Papers by Keyword: Morphological Characteristics

Abstract: Electrospinning as a high-functioning, multi-operated, and advanced method of nanofiber production allowing to obtain fibrous materials based on different polymers for a wide range of biomedical and bioengineering applications. Hyaluronic acid is one of the most promising polymers for nanofiber formation due to its unique biological and biochemical properties. In spite of the difficulties and special features of the electrospinning from hyaluronic acid solutions, the amount of studies in this field is ever-growing. Unfortunately, there is a significant shortage of fundamental data describing the relations between the technological parameters and the nanofiber morphology. This study considers the key technological parameters of the electrospinning process such as applied voltage and flow volume rate and evaluates their influence on the morphology, mean diameter, and diameter distribution width of nanofibers based on native hyaluronic acid. The optimal range of the defined parameters has been established, at which the stability of the fiber formation is ensured. It is shown that by varying of the applied voltage and the flow volume rate of the polymer spinning solution, it is possible to control the properties of nanofibers.

Abstract: Steel slag, taking up about 20% of crude steel output in China, has caused many serious problems to environment, such as soil damage, water pollution. Research on the way of effective application of steel slag is always a hot topic. The utilization of steel slag in road construction as coarse aggregate is a promising way. Many researches on the mechanical characteristics of steel slag based HMA have been conducted in laboratory, and the quality indexes of steel slag such as angularity coefficient, dust content can be controlled by artificial way due to small demand for research destination. The lack of effective way to control the quality indexes of steel slag aggregate during processing is one of the main factors that limits its wide use in entity projects. In order to express the significance of quality control in steel slag aggregate production, this paper estimates the effect of different morphology on high-temperature performance of steel slag based HMA. High-temperature performances were carried out by wheel tracking test and permanent deformation test, results were discussed in this research.

Abstract: To overcome disadvantages of traditional detection methods of wood flour mesh number, a mesh number recognition algorithm based on external rectangle fitting and morphological characteristics has been studied. It makes use of minimum external rectangle with the boundary points obtained by the preprocessing of microscopic images. The external rectangles length is calculated when the area is the smallest. The experimental results demonstrate that the proposed algorithm has a good fitting accuracy and meets producing demands.

Abstract: This article take the folk dwelling in QiaoZhuang Village of Mengjin County as a carrier, from two aspects that is the ecology and the shape summarized the compatibility of the kiln--courtyard residence in the west of Henan Province. The natural energy is made full use of in the village location, and according to the local conditions, conservation of the land. The appropriate materials and techniques are adopted and courtyard form is adopted. These have reference for contemporary residential design.

Abstract: The main work of this paper is the test of morphological structure and Infrared spectrum of Germanium fiber , strength、humidity content、fineness uniformity、humidity content and resistance to acids and bases of Germanium yarns, to prove that the special properties of the Germanium fiber yarn suitable for the production of health next-to-skin apparel. Aimed at providing the relative theoretical guidance and preparation of personal clothing and fabrics when to use the Germanium fiber blended yarn for producing the next-to-skin apparel in the textile sector .

Abstract: The visualization of individual tree dynamic growth process provides a more intuitively visual display of individual tree growth process and effectively supports the forestry education and scientific researches. This paper presents an approach of combining the systematic analysis method and mathematical modeling techniques to realize the visual expression of the dynamic growth process of individual Mongolian pines in plantations. Quantitative analysis of morphological data and theoretical growth equation lay the foundation for establishing the dynamic growth model of individual Mongolian pines, which includes a primary branch diameter (BD) growth model, a primary branch length (BL) growth model, a height growth model, a diameter at breast height (DBH) growth model, a height of clear branches (HCB) growth model and a crown length (CL) growth model. Consolidating results of previous study--crown structure models and the development platform of VC++6.0 and OpenGL, we successfully established the virtual visualization system of individual tree growth for Mongolian pine plantation, and therefore implemented the nice integration of growth mechanism and morphological characteristics of individual Mongolian pines in plantation. The visual expression of individual tree growth provides a prerequisite for the visual forest management. In addition, it also offers a good reference for the visualization of other species.

Abstract: Cellulose micro/nano fibrils generated from biomass are relative new reinforcing materials for polymer composites, which have potential lightweight and high strength and are renewable. In the present study, the preparation method of extracting cellulose micro/nano fibrils from wood was introduced. After successful disintegration, the morphological characteristics of the wood fibers, purified cellulose fibers, cellulose fibers activated by ultrasonic-wave and cellulose micro/nano fibrils after homogenization treatment, were compared by visual examination and scanning electron microscopy. The results showed that cellulose micro/nano fibrils have been efficiently extracted from wood, which have great potential in the application areas of papermaking, bio-nanocomposites, food, cosmetics/skin cream, medical/pharmaceutical, and so on.