This research works for plain stitch of weft knitted stitch, mainly introduced the curling property of plain stitch and it’s influence factors were given. I will combine with plain stitch's structure characteristics and its unique fringe curling of style to design and produce suitable knitwear to satisfy the increasing needs of ourselves in the modern life. Drape, three dimentional cutting, also means stereo cutting, was taken to the research in order to design and make a middle and long tape skirt with black and gray, together with a white super short T-shirt, we can see the application of fringe culing in the collar, bottom margin, wristband and so on. In short, color in harmony, long and short matching brings to harmonious with nature.
This study shows a optimization usage of SA and PAE on enhancing both wet and dry strength of paper. The influence of the dosage of PAE and the viscosity of SA on the binary system for strengthening of paper have been studied and compared with paper which use PAE alone as a wet strength additive. A optimization ratio of PAE/SA was obtained, and with this ratio unchanged the amount of PAE/SA and initial of pH of the pulp has been tested. Scanning electron microscope (SEM) was used as a assistant method to observe those influence. The results showes that PAE/SA binary strengthening system for paper has a better property than that of PAE alone as a wet strength additive. The optimal viscosity of SA is about 350 mPa•S and the optimal ratio of PAE and SA is 3:2 and the addition of PAE and SA are 0.75% and 0.5% respectively. SEM analyses confirm that the film-forming property of PAE is accelerated by SA and it is also noticeable that the PAE/SA film can stick to the suface of fibres uniformly in the aqueous pulp slurry environment. The reaserch on the effects of the slurries at different pH to the wet and dry tensile strength prove that PAE/SA strength system is more suitable for neutral and alkaline papermaking conditions.
The principle and application of two-dimensional code were introduced by the short distribution, and the information transferring of the clothing label and the anti-counterfeiting technology in clothing field was presented by some examples and the study. The prospects of two-dimensional code in clothing field were put forward.
The frequency response functions (FRFs) are frequently used to identify dynamic properties of the mechanical joints. However, the ill-posed problems of the system are caused by the contamination of measurement noise even if it is processed by reduction technique. In order to solve this problem, put the noised FRFs into identification equations to theoretical derivation, explained the degree of influence on the identified results by noised FRFs in theory. In order to make the identified results represent real properties of the joints, an improved FRFs method was developed based on subtraction term frequency selection, in which the measured data were processed could get high degree of anti-noise frequency before parameters identification. This method avoids the occurrence of ill-posed problems. The results of simulation show that the proposed method can solve the ill-posed problems, thus significantly improve the accuracy of identification.
The quality of high speed machining is directly related to dynamic characteristics of spindle-toolholder interface. The paper established normal and tangential interactions of BT spindle-toolholder interface based on finite element contact theory, and analysed free modal in Abaqus/Standard. Then the result was compared with the experimental modal analysis. It shows that the finite element model is effective and could be applied in the future dynamic study of high-speed spindle system.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.