untreated surface 中文意思是什麼

The authour investigate the dosing conditions and effect of the pac to the huanghe water - source, which includes the following four parts : the selection of the pac ; the confirmation of dosing scheme and effect of the pac ; the research of application of potassium permanganate in combination with pac ; the research of the pac ' s modification and the modified effectiveness. the experiment is mainly carried out on the pilot system in the jieyuan water plan of tianjin. the results of the reseach include the following : l ) the pac from zunhua plant is selected as the better carbon for the source water of tianjin through the experiment ; 2 ) through the pilot experiment we conclude that the pac ' s best adding point is the mixing tank and the better dose is 10mg / l, on which the codmn of filtered water can be decreased to 40 % and the effluent have no problem of odour and color ; 3the adsorbing experiment show that pac mainly adsorb the organic matters which molecular wt., distribution between 500 and 3000, and can adsorb organic matters whose molecular wt., distribution are bigger than 6000 if the dose of it is adequent ; 4 ) pac together with potassium permanganate can remove the organic matter more effectively than each of them alone, and reduce the rising trend of turbidity of the flotation ' s effluent due to adding pac ; 5 ) the thesis made a research on the surface properties and the adsorbing capability of the modified carbon by oxidizer : the modified carbon with 20 % h2o2 can remove more organic pollutants than the untreated one by 12 % when we add a higher dose of coagulant ; 6 ) the modification of reduction and loading metal ions are also sttldied, and drow the following conclusions : the modified carbon with 5 % ammonia can enhance the organic matter ' s removal effectiveness by 10 % to the tianjin source water than the untreated one, and the modified one with loading metal ion remove the organic matters from the tianjin source water better ( 8 % ) than the untreated one due to the strong affinity betwween the humic acid and copper ion

本文的實驗主要是在天津芥園水廠的中試系統上完成的，論文的成果和結論主要包括： 1 ）通過靜態實驗選定河北遵化活性炭廠生產的煤質炭為適合天津原水的炭種； 2 ）中試實驗確定粉末活性炭的較佳投加點為混合池投加，較佳投加量為10mg l ，此時可使濾后水的cod _ （ mn ）降低40 ，且可較好地控制濾后水的嗅味和色度； 3 ）初步確定粉末活性炭對原水中有機物的吸附主要集中在分子量在500 - 3000范圍內，投量增大時可吸附部分分子量大於6000的有機物4 ）中試實驗表明：粉末活性炭與高錳酸鉀聯用可取得較兩者單獨應用時對有機物更好的去除效果，且對因投加粉末活性炭而造成的氣浮出水濁度升高有一定的改善作用； 5 ）研究並初步確定氧化改性對粉末活性炭表面性質和有機物的去除效果的影響：粉末活性炭的氧化改性會使其表面的酸性官能團大量增強，表面極性增加；經20的過氧化氫改性的活性炭在增大混凝劑投加量（ fecl _ 3投量為15mg l ）時對有機物的總體去除效果較原活性炭提高12 ， 1次氯酸鈉改性活性炭對有機物的去除效果較原活性炭提高6 ； 6 ）研究並初步確定還原改性、負載金屬離子對原水中有機物的去除效果的影響：經5氨水改性的活性炭可提高天津源水中有機物的去除率達到10 ；負載銅離子后的活性炭可提高對腐殖酸類物質的去除能力，一般可提高8左右。

The experiment result discovered the grafting effect of crylic acid and acrylamide were obvious which can be proved by the sem photoes. by the ft - ir testing of the grafted uhmwpe fabric, we discovered that some new polar groups were introduced to the surface. then by the dynamic wetting experiment of the grafted uhmwpe fabric, we concluded that the wetting time was a parabola relation with the graft ratio and the wetting time of the grafted uhmwpe fabric was less than that of untreated fabric. the results showed that after the coradiation grafting, uhmwpe fiber ' s surficial nonreactivity could be improved effectively

通過對接枝uhmwpe織物的紅外光譜分析，發現其表面引入了許多新的極性基團。最後運用了纖維動態浸潤性分析了接枝后的效果，得到所測浸潤穩定時間與接枝率成拋物線關系，而且接枝樣品的浸潤穩定時間都比未處理樣品的浸潤穩定時間小些，這說明了共輻照接枝的方法可以有效地改善uhmwpe纖維表面惰性，達到uhmwpe纖維表面改性的目的。

The dry sliding wear properties of ptfe composites filled with surface treated and untreated nano - alaoa were tested on the model mm - 200 tester, the effects of filled nano - abos content >

利用mm - 200型磨損試驗機考察了納米al _ 2o _ 3含量、載荷和對摩時間對表面處理納米al _ 2o _ 3填充ptfe復合材料在干摩擦滑動條件下摩擦磨損性能的影響。

Compared with untreated graphite under the same condition, the surface electric potential of treated graphite changes in part, but unlike a1 ( oh ) 3, the oxidation ratio decreases 10 % when a1 ( oh ) 3 / graphite ( wt % ) = 10, and the wetting angle of treated graphite hold the line, namely the wetting ability is not improved. contrasted with the hydrolyze coating way, the deposition coating way has simple technical process, lower cost, and its disadvantage, for instance, coat layer distributes unevenly, the wetting ability is not improved. furthermore, the effect of treated graphite applied in mgo - c castables are investigated

經沉澱法改性后，石墨的表面電性發生了一定的變化，其等電點從2 3變為7 8 ，但與al （ oh ） _ 3的等電點（ 8 9 ）存在一定的差異；接觸角測定結果則表明，經沉澱法改性后，石墨與水的接觸角並沒有改變，即改性石墨與水的潤濕性沒有明顯改善；當al （ oh ） _ 3石墨（ wt ） = 10時，改性石墨的氧化失重率比未改性石墨下降了約10 ，這說明經沉澱法改性后，石墨的抗氧化性得到了一定的改善。

Treated by hydrolyze coating way, the surface electric potential of graphite moves and iep changes from 2 - 3 to 8 - 9, reach the one of a1 ( oh ) 3 ; moreover, the wetting angle of treated graphite decreased 10, and the oxidation ratio decreased 20 % when al ( oh ) 3 / graphite ( wt % ) = 10, compared with untreated graphite under the same condition. that is to say, the wetting and anti - oxidation ability of graphite is improved, after treated by hydrolyze coating way

經水解法改性后，石墨的表面電性發生改變，其等電點由2 3變為8 9 ，與al （ oh ） _ 3的等電點相近；與未改性石墨相比，改性石墨與水的接觸角下降約10 。當al （ oh ） _ 3石墨（ wt ） = 10時，水解法改性石墨的氧化失重率比未改性石墨下降了約20 ，因此經水解法改性后，石墨與水的潤濕性有所改善，抗氧化性有所提高。

Load and sliding speed on the wear mass lose were evaluated. at the same time, in order to estimate the role of different surface treatments on nano - inorganic filler and ptfe composites, ptfe composites filled with surface untreated nano - alios were prepared as antithesis at the same condition

同時，為了評價表面處理方法在無機納米粒子塑料復合材料中所起的作用，制備了一份具有相同含量但未經表面處理納米al _ 2o _ 3填充ptfe ，在相同工況下進行對比試驗研究。

Cover all wounds properly and avoid contacting wounds with soil and untreated surface waters

妥善包紮傷口，避免傷口接觸泥土；

First, it is associated with the prepared conditions of spectral pure graphite electrode ; second, compared with the untreated graphite, the surface functional groups of ? oh and ? cooh on the treated one increased dramatically with hot concentrated h2so4 and the impurities on electrode surface decreased significantly with ultrasonic rinse. a sequence reaction mechanism was proposed for the eis of mn ( ) / mn ( ) on different graphite electrodes. the spectral graphite and the treated one can be suitable for the inert electrode of mn ( ) / mn ( ) cathode

分析原因認為：一方面與光譜純石墨電極的制備條件有關；另一方面，與未處理石墨電極相比，處理石墨表面含氧官能團? oh 、 ? cooh明顯增多，而且超聲清洗又使其表面雜質含量減少，並提出了一個反應機理解釋mn （ iii ） / mn （ ii ）電對在三種石墨電極上阻抗譜的不同，說明光譜純石墨和處理石墨均可以作為mn （ iii ） / mn （ ii ）正極電對的惰性工作電極。