摘要：Introduction Mandibular segmental defects result in significant cosmetic and functional ***,the reconstruction of both the contour and function of the mandible is a challenging *** present,autologous vascularized fibula transplantation is the most common method to reconstruct a mandible with long-span defects[1].

摘要：为了研究TBM在深部岩体开挖过程中多种因素对盘形滚刀破岩效率的影响,考虑了不同围压、贯入度、刀间距和公转速度因素的影响,采用有限元法建立盘形滚刀回转切割破岩模型并进行数值模拟,研究不同影响因素组合下的破岩效果、岩石破碎体积和破岩比能耗。为了得出影响破岩效率的最敏感因素,构建了4因素4水平的正交试验。研究结果表明:在深部岩体破岩过程中,影响因素对盘形滚刀破岩比能耗敏感度的顺序依次为刀间距、公转速度、贯入度和围压,即刀间距是影响盘形滚刀破岩效率的主要因素。通过数值模拟对比分析验证正交试验结果,得出不同影响因素下的破岩规律和破岩效率,进而验证了不同影响因素对破岩效率的敏感度。

摘要：In deep underground mining, the surrounding rocks are very soft with high stress. Their deformation and destruction are serious, and frequent failures occur on the bolt support. The failure mechanism of bolt support is proposed to solve these problems. A calculation theory is established on the bond strength of the interface between the anchoring agent and surrounding rocks. An analysis is made on the influence law of different mechanical parameters of surrounding rocks on the interfacial bond strength. Based on the research, a new high-strength bolt-grouting technology is developed and applied on site. Besides, some helpful engineering suggestions and measures are proposed. The research shows that the serious deformation and failure, and the lower bond strength are the major factors causing frequent failures of bolt support. So, the bolt could not give full play to its supporting potential. It is also shown that as the integrity, strength, interface dilatancy and stress of surrounding rocks are improved, the bond strength will increase. So, the anchoring force on surrounding rocks can be effectively improved by employing an anchoring agent with high sand content, mechanical anchoring means, or grouting reinforcement. The new technology has advantages in a high strength, imposing pre-tightening force, and giving full play to the bolt supporting potential. Hence, it can improve the control effect on surrounding rocks. All these could be helpful references for the design of bolt support in deep underground mines.

摘要：The numbers of environmental courts and tribunals have been increasing tremendously in the twenty-first century in various countries. Facing with the challenges of environmental disputes explosion, China has to keep up with the trend. A system of environmental courts from institution to procedure rules has been established according to the Swedish Environmental Code of 1999. In contrast, the environmental courts in China are far from perfect, and the reforms of the environmental courts lack unified legal grounds, specific structural design, and clear procedure rules. An analysis concerning the origin and development, standing, the composition of judges, the litigation costs of the Sweden environmental courts will be revealing and beneficial for the bettering of the Chinese environmental courts system.

摘要：Domestic solar hot water system, the use of the status quo and existing problems, by analyzing the solar water heating equipment and building integrated and building integrated design.

摘要：针对地板生产设备大多数处于半自动化状态,且存在着加工精度和加工效率不高等缺陷,提出了强化地板数控横向开榫机主机结构的设计。通过对横向开榫机加工工艺分析,利用三维软件solirlworks对强化地板数控横向开榫机主机结构进行实体建模,确定了强化地板数控横向开榫机主机总体结构,并对齐边锯、粗铣的切削力和切削功率进行设计计算,完成了强化地板数控横向开榫机粗铣主轴件、齐边锯组件、精铣主轴件、抛光主轴组件、主机机架等结构的设计研究。设计的强化地板数控横向开榫机主轴结构简单,具有强度高、加工效率高、稳定性较好、制造成本低的优点。

摘要：为发展间伐材木丝、木屑加工技术,满足木丝、木屑的干燥需要,根据干燥物料的特性,采用新型的干燥原理设计了一种电加热式的滚筒式干燥机。根据滚筒干燥机的工作特点,经过分析设计出滚筒的结构、环形保持架的结构、发热管支座的结构、进料斗和出料斗的结构。分析干燥过程中物料在滚筒中的运动过程,就该滚筒干燥机的工作过程中干燥的物料特性,进行运动学分析,通过理论计算得出干燥机滚筒转动的最小速度应该大于33.78 r/min,最大速度应该小于54.8 r/min,为干燥机的测试提供了理论依据。

摘要：通过对曲线地板纵向开榫加工工艺的分析,提出了一种可以曲线进给的曲线地板纵向开榫加工的主轴机构。根据对加工工艺的分析结果对曲线地板纵向开榫机、主轴机构、纵向导轨支架总成进行总体布局和结构设计。为确保设计的可靠性对主轴机构的单元切削力、切削功率等主要参数进行设计计算,也对纵向导轨支架总成的重要部件长导轨架进行有限元分析,得出相应的结论,以此来验证该设计是否符合实际需求。提出的主轴结构可以解决曲线地板开榫加工时的重复定位的问题,加工工艺也得到了很大的改善,同时曲线地板开榫加工的效率和精度有很大的提高,该项研究为曲线地板纵向开榫加工提供了一种新型机构。