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The cell wall mechanical properties are an important indicator for evaluating the overall mechanical properties of natural bamboo fibers. Using the nanoindentation technique, the variation of the mechanical properties of the fiber cell wall of Bambusa pervariabilis culms with different ages and different positions (both radial and longitudinal) was studied. Moreover, x-ray diffraction (XRD) was employed to measure the microfibril angle (MFA), and the correlation between the MFA and the mechanical properties of the fiber cell wall. The results showed that there was a remarkable difference in the fiber cell wall mechanical properties at different ages and at different radial and longitudinal positions. However, at different ages and at different positions, the absolute value of variation of MFA was less than 1° and was very minor. Furthermore, there was no significant correlation between the fiber cell wall mechanics and MFA, indicating that the mechanical property of the fiber cell walls might be synergistically affected by many factors.

The physical-mechanical properties of bamboo-polyethylene composites (BPCs) change depending on the environmental temperature and exposure to moisture during outdoor use. In this study, the water absorption, density, mechanical properties, and wear rate of the composites were tested after immersion in water, and four water temperatures were examined. Bamboo charcoal (BC) was used to improve the properties of the BPCs after hydrothermal aging. The composites were improved because of the strong interfacial interactions between the BC and polymers. The experimental results showed that the water diffusion rate accelerated as the water temperature increased. The BC reduced the water absorption at all of the water temperatures and the diffusion coefficient at temperatures above 39 °C. The wear rate of the composites first increased, and then decreased as the water temperature increased. The density and flexural properties decreased with an increased hydrothermal aging temperature. Overall, hydrothermal aging decreased the water resistance and mechanical properties. Additionally, these effects were enhanced as the water temperature increased, but were countered by the incorporation of the BC.

The use of bamboo charcoal (BC) was investigated as a filler in bamboo-plastic composites (BPCs) to achieve improved water resistance, physical-mechanical properties, and reduced hydrophilicity. The influence of the BC content and size on the water absorption, contact angle, density, and mechanical properties of bamboo flour/low-density polyethylene (LDPE) composites was tested. Scanning electron microscopy was used to analyse fractured and flat composite surfaces. The results indicated that the BC increased water resistance, achieving optimal results at 8% content. The BC particles that ranged in size from 60 to 100 mesh were more water-resistant than other sized BC. The water contact angle increased with an increase in the BC content or a decrease in the particle size. These results indicated that BC reduced the composite hydrophilicity and that the smaller BC particles improved this effect. The BC strongly connected with the LDPE composites, and the BC contents below 12% improved the flexural properties and increased the density of the BPCs. Also, the impact strength of the BPCs decreased dramatically with a decrease in the BC particle size. These results demonstrated that the integration of BC with BPCs resulted in strengthened water resistance and physical-mechanical properties and reduced hydrophilicity.

The man-hour costing is the largest cost in the chemical plant design companies because the design processes are undertaken by the staff. The accurate man-hour forecasting can facilitate the design process control and the human resources scheduling optimization so as to cut the costs. This paper presents a framework, combining the Back Propagation (BP) Artificial Neural Network (ANN) and Genetic Algorithm (GA), for the forecasting of Construct Drawing Design Man-hour (CDDM), which is the largest man hour among all work items in the chemical equipment design process. Firstly, the input variables are selected based on the contribution and correlation analysis after describing the optional input variables. Secondly, the forecasting model is presented in details. The experiments are done for the parameters set in the model, such as the hidden neuron number and the training method in the BP ANN, and the GA parameters selection. Thirdly, the simulation results are discussed. The absolute error, the relative error, and the grey relative relational grade are employed to measure the model accuracy and to compare the forecasting accuracy between the GA-BP ANN and pure BP ANN. Finally, the forecasting experiments are also tried to investigate if the variables coming from the earlier design phase can be selected as the input variables. The simulation results show the forecasting model based on GA-BP ANN can be a helpful tool for the CDDM forecasting in chemical equipment design process. The results also show the input variable selection and the experiments for the input variables coming from the earlier design phase are suitable for the CDDM forecasting.

Bedroom furniture is closely related to our daily life rest, which is designed to meet the people in their daily living life in practical, aesthetic, joy and other needs, but also by the rapid development of modern economy, culture and lifestyle of the new information society. In this paper, the bedroom in the home environment lifestyle research foundation, pointed out that matters bedroom furniture design should pay attention, and describes future innovation bedroom furniture design trends. The Design Innovation of Bedroom Furniture With the development of society, people's material and cultural living standards improve, and people requirements are also rising on bedroom home environment. Design the suitable bedroom furniture with a comfortable environment, help people learn, work, live and rest. Under the new economic era of innovative design background bedroom furniture, we must first take into account the needs of users, and design a different demand patterns with reference to different people live. For example: a double bedroom primarily for couples living room, double bed two bedside tables general configuration. However, it is worth noting that at the same time taking into account the specificity, but also the general requirements, such as: a set of bedroom furniture typically includes multi-door wardrobe, dresser and dressing stool and so on. Bedroom home environment for the overall atmosphere of the innovative design, it should take into account all aspects of the factors. Modern bedroom living already the product TV cabinets, computer tables and other modern life moved in, bringing the technological development of the emergence of these new types of furniture, but also brought unprecedented challenges bedroom furniture innovative design. "Ancient Methods and Modern, of the old for the new," emphasizes the innovative design of Chinese bedroom furniture, face pressure this innovative claim, furniture designers often lack inspiration. In fact, all the experience, ideas, understanding and perception of life always comes from practice. Faced with new challenges, designers should calmly analyze discrimination, deep into life, appreciate life, subtle changes in lifestyle, the rapid capture of information and inspiration, in accordance with modern furnishings living space, life needs to bedroom furniture inadequate modified adjusted trend of the times, to make it more perfect (1).