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The various modes of acid gas storage in aquifers, namely structural, residual, and local capillary trapping, are effective only if the rock remains water‐wet. This paper reports an evaluation, by means of the captive‐bubble method, of the water‐wet character in presence of dense acid gases (CO2, H2S) of typical rock‐forming minerals such as mica, quartz, calcite, and of a carbonate‐rich rock sampled from the caprock of a CO2 storage reservoir in the South‐West of France. The method, which is improved from that previously implemented with similar systems by Chiquet et al. (Geofluids 2007; 7 : 112), allows the advancing and receding contact angles, as well as the adhesion behavior of the acid gas on the mineral substrate, to be evaluated over a large range of temperatures (up to 140°C), pressures (up to 150 bar), and brine salinities (up to NaCl saturation) representative of various geological storage conditions. The water‐receding (or gas‐advancing) angle that controls structural and local capillary trapping is observed to be not significantly altered in the presence of dense CO2 or H2S. In contrast, some alteration of the water‐advancing (or gas‐receding) angle involved in residual trapping is observed, along with acid gas adhesion, particularly on mica. A spectacular wettability reversal is even observed with mica and liquid H2S. These results complement other recent observations on similar systems and present analogies with the wetting behavior of crude oil/brine/mineral systems, which has been thoroughly studied over the past decades. An insight is given into the interfacial forces that govern wettability in acid gas‐bearing aquifers, and the consequences for acid gas geological storage are discussed along with open questions for future work. 相似文献
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Christina Wu 《Interdisciplinary science reviews : ISR》2016,41(4):351-365
Research that involves both neuroscience and art often attempts to explain the aesthetic experience of ‘beauty’ in visual art, and to define the function of art in neural terms; less has been written concerning the neural correlates of poetry reading. It is suggested that there are existing areas of study in neuroscience that may help elucidate how we enjoy literature beyond pure neuroaesthetics, such as research in creative problem-solving, knowledge-based pleasure, and music. This essay endeavours to bring together insights from both neuroscience and literature to shed light on how and why we take pleasure in interpreting T.S. Eliot's ‘The Love Song of J. Alfred Prufrock’. It is proposed that the pleasures of reading ‘Prufrock’ are ultimately associated with the ways in which the reader's expectations are confirmed or challenged. While the conclusions of this paper are intentionally constrained to a single poem, they are potentially generalisable. 相似文献
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Dori Griffin 《Imago Mundi: The International Journal for the History of Cartography》2017,69(2):233-247
This paper explores the career of Ruth Taylor White, an American cartographic illustrator who published a significant number of pictorial maps from the 1920s into the 1940s. Taylor White’s ‘cartographs’ (as she called them) were characterized by her signature bobble-headed cartoon characters who romped through colourful, attractive landscapes. These visually rich and highly narrative maps simultaneously strove for accuracy and engaged in profound stereotyping with regard to culture, race, gender and class. They reveal not only the aesthetic and conceptual preferences of their maker but also the cultural biases of their middle-class, white American audience. 相似文献
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肖炜蘅 《华侨华人历史研究》2005,(4):44-50
在过去的二三十年间,中国非法移民已成为美国华人社会一个日益严重的社会问题,它同时也引起美国政客和社会学家的关注.为什么在美国政府制定了一系列移民政策以阻止非法移民进入美国的同时,非法移民潮却始终禁而不绝?本文选取美国移民政策中的两大法令--政治庇护制度和雇主制裁条例,以说明美国移民制度中存在的一些漏洞及自相矛盾之处,这些对非法移民特别是中国非法移民的形成与发展产生了重要影响. 相似文献
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良渚化的中心聚落一直没有发展成带有城垣建筑的城址。表现出了自身的特殊性。由于宗教巫术的盛行以及宗教权力与世俗权力的紧密结合,使良渚化大量的人力、物力都消耗到与宗教有关的大型建筑工程之中。另外龙山对代长江下游地区比较安宁,没有大规模战争的威胁也是造成这一特殊性的重要原因。 相似文献
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抗美援朝运动期间,南京市医药卫生界组建医疗团奔赴前线。为保证顺利完成各项任务,医疗团在组织宣传、任务分配、经费筹措、人员轮换及家属安抚等方面均做了有效安排。服务期间,医疗团在救治伤病员、建立血库、营地防疫及帮助野战医院建章立制、改进设施、培训人才等正规化建设方面贡献突出。通过前线实践锻炼,医疗团团员提高了医疗技术水平和思想政治觉悟,多数成为优秀业务骨干,推动了南京市卫生事业的发展,但仓促组织医疗团也曾给南京市的医疗卫生工作在短期内带来一些问题。 相似文献
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Michael Benjamin 《American Nineteenth Century History》2013,14(1):79-94
In 1912, Daniel Alexander Payne Murray published a prospectus for his “Historical and Biographical Encyclopedia of the Colored Race throughout the World.” He promised to publish what literary historian Henry Louis Gates Jr., would describe as the “Grail” for black scholars. As Murray planned his encyclopedia in the first decade of the twentieth century, persons of African descent in the United States were killed and assaulted because of their race, and racial identification was as critical an issue as it was also ambiguous. Moreover, despite its ambiguity, or perhaps, because of it, race, in 1912 and since the Naturalization Act of 1790, had everything to do with American citizenship. In Murray’s time, whether a person was identified on the one hand as “white” or “octoroon” versus an identity as “black,” “Negro,” “mulatto,” or “quadroon” influenced whether or not that person could exercise his rights as an American citizen (with her rights barely entering the question). However, race, as Murray understood with its skin color codes shading the meaning of American citizenship, was much more a social construction than it was biological evidence of a person’s hereditary origins. Formulating a strategy in support of black American citizenship, Murray developed a global interpretation of the black American experience from a pragmatically ambiguous cultural practice to compose an identity for himself, his people, and his proposed encyclopedia. 相似文献
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20世纪50年代中期,出于对抗美国在南亚地区的战略影响,苏联与尼泊尔建立了外交关系,对尼援助计划也随之启动.由于受本国经济基础和意识形态等因素的影响,苏联对尼援助的主要领域是工业及其相关产业,对尼援助的主要目的就是扩大其在南亚的战略影响,防止尼泊尔加入西方阵营,同时希望孤立中国以及在尼泊尔培养一个亲苏政权. 相似文献