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Neocolonialism and the Ecological Crisis of the Suez Canal 新殖民主义与苏伊士运河的生态危机
Pub Date : 2019-04-23 DOI: 10.15367/M:TURJ.V2I1.159
Ritapa Neogi
Since its construction in the mid-1800’s, Egypt’s Suez Canal has been a source of international conflict, economic growth, and ecological turmoil. Because it regularly transports a large number of oil tankers from the Suez Port to Port Said, the canal is one of the most valuable waterways in the world. However, in linking the Mediterranean and Red Sea, the canal has caused hundreds of invasive species to migrate to the Mediterranean -- most notably invasive sea jellies. This has led to damaging effects on industries surrounding the welfare of the sea; for example, fisheries and tourism. In late 2015, despite these ecological concerns, the canal was expanded to include a parallel channel, allowing for two-way travel. While supporters envisioned positive transformations to Egypt’s high poverty and unemployment rates, the expansion’s possible long-term effects on the ocean and industries based on the ocean were neglected in discussion. My goal is to examine these ongoing effects and their consequences on humans whose livelihoods depend on the Mediterranean Sea as a resource, with a focus on how the influx of migrating species, specifically gelatinous zooplankton, have already affected fisheries, agriculture, and tourism. I also look at the eutrophication of nearby waters through chemical disposal from local factories, one of the causes of jellyfish blooms. While the Suez Canal has led to much economic growth for Egypt, the waterway’s growing negative ecological effects may override its positive influences in the long run.
自19世纪中期建成以来,埃及的苏伊士运河一直是国际冲突、经济增长和生态动荡的根源。因为它定期将大量油轮从苏伊士港运送到塞得港,运河是世界上最有价值的水道之一。然而,在连接地中海和红海的过程中,运河导致数百种入侵物种迁移到地中海——最引人注目的是入侵的海水母。这对海洋周围的工业造成了破坏性影响;例如,渔业和旅游业。2015年底,尽管存在这些生态问题,运河还是扩建了一条平行通道,允许双向通行。尽管支持者设想对埃及的高贫困率和高失业率产生积极的影响,但扩建对海洋和基于海洋的工业可能产生的长期影响在讨论中被忽视了。我的目标是研究这些持续的影响及其对依赖地中海作为生计资源的人类的影响,重点关注迁徙物种,特别是胶状浮游动物的涌入如何影响渔业,农业和旅游业。我还关注当地工厂排放的化学物质导致附近水域富营养化,这是水母大量繁殖的原因之一。虽然苏伊士运河为埃及带来了巨大的经济增长,但从长远来看,这条水道日益增长的负面生态影响可能会超过其积极影响。
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引用次数: 0
Methods of On-Site Electricity Generation with Landfill Gas 利用垃圾填埋气就地发电的方法
Pub Date : 2019-04-23 DOI: 10.15367/M:TURJ.V2I1.158
Ivy Chen
The US consumes large quantities of electricity. As a result, there is a growing concern that energy may not be readily available in the future. This worry is compounded by the depletion of traditional sources such as coal, petroleum, and natural gas. Municipal solid waste in landfills is a resource the country may utilize as a renewable source of energy, as the gas produced from landfills can be used to power generators for electricity production, rather than wasted and flared to comply with Resource Conservation and Recovery Act standards. Systems that utilize reciprocating internal combustion engines, microturbines, and molten carbonate fuel cells can feasibly and cleanly reduce landfill gas emissions while producing electricity. However, these methods require input work and initial investments. The main economic goal is to maximize energy production. After economic analysis, the molten carbonate fuel cell system was determined to be the most efficient due to its versatility and low emissions. The successful implementation of the system may result in the propagation of the system, the increase in value of landfill gas, and the waste that produces landfill gas. This may also lead to restructuring of municipal waste system to enhance the usage of landfill gas. Keywords: municipal solid waste, MSW, landfill gas, reciprocating internal combustion engines, microturbines, molten carbonate fuel cells, MCFCs, siloxanes, emissions, greenhouse gases.
美国消耗大量电力。因此,人们越来越担心未来可能无法随时获得能源。煤炭、石油和天然气等传统能源的枯竭加剧了这种担忧。垃圾填埋场的城市固体废物是国家可以作为可再生能源利用的资源,因为垃圾填埋场产生的气体可以用来发电,而不是浪费和燃烧,以符合资源保护和回收法案的标准。利用往复式内燃机、微型涡轮机和熔融碳酸盐燃料电池的系统可以在发电的同时切实、清洁地减少垃圾填埋场的气体排放。然而,这些方法需要投入工作和初始投资。主要的经济目标是使能源生产最大化。经过经济分析,熔融碳酸盐燃料电池系统由于其通用性和低排放被确定为最有效的。该系统的成功实施可能导致系统的繁殖,垃圾填埋气的价值增加,以及产生垃圾填埋气的废物。这也可能导致城市废物系统的重组,以提高堆填气体的使用。关键词:城市固体废物,城市生活垃圾,垃圾填埋气,往复式内燃机,微型涡轮机,熔融碳酸盐燃料电池,mcfc,硅氧烷,排放,温室气体。
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引用次数: 0
Integrating Non-Friction-Based Braking Technology into Locomotives to Improve Train Efficiency, Durability, and Safety 将无摩擦制动技术集成到机车中以提高列车效率、耐久性和安全性
Pub Date : 2019-04-23 DOI: 10.15367/M:TURJ.V2I1.161
C. Wanamaker
While frictional braking is an intuitive method by which to slow vehicles, it is also a costly braking method due to the fact that frictional brakes wear down due to frequent use and high quantities of friction. On trains, this problem is worse because of their constant use and because heavier objects require stronger braking forces. The objective is to improve locomotive performance by developing a braking system that utilizes non-frictional braking technology to cut these costs and yield safer, more durable brakes. This project is directed towards dieselelectric3 locomotives with air brakes, as engineers can design blended braking systems that integrate non-frictional braking into these braking systems. The candidate solutions include regenerative, rheostatic, and hydrodynamic braking, two of which use magnetic fields, and the third of which uses fluid drag forces. Regenerative braking is the proposed solution due to its ability to harness and use electricity during braking. Project success would contribute to railway company success by reducing expenses spent on air brakes; it would also contribute to locomotive manufacturer success because the product will likely become a popular technology. Finally, it would benefit the environment by reducing the external energy required by the railway network. Keywords: Locomotive, braking, non-frictional, regenerative, rheostatic, hydrodynamic, diesel-electric
虽然摩擦制动是一种直观的减速车辆的方法,但它也是一种昂贵的制动方法,因为摩擦制动器由于频繁使用和大量摩擦而磨损。在火车上,这个问题更严重,因为它们经常使用,因为更重的物体需要更强的制动力。目标是通过开发一种利用无摩擦制动技术的制动系统来提高机车性能,从而降低这些成本,并产生更安全、更耐用的制动器。该项目针对的是带有空气制动器的柴油电力机车,因为工程师可以设计混合制动系统,将非摩擦制动集成到这些制动系统中。备选方案包括再生制动、流变制动和流体动力制动,其中两种使用磁场,第三种使用流体阻力。再生制动是提出的解决方案,由于其驾驭能力和利用电力在制动期间。项目的成功将有助于铁路公司的成功,因为它减少了空气制动器的开支;这也将有助于机车制造商的成功,因为该产品可能会成为一种流行的技术。最后,通过减少铁路网所需的外部能源,它将有利于环境。关键词:机车,制动,无摩擦,再生,流变,流体动力,柴油-电力
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引用次数: 0
Madness and Revolution: The Impact of Radicalism on the Treason Trial of James Hadfield 疯狂与革命:激进主义对詹姆斯·哈德菲尔德叛国罪审判的影响
Pub Date : 2019-04-23 DOI: 10.15367/M:TURJ.V2I1.160
Austin Nolen
The insanity defense is a doctrine in the criminal law which excuses from punishment defendants who commit crimes as the result of serious mental illness. However, the sorts of mental illness that qualify for the defense, as well as the causal connection required between the illness and the act, have varied widely across Anglo-American legal history. This thesis argues that historians have not sufficiently considered the role that radicalism and social unrest have played in shaping the defense, and explores the 1800 treason trial of James Hadfield for the attempted assassination of King George III, where government fears of the French Revolution and associated English radicals helped to reshape the insanity defense.
精神错乱辩护是刑法中对因严重精神疾病而犯罪的被告人免除刑罚的一种辩护原则。然而,符合辩护资格的精神疾病种类,以及疾病与行为之间所需的因果关系,在英美法律史上存在很大差异。本文认为,历史学家没有充分考虑激进主义和社会动荡在形成辩护中所起的作用,并探讨了1800年詹姆斯·哈德菲尔德(James Hadfield)企图暗杀乔治三世国王的叛国罪审判,当时政府对法国大革命和相关的英国激进分子的恐惧有助于重塑精神错乱辩护。
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引用次数: 0
Using Reverse Osmosis, Electrodialysis, and Nanofiltration to Increase Affordable Desalinated Groundwater Use in Texas 使用反渗透、电渗析和纳滤来增加德克萨斯州可负担得起的脱盐地下水的使用
Pub Date : 2019-04-23 DOI: 10.15367/M:TURJ.V2I1.162
Julie Lee
Droughts and flooding that have impacted Texas have decreased surface water availability, while draining the limited number of non-saline groundwater sources. Therefore, desalination of saline groundwater would be able to supplement the increasing demand of water for industrial and domestic uses. The process would have to be affordable and capable of meeting WHO1 standards for drinking water. Of the current desalination options available, the methods analyzed are reverse osmosis, electrodialysis, and nanofiltration. Of the three options, it was determined that reverse osmosis was the best solution for the desalination of saline groundwater for both industrial and domestic uses. Reverse osmosis filters saline water to meet WHO standards for sodium and chloride ions. Although both RO and electrodialysis processes were effective enough for eliminating total dissolved solids in the sample saline waters, only RO yielded potable water. If this system is successfully implemented, it could supplement the nonsaline groundwater being used for human consumption, as well as yield RO discharge water for residential or industrial uses. As a result, the severe impacts of the reoccurring droughts in Texas can be reduced, while lessening the drainage of the non-saline groundwater reservoirs in Texas. Keywords: Desalinated Groundwater, Reverse Osmosis, Electrodialysis, Nanofiltration, cost- comparison, potable water, brackish water desalination
影响德克萨斯州的干旱和洪水减少了地表水的可用性,同时耗尽了有限数量的非含盐地下水资源。因此,淡化含盐地下水将能够补充工业和家庭用水日益增加的需求。该过程必须负担得起,并能够达到世卫组织的饮用水标准。在目前可用的海水淡化方案中,分析的方法有反渗透、电渗析和纳滤。在这三种选择中,确定反渗透是工业和家庭用水淡化含盐地下水的最佳解决办法。反渗透过滤盐水以达到世卫组织钠和氯离子标准。虽然反渗透和电渗析工艺都足以有效地消除样品盐水中的总溶解固体,但只有反渗透产生饮用水。如果这个系统成功实施,它可以补充用于人类消费的非含盐地下水,以及产生用于住宅或工业用途的反渗透排放水。因此,可以减少德克萨斯州反复发生的干旱的严重影响,同时减少德克萨斯州非含盐地下水水库的排水。关键词:淡化地下水,反渗透,电渗析,纳滤,成本比较,饮用水,咸淡水淡化
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引用次数: 2
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Maneto Undergraduate Research Journal
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