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Topic Review
Education for Environmental Citizenship
Environmental citizenship and environmental education are a particularly special field for the symbolic and practical clashes of competing ideas, interests, and organizations. Smederevac-Lalic et al. explain that formal, informal, and non-formal education are mediators of other types of knowledge and that the perceptions and interests of participants in the three organizational forms also express different intentions and aspirations.
  • 982
  • 14 Dec 2021
Topic Review
Monitoring of Ecological Response to River Restoration
Nature-based solutions are widely advocated for freshwater ecosystem conservation and restoration. As increasing amounts of river restoration are undertaken, the need to understand the ecological response to different measures and where measures are best applied becomes more pressing. 
  • 488
  • 14 Dec 2021
Topic Review
Lie Groups, Locally Compact Groups, and Pro-Lie groups
The principal concepts discussed here are various types of topological groups, Lie groups, and Pro-Lie Groups.
  • 1.0K
  • 14 Dec 2021
Topic Review
Coal Fly Ash Use in Cement and Concrete
Nowadays, coal is increasingly being used as an energy source in some countries. This coal-fired generation process, however, has the disadvantage that produces large quantities of coal fly ash. Its characteristics differ depending on the combustion conditions and the coal source. Fineness will influence early compressive strength in cement-based materials. The finer the binding material, the higher the early compressive strength. They can be used to produce high-volume fly ash (HVFA) concrete, self-compacting concrete (SCC), concrete for marine infrastructures, pervious concrete, roller compacted concrete (RCC) and so on.
  • 2.2K
  • 14 Dec 2021
Topic Review
Twin Transition through Implementation of Industry 4.0 Technologies
Key Enabling Technologies (KET) support the adoption of Industry 4.0 (I4.0) and are also considered the main drivers of the Circular Economy (CE) transition. In this respect, the guidelines and real use cases to inspire enterprises and industry to lead the twin digital and green transition are still poor.
  • 689
  • 14 Dec 2021
Topic Review
Remote Sensing Technique in Rice Weed Detection
Remote sensing technology aims to monitor and capture the earth’s information without making direct contact and destroying it. The utilization of the electromagnetic spectrum, ranging from visible to microwave for measuring the earth’s properties, is the main idea behind remote sensing technology. Machine learning (ML) and deep learning (DL) remote sensing techniques have successfully produced a high accuracy map for detecting weeds in crops using RS platforms. Therefore, this technology positively impacts weed management in many aspects, especially in terms of the economic perspective. The implementation of this technology into agricultural development could be extended further. 
  • 1.1K
  • 13 Dec 2021
Topic Review
Sustainable Construction Projects
There are several definitions of "sustainable construction", but it is positioned as a relevant contemporary issue aligned with the efforts needed to achieve sustainability and development. Sometimes its focus is limited to the environmental dimension, but it must encompass all three pillars: environmental, social, and economic aspects in its scope to be considered sustainable:  Environment: Focusing on the protection of the environment through the reduction of ecological impacts, resource utilization, and waste production. Social: Integrating health and safety aspects in construction and the area of influence, as well as conflict resolution for all stakeholders.  Economic: Integrating efficiency and savings, quality assurance, and profitability. Complemented by the result of the application of biomimetic methodology: the biocircular model.  In this model, it is established that construction processes must be efficient and dynamic, considering the human dimension, management, and technical knowledge to achieve objectives.  In addition, the circular economy approach focused on reuse, recycling, durability, and optimization. 
  • 543
  • 13 Dec 2021
Topic Review
Mexican Propolis
Propolis is a resinous substance collected by bees from plants and its natural product is available as a safe therapeutic option easily administered orally and readily available as a natural supplement and functional food.
  • 616
  • 13 Dec 2021
Topic Review
Energy Consumption of Vacuum Freeze Dryer
The vacuum freeze-drying process is characterized by sublimating the frozen object into a solid state in a vacuum environment, sublimating the water from the object, and finally drying it. At the same time, sublimating the water into the cold trap coil to re form ice. This characteristic determines that the freeze-drying machine needs to use the heat medium circulation system to heat the material to sublimate the water of the object, The ice condensed on the cold trap coil also needs a lot of heat to melt and discharge. During the freeze-drying process of the freeze dryer, the cold trap needs to continuously capture the water vapor generated by sublimation to freeze the cold trap coil. The ice captured by the cold trap coil needs to be melted after each batch of freeze-drying, which in turn requires a large amount of high-temperature defrosting water or thawing steam. For the freeze dryer with heat medium circulation system, sublimation drying also needs to continuously absorb heat, The heat required for the whole process is provided by the electric heater of the heat medium circulation system. The preparation of defrosting water or defrosting steam and the electric heater that provides necessary heat for sublimation require a lot of energy consumption. The freeze dryer consumes too much energy, the freeze-drying cost is high and the energy waste is serious.
  • 736
  • 13 Dec 2021
Topic Review
HCH Removal in a Biochar-Amended Biofilter
The biochar biofilter proved to be 96% efficient at cleaning HCH and its transformation products from drainage water, a significant improvement over classic biofilter that remove, on average, 68% of HCH. Although iron- and sulfur-oxidizing bacteria, such as Gallionella and Sulfuricurvum, were dominant in the biochar bed outflows, they were absent in sediments, which were rich in Simplicispira, Rhodoluna, Rhodoferax, and Flavobacterium. The presence of functional genes involved in the biodegradation of HCH isomers and their byproducts was confirmed in both systems. The high effectiveness of the biochar biofilter displayed in this study should further encourage the use of biochar in water treatment solutions, e.g., for temporary water purification installations during the construction of other long-term wastewater treatment technologies, or even as final solutions at contaminated sites.
  • 543
  • 10 Dec 2021
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