Mediating good food and moments of possibility with Jamie Oliver: Problematising celebrity chefs as talking labels     

《Geoforum》2017

This paper explores the powerful and mediating role of celebrity chefs over audience relationships with food through analysis of Jamie Oliver and his recent series Save with Jamie. The paper firstly situates the role of celebrity chefs theoretically, defining them as ‘talking labels’ who may act both as knowledge intermediaries and boundary objects to connect audiences with food in multiple ways. Here chefs actively construct and mediate discourses around ‘good food’. As trusted, credible, well-liked public figures, chefs step into out private home spaces through our televisions to convey food information in a charismatic, entertaining and accessible way. Like traditional food labels, chef’s words can be ‘sticky’ and take hold in public imaginations in a way that goes far beyond the capacity of food products labels. Yet the relationship between chefs and audiences is far from straightforward and so the paper secondly aims to explore how these talking labels are understood and ‘used’ by audiences in their everyday food practices. Drawing selectively from a large scale audience survey (n = 600) as well as the series, Save with Jamie, this paper reveals the different ways that audiences ‘talk back’ to chefs both positively and negatively to create moments of simultaneous possibility and resistance for audience relations with food. This revealed complex relationships between audiences, chefs and food. It also suggests that the powerful work on celebrity chefs functions as part of a new mediated mechanism within today’s food governance.  相似文献   

Associated terrestrial and marine fossils in the late-glacial Presumpscot Formation, southern Maine, USA, and the marine reservoir effect on radiocarbon ages   总被引：1，自引：0，他引：1  

Woodrow B. Thompson  Carol B. Griggs  Norton G. Miller  Robert E. Nelson  Thomas K. Weddle  Taylor M. Kilian   《Quaternary Research》2011,75(3):552-565

Excavations in the late-glacial Presumpscot Formation at Portland, Maine, uncovered tree remains and other terrestrial organics associated with marine invertebrate shells in a landslide deposit. Buds of Populus balsamifera (balsam poplar) occurred with twigs of Picea glauca (white spruce) in the Presumpscot clay. Tree rings in Picea logs indicate that the trees all died during winter dormancy in the same year. Ring widths show patterns of variation indicating responses to environmental changes. Fossil mosses and insects represent a variety of species and wet to dry microsites. The late-glacial environment at the site was similar to that of today's Maine coast. Radiocarbon ages of 14 tree samples are 11,907 ± 31 to 11,650 ± 50 ¹⁴C yr BP. Wiggle matching of dated tree-ring segments to radiocarbon calibration data sets dates the landslide occurrence at ca. 13,520 + 95/−20 cal yr BP. Ages of shells juxtaposed with the logs are 12,850 ± 65 ¹⁴C yr BP (Mytilus edulis) and 12,800 ± 55 ¹⁴C yr BP (Balanus sp.), indicating a marine reservoir age of about 1000 yr. Using this value to correct previously published radiocarbon ages reduces the discrepancy between the Maine deglaciation chronology and the varve-based chronology elsewhere in New England.  相似文献   

福建沿岸海域浒苔藻类的营养成分含量与食用安全   总被引：4，自引：0，他引：4  

林建云  陈维芬  贺青  林力斌  汤荣坤  暨卫东 《台湾海峡》2011,30(4):570-576

对福建沿岸海域浒苔（Enteromorpha）样品的主要组成成分、氨基酸、脂肪酸、矿物质含量的研究表明,浒苔属高膳食纤维（49．0％～59．1％）、高蛋白质（19．60％～38．24％）、低脂肪（0．20％～0．55％）的藻类．浒苔中17种氨基酸总量（Ctaa）与蛋白质含量的比值为74．1％～91．0％;其必需氨基酸含量（Ctaa）占C11从的35．4％～40．0％,CⅢ与非必需氨基酸含量（C。Ⅲ）之比为0．55～0．67,且呈味氨基酸的含量丰富（47．1％）,氨基酸组成均衡．浒苔油脂中脂肪酸组成丰富,n一3PUFA含量达油脂总量的20．0％～26．4％,其中含有EPA、DHA．浒苔中矿物质含量较高,尤其富含镁、钙、铁、锌、硒、钾等人体必需矿物元素．有害元素测定结果表明,中、低潮区浒苔的铅、汞、镉、砷含量均能够符合《无公害食品海藻》安全指标的限量要求,养殖区、高潮区部分浒苔的Pb含量超标．研究结果认为,在低污染海区生长的浒苔是一种高蛋白质、高膳食纤维、低脂肪、矿物元素丰富且安全的海洋食品．  相似文献   

川东北楼房洞洞穴系统水体元素含量季节变化与影响因素   总被引：1，自引：0，他引：1  

贺海波  刘淑华  杨亮  汤静  米小建  陈琼  陈琳  黄嘉仪  杨琰  周厚云 《地球化学》2015,(2):205-212

通过对川东北诺水河地区楼房洞洞穴系统水体Ca、Mg、Sr、Ba和U元素含量变化进行为期一年(2011年7月至2012年6月)的监测,结果发现:(1)各监测点的元素含量变化一般具有较明显的季节性,但不同的监测点之间、不同的元素之间季节变化趋势并不一致,反映了在不同的环境下不同的元素含量变化的影响机制存在差异;(2)对于2011年9月的强降水事件,河水的元素含量明显受到稀释作用影响,而洞穴内水体尤其是池水的元素含量变化明显较弱,这反映了洞穴上覆地层对外部降水事件的缓冲作用,特别是洞穴内池水由于存在更复杂的影响机制,其对外界的降水事件的响应最不敏感;(3)在所有监测点,Sr含量和Sr/Ca比值变化均表现出冬春季节相对较高而夏秋季节较低的特点,可能反映了水岩相互作用和大气沉降活动是影响Sr含量和Sr/Ca比值变化的主要机制。这对该地区岩溶洞穴沉积中的Sr含量(或Sr/Ca比值)和87Sr/86Sr比值作为研究大气粉尘活动和冬季风强度变化指标的观点给予了支持。  相似文献   

新一轮就矿找矿     

董和金 《地球学报》2015,36(2):141-150

本文简要回顾了二十世纪五、六十年代就矿找矿的历史,进而提出新一轮的就矿找矿。相比之下,新一轮就矿找矿具有新的特点。深部找矿实则是一种就矿找矿,地壳连续成矿理论、深部流体(成矿)作用理论、成矿台阶理论都为新一轮就矿找矿提供了理论依据。深部找矿在国内外初显成效,湘中地区亦有很多成功案例。本文从3个方面总结了深部找矿的一些经验标志,即矿种及矿种组合系列标志、花岗岩成矿专属性标志、幔源成因矿床的鉴别标志。此外,辨别成矿流体的深(幔)源标志、加强成矿规律研究、更新观念、引进新技术新方法,都是实际深部找矿工作中需要注意的。  相似文献   

From matters of fact to places of concern? Energy,environmental movements and place-making in Chile and Thailand     

《Geoforum》2015

As demand for energy is growing and resources become scarcer, energy increasingly becomes the site of heated controversies. In Latour’s terms, energy turns from a “matter of fact” into a “matter of concern”. In these energy controversies, environmental movements frequently play a central role, highlighting what is at stake in these developments. While these movements have often been studied, these studies rarely focus on the interaction between controversies, environmental movements, and place-making. In this article, we not only argue that energy is frequently turned from matter of fact into a matter of concern, but that this argument also extends to the notion of place. As such, energy controversies turn villages, cities, or regions themselves into “places of concern”. The article delves deeper into the production of places of concern through two case studies of energy controversies around power plants: a proposed coal plant in Bo Nok, Thailand, and HidroAysen, a hydropower project in Chilean Patagonia. We specifically focus on the issues that were opened up for debate in both countries, and on the role of environmental movements in the production of these places. Our examples are based on fieldwork and interviews in these two areas, as well as media and document analysis. While the two cases are from two different countries, we nonetheless find surprising parallels between them. These insights are instrumental to link theoretical debates on controversies and place-making. Moreover, they provide empirical insights into the transformative and lasting effects of energy controversies on people and places.  相似文献   

The PISA grammar decodes diverse human–environment approaches     

《Global Environmental Change》2015

Human–environment interactions are studied by several groups of scholars who have elaborated different approaches to describe, analyze, and explain these interactions, and eventually propose paths for management. The SETER project (Socio-Ecological Theories and Empirical Research) analyzed and compared how “flag-holders” of distinct school of thought in human–environment scholarship approached a number of empirical problems of environmental management. This paper presents the findings from this experiment by concentrating on how representatives of four schools of thought approached one of these case studies: the plant health crisis in greenhouse tomato production in south of France. Our analysis suggests that these approaches share a common conceptual vocabulary composed of four explanatory elements of change (Power, Incentives, System and Adaptation-PISA). We argue that what distinguishes these schools from one another is the syntax—the “rules” by which researchers in each of the sub-disciplines tend to organize the components of this shared conceptual vocabulary. In other words, the schools under scrutiny are differentiated not so much by what they speak of, but rather in what order, or hierarchy, do they tend to rank the importance and/or the sequence of each of these concepts in human–environment explanations. The results of our experiment support the view that communication and cooperation across the diverse human–environment traditions is possible and productive. At the same time, however, we argue that it is the distinctiveness of the claims yielded by these different schools of thought that augment our collective understanding of complex socio-ecological problems. Attempts to integrate these perspectives in one unitary approach would undermine the intellectual wealth necessary to meet the challenges of the Anthropocene.  相似文献   

Power capture performance of an oscillating-body WEC with nonlinear snap through PTO systems in irregular waves     

《Applied Ocean Research》2015

Compared with solar and wind energy, wave energy is a kind of renewable resource which is enormous and still under development. In order to utilize the wave energy, various types of wave energy converters (WECs) have been proposed and studied. And oscillating-body WEC is widely used for offshore deployment. For this type of WEC, the oscillating motion of the floater is converted into electricity by the power take off (PTO) system, which is usually mathematically simplified as a linear spring and a damper. The linear PTO system is characteristic of frequency-dependent response and the energy absorption is less powerful for off resonance conditions. Thus a nonlinear snap through PTO system consisting of two symmetrically oblique springs and a linear damper is applied. A nonlinear parameter γ is defined as the ratio of half of the horizontal distance between the two oblique springs to the original length of both springs. JONSWAP spectrum is utilized to generate the time series of irregular waves. Time domain method is used to establish the motion equation of the oscillating-body WEC in irregular waves. And state space model is applied to replace the convolution term in the time domain motion equation. Based on the established motion equation, the motion response of both the linear and nonlinear WEC is numerically calculated using 4th Runge–Kutta method, after which the captured power can be obtained. Then the influences of wave parameters such as peak frequency, significant wave height, damping coefficient of the PTO system and the nonlinear parameter γ on the power capture performance of the nonlinear WEC is discussed in detail. Results show that compared with linear PTO system, the nonlinear snap through PTO system can increase the power captured by the oscillating body WEC in irregular waves.  相似文献   

基于生态系统服务的海洋健康评估与调控:以莱州湾为例     

沈程程  郑伟  石洪华  丁德文  王宗灵 《海洋学报(英文版)》2015,34(12):61-66

近岸海域的生态系统管理,要求对海洋健康进行综合的评估以及对人工调控进行科学的指导,进而促进可持续发展。本文构建了定量化方法,用于评估当前的和近期的基于生态系统服务的海洋健康。以莱州湾为例的研究结果表明,当前的海洋健康指数分值为0.7856(总分为1.0);通过对负面压力进行不同强度的人工调控,得到近期海洋健康预计的变化范围为0.5551到0.8041。具体地说,本文评估得到当前的海洋健康主要表现为文化服务和供给服务基本优秀,而支持服务和调节服务不够良好。若不对持续增长的压力采取有效的调控措施,该近岸海域生态系统会在近期丧失部分支持服务和调节服务;若负面压力被完全控制,该近岸海域生态系统服务的分类等级会得到小幅提升。另外,应进一步加强对生态系统服务尤其是文化服务和调节服务的宣传教育。本文的分析过程和量化结果,为进一步指导人工调控提供了灵活的工具,有助于海岸带区域的生态系统管理。  相似文献   

泉州地震台数字地震仪台址的地脉动噪声分析     

林建生  张有明  谢文杰  吴淑美  王建新 《华南地震》2011,31(1):18-28

利用2008年泉州台甚宽频带数字地震仪连续48 h和全年每月连续48 h内白天与夜间各连续4 h的地脉动记录,计算5 Hz、5 s和100s的静态地脉动噪声功率谱密度、1/3倍频程1-20Hz带宽各段的平均静态地脉动噪声有效值、1/3倍频程100-30 s带宽各段的平均静态地脉动加速度噪声有效值,以及上述3个频点和2个...  相似文献