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Topic Review
Preparation of Gaseous Biofuels from Kitchen Waste
Kitchen waste is an important component of domestic waste, and it is both harmful and rich in resources. Biofuels generally refer to solid, liquid or gaseous fuels made from biological organisms and their metabolic excretions. Biofuels are pollution-free, locally available, sustainable and reliable. Biodiesel, bioalcohols (ethanol and butanol), biomethane, and biohydrogen are the typical representatives of gaseous and liquid biofuels.
  • 380
  • 17 Mar 2023
Topic Review
Preparation of Cyrene
The bio-based solvent dihydrolevoglucosenone (Cyrene) is a green and sustainable alternative to petroleum-based dipolar aprotic solvents. Cyrene can be prepared from cellulose in a simple two-step process and can be produced in a variety of yields. Cyrene is compatible with a large number of reactions in the chemical industry and can be applied in organic chemistry, biocatalysis, materials chemistry, graphene and lignin processing, etc. 
  • 406
  • 25 Oct 2023
Topic Review
Predicted Changing Danube Delta Ecosystems for Fish Species
The Danube Delta is one of Earth’s biodiversity hotspots and includes many endemic, rare, and important species of both major conservation and economic value. This unique complex of ecosystems also plays a key role for Danube River and Black Sea fish fauna through its role as a natural safe buffer, shelter, feeding, reproduction, and smooth transitional area for a large number of fish species. Climate change is inducing a progressive sea level rise in the Black Sea, a fact that is expected to impact the delta’s key complex and dynamic habitats, biocoenoses, and associated biota, and last but not least the key taxonomic group, namely, fish. Around one-third of the fish species of this delta will be greatly affected, sometimes negatively, by this climate change scenario, another one-third to a lesser extent, and the final one-third not at all.
  • 524
  • 20 Jul 2023
Topic Review
Precision Spraying
Precision spraying, defined as the targeted spraying, obtains the target information (e.g., size, shape, structure, and canopy density, etc.) of the tree and then apply pesticides as needed. It addresses overdosing or underdosing problem by efficiently applying pesticides to the target area and substantially reducing pesticide usage while maintaining efficacy at preventing crop losses.
  • 2.1K
  • 24 May 2021
Topic Review
Precision Oliviculture
Precision oliviculture (PO) is having an increasing scientific interest and impact on the sector. Its implementation depends on various technological developments: sensors for local and remote crop monitoring, global navigation satellite system (GNSS), equipment and machinery to perform site-specific management through variable rate application (VRA), implementation of geographic information systems (GIS), and systems for analysis, interpretation, and decision support (DSS). 
  • 449
  • 26 May 2022
Topic Review
Precision Agroecology
Precision agroecology provides a unique opportunity to synthesize traditional knowledge and novel technology to transform food systems. Merging precision agriculture technology and agroecological principles offers a unique array of agricultural solutions driven by data collection, experimentation, and decision support tools. Precision agroecology can offer solutions to agriculture’s biggest challenges in achieving sustainability such as pollution, biodiversity loss, and climate change, as well as broader societal issues of rural depopulation and corporate consolidation of the agricultural sector.
  • 613
  • 14 Jan 2022
Topic Review
Precipitation Monitoring Using Commercial Microwave Links
As rainfall exhibits high spatiotemporal variability, accurate and real-time rainfall monitoring is vitally important in fields such as hydrometeorological research, agriculture and disaster prevention and control. The utilization of commercial microwave links (CMLs) for rainfall estimation, as an opportunistic sensing method, has generated considerable attention. Relying on CML networks deployed and maintained by mobile network operators can provide near-surface precipitation information over large areas at a low cost. 
  • 254
  • 20 Oct 2023
Topic Review
Precambrian Supereon
The Precambrian (or Pre-Cambrian, sometimes abbreviated pЄ, or Cryptozoic) is the earliest part of Earth's history, set before the current Phanerozoic Eon. The Precambrian is so named because it preceded the Cambrian, the first period of the Phanerozoic eon, which is named after Cambria, the Latinised name for Wales, where rocks from this age were first studied. The Precambrian accounts for 88% of the Earth's geologic time. The Precambrian (colored green in the timeline figure) is an informal unit of geologic time, subdivided into three eons (Hadean, Archean, Proterozoic) of the geologic time scale. It spans from the formation of Earth about 4.6 billion years ago (Ga) to the beginning of the Cambrian Period, about 541 million years ago (Ma), when hard-shelled creatures first appeared in abundance.
  • 3.1K
  • 18 Oct 2022
Topic Review
Precambrian
The Precambrian (or Pre-Cambrian, sometimes abbreviated pЄ, or Cryptozoic) is the earliest part of Earth's history, set before the current Phanerozoic Eon. The Precambrian is so named because it preceded the Cambrian, the first period of the Phanerozoic eon, which is named after Cambria, the Latinised name for Wales, where rocks from this age were first studied. The Precambrian accounts for 88% of the Earth's geologic time. The Precambrian (colored green in the timeline figure) is an informal unit of geologic time, subdivided into three eons (Hadean, Archean, Proterozoic) of the geologic time scale. It spans from the formation of Earth about 4.6 billion years ago (Ga) to the beginning of the Cambrian Period, about 541 million years ago (Ma), when hard-shelled creatures first appeared in abundance.
  • 1.8K
  • 15 Nov 2022
Topic Review
Pre-Emptively Managing Overtourism
Overtourism is the congestion or overcrowding from an excess of tourists, resulting in conflicts with locals. The World Tourism Organization defines overtourism as "the impact of tourism on a destination, or parts thereof, that excessively influences perceived quality of life of citizens and/or quality of visitor experiences in a negative way". 
  • 534
  • 09 Feb 2022
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