Low Temperature Drying With Air Dehumidified by Zeolite for Food Products: Energy Efficiency Aspect Analysis

Developments in low temperature drying of food products are still an interesting issue; especially with respect to the energy efficiency. This research studies the energy efficiency that can be achieved by a dryer using air which is dehumidified by zeolite. Experimental results are fitted to a dynamic model to find important variables for the drying operation. The results show that ambient air temperature as well as the ratio between air flow for drying and air flow for regeneration, affect the energy efficiency significantly. Relative humidity of used air, and shift time have a minor effect on the dryer performance. From the total work, it can be noted that the dryer efficiency operated at 50-60°C achieves 75 percent, which is attractive for drying of food products

Exploring the Implementation of Lesson-Level UDL Principles Through an Observation Protocol

The researchers piloted an observational protocol to examine the Universal Design for Learning (UDL) principles and checkpoint strategies used during daily instruction with a small sample of general and special education teachers. Observational research on UDL has been recommended within the literature. Researchers used the high-leverage practice of explicit instruction as the anchor for the design of the observation protocol. Findings indicate there is alignment between observed UDL principles and strategies employed at the lesson level and teachers’ self-reports of the UDL principles and strategies employed. Findings also suggest that teachers are using several UDL principles within their daily instruction and that there is overlap among UDL checkpoint strategies and aligned UDL principles. Essential UDL principles that pre-service and in-service teachers are expected to deliver at the lesson level can be prioritised to ensure a developmental approach to the implementation of UDL. Implications and recommendations for future research are discussed

Post-observation conversations in the museum: using the self-evaluation of the supervisee as the starting point

Post-observation conversations are often used to discuss the quality of teaching and education; however, little is known about the use of this method for the evaluation of teaching in museums. Drawing on interviews, in the first research question, we explored how museum guides (n = 14) and educators (n = 8) perceived a post-observation conversation when they used the guide's self-evaluation as the starting point. This is in contrast to the educator (observation) directed conversations that currently prevail in the participating museums, all located in the Netherlands. For the second research question, we coded seven conversations in order to investigate the guides’ and educators’ actual participation. Results indicate that guides felt a sense of ownership; furthermore, the participants evaluated the conversations as more equally balanced. Analysis of the conversations confirmed that there was a balanced interaction and that the guides greatly influenced the conversation's content

Subnormal short‐latency facial mimicry responses to dynamic emotional facial expressions in male adolescents with disruptive behavior disorders and callous‐unemotional traits

Using still pictures of emotional facial expressions as experimental stimuli, reduced amygdala responses or impaired recognition of basic emotions were repeatedly found in people with psychopathic traits. The amygdala also plays an important role in short‐latency facial mimicry responses. Since dynamic emotional facial expressions may have higher ecological validity than still pictures, we compared short‐latency facial mimicry responses to dynamic and static emotional expressions between adolescents with psychopathic traits and normal controls. Facial EMG responses to videos or still pictures of emotional expressions (happiness, anger, sadness, fear) were measured. Responses to 500‐ms dynamic expressions in videos, as well as the subsequent 1500‐ms phase of maximal (i.e., static) expression, were compared between male adolescents with disruptive behavior disorders and high (n = 14) or low (n = 17) callous‐unemotional (CU) traits, and normal control subjects (n = 32). Responses to still pictures were also compared between groups. EMG responses to dynamic expressions were generally significantly smaller in the high‐CU group than in the other two groups, which generally did not differ. These group differences gradually emerged during the 500‐ms stimulus presentation period but in general they were already seen a few hundred milliseconds after stimulus onset. Group differences were absent during the 1500‐ms phase of maximal expression and during exposure to still pictures. Subnormal short‐latency mimicry responses to dynamic emotional facial expressions in the high‐CU group might have negative consequences for understanding emotional facial expressions of others during daily life when human facial interactions are primarily dynamic

Viscoelastic liquid crystal colloids for the continuous processing of twisted nematic electro-optical cells

Liquid crystal colloid materials are described based on the liquid crystal (LC) E7 and submicron sized poly(methyl methacrylate-co-divinylbenzene) particles. Application of a thermal treatment to the composite material produces a finely dispersed network of the internally crosslinked polymeric inclusions in the LC-E7. Dynamic rheological measurements on the LC colloids show that the presence of this network imposes pronounced viscoelastic behavior on the material, which may be exploited in the manufacturing of large-area twisted nematic (TN) electro-optical cells via continuous methods as an alternative to the currently available batchwise routes. The electro-optical characteristics of TN cells based on the composite material are approximately comparable to the electro-optical characteristics of a reference cell filled with pure LC E7, which ensures that the largely increased viscoelasticity of the composite does not lead to a degradation of electro-optical propertie