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| 1 | Conductivity structure and rheological property of lithosphere in Southern Tibet inferred from super-broadband magnetotelluric sounding显示文摘To understand deep lithosphere structure beneath the Qinghai-Tibet Plateau more comprehensively and objectively and to explore important scientific issues,such as characteristics of plateau lithospheric deformation,state of strain,thermal structure,plate (or terrane) movement,and crust-mantle rheology,it is necessary to research the variation of crust-mantle electrical structure in the east-west direction in every geological unit.For this purpose,six super-broadband magnetotelluric (MT) sounding profiles have been completed by INDEPTH-MT Project in the Himalayas-Southern Tibet.Based on the imaging results from the six profiles,three-dimensional electrical conductivity structure of the crust and upper mantle has been analyzed for the research area.The result shows that the high-conductivity layers in the middle and lower crust exist widely in Southern Tibet,which extend discontinuously for more than 1000 km in the east-west direction and become thinner,shallower and more resistive toward the big turning of the Yarlung Zangbo River.The discussion on the rheology of lithosphere in Southern Tibet suggests that the mid-lower crust there is of high electrical conductivity,implying the existence of 'partial-melt' and 'hot fluid' in the thick crust of Tibet,which make the medium hot,soft,and plastic,or even able to flow.Combining the experimental result of petrophysics and the MT data,we estimate the melting percentage of the crustal material to be up to 5%-14%,which would reduce the viscosity of aplite in the crust to meet the flow condition;but for granite,it is likely not enough to cause such a change in rheology. | Martyn UNSWORTH Alan G.JONES | 2010 | Science China Earth Sciences2010,53,2: | 11 |
| 2 | 准备好应用网络教育的明日教师(上)显示文摘全球网(www:World Wide Wde)对教育系统的潜在冲击几乎是无限的。然而,如果我们的教师不具备适当的应用网络的知识和技能,实现的冲击会比可能的要小。证据表明,我们的教师需要培训,以便能够有效利用强大的在线资源,培养我们的孩子在数字社会中自我发展的能力。本文的目的在于探讨基于网络的教学对教师教育计划的冲击。 | Deborah L.Lowther Marshall G.Jones Robert T.Plants 丁兴富 | 2003 | 开放教育研究2003,9,1: | 11 |
| 3 | Predicting the mode of flow in pneumatic conveying systems—A review显示文摘An initial prediction of the particulate mode of flow in pneumatic conveying systems is beneficial as this knowledge can provide clearer direction to the pneumatic conveying design process.There are three general categories of modes of flow,two dense flows:fluidised dense phase and plug flow,and dilute phase only.Detailed in this paper is a review of the commonly used and available techniques for predicting mode of flow.Two types of predictive charts were defined:basic particle parameter based(e.g.particle size and density)and air-particle parameter based(e.g.permeability and de-aeration).The basic particle techniques were found to have strong and weak areas of predictive ability,on the basis of a comparison with data from materials with known mode of flow capability.It was found that there was only slight improvement in predictive ability when the particle density was replaced by loose-poured bulk density in the basic parameter techniques.The air-particle-parameter-based techniques also showed well-defined regions for mode of flow prediction though the data set used was smaller than that for the basic techniques.Also,it was found to be difficult to utilise de-aeration values from different researchers and subsequently,an air-particle-based technique was developed which does not require any deaeration parameter in its assessment. | Mark G.Jones Kenneth C.Williams | 2008 | Particuology2008,6,5: | 11 |
| 4 | 声波激励的超小型纳机电系统磁电天线显示文摘当前的小型天线依赖于电磁波的谐振,因此天线的尺寸与电磁波波长相关。典型的天线尺寸大于波长的1/10,而进一步缩小天线尺寸在近十年来都是一个公开的挑战。介绍一种通过悬浮铁氧/压电薄膜异质结构的声波激励纳机械磁电天线。这种磁电天线通过其在声波谐振频率处的磁电效应接收和发射电磁波。磁电天线中的体声波激发铁磁薄膜的磁化振荡,产生电磁波的辐射;反之,天线感应电磁波的磁场,得到压电电压输出。这种磁电天线(尺寸仅为波长的千分之一)比现有小型天线的尺寸小1到2个数量级,但性能却没有降低,在便携式无线通信系统中具有很大的应用潜力。 | Tianxiang Nan Hwaider Lin Yuan Gao Alexei Matyushov Guoliang Yu Huaihao Chen Neville Sun Shengjun Wei Zhiguang Wang Menghui Li Xinjun Wang Amine Belkessam Rongdi Guo Brian Chen James Zhou Zhenyun Qian Yu Hui Matteo Rinaldi Michael E.McConney BrANDon M.Howe Zhongqiang Hu John G.Jones Gail J.Brown Nian Xiang Sun 张建强(翻译) 陈鼎鼎(审校) | 2017 | 通信对抗2017,36,4: | 8 |
| 5 | Determination of slug permeability factor for pressure drop prediction of slug flow pneumatic conveying显示文摘Current models for pressure drop prediction of slug flow pneumatic conveying in a horizontal pipeline system assume some type of steady state conditions for prediction,which limits their capability for increased predictive accuracy relative to experimental data.This is partly because of the nature of slug flow pneumatic conveying system,which,as a dynamic system,never becomes stable.By utilising conservation of mass(airflow),a dynamic pressure analysis model is proposed on the basis of the derivative of the upstream pressure behaviour.The rate of air permeation through slug,one of the important factors in the conservation model,is expressed as a function of a slug permeability factor.Other factors such as slug velocity,slug length and the fraction of stationary layer were also considered.Several test materials were conveyed in single-slug tests to verify the proposed pressure drop model,showing good agreement between the model and experimental results. | Kenneth C.Williams Mark G.Jones Tobias Krull | 2008 | Particuology2008,6,5: | 8 |
| 6 | 网络教育应用的5个层次及其相关因素显示文摘网络是教育技术中最具有发展前景的部分,然而,网络不是灵丹妙药,它并不适用于任何情形下的任何事物.所以让我们先暂且假设,网络不是教育技术的未来,而是教育的未来.尽管如此,我们仍未见到这一网络未来的曙光.目前接二连三开展的网络教育和培训,可能会导致两种结果:最好的情形是至多被人们视为不明智的举动,最差的情形则是--以网络现今的状态无法射出众望所归的教育'魔弹'时,那些突然间醒悟的大众们就将产生对抗性的反应了.我们的观点是网络在不远的将来乃至遥远的未来都将发挥它难以置信的功能价值.而目前只要使用恰当的话也会非常有用.要达到这一目标,部分取决于网络技术的未来,部分则取决于我们如何来实施这一教育技术.但我们对它在教育中的具体实施却有极大的主动权. | Stephen W.Harmon Marshall G.Jones 杨志珍 | 2001 | 中国电化教育2001,,6: | 5 |
| 7 | Characterization of the gas pulse frequency,amplitude and velocity in non-steady dense phase pneumatic conveying of powders显示文摘Current modelling techniques for the prediction of conveying line pressure drop in low velocity dense phase pneumatic conveying are largely based on steady state analyses.Work in this area has been on-going for many years with only marginal improvements in the accuracy of prediction being achieved.Experimental and theoretical investigations undertaken by the authors suggest that the flow mechanisms involved in dense phase conveying are dominated by transient effects rather than those of steady state and are possibly the principal reasons for the limited improvement in accuracy.This paper reports on investigations on the pressure fluctuation behaviour in dense phase pneumatic conveying of powders.The pressure behaviour of the gas flow in the top section of the pipeline was found to exhibit pulsatile oscillations.In particular,the pulse velocity showed variation in magnitude while the frequency of the oscillations rarely exceeded 5 Hz.A wavelet analysis using the Daubechie 4 wavelet found that the amplitude of the oscillations increased along the pipeline.Furthermore,there was significant variation in gas pulse amplitude for different types of particulate material. | Kenneth C.Williams Mark G.Jones Ahmed A.Cenna | 2008 | Particuology2008,6,5: | 4 |
| 8 | 地震属性图及其在北海盆地构造解释和断层封堵性分析中的应用显示文摘地震属性图(倾角、方位角、反射振幅等)对于构造地质分析是一种较新的方法(Bouvier等,1989;Dalley等,1989;Ruijtenberg等,1990;Hoetz和Watters,1992)。在石油工业中,无论是进行区域构造线作图(Oudmayer和De Jager,1993;Demyttenaere等,1993)。 | G.Jones R.J.Knipe 徐振宏 | 1998 | 国外油气勘探1998,10,4: | 2 |
| 9 | 酶基一次性生物传感器和相关电极的电化学特性研究显示文摘本研究课题的目的在于探索一种基于厚膜技术的一次性酶电极批量生产的可能途径。研究工作分成三部分:1)以酶电极批量生产为研究目标的一次性碳电极的开发;2)与碳基电极配合使用的一次性Ag/AgCl参比电极的制作,以期能批量生产具有实用价值的一次性电极条;3)碳糊电极的动力学研究。 | 周道民 John G.Jones | 1996 | 化学传感器1996,16,1: | 2 |
| 10 | Using a Game to Engage Stakeholders in Extreme Event Attribution Science显示文摘The impacts of weather and climate-related disasters are increasing,and climate change can exacerbate many disasters.Effectively communicating climate risk and integrating science into policy requires scientists and stakeholders to work together.But dialogue between scientists and policymakers can be challenging given the inherently multidimensional nature of the issues at stake when managing climate risks.Building on the growing use of serious games to create dialogue between stakeholders,we present a new game for policymakers called Climate Attribution Under Loss and Damage:Risking,Observing,Negotiating(CAULDRON).CAULDRON aims to communicate understanding of the science attributing extreme events to climate change in a memorable and compelling way,and create space for dialogue around policy decisions addressing changing risks and loss and damage from climate change.We describe the process of developing CAULDRON,and draw on observations of players and their feedback to demonstrate its potential to facilitate the interpretation of probabilistic climate information and the understanding of its relevance to informing policy.Scientists looking to engage with stakeholders can learn valuable lessons in adopting similar innovative approaches.The suitability of games depends on the policy context but,if used appropriately,experiential learning can drive coproduced understanding and meaningful dialogue. | Hannah R.Parker Rosalind J.Cornforth Pablo Suarez Myles R.Allen Emily Boyd Rachel James Richard G.Jones Friederike E.L.Otto Peter Walton | 2016 | International Journal of Disaster Risk Science2016,7,4: | 1 |
| 11 | Knowledge management:a strategic agenda显示文摘 | P.Quitas P.Lafrere G.Jones | | 0,,03: | 1 |
| 12 | Civil-GIS incorporated approach for water resource management in a developed catchment for urban-geomorphic sustainability:Tallowa Dam,southeastern Australia显示文摘Damming rivers causes two main problems affecting a river's geomorphic ecosystem and its water quality.The Tallowa Dam on the Shoalhaven River in southeastern NSW,Australia,provides a case study to find the best sustainable solutions to avoid these problems.The project uses a civil-infrastructure idea to design a grid of collector pipes from the reservoir bottom surface.Spatial data analysis using ArcGIS 10.2 is used to determine the best grid location for the pipes in the reservoir.Water and sediment samples have been analysed for grain size,heavy metal and organic matter contents.The dam has led to a significant decline in sediment transport and water discharge to the lower reaches of the river which has resulted in greater erosion of sediment and higher salinity rates within the lower river and coastal streams.Water quality in the reservoir has been affected by increased sediment accumulation,particularly mud,which has increased the amount of heavy metal and nutrient pollution that could eventually affect the water users.A proposed solution is to use over-storage water to remove accumulated sediment from the base of the dam through a net of collector pipes controlled by automechanical gates,instead of flowing over the top of the dam.This would maximize the volume of upstream sediment and contained pollutants that can be released from the reservoir into the downstream river ecosystems as well as providing better water quality and a longer water storage time. | Ali K.M.Al-Nasrawi Brian G.Jones Yasir M.Alyazichi Sarah M.Hamylton Mohammed T.Jameel Ali Faraj Hammadi | 2016 | International Soil and Water Conservation Research2016,4,4: | 1 |
| 13 | Field Phenomics:Will It Enable Crop Improvement?显示文摘Field phenomics has been identified as a promising enabling technology to assist plant breeders with the development of improved cultivars for farmers.Yet,despite much investment,there are few examples demonstrating the application of phenomics within a plant breeding program.We review recent progress in field phenomics and highlight the importance of targeting breeders’needs,rather than perceived technology needs,through developing and enhancing partnerships between phenomics researchers and plant breeders. | David M.Deery Hamlyn G.Jones | 2021 | Plant Phenomics2021,3,1: | 1 |
| 14 | Lithospheric Electrical Structure across the Eastern Segment of the Altyn Tagh Fault on the Northern Margin of the Tibetan Plateau显示文摘Project INDEPTH(Inter National DEep Profiling of Tibet and the Himalaya) is an interdisciplinary program designed to develop a better understanding of deep structures and mechanics of the Tibetan Plateau. As a component of magnetotelluric(MT) work in the 4th phase of the project, MT data were collected along a profile that crosses the eastern segment of the Altyn Tagh fault on the northern margin of the plateau. Time series data processing used robust algorithms to give high quality responses. Dimensionality analysis showed that 2D approach is only valid for the northern section of the profile. Consequently, 2D inversions were only conducted for the northern section, and 3D inversions were conducted on MT data from the whole profile. From the 2D inversion model, the eastern segment of the Altyn Tagh fault only appears as a crustal structure, which suggests accommodation of strike slip motion along the Altyn Tagh fault by thrusting within the Qilian block. A large-scale off-profile conductor within the mid-lower crust of the Qilian block was revealed from the 3D inversion model, which is probably correlated with the North Qaidam thrust belt. Furthermore, the unconnected conductors from the 3D inversion model indicate that deformations in the study area are generally localized. | ZHANG Letian YE Gaofeng JIN Sheng WEI Wenbo Martyn UNSWORTH Alan G.JONES JING Jianen DONG Hao XIE Chengliang Florian LE PAPE Jan VOZAR | 2015 | Acta Geologica Sinica(English Edition)2015,89,1: | 1 |
| 15 | It Takes the Villages:Bringing Change from Below in Afghanistan显示文摘 | Seth G.Jones | | 0,,03: | 1 |
| 16 | Very high resolution interpolated climate surfaces for global land areas显示文摘 | Robert J.Hijmans Susan E.Cameron Juan L.Parra Peter G.Jones AndyJarvis | 2005 | Int J Climatol2005,,15: | 1 |
| 17 | The Pushtashan juvenile suprasubduction zone assemblage of Kurdistan (northeastern Iraq): A Cretaceous (Cenomanian) Neo-Tethys missing link显示文摘The Pushtashan suprasubduction zone assemblage of volcanic rocks, gabbros, norites and peridotites occurs in the Zagros suture zone, Kurdistan region, northeastern Iraq. Volcanic rocks are dominant in the assemblage and consist mainly of basalt and basaltic andesite flows with interlayered red shale and limestone horizons. Earlier lavas tend to be MORB-like, whereas later lavas display island arc tholeiite to boninitic geochemical characteristics. Tholeiitic gabbros intrude the norites and display fractionation trends typical of crystallisation under low-pressure conditions, whereas the norites display calc-alkaline traits, suggesting their source included mantle metasomatised by fluids released from subducted oceanic crust. Enrichment of Rb, Ba, Sr, Th and the presence of negative Nb anomalies indicate generation in a suprasubduction zone setting. Trondhjemite and granodiorite intrusions are present in the volcanic rocks, gabbros and norites. SHRIMP U-Pb dating of magmatic zircons from a granodiorite yields a mean^(206)Pb/^(238)U age of 96.0 ±2.0 Ma(Cenomanian). The initial ε_(Hf) value for the zircons show a narrow range from +12.8 to+15.6, with a weighted mean of + 13.90±0.96. This initial value is within error of model depleted mantle at 96 Ma or slightly below that, in the field of arc rocks with minimal contamination by older continental crust. The compositional bimodality of the Pushtashan suprasubduction sequence suggests seafloor spreading during the initiation of subduction, with a lava stratigraphy from earlyerupted MORB transitioning into calc-alkaline lavas and finally by 96 Ma intrusion of granodioritic and trondhjemitic bodies with juvenile crustal isotopic signatures. The results confirm another Cretaceous arc remnant preserved as an allochthon within the Iraqi segment of the Cenozoic Zagros suture zone. Implications for the closure of Neo-Tethys are discussed. | Sabah A.Ismail Sarmad A.Ali Allen P.Nutman Vickie C.Bennett Brain G.Jones | 2017 | Geoscience Frontiers2017,8,5: | 0 |
| 18 | Dysregulated bidirectional epithelial-mesenchymal crosstalk:A core determinant of lung fibrosis progression显示文摘Progressive lung fibrosis is characterized by dysregulated extracellular matrix(ECM)homeostasis.Understand-ing of disease pathogenesis remains limited and has prevented the development of effective treatments.While an abnormal wound-healing response is strongly implicated in lung fibrosis initiation,factors that determine why fi-brosis progresses rather than regular tissue repair occur are not fully explained.Within human lung fibrosis,there is evidence of altered epithelial and mesenchymal populations as well as cells undergoing epithelial-mesenchymal transition(EMT),a dynamic and reversible biological process by which epithelial cells lose their cell polarity and down-regulate cadherin-mediated cell-cell adhesion to gain migratory properties.This review will focus on the role of EMT and dysregulated epithelial-mesenchymal crosstalk in progressive lung fibrosis. | Liudi Yao Zijian Xu Donna E.Davies Mark G.Jones Yihua Wang | 2024 | Chinese Medical Journal Pulmonary and Critical Care Medicine2024,2,1: | 0 |
| 19 | A qualitative study on the pulsatile flow phenomenon in a dense fly ash pneumatic conveyor显示文摘Understanding of the dynamic particulate flow structures within a dense gas-fly ash pneumatic conveyor must be improved in order to better aid its design guidance.The complex pulsatile movement of the gas-fly ash mixture dominates the flow performance within the pipeline,and historically,non-invasive measurement devices such as the electrical capacitance tomography(ECT) were often used to sufficiently capture the flow dynamics.However,inadequate studies have been conducted on the pulsatile flow phenomenon,which directly relate to the gas-fly ash two-phase flow performance.This paper aims to investigate the pulsatile flows using an ECT device.Initially,pulsatile flow patterns under various experimental conditions were obtained through ECT.Pulses within a flow were then characterised into pulse growth and decay segments,which represent the superficial fluidisation and deaeration processes during conveying.Subsequently,structural and statistical analyses were performed on the pulse growth and decay segments.Results suggested that the increasing air mass flow rate led to the decrease of the superficial fluidisation/deaeration magnitude,however,the increase of the superficial fluidisation/deaeration durations.Also,the air mass flow rate was indicated as the dominant factor in determining the pulsing statistical parameters.This research provides fundamental insights for further modelling the dense fly ash pneumatic flows. | Wei Chen Kenneth C.Williams Isabel Jabs Mark G.Jones | 2014 | Particuology2014,12,6: | 0 |
| 20 | 跨国公司国界的历史演变显示文摘经历几个世纪的纠缠不清,跨国公司的国界问题仍然存在较多暧昧和复杂。19世纪大量的国际商业都是世界性的。进入20世纪,世界性资本主义逐渐被更清晰的国家身份取代。二战后,跨国公司的各国子公司体现出更强的地方色彩。 | Geoffrey G.Jones 董姗姗(翻译) | 2009 | 北大商业评论2009,,3: | 0 |