生物质基喷气燃料的生产及应用进展

生物质基喷气燃料是指全部或大部分来源于生物资源的喷气燃料，符合清洁低碳、安全高效的现代能源体系的要求。以生物质基喷气燃料替代传统石油基喷气燃料有助于我国早日实现“碳达峰、碳中和”的远大目标。在阐述生物质基喷气燃料生产工艺的发展历程及生物质基喷气燃料应用现状的基础上，提出高密度的生物质基喷气燃料是未来喷气燃料的发展方向，具有多环结构的生物质是合成高密度生物质基喷气燃料组分的优质原料；同时，总结了高密度生物质基喷气燃料组分生产工艺的研究进展，展望了生物质基喷气燃料未来的发展及挑战。     

新发展阶段中国水资源安全保障战略对策

进入新发展阶段，中国水资源安全保障需要以“节水优先、空间均衡、系统治理、两手发力”治水思路为指导，厘清问题、研判趋势、优化对策，支撑新阶段水利高质量发展。本文在全面分析我国水资源安全保障存在的突出问题与面临形势基础上，阐述了新发展阶段中国水资源安全保障的基本思路与战略路径，从保证资源安全、构建国家水网、强化供水保障、建设美丽河湖、改善水环境质量等方面提出了战略对策和需要进一步回答的重大问题，以期为完善新发展阶段中国水资源安全保障战略，全面提高国家水资源安全保障能力提供有力支撑。     

Misconceptions of human factors concepts

Abstract

Like many scientific topics, Human Factors, and Ergonomics concepts are susceptible to being misunderstood by people unfamiliar with the subject matter. Most of the time these misunderstandings are harmless, like when a safety poster within a work setting encourages employees to 'overcome complacency'. This misunderstanding of complacency suggests it is a motivational aspect of human behaviour correctable with encouragement, whereas the human factors approach to overcoming complacency would be to evaluate how task design could diminish the destructive consequences of unexpected changes within a routine setting. No harm comes from the message within the safety poster, other than some wasted ink and paper, but misconceptions among particular audiences can eventually result in dire consequences for the human operator. This paper presents recent evidence that the concepts are being misapplied by casual consumers of human factors, particularly in the aftermath of accidents within complex systems, in ways detrimental to the core mission of improving the well-being of the human operator. Later, because this special issue presents new ways to demonstrate value via return on investment, practical efforts we can take to overcome such misconceptions are suggested.     

分子生物技术在果汁鉴伪中应用的研究现状

为探究传统发酵牦牛酸奶及奶酪中细菌群落结构的多样性，采用Illumina Miseq高通量测序对西藏林芝传统自然发酵牦牛酸奶（sn）和酪乳（nl）样品进行细菌群落结构分析。结果表明，酪乳和酸奶样品总计测得有效序列条数分别为（58 455±1 145）条和（57 068±1 263）条，共产生（63±2）个和（25±3）个操作分类单元（OTUs）。酪乳样品的α多样性指较高，具有较高的细菌群落多样性；酸奶和酪乳样品细菌的优势细菌门均为厚壁菌门（Firmicutes），其相对丰度分别为（99.80±3.47）%和（50.76±2.13）%；酸奶样品的优势菌属为乳杆菌属（Lactobacillus）（相对丰度为（74.32±1.23）%），酪乳样品的优势属为乳球菌属（Lactococcus）（相对丰度为（48.44±2.13）%）；酸奶和酪乳样品在属水平的热图分析表明两个样品的细菌群落结构具有差异性和相似性。     

无轨辅助运输现状及发展前景

随着现代化矿井的高产高效,井下无轨辅助运输以载重大、速度快、运输灵活等优势替代了有轨辅助运输。经过多年的发展,无轨辅助设备种类多,功能全,适应于井下各种运输需要。但在发展的同时,无轨辅助运输也存在很多不足之处。针对此现状,从设备智能化、自动化和市场规模扩大化的角度阐述了无轨辅助运输的远大发展前景,对无轨辅助运输行业的发展具有一定的借鉴作用。     

PVC地板行业研究现状及发展趋势

概述了国内外PVC地板行业的生产及应用现状,比较了几种地板材料的优缺点,介绍了PVC地板生产技术的研究进展情况,分析了国内PVC地板行业的发展趋势。     

中美贸易摩擦下的中国大豆产业现状与发展趋势

梳理了中美贸易摩擦下中国大豆产业的现状,分析了大豆产业发展特点的原因,以及未来的变化趋势。分析表明:中国大豆进口的增加主要源于中国大豆油和豆粕市场需求的增长,进口来源国集中于巴西和美国。贸易摩擦将重塑世界大豆种植和贸易格局,中国大豆进口来源国会多元化,大豆替代品国内产量和进口量会有所增加,但大豆依赖进口的局面仍将持续。     

Does interior color contrast enhance spatial memory?

This study investigated the effect of contrast in neutral-, warm-, and cool-colored spaces on spatial memory. Spatial memory was measured in terms of architectural scale and recollection of architectural elements and furniture. Participants (N = 114) viewed a short virtual simulation video of a residential studio and were asked to sketch a map of the architectural elements on distributed grid paper. Spatial memory was measured in terms of scale, and item recall rate. Contrast and hue had no significant effect on the memorization of proportional scale. However, high-contrast schemes allowed for a significantly higher recollection of architectural elements than low-contrast schemes. In comparing the effect of hues, a significant difference was seen in recalling detailed furniture and lighting items. Participants reported significantly better spatial memory of neutral and warm color schemes than of cool color schemes. There was no interaction effect between contrast and hue in the color combinations. These results can be applied in the design of color schemes for architectural spaces requiring enhanced spatial cognition and memory.     

环氧丙烷产业现状及发展趋势

简述了全球及我国环氧丙烷产业的生产及供需现状;对环氧丙烷在聚醚多元醇、丙二醇/碳酸二甲酯、丙二醇醚及其酯类等领域的应用进行了分析;并对环氧丙烷生产技术进行了比较,提出了发展建议。