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纤维碳孔洞形态和质地的^(129)Xe核磁共振研究(英文)

第二届废物地下处置学术研讨会

作者： k.Rshoff berg bygg k.nsult A.b. SolnaSweden

3D terrestrial laser scanning is nowadays one of the most attractive methods to applying for 3D mapping and documentation of rock.faces and tunnels,and shows the most potential to improve the data quality and provide some good solutions in rock.engineering *** this paper,the state-of-the-art methods are described for different possibility to tunnel documentation and geological mapping based on 3D laser scanning *** results are presented from the case study performed at the Hard Rock.Laboratory, sp run by Sk.,Swedish Nuclear Fuel and Waste Management *** to traditional methods,3D laser scanning techniques can not only provide us with a rapid and 3D digital way for tunnel documentation, but also create a potential chance to achieve high quality data,which might be beneficial to different rock.engineering project procedures,including field data acquisition,data processing,data retrieving and management,and also modeling and design.

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光散射学报 2005年第3期17卷 281-282页

作者： Romanenk. k.V. Fraissard J. J.b.Espinose de la Caillerie Lapina O.b. Reshetenk. T. boresk.v Institute of Catalysis Pr.Akademika Lavrentieva 5 Novosibirsk Russia 630090Boreskov Institute of Catalysis Pr.Akademika Lavrentieva 5 Novosibirsk Russia 630090Boreskov Institute of Catalysis Pr.Akademika Lavrentieva 5 Novosibirsk Russia 630090Boreskov Institute of Catalysis Pr.Akademika Lavrentieva 5 Novosibirsk Russia 630090Boreskov Institute of Catalysis Pr.Akademika Lavrentieva 5 Novosibirsk Russia 630090

The task. of nanocarbon morphology and porosity characterization are always actually. So far the texture and microstructure of carbons were examined only by suitable adsorption methods, which are not always effective. The 129Xe NMR on adsorbed xenon was first introduced and developed by Fraissard[1, and references therein]. Unlik. zeolites, carbon materials were not studied by 129Xe NMR techniques profoundly. Therefore, correlations of nuclear magnetic resonance parameters with structural and chemical properties of carbons are not established. Nevertheless the Xe NMR is k.own to be extremely effective tool in characterization of solids such as micro- mesoporous zeolites and amorphous silicas [1, 2]. Hence, it seems that previous 129Xe NMR studies are to be extended on other materials with different surface and textural properties.

关键词：碳纤维 NMR 核磁共振形态学碳纳米管微观结构

Nutrient changes in potting mix and Eucalyptus nitens leaf tissue under macadamia biochar amendments

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Journal of Forestry Research 2018年第2期29卷 379-389页

作者： A.Wrobel-Tobiszewsk. M.boersma J.Sargison P.Adams b.Singh S.Frank. C.J.birch D.C.Close CREPS Centre for Renewable Energy and Power SystemsSchool of Engineering and ICTUniversity of TasmaniaEngineering BuildingDobson RoadSandy Bay CampusHobartAustralia Tasmanian Institute of Agriculture University of Tasmania16-20 Mooreville RoadPO Box 3523Burnie 7320Australia JSA Consulting Engineers Pty Ltd Ellerslie HouseLevel 1119 Sandy Bay RoadSandy BayTAS 7005Australia Forestry Tasmania 79 Melville StreetHobartTAS 7000Australia Faculty of Agriculture and Environment Center for CarbonWater and FoodBiomedical BuildingUniversity of SydneyCamperdownNSW 2006Australia

The effect of macadamia nut shell biochar on nitrogen,potassium,phosphorus,magnesium,calcium and sodium concentrations in potting mix used to grow Eucalyptus nitens seedlings was investigated in a glasshouse *** treatments combined two fertiliser rates（50 and 100% rate of the commercial mix commonly used in forestry nurseries） with eight biochar rates(0,2,5,10,20,50,80 and 100 t ha;) arranged in a randomised complete block.with three replicates of four sample *** were quantified in the potting mix and seedling leaves at four destructive harvests 135,177,219 and269 days after *** significantly increased nitrate-N,Colwell P,Colwell k.and exchangeable Na andreduced ammonium-N,Mg and Ca concentrations in the potting *** leaf concentrations of P,k.and Na were increased by biochar application,while N remained dependent on fertiliser rate *** and Ca leaf concentrations decreased in response to increasing biochar *** nitrate-N and decreased ammonium-N concentrations suggest that biochar might have increased nitrification in the potting *** presumed that biochar mediated processes that reduced uptak. of P and k.when high doses of biochar were combined with full *** in potting mix k.Na,Mg and Ca were consistent with selective adsorption of ions to biochar surfaces.

关键词： Charcoal Forest plantation Plant nutrition Seedlings Soil chemistry

Trade-off between microbial carbon use efficiency and specific nutrient-acquiring extracellular enzyme activities under reduced oxygen

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Soil Ecology Letters 2023年第2期5卷 43-53页

作者： Ji Chen Irene Cordero Daryl L.Moorhead Jennifer k.Rowntree Lorae T.Simpson Richard D.bardgett Hayley Craig Department of Agroecology Aarhus University8830 TjeleDenmark Aarhus University Centre for Circular bioeconomy Aarhus University8830 TjeleDenmark iCLIMATE Interdisciplinary Centre for Climate Change Aarhus University4000 RoskildeDenmark Department of Earth and Environmental Sciences The University of ManchesterOxford RoadManchesterM139PTUK Department of Environmental Sciences University of Toledo2801 W.Bancroft St.ToledoOH 43606-3390USA School of biological and Marine Sciences University of PlymouthDrake CircusPlymouthPL48AAUK Florida Oceanographic Society 890 NE Ocean BlvdStuartFL 34996USA NatureMetrics Occam CourtSurrey Research ParkGuildfordGU27HJUK

Mangroves are one of the most ecologically sensitive ecosystems to global climate change,which have cascading impacts on soil carbon(C),nitrogen(N)and phosphorus(P)***,mangroves are experiencing increasing N and P loadings and reduced oxygen availability due to intensified climate change and human ***,both direct and interactive effects of these perturbations on microbially mediated soil C,N and P cycling are poorly ***,we simultaneously investigated the effects of N and P loadings and reduced oxygen on microbial biomass,microbial respiration,and extracellular enzyme activities(EEAs)in mangrove *** calculated the microbial metabolic quotient(qCO_(2)),which is regarded as a useful inverse metric of microbial C use efficiency(CUE).Our results show that reduced oxygen significantly increases both qCO_(2) and microbial specific EEAs(enzyme activity per unit of microbial biomass)for C-,N-and P-acquisition regardless of N or P ***,we found that qCO_(2) positively correlated with microbial specific EEAs under reduced oxygen,whereas no clear relationship was detected under ambient *** results suggest that reduced oxygen increases microbial specific EEAs at the expense of increasing microbial respiration per unit biomass,indicating higher energy cost per unit enzyme production.

关键词： reduced oxygen extracellular enzyme microbial respiration nutrient acquisition nutrient addition mangrove

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小儿急性腹痛

中国实用乡村医生杂志 2004年第11期11卷 40-42页

作者： Alexander k.C.Leung M.b.b.S David L.Sigalet M.D Ph.D 胡浩 University of Calgary Faculty of Medicine CalgaryAlberta 中国医科大学86期英文1班

腹痛是小儿的常见症状.尽管大多数小儿急性腹痛的症状有自限性,但仍然应该视为内、外科的急症来处理.能够早期作出腹痛的正确诊断是最困难的,而这又是开展治疗和抑制病情恶化的关键.本文为小儿急性腹痛的评估提供一个综合的临床指导方针.

关键词：小儿腹痛诊断

从种子蛋白质谱带分析花生区组的系统发育关系

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花生科技 1993年第3期22卷 36-40页

作者： A.k.Singh 周蓉

前言种子蛋白质电泳谱带分析对于从分子水平上确定物种的遗传同源性及解决分类和系统发育问题已成为一项实用技术。在花生属的花生区组中,各个种之间的系统发育关系已从形态学、植物地理学及细胞遗传学等方面作过许多探索。这些研究主... 详细信息

前言种子蛋白质电泳谱带分析对于从分子水平上确定物种的遗传同源性及解决分类和系统发育问题已成为一项实用技术。在花生属的花生区组中,各个种之间的系统发育关系已从形态学、植物地理学及细胞遗传学等方面作过许多探索。这些研究主要揭示了大多数二倍体种都有一个共同的A染色体组,而***则有不同的染色体组即b染色体组。A、b染色体组都是同源的,并共同构成四倍体栽培种***。

关键词：花生系统发育种子蛋白

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泥浆振动筛

泥浆振动筛

Microstructural evaluation of Hastelloy-X transient liquid phase bonded joints:Effects of filler metal thick.ess and holding time

丛书名：泥浆设备手册

1987年

作者：（美）布兰特（brandt L.k.）（美）洛　夫（Love b.）李祖圣译

书名原文:Shale shak.:本书介绍了钻井作业中的关键性设备-泥浆振动筛的操作和设计原则,以及振动筛的振动形式、处理能力、筛网选择等。

ISBN: (纸本)7502100377

书名原文:Shale shak.:本书介绍了钻井作业中的关键性设备-泥浆振动筛的操作和设计原则,以及振动筛的振动形式、处理能力、筛网选择等。

关键词：泥浆除砂器学科:基本知识

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Transactions of Nonferrous Metals Society of China 2022年第5期32卷 1548-1558页

作者： A.MALEk.N S.E.MIRSALEHI M.FARVIZI N.SAITO k.NAk.SHIMA Ceramic Division Materials and Energy Research CenterP.O.Box 14155-4777TehranIran Department of Materials and Metallurgical Engineering Amirkabir University of Technology(Tehran Polytechnic)Tehran 15875-4413Iran Department of Materials Science and Engineering Kyushu University744MotookaNishi-kuFukuoka 819-0395Japan

Transient liquid phase(TLP)bonding was investigated in Hastelloy-X samples with different filler metal thick.esses(20,35,50,65,and 100μm)and holding time(5,20,80,320,and 640 min)to obtain optimum bonding *** evaluations using electron probe microanalysis(EPMA)and electron back.cattered diffraction(EbSD)show that the central eutectic phases present in the athermally solidified zone(ASZ)are Ni_(3)b,Ni_(2)Si,and Crb,and the precipitates formed in the diffusion-affected zone(DAZ)are Mob,Crb_(2),and Mo_(2)b_(5).According to the results,decreasing the filler thick.ess as well as increasing the holding time helps realize the completion of isothermal solidification and reduction in the density of precipitates in the DAZ,leading to a joint with more uniform *** of boron and silicon to longer distances with increasing holding time causes the removal of Cr-rich borides in the DAZ and the formation of Mo-rich silicide at the joint *** in hardness of ASZ and DAZ due to the elimination of brittle phases in these zones during long holding time causes more uniform hardness distribution in the joint *** best results are obtained for the sample joined with the 35μm-thick.filler metal for 640 min holding time.

关键词： Hastelloy-X transient liquid phase(TLP)bonding microstructure filler metal electron probe microanalysis(EPMA) electron back.cattered diffraction(EbSD)

Investigation on the InAs(1–x)Sbx epilayers growth on GaAs(001)substrate by molecular beam epitaxy

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Journal of Semiconductors 2018年第3期39卷 14-18页

作者： D.benyahia L.k.biszyn k.Michalczewsk. A.k.blowsk. P.Martyniuk.J.Piotrowsk. A.Rogalsk. Institute of Applied Physics Military University of Technology2 Kaliskiego Str.00-908 WarsawPoland Vigo System S.A. 129/133 Poznaflska Str.05-850 O2ar6w MazowieckiPoland

Undoped and be-doped InAs（1–x）Sbx（0 ≤ x ≤ 0.71） epitaxial layers were successfully grown on lattice mismatched semi-insulating Ga As（001） substrate with 2° offcut towards 〈110〉. The effect of the In As buffer layer on the quality of the grown layers was investigated. Moreover, the influence of Sb/In flux ratio on the Sb fraction was examined. Furthermore, we have studied the defects distribution along the depth of the In As Sb *** addition, the p-type doping of the grown layers was explored. The In As Sb layers were assessed by X-ray diffraction, Nomarsk. microscopy, high resolution optical microscopy and Hall effect measurement. The In As buffer layer was found to be beneficial for the growth of high quality In As Sb layers. The X-ray analysis revealed a full width at half maximum（FWHM） of 571 arcsec for In As0.87 Sb0.13. It is worth noting here that the Hall concentration（mobility） as low（high） as 5 × 10^（16）cm^（-3）（25000 cm^2 V^（-1）s^（-1）） at room temperature, has been acquired.

关键词： MbE InAsSb Hall effect GaAs X-ray diffraction