N - hydroxyethylpyrrolidone ( NHP ) was synthesized from � � - butyrolactone and ethanolamine on Y molecular sieve catalyst by two steps.以改性Y分子筛为催化剂,γ-丁内酯和乙醇胺为原料,采用γ - 丁内酯法两步合成N - 羟乙基吡咯烷酮 ( NHP ).Surface active propertie...
The most abundant phospholipid in many cells is phosphatidyl ethanolamine or cephalin.在许多细胞中,含量最高的磷脂是磷脂酰乙醇胺或脑磷脂.OBJECTIVE To study and improve the synthesis of liposome excipient phosphatidyl ethanolamine.目的研究并改进脂质体辅料磷脂酰...
One of the reasons influencing CFB safe operations return valve clinkering blockage.回料阀结焦堵塞是影响循环流化床锅炉安全运行的原因之一.Example are given to show the tendency of change of clinkering property of coal with pressure.并举例说明了加压下煤结渣性变化...
Please help me to stick the stills from a new film.请帮我把这部新影片的剧照贴上.The whole world stills to listen, and God in His heaven smiles.整个世界都在屏息聆听, 就连天国里的上帝也开颜欢笑.I suggested that the watchers expand their selection of action st...
He is the barrister who will appear for the defence.他是被告的辩护律师。Nobody denies imperatives of food, shelter, defence, health and education.谁也不会否认食品 、 住所 、 防卫 、 健康和教育是必需品.The immune system is our main defence against disease...