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中国传统文化 2

可持续发展 2

大菱鲆 2

海洋鱼类增殖和养殖 2

混合基质膜 2

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Mixed culture of

Kishore Gopalakrishnan, Javad Roostaei, Yongli Zhang

《环境科学与工程前沿（英文）》 2018年第12卷第4期 doi: 10.1007/s11783-018-1075-2

摘要：

RSM is used to explore the impact of different parameter on algal growth response.

Mixed algal culture promotes algal biomass and lipid accumulation.

Optimized conditions achieve maximum productivity of algal biomass and lipid.

关键词： Algal biofuels Algal mixed cultures Algal biomass Algal lipid Wastewater Response surface methodology

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Investigation of polyhydroxyalkanoates (PHAs) biosynthesis from mixed culture enriched by valerate-dominant

Jiuxiao Hao, Xiujin Wang, Hui Wang

《环境科学与工程前沿（英文）》 2017年第11卷第1期 doi: 10.1007/s11783-017-0896-8

摘要： Valerate-hydrolysate enriched culture showed great ability to produce 3HV and 3H2MV. Valerate-hydrolysate enriched culture had more in the community. Mixed iso-/n-valerate was effective at balancing microbial growth and PHAs synthesis. Co-substrates of valerate and propionate raised the fraction of 3HV and 3H2MV. The production of polyhydroxyalkanoates (PHAs) with a high fraction of 3-hydroxyvalerate (3HV) and 3-hydroxy-2-methylvalerate (3H2MV) from mixed culture enriched by valerate-dominant hydrolysate was evaluated in this study. After long-term enrichment, the culture showed strong ability to synthesize 3HV and 3H2MV, even with acetate-dominant substrate. The ultilization of single or mixed iso-/n-valerate by the enriched culture showed that the mixture of iso-valerate and n-valerate was more efficient substrate than any single in terms of balancing microbial growth and PHAs synthesis. Besides, through comparing the kinetics and stoichiometry of the tests supplying valerate and propionate, the enriched culture with equivalent valerate and propionate (1:1 molar ratio) exhibited superior PHAs production performances to pure valerate or propionate, attaining more than 70 mol% of 3HV and 3H2MV. The above findings reveal that valerate-dominant hydrolysate is a kind of suitable substrate to enrich PHAs producing culture with great capability to synthesize 3HV and 3H2MV monomers, thus improving product properties than pure poly(3-hydroxybutyrate) (P3HB); also 3HV and 3H2MV production behaviors can be regulated by the type of odd-carbon VFAs in the substrate.

关键词： Polyhydroxyalkanoates (PHAs) Valerate Mixed culture 3-hydroxyvalerate (3HV) Propionate

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Scrap Iron Filings assisted nitrate and phosphate removal in low C/N waters using mixed microbial culture

《环境科学与工程前沿（英文）》 2021年第15卷第4期 doi: 10.1007/s11783-020-1358-2

摘要：

• Microbes enhance denitrification under varying DO concentrations and SIF dosages.

关键词： Scrap iron filing Nitrate removal Phosphate removal Mixed culture denitrification Zero valent iron

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Reconsideration on the effect of nitrogen on mixed culture polyhydroxyalkanoate production toward high

Zhiqiang Chen, Lizhi Zhao, Ye Ji, Qinxue Wen, Long Huang

《环境科学与工程前沿（英文）》 2019年第13卷第4期 doi: 10.1007/s11783-019-1135-2

摘要：

Effect of nitrogen on mixed culture PHA production was reconsidered.

Enrichment history of PHA accumulating culture was discussed.

Higher PHA content and biomass growth were achieved in presence of nitrogen.

Enrichment strategy toward higher PHA accumulation was investigated.

Microbial community succession in PHA accumulation phase was investigated.

关键词： Polyhydroxyalkanoate (PHA) Organic loading rate Nitrogen content Biomass growth Enrichment history

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The comparative study of dwelling houses in the southwest multi-ethnic region, taking Fugong county for example

Fang WANG, Jiaping LIU

《结构与土木工程前沿（英文）》 2010年第4卷第4期页码 474-482 doi: 10.1007/s11709-010-0089-z

摘要： A number of ethnic minorities are being distributed in southwest China. Yunnan Province is an area inhabited by multi-ethnic groups. For a long time, the ethnic groups have been interacted by others in the cultural aspect, while retaining their own ethnic traditions. The performances of ethnic groups’ dwelling houses are similar as determined by natural and cultural elements of the same area. This paper mainly analyzes decisive factors behind similar appearances by the way of field research on two minorities, Nu ethnic group and Li-su ethnic group, in the Fugong county, Nujiang Li-su autonomous prefecture. Moreover, the paper tries to summarize the commonality and individuality of the minorities in order to provide useful theoretical reference for the minorities building of new socialist countryside in the future.

关键词： Nu ethnic group Li-su ethnic group mixed region living culture living mode living acts

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科技自主创新与中西文化互补之我见——六个典型实例的思考

李世煇

《中国工程科学》 2005年第7卷第4期页码 11-21

摘要：

从中西文化互补的角度，考察了20世纪70年代以来中国科技原始性自主创新的六个典型实例，简述了笔者从事典型信息法研究的几点认识，试图以事实论证：中国传统文化对当代科技自主创新有重大作用，并对其表现形式等做了初步考察。

关键词：中国传统文化西方文化互补科技自主创新典型实例

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Key stakeholders’ perspectives on the ideal partnering culture in construction projects

Gunnar J. LÜHR, Marian G. C. BOSCH-REKVELDT, Mladen RADUJKOVIC

《工程管理前沿（英文）》 2022年第9卷第2期页码 312-325 doi: 10.1007/s42524-020-0135-z

摘要： This paper examines the current state of project cultures in the German turnkey construction industry and the ideal project cultures in terms of partnering from the perspective of various key stakeholders (i.e., Investors, General Contractors, (Sub-)Contractors and Designers). To investigate the current and ideal cultures, data were gathered among the key stakeholders by means of a survey study with 72 respondents divided over 12 companies. The respondents rated the current and desired cultures by using the Organizational Culture Assessment Instrument, which belongs to the Competing Values Framework. The investigations show many similarities and differences between the stakeholder perspectives of the current and the idealized partnering project cultures. Mainly, the General Contractors desire more cooperative behaviors than the (Sub-)Contractors, and the Investors desire more pronounced flexibility than the General Contractors. All stakeholders desire a cultural change from highly competitive behaviors toward more cooperation. Changes in terms of clear procedures or more flexibility are only desired by the Designers. Defining both the current and an ideal partnering project culture enables academics and project managers to compare their actual project cultures to an ideal situation. With such an approach, academics and project managers could measure whether new tools or changes in resources affect their project cultures toward a partnering project culture.

关键词： project culture organisational culture partnering construction culture stakeholder perspectives German

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Iteration framework for solving mixed lubrication computation problems

《机械工程前沿（英文）》 2021年第16卷第3期页码 635-648 doi: 10.1007/s11465-021-0632-8

摘要： The general discrete scheme of time-varying Reynolds equation loses the information of the previous step, which makes it unreasonable. A discretization formula of the Reynolds equation, which is based on the Crank–Nicolson method, is proposed considering the physical message of the previous step. Gauss–Seidel relaxation and distribution relaxation are adopted for the linear operators of pressure during the numerical solution procedure. In addition to the convergent criteria of pressure distribution and load, an estimation framework is developed to investigate the relative error of the most important term in the Reynolds equation. Smooth surface with full contacts and mixed elastohydrodynamic lubrication is tested for validation. The asperity contact and sinusoidal wavy surface are examined by the proposed discrete scheme. Results show the precipitous decline in the boundary of the contact area. The relative error suggests that the pressure distribution is reliable and reflects the accuracy and effectiveness of the developed method.

关键词： mixed lubrication discretization formula relative error Reynolds equation asperity

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Perspective of mixed matrix membranes for carbon capture

Shinji Kanehashi, Colin A. Scholes

《化学科学与工程前沿（英文）》 2020年第14卷第3期页码 460-469 doi: 10.1007/s11705-019-1881-5

摘要： Polymeric membrane-based gas separation has found wide applications in industry, such as carbon capture, hydrogen recovery, natural gas sweetening, as well as oxygen enrichment. Commercial gas separation membranes are required to have high gas permeability and selectivity, while being cost-effective to process. Mixed matrix membranes (MMMs) have a composite structure that consists of polymers and fillers, therefore featuring the advantages of both materials. Much effort has been made to improve the gas separation performance of MMMs as well as general membrane properties, such as mechanical strength and thermal stability. This perspective describes potential use of MMMs for carbon capture applications, explores their limitations in fabrication and methods to overcome them, and addresses their performance under industry gas conditions.

关键词： membranes polymeric mixed matrix impurities

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Construction engineering management culture shift: Is the lowest tender offer dead?

Eric SCHEEPBOUWER, Douglas D. GRANSBERG, Carla Lopez del PUERTO

《工程管理前沿（英文）》 2017年第4卷第1期页码 49-57 doi: 10.15302/J-FEM-2017014

摘要： The procurement of public construction projects must walk a fine line between the corruption of state officials and collusion of contractors. The method of awarding projects to the lowest responsible tenderer was originally implemented to guard against corruption of state officials. However, an investigation of the construction industry in the Canadian province of Quebec showed that lowest-tender-offer procurement gave rise to collusion of companies tendering for the contracts. Alternatively, best-value procurement has been used for decades, but here problems arise owing to the necessity of subjective judging of measures other than price to compare bids, giving rise to time- and money-consuming protests. The paper proposes a compelling argument that the construction engineering management (CEM) culture should refocus its efforts on enhancing project cost certainty rather than merely searching for means to design a project in a manner that produces the lowest initial cost, and awards the construction to the lowest tender offer that focuses on cost savings during the project development and delivery process. The difference in the two approaches is subtle but extremely important. To make the transition, the engineering management tools must be advanced to the next level. This means that all project control tools for managing cost, schedule, and technical scope must be transformed from working in the deterministic mode to the stochastic mode, thus making the probability of completing the project within or below its official budget the primary decision criterion. To do so, CEMs must accept that there is a benefit in paying more for an alternative that increases cost certainty for the entire project. The authors of this paper hope that it will provide the grist for a more general dialog across all industry sectors where engineering management is practiced.

关键词： cost certainty lowest responsible bid best value public procurement construction engineering management culture

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苏通大桥工程文化建设实践与经验

俞春生,姚蓓,王茜

《中国工程科学》 2009年第11卷第3期页码 92-96

摘要：

在我国大型工程建设管理的过程中审时度势地融入文化的力量，必将为我国工程建设管理注入活力。工程文化是工程内容与文化形式有机统一的综合体，由于工程的时限性与一次性，使得工程文化体系的建设带有特殊性，通过对苏通大桥工程文化体系建设过程的研究，肯定了大型工程文化建设是工程管理的软实力，同时也在深入分析的基础上，对大型工程建设中构建工程文化体系进行了较为系统的思考，包括工程文化内涵的深刻认识、工程文化建设的原则、工程文化建设的内容以及如何有效地使工程文化快速形成和有效渗透等方面，为后续大型工程文化体系的建设提供了参

关键词：苏通大桥工程文化大型工程文化体系建设系统思维

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Studies on culture condition of new marine bacterium sp. SY01

LAN Wenjian, MO Linfeng, LI Houjin, CAI Chuanghua, ZHOU Yipin, YAO Junhua

《化学科学与工程前沿（英文）》 2008年第2卷第4期页码 443-446 doi: 10.1007/s11705-008-0065-5

摘要： New marine bacterium sp. SY01, producer of prodigiosin, was isolated from the seawaters of Sanya Bay. The culture conditions of this bacterium were investigated. sp. SY01 was cultured in 2216E media which contained tryptophan, histidine, lactonic acid, camphor, limonene, casein, diphenyl guanidine, coumarin and 1,3-dinitrobenzene, respectively. After 5 days cultivation, the extracts of different culture broths were detected by direct infusion mass spectroscopy using positive ESI mode. As the results, tryptophan, histidine and casein didn’t show any observable influences on the biosynthesis of prodigiosin. Lactonic acid, camphor, limonene, diphenyl guanidine, coumarin could inhibit the bacterium growth and prodigiosin biosynthesis to a certain extent, slower the culture broth to turn red. However, 1, 3-dinitrobenzene inhibited the bacteria to produce prodigiosin completely. MS data suggested that various metabolites with chemodiversity were produced in different culture media. In particular, a series of high-molecular-weight compounds with high relative abundances were observed in the medium containing limonene. To further optimize the culture condition, more new prodigiosin analogues and lead compounds can be obtained and the goal of “one strain-many compounds” can be achieved.

关键词： producer high-molecular-weight relative culture different culture

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我国先进汽车文化发展研究

俞宁,乔英俊,胡卫国,杨沿平,陈志林,黄威

《中国工程科学》 2018年第20卷第1期页码 139-143 doi: 10.15302/J-SSCAE-2018.01.020

摘要：

我国进入汽车社会和建设汽车强国迫切需要有先进的汽车文化。本文在分析论述了建设先进汽车文化重要性的基础上，对我国汽车文化的现状及存在的问题进行了分析，明确了我国建设先进汽车文化的目标及指导思想，提出了发展先进汽车文化的路径，这些都将有利于我国汽车文化的发展壮大。

关键词：汽车文化先进文化中国特色发展路径

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new regeneration approach to cation resins with aluminum salts: application of desalination by its mixed

Zhigang LIU, Shaomin ZHU, Yansheng LI

《环境科学与工程前沿（英文）》 2012年第6卷第1期页码 45-50 doi: 10.1007/s11783-010-0262-6

摘要： A novel method for the regeneration of cation exchange resins by aluminum (Al) salts was investigated in order to improve the regeneration efficiency of resins and reduce the dosage of regenerant. The influences of Al concentration and the pH of regeneration solution on resin transformation had been studied. The desalination experiments were carried out to evaluate the characteristics of the Al form resins. Experimental results showed that the regeneration rate of resins was strictly dependent on Al concentration and the pH of the solution. Compared to the conventional regeneration method, the Al form mixed bed exhibited the same desalination capability as the H form mixed bed (MB), and the total organic carbon (TOC) removal was up to 90%, clearly higher than that of the H form. Al salt solution could be utilized repeatedly to regenerate Al form resins.

关键词： aluminum (Al) form resins desalination mixed bed (MB) regeneration