Toxic components

In the study "Distribution, fate and ecological toxicity of some heavy metals in sediment: A case study from Day river downstream, Vietnam" the 50 surface sediment samples were collected along Day River downstream in July 2018 and January 2019 (25 sampling sites) to clarify the status, movement and potential risk of some heavy metals (Cr, Pb, Cu, Cd and Hg). The receptor model of Principal Component Analysis (PCA) was applied to track the source types of these metals.

11p tukhauquantuong1011 22-04-2024 6 3   Download

Ebook "Thermophilic carboxydotrophs and their applications in biotechnology" describes the products produced by carboxydotrophic bacteria and their biotechnological applications. Carbon monoxide (CO) is a widespread pollutant and a hazard to man because of its extremely toxic nature. It is a major component of some industrial gas mixtures and may be derived from coal. The carboxydotrophic bacteria obtain energy and carbon from the oxidation of CO. These organisms may be used to produce new metabolites, and the oxidases from them may be used to produce fuel cells and biosensors for CO.

137p manmanthanhla0201 26-02-2024 7 1   Download

In this study, we will summarize the results of several studies on the harmful effects of prolonged high-dose use of paracetamol on sperm number, quality, portability and testicular morphology in experimental animals and humans.

15p vispacex 16-11-2023 3 2   Download

Acrolein is a known pro-inflammatory toxic aldehyde, propagating cellular damage and tissue inflammation in humans and animal models of various diseases. Osteoarthritis (OA) has a signifcant infammatory component; however, presence of acrolein in synovial fluid of joints with OA has not been previously reported.

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In this paper, piperine-loaded chitosan nanoparticles (CTS-PIP NPs) were prepared by ionic gelation method. Molecular interactions among the components were confirmed by Fourier-transform infrared spectroscopy (FTIR) spectroscopy. The morphology of the prepared NPs was characterized by transmission electron microscopy image (TEM).

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The thesis consists of 135 pages, including 21 tables of data, 50 figures and 144 references. The structure of the thesis consists of: Introduction: 4 pages; Overview: 32 pages; Experimental part: 13 pages; Results and discussion: 63 pages; Recent contributions of the thesis: 1 page; The list of published works: 2 pages; References: 18 pages. There is also an appendix containing the spectrums and diagrams that measure the characteristics and properties of components and AG/CS/LOV, AG/CS/LOV/ginsenoside Rb1 composites with 11 pages.

30p prisonbreak123 21-05-2021 26 3   Download

The major component of Eucalyptus globulus is 1,8-Cineole (Eucalyptol) and has been recognized as a high ovipositional repellent and mild mosquito feeding repellent [8]. Chemical instability, volatility, propensity for oxidation and poor water solubility of essential oils make them inconvenient for extensive use [9]. Cymbopogon winterianus, commonly known as citronella, is native to the tropical and subtropical areas, consisting of citronellol, citronellal, and geraniol as its major compounds [10]. Cymbopogon oil has been proven to exhibit low acute toxicity in laboratory animals [11].

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Fermentation is a complicated process which depends on a variety of conditions. In order to gain high fermentation efficiency with a low level of toxins and impurities to obtain good products, it is essential to determine suitable conditions for the process. Within the scope of this study, the effects of some key conditions was estimated (i.e. pH, temperature, SO2 level in fermentation broth, the inoculation rates of yeast cells, sugar level) for the fermentation of corn with Saccharomyces cerevisiae MS42.

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Benzene is an established human leukemogen, with a ubiquitous environmental presence leading to significant population exposure. In a genome-wide functional screen in the yeast Saccharomyces cerevisiae, inactivation of IRA2, a yeast ortholog of the human tumor suppressor gene NF1 (Neurofibromin), enhanced sensitivity to hydroquinone, an important benzene metabolite.

9p vijennie2711 25-09-2020 14 1   Download

Although radiotherapy is a key component of curative-intent treatment for locally advanced, unresectable non-small cell lung cancer (NSCLC), it can be associated with substantial pulmonary toxicity in some patients. Current radiotherapy planning techniques aim to minimize the radiation dose to the lungs, without accounting for regional variations in lung function.

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Bacteria are ubiquitous in nature. Based on their role bacteria may be grouped as beneficial, spoilage causing and pathogens. The saprophytic group, involved in causing the spoilage of milk and milk products, produce various kinds of surfactants to utilize the milk components. Synthetic surfactants dominate in the market especially in detergent formulations and considered as non-biodegradable and toxic. Biosurfactants are surface metabolites produced by bacteria and fungi having very different chemical structures and properties.

5p trinhthamhodang7 31-08-2020 23 1   Download

Plant protection using synthetic pesticides has become one of the essential components of modern agriculture. Although need based judicious application of pesticides have made a significant impact on increasing crop productivity in agricultural sector by combating heavy losses due to pest infestation but there are lots of serious associated bottlenecks with pesticides. The major issues related to pesticide application are environmental pollution, health hazards, pest resurgence, secondary pest outbreak etc.

11p angicungduoc6 22-07-2020 17 1   Download

Accelerated exploitation of oil and gas resources planned and implemented by ONGC and BGEIPL in west coast offshore region would result into stress particularly on marine environment. The long term physical, chemical and biological changes due to routine discharges from offshore installations can best be assessed through a study on accumulation of hydrocarbons and heavy metals in fishes, plankton and sediments which together form biotic and abiotic components of marine environment.

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The increased selection pressure of the herbicide glyphosate has played a role in the evolution of glyphosate-resistance in weedy species, an issue that is becoming a threat to global agriculture. The molecular components involved in the cellular toxicity response to this herbicide at the expression level are still unidentified.

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Jatropha curcas L. is a potential biofuel plant and its seed oil is suitable for biodiesel production. Despite this promising application, jatropha seeds contain two major toxic components, namely phorbol esters and curcins.

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There have been experiments with laying hens divided into 4 groups which receive rations with different amounts of lead and cadmium. The amount and distribution of the two toxic elements in the egg components have been studied and the environmental risk for human food use has been assessed. Two new criteria defining the chemical heterogeneity of the biosphere at sub-organismal level have been devised: Clark of distribution and Clark of safety. These criteria are proposed to increase the effectiveness of management.

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Precision medicine promises to improve both the efficacy and safety of therapeutic products by better informing why some patients respond well to a drug, and some experience adverse reactions, while others do not. Pharmacogenomics is a key component of precision medicine and can be utilized to select optimal doses for patients, more precisely identify individuals who will respond to a treatment and avoid serious drug-related toxicities.

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The presence of Blue-green algae (BGA) toxins in surface water sources and recreation is receiving increasing attention around the world as a public health concern. However, potential risks from exposure to these toxins in contaminated health food products that contain BGA have been largely ignored. Toxic BGA produces compound called microcystin. Fine-grained sediment is a natural and essential component of river systems and plays a major role in the hydrological, geo-morphological and ecological functioning of rivers.

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Indian Horse Chestnut (Aesculus indica) seeds are processed for improving its edible quality as it contains toxic components. Moreover, it is gluten and fibre free and termed as processed flour, locally known as tatwakhar, is utilized to standardized and developed value added products in bakery viz. Energy Bar, Short Bread, Brownies, Cookies, Chocolate Cake, Cup Cake, and Jamie Bodgers and analyzed for its proximate composition.

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Phenol and its components are extremely toxic and can easily be isolated from different industrial sewage such as oil refinery, petrochemical industry and mines, especially chemical factories causing pollution in water bodies. Rivers and oceans are contaminated on a large scale with these toxic compounds. In the past, physicochemical method was used for the elimination of phenol and its compounds, but today, bioremediation is preferable.

8p trinhthamhodang4 22-03-2020 27 2   Download