延缓的

Presents the design of longitudinal control for ASTOVL lift-fan aircraft, a multi-variable, strong-coupling, complicated nonlinear system to make the system nonlinear offset and decouple, and the method used for linear system in designing the system to gain expectant flying qualities and the combination of aerodynamic control surfaces with thrust vectors to delay the control surfaces getting into saturation, and the minimum N-norm generalized inverse theorem of weighted generalized inverse adopted to apportion the moments commands, which make the control surfaces gain appropriate deflection and the simulation results to verify the dynamic inverse control laws designed really make the system nonlinear offset and decouple; when one command is given, only this output will response, and others do not response; when all commands are given together, the responses will be just the linear superpose of the response of each command, therefore the operation of the pilot will be simplified greatly.

摘 要： ASTOVL升力风扇飞机是多变量、强耦合、复杂的非线性系统，采用非线性动态逆理论设计控制律以实现系统的非线性对消及解耦，然后，采用线性系统的设计方法对系统进行设计，以使系统获得期望的飞行品质。同时，考虑到ASTOVL升力风扇飞机是由气动舵面和推力矢量融合作用的，为了延缓各舵面进入饱和的时间，采用加权广义逆中的极小N-范数广义逆定理分配力矩指令，从而使各舵面达到适当的偏转角。并将所设计的控制律进行了仿真，结果验证了所设计的动态逆控制律使系统实现了非线性对消和解耦，单个指令作用时，只有该项响应，其余不受影响；所有指令作用时，其结果就等于单个指令作用时的线性叠加，这样使驾驶员的操纵大大简化而易于控制，从而大大降低了飞行事故率。

Moreover,in this dissertation,a method ispresented to control safe basin with the fractal erosion,that is by the application ofthe weak parameter periodic perturbation with an optimal frequency to control thefractal erosion basin,and the analytical study shows that the essence of the methodis that the parameter periodic perturbation can be used to delay the occurrence ofhomoclinic tangencies.

并且在本文提出了一种对分形侵蚀安全域进行控制的方法，那就是应用具有最优频率的参数周期扰动对于已受到分形侵蚀的安全域加以控制，在理论分析中得到这种控制分形侵蚀安全域的方法实质上延缓了鞍点同宿相切的发生，同时考虑了外加噪声对控制后安全域的影响，得到这种控制方法具有很好的鲁棒性。

In Fuji apple, Starking apple and Feicheng peach, 1-MCP slowed the conversion of TA content and SSC, maintained the ratio of sugar to acid and reduced the flavors loss in later storage time. 1-MCP also reduced the chilling rate and fruit weight loss of Feicheng peach stored at 0℃, but accelerated the decay of Feicheng peach and the detachment of grape berry from peduncle stored at 20℃. The effect of 1-MCP on the decay of strawberry was related to temperature: alleviated at 20℃ and enhanced at 0℃.

在富士、红星和肥城桃果实中，1-MCP处理都延缓了果实可滴定酸和可溶性固形物含量的转化，维持了果实贮藏后期糖酸比，抑制了果实贮藏后期风味的损失。1-MCP处理还减轻了O℃贮藏的肥城桃果实冷害的发生和果实失重，但促进了20℃下肥城桃果实的腐烂和巨峰葡萄的脱粒现象。1-MCP对草莓果实腐烂发生率的影响则与温度有关：20℃下减轻，0℃下加重。

It was found that the main reason why SBS containing oil was easy to yellow was that there is plenty of polycyclic aromatic hydrocarbon in the extender oil,PAH can easily turned quinones with yellow.Antiyellowing performance of SBS can be only developed in a little extent when antioxidants were added.The anti-yellowing performanc...

研究结果表明，充油SBS产品变黄的主要原因是油品中的稠环芳烃在光氧环境中易转化为黄色的醌，添加抗氧剂对延缓产品变黄的作用不大，通过催化加氢消除填充油中的芳烃或添加适当的光稳定剂可以提高产品的耐黄变性能。

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。

The effect factors analysis based on FEM shows that: Raising the strength of concrete and the thickness of cover concrete would delay the cracking of concrete; Stress superposition would appear due to the influence of adjacent rebar, and increasing the rebar space would postpone the time of cover cracking; Stirrup could suppress the cracking of cover concrete, however, the effect is limited and the corrosion-degree-ratio and corrosion expansive force would not increase until the cover concrete cracking happens completely.

结合有限元分析结果，对影响锈胀开裂的各因素进行了分析，结果表明：提高混凝土强度、增加保护层厚度有助于延缓保护层的开裂；相邻钢筋的存在会使钢筋之间的混凝土出现应力叠加现象，箍筋对混凝土保护层内由锈胀产生的应力具有抑制作用，但是在保护层完全开裂之前，箍筋的抑制作用有限。

Extraction in crustaceans, salmon, shrimp, phosphorus, red algae astaxanthin, and removal of reactive oxygen species inhibit the capacity of the antioxidant power is 10 times more carotene, Q10 150 times, 550 times the vitamin can promote cell regeneration, slow down premature skin aging occur, and add the green tea extract can prevent the skin caused by ultraviolet radiation caused by aging, protecting cells to reduce the damage of UV on cell DNA, is effective against free radicals and prevent skin aging.

效用：萃取於甲壳类、鲑鱼、燐虾、红藻的虾红素，具有抑制及清除活性氧的能力，其抗氧化力是胡萝卜素的10倍、Q10的150倍，维他命的550倍，能促进细胞再生，延缓肌肤老化过早发生，并添加绿茶萃取能防止因紫外线造成所造成的皮肤老化，保护细胞减少紫外线对细胞DNA的伤害，有效对抗自由基，防止肌肤老化。

MAIN OUTCOME MEASURES: Morphology change of spinal cord was detected by light microscope and electronmicroscope, secreted brain-derived neurotrophic factor was measured by immunohistochemistry and PT-PCR, and the combine behavioral score was used to assess the functional recovery of spinal cord. RESULTS: Immunohistochemistry result showed that OECs transplantation could partly reduce the number of apoptosis cells in spinal gray matter, delay cells reduction in spinal white matter, and accelerate the medullary sheath repair and regeneration.

主要观察指标：应用光学显微镜、电子显微镜观察脊髓形态的变化，采用免疫组织化学、PT-PCR 的方法检测脊髓组织脑源性神经营养因子的分泌，以改良的Gale联合行为评分法对脊髓功能进行评定，结果：免疫组织化学检测显示，嗅鞘细胞移植能部分改善大鼠脊髓灰质神经细胞的凋亡程度，延缓白质神经纤维的减少，促进髓鞘的修复与再生。

Each 1 μL site of spinal cord receiving 109 /L OECs at the speed of 1μL/ min. MAIN OUTCOME MEASURES: Morphology change of spinal cord was detected by light microscope and electronmicroscope, secreted brain-derived neurotrophic factor was measured by immunohistochemistry and PT-PCR, and the combine behavioral score was used to assess the functional recovery of spinal cord. RESULTS: Immunohistochemistry result showed that OECs transplantation could partly reduce the number of apoptosis cells in spinal gray matter, delay cells reduction in spinal white matter, and accelerate the medullary sheath repair and regeneration.

主要观察指标：应用光学显微镜、电子显微镜观察脊髓形态的变化，采用免疫组织化学、PT-PCR 的方法检测脊髓组织脑源性神经营养因子的分泌，以改良的Gale联合行为评分法对脊髓功能进行评定，结果：免疫组织化学检测显示，嗅鞘细胞移植能部分改善大鼠脊髓灰质神经细胞的凋亡程度，延缓白质神经纤维的减少，促进髓鞘的修复与再生。

"Our results suggest that physical activity may delay the decline in pulmonary function occurring in middle and older age," lead author Margit Pelkonen, MD, from the University of Kuopio in Finland, says in a news release.

芬兰Kuopio大学的主要作者Margit Pelkonen博士表示，我们的研究结果建议，体育运动可以延缓中年和老年人的肺功能衰退，体育运动有益於肺部功能的效果，对於有无抽烟的人都是一致的。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。