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Regioselective acylation of pyridoxine catalyzed by immobilized lipase in ionic liquid
BAI Shu, REN Mengyuan, WANG Lele, SUN Yan
《化学科学与工程前沿(英文)》 2008年 第2卷 第3期 页码 301-307 doi: 10.1007/s11705-008-0060-x
关键词: ACN stability 1-butyl-3-methylimidazolium hexafluorophosphate different rate-temperature alternative
Methyl acetate–methanol mixture separation by extractive distillation: Economic aspects
Elena Graczová, Branislav Šulgan, Samuel Barabas, Pavol Steltenpohl
《化学科学与工程前沿(英文)》 2018年 第12卷 第4期 页码 670-682 doi: 10.1007/s11705-018-1769-9
Methyl acetate is considered low toxicity volatile solvent produced either as a by-product during methanol carbonylation or via acetic acid esterification with methanol. In both cases, pure methyl acetate has to be isolated from the reaction mixture. Simulation of methyl acetate separation from its mixture with methanol by extraction distillation was carried out in ASPEN+ software. In total three case studies were assumed using two different extraction solvents and two solvent regeneration strategies. In case A, novel extraction solvent 1-ethyl-3-methylimidazolium trifluoromethanesulfonate ionic liquid, was considered. Raw material separation was achieved in an extraction distillation column while the solvent regeneration was accomplished in a second distillation column in this case. In case study B, the same extraction solvent was used; however, its regeneration was carried out in a single-effect evaporator. Dimethyl sulfoxide was the second extraction solvent selected. Its use in methyl acetate-methanol separation is presented in case study C. As high purity of dimethyl sulfoxide was required for the methyl acetate-methanol azeotrope breaking, its regeneration was carried out in the second distillation column only. To simulate the ternary methyl acetate–methanol–extraction solvent mixtures separation, vapor–liquid equilibrium was predicted based on the NRTL equation. Further, unknown properties of the considered ionic liquid and variation of these properties with temperature were predicted and introduced into the ASPEN+ components properties database. Based on these data, optimum operation parameters of the respective separation equipment were established. In all case studies, the same condition had to be fulfilled, namely minimum methyl acetate content in the distillate from the extraction distillation column of 99.5mol-%. Results of simulations using the respective optimum operation parameters were employed in the economic evaluation of the three separation unit designs studied. It was found that the least energy-demanding design corresponds to the case study B in terms of both capital as well as operation expenses.
关键词: methyl acetate 1-ethyl-3-methylimidazolium trifluoromethanesulfonate extraction distillation dimethyl sulfoxide economic evaluation
《医学前沿(英文)》 doi: 10.1007/s11684-023-1003-0
关键词: Lipin3 Lipin1 hypertriglyceridemia obesity mitochondrial dysfunction
Enhancement of open circuit voltage in organic solar cells by doping a fluorescent red dye
Qing LI, Junsheng YU, Yue ZANG, Nana WANG, Yadong JIANG
《能源前沿(英文)》 2012年 第6卷 第2期 页码 179-183 doi: 10.1007/s11708-012-0177-y
关键词: organic solar cells (OSCs) open circuit voltage fluorescent dye doping 4-(dicyanomethylene)-2-t-butyl-6-(1 1 7 7-tetramethyljulolidyl-9-enyl)-4H-pyran (DCJTB)
APPLE SUMO E3 LIGASE MDSIZ1 NEGATIVELY REGULATES DROUGHT TOLERANCE
《农业科学与工程前沿(英文)》 2021年 第8卷 第2期
Drought stress typically causes heavy losses in apple production and uncovering the mechanisms by which apple tolerates drought stress is important in apple breeding. MdSIZ1 is a SUMO (small ubiquitin-like modifier) E3 ligase that promotes SUMO binding to substrate proteins. Here, we demonstrate that MdSIZ1 in apple has a negative relationship with drought tolerance. MdSIZ1 RNAi transgenic apple trees had a higher survival rate after drought stress. During drought stress they had higher leaf water potential, reduced ion leakage, lower H2O2 and malondialdehyde contents, and higher catalase activity. In addition, MdSIZ1 RNAi transgenic plants had a higher net photosynthetic rate during the latter period of drought stress. Finally, the transgenic apple trees also altered expression levels of some microRNAs in response to drought stress. Taken together, these results indicate that apple MdSIZ1 negatively regulates drought stress by enhancing leaf water-holding capacity and antioxidant enzyme activity.
基于玻璃通孔的Ka波段宽带滤波封装天线 Research Article
方针1,2,张继华1,2,3,高莉彬1,2,陈宏伟1,2,李文磊1,2,梁天鹏1,2,蔡旭东1,2,蔡星周3,贾惟聪3,郭欢3,李勇3
《信息与电子工程前沿(英文)》 2023年 第24卷 第6期 页码 916-926 doi: 10.1631/FITEE.2200573
Influence and related mechanism of Retn gene expression on glucose uptake in 3T3-L1 cells
LI Yahui, DONG Shiyuan, YU Chao, JIANG Yu, LI Huaixing, SUN Shuhan
《医学前沿(英文)》 2007年 第1卷 第3期 页码 269-273 doi: 10.1007/s11684-007-0051-1
关键词: 3T3-L1 influence resistance receptor substrate-1 transport
用以产生高纯度涡旋波束的宽带圆极化透射阵 Correspondence
邱靓婕1,2,3,4,李秀萍1,2,3,4,齐紫航1,2,3,4,赵文禹1,2,3,4,黄雨菡5
《信息与电子工程前沿(英文)》 2023年 第24卷 第6期 页码 927-934 doi: 10.1631/FITEE.2200539
《医学前沿(英文)》 2022年 第16卷 第6期 页码 883-895 doi: 10.1007/s11684-022-0919-0
关键词: osteosarcoma autophagy metastasis drug resistance Beclin1 LC3B
LI Yanhua, BI Zhigang
《医学前沿(英文)》 2007年 第1卷 第1期 页码 79-86 doi: 10.1007/s11684-007-0016-4
APPLE SUMO E3 LIGASE MDSIZ1 NEGATIVELY REGULATES DROUGHT TOLERANCE
《农业科学与工程前沿(英文)》 2021年 第8卷 第4期 页码 662-662 doi: 10.15302/J-FASE-2021408
磁控溅射法生长的带隙可调谐(GaxIn1−x)2O3 Research Articles
张法碧1,孙巾寓1,李海鸥1,周娟1,王荣1,孙堂友1,傅涛1,肖功利1,李琦1,刘兴鹏1,张秀云1,郭道友2,王相虎3,秦祖军1
《信息与电子工程前沿(英文)》 2021年 第22卷 第10期 页码 1370-1378 doi: 10.1631/FITEE.2000330
基于FPGA的资源节约型结构PRINCE的实现 Research Articles
李浪1,2,3,冯景亚1,2,刘波涛1,3,郭影1,3,李秋萍1,3
《信息与电子工程前沿(英文)》 2021年 第22卷 第11期 页码 1505-1516 doi: 10.1631/FITEE.2000688
基于三维参数模型重建的心脏病理视觉识别 Research Article
肖金肖1,李岩松1,田沄1,徐冬溶2,3,李鹏辉1,赵世凤1,潘云鹤3
《信息与电子工程前沿(英文)》 2022年 第23卷 第9期 页码 1324-1337 doi: 10.1631/FITEE.2200102
Expression and clinical implication of PRL-1 and PRL-3 in transitional cell carcinoma of bladder
Bin HAO, Changwei LIU, Huixiang LI
《医学前沿(英文)》 2009年 第3卷 第2期 页码 197-203 doi: 10.1007/s11684-009-0036-3
关键词: transitional cell carcinoma of bladder phosphatase of regenerating liver 1 phosphatase of regenerating liver 3 reverse transcription polymerase chain reaction immunohistochemistry
标题 作者 时间 类型 操作
Regioselective acylation of pyridoxine catalyzed by immobilized lipase in ionic liquid
BAI Shu, REN Mengyuan, WANG Lele, SUN Yan
期刊论文
Methyl acetate–methanol mixture separation by extractive distillation: Economic aspects
Elena Graczová, Branislav Šulgan, Samuel Barabas, Pavol Steltenpohl
期刊论文
Haploinsufficiency of Lipin3 leads to hypertriglyceridemia and obesity by disrupting the expression andhypertriglyceridemia and obesity by disrupting the expression and nucleocytoplasmic localization of Lipin1
期刊论文
Enhancement of open circuit voltage in organic solar cells by doping a fluorescent red dye
Qing LI, Junsheng YU, Yue ZANG, Nana WANG, Yadong JIANG
期刊论文
Influence and related mechanism of Retn gene expression on glucose uptake in 3T3-L1 cells
LI Yahui, DONG Shiyuan, YU Chao, JIANG Yu, LI Huaixing, SUN Shuhan
期刊论文
Superenhancers activate the autophagy-related genes Beclin1 and LC3B to drive metastasis and drug resistance
期刊论文
Ultraviolet-B induced expression of hypoxia-inducible factor 1α, transferrin receptor through EGFR/PI3K/AKT/DEC1 pathway
LI Yanhua, BI Zhigang
期刊论文