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The myoblasts are the precursor of the maturated muscle cells, while the satellite cells are a kind of mononucleus cells which have the characteristics and function of the myoblasts. The satellite cells participate in the growth of skeletal muscle, the repair after injury of the muscle and provide nuclei to the maturated muscle for the normal alternation of cell nuclei. They are very important to the maintenance of the function of skeletal muscle.

成肌细胞为成熟肌细胞的前体细胞,而肌卫星细胞则是成熟骨骼肌组织中具有成肌细胞特征和功能的一类细胞,参与骨骼肌的生长、损伤后的修复以及为正常骨骼肌细胞核的更替提供细胞核,对骨骼肌正常功能状态的维持很重要。

The membrane formation processes include two main processes, the evaporation process was dynamically monitored with FTIR-ATR and the immersion process was dynamically photoed with optical microscope. The kinetic effect of the dry/wet phase inversion process on the morphology has been studied.

动态监测成膜过程的不同阶段,用傅立叶变换红外光谱仪来研究干相转化的蒸发过程,采用数码相机连续照相的方法,用光学显微镜来研究湿相转化的凝胶过程,并探讨成膜动力学过程对膜的最终结构及性能的影响。

Two series of polyurethane acrylate grafted acrylic resins (Acr-g-TPU-PETA and Acr-gPPU-PETA) self-emulsifying systems are obtained by grafting -NCO group modified polyurethane acrylates with acrylic copolymer prepared from n-butyl acrylate, styrene,βhydroxyethyl methacrylate and acrylic acid The self-emulsifying systems showed Newtonian fluidity with viscosity closed to that of water, the solid contents were around 30% The T〓 of 15~4℃ for dried film before photocuring favored film formation at room temperature DSC and DMA results showed that PU-PETA is compatible with acrylic resin in the grafted resin The TG and dTG curves for Acr-g-PU-PETA samples were substantially different from the corresponding blends, and the brodened dTG peaks for photocured grafted resin suggest that there might be multiple interactions among chain segments The photocued film of the grafted resins self-emulsifying system exhibited good overall properties with polyurethane acrylate grafts ranging from 30% to 50%, and Acr-g-TPU-PETA series showed better properties than Acr-gPPU-PETA series The adhesion of the photocured film was 1~2 grade, impact strength was 50kg-cm and flexibility was 1mm The Shore hardness and the adhesion of the film decreased markedly if PETA was replaced by HEMA as photoactive group due to the lower C=C double bond content in the grafted resin The polyhydroxy amine-linked thioxanthones photoinitiators can be evenly dispersed in self-emulsifying system without color spot appearing in the dried film The films photocured with IV〓~IV〓 generally exhibited higher Shore hardness, gloss and solventresistance than that cured with Irgacure 2959 and did not induce the rusting of the iron substrate Pigmenting with titanium oxide had no effect on the photocuring The polyhydroxy amine-linked thioxanthone IV〓 and IV〓 can be new candidates for the formulation of titanium oxide pigmented photocurable water-borne coatings for their pale-yellow appearance and slight interference with the color of the coatings WB 4759 with high water-solubility coalesced and separated from the dried resin film, and even induced the rusting of iron substrate.

以丙烯酸丁酯,甲基丙烯酸-β-羟乙酯,丙烯酸及苯乙烯合成厂丙烯酸共聚树脂,并与含-NCO端基的聚氨酯丙烯酸酯接枝反应,经水性化后,得到两个系列(Acr-g-TPU-PETA和Acr-g-PPU-PETA)各5个不同配比的丙烯酸树脂接枝聚氨酯丙烯酸酯自乳化体系,粘度与水相近,为牛顿流体,固含量30%左右。光固化前干燥涂膜的玻璃化转变温度在-15℃~4℃之间,有利于室温下成膜。DSC及DMA谱表明两种树脂基本相容。Acr-g-PU-PETA的热失重行为明显不同于共混材料,接枝样dTG峰明显宽化,表明接枝样中链段之间的相互作刚有多重性,丙烯酸树脂与聚氨酯之间有一定的相容性。接枝树脂自乳化体系光固化涂层的综合性能以聚氨酯丙烯酸酯成分为50%~30%者相对较好,且以Acr-g-TPU-PETA系列更理想。光固化膜的附着力为1~2级,冲击强度为50kg·cm,柔软性多为1mm。以HEMA代替PETA作为接枝树脂的活性基团,碳—碳双键密度太低,光固化膜交联点太少,硬度和附着力均较差。多羟基胺连硫杂蒽酮光引发剂能均匀分散于树脂自乳化体系和接枝树脂干膜中,不出现色斑,光固化膜肖氏硬度一般高于以Irgacure 2959为光引发剂的光固化膜,光泽度及耐丁酮溶剂性能均有所提高,不会诱导铁基生锈,钛白着色对光固化结果几乎没有影响。本论文所合成的多羟基胺连硫杂蒽酮光引发剂IV〓与IV〓为浅黄色,对光固化涂层的颜色干扰较小,为配制钛白着色光固化水性涂料提供了新的光引发剂。水溶性太强的WB 4759在干膜中易聚结析出,且对所附着的铁基有诱导锈蚀作用。

Study of the gas generation and petroleum systems indicates that these two depressions have good gas reservoiring conditions and are very important prospects for gas exploration in the western Taiwan Basin.

通过对烃源岩成烃作用和含气系统的分析认为,以上2个坳陷具备天然气成藏的良好时空配置,是台西盆地天然气勘探的重要前景区。

It was proved through experiment that optimum passive numerical shimming can achieve a high level in superconducting NMR imaging magnets and it can be realized very easily and very economically. Field regression is not absolutely necessary in the technique of optimum passive numerical shimming, but it is useful to know the structure of the field error Bz'.

磁场回归在超导核磁共振成像主磁体的无源数值匀场技术中虽然并不是绝对必需的,但在对主磁体进行无源数值匀场时,如能知道成像空间内不均匀磁场的磁场偏差B〓的结构,也是非常有用的。

So matched filter imaging algorithms improvements and imaging algorithms by other ways appeared. At first, in this thesis the rationale of synthetic aperture radar imaging is briefly synopsized.

本论文着重研究了匹配滤波成像的改进方法以及其它的重建图像算法的原理和方法,特别对合成孔径雷达超分辨率成像算法进行了探讨。

The results showed that the activities of extracellular pectin methyltrans-eliminase, pectinase, extracellular C1 and proteinase were activated by asarum essential oils; the activities of pectin methylgalactuionase and intracellular C1 were activated at first, then inhibited and activated again; the activities of intracellular pectin methyltrans-eliminase were mostly inhibited; the activities of Cx were entirely inhibited by asarum essential oils, the percentage of inhibition was in proportion to the asarum essential oil concentration.

结果表明:辽细辛精油对胞外PMTE酶、果胶总酶、胞外C1酶和蛋白酶表现为激活作用,对PMG酶和胞内C1酶则表现为先激活后抑制再激活作用,对胞内PMTE酶主要表现为抑制作用;对Cx酶表现为完全的抑制作用,且酶活抑制率与精油浓度成正比。

In this paper, incising blasting engineering in granite row stone exploitation as the research object, in order to analyze the fracturing mechanism principles of V-shaped notch blasting and the influence of blasting parameter changing to V-shaped notch blasting effect, the elastic-plastic isotropy and multi-notched hole of plane strain model is set up. Dynamical finite element analysis software ANSYS/LS-DYNA is applied to calculate dynamic stress distribution and its change rule of rock around notched holes and between two holes, and dynamic fracturing mechanism is analyzed with fracture mechanics theory.

文章以花岗岩荒料开采中的切割爆破工程实践为研究对象,为分析V形刻槽爆破成缝机理及爆破参数改变对刻槽爆破效果影响等内容,建立了各向同性脆性材料的多刻槽孔准平面应变模型,以显式动力分析有限元程序ANSYS/LS-DYNA为模拟运算工具,详细计算了在动载作用下槽孔周围及双孔连心线上岩体的动态应力分布与变化规律,并运用断裂力学理论分析刻槽爆破动态成缝机理。

The results were as follows: Longan can be induced to form floral bud and bloom in 60 days. When CTK was added to KClO_3, more distinct effects were observed.

结果表明:龙眼树用KClO3进行成花诱导处理,60 d左右开花,添加CTK对促进龙眼成花效果更明显。

Methods 20 patients with complete left bundle branch block and 20 normal subjects were studied.

方法对20例完全性左束支传导阻滞患者和20例正常人解剖M型在心室波群区观察室间隔与左室后壁运动;运用频谱多普勒成像技术测量左、右心室射血前期时间(LVPET、RVPET),计算两者之差PETd;采用定量组织速度成像技术测量右室侧壁基底段和左室各壁基底段达收缩期峰值速度时限和达舒张早期峰值速度的时限。

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