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Background Erdheim-Chester disease (ECD) is a rare multi-system or multi-organ histiocytic proliferative disease with diverse clinical manifestations, and the development of the disease is complex, which makes clinical diagnosis and treatment difficult. The characteristic clinical manifestations include multi-organ involvement, especially in the symmetrical diaphysis and metaphysis of the bilateral extremities. ECD with a unilateral talus lesion is extremely rare. Here, we report an unusual case of ECD invading the asymmetric talus and tibia without involving other organs. The patient had good outcome after surgery. Case summary We report a case of a 67-year-old man who was referred to our outpatient department because of left ankle chronic pain for 5 years, which exacerbated after a foot sprain 6 mo previously. We discovered multiple sclerotic lesions of the tibia and talus on his previous X-ray films, which were initially missed in a local hospital. Therefore, enhanced computer computed tomography (CT) and magnetic resonance imaging were performed. These examinations showed multiple lesions in the bone marrow cavity of the left tibia, and cortical sclerosis and osteonecrosis of the left talus. Specimens were collected via bone puncture from the two lesions, and a final diagnosis of ECD was confirmed by pathological and immunohistochemical examinations. In addition, other auxiliary examinations including head CT, pulmonary CT, spinal CT, abdominal CT, cardiac ultrasound and thyroid ultrasound showed no obvious abnormalities. The patient underwent surgery for the tibia lesion scraping and talus lesion scraping combined with cement casting. The patient started on a progressive rehabilitation at 4 wk, and felt no pain after surgery. During a 2-year follow-up period, the patient exercised normally without pain, and there were no signs of recurrence. Conclusion This study shows that surgery treatment may also achieve good results for ECD patients with only bone involvement.

The article selected coal listed company related data in 2000-2016, by constructing a VAR model, and studied the excess production capacity, import and the dynamic relationship between and among co...

Energy-consumption during a produce, especially an energy-used product, performances its function in its using phrase, can arise sets of environmental problem [1], which is the key problem faced by an energy-used product design engineer during a sustainable design process. This paper proposes an essential energy flow analysis methodology. Based on the product components structures units, this methodology built up the relationships between the component energy properties and its functional properties, in order to identify and describe the main energy-related parameter as well as a functional design process. A case of juicer design process illustrates that energy footprint mapping analysis methodology is of great energy-saving efficient during the early phrases of a product design process.

Conventional mechanical vibration platform vibrates not only in the direction of back and forth but also in the direction of up and down. Vibrations in both directions are achieved by two mechanisms, respectively. Three-dimensional vibration cannot be realized. In this paper, the servo motor, the gear drive mechanism, and the parallel four-bar linkage mechanism are combined with the NC system. And a type of program-controlled three-dimensional vibration platform is designed. The platform can vibrate in three directions, such as the directions of up and down, left and right, back and forth. The parametric adjustment of amplitude and frequency in three directions can be realized. The vibration platform is suitable for high-speed and light-load three-dimensional vibration. Compared with the existing mechanical vibration platform, the designed vibration platform overcomes some deficiencies to realize three-dimensional vibration with variable frequency and amplitude.

The requirements of CNC machine tools for the feed servo system could generally be summarized as high precision, well stability, fast response, wide range of speed regulation, high torque at low speed and so on. The PID controller of feed servo-system based on intelligent fuzzy control was presented based on traditional PID controller. The main feature of this arithmetic was to change parameters in different degrees according to time-varying working conditions, specially this arithmetic could change its domain intelligently according to different conditions and cooperated with a stable controller in case of system crash so that adaptivity and reliability of the feed servo-system were improved, also this feature made application field of the feed servo-system wider.

In view of the current welding industry, there is no automated programming tool for the welding path of square battery cover. According to differential geometry theory, the principle of nonlinear error is analyzed. Then a simplified model for nonlinear error is established. Based on these, an efficient algorithm based on nonlinear error is proposed. According to the proposed algorithm, two instantiation of the algorithm are presented. Therefore, the proposed algorithm is simple, reliable, and efficient. It adapts to the requirement of two mainstream spuare battery covers perfectly.

Product’s performance should be sustainable the environment, which is accepted and be accomplished by more and more companies and people. While some of these methods used well in some special fields may damage the environment in the other period of product related lifecycle phrase. This paper propose an integrated solving environmental analysis methodology based on the unified energy footprint graphic model, which can systematic describe all the produce activities impacted with the external environment by tracing the energy footprint in the uniformed energy flow maps. This frame system can also be divided into three ranks, which can be used clearly to deal with the energy-related environmental problem from the product component structure design to the manufactory processes optimization even to the product families’ research and industrial distribution as a whole.

This paper introduces an optimization algorithm for rapid prototyping. In the optimization algorithm, several important influencing factors are considered, such as the molding direction, the extrusion speed, and layer thickness, etc. And the velocity and effectiveness of the method are validated experimentally. The algorithm can get the best molding direction and maximum hierarchical layer thickness. The method is comprehensive, overcoming the problems of current optimization methods for one-side shortcomings, and can make guidance for the adaptive slicing and path planning.

This paper offers insights into the research of operations management in service–manufacturing––a new “industry” with a close marriage between service and manufacturing. The concept of service–manufacturing has been iterated; the value creation and aggregation model in service–manufacturing has been demonstrated; the theoretical framework and the research agenda of operations management in service–manufacturing have been illustrated.

Organizational communication is of key importance for the smooth running of business operations. Efficient and effective communication is at high demand for people in the organization to fulfill work assignments. This paper aims at introducing organizational storytelling as a powerful tool in smoothing business communication. Heuristic literature review approach has been adopted.

Sr2Fe1.5Mo0.5O6 (SFM) is a mixed ionic and electronic conductor which can be used as both anode and cathode materials in intermediate-temperature solid oxide fuel cell. By doping Sm into the Sr-site, the electrical conductivity of SFM is enhanced effectively. The single cell with a configuration of Sr1.8Sm0.2Fe1.5Mo0.5O6|La0.8Sr0.2Ga0.83Mg0.17O2.815| Ba0.5Sr0.5Co0.8Fe0.2O3 obtained maximum power densities of 459, 594, and 742 mW cm−2 with H2 as the fuel at 750, 800, and 850 °C, respectively. The results suggest that doping with Sm is a very promising way in enhancing the electrical conductivity of SFM and consequently can greatly improve its anode performance.

With the urban industrialization transforming to post-industrialization development, the negative effect brought about by the removal of old industrial buildings is the ignorance of the history of industrial development, thereby resulting in a waste of resources. With the development of computer technology, information technology and network technology, in the face of the old industrial areas losing produce production capabilities causes a lot of waste idle constructions, people can integrate information through digital means, renovate and reuse resources under complete information processing mechanism and systematically collect information. The application of intellectual and digital technology combined with each other provides a good foundation for the recycle of old industrial buildings resources, so that these representative old buildings resources can be used more widely and efficiently.

With the rapid development of computer technology, especially with the progress in computer graphics technology, a revolutionary change occurred in urban sculpture, architecture, animation and other art and design field. Three-dimensional computer technology information technology and digital technology also challenged the traditional art of sculpture which takes manual approach to create and produce sculpture works; they provide designers with a new creative fashion and art form. This interdisciplinary technology surpassed the single and limited mode of the traditional tools through turning two-dimension to three-dimension, static to dynamic situations. Large sculptures began to appear in the city with the assistance of computer technology in varying degrees. The programs accurate operating and precise drawing bring strong reliability in sculpture design, which has become the primary means of urban sculpture creation.

The effective elastic modulus of hydroxyaptite (HA) microspheres composite scaffold is determined by the HA microspheres’ elastic modulus, accumulation topology model and the porosity. Experiments showed that different accumulation pattern and porosity has different modulus for bone scaffold. Furthermore, porosity and accumulation pattern are affected directly by the adhesive thickness. Here, we elucidate the effect of the scaffold parameters on bone sitffness and porostiy by means of a mathmatically based approach. Based on ANSYS simulation platform, the effective elastic modulus of HA microspheres scaffold was demonstrated. And the effective elastic modulus of artificial bone scaffold with different adhesive thickness was calculated by using APDL. Use the void fraction to illustrate the porosity of HA microspheres scaffold, which is an important consideration when attempting to evaluate the potential volume of water and hydrocarbons it may contain. By analysis of the optimization results, the effective elastic modulus reaches the maximum when the adhesive layer thickness is 0.05 mm, while the corresponding porosity is 0.5231