scholarly journals Post-Covid-19 Pandemic Awareness on The Use of Micro- and Nano Plastic and Efforts into Their Degradation - A Mini Review

2021 ◽  
Vol 11 (2) ◽  
pp. 225-232
Author(s):  
Ekwan Wiranto ◽  
◽  
Amira Rozdhl ◽  
Nafizatun Hanafi ◽  
Rabiatul Redzuan ◽  
...  
Keyword(s):  
Circulatory System ◽  
Aquatic Organisms ◽  
Living Organism ◽  
Global Scale ◽  
Trophic Levels ◽  
Negative Effects ◽  
Debris Particles ◽  
Characteristic Effect ◽  
Living Organisms ◽  
Global Threat

Micro- and nanoplastic pollution possess a global threat and cause a future problem and needs greater attention. Its pollution is also exacerbated recently by the use of abundance of plastic polymers in efforts to prevent and handle COVID-19 pandemic at the global scale. This review covered the major concerns about the characteristic, effect and bioremediation of micro- and nanoplastics of post COVID-19. Based on size, microplastic is described as debris particles smaller than 5 mm whereas, nanoplastic is referred to any particles smaller than 100 nm. Micro- and nanoplastic are easily ingested by many aquatic organisms at different trophic levels. This ingestion caused negative health impacts to all living organisms. Microplastic direct effect on living organism for example mechanical injury, false satiation, declined growth, promoted immune response, energy loss, disrupted enzyme activity and production, decreased fecundity, production of oxidative stress, and mortality. Nanoplastic could enter the circulatory system and caused negative effects on the cellular and molecular levels. Bioremediation of microplastic by magnoliophyta, bacteria, fungus and algae on several polymer forms was previously reported, however, not many on nanoplastic biodegradation. Therefore, current review will focus on the characteristics, effect and bioremediation effort of micro- and nanoplastic.

scholarly journals Microplastics as a potential risk for aquatic environment organisms – a review

2021 ◽  
Vol 90 (1) ◽  
pp. 99-107
Author(s):  
Aneta Hollerová ◽  
Nikola Hodkovicová ◽  
Jana Blahová ◽  
Martin Faldyna ◽  
Petr Maršálek ◽  
...  
Keyword(s):  
Aquatic Environment ◽  
Plastic Material ◽  
Aquatic Organisms ◽  
Global Scale ◽  
Trophic Levels ◽  
Modern World ◽  
Negative Effects ◽  
Plastic Debris ◽  
Industrial Manufacturing ◽  
High Bioavailability

In the modern world, plastic has become a major commodity on global scale and is presented in all life aspects. The production of plastics is increasing dramatically throughout the world and is considered to be a serious threat for the aquatic environment. Scientists started to raise questions as to where all the disappeared plastic debris had gone, as the plastic material is a persistent synthetic polymer. The disappearance of plastic suggests that microplastics are generated by fragmentation of larger plastic debris. They also enter the aquatic environment from the cosmetics, clothing, and other industrial manufacturing. Microplastic particles spread in the aquatic, terrestrial, and atmospheric environments due to their small size and ubiquity, showing their high bioavailability. The presence of microplastics has been demonstrated in the digestive tracts of most aquatic organisms at various trophic levels. Evidence of negative effects of microplastics has been found in relation to fertility, mortality, oxidative stress, immune system or metabolic processes.

scholarly journals Teologie en ekologie

1988 ◽  
Vol 44 (1) ◽  
Author(s):  
B. J. Engelbrecht
Keyword(s):  
Biological Sciences ◽  
Industrial Revolution ◽  
Living Organism ◽  
Global Scale ◽  
Ecological Crisis ◽  
Standard Of Living ◽  
Life Patterns ◽  
Religious Issues ◽  
Living Organisms ◽  
Main Components

Theology and ecology Ecology is a term traditionally used in the biological sciences. The word 'ecology' used in this sense means the science which studies the relation of living organisms (usually plants and animals) with their environment and the resultant life patterns. Changes in the environment result in changes of the life patterns of the living organism in that ecosystem. Since the industrial revolution and especially in the past decades man has so drastically changed the ecosystems on a global scale that he is no longer an outsider and consumer in this process; man is intimately involved not only as change-agent, but also as one whose life, standard of living, future and very existence is at stake. And where man and his future is so intimately involved, ethical and theological questions arise and call to be addressed. This paper deals with the main components and extent of the present ecological crisis and with the theological response to the ethical and religious issues involved.

Effects of trophic status and wetland morphology, hydroperiod, and water chemistry on mercury concentrations in fish

2000 ◽  
Vol 57 (1) ◽  
pp. 171-180 ◽  
Author(s):  
Joel W Snodgrass ◽  
Charles H Jagoe ◽  
A Lawrence Bryan, Jr. ◽  
Heather A Brant ◽  
J Burger
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Water Chemistry ◽  
Maximum Depth ◽  
Trophic Levels ◽  
Whole Body ◽  
Regression Analyses ◽  
Negative Effects ◽  
Depression Wetlands ◽  
Negative Effect

We sampled fish and selected water chemistry variables (dissolved organic carbon, sulfate, and pH) in nine southeastern depression wetlands to determine relationships among wetland morphology (surface area and maximum depth), hydrology, water chemistry, and bioaccumulation of mercury (Hg) in fishes. We concentrated on three fish species representing the range of trophic levels occupied by fish in southeastern depression wetlands. Whole-body Hg concentrations were lowest in lake chubsucker (Erimyzon sucetta), a benthic detritivore, and highest in redfin pickerel (Esox americanus americanus), a top carnivore. However, variation in Hg concentrations among wetlands was greater than variation among species. Regression analyses indicated that maximum depth and hydroperiod accounted for significant portions of variation among wetlands in standardized lake chubsucker and redfin pickerel Hg concentrations. Maximum depth and dissolved organic carbon had a negative effect on standardized Hg concentrations in mud sunfish (Acantharchus pomotis). Path analysis confirmed the results of regression analyses, with maximum depth and hydroperiod having relatively large direct negative effects on Hg concentrations. Our results suggest that leaching of Hg from sediments during the drying and reflooding cycle and binding of Hg species by dissolved organic carbon in the water column are primary factors controlling the bioavailability of Hg in southeastern depression wetlands.

Heavy metals in aquatic organisms of different trophic levels and their potential human health risk in Bohai Bay, China

2016 ◽  
Vol 23 (17) ◽  
pp. 17801-17810 ◽  
Author(s):  
Yan Zhang ◽  
Xueqiang Lu ◽  
Naili Wang ◽  
Meinan Xin ◽  
Shiwei Geng ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Health Risk ◽  
Human Health ◽  
Human Health Risk ◽  
Aquatic Organisms ◽  
Trophic Levels ◽  
Bohai Bay ◽  
Potential Human Health Risk ◽  
Potential Human Health

Chlorinated C 1 and C 2 hydrocarbons in the marine environment

1975 ◽  
Vol 189 (1096) ◽  
pp. 305-332 ◽  
Keyword(s):  
Carbon Tetrachloride ◽  
Acute Toxicity ◽  
Microbial Degradation ◽  
Chemical Industry ◽  
Aquatic Organisms ◽  
Trophic Levels ◽  
Food Chains ◽  
Laboratory Bioassay ◽  
Marine Food ◽  
Chemical Manufacture

A range of chlorinated hydrocarbons derived from C 1 and C 2 hydrocarbons is manufactured industrially. They are used as intermediates for further chemical manufacture and also outside the chemical industry as solvents or carriers. In the latter category losses in use are eventually dispersed to the environment. The distribution of some of these compounds, including chloroform, carbon tetrachloride, trichloroethylene, perchloroethylene and trichloroethane, in the environment (air, water and marine sediments) has been investigated and the results are presented. The concentrations found have been compared with acute toxicity levels to fish and other aquatic organisms, ascertained by laboratory bioassay. The occurrence of the compounds has been determined in a number of marine organisms, especially those at higher trophic levels, and the accumulation of some of them has been investigated in the laboratory. Chemical and microbial degradation processes have been studied in the laboratory to help determine the course of their removal from the aqueous and aerial environment, and the half lives of some of the compounds have been estimated. It is concluded that these compounds are not persistent in the environment, and that there is no significant bioaccumulation in marine food chains.

scholarly journals Environmental Risk Assessment of Vehicle Exhaust Particles on Aquatic Organisms of Different Trophic Levels

Toxics ◽  
2021 ◽  
Vol 9 (10) ◽  
pp. 261
Author(s):  
Konstantin Pikula ◽  
Mariya Tretyakova ◽  
Alexander Zakharenko ◽  
Seyed Ali Johari ◽  
Sergey Ugay ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Sea Urchin ◽  
Urban Areas ◽  
Aquatic Organisms ◽  
Artemia Salina ◽  
Trophic Levels ◽  
Submicron Particles ◽  
Vehicle Exhaust ◽  
Exhaust Particles ◽  
The Difference

Vehicle emission particles (VEPs) represent a significant part of air pollution in urban areas. However, the toxicity of this category of particles in different aquatic organisms is still unexplored. This work aimed to extend the understanding of the toxicity of the vehicle exhaust particles in two species of marine diatomic microalgae, the planktonic crustacean Artemia salina, and the sea urchin Strongylocentrotus intermedius. These aquatic species were applied for the first time in the risk assessment of VEPs. Our results demonstrated that the samples obtained from diesel-powered vehicles completely prevented egg fertilization of the sea urchin S. intermedius and caused pronounced membrane depolarization in the cells of both tested microalgae species at concentrations between 10 and 100 mg/L. The sample with the highest proportion of submicron particles and the highest content of polycyclic aromatic hydrocarbons (PAHs) had the highest growth rate inhibition in both microalgae species and caused high toxicity to the crustacean. The toxicity level of the other samples varied among the species. We can conclude that metal content and the difference in the concentrations of PAHs by itself did not directly reflect the toxic level of VEPs, but the combination of both a high number of submicron particles and high PAH concentrations had the highest toxic effect on all the tested species.

scholarly journals Microbial bioenergetics of coral-algal interactions

PeerJ ◽  
2017 ◽  
Vol 5 ◽  
pp. e3423 ◽  
Author(s):  
Ty N.F. Roach ◽  
Maria L. Abieri ◽  
Emma E. George ◽  
Ben Knowles ◽  
Douglas S. Naliboff ◽  
...  
Keyword(s):  
Power Output ◽  
Energy Use ◽  
Human Impacts ◽  
Global Scale ◽  
Trophic Levels ◽  
Maximal Power Output ◽  
Bioenergetic Analysis ◽  
Lower Oxygen ◽  
Thermodynamic Mechanism ◽  
Oxygen Concentrations

Human impacts are causing ecosystem phase shifts from coral- to algal-dominated reef systems on a global scale. As these ecosystems undergo transition, there is an increased incidence of coral-macroalgal interactions. Mounting evidence indicates that the outcome of these interaction events is, in part, governed by microbially mediated dynamics. The allocation of available energy through different trophic levels, including the microbial food web, determines the outcome of these interactions and ultimately shapes the benthic community structure. However, little is known about the underlying thermodynamic mechanisms involved in these trophic energy transfers. This study utilizes a novel combination of methods including calorimetry, flow cytometry, and optical oxygen measurements, to provide a bioenergetic analysis of coral-macroalgal interactions in a controlled aquarium setting. We demonstrate that the energetic demands of microbial communities at the coral-algal interaction interface are higher than in the communities associated with either of the macroorganisms alone. This was evident through higher microbial power output (energy use per unit time) and lower oxygen concentrations at interaction zones compared to areas distal from the interface. Increases in microbial power output and lower oxygen concentrations were significantly correlated with the ratio of heterotrophic to autotrophic microbes but not the total microbial abundance. These results suggest that coral-algal interfaces harbor higher proportions of heterotrophic microbes that are optimizing maximal power output, as opposed to yield. This yield to power shift offers a possible thermodynamic mechanism underlying the transition from coral- to algal-dominated reef ecosystems currently being observed worldwide. As changes in the power output of an ecosystem are a significant indicator of the current state of the system, this analysis provides a novel and insightful means to quantify microbial impacts on reef health.

scholarly journals FAILURE ANALYSIS AND REDESIGNING OF INTERNAL FIXATION SCREWS

2021 ◽  
Vol 5 (12) ◽  
Author(s):  
Seshasai Srihari Hanuma Ravinuthala ◽  
B Sai Sri Harshita
Keyword(s):  
Failure Analysis ◽  
Internal Fixation ◽  
Case Studies ◽  
Living Organism ◽  
Operational Procedure ◽  
Fixation Screw ◽  
Quality Checks ◽  
Reliable Design ◽  
Living Organisms ◽  
Operational Failure

Its highly impossible for false proofing the super structures or mechanisms or the metallurgical methods after installation so they are perfectly engineered and dispatched only after a series of quality checks which has a proper methodology. If this is the scenario with the non living structure's components if they were engineered without errors. There must be some more intensity with the living organisms. living organisms are not engineered but the engineering of the ailments or aids which support the life of living organism must be error free and perfect also must be ready to use. In this context it's pity that there is no perfect operational procedure for internal fixation of fractures this thesis Is focused on that area and aimed to derive a reliable design of internal fixation screw which is designed in contrast with conventional screw This project is stimulation out from two case studies of operational failure implant removal.

scholarly journals EFFECTS OF PESTICIDES ON MALE FARMER’S HEALTH: A STUDY OF MUZAFFAR GARH

2019 ◽  
Vol 56 (04) ◽  
pp. 1021-1030
Author(s):  
Muhammad Ali Tarar
Keyword(s):  
Urban Areas ◽  
Family Income ◽  
Family System ◽  
Sampling Technique ◽  
Living Organism ◽  
Respiratory Disorder ◽  
Negative Effects ◽  
Excessive Sweating ◽  
Multistage Sampling ◽  
Risk Of Cancer

Application of pesticides are made to control those insects and pest that approach the crops and damage them. From centuries, for the protection of crops, different sorts of pesticides are in practice. On the one hand pesticide benefits the crops, meanwhile it injurious for environment and & human health. Because it’s unnecessary application poses negative effects on biodiversity and all living organism i.e. birds, animals and human etc. faces threats for their survival. Study objectives were (i) to find out the effects of pesticides on farmer’s health and (ii) to suggest some recommendations for future policy to improve farmer’s health. For this study, a sample of 160 respondents (male farmers) were selected through multistage sampling technique. At first stage, 4 union councils from total 111 UCs, at second stage, 8 localities/ Basties /urban areas (2 from each union council) were selected randomly and at third stage, 20 respondents from each locality were selected by convenient sampling technique. Results showed that majority respondents were young illiterate married persons who were living in joint family system (62.5%); had family income Rs. 12,001-25,000 (63.1%); land tendency status of majority (91.3%) was own cultivator and 1-4 acres cultivate per year (45.0%). Majority (86.9%) of the respondents said that through inhalation source pesticides enter the human body and they prepared the pesticides stuff in field (94.3%). Data also showed about pesticides usage in crops and its different effects on farmer’s health i.e. heard about illness caused by pesticides (87.5%); is cause of air pollution (65.6%); pesticides particularly harmful for farm workers health (88.8%); after the application of pesticides, farmers faced health problems (83.8%); family members felt sick (71.9%) while after handling pesticides they faced shortness of breath (75.6%); experienced redness of skin (69.4%), nervous disorder (77.5%), headache (56.9%), excessive sweating (51.2%), diarrhea (75.0%); abdominal pain (73.1%); eyes burning (85.0%); respiratory disorder (76.3%); dry cough (80.0%); fever (81.2%); dry throat (84.4%); sleeplessness and laziness (76.9%); vomiting (78.8%); vision disturbance (86.9%) and pesticides usage is the risk of cancer (81.9%). Data showed that during pesticides spray respondents used the different personal protective equipment i.e. ordinary clothes to apply pesticides (98.1%); long-sleeved shirt (81.9%); spray coat with hoods (80.0%); gumboots (85.0%); nose masks (89.4%); goggles (66.2%) and hand gloves (66.9%) as well as take a shower immediately after mixing/ spraying (86.9%). Bi-variate analysis showed significant relationship between more the use of improper goggles vs. more the burning of eyes and more the use of improper nose mask vs. more the respiratory disorder problems among farmers. Govt. need to take strict action & measures against producers of hazardous & injurious pesticides and through intensive trainings, & short term courses guide farmers regarding safe & harmless application of pesticides to protect themselves

scholarly journals Microplastics - an emerging silent menace to public health

2021 ◽  
Vol 5 (10) ◽  
Author(s):  
Li-Yin Pang ◽  
Shola Sonagara ◽  
Oreoluwatomide Oduwole ◽  
Christopher Gibbins ◽  
Ting Kang Nee
Keyword(s):  
Public Health ◽  
Health Effects ◽  
Mammalian Cells ◽  
Circulatory System ◽  
Epidemiological Studies ◽  
Specific Effects ◽  
Important Pathway ◽  
Living Organisms ◽  
Respiratory Conditions

Over the past few decades, microplastics have become increasingly ubiquitous in the environment and now contaminate the bodies of many living organisms, including humans. Microplastics, as defined here, are plastics within the size range 0.1 μm and 5 mm and are a worrying form of pollution due to public health concerns. This mini-review aims to summarise the route of entry of microplastics into humans and explore the potential detrimental health effects of microplastics. Trophic transfer is an important pathway for microplastic to be transferred across different groups of organisms, with ingestion is regarded as one of the major routes of exposure for humans. Other pathways include inhalation and dermal contact. The health consequences of microplastics manifest because these materials can translocate into the circulatory system and accumulate in the lungs, liver, kidney, and even brain, regardless of the route of entry. Health effects include gastrointestinal disturbances such as inflammation and gut microbiota disruption, respiratory conditions, neurotoxicity and potential cancers. Overall, while it is apparent that microplastics are causing adverse effects on different biological groups and ecosystems, current research is largely focused on marine organisms and aquaculture. Therefore, more studies are needed to investigate specific effects in mammalian cells and tissues, with more long-term epidemiological studies needed on human population considered to be at high-risk due to socioeconomic or other circumstance. Knowledge of the toxicity and long-term health impacts of microplastics is currently limited and requires urgent attention.

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