羥基二酸 的英文怎麼說

中文拼音 [qiǎngjīèrsuān]
羥基二酸 英文
hydroxybutanedioic acid
  • 羥 : 名詞[化學] （羥基） hydroxyl （group）
  • 二 : Ⅰ數詞（一加一后所得） two Ⅱ形容詞（兩樣） different
  • 酸 : 酸構詞成分。
  1. A review on application of monohydrated sodium bisulfate as catalyst in synthesis of ester, such as monocarboxylic esters, dicarboxylic esters, chloroacetates, hydroxycarboxylic esters, aromatic esters and the reusability of sodium bisulfate with

    摘要介紹了一水硫酸氫鈉在催化合成酯（如一元羧酸酯、二元羧酸酯、氯乙酸酯、羥基酸脂、芳香酸酯）中的應用及其重復催化性能。
  2. A mixture of catechin and epicatechin, procyanidin b4, 4 - hydroxy - benzoic acid and ethyl gal - late were purified and identified from grape seed procyanidin extract

    得到2種原花青素的單體： （ + ） -兒茶素和（ - ） -表兒茶素； 1種原花青素二聚體b4 ； 2種其他酚類物質：對羥基苯甲酸及沒食子酸乙酯。
  3. The present work indicates the organic nf membranes and the inorganic nf membranes all have shortages, so develop composite nf membranes that have low cost, mechanically strong and thermally / chemically - resistant, easy to cleanout and good performances is a very important task. in this paper, the preparation of inorganic - organic composite nf membranes were presented. this composite comprise a porous sio2 / al2o3 support substrate, the pore diameters of which ranging from 10 to 15 nm, this inorganic support substrate having a polymer membrane which comprises an polyvinyl alcohol ( pva ) or polyamide ( pa ) densely deposited on at least one of the face surfaces thereof, the structural porosity of such pva and pa membrane ranging from 3 to 5 nm

    本論文以開發無機?有機復合納濾膜為出發點，首先在al _ 2o _ 3多孔微濾膜上利用溶膠?凝膠法制備sio _ 2 al _ 2o _ 3無機復合超濾膜作為無機?有機復合納濾膜的基膜；選用聚乙烯醇和聚酰胺為表面功能層材料，分別探討了以羥基丁二酸和磺基水楊酸為混合交聯劑，採用浸塗法制備了聚乙烯醇sio _ 2 ? al _ 2o _ 3復合納濾膜；以均苯二甲酰氯、哌嗪和二胺為單體，採用界面聚合法制備了聚酰胺sio _ 2 ? al _ 2o _ 3復合納濾膜，並對影響膜性能的諸多因素進行系統研究。
  4. Glycol is oxidized rapidly by it to oxalic and glycolic acids.

    乙二醇迅速地被它氧化，生成草酸和羥基醋酸。
  5. Manufactures a range of brominated aromatics, phenylhydrazine and hydrazide derivatives, heterocyclic compounds, and a series of other intermediate chemicals. also imports and trades in several organic chemicals

    - d -對羥基苯甘氨酸， d -對羥基苯甘氨酸鄧鉀鹽，雌莫司汀磷酸鈉，雌二醇氨芥磷酸鈉的生產廠家。
  6. In order to find replacer for metronidazole and drug selection. some diesters or esters of acids containing nitrogen with metronidazole were designed and synthesized, which have difference in water - solubility. metronidazole was reacted with the corresponding amino or imino multi - carboxylic acid compounds in the presence of acetic anhydride or thionyl chloride or dcc. the intermediate of nitrilotriacetic acid with ac

    為尋找羥乙基甲硝唑的替代物，分別採用酸酐法酰氯法或dcc法，將氨基羧酸與羥乙基甲硝唑反應，得到5個親水性不同的單酯或二酯，用ms譜確證了次氨基三乙酸與乙酸酐反應的中間物，並對得到的酯的
  7. A butylated hydroxyanisole or butylated hydroxytoluene or mixtures thereof within the limits specified in part ii of this schedule may be used in conjunction with propyl gallate or octyl gallate or dodecyl gallate or mixture thereof within the limits specified, provided that the total amount of antioxidant shall not exceed, in the case of anhydrous oils and fats and vitamin oils and concentrates, and partial glycerol esters, 300 parts per million, in the case of butter for manufacturing purposes, 240 parts per million and in the case of essential oils and isolates from the concentrates of essential oils, 1000 parts per million

    A不超逾本附表第ii部所指明分量的經丁化作用的羥基茴香醚或經丁化作用的羥基甲苯或其混合物，可與不超逾指明分量的丙基?酸鹽或辛基?酸鹽或十二烷基?酸鹽或其混合物同時使用，但添加於無水食油及脂肪維他命油及其濃縮物及部分丙三醇酯的抗氧化劑總分量，不得超逾百萬分之300 ，添加於作製造用途的牛油的抗氧化劑總分量，不得超逾百萬分之240 ，而添加於香精油及香精油濃縮物的分離物的抗氧化劑總分量，則不得超逾百萬分之1000 。
  8. But it is mainly dependant on the physical parameters such as volume shrinkage. and when phbv crystallized, the hv content will be segregated, it will be accelerated when crystallization temperature is increased

    在結晶過程中， phbv二元共晶中hv （羥基戊酸）組分會受到排斥，結晶溫度的升高會導致hv組分分凝現象的加劇。
  9. The reaction pathways were proposed as follows : firstly, hydroxylation of aromatic ring, then ring cleavage forming dicarboxylic acid and eventually oxidation to inorganic carbon

    其機理為：首先是苯環羥基化，然後環破裂生成二元羧酸，最後二元羧酸氧化降解為二氧化碳和水。
  10. The synthesis technology of various liquid rubbers with different active group terminated, such as hydroxyl - terminated, carboxyl - terminated, isocyanate - terminated, ami - no - terminated, mercaptan - terminated and various main chains like polybutadiene, polyurethane, polystyrene were reviewed with 23 references

    摘要綜述了端羥基、端羧基、端異氰酸酯基、端氨基、端巰基等活性端基，以及聚丁二烯、聚氨酯、聚苯乙烯等不同主鏈結構的液體橡膠的合成技術。
  11. Production 1, 2 hydroxy beta 4 - formic acid, a beta consignment sales produced products

    生產1 、 4 -二羥基萘甲酸、甲萘醌，銷售自產產品。
  12. Especially, when - bi together with a little carbon black ( cb ) or copper salt is used, the catalytic effect is better ; the flame structures of the double - base propellants containing - bi are similar to the typical plateau double - base propellant, but the combustion temperature distribution has been changed because of adding the - bi ; and the active components of catalysts deposit on the burning surface of propellants and the quenched surfaces of propellants with various catalysts possess different structure

    它與銅鹽和少量炭黑（ cb ）復合后，催化效果更優； 2 ， 4 -二羥基苯甲酸鉍加入后，推進劑的火焰結構保持了典型平臺雙基推進劑的結構特徵，但改變了雙基推進劑燃燒波溫度分佈，炭黑和銅鹽的加入對2 ， 4 -二羥基苯甲酸鉍的催化作用有很大影響；催化劑分解的活性組分富集在燃燒表面，不同催化劑使推進劑熄火表面形成不同的結構。
  13. It was confirmed that the key enzyme of coq10 synthesis is p - hydroxybenzoate polyprenyltransferase, encoded by gene ubia in e. coli and lacks specificity to the aggregation length of its substrate ( polyisoprenyl pyrophosphate ). if gene ubia can be introduced into psb and is high expression in psb, a recombinant strain producing coq10 could be obtained. consequently, the productive cost will decrease sharply

    業已證實coq _ （ 10 ）生物合成的關鍵酶為對羥基苯甲酸聚異戊二烯焦磷酸轉移酶（在大腸桿菌中該酶由ubia基因編碼） ，該類酶對底物聚異戊二烯焦磷酸（ ppp ）的聚合長度並無特殊要求。
  14. Due to the unique high affinity and reversible interactions with diols, boronic acid - based fluorescent sensors can be used in carbohydrate sensing and recognition

    摘要有機硼酸類熒光傳感器可與二羥基化合物進行高親和性且可逆地結合，故可用於糖類傳感和識別。
  15. Phosphorus - containing curing agents include mainly phosphorus - containing amine - type curing agent, phosphorus - containing hydroxyl - type curing agent and diethylphosphite - type curing agent

    主要包括胺類含磷固化劑、磷羥基類固化劑及二亞膦酸酯固化劑。
  16. According to the preservatives in food regulations cap. 132bd, permitted antioxidants in specified food include only propyl gallate octyl gallate dodecy gallate, butylated hydroxyanisole, butylated hydroxytoluene and ethoxyquin. tbhq is not specified in the said regulations and it is not a permitted antioxidant in fats and oils in hong kong

    食物內防腐劑規例第132bd章規定，獲準添加於指明食物的抗氧化劑只限於丙基?酸鹽辛基?酸鹽十二烷基?酸鹽經丁化作用的羥基茴香醚經丁化作用的羥基甲苯及乙氧基奎。
  17. This approach includes lifestyle modifications, such as dietary changes and smoking cessation and the use of hmg - coa reductase inhibitors ( statins ), which are able to correct the lipid status and to prevent major cardiovascular events independently of the baseline lipidaemic or cardiovascular status

    這些方法包括生活方式的改變，如飲食改變，戒煙以及運用-羥- -甲基戊二酸單酰輔酶a還原酶抑制劑（他汀類藥物） ，從而糾正脂類情況和預防非依賴性膽固醇血癥的主要心血管事件或心血管狀態。
  18. Hydroxyquinol triacetate was prepared from p - benzoquinone by 1, 4 - addition reaction with acetic anhydride and then 6, 7 - dihydroxy coumarin was synthesized from it by hydrolyze and cyclization in concentrated sulfuric acid. then 6, 7 - dimethoxy coumarin was synthesized by methylating from 6, 7 - dihydroxy coumarin with an overall yield of 74. 4 %. the procedure was practical. its structure was confirmed by ir and 1hnmr

    對苯醌與乙酸酐經1 ， 4 -加成生成1 ， 2 ， 4 -苯三酚三乙酸酯，然後與蘋果酸反應經水解、環合反應得6 ， 7 -二羥基香豆素，再經甲基化得到6 ， 7 -二甲氧基香豆素，總收率為74 . 4 % ，整個過程反應條件溫和，操作方便，適合工業生產的要求，對產品結構進行了ir和1hnmr表徵。
  19. The results show that : - bi is a good burning catalyst of double - base propellant and possesses an excellent ability to reduce pressure exponent

    結果表明， 2 ， 4 -二羥基苯甲酸鉍是雙基系推進劑良好燃燒催化劑，它能顯著提高了雙基推進劑的燃速，並降低壓強指數。
  20. A novel protein immobilization approach based on mercapto - pha sam for piezoelectric immunosensors has been proposed, which is formed by coupling mercaptoprorionic acid ( mpa ) to poly ( allylamine hydrochloride ) ( pha ) via 1 - ethyl - 3 - ( 3 - dimethylamino - propl ) carbodiimide ( edc ) and n - hydroxysuccinimide ( nhs ). after self - assembling a mercapto - pha sam on the gold electrode of the quartz crystal, the goat - anti - igm antibody is immobilized via cross - linking with glutaraldehyde. the detecting linear range of the piezoelectric immunosensor employing mercapto - pha sam is 0. 66 - 26. 4 ug / ml

    應用偶聯試劑碳二亞胺（ edc ）和n -羥基琥珀酰亞胺（ nhs ）使聚丙烯胺（ pha ）與巰基丙酸（ mpa ）偶合形成巰基化的聚丙烯胺，應用這一新方法，實現了羊抗人igm抗體分子的固定，並在0 . 66 26 . 4 g / ml范圍內對人血清免疫球蛋白igm進行了測定。
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