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Topic Review
Kuroshio Current
The Kuroshio (黒潮), also known as the Black or Japan Current (日本海流, Nihon Kairyū) or the Black Stream, is a north-flowing, warm ocean current on the west side of the North Pacific Ocean. Like the Gulf Stream in the North Atlantic, the Kuroshio is a powerful western boundary current and forms the western limb of the North Pacific Subtropical Gyre.
  • 2.5K
  • 09 Oct 2022
Topic Review
Modified Starch-Based Adhesives
Consumer trends towards environmentally friendly products are driving plastics industries to investigate more benign alternatives to petroleum-based polymers. In the case of adhesives, one possibility to achieve sustainable production is to use non-toxic, low-cost starches as biodegradable raw materials for adhesive production. While native starch contains only hydroxyl groups and has limited scope, chemically modified starch shows superior water resistance properties for adhesive applications. Esterified starches, starches with ester substituents, can be feasibly produced and utilized to prepare bio-based adhesives with improved water resistance. Syntheses of esterified starch materials can involve esterification, transesterification, alkylation, acetylation, succinylation, or enzymatic reactions.
  • 2.5K
  • 31 May 2022
Topic Review
Tropical Monsoon Climate
An area of tropical monsoon climate (occasionally known as a tropical wet climate or a tropical monsoon and trade-wind littoral climate) is a type of climate that corresponds to the Köppen climate classification category "Am". Tropical monsoon climates have monthly mean temperatures above 18 °C (64 °F) in every month of the year and a dry season. :200–1 Tropical monsoon climates is the intermediate climate between the wet Af (or tropical rainforest climate) and the drier Aw (or tropical savanna climate). A tropical monsoon climate, however, has its driest month seeing on average less than 60 mm, but more than [math]\displaystyle{ 100-\left ( \frac{Total\ Annual\ Precipitation\ (mm)}{25} \right ) }[/math]. This latter fact is in direct contrast to a tropical savanna climate, whose driest month sees less than 60 mm of precipitation and also less than [math]\displaystyle{ 100-\left ( \frac{Total\ Annual\ Precipitation\ (mm)}{25} \right ) }[/math] of average monthly precipitation. In essence, a tropical monsoon climate tends to either see more rainfall than a tropical savanna climate or have less pronounced dry seasons. Additionally, a tropical monsoon climate tends to see less variance in temperatures during the course of the year than a tropical savanna climate. This climate has a driest month which nearly always occurs at or soon after the "winter" solstice for that side of the equator.
  • 2.5K
  • 03 Nov 2022
Topic Review
Hydrochar
Recently, due to the escalating usage of non-renewable fossil fuels such as coal, natural gas and petroleum coke in electricity and power generation, and associated issues with pollution and global warming, more attention is being paid to finding alternative renewable fuel sources. Thermochemical and hydrothermal conversion processes have been used to produce biochar and hydrochar, respectively, from waste renewable biomass. Char produced from the thermochemical and hydrothermal decomposition of biomass is considered an environmentally friendly replacement for solid hydrocarbon materials such as coal and petroleum coke. Unlike thermochemically derived biochar, hydrochar has received little attention due to the lack of literature on its production technologies, physicochemical characterization, and applications.
  • 2.5K
  • 23 Aug 2021
Topic Review
Environmental Intelligence, A Holistic Approach
The human beings intrinsically, intensively, and strongly guard their life and soul. This instinctive protection is also supported by the social, cultural, religious, and legal principles and regulations, too. If we consider the means of realizing this phenomenon to be the instinctive intelligence of man in preserving its life and health, we must admit that humans do not have such intelligence about their environment and this is a rare paradox. So, why cannot humans understand that the destruction of the environment will ultimately cause the destruction of the human race, while these same humans are incredibly industrious, active, and confident in guarding their own lives? This apparent and dangerous contradiction can be attributed to the lack of intelligence which historical experiences show it has been clearly prominent among individuals and human groups in the traditional world, and more likely in prehistoric man and has been badly damaged and destroyed in modern times and with the acceptance of the duet between man and nature. This is the intelligence that has to be revitalized again in an acceptable manner for the modern human beings. The mental relationship between people and the environment comes from a chain of experiences and knowledge, and the meaning of the environment derives from its functions. This intelligence, which we call "Environmental Intelligence", is the power of calculation, analysis, and presupposition that can help humans establish an organic and immediate relationship between their own partial actions and the large and subtle environmental effects that would immediately and undoubtedly influence the whole society and the entire environment and eventually every individual members of the society. This is the intelligence that has to have an individual and collective aspect and be learnt and transferred in a holistic connection of the individual and society and it is the intelligence that can establish a systematic and nonlinear relationship between the individual, society, environment and the bioenvironmental data. The acquisition and deepening of such intelligence can bridge the gaps that are existent in the human community and are dangerously growing on a daily basis even with the extensive and unprecedented instructions and notifications.
  • 2.5K
  • 28 Sep 2021
Topic Review
Pyrolysis and Gasification Mechanism of Biomass
Biomass can be converted to energy by using thermochemical and biochemical methodsecology; environmental; biomass; pyrolysis. Biochemical methods, including anaerobic digestion and fermentation, constitute the transformation of cellulose and hemicellulose into biofuel at the stages of hydrolysis and fermentation. At present, biochemical methods are cost-intensive, and involve problems with using lignin-rich biomass.
  • 2.4K
  • 26 Nov 2021
Topic Review
The Heart of Borneo
The HoB is situated in Borneo, the third-largest island in the world next to Greenland and New Guinea. It is shared by Indonesia (Kalimantan) covering an area of 745,567 square kilometers (km2), Borneo Malaysia, comprising the states of Sarawak and Sabah with an area of 124,449 km2 and 73,711 km2, respectively, and a small-nation sate, Brunei Darussalam (5765 km2). The rainforests in Borneo, which evolved between 100 and 150 million years ago, are among the most biologically diverse on Earth. Representing just one percent of the earth’s terrestrial surface, the island of Borneo holds about six percent of the world’s plant and animal species. There are approximately 15,000 flowering plants and 3000 species of trees found in Borneo’s forest, including 6000 endemic species. The biologically diverse island is recognized as a globally significant biodiversity ‘hotspot’. In addition, the uplands of Borneo are a source of at least 14 of the 20 major rivers on the island. Thus, environmentally sustainable resource management is critically important in maintaining the ecological health of riverine systems, which underpin the socio-economic progress of 17 million people in Borneo.
  • 2.4K
  • 23 Sep 2021
Topic Review
Smart Waste Management and Classification Systems
Waste management requires necessary processes and activities to dominate from its inception to demolition. Waste comes in solid, liquid, or gaseous form, and every type of waste demands a different method of classification, disposal, and management. Waste management deals with every waste category, including household, organic, industrial, municipal, biomedical, organic, biological, and radioactive waste. Any unnecessary substance or substance with no use is called “waste”. Waste management involves the collection of the waste and its transport and disposal to appropriate locations. In the European Union (EUROPA), 423 million tons or 56% of domestic waste was recycled in 2016. Reports reflect the need for proper household waste management for the recycling process. Most of the Earth’s population will emigrate from rural to urban areas in the coming years. Therefore, bigger cities will require a highly sustainable infrastructure and smart waste management system to fulfill the fundamental needs of its citizens and provide them with a good service for the future.
  • 2.4K
  • 06 Sep 2022
Topic Review
Water-Saving Agricultural Technologies
Increasing food demand has exerted tremendous stress on agricultural water usages worldwide, often with a threat to sustainability in agricultural production and, hence, food security. Various resource-conservation technologies like conservation agriculture (CA) and water-saving measures are being increasingly adopted to overcome these problems. While these technologies provide some short- and long-term benefits of reduced labor costs, stabilized or increased crop yield, increased water productivity, and improved soil health at farm scale, their overall impacts on hydrology outcomes remain unclear at larger temporal and spatial scales. Although directly linked to the regional hydrological cycle, irrigation remains a less understood component. The ecological conditions arising from the hydrology outcomes of resource-conservation technologies are associated with sustainability in agricultural production.
  • 2.4K
  • 22 Mar 2021
Topic Review
Photocatalytic Reactors Design
The photoreactors design and concepts vary based on the working regime (static or dynamic), photocatalyst morphology (powders or bulk) and volume.
  • 2.4K
  • 10 May 2021
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