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铜合金蒸汽保护无氧化加热罩式退火炉
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作者 郭建勋 尹波平 《有色金属加工》 CAS 2003年第5期58-59,共2页
本文结合某厂的一台木炭保护无氧化退火炉的技术改造介绍铜合金蒸汽保护无氧化罩式退火炉的结构特点及生产工艺。
关键词 铜合金 无氧化 罩式退火炉 木炭保护 蒸汽保护 结构特点 生产工艺
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Improved Charcoal Production for Environment and Economics of Blacksmiths: Evidence from Nepal
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作者 Rishi Ram Kattel 《Journal of Agricultural Science and Technology(B)》 2015年第3期197-204,共8页
Blacksmiths in Nepal are marginalized and disadvantaged occupational caste, however, very popular for their handicraft works mainly in making iron tools and equipments. With the advancement of technology, there have b... Blacksmiths in Nepal are marginalized and disadvantaged occupational caste, however, very popular for their handicraft works mainly in making iron tools and equipments. With the advancement of technology, there have been many innovative technologies in many other sectors, but blacksmiths in Nepal are still dependent on their indigenous and conventional practices which have direct negative consequences for environment, biodiversity conservation and health. Recently, improved charcoal production technology has been implemented among the 77 blacksmith households in Sindhupalchowk district as a pilot project. However, there is little research about the impact of improved charcoal production on forest resources conservation and people's livelihoods. This study therefore made an effort to explore the impact of improved charcoal production technology and firewood consumption on conserving the environment and promoting sustainable livelihood of marginalized households in rural areas of Nepal. Findings of the study revealed that improved charcoal production technology has positive impacts on forest tree conservation by reducing the fuel wood consumption up to 40% with 60% energy efficiency as compared to the traditional system. The improved charcoal production pilot project has reduced annual CO2, CH4 and CO emissions in the study area by 2.4-3.1, 3.3-4.3 and 2.6-3.5 tons, respectively. Furthermore, improved charcoal production system increases blacksmiths' welfare through generating social, human and economic capital and quality attributes like environmental sustainability. Introducing improved charcoal production and controlling heavy firewood collection at rural villages of Nepal will help to increase carbon sequestration and reduce the sources of carbon emission in context of global climate change. 展开更多
关键词 BLACKSMITH charcoal climate change Nepal.
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LiFePO_4/C的低成本制备及电化学性能研究
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作者 董艳玲 李涛 王雪飞 《华中科技大学学报(自然科学版)》 EI CAS CSCD 北大核心 2011年第8期32-35,共4页
以FePO4.2H2O,Li2CO3和蔗糖为原料,采用碳热还原法合成LiFePO4/C材料.高温合成时采用木炭粉代替惰性气体保护以降低成本,对样品进行X射线衍射分析(XRD)、扫描电子显微镜(SEM)测试和电化学性能分析.结果表明:当合成温度为650℃时合成的... 以FePO4.2H2O,Li2CO3和蔗糖为原料,采用碳热还原法合成LiFePO4/C材料.高温合成时采用木炭粉代替惰性气体保护以降低成本,对样品进行X射线衍射分析(XRD)、扫描电子显微镜(SEM)测试和电化学性能分析.结果表明:当合成温度为650℃时合成的材料具有较好的电化学性能,0.1倍率下首次放电比容量为153.0 mA.h/g,30次充放电循环后容量保持率为95%,具有良好的循环性能. 展开更多
关键词 电化学 LIFEPO4 碳热还原 充放电循环 木炭保护
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