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The invention relates to a continuous process for recovering caprolactam from aqueous caprolactam product, said aqueous caprolactam product comprising caprolactam, impurities, and water, said process comprising: adding alkali hydroxide to the aqueous caprolactam product, in an amount of not more than 100 mmol alkali hydroxide per kg of caprolactam; reacting at least part of the added alkali hydroxide to form alkali amino caproate, to obtain a caproate-enriched caprolactam product; and distilling the caproate-enriched caprolactam product at reduced pressure.
本发明涉及从含水己内酰胺产物中回收己内酰胺的连续方法,所述含水己内酰胺产物包括己内酰胺,杂质,和水,所述方法包括:以不超过100mmol碱金属氢氧化物/kg的己内酰胺的量将碱金属氢氧化物加入到含水己内酰胺产物中;让所添加的碱金属氢氧化物的至少一部分起反应,形成碱金属氨基己酸盐,以获得了富含己酸盐的己内酰胺产物;和减压蒸馏富含己酸盐的己内酰胺产物。
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The allergens with molecular mass of 21kD and 11kD were identified by Western-blotting. The 21kD and 11kD allergens of cashew nut were purified by ion exchange chromatography.
结果 腰果粗提液SDS-PAGE显示有10条蛋白条带,Western-blotting显示对腰果过敏患者的阳性混合血清能与其中2个蛋白条带起反应,分子量分别为21kD和11kD。
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While, it is the II mechanism that plays the main role in the therapy, that is the producing of cytotoxin singlet oxygen affected by the oxygen.
而且在光动力治疗过程中,主要是通过Ⅱ型机制起反应,即氧影响着主要的细胞毒素单态氧的产生。
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Why? The propeller reacts to changing airspeed like a pinwheel reacts to wind.
为什么?推进器起反应对改变的空速如pinwheel 起反应对风。
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Depending on the structure the polymer may be hydrophilic or hydrophobic, stiff or flexible, crystalline or amorphous, reactive or unreactive.
根据各自的结构不同,聚合物可以是亲水的或憎水的,硬的或软的,晶体状的或非结晶质的,易起反应的或不易起反应的。
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Flame retardants may interrupt or change the decomposition process in several ways:(1)they may melt at relatively low temperatures and resolidify in the form of a foam, which serves as a barrier to heat transfer from the flame to the substrate;(2) they may be converted upon heating into acids or bases, which catalyze the decomposition of the substrate at lower temperatures than are required for the formation of volatile combustibles;(3 ) they may decompose orsublime upon heating to release large amounts of nonflammable vapors which exclude oxygen from the flame; or (4) they may react with chemicakl species within the flame to stop the combustion reaction.
阻燃剂可以从几个方面干涉或改变织物的分解过程:(1)阻燃剂在相对较低的温度时会熔化,然后重新固化成泡沫状,这样就形成了一个屏障,阻止了从火焰向织物的热传递。(2)阻燃剂受热时会分解成酸或碱,这些酸或碱在低于可生成挥发性可燃物的温度下可以催化织物的分解。(3)阻燃剂在受热时会分解或升华,同时释放出大量不可燃气体,这就阻止了氧气对火焰的供应。(4)阻燃剂可以与火焰中的化学物质起反应,使燃烧反应终止。
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A particular feature of this crystal is that it reacts to electric currents in predictable ways by untwisting to varying degrees depending on the voltage of the current to which it is exposed. Hence the "liquid" part of the crystal's moniker: Rather than being an oxymoron How can a solid also be a liquid?
水晶的一个特别的特性是它会对电流起可预测信方式的反应藉由根据它暴露潮流的电压分开变化的程度来起反应的,因此水晶标示的液体部分,而不是一个矛盾法又是固体又是液体?
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HPMC is prepared when a purified form of cellulose is reacted with sodium hydroxide solution to produce a swollen alkali cellulose that is chemically more reactive than untreated cellulose.
当被净化的纤维素与氢氧化纳溶液反应产生一种膨胀碱性纤维素时,HPMC就产生了,这种纤维素在化学上比没有经过处理的纤维素更易起反应。
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Shall not be affected or significantly weakened by those dangerous goods; and shall not cause a dangerous effect e..g. catalysing a reaction or reacting with the dangerous goods.
不得受到危险货物的影响或强度被危险货物明显地减弱;和不得在包件内造成危险的效应,例如促使危险货物起反应或与危险货物起反应。
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"The acid reacts with most metals, to produce hydrogen and the metal's chloride, and with oxides, hydroxides , and many salts."
盐酸与大多数金属反应产生氢和金属的氯化物,还能与氧化物、氢氧化物及许多盐起反应。
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nonreactive:不起反应的
nonrandomized strategy 非随机化策略 | nonreactive 不起反应的 | nonreciprocal observation 单向观测
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react on:起作用于
react against 反抗 | react on 起作用于 | react to 起反应
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react to:对...起反应
react on 对...有影响 . | react to 对...起反应 . | get ready (使)准备好 .
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react to:起反应
react on 起作用于 | react to 起反应 | react 起反应
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reacting:反应的
reacting 起反应 | reacting 反应的 | reactinomycin 重放线霉素
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reacting:起反应
reactatron 低噪声微波放大器 | reacting 起反应 | reacting 反应的
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reacting:起反应 反应 反应的
reactatron低噪声微波放大器 | reacting起反应 反应 反应的 | reactingdose反应量
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reacting substance:反应物
reacting steel再结晶钢 | reacting substance反应物 | reactionless不起反应的、惰性的
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unreactive:不起反应的
unreacted 未反应的 | unreactive 不起反应的 | unrealizedloss 未实付损失
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reacted silicone dofoamer:起反应的硅氧烷消泡剂
羟基丙基甲基纤维素 hydroxypropyl methylcellulose | 起反应的硅氧烷消泡剂 reacted silicone dofoamer | 歧化妥尔油松香钠盐 sodium salt of disproportionated tall oil rosin