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Acta Metallurgica Sinica(English Letters) 2022年第1期35卷 49-66页

作者： Guang Zeng Shiqian Liu Qinfen Gu Zebang Zheng Hideyuki Yasuda stuart D.mcdonald Kazuhiro Nogita School of Materials Science and Engineering Central South UniversityChangsha 410083China Nihon Superior Centre for the Manufacture of Electronic Materials(NS CMEM) School of Mechanical and Mining EngineeringThe University of QueenslandBrisbaneQLD 4072Australia Graduate School Shenzhen Technology UniversityShenzhen 515118China Australian Synchrotron ANSTO.800 Blackburn RdClaytonVIC 3168Australia State Key Laboratory of Solidification Processing School of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi’an 710072China Department of Materials Science and Engineering Kyoto UniversitySakyo‑kuKyoto 606‑8501Japan

It is widely accepted that further development of Pb-free solder alloys for improved processing and in-service properties of next-generation electronics,can be accelerated through a fundamental understanding of phase transformation and microstructure control in Pb-free solder *** characterization techniques including synchrotron radiation provide a comprehensive toolset to measure the composition,crystallography,morphology,and properties of the major components of solder *** research using such techniques is reviewed in detail including the characterization of the eff ects of microalloy additions on the microstructure and properties of Pb-free solder joints,especially those on the intermetallic *** discoveries outlined are of scientific and industrial relevance and have implications for new solder alloy composition design and the reliability of lead-free solder joints.

关键词： Cu_(6)Sn_(5)intermetallic Synchrotron radiation Solidification Phase transformation

Squamous cell carcinoma after radiofrequency ablation for Barrett's dysplasia

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World Journal of Gastroenterology 2014年第15期20卷 4453-4456页

作者： Sebastian S Zeki Rehan Haidry Manuel Justo-Rodriguez Laurence B Lovat Nicholas A Wright stuart a mcdonald Centre for Tumour Biology Bart’s Cancer InstituteLondon EC1M 6BQUnited Kingdom Research Department of General Surgery University College LondonLondon WC1E 6BTUnited Kingdom Department of Pathology University College LondonLondon WC1E 6BTUnited Kingdom

Barrett’s oesophagus(BO)is a usually indolent condition that occasionally requires endoscopic *** ablation(RFA)is an effective endoscopic treatment for high grade dysplasia(HGD)and intramucosal cancer in *** has a good efficacy,durability and safety profile although complications can *** we describe a case of RFA in a patient with high grade *** the response to treatment was initially very good with the development of neosquamous epithelium,the patient very rapidly developed a squamous cell cancer of the oesophagus confirmed on radiology,histology and *** sequencing confirmed that the original HGD and the squamous cell cancer(SCC)were derived from separate clonal *** report highlights the fact that SCC of the oesophagus has been noted after endoscopic ablation for BO previously and suggest that ablation of BO may encourage the clonal expansion of cells carrying carcinogenic mutations once a dominant clonal population has been eradicated.

关键词： Squamous carcinoma oesophagus Barrett's oesophagus Radiofrequency ablation Squamous cell cancer High grade dysplasia

Neurological heterotopic ossification:novel mechanisms,prognostic biomarkers and prophylactic therapies

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Bone Research 2020年第4期8卷 379-392页

作者： Ker Rui Wong Richelle Mychasiuk Terence J.O’Brien Sandy R.Shultz stuart J.mcdonald Rhys D.Brady Department of Neuroscience Central Clinical SchoolMonash UniversityMelbourneVICAustralia Department of Medicine Royal Melbourne HospitalThe University of MelbourneParkvilleVICAustralia Department of Physiology Anatomy and MicrobiologySchool of Life SciencesLa Trobe UniversityBundooraVICAustralia

Neurological heterotopic ossification(NHO)is a debilitating condition where bone forms in soft tissue,such as muscle surrounding the hip and knee,following an injury to the brain or spinal *** abnormal formation of bone can result in nerve impingement,pain,contractures and impaired *** are often diagnosed with NHO after the bone tissue has completely mineralised,leaving invasive surgical resection the only remaining treatment *** resection of NHO creates potential for added complications,particularly in patients with concomitant injury to the central nervous system(CNS).Although recent work has begun to shed light on the physiological mechanisms involved in NHO,there remains a significant knowledge gap related to the prognostic biomarkers and prophylactic treatments which are necessary to prevent NHO and optimise patient *** article reviews the current understanding pertaining to NHO epidemiology,pathobiology,biomarkers and treatment *** particular,we focus on how concomitant CNS injury may drive ectopic bone formation and discuss considerations for treating polytrauma patients with *** conclude that understanding of the pathogenesis of NHO is rapidly advancing,and as such,there is the strong potential for future research to unearth methods capable of identifying patients likely to develop NHO,and targeted treatments to prevent its manifestation.

关键词： such has likely

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平面广告:与电视广告不分伯仲

广告主 2007年第12期 70-72页

作者： Robert Heath stuart mcdonald 全智

平面广告不仅比电视广告省钱得多,而且在塑造强大品牌上与电视广告具有同样的能力,在引起注意和传达信息上更比电视广告技高一筹。

关键词：电视广告平面广告省钱品牌

SYSTEMIC SOLUTIONS FOR SYSTEMIC PROBLEMS

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Journal of Systems Science and Systems Engineering 2017年第3期26卷 269-286页

作者： stuart Umpleby Department of Management School of Business George Washington University USA

The systems sciences and cybernetics emerged in the years after World War II. These fields created many new approaches to engineering and management and contributed new ideas to existing academic fields. The new fields also identified similar concepts across a range of fields and began to create a general theory of systems. In addition the systems sciences created a variety of methods for managing complex systems, for example logistics, operations research and computer simulations. In the 1970s there was concern about population and environment balance. Currently there is increasing concern with governance, since the rate of presentation of problems seems to be greater than the ability of our institutions to manage them. This paper will discuss the history of systems science and cybernetics, the questions formulated and the solutions proposed, the difficulties encountered in Finding a home within contemporary universities and some exciting lines of research now underway.

关键词： General systems theory cybernetics systems engineering complexity epistemology

REFLECTIONS ON SYSTEMIC PROBLEMS AND SOLUTIONS

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Journal of Systems Science and Systems Engineering 2017年第3期26卷 265-268页

作者： stuart A. Umpleby Department of Management The George Washington University Washington DC20052 USA

This special issue of JSSSE contains papers presented at a conference at the University of Sichuan in Chengdu, China, in October, 2015. The papers provide an indication of how the fields of systems science and cybernetics have evolved in recent decades. This preface briefly describes the context in which systems science and cybernetics have evolved.

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The Physics Underlying Gutenberg-Richter in the Earth and in the Moon

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Journal of Earth Science 2015年第1期26卷 134-139页

作者： stuart Crampin Yuan Gao British Geological Survey Edinburgh EH9 3LAScotland UK School of Geosciences University of Edinburgh EH9 3FWScotland UK Institute of Earthquake Science China Earthquake Administration

The linear Gutenberg-Richter relationship is well-established. In any region of the Earth, the logarithm of the number of earthquakes, greater than any magnitude, is proportional to magnitude. This means that the underlying physics is non-linear and not purely elastic. This nonlinear physics has not been resolved. Here we suggest that a new understanding of fluid-rock deformation provides the physics underlying Gutenberg-Richter： where the fluid-saturated microcracks in almost all in situ rocks are so closely-spaced that they verge on failure and fracture, and hence are critical-systems which impose fundamentally-new properties on conventional sub-critical geophysics. The observation of linear Gutenberg-Richter relationship in moonquakes suggests that residual fluids exist at depth in the Moon.

关键词： critical-system Gutenberg-Richter relationship New Geophysics residual fluid inmoonquake shear-wave splitting shear-wave time-delay.

Theoretical study and optimization of a high power mid-infrared erbium-doped ZBLAN fibre laser

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Chinese Physics B 2011年第3期20卷 239-246页

作者：李剑峰 stuart D.Jackson School of Optoelectronic Information University of Electronic Science and Technology of China Institute of Photonics and Optical Science School of PhysicsUniversity of Sydney

Based on the rate equations describing the erbium-doped fluoride glass （ZBLAN） fibre lasers with different pumping configurations being taken into account, this paper presents theoretical calculations related to the dynamic population density and the operation performance of a high power mid-infrared all-fibre erbium-doped ZBLAN fibre laser. It shows that the ground-state absorption, excited-state absorption and energy-transfer-upconversion processes co-exist and produce a population balance, causing the laser to operate stably at a continuous wave state. A good agreement between the theoretical results and recent experimental measurement is obtained. Furthermore, the laser structure parameters including fibre length, reflectance of output fibre Bragg grating and pumping configurations are quantitatively optimised to achieve the best performance. The results show, as expected, that the slope efficiency of the fibre laser can be improved significantly through optimisation, which then provides an important guide for the design of high-performance mid-infrared erbium-doped ZBLAN fibre lasers.

关键词： Lerbium-doped fibre laser mid-infrared fibre laser ZBLAN fibre rate equations

Cryogenic wedges on the NE Qinghai-Tibet and Ordos Plateaus:Their characteristics,origin and OSL dating

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Research in Cold and Arid Regions 2021年第6期13卷 463-473页

作者： stuart A.Harris Department of Geography University of CalgaryCalgaryAlbertaT2N 1N4Canada

Cryogenic wedges developed due to very cold,rather arid conditions during the maximum of the last cold event when the drying up of the neighboring China Sea resulted in the failure of the East Asian *** the climate ameliorated and the Monsoon rains reappeared,ice-wedges *** warming permitted thawing of the ice infillings accompanied by replacement of the ice by sediments partly from the host ground as well as from the surface by wind or sheet *** cases of extreme surface water flow on slopes after 10 ka B.P.,small baydjarakhs typically c.50 cm high developed,only to have the resulting hollows infilled by sediments carried by wind and/or sheet *** shallow structures form a network on top of many of the cryogenic *** complex history makes dating the ages of the wedges difficult using OSL ***,past field work ignored the problem of the angle of the cut face to the direction of the wedge infilling when sampling the contents of the narrow wedges,resulting in potential contamination of the samples with the host *** of the larger deposits should be alright,but the likelihood of contamination makes the interpretation of the resulting OSL dates from the narrow wedges *** wedges consisting of primary mineral infillings should still have similar OSL dates with depth for a given wedge,but the distinction between ice-wedge infillings and soil wedges is difficult since both can exhibit older dates of the infillings with *** available data suggests that ice-wedges were significantly more common than sediment-filled primary wedges.A protocol to avoid having to obtain large numbers of OSL dates by more careful field sampling and the use of grain size determinations is provided in the Appendix.

关键词： cryogenic wedges OSL dating NE Qinghai-Tibet Plateau differentiation of primary and secondary wedges baydjarakhs in arid climates

Seismic Imaging of Complex Structures in the Tarim Basin

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Journal of Earth Science 2015年第4期26卷 586-591页

作者： Ning Guo Chao Wu stuart Fagin Geo Tech Groups LLC Institute of Exploration and Development CPNCKorla Geo Image Resources LLC

Conventional time imaging techniques are not capable of producing accurate seismic imaging of the subsurface in the mountain front of the Tarim Basin, China. Their imaged structures have led to some major drilling failures before, bearing a disrepute that ＂their structural closures have wheels and their structural highs have springs＂. This article first lists the imaging challenges, and explains in a schematic why the time imaging techniques fail in this area. Then through a series of real data examples, it demonstrates that when there exist lateral velocity variations, depth imaging is the only solution to tackle the imaging challenges in this area. Depth imaging accounts for the complexity of the wavefield, therefore produces superior and geological plausible images. The core task in properly performing depth imaging is building the velocity model. This article stresses some the main aspects in this regard.

关键词： time migration depth migration seismic image quality velocity model building anisotropy.