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Low molecular weight mannuronic acid, guluronic acid and κ carrageenan were prepared from algin and carrageenan by the acid hydrolysis method, and their weight average molecular weights and the distribution widths of molecular weight were determined by high performance gel permeation chromatography respectively.

本文以褐藻胶和κ-卡拉胶为原料通过酸水解分别获得了低聚的甘露糖醛酸、古罗糖醛酸和低聚κ-卡拉胶，并采用 HPGPC法测定了这 3种低聚糖的重均分子量。在此基础上再经硫酸酯化和成盐修饰制备了各自的硫酸酯碱式铝盐。

During the study, researchers recorded the width of the tree rings of balsam firs. Each ring marked a year of the tree's growth. A narrow ring indicated that the tree's growth had been suppressed that year.

在此研究中，研究者们记录了胶冷杉的年轮和宽度，一圈年轮代表胶冷杉成长了一年，某一圈较为细密的年轮代表在这一年内胶冷杉的成长受到了压制。

Propolis is a colloid substance comprised of the resin collected by bee from plant bud and twig, and the secretion of mandibular gland and the beeswax, which is greyish green or yellowish brown in color.

蜂胶是蜜蜂从胶源植物的新生枝芽处采集的树脂类物质，经过蜜蜂混入其上颚腺、蜡腺分泌物反复加工而成的胶状物质，多为青褐色、黄褐色。

Methods 50 SD rats of C6 brain glioma into the caudate nucleus by stereotactic methods were established.

目的 建立稳定可靠的大鼠C6脑神经胶质瘤模型，并运用1.5 T MRI观察脑胶质瘤瘤体生长的变化规律，为进行脑胶质瘤的在体实验研究提供基础。

MgO thin films were successfully prepared on Si substrate by a novel and simple Sol-Gel method. The results indicated that collodion is a key element to form stable MgO sols. The structures of MgO films are closely related to the amount of collodion and the annealing temperature.

摘 要 以硝酸镁为起始原料，胶棉液为添加剂，在Si(100)衬底上成功地制备MgO薄膜，结果表明，胶棉液是形成MgO溶胶的关键组份；薄膜的晶体结构与胶棉液的含量及退火温度有关。

The relationship between the speed of gelation and the concentration of crosslink agent was also simulated.

模拟预测了凝胶化开始的时间，得到了凝胶化过程中分子量分布的演化规律和胶团生长的三维图像。

The function mechanism among the minerals and floatation drugs had been studied with the way of IR and academic calculation, which pointed out that absorption of G-4 on the surface of phosphorite belonged to physical and chemical types, but the chemical one was in the highest flight. Absorption of amine collector named GE-609 on the surface of quartz belonged to electrostatic and physical type. Distilled water could hardly wash the GE-609 down from the surface of quartz. Leading component of S-721 was the concentrated compound of naphthol sulfonic acid and formaldehyde. The compound had a stronger affinity to the Mg~(2+) on surface of dolomite than the Ca2+ on surface of phosphorite, which is the essential reason in the separation of phosphorite and dolomite. The leading components of soluble glass in function were HSiO3 hydronium and F^SiC^ colloid granule.

通过红外光谱测定以及理论计算的方法研究了选矿药剂与矿物间的作用机理，研究表明：脂肪酸捕收剂G-4对胶磷矿的捕收作用是以化学吸附为主、化学吸附与物理吸附共同作用的结果；胺类阳离子捕收剂GE-609在石英表面的吸附属于静电物理吸附，但很难用水洗的方法使GE-609从石英表面脱附；S-721主要成分为萘酚磺酸与甲醛的缩合物，萘酚磺酸与甲醛的缩合物对白云石表面Mg~(2+)的吸附明显强于对胶磷矿表面Ca~(2+)的吸附，这是胶磷矿与白云石分离的根本原因；水玻璃溶液中对石英起抑制作用的主要组分是HSiO_3~-和H_2SiO_3胶粒，水玻璃除对石英起抑制作用外，对矿浆还具有一定的分散作用。

The result shows that for both PCL homopolymers and PCL-b-PEG block copolymers, the spherulitic linear growth rate first increases with molecular weight and reaches a maximum, then decreases as molecular weight increases. Crystallization temperature has greater influence on the spherulitic growth rate of polymers with higher molecular weight.

当自由PEG在水中的占有面积S_o与单根PEG链段所占有的表面积S的比值S_o／S的值接近或小于3时，PEG链段对胶束形状的影响较小，PCL嵌段的影响占主导地位，易形成片状胶束；当S_o／S的值在3-10之间时，随着PCL嵌段分子量的增加，PCL-b-PEG嵌段共聚物在水溶液中自组装形成类似球状、棒状和蠕虫状胶束，是PEG与PCL嵌段共同的作用的结果；当S_o／S的值大于10时，易形成球状胶束。

Kangdai Ⅰ has protective function to the damaged neurons and astrocytes: Main results:(1) It has direct protective function to the damaged neurons. It can increase the activity and survival rate, decrease the mortality and the transudation rate of LDH in cultured medium and the strong positive cell count of NOS expression of injured neurons.(2) It has also directly protective function to the damaged astrocytes. It can increase the activity and survival rate and protein content in conditioned medium.(3) It can strengthen the ability of BDNF, GDNF, bFGF, HSP and IL-6expression in damaged astrocytes.(4) It can also strengthen obviously the expressions of NSE, bFGF-receptor and bc1-2, lower the expression of bax and caspase-3.(5) It can indirectly protect and restore the damaged neurons by astrocytes. Because the effect of ACMK (ACM interfered by Kangdai Ⅰ) is stronger than ACM+K (ACM associated with Kangdai Ⅰ).

抗呆Ⅰ号对受损的神经元和星形胶质细胞均具有保护作用：主要表现为：(1)对受损神经元具有直接的保护作用，可提高受损神经元的活性和存活率，降低细胞培养液LDH的漏出率、细胞死亡率和NOS染色强阳性细胞的表达量；(2)对受损的星形胶质细胞也有直接的保护作用，可提高其活性、存活率以及培养液蛋白质的含量；(3)能增强受损星形胶质细胞分泌BDNF、GDNF、bFGF、HSP和IL-6的能力；(4)可明显增强受损神经元对NSE、bFGF的受体和bc1-2的表达，降低受损神经元对bax和caspase-3的表达；(5)抗呆Ⅰ号可通过星形胶质细胞间接地保护和修复受损的神经元，因为在多数实验组中经抗呆Ⅰ号作用的ACM的作用远大于ACM与抗呆Ⅰ号联合应用的作用，统计学上具有显著性差异。

Hard candy is one white sugar, starch-based material syrup taste of a hard, brittle candy; Hard candy is candy sandwich containing rolls of hard candy; White sugar are creamed candy, starch syrup, oil and dairy products mainly made of materials, protein not below 1.5% fat not less than 3.0%, has a special flavor and creamed Coke flavor candy; gel candy is edible glue, white sugar and starch syrup material mainly made of soft texture of candy; the surface is polished candy Bright solid candy; gum is white sugar candy and plastic-based material can be made of materials or blowing chewing candy; inflatable of sugar candy is within the finer uniform bubble candy; Pressed candy after granulation, bonding, forming the suppression of candy.

其中硬质糖果是以白砂糖、淀粉糖浆为主料的一类口感硬、脆的糖果；硬质夹心糖果是糖果中含有馅心的硬质糖果；乳脂糖果是以白砂糖、淀粉糖浆、油脂和乳制品为主料制成的，蛋白质不低于1.5%，脂肪不低于3.0%，具有特殊乳脂香味和焦香味的糖果；凝胶糖果是以食用胶、白砂糖和淀粉糖浆为主料制成的质地柔软的糖果；抛光糖果是表面光亮坚实的糖果；胶基糖果是用白砂糖和胶基物质为主料制成的可咀嚼或可吹泡的糖果；充气糖果是糖体内部有细密、均匀气泡的糖果；压片糖果是经过造粒、黏合、压制成型的糖果。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失