The comparison and analysis for the preparation of related performance indicators of the thermal protection such as the ablation resistance performance, thermal stability at high temperature and reflection ability of the heat ray of kaolin double-layer coated flexible composites were carried on. Because of the 2 d stratified structure of kaolin, and at the same time it processes the higher refractoriness, excellent resistance to the elevated temperature, the certain heat insulation and the reflection performance of the heat ray, the adequate padding of kaolin can improve the prepared thermal protection ability of double-layer coating of flexible composites.
The influence on polyester knitted fabrics’ dielectric constant of each fabric organization structure of knitted fabrics were discussed by a single factor test method, and made a good choice from various polyester knitted fabric knitting parameters so as to the polyester knitted fabric was provided with the maximum real part and imaginary part of the dielectric constant. The results showed that when the structure of polyester knitted fabric was 2+2 rib, polyester knitted fabric had a good microwave absorbing property in these knitting parameters.
Key message
Barium aspiration into the tracheobronchial tree is a remarkable warning sign of dysphagia‐related aspiration pneumonia. Clinical swallowing assessment is warranted for patients with aspiration pneumonia and videofluoroscopic swallowing study is a good add‐on tool for dysphagia treatment plan. In patients with Parkinson's disease, dysphagia is often overlooked due to atypical presentations.
In order to effectively reduce the crop stubble harvesters digging resistance, enhance stubbles picking rate and intact stubble rate, the Research Group took structure improvement for the Crop stubble harvester and its critical component based on abundant trials. Three physical machines in succession were developed, and a trial contrastive analysis between the optimized harvester and the first harvester was conducted. It turned out that the improved harvester machine was clearly superior to the first machine.
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