Presented a new coal dust control program that was airtight negative pressure dust-control technology at the transpersite,combining with analysis with the movement of air currents and numerical simulation of gas-solid...Presented a new coal dust control program that was airtight negative pressure dust-control technology at the transpersite,combining with analysis with the movement of air currents and numerical simulation of gas-solid flow at the transpersite,and proved the mechanism of precipitation and proliferation for coal dust-controlt in theory.The technol- ogy has made good economic results at the Heidaigou Clean Plant,not only dust concen- tration control within 10 mg/m^3 to the work site,but also substantial energy savings and cost savings.展开更多
Based on the analysis of the top-coal movement, the appropriate position of holes through which dustcoutrol water is injected is confirmed. And a practical test has been carried out, which has achieved good reuslts bo...Based on the analysis of the top-coal movement, the appropriate position of holes through which dustcoutrol water is injected is confirmed. And a practical test has been carried out, which has achieved good reuslts both in dust control and in the flow rate of water injected into coal.展开更多
目的通过循证护理学方法,检索、评价并总结尘螨过敏人群的室内环境控制最佳证据,为室内尘螨防控和环境控制提供依据。方法检索BMJ Best Practice、UpToDate、BMJ Clinical Evidence等决策支持系统,国际和国家级指南库,以及Cochrane、Pub...目的通过循证护理学方法,检索、评价并总结尘螨过敏人群的室内环境控制最佳证据,为室内尘螨防控和环境控制提供依据。方法检索BMJ Best Practice、UpToDate、BMJ Clinical Evidence等决策支持系统,国际和国家级指南库,以及Cochrane、PubMed、Embase等数据库。检索关于室内尘螨防控的临床实践指南、证据总结、专家共识、系统评价、Meta分析,检索时限为建库至2023年12月24日。由2名研究者进行文献质量评价和资料提取。结果共纳入17篇文献,包括3篇临床决策、3篇指南、1篇证据总结、1篇专家共识、7篇系统评价和2篇Meta分析,归纳总结了25条最佳证据,主要涵盖以下内容:(1)人群干预:对于尘螨过敏原检测阳性或出现过敏症状的患者,建议采取多种联合措施控制尘螨过敏原;(2)湿度控制:通过除湿机、空调等设备控制室内相对湿度为35%~50%,结合使用湿度计监测;(3)家具和生活用品:建议移除地毯、毛绒玩具等易积尘物品,选择防螨床罩、枕套等过敏原屏障;(4)控螨措施:物理杀螨法(如加热、冷冻)及使用杀螨剂有效降低过敏原浓度;(5)定期使用HEPA吸尘器清洁室内环境;(6)家访与宣教:定期家访和过敏原管理教育可显著降低过敏原暴露并减少过敏症状。结论该研究总结的尘螨过敏性疾病患者室内环境控制最佳证据较为科学、全面,医护人员应根据环境实际、家庭情境对证据进行选择,为患者制订安全、科学、个体化的环境控制计划,以促进患者康复。展开更多
文摘Presented a new coal dust control program that was airtight negative pressure dust-control technology at the transpersite,combining with analysis with the movement of air currents and numerical simulation of gas-solid flow at the transpersite,and proved the mechanism of precipitation and proliferation for coal dust-controlt in theory.The technol- ogy has made good economic results at the Heidaigou Clean Plant,not only dust concen- tration control within 10 mg/m^3 to the work site,but also substantial energy savings and cost savings.
文摘Based on the analysis of the top-coal movement, the appropriate position of holes through which dustcoutrol water is injected is confirmed. And a practical test has been carried out, which has achieved good reuslts both in dust control and in the flow rate of water injected into coal.
文摘目的通过循证护理学方法,检索、评价并总结尘螨过敏人群的室内环境控制最佳证据,为室内尘螨防控和环境控制提供依据。方法检索BMJ Best Practice、UpToDate、BMJ Clinical Evidence等决策支持系统,国际和国家级指南库,以及Cochrane、PubMed、Embase等数据库。检索关于室内尘螨防控的临床实践指南、证据总结、专家共识、系统评价、Meta分析,检索时限为建库至2023年12月24日。由2名研究者进行文献质量评价和资料提取。结果共纳入17篇文献,包括3篇临床决策、3篇指南、1篇证据总结、1篇专家共识、7篇系统评价和2篇Meta分析,归纳总结了25条最佳证据,主要涵盖以下内容:(1)人群干预:对于尘螨过敏原检测阳性或出现过敏症状的患者,建议采取多种联合措施控制尘螨过敏原;(2)湿度控制:通过除湿机、空调等设备控制室内相对湿度为35%~50%,结合使用湿度计监测;(3)家具和生活用品:建议移除地毯、毛绒玩具等易积尘物品,选择防螨床罩、枕套等过敏原屏障;(4)控螨措施:物理杀螨法(如加热、冷冻)及使用杀螨剂有效降低过敏原浓度;(5)定期使用HEPA吸尘器清洁室内环境;(6)家访与宣教:定期家访和过敏原管理教育可显著降低过敏原暴露并减少过敏症状。结论该研究总结的尘螨过敏性疾病患者室内环境控制最佳证据较为科学、全面,医护人员应根据环境实际、家庭情境对证据进行选择,为患者制订安全、科学、个体化的环境控制计划,以促进患者康复。
