水醇的
- 与 水醇的 相关的网络例句 [注:此内容来源于网络,仅供参考]
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When the first purification alcohol extract first enrichment, then add water to dissolve acid, then the acid fluid, finally using organic solvent basification extraction, the organic solvent extraction layer to get concentration, total alkaloid.
纯化时首先把醇提取液先浓缩,然后加入酸水进行溶解,接着再把得到的酸水液碱化,最后用有机溶剂萃取,萃取得到的有机溶剂层再进行浓缩,就得到总生物碱。
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UNIFAC method was applied to the mathematical simulation of methanol distillation to calculate the equilibrium data of five component systems which include methanol, water, decane, isobutanol and ethanol.
将UNIFAC法应用于甲醇精馏过程数学模拟,计算甲醇-水-癸烷-异丁醇-乙醇五组分体系的汽液平衡数据,从理论上成功地解释了在甲醇精馏过程中加水萃取精馏的原理。
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The effect of additives combined polyalcohol anion surface active agent with alkali activator or high efficiency sulfonate water-reducing agent on physic-chemical performance of slag powder and slag-cement system pastes have been studied.
选择多元醇类阴离子表面活性剂分别与碱性激发剂和高效磺酸盐减水剂进行复合,研究了复合添加剂对矿渣粉体和矿渣-水泥浆体的物理化学性质的影响。
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The effects of feeding way of phosphorus pentoxide, ratio of C8H174OH to P2O5, reaction temperature and time on the synthesized isooctanol polyethenoxy ether phosphate were investigated. Its optimum synthesis technology conditions were as follows: feeding at batches while stirring tempestuously at 45℃, the ratio of nC8H17(EO4OH:n(P2O5)=2:1, esterifying at 70℃ for 4h, and add given volume of water at 70℃ for hydrolysing 2h.
研究五氧化磷的投料方式、反应物的用量比、反应温度和反应时间等因素对合成的异辛醇聚氧乙烯醚C8H17(EO4OH磷酸酯性能的影响,得到优化的异辛醇聚氧乙烯醚磷酸酯的合成工艺条件:在强烈搅拌下,分批投入P2O5,加料时的温度不超过45℃,nC8:H17(EO4OH:n(P2O5)=2:1,酯化温度为70℃,酯化时间为4h,在温度70℃时加入定量的水再水解2h。
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Reverse-phase chromatography was employed for chiral separation of tropine acid enantiomers on the cellulose tribenzoate chiral stationary phases coated on a small-particle spherical silica support in an eluant system consisting of a mixture of alcohol and water.
摘 要:以乙醇-水流动相,用纤维素-三作为手性固定相对外消旋体托品酸进行了高效液相色谱手性分离考察了不同比例的乙醇-水流动相、不同流速以及用不同醇类酯化对托品酸酯在手性色谱柱上的色谱行为。
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Various reaction parameters such as ratio of ethyl acetoacetate to ethylene glycol,catalyst amount,reaction time and water-carrying reagent amount were studied.
讨论了酯醇比、催化剂用量、反应时间、带水剂用量对酯化率的影响。最佳反应条件为:n:n=1:1.8,催化剂用量为乙酰乙酸乙酯质量的2%,带水剂用量为20mL,反应时间3h。
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The results showed that either of the extracted propolis had significant inhibitory effect on the level of triglyceride, total cholesterol, LDL-C,GPT and GOT in serum, and TC, TG and MDA in liver, but were ineffective on HDL-C, MDA, SOD and NO levels in serum. Ethanol extracted propolis also reduced the body weight, liver weight and liver index of hyperlipidemic SD rats, while water extracted propolis were adiaphorous.
结果表明:蜂胶醇提液和水提液均能有效抑制高脂血症SD大鼠血清中的甘油三酯、总胆固醇、低密度脂蛋白、谷丙转氨酶、谷草转氨酶的升高,并且能有效抑制肝脏组织中的TC、TG、MDA的升高,但对血清中的高密度脂蛋白、超氧化物歧化酶、丙二醛、一氧化氮的影响不明显;蜂胶醇提液能有效降低高脂血症SD大鼠的体重、肝重及肝指数,蜂胶水提液对体重、肝重及肝指数的影响则不显著。
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We have presented a practical method for the preparation of propargylic alcohols from terminal alkynes and carbonyl compounds promoted by KOH in the presence of 18-crown-6,and subsequent efficient cyclizations of propargylic alcohols with 2-naphthol catalyzed by InCl_3·4H_2O under the solvent-free ball-milling conditions.Ball milling exhibits its superiority over the reported methods in the preparation of propargylic alcohols and naphthopyran derivatives.
采用机械研磨方法进行了连续的两步固相化学反应的研究:首先,在氢氧化钾和18-冠-6的作用下,端基炔和羰基化合物在机械研磨条件下反应可以高效地生成相应的炔醇化合物;其次,在四水合三氯化铟的催化作用下,生成的炔醇化合物和2-萘酚在机械研磨条件下环加成生成相应的萘并吡喃产物。
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The results showed that intermidiate 1, 2-propanediol-sebacate of low relative molecular mass was synthesized with toluene-p-sulfoinc acid as catalyst, benzene as watercarrying agent, and of mole ratio of sebacic acid to 1, 2-propanediol of 1:4. The glass-transition temperatures of PPSC were below 0 ℃ which confirmed that PPSC would be in a high-elastic state of ambient temperature and human body temperature. PPSC was a elastomer with moderate crosslinkage, low module and high elongation, and had rapid degradation ratio (degradation degree more than 50%) in phosphate (pH value 7.4) at 37℃.
结果表明,以对甲苯磺酸为催化剂、苯为带水剂,在酸醇比为1,4的条件下可合成较低相对分子质量的中间体癸二酸聚酯二元醇;PPSC弹性体的玻璃化转变温度在0℃以下,于室温及人体温度下处于高弹态;PPSC为适度交联的、低模量高伸长的弹性体,其在37℃、pH值为7.4的磷酸盆缓冲溶液中具有较快的降解性(降解度超过50%)。
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Bottle Ingredients: Purified water, Thayers proprietary Witch Hazel Extract, natural Lavender fragrance, natural Lavender water, Aloe Vera, Vitamin E Acetate, Methylparaben, Polysorbate 20 (a natural emulsifier derived from coconut oil), Propylene glycol (food grade, natural humectant used to attract moisture).
成分:纯净水,Thayers独有的金缕梅提取物,天然熏衣草香气,天然熏衣草花水,芦荟,VE醋酸,丁二醇,Polysorbate 20,丙二醇。这个官网没图!!但是我好像在莱迪下面看到过,南京的mm可以去看看。在莱迪靠地铁的那边往里走,第一家化妆品小店,有超市出口处的那种检测物品的金属栏。
- 推荐网络例句
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With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.
随着死亡的吉他手Schuldiner接受主唱的职务,乐队在现实中树立了重要的影响。
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But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.
不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐,因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。
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Closes the eye, the deep breathing, all no longer are the dreams as if......
关闭眼睛,深呼吸,一切不再是梦想,犹如。。。。。。