应用力学

Objective To investigate the biomechanical behavior of injectable recombinant human bone morphogenetic protein-2 (rhBMP-2)/calcium phosphate cement used in vertebroplasty in primate models. Methods Two fresh cadavers of adult rhesus were used as group Ⅰ, and 4 adult rhesuses were divided into groups Ⅱ and Ⅲ.

复合重组人骨形态发生蛋白-2的可注射磷酸钙骨水泥在椎体成形术中的目的探讨自主研发的复合重组人骨形态发生蛋白－2(rhBMP-2)的可注射磷酸钙骨水泥应用于猕猴椎体成形术早期和后期生物力学性能。

When used in thermoplastic and thermosetting resin such as phenol aldehyde, polyester, epoxy, PBT, polyamide, carbonate, it can greatly improve dry and wet bending strength, compression strength, shear strength and other physical mechanical properties and wet electric properties, also improve the wetting property and dispersion of stuffing into polymer.

应用于矿物填充的酚醛、聚酯、环氧、PBT、聚酰胺、碳酸酯等热塑性和热固性树脂，能大幅度提高增强塑料的干湿态抗弯强度、抗压强度、剪切强度等物理力学性能和湿态电气性能，并改善填料在聚合物中的润湿性和分散性。

The purline design of the roof and the type of joint connections in the Guangdong Sciences Center were introduced and analyzed.

对广东科学中心屋面维护结构檩条设计及节点连接形式进行了介绍和分析，并探讨了在维护结构和主体结构节点连接中使用承压型高强螺栓连接的工作机理、力学性能，为工程设计中应用提供有益的参考。

Firstly, the mechanical analysis on the stability of deep-concave open pit slope based on the theory of elasticity has been presented, thus offering the probable cause theoretically for using the convex-form slope in the deep-concave open pit on one hand and the preliminary method to determine the rational shape of slope on the other hand.

首先，基于弹性理论对深凹露天矿边坡的稳定性做了力学分析，从而为凸形边坡在深凹露天矿的应用提供了理论依据，同时为确定合理的边坡形状提供了初步方法。

Aromatic polyamides are a class of high-performance polymers and they are widely used in various fields due to their high thermal stability and good mechanical properties.

聚芳酰胺是一类重要的特种工程塑料，具有优异的耐高温性能、力学性能和绝缘性能，广泛应用在航天、电子、现代通讯等尖端领域。

METHODS: The blood supply of fibular musculocutaneous flap and the biomechanical characteristics of heel were studied by anatomical examination. One case with right heel full defect because of explosion injury was repaired by transfer of reversed island fibular vessels. The fibular flap was 14 cm in length with part of peroneus muscle and long flexor muscle of great toe. RESULTS: The lower part of fibular artery had plentiful anastomosis with anterior tibial artery and posterior tibial artery, which could provide ideal reversed blood supply.

应用解剖学的方法研究腓骨肌皮瓣血供及跟骨的生物力学特征，并在标本上进行摹拟手术。1998年5月为1例右足跟爆炸伤后2个月，全足跟缺损患者采用腓血管蒂逆行岛状腓骨肌皮瓣移位修复，腓骨瓣长14cm，带部分腓骨肌及口止母长屈肌，皮瓣为14cm×12 cm。

Results A satisfactory three-dimen- sional finite element FE model of the first mandibular premolar with pulp cavity was constructed which including 101564 elements and 144053 nodes.

作为一种理论应力分析方法，有限元分析方法常用于工程力学研究，直到1973年由Farall川等首先应用于牙列修复的优化设计中。

Therefore, this algorithm is applied to inverse analysis of mechanical parameters in Pump and Brake Program .It is shown that this algorithm can be used for back analysis of mechanical parameters in engineering.

基于该算法进行了泵闸工程力学参数的反演分析，结果表明免疫遗传算法结合了遗传算法和免疫算法的优点，可以在工程中广泛应用。

Based on the analysis of formation process of enami wood flour,and the geometry of cell wall thickness will be quantitative calculate by mathematical parameter of changes in cell of enami wood fiber under the low-power formation process.

在不同位置的细胞体形成的纳米木纤维，其物理力学性能是不一样的，亚纳米木粉(木材粉碎到1 000~20 000nm之间)为典型的天然多孔材料，将广泛地应用于建筑、家具、复合材、胶粘剂、填料等方面[2]。

On the base of comparatively analysis about various design method to piles cap, a new compound material——steel fiber reinforced concrete is first applied in piles cap. The modeling experiments on 9 three-pile caps and 15 four-pile caps specimen are carried on, the mechanic characteristic of piles cap and obvious effect of adding steel fibers into concrete are analyzed in detail, which provide reliable experimental basis for establishing the loadtransferring model of piles cap.

在分析比较各种有关承台设计计算方法的理论体系后，首次将钢纤维混凝土这种新型复合材料应用于桩基承台进行理论研究，并基于9个三桩承台和15个四桩承台的模型试验，详细分析了承台的力学性能，以及钢纤维的掺入对提高构件承载能力，延缓裂缝开展，有效降低承台厚度等方面的显著影响，为桩基承台传力模型的建立提供可靠的试验依据。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐