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Sian Sullivan 《Environmental Communication: A Journal of Nature and Culture》2016,10(6):749-762
ABSTRACTNatural history films use technological mediations to frame aspects of nature so as to communicate information, in part through engendering particular viewer affects. As an entertainment industry embedded in capitalist social relations and concerned with competition for finance and ratings, natural history film-making is also a search for “the money shot” – associated with extremes including rarity, sensational behavior, and otherwise un(fore)seen views. I highlight this sensationalizing impetus through ethnographic fieldwork conducted at the biannual UK Wildscreen film festival in 2010. Here, wildlife films were frequently presented as action dramas with a rhythm of anticipation, climax and satisfaction. I argue that, through stimulating significantly disconnective affects, such framing may work against composition of a caring ecocultural ethics that entwines human with more-than-human natures and futures; and that this tendency parallels the similarly disconnecting effects documented for pornographic film. In contrast, I engage with the differently constructive frames guiding the low budget, open access, activist film Green, which, perhaps paradoxically given the thrust of much of the natural history film industry, won the prestigious WWF Gold Panda Award at Wildscreen 2010. I follow framing theorist George Lakoff to emphasize that since cognition is both embodied and embedded in diverse inter-relationships, affective registers generating mimetic connection are as significant in communicating information regarding “the environment” as the text and words by which nature might be framed. I conclude that attention to affective registers and embodied (dis)connections in natural history film may enhance a turning of capitalist spectacle against itself, so as to work more effectively in service to the composition of abundant socionatural futures. 相似文献
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微生物的异化Fe(Ⅲ)还原是一种能够利用Fe(III)作为末端电子受体在无氧条件下氧化有机物的产能过程。结合这一特性,考察了在兼性厌氧/严格厌氧条件下Fe^0钝化膜作为Fe(111)源时的生物还原能力以及对N、P等营养元素的去除效果。结果表明,严格厌氧条件下微生物异化Fe(Ⅲ)还原能力较好,富集培养至7d,累计Fe(II)浓度达到最大,最大产生速率为98.69mg/(L·d),同时TP去除率高达97.1%以上。而体系对NH4-N、TN的去除相对滞后,培养至13d,去除率开始增大,最终分别达到86.6%和76.1%。这为装填有海绵铁+聚氨酯泡沫载体的SBBR中填料的原位再生问题提供了解决思路。 相似文献
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通过电化学的方法将结晶紫聚合在玻碳电极表面制备聚结晶紫(PCV)膜修饰电极,并研究了对苯二酚和邻苯二酚在PCV膜修饰电极上的电化学行为。PCV膜修饰电极对对苯二酚和邻苯二酚的氧化有良好的电催化作用。在最佳的实验条件下,氧化峰电流在对苯二酚和邻苯二酚的浓度为4.0×10-6~2.8×10-4mol/L之间呈良好线性关系,对苯二酚和邻苯二酚的线性相关系数分别为0.9991和0.9823,检出限分别为6.2×10-7mol/L和9.0×10-7mol/L。PCV膜修饰电极具有良好的灵敏度、重现性和稳定性,可以应用于实际水样中两种物质的同时测定。 相似文献
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Raised beds are used to produce some high-value annual fruit and vegetable crops such as strawberry in California (CA) and tomato in Florida (FL), USA. Pre-plant soil fumigation is an important tool to control soil-borne pests in the raised beds. However, fumigant emissions have detrimental environmental consequences. Field trials were conducted to evaluate emissions of 1,3-dichloropropene (1,3-D) and chloropicrin (CP) in two different production systems with raised beds covered by different tarps. In the CA trial, InLine (60.8% 1,3-D and 33.3% CP) was drip-applied at 340 kg ha−1 to 5 cm deep in the beds (30 cm high and 107 cm wide) tarped with polyethylene (PE) or virtually impermeable film (VIF). In the FL trial, carbonated Telone C35 (63.4% 1,3-D and 34.7% CP) was shank-applied at 151 kg ha−1 to 20 cm deep in the beds (22 cm high and 76 cm wide) tarped with totally impermeable film (TIF). Emissions from tarped beds relative to furrows were contrary between the two trials. For the CA trial, the emission was 47% of applied 1,3-D and 27% of applied CP from PE tarped beds and 31% of applied 1,3-D and 15% of applied CP from VIF tarped beds, while that from uncovered furrows was <0.4% for both chemicals in both fields. In the FL trial, only 0.1% 1,3-D was emitted from the TIF tarped beds, but 27% was measured from the uncovered furrows. Factors contributing to the differences in emissions were chiefly raised-bed configuration, tarp permeability, fumigant application method, soil properties, soil water content, and fumigant carbonation. The results indicate that strategies for emission reduction must consider the differences in agronomic production systems. Modifying raised bed configuration and fumigant application technique in coarse textured soils with TIF tarping can maximize fumigation efficiency and emission reduction. 相似文献
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利用一种新型有机复合填料作为生物滤床中微生物的附着载体,接种经过驯化筛选的专性甲苯降解菌,填装于生物过滤塔中净化低浓度甲苯气体。研究了新型有机复合填料在长期运行时的情况,考察了进气流量、入口浓度、床层温度和填料湿度对生物滤床的影响,最终经过优化得出,此种填料的生物滤床能够为微生物提供良好的附着生长环境,并能保持滤床的高效稳定运行,当进气流量为0.4 m3/h,入口浓度为400 mg/m3,床层温度为30℃,填料湿度为50%时,生化去除量达到30.6 g/(m3.h),并且在此条件下滤床具有良好的耐冲击性能。 相似文献
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ABSTRACT This paper discusses about the effect of feeder height and heat flux on the heat transfer characteristics of horizontal tube falling film evaporation in the thermal regimes. In order to investigate this, a two- dimensional CFD model was developed to perform simulation and results were compared and validated with published data available in the literature. Heat transfer co-efficients in the thermal regimes were determined from the CFD simulation and the results were recorded, analyzed and validated with the mathematical models available in the literature. The novelty of the current study is to predict the commencement of the fully developed thermal region over the tube from the simulation model under varying feeder height and heat flux. An effort was also made to measure the liquid film thickness around the tube from the CFD model in the thermal regimes. It is observed that angle of thermally developing region contracts and fully developed thermal region extends with the increase of the feeder height and heat flux. It is observed from the study that increase of heat flux by 10 kW/m2 resulted in increase of heat transfer co-efficient value by 10–12% average in thermally developing region and 12–15% average in fully developed region. Thinnest liquid film thickness observed between 85 and 127°angle. Shifting of thinnest region of liquid film upward from the mid tube with the increase of the feeder height and heat flux is noted. 相似文献