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Chinese Journal of Chemical Engineering 2019年第7期27卷 1659-1665页

作者： Chang Liu Lin Qi Songyuan Yang Yun He Xiaoqiang Jia Department of Biochemical Engineering School of Chemical Engineering and TechnologyTianjin UniversityTianjin 300072China Key Laboratory of Systems Bioengineering (Tianjin University) Ministry of EducationTianjin 300072China SynBio Research Platform Collaborative Innovation Center of Chemical Science and EngineeringTianjin 300072China

Concerns about feasibility,separability,settleability,efficiency once hampered studies on polyhydroxyalkanoates(PHAs)production,which mainly focused on single strain microorganism or activated sludge rather than artificial microbial ***,a medium chain length PHAs(mcl-PHAs)producing Pseudomonas-Saccharomyces consortium with xylose as the main substrate was ***-PHAs accumulation increased from 12.69 mg·L^-1 to 152.3 mg·L^-1 without any optimization *** presence of Saccharomyces cerevisiae,though in a relatively low concentration,improved the sedimentation of cell mass of the mixed culture by 60%.Reasons for better sedimentation of the consortium were complex:first,the length of Pseudomonas putida increased two to three times in the consortium;second,the positive surface charge of *** was neutralized by ***;third,the adhesion proteins on the surface of *** interacted with the ***.

关键词： Medium chain length polyhydroxyalkanoates Pseudomonas–Saccharomyces consortium Sedimentation Xylose

New instant confirmation mechanism based on interactive incontestable signature in consortium blockchain

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Frontiers of Computer Science 2019年第6期13卷 1182-1197页

作者： Yan ZHU Khaled RIAD Ruiqi GUO Guohua GAN Rongquan FENG School of Computer&Communication Engineering University of Science and Technology BeijingBeijing 100083China Mathematics Department Faculty of ScienceZagazig UniversityZagazig 44519Egypt School of Mathematical Sciences Peking UniversityBeijing 100871China

The blockchain is a radical innovation that has a considerable effect on payments,stock exchanges,cybersecurity,and computational ***,its limitations in terms of the uncertainty involved in transaction confirmation are *** this paper,we describe the design of a decentralized voting protocol for the election of a block generator in a consortium blockchain and propose a new system framework that allows fast and exact confirmation of all *** addition,to replace a transaction’s owner signature,a new interactive incontestable signature between the dealer and owner is used to confirm a *** means of this signature,the dealer can assure the owner that a transaction will be permanently included in the blockchain in a non-repudiation ***,the signatures of all transactions in a block share only one witness that provides membership proof between the block and these ***,a security and performance analysis shows that the proposed schemes are provably secure and highly efficient.

关键词： security blockchain signature consortium interactive proof

A novel strategy for gas mitigation during swine manure odour treatment using seaweed and a microbial consortium

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Frontiers of Environmental Science & Engineering 2020年第3期14卷 203-214页

作者： Madhavaraj Lavanya Ho-Dong Lim Kong-Min Kim Dae-Hyuk Kim Balasubramani Ravindran Gui Hwan Han Center for Industrialization of Agricultural and Livestock Microorganisms(CIALM) Jeongeup-si 56212Republic of Korea Department of Molecular Biology Institute for Molecular Biology and GeneticsJeonbuk National UniversityJeonju 561-756Republic of Korea Department of Environmental Energy&Engineering Kyonggi UniversitySuwon-si 16227Republic of Korea

Gas emissions from swine farms have an impact on air quality in the Republic of *** manure stored in deep pits for a long time is a major source of harmful gas ***,we evaluated the mitigation of emissions of ammonia(N H 3),hydrogen sulfide(H2S)and amine gases from swine manure with biological products such as seaweed(Sargassum homeri)and a microbial consortium(Bacillus subtilis(1.2×10^9 CFU/mL),Thiobacillus sp.(1.0×10^10 CFU/mL)and Saccharomyces cerevisiae(2.0×10^9 CFU/mL))used as additives due to their promising benefits for nutrient ***,seaweed powder masking over two days provided notable control of over 98%-100%of the gas ***,significant control of gas emissions was especially pronounced when seaweed powder masking along with a microbial consortium was applied,resulting in a gas reduction rate of 100%for NH 3,amines and H2S over 10 days of *** results also suggested that seaweed powder masking and a microbial consortium used in combination to reduce the gas emissions from swine manure reduced odour compared with that observed when the two additives were used *** the consortium,seaweed decreased total volatile fatty acid(VFA)*** proposed novel method of masking with a microbial consortium is promising for mitigating hazardous gases,simple,and environmentally *** research is warranted to determine the mechanisms underlying the seaweed and substrate interactions.

关键词： Seaweed consortium Mitigation Ammonia H2S Volatile fatty acids(VFAs)

A consortium Blockchain Paradigm on Hyperledger-Based Peer-to-Peer Lending System

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China Communications 2019年第8期16卷 38-50页

作者： Xueyun Zeng Ninghua Hao Junchen Zheng Xuening Xu School of Economics and Management Beijing University of Posts and Telecommunications

This paper focuses on how to use consortium blockchain to improve the regulation of peer-to-peer(P2 P) lending market. The partial decentralized consortium blockchain with limited pre-set nodes can well improve transparency and security, which is suitable for financial regulation. Considering irregularities of the P2P lending market, the Hyperledger-based Peer-to-Peer Lending System(HyperP2PLS) is proposed. First elaborate the application scenario and business logic of the system, where a national P2P Lending Trading Center will be established to integrate all transactions and information of P2P lending market. Then construct the system architecture consisting of the blockchain network, HTTP server, and applications. The algorithm of implementation process and the web application for users have been well illustrated. The performance analysis shows that HyperP2PLS can guarantee the reliability, safety, transparency and efficiency.

关键词： consortium blockchain hyperledger financial regulation peer-to-peer lending

Exploration of the key microbes and composition stability of microbial consortium GF-20 with efficiently decomposes corn stover at low temperatures

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Journal of Integrative Agriculture 2019年第8期18卷 1893-1904页

作者： YU Xiao-fang BORJIGIN Qinggeer GAO Ju-lin WANG Zhi-gang HU Shu-ping BORJIGIN Naoganchaolu WANG Zhen SUN Ji-ying HAN Sheng-cai Agricultural College Inner Mongolia Agricultural University

The microbial consortium GF-20(GF-20) can efficiently decompose corn stover at low temperatures. The present study explored the key microbes of GF-20 and evaluated different culture conditions on its composition stability to promote the utilization of corn stover decomposing microbes in low temperature regions. GF-20 was subcultured to the 15 th generation under different temperatures, pHs, carbon, and nitrogen sources. Then, the dynamics of fermenting pH, cellulose enzyme activities, carbohydrate concentration, and oxidation reduction potential were determined to estimate the degradation efficiency of corn stover with GF-20. Furthermore, the structural stability and functional microbes of GF-20 were identified on the basis of PCR-denaturing gradient gel electrophoresis(DGGE) profiling and principal component analysis. The results showed that the offspring of GF-20 subcultured under different temperatures(4–30°C) and pH(6.0–9.0) conditions maintained stable growth, decomposition function, and composition structure. Furthermore, consortia GF-20 had a stable composition structure, which induced GF-20 to secrete cellulose and promote substrate decomposition as corn stover and ammonium were used as sources of carbon and nitrogen, respectively. According to the PCR-DGGE profiles, the key strains of GF-20 were determined to be Bacillus licheniformis, Cellvibrio mixtus subsp. mixtus, Bacillus tequilensis, Clostridium populeti, and Clostridium xylanolyticum.

关键词： microbial consortium decomposition of corn stalks low temperature functional microbe structure stability

Isolation and Characteristics of a Microbial consortium for Effectively Degrading Phenanthrene

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Petroleum Science 2007年第3期4卷 68-75页

作者： Wang Jing Xu Hongke Guo Shaohui School of Chemical Science ＆ Engineering China University of Petroleum Beijing 102249 China

A microbial consortium （named W4） capable of aerobic biodegradation of solid phenanthrene as the sole source of carbon and energy was isolated by selective enrichment from petroleum-contaminated soil in the Henan oilfield, China. The strains of the consortium were identified as Sphingomonas cloacae, Rhizobium sp., Pseudomonas aeruginosa and Achromobacter xylosoxidans respectively by means of genetic methods. The major metabolites of phenanthrene were analyzed by gas chromatography-mass spectrometry （GC-MS）. The biodegradation percentage of solid phenanthrene at 200 mg/L in liquid medium after 7 days of growth was greater than 99%. The degradation of phenanthrene was compared between individual predominant strains and the microbial consortium in different treatment processes. The microbial consortium showed a significant improvement of phenanthrene degradation rates in either static or shaking culture. The degradation percentage of phenanthrene by the consortium W4 decreased to some degree when C 16 coexisted, however it was hardly affected by C30. Furthermore, the ability of consortium W4 to remediate oil sludge from the Dagang oil refinery was studied by composting, and it was found that the consortium W4 could obviously remove polycyclic aromatic hydrocarbons （PAils） and paraffinic hydrocarbons. All the results indicated that the microbial consortium W4 had a promising application in bioremediation of oil-contaminated environments and could be potentially used in microbial enhanced oil recovery （MEOR）.

关键词： Phenanthrene consortium biodegradation bioremediation

consortium Led by CNPC Takes over Rumaila Oilfield

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China Chemical Reporter 2010年第14期21卷 12-12页

On July 1st,the operational management of Iraq’s Rumaila project wasofficially transferred to Rumaila Field Operating Organization (ROO),a consortium led by China National Petroleum Corporation (CNPC).CNPC,BP and Iraq’s South Oil Company held a ceremony at Basra July3rd for officially taking over the oilfield and the commencement of oilfieldoperations.

关键词： CNPC consortium ceremony Petroleum oilfield consor

A consortium Led by PetroChina Operates Halfaya Oilfield in Iraq

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China Chemical Reporter 2010年第3期21卷 11-11页

A consortium led by PetroChina CompanyLimited (SH:601857;HK:0857;NYSE:PTR) has bidden for the Halfaya Oilfield *** consortium including PetroChina,Total,Petronas and Iraq’s South Oil Companyformed a joint operator-sh... 详细信息

关键词： consortium consortium concerning holding reserve c

Culturing of Autoflocculating Microalgal consortium in Continuous Raceway Pond Reactor

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American Journal of Plant Sciences 2015年第15期6卷 2472-2480页

作者： Chandrasekharan Nair Aneesh Faisal Mullalayam Vattackatt Balakrishnan Manilal Ajit Haridas Process Engineering and Environmental Technology Division National Institute for Interdisciplinary Science and Technology (NIIST-CSIR) Thiruvananthapuram India

The goal of this study was to develop a self-settling microalgal consortium in raceway pond reactor (RPR). Experiments were carried out with cultures that developed without additional seeding, but naturally promoted by process conditions in a raceway pond reactor. The changes in microalgal communities and total biomass under nitrogen and phosphorous limitations were studied in both batch and continuous systems. At the steady state batch had the population of 46% Euglena sp., 16% Closterium sp., 14% Chlorella sp., 14% Scenedesmus sp. and 10% Ankistrodesmus sp. with a maximum biomass of 900 mg/L. In order to get self-settling microalgal consortium, the operation was changed to continuous continuous mode with the aid of a specially designed settler for daily harvest and recycling of the biomass. Grazing fauna could be controlled by managing reduced liquid and solid retention time. At steady-state condition, an autofloculating and self-settling consortium was developed which had mainly Fragilaria sp., Scenedesmus sp., and filamentous Ulothrix sp. The maximum biomass concentration obtained was 140 mg/L. The presence of neutral lipid droplets in the consortium was identified by staining with Nile Red. Development of the lipid rich consortium could be a suitable method for producing biofuel.

关键词： Self-Settling Microalgal consortium Raceway Pond Reactor Autoflocculating

Hanbon (Jiangyin)Received consortium Loan to Finance PTA Project

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China Chemical Reporter 2009年第10期20卷 11-11页

Hanbon (Jiangyin) Petrochemical Co., Ltd. signed an agreement with banks on March 18thto get consortium loan of RMB 1.2 billion for financing its ongoing purified terephthalicacid (PTA) project in Jiangyin, Jiangsu pr... 详细信息

关键词： consortium Jiangsu consortium signed banks financi