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Topic Review
3D Printed Electromagnetic Vibration Harvesters
Energy harvesting is the utilisation of ambient energy in order to power electronics such as wireless sensor nodes (WSN) or wearables without the need of batteries. This allows to operate the node over a much longer time period compared to battery-powered devices along with lower maintenance efforts. Furthermore, the low-maintenance requirements allow to operate these WSNs in environments with limited or no accessibility.
  • 931
  • 05 Nov 2021
Topic Review
A city Multi-Floor Manufacturing Cluster
Multi-floor manufacturing cluster (MFMC) comprise production and service enterprises of various types of ownership, mainly SMEs, with different production orientations, with the presence of small-scale in-house equipment. This feature of MFMC promotes business competition, allowing for creating collaborative and networked organizations that can happen at some stages of development and can reach a level of a virtual manufacturing network based on Digital Twins models to fulfil customer orders.
  • 732
  • 28 Mar 2022
Topic Review
Above-and-Belowground Carbon Stocks
Peatlands areas are where partially decayed organic materials accumulate over time and where litter deposition exceeds anaerobic decomposition. These sites are important reservoirs of biodiversity, carbon, and water.
  • 506
  • 28 Feb 2022
Topic Review
Acoustic Emission Spectroscopy
Acoustic emission (AE) spectroscopy has become the method of choice in many fieldsbecause it is highly sensitive. For example, the AE system constructed by the Vallen company, Germany, has a sampling rate that can reach up to 10 MHz, an arrival time resolution of 100 ns, and an energy resolution of 1.8 × 10−18V2s (i.e., in the attojoule regime, aJ) referred to sensor signal at 34 dB preamplifier gain.
  • 978
  • 28 Oct 2021
Topic Review
Agricultural Eco-Efficiency：Challenges and Progress
The research on agricultural eco-efficiency has become an important point to deeply understand the interaction between ecological and environmental conditions and socio-economic factors as well as realize the coordinated development of agricultural economic development and environmental protection. (1) Background: This paper attempts to provide scientific support for the healthy and stable development of the agricultural economy and the sustainable development of ecological agriculture. (2) Methods: From a comprehensive perspective, this paper systematically analyze the overall situation, development trend, key fields, and hot fields of agricultural eco-efficiency in the past two decades. It consists of two complementary parts, including systematic quantitative literature review (based on CiteSpace) and traditional literature review. (3) Results: Agricultural eco-efficiency has evolved significantly with the popularization of agricultural machinery and the wide application of science and technology in the field of agricultural ecology. Its future development relies on the advances in our knowledge on theories and hypothesis, evaluation methods, impact on “socio-economic ecological” system, and drivers and regulation of agricultural eco-efficiency. For each of these fields, we find that challenges still exist. At present, the quantitative methods and index selection are not unified. We should deeply analyze the internal and external driving force of the development and change of ecological efficiency by constructing a complete theoretical framework for the research of agricultural ecological efficiency. At the same time, new technologies and methods are needed to evaluate agricultural eco-efficiency, and a balanced consensus between the improvement of agricultural eco-efficiency and the improvement of the ecological environment should be formed through empirical research.
  • 331
  • 27 Jan 2022
Topic Review
Agriculture in Ancient Mesopotamia
Agriculture was the main economic activity in ancient Mesopotamia. Operating under harsh constraints, notably the arid climate, the Mesopotamian farmers developed effective strategies that enabled them to support the development of the first states, the first cities, and then the first known empires, under the supervision of the institutions which dominated the economy: the royal and provincial palaces, the temples, and the domains of the elites. They focused above all on the cultivation of cereals (particularly barley) and sheep farming, but also farmed legumes, as well as date palms in the south and grapes in the north. In reality, there were two types of Mesopotamian agriculture, corresponding to the two main ecological domains, which largely overlapped with cultural distinctions. The agriculture of southern or Lower Mesopotamia, the land of Sumer and Akkad, which later became Babylonia received almost no rain and required large scale irrigation works which were supervised by temple estates, but could produce high returns. The agriculture of Northern or Upper Mesopotamia, the land that would eventually become Assyria, had enough rainfall to allow dry agriculture most of the time so that irrigation and large institutional estates were less important, but the returns were also usually lower.
  • 1.5K
  • 02 Dec 2022
Topic Review
Agroforestry: Opportunities and Challenges in Timor-Leste
Agro forestry is a land management system that integrates trees, agriculture crops, and animal farming in order to provide a diverse range of ecosystem services. Timor-Leste, the newest country and one of the least developed countries, has faced multidimensional challenges on land use management, including deforestation, land degradation, and poverty. The agroforestry system is recognized as one of the viable options for balancing the socio-economic needs and ecological functions of the lands in Timor-Leste.
  • 462
  • 23 May 2023
Topic Review
Air Pollutants on Airway Diseases
Air pollutants include toxic particles and gases emitted in large quantities from many different combustible materials. They also include particulate matter (PM) and ozone, and biological contaminants, such as viruses and bacteria, which can penetrate the human airway and reach the bloodstream, triggering airway inflammation, dysfunction, and fibrosis. 
  • 545
  • 26 Oct 2021
Topic Review
Air Pollution Interconnections with Climate and Environmental Health
Air pollution is a major environmental problem. It is a problem that is interconnected with climate change and ecosystem health. The dynamics within the Niger Delta region of Nigeria are discovered. The high reliance of the people of the Niger Delta on their environment increases their vulnerability to environmental changes. This makes the problem an issue of environmental Justice when the drivers of air pollution in the region are factored in. Urgent and concerted action is required at the individual, local and national levels. The directions in this regard are highlighted. The emission and transmission of air pollutants cause air pollution. Nigeria, Africa’s most populous nation of over 200 million, is plagued with numerous environmental problems one of which is air pollution. The air quality in its major cities ranks among the worst in the world. 
  • 470
  • 02 Dec 2022
Topic Review
Ākitio
Ākitio is a coastal community in the Tararua District of the lower east coast of the North Island of New Zealand. The Ākitio River runs for approximately 35 kilometres in a southeast by northwest direction, leading to the town of Weber, on Route 52, formerly State Highway 52. Ākitio is in meshblocks 2224200 (NW), 2224300 (N) and 2225100 (SW), which had a combined population of 111 people in 48 households in the 2013 New Zealand census.
  • 293
  • 04 Nov 2022
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