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Complex ammonium oxidation demands visualized resolution

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Science Bulletin 2024年第16期69卷 2478-2482页

作者： Zhihao Chen Yonghong Wu Jan dolfing Shunyao Zhuang Baozhan Wang dan Li Shan Huang bruce E.Rittmann State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil ScienceChinese Academy of SciencesNanjing 210008China Zigui Three Gorges Reservoir Ecosystem Observation and Research Station of Ministry of Water Resources of the People’s Republic of ChinaYichang 443605China University of Chinese Academy of Sciences Beijing 100049China d College of Nanjing University of Chinese Academy of SciencesNanjing 211135China Faculty of Energy and Environment Northumbria UniversityNewcastle-upon-Tyne NE18QHUK department of Microbiology College of Life SciencesNanjing Agricultural UniversityKey Laboratory of Agricultural and Environmental MicrobiologyMinistry of Agriculture and Rural AffairsNanjing 210095China College of Urban Construction Nanjing Tech UniversityNanjing 211816China department of Civil and Environmental Engineering Princeton UniversityPrinceton NJ 08540USA Biodesign Swette Center for Environmental Biotechnology Arizona State UniversityTempe AZ 85287-5701USA

The nitrogen cycle plays a vital role in sustaining productive and healthy ecosystems,with the microbial nitrogen cycle being a focal point in agriculture and eco-environmental *** these microbially mediated processes is ammonium(NH_(4)^(+))oxidation,the gatekeeper of the nitrogen *** understanding of ammonium oxidation is continuously evolving,thanks to recent research breakthroughs like comammox,Feammox,and dirammox[1-6].The increasing complexity of ammonium oxidation necessitates more precise and well-focused research tools beyond those commonly used today.

关键词： ammonium breakthrough precise

Transforming nanoscale VO_(2)(B) into a scalable sodium-ion electrode

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Nano Research 2024年第10期17卷 8809-8818页

作者： Yunkai Luo Swetha Chandrasekaran Bintao Hu Randy Chen Marcus Worsley bruce dunn department of Materials Science and Engineering University of CaliforniaLos AngelesCA 90095USA Lawrence Livermore National Laboratory CA 94550USA

The intermittent nature of renewable energies requires highly reliable grid-level energy storage approaches.A critical consideration in developing this technology is the areal capacity which determines battery performance and influences the cost of battery *** related importance is finding new ways of developing scalable *** recent years,threedimensional(3d)printing of conductive scaffolds has emerged as an alternative to overcome the scalability limitations of commercial tape cast *** research carried out in the current study demonstrates a successful scalability pathway for nanoscale VO_(2)(B),a desirable cathode for sodium-ion batteries which has a nano-flower morphology with a crystallite sizedepositing VO_(2)(B)onto a graphene aerogel scaffold,we were able to achieve mass loading of over 100 mg·cm^(-2) and still possess an areal capacity of 10 mAh·cm^(-2) at a current density of 5 mA·cm^(-2).Moreover,after 1000 cycles,these electrodes retained 75% to 80% of their initial *** at high loading levels,the electrodeposited VO_(2)(B)exhibits pseudocapacitive material signatures such as a box-like voltammetry response,linear galvanostatic response,and no phase change upon *** scalability of the VO_(2)(B)electrode is demonstrated in a series of experiments which show the areal capacity to scale upon increase in both mass loading and electrode thickness,with only small changes in specific *** study establishes that nanoscale materials can be scaled up to achieve thick electrodes without compromising their electrochemical properties.

关键词： nano VO_(2)(B) sodium-ion battery scalable electrodes three-dimensional(3d)printed scaffold additive manufacturing

Integrative analysis of the nuclear receptor LRH-1（Nr5a2） in ovarian function

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Integrative analysis of the nuclear receptor LRH-1（Nr5a2） ...

Approaching democracy / Larry Berman, bruce Allen murphy. 5th ed.

中国生理学会生殖科学专业委员会—中国动物学会生殖生物学...

作者： bruce d.murphy Centre de recherche en reproduction et fertilité Université de Montréal

＜正＞Following the LH surge,the preovulatory follicle enters an intensive program of cellular differentiation,ultimately triggering ovulation and *** the ovary,the orphan nuclear receptor,liver receptor homolog-1（Lrh-1,Nr5a2）is expressed exclusively in granulosa cells of primary and subsequent stages of *** of Lrh-1 at any time during follicle

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使用安捷伦自清洁离子源和增强型PAH分析仪进行优化的PAH分析

2007年

作者： Larry Berman bruce Allen murphy.

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环境化学 2017年第4期36卷 924-927页

作者： Mike Szelewski bruce d Quimby 2850 Centerville Road Wilmington USA DE19808

安捷伦增强型PAH分析仪采用自清洁离子源的连续清洁模式进行多环芳烃(PAH)分析.同时采用了Agilent 5977A系列GC/MSd系统和Agilent 7000B三重四极杆GC/MS系统,对仪器所有的参数包括进样口、色谱柱和质谱等进行了测试和优化.在1—1000 pg... 详细信息

安捷伦增强型PAH分析仪采用自清洁离子源的连续清洁模式进行多环芳烃(PAH)分析.同时采用了Agilent 5977A系列GC/MSd系统和Agilent 7000B三重四极杆GC/MS系统,对仪器所有的参数包括进样口、色谱柱和质谱等进行了测试和优化.在1—1000 pg的校准范围内,校准方程的线性和ISTd的重现性均得到大幅改善,灵敏度也同样出色.

关键词：多环芳烃自清洁离子源

Skeletal trauma : basic science, management, and reconstruction 4th ed.

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Stimulated emission-depletion-based point-scanning structured illumination microscopy

2009年

作者： Browner bruce d.

v. 1. General principles, spine, pelvis - - v. 2. General principles, upper extremity, lower extremity.

ISBN: (纸本)9781416022206;1416022201;9781416048398;1416048391;9781416048404;1416048405;9789996004636;9996004635;9789996004698;9996004694;9789996072444;9996072444;9789996072505;9996072509

v. 1. General principles, spine, pelvis - - v. 2. General principles, upper extremity, lower extremity.

关键词： Bone and Bonesinjuries

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Chinese Optics Letters 2024年第3期22卷 95-100页

作者：汪磊王美婷王璐玮郑晓敏陈嘉杰吴文帅严伟于斌屈军乐高志邵永红 Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging National-Regional Key Technology Engineering Laboratory for Medical UltrasoundSchool of Biomedical EngineeringShenzhen University Medical SchoolShenzhen 518060China Key Laboratory of Opto-electronic Information Science and Technology of Jiangxi Province Nanchang Hangkong UniversityNanchang 330063China College of Physics and Optoelectronics Engineering Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong ProvinceShenzhen UniversityShenzhen 518060China department of Bioengineering and COMSET Clemson UniversityClemson SC 29634US

Wide-field linear structured illumination microscopy(LSIM)extends resolution beyond the diffraction limit by moving unresolvable high-frequency information into the passband of the microscopy in the form of moiré***,due to the diffraction limit,the spatial frequency of the structured illumination pattern cannot be larger than the microscopy cutoff frequency,which results in a twofold resolution improvement over wide-field *** Letter presents a novel approach in point-scanning LSIM,aimed at achieving higher-resolution improvement by combining stimulated emission depletion(STEd)with point-scanning structured illumination microscopy(ps SIM)(STEd-ps SIM).The according structured illumination pattern whose frequency exceeds the microscopy cutoff frequency is produced by scanning the focus of the sinusoidally modulated excitation beam of STEd *** experimental results showed a 1.58-fold resolution improvement over conventional STEd microscopy with the same depletion laser power.

关键词： stimulated emission depletion structured illumination microscopy superresolution microscopy

The acceleration of a high-charge electron bunch to 10 GeV in a 10-cm nanoparticle-assisted wakefield accelerator

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Matter and Radiation at Extremes 2024年第1期9卷 15-24页

作者： Constantin Aniculaesei Thanh Ha Samuel Yoffe Lance Labun Stephen Milton Edward McCary Michael M.Spinks Hernan J.Quevedo Ou Z.Labun Ritwik Sain Andrea Hannasch Rafal Zgadzaj Isabella Pagano Jose A.Franco-Altamirano Martin L.Ringuette Erhart Gaul Scott V.Luedtke Ganesh Tiwari Bernhard Ersfeld Enrico Brunetti Hartmut Ruhl Todd ditmire Sandra bruce Michael E.donovan Michael C.downer dino A.Jaroszynski Bjorn Manuel Hegelich University of Texas at Austin AustinTexas 78712USA SUPA department of Physics University of StrathclydeGlasgowScotland G4 ONGUnited Kingdom Tau Systems Inc.AustinTexas 78701USA Lawrence Livermore National Laboratory LivermoreCalifornia 94550USA Los Alamos National Laboratory Los AlamosNew Mexico 87545USA Brookhaven National Laboratory UptonNew York 11973USA Ludwig-Maximilians-Universität MunichGermany

An intense laser pulse focused onto a plasma can excite nonlinear plasma *** appropriate conditions,electrons from the background plasma are trapped in the plasma wave and accelerated to ultra-relativistic *** scheme is called a laser wakefield *** this work,we present results from a laser wakefield acceleration experiment using a petawatt-class laser to excite the wakefields as well as nanoparticles to assist the injection of electrons into the accelerating phase of the *** find that a 10-cm-long,nanoparticle-assisted laser wakefield accelerator can generate 340 pC,10±1.86 GeV electron bunches with a 3.4 GeV rms convolved energy spread and a 0.9 mrad rms *** can also produce bunches with lower energies in the 4–6 GeV range.

关键词： acceleration nanoparticle charge

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雷电对航天飞行器作业的影响

气象科技 1991年第6期19卷 55-62页

作者： bruce d.Fisher 郭昌明美国国家航空航天局兰利研究中心

传统上,飞机受雷击并不是飞行安全的主要问题。然而,由于合成材料使用不断增加和在飞行关键系统中使用数字航空电子系统,就要求在这类飞行器的设计中含有更专门的防雷措施以保证现有运输机比较好的雷电安全记录。另外,最近发生的一些不... 详细信息

传统上,飞机受雷击并不是飞行安全的主要问题。然而,由于合成材料使用不断增加和在飞行关键系统中使用数字航空电子系统,就要求在这类飞行器的设计中含有更专门的防雷措施以保证现有运输机比较好的雷电安全记录。另外,最近发生的一些不幸事故,其中最引人注目的是1987年3月在佛罗里达州卡纳维拉尔角空军基地大力神-半人马座A/C67飞行器的损失,表明飞机和运载火箭是十分容易遭受飞行器触发雷电现象的。本文评述美国航空航天局风暴危害计划(SHP)中在与飞机遭到雷击有关的大气现象方面得到的一些新发现。把这些资料与近期业务飞行飞机的雷击结果作了比较。最后,总括给出了NASA和美国国防部正在使用的新的触发闪电的“升空保障准则”(LCC)(下面称升空准则)。NASA的研究资料说明在雷暴中直接雷击飞行器的最大几率发生在环境温度约为—40℃左右。在这种环境中,相对降水和扰动强度可以忽略或比较弱。然而,业务飞行资料说明在日常作业中,大多数飞机雷击发生在温度在冻结层附近的非积雨云中。迄今非雷暴环境还不曾是空中飞行专门的闪电研究对象。

关键词：航天飞行器卡纳维拉尔角航空航天局航空电子系统飞行安全冻结层雷电现象美国国防部大气现象日常作业