Wasserverdünnbare Lackmaterialien—strahlenhärtend

For some time now water soluble and radiation curing lacquers are on hand. Today these lacquer-systems are preferably applied to finish sheathing-panels. These materials have, however, been developed in such a way that stainable primers, fillers as well as other finishes, suitable for the industrial practice, can be formulated by means of these lacquer-systems. The main advantages are: no environmental problems, no olfactorial irritation, freeness of monomers, good satin-effect, good durability, and easy cleaning of machinery and other equipment with water. When put on a larger basis of application, it seems to be possible in future, that these lacquer-systems will also become attractive for furniture manufacturers.     

餐厨垃圾与污泥厌氧发酵产气动力学特性研究

对餐厨垃圾、污水厂污泥以及餐厨垃圾与污泥混合甲烷发酵的产气能力与动力学特性进行了实验分析,餐厨垃圾在中温和高温发酵的产甲烷潜能分别是400和426 mL CH4?gVS−1,经过120℃、20 min蒸煮除油后的餐厨垃圾在中温和高温发酵的产甲烷潜能分别是418和531 mL CH4?gVS−1。经Gompertz模型计算,除油后餐厨垃圾的最大产甲烷速率Rmax比除油前提高了49.8%（中温）和19.0%（高温）,但餐厨垃圾中固体有机物的产甲烷速率变化不明显。在餐厨垃圾机械破碎匀浆过程中,部分固体有机物被液化,中、高温发酵产气过程的一级动力学呈现两阶段特征,液相有机物在中温发酵的产甲烷速率（速率常数k = 0.1955 d−1）略快于高温（k = 0.1543 d−1）;而固体有机物在高温条件下的产甲烷速率（k = 0.0804 d−1）快于中温（k = 0.0388 d−1）。除油后餐厨垃圾中的固体有机物和污泥高温发酵的产甲烷速率也快于中温发酵,表明高温发酵有利于提高固体有机物的产气速率。污泥的产气潜能较低,产气速率慢,与餐厨垃圾共发酵有助于调节碱度和防止发酵体系的酸化。     

Cultural Cues in Students' Computer‐Mediated Communication: Influences on E‐mail Style,Perception of the Sender,and Willingness to Help

Computer‐mediated communication among university students with different cultural backgrounds has become widespread. In this study, we examine how undergraduates (N = 130) react to cultural cues when responding to an e‐mail request for cooperation sent by a peer. Participants rated the sender's personality and stated their willingness to help. In the inquiry, 2 types of cultural cues were varied, resulting in a 2 × 2 factorial design: ethnicity (German vs. Chinese name) and communication style (Western vs. Asian). Results showed that participants aligned their responses to the communication style; however, the ethnicity cue influenced the wording of their response, their perception of the sender's personality and their willingness to help. Results are discussed regarding communication accommodation and social judgment theories.     

Aus Wirtschaft und Betrieb

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