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Water retention value of the bleached wheat pulp decreased The fiber of refined pulp have a more amorphous area, refined pulp contains more fines, more hydrogenous fibrils, colloidal cellulosic material can be produced on the surface of fibers.

纤维素酶酶解的是一些比表面积较大,亲水性较强的胶体性纤维,这些物质的去除也使纸浆的保水值下降。同时,酶攻击了纤维的薄弱处,使纸浆的聚合度稍有下降。

In order to further study, with a new method of preparation of DNA fibers which has conquered the disadvantage of the way of squashing in liquefacient nitrogen,high-quality fibers were been gotten from maize which has large genome and contains numerous types of highly repeat DNA elements.

为了进一步分析,对现有的提核方法进行了改进,采用了新的方法制备DNA纤维,克服了液氮研磨法的不足,并在基因组比较大,重复序列较多的玉米上获得成功,同时用伸展DNA纤维的荧光原位杂交技术测定了端粒DNA在玉米染色体上的拷贝数。

Under the hot-press parameters including temperature 200℃, press 5-7MPa and time 15 minutes, the IB of fiberboard at 0.88g/cm3 density which was made of Liquidambar formasana wood is higher than that of Pinus khasya var.

研究了三种木材纤维不同的漆酶处理条件与纤维板物理性能之间的相关性,找出了漆酶处理木纤维的最佳处理条件为pH3.0、时间2h、温度50℃、酶用量 20u/g;在温度200℃,压力5~7MPa,时间15min的热压工艺条件下压制成密度0.88g/cm3的纤维板,枫香纤维板比思茅松纤维板的IB 强度高,IB值可达到1.26MPa。

Rat AAA model was made by perfusion PPE elastase through the abdominal aorta, and the specimen was obtained on postoperativeday 3, 7, 14, 28, respectively. Specific elastic fiber staining was used to observe the disruption of elastic fiber in aortic wall. Immunohistochemistry staining of CD68 was applied to observe the microphage infiltration. The in tisu hybridization and western blot of MCP-1 and MMP-2 were used to study the expression of mRNA and protein. Thus we can analyze the facilitated function of MCP-1 gene to the microphage adherence and infiltration on the earlier AAA.

采用经腹主动脉腔内导管灌注的方法制成大鼠AAA模型,分别于术后3天、1周、2周、3周、4周获取各组大鼠腹主动脉标本,行弹力纤维特殊染色观察动脉壁弹力纤维的破坏情况;行CD68免疫组织化学染色观察动脉壁中巨噬细胞的浸润;行MCP-1及MMP-2的原位分子杂交、Western蛋白质印迹观察二者的mRNA表达和蛋白表达;分析MCP-1基因促进巨噬细胞的黏附、浸润在早期AAA发病中的作用。

The results showed that the influence of the percentage of the needle-shaped fiber on the impact strength of NF-WPC was significant, while much more significant on the bending and tensile properties. The percentage of MAPE influenced significantly to the tensile strength and toughness of NF-WPC. In the conditions of this paper the dimension of wood fiber and the percentage of lubricant paraffin had a minor influence on the mechanical properties of NF-WPC.

结果表明:针状木纤维的含量对NF-WPC冲击强度影响显著,对弯曲性能和拉伸性能的影响高度显著;偶联剂马来酸醉接枝聚乙烯的添加量对NF-WPC的拉伸强度、断裂伸长率和冲击强度影响显著;在本文的试验范围内,木纤维尺寸和润滑剂石蜡的含量对NF-WPC力学性能的影响不显著。

To some degree, this study revealed the relationship between ossein and bone miner and the important preventive and therapeutic effects of ossein on OP. It provides theoretical and experimental basis for the research and development of effective prescriptions to cure OP. Limited by the actual experimental situation, we only did some study on the synthesis and content of type Ⅰ collagen. Further study on the changes of decomposition and structure of type Ⅰ collagen are needed to be done.

本课题的研究,在一定程度上揭示了骨胶原纤维和矿物质之间互根互用的辨证关系,及Ⅰ型胶原在骨质疏松症的发病和治疗中所起的重要作用,并为开发研制治疗本病的有效中药复方提供了理论和实验依据,但由于条件所限,本研究仅就Ⅰ型胶原的合成及其含量变化做了初步观察,而本病中骨胶原纤维的分解代谢及其结构的改变,尚待进一步探讨。

Using supercritical propanol has many potential benefits. The reaction happens at manageable temperature and pressure, it recovers clean fibres in a condition that is close to virgin, and it also breaks down the matrix into usable chemicals.

用超临界丙醇有很多潜在的好处:反应发生的温度和压力在可控范围内;回收的纤维在最大程度上保留的原始纤维的特性,同时还能将树脂基进一步分解成有用的化学物质。

The results indicated that with the increasing of storage time, the leaves etiolated, contents of crude-fiber increased, while vitamin C, chlorogenic acid decreased, nitrate contents up to the maximum at the 3th day after storage , then decreased gradually. Stored at 2℃, the contents of chlorophyll, vitamin C, chlorogenic acid were higher, nitrate and crude-fiber contents were lower. The lower of membrane permeability and MDA content, the higher activity of SOD significantly delayed senescence process and prolonged storage life of Taraxacum mongolicum.

结果表明:采后蒲公英随着贮藏天数的增加,叶片逐渐黄化,粗纤维的含量升高,维生素C和绿原酸含量下降,硝酸盐含量先升高后降低;2℃下贮藏能够使采后蒲公英具有较高的叶绿素、维生素C、绿原酸,较低的硝酸盐和粗纤维含量,较低的细胞膜渗透率、MDA含量和较高的SOD活性,显著地延缓其衰老进程,延长贮藏寿命。

The suitable method to dissolve Antheraea pernyi silk fibroin fibers and the character of regenerated silk fibroin solution were investigated in this paper.

研究了柞蚕丝素纤维的溶解途径和再生丝素溶液的性质,指出硝酸钙和硫氰酸锂的浓溶液是柞蚕丝素纤维的良溶剂,再生柞蚕丝素的分子量为20kDa~102.4kDa,硝酸钙对丝素大分子的破坏程度比硫氰酸锂大。

This study testified the advantages of produce micron wood fiber such as high fiber production, low pollution and less water usage by mechanical method, drawing up a new scientific method of forming micron wood fiber at cell splliting level.

给出了理想的试验热压曲线,分析了实验过程应该注意的问题,验证了机械法制微米级木纤维得率最高、污染最小和用水量最少的优点,从细胞劈裂水平上提出了新的形成微米木纤维的科学方法。

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Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势,并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。

This dramatic range, steeper than the Himalayas, is the upturned rim of the eastern edge of Tibet, a plateau that has risen to 5 km in response to the slow but un stoppable collision of India with Asia that began about 55 million years ago and which continues unabated today.

这一引人注目的地域范围,比喜马拉雅山更加陡峭,是处于西藏东部边缘的朝上翻的边框地带。响应启始于约5500万年前的、缓慢的但却不可阻挡的印度与亚洲地壳板块碰撞,高原已上升至五千米,这种碰撞持续至今,毫无衰退。