first filtration 中文意思是什麼

first filtration 解釋
頭道過濾
  • first : adj 1 最初的，最早的。2 最上等的，第一流的。3 基本的，概要的。4 高音（調）的。n 1 最初，第一；第...
  • filtration : n. 過濾；滲入。 automatic （centrifugal） filtration 自動（離心）過濾。
  1. The effort of manganese removal was studied and the kinetics of manganese removal was tried to establish. the factors of dissolved oxygen concentration, fe2 + concentration, ph, p concentration and closing of the filter were studied to evaluate their effort for biological manganese removal, and the correlation of residual manganese and oxidation - reduction potential was also discussed. as the iron content of water was high, experiment results showed that the reaction was zero order, as the iron content of water was low, the reaction was first order. the time needed for the cultivation of biological manganese removal was 60 70 days. the filter operated at the filtration rate of 8 10m / h, silica sand of effective size 0. 95 1. 25mm filled the filter to a depth of 1200mm

    試驗結果表明，成熟后濾砂表面濾膜的x射線衍射圖譜與mno _ x ? 5h _ 2o （ x = 1 . 86 ）的x射線衍射圖譜一樣，濾膜成熟后的結構在進水物質不發生變化的情況下不發生變化;合適的碳磷比對生物除錳有明顯的促進作用，試驗條件下的投磷量不會對出水造成二次污染;生物除錳需要亞鐵的參與，亞鐵的存在除了能夠促進微生物分泌胞外酶並刺激其活性外，還通過鐵離子的變價傳遞電子，催化錳離子的氧化反應，從而促進對二價錳的降解。
  2. The support membrane is polyethersulfone ultrafiltration membrane, the concentration of polyacrylic acid was selected at 0. 05wt %, a suitable paa / pei ratio was 1 / 5 - 1 / 10 with a number of 4 bilayers. the molecular weight of paa was 4 000 000. the corresponding filtration time of the first paa layer range was 10 minutes while the reaction time was 20 minutes

    基膜選用聚醚碸超濾膜，聚丙烯酸濃度為0 . 05wt % ，聚丙烯酸與聚乙烯亞胺濃度配比為1 / 5 - 1 / 10 ，復合四層， paa分子量4000000 ，首層過濾時間10min ，過濾反應時間20min 。
  3. We have sifted 103 medicinal plants, roughly identified 17 plants might contain antifungal proteins. antifungal protein was purified from cassia sophera linn, by extraction, fraction with ( nh _ ( 4 ) ) _ ( 2 ) so _ ( 4 ), cation - exchange chromatography of cm - sepharose ff xk 26, the first cation - exchange chromatography of mono s and the second one, followed by gel filtration of superose 12hr

    對茳芒決明進行了抗菌蛋白的分離純化：經粉碎、磷酸緩沖液浸提、硫酸銨沉澱、 cm - sepharoseffxk26陽離子交換層析、兩次monos陽離子交換層析、 superose12hr分子篩層析可得到具抗真菌活性的蛋白。
  4. The first category covers maintenance of air - conditioning, electrical and mechanical installations of eight government departments in the transport and security sectors, as well as other services that may be required by all government department and public bodies, e. g. certification of lighting appliances, indoor air quality measurement, overhaul of swimming pool filtration plants and sewage plants

    第一類是為8個屬運輸及保安組別的政府部門的空氣調節及機電裝置，提供維修服務；此外，該部亦會為所有政府部門及公共機構提供其他所需服務，例如為起重設備簽發檢驗證明、測量室內空氣質素、為泳池的過濾裝置及污水處理裝置進行大修。
  5. The antimicrobial secretion could be divided into three sections, every section had antimicrobial activity. the first could be extracted by petroleum ether, the second could be extracted by ethyl alcohol, the third could dissove in water and could be separated by sephadex g - 50, g200 gel filtration chromatography and carbornmethyl cellulose - 1 anion - exchange chromatography and detected by a256, . the antimicrobial secretion had wide spectrum and had strong inhitory activity against germs and fungi, they could inhibit sixteen kinds of plant pathogenic germs, eight kinds of animal germs and eight kinds of plant pathogenic fungi

    粗提物經石油醚萃取可得第一個活性部分，剩餘部分經無水乙醇萃取可得第二個活性部分，剩餘物質再經凝膠sephadexg - 50後有兩個峰，第二峰有活性，再經凝膠sephadexg - 200後有三峰，第二峰有活性，將其經過陽離子交換柱cm - 1後有兩峰，此兩峰均有抑菌活性。
  6. To isolate and purify dnaase in the earthworm first, the tissue extract of earthworm was prepared by dissolving the earthworm with sucrose and denaturing the protein with low ph buffer. then dnaase was purified by denaturing the protein with higher temperature. the following steps were ammonium sulfate precipitation, deae - cellulose ( de52 ) chromatography and filtration by ultra - filter membrane

    雙胸蚓組織中dna酶的分離純化採用蔗糖溶解雙胸蚓，並選擇性酸變性制備雙胸蚓組織粗提取液，再經選擇性熱變性、硫酸銨分段鹽析、 deae ?纖維素（ de52 ）柱層析及超濾膜分級分離對雙胸蚓組織中dna酶進行分離純化。
  7. The guangzhou nine red fine chemical industry limited companies, are located the scenery beautifully, the transportation convenience guangzhou god mountain industrial district, the factory area ten chinese acres, 10, 000 square meter production workshops, introduction overseas first - class cosmetics production line ， has the enclosed air conditioning workshop, large - scale vacuum mulser, fills automatically installs the production line equipment, the advanced examination system, the purification processing system, the disinfection filtration system, and is equipped with complete micro examines the room and the biochemistry checkout room

    廣州市九紅精細化工有限公司，位於風景秀麗、交通便利的廣州神山工業區，工廠佔地面積十余畝， 1萬余平方米的生產車間，引進國外一流的化妝品生產線，具備封閉式空調車間，大型真空乳化機，自動灌裝生產線設備，先進的檢測系統，凈化處理系統，消毒過濾系統，並設有完備的微檢室和生化檢驗室。
  8. Shengda filtration technology co ltd is a professional manufacturer of filtration equipment, purified equipment, oil - water separators and high - accuracy cartridges. we take the market requirements as business target, science technology as ourguide, strictly stand to the aim : " quality first, customer first ", and place our best service for our customers

    公司堅持「以人為本，科技領先」的企業發展理念，堅持市場需求為導向，科學技術為頭，嚴格遵守「質量第一，用戶至上」的宗旨，竭誠為用戶服務。
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