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Gas Line Pressure Fluctuation Analysis of a Gas-Liquid Reactor

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journal of Thermal Science 2005年第3期14卷 267-271页

作者： j.j.j. CHEN j.C. ZHAO Chemical & Materials Engineering Department The University of Auckland Private Bag 92019 Auckland New Zealand ProfessorChemical & Materials Engineering Department The University of Auckland Private Bag 92019 Auckland New Zealand

To ensure efficient operation of metallurgical gas-liquid reactors, the gas bubbles must be uniformly distributed. For high temperature metallurgical reactors, it is impractical and unsafe to carry out visual observations. An air-water model was used to study the relationship between the bubble flow patterns and the pressure fluctuation signals. The fluctuation signals captured in the time domain were transformed into the frequency domain. Various parameters obtained from the transformed data were analysed for their suitability for delineating the bubble flow patterns observed. These parameters and the flow patterns were found to be well-correlated using the gas flow number.

关键词： gas liquid reactors bubble distribution signal analysis

Computational study on influence of RF shielding box on inductance of coil

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Plasma Science and Technology 2019年第6期21卷 23-28页

作者： S j KIM j j LEE Y S LEE j H KIM S j YOU Applied Physics lab for PLasma Engineering(APPLE) Department of Physics Chungnam National University Daejeon 34134 Republic of Korea Korea Research Institute of Standards and Science(KRISS) Daejeon 34113 Republic of Korea

Despite the fact that a radio frequency (RF) shielding box affects a coil inductance used in matching network,RF engineers have used a coil inductance measured in open space on designing matching networks since it is difficult to precisely measure the coil inductance within the RF shielding *** this work,we investigate the influences of the RF shielding box on the coil inductance via a 3D full electromagnetic wave *** results shows that the coil inductance decreases from-6.0% to-11.9% compared with its ideal inductance depending on coil positions within the RF shielding *** inductive and capacitive coupling between the coil and surfaces of the RF shielding box contribute to the reduction of the coil *** expect that these results would be useful for those who design RF matching networks.

关键词： 3D full EM wave simulation RF matching component RF shield inductive and capacitive coupling

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胰腺癌

英国医学杂志中文版 2012年第4期15卷 222-228页

作者： Giles Bond-Smith Need Banga toby M Hammond Charles j lmber hepatopancreatic-biliary and liver transplantsurgeon

2008年，全球诊断新发胰腺癌病例大约有21．7万例，而在英国每年有8000例胰腺癌新发病例。世界范围内，胰腺癌的发病率位于第13位，但在癌症中其病死率排第8位。在英国，胰腺癌是排名第11位的常见癌症，且在男性和女性中均为由癌症导致... 详细信息

2008年，全球诊断新发胰腺癌病例大约有21．7万例，而在英国每年有8000例胰腺癌新发病例。世界范围内，胰腺癌的发病率位于第13位，但在癌症中其病死率排第8位。在英国，胰腺癌是排名第11位的常见癌症，且在男性和女性中均为由癌症导致死亡的第5位常见死因。

关键词：胰腺癌常见癌症新发病例世界范围发病率病死率英国

Formation of High-quality Advanced High-k Oxide Layers at Low Temperature by Excimer UV Lamp-assisted Photo-CVD and Sol-gel Processing

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Chemical Research in Chinese Universities 2004年第4期20卷 396-402页

作者： YU j. j. Electronic & Electrical Engineering University College London

We have successfully demonstrated that high quality and high dielectric constant layers can be fabricated by low temperature photo-induced or -assisted processing. Ta_2O_5 and ZrO_2 have been deposited at t<400 ℃ by means of a UV photo-CVD technique and HfO_2 by photo-assisted sol-gel processing with the aid of excimer lamps. The UV annealing of as-grown layers was found to significantly improve their electrical properties. Low leakage current densities on the order of 10 -8 A/cm 2 at 1 MV/cm for deposited ultrathin Ta_2O_5 films and ca.10 -6 A/cm 2 for the photo-CVD ZrO_2 layers and photo-irradiated sol-gel HfO_2 layers have been readily achieved. The improvement in the leakage properties of these layers is attributed to the UV-generated active oxygen species O( 1D) which strongly oxidize any suboxides to form more stoichiometric oxides on removing certain defects, oxygen vacancies and impurities present in the as-prepared layers. The photo-CVD Ta_2O_5 films deposited across 10.16-cm Si wafers exhibit a high thickness uniformity with a variation of less than \{±2.0%\} being obtained for ultrathin ca.10 nm thick films. The lamp technology can in principle be extended to larger area wafers, providing a promising low temperature route to the fabrication of a range of high quality thin films for future ULSI technology.

关键词： Excimer lamp High-kdielectrics Thin film Chemical vapour deposition(CVD) Sol-gel processing

Indian plate paleogeography, subduction and horizontal underthrusting below Tibet: paradoxes, controversies and opportunities

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National Science Review 2022年第8期9卷 175-193页

作者： Douwe j.j.van Hinsbergen Department of Earth Sciences Utrecht University

The India–Asia collision zone is the archetype to calibrate geological responses to continent–continent collision, but hosts a paradox: there is no orogen-wide geological record of oceanic subduction after initial collision around 60–55 Ma, yet thousands of kilometers of post-collisional subduction occurred before the arrival of unsubductable continental lithosphere that currently horizontally underlies Tibet. Kinematically restoring incipient horizontal underthrusting accurately predicts geologically estimated diachronous slab break-off, unlocking the Miocene of Himalaya–Tibet as a natural laboratory for unsubductable lithosphere convergence. Additionally, three endmember paleogeographic scenarios exist with different predictions for the nature of post-collisional subducted lithosphere but each is defended and challenged based on similar data types. This paper attempts at breaking through this impasse by identifying how the three paleogeographic scenarios each challenge paradigms in geodynamics, orogenesis, magmatism or paleogeographic reconstruction and identify opportunities for methodological advances in paleomagnetism, sediment provenance analysis, and seismology to conclusively constrain Greater Indian paleogeography.

关键词： collision orogenesis subduction reconstruction Himalaya Tibet

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CSR沟通的15种技巧

WTO经济导刊 2013年第8期 60-61页

作者：李长海 toby Webb Ethical Corporation公司

对于负责可持续性事务和社会责任沟通的企业主管来说，有很多的沟通技巧可用到。

关键词：技巧 CSR 企业主管社会责任可持续性

口罩、视野与跌倒的风险减速比看路可能更安全

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英国医学杂志中文版 2021年第10期24卷 571-572页

作者： Elmar C Kai William R Young toby j Ellmers 夏鹏(译) Centre for Cognitive Neuroscience Brunel University London 中国医学科学院北京协和医院

公共卫生专家和国际组织均明确推荐佩戴口罩,以减少新型冠状病毒;j市炎(C0VID-19)的传播1。因此,安全舒适地佩戴口罩方法对于最大限度地提高人们的使用率和依从性是至关重要的。正式指南和配套的媒体报道主要集中在使用口罩的不适及交... 详细信息

公共卫生专家和国际组织均明确推荐佩戴口罩,以减少新型冠状病毒;j市炎(C0VID-19)的传播1。因此,安全舒适地佩戴口罩方法对于最大限度地提高人们的使用率和依从性是至关重要的。正式指南和配套的媒体报道主要集中在使用口罩的不适及交流问题2,而关于佩戴口罩对跌倒风险的影响则关注较少。

关键词：跌倒风险媒体报道减速比依从性安全舒适口罩新型冠状病毒最大限度

Application of CCD Cameras to Investigations of Mixing on Boundaries of a Thermal Plasma jet

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Plasma Science and Technology 2007年第6期9卷 743-746页

作者： j.HLINA j.SONSKY j.SLECHTA Institute of Thermomechanics Academy of Sciences of the Czech RepublicDolejskova 5182 00 Praha 8Czech Republic

Mixing of a thermal plasma jet with the surrounding atmosphere was studied using two CCD cameras （PCO SensiCam） situated detecting simultaneously the radiation of argon and nitrogen. The evaluation of image differences between two records showed that the location of regions on plasma jet boundaries characterised by stronger nitrogen radiation changes with the plasma flow rate. Close-to-laminar flow results in a small mixing rate and consequently low nitrogen optical emission on plasma jet boundaries. The increase of the flow rate leads to the formation of a relatively thick and stable layer on the boundaries characterised by strong nitrogen radiation. Further enhancement of the flow rate results in the formation of unstable regions of excited nitrogen molecules moving along the jet.

关键词： thermal plasma jet mixing CCD camera

Design,fabrication,characterization and reliability study of CMOS-MEMS Lorentz-force magnetometers

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Microsystems & Nanoengineering 2022年第5期8卷 17-41页

作者： j.j.Valle j.M.Sánchez-Chiva D.Fernández j.Madrenas Department of Electronic Engineering Universitat Politècnica de CatalunyaJordi Girona 1 i 3Edifici C408034 BarcelonaSpain Sorbonne Université CNRSLaboratoire de Recherche en Informatique(LIP6)UMR76064 place Jussieu75005 ParisFrance Institut de Física d’Altes Energies(IFAE) The Barcelona Institute of Science and Technology(BIST)Edifici Cn.Facultat Ciències NordUniversitat Autónoma de Barcelona08193 Bellaterra(Barcelona)Spain

This article presents several design techniques to fabricate micro-electro-mechanical systems(MEMS)using standard complementary metal-oxide semiconductor(CMOS)*** were applied to fabricate high yield CMOS-MEMS shielded Lorentz-force magnetometers(LFM).The multilayered metals and oxides of the back-end-of-line(BEOL),normally used for electronic routing,comprise the structural part of the *** most important fabrication challenges,modeling approaches and design solutions are *** that predict the Q factor,sensitivity,Brownian noise and resonant frequency as a function of temperature,gas pressure and design parameters are presented and validated in characterization tests.A number of the fabricated magnetometers were packaged into Quad Flat No-leads(QFN)*** show this process can achieve yields above 95%when the proper design techniques are *** CMOS not being a process for MEMS manufacturing,estimated performance(sensitivity and noise level)is similar or superior to current commercial magnetometers and others built with MEMS ***,typical offsets present in Lorentz-force magnetometers were prevented with a shielding electrode,whose efficiency is ***,several reliability test results are presented,which demonstrate the robustness against high temperatures,magnetic fields and acceleration shocks.

关键词： Lorentz magnetometer characterization