1. Hydroxyl has an extremely oxidizing nature.

2. The hydroxyl ion has a negative charge.

3. Both the free hydroxyl groups readily undergo esterification.

4. Variation of concentration of hydroxyl radical was computed.

5. Objective: To observe the influence of 23- hydroxyl betulinic acid(23-HBA) on the proliferative, migratory ability and morphological change of blood vessel endothelial cell line ECV-304.

6. A method for determining hydroxyl value of epoxy - containing polyester, namely acetyl chloride method is introduced.

7. The hydroxyl value of epoxy-containing polyester was determined by analyzing acetification principle and using acetyl chloride as acetifier and methylene chloride as solvent.

8. Twelve 20 - hydroxyl ester analogues of camptothecin were prepared and evaluated in vitro antitumor activity.

9. A hydroxyl ammonium sulfate ( HAS ) accelerated phosphating process has been studied.

10. A further reaction produces an additional hydroxyl ion to maintain the attack on the network.

11. Polyvalent Metal Hydroxyl Complexes.

12. The total phenol extract mainly contains hydroxyl mandelic, 3, 4-dihydroxy phenylethyl alcohol, salidroside and indicant compound and other derivatives with salidroside as the mother nucleus.

13. Hydroxyl magnetic microspheres were prepared with suspension polymerization and then activated withepichlorohydrin for immobilization of penicillin G acylase.

14. The production of extracellular hydroxyl radical(·OH) scavengers during lignocellulose degradation by white-rot fungus Lentinula edodes AX was studied.

15. Up to about 25 percent moisture content the whole of the water in wood is held in association with the hydroxyls in the cell walls.

16. The clays consist of silica tetrahedra and the octahedra contain magnesia surrounded by oxygen atoms and hydroxyl groups.

17. In a similar way, sheets of octahedra are formed from aluminium, oxygen and hydroxyl groups.

18. It consists of many glucose units, in each of which one of the hydroxyl groups has been replaced by an acetylamine group (CH3CONH).

19. X-ray photoelectron spectroscopy (XPS) indicated that the higher reaction activity of alkyl halide, the more alkyl substitution degree on hydroxyl group of chitosan.

20. A solvent resistant adhesive obtained by the crosslinking of a hydroxyl or urea or hydrocarbon terminated unsaturated polyurethane or polyurethane-urea polymer with a peroxide or a silicone hydride.

21. Nitrophenyl ferulate was synthesized in one step without the protection of the hydroxyl of ferulic acid in the presence of 1,3 dicyclohexylcarbodiimide(DCC) as the catalyst.

22. The production process of the cosmetics resisting skin ageing includes heating triterpene glycoside containing hydroxyl group to 80 deg. c for dissolving, and mixing with other cosmetics materials.

23. 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.

24. The reduction of the carbonyl group on haloperidol to hydroxyl group has almost no effect on its vasodilative activity.

25. However, modified AZT molecules lack a specific chemical group (a hydroxyl group) that would allow DNA replication to continue. This results in premature termination of DNA synthesis.

26. ObjectiveTo study the extraction and identification of total flavonoids from Eriocaulon buergerianum Koern and its Scavenging activity on hydroxyl free radical.

27. The present invention relates to a microgel latex with modified hydroxyl group and a property of stable storage.

28. Straight chain alcohols range from 10 to 33 with the hydroxyl group at every theoretically possible positions.

29. All K atoms coordinate with O atoms of phenolic hydroxyl group and nitro - group simultaneously.

30. Key compounds under review included vitamins, antioxidants , alpha - hydroxyl acids, moisturizers, pentapeptides and botanicals.

31. Starting from natural amino acid, diphenol having a phenolic hydroxyl group was synthesized. Using the diphenole as comonomer, a biodegradable epoxy resin in which contain amide group.

32. The surface physicochemical properties of hydroxyl terminated polybutadiene(HTPB)were studied by means of inverse gas chromatography(IGC).

33. The extracting conditions and effects of scavenging hydroxyl free radical of scallop(Patinopectem yessoensis) viscus polysaccharide were studied.

34. Synthesis of soluble fluorinated alkene with hydroxyl and preparation of fluorinated polyurethane coatings were described.

35. The crosslinked poly alcohol bead was as medical adsorbent because it has plenty of hydroxyl group.

36. Extraction and scavenging capacity of hydroxyl radical polysaccharide from Thunb were studied in this paper.

37. New research revealed how one class of drugs, the aminoglycosides, unleashes the hydroxyl radical cell death pathway by binding to its target inside the cell.

38. Under this condition, is it possible to produce hydroxyl or carboxyl on the surface of oxide?

39. The Gelidium amansii showed scavenging capacity to hydroxyl free radical generated by Fenton reaction and to superoxide anion generated by a pyrogallol autoxidation system.

40. Hydroxyl acrylic acid resin ( HAR ) with high solid and low viscosity anacrylic acid monomer in solution.

41. And if there is a hydroxyl in ortho position of carboxyl, the oxygen of hydroxyl and carboxyl in ligand are bound to Ti to form hexatomic cyclic compound.

42. The unsaturated vinyl group could be introduced into polymer by the reaction of isocyanate with hydroxyl group and the UV-curable carbon black dispersant could be obtained.

43. When the method is applied to hydroxyl number determination of HTPB initiated by H2O3, the hydroxyl number is two times as large as one obtained by existing classical acetylizing method.

44. Among them, alcohol, 2- acetone, ethyl acetate, ethanoic acid, 3- methyl -1- butylacohol, 3- hydroxyl -2- methyl ethyl ketone made up the main volatile constituent fermentation sausage.

45. The alkylation and acylation for hydroxyl group linked with nitrogen were accomplished to give N alkoxy and N acyloxy purpurin 18 imides, respectively.

46. Experiments showed that when using azide as the ammonia source to replace the hydroxyl into azido, then adding zinc powder can be reduced to the product, obtained 70% yield.

47. The changes of molecular weight, life under heat, acid value, hydroxyl value and chlorine content of lac resin during bleaching and de-chlorinating processes have been studied.

48. New unique modifiers of self - made hydroxyl acrylic resin ( emulsion ) and isocyanate terminal waterborne polyurethane were developed.

49. Through addition, acidification, closed ring and finally decompressed distillation,[] hydroxyl propane was made used propenol as initial material.

50. Three isoflavone compounds are synthesized with hydroxybenzene and phenylacetic acid in the improved method and three isoflavone derivatives are synthesized by modifying phenolic hydroxyl in A-ring.

51. It is shown that Bronsted acid sites are mainly formed from the hydroxyl groups in the main channels of mordenite.

52. Conclusion Phenolic hydroxyl group is necessary for Chalcone antioxidant; Hydroxyl and double bonds of the opened C ring can increase antioxidant activity.

53. Conclusion: The new monoterpene glycoside was identified as 4 " - hydroxyl - albiflorin. "

54. Antioxidant performance of extracts of seabuckthorn leaves was investigated with hydroxyl free radical system and superoxide anion free radical system.

55. Benzotriazole , o - hydroxyl benzophenone, salicylic acid and esters comprise several important types of ultraviolet - absorbents ( UAS ).

56. Its molecular structure is made up of a five member, unsaturated lactone ring with two hydroxyl groups.

57. The free hydroxyl ion is involved in a further reaction with the silica network.

58. The new surfactant, lauroyl citric acid ester, was synthesized by reaction hydroxyl group of citric acid with lauroyl chloride.

59. The theory of complex chemistry and construction chemistry was used to explain the mechanism of action between naphthalene hydroxyl oximino acid and wolframite.

60. Hazelnut shell brown pigment oxidation in vitro experiments showed that the pigment had scavenging effects on hydroxyl radical, superoxide anion radical and aliphatic radicals on lipid-per oxidation.

61. The esterified white carbon has been prepared by the reaction between the surface hydroxyl groups of white carbon and n-heptanol or n-octanol.

62. Experimental results indicate that hydroxyl radical is a feasible method to treat oceanic biologic contamination.

63. Antioxidant activity of extracts from Isatis Indigotica was investigated with the method of scavenging hydroxyl and superoxide anion free radical.

64. Objective:To observe the therapeutic and side effects of intravesical infusion with hydroxyl camptothecin in treatment of late stage and postoperative recurrent bladder cancers.

65. 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.

66. The phenylated silica gel has been prepared by the reaction between the surface hydroxyl groups of silica gel and phenyl trichlorosilane.

67. The surface lipids undergo oxidation, generating many compounds containing hydroxyl and carbonyl groups.

68. At last, using the hydroxyl radical system, superoxide radical system, the antioxidation activities of crocetin and crocetin dimethyl ester were studied and compared with BHT.

69. The hydroxyl radical in solution can efficiently kill Gymnodinium mukimotoi , a kind of red - tide microorganism.

70. Hydroxyl radical ( OH ) initiated photooxidation of toluene was carried out in a home - made smog chamber.

71. Indicators of biological mechanisms changes can certificate hydroxyl radical effect on the treatment of planktonic algae.

72. The position and sequence of benzoylation in tannin were studied by the analysis of benzoylated (-) epicatechin derivatives. The position of hydroxyl groups which react with isocya...

73. It's especially applicable for polymers with double bond or rubber formulation with hydroxyl fillers.

74. METHODS The hydroxyl groups were selectively acetylated and N atom was methylated respectively to prepare the derivatives of anisodamine.

75. Adopt in g the method to mensurate acid number, hydroxyl value and saponification value in processing lubricant oil determines the contents of additives in lubricants.

76. It was supposed that sodium phytate first reacted with amylopectin and hydroxyl groups of primary alcohol of C6 in starch molecular.

77. It will be more susceptible to attack by hydroxyl ion.

78. After hydrogenolysis of wheat alkali-oxygen lignin, the lignin has more hydroxyl[http:///hydroxyl.html], which can easily promote the reaction activity of synthesis of macromolecular material.

79. The reaction of catalpa oil, tung oil and hydroxyl - terminated polybutadiene gives alkyd resin with quick - drying property.

80. Objective To explore the scavenging effects of Cordyceps sinensis and mycelium of cultured Cordyceps sinensis on superoxide anion free radical(SAFR)and hydroxyl free radical( HFR).

81. As open-chain hydroxy aldehydes and hydroxyl ketenes, the monosaccharides are very reactive.

82. A series of aliphatic hyperbranched polyethers were synthesized by using the trimethylolpropane as core molecule, and their molecular structures were characterized by IR, hydroxyl value.

83. Diglycerol has a lower hydroxyl number than glycerol, which imparts a lower water binding ability upon the product.

84. Method The levels of dopamine and hydroxyl radical in the dialysates were examined with a microdialysis technique and a high pressure liquid chromatography in the parkinsonian rats.

85. The liquefied water production rate of the vitrain and fusain would be approximately equal and due to the partial reason, the hydroxyl strength of the vitrain and fusain would be approximately same.

86. The scavenging of melanin to hydroxyl free radicals was studied by fluorometry.

87. This was attributed to the loss of water of hydration as well as the condensation of structural hydroxyl groups with increasing temperature.

88. The synthetic methods of pyrocatechol were introduced. The main production method at present is phenol hydroxyl hydrogen peroxide method, and some advice was put forward.

89. And they detected hydroxyl HO that's left behind when a rock crystallizes from magma containing water.

90. The products are polyethers synthesized with new catalyst, characterized by low unsaturation, narrow molecular weight distribution, high activity and high primary hydroxyl content.

91. H atom of phenolic hydroxyl in the ligand was attractive to N atom forming intramolecular hydrogen bond, and a new six-membered ring was formed by the hydrogen bond connection.

92. Ethanol ( grain alcohol ) and methanol ( wood alcohol ) are the Best - known alcohols with one hydroxyl group.

93. Methylol groups react with the hydroxyl groups of the cellulose to form stable ether linkage.

94. The interaction between bilirubin and copper ions was studied by fluorescence method using 2,2'-bipyridyl as a hydroxyl radical trapper through the hydroxylation of the aromatic compound.

95. The presence of an equal concentration of hydrogen and hydroxyl group.

96. Selective protection of the asymmetric hydroxyl of 5-bromo-2-hydroxyphenylmethanol was investigated by method of fractional steps.

97. Alcohol: Organic compounds characterized by a hydroxyl group ( OH ) bonded to a carbon atom.

98. In this article, scavenging effects of ethanol extract from cattle liver on superoxide anion radical(O2-), hydroxyl radicals(·OH), and 1,1-diphenyl-2 -picrylhydrazyl(DPPH·) were studied.

99. Poly (amino acids) have good biological compatibility and degradability, and includes responsable active groups such as the hydroxyl, the carboxyl group, the amino group etc.

100. The synthetic process of a prepolymer based on benzoic acid modified hydroxyl alkyd resin and toluene diisocyanate (TDI) prepolymer and the coatings made from this prepolymer has been described.

101. The terminal hydroxyl groups of PEG-20M were esterified with acryloyl chloride with the result of introducing vinylic groups into the stationary phase molecule.

102. Another end for the hydroxyl and the carboxyl group,[http:///hydroxyl.html] has the water affinity.

103. In these methods, the halogenation of compounds containing hydroxyl group was particularly summarized.

104. And the IR analysis shows that silicone resin possesses hydroxyl end group.

105. Ring - opening of two types of N - tosyl aziridines with hydroxyl compounds has been studied.

106. This method was successfully applied to determine scavenging activities of Chrysanthemum hydroxyl radical.

107. A biologically important organic phenol, having two hydroxyl groups attached to the benzene ring.

108. The surface layer of polyethylene chain may generate Carbonyl, carboxylated, hydroxyl group of peers that ap - activity.

109. Glycolipids ( glycosyldiacylglycerols ) are diacylglycerols with a sugar attached to the unesterified hydroxyl group.

110. Hydroxyl ions induce saponification of cell membranes and cell death along with disruption of the extracellular matrix (liquifaction necrosis).

111. Acylation activity of hydroxyl groups in methyl cholicate has been determined by the use of methacryloyl chloride, methacryloyl anhydride and methacrylic acid as the acylating agents.