The Diffusible Signal Factor Family of Bacterial Cell?Cell Signals

Bacterial cell-to-cell signals of the diffusible signal factor (DSF) family are cis-2-unsaturated fatty acids that differ in their chain length and branching patterns. Signaling involving DSF family members occurs in diverse bacteria to include plant and human pathogens. In the majority of these organisms, the perception of DSF is linked to turnover of the second messenger cyclic di-GMP by one of two “core” pathways. Additional “accessory” signal transduction pathways can also be found, but are not widely conserved. DSF signaling acts to regulate diverse functions to include biofilm formation and architecture, antibiotic resistance, and the production of virulence factors in pathogens. DSF family signals can also participate in interspecies signaling with other bacteria and interkingdom signaling with the yeast Candida albicans. Such interactions may have importance in modifying microbial behavior during polymicrobial infections.     

黄金制品表层颜色变化的原因分析及处理方法

分析了黄金制品表面红斑与白斑的形成原因,在模拟条件下进行验证,并进行了消除红斑、白斑试验。结果表明,黄金制品表面的红斑可能为杂质氧化形成,可用热稀盐酸清洗去除;黄金制品表面的白斑可能为金汞齐,经450℃/30 min+910℃/10 min热处理可消除。2种处理方法对黄金制品原有表面光泽影响都很小,且都不影响原有成色以及质量。     

Fit‐first to be tied

This poem summarizes the fit‐first method of camera evaluation described in Jim Worthey's “Applications of vectorial color.” The algorithm works with the locus of unit monochromats (LUM) in camera and CIE color‐matching spaces. © 2011 Wiley Periodicals, Inc. Col Res Appl, 2011;     

探讨铜在双银Low-E中的应用

针对双银Low-E玻璃透过色偏蓝等原因,探讨在第一层Ag后面插入一层Cu靶,使得双银Low-E玻璃透过色呈中性,满足广大客户对颜色的需求,同时还保留高效的热工性能参数。     

当前形势下既有住宅工程质量投诉处理工作的思考

通过整理近年来住宅工程质量投诉案例及数据，总结了当前投诉事件具有维权意识主动化、投诉渠道多样化、关注细节化、注重维权时效性等特点，分析了产生投诉的主要原因，结合现有的投诉处理模式，在机构改革、法制建设、法规宣传、管理创新等方面提出了投诉处理工作的一些设想，为探索当前形势下如何更好地处理投诉工作提供一定的参考。     

天津贝克PROMOS通讯控制常见故障及排除方法

天津贝克PROMOS监控系统是一种适用于各种控制任务的通用型、高性能、高可靠性的工业自动化系统，它适用于煤矿井下有甲烷和煤尘危险的环境中。该系统中的产品采用简便快捷的直插式插接件相连．现场连接、更换方便，系统有较强的适用性和可扩展性，易于形成适应于整个采区及至全矿井的的通讯控制系统。系统主要由本安电源、控制器、接口箱、扩音电话、急停开关、智能电话、传感器、AST线缆、终端构成。     

云制造环境下服务监管角色的评估与选择

为加强对云制造环境下服务模式的监管,在分析概括已有三类制造服务模式的基础上,从安全性的角度考虑,提出一种基于可信第三方监管的云制造服务模式,并针对第三方监管角色的评估与选择问题,从三个维度构建其可信评估指标体系,采用网络分析法进行计算。通过实例分析了云制造环境下可信第三方服务监管角色评估与选择的具体过程。     

Comparison of the performance of masterbatch and liquid color concentrates for mass coloration of polypropylene

The properties of polypropylene (PP) mixed with masterbatch (MB) and liquid color concentrates (LCC), respectively, were compared by preparing samples of PP with MB and PP with LCC and neat PP as a reference material using 1–4 extrusion cycles. Two colors were examined, i.e., a white color consisting of pigment white 6, and a green color consisting of pigment white 6, pigment blue 15:3, and pigment green 7. The color difference between PP prepared with MB and LCC was determined and the mechanical, rheological, and crystalline properties of PP prepared with MB and LCC were found to be generic. The color of PP obtained from MB and LCC were comparable. Further, it was found that the tensile strength, the viscosity, and the crystal structure obtained were similar when using LCC instead of MB. The viscosity of the treated PP generally decreased with increasing extruder retention time due to thermal degradation. The tensile strength and the crystal structure were independent of increased extruder retention time. © 2015 Wiley Periodicals, Inc. Col Res Appl, 41, 484–492, 2016     

An ergonomic study of visual optimization by light color managements

Light‐emitting diodes (LEDs) have the advantage of controllable light colors and provide the optimal lighting quality against various color attributes required in different environments. However, from the humanized design point of view, beside satisfying physical demands of people, it is also important to achieve satisfaction. With a good match between the LED lighting equipment and ambient colors, the space imagery that complies with psychological needs of human beings can be found. This is expected to become a new market direction for future lighting. In this study, the LED light source feature of adjustable correlated color temperature is used to match wall colors of typical commercial spaces and for the investigation and analysis of the impact of colors of light sources and environments on human beings. The measures of mental and subjective feelings of a group of people under various circumstances have also been investigated. Multivariate analysis of variance has been conducted on three color temperatures of light sources, six wall colors, and measures of five emotion adjectives, and the correlation between these three variables has been further investigated. © 2014 Wiley Periodicals, Inc. Col Res Appl, 41, 72–84, 2016     

Impact of extinction coefficient of phosphor on thermal load of color conversion elements of phosphor converted LEDs

Besides their direct impact on the respective correlated color temperature, the extinction coefficient and the quantum effi- ciency of the phosphor also have tremendous impact on the thermal load of the color conversion elements of phosphor converted LEDs under operation. Because of the low thermal conductivity of the silicone matrix in which the phosphor particles are typically embedded, the by far highest temperatures within the LED assembly are reached within the color conversion element. Based on a combined optical and thermal simulation procedure we show that in particular a larger value for the extinction coefficient might have a beneficial impact on the resulting thermal load.