Upholstery velvet manufacturers choose polyester thread types to get optimum profit by using scientific methods. The matter of determining the most convenient polyester thread supplier might be considered as a decision problem. In this study, the issue of determining the most suitable polyester thread supplier of upholstery velvet manufacturer was analyzed by MACBETH-PROMETHEE Hybrid method. Authorities of relevant businesses were chosen as decision makers. Criteria and alternatives were determined by reviewing literature regarding decision makers. The weights of criteria were evaluated by MACBETH method, however, the priority order of alternatives were evaluated separately both MACBETH and PROMETHEE methods. The fit of analyses practiced by two separate multi criteria decision making methods was tested by Spearman Rank Correlation Analysis. As a result of analyses conducted hybrid method, types of brands and threads were determined. The most basic raw material requirement of enterprises that are upholstery velvet producers is polyester thread. If thread is procured using the model of the study, polyester thread will be purchased at both the most affordable price and the desired quality. Findings were shared with authorities of relevant business.

The waste chicken feathers were treated with the enzymes (dissociating disulfide bonds) produced by thermophilic Meiothermus ruber H328, and then the treated feathers were milled and subjected to the hot-press compression molding. It was found that the recrystallization of the feather keratin was interfered with to some extent due to the lack of S-S bonds. On the other hand, the slight reinforcement of the feather resin with the wood fibers was effective to enhance the tensile behavior and the thermal stability of the feather resin.

Multi-hollowed fibers can be fabricated by laser-heated drawing without using heteromorphic nozzles. However, the continuity of the voids in the fiber has not been ascertained. In this study, tomographic images of multi-hollowed fibers with 14% and 63% void fractions produced by laser-heated drawing were obtained by two types of X-ray computed tomography devices, and the images were compared with the cross-sectional scanning electron microscopy (SEM) images. The low X-ray absorption coefficient region was observed for the fiber cross-section of the tomographic image with 2-µm spatial resolution, while many voids with near-circular-shaped cross-sections were individually observed for the fiber cross-section of the tomographic image with 0.15-µm spatial resolution. From these observations, it was revealed that the voids in the fiber were deformed during fiber cutting before the SEM observation, and that the void in the fiber continued along the fiber axis for at least 20 times the void’s diameter.