甲醇
- 与 甲醇 相关的网络例句 [注:此内容来源于网络,仅供参考]
-
Fifteen novel 1,4-naphthoquinones, rhinacanthin-A -D, rhinacanone-A -K and two new biphenyl compounds, rhinacanim-A,-B together with eleven known compounds have been isolated and characterized from the root of Rhinacanthus nasutus Kurz.
中文摘要从白鹤灵芝草的根部甲醇抽取物中经过各种层析分离纯化后共得到15种新的1,4-naphthoquinone类化合物,分别命名为Rhinacanthin-A至-D,Rhinacanone-A至-K及二种新的Biphenyl化合物,Rhinacanim-A,-B和11种已知化合物。
-
We have investigated on the chemical constituents of Nepeta partite collected from Gansu Zhuanglang, and twenty eight compounds were isolated from the methanol extraction of this species by chromatography techniques. Twenty five compounds were identified by means of chemical and spectra methods IR, FABMS, EI-MS,〓, DEPT, and 2D NMR), among which four compounds were new as isopimar-15-en-3β, 8β, 20-triol; phenylethanal-3-O-(2'-glycerin)-5-O-β-D-glucopyranoside; 3-O-linolenoylglyceryl-6'-O-(α-D-galactopyranosyl)-β-D-galactopyranoside; ethyl rosemarinate.
我们对采自甘肃庄浪的康藏荆芥进行了化学成分的研究,利用层析手段从该植物的甲醇浸膏中分离出二十八个化合物,经化学方法和波谱技术(红外,质谱,一维和二维核磁共振谱)鉴定了二十五个化合物的结构,其中四个为新的化合物,它们分别是:异海松-15-烯-3β,8β,20-三醇;苯乙醇-3-O-(2'-甘油基)-5-O-β-D-吡喃葡萄糖甙;3-O-亚麻酰基甘油-6'-0--β-D-吡喃半乳糖甙;迷迭香酸乙酯。
-
Nanofibers were novelly applied to the enrichment of VB12 based on the instinct of adsorption due to their large surface areas.
图4有关甲醇比例50%以后缺乏一个数据点如75%,作者怎么知道曲线的后面是平台?4。图5的横坐标体积单位应为uL,而非mL.5。
-
Methods used in other high-performance liquid chromatography for determination of active ingredients, octadecyl silane for the bonded silica filler; methanol - water (55:45) as mobile phase, detection at 254nm.
采用高效液相色谱法对方中有效成分进行含量测定,用十八烷基硅烷键合硅胶为填充剂;甲醇-水(55:45)为流动相,检测波长为254nm。
-
Results61 peaks were separated and 16 constituents were identified, which were composed of about 96.46% of the total essential oil.ConclusionThe main constituents are allyl phenoxyacetate(80.17%), eudesma-4(14),11-diene(6.83%), 2,3-dihydro-3-methyl-3-benzofuran-methanol(2.94%), limonene(1.63%). The essential oil in Oenanthe javanica DC from Dali, Yunnan can be used in the food service industry and the cosmetic industry as spices.
水芹挥发油中的主要成分为苯氧乙酸烯丙酯(80.17%)、桉叶-4(14),11-二烯(6.83%)、2,3-二氢-3-甲基-3-苯并呋喃甲醇(2.94%)、柠檬烯(1.63%),云南大理产水芹挥发油中萜类化合物及其衍生物含量在13%以上,苯氧乙酸烯丙酯含量高,可用作食品工业和化妆品工业的香料。
-
ConclusionThe main constituents are allyl phenoxyacetate(80.17%), eudesma-4(14),11-diene(6.83%), 2,3-dihydro-3-methyl-3-benzofuran-methanol(2.94%), limonene(1.63%). The essential oil in Oenanthe javanica DC from Dali, Yunnan can be used in the food service industry and the cosmetic industry as spices.
水芹挥发油中的主要成分为苯氧乙酸烯丙酯(80.17%)、桉叶-4(14),11-二烯(6.83%)、2,3-二氢-3-甲基-3-苯并呋喃甲醇(2.94%)、柠檬烯(1.63%),云南大理产水芹挥发油中萜类化合物及其衍生物含量在13%以上,苯氧乙酸烯丙酯含量高,可用作食品工业和化妆品工业的香料。
-
In this paper, we designed and synthesized a molecule of compound 1, 2-(benzooxazol-2-yl)-5-4-(3-(benzothiazol-2-yl) phenylamino-6--1,3,5-triazin-2-ylaminophenol, which can only assembled into an organogel upon a short irradiation with ultrasound in toluene-methanol mixed solvent. DSC, XRD and IR were used to detect the properties and mechanisms of the organogel.
本论文中,我们设计合成了一个有机小分子化合物1,4-氨基(2-羟基苯基)苯并噁唑3-氨基苯基苯并噻唑二辛基胺缩三聚氯嗪,研究发现,在甲苯/甲醇=1:2的混合溶剂中,只有利用超声才能使之形成凝胶,加热冷却的方法不能形成凝胶,而形成针状结晶。
-
Methods Rhizoma Gastrodiae, Pellis Ovis, and Calculus Bovis Sativus in Tianhuang Houzao powder were identified by TLC. The content of Gastrodin in the powder was determined by HPLC. The HPLC condition was as follows: column was Phenomenex C18 (4.60 mm×250 mm, 4 m), the mobile phase consisted of methanol-0.05% phosphoric acid (3:97), the UV detection wavelength was at 220 nm, the flow rate was 1.0 ml/min with column temperature at 25℃.
用薄层色语法鉴别天黄猴枣散中天麻、猴枣、体外培育牛黄;用高效液相色谱法对制剂中天麻素进行定量分析,Phenomenex C18 (4.60 mm×250 mm, 4 m)色谱柱,流动相为甲醇-0.05%磷酸溶液(3:97);检测波长220 nm,流速1.0 ml/min,柱温25 ℃。
-
The synthesis method of the invention is as follows: first, 5-amino-2-(p-aminophenyl)- benzoxazole and aliphatic diacid are respectively recrystallized; NMP is distilled; solubilizer is dried; second, in an atmosphere of nitrogen, after Py and NMP are mixed evenly and added to a sealed reactor, the solubilizer is added into the reactor, followed by the 5-amino-2-(p-aminophenyl)- benzoxazole, then the mixture in the reactor is stirred; second, in an atmosphere of nitrogen, the mixture in the second step is stirred and heated to 50-150 DEG C, then the aliphatic diacid is added, followed by TPP for condensation; fourth, after methanol is poured into the reactor, the sediment is separated out from the mixture, filtered, washed and dried, so the semi-aromatic polyamide containing oxazole ring is obtained.
本发明的合成方法如下:一、分别重结晶5-氨基-2-苯并唑与脂肪族二酸;蒸馏NMP;干燥增溶剂;二、在氮气气氛下,Py与NMP混匀后加入密封的反应器中,再加入增溶剂,然后加入5-氨基-2-苯并唑,搅拌;三、在氮气气氛下,将步骤二的混合液搅拌并升温至50℃~150℃后加入脂肪族二酸,再加入TPP后缩聚;四、再倾入甲醇析出沉淀,过滤,清洗沉淀,再干燥;即得到含唑环半芳香聚酰胺。
-
MPH plastic magnetic pump complies with JB/T7742-1995Standard for Small Magnetic Transmission Centrifugal Pump. Its flow-through parts adopt PPS with corrosion resistance to most acid, alkali and salt (except oxidable acid like strong sul-furic acid, nitric acid and aqua regia). Its performance is close to the chemical performance of F4, which can resist to most organic solvents under 100℃, especially to the mixture of gas and carbinol. Thus it is an ideal pump for acid and alkali industries.
MPH型塑料磁力泵符合JB/T 7742-1995《小型磁力传动离心泵》标准,过流部件采用聚苯硫醚,不受大多数酸、碱、盐的侵蚀(除氧化性酸如浓硫酸、硝酸和王水等),其性能接近于聚四氟乙烯的化学性能,在100℃以下能耐大多数有机溶剂,特别能耐汽油和甲醇的混和液,是酸碱工业中的理想用泵。
- 推荐网络例句
-
According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.
曝气设备的动力效率在叶轮转速为120rpm~150rpm时取得最大值,此时氧利用率和充氧能力也具有较高值。
-
The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.
稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世,形体几无变化。
-
When I was in school, the rabbi explained everythingin the Bible two different ways.
当我上学的时候,老师解释《圣经》用两种不同的方法。