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Changes in rheological properties and structure of shark fins (gel strength, maximum breakage strain, shearing strength and fracture stress) were studied on shark fins heated for various periods (1h, 2h, 3h, and 4h) by a texture meter.

研究了鱼翅在不同加热时间(1、2、3、4h)条件下组织构造及其物性学参数（凝胶强度、最大破断应变、剪切应力、破断强度）变化，并测定了胶原蛋白含量。

It is embodied concretely:(1) With the adoption of grouting bolts, the cranny in wall rocks can be blocked up, the air can be isolated, the wall rocks can be prevented to be weatherized and make water, the strength of wall rocks can also be avoided to be lowered;(2) The lax broken wall rocks are commentated to a whole by liquid after they were grouted and the rock"s strength is increased, so the wall rocks become a part of the support structure by using itself and become a whole with the original rock, and the roadway is made to keep stable but not easy to be broken;(3) The spray layer wall are filled with liquid after grouting, the stress is avoided to be concentrated because the load could be evenly acted on the spray layer and the support;(4) The pressure acted on the plank can be delivered to the two sidepieces and then to the bottom by reinforcing the sidepiece; At the same time, the concentration degree of loads acted on the motherboard can be weaken because of the enlargement of the combination arch"s thickness, as result, the rock"s stress is lowered and the heaving is alleviated;(5) The common bolt is made to be fixed the whole length after grouting, the layers are connected to a integral whole and bear the weight of loads, so the support structure"s unity is increased.

具体体现在：(1)采用注浆锚杆注浆，可以利用浆液封堵围岩裂隙，隔绝空气，防止围岩风化，且能防止淋水和渗水，避免围岩被水浸湿而降低围岩的本身强度及造成的巷道变形。(2)注浆后浆液将松散破碎的围岩胶结成整体，提高了岩体强度，实现利用围岩本身作为支护结构的一部分，且与原岩形成一个整体，使巷道保持稳定而不易产生破坏；(3)注浆后使得喷层壁后充填密实，保证荷载能均匀地作用在喷层和支护上，避免出现应力集中点而首先破坏；(4)注浆后使作用在顶板上的压力能有效地传递到两帮，通过对帮的加固，又能把荷载传递到底板；同时由于组合拱厚度的加大，这样又能减小作用在底板上的荷载集中度，从而减小底板岩石中的应力，减轻底臌；(5)注浆加固后能使普通端锚锚杆实现全长锚固，它们共同将多层组合拱连成一体，共同承载，提高了支护结构的整体性。

This paper studies the change pattern of soil strength in the different water content as an example of silty clay soil in Beijing area. The results have shown that the changes of water content in the scope of 10-20% have greatly influences on soil strength.

结果表明：随着含水量的增大，土的强度降低，但降低的幅度不一样，当土的含水量在10～20％之间变化时，含水量的变化对土的强度影响极为明显。

Under the condition of axial compression, simple bending and compression-bending, the effects of parameters to CFTs mechanical performance are studied. The parameters taken in account are concrete compression strength, steel ratio, steel strength.

在轴压、纯弯和压弯情况下分析钢管混凝土柱力学性能受混凝土强度、含钢率和钢材屈服强度等参数的影响规律及其破坏机理。

With the FEA software ANSYS and shell element which has high-precision, this dissertation optimize the size and thickness of skeleton section and seek steel pipe which still have strength and stiffness surplus under static state working condition: sinkage of 240mm of rear wheel. Its fully loaded in the state of static bending and torsion. After that, amelioration is achieved for even strength design.

本课题运用ANSYS有限元分析软件，并且使用精度较高的SHELL壳单元作为建模单元，在静态条件下，通过对左右后轮下沉240mm的弯扭联合工况的模拟分析，寻找出骨架中存在强度和刚度富裕的构件，使之达到轻量化改进的目的。

In view of the above factors, to a certain extent, affected the greenhouses of the application and promotion, plus the current bamboo, wood steel prices rising, the vast rural areas in urgent need of a low-cost, corrosion-resistant, resistant to moisture, anti-aging a new framework to shed Instead of the traditional bamboo, wood, steel materials, in the light of this, I units commissioned by the relevant departments, research institutions and the parties concerned under the guidance of experts, completed a "no-pillar greenhouses skeleton of" key project, supported by aircraft I developed a special formula units, the production of greenhouse skeleton without pillars of quality and cheap, quality higher than that of a steel frame, lower than the cost of bamboo, wood, the technical supervision departments test, the main performance indicators are as follows: the simulation of the actual scope: 5.8 - 6.8KN bending strength ≥ 3.3 KN compressive strength ≥ 20 KN water absorption ≤ 13

鉴于上述因素，在一定程度上影响了塑料大棚的应用与推广，又加之目前竹、木钢材价格不断上涨，现广大农村急需一种价格低廉、抗腐蚀、耐潮湿、抗老化的新型大棚骨架来代替传统的竹、木、钢材料，鉴于此，我单位受有关部门委托，在各方科研机构及有关专家的指导下，完成了《无支柱塑料大棚骨架机》的攻关项目，该机配以我单位研制的特殊配方、工艺生产的无支柱大棚骨架质优价廉，质量高于钢架，成本低于竹、木，经技术监督部门测试，主要性能指标如下：模拟实际受力范围：5.8-6.8KN 抗折强度≥3.3KN 抗压强度≥20KN 吸水率≤13

Test results show that with an SBR loading of 15%,CNTs loading of 2%,and sodium benzoate loading of 2%,the impact strength is improved by 120%,tensile strength is improved by 6%,elongation at...

结果表明：当SBR、CNTs和苯甲酸钠用量分别为15%、2%和2%时，改性后PP的冲击韧性提高了120%，拉伸强度提高了6%，扯断伸长率提高了55%，弯曲强度提高了20%。

Results obtained show that the range of quasi-solid is equivalent to the range of hot brittleness, and B, Ti as well as mischmetal all lower the quasi-solidus and enhance the strength around solidus and the increase rate of strength of the alloy.

研究结果表明，合金的准固态区即热脆性区，B，Ti和稀土都能降低合金准团相线温度，提高强度增长率和准固相线附近的强度，稀土的作用强于B和Ti。

The strength of SiCp/Al composites hot-pressed above and extruded below, or hot-pressed below and extruded above the solidus temperature of the matrix is higher than that of composites hot-pressed and extruded above or below the abovementioned temperature, and the strength of SiCp/Al composites hot-pressed above and extruded below the solidus temperature of the matrix is the highest.

以基体合金的固相线温度为基准，高温热压、低温挤压或者低温热压、高温挤压的复合材料的强度优于高温热压挤压或者低温热压挤压的复合材料，并且高温热压、低温挤压的复合材料的力学性能最优。

The numerical simulation of two-phase flow field in the reactor is carried out in this paper. The distribution of shearing strength in the channel is systematically obtained:① The shearrates of wall, vortexcore, vorticity and non-vorticity regions are descending sort.② With Re number increasing, the average of shearing strength becomes linearly increasing tendency in the back step expand channel.

通过对涡旋波膜生物反应器中的两相流流场进行数值模拟，系统地研究了反应器内的剪应力的分布规律：①壁面、涡心、旋涡生成处及非旋涡生成区的剪切应变依次降低；②随着Re数的增大，扩张区内剪应力的平均值呈线性增加趋势。

The Master of Science degree program in Economics features a curriculum that is flexibl...

在经济学理学硕士学位的课程计划的特点是灵活而全面的方法，在理论和应用课程培训工作。

This module is used for constructing and visualizing 3D models.

该模块是用于建设和可视化的三维模型。