医院高层次人才考核评价体系探析

通过分析高层次人才考核评价的原则以及现阶段医院高层次人才考核评价体系的现状及特点,指出现行高层次人才考核评价体系存在的问题.采取建立健全高层次人才评审评价组织机构、优化考核评价过程、充分利用好评价结果等途径,力求做到评价体系的科学合理、公平公正、简明高效、注重实绩,并对医院的整体发展起到促进作用.     

超高效液相色谱-串联质谱法测定鸡肉和鸡蛋中5种硝基咪唑类药物残留量

目的 采用超高效液相色谱-串联质谱法(UPLC-MS/MS),建立鸡肉和鸡蛋中5种硝基咪唑类药物的检测方法。方法 样品经乙腈提取后,加入无水Na₂SO₄和NaCl,离心后上清液通过PRiME HLB固相萃取小柱净化,滤出液和乙腈洗脱液经氮吹至近干,10%甲醇水(v/v)溶液定容。以0.1%甲酸水-甲醇为流动相,被测物经BEH C18柱(2.1 mm×100 mm,1.7μm)分离、正离子多反应监测模式检测,内标法定量。结果 5种硝基咪唑在0.2～20.0 ng/ml范围内相关系数均大于0.999,方法检出限为0.05～0.10μg/kg,定量限为0.15～0.30μg/kg。在3个加标水平下(0.25、2.0和10.0μg/kg),鸡肉和鸡蛋的平均回收率分别为97.9%～106.0%和97.8%～110.0%,相对标准偏差(RSD)分别为0.9%～6.4%和1.0%～4.7%。结论 该方法简便、灵敏、准确,适用于鸡肉和鸡蛋中5种硝基咪唑残留量的快速检测。     

炉甘石洗剂制备工艺的改进

目的:改进炉甘石洗剂的制备工艺,使其制备过程简单化,并易于在药厂制剂车间操作.方法:采用润湿浸泡法制备炉甘石洗剂,通过沉降容积比、翻转次数、含量及临床应用的比较,判定改进后的方法是否可行.结果:改进工艺后制得的炉甘石洗剂,在沉降容积比、翻转次数、含量等方面无明显变化,与原法制得的炉甘石洗剂无显著性差异.结论:改进后炉甘石洗剂的制备方法可行.     

氯地滴耳液的配制及主药的含量测定

目的:制备氯地滴耳液并建立其质量控制方法。方法:以氯霉素、地塞米松磷酸钠为主药制成滴耳液,采用高效液相色谱法测定这两组分含量。结果:氯霉素和地塞米松磷酸钠的线性范围分别为125~1 250μg/m l(r=0.999 7)、2.5~25.0μg/m l(r=0.999 1),平均加样回收率分别为99.77%(RSD=0.38%)、98.06%(RSD=0.42%)。结论:该制剂配制简单,成本低,质量可控。     

陕西省燃煤型氟中毒病区及改炉灶进展调查

目的 了解陕西省燃煤型氟中毒病区的分布，掌握改炉灶降氟进度，为氟中毒病区制定改炉灶规划提供依据。方法 对陕西省燃用石煤区的8～12岁儿童进行氟斑牙检查，按氟斑牙患病率进行病区划分，同时登记病区改炉灶进展情况。结果 在2市9个县(区)124个乡镇1666个村，划分出病区村1309个，受危害25．06万户、97．79万人。目前已经改炉灶3．48万户，受益13．75万人，尚有21．58万户、84．04万人急需改炉灶。燃用石煤的病区人口以每年10％的速度递增，改炉灶率仅为13．90％，低于全国平均水平。结论 由于退耕还林政策的实施，中、高山区居民逐渐下迁，病区范围继续扩大，仍要维持一定时间。居民燃料结构逐渐向多元化发展，清洁燃料和低氟煤炭的输入，将会为综合治理提供有利条件。建立可持续发展的销售服务、技术指导网络迫在眉睫。     

耐多药结核病防治绩效评价指标体系构建

目的 构建一套耐多药结核病防治工作绩效评价的指标体系.方法 通过文献综述初步构建评价指标体系,经两轮德尔菲(Delphi)专家咨询法获取专家对指标体系的意见并计算相应参数,采用模糊综合评判法计算各级指标的权重.结果 19名结核病防治领域的专家参与本研究,平均年龄44.26岁,从业年限平均为19.42年.两轮专家咨询的积...     

Durability Improvement of Biocemented Sand by Fiber-Reinforced MICP for Coastal Erosion Protection

Soil improvement via MICP (microbially induced carbonate precipitation) technologies has recently received widespread attention in the geoenvironmental and geotechnical fields. The durability of MICP-treated samples remains a critical concern in this novel method. In this work, fiber (jute)-reinforced MICP-treated samples were investigated to evaluate their durability under exposure to distilled water (DW) and artificial seawater (ASW), so as to advance the understanding of long-term performance mimicking real field conditions, along with improvement of the MICP-treated samples for use in coastal erosion protection. Primarily, the results showed that the addition of fiber (jute) improved the durability of the MICP-treated samples by more than 50%. Results also showed that the wet–dry (WD) cyclic process resulted in adverse effects on the mechanical and physical characteristics of fiber-reinforced MICP-treated samples in both DW and ASW. The breakdown of calcium carbonates and bonding effects in between the sand particles was discovered to be involved in the deterioration of MICP samples caused by WD cycles, and this occurs in two stages. The findings of this study would be extremely beneficial to extend the insight and understanding of improvement and durability responses for significant and effective MICP treatments and/or re-treatments.     

A Step towards Concrete with Partial Substitution of Waste Glass (WG) in Concrete: A Review

The annual worldwide production rate of waste glass is a million tons; the waste glass is non-biodegradable, resulting in environmental pollution. However, the chemical composition of waste glass (WG) is promoted to be used as a partial substitution of binding or filler (aggregate) material in concrete production. Although significant research has been conducted in this area, the results of these studies are scattered, and it is difficult to judge the suitability of waste glass in concrete. This review looks at the effects of waste glass on concrete’s fresh, mechanical, and durability properties. It concludes that waste glass decreased the flowability of concrete. Furthermore, waste glass can be used as pozzolanic material, creating secondary cementitious compound (CSH) gel. CSH gel increased the cement paste’s binding properties, leading to increased mechanical performance. Moreover, this study reveals that the optimum dose of waste glass is important to minimize the possibility of an alkali–silica reactions. Based on this review, most researchers conclude that 20% substitution of waste glass as binding material is the optimum dose. The wide range of discussion provides the necessary guideline for the best research practice in the future.     

Waste Foundry Sand in Concrete Production Instead of Natural River Sand: A Review

The by-product of the foundry industry is waste foundry sand (WFS). The use of WFS in building materials will safeguard the ecosystem and environmental assets while also durable construction. The use of industrial waste in concrete offsets a shortage of environmental sources, solves the waste dumping trouble and provides another method of protecting the environment. Several researchers have investigated the suitability of WFS in concrete production instead of natural river sand in the last few decades to discover a way out of the trouble of WFS in the foundry region and accomplish its recycling in concrete production. However, a lack of knowledge about the progress of WFS in concrete production is observed and compressive review is required. The current paper examines several properties, such as the physical and chemical composition of WFS, fresh properties, mechanical and durability performance of concrete with partially substituting WFS. The findings from various studies show that replacing WFS up to 30% enhanced the durability and mechanical strength of concrete to some extent, but at the same time reduced the workability of fresh concrete as the replacement level of WFS increased. In addition, this review recommended pozzolanic material or fibre reinforcement in combination with WFS for future research.