Search results for: Qiao Ma

Items from 1 to 20 out of 59 results

article

Analysis of factors influencing carbon emissions of urban households: A case study of old urban community in northern China

Yue Xu, Qingsong Wang, Shu Tian, Yue Li, more

Sustainable Development > 32 > 4 > 3678 - 3694

CO₂ emissions reduction of urban residents is one of the main ways to mitigate climate change. Clarifying the key factors of carbon emissions can provide a reference basis for the government to formulate carbon reduction policies. The old urban community that widely exist in most cities in northern China is taken as the research object. Based on the fuzzy interpretive structural model and structural...

article

Multicity comparative assessment and optimized management path of sustainability of the economy–energy–environment system: A case study of core cities in China's three major economic circles

Yujie Zhang, Haichao Ma, Qingsong Wang, Yue Xu, more

Integrated Environmental Assessment and Management > 20 > 3 > 875 - 887

Coordinated and stable development of economy–energy–environment (3E) systems represents a long‐term strategy for the sustainable development of humankind. Following the research idea of “indicator system construction—3E system evaluation—obstacles identification—optimization management,” this article innovatively constructs a multiangle and comparable methodology system for evaluation and optimized...

article

How to further develop the integrated planting and breeding mode: A case study of the western region of Shandong Province

Yuan Xu, Guangrui Wang, Shuo Yang, Mingqiang Liu, more

Sustainable Development > 31 > 4 > 3128 - 3143

Under the climate change aggravating the issues of energy security and food shortage, global agriculture suffers from great pressure, and how to promote sustainable agriculture has become one of the hot issues of concern in academia. This paper focuses on China, where efforts are being made to develop sustainable agriculture, and takes the western part of Shandong Province as the target of study....

article

Stereoselective Palladium‐Catalyzed C−F Bond Alkynylation of Tetrasubstituted gem‐Difluoroalkenes

Qiao Ma, Yanhui Wang, Gavin Chit Tsui

Angewandte Chemie International Edition > 59 > 28 > 11293 - 11297

A stereoselective Pd(PPh₃)₄‐catalyzed C−F bond alkynylation of tetrasubstituted gem‐difluoroalkenes with terminal alkynes has been developed. This method gives access to a great variety of conjugated monofluoroenynes bearing a tetrasubstituted alkene moiety with well‐defined stereochemistry. Chelation‐assisted oxidative addition of Pd to the C−F bond is proposed to account for the high level of stereocontrol...

article

Stereoselective Palladium‐Catalyzed C−F Bond Alkynylation of Tetrasubstituted gem‐Difluoroalkenes

Qiao Ma, Yanhui Wang, Gavin Chit Tsui

Angewandte Chemie > 132 > 28 > 11389 - 11393

article

Application of an efficient indole oxygenase system from Cupriavidus sp. SHE for indigo production

Chunxiao Dai, Qiao Ma, Yan Li, Duandi Zhou, more

Bioprocess and Biosystems Engineering > 2019 > 42 > 12 > 1963-1971

Indigo, one of the most widely used dyes, is mainly produced by chemical processes, which generate amounts of pollutants and need high energy consumption. Microbial production of indigo from indole has attracted much attention; however, the indole oxygenase has never been explored and applied for indigo production. In the present study, the indole oxygenase indAB genes were successfully cloned from...

article

Environmental and economic impact assessment of the alumina–carbon refractory production in China

Yuzhou Tang, Yifei Shi, Yue Li, Xueliang Yuan, more

Clean Technologies and Environmental Policy > 2019 > 21 > 9 > 1723-1737

Continuous casting technology is extensively used in steel production. Refractory materials made from alumina–carbon (Al₂O₃–C) are integral to the continuous casting process to ensure high-quality steel product. However, the production of Al₂O₃–C refractory material itself is the source of a range of environmental problems. Life cycle assessment and life cycle cost methods are applied to compare and...

article

Characterization of biogenic selenium nanoparticles derived from cell-free extracts of a novel yeast Magnusiomyces ingens

Shengyang Lian, Catherine Sekyerebea Diko, Yongquan Yan, Zheng Li, more

00003 Biotech > 2019 > 9 > 6 > 1-8

A facile one-pot and effective green process for biogenic selenium nanoparticles (SeNPs) was obtained using the cell-free extracts of a novel yeast Magnusiomyces ingens LH-F1. The corresponding absorption peak of SeNPs was observed at ~ 560 nm by UV–vis spectrophotometer. In the present study, SeO₂ 2 mM, protein 500 mg L⁻¹ and pH 7 were preferable to the biosynthesis of SeNPs. The effects of pH, SeO...

article

Tre2 (USP6NL) promotes colorectal cancer cell proliferation via Wnt/β-catenin pathway

Kang Sun, Song-Bing He, Yi-Zhou Yao, Jian-Guo Qu, more

Cancer Cell International > 2019 > 19 > 1 > 1-12

Background Most colorectal cancer (CRC) patients are diagnosed at an advanced or metastatic stage with poor prognosis. Ubiquitin-specific protease 6 N-terminal-like protein (USP6NL) with high expression in CRC tissues regulates CRC cell proliferation via Wnt/β-catenin pathway. We hypothesized that USP6NL impacts CRC growth and inhibition of USP6NL may be a novel treatment strategy to improve CRC therapy...

article

A novel environmental fate of graphene oxide: Biodegradation by a bacterium Labrys sp. WJW to support growth

Yuanyuan Qu, Jingwei Wang, Qiao Ma, Wenli Shen, more

Water Research > 2018 > 143 > C > 260-269

Graphene oxide (GO) is a new type of nanomaterial with unique physicochemical properties and diverse applications, whereas it poses potential risk to human and environment. By screening from natural soil exposed to GO in the laboratory, we successfully obtained a novel bacterium, Labrys sp. WJW, which was able to use GO as the sole carbon source for growth. Within 8 days, cell numbers increased 16...

article

Bioremediation of nitrogen‐containing organic pollutants using phenol‐stimulated activated sludge: performance and microbial community analysis

Xuwang Zhang, Yuanyuan Qu, Shengnan You, Qiao Ma, more

Journal of Chemical Technology & Biotechnology > 93 > 11 > 3199 - 3207

BACKGROUND Coking wastewater generally contains high levels of phenolics and nitrogen‐containing organic pollutants, thus seeking an appropriate wastewater treatment strategy is necessary. In this study, the triplicate phenol‐stimulated activated sludges (group C) were constructed for aerobic treatment of nitrogen‐containing organic pollutants (indole, pyridine and quinoline), and glucose‐stimulated...

article

Numerical analysis of operating conditions for establishing high-density circulating fluidized bed by CPFD method

Qiao Ma, Fulin Lei, Yunhan Xiao

Powder Technology > 2018 > 338 > C > 446-457

The effects of operating conditions on the gas-solid hydrodynamics in a high-density CFB are numerically studied using the computational particle fluid dynamics approach. With the increase of standpipe bottom aeration rate, the solids circulation rate increases within the range of stable operation, while the packed bed height in the standpipe decreases. The same tendency is found for the standpipe...

article

Research on Nonlinear Dynamic Simulation and Fatigue Reliability Life Prediction for Synthesis Transmission System of Self-Propelled Gun

Guibo Yu, Lijun Cao, Shuhai Wang, Qiao Ma

Journal of Shanghai Jiaotong University (Science) > 2018 > 23 > 6 > 776-783

Aiming to the puzzle that the inner load of nonlinear synthesis transmission system is difficult to obtain, a new kind of virtual prototype establishment and simulation method is put forward. The influence on nonlinear vibration with flexible rotor, bearing backlash is analyzed based on a virtual prototype. To validate the virtual prototype of nonlinear gear transmission system, the corresponding...

article

Performance and Microbial Community Analysis of Bioaugmented Activated Sludge System for Indigo Production from Indole

Xuwang Zhang, Yuanyuan Qu, Qiao Ma, Shuzhen Li, more

Applied Biochemistry and Biotechnology > 2019 > 187 > 4 > 1437-1447

Indole is a typical nitrogen-containing aromatic pollutant in coking wastewater, and it can be used for the microbial production of indigo, one of the oldest dyestuffs. In this study, the activated sludge system bioaugmented with two indigo-producing bacterial strains, wild strain Comamonas sp. MQ and recombinant Escherichia coli (ND_IND), was constructed to investigate indigo bioproduction from indole...

article

Comparison of gold nanoparticles biosynthesized by cell-free extracts of Labrys, Trichosporon montevideense, and Aspergillus

Wenli Shen, Yuanyuan Qu, Xuanying Li, Xiaofang Pei, more

Environmental Science and Pollution Research > 2018 > 25 > 14 > 13626- 13632

Biosynthesis of gold nanoparticles (AuNPs) by microbes has received much attention as an efficient and eco-friendly process. However, the characteristics of AuNPs biosynthesized by different microbial cell-free extracts are rarely comparatively studied. In this study, three locally isolated strains, i.e., bacteria Labrys sp. WJW, yeast Trichosporon montevideense WIN, and filamentous fungus Aspergillus...

article

Unveiling the biotransformation mechanism of indole in a Cupriavidus sp. strain

Yuanyuan Qu, Qiao Ma, Ziyan Liu, Weiwei Wang, more

Molecular Microbiology > 106 > 6 > 905 - 918

Indole, an important signaling molecule as well as a typical N‐heterocyclic aromatic pollutant, is widespread in nature. However, the biotransformation mechanisms of indole are still poorly studied. Here, we sought to unlock the genetic determinants of indole biotransformation in strain Cupriavidus sp. SHE based on genomics, proteomics and functional studies. A total of 177 proteins were notably altered...

article

Three-dimensional full-loop simulation of a high-density CFB with standpipe aeration experiments

Qiao Ma, Fulin Lei, Xiang Xu, Yunhan Xiao

Powder Technology > 2017 > 320 > C > 574-585

Three-dimensional full-loop simulation of a high-density circulating fluidized bed (HDCFB) is conducted using the multiphase particle-in-cell (MP-PIC) method. The computational results are in good agreement with the experimental data of pressure distribution and solids circulation rate under different aeration conditions of the standpipe. The main feature of gas-solid flow in the riser is qualitatively...

article

Factors associated with trait anger level of juvenile offenders in Hubei province: A binary logistic regression analysis

Li-na Tang, Xiao-zhou Ye, Qiu-ge Yan, Hong-juan Chang, more

Journal of Huazhong University of Science and Technology [Medical Sciences] > 2017 > 37 > 1 > 20-24

Summary The risk factors of high trait anger of juvenile offenders were explored through questionnaire study in a youth correctional facility of Hubei province, China. A total of 1090 juvenile offenders in Hubei province were investigated by self-compiled social-demographic questionnaire, Childhood Trauma Questionnaire (CTQ), and State-Trait Anger Expression Inventory-II (STAXI-II). The risk factors...

article

Long-term successional dynamics of microbial association networks in anaerobic digestion processes

Linwei Wu, Yunfeng Yang, Si Chen, Mengxin Zhao, more

Water Research > 2016 > 104 > C > 1-10

It is of great interest to elucidate underlying mechanisms to maintain stability of anaerobic digestion, an important process in waste treatment. By operating triplicate anaerobic digesters continuously for two years, we found that microbial community composition shifted over time despite stable process performance. Using an association network analysis to evaluate microbial interactions, we detected...

article

Illumina MiSeq sequencing reveals long-term impacts of single-walled carbon nanotubes on microbial communities of wastewater treatment systems

Yuanyuan Qu, Xuwang Zhang, Wenli Shen, Qiao Ma, more

Bioresource Technology > 2016 > 211 > C > 209-215

In this study, phenol wastewater treatment systems treated with different concentrations of single-walled carbon nanotubes (SWCNTs) (0–3.5g/L) were exposed to phenol and carbon nanotubes (CNTs) shock loadings to investigate the long-term impacts of SWCNTs on microbial communities. Phenol removal remained high efficiency (>98%) in SWCNTs-treated groups but decreased in non-treated group (85.1±1...

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INFONA - science communication portal

Search results for: Qiao Ma

Analysis of factors influencing carbon emissions of urban households: A case study of old urban community in northern China

Multicity comparative assessment and optimized management path of sustainability of the economy–energy–environment system: A case study of core cities in China's three major economic circles

How to further develop the integrated planting and breeding mode: A case study of the western region of Shandong Province

Stereoselective Palladium‐Catalyzed C−F Bond Alkynylation of Tetrasubstituted gem‐Difluoroalkenes

Stereoselective Palladium‐Catalyzed C−F Bond Alkynylation of Tetrasubstituted gem‐Difluoroalkenes

Application of an efficient indole oxygenase system from Cupriavidus sp. SHE for indigo production

Environmental and economic impact assessment of the alumina–carbon refractory production in China

Characterization of biogenic selenium nanoparticles derived from cell-free extracts of a novel yeast Magnusiomyces ingens

Tre2 (USP6NL) promotes colorectal cancer cell proliferation via Wnt/β-catenin pathway

A novel environmental fate of graphene oxide: Biodegradation by a bacterium Labrys sp. WJW to support growth

Bioremediation of nitrogen‐containing organic pollutants using phenol‐stimulated activated sludge: performance and microbial community analysis

Numerical analysis of operating conditions for establishing high-density circulating fluidized bed by CPFD method

Research on Nonlinear Dynamic Simulation and Fatigue Reliability Life Prediction for Synthesis Transmission System of Self-Propelled Gun

Performance and Microbial Community Analysis of Bioaugmented Activated Sludge System for Indigo Production from Indole

Comparison of gold nanoparticles biosynthesized by cell-free extracts of Labrys, Trichosporon montevideense, and Aspergillus

Unveiling the biotransformation mechanism of indole in a Cupriavidus sp. strain

Three-dimensional full-loop simulation of a high-density CFB with standpipe aeration experiments

Factors associated with trait anger level of juvenile offenders in Hubei province: A binary logistic regression analysis

Long-term successional dynamics of microbial association networks in anaerobic digestion processes

Illumina MiSeq sequencing reveals long-term impacts of single-walled carbon nanotubes on microbial communities of wastewater treatment systems

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