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汽车钢板弹簧疲劳寿命的影响因素 被引量:3
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作者 滕瑛瑶 马建辉 王宇平 《郑州轻工业学院学报(自然科学版)》 CAS 2005年第2期52-54,共3页
通过分析钢板弹簧的材料、加工工艺、设计参数、使用状况等诸因素对板弹簧疲劳寿命的影响,指出对钢板弹簧材料的机械性能、热处理工艺、载荷应力参数等的合理选择有利于提高钢板弹簧寿命.
关键词 钢板弹簧 疲劳寿命 加工工艺
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“黑白黑”长寿命路面技术经济分析 被引量:1
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作者 肖亮 张正明 熊向辉 《浙江交通职业技术学院学报》 CAS 2006年第3期9-11,共3页
本文对AC路面、PCC路面及“黑白黑”长寿命路面进行了全面的技术性能分析,并结合2004年许尉高速公路的材料供应价格,对三种路面结构进行了经济对比分析,得出“黑白黑”长寿命路面是集AC路面与PCC路面优点于一身,经济合理的一种路面结构。
关键词 道路工程 长寿命路面 技术 经济
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Calorie Restriction the Fountain of Youth
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作者 Bashir Ahmed Dar Manzoor Ahmed Dar Sheeba Bashir 《Food and Nutrition Sciences》 2012年第11期1522-1526,共5页
Calorie restriction (CR) is as close to a real fountain of youth as any known technique is. Caloric restriction known to extend the human lifespan by up to five years has quietly become accepted among leading research... Calorie restriction (CR) is as close to a real fountain of youth as any known technique is. Caloric restriction known to extend the human lifespan by up to five years has quietly become accepted among leading researchers. Even scientists who are cautious about anti-aging hype say it works. The formula is simple: Eat less. It could add years to your life. In the context of health and longevity, I analyzed data documenting proofs which suggest that the caloric restriction extends life span and retards age-related chronic diseases in a variety of species, including rats, mice, fish, flies, worms, and yeast as well as improve biomarkers of aging in humans. Research has shown that not only does it result in a longer lifespan, but it also lowers blood pressure, oxidative damage, cardiovascular disease, modifies insulin sensitivity, reduces loss of central nervous system cells, strengthens the immune system, lowers cholesterol, diminishes the rate of heart disease, reduces muscle oxygen loss, improves muscle function, reduces free radical damage to body tissue and helps stabilize blood sugar in adult-onset diabetes. Caloric restriction the most widely recognized life span-extending intervention has shown that it does indeed have age-slowing effects in humans like it has been shown to work in animals and Dr. Fontana has already made medical history in studying anti aging effects of caloric restriction. 展开更多
关键词 Anti AGING longevity technique Everlasting YOUTH EVERGREEN YOUTH ELIXIR of Life
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胜坨油田无短板长寿井举升技术研究与应用
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作者 李永强 袁杰 +2 位作者 崔汝东 谢文献 赵祖德 《石油天然气学报》 CAS 2019年第2期31-34,共4页
胜利采油厂胜坨油田油井举升系统矛盾突出,躺井率一度高达8.9%,严重制约了油田的经济开发。胜坨油田强化技术攻关,优化资金投入,倾力打造无短板长寿井,延长油井生产周期。通过打造无短板长寿井,油田躺井率由2010年的8.9%下降至2017年的2... 胜利采油厂胜坨油田油井举升系统矛盾突出,躺井率一度高达8.9%,严重制约了油田的经济开发。胜坨油田强化技术攻关,优化资金投入,倾力打造无短板长寿井,延长油井生产周期。通过打造无短板长寿井,油田躺井率由2010年的8.9%下降至2017年的2.1%,效果显著。使油田开发工作进入良性循环。 展开更多
关键词 胜坨油田 无短板 长寿井 举升技术 躺井率
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