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The result showed all the characteristic absorption peaks of hydroxyl-naphthaoquinone in the FT-IR spectrum of the product. The constituents of the product were determined by GC-MS to be: 1, 4-naphthaoquinone, 5-hydroxy-1,4-naphthaoquinone and 7-methoxy-1-tetralone, and the content of juglone in the product was 96.42%. The structure of juglone in the product was confirmed by 1H NMR. This study offered a simple and effective method to get high purity juglone from bark of J. mandshurica.
分别用FT-IR表征了产品的有机官能团、用GC-MS分析了产品的化学组成和产品中胡桃醌的相对含量(GC含量达96.42%)、通过1H NMR确认了产品的胡桃醌结构本研究提供了一种从核桃揪树皮中简便快捷地提取制得高纯度的胡桃醌产品的方法。
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The geometry of these particles was analyzed by both particle size analysis , TEM and FT-IR , and was found to be perfecty spherical , and sized about 50 nm that PS core was well covered by PPy shell . The core-shell latices become unstable when the amount of PPy increased .
就PS-PPy颗粒的结构形态而言,由微粒径分析及TEM分析得知其粒径约50nm左右,制备的核壳颗粒呈均匀的圆球状,并由FT-IR光谱分析证实了PPy壳将PS内核完全包覆,只是当PPy壳的相对量增加时会对核壳乳液的稳定性造成负面影响。
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The chemical structure and mesomorphic properties of this series of compounds were characterized by FT-IR, MS, 1H NMR, polarizing optical microscopy and DSC techniques.
利用FT-IR、MS、1H NMR、POM、DSC 表证了所得化合物的结构和介晶性,并选择几种双液晶基元液晶测定了它们的机械黏度和在主体液晶中的螺旋扭曲力
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By means of molecular designing, a series of sodium branched-alkyl benzene sulfonates weresynthesized through seven process, involving Frieded-Crafts reaction, Grignard reaction, sulfonationand neutralization. Those isomers have similar structure, carbons of same quantity, but the position ofalkylaryl dissimilarity. Liner fat acid, metaxylene and halogenated hydrocarbon of different carbonnumber were used as the starting materials. Optimum processing condition was confirmed consideringinfluence of a series of reaction factors such as feed proportioning, quantity of catalysts, quantitysolvent, reaction time, temperature and pressure. Eight kinds of isomers of sodium hexadecylxylolsulfonates were finally synthesized, and characterized by FT-IR.
本文通过分子设计,以不同碳数直链脂肪酸、间二甲苯以及不同碳数的卤代烷为原料,经酰基化、格氏反应、加氢还原、磺化及中和等反应,合成了结构相似、烷烃链碳数一定、芳基在烷烃链不同位置的烷基芳基磺酸盐同分异构体;并考察了原料配比、催化剂用量、反应时间、反应温度、溶剂用量、反应压力等一系列因素对各反应的影响,进而确定最佳工艺条件,最终合成出十六烷基二甲苯磺酸钠的八种同分异构体,利用 FT-IR 对产物结构进行了分析。
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Discussed the micromeritic characteristies of CS extracted powder and the FT-207 powder, inspected the excipient proportion, the wettibility, the drying temperature factors through prescription screening as well as the orthogonal test to determine granulation process.
考察了CS浸膏粉和FT-207的粉体学性质,通过处方筛选以及正交试验考察了辅料配比、润湿度、烘干温度3个因素,确定了制粒的工艺路线。
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Let f: C→C be a contractive mapping, T1, T2,…, T be a finite family of nonexpansive mappings of C into itself such that the set FT(subscript i of common fixed points of T1, T2,…, T is nonempty.
设f:G→C是一压缩映象。T1,T2,…,T:C→G是一有限簇非扩张映象且FT
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A series of copolymers with L-lactideand 3-methyl-morpholine-2,5-dioneweresynthesized using stannous octoate as catalyst,and characterized with FT-IR,~1HNMR and viscosity determina-tion.
以辛酸亚锡为催化剂,合成了3-甲基吗啉-2.5-二酮与 L-丙交酯的共聚物,并用 FT-IR、~1HNMR、粘度测定法对共聚物进行了表征。
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The microstructure was characterized by FT-IR and SEM. The results show modified sepiolite is an organical sepiolite nano-fiber.
利用SEM,FT—IR等手段观察其形貌,结果表明海泡石原矿经过处理后可制得有机海泡石纳米纤维。
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From FT-IR we think that the hydrogen bond between the polar oxygenous group on the thin film surface treated with plasma and acetone molecules would enlarge the distance between the carbon black particles, resulting in the addition of the electrical resistance, then the response behavior of the thin film to acetone was improved greatly.
我们通过FT-IR研究认为,等离子体处理后,薄膜表面引进的极性含氧基团与丙酮分子之间氢键的形成会增大炭黑粒子之间的距离,导致了薄膜电阻的极大增加,使薄膜对丙酮蒸气的响应得到很大改善。
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Characteristics of bulk and silica supported copper salt of 12-phosphomolybdic acid were investigated using TG-DTA, FT-IR, XRD, and BET surface area measurement techniques and compared with the results obtained with 12- phosphomolybdic acid.
采用TG-DTA、 FT-IR、 XRD、 BET比表面积等方法,研究了体相及SiO2负载磷钼杂多酸铜盐的性质,并与磷钼酸作了对比。
- 相关中文对照歌词
- Ft. Worth Blues
- 40 Ft
- Ten Ft Tall
- At 30,000 Ft.
- 20000 Ft
- 20000 Ft
- 400 Ft. Robots
- 700 Ft. Ceiling
- 推荐网络例句
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The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.
采用不同浓度K2CrO4(0,0.4,0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗,测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。
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By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.
通过分析数学形态学在图像中的理论基础,研究二值图像的形态分析算法,探讨最小结构元素的两种基本形态:膨胀和腐蚀;分析了数学形态学复杂算法的基本原理,把数学形态学的部分并行处理理念引入到家实际应用中。
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Have a good policy environment, real estate, secondary and tertiary markets can develop more rapidly and improved.
有一个良好的政策环境,房地产,二级和三级市场的发展更加迅速改善。