查询词典 hydroxy-acetophenone

To correct the variation resulting from exposure condition, an aluminum stepwedge was exposed simultaneously. By referring the image of aluminum stepwedge on each radiograph the equivalent aluminum thickness and corrected gray level intensity of the ROIs could be calculated as indicators of alveolar bone density. Nineteen specimens containing different amounts of hydroxy-phosphorite were radiographed.

用计算机测量定位投照的直接数字化牙片上感兴趣区(region of interest， ROI)的灰度，拍片时将一个铝制梯级同时曝光，根据已知的铝梯灰度和厚度推算ROI区灰度所对应的等效铝厚度和校正灰度来反映骨密度，从而校正由于投照条件差异造成的灰度误差。

Oxygen plays critical roles in lubrication mechanism. Oxygen affects the lubrication mechanism of additives all along, whether in sulfurized vegetable oil fatty acids containing active element or not in hydroxy vegetable oil fatty acids with pure carbon, hydrogen and oxygen not containing active element.

氧元素在润滑机理中有着关键作用，无论在含活性元素的硫化植物油脂肪酸，还是在不含活性元素的纯碳、氢和氧的羟基植物油脂肪酸中，氧元素始终影响着添加剂的润滑性。

It is suggested that the scission is preceded by an aldol condensation, followed by a phenolic hydroxyl participation with scission of the C---C in the β-hydroxy-ketone formed.

经推论这一断键反应首先是发生羟醛缩合，继以在酚羟基参与下引发烷羰C－C键断裂的；还应指出，也是由于对位羟基的参与，这些烷基对羟苯基酮不形成它们的乙醇缩酮。

OBJECTIVE To study the effects of aloe-emodin and emodin on scavenging superoxide anion free radical O(superscript – subscript 2 and hydroxy free radical.

目的：研究芦荟大黄素和芦荟素对超氧阴离子自由基O(上标–下标 2、羟自由基的清除作用。

IV . Content and Capacity: 2,400,000t/a stamping coke, 30,0000 t/a coal tar, 10,0000 t/a methanol, 10,0000 t/a phenol anhydride, 5,0000 t/a Needle coke, 10,0000 t/a Hydrogenation of anthracene oil, 10,0000 t/a Hydrogenation of Crude benzene, 2,0000t/a β-naphthol, 1,0000t/a 2-hydroxy-3-naphthaoic acid , 2,0000t/a UHP ultra-high power electrode.

四、项目建设内容及规模：240万吨/年捣固焦炉及化产回收、30万吨/年焦油、10万吨/年甲醇、10万吨/年苯酐、5万吨/年针状焦、10万吨/年蒽油加氢、10万吨/年粗笨加氢、2万吨/年二萘酚、1万吨/年2.3酸、2万吨/年 UHP 超高功率电极。

Methods The pyrogllol auto-oxidation was adopted to produce superoxide anion O(superscript - subscript 2; the system H2O2/Fe(superscript 2+) was used to produce hydroxy radical through Fenton reaction; and spectrophotometry was used to detect the clearing functions of drugs with different concentrations against O(superscript - subscript 2) and OH.

采用邻苯三酚自氧化法产生超氧阴离子自由基O(上标-下标 2，采用H2O2/Fe(上标 2+)体系通过Fenton反应产生羟自由基，用分光光度法分别测定不同浓度的药物对O(上标-下标 2)是和OH的清除作用。

The constant-volume combustion energy of 2-hydroxy-3,5-dinitropyridine lead salt(2HDNPPb) was determined by a precision rotating bomb calorimeter at 298.15K,which is equal to(-7 265.08±3.97)J/g.

利用精密转动弹热量计测定了2-羟基-3，5-二硝基吡啶铅盐(2HDNPPb)的燃烧能ΔcU，其结果为(-7 265.08±3.97)J/g。

To dye the different types of fibers by the same dye, universal dyes based on naphthalene ring system are prepared by the diazo coupling reaction of 7-acetamide-4-hydroxy-2-oaphtialene-β-(N,N-dimethylaminoethyl)solfonamide and m-aminobenzene-β-hydroxyethyl sulfone sulfunate.

为了实现用同一支染料对不同类型的纤维进行染色的目的，通过间氨基苯基－β-羟乙基砜硫酸酯与7-乙酰氨基－4-羟基－2-萘－β磺酰胺的重氮化偶合反应合成了含萘环的通用染料，其结构通过质谱分析进行了表征。

The preparation and application of reactive antibacterial agents, such as silicone quaternary ammonium salt, halogenated hydroxy diphenyl ether, chitosan, halamine and other kinds, etc, were introduced in detail based on the art and development trend both here and abroad.

文章针对现有反应性抗菌整理剂的国内外发展现状和趋势，详细介绍了有机硅季铵盐、卤代羟基二苯醚、壳聚糖、卤胺及其他类等反应性抗菌整理剂的制备过程和应用情况，并对其应用前景作了展望。

The environmental black direct dye stuff without carcinogensis was prepared by 4,4'-diamino-dibenzidine-2-sulfonicacid,1-hydroxy-7-aminonaphthalene-3,6-dusuifonicacid,m-benzoic-diamine and aniline.

以4，4'-二氨基-二苯胺-2-磺酸代替苯胺，与1-羟基-7-氨基-3，6-二萘磺酸、间苯二胺、苯胺等合成无致癌作用的环保型黑色直接染料。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。