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Isotope Geochemistry of Volcanic Rocks from the Barton Peninsula,King George Island,Antarctica

Journal of Earth Science 2011年第1期22卷 40-51页

作者： Jeong Hwang 郑祥身 edward m ripley Jong-Ik Lee Dongbok Shin Department of Geological Engineering Daejeon University Institute of Geology and Geophysics Chinese Academy of Sciences Department of Geological Sciences Indiana University Korea Polar Research Institute Department of Geological Sciences Kongju University

C, O, H, S and Sr isotopes were investigated to characterize the isotopic composition of the Paleocene-Eocene volcanic rocks in Barton Peninsula, King George Island, Antarctica. The analyzed samples of volcanic rocks cover a range from basalt to andesite. The δ 13C and 61SO values of calcite in volcanic rocks range from -7.5‰ to -3.2‰ and 0.4‰ to 5.1‰, respectively. The homogenous δ 13C cal and depleted δ18 Ccal values relative to primary magmatic values reflect the effect of high temperature alteration of volcanic rocks. The δ18 O of volcanic rocks ranges from -1.1‰ to 7.2‰, and the majority of values are significantly lower than those of primary magmatic values. The low δ18 O WR values are compatible with high temperature alteration. The initial values of 87Sr/86Sr of volcanic rocks span a narrow range from 0.703 312 to 0.703 504 which belong to the present mid-oceanic ridge basalt. The values of 87Sr/86Sr of volcanics in the Barton Peninsula are similar to those determined in the Fildes Peninsula, King George Island. The δD WR and H2O contents of volcanic rocks range from -74‰ to -66‰ and 0.67 wt.% to 2.74 wt.%, respectively. The higher δD WR and H2O wt.% of volcanic rocks relative to fresh basalts also result from high temperature alteration. Sulfur isotope compositions of the volcanic rocks range from -12.5‰ to -7.0‰; these values may represent fractionation accompanying partial oxidation of magmatic S or incorporation of some bacteriogenic sulfide. The low S contents and negative correlation with C and H2O reflect the formation of calcite and breakdown of sulfide as a result of high temperature water-rock interaction.

关键词： isotope volcanic rock high temperature alteration Antarctica.

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稳定和放射性同位素在Cu-Ni-PGE岩浆矿床研究中的应用:实例及需要注意的问题(英文)

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地学前缘 2007年第5期14卷 124-132页

作者： edward m.ripley Department of Geological Sciences Indiana University

硫、氧同位素和放射性同位素比值在示踪岩浆与围岩的反应及在岩浆镍-铜-铂族元素矿床成因中同化过程的重要性方面有很大作用。如1.1Ga的Duluth杂岩、Norilsk地区二叠-三叠纪侵入岩和1.4Ga的Kabanga侵入岩体中矿床的硫同位素测定结果证... 详细信息

硫、氧同位素和放射性同位素比值在示踪岩浆与围岩的反应及在岩浆镍-铜-铂族元素矿床成因中同化过程的重要性方面有很大作用。如1.1Ga的Duluth杂岩、Norilsk地区二叠-三叠纪侵入岩和1.4Ga的Kabanga侵入岩体中矿床的硫同位素测定结果证明硫来自含硫化物和硫酸盐的围岩。1.3Ga的VoisbeysBay矿床矿石的硫同位素δ34S值通常落入公认的地幔硫同位素组成范围(0±2‰)内,而对其元古宙变质沉积围岩进行的详细研究结果显示δ34S的平均值也在此范围。全面了解同位素组成的潜在混染对合理评价提供硫来源的围岩在矿石形成中的作用是非常必要的。用氧同位素和放射性同位素示踪岩浆和围岩相互作用时,必须在开放体系没有扰动同位素系统情况下进行。在氧同位素体系和放射性同位素体系(如Re/Os、Pb同位素体系)中,元素在热液条件下活动性强或主相没有发生同位素交换与吸收,都会导致低温热液过程掩盖高温过程。只有在进行详细的岩相观察和单矿物分析之后,再应用围岩混染同位素模式才是有意义的。

关键词：硫同位素氧同位素放射性同位素岩浆-围岩相互作用

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含硫化物镁铁质-超镁铁质侵入体中橄榄石mg、Ni含量的制约:原理、模式及Voisey's Bay侵入体样品研究(英文)

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地学前缘 2007年第5期14卷 177-185页

作者： Anthony J.Naldrett edward m.ripley Department of Geology University of TorontoToronto M5S 3B1Canada Department of Earth Sciences Indiana UniversityBloomingtonIN 47405USA

镁铁质-超镁铁质岩浆结晶分离早期形成镁铁矿物,镁铁矿物中的Ni和mg是相容元素。随着结晶分离作用的进行,Ni、mg在硅酸盐岩浆及后形成的硅酸盐物质中的丰度下降。橄榄石中Ni含量及硅酸盐物质mgO/FeO比值都与母岩浆的相关值相关,据此可... 详细信息

镁铁质-超镁铁质岩浆结晶分离早期形成镁铁矿物,镁铁矿物中的Ni和mg是相容元素。随着结晶分离作用的进行,Ni、mg在硅酸盐岩浆及后形成的硅酸盐物质中的丰度下降。橄榄石中Ni含量及硅酸盐物质mgO/FeO比值都与母岩浆的相关值相关,据此可推断母岩浆的信息,它们之间可由实验测得的系数相联系。当岩浆饱和硫化物时,在结晶分离过程中硫化物珠滴会与镁铁硅酸盐物质一道析出,同时,与硫化物非饱和岩浆相比,过多的Ni会随之析出。这也反映在Ni、mg含量比无硫化物分离时有更迅速的降低上。Ni、mg含量变化值可以在VoiseysBay侵入体的模式曲线上反映出,加拿大Labrador的这一侵入体赋存了一个世界级的Ni-Cu-Co硫化物矿床。过去的作法是将侵入体中橄榄石的Ni、mg含量与Simkin和Smith得出的各种火成岩中橄榄石的Ni、mg含量相比较以确定Ni亏损,进而假定橄榄石来自硫化物饱和、有经济价值的岩浆。现在的研究显示这种简单的对比会导致错误。将样品数据与模式曲线对比并反映出侵入体矿物结晶堆积特征是重要的方法。使用这一方法,样品数据能很好地被模式曲线拟合。以在VoiseysBay的研究为例,当硫化物液相与硅酸盐矿物被去除后,硫化物非饱和的分离作用期就会显现出来,随后是硅酸盐结晶作用期。

关键词：橄榄石镍基性-超基性岩浆硫化物矿床

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岩浆型铜镍硫化物矿床铁同位素特征

岩浆型铜镍硫化物矿床铁同位素特征

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中国矿物岩石地球化学学会第17届学术年会

作者：丁昕 edward m.ripley 王文忠黄方中国科学技术大学地球与空间科学学院壳幔物质与环境重点实验室 Indiana University Department of Earth and Atmospheric Sciences

＜正＞岩浆型铜镍硫化物矿床通常产于基性、超基性岩体中,铜、镍和铂族元素赋存于硫化物中,其典型的硫化物组合为磁黄铁矿、镍黄铁矿和黄铜矿。本次研究以四川冷水箐铜镍硫化物矿床为例,分析共生磁黄铁矿和黄铜矿的Fe同位素组成,揭示成... 详细信息

＜正＞岩浆型铜镍硫化物矿床通常产于基性、超基性岩体中,铜、镍和铂族元素赋存于硫化物中,其典型的硫化物组合为磁黄铁矿、镍黄铁矿和黄铜矿。本次研究以四川冷水箐铜镍硫化物矿床为例,分析共生磁黄铁矿和黄铜矿的Fe同位素组成,揭示成矿过程中Fe同位素特征和变化规律。冷水箐铜镍硫化物矿床位于四川盐边高家村岩体铁镁质-超铁镁质杂岩体的东侧,是一

关键词：铜镍硫化物矿床成矿过程岩浆演化铁同位素

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Venous thromboembolism prophylaxis in hospitalized elderly patients： Time to consider a ＇mUST＇ strategy

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Journal of Geriatric Cardiology 2011年第2期8卷 114-120页

作者： Kwok m Ho edward Litton Department of Intensive Care medicine Royal Perth Hospital and School of Population Health University of Western Australia Perth WA 6000 Australia

Venous thromboembolism （VTE） is the commonest cause of preventable death in hospitalized patients. Elderly patients have higher risk of VTE because of the high prevalence of predisposing co-morbidities and acute illnesses. Clinical diagnosis of VTE in the elderly patient is particularly difficult and, as such, adequate VTE prophylaxis is of pivotal importance in reducing the mortality and morbidities of VTE. Omission of VTE prophylaxis is, however, very common despite continuous education. A simple way to overcome this problem is to implement universal VTE prophylaxis for all hospitalized elderly patients instead of selective prophylaxis for some patients only according to individual＇ s risk of VTE. Although pharmacological VTE prophylaxis is effective for most patients, a high prevalence of renal impairment and drug interactions in the hospitalized elderly patients suggests that a multimodality approach may be more appropriate. mechanical VTE prophylaxis, including calf and thigh compression devices and/or an inferior vena cava filter, are often underutilized in hospitalized elderly patients who are at high-risk of bleeding and VTE. Because pneumatic compression devices and thigh length stockings are virtually risk free, mechanical VTE prophylaxis may allow early or immediate implementation of VTE prophylaxis for all hospitalized elderly patients, regardless of their bleeding and VTE risk. Although the cost-effectiveness of this multimodality Universal STat （＇mUST＇） VTE prophylaxis approach for hospitalized elderly patients remains uncertain, this strategy appears to offer some advantages over the traditional ＇selective and single-modal＇ VTE prophylaxis approach, which often becomes ＇hit or miss＇ or not implemented promptly in many hospitalized elderly patients. A large clustered randomized controlled trial is, however, needed to assess whether early, multimodality, universal VTE prophylaxis can improve important clinical outcomes of hospitalized elderly patients.

关键词： age bundle of care deep vein thrombosis prevention pulmonary embolism

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ANALYSIS AND ImPROVEmENT OF LEAD TImE FOR JOB SHOP UNDER mIXED PRODUCTION SYSTEm

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Chinese Journal of mechanical Engineering 2006年第4期19卷 487-491页

作者： CHE Jianguo HE Zhen edward m Knod Department of Industrial Engineering Tianjin University Tianjin 300072 China Department of management Western Illinois University Macomb 61466 USA

Firstly an overview of the potential impact on work-in-process （WIP） and lead time is provided when transfer lot sizes are undifferentiated from processing lot sizes. Simple performance examples are compared to those from a shop with one-piece transfer lots. Next, a mathematical programming model for minimizing lead time in the mixed-model job shop is presented, in which one-piece transfer lots are used. Key factors affecting lead time are found by analyzing the sum of the longest setup time of individual items among the shared processes （SLST） and the longest processing time of individual items among processes （LPT）. And lead time can be minimized by cutting down the SLST and LPT. Reduction of the SLST is described as a traveling salesman problem （TSP）, and the minimum of the SLST is solved through job shop scheduling. Removing the bottleneck and leveling the production line optimize the LPT. If the number of items produced is small, the routings are relatively short, and items and facilities are changed infrequently, the optimal schedule will remain valid. Finally a brief example serves to illustrate the method.

关键词： Lead time Work-in-process(WIP) mixed production system Job shop scheduling problem Traveling salesman problem(TSP)

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High energy neutron and pion-decay gamma-ray emissions from solar flares

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Chinese Journal of Astronomy and Astrophysics 2009年第1期9卷 11-40页

作者： edward L.Chupp James m.Ryan Physics Department and Space Science Center in the Institute for the Study of Earth Oceans and Space University of New Hampshire

Solar flare gamma-ray emissions from energetic ions and electrons have been detected and measured to GeV energies since 1980. In addition, neutrons produced in solar flares with 100 meV to GeV energies have been observed at the Earth. These emissions are produced by the highest energy ions and electrons accelerated at the Sun and they provide our only direct （albeit secondary） knowledge about the properties of the accelerator（s） acting in a solar flare. The solar flares, which have direct evidence for pion-decay gamma-rays, are unique and are the focus of this paper. We review our current knowledge of the highest energy solar emissions, and how the characteristics of the acceleration process are deduced from the observations. Results from the RHESSI, INTEGRAL and CORONAS missions will also be covered. The review will also cover the solar flare capabilities of the new mission, FERmI GAmmA RAY SPACE TELESCOPE, launched on 2008 June II. Finally, we discuss the requirements for future missions to advance this vital area of solar flare physics.

关键词： Sun -- Flares -- Particle Acceleration-meson Production

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SOmE RECENT DEVELOPmENTS IN THE STUDY OF ANCIENT GREEK LAW

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Journal of Ancient Civilizations 2018年第2期33卷 187-266,284页

作者： edward m. Harris University of Durham University of Edinburgh

The laws of the Greek city-states and the Hellenistic Kingdoms dealt with all aspects of life in the community.1 The laws regulated the main political institutions of the community and gave rules to its officials about how to conduct public business. meetings of the Council and Assembly were run according to public statutes, and decrees submitted for approval had to conform to legal norms. All public officials were subject to a legal review of their conduct and could be prosecuted in court or punished by special magistrates.

关键词： ANCIENT GREEK LAW Greek city-states Hellenistic Kingdoms

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Utilization of longitudinal ultrasound to quantify joint soft-tissue changes in a mouse model of posttraumatic osteoarthritis

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Bone Research 2017年第3期5卷 228-234页

作者： Hao Xu Echoe m Bouta Ronald W Wood edward m Schwarz Yongjun Wang Lianping Xing Department of Orthopaedics Longhua Hospital Shanghai University of Traditional Chinese Medicine Department of Pathology and Laboratory medicine Center for musculoskeletal Research Department of Obstetrics and Gynecology University of Rochester Medical Center

To assess the utility of longitudinal ultrasound （US） to quantify volumetric changes in joint soft tissues during the progression of posttraumatic osteoarthritis （PTOA） in mice, and validate the US results with histological findings. A longitudinal cohort of 3-month-old wild-type C57BL/6 male mice received the Hulth-Telhag surgical procedure on right knee to induce ~OA, and sham surgery on their left knee as control. US scans were performed on both knees before, 2, 4, 6, and 8 weeks post-surgery. Joint space volume and Power-Doppler （PD） volume were obtained from US images via Amira software. A paraUel cross-sectional cohort of mice was killed at each US time point, and knee joints were subjected to histological analysis to obtain synovial soft-tissue area and OARSI scores. The correlation between US joint space volume and histological synovial soft-tissue area or OARSI score was assessed via linear regression analysis. US images indicated increased joint space volume in PTOA joints over time, which was associated with synovial inflammation and cartilage damage by histology. These changes started from 2 weeks post-surgery and gradually became more severe. No change was detected in sham joints. Increased joint space volume was significantly correlated with increased synovial soft-tissue area and the OARSI score （P 〈 0.001）. PD signal was detected in the joint space of PTOA joints at 6 weeks post-surgery, which was consistent with the location of blood vessels that stained positively for CD31 and alpha-smooth muscle actin in the synovium. This study indicates that US is a cost-effective longitudinal outcome measure of volumetric and vascular changes in joint soft tissues during PTOA progression in mice, which positively correlates with synovial inflammation and cartilage damage.

关键词： OA PD USA Figure

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Compulsive Repetition of Rupture： Strategies of Representing Trauma

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Frontiers of Literary Studies in China-Selected Publications from Chinese Universities 2015年第2期9卷 147-159页

作者： edward m. G_unn Department of Asian Studies Comell University Ithaca NY 14853 USA

This article focuses on the strategies that literature and cultural criticism adopt to represent trauma in comparison to a current medical definition. The contemporary medical definition, trauma as post-traumatic stress disorder （PTSD）, is the most narrow and specific definition to discuss trauma. The discourse of medicine does not necessarily match those of literature and cultural criticism, nor need they conform to each other. PTSD includes a collection of symptoms, any one of which might not have anything to do with traumatic experience, but which together point with increasing intensity to a psychological syndrome caused by traumatic shock. Although this is historically a recently defined syndrome （1980）, its features had long before attracted attention and been recorded under other terms and diagnoses. Although Chinese literature is only occasionally given to psychological realism, we do find occasional descriptions that strongly suggest aspects of the syndrome. Also, the aims and the needs of medicine and literature or cultural criticism are not necessarily the same, but it is important to explore in greater detail the aims and the needs of literature and cultural criticism.

关键词： strategies of representing trauma traumatic memories compulsiverepetition modem and contemporary Chinese literature

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