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Topic Review
Biosynthesis of Extracellular Polysaccharides in Pseudomonas
Pseudomonas biofilms have been studied intensively for several decades and research outcomes have been successfully implemented in various medical and agricultural applications. Research on biofilm synthesis and composition has also overlapped with the objectives of environmental sciences, since biofilm components show exceptional physicochemical properties applicable to remediation techniques. Especially, exopolysaccharides (ExPs) have been at the center of scientific interest, indicating their potential in solving the environmental issues of heavy metal land and water contamination via sorptive interactions and flocculation.
  • 848
  • 21 Jun 2023
Topic Review
Morphological Effects of Sodium Salinity on Rice
Sodium salinity negatively affects and reduces yields in international agricultural systems. This stress decreases crop growth and development, causing tissue death, flowering abortion, and senescence of the fertilized embryo, and negatively affects enzymatic activity, protein synthesis, among other processes. Rice is a cereal of great international demand for its nutritional properties and its productivity is affected by the presence of salts in agricultural surfaces. The main factors that trigger the decrease in growth under salt stress are adverse changes in morphological structures, which undergo physiological changes due to salinity.
  • 840
  • 13 Feb 2023
Topic Review
Geological Site Effects in Archaeoseismological Point of View
Earthquakes have and continue to, occur worldwide, though some places are affected more than others by earthquake-induced ground shaking and the same earthquake can cause more damage in one area than in nearby locations due to site-specific geological site conditions, also known as local site effects. Depending on the chronology of the earthquakes, various disciplines of seismology include instrumental and historical seismology, archaeoseismology, palaeoseismology and neotectonics, each focusing on using specific sources of information to evaluate recent or ancient earthquakes. Past earthquakes are investigated to expand the pre-instrumental and instrumental earthquake catalog and better evaluate a region’s seismic hazard. Archaeoseismology offers a way to achieve these goals because it links how ancient civilizations and their environment might have interacted and responded to past earthquake-induced ground motion and soil amplification. Hence, archaeoseismology explores pre-instrumental (past) earthquakes that might have affected sites of human occupation and their nearby settings, which have left their co-seismic marks in ancient manufactured constructions exhumed by archaeological excavations. However, archaeoseismological observations are often made on a limited epicentral area, poorly constrained dated earthquakes and occasionally on unclear evidence of earthquake damage. Archaeological excavations or field investigations often underestimate the critical role that an archaeological site’s ancient geological site conditions might have played in causing co-seismic structural damage to ancient anthropogenic structures. Nevertheless, the archaeological community might document and inaccurately diagnose structural damage by ancient earthquake shaking to structures and even estimate the size of past earthquakes giving little or no consideration to the role of geological site effects in addressing the causative earthquake. 
  • 839
  • 22 Mar 2023
Topic Review
Seagrass Bed Pollution
Due to climate change and human activities, seagrass is in crisis as the coverage of seagrass declines at an accelerated rate globally. The eutrophication in coastal waters and discharge of pollutants such as sulfide, heavy metals, organic matter and microplastics caused by human activities are important reasons for seagrass loss. In addition, environmental stressors lead to reduced immunity and decreased resistance of seagrass to various pathogens, leading to seagrass wasting diseases. 
  • 838
  • 19 Jan 2024
Topic Review
Janpan's Air Quality during 30Years
The trends and characteristics of air pollutant concentrations, especially PM2.5, ozone, and related substances, over the past 30 years, are analyzed, and the relationships between concentrations and emissions are discussed quantitatively. We found that PM2.5 mass concentrations have decreased, with the largest reduction in elemental carbon (EC) as the PM2.5 component. The concentrations of organic carbon (OC) have not changed significantly compared to other components, suggesting that especially VOC emissions as precursors need to be reduced. In addition, the analysis of the differences in PM2.5 concentrations between the ambient and the roadside showed that further research on non-exhaust particles is needed. For NOx and SO2, there is a linear relationship between domestic anthropogenic emissions and atmospheric concentrations, indicating that emission control measures are directly effective in the reduction in concentrations. Also, recent air pollution episodes and the effect of reduced economic activity, as a consequence of COVID-19, on air pollution concentrations are summarized
  • 837
  • 07 Sep 2021
Topic Review
R20 Regions of Climate Action
The R20 - Regions of Climate Action is a non-profit environmental organization founded in September 2011, by former Governor of California , Arnold Schwarzenegger, with the support of the United Nations . R20 is a coalition of sub-national governments, private companies, international organizations, NGOs, and academic & financial institutions. Its mission is to accelerate sub-national infrastructure investments in the green economy to meaningfully contribute to the Sustainable Development Goals (SDGs). The NGO operates at the sub-national level as R20 believes sub-national governments constitute a powerful force for change and are best positioned to take action & implement green projects. R20's efforts are designed to support sub-national governments around the world to develop and finance low-carbon and climate resilient infrastructure projects in the field of renewable energy, energy efficient lighting and waste optimisation.
  • 835
  • 24 Nov 2022
Topic Review
Environmental Factors in Water Systems
Microplastics, MPs, in aquatic environments pose serious threats when associated with other pollutants, such as pharmaceuticals, PHs. MPs and PHs are considered emerging and ubiquitous contaminants in water bodies, and their interaction has a complex chain effect.
  • 834
  • 26 Jul 2023
Topic Review
Diesel Engines with Microalgae Oil
Microalgae oil is more or less equally sensitive to key engine parameters, compared with diesel fuel, and can be successfully adopted to the entire families of industrial diesel engines.
  • 832
  • 28 Jun 2021
Topic Review
Thermodynamic Properties of a Gas–Liquid–Solid System
Emission reduction in the main greenhouse gas, CO2, can be achieved efficiently via CO2 geological storage and utilization (CCUS) methods such as the CO2 enhanced oil/water/gas recovery technique, which is considered to be an important strategic technology for the low-carbon development of China’s coal-based energy system. During the CCUS, the thermodynamic properties of the CO2–water–rock system, such as the interfacial tension (IFT) and wettability of the caprock, determine the injectability, sealing capacity, and safety of this scheme. Thus, researchers have been conducting laboratory experiments and modeling work on the interfacial tension between CO2 and the water/brine, wettability of caprocks, the solubility of gas–liquid binary systems, and the pH of CO2-saturated brine under reservoir temperature and pressure conditions.
  • 832
  • 29 Dec 2023
Topic Review
Diazotrophs Makes Corals More Resistant to Heat Stress
During bleaching, corals expel millions of their symbionts, depriving the host from its main food source. One mechanism used by corals to resist bleaching consists in exploiting food sources other than autotrophy. Among the food sources available in the reefs, dinitrogen (N2)-fixing prokaryotes or planktonic diazotrophs (hereafter called ‘PD’) have the particularity to reduce atmospheric dinitrogen (N2) and release part of this nitrogen (diazotroph-derived nitrogen or DDN) in bioavailable form. The supply of PD allowed corals to maintain minimal chlorophyll concentration and symbiont density, sustaining photosynthetic efficiency and stimulating coral growth of up to 48% compared to unfed ones. By providing an alternative source of bioavailable nitrogen and carbon, this specific planktonic diazotroph feeding may have a profound potential for coral bleaching recovery. 
  • 831
  • 21 Apr 2022
Topic Review
Application of Non-Thermal Plasma over Zeolite-Based Materials
 Zeolite based materials are widely used as adsorbents and catalysts for purifying air pollutants (such as NO) and VOCs due to rich pore structure, regular pore distribution and numerous ion exchange sites. Heat treatment is a necessary procedure to remove impurities in pores and promote the uniform dispersion of metal active substances, and then zeolite based adsorbent/catalyst is used to purify nox/volatile organic compounds. However, the traditional thermal field treatment (i.e. high temperature calcination, high temperature purging, etc.) requires a lot of energy consumption. In contrast, non thermal plasma and other unconventional external field treatments show significant advantages of high efficiency, low energy consumption and low pollution, and are used to replace traditional heat treatment in many fields. 
  • 831
  • 01 Dec 2023
Topic Review
Modelling of Nature-Based Solutions on Surface Water Quality
Global climate change and growing urbanization pose a threat to both natural and urban ecosystems. In these, one of the most impacted elements is water, which is responsible for a large variety of ecosystem services and benefits to society. Mathematical models can be used to simulate the implementation of Nature-Based Solutions (NBSs), thus helping to quantify their impacts on these issues in a practical and efficient manner.
  • 828
  • 28 Jun 2022
Topic Review
Symptoms of Heavy Metal Toxicity on Cereal Plants
The contamination of soils by heavy metals poses a substantial environmental quandary with far-reaching repercussions for the growth and development of cereal crops. These crops are indispensable for sustainable food systems as they absorb water and nutrients from the soil, potentially uptaking these toxic metals in the process. This phenomenon, known as bioaccumulation, can lead to elevated levels of heavy metals in edible plant parts, such as grains, thereby endangering consumers when these tainted crops are consumed.
  • 828
  • 24 Oct 2023
Topic Review
Transformation Pathway in a Model Organism
The scientific community has increasingly focused on forming transformation products (TPs) from environmental organic pollutants. However, there is still a lot of discussion over how these TPs are generated and how harmful they are to living terrestrial or aquatic organisms. Potential transformation pathways, TP toxicity, and their mechanisms require more investigation. 
  • 824
  • 22 Feb 2022
Topic Review
Green Synthesis of Nanoparticles and Hazardous Wastes
The combination of two sciences, i.e., nanotechnology and biotechnology, is gradually expanding its roots in almost all the sectors involving biology, engineering, cosmetics, remediation, biomedical, agriculture, food and so on. Numerous nanoscale (below 100 nm) materials show remarkable features in contrast to their bulk elements and components. With progressive studies, researchers have developed nano-based composites and materials, and found their effective applicatin in almost every field including waste remediation, solar applications, and nano-sensors.
  • 823
  • 19 Jan 2023
Topic Review
Climate Change Denial: Heads in the Sand
Climate Change Denial: Heads in the Sand is a non-fiction book about climate change denial, coauthored by Haydn Washington and John Cook, with a foreword by Naomi Oreskes. Washington had a background in environmental science prior to authoring the work, and Cook was educated in physics and founded the website Skeptical Science which compiles peer-reviewed evidence of global warming. The book was first published in hardcover and paperback formats in 2011 by Earthscan, a division of Routledge. The book presents an in-depth analysis and refutation of climate change denial, going over several arguments point-by-point and disproving them with peer-reviewed evidence from the scientific consensus for climate change. The authors assert that those denying climate change engage in tactics including cherry picking data purported to support their specific viewpoints, and attacking the integrity of climate scientists. They use social science theory to examine the phenomenon of climate change denial in the wider public, and call this phenomenon a form of pathology. The book traces financial support for climate change denial to the fossil fuel industry, asserting these companies have attempted to influence public opinion on the matter. Washington and Cook write that politicians have a tendency to use weasel words as part of a propaganda tactic through use of spin, as a way to deflect public interest away from climate change and remain passive on the issue. The authors conclude that if the public ceased engaging in denial, the problem of climate change could be realistically addressed. For his research on the book, and efforts in communicating the essence of climate change science to the general public, John Cook won the 2011 Australian Museum Eureka Prize for Advancement of Climate Change Knowledge. Climate Change Denial received a positive reception in reviews from publications including: The Ecologist, ECOS magazine, academic journal Natures Sciences Sociétés, the journal Education published by the New South Wales Teachers Federation,. An article in The New American was critical, describing the labels of "deniers" and "denialists" as cruel and forms of character assassination.
  • 822
  • 01 Nov 2022
Topic Review
Ecotoxicological Impact of Bioplastics Biodegradation
The emergence of bioplastics presents a promising solution to the environmental impact of the plastics industry. Bioplastics are engineered to degrade in aquatic or soil environments. However, not all bioplastics are completely biodegradable, and some, like petrochemical-based plastics, may contribute to plastic pollution. The biodegradability of bioplastics is significantly different in different environmental conditions such as soil, marine, and composting environments. At the same time, bioplastics produced from natural resources contain a mixture of known and unknown materials and show 32% cytotoxicity, 42% oxidative stress, 67% baseline toxicity, and 23% antiandrogenicity in bioassays. The extensive biodegradation of bioplastics in soil can also change the soil nutrients, leading to eutrophication or stunted plant growth. However, many concerns have arisen, according to which bioplastics may not be an alternative option for global plastic pollution in the long run, and limited studies focus on this scenario. 
  • 819
  • 22 Dec 2023
Topic Review
Practical Application of Temperature Indices in Horticulture
Temperature is the basic factor that differentiates vegetation around the world. All field experiments require the indication of the range of temperatures occurring in a given growing season. Temperature is an important factor determining fruit plant production, both in the growing season and in the winter dormant period. Various air temperature indicators were developed in a way that allowed the best possible description of adaptations of species, cultivars, and regions of adaptations to cultivation. They are based on experimentally obtained data and calculated optimal temperatures of growth and development of plants in particular development stages. In horticulture, the description of dependencies of the growth and development of plants on weather began to be accompanied with the development of simulation models.
  • 817
  • 22 May 2023
Topic Review
Advanced Oxidation Technologies
Advanced oxidation process (AOPs) based on sulfate radical (SO4●−) and singlet oxygen (1O2) has attracted a lot of attention because of its characteristics of rapid reaction, efficient treatment, safety and stability, and easy operation. SO4●− and 1O2 mainly comes from the activation reaction of peroxymonosulfate (PMS) or persulfate (PS), which represent the oxidation reactions involving radicals and non-radicals, respectively. The degradation effects of target pollutants will be different due to the type of oxidant, reaction system, activation methods, operating conditions, and other factors.
  • 815
  • 12 Oct 2022
Topic Review
UASs Application in Viticultural Scenarios
New technologies for management, monitoring, and control of spatio-temporal crop variability in precision viticulture scenarios are numerous. Remote sensing relies on sensors able to provide useful data for the improvement of management efficiency and the optimization of inputs. unmanned aerial systems (UASs) are the newest and most versatile tools, characterized by high precision and accuracy, flexibility, and low operating costs. 
  • 811
  • 15 Mar 2021
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