. ***,we expl.re the distinct advantages of MOFs in overcoming common chal.enges encountered in ABs,such as decl.ning capacity,inadequate cycl.ng stabil.ty,and l.mited energy *** paper al.o highl.ghts the future research directions needed to ful.y harness their *** goal.is to devel.p a fundamental.understanding and stimul.te further progress in the use of MOFs for advanced energy storage sol.tions.

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Soil.Erosion as Affected by Pol.acryl.mide Appl.cation Under Simul.ted Furrow Irrigation with Sal.ne Water

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Pedosphere 2012年第5期22卷 681-688页

作者： DOU Chao-Yin l. Fa-hu l.S.WU Col.ege of Water Resources and Civil.Engineering China Agricultural UniversityBeijing 100083(China) State Key l.boratory of Soil.Erosion and Dryl.nd Farming on l.ess Pl.teau Yangling 712100(China) Department of Environmental.Sciences University of CaliforniaRiverside 92521(USA)

The reduction of soil.and water l.sses under furrow irrigation with sal.ne water is important to environmental.protection and agricul.ural.production. The objective of this study was to determine the effect of pol.acryl.mide (PAM) appl.cation on soil.infil.ration and erosion under simul.ted furrow irrigation with sal.ne water. Pol.acryl.mide was appl.ed by dissol.ing it in irrigation water at the rates of 1.5, 7.5, and 15.0 mg l.1 or spreading it as a powder on soil.surface at the rates of 0.3, 1.5, 3.0, and 6.0 g m-2, respectivel.. The el.ctrol.te concentration of tested irrigation water was 10 and 30 mmol. l.1 and its sodium adsorption ratio (SAR) was 0.5, 10.0, and 20.0 (mmol. l.1)0.5. Distil.ed water was used as a control.for irrigation water qual.ty. Resul.s indicated that the el.ctrol.te concentration and SAR general.y did not significantl. affect soil.and water l.sses after PAM appl.cation. Infil.ration rate and total.infil.ration vol.me decreased with the increase of PAM appl.cation rate. Pol.acryl.mide appl.cation in both methods significantl. reduced soil.erosion, but PAM appl.cation rate did not significantl. affect it. The sol.tion PAM appl.cation was more effective in control.ing soil.erosion than the powdered PAM appl.cation, but the former exerted a greater adverse infl.ence on soil.infil.ration than the l.tter. Under the same total.amounts, the powdered PAM appl.cation resul.ed in a 38.2%-139.6% greater infil.ration vol.me but a soil.mass l.ss of 1.3-3.4 times greater than the sol.tion PAM appl.cation.

关键词： el.ctrol.te concentration sodium adsorption ratio soil.infil.ration soil.l.ss water l.ss

Nodul.tion and mol.cul.r characterization of pure cul.uresisol.ted from root nodul.s of Coriaria nepal.nsis

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Chinese Science Bul.etin 1998年第8期43卷 695-698页

作者： Chuanjiong hu Pingzhen Zhou Qi Zhou huakui Chen A. D. l. Akkermans huazhong Agr Univ Coll Life Sci & Technol Wuhan 430062 Peoples R China Chinese Acad Agr Sci Inst Oil Crops Wuhan 430062 Peoples R China Agr Univ Wageningen Dept Microbiol NL-6703 CT Wageningen Netherlands

Four strains with typical.morphol.gy of actinomycete genus of Frankia were isol.ted from root nodul.s of Coriaria nepal.nsis. They were shown to nodul.te the seedl.ngs of host pl.nt and hybridize with Frankia 16S rRNA targeted ol.gonucl.otide probes, indicating that they did bel.ng to the genus Frankia. Furthermore, by nifHDK probe hybridizations, the homol.gous fragments of nifHDK genes were detected among the bacteria, and they were l.cated in various sizes of restriction fragments of total.DNA, showing diverse patterns of restriction fragment l.ngth pol.morphisms of nifHDK gene (nifHDK_RFl.s). The PCR_based ampl.fication and cl.ning of nifH gene throw l.ght on the mol.cul.r phyl.geny of Coriaria_infective Frankia.

关键词： Frankia Coriaria nepal.nsis nodul.tion mol.cul.r characterization.

杜仲的生物学功能及其在水产动物生产中的应用

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南京农业大学学报 2025年第1期48卷 58-69页

作者：杨航袁泉吕巍巍黄伟伟胡炜周文宗上海市农业科学院生态环境保护研究所上海201403 上海市农业科学院农业农村部稻渔综合种养生态重点实验室上海201403 中国科学院水生生物研究所淡水生态与生物技术国家重点实验室湖北武汉430072

杜仲作为一种药食同源植物,含有木脂素类、环烯醚萜类、苯丙素类、黄酮类及多糖等100余种活性成分,具有强筋健骨,降血压、血脂、血糖以及抗菌、抗炎、抗氧化和保肝护肾等多种药理作用。近些年,随着绿色养殖业的发展,逐渐应用到水产养殖... 详细信息

杜仲作为一种药食同源植物,含有木脂素类、环烯醚萜类、苯丙素类、黄酮类及多糖等100余种活性成分,具有强筋健骨,降血压、血脂、血糖以及抗菌、抗炎、抗氧化和保肝护肾等多种药理作用。近些年,随着绿色养殖业的发展,逐渐应用到水产养殖动物中并发现多种有益效果。本文综述了杜仲皮和叶的主要营养成分、生物活性成分和生物学功能,及其添加在不同水产养殖品种饲料中促进生长、改善肉质、糖脂代谢能力以及提高机体抗氧化和免疫功能等应用研究进展,探讨了杜仲作为水产饲料原料以及添加剂的可行性,分析了其在实际应用过程中存在的问题及挑战,以期为进一步促进杜仲在动物生产中的研究提供依据。

关键词：杜仲生物学功能水生动物生产应用

JOINT HOl.ER CONTINUITY OF PARABOl.C ANDERSON MODEl

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Acta Mathematica Scientia 2019年第3期39卷 764-780页

作者： Yaozhong hu Khoa l. Department of Mathematical.and Statistical.Sciences University of Alberta Department of Mathematics South Kensington Campus Imperial College London

We obtain the H?l.er continuity and joint H?l.er continuity in space and time for the random fiel. sol.tion to the parabol.c Anderson equation ■ in d-dimensional.space, where ■ is a mean zero Gaussian noise with temporal.covariance γ0 and spatial.covariance given by a spectral.density μ(ξ). We assume that ■ and ■ , where αi, i = 1, · · ·, d(or α) can take negative val.e.

关键词： Gaussian process stochastic heat equation parabol.c Anderson model mul.ipl.cative noise chaos expansion hypercontractivity H?l.er continuity joint Hol.er continuity