考虑集雨效率和生态效应的近自然集雨面综合评价比选

针对香格里拉普朗铜矿区高陡边坡植被修复无灌溉水源的问题,结合当地的降雨特点,在不影响原生境的情况下,开展SCA-2配合比试验、集雨试验并利用AHP层次分析法和模糊综合评价模型分析了不同类型集雨面的集雨效率及集雨优劣情况。结果表明,研究区土壤与SCA-2型土壤固化剂最佳使用配比为0.45%(质量占比);与自然坡面(T1)、夯实坡面(T2)和塑膜坡面(T3)相比,最优配比SCA-2处理坡面(T5)的集雨效率明显增加,仅次于混凝土坡面(T4),5种集雨面的平均集雨效率从大到小的顺序为T4>T5>T3>T2>T1;从生态、经济、耐久和高效4个指标进行评价,5种集雨面的优劣顺序为T5>T4>T3>T1>T2,可推得最优配比SCA-2处理坡面是一种相对更经济、生态的近自然集雨面。

口腔医用耗材物流链的优化与改进

目的:优化医用耗材物流配送链,实现医院耗材物流配送全覆盖。方法:调研原有口腔医用耗材物流链的弊端,收集临床科室的意见和建议,从医用耗材采购计划执行、耗材验收、物流配送和二级库管理4个关键环节进行重点改进。在信息流上通过医用耗材管理系统和供应商云平台提供信息支撑。结果:建立了新的口腔医用耗材物流链,保证了耗材安全,缩短了配送时间,提高了工作效率。结论:该物流链有效保证了医用耗材的供应,规范了二级库管理制度,实现了口腔医用耗材管理的科学化和精细化。

基于全生命周期的口腔医用耗材档案优化管理

目的:建立规范化和科学化的口腔医用耗材档案管理制度,为医院耗材管理提供支持。方法:分析口腔医用耗材档案管理现状及存在的主要问题,对口腔医用耗材准入档案、资质档案、计划档案、供应档案和使用档案进行优化,提出溯源痕迹化管理和档案专业管理等改进方法,制定医院口腔医用耗材档案管理标准和制度。结果:建立存档医用耗材资质约150份,涵盖3500多种医用耗材资质,整理装订入、出库档案250余本,验收单据500余本,溯源档案平均查找时间由原来>20 min缩短至现在的5 min。结论:口腔医用耗材档案管理标准与制度的建立,实现了对耗材档案管理的优化与改进,极大地规范了医用耗材档案管理工作,为医用耗材精细化管理提供方法与保障。

Formation and evolution of Emeishan basalt saprolite in vadose zones of Touzhai landslide source rockmass

In order to explain the formation process of slope hazards, and to identify the key factors leading to instability of a slope, Emeishan basalt saprolite in vadose zones of the Touzhai landslide in Zhaotong, Yunnan, was studied. The formation and evolution of Emeishan basalt saprolite was examined using, amongst other techniques, field investigations,thin section analysis, scanning electron microscopy(SEM) observations, chemical analysis, physical and water-physical property tests of rock masses. Field observations revealed that the majority of the weathered rock blocks were presented as a concentric layer structure in which an internal corestone was enveloped with several layers of external saprolized crust. Chemical and mineralogical analysis identified that iron was the most sensitive element and that the weathering progress usually started with the oxidation of Fe2+ to Fe3+ in rock blocks. Alkaline elements such as Si, Ca, Mg, Na and K were also dissolved and Fe and Al were concentrated in saprolized crusts. Results indicated that loss on ignition(LOI) also increased significantly. SEM results showed that the weathering intensity of thebasalt blocks decreased gradually from the outside to the inside, and the mineral morphology significantly differed on both sides of the weathering front. The saprolized crusts presented cellular microstructure features due to the generation of micropore and clay minerals. Thin section analysis showed that plagioclase was relatively more stable than pyroxene and chlorite during weathering. With a centripetal propagation of the weathering front, saprolized crusts became thicker and corestones became smaller; fresh Emeishan basalt blocks gradually turned into saprolized blocks. Due to the loose structure and low strength of saprolite, the quality of the Emeishan basalt mass significantly deteriorated, this being a potentially important factor which caused the Touzhai landslide to occur.

Earthquake dynamic response behavior of Xiangchong valley type tailings impoundment in Yunnan, China

Tailings impoundments can potentially collapse due to damage caused by earthquakes,which has frequently occurred around the world.This study takes the proposed valley type tailings impoundment in Yunnan as the research object to analyze the dynamic response behavior under earthquake action with both numerical simulation and physical model test(1:300).The results of both tests show that the dynamic response of the valley type tailings impoundment is characterized by"medium stiffness effect",in other words,in a certain range,the"softer"the unsaturated tailings sand is,the more energy it can dissipate,which leads the decrease of the value of the acceleration amplification factor.In addition,the peak acceleration of the monitoring points increases with the vertical elevation,which indicates that the"elevation amplification effect"exists in the tailings impoundment dynamic response.The middle part of the outer side of the raised embankment reacts more sensitive than the crest,which is similar to the slope dynamic response.The starter dam reacts sensitively under the earthquake excitation,which should be given more attention during the seismic design.The dynamic response rules reflected by the numerical simulation are consistent with the results monitored on the physical model test,although there are some differences between their values.The dynamic response rules of the valley type tailings impoundment can provide basis for the design of the similar projects in this region.

口腔医用耗材分类编码方案的设计与实行

目的:设计一套新的口腔医用耗材分类编码方案,为医院医用耗材管理提供支持。方法:分析原有口腔医用耗材编码存在的主要问题,研究口腔医用耗材的分类方法,制订6级编码方案,并通过口腔充填修复类耗材和口腔种植及组织重建类耗材进行验证。结果:经过实例验证,新的编码方案有利于医用耗材分类管理的实施,对医用耗材目录遴选、科室计划、采购发放、临床使用、监测评价等各个环节都有着重要的作用,为口腔医用耗材全生命周期管理提供保障。结论:新编码方案的使用提高了耗材管理的工作效率,规范了口腔医用耗材的管理工作,保证了医用耗材管理的精确性、科学性。

浅谈传统手工锻造技艺的保护与传承——以大理鹤庆新华村白族银饰为例

手工锻造技艺是银饰制作过程中的根本及精华所在,作为非物质遗产它的发展成为了民族文化研究者们重点讨论的问题。本文是以白族银饰手工锻造技艺为研究对象。探究其面临的问题,落脚于传统手工艺锻造技艺的保护与传承上,以手工锻造技艺所面临的问题、保护与传承的措施三方面进行分析。针对发现的问题并采取相应的保护措施,在此基础上进行文化传承,从而为其发展开辟一个新的方向。

口腔种植体系统采购溯源流程探讨与改进

目的:开发新的口腔种植体系统采购溯源流程,为医院耗材管理提供支持。方法:调研原有口腔种植体系统采购溯源流程存在的主要问题,提出统一采购、货码同行、制度提升与单个患者信息核对等方法改进溯源系统的各环节。结果:制定了新的种植体系统溯源管理流程,保证了溯源管理的完整性,为种植体系统的科学管理提供了平台与保障。结论:该溯源流程规范了口腔种植体系统的管理工作,保证了种植工作的科学性、准确性与安全性。