環多醇 的英文怎麼說

中文拼音 [huánduōchún]
環多醇 英文
cyclitol
  • 環 : Ⅰ名詞1 （環子） ring; hoop 2 （環節） link 3 （姓氏） a surname Ⅱ動詞（圍繞） surround; encircle;...
  • 醇 : Ⅰ名詞1 [書面語] （含酒精多的酒） mellow wine; good wine2 [化學] （有機化合物的一大類 含羥基的烴化...
  1. Epoxy resin adduct polyol reinforced flexible polyurethane foams

    環氧樹脂加成多元醇增強聚氨酯軟質泡沫塑料
  2. In order to improve the electro - catalytic activity of platinum based catalyst to methanol oxidation, in this thesis, firstly prepare heteropoly acid modified pt / gc electrode with different concentration by cyclic voltammetry method, and then test the cyclic voltammetry curves individually in vitriolic and methanol solution. the study shows the best concentration for both phosphomolybdic acid and phosphotungstic acid is 1 10 ~ ( - 3 ) mol / l. and find the more heteropoly acid modified on electrode, the lower peak - up potential towards methanol because of the existence of oxygenous species

    為了改善鉑基催化劑氧化甲醇的催化活性，本論文首先通過循環伏安掃描法制備了不同濃度磷鉬酸和磷鎢酸修飾的pt / gc電極，通過研究pt / gc電極在修飾前後在硫酸溶液中及含甲醇的硫酸溶液中的循環伏安行為發現，磷鉬酸和磷鎢酸均能在ptru / c電極上發生氧化還原反應，而且雜多酸修飾濃度對pt / gc電極氧化甲醇的催化活性有很大影響。
  3. New developments of polycarboxylic acid derivative catalysts, ion exchange resin catalysts, macrocyclic chelating compound catalysts, quaternary phosphonium salt catalysts, heterogeneous hydrotalcite - type catalysts and other catalysts which to be used in ethylene oxide catalytic hydration, and the catalysts of synthesis method of ethylene glycol via preparation and reaction of ethylene carbonate are expounded

    闡述了用於環氧乙烷催化水合反應中的多羧酸衍生物催化體系、離子交換樹脂催化體系、大環螯合物催化體系、季?鹽催化體系、多相水滑石型催化體系及其他催化體系近年來的研究進展；同時闡述了用於碳酸亞乙酯法合成乙二醇反應中的催化體系的新進展。
  4. Effects of diverse environmental factors on the growth rate ( od4oo ) and nitrogenase activity ( ara ) of the strain w12 hi nitrogen - free culture were investigated in our experiments. the results implied that the strain w12 could easily adapt to different cultural conditions : it could use various carbon sources ( especially glucose, sucrose, malic acid, mannitol ), propagate quickly and fix nitrogen at a temperature range of 15 ? to 40 ? and at 25 - 35 ? for optimum, at a ph range of 4 to 8. 5, at a saline concentration range of 0. 01 % to 1. 5 % ; low nlv " concentration had little effect on its nitrogenase activity. ara could also be detected when it grow in the culture media with 5mmol / l ntv "

    W12菌株對環境因子的適應性研究：無氮培養條件下，測定溫度、碳源、酸堿度、滲透壓對w12生長及固氮能力的影響，結果表明，在15 - 40下均能生長並表達固氮酶活性，其最適生長及固氮的溫度為25 - 35 ；能利用葡萄糖、蔗糖、蘋果酸、甘露醇等多種碳源生長並固氮，當培養基中同時存在蔗糖和蘋果酸時，細菌生長和固氮活性最強；在偏酸和偏堿的條件下（ ph4 . 5 - 8 . 5 ）均能保持較強的生長勢和較高的固氮酶活性，並能通過調節自身代謝平衡並適應環境的酸、堿性變化，使培養液趨于中性：能耐受較高的滲透壓，培養液中卜、 5 naci濃度對其生長和固氮酶活性影響不大，當naci濃度升至2時，菌株的生長勢及固氮酶活性才有所下降：低濃度的鉸對其固氮酶活性影響不大，在0
  5. Heteropoly blue q7pmo12o42 ( q = c5h5nc16h33 ) has been designed and synthesized as reaction - controlled phase - transfer catalyst for catalytic epoxidation of cyclohexene and catalytic oxidation of benzalcoho with h2o2 as the oxidant

    設計合成了第一個由磷鉬雜多藍作為反應控制相轉移化劑的反應體系，用於對環己烯進行催化環氧化，苯甲醇進行催化氧化。
  6. Thermodynamic methods were used to optimize gasifier, shift reaction and co2 removal, and methanol synthesis processes. polygeneration is a promising system to make the best use of thermal energy with different qualities to achieve high environmental and economic benefits

    本文以熱力學方法研究了多聯產系統的熱效率和火用損失，對氣化爐、水煤氣變換和脫碳以及甲醇合成等單元作了優化分析，指出了多聯產系統在能量利用方面的合理性，對其環境效益和經濟效益的綜合評估方法進行了初步探索。
  7. The main products includes various steam and electric heating reaction vessel, conduction oil, outer coil reaction vessel, polyester and resin completed equipments, vacuum reducing concentration tank, methanol and ethanol recovery tower, various corrugated stuffing, high effective membrane evaporator, new - type centrifugal drag membrane evaporator, vacuum rake dryer, condensing drum cut - off machine, shell - and - tube condenser,

    本廠主要產品有各類蒸氣電加熱反應鍋，導熱油外盤管反應鍋，聚脂樹脂全套設備，真空減壓濃縮罐，甲醇乙醇回收塔，各類波紋填料，高效薄膜蒸發器，新型離心刮板式薄膜蒸發器，真空耙式乾燥機，冷凝滾筒切片機，列管式冷凝器，螺旋板式換熱器，外循環蒸發器，鋁制槽車貯罐，乳化設備，高速剪切分散機，種子罐，發酵罐，多功能提取罐，並承接各類非標設備。
  8. The neutral bio - oi1 can be separated into three fractions : the fraction washed down by cyclohexane ( c1 ) mainly contains aromatics with up to four rings ; the fraction washed down by benzene ( c2 ) mainly contains alkyl - substituted aromatic hydrocarbons and polyphenols ; and the fraction washed down by methanol ( c3 ) mainly contains ester polar components

    中性油層析分離為3個餾分：環己烷洗脫餾分（ c1 ）主要為四環以下純縮合化合物；苯洗脫餾分（ c2 ）主要由單環烷基芳烴和多酚組成；甲醇洗脫餾分（ c3 ）主要是酯類極性化合物。
  9. The traditional catalyst used in acetal ( ketal ) synthetic reaction is strong inorganic acid. but there is some limits to its use because of its side reaction, strong erosion and liability to pollute the environment. molybdophosphoric acid is used as catalyst and three condensation products are prepared through the direct reaction of aldehydes ( ketones ) and ethylene. in addition, several elements of affecting the reaction is researched. it is proved that molybdophosphoric acid is very active as catalyst in less addition, the product yield is quite high and the quality of reuse is quite good

    縮醛（酮）合成反應的傳統催化劑為無機強酸，但由於副反應多、腐蝕性強和易污染環境等缺點，其使用受到限制.用磷鉬酸為催化劑，通過醛（酮）與乙二醇直接反應得到了三種縮合產物.對影響反應的諸因素進行研究，結果表明，用磷鉬酸作催化劑，用量小，活性高，產品收率較高，且重復使用性能較好
  10. Abstract : the traditional catalyst used in acetal ( ketal ) synthetic reaction is strong inorganic acid. but there is some limits to its use because of its side reaction, strong erosion and liability to pollute the environment. molybdophosphoric acid is used as catalyst and three condensation products are prepared through the direct reaction of aldehydes ( ketones ) and ethylene. in addition, several elements of affecting the reaction is researched. it is proved that molybdophosphoric acid is very active as catalyst in less addition, the product yield is quite high and the quality of reuse is quite good

    文摘:縮醛（酮）合成反應的傳統催化劑為無機強酸，但由於副反應多、腐蝕性強和易污染環境等缺點，其使用受到限制.用磷鉬酸為催化劑，通過醛（酮）與乙二醇直接反應得到了三種縮合產物.對影響反應的諸因素進行研究，結果表明，用磷鉬酸作催化劑，用量小，活性高，產品收率較高，且重復使用性能較好
  11. Catalytic synthesis of cyclohexanone ethylene ketal with h3pw12o40 pan

    磷鎢雜多酸摻雜聚苯胺催化合成環己酮乙二醇縮酮
  12. Catalytic synthesis of cyclohexanone ethylene ketal with h3pw6mo6o40 tio

    二氧化鈦負載磷鎢鉬雜多酸催化合成環己酮乙二醇縮酮
  13. Cell adhesion to surface of the substrate is essential to development of the anchorage - dependent cells. only after adhering to surface followed by spreading can cells develop and proliferate. most synthetic polymers used as orthopaedic matrix substitute present hydrophobicity, which may correlates to the low degree of cell attachment. modification with cell adhesion protein / peptides can be benificial to the cell adhesion on polymers and then affect the cell proliferation and differentiation. cell attachment to substrate is primarily mediated by integrins, a widely expressed family of heterodimeric surface receptors. most extrcellular matrix proteins such as fibronectin, osteopontin, collagen type i, bone sialoprotein and vitronectin contain an arg - gly - asp ( rgd ) sequence which is specific to the fixation of cell membrane receptors like integrin. the main aim of this research is to measure, assess adhesion, proliferation of rabbit marrow stromal cells ( mscs ) on the polymers coated by fibronectin, collagen type i or biotie gen, which includes : ( 1 ) biologic characteristics of rabbit mscs were observed by two types of separating method in primary culture. ( 2 ) adhesion, proliferation and differentiation of mscs cultured on polymers coated with biotiegen were assessed. ( 3 ) also, adhesion, proliferation and differentiation of mscs were assessed on plga film or porous plga substrates coated with fibronectin, or collagen type i respectively. ( 4 ) bone formation was observed on the porous plga substrates coated with collagen type i in vivo. this research aims to give new way to make novel synthetic bone with cell adhesion and high bone induction capabilities

    因此將這些蛋白包被、固定到材料表面，觀察骨組織工程種子細胞mscs細胞的粘附、生長特性是本研究的中心環節，並從以下方面進行探討： （ 1 ）採用不同原代細胞分離方法，研究其對mscs細胞的生物學特性影響。 （ 2 ）檢測基因勝肽膠對mscs細胞粘附、增殖及分化的影響。 （ 3 ）分別採用型膠原及纖維粘連蛋白（ fibronectin ， fn ）包被聚乙醇酸-乳酸共聚物（ poly （ 1actide - co - glycolide ） ， plga ）膜及多孔塊型plga材料，觀察細胞在單層或三維培養狀態下，型膠原及fn對mscs細胞粘附、增殖及向成骨細胞分化效應及能力。
  14. It is not just that they are supporting a relatively dirty version of ethanol ( far better to import brazil ' s sugar - based liquor ) ; they are also offsetting older grain subsidies that lowered prices by encouraging overproduction

    一方面，該政策補貼的是相對說來更不環保的乙醇品種（進口以蔗糖為原料的巴西產乙醇則好得多） ；另一方面，該政策抵消了過去通過鼓勵過剩生產從而降低價格的穀物補貼政策。
  15. The shifting reaction consumed energy but increased the methanol synthesis ratio and the system efficiency. the energy method was used to analyse the effect of methanol synthesis ratio on system efficiency to show the advantages of polygeneration system

    本文以能量分析的結果來說明多聯產系統效率隨甲醇合成產率（以接近平衡態的程度表示）的變化規律，指出了變換反應在能量利用和環境保護上的合理性。
  16. The company covers and area of 15, 000 square meters and is primarily engaged in the production of lacquers and reinforced plastic grids. irs products include ipn8710 series of macromolecule antiseptic paints of polyurethane and polyethylene across each other, d97 series of epoxy antiseptic paints, d99series of interior and exterior wall paints of acrylate, dh1800 series of epoxy industrial terra paints of all colors, dn series of high temperature resisting antiseptic paints of organic silicon, and rainforced plastic grids of all kinds of specifications. with an annual capacity of more than 2000 tons, the company is one of the professional manufacturers of various antiseptic paints and reinforced plastic grids

    公司佔地面積15000平方，固定資產500萬元，主要產品有ipn8710聚氨脂、聚乙烯互穿網路系列防腐塗料， d97環氧系列防腐塗料， d99丙烯酸系列內外墻乳膠塗料， dh1800系列各色環氧工業地坪塗料， dn有機硅耐高溫防腐塗料和玻璃鋼產品及污水、自來水廠防腐配套設施、玻璃鋼井蓋等系列產品，公司集聚胺酯類、醇酸類、環氧類等多種產品，近百個品種，年生產能力2000噸，是生產各種防腐材料及環氧地坪系列的專業廠家。
  17. Poly ( propylene carbonate ) polyols was synthesized by the copolymerization of carbon dioxide with propylene oxide in the presence of double metallic catalyst in loop reactor

    摘要以二氧化碳3環氧丙烷為原材料，在雙金屬氰化物催化劑催化下，利用環流反應器合成聚碳酸亞丙酯多元醇。
  18. Phytases catalyze the hydrolysis of phytic acid or phytate ( myo - inositol hexakisphosphate ) to inositol and inorganic phosphate. their roles in eliminating anti - nutritional effects of phytate in plant fodder or foods, in increasing the efficiencies of protein and various microelement utilizations in the animal body and the animal productivities, in reducing the amount of phosphorus in animal excretions and thus reducing environmental pollutions, etc, have been the research focuses domestically and internationally

    植酸酶是一類能催化植酸及植酸鹽水解成肌醇和無機磷酸鹽的酶，它具有解除植物性飼料（或食品）中植酸的抗營養作用、提高機體對蛋白質及多種微量元素的利用率、促進生長發育、提高動物生產性能、減少糞便中磷的排放量、降低磷對環境的污染等多種功能，因而受到國內外的廣泛關注。
  19. In comparison with unmodified epoxy resin, the impart strength of modified epoxy resin by fh type polyether polyols has increased by 124 %, the fracture toughness ratio by 89 %, and the fracture energy ratio by 260 %

    與未改性的環氧樹脂相比，用fh聚醚多元醇改性環氧樹脂的沖擊強度增加124 % ，斷裂韌性比增加89 % ，斷裂能比增加260 % 。
  20. For farmers, plantation of sweet sorghum can earn 100 150 yuan more than plantation of corn. one ton of fuel ethanol can replace one tone of fuel oil ; replacement of one ton of fuel oil means reduction of 3 tons of co2 emission, which may be support by the cdm mechanism. application of fuel ethanol can decrease the pollutant emission from vehicles and thus improve the atmosphere environment

    本項技術成熟效益明顯：農民種植甜高粱比種玉米每畝地可多收入100 150元每噸燃料乙醇可以替代1噸燃料油每替代1噸燃料油，可減排二氧化碳3噸，可獲得cdm機制的優惠支持同時減少汽車有害氣體排放，有利於大氣環境改善。
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