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Topic Review
Physical Algae Removal Technology
The most commonly used techniques for algae removal by physical methods include mechanical methods, shading technology methods, air flotation, clay flocculation, ultrasonic methods, filtration, ultraviolet irradiation, and adsorption.
  • 733
  • 21 Mar 2023
Topic Review
Merchants of Doubt
Merchants of Doubt: How a Handful of Scientists Obscured the Truth on Issues from Tobacco Smoke to Global Warming is a 2010 non-fiction book by American historians of science Naomi Oreskes and Erik M. Conway. It identifies parallels between the global warming controversy and earlier controversies over tobacco smoking, acid rain, DDT, and the hole in the ozone layer. Oreskes and Conway write that in each case "keeping the controversy alive" by spreading doubt and confusion after a scientific consensus had been reached was the basic strategy of those opposing action. In particular, they show that Fred Seitz, Fred Singer, and a few other contrarian scientists joined forces with conservative think tanks and private corporations to challenge the scientific consensus on many contemporary issues. Some of the book's subjects have been critical of the book, but most reviewers received it favorably. One reviewer said that Merchants of Doubt is exhaustively researched and documented, and may be one of the most important books of 2010. Another reviewer saw the book as his choice for best science book of the year. It was made into a film, Merchants of Doubt, directed by Robert Kenner, released in 2014.
  • 732
  • 19 Oct 2022
Topic Review
Metallic Iron for Environmental Remediation
Metallic iron (Fe0) used as a reactive material in subsurface permeable reactive barriers is comparable to iron pipes with three major differences: (i) corrosion is welcome because it is a rather useful process [7][8][9], (ii) a reactive wall is ideally permanently water saturated, and (iii) the length of used particles (< 5 cm) is tiny compared to pipes which are up to 12 m in length. On the one hand, Fe0 specimens used in water treatment comprise steel wool with thickness varying between 25 and 90 μm [10][11]. On the other hand, the length of these particles is comparable to the wall thickness of iron pipes (2–4 mm). There has been no real system analysis for remediation Fe0 materials with the aim to outline the differences making their peculiar characteristics. In addition, traceably deriving the longevity of remediation Fe0 specimens from Fe0 pipes is impossible because of the differences highlighted.
  • 731
  • 27 Oct 2020
Topic Review
Bioburden in Indoor Environments
The exposure to particles and bioaerosols has been associated with the increase in health e ects in children. The objective of this study was to assess the indoor exposure to bioburden in the indoor microenvironments more frequented by children. Air particulate matter (PM) and settled dust were sampled in 33 dwellings and four schools with a medium volume sampler and with a passive method using electrostatic dust collectors (EDC), respectively. Settled dust collected by EDC was analyzed by culture-based methods (including azole resistance profile) and using qPCR.Results showed that the PM2.5 and PM10 concentrations in classrooms were higher than in homes and highly exceeded the limit values established by the Portuguese legislation for indoor air quality. The fungal species most commonly found in bedrooms was Penicillium sp. (91.79%), whereas, in living rooms, it was Rhizopus sp. (37.95%). Aspergillus sections with toxigenic potential were found in bedrooms and living rooms and were able to grow on VOR. 
  • 730
  • 24 Sep 2020
Topic Review
Distribution of Coastal Cigarette Butts
Litter on beaches is one of the most difficult problems in coastal management and every year, much efforts and public money are invested to try to alleviate and solve the problem. Cigarette butts (CB) are among the most widespread abandoned personal items in the world. In Spain, they are found on all types of beaches, where they are discarded by beach users; however, rivers and streams can also deposit CB on shores.
  • 730
  • 03 Feb 2021
Topic Review
Synthetic Progestins in Waste and Surface Waters
Synthetic progestins (PGs) are a large family of hormones used in continuously growing amounts in human and animal contraception and medicinal therapies. Because wastewater treatment plants (WWTPs) are unable to eradicate PGs after excretion, they are discharged into aquatic systems, where they can also be regenerated from conjugated PG metabolites. The PGs were considered of particular interest due to their wide use, activity, and hormonal derivation (from testosterone, progesterone, and spirolactone). It is concluded that PGs had been analysed in WWTPs influents and effluents and, to a lesser extent, in other matrices, including surface waters, where their concentrations range from ng/L to a few µg/L. Because of their high affinity for cell hormone receptors, PGs are endocrine disruptor compounds that may alter the reproductive fitness and development of biota.
  • 730
  • 21 Apr 2022
Topic Review
Climate Change in Vietnam
Vietnam is considered, in coming decades, to be among the most affected countries by global climate change. A large number of studies that Vietnam is experiencing climate change and will be severely negatively affected in coming decades. These negative effects include sea level rise, salinity intrusion and other hydrological problems like flood, river mouth evolution, sedimentation as well as the increasing frequency of natural hazards such as cold waves, storm surges will all exert negative effects on the country's development and economy including agriculture, aquaculture, road infrastructure, etc. Some issues, such as land subsidence (caused by excessive groundwater extraction) further worsen some of the effects climate change will bring (sea level rise) especially in areas such as the Mekong Delta. The government, NGOs, and citizens have taken various measures to mitigate and adapt to the impact.
  • 730
  • 14 Nov 2022
Topic Review
Aromatic Nitroderivatives
Aromatic nitroderivatives are compounds of considerable environmental concern, because some of them are phytotoxic (especially the nitrophenols, and particularly 2,4-dinitrophenol), others are mutagenic and potentially carcinogenic (e.g., the nitroderivatives of polycyclic aromatic hydrocarbons, such as 1-nitropyrene), and all of them absorb sunlight as components of the brown carbon. The latter has the potential to affect the climatic feedback of atmospheric aerosols. Most nitroderivatives are secondarily formed in the environment and, among their possible formation processes, photonitration upon irradiation of nitrate or nitrite is an important pathway that has periodically gained considerable attention. 
  • 727
  • 28 May 2021
Topic Review
ZnO Nanoparticles and Wheat and Maize
The zinc oxide nanoparticle (ZnO NP) is a commonly used metal oxide ENPs finding application as sunscreens and cosmetics, biosensors, and in solar cells, etc. Presently, many kinds of metal oxide NPs have been applied in agriculture, specifically in fertilization and plant protection in abiotic and biotic stress conditions.
  • 725
  • 22 Dec 2021
Topic Review
Genetic Analysis and Breeding of Cassava
Cassava (Manihot esculenta Crantz) is the sixth most important food crop and consumed by 800 million people worldwide. In Africa, cassava is the second most important food crop after maize and Africa is the worlds’ largest producer. Though cassava is not one of the main commodity crops in South Africa, it is becoming a popular crop among farming communities in frost-free areas, due to its climate-resilient nature. The potential of the available genetic and genomic resources for breeding and genetic improvement of cassava for enhanced resistance to biotic stresses are discussed.
  • 723
  • 29 Jun 2022
Topic Review
Properties of Moringa Oleifera Seeds
Because the seeds of Moringa Oleifera contain a water-soluble cationic coagulant protein, they are used as a primary coagulant in drinking water clarification and wastewater treatment through their ability to reduce the turbidity of treated water. These proteins are considered the most widely investigated plant-based coagulant, having been researched by several scholars.The seeds of Moringa Oleifera possess good coagulating properties comparable to commercial alum used in turbidity removal.
  • 723
  • 08 Mar 2023
Topic Review
Cleaning Technologies for Indoor Air Quality Improvement
If outdoor air is more polluted, or in certain situations where ventilation is not possible, other strategies need to be applied, such as source control and pollutants extraction. The latter incorporates air cleaning technologies, one of the emergent areas of indoor air quality. Various air treatment technologies can be used to control contaminants, including physicochemical technologies and biological technologies.
  • 722
  • 28 Sep 2022
Topic Review
Climate Change and Gender
The effects of climate change and gender do not impact equally on men and women. This results not from biological differences due to one's sex, but from the social construction of gender roles and relations, which affect the accepted behaviors of men and women. Climate change increases gender inequality, reduces women's ability to be financially independent, and has an overall negative impact on the social and political rights of women, especially in economies that are heavily based on agriculture. In many cases, gender inequality means that women are more vulnerable to the negative effects of climate change. This is due to gender roles, particularly in the developing world, which means that women are often dependent on the natural environment for subsistence and income. By further limiting women's already constrained access to physical, social, political, and fiscal resources, climate change often burdens women more than men and can magnify existing gender inequality. Gender-based differences have also been identified in relation to awareness, causation and response to climate change, and many countries have developed and implemented gender-based climate change strategies and action plans. For example, the government of Mozambique adopted a Gender, Environment and Climate Change Strategy and Action Plan in early 2010, being the first government in the world to do so. Analysis of gender in climate change, however, is not limited to women. It also means not only applying a binary male/female system of analysis on sets of quantitative data, but also scrutinizing discursive constructions that shapes power relations connected to climate change.
  • 722
  • 10 Oct 2022
Topic Review
Nutriepigenomics in Environmental-Associated Oxidative Stress
Complex molecular mechanisms define our responses to environmental stimuli. Beyond the DNA sequence itself, epigenetic machinery orchestrates changes in gene expression induced by diet, physical activity, stress and pollution, among others. Importantly, nutrition has a strong impact on epigenetic players and, consequently, sustains a promising role in the regulation of cellular responses such as oxidative stress. As oxidative stress is a natural physiological process where the presence of reactive oxygen-derived species and nitrogen-derived species overcomes the uptake strategy of antioxidant defenses, it plays an essential role in epigenetic changes induced by environmental pollutants and culminates in signaling the disruption of redox control. 
  • 722
  • 18 Apr 2023
Topic Review
Phytotoxic Ozone Concentration
Tropospheric concentrations of phytotoxic ozone (O3) have undergone a great increase from preindustrial 10–15 ppbv to a present-day concentration of 35–40 ppbv in large parts of the industrialised world due to increased emissions of O3 precursors including NOx, CO, CH4 and volatile organic compounds.
  • 720
  • 18 Mar 2021
Topic Review
Black Coral Distribution in Italian
The aim of this entry is to present a review of the knowledge on the occurrence of black corals in the Italian seas, providing the first comprehensive distribution map of these species. The distribution of black corals may be considered the first step towards defining a more complete overview regarding the present knowledge on these vulnerable species. This study also highlights the need for the conservation programs protecting black corals in the Italian seas.
  • 719
  • 28 Jul 2021
Topic Review
Climate-friendly Gardening
Climate-friendly gardening is gardening in ways which reduce emissions of greenhouse gases from gardens and encourage the absorption of carbon dioxide by soils and plants in order to aid the reduction of global warming. To be a climate-friendly gardener means considering both what happens in a garden and the materials brought into it and the impact they have on land use and climate. It can also include garden features or activities in the garden that help to reduce greenhouse gas emissions elsewhere.
  • 719
  • 11 Oct 2022
Topic Review
Wild Rocket (Diplotaxis tenuifolia) Baby-Leaf
Wild rocket (Diplotaxis tenuifolia (L.) DC) is a cruciferous perennial herb, spontaneous in the Mediterranean Basin. Here, a study on evaluating the hyperspectral response of plants to bio-based disease resistance inducers is presented.
  • 718
  • 30 Dec 2021
Topic Review
Mitigation of Global Warming in Australia
Mitigation of global warming involves taking actions to reduce greenhouse gas emissions and to enhance sinks aimed at reducing the extent of global warming. This is in distinction to adaptation to global warming, which involves taking action to minimize the effects of global warming. Scientific consensus on global warming, together with the precautionary principle and the fear of non-linear climate transitions, is leading to increased effort to develop new technologies and sciences and carefully manage others in an attempt to mitigate global warming. In order to make a significant change, coal from Australia needs to be replaced with alternatives. Carbon capture and storage in Australia has been put forward as a solution for production of clean hydrogen from natural gas. Following the introduction of government mandatory renewable energy targets, more opportunities have opened up for renewable energy technologies such as wind power, photovoltaics, and solar thermal technologies. The deployment of these technologies provides opportunities for mitigating greenhouse gases. A carbon price was introduced on 1 July 2012 by the government of Julia Gillard with the purpose of reducing Australia 's carbon emissions. It requires large businesses (defined as those with annual carbon dioxide equivalent emissions over 25,000 tonnes annually) to pay a price for emissions permits. The tax was scrapped by the Abbott government in July 2014 in what was a widely criticized and highly publicized move.
  • 717
  • 12 Oct 2022
Topic Review
Land Use and Global Environmental Change
Global environmental changes are multifactorial and affected by multiple forms of land use. Land use is closely linked to the global dynamics of the urbanization process, especially in recent decades in which the world has gone through intense migratory processes moving from rural to the urban setting. The dynamics that involve the urbanization process have multiple aspects and presuppose multiple ways of using the land and their linking to the economic aspect.
  • 717
  • 05 Jan 2023
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