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Fulmar油田的时延地震分析

石油物探译丛 1999年第2期 42-51页

作者： david h.johnston 杨卫东中国新星石油公司西北石油局规划院

本报告讨论北海中部Fulmar油田时延地震数据的分析结果。这项研究旨在评价时延地震技术在用传统数据进行油藏内流体运移和压力变化监测方面的潜力。选择Fulmar油田作为时延地震研究实例有下列几方面的原因: 该油田有两套三维地震数据集... 详细信息

本报告讨论北海中部Fulmar油田时延地震数据的分析结果。这项研究旨在评价时延地震技术在用传统数据进行油藏内流体运移和压力变化监测方面的潜力。选择Fulmar油田作为时延地震研究实例有下列几方面的原因: 该油田有两套三维地震数据集,一套是在生产前采集的。

关键词：四维地震模拟模型地震勘探 Fulmar油田

用地震老资料进行综合时间推移研究:墨西哥湾Lena油田

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国外油气勘探 2000年第6期12卷 713-724页

作者： david h.johnston 朱衍镛

地震监测(时间推移或4-D地震)在增加现有油田和新油田的收率上有极大潜力。虽然未来油田应从为时间推移监测设计的地震采集中受益,但对大多数石油公司,当前地震监测机会的情况为:现有油田已经采集了一次或多次3-D勘探数据。这些老的地... 详细信息

地震监测(时间推移或4-D地震)在增加现有油田和新油田的收率上有极大潜力。虽然未来油田应从为时间推移监测设计的地震采集中受益,但对大多数石油公司,当前地震监测机会的情况为:现有油田已经采集了一次或多次3-D勘探数据。这些老的地震数据集并不是为地震监测目的而采集的,而且还因采集和处理参数不同常常差别很大。此外,地震采集所选择的时间很少针对使最优地作出油藏变化的平面图或影响到开发决策。地震数据在数据体的非储层部分的重复性以及储层中地震差异异常的稳健性和可信性是在时间推移分析中应用老数据的关键问题。另一个问题是。

关键词：油气藏监测地震资料综合时间推移地震数据

Thin Film Photovoltaic/Thermal Solar Panels

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电工电能新技术 2008年第3期27卷 1-8页

作者： david johnston Power and Control Research Group School of Computing Engineering and Ihformation Sciences University of Northumbria at Newcastle NE1 8ST UK

A solar panel is described,in which thin films of semiconductor are deposited onto a metal *** semiconductor-metal combination forms a thin film photovoltaic cell,and also acts as a reflector-absorber tandem,which acts as a solar selective surface,thus enhancing the solar thermal performance of the collector *** use of thin films reduces the distance heat is required to flow from the absorbing surface to the metal plate and heat exchange *** modelling demonstrated that,by suitable choice of materials,photovoltaic efficiency can be maintained,with thermal performance slightly reduced,compared to that for thermal-only *** grading the absorber layer-to reduce the band gap in the lower region-the thermal performance can be improved,approaching that for a thermal-only solar panel.

关键词：太阳能技术光电性能收集板半导体

Organic Fuel Synthesis from Atmospheric Carbon Dioxide and hydrogen Produced from Water by Electrolysis

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电工电能新技术 2009年第3期28卷 6-10,66页

作者： david johnston Power and Energy Research Group School of EngineeringUniversity of Northumbria at Newcastle

Synthesis of organic fuels from carbon dioxide and hydrogen is analysed,in terms of energy recovery efficiency,and the required energy input for electrolysis of *** electrical energy is related to the thermal energy required in a power station.A method is described to recover heat from energy-producing reactions in the fuel synthesis process,which can then be used to reduce the electrical energy requirement for *** co-locating the fuel synthesis plant with a thermal power station,primary(thermal) energy can be used to produce high temperature steam,with a lower electrical requirement for electrolytic production of *** can make more efficient use of the primary energy than a thermodynamic *** is made with alternative fuels,in terms of energy budget,sustainability,carbon dioxide emissions,*** energy security benefits of advanced fuel synthesis are also identified.

关键词：燃料二氧化碳氢电解

Evaluating Land Use and Emergency Management Plans for Natural hazards as a Function of Good Governance:A Case Study from New Zealand

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International Journal of Disaster Risk Science 2015年第1期6卷 62-74页

作者： Wendy Saunders Emily Grace James Beban david johnston GNS Science School of Psychology Massey University Joint Centre of Disaster ResearchMassey University

Plan evaluation is of utmost importance as a function of good governance. It provides a means to improve the institutional basis for implementing land use controls, provides an important opportunity to improve future plans to reduce risk, and improves the vision for sustainable development and management. This article provides an overview of the methods and findings of a plan evaluation project undertaken in New Zealand. The project analyzed 99 operative plans, provided in-depth analysis of ten plans, and included a capability and capacity study of councils. This is the first time all operative plans in New Zealand have had their natural hazard provisions assessed in this manner. The information provides an important baseline for future policy improvements, and a basis for future research and policy directions. The project found that, while New Zealand land use plans appear to be improving over time, there are still opportunities for improvement. These include improving linkages between objectives, policies, and rules within land use plans; and strengthening the linkages between land use and emergency management plans. The largest challenge is the accessibility, understanding of, and updating of hazard information.

关键词： Emergency management plans Land use plans Natural hazards New Zealand Plan evaluation

Modified Usability Framework for Disaster Apps:A Qualitative Thematic Analysis of User Reviews

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International Journal of Disaster Risk Science 2020年第5期11卷 615-629页

作者： Marion Lara Tan Raj Prasanna Kristin Stock Emma EhDoyle Graham Leonard david johnston Joint Centre for Disaster Research Massey UniversityWellington 6021New Zealand School of Natural and Computational Sciences Massey UniversityAlbany 0632New Zealand GNS Science AvalonLower Hutt 5010New Zealand

The public has access to a range of mobile applications(apps)for ***,there has been limited academic research conducted on disaster apps and how the public perceives their *** study explores end-users'perceptions of the usability of disaster *** proposes a conceptual framework based on insights gathered from thematically analyzing online *** study identifies new usability concerns particular to disaster apps'use:(1)content relevance depends on the app's purpose and the proximate significance of the information to the hazard event's time and location;(2)app dependability affects users'perceptions of usability due to the lifesafety association of disaster apps;(3)users perceive advertisements to contribute to their cognitive load;(4)users expect apps to work efficiently without unnecessary consumption of critical phone resources;(5)appropriate audio interface can improve usability,as sounds can boost an app's alerting aspect;and,finally(6)in-app browsing may potentially enhance users'impression of the structure of a disaster *** a result,this study argues for focussed research and development on public-facing disaster *** research should consider the conceptual framework and concerns presented in this study when building design guidelines and theories for disaster apps.

关键词： Disaster apps End-user perspective human-computer interaction Usability

Silk-based nerve guidance conduits with macroscopic holes modulate the vascularization of regenerating rat sciatic nerve

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Neural Regeneration Research 2025年第6期20卷 1789-1800页

作者： Carina hromada Patrick heimel Markus Kerbl LászlóGál Sylvia Nürnberger Barbara Schaedl James Ferguson Nicole Swiadek Xavier Monforte Johannes C.heinzel Antal Nógrádi Andreas h.Teuschl-Woller david hercher Department Life Science Engineering University of Applied Sciences Technikum WienViennaAustria Austrian Cluster for Tissue Regeneration ViennaAustria Ludwig Boltzmann Institute for Traumatology The Research Center in Cooperation with AUVAViennaAustria University Clinic of Dentistry Medical University of ViennaViennaAustria Department of Plastic Reconstructive and Aesthetic SurgeryLandesklinikum Wiener Neustadt2700 Wiener NeustadtAustria Department of Anatomy Histology and EmbryologyAlbert Szent-Györgyi Medical SchoolUniversity of SzegedSzegedHungary Medical University of Vienna Department of Orthopedics and Trauma SurgeryDevision of Trauma SurgeryViennaAustria Department of hand- PlasticReconstructive and Burn SurgeryBG Unfallklinik TuebingenUniversity of TuebingenTuebingenGermany

Peripheral nerve injuries induce a severe motor and sensory deficit. Since the availability of autologous nerve transplants for nerve repair is very limited, alternative treatment strategies are sought, including the use of tubular nerve guidance conduits(tNGCs). however, the use of tNGCs results in poor functional recovery and central necrosis of the regenerating tissue, which limits their application to short nerve lesion defects(typically shorter than 3 cm). Given the importance of vascularization in nerve regeneration, we hypothesized that enabling the growth of blood vessels from the surrounding tissue into the regenerating nerve within the tNGC would help eliminate necrotic processes and lead to improved regeneration. In this study, we reported the application of macroscopic holes into the tubular walls of silk-based tNGCs and compared the various features of these improved silk^(+) tNGCs with the tubes without holes(silk^(–) tNGCs) and autologous nerve transplants in an 8-mm sciatic nerve defect in rats. Using a combination of micro-computed tomography and histological analyses, we were able to prove that the use of silk^(+) tNGCs induced the growth of blood vessels from the adjacent tissue to the intraluminal neovascular formation. A significantly higher number of blood vessels in the silk^(+) group was found compared with autologous nerve transplants and silk^(–), accompanied by improved axon regeneration at the distal coaptation point compared with the silk^(–) tNGCs at 7 weeks postoperatively. In the 15-mm(critical size) sciatic nerve defect model, we again observed a distinct ingrowth of blood vessels through the tubular walls of silk^(+) tNGCs, but without improved functional recovery at 12 weeks postoperatively. Our data proves that macroporous tNGCs increase the vascular supply of regenerating nerves and facilitate improved axonal regeneration in a short-defect model but not in a critical-size defect model. This study suggests that further optimizatio

关键词： axon regeneration blood vessel functional recovery macroporous nerve lesion peripheral nerve repair sciatic nerve silk-based nerve guidance conduit vascularization

The Katanin Microtubule Severing Protein in Plants

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Journal of Integrative Plant Biology 2007年第8期49卷 1174-1182页

作者： david h.Burk Department of Plant Biology University of GeorgiaAthensGeorgia 30602USA

Katanin is a heterodimeric microtubule （MT） severing protein that uses energy from ATP hydrolysis to generate internal breaks along MTs. Katanin p60, one of the two subunits, possesses ATPase and MT-binding/severing activities, and the p 80 subunit is responsible for targeting of katanin to certain subcellular locations. In animals, katanin plays an important role in the release of MTs from their nucleation sites in the centrosome. It is also involved in severing MTs into smaller fragments which can serve as templates for further polymerization to increase MT number during meiotic and mitotic spindle assembly. Katanin homologs are present in a wide variety of plant species. The Arabidopsis katanin homolog has been shown to possess ATP-dependent MT severing activity in vitro and exhibit a punctate localization pattern at the cell cortex and the perinuclear region. Disruption of katanin functions by genetic mutations causes a delay in the disappearance of the perinuclear MT array and results in an aberrant organization of cortical MTs in elongating cells. Consequently, katanin mutations lead to defects in cell elongation, cellulose microfibril deposition, and hormonal responses. Studies of katanin in plants provide new insights into our understanding of its roles in cellular functions.

关键词： katanin microtubules microtubule severing protein.

On-Line Independent Tap-Changing of Each Feeder Supplied by a Low Voltage Distribution Transformer

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Journal of Power and Energy Engineering 2014年第4期2卷 388-394页

作者： david johnston Faculty of Engineering and Environment Northumbria University Newcastle upon Tyne UK

An on-line tap-changing circuit was developed for use with low voltage transformers (10 kV/380 V, or equivalent), in which the tap positions could be set independently for each low voltage feeder. This allows for possible variation in loads and distributed generation between different feeders fed from a given transformer, allowing the line voltages to be kept within limits on all feeders. A combination of computer simulation and practical experiments was used. A model constructed in Excel gave preliminary results, which was used to specify a more detailed model in Matlab? Simulink. A small-scale 220/380 V distribution network was constructed, with currents limited to 5 A per phase. Finally, a rotary switch was constructed, suitable for currents up to 500 A, which would be required for a full-scale low voltage distribution network. The results showed that the voltage could be kept within limits, even with a large difference in load and distributed generation from one feeder to another.

关键词： Tap-Changing On-Line Feeders Independent