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| 1 | The complexity of sediment recycling as revealed by common Pb isotopes in K-feldspar显示文摘Detrital zircon U-Pb geochronology has become the gold standard in evaluating source to sink relationships in sedimentary basins. However, the physical and chemical robustness of zircon, which make it such a useful mineral for provenance studies, is also a hindrance as zircon can be recycled through numerous sedimentary basins, thus obscuring the first cycle source to sink relationship. An elegant approach to addressing this potential issue is to compare the Pb isotope composition of detrital K-feldspar, a mineral which is unlikely to survive more than one erosion-transport-deposition cycle, with that of magmatic K-feldspar from potential basement source terranes. Here we present new in situ Pb isotope data on detrital K-feldspar from two Proterozoic arkosic sandstones from Western Australia, and magmatic K-feldspar grains from potential igneous source rocks, as inferred by the age and Hf isotope composition of detrital zircon grains. The data indicate that the detrital zircon and K-feldspar grains could not have been liberated from the same source rocks, and that the zircon has most likely been recycled through older sedimentary basins. These results provide a more complete understanding of apparently simple source to sink relationships in this part of Proterozoic Western Australia. | Simon P.Johnson Christopher L.Kirkland Noreen J.Evans Brad J.McDonald Huntly N.Cutten | 2018 | Geoscience Frontiers2018，9，5： | 5 |
| 2 | Roles of SO_2 oxidation in new particle formation events显示文摘The oxidation of SO2 is commonly regarded as a major driver for new particle formation(NPF) in the atmosphere. In this study, we explored the connection between measured mixing ratio of SO2 and observed long-term(duration > 3 hr) and short-term(duration< 1.5 hr) NPF events at a semi-urban site in Toronto. Apparent NPF rates(J30) showed a moderate correlation with the concentration of sulfuric acid([H2SO4]) calculated from the measured mixing ratio of SO2 in long-term NPF events and some short-term NPF events(Category I)(R2= 0.66). The exponent in the fitting line of J30~ [H2SO4]nin these events was1.6. It was also found that SO2 mixing ratios varied a lot during long-term NPF events,leading to a significant variation of new particle counts. In the SO2-unexplained short-term NPF events(Category II), analysis showed that new particles were formed aloft and then mixed down to the ground level. Further calculation results showed that sulfuric acid oxidized from SO2 probably made a negligible contribution to the growth of > 10 nm new particles. | He Meng Yujiao Zhu Greg J.Evans Cheol-Heon Jeong Xiaohong Yao | 2015 | Journal of Environmental Sciences2015，27，4： | 4 |
| 3 | Helicobacter pylori Adhesins: Review and Perspectives显示文摘 | Doyle J.Evans Dolores G.Evans | 2008 | Helicobacter2008，，4： | 2 |
| 4 | 钌羰基原子簇催化雷伯法反应的促进效应显示文摘 | 高景星 J.Evans | 1988 | 催化学报1988，，03： | 1 |
| 5 | 钌羰基原子簇催化雷伯法反应的促进效应显示文摘 | 高景星 J.Evans | 1988 | 催化学报1988，，03： | 1 |
| 6 | The protective effects of high amylose maize (amylomaize) starch granules on the survival of Bifidobacterium spp. in the mouse intestinal tract显示文摘 | X.Wang I. L.Brown A. J.Evans P. L.Conway | 2001 | Journal of Applied Microbiology2001，，5： | 1 |
| 7 | ATP‐gated P2X1 ion channels protect against endotoxemia by dampening neutrophil activation显示文摘 | C.LECUT C.FACCINETTO C.DELIERNEUX R.van OERLE H. M. H.SPRONK R. J.EVANS J.EL BENNA V.BOURS C.OURY | 2012 | Journal of Thrombosis and Haemostasis2012，，： | 1 |
| 8 | Preoperative MRI sphincter morphology and anal manometry: can they be markers of functional outcome following anterior resection for rectal cancer?显示文摘 | P.How J.Evans B.Moran I.Swift G.Brown | 2012 | Colorectal Disease2012，，6： | 1 |
| 9 | Theoretical Analysis of the Fluctuation Theorem Applied to Electric Circuits显示文摘We carry out a theoretical analysis of the fluctuations in the Johnson–Nyquist noise in an RC electric circuit being driven by a non-ideal constant current source. Using the appropriate Langevin equation, we derive the fluctuation theorem for the system. This analysis exhibits some interesting features. Firstly, the average of the dissipation function is not necessarily just an instantaneous entropy production, i.e. the work being done on the circuit by the external power source divided by the ambient temperature. Secondly, by appropriate selection of the values for the circuit components,the transient response of the system can be made identical to the nonequilibrium steady state response. In the limit of an ideal current source, the average of the dissipation function reduces to the entropy production. Our analysis accurately reproduces published experimental results. | Charlotte F.Petersen Elmars Krausz Denis J.Evans Stephen R.Williams | 2014 | Communications in Theoretical Physics2014，61，10： | 0 |
| 10 | 钯涂(镀)层的分析显示文摘采用化学镀钯得到的纯钯(Pd)适用于软接触开关、电镀通孔的波峰焊和精细与超精细节距表面安装等领域上。钯表面涂(镀)层对于印制电路板(PCB)上单一镀层厚度于所有的应用领域中都可得到令人满意成本要求。 | P.Seto J.Evans S.Bishop 丁志廉 | 1999 | 印制电路信息1999，0，9： | 0 |
| 11 | Effect of mucin 4 allele on susceptibility to experimental infection with enterotoxigenic F4 Escherichia coli in pigs fed experimental diets显示文摘Background: This study investigated the validity of the DNA-marker based test to determine susceptibility to ETECF4 diarrhoea by comparing the results of two DNA sequencing techniques in weaner pigs following experimental infection with F4 enterotoxigenic Escherichia coli(ETEC-F4). The effects of diet and genetic susceptibility were assessed by measuring the incidence of piglet post-weaning diarrhoea(PWD), faecal E. coli shedding and the diarrhoea index.Results: A DNA marker-based test targeting the mucin 4 gene(MUC4) that encodes F4 fimbria receptor identified pigs as either fully susceptible(SS), partially or mildly susceptible(SR), and resistant(RR) to developing ETEC-F4 diarrhoea. To further analyse this, DNA sequencing was undertaken, and a significantly higher proportion of C nucleotides was observed for RR and SR at the Xba I cleavage site genotypes when compared to SS. However, no significant difference was found between SR and RR genotypes. Therefore, results obtained from Sanger sequencing retrospectively allocated pigs into a resistant genotype(MUC4–), in the case of a C nucleotide, and a susceptible genotype(MUC4+), in the case of a G nucleotide, at the single nucleotide polymorphism site. A total of 72 weaner pigs(age ~ 21 days), weighing 6.1 ± 1.2 kg(mean ± SEM), were fed 3 different diets:(i) positive control(PC) group supplemented with 3 g/kg zinc oxide(Zn O),(ii) negative control(NC) group(no Zn O or HAMSA),and(iii) a diet containing a 50 g/kg high-amylose maize starch product(HAMSA) esterified with acetate. At days five and six after weaning, all pigs were orally infected with ETEC(serotype O149:F4;toxins LT1, ST1, ST2 and EAST). The percentage of pigs that developed diarrhoea following infection was higher(P = 0.05) in MUC4+ pigs compared to MUC4– pigs(50% vs. 26.8%, respectively). Furthermore, pigs fed Zn O had less ETEC-F4 diarrhoea(P = 0.009) than pigs fed other diets, however faecal shedding of ETEC was similar(P > 0.05) between diets.Conclusion: These results confirm that MUC4+ pigs have a higher prevalence of ETEC-F4 diarrhoea following exposure, and that pigs fed Zn O, irrespective of MUC4 status, have reduced ETEC-F4 diarrhoea. Additionally,sequencing or quantifying the single nucleotide polymorphism distribution at the Xba I cleavage site may be more reliable in identifying genotypic susceptibility when compared to traditional methods. | Samantha O.Sterndale Danica J.Evans Josephine P.Mansfield Julie Clarke Shafi Sahibzada Sam Abraham Mark O’Dea David W.Miller Jae Cheol Kim John R.Pluske | 2019 | Journal of Animal Science and Biotechnology2019，10，4： | 0 |
| 12 | When will it end? Long-lived intracontinental reactivation in central Australia显示文摘The post-Mesoproterozoic tectonometamorphic history of the Musgrave Province, central Australia, has previously been solely attributed to intracontinental compressional deformation during the 580 -520 Ma Petermann Orogeny. However, our new structurally controlled multi-mineral geochronology results,from two north-trending transects, indicate protracted reactivation of the Australian continental interior over ca. 715 million years. The earliest events are identified in the hinterland of the orogen along the western transect. The first tectonothermal event, at ca. 715 Ma, is indicated by40 Ar/39 Ar muscovite and U e Pb titanite ages. Another previously unrecognised tectonometamorphic event is dated at ca. 630 Ma by Ue Pb analyses of metamorphic zircon rims. This event was followed by continuous cooling and exhumation of the hinterland and core of the orogen along numerous faults, including the Woodroffe Thrust,from ca. 625 Ma to 565 Ma as indicated by muscovite, biotite, and hornblende40 Ar/39 Ar cooling ages. We therefore propose that the Petermann Orogeny commenced as early as ca. 630 Ma. Along the eastern transect,40 Ar/39 Ar muscovite and zircon(Ue Th)/He data indicate exhumation of the foreland fold and thrust system to shallow crustal levels between ca. 550 Ma and 520 Ma, while the core of the orogen was undergoing exhumation to mid-crustal levels and cooling below 600-660℃. Subsequent cooling to 150 -220℃ of the core of the orogen occurred between ca. 480 Ma and 400 Ma(zircon [Ue Th]/He data)during reactivation of the Woodroffe Thrust, coincident with the 450 -300 Ma Alice Springs Orogeny.Exhumation of the footwall of the Woodroffe Thrust to shallow depths occurred at ca. 200 Ma. More recent tectonic activity is also evident as on the 21 May, 2016(Sydney date), a magnitude 6.1 earthquake occurred, and the resolved focal mechanism indicates that compressive stress and exhumation along the Woodroffe Thrust is continuing to the present day. Overall, these results demonstrate repeated amagmatic reactivation of the continental interior of Australia for ca. 715 million years, including at least 600 million years of reactivation along the Woodroffe Thrust alone. Estimated cooling rates agree with previously reported rates and suggest slow cooling of 0.9 -7.0℃/Ma in the core of the Petermann Orogen between ca. 570 Ma and 400 Ma. The long-lived, amagmatic, intracontinental reactivation of central Australia is a remarkable example of stress transmission, strain localization and cratonization-hindering processes that highlights the complexity of Continental Tectonics with regards to the rigid-plate paradigm of Plate Tectonics. | Raphael Quentin de Gromard Christopher L.Kirkland Heather M.Howard Michael T.D.Wingate Fred Jourdan Brent I.A.Mc Innes Martin Danisik Noreen J.Evans Bradley J.McDonald R.Hugh Smithies | 2019 | Geoscience Frontiers2019，10，1： | 0 |
| 13 | Mobilization of Cu in the continental lower crust:A perspective from Cu isotopes显示文摘Recent studies have shown that Cu-rich sulfide accumulates in the lower continental crust and serves as a critical reservoir to balance Cu depletion in the upper crust.Recycling of Cu in the lower crust is also assumed to be a major metal source for non-arc setting porphyry Cu deposits.To test this hypothesis and further explore the behavior of Cu in the lower crust,we analyzed the elemental and Cu isotopic compositions of lower crustal rocks from different geological domains.The collected samples include hornblendites from the Kohistan arc,granulite xenoliths and hornblendites from the Gangdese arc,hornblendites and gabbros from the Laiyuan complex in the North China Craton,and hornblendite xenoliths from the western margin of the Yangtze Craton.These lower crustal rocks have experienced varying degrees of primary or secondary sulfide accumulation,with significantly varied Cu contents(11.2 to 145 ppm)andδδ^(65)(1.05‰to 1.40‰).Petrography and geochemistry reveal varying degrees of metasomatism and fluid interaction in these rocks,and based on this,they can be further divided into three groups:Group I includes the Gangdese granulites and Yunnan hornblendites,which perhaps experienced significant metasomatism.This suite of rocks shows enrichment ofδ^(65)(dδ^(65)=0.01‰to 1.40‰),positively correlated with metasomatism(dδ^(65)vs.Ce/Pb).We suggest the secondary sulfides which transformed from sulfates during the interaction between lower crust and arc magma are dominant in these rocks,so the feature of heavy isotope enrichment is inherited.Group II includes Laiyuan hornblendites and gabbros,derived from the same parental magma and emplaced at different depths(hornblendites,23.3–28.1 km;gabbros 8.4–11.1 km).The Cu isotopic compositions are strongly fractionated between these two kinds of rocks,with low dδ^(65)in the hornblendites(0.00‰to 0.28‰)and highly polarized dδ^(65)in the gabbros(1.05‰to 0.81‰).Geochemical indicators and mineral assemblages reveal that fluid interaction is most likely responsible for this feature.Primary sulfides were decomposed by fluids and reprecipitated at shallower depths.Since this process involves multiple redox reactions,the Cu isotopic composition in the shallowed emplaced gabbros was large fractionated.Group III includes the Gangdese hornblendites and Kohistan hornblendites which show negligible impacts of subduction-like metasomatism and fluid interaction.The Gangdese hornblendites show a homogeneous and unfractionated Cu isotopic composition(-0.09‰to 0.18‰)and Cu content(83.4 to 128 ppm),suggesting insignificant Cu migration and isotope fractionation.In contrast,the Cu isotopic composition of the Kohistan hornblendites is strongly fractionated(-0.36‰to 1.27‰).Geochemistry and modeling results suggest partial melting plays a role in the Cu isotope fractionation.The light Cu isotopes are preferentially distributed into sulfide melts and removed from the source region during partial melting of the lower crust,resulting in a decrease in Cu content and enrichment of heavy Cu isotopes in residues.Results suggest that partial melting and fluid interaction are two efficient mechanisms that encourage Cu migration in the lower crust. | Chen-Hao Luo Rui Wang Yun Zhao Jian Huang Noreen J.Evans | 2023 | Geoscience Frontiers2023，14，5： | 0 |
| 14 | 工程师怎样转变成管理师显示文摘本文意在为那些即将从工程技术转向从事工程管理的人员提供帮助。目的是为工程师们提供有用的信息,使他们能够更好地了解管理工作的要求及一些准则,从而成功地完成从工程师向管理师的转变,并使工程师对工程管理有一个较全面的了解。 | William J.EVans Craiq W.Bredin 陈友渝 | 1990 | 冶金管理1990，0，11： | 0 |
| 15 | 用于软接触开关和高密度SMT组装的钯表面涂覆层显示文摘1 概述本文论述了采用化学镀工艺形成的纯钯表面涂覆层,预期可用于软接触开关。镀通孔的波峰焊接、表面安装波峰焊接和用于精细节距与甚精细节距的表面安装焊膏再流焊等。这种钯镀层具有明显的成本效应。相同的 PWB 上仅以单一钯层厚度就可满足上述所有应用领域的要求。对于 PWB 组装业务来说,化学镀钯的表面涂覆层还是相当新的技术。但是。 | P.Seto J.Evans S.Bishop 丁志廉 | 1999 | 印制电路信息1999，0，7： | 0 |
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