查询词典 urethane

METHODS: The rats in the two groups were anaesthetized by intraperitoneal injection of 10 g/L urethane (1 g/kg) and the chest was opened to insert a tube into the ascending aorta for perfusion with 200 mL of the mixture containing glutaric dialdehyde and paraformaldehyde for fixation.

两组大鼠给予质量浓度为10 g/L的乌拉坦1 g/kg腹腔内注射，麻醉后开胸，升主动脉插管，戊二醛与多聚甲醛混合固定液200 mL灌流固定，取嗅球，振荡切片，锇酸后固定，平板包埋，光镜下选取嗅球各层，制备超薄切片，透射电镜下对比观察。

The synthesized PCU was then characterized by infrared spectroscopy, differential scanning calorimetry, thermogravimetric analysis, small-angle X-ray scattering, and tensile strength measurement. The IR showed that the polymer synthesized by the above two methods both have the polycarbonate-urethane structure and the tensile measurement showed good mechanical performance of the polymer. The DSC and TGA data showed that there is an obvious soft-hard glass transition area, which indicated the existence of the micro-phase separation structure. The extent of the phase separation was affected by the ratio of starting materials, the molecular weight of PCD, and the polymerization method. The decomposition upon heating was observed in two steps. SAXS result showed that the radius (r_2), the distance between domains (d_2), and gyral radius (R_2) of hard segment micro-domain were fairly affected by the starting materials ratio and soft segment content.

IR结果表明两种方法合成的聚合产物均具有聚碳酸酯聚氨酯的结构；拉伸实验表明聚合产物具有良好的力学性能；DSC、TG结果表明，聚合物呈现出较为明显的软硬段玻璃化转变区，表明存在微相分离的结构，相分离的程度受原料配比、软段分子量、聚合方法的影响，其热分解分为明显的两个阶段； SAXS结果表明，聚合物原料配比、软段含量的变化对硬段微区回旋半径R_2，微区间距d_2，微区半径r_2影响不大其值分别为9.5(A|°、29、7.4，但对软段的微区半径及间距影响较大，随着软段含量的增大，软段微区的半径r1和间距d1都增大。

In ternary system of PGA/POH and HDI isocyanurate, there are twomain reactions: one forms urethane at 30-50℃, the other producesoxazolidone at 140-165℃.

聚丙烯酸环氧丙酯（PGA、聚丙烯酸羟丙酯（POH和HDI三聚体的三元反应体系中，醇羟基与异氰酸酯在30-50℃下反应可生成氨酯，环氧基团与异氰酸酯在140-165℃下反应生成噁唑烷酮。

Overproof of monomer content is the key problem that restricts poly-urethane coatings' development.

介绍了聚氨酯涂料中游离二异氰酸酯单体含量超标和单体分离方法研究现状，并指出单体含量超标是制约聚氨酯涂料发展的关键问题。

ABSTRACT AIM: To study the effects of dl-, l- and d-3-n-butylphthalide on pial arteriole diameter and blood flow velocity in focal ischemia rats. METHODS: Urethane-anesthetized rats were instrumented for monitoring pial AD and BFV in the cranial window preparation.

经多年研究表明，本室研制开发的一类新型抗脑缺血药物丁基苯酞，有调节脑缺血状态下脑能量代谢［1］、增加缺血区脑血流量［2］、缩小脑梗塞面积、减轻脑水肿［3］、改善脑缺血后神经功能缺损症状的作用。

Methods Spontaneous afferent discharge of subdiaphragmatic vagus nerve was recorded in urethane anesthetized rats.

方法采用电生理学方法记录膈下迷走神经传入自发放电为观察指标，观察外周静脉注射不同剂量的5-HT（3、10、30μg/kg）、5-HT3受体的拮抗剂格拉司琼（1mg/kg）以及5-HT＋SEC对其的影响。

It indicated that when the midbrain reticular formation induced cortical desynchronization through the thalamocortical loop, it simultaneously excitated an inhibitory path which acted on the bodies of dentate granule cells and declined the excitability of granule cells. After the injection of Urethane, the negative correlation between EPSPs and PSs were weakened.

这可能是因为：中脑网状结构上行激励系统通过丘脑-皮层回路使ECoG去同步化时，同时也通过另一途径，即隔-海马连接，激活了作用于齿状回颗粒细胞胞体的抑制性神经通路，使得颗粒细胞兴奋性降低，从而使反应动作电位总和的PS幅值减小。

The reaction kinetics of polyurethane formation and that of trimerization of isocyanate in a system of polyisocyanurate modified by urethane were studied by FTIR. The results show that the two competing reactions occurred and progressed simultaneously, and the trimerization was found to be first order, and the polyurethane formation was first order with respect to the isocyanate concentration and zero order with respect to the polyol concentration.

采用傅里叶快速红外光谱技术研究了氨酯改性聚异氰脲酸酯反应体系中氨酯、聚异氰脲酸酯生成的反应动力学，结果表明，在该反应体系中，氨酯反应和异氰酸酯的三聚反应是同步发生并同步进行的，其中三聚反应是一级反应；氨酯对异氰酸酯是一级反应，对聚醚二元醇为0级反应。

For clarity during bad weather conditions the Oakley A Frame has a flexible urethane chassis, that is cut with ram air surge ports, which give you defogging ventilation from circular air flow.

为明确起见，在恶劣天气条件下，奥克利框架有一个灵活的聚氨酯底盘，这是切冲压空气激增端口，让您从环形defogging通风气流。

N=6.1.Sham operated group: which were administrated with 10% glucose injection(2ml/kg) abdomently. One hour later, w ire narcotized with Urethane, then,one side femoral vein was separated.

假手术组：术前1h腹腔注射10％GS注射液2ml／kg，然后用乌拉坦(1.0g／kg)麻醉后分离一侧股静脉，由股静脉注入NS0.1ml／kg。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。