Resource Type

Journal Article 14

Year

2022 1

2020 2

2018 1

2017 3

2015 1

2014 1

2013 1

2012 1

2009 1

2007 1

2001 1

open ︾

Keywords

promoter 4

RUNX1 1

CO2 hydrogenation 1

CRISPR/Cas9 1

Coprecipitation–oxidation 1

DNA methylation 1

Fe3O4 nanoparticles 1

HZSM-5 1

Iron catalyst 1

MTP 1

Manganese promoter 1

Nitrogen-doped carbon nanotubes 1

Oxidation–reduction potential 1

Potassium promoter 1

Promoter 1

Promoter measurement 1

RiboJ 1

Synthetic biology 1

Waste pickling liquor 1

X-linked inhibitor of apoptosis protein associated factor-1 (XAF1) 1

open ︾

Search scope:

排序: Display mode:

Effect of a promoter on the methanation activity of a Mo-based sulfur-resistant catalyst

Can LIN, Haiyang WANG, Zhenhua LI, Baowei WANG, Xinbin MA, Shaodong QIN, Qi SUN

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 1,   Pages 88-94 doi: 10.1007/s11705-013-1301-1

Abstract: The effect of adding Co, Ni or La on the methanation activity of a Mo-based sulfur-resistant catalyst was investigated. As promoters, Co, Ni and La all improved the methanation activity of a 15% MoO /Al O catalyst but to different extents. Similar improvements were also found when Co, Ni or La was added to a 15% MoO /25%-CeO -Al O catalyst. The promotion effects of Co and Ni were better than that of La. However, the catalytic methanation activity deteriorated the most with time for the Ni-promoted catalyst. The used catalysts were analyzed by nitrogen adsorption measurement, X-ray diffraction and X-ray photoelectron spectroscopy.

Keywords: sulfur-resistant     methanation     promoter    

Osteopontin is a promoter for hepatocellular carcinoma metastasis: a summary of 10 years of studies

Lunxiu Qin

Frontiers of Medicine 2014, Volume 8, Issue 1,   Pages 24-32 doi: 10.1007/s11684-014-0312-8

Abstract: found that OPN+ HCC cells have much more amplifications at chromosomal regions, and promoter

Keywords: osteopontin (OPN)     hepatocellular carcinoma     metastasis     prognosis     therapeutic target     biomarker     genetic polymorphism    

Cloning of human XAF1 gene promoter and assay of its transcription activity in a variety of cell lines

Qiong CHEN, Qing YU, Yuhu SONG, Peiyuan Li, Ying CHANG, Zhijun WANG, Lifeng LIU, Wei WU, Jusheng LIN

Frontiers of Medicine 2009, Volume 3, Issue 2,   Pages 148-152 doi: 10.1007/s11684-009-0032-7

Abstract: regulation of tumor suppressor XAF1 gene expression in digestive system cancers, we studied XAF1 gene promotercell line L02 (L02 cells) and human embryonic kidney 293 cells [HEK293 cells]) as controls. 1395-bp-promoterThe promoter transcription activity was determined by dual-luciferase report assay, and enhanced greenThe dual-luciferase reporter assay showed that the promoter transcription activity in digestive systemtumor cell lines transfected with pGL3-XAF1p promoter was apparently lower than that of both HEK293

Keywords: gene     X-linked inhibitor of apoptosis protein associated factor-1 (XAF1)     promoter     transcription regulation    

Distinct gene expression pattern of mutations coordinated by target repression and promoter hypermethylation

Frontiers of Medicine 2022, Volume 16, Issue 4,   Pages 627-636 doi: 10.1007/s11684-020-0815-4

Abstract: This expression pattern was coordinated by target repression and promoter hypermethylation.Through the integration of DNA methylation array data, we illustrated that hypermethylation on the promoter

Keywords: RUNX1     gene mutation     acute myeloid leukemia     transcriptional repression     DNA methylation    

Construction, characterization and application of a genome-wide promoter library in

Ting Yuan,Yakun Guo,Junkai Dong,Tianyi Li,Tong Zhou,Kaiwen Sun,Mei Zhang,Qingyu Wu,Zhen Xie,Yizhi Cai,Limin Cao,Junbiao Dai

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 1,   Pages 107-116 doi: 10.1007/s11705-017-1621-7

Abstract: Here we report the construction of a genome-wide promoter library, in which each native promoter in

Keywords: synthetic biology     yeast     promoter activity     metabolic engineering     xylose utilization    

Effects of MgO promoter on properties of Ni/Al2O3 catalysts for partial oxidation of methane to syngas

QIU Yejun, CHEN Jixiang, ZHANG Jiyan

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 2,   Pages 167-171 doi: 10.1007/s11705-007-0031-7

Abstract: The effects of MgO promoter on the physico-chemical properties and catalytic performance of Ni/AlO catalystsIt was found that the MgO promoter benefited from the uniformity of nickel species in the catalysts,Moreover, for the catalysts with a proper amount of MgO promoter, the nickel dispersiveness was enhancedHowever, the excessive MgO promoter exerted a negative effect on the catalytic performance.The suitable content of MgO promoter in Ni/AlO catalyst was ?7 wt-%.

Keywords: excessive     selectivity     decrease     dispersiveness     physico-chemical    

Progress in use of surfactant in nearly static conditions in natural gas hydrate formation

Zhen PAN, Yi WU, Liyan SHANG, Li ZHOU, Zhien ZHANG

Frontiers in Energy 2020, Volume 14, Issue 3,   Pages 463-481 doi: 10.1007/s11708-020-0675-2

Abstract: Natural gas hydrate is an alternative energy source with a great potential for development. The addition of surfactants has been found to have practical implications on the acceleration of hydrate formation in the industrial sector. In this paper, the mechanisms of different surfactants that have been reported to promote hydrate formation are summarized. Besides, the factors influencing surfactant-promoted hydrate formation, including the type, concentration, and structure of the surfactant, are also described. Moreover, the effects of surfactants on the formation of hydrate in pure water, brine, porous media, and systems containing multiple surfactants are discussed. The synergistic or inhibitory effects of the combinations of these additives are also analyzed. Furthermore, the process of establishing kinetic and thermodynamic models to simulate the factors affecting the formation of hydrate in surfactant-containing solutions is illustrated and summarized.

Keywords: gas hydrate     kinetic hydrate promoter     compounding     model     surfactant     mechanism    

Effects of Potassium and Manganese Promoters on Nitrogen-Doped Carbon Nanotube-Supported Iron Catalysts for CO2 Hydrogenation Article

Praewpilin Kangvansura, Ly May Chew, Chanapa Kongmark, Phatchada Santawaja, Holger Ruland, Wei Xia, Hans Schulz, Attera Worayingyong, Martin Muhler

Engineering 2017, Volume 3, Issue 3,   Pages 385-392 doi: 10.1016/J.ENG.2017.03.013

Abstract: The structural effect of the Mn promoter was demonstrated by X-ray diffraction (XRD), temperature-programmedThe Mn promoter stabilized wüstite (FeO) as an intermediate and lowered the TPR onset temperatureammonia (NH3) decomposition was used as an additional probe reaction for characterizing the promoter

Keywords: CO2 hydrogenation     Iron catalyst     Nitrogen-doped carbon nanotubes     Manganese promoter     Potassiumpromoter    

Methanol to propylene: the effect of iridium and iron incorporation on the HZSM-5 catalyst

Alireza MOHAMMADREZAEI, Sadegh PAPARI, Mousa ASADI, Abas NADERIFAR, Reza GOLHOSSEINI

Frontiers of Chemical Science and Engineering 2012, Volume 6, Issue 3,   Pages 253-258 doi: 10.1007/s11705-012-0902-4

Abstract: The effect of iridium and iron impregnation of HZSM-5 zeolite on the methanol to propylene reaction (MTP) was investigated. The selectivities of propylene and other hydrocarbons, and the conversion of methanol were compared by performing MTP in a small pilot plant. The results indicate that HZSM-5 zeolite modified by iron and iridium increased propylene selectivity by 6.3% and 8%, respectively. The selectivity of propylene was higher for Ir/H-ZSM-5 than for Fe/H-ZSM-5, where Fe/H-ZSM-5 was more stable than Ir/H-ZSM-5. Analytic techniques, including X-ray diffraction, BET surface area, temperature-programmed desorption of ammonia, and inductively coupled plasma atomic emission spectroscopy, were used to characterize the modified zeolites as well as the parent zeolites.

Keywords: HZSM-5     promoter     iridium     iron     MTP    

Progress in the Study of Triacontanol (TA) and the Prospect of Its Application in Agriculture

Liu Desheng,Zhang Qun,Lu Donghe

Strategic Study of CAE 2001, Volume 3, Issue 2,   Pages 91-94

Abstract:

Triacontanol (TA), a long chain fatty alcohol composed of 30 carbon atoms, generally exists in animal and vegetable waxes. Ordinary beewax is used as raw material for the preparation of TA. Big progress has been made in the study of TA formula. The study and preparation of TA emulsive-powder employing β- CD enclosing and linking technique is the pioneer work at home and abroad. This powdery product has some advantages that the emulsion one does not have such as stable yield increase effect, non-deterioration in long period of storage and convenience in storage and transport. Study on the application of TA emulsive-powder the application to seaweed has been carried out. TA emulsive-powder is a kind of plant growth regulator of non-toxic, non contanmination, low cost, and high effect and with wide prospect of application.

Keywords: triacontanol (TA)     agriculture     plant growth regulator     plant growth promoter    

Efficient promotion of methane hydrate formation and elimination of foam generation using fluorinated surfactants

Quan CAO, Dongyan XU, Huanfei XU, Shengjun LUO, Rongbo GUO

Frontiers in Energy 2020, Volume 14, Issue 3,   Pages 443-451 doi: 10.1007/s11708-020-0683-2

Abstract: Methane hydrate preparation is an effective method to store and transport methane. In promoters to facilitate methane hydrate formation, homogeneous surfactant solutions, sodium dodecyl sulfate (SDS) in particular, are more favorable than heterogeneous particles, thanks to their faster reaction rate, more storage capacity, and higher stability. Foaming, however, could not be avoided during hydrate dissociation with the presence of SDS. This paper investigated the ability of five fluorinated surfactants: potassium perfluorobutane sulfonate (PBS), potassium perfluorohexyl sulfonate (PHS), potassium perfluorooctane sulfonate (POS), ammonium perfluorooctane sulfonate (AOS), and tetraethylammonium perfluorooctyl sulfonate (TOS) to promote methane hydrate formation. It was found that both PBS and PHS achieve a storage capacity of 150 ( , the volume of methane that can be stored by one volume of water) within 30 min, more than that of SDS. Cationic ions and the carbon chain length were then discussed on their effects during the formation. It was concluded that PBS, PHS, and POS produced no foam during hydrate dissociation, making them promising promoters in large-scale application.

Keywords: methane hydrate     fluorinated surfactants     homogeneous promoter     foam elimination     stability    

Novel coprecipitation–oxidation method for recovering iron from steel waste pickling liquor

Shejiang Liu, Hongyang Yang, Yongkui Yang, Yupeng Guo, Yun Qi

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 1, doi: 10.1007/s11783-017-0902-1

Abstract: Coprecipitation–oxidation method was developed to recover the iron from wastewater. Fe O nanoparticles were well synthesized from steel waste pickling liquor. Promoters greatly improved the properties of synthesized Fe O nanoparticle. Real-time control of the Fe /Fe molar ratio was achieved by ORP monitoring. Waste pickling liquors (WPLs) containing high concentrations of iron and acid are hazardous waste products from the steel pickling processes. A novel combined coprecipitation–oxidation method for iron recovery by Fe O nanoparticle production from the WPLs was developed in this study. An oxidation–reduction potential monitoring method was developed for real-time control of the Fe /Fe molar ratio. The key coprecipitation–oxidation parameters were determined using the orthogonal experimental design method. The use of promoters greatly improved the Fe O nanoparticle crystallinity, size, magnetization, and dispersion. X-ray diffraction patterns showed that the produced Fe O nanoparticles were single phase. The Fe O nanoparticles were approximately spherical and slightly agglomerated. Vibrating sample magnetometry showed that the Fe O nanoparticles produced from the WPLs had good magnetic properties, with a saturation magnetization of 80.206 emu·g and a remanence of 10.500 emu·g . The results show that this novel coprecipitation–oxidation method has great potential for recycling iron in WPLs.

Keywords: liquor     Coprecipitation–oxidation     Fe3O4 nanoparticles     Oxidation–reduction potential     Promoter    

A method for Absolute Protein Expression Quantity Measurement Employing Insulator RiboJ Article

Hongbin Yu, Zheng Wang, Hanyue Xu, Jiusi Guo, Qingge Ma, Xiangxu Mu, Yunzi Luo

Engineering 2018, Volume 4, Issue 6,   Pages 881-887 doi: 10.1016/j.eng.2018.09.012

Abstract:

Measuring the absolute protein expression quantity for a specific promoter is necessary in the fieldsThe strength of a promoter is traditionally characterized by measuring the fluorescent intensity of thefluorescent protein downstream of the promoter.Until now, measurement of the absolute protein expression quantity for a promoter, however, has beenUsing this method, we successfully measured nine constitutive promoters in the Anderson promoter family

Keywords: RiboJ     Promoter measurement     Synthetic biology    

Generation of CRISPR/Cas9-mediated lactoferrin-targeted mice by pronuclear injection of plasmid pX330

Mengxu GE,Fei LIU,Fei CHANG,Zhaolin SUN,Jing FEI,Ying GUO,Yunping DAI,Zhengquan YU,Yaofeng ZHAO,Ning LI,Qingyong MENG

Frontiers of Agricultural Science and Engineering 2015, Volume 2, Issue 3,   Pages 242-248 doi: 10.15302/J-FASE-2015059

Abstract: To further study the functions and mechanisms of lactoferrin, we modified the lactoferrin promoter ofSeven mice with lactoferrin promoter mutations were obtained with an efficiency of 24% (7/29) by injecting

Keywords: lactoferrin     promoter     CRISPR/Cas9     plasmid pX330    

Title Author Date Type Operation

Effect of a promoter on the methanation activity of a Mo-based sulfur-resistant catalyst

Can LIN, Haiyang WANG, Zhenhua LI, Baowei WANG, Xinbin MA, Shaodong QIN, Qi SUN

Journal Article

Osteopontin is a promoter for hepatocellular carcinoma metastasis: a summary of 10 years of studies

Lunxiu Qin

Journal Article

Cloning of human XAF1 gene promoter and assay of its transcription activity in a variety of cell lines

Qiong CHEN, Qing YU, Yuhu SONG, Peiyuan Li, Ying CHANG, Zhijun WANG, Lifeng LIU, Wei WU, Jusheng LIN

Journal Article

Distinct gene expression pattern of mutations coordinated by target repression and promoter hypermethylation

Journal Article

Construction, characterization and application of a genome-wide promoter library in

Ting Yuan,Yakun Guo,Junkai Dong,Tianyi Li,Tong Zhou,Kaiwen Sun,Mei Zhang,Qingyu Wu,Zhen Xie,Yizhi Cai,Limin Cao,Junbiao Dai

Journal Article

Effects of MgO promoter on properties of Ni/Al2O3 catalysts for partial oxidation of methane to syngas

QIU Yejun, CHEN Jixiang, ZHANG Jiyan

Journal Article

Progress in use of surfactant in nearly static conditions in natural gas hydrate formation

Zhen PAN, Yi WU, Liyan SHANG, Li ZHOU, Zhien ZHANG

Journal Article

Effects of Potassium and Manganese Promoters on Nitrogen-Doped Carbon Nanotube-Supported Iron Catalysts for CO2 Hydrogenation

Praewpilin Kangvansura, Ly May Chew, Chanapa Kongmark, Phatchada Santawaja, Holger Ruland, Wei Xia, Hans Schulz, Attera Worayingyong, Martin Muhler

Journal Article

Methanol to propylene: the effect of iridium and iron incorporation on the HZSM-5 catalyst

Alireza MOHAMMADREZAEI, Sadegh PAPARI, Mousa ASADI, Abas NADERIFAR, Reza GOLHOSSEINI

Journal Article

Progress in the Study of Triacontanol (TA) and the Prospect of Its Application in Agriculture

Liu Desheng,Zhang Qun,Lu Donghe

Journal Article

Efficient promotion of methane hydrate formation and elimination of foam generation using fluorinated surfactants

Quan CAO, Dongyan XU, Huanfei XU, Shengjun LUO, Rongbo GUO

Journal Article

Novel coprecipitation–oxidation method for recovering iron from steel waste pickling liquor

Shejiang Liu, Hongyang Yang, Yongkui Yang, Yupeng Guo, Yun Qi

Journal Article

A method for Absolute Protein Expression Quantity Measurement Employing Insulator RiboJ

Hongbin Yu, Zheng Wang, Hanyue Xu, Jiusi Guo, Qingge Ma, Xiangxu Mu, Yunzi Luo

Journal Article

Generation of CRISPR/Cas9-mediated lactoferrin-targeted mice by pronuclear injection of plasmid pX330

Mengxu GE,Fei LIU,Fei CHANG,Zhaolin SUN,Jing FEI,Ying GUO,Yunping DAI,Zhengquan YU,Yaofeng ZHAO,Ning LI,Qingyong MENG

Journal Article