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白垩纪板块构造的重建

海洋石油 1988年第2期 9-20页

作者： eric j.barron 金康辰

出版了白垩纪诸阶的重建图,作为白垩纪古地理和大洋与大陆资料的基础图。利用地质和地球物理资料确定白垩纪板块对北美的相对旋转。海底扩张史是根据相对旋转求得的。此扩张史与深海钻探计划的资料一致。古经度线是按平均古地磁极的位... 详细信息

出版了白垩纪诸阶的重建图,作为白垩纪古地理和大洋与大陆资料的基础图。利用地质和地球物理资料确定白垩纪板块对北美的相对旋转。海底扩张史是根据相对旋转求得的。此扩张史与深海钻探计划的资料一致。古经度线是按平均古地磁极的位置推算的。虽然仍有许多地方尚有争议,但本文提出的重建显然比先前的重建更为完整。

关键词：磁异常南极洲坎贝尔年代表地质澳大利亚海底扩张第七大陆大洋洲洋底扩张地壳运动板块边界板块边缘太平洋板块板块构造大地构造

地球的未来——前途未卜——对全球气候变暖的预测

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世界科学 1990年第5期 16-18页

作者： eric j.barron ,罗朝华

据气象学家预测,到下世纪中叶,污染的空气将像一张展开了的毯子覆盖在空中,加剧大气本身具有的保温特性,产生温室效应,使全球气温升高。科学家们估计这次由于温室效应造成的气候变化的严重性将不亚于上一次的冰河期,只不过此次的趋势不... 详细信息

据气象学家预测,到下世纪中叶,污染的空气将像一张展开了的毯子覆盖在空中,加剧大气本身具有的保温特性,产生温室效应,使全球气温升高。科学家们估计这次由于温室效应造成的气候变化的严重性将不亚于上一次的冰河期,只不过此次的趋势不是冰窟而是火炉。“一个将被烤焦的星球”——全球性转暖的趋势正向人们发出警告。在讨论地球今后的天气情况时,人们不由自主地

关键词：温室效应变暖热量大气保温效应气象模型地球行星

全球白垩纪古地理——国际地质协调计划191号项目

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海洋石油 1988年第2期 20-23页

作者： eric j.barron 张龙渔

已有一些关于全球白垩纪古地理实例的报导(Termier,1952;B(?)rron 等,1981;Zie-gler 等,1982)。这次国际际协调计划191号项目的主要目的是利用最新的板块重建和白垩纪滨线位置的资料编制白垩纪的每一个阶的全球综合性古地理基础图。编... 详细信息

已有一些关于全球白垩纪古地理实例的报导(Termier,1952;B(?)rron 等,1981;Zie-gler 等,1982)。这次国际际协调计划191号项目的主要目的是利用最新的板块重建和白垩纪滨线位置的资料编制白垩纪的每一个阶的全球综合性古地理基础图。编制这一基础图的目

关键词：古地理图协调计划自然地理图滨线地质

Particle image velocimetry evaluation of flow-altering countermeasures for local scour around a submerged circular cylinder

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International journal of Sediment Research 2022年第4期37卷 411-423页

作者： Priscilla Williams Ram Balachandar Vesselina Roussinova Ronald barron Department of Civil and Environmental Engineering University of Windsor Department of Mechanical Automotive and Materials EngineeringUniversity of Windsor Department of Mathematics and Statistics University of Windsor

The effect of scour countermeasures on the mechanism of local scour around a cylinder requires clarification in order to develop design methodology for use in practice. Previous investigations on countermeasure performance, though useful, have not provided adequate measurements to support this understanding. In the present investigation, particle image velocimetry(PIV) measurements were acquired at several streamwise-vertical planes in the flow field surrounding a submerged circular cylinder with a vertical splitter plate and with a rectangular collar(a horizontal base plate). Analysis of the distribution of mean streamwise velocity and Reynolds shear stress as well as the scour formation indicated that the splitter plate disrupted shear layer interaction in the wake region, reducing the width of scour downstream of the cylinder by 3%. The collar eliminated scour upstream of the cylinder entirely by providing protection at the sides of the cylinder where the shear stress exceeds the critical bed shear stress, and the streamwise velocity distribution in the region between the cylinder and the channel sidewall indicated that installation of a rectangular collar causes flow separation at a point further upstream on the cylinder surface.

关键词： Scour and erosion Local scour Pier scour Scour countermeasures Hydraulic modelling Particle image velocimetry (PIV)

Effect of inductively coupled plasma surface treatment on silica gel and mesoporous MCM-41 particles

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Plasma Science and Technology 2018年第6期20卷 104-113页

作者： j A jUAREZ-MORENO U CHACON-ARGAEZ j.barron-ZAMBRANO C CARRerA-FIGUEIRAS P QUINTANA-OWEN W TALAVerA-PECH Y PerEZ-PADILLA A AVILA-ORTEGA facultad de ingeniería química-uady periférico norte kilómetro 33.5col.chuburna de hidalgo inn C.P. 97203 Mérida Yucatan México centro de investigación y de estudios avanzados del ipn-unidad mérida km.6 antigua carretera a progreso apdo. Postal 73 Cordemex 97310 Méfida Yucatán México

Silica gel and MCM-41 synthesized mesoporous materials were treated with either oxygen（O_2）,hexamethyldisiloxane（HMDSO） and organic vapors like ethanol（Et OH）,and acrylonitrile（AN）inductive *** radiofrequency power for the modification was fixed to 120 W and30 min,assuring a high degree of organic ionization energy in the *** surface properties were studied by infrared spectroscopy（FTIR）,scanning electron microscopy,x-ray photoelectron spectroscopy and dynamic light scattering technique was used for characterizing size *** the silica and MCM-41 particles were modified by AN and HMDSO plasma gases,the surface morphology of the particles was changed,presenting another color,size or *** contrast,the treatments of oxygen and Et OH did not affect the surface morphology of both particles,but increased the oxygen content at the surface bigger than the AN and HMDSO plasma *** this study,we investigated the influence of different plasma treatments on changes in morphology and the chemical composition of the modified particles which render them a possible new adsorbent for utilization in sorptive extraction techniques for polar compounds.

关键词： silica MCM-41 nanoparticles plasma treatment

Superchiral near fields detect virus structure

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Light(Science & Applications) 2020年第1期9卷 103-112页

作者： Tarun Kakkar Chantal Keijzer Marion Rodier Tatyana Bukharova Michael Taliansky Andrew j.Love joel j.Milner Affar S.Karimullah Laurence D.barron Nikolaj Gadegaard Adrian j.Lapthorn Malcolm Kadodwala School of Chemistry Joseph Black BuildingUniversity of GlasgowGlasgow G128QQUK Institute of Molecular Cell and Systems Biology and School of Life SciencesUniversity of GlasgowG128QQ GlasgowUK james Hutton Inst Cell&Mol SciDundee DD25DAUK Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry RAS Moscow 117997Russia School of Engineering Rankine BuildingUniversity of GlasgowGlasgow G128LTUK

Optical spectroscopy can be used to quickly characterise the structural properties of individual ***,it cannot be applied to biological assemblies because light is generally blind to the spatial distribution of the component *** insensitivity arises from the mismatch in length scales between the assemblies(a few tens of nm)and the wavelength of light required to excite chromophores(≥150 nm).Consequently,with conventional spectroscopy,ordered assemblies,such as the icosahedral capsids of viruses,appear to be indistinguishable isotropic spherical *** limits potential routes to rapid high-throughput portable detection appropriate for point-of-care ***,we demonstrate that chiral electromagnetic(EM)near fields,which have both enhanced chiral asymmetry(referred to as superchirality)and subwavelength spatial localisation(∼10 nm),can detect the icosahedral structure of virus ***,they can detect both the presence and relative orientation of a bound virus *** illustrate the potential uses of the exquisite structural sensitivity of subwavelength superchiral fields,we have used them to successfully detect virus particles in the complex milieu of blood serum.

关键词： chiral detect fields

Multiple myeloma survival in New South Wales, Australia, by treatment era to 2020

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Cancer Biology & Medicine 2024年第8期21卷 703-711页

作者： Eleonora Feletto Qingwei Luo Anna Kelly Marianne Weber David Goldsbury Katherine barron Karen Canfell Xue Qin Yu The Daffodil Centre The University of SydneyA Joint Venture with Cancer Council NSWSydney NSW 2006Australia

Objective: Australia has relatively high multiple myeloma(MM) incidence and mortality rates. Advancements in MM treatment over recent decades have driven improvements in MM survival in high-income countries;however, reporting in Australia is limited. We investigated temporal trends in population-wide MM survival across 3 periods of treatment advancements in New South Wales(NSW), ***: Individuals with an MM diagnosis in the NSW Cancer Registry between 1985 and 2015 with vital follow-up to 2020, were categorized into 3 previously defined treatment eras according to their diagnosis date(1985±1995, chemotherapy only;1996±2007, autologous stem cell transplantation;and 2008±2015, novel agents including proteasome inhibitors and immunomodulatory drugs). Both relative survival and cause-specific survival according to Fine and Gray's competing risks cumulative incidence function were calculated by treatment era and age at ***: Overall, 11,591 individuals were included in the study, with a median age of 70 years at diagnosis. Five-year relative survival improved over the 36-year(1985±2020) study period(31.0% in 1985±1995;41.9% in 1996±2007;and 56.1% in 2008±2015). For individuals diagnosed before 70 years of age, the 5-year relative survival nearly doubled, from 36.5% in 1985±1995 to 68.5% in 2008±2015. Improvements for those > 70 years of age were less pronounced between 1985±1995 and 1996±2007;however, significant improvements were observed for those diagnosed in 2008±2015. Similar overall and age-specific patterns were observed for causespecific survival. After adjustment for gender and age at diagnosis, treatment era was strongly associated with both relative and cause-specific survival(P er, older age groups continue to experience poor survival outcomes with only modest improvements over time. Given the increasing prevalence of MM in

关键词： Multiple myeloma cancer epidemiology survival analysis competing risk analysis Australia

Radiofrequency electric-field heating behaviors of highly enriched semiconducting and metallic single-walled carbon nanotubes

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Nano Research 2015年第9期8卷 2859-2870页

作者： Stuart j. Corr Mustafa Raoof Brandon T. Cisneros Alvin W. Orbaek Matthew A. Cheney justin j. Law Nadia C. Lara Andrew R. barron Lon j. Wilsor Steven A. Curley Division of Surgery Baylor College of Medicine Houston TX 77030 USA Department of Surgical Oncology University of Texas M.D. Anderson Cancer Center Houston TX 77030 USA Department of Chemistry and the Richard E. Smalley Institute for Nanoscale Science and Technology Rice University Houston TX 77005 USA Department of Surgery The University of Arizona College of Medicine Tucson AZ 85724 USA Department of Chemistry and Biochemistry University of California San Diego La Jolla CA 92093 USA College of Engineering Swansea University Singleton Park Swansea SA2 8PP Wales UK Department of Mechanical Engineering and Materials Science Rice University Houston TX 77005 USA

It is theorized that enhanced thermal heating may result from exposing single-walled carbon nanotubes （SWNTs） embedded in a conductive host to radiofrequency （RF） electric fields. We examine the RF-induced （13.56 MHz） heating behaviors of 95% metallic- and semiconducting-enriched SWNTs （m-/s-SWNTs） suspended in aqueous solutions with varying NaC1 molarity （0.001 mM-1 M）. The heating effects were only evident for host molarities below 1 mM （equivalent to 0.1 S/m） at which the s-SWNT heating rates dominated those of the m-SWNTs. The heating effects were localized to aligned and aggregated ＂SWNT ropes＂ -1 cm in length that formed in suspension, parallel to the electric-field vector, during the RF exposure. For molarities above 1 mM, no enhancements were evident, owing to the large heating effects of the bulk ionic NaC1 suspensions, which were observed in previous studies. Although larger enhancement effects proportional to the host conductivity have been theoretically predicted for m-/s-SWNT suspensions, this was not observed most likely because of the aggregation and screening effects, which diminished the scattered electric field near the m-/s-SWNTs. Our research may further the development of better nanoparticle heating agents for applications such as non-invasive RF-induced cancer hyperthermia.

关键词： rad.iofrequency,carbon nanotubes,metallic,semiconducting,hyperthermia

Solvent-free microwave-assisted synthesis of tenorite nanoparticle-decorated multi-walled carbon nanotubes

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journal of Materials Science & Technology 2019年第6期35卷 1121-1127页

作者： jennifer A. Rudd Cathren E. Gowenlock Virginia Gomez Ewa Kazimierska Abdullah M. Al-Enizi Enrico Andreoli Andrew R. barron Energy Safety Research Institute Swansea University Bay Campus Swansea SA1 8EN UK Chemistry Department College of Sciences KingSaud University Riyadh Saudi Arabia Department of Chemistry Rice University Houston Texas 77005 USA Department of Materials Science and Nanoengineering Rice University Houston Texas 77005 USA

Copper-decorated carbon nanotubes(CNTs) have important applications as precursors for ultraconductive copper wires. Tenorite-decorated CNTs(CuO-CNTs) are ideal candidates and are currently developed using laborious processes. For this reason, we have developed a facile and scalable method for the synthesis of CuO-CNTs from copper acetate. It was found that the optimal loading of copper acetate onto the CNTs was 23.1 wt% and that three 1-minute microwave treatments were sufficient for the decomposition of copper acetate to copper oxide. The loading of copper oxide onto the nanotubes was confirmed using X-ray photoelectron spectroscopy, energy-dispersive X-ray spectroscopy and thermogravimetric analysis. The materials were characterised using X-ray diffraction and scanning electron microscopy.

关键词： Microwave-assisted synthesis Multi-walled carbon nanotubes Tenorite Nanoparticle