Activity of Acid Phosphatase and Desoxyribonuclease in Hydrobionts under the Impact of Different Toxic Substances of the Aquatic Medium

2012 ◽  
Vol 48 (3) ◽  
pp. 87-98
Author(s):  
I. L. Tsvetkov ◽  
A. P. Popov ◽  
A. S. Konichev
Keyword(s):  
Acid Phosphatase ◽  
Toxic Substances ◽  
Aquatic Medium ◽  
The Impact

Peculiarities of Course of the Transamination Reactions in the Carp Organism under the Impact of Organophosphoric Compound in the Aquatic Medium

2013 ◽  
Vol 49 (4) ◽  
pp. 113-116
Author(s):  
M. O. Myroniuk ◽  
I. G. Kuklia ◽  
L. O. Gorbatiuk ◽  
S. P. Burmistrenko ◽  
O. M. Arsan
Keyword(s):  
Aquatic Medium ◽  
The Impact

U.S. Regulatory Approaches: A Critical Appraisal

1992 ◽  
Vol 25 (3) ◽  
pp. 13-21
Author(s):  
R. L. Williamson
Keyword(s):  
Decision Making ◽  
Command And Control ◽  
Regulatory System ◽  
Federal Agencies ◽  
Toxic Substances ◽  
Use Of Technology ◽  
Treatment Technologies ◽  
New Treatment ◽  
And Control ◽  
The Impact

The American approach to environmental regulation is characterized by fragmentation of responsibilities, primary reliance on command and control regulations, extraordinary complexity, a preference for identifiable standards, and heavy resort to litigation. This system has provided important benefits, including significant reduction of environmental contamination, substantial use of science in decision-making, broad participatory rights, and the stimulation of new treatment technologies. However, these gains have been achieved at excessive cost. Too much reliance is placed on command and control methods and especially on technology-based standards. There is too much resort to litigation, and inadequate input from science. Participatory rights are being undermined, and there is a poor allocation of decision-making among the federal agencies and the states. Over-regulation sometimes leads to under-regulation, and insufficient attention is given to the impact on small entities. The responsibility for these difficulties rests with everyone, including the federal agencies, the Congress, the general public and the courts. Changes in the regulatory system are needed. We should abandon the use of technology-based standards to control toxic substances under the Clean Water Act in favor of strong health- and environmentally based standards, coupled with taxes on toxic substances in wastewater.

Evaluation of Toxicity in Receiving Streams

1992 ◽  
Vol 26 (9-11) ◽  
pp. 2357-2360
Author(s):  
J. Zagorc-Koncan ◽  
M. Dular
Keyword(s):  
Dissolved Oxygen ◽  
Toxic Substances ◽  
Toxicity Evaluation ◽  
Copper Cyanide ◽  
Polluted River ◽  
Design Information ◽  
Point Of Entry ◽  
Receiving Stream ◽  
The Impact

A laboratory river model for the study of self-purification inhibition in a stream containing toxic substances is presented. It enables an engineering - technological prediction of the impact of toxic substances or wastewaters on dissolved oxygen (DO) profile in an organically polluted river downstream from the point of entry of toxic effluent thus providing rapidly and inexpensively significant design information to an environmental scientist or engineer. The method was applied to the toxicity evaluation of wastewaters from electroplating industry. The effects of copper, cyanide (representing two significant constituents of this type of wastewaters) and wastewater from electroplating industry on the biodegradation of organic municipal pollution in receiving stream were evaluated experimentally.

scholarly journals Compulsive Buying in Adolescents. The Impact of Gender and Alcohol and Cannabis Use

2021 ◽  
Vol 13 (7) ◽  
pp. 3982
Author(s):  
Gloria Pérez de Albéniz-Garrote ◽  
Maria Begoña Medina-Gómez ◽  
Cristina Buedo-Guirado
Keyword(s):  
Compulsive Buying ◽  
Cannabis Use ◽  
Descriptive Statistics ◽  
Cluster Sampling ◽  
Toxic Substances ◽  
Higher Alcohol ◽  
Random Cluster ◽  
Prevention Programmes ◽  
The Impact ◽  
Buying In

The purpose of this study to analyse whether compulsive buying in teenagers is related to gender and alcohol and cannabis use in a sample of 573 students aged 14–17 from secondary education schools in Burgos (Spain) (M = 15.65; SD = 1.04). Random cluster sampling was performed to select the sample. The Compulsive Buying Questionnaire was used together with two extra promts: ‘Indicate how much alcohol you consume’ and ‘Indicate how much cannabis you take’. Descriptive statistics were used in data analysis, while MANOVA was used to study gender differences in alcohol and cannabis use, compulsive buying and their interaction. The results show higher scores for female compulsive buyers than for men, higher scores for alcohol and cannabis users’ compulsive buying than for non-users, respectively, and higher scores for female users than for male users. A certain interaction was also observed between alcohol and cannabis use. A higher alcohol consumption entailed a higher score in compulsive buying, with cannabis users who did not consume alcohol obtaining the highest scores. Thus, prevention programmes should consider teenagers’ gender and the risk of taking toxic substances.

Bioresilience to Mercury Chloride of the Brine Shrimp Artemia Salina after Treatment with Homeopathic Mercurius Corrosivus

Homeopathy ◽  
2021 ◽  
Author(s):  
Andreia Adelaide G. Pinto ◽  
Mirian Y. de Oliveira Nagai ◽  
Ednar Nascimento Coimbra ◽  
Suham Nowrooz Mohammad ◽  
Jefferson Souza Silva ◽  
...  
Keyword(s):  
Sea Water ◽  
Specific Interaction ◽  
Artemia Salina ◽  
Mercury Content ◽  
Mercury Chloride ◽  
Hatching Rate ◽  
Toxic Substances ◽  
Protective Effects ◽  
Cyst Hatching ◽  
The Impact

Abstract Introduction Finding solutions to mitigate the impact of pollution on living systems is a matter of great interest. Homeopathic preparations of toxic substances have been described in the literature as attenuation factors for intoxication. Herein, an experimental study using Artemia salina and mercury chloride was developed as a model to identify aspects related to bioresilience. Aims The aim of the study was to describe the effects of homeopathic Mercurius corrosivus (MC) on Artemia salina cysts hatching and on mercury bioavailability. Methods Artemia salina cysts were exposed to 5.0 µg/mL of mercury chloride during the hatching phase. MC potencies (6cH, 30cH, and 200cH) were prepared in sterile purified water and poured into artificial sea water. Different controls were used (non-challenged cysts and challenged cysts treated with water, succussed water, and Ethilicum 1cH). Four series of nine experiments were performed to evaluate the percentage of cyst hatching. Soluble total mercury (THg) levels and precipitated mercury content were also evaluated. Solvatochromic dyes were used to check for eventual physicochemical markers of MC biological activity. Results Significant delay (p < 0.0001) in cyst hatching was observed only after treatment with MC 30cH, compared with controls. This result was associated with an increase of THg concentration in water (p = 0.0018) and of chlorine/oxygen ratio (p < 0.0001) in suspended micraggregates, suggesting changes in mercury bioavailability. A specific interaction of MC 30cH with the solvatochromic dye ET33 (p = 0.0017) was found. Conclusion Changes in hatching rate and possible changes in Hg bioavailability are postulated as protective effects of MC 30cH on Artemia salina, by improving its natural bioresilience processes.

scholarly journals Immunosuppression-lipid Metabolism Interplay and Medicinal Plants in Atherosclerosis: A Review

2018 ◽  
Vol 24 (24) ◽  
pp. 2789-2793 ◽  
Author(s):  
Fahimeh Moradi ◽  
Robert D.E Sewell ◽  
Zahra Lorigooini ◽  
Mahmoud Rafieian-Kopaei
Keyword(s):  
Critical Role ◽  
Arterial Disease ◽  
Toxic Substances ◽  
Synthetic Drugs ◽  
Related Quality ◽  
Health Related ◽  
Negative Side Effects ◽  
Atherosclerosis Development ◽  
The Impact

Atherosclerosis is a chronic arterial disease responsible for the majority of vascular-related deaths throughout the world. Immune cells and inflammation in conjunction with hyperlipidemia play a key role in atherosclerosis development. Regarding the low efficacy of the synthetic drugs and also the associated negative side effects which can adversely influence health-related quality of life, looking for natural, affordable and non-toxic substances seem necessary. Plant-derived natural products play a critical role in the prevention and treatment of atherosclerosis. In this review, we aimed to outline the most important medicinal herbs effective for atherosclerosis through the impact on immune system.

scholarly journals The impact of ignition system damage on the emission of toxic substances in a spark-ignition internal combustion engine

2019 ◽  
Vol 179 (4) ◽  
pp. 86-92
Author(s):  
Mieczysław DZIUBIŃSKI ◽  
Ewa SIEMIONEK ◽  
Artur DROZD ◽  
Michał ŚCIRKA ◽  
Adam KISZCZAK ◽  
...  
Keyword(s):  
Internal Combustion Engine ◽  
Combustion Engine ◽  
Internal Combustion ◽  
Spark Ignition ◽  
Operating Conditions ◽  
Spark Ignition Engine ◽  
Exhaust Gas ◽  
Toxic Substances ◽  
Ignition System ◽  
The Impact

The article discusses the impact of ignition system damage on the emission of toxic subcategories in a spark-ignition internal combustion engine. The aim of the work was to develop an analytical model of ignition system diagnostics, test performance and comparative analysis of the results of simulations and experiments. The model developed allows to analyse the basic parameters of the ignition system affecting the content of toxic substances in the exhaust. Experimental tests were carried out using the MAHA MGT5 exhaust gas analyser for four different combustion engines fueled with petrol at various operating conditions. During the tests, the content of toxic substances in the exhaust gas of a properly working engine and the engine working with damage to the ignition system were registered. The tests will be used to assess the impact of the damage of the spark-ignition engine on the emission of individual components of toxic fumes.

scholarly journals Acid Phosphatase Activity in Freshwater Ecosystems of Western Cuba and its Relationship with Water Quality

2021 ◽  
Author(s):  
Jeny Adina Larrea Murrell ◽  
Beatriz Romeu Alvarez ◽  
Daysi Lugo Moya ◽  
Marcia M. Rojas Badía
Keyword(s):  
Escherichia Coli ◽  
Acid Phosphatase ◽  
Phosphatase Activity ◽  
Acid Phosphatase Activity ◽  
Oxygen Demand ◽  
N:P Ratio ◽  
Freshwater Ecosystems ◽  
San Juan ◽  
San Juan River ◽  
The Impact

Abstract Enzyme activity plays an important role in the functioning of aquatic ecosystems. It is sensitive to changes in environmental conditions such as pH, temperature, and nutrient concentration. The objective of this work was to determine the acid phosphatase activity (AcPA) in the Almendares and San Juan rivers (western Cuba) and its relationship with physicochemical and microbiological indicators. For this purpose, AcPA, temperature, pH, total dissolved solids, electrical conductivity, dissolved oxygen, concentration of nitrates, nitrites, ammonium, phosphates, total heterotrophs, enterococci, Escherichia coli, thermotolerant coliforms, chlorophyll a and chemical oxygen demand (COD) were determined at three sampling stations on the Almendares River and at three sampling stations on the San Juan River. In addition, the nutrient pollution index (NPI) and the N:P ratio were calculated. In both ecosystems, spatio-temporal variability was observed in the enzymatic activity. In the Almendares River (polluted ecosystem), AcPA was positively correlated with nitrate concentration and COD. While in the San Juan River (slightly contaminated ecosystem) the AcPA correlated negatively with the pH and NPI and positively with the concentrations of total heterotrophs, Escherichia coli, chlorophyll a and the N:P ratio. These results show the impact of anthropogenic pollution on AcPA in freshwater ecosystems with a tropical climate.

Present and future applications of enterosorbents in the prevention and treatment of adverse effects of heavy metal compounds

2020 ◽  
pp. 42-47
Author(s):  
A. V. Fomichev ◽  
A. E. Sosyukin ◽  
E. V. Malysheva ◽  
V. S. Litvinсev ◽  
N. V. Lapina ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Modern Science ◽  
The Body ◽  
Biologically Active ◽  
Toxic Substances ◽  
Metal Compounds ◽  
Medicinal Substances ◽  
Relationship Of ◽  
The Impact

Research of the last decade, which revealed the relationship of various socially significant diseases (Alzheimer’s disease, parkinsonism, multiple sclerosis, etc.) with the impact of heavy metals on the human body, stimulates modern science to create drugs that can quickly and safely remove these toxic substances from the body. The article presents a review of studies on the effectiveness of heavy metal adsorption by modern enterosorbents officially registered in the Russian Federation as drugs. The prospects of using non-starch polysaccharides, which are part of modern biologically active additives, in order to create new medicinal substances for the elimination of heavy metals that pose a threat to public health are indicated.

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