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微电脑世界 2011年第6期 92-92页

作者： paul ashwood

当今,全球业务在互联的速度下运营。劳动力的全球化转变了工作方式。消费者拥有更全面的信息、受到更好的教育,并且更了解产品和服务,而无线和尖端技术的爆发式增长更提高了他们的期望值。这些不断变化的环境为全球企业业务应用带来了... 详细信息

当今,全球业务在互联的速度下运营。劳动力的全球化转变了工作方式。消费者拥有更全面的信息、受到更好的教育,并且更了解产品和服务,而无线和尖端技术的爆发式增长更提高了他们的期望值。这些不断变化的环境为全球企业业务应用带来了巨大压力。而软件缺陷所造成的关键应用故障每小时将会为企业造成数百万美元的收入损失。

关键词：软件测试浪费 IT 业务应用尖端技术软件缺陷全球化劳动力

Emerging insights into the function of very long chain fatty acids at cerebellar synapses

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Neural Regeneration Research 2025年第6期20卷 1709-1710页

作者： Martin-paul Agbaga Mohiuddin Ahmad Department of Cell Biology and Ophthalmology University of Oklahoma Health Sciences Centerand Dean McGee Eye InstituteOklahoma CityOKUSA

Very long chain-saturated and-polyunsaturated fatty acids(VLC-SFA and VLC-PUFA, respectively) are a functionally important class of fatty acids containing 28 carbons or more in their acyl chain. They are synthesized by the elongation of very long fatty acids-4(ELOVL4) enzyme, expressed mainly in the brain, retina, skin, testes, and meibomian gland, where these fatty acids are found(Agbaga et al., 2008). Further, these organs exhibit tissuespecific VLC-PUFA and VLC-SFA biosynthesis and incorporation into complex lipids for specific functions. In the brain, skin, and Meibomian glands, the ELOVL4 mainly makes VLC-SFA, which are incorporated into complex sphingolipids. In the retina, the ELOVL4 makes VLC-PUFA that are incorporated into phosphatidylcholine, that are critical for visual function, while in testes and sperm, the VLC-PUFA are incorporated into sphingolipids that are critical for fertility(Yeboah et al., 2021).

关键词： functions function insight

Tunable filter Raman spectroscopy of purified semiconducting and metallic carbon nanotubes

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Nano Research 2016年第9期9卷 2715-2728页

作者： paul Finnie Security and Disruptive Technologies Portfolio National Research Council Canada1200 Montreal RoadOttawaOntarioK1A 0R6Canada

Tunable filter Raman spectroscopy is used to efficiently produce Raman excitation maps of unpurified and type-purified single walled carbon nanotubes (SWCNTs). Maps with fine excitation resolution (1 nm) are created over a wide wavelength range (727 to 980 nm), extending from metallic to semiconducting resonances. At a given wavelength, the wide bandwidth (>3,000 cm–1) allows the comparison of the G band with the radial breathing mode (RBM), and shows the 2D band and other less prominent bands. Materials examined included unsorted powders, aqueous sorted semiconductors, aqueous sorted metals, and polyfluorene sorted semiconductors in toluene. The Raman excitation profiles of the G band are broad, relative to the RBM bands. The maps offer evidence of minority species contamination, except in the case of the polyfluorene sorted semiconductors. Tunable Raman spectroscopy data help validate the simpler fixed wavelength Raman spectroscopy approaches to purity assessment. [Figure not available: see fulltext.] © 2016, Tsinghua University Press and Springer-Verlag Berlin Heidelberg.

关键词： single walled carbon nanotube (SWCNT) tunable Raman spectroscop purity metallicity

Gas Quenching Small Components

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材料热处理学报 2004年第5期25卷 494-497页

作者： paul Stratton BOC Sheffield UK

Gas quenching is an environmentally friendly and effective way of quenching components. However it has not been possible to apply it to small components because of the difficulties of jigging. A method of gas quenching such small components is described in which they are levitated in a confined gas stream. The method is suitable for quenching low alloy steel components that weigh between 1 and lOg.

关键词：气体流淬火悬浮低合金钢热处理

On the Contribution of Wu Wen-Tsün to Algebraic Topology

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Journal of Systems Science & Complexity 2019年第1期32卷 3-36页

作者： BRASSELET Jean-paul I2M (CNRS)-Aix-Marseille University

The aim of this article is to present the contribution of Wu Wen-Tsün to Algebraic Topology and more precisely to the theory of characteristic classes. Several papers provide complete and welldocumented biography and academic career of Wu Wen-Tsün, in particular, Hudecek, 2014; O'Connor and Robertson, 2006; Wen-Tsün Wu's Academic Career, 2006; Selected works of Wen-Tsun Wu, *** author does not repeat the details provided in these papers concerning the Wu Wen-Tsün's bibliography, we will just mention people involved in the Wu Wen-Tsün's period in *** addition to Wu Wen-Tsün's papers, the Dieudonné's book(Dieudonné, 1960) provides an excellent presentation of main results of Wu Wen-Tsün in Algebraic and Differential Topology. The author will use and abuse of this book(and refer to) when *** the introduction, the author recalls mainly historical facts concerning the contribution of Wu Wen-Tsün to Algebraic Topology. The second section shows speci?cally the contribution of Wu WenTsün to the Stiefel-Whitney classes and introduces the third section, dealing with the(real) Wu *** author provides de?nition, properties as well as further developments and generalizations of the Wu classes. The fourth and ?fth sections are devoted to recent applications: In Cobordism theory and in Mathematical Physics. The author notices that Wu classes have been used as well in other domains,in particular surgery theory(Madsen and Milgram, 1979). The last section concerns the complex Wu classes and shows that the more recent Mather classes coincide with the previously de?ned complex Wu classes, that is a result from Zhou(1994)(see also Liu, 1996).This article is devoted to the contribution of Wu Wen-Tsün to the theory of Characteristic Classes,which coincides with his "French period"(1947–1951). However, speaking of Algebraic Topology, it is worthwhile to mention the important contribution of Wu Wen-Tsün to the Theory of realization of complexes or manifolds in Eucl

关键词： Algebraic topology characteristic class cobordism theory mathematical physics Wu Class

Materials and sustainable development

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Progress in Natural Science:Materials International 2010年第1期20卷 16-29页

作者： paul KOLTUN CSIRO Process Science and EngineeringGate 5Normanby Rd.ClaytonVictoria3168Australia

Sustainable development is a concept,which involves social,ecological and economic objectives,and requires to sustain the integrity of resources exploitation,the direction of investments,the orientation of technological development and institutional *** there is still much confusion and conflict about exact meaning of sustainable development,many agree that sustainable development is about satisfying social,environmental,and economic *** the concept is generally accepted and relatively easy to comprehend,the difficulty arises in trying to apply the principles of sustainable development in *** of the difficulties is need to measure the"level of sustainability".The desirable characteristics for sustainability indicators have to include: simple to calculate,useful for decision making,and robust in indicating progress toward *** exergy analysis approach based on full life cycle assessment(LCA)of the materials and technologies is a useful metrics to evaluate mitigation of greenhouse gas(GHG)emissions associated with industrial eco materials and *** metrics is used for reducing dimensionality on the input side by combining material and energy streams and output side reducing different characterisation factors to a single"unsustainability"indicator in a theoretically rigorous *** adopted approach has been illustrated on a few examples associated with Australian aluminium industry.

关键词： sustainability measurement exergy analysis life cycle assessment(LCA) eco-efficiency

Using FTIR spectroscopy to detect sericin on historic silk

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Science China Chemistry 2010年第3期53卷 625-630页

作者： WYETH paul Textile Conservation Centre University of Southampton Winchester Campus

Silks represent some of the most precious ancient and historic textile artefacts in collections *** optimum preservation demands an appreciation of their *** important concern,especially with regard to ancient Chinese silks,is whether the fabrics have been *** with remnant sericin gum coating the fibroin fibres would require different conservation *** previous research on aged silks,the presence of sericin has been inferred from amino acid analysis of *** the study reported here,the potential of FTIR spectroscopy to provide a simpler and rapid method of detecting sericin on silk has been *** fibroin and sericin exhibit singular IR *** total reflectance spectroscopy was found to highlight the sericin coating more effectively than transmission and reflectance *** particular peak intensity ratios were identified which might provide a quantitative estimate of the sericin content of new silk,to a sensitivity of 1%-2%.These were also shown to be valid indicators for the presence of sericin on artificially aged and archaeological silks,although quantitation was now not *** the peak intensity ratios,two signature peaks were also seen to be useful markers for silk fibroin,and their presence in a spectrum could be used to infer a degummed silk.

关键词： infrared spectroscopy attenuated total reflectance spectroscopy historic silk

Real-time seismology for the 05/12/2008 Wenchuan earthquake of China: A retrospective view

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Science China Earth Sciences 2009年第2期52卷 155-165页

作者： paul SOMMERVILLE United Research Services Corporation

The devastating 05/12/2008 Wenchuan earthquake (Mw7.9) in Sichuan Province of China showed very few precursory phenomena and occurred on a fault system once assigned to be of moderate long term seismic risk. Given the existing coverage of seismograph stations in Sichuan Province, real-time seis-mology could have been effective in avoiding some earthquake damage and helping post-earthquake emergency response. In a retrospective view, we demonstrated that the epicenter can be located with 20 km accuracy using just two broadband stations with three-component, which takes only about 10 s after the onset of the earthquake. Initial magnitude is estimated to be M7 with the Tc measurement over first 4 seconds of P waves. Better magnitude estimate can be obtained within 2 min by modeling Pnl waves for stations about 500 km away where the S waveforms are clipped. The rupture area is well revealed by teleseismically-recorded >M5 early aftershocks within two hours after the mainshock. Within a few hours, teleseismic body waves were inverted to derive a more detailed rupture process and the finite fault model can be readily used to calculate ground motions, thus providing vital information for rescue efforts in the case where no real-time strong motion records are available.

关键词： real-time seismology earthquake early warning strong ground motion rapid location

S-wave crustal and upper mantle's velocity structure in the eastern Tibetan Plateau——Deep environment of lower crustal flow

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Science China Earth Sciences 2008年第2期51卷 263-274页

作者： paul SILVER Carnegie Institution of Washington Washington DC 20015 USA

A teleseismic profile consisting of 26 stations was deployed along 30°N latitude in the eastern Tibetan Plateau. By use of the inversion of P-wave receiver function, the S-wave velocity structures at depth from surface to 80 km beneath the profile have been determined. The inversion results reveal that there is significant lateral variation of the crustal structure between the tectonic blocks on the profile. From Linzhi north of the eastern Himalayan Syntaxis, the crust is gradually thickened in NE direction; the crustal thickness reaches to the maximum value (~72 km) at the Bangong-Nujiang suture, and then decreased to 65 km in the Qiangtang block, to 57―64 km in the Bayan Har block, and to 40―45 km in the Sichuan Basin. The eastern segment of the teleseismic profile (to the east of Batang) coincides geographically with the Zhubalong-Zizhong deep seismic sounding profile carried out in 2000, and the S-wave velocity structure determined from receiver functions is consistent with the P-wave velocity structure obtained by deep seismic sounding in respect of the depths of Moho and major crustal interfaces. In the Qiangtang and the Bayan Har blocks, the lower velocity layer is widespread in the lower crust (at depth of 30―60 km) along the profile, while there is a normal velocity distribution in lower crust in the Sichuan Basin. On an average, the crustal velocity ratio (Poisson ratio) in tectonic blocks on the profile is 1.73 (σ = 0.247) in the Lhasa block, 1.78 (σ = 0.269) in the Banggong-Nujiang suture, 1.80 (σ = 0.275) in the Qiangtang block, 1.86 (σ = 0.294) in the Bayan Har blocks, and 1.77 (σ = 0.265) in the Yangtze block, respectively. The Qiangtang and the Bayan Har blocks are characterized by lower S-wave velocity anomaly in lower crust, complicated Moho transition, and higher crustal Poisson ratio, indicating that there is a hot and weak medium in lower crust. These are considered as the deep environment of lower crustal flow in the eastern Tibetan Plateau. F

关键词： eastern Tibetan Plateau crustal and upper mantle’s structure teleseismic receiver function lower crustal flow