CFM56-7B发动机滑油渗漏及耗量监控简析

本文主要针对CFM56-7B发动机高滑油消耗率故障,对易导致滑油渗漏的相关部件进行了简要分析,并结合重庆维修基地的实际维护经验,介绍了日常发动机滑油消耗率的监控方式方法。     

Institutional factors affecting wild edible plant (WEP) harvest and consumption in semi-arid Kenya

Pervasive food insecurity and poverty in much of the world drives vulnerable populations to harvest natural resources as a means of generating income and meeting other household needs. Wild edible plants (WEPs) are a particularly common and effective coping strategy used to increase socio-ecological resilience in Sub-Saharan Africa where agricultural systems are often sensitive to environmental perturbations and instability. WEPs are collected across the landscape, from agricultural areas to government-managed hilltops with varying degrees of success and legality. This multiple case study research, conducted in Eastern Province, Kenya, investigates the formal forest regulations and land tenure rights, as well as local enforcement and understanding of those rules, in order to understand their impact on the ability of vulnerable populations to use WEPs as a coping strategy. The results suggest that widespread confusion, trust issues and a strong focus on the commercialization of wild foods are limiting the possible contribution of WEPs to food security and increased socio-ecological resilience. We identify a number of policy changes and extension programs that could better support local communities relying on WEPs for subsistence purposes to improve their adaptive capacity.