Due to the remarkable advances in biomedical engineering, new technologies like brain-machine interfaces, robotics, tissue engineering, and more, artificial organs are being developed that can replace the function of natural ones. There will soon come a time when we can ask, how much of the human body can be replaced by medical devices?
{"title":"Spare Parts","authors":"Kayt Sukel","doi":"10.1115/1.2023-jan2","DOIUrl":"https://doi.org/10.1115/1.2023-jan2","url":null,"abstract":"\u0000 Due to the remarkable advances in biomedical engineering, new technologies like brain-machine interfaces, robotics, tissue engineering, and more, artificial organs are being developed that can replace the function of natural ones. There will soon come a time when we can ask, how much of the human body can be replaced by medical devices?","PeriodicalId":18406,"journal":{"name":"Mechanical Engineering","volume":"63 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2023-01-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80591118","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Eliminating the climate impact of long-distance airline flights will require cutting fossil carbon from the aviation energy supply. Startups and established companies are scrambling to develop new energy technologies that would allow airlines and their passengers to fly the globe without contributing to its warming. There is, however, no consensus on the best way this can be accomplished.
{"title":"Fly the Climate-Friendly Skies","authors":"M. Abrams","doi":"10.1115/1.2022-nov1","DOIUrl":"https://doi.org/10.1115/1.2022-nov1","url":null,"abstract":"\u0000 Eliminating the climate impact of long-distance airline flights will require cutting fossil carbon from the aviation energy supply. Startups and established companies are scrambling to develop new energy technologies that would allow airlines and their passengers to fly the globe without contributing to its warming. There is, however, no consensus on the best way this can be accomplished.","PeriodicalId":18406,"journal":{"name":"Mechanical Engineering","volume":"23 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2022-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81987324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Direct, large-scale solar management interventions have been part of the fringe of the climate debate for decades. To critics, they were seen as a speculative excuse for not doing the hard work of reducing carbon emissions. It was thought that even asking whether these interventions could be considered created a moral hazard. But the argument that the sole focus should be on greenhouse gas emissions has run into the reality that reduction has been too slow. Is it time to reconsider climate interventions?
{"title":"Is the Future Hazy?","authors":"S. Goudarzi","doi":"10.1115/1.2022-nov2","DOIUrl":"https://doi.org/10.1115/1.2022-nov2","url":null,"abstract":"\u0000 Direct, large-scale solar management interventions have been part of the fringe of the climate debate for decades. To critics, they were seen as a speculative excuse for not doing the hard work of reducing carbon emissions. It was thought that even asking whether these interventions could be considered created a moral hazard. But the argument that the sole focus should be on greenhouse gas emissions has run into the reality that reduction has been too slow. Is it time to reconsider climate interventions?","PeriodicalId":18406,"journal":{"name":"Mechanical Engineering","volume":"13 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2022-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87375606","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Fueling gas turbines with hydrogen was a path not taken by early innovators. And for good reasons: Hydrogen atoms are so reactive that very little molecular hydrogen is available. Hydrocarbon fuels, such as methane, kerosene, and gasoline, became the energy source of choice for the technology. But the need to reduce carbon emissions has revived interest in hydrogen fuel.
{"title":"Hot Pursuit","authors":"L. Langston","doi":"10.1115/1.2022-nov3","DOIUrl":"https://doi.org/10.1115/1.2022-nov3","url":null,"abstract":"\u0000 Fueling gas turbines with hydrogen was a path not taken by early innovators. And for good reasons: Hydrogen atoms are so reactive that very little molecular hydrogen is available. Hydrocarbon fuels, such as methane, kerosene, and gasoline, became the energy source of choice for the technology. But the need to reduce carbon emissions has revived interest in hydrogen fuel.","PeriodicalId":18406,"journal":{"name":"Mechanical Engineering","volume":"11 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2022-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88597837","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A few household robots are on the market today. But, none of those could be confused with Rosie the Robot, the muliply capable robot on The Jetsons. That raises the question: As technology advances, what will it take for the promise of the home of the future—powered by intelligent domestic robots—to finally be realized?
{"title":"What the Home of the Future is Missing Today","authors":"Kayt Sukel","doi":"10.1115/1.2022-sep1","DOIUrl":"https://doi.org/10.1115/1.2022-sep1","url":null,"abstract":"\u0000 A few household robots are on the market today. But, none of those could be confused with Rosie the Robot, the muliply capable robot on The Jetsons. That raises the question: As technology advances, what will it take for the promise of the home of the future—powered by intelligent domestic robots—to finally be realized?","PeriodicalId":18406,"journal":{"name":"Mechanical Engineering","volume":"4 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79948627","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-09-01DOI: 10.5962/bhl.title.119874
Lina Zeldovich
As robots become more advanced and more autonomous, they will be asked to do tasks that humans need done, but don’t want to do themselves. Unfortunately, in some cases, those tasks may include going to war. Ghost Robotics Q-UGV was recently fitted with a rifle in a demonstration of its potential on the battlefield.
{"title":"War Dogs","authors":"Lina Zeldovich","doi":"10.5962/bhl.title.119874","DOIUrl":"https://doi.org/10.5962/bhl.title.119874","url":null,"abstract":"\u0000 As robots become more advanced and more autonomous, they will be asked to do tasks that humans need done, but don’t want to do themselves. Unfortunately, in some cases, those tasks may include going to war. Ghost Robotics Q-UGV was recently fitted with a rifle in a demonstration of its potential on the battlefield.","PeriodicalId":18406,"journal":{"name":"Mechanical Engineering","volume":"41 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77337404","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The geothermal heat resource is not limited the way fuel or iron or other materials are. But the low efficiency of geothermal power systems is unsatisfying and contributes to often-poor economics. To improve efficiency, engineers could look for a different thermodynamic cycle in the power plant. And, the economics can be improved by developing a facility whereby geothermal heat and electricity is the by-product of a process to produce lithium.
{"title":"New Horizons for Geothermal Energy","authors":"F. Wicks","doi":"10.1115/1.2022-sep3","DOIUrl":"https://doi.org/10.1115/1.2022-sep3","url":null,"abstract":"\u0000 The geothermal heat resource is not limited the way fuel or iron or other materials are. But the low efficiency of geothermal power systems is unsatisfying and contributes to often-poor economics. To improve efficiency, engineers could look for a different thermodynamic cycle in the power plant. And, the economics can be improved by developing a facility whereby geothermal heat and electricity is the by-product of a process to produce lithium.","PeriodicalId":18406,"journal":{"name":"Mechanical Engineering","volume":"43 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87258983","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
GM, Ford, and other automakers are chasing Tesla in the manufacture and marketing of electric vehicles. In turn this is sparking an upheaval the auto industry has not seen since Henry Ford’s Model T, which introduced manufacturing to the assembly line, and its effects are roiling the parts supply industry.
{"title":"Supply Chain Kinks","authors":"J. Kosowatz","doi":"10.1115/1.2022-jul1","DOIUrl":"https://doi.org/10.1115/1.2022-jul1","url":null,"abstract":"\u0000 GM, Ford, and other automakers are chasing Tesla in the manufacture and marketing of electric vehicles. In turn this is sparking an upheaval the auto industry has not seen since Henry Ford’s Model T, which introduced manufacturing to the assembly line, and its effects are roiling the parts supply industry.","PeriodicalId":18406,"journal":{"name":"Mechanical Engineering","volume":"63 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2022-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80877246","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
There is a better way of handling MSW that is not or cannot be recycled: thermal conversion, also called waste to energy. These facilities feed waste into a combustion chamber with air and incinerate it. The heat released from combustion produces steam for use in a district heat network, or to generate electricity, or do both in combined heat and power systems. In addition to enabling the heat content of the MSW to be recovered, combustion reduces its final volume by more than 90 percent, thus decreasing the need for landfills.
{"title":"The Case for Waste to Energy","authors":"M. Castaldi, J. Leblanc, A. Licata","doi":"10.1115/1.2022-jul2","DOIUrl":"https://doi.org/10.1115/1.2022-jul2","url":null,"abstract":"\u0000 There is a better way of handling MSW that is not or cannot be recycled: thermal conversion, also called waste to energy. These facilities feed waste into a combustion chamber with air and incinerate it. The heat released from combustion produces steam for use in a district heat network, or to generate electricity, or do both in combined heat and power systems. In addition to enabling the heat content of the MSW to be recovered, combustion reduces its final volume by more than 90 percent, thus decreasing the need for landfills.","PeriodicalId":18406,"journal":{"name":"Mechanical Engineering","volume":"1 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2022-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78051740","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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