?hydroxyl

hydroxyl發(fā)音

英：[ha?'dr?ks?l]　　美：[ha?'dr?ks?l]

英：　　美：

hydroxyl中文意思翻譯

羥基, 氫氧根

hydroxyl詞形變化

形容詞: hydroxylic |

hydroxyl常見(jiàn)例句

1 、Under this conditon, is it possible to produce hydroxyl or carboxyl on the surface of oxide?───在這種情況下，能在氧化物表面產(chǎn)生羥基或羧基嗎？

2 、The LCST of all polymers was determined, and LCST will rise via increase of the OH content in hydroxyl PVME.───實(shí)驗還對各種產(chǎn)物做了LCST測定和1H-NMR分析，研究了PVME的羥基含量對LCST的影響。

3 、The results of colorimetric assays showed that these compounds effectively scavenged hydroxyl radical and super anion radical.───化學(xué)比色法的結果顯示這些化合物對羥自由基和超氧陰離子自由基有較好的清除作用。

4 、As open-chain hydroxy aldehydes and hydroxyl ketenes, the monosaccharides are very reactive.───以開(kāi)鏈的羥基醛和羥基酮形式 存在的單糖非?；顫?。

5 、It is seen that all secondary hydroxyl groups are on carbon atoms having four different substituents attached to them.───可見(jiàn)所有次級羥基都在一個(gè)碳原子上,這個(gè)碳原子有四個(gè)不同基團與它連接。

6 、The hydroxyl ion has a negative charge.───氫氧根離子有一個(gè)負電荷。

7 、The H2O2 also is a precursor of the highly reactive hydroxyl radical, which participates in wood degradation.───H2O2也是具有高度反應活性的羥基游離基的前體,并參與降解過(guò)程。

8 、Dihydroflavonol is another kind of flavone in which 2,3-position is a single bond and 3-position is substituted by hydroxyl.───二氫黃酮醇是指2,3位為單鍵,3位有一羥基取代的一類(lèi)黃酮化合物,研究表明此類(lèi)化合物很多都具有很好的抗氧化、保肝護肝、降血脂、抗腫瘤等藥理活性。

9 、The different DH of walnuts peptides has different ability to scavenge hydroxyl radicals.───不同水解度的蛋白多肽清除羥自由基能力不同,結果表明水解度5%時(shí),自由基清除率最高可達50.90%。

10 、The phenol hydroxyl group was considered to playa key role in increasing the differenc of interaction between the two isomers and the chiral stationary phase.───拆分過(guò)程為焓驅動(dòng)，酚羥基對提高二異構體與手性固定相之間的作用差異起關(guān)鍵作用。

11 、An anhydride formed by the removal of a water molecule from the hydroxyl and carboxyl radicals of hydroxy acids.───內酯一種通過(guò)從酸的羧基中除去一個(gè)水分子而形成的脫水物

12 、This kind of medicaments has stable, chloric nitrogen, go armour hydroxyl stable, nitro- fluorine is stable, stable etc.───此類(lèi)藥物有安定、氯氮 、去甲羥基安定、硝基安定、氟安定等。

13 、Then according to whether the structure of acidic groups (mainly phenolic hydroxyl group), divided into phenolic and non-phenolic.───再根據結構中是否有酸性基團（主要指酚羥基），分為酚性和非酚性。

14 、IC50 of grape polyphenols on scavenging DPPH radical, superoxide anion radical and hydroxyl radical were 1.───本文對葡萄多酚抗氧化活性進(jìn)行研究。

15 、In addition, still but as a result of drinkWineOr take drug (like hydroxyl chloroquine) and cause toxic.───此外，還可由于飲酒或服藥(如羥基氯喹)而誘發(fā)中毒。

16 、We choose flavonol compounds with hydroxyl substituents on B ring and isoflavone compounds with hydroxyl substituents on A ring to study their 13C-NMR properties .───我們選取黃酮醇類(lèi)化合物B環(huán)羥基取代和異黃酮類(lèi)化合物A環(huán)羥基取代這兩個(gè)系列黃酮類(lèi)化合物,對其核磁共振碳譜進(jìn)行理論計算。

17 、STUDY OF DEFLUORINE PROPERTIES OF POROUS HYDROXYL CALCIUM PHOSPHATE.───多孔羥基**酸鈣吸氟特性研究。

18 、PVPP has good appetency,It can remove the polyphenol efficiency through absorbing on surface by combination between the hydroxyl and carbonyl ?───PVPP通過(guò)酚羥基和羰基之間的氫鍵結合,進(jìn)行表面吸附,有效地去除多酚。

19 、The departing halide extracts a proton from the second water and the generated hydroxyl ligand reacts with the ethylene, while remaining in the coordination sphere of the metal.───分開(kāi)的鹵化物從第二個(gè)水分子得到一個(gè)質(zhì)子，同時(shí)產(chǎn)生的羥基配合體與乙烯反應，留在了金屬的配位區內。

20 、THF copolymerized GAP is synthesised by the azidation of hydroxyl THF-ECH copoyethers.───b．端羥基THF-ECH共聚醚疊氮化生成THF共聚型GAP粘合劑。

21 、THE CHANGE OF HYDROXYL IN HORNBLENDE AT CONFINING PRESSURE 3Kb AND TEMPERATURE 700?───圍壓3千巴、溫度700℃時(shí)角閃石羥基的變化

22 、Having only one hydroxyl group to react with acids.───一元酸的只有一個(gè)可與酸發(fā)生反應的氫原子團的。

23 、A method for determining hydroxyl value of epoxy-containing polyester,namely acetyl chloride method is introduced.───介紹了一種含環(huán)氧基聚酯的羥值測定方法,即**氯法。

24 、Any of various alcohols containing two hydroxyl groups.───雙羥基醇含有兩個(gè)羥基團的醇

25 、The extractants are introduced by five parts,such as monobasic alcohol,diol,mixed alcohol,hydroxyl amine and others.───把提硼的萃取劑分為一元醇、二元醇、混合醇、羥基胺和其他類(lèi)5部分加以敘述。

26 、A further reaction produces an additional hydroxyl ion to maintain the attack on the network.───再進(jìn)一步反應又形成一個(gè)外加的氫氧離子，它又繼續侵蝕網(wǎng)絡(luò )。

27 、Presents the development in decontaminating indoor chemical pollution.Explores a new method to decontaminate indoor air pollution with hydroxyl radical.───摘要介紹了消除室內空氣中化學(xué)污染的凈化技術(shù)的研究進(jìn)展，探討了一種利用羥基自由基消除室內空氣污染的高級氧化方法。

28 、Hydroxyl radical (OH) initiated photooxidation of toluene was carried out in a home-made smog chamber.───在煙霧腔內進(jìn)行了羥基自由基啟動(dòng)的甲苯光氧化生成二次有機氣溶膠的實(shí)驗。

29 、The effects of content of fluororesin,hydroxyl numbr of acrylic acid resin,content of curing agent and kinds of pigment on propert of top paint are discussed.───探討了氟樹(shù)脂用量,丙烯酸樹(shù)脂羥值,固化劑的用量和顏料種類(lèi)對面漆性能的影響。

30 、Hydroxyl has an extremely oxidizing nature.───氫氧基具有極強的氧化特性。

31 、Ethylene gycol: thick liquid diol (a compound containing two hydroxyl groups) C2H6O2used especially as an antifreeze and in making polyester fibers.───乙二醇:較濃的液體二醇(包含兩個(gè)羥基的化合物)C2H6O2,通常用作防凍劑和制造聚酯纖維。

32 、In the liquid state. water molecules are highly associated because of hydrogen bonding.The hydroxyl and ether groups in glycols form similar associations with water molecules.───在液體狀態(tài). 水分子是高度伴生的由于氫接合.羥基和以太小組在甘醇形成相似的協(xié)會(huì )與水分子.

33 、Another end for the hydroxyl and the carboxyl group, has the water affinity.───另一端為羥基和羧基，具有親水性。

34 、MDMA abuse commonly occurs in combination with ethanol,and ethanol can increase hydroxyl radicals formation and serotonin neuronal damage.───MDMA常和乙醇合并濫用。乙醇可促使羥基自由基增多,并使5-羥色胺神經(jīng)元損傷加重。

35 、Jiang Qi-bin,Jia De-min,Yang Jun.Modification in situ of EPDM filled with carbon black by unsaturated hydroxyl fatty acid[J].China Elastomerics,2004,14 (2):25-29.───[5]姜其斌,賈德民,楊軍.不飽和羥基脂肪酸原位改性炭黑補強三元乙丙橡膠的性能[J].彈性體,2004,14(2):25-29.

36 、And we've got devices that can sniff out hydroxyl polybutadiene propellant deployed at all likely exit points.─── 我們有可以探測到羥基聚丁二烯推進(jìn)劑 的設備 并部署在所有可能的出境點(diǎn)

37 、NMR techniques were used to investigate the stereo configuration and conformation of the hydroxyl mesocyclic diamines and their derivatives in aqueous solution.───利用二維核磁共振技術(shù)對一類(lèi)新的含羥基中環(huán)二胺及其衍生物在水溶液中的構型和構象進(jìn)行了較為詳盡的研究。

38 、The analysis of hydroxyl radicals in biological samples by ESR,HPLC and chemiluminescence method have been reviewed in this paper. 41 references were given.───本文著(zhù)重對電子自旋捕集法、高效液相色譜法和化學(xué)發(fā)光法在羥自由基檢測中的應用情況進(jìn)行了評述，引用文獻41篇。

39 、Chitosan is one of the most abundant natural polymers, this biopolymer has useful functional groups such as hydroxyl and amine, so it can interact with metal ions.───摘要殼聚糖是一種天然高分子，分子中含有大量的氨基和羥基，對金屬離子有很好的吸附能力。

40 、Group H was infused with 6% Hydroxyl starch(HES) at a rate of 15 ml/kg before induction.───H組:誘導后30 min內輸入羥乙基淀粉(HES)15 ml/kg。

41 、Compared with polyethylene as a standard sample,GAP has higher surface free energy because there are many hydroxyl groups and azide group in the surface of the GAP molecule.───與聚乙烯相比,GAP的總表面的自由能較高,這主要是因為GAP表面含有羥基和疊氮基團。

42 、It is maigre that to hydroxyl benzoic acid Yi Bingfu adds up to ester natrium and benzoic acid natrium?───對羥基苯甲酸乙丙復合酯鈉和苯甲酸鈉是不是素食？

43 、It will be more susceptible to attack by hydroxyl ion.───它更容易被氫氧根離子所作用。

44 、The new photometry for determination of hydroxyl radocals by using the reaction between the mixed rare earths and trace H 2O 2 has been established in this paper.───利用混合稀土與微量過(guò)氧化氫催化氧化二苯基碳酰肼,建立了萃取-催化氧化光度法測定過(guò)氧化氫的羥基自由基的新方法。

45 、The obtained material showed good affect to scavenging hydroxyl radials.───且該提取物對羥自由基有良好的清除效果。

46 、OBJECTIVE To investigate and compare the scavenging effect to hydroxyl radical of different extracts from the seeds of Hovenia acerba Lindl.───摘要目的比較枳椇子不同提取部位對羥自由基的清除作用。

47 、The amino resin will cross-link not only the alkyd but the hydroxyl portion of the vinyl terpolymer.───氨基樹(shù)脂不僅能和多元醇酸交聯(lián)，而且和乙烯三元共聚物中的羥基部分反應。

48 、Hydroxyl third base amylum aether has strong thicken and stability,mainly be applied in ice cream,jam,jelly,nooning meat,soup material,drink and milk product.───應用范圍： 羥丙基淀粉醚具有超強的增稠、穩定能力，主要用于冰淇淋、果醬、果凍、午餐肉、湯料及奶制品中。

49 、Containing the hydroxyl group.───氫氧化物的含氫氧基化合物的

50 、Ethanol (grain alcohol) and methanol ( wood alcohol ) are the Best-known alcohols with one hydroxyl group.───乙醇(酒精)和甲醇(木醇)是最有名的醇類(lèi),含有一個(gè)羥基。

51 、METHODS The hydroxyl groups of magnolol were protected using ketol reaction and the products were purified by recrystallization from hexane.───方法將厚樸酚兩羥基用縮酮保護,再用正己烷重結晶分離純化。

52 、Chitosan is one of the most abundant natural polymers,This biopolymer has useful functional groups such as hydroxyl and amine,so it can interact with metal ions.───殼聚糖是一種天然高分子,分子中含有大量的氨基和羥基,對金屬離子有很好的吸附能力。

53 、But urushiol has a poor resistance to alkali because phenol hydroxyl of urushiol shows weak acidity.───但是,由于漆酚的酚羥基顯弱酸性,使得漆酚耐堿性較差;

54 、The hydroxyl groups can be changed into esters, ethers, acetals and ketals, etc.───最常用的羥基保護基可歸納為三類(lèi)：酯類(lèi)、醚類(lèi)和縮醛或縮酮類(lèi)。

55 、Polyvalent Metal Hydroxyl Complexes.───多價(jià)金屬羥基絡(luò )合物;

56 、The mechanism responsible for the neurotoxicitg of MDMA is probably associated with hydroxyl radical formation.───其神經(jīng)毒性作用機制可能和羥基自由基的形成有關(guān)。

57 、The silanol groups then condense with oxide or hydroxyl groups on the filler surface (see Figure 1).───接著(zhù)硅醇基團與填料表面的氧化物或者羥基發(fā)生縮合反應（見(jiàn)圖1）。

58 、It consists of many glucose units, in each of which one of the hydroxyl groups has been replaced by an acetylamine group (CH3CONH).───包括許多的葡萄糖單元，每個(gè)單元的羥基都被**基取代。

59 、The mono-component phthalate agent method is not stable for determining hydroxyl value of wood solution.───在使用單組分?；噭y定木材溶液羥基值時(shí),數據穩定性差。

60 、Halogen radicals produced by the reaction of hydroxyl radicals with halides, such as HX, may serve as terminators for the chain reaction.───鹵素自由基是由羥基自由基與鹵化物如HX反應而產(chǎn)生的,它可被用作連鎖反應的終止劑。

61 、As substrate is reintroduced neutrophil activity may heighten increasing production of damaging superoxide and hydroxyl radicals.───再次導入酶解物，嗜中性細胞活動(dòng)增強，增加破壞性超氧游離基和羥基的生產(chǎn)。

62 、The scavenger activities of methyl salicylate towards the hydroxyl radical and its reaction mechanism were studied using pulse radiolytic technique and general test method.───利用脈沖輻解技術(shù)研究了水楊酸甲酯清除羥基自由基反應的瞬態(tài)吸收譜,測定了水楊酸甲酯與羥基自由基反應的表觀(guān)速率常數。

63 、Title： Study of hydroxyl content of omphacite in UHP-eclogite from the main hole of Chinese Continental Scientific Drilling Project.───關(guān)鍵詞：綠輝石;榴輝巖;結構水含量;中國大陸科學(xué)鉆探工程

64 、In these methods, the halogenation of compounds containing hydroxyl group was particularly summarized.───在這些方法中，側重總結了含有羥基官能團的有機化合物。

65 、Both the free hydroxyl groups readily undergo esterification.───兩個(gè)自由羥基，都容易酯化。

66 、The hydroxyl silicate was surface-modified and dispersed in water, and mixed with water-soluble lubricant by different proportion.───將羥基硅酸鹽通過(guò)表面修飾分散在水中,并與不同比例的水溶性潤滑劑進(jìn)行復配。

67 、This paper mainly introduces the inhibition function of manganese and manganese porphyrins to superoxide and hydroxyl radicals, lipid peroxidation.───介紹了錳及錳卟啉對超氧化物、羥化自由基、脂質(zhì)過(guò)氧化等自由基的抑制作用,并初步討論了它們的作用機理。

68 、Abstract : Recent advances is enzymatic deprotection reactions of amino groups, carboxyl groups, thiol groups and hydroxyl groups are reviewed.───摘要 ： 系統地介紹和評述了近年來(lái)氨基、羧基、巰基和羥基等到基團的酶催化脫保護方法的進(jìn)展。

69 、In order to make the wool fabric obtain better smooth feel,the hydroxyl silicone oil was carried out to finish wool fabric.───為使羊毛織物獲得較好的平滑手感,采用羥基硅油平滑劑對羊毛織物進(jìn)行平滑整理并對整理工藝進(jìn)行了探討。

70 、The effects of hydroxyl MWNTs and carboxyl MWNTs on efficiency of enthalpy were higher than that of MWNTs with the same contents.───當多壁碳納米管的含量相同時(shí)，含有官能團化多壁碳納米管的正十八烷的熱焓效率低于常規多壁碳納米管體系。

71 、It is based upon a naturally occurring enzyme called urease that essentially reverses the urea cycle by breaking down urea into metabolites that include ammonia and hydroxyl ions.───它是根據自然產(chǎn)生的尿素酶，基本上扭轉了尿素循環(huán)打破尿素成氨的代謝物，包括羥基離子。

72 、The SG copolymer can react efficiently with the amide and carboxyl group of PA6 as well as the hydroxyl group of PPO in blending process, resulting into graft copolymer.───SG共聚物能夠有效地與尼龍6分子鏈端的胺基、羧基和聚苯醚分子鏈端的羥基發(fā)生反應，生成接枝共聚物。

73 、The surface physicochemical properties of hydroxyl terminated polybutadiene (HTPB) were studied by means of inverse gas chromatography (IGC).───摘要采用氣相反相色譜技術(shù)(IGC)研究了端羥基聚丁二烯(HTPB)粘合劑的表面物理化學(xué)性質(zhì)。

74 、Containing two hydroxyl radicals.───二羥基的包含兩個(gè)羥基的

75 、A hydroxyl ammonium sulfate (HAS) accelerated phosphating process has been studied.───對內含羥胺促進(jìn)劑的**化工藝進(jìn)行了研究。

76 、It was shown that the carbon functional group contained a very small amount of graphitized carbon and some ether or hydroxyl group.───含氧官能團中無(wú)機氧含量較低,有機氧含量相對較高.隨著(zhù)燃燒的進(jìn)行,顆粒表面碳、氧官能團呈現不同的變化趨勢.

77 、Abstract : Ring-opening of two types of N-tosyl aziridines with hydroxyl compounds has been studied.───摘要 ： 本文研究了羥基化合物對兩種類(lèi)型N-對甲苯磺?；s環(huán)丙烷的開(kāi)環(huán)反應。

78 、The scavenging of melanin to hydroxyl free radicals was studied by fluorometry.───利用熒光光度分析法研究了黑色素對羥基自由基的清除活性。

79 、Diglycerol has a lower hydroxyl number than glycerol, which imparts a lower water binding ability upon the product.───雙甘油分子的羥基密集度要比甘油低，這相對降低了結合水的能力。

80 、The interaction between carboxyl anions in gelatin chains and MMT is strong.The hydroxyl groups are the interactive sites on MMT.───明膠分子鏈上的羧基負離子可以和蒙脫土產(chǎn)生較強的相互作用，蒙脫土上的羥基是與明膠相互作用的反應位點(diǎn)。

81 、The hydroxyl and carboxyl,belonging to auxochromic groups,were oxidized into the carbonyl and ester groups.───[方法]通過(guò)對刺槐木材變色前后丙酮抽出物的定性分析,得出變色前后丙酮抽出物的主要成分,進(jìn)行對比分析,初步得出抽出物對誘發(fā)變色的作用。

化學(xué)oh是什么意思

OH是化學(xué)中的一個(gè)術(shù)語(yǔ)，指羥基基團（hydroxyl group），這是一個(gè)由氫和氧組成的一元醇官能團。當一個(gè)物質(zhì)中含有OH官能團時(shí)，我們稱(chēng)其為“含羥基的物質(zhì)”。OH官能團在許多有機化合物中出現，比如醇、酚等，這些物質(zhì)通常具有一些特殊的物理和化學(xué)性質(zhì)。

OH官能團在有機化學(xué)中具有很重要的作用。首先，它可以使物質(zhì)變得更加親水，因為氧和氫的電性差異使OH官能團帶有極性。另外，OH官能團的羥基可以與其他化合物發(fā)生酸堿反應，這使得這一官能團在很多生物和化學(xué)過(guò)程中扮演了重要的角色。

OH官能團具有很多應用價(jià)值。比如，在有機合成中，人們可以通過(guò)加氫反應、氧化反應等方法引入OH官能團，從而合成含羥基的物質(zhì)。有些人工合成的藥物中也含有OH官能團，例如阿司匹林。此外，OH官能團還可以被用于制造一些化學(xué)品和染料。

“羥值”是代表什麼意思

羥值(Hydroxyl value)

在膠黏劑的性能中,只有環(huán)氧樹(shù)脂、聚脂多元醇與聚醚多元醇及聚氨脂膠黏劑等對羥值有要求.

環(huán)氧樹(shù)脂羥值是表示100g環(huán)氧樹(shù)脂中所含的氫氧基的摩爾數.而羥基值表示含有1mol羥基的環(huán)氧樹(shù)脂質(zhì)量克數.二者之間的關(guān)系為:羥基值=100/羥基.羥值的測試都是酸酐反應做基礎的,以被消耗的酸酐量測試出羥基含量.對于環(huán)氧樹(shù)脂而言,由于環(huán)氧基的干擾,使羥基的測試復雜化,采用通常的**化法是達不到目的的.目前采用的一種是直接測試環(huán)氧樹(shù)脂的羥基含量;另一種是使環(huán)氧基開(kāi)環(huán)形成羥基,并進(jìn)一步測出羥基含量總和.對高分子量環(huán)氧樹(shù)脂如果知道其羥值大小,就可以計算出它的分子量大小,羥值高,分子量大;反之則小.

在聚氨脂膠黏劑中多以聚酯型聚氨酯居多.在聚酯多元醇的合成過(guò)程中,利用羥值與酸值的測試來(lái)監控合成反應程度，而且又是檢驗樹(shù)脂分子量是否符合產(chǎn)品出廠(chǎng)要求的有效方法.另外,在聚氨酯膠黏劑生產(chǎn)時(shí),羥值與酸值大小,又是異氰酸酯加入改性的重要依據.羥值是聚合物羥基含量的量度,它可以直接反映出聚合物的分子量的大小.同一原料生產(chǎn)的聚酯多元醇,其羥值不同,用途也不一.羥值是衡量它的一個(gè)重要指標.對聚酯多元醇,不飽和聚酯樹(shù)脂與聚醚多元醇,羥值的定義是每克試樣中羥基含量相當的氫氧化鉀毫克數(mgKOH/g)即為羥值.