滤

The influence of the filter cake structure and the filter rate was discussed by adding diatomaceous earth.

通过加压过滤实验，得到絮凝后滤饼的过滤特性；在此基础上，加入硅藻土助滤剂以探讨对滤饼结构和过滤速率的影响，并考察滤饼的比阻值及可压缩性。

The result makes clear, 2 class give urban sewage plant on the molecular quantity interval that organic owner should center the dissolvability in water water in kDa, and the content of organic matter compares hydrophoby the element of content big; of organic matter measures hydrophily interval distributings different organic thing shows water to accept filter film flux and hold back rate having distinct effect, the organic matter under molecular quantity 2kDa causes accept filter film to appear water flux attenuation bigger, organic matter is held back rate is minor, the organic matter that amounts to 57.2%; element to measure 10 ～ 100kDa causes accept filter film to appear water flux attenuation gentlier, organic matter is held back rate is older however highest the organic matter that amounts to 73.8%; to kiss scanty sex to differ shows water to accept filter film flux and hold back rate having distinct effect, classics is right of velar surface obstruction determine, confirm cause film to appear water flux and the main material that hold back rate change to be hydrophoby material, and the change that hydrophily material causes is minor.

结果表明，城市污水厂二级出水水中的溶解性有机物主要集中在kDa的分子量区间上，且疏水性有机物的含量比亲水性有机物的含量大；分子量区间分布不同的有机物对纳滤膜透水通量和截留率有着不同的影响，分子量2kDa以下的有机物引起纳滤膜透水通量衰减较大，有机物截留率较小，达57.2%；分子量10～100kDa的有机物引起纳滤膜透水通量衰减较平缓，有机物截留率却较大最高达73.8%；亲疏性不同的有机物对纳滤膜透水通量和截留率有着不同的影响，经对膜表面阻力的测定，证实引起膜透水通量和截留率变化的主要物质为疏水性物质，而亲水性物质引起的变化较小。

The expression of Galectin-3 and S100A4 in 68 cases of thyroid follicular hyperplasic nodule was detected by immunohistochemistrical Envision method beside 17 cases of follicular adenoma, 6 cases of adenomatous nodular goiter, 14 cases of follicular variant of papillary carcinoma and 31 cases of follicular carcinoma.

采用免疫组织化学方法检测68例甲状腺滤泡性增生结节中Galectin-3和S100A4蛋白的表达，包括17例滤泡性腺瘤，6例腺瘤性甲状腺肿，14例滤泡亚型乳头状癌和31例滤泡癌。

A shift model has been established for the first time on the basis of interlayer compensating effect of multilayer thin films, and the shift range of wavelength has been calculated using equal dividing method, the result was co incide with the measured result.

并对设计的滤光片采用对分法计算了它在低温条件下波长的漂移量，计算结果与研制出的滤光片实测结果吻合很好。并成功地将研究结果应用于滤光片的设计，对原设计结果进行了准确的修正，使得最终研制的滤光片在低温下完全满足使用要求。

Contented family name exceeds filter device to exceed filter film to be core component with contented family name, the engineering company Euramerican environment that leaves by water treatment of contented family name and process solution banner depends on his the design ability of high level and assemble craft masterlily to assemble and become.

陶氏超滤装置(也称为超滤设备、超滤系统等)以陶氏超滤膜为核心元件，由陶氏水处理(通过物化方法去除水中一些物质的过程)及过程解决方案旗下的工程公司欧美环境凭借其高标准的设计能力和精湛的装配工艺组装而成。

Results of operation over two months had revealed that this catalyst had good olefin-reducing ability and heavy oil converting ability adapted to paraffinic feedstock.

结果表明，采用的5种助滤剂对抚顺石油化工公司石油二厂酮苯脱蜡车间的原料油都有好的助滤效果。助滤剂不同，其加入量不同，助滤效果也不同。

In this thesis, we find that dlg is indispensible in the establishment of anterior-posterior and dorsal-ventral polarity of drosophila oocyte. Removal of Dlg function from the posterior follicle cells using the FLP/FRT system leads to disruption of oocyte skeleton reconstruction that is elicited by the failure of those posterior cells to differentiate normally in mid-oogenesis. We demonstrate that abnormity of Notch, JAK-STAT and EGFR signal pathway in dlg mutants contributes to this aberrant differentiation. dlg null mutant also blocks the normal differentiation of two groups of anterior follicle cell-stretched cell and centripetal cell, but not border cell, with a lower penetrance. However unlike the result in posterior follicle cells, Notch and JAK-STAT signaling are both undisrupted in all mutant anterior follicle cells, implying other fate determinants may be involved.

我们的研究发现，后端滤泡细胞中的Dlg在果蝇卵子发生中期卵母细胞前后轴和背腹轴建立过程中也是必须的，PFC中dlg完全缺失型突变引起PFC的分化异常，导致卵子发生中期卵母细胞骨架重组异常，Stau、Grk等极性决定蛋白定位错误。dlg突变阻碍了Notch、JAK-STAT、EGFR等调节PFC分化的信号通路的激活。dlg突变的PFC也没有获得前端滤泡细胞命运。dlg突变不影响前端滤泡细胞群中边界细胞的分化，但是在一定程度上影响伸展细胞和向心细胞的分化，并且这种影响不依赖于前端滤泡细胞Notch或JAK-STAT信号激活的异常。

Biofilm is fragmented and mainly composed of zoogloeas on the cracks and concaves of the filter media. The bacteria in biofilm or activated sludge of aerobic filter are mainly bacilus and filamentous bacteria.

滤料上的生物膜是不连续的，微生物主要以菌胶团的形式存在于滤料上的孔洞内和表面凹陷处；无论是滤料上的生物膜，还是滤床孔隙内的活性污泥，其中的细菌以各种杆菌及丝状菌为主。

At the same time, the fouling mechanism of membranes given in this thesis can give a reasonable explanation on the change of membrane performance. Our results show that the magnetization of membranes can effectively improve the anti-fouling ability of the PAN- Fe_3O_4 membrane. The obtained result may give insight to the development of new membranes with a good anti-fouling performance in the filtration of blood solution. No chemical bond was found between PAN and Fe_3O_4 in the membrane at room temperature. The addition of Fe_3O_4 can improve the temperatures of dehydrogenated reaction and decomposition of PAN but dot change the glassy transition temperature. The resistance against acid is stronger than the resistance to base for a PAN- Fe_3O_4 membrane.

结果表明在PAN- Fe_3O_4超滤膜制备过程中使用外加磁场作用能有效提高膜的耐污染能力，这一结果为开发适用于血液处理的耐污染超滤膜提供了一种新途径；在PAN- Fe_3O_4超滤膜中，四氧化三铁与PAN在室温下没有形成化学键，也不存在官能团之间的相互作用；添加Fe_3O_4对膜的玻璃化温度没有影响，但能提高PAN环化脱氢反应的温度和分解温度；PAN- Fe_3O_4超滤膜的耐酸性强于耐碱性，在pH值为10以上的溶液中由于水解作用而溶解，使得膜失去使用价值，膜的耐酸性与酸的种类、浓度和氧化性有关。

Ou Fu the pore filter plant Limited company founded in 1999 is mainly en gaged in filters the splitter, the specialized production porepurifier, purified oneself the type filter elem ent purifier, as soon as the muddylike filter element purifier, bag the type purifier, the Pe pore filter pipe, the stainless steel filter element, the filter pocket and so on, was domestic solid crosses splitter's the largescale production base.

欧尔福微孔过滤设备有限公司创建于1999年主要从事过滤分离设备，专业生产微孔过滤机，自清式滤芯过滤机，烛式滤芯过滤机，袋式过滤机，PE微孔过滤管，不锈钢滤芯，滤袋等，是国内固液分离设备的大型生产基地。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。