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Fengyu ZAN, Shouliang HUO, Beidou XI, Xiulan ZHAO
《环境科学与工程前沿(英文)》 2012年 第6卷 第1期 页码 51-58 doi: 10.1007/s11783-011-0206-9
关键词:
Exposure-response of Cr(III)-organic complexes to Saccharomyces cerevisiae
Nivedita CHATTERJEE, Zejiao LUO,
《环境科学与工程前沿(英文)》 2010年 第4卷 第2期 页码 196-202 doi: 10.1007/s11783-010-0008-5
关键词: Cr(III)-organic complexes Saccharomyces cerevisiae toxicity EC50 bioavailability
Assembly of biosynthetic pathways in
Lidan Ye,Xiaomei Lv,Hongwei Yu
《化学科学与工程前沿(英文)》 2017年 第11卷 第1期 页码 126-132 doi: 10.1007/s11705-016-1597-8
关键词: pathway assembly toolbox reiterative recombination S. cerevisiae biosynthesis
利用异源酶组合构建酿酒酵母中咖啡酸的生物合成 Article
刘岚清, 刘宏, 张伟, 姚明东, 李炳志, 刘夺, 元英进
《工程(英文)》 2019年 第5卷 第2期 页码 287-295 doi: 10.1016/j.eng.2018.11.029
微生物中构建植物源天然产物的生物合成面临着许多挑战,尤其是当需要表达与激活植物源细胞色素P450酶的时候。通过从几种细菌中筛选HpaB和HpaC两种酶,本文在酿酒酵母中构建了具有活性的4-羟基苯乙酸3-羟化酶(4 HPA3H),它可以发挥植物源细胞色素P450酶的相似作用,用于生产咖啡酸。在与一个共同的酪氨酸氨裂解酶(TAL)协同作用下,不同的异源HpaB酶和HpaC酶组合在将底物L-酪氨酸转化为目标产物咖啡酸上展现出不同能力。以铜绿假单胞菌的HpaB酶和肠沙门氏菌的HpaC酶的异源酶组合可生产最高咖啡酸产量,摇瓶培养下可达到(289.4 ± 4.6)mg·L−1。酵母底盘细胞与异源酶的相容性得到了有效的改善,咖啡酸的产量比初始值提高了40倍。铜绿假单胞菌HpaB酶中黄素腺嘌呤二核苷酸(FAD)结合域周围的6个关键氨基酸残基与其他细菌来源的HpaB酶有明显区别,可能在影响酶活性方面起关键作用。综上,我们建立了一种有效的方法来构建高效的酵母系统用于合成非天然羟基苯丙烷类化合物。
Comparative lipidomic analysis of
Bin QIAO, Hong-Chi TIAN, Ying-Jin YUAN
《化学科学与工程前沿(英文)》 2012年 第6卷 第4期 页码 461-469 doi: 10.1007/s11705-012-1223-3
关键词:
lipidomics
systems biology
phospholipids
stirred-tank
Improving prodeoxyviolacein production via multiplex SCRaMbLE iterative cycles
Juan Wang, Bin Jia, Zexiong Xie, Yunxiang Li, Yingjin Yuan
《化学科学与工程前沿(英文)》 2018年 第12卷 第4期 页码 806-814 doi: 10.1007/s11705-018-1739-2
The synthetic chromosome rearrangement and modification by loxP-mediated evolution (SCRaMbLE) system has been used to improve prodeoxyviolacein (PDV) production in haploid yeast containing chromosome synV. To rapidly and continuously generate genome diversification with the desired phenotype, the multiplex SCRaMbLE iterative cycle strategy has been developed for the screening of high PDV production strains. Whole-genome sequencing analysis reveals large duplications, deletions, and even the whole genome duplications. The deletion of YER151C is proved to be responsible for the increase. This study demonstrates that artificial DNA rearrangement can be used to accelerate microbial evolution and the production of biobased chemicals.
关键词: synthetic biology genome rearrangement prodeoxyviolacein SCRaMbLE Saccharomyces cerevisiae
Ruizhao Wang,Xiaoli Gu,Mingdong Yao,Caihui Pan,Hong Liu,Wenhai Xiao,Ying Wang,Yingjin Yuan
《化学科学与工程前沿(英文)》 2017年 第11卷 第1期 页码 89-99 doi: 10.1007/s11705-017-1628-0
关键词: synthetic biology astaxanthin β-carotene hydroxylase β-carotene ketolase Saccharomyces cerevisiae
Exergy analysis and simulation of a 30MW cogeneration cycle
Nikhil Dev, Samsher, S. S. Kachhwaha, Rajesh Attri
《机械工程前沿(英文)》 2013年 第8卷 第2期 页码 169-180 doi: 10.1007/s11465-013-0263-9
Cogeneration cycle is an efficient mean to recover the waste heat from the flue gases coming out of gas turbine. With the help of computer simulation, design parameters may be selected for the best performance of cogeneration cycle. In the present work a program is executed in software EES on the basis of mathematical modelling described in paper to study cogeneration cycle performance for different parameters. Results obtained are compared with the results available in literature and are found in good agreement with them. Real gas and water properties are inbuilt in the software. Results show that enthalpy of air entering the combustion chamber is higher than that of the flue gases at combustion chamber outlet. For different operative conditions, energy and exergy efficiencies follow similar trends; although, exergy efficiency values are always lower than the corresponding energy efficiency ones. From the results it is found that turbine outlet temperature (TIT) of 524°C is uniquely suited to efficient cogeneration cycle because it enables the transfer of heat from exhaust gas to the steam cycle to take place over a minimal temperature difference. This temperature range results in the maximum thermodynamic availability while operating with highest temperature and highest efficiency cogeneration cycle. Effect of cycle pressure ratio (CR), inlet air temperature (IAT) and water pressure at heat recovery steam generator (HRSG) inlet on the 30 MW cogeneration cycle is also studied.
关键词: Cogeneration cycle air compressor HRSG gas turbine regenerator CR IAT
香蕉假茎作为吸附剂用于水溶液中铅离子去除的条件优化、动力学与吸附平衡研究 Article
Shridhar S. Bagali, Bychapur S. Gowrishankar, Aashis S. Roy
《工程(英文)》 2017年 第3卷 第3期 页码 409-415 doi: 10.1016/J.ENG.2017.03.024
香蕉假茎粉末等天然吸附剂对于去除废水中的重金属元素具有非常重要的作用。现有的去除重金属元素的常规方法难以满足水资源循环和化学工业的需求。本文论证了利用天然物质处理废水的可能性。利用环境扫描电子显微镜(ESEM) 和傅里叶变换红外(FTIR) 光谱学分析方法,研究了香蕉假茎粉末吸附铅离子前后的变化。实验采用批处理方法研究了水溶液中铅离子去除的效果。通过改变初始pH 值、吸附剂用量、初始铅离子浓度、吸附时间等参数,研究了吸附动力学的影响。结果表明,在水溶液pH 值为5.5 时,香蕉假茎粉末达到零电荷点。采用吸附等温线和动力学模型分析实验数据,采用朗缪尔吸附等温式拟合铅离子在香蕉假茎粉末表面的吸附作用。实验表明,香蕉假茎粉末对铅离子的吸附量为34.21 mg·g−1,与拟二级动力学模型相匹配。此外,采用响应面分析法确定了铅离子吸附的最佳条件,铅离子的去除率高达89%。
Automated retrofit targeting of heat exchanger networks
Walmsley, Nathan S. Lal, Petar S. Varbanov, Jiří J. Klemeš
《化学科学与工程前沿(英文)》 2018年 第12卷 第4期 页码 630-642 doi: 10.1007/s11705-018-1747-2
The aim of this paper is to develop a novel heat exchanger network (HEN) retrofit method based on a new automated retrofit targeting (ART) algorithm. ART uses the heat surplus-deficit table (HSDT) in combination with the Bridge Retrofit concepts to generate retrofit bridges option, from which a retrofit design may be formulated. The HSDT is a tabular tool that shows potential for improved re-integration of heat source and sink streams within a HEN. Using the HSDT, retrofit bridges—a set of modifications that links a cooler to a heater to save energy—may be identified, quantified, and compared. The novel retrofit method including the ART algorithm has been successfully implemented in Microsoft ExcelTM to enable analysis of large-scale HENs. A refinery case study with 27 streams and 46 existing heat exchangers demonstrated the retrofit method’s potential. For the case study, the ART algorithm found 68903 feasible unique retrofit opportunities with a minimum 400 kW·unit−1 threshold for heat recovery divided by the number of new units. The most promising retrofit project required 3 new heat exchanger units to achieve a heat savings of 4.24 MW with a favorable annualised profit and a reasonable payback period.
关键词: process retrofit pinch analysis heat exchanger network heat recovery
Techno-economic evaluation of wind energy in southwest Nigeria
Muyiwa S. ADARAMOLA, Olarenwaju M. OYEWOLA, Olayinka S. OHUNAKIN, Rufus R. DINRIFO
《能源前沿(英文)》 2012年 第6卷 第4期 页码 366-378 doi: 10.1007/s11708-012-0205-y
关键词: mean wind speed Weibull distributions wind turbine techno-economic analysis southwest geopolitical region Nigeria
Estimation of power in low velocity vertical axis wind turbine
Sampath S. S.,Sawan SHETTY,Chithirai Pon Selvan M.
《机械工程前沿(英文)》 2015年 第10卷 第2期 页码 211-218 doi: 10.1007/s11465-015-0338-x
The present work involves in the construction of a vertical axis wind turbine and the determination of power. Various different types of turbine blades are considered and the optimum blade is selected. Mechanical components of the entire setup are built to obtain maximum rotation per minute. The mechanical energy is converted into the electrical energy by coupling coaxially between the shaft and the generator. This setup produces sufficient power for consumption of household purposes which is economic and easily available.
Dmitry S. STREBKOV
《农业科学与工程前沿(英文)》 2015年 第2卷 第1期 页码 1-12 doi: 10.15302/J-FASE-2015052
关键词: fossil fuels biofuels food security electric power solar energy
Orderly decorated nanostructural photoelectrodes with uniform spherical TiO
Bakhshayesh,S. S. Azadfar
《化学科学与工程前沿(英文)》 2015年 第9卷 第4期 页码 532-540 doi: 10.1007/s11705-015-1549-8
关键词: dye-sensitized solar cell uniform particles TiO2 gel process light harvesting
S. SAMANTA, S. S. NANTHAKUMAR, R. K. ANNABATTULA, X. ZHUANG
《结构与土木工程前沿(英文)》 2019年 第13卷 第3期 页码 542-556 doi: 10.1007/s11709-018-0496-0
关键词: piezoelectricity impedance curve mode shapes inverse problem flaw detection curve shifting
标题 作者 时间 类型 操作
Exposure-response of Cr(III)-organic complexes to Saccharomyces cerevisiae
Nivedita CHATTERJEE, Zejiao LUO,
期刊论文
Improving prodeoxyviolacein production via multiplex SCRaMbLE iterative cycles
Juan Wang, Bin Jia, Zexiong Xie, Yunxiang Li, Yingjin Yuan
期刊论文
Engineering of
Ruizhao Wang,Xiaoli Gu,Mingdong Yao,Caihui Pan,Hong Liu,Wenhai Xiao,Ying Wang,Yingjin Yuan
期刊论文
Exergy analysis and simulation of a 30MW cogeneration cycle
Nikhil Dev, Samsher, S. S. Kachhwaha, Rajesh Attri
期刊论文
香蕉假茎作为吸附剂用于水溶液中铅离子去除的条件优化、动力学与吸附平衡研究
Shridhar S. Bagali, Bychapur S. Gowrishankar, Aashis S. Roy
期刊论文
Automated retrofit targeting of heat exchanger networks
Walmsley, Nathan S. Lal, Petar S. Varbanov, Jiří J. Klemeš
期刊论文
Techno-economic evaluation of wind energy in southwest Nigeria
Muyiwa S. ADARAMOLA, Olarenwaju M. OYEWOLA, Olayinka S. OHUNAKIN, Rufus R. DINRIFO
期刊论文
Estimation of power in low velocity vertical axis wind turbine
Sampath S. S.,Sawan SHETTY,Chithirai Pon Selvan M.
期刊论文
Orderly decorated nanostructural photoelectrodes with uniform spherical TiO
Bakhshayesh,S. S. Azadfar
期刊论文