Study achievement appears as following aspects : ( 1 ) yellow river estuary gate river flow and tide flow mixed area is not keep standing deposition status, on special income water and sediment conditions, boundary conditions and oceanic power conditions, this area may on the scour status ; ( 2 ) observed from estuary sediment deposition distributing process : delta and sea offing area sediment deposition vary trend is similar, each part sediment deposition scale varies as wave shape ; ( 3 ) on estuary gate, affect the sediment deposition factors, primary factors are tide prop, the gate widens gradually, estuary gate have branches, brine induced flocculation. this paper study the estuary gate widen, estuary gate have branches to affect the river channel deposition in quantity ; ( 4 ) based on field measured data, for the first time, deduce the estuary sediment deposition and distributing regress formula which can estimate estuary different areas sediment deposition volume ; ( 5 ) this subject demonstrate the estuary delta coastline dynamic balance conception, build the relationship between the estuary income sediment with deposition land area, draw the following important conclusion : when estuary years - averaged income sediment keeps at 345 million tons, the delta coastline may on the dynamic balance status. ( 6 ) this subject firstly brings up estuary sediment optimized control conception, and has the primary study on the macroscopically optimized control conception method
研究認為: ( 1 )黃河河口口門逕流潮汐區域並非持續保持淤積狀態,在特定的來水來沙、邊界條件和海洋動力條件下,該區域可以處于沖刷狀態; ( 2 )從河口泥沙沉積分配的過程來看:三角洲與濱海區泥沙的沉積變化趨勢是基本一致的,各部位的泥沙沉積比例變化基本呈波動狀態,且三角洲與濱海區泥沙的沉積比例與來沙量密切相關,基本成正比關系; ( 3 )在口門處,影響泥沙沉淤的因素主要集中在潮汐頂托、口門逐漸加寬、河口門分汊、鹽水造成
絮凝等,本報告主要對口門加寬,口門西妥理工大學工程碩士專業學位論文分漢對河道淤積的影響進行了定量分析: (一扣根據實測資料首次建立了河贖流路泥沙沉積分配的回歸計算式,據此可以預估計算河口不同區域泥沙的沉淤量; 、 5 )本項研究首次論證了河口三角洲岸線動態平衡的概念,並建立了黃河河口來沙量與造陸面積的相關關系,得出了當河口多年平均來沙量維持在3 . 45億t時其河口三角洲岸線則可能處于動態平衡狀態的重要
結論; 『 6 )本項研究首次提出了河口泥沙優化調控的概念,並對其宏觀優化調控模式進行了初步探討。
The flocculation morphology is an advanced subject that researchs flocculation processes from the reality sha pe and size of the colloid and the flocculating agent in the water, according to the reality structure of flocks
混凝形態學就是從水中膠體顆粒和所加混凝劑在水中的真實形狀和大小,以及由它們形成的
絮凝體真實
結構出發來研究整個混凝過程的一門較高層次的學科。
On the basis of theory analysis, the average transmitted light intensity ( correspond to dc value ) was determined as characteristic parameter of raw water using photoelectric method for monitoring the fluctuation of transmitted light and photometric dispersion analyzer ( pda ). the dc value was closely related to both particle concentration and surface area of sand clay simultaneously. the experimental results shows that there is an exponential function relation between dc and surface area of sand clay in unit volume water ( sp ) : dc = asbp in which a and b are empirical coefficients. then the formula of macromolecule flocculant dosage is found to be d = f ( dc ) = e ( dc ) f in which e and / are empirical coefficients and the average correlation coefficient equal to 0. 981. so the model of automatical control system of water treatment plant was established using the formula
應用透光率脈動檢測技術和光散射顆粒粒度分析儀( pda ) ,通過理論分析,將pda的輸出信號之一? ?平均透光強度(對應于dc值)作為原水的特性表徵參數, dc值可以同時反映顆粒濃度和比表面積因素的影響,試驗
結果證明, dc值與單位體積水中泥沙顆粒總表面積s _ p之間具有很好的冪函數關系: dc = cs _ p ~ d ,式中c 、 d為經驗系數,進而得到了以dc值為參數的高分子
絮凝劑投藥量公式: d = f ( dc ) = e ( dc ) ~ f ,式中: e 、 f為經驗系數,平均相關系數達0 . 981 ,利用所建立的公式,建立了前饋? ?后饋聯合控制的在線自動投藥模型。
Severe water deficit at seedling stage and wadding stage, medium water deficit at buds and bolls stage can be propitious to cotton yield
結果表明,調虧灌溉對棉花株高、蕾鈴脫落、成桃數等影響較顯著;苗期和吐
絮期重度水分虧缺、蕾鈴期中度水分虧缺均有利於棉花產量的形成。
The hk dvd version is a two disc package, with disc one featuring the film two endings are included but the alternate ending destroys the consistency of the movie a lot and is not recommended ! and disc two containing all the bonus materials. easter egg can be found on disc 2 by tapping down the cursor until the english film title
無間道的dvd是雙碟裝,碟一是本片包括兩個
結局,但大陸版的
結局草草收場,而且破壞了全片劇情的統一性,不值一看,碟二是特別收錄,有製作特輯花
絮music video等,另外還有隱藏的復活蛋收錄,只需在目錄不停向下按,直到指標移到左邊的infernal affairs英文片名,按下確定便會發現有八分鐘的ng片段。
In this paper, the crystal structure of montmorillonite is introduced and the purification methods ( including gravity separation, hydraulic classification, flocculation, centrifugal separation and chemical purification ), the purification principles and purification effectiveness of the methods were summarized
摘要總
結了蒙脫石的各種提純方法及其試驗原理和提純分離效果,主要涉及重力選礦、水力分析、
絮凝法、離心分離和化學提純。
The results showed that the rubber latex particles separated the clay into nanometer units, accompanied with the competition between separation of rubber latex particles and re - aggregation of single silicate layers upon addition of flocculant during the process of co - coagulating, while the intercalation of rubber molecules into clay galleries did not occur
結果表明,在加入
絮凝劑使橡膠乳液黏土水懸浮液共凝聚的過程中,由於存在膠乳粒子對黏土片層的隔離作用與在混合液中分散的黏土單片層的重新聚集作用的競爭,因此,在
絮凝物中,橡膠大分子將黏土片層隔離成納米分散單元(包括單片層和多片層的聚集體) ,在多片層的黏土聚集體層間沒有橡膠大分子插入。
The pullulation of floes is a random process and it has nonlinear character. if the fragmentation of floes is not considered, the routine flocculation process is to form the small group from initial particle and the big group from small groups. finally the biggest group is formed from those big groups
由於
絮凝體的成長是一個隨機過程,具有非線性的特徵,如果不考慮
絮凝體破碎的話,常規的
絮凝過程是由初始粒子
結成小的集團,小的集團又
結成大的集團,然後
結成更大的集團,這樣一步一步成長為粗大
絮凝體。
The mean diameter increases with the increase of alum dose, but the fractal dimension does not vary. however, extremely high dose of sluminum results in an increase of floc diameter but a decrease of the fractal dimension. the main reason is the sweep floes is too loose in their structure, and ca n ' t resist the shear force
隨著投藥量的增大,
絮凝體分形維數的變化較小,但
絮凝體平均粒徑顯著增加;當投藥量過高時,網掃
絮凝作用下的
絮體
結構鬆散,抗剪切能力差,具有較小的平均粒徑和分形維數。
The results indicated that large amounts of non - natural silver grains existed in this branch of lead concentrates and the silver grains were distributed around the galena in a loose flocculating form
結果表明,此批鉛精礦含有大量的非天然銀礦物,銀顆粒呈疏鬆
絮狀物分佈在方鉛礦周圍。
Based on basic structure, connected with hydrous expansion, flocculate and disintegration, the potential method by which clay mineral does damage to reservoir is analyzed theoretically
根據粘土礦物的基本
結構,
結合粘土的水化膨脹、
絮凝、分散情況,從理論上分析了粘土礦物對油層潛在的損害方式。
Organic bentonite - yh - 958 introduction : yh - 958 organic bentonite is the self - active organic bentonite. it can be added in every step of compounding paint, it no needs pre - gel or polar activator, it has perfect rheological, anti - settling and sag prevention. besides the characters of the other yh bentonite, yh - 958 function well in high gravity, low viscosity pigment solvent system
Yh - 958和978產品是國內首創的自活化有機膨潤土,可在調漆的任何階段加入,無需預凝膠和極性活化劑,分散細度可在20um以下,可用於面漆和底漆,提供油漆體系理想的流變性能,控制沉降和流掛,除具備同類產品的特點以外, yh - 958在較少添加量,低粘度的高比重顏料體系中形成微弱的
絮凝
結構,防止顏料沉
結
Study on the structure and application of the new cationic modified starch flocculant
新型陽離子改性澱粉絮凝劑的結構及其應用性能的研究