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The purpose of this study is to investigate the effect of iron content on the friction and wear performances of Cu–Fe-based friction materials under dry sliding friction and wear test condition.

Cu–Fe-based friction materials with different iron content were prepared by powder metallurgy route. The tribological properties of Cu–Fe-based friction materials against GCr15 steel balls were studied at different applied loads and sliding speeds. Meanwhile, microstructure and phases of Cu–Fe-based friction materials were investigated.

Cu–Fe-based friction materials with different iron content are suitable for specific applied load and sliding speed, respectively. Low iron content Cu–Fe-based friction material is suitable for a high load 60 N and low sliding speed 70 mm/min and high iron content Cu–Fe-based friction material will be more suitable for a high load 60 N and high sliding speed 150 mm/min. The abrasive wear is the main wear mechanism for two kinds of Cu–Fe-based friction materials.

The friction and wear properties of Cu–Fe-based friction materials with different iron content were determined at different applied loads and sliding speeds, providing a direction and theoretical basis for the future development of Cu–Fe-based friction materials.

The purpose of this paper is to synthesize a polyacrylate-based dispersant with a determined target molecular weight for oily systems and to determine the optimal dispersant level and monomer ratio of the dispersant.

The dispersant was synthesized by conventional radical polymerization using methacrylic acid, butyl acrylate and dimethylamino ethyl methacrylate as the monomer. It was characterized by Fourier transform infrared spectroscopy, nuclear magnetic hydrogen spectroscopy, gel permeation chromatography and thermogravimetric analysis. The dispersant was used to disperse TiO₂, and the performance of the dispersant was evaluated by measuring the viscosity, particle size and dispersive force of the slurry.

The dispersant exhibited high thermal stability and was successfully anchored to the surface of the TiO₂ pigment. When used to disperse a TiO₂ slurry, it effectively made the TiO₂ slurry more fluid, indicating its strong viscosity-reducing properties. The viscosity, particle sizes and dispersion capabilities of the TiO₂ slurry were found to vary depending on the contents and monomer ratios of the dispersant.

P(MAA-BA-DM) dispersant increases the wettability of TiO₂ only in oily solvents but not in aqueous solvents.

P(MAA-BA-DM) dispersant makes it easier to disperse TiO₂ pigments in oily solvents, increasing the amount of pigment in the solvent and making the preparation of highly pigmented pastes easier.

A dispersant containing suitable carboxyl and tertiary amine groups was initially synthesized to disperse TiO₂ in an oily system. The findings are anticipated to be used in the formulation of pigment concentrates, industrial coatings and other solvent-based coatings.

The purpose of this paper is to apply the theory of perceptual image to clothing, study the effect of bra components on the perceptual image of Chinese female consumers aged 18 to 27, explore the relationship between them, promote the computer-aided bra design to be more rapid and accurate and meet consumer's needs better.

In this paper, cognitive psychology and mathematical analysis methods were used, and two experiments were conducted. A reaction time experiment was conducted based on 3D virtual bra samples, proving that bra components have an effect on the consumer's perceptual image and obtaining a revised bra component design indicator system by multi-dimensional Scaling (MDS). A projection experiment was conducted to study what kind of relationship exists between the two, and a prediction model was constructed by the quantitative I-class theory.

It is found that bra components have an effect on perceptual image of Chinese female consumers aged 18 to 27. A total of five important components (cup area, center front height, torso width, side wing width and center back shape) that affect the consumer's perceptual image were identified by MDS and references analysis, and then a bra perceptual image space composed of five pairs of words was constructed by subjective evaluation and cluster analysis. What is more, a prediction model was obtained by the quantitative I-class theory; after testing, the model can visually and effectively predict consumer's perceptual image according to bra components indicators, which provide a convenience for the positive design of bras.

In this article, the authors just studied bra components, but did not take fabric, color and other factors that also affect the perceptual image into consideration. Further research can use this method to study other important influential factors as well as their comprehensive impact. Also, the subjects are Chinese young women; consumers of other age or from other countries are not involved, and more extensive research can be done in the future.

The bra component indicator system can help to build a more systematic and clearer bra design library, which provides convenience for designers to search and use them quickly, improving the efficiency of bra design. The prediction model is also helpful to bra designers and companies. When they already design a bra, they can use this model to predict consumer's perceptual image, thus carry out more accurate market positioning and promotion. When they want to satisfy consumers or design a specific effect, they can also refer to this model to reverse design of components. In general, the outcomes of this paper can help companies to quickly establish a computer-aided bra design system, which is conducive to designers to accurately design and better meet market's needs, and the method is also a good attempt to apply the theory of perceptual image in psychology to clothing and can be extended to other relevant fields in the future.

Based on cognitive psychology, this paper attempts to apply the theory of perceptual image in psychology into clothing and takes bra as an example to study the relationship between bra components and consumer's perceptual image. The prediction model constructed here is conducive to the development of bra design and to meet personalized needs of consumers. This method can also be extended to other fields in the future.

It is a very prominent problem that Chinese universities lack school-running characteristics. In the past ten years, because of undergraduate teaching assessment requirements of the Ministry of Education, universities attach great importance to school-running characteristics. What is the reality and how to improve the effectiveness of creating the school-running characteristics of universities? It is a problem that needs to be solved. The purpose of this paper is to discuss these issues.

Using the survey method, literature study, case studies and other methods, this study reviewed ten years of school-running characteristics construction and explored some laws of creating school-running characteristics.

This study found although universities in China are beginning to attach great importance to the school-running characteristics, but they are still staying in the summarization of characteristics. School-running characteristics are very rough. Creating school-running characteristics are mainly efforts responding to the superior government. Creating school-running characteristics should be based on category characteristic. Universities need to change in competition and create characteristics within its history and culture. Universities need to refine the core idea of education, develop a big picture and then renew them in the assessment cycle.

The originality of this study was that it put forward some new laws including changing from summarizing to creating its own school-running characteristics, putting category characteristic as the prerequisite and considering the core idea of education as the focus of school-running characteristics. This research will enrich the theory building of higher education research and has some value in promoting the creation of school-running characteristics.

The purpose of this study is to improve the mechanical properties of PBAT. Polybutylene adipate terephthalate (PBAT) has excellent biodegradability, which has been widely used in various fields, such as biomedical supplies, plastic packaging materials, industrial composting and daily sanitary consumables. However, the application of PBAT is limited by its high production costs and poor mechanical property. In this study, the glass fiber (GF)/PBAT composites were prepared, and the effect of GF and the modifiers on the structure, mechanical properties and shape memory properties of the composites were investigated.

In this work, GF, 3-aminopropyltriethoxysilane (KH550) and chain extender ADR 4370 were selected as reinforcement, GF and chain extender, respectively. The GF/PBAT, KH550-modified GF/PBAT and ADR-modified GF/PBAT composites were prepared by melt blending, extrusion granulation and hot pressing.

The study showed that the fracture strength and elongation at break of PBAT decreased with the increasing of GF, and the decline is controlled after addition of KH550 and ADR 3470. When the GF content was low (such as 5 wt% and 10 wt%), KH550 significantly improved the mechanical properties of the composites. When the GF content was high (such as 20 wt% and 25 wt%), the mechanical properties of the composites were obviously improved by addition of ADR 3470. In addition, the shape memory fixity ratios (R_f) and shape memory recovery ratios (R_r) of the composites increased and decreased with increase of GF content, the prestrain and tensile temperature, respectively. Furthermore, the Rf of the KH550 modified GF/PBAT composites were the lowest, the Rr were the highest than that of the ADR modified GF/PBAT composites and the untreated GF/PBAT composites.

GF/PBAT composites exhibited good mechanical properties and low production costs. The research can help promote the widespread use of PBAT and alleviate the situation of serious plastic pollution.

A novel biodegradable GF/PBAT composite was developed by chain extender ADR 4370, incorporating environmentally friendly GF with excellent mechanical properties into PBAT.

Research investigating female entrepreneurs and their networking relationships has developed considerably over the past two decades. There are, however, few Sri Lankan studies that have specifically focussed on female entrepreneurs in terms of their social networks. This paper aims to examine the important influences on these female entrepreneurs’ networking behaviour within small businesses in the tourism sector.

Having established that the social constructionist approach is most suitable for this study, in-depth narrative interviews and observations were deemed a particularly suitable research tool. In total, 14 female entrepreneurs were purposively approached and interviewed. Narrative analysis was used to analyze and interpret qualitative data, which were organized with the assistance of QSR NVivo 10, a software programme.

Competing family responsibilities and business matters (being a good mum and dutiful wife), culture and societal expectations, running home-based business and building trust were found as main influences on female entrepreneurial networking behaviours. The majority revealed stressful times trying to combine the business with multiple roles and societal expectations.

Applications of the model in female entrepreneurial networking behaviour are suggested, within and beyond the context of the small business tourism industry in Sri Lanka.

This study enriches the understanding of social networks and social capital based on the experience of Sri Lankan female entrepreneurs, which is influenced by contextual factors of identity, gender and culture.