Symbiosis Analysis on Industrial Ecological System

Industrial ecological system is a sustainable mode of modern industry development. Industrial symbio-sis, a sub-field of industrial ecology, engages traditionally separate industries in a collective approach, involving exchange of materials, energy, water, and/or by-products, to enhance competitive ability and environmental per-formance. To construct a symbiosis analysis method, this article employs a number of parameters embodying in-formation about materials, energy and economics as the main essential parameters in system analysis and introduces symbiosis profit and symbiotic consumption elements as the economic indicators. A modeling and simulation pro-gram is designed using the agent-based modeling approach to simulate the evolvement of a hypothetical coal-based industrial system and the change of symbiosis conditions in the process of construction is examined. The simulation program built using the Swarm library, which is a freely available multi-agent simulation package, provides a useful demonstration for the symbiosis analysis method.     

基于生态学的大型公共工程可持续发展研究综述及总体构架

工程可持续发展是可持续战略的一部分.生态学的引入是对建设工程问题研究理论与方法的全新架构,具有开创性的理论与实践意义.其研究目的在于更好地落实可持续发展战略,并为工程实践服务.本文综述了国内外研究现状,并提出了具体的研究思路和框架.     

谈交通建筑改扩建设计

简述了铁路客站站区的发展经历了膨胀、衰落、复兴几个阶段，剖析历史、面向未来，对铁路客站改扩建进行了深层的分析，提出了新的设计思路及新的美学思想，通过对三个特大型客站分析，提出了城市设计、整体环境、历史对话、节奏对比及强调生态环境、采用高新技术等设计思路。     

华沙大学新图书馆——树林中的城市

华沙大学新图书馆根据两位波兰建筑师Marek Budzyski和Zbigniew Badowski在竞赛中获一等奖的方案实施,建筑师的设计主题是“树林中的城市”。整体建筑素雅,环境优美,其屋顶花园为欧洲最大和最漂亮的屋顶花园之一。本文简要介绍和分析了了华沙大学新图书馆及其花园的概况与设计理念。     

建筑与城市共生:城市复调音乐

阐释建筑与城市的关系犹如根茎,是一种生命结构;建筑与城市共生,建筑构成城市的物质环境和文化环境,城市也为建筑提供物质环境和文化环境。指出在历史环境中插入新建筑是一项挑战,同时也构成了建筑与城市多声部、多调性的复调音乐。     

某地浸铀矿山铀煤共采开发研究

内蒙古地区赋存大量的铀煤共生矿床,以某煤矿和铀矿床为典型,煤矿开采地下水位要求低于1060m,而铀矿开采需要地下水位在1340m以上。为解决这一矛盾,运用三维数值模拟技术,对矿区地下水进行了模拟,并首次运用水力帷幕,确定了水力帷幕的主要参数。运用数值模型对该方案进行了验证,证明运用水力帷幕可以保证水位维持在1340m。解决铀煤共采的难题,为内蒙古地区以及其他地区的铀煤共生矿床开发提供了解决方案。     

Nature inspired supply chain solutions: definitions,analogies, and future research directions

ABSTRACT

Supply chains are becoming increasingly complex, and many companies and researchers are looking to nature for finding solutions. In this paper, we provide a narrative synthesis and systematic review to explore state-of-the-art, and identify key areas for exploration of nature inspired solutions in the supply chain area. We consider strategic, tactical, and operational decisions within supply chains and identify analogies between biological systems and supply chains to create a new research agenda. Our findings show that the majority of the research in nature inspired supply chains from the systemic perspective focuses on closed loop supply chains. In contrast, similar systemic solutions such as industrial symbiosis, circular economy, and industrial ecology have not been explored as frequently. Reducing production waste (industrial symbiosis) in addition to end-of-life product waste (closed loop supply chains), optimising raw material use and extending the life of used resources (circular economy), investigating the interactions between biosphere and technosphere (industrial ecology), and seeking solutions to industrial problems from nature (biomimicry) are all possible paths for reaching a zero-waste economy. These systemic solutions have a considerable impact on the supply chains at the strategic, tactical, and operational levels, which need to be explored to identify efficient and effective solutions.     

Bridging the Gap: Plant-Endophyte Interactions as a Roadmap to Understanding Small-Molecule Communication in Marine Microbiomes

Probing the composition of the microbiome and its association with health and disease states is more accessible than ever due to the rise of affordable sequencing technology. Despite advances in our ability to identify members of symbiont communities, untangling the chemical signaling that they use to communicate with host organisms remains challenging. In order to gain a greater mechanistic understanding of how the microbiome impacts health, and how chemical ecology can be leveraged to advance small-molecule drug discovery from microorganisms, the principals governing communication between host and symbiont must be elucidated. Herein, we review common modes of interkingdom small-molecule communication in terrestrial and marine environments, describe the differences between these environments, and detail the advantages and disadvantages for studies focused on the marine environment. Finally, we propose the use of plant-endophyte interactions as a stepping stone to a greater understanding of similar interactions in marine invertebrates, and ultimately in humans.     

可溶性盐复分解法碳酸钙制备影响因素研究

采用可溶性盐复分解法进行碳酸钙合成影响因素及其机理的研究。以正交试验法对合成温度、pH值、反应物浓度在碳酸钙合成中的影响进行探索,验证了温度以及pH值在合成反应中对产物晶型、形貌以及尺度有显著影响;使用周期键链理论(PBC)讨论了碳酸钙晶体方解石/文石共生现象;研究观察Mg2+对碳酸钙合成的影响,Mg2+作为能够稳定无定形碳酸钙前驱体(ACC)的金属离子,大量存在时碳酸钙形貌随nMg/nCa增大而变化,同时颗粒尺度变小。     

Treatment of oilfield wastewater using algal–bacterial fluidized bed reactor

This study was carried out to investigate the ability of an artificial microalgal–bacterial consortium to remediate an oilfield wastewater using laboratory-scale fluidized bed reactors (FBRs) under lighting. The consortium consists of an oil-degrading bacterial community and a microalgae, Scenedesmus obliquus GH2. The microbes were immobilized onto Ca-alginate beads and filled to the FBRs. The influence of hydraulic retention time (HRT) on the removal of chemical oxygen demand (COD), total nitrogen, NH₃-N and oil concentration was investigated over 40 operational days. The synergistic relationship in the algal–bacterial microcosm was clearly demonstrated, since for the four parameters tested, the highest removal was recorded in the system inoculated with both algae and bacteria. In the algal–bacterial FBR, at 16 h HRT, the average effluent concentrations of COD, NH₃-N and oil were 92, 24 and 4.8 mg/L, respectively, corresponding to removal efficiencies of 70.8%, 61.2% and 84.2%, respectively. The effluent could meet the grade 2 as required by the national discharge standard of China. However, the effluent quality of the bacterial- or algal-only case could not satisfy the grade 3 discharge standard at 16 h HRT. The algal–bacterial biomass exhibits lowest effluent microtoxicity and highest dehydrogenase activity in comparison with bacterial-only and algal-only cases. This study reveals that the consortium containing dual microbial species has potential for microbial remediation of oilfield wastewater.