By making some assumptions, collision frequency were presented. then the the flocculation kinetics model was established through population balance equation. comparison of experimental data and modeling results indicate that there are the same trend between the two. so the model can predict floes number and size during flocculation of yellow river ' s loess particles without using empirical parameters. the tem and sem were used to obsever floes in the study of floe structure. the flocculation was divided as flocculi, floc and floe aggregate. the floes structure model was established by assumption that particles position in floe accords with tetrahedron. the fractal dimension of model and experimental floes was found to be coincidentso the model can reflect the structure of flocs formed in flocculation of yellow river ' s loess particles by macromolecule flocculant at a certain extent
最後，本文還對絮凝動力學和絮體結構進行了研究，在前人研究的基礎上，針對高分子絮凝黃河泥
沙，對絮凝過程作了一些符合試驗條件的假設，建立了顆粒碰撞頻率表達式，應用了顆粒數量平衡方程，從而建立了絮凝過程的動力學生長模型，模型計算結果與試驗數據對比表明，二者趨勢一致，在沒有使用經驗
參數的情況下基本上能夠描述黃河泥
沙絮凝過程中絮體數量和尺寸分佈的變化過程；對絮體結構的研究中，應用掃描電子顯微鏡和透射電子顯微鏡對絮體進行了觀察，將絮體分為絮粒、絮團和絮網三個不同的生長階段，通過假設顆粒結合位置符西安建築科技大學博士學位論文合正四面體，建立了絮體結構模型，計算得到的模型絮體分形維數基本與試驗中的實際絮體相符，在一定程度上能夠反映高分子絮凝黃河泥
沙生成的絮體結構。
Sergeant axmann tricks them into joining the foreign legion, after which they discover axmann ? s collaboration with the nasty sheik hamud el khalid
劇情講述兩傻
參加外籍兵團前往
沙漠作戰，卑鄙的軍官故意把他們整得半死，但結果卻因禍得福成為英雄。
The race, which started and finished at pak sha wan pier in hebe haven, is in its second year. ten teams competed, more than double the number in 2004
第二屆觀魚大賽于白
沙灣碼頭開始及結束，本年共有10支隊伍
參賽，數目較去年上升超過一倍。
Methods methods of botany and pharmacognosy were used to study the source species of radix glehniae
方法：利用植物學與生藥學方法對北
沙參種質資源進行了研究。
Results according to the analysis and determination of imperatorin, carbohydrate components, amino - acid, extracts, ash and water content, the results showed that the harvest period of radix giehniae in october was appropriate, the process of being sliced with skin and dried under the sunshine or in the oven at low temperature after being washed quickly was the best, the effect of fermented bacteria fertilizer was the best and the second was k2so4 compound fertilizer and k2so4 fertilizer, the contents of carbohydrate components and extracts of radix glehniae " baiyintiao " were the highest and the content of imperatorin of radix glehniae " dahongpao1 was the highest, the quality of radix glehniae during blooming or seeds setting period was worse, the quality of radix glehniae planted in hucheng laiyang was better than those planted in anguo hebei and inner mongolia
結果：通過對歐前胡素、糖類成分、氨基酸、浸出物、灰分和水分的分析測定，結果表明：北
沙參採收以10月份為宜；藥材加工以趁鮮水洗、帶皮切片曬干或低溫烘乾最佳；追肥以酵素菌高效生物肥效果最好，其次為硫酸鉀復合肥、硫酸鉀；栽培品種「白銀條」的糖類成分和浸出物含量最高，而「大紅袍」的歐前胡素含量最高；當年開花和當年結種的北
沙參質量較差；北
沙參藥材質量以萊陽胡城產最佳，而河北安國和內蒙古產的則較差。
Also inappropriate and ophiopogon, with the use shashen, not with mustard and fresh
還不宜與麥冬、
沙參同用，不宜與芥菜同食。
This special subject is a part of the studies on gap of radix glehniae from ministry of science and technology of china
本專題為國家科技部課題「北
沙參規范化種植與質量標準研究」的一部分。
Bring to boil, add in solomonseal rhizome, lady bell root, candied jujubes, tangerine peels, sea coconut and ginger
和響螺撈起，移至燉鍋與滾水同煮，加入玉竹、
沙參、蜜棗、陳皮、海底椰和薑片。
The purpose of this thesis is to provide scientific data to establish gap criteria and system of the quality evaluation of radix glehniae
旨在為建立北
沙參的gap標準和藥材質量評價指標提供科學的資料與數據。
The subject probed into the source species and varieties identification of radix glehniae, one of shandong geo - authentic medicinal materials. the relation was studied between the quality and such factors as accumulation of components and the chemical components of different producing areas, processing methods, fertilizers and cultivars
專題探討了：山東「道地藥材」北
沙參的種質資源與品種鑒定；不同產地、不同加工方法、不同追肥、不同栽培品種的化學成分與藥材質量的關系；成分積累與質量的關系；藥材的質量評價方法與質控指標。
Improving effect of radix adenophorae potanini korsh polysaccharides on chemical - induced impairment of learning and memory in mice
南沙參多糖改善化學品誘導小鼠學習記憶障礙的研究
