YAESU WIRES-Ⅱ(维雅兔)使用简报

日本YAESU公司为业余无线电爱好者特别设计开发出一款HAM专用的业余无线电台VoIP通信系统,名叫:WiRES-Ⅱ(Wide-Coverage Internet Repeater Enhancement System),中文名为维雅兔。如果按商业运营的角度去理解,这是一套由YAESU"经营"和提供的完整VoIP服务,但与实质性的经     

SwarmDock and the Use of Normal Modes in Protein-Protein Docking

Here is presented an investigation of the use of normal modes in protein-protein docking, both in theory and in practice. Upper limits of the ability of normal modes to capture the unbound to bound conformational change are calculated on a large test set, with particular focus on the binding interface, the subset of residues from which the binding energy is calculated. Further, the SwarmDock algorithm is presented, to demonstrate that the modelling of conformational change as a linear combination of normal modes is an effective method of modelling flexibility in protein-protein docking.     

The impact of information on perceived air quality--'organic' vs. 'synthetic' building materials

As indoor air quality complaints cannot be explained satisfactorily and building materials can be a major source of indoor air pollution, we hypothesized that emissions from building materials perceived as unfamiliar or annoying odors may contribute to such complaints. To test this hypothesis, emissions from indoor building materials containing linseed oil (organic) and comparable synthetic (synthetic) materials were evaluated by a na?ve sensory panel for evaluation of odor intensity (OI) and odor acceptability (OA). The building materials were concealed in ventilated climate chambers of the CLIMPAQ type. When information was provided about the identity and type of building material during the evaluation, i.e. by labeling the materials in test chambers either as 'organic' or 'synthetic', the OI was significantly lower for all the 'organic' materials compared with evaluations without information. Similarly, OA was increased significantly for most 'organic' samples, but not the 'synthetic' ones. The major effect is probably that OA is increased when the panel is given information about the odor source. PRACTICAL IMPLICATIONS: As providing information about the source of odors can increase their acceptability, complaints about indoor air quality may be decreased if occupants of buildings are well informed about odorous emissions from the new building materials or new activities in their indoor environment.     

Factors affecting the fate of active proteins introduced in wastewater sludges: investigation with green fluorescent protein

Green fluorescent protein (GFP) was used as a reporter protein to investigate the interactions and fate of the active conformation of proteins in wastewater sludge. GFP was chosen because its fluorescence is dependent on the integrity of its native conformation. We identified factors that cause the loss of GFP fluorescence when this protein is introduced in aerobic or anaerobic sludge. In both systems, soluble polymers present in the liquid fraction caused an initial loss of fluorescence, but stabilized the remaining fluorescent GFP molecules. In aerobic sludge, interaction of GFP with the sludge solids initially caused an additional loss of fluorescence but the remaining fluorescence kept fairly constant over the following hours. In anaerobic sludge, on the contrary, interaction of GFP with the sludge solids caused a temperature dependent loss of fluorescence, probably related to the presence of precipitated ferrous sulfide. No direct relationship was found between sludge protease activity and loss of GFP fluorescence, suggesting that proteases are not the primary factor controlling the fate of the active form of proteins in wastewater sludges.