Toxic organics

The main objectives of the study include: i) Assessment of PAHs concentration in dust emitted from chimneys of SSI; ii) Assessment of ratio and composition of PAHs in dust samples; iii) Research on load and emission factor of PAHs from SSI.

11p vibecca 01-10-2024 6 2   Download

The pH solution is one of the critical factors affecting the photo-Fenton degradation of dyes in wastewater. This study has shown the role and potential of the application of photocatalysts in the degradation of toxic organic compounds the wastewater.

5p vikwong 29-09-2024 3 1   Download

It can be seen that the objects of wastewater that need to be treated are quite diverse in types and complex in terms of reaction mechanisms. The methods mainly focus on the treatment of toxic organic compounds, especially phenols or plant protection agents in industrial wastewater, paper industry, food production, textile industry, printing industry.

6p vikwong 29-09-2024 4 0   Download

Microplastics present in high density in coastal marine environments have been reported by many published works worldwide. Microplastic presence poses a major threat to all organisms that come into direct contact with them in the aquatic environment because they are non-biodegradable and adsorbable to some toxic substances.

8p vikwong 29-09-2024 2 1   Download

The high durability, re-collectable and low-cost materials with tertiary (reduced graphene-TiO2-Fe3O4, denoted as GrTiFe) components for degradation of toxic organic compounds have been prepared from different precursors by coprecipitation and hydrothermal methods.

5p vikwong 29-09-2024 2 1   Download

The materials were then characterized by SEM, BET, AFM and XRD. The produced material was used to remove methylene blue (MB) from aqueous solution by batch adsorption. Results showed that the bentonite nanoplatelets gave high adsorption ability with Langmuir maximum adsorption capacity of 312.50 mg/g, which could be a good adsorbent for removing dyes and other toxic organics in wastewater.

5p vikwong 29-09-2024 3 1   Download

In this study, the combination of Fe(III) and Ni(II), Cu(II), or Mn(II) metal salts bound to organic bridges were synthesized based on thermal method solvent in the presence of DMF. The structural properties of the materials were analyzed based on modern physicochemical methods (XRD, FT-IR, SEM, and BET).

8p vidoctorstrange 06-05-2023 9 3   Download

The objectives of the dissertation: The objective of the dissertation is to determine the residue of pesticides OCPs in water, sediments, aquatic organisms at the estuary of the Saigon – Dong Nai and to evaluate the toxicity of the pesticides DDTs on the embryos and larvae of the Pacific oysters (Crassostrea Gigas), Fish Medaka (Oryzias latipes).

27p extraenglish 24-05-2021 14 4   Download

The objective of the dissertation is to determine the residue of pesticides OCPs in water, sediments, aquatic organisms at the estuary of the Saigon – Dong Nai and to evaluate the toxicity of the pesticides DDTs on the embryos and larvae of the Pacific oysters (Crassostrea Gigas), Fish Medaka (Oryzias latipes).

27p capheviahe27 23-02-2021 17 4   Download

Develop the process of producing crude extracts, fractions and pure chemical compounds isolated from E. fortunei; tudy of inhibitory effect of the crude ethanol extracts from E. fortunei on the growth of M.aeruginosa and evaluating their ecological safety to non-target aquatic organisms.

28p larachdumlanat129 20-01-2021 28 3   Download

Copper and zinc are also toxic to humans when high levels are ingested and an excess of copper and zinc interferes with plant growth. It is important to monitor copper and zinc content in soil to avoid marketing food products which contain dangerous amounts of these heavy metals. This article presents the results of a study done to determine the copper and zinc content of soil and four agricultural products grown in Tan Lap Co-operative, Dan Phuong District, Hanoi.

6p tamynhan8 04-11-2020 20 2   Download

Cisplatin (CP) is considered one of the most effective and widely used anti-neoplastic drug in the treatment of different solid organ tumors. The present study was carried out to assess the hematological changes following CP administration in Wistar albino rats and its amelioration by extract of Andrographis paniculata (AP). The study included 60 Wistar albino rats were divided into 12 rats in each group. Group I served as normal control group.

8p angicungduoc6 22-07-2020 8 1   Download

The thesis has found a new method to increase the pore size of mesoporous carbon by filling the liquid glass into the pore of the template (silica SBA-15) before impregnating the carbon presource to limit the penetration of carbon sealed the pore system of SBA-15. Stability of mesoporous carbon is increases due to silicon are partially retained in materials. This technique opens the way of synthesis of mesoporous carbon as an adsorbent with a desired pore size and stability.

28p xacxuoc4321 08-07-2019 41 7   Download

Porous metal organic framework nanoscale carriers as a potential platform for drug delivery and imaging, In the domain of health, one important challenge is the efficient delivery of drugs in the body using non-toxic nanocarriers. Most of the existing carrier materials show poor drug loading and or rapid release of the proportion of the drug that is simply adsorbed at the external surface of the nanocarrier.

7p hotrotaitailieu 30-03-2016 74 1   Download

Oceans provide enormous and diverse space for marine life. Invertebrates are conspicuous inhabitants in certain zones such as the intertidal; many are soft- bodied, relatively immobile and lack obvious physical defenses. These animals frequently have evolved chemical defenses against predators and overgrowth by fouling organisms. Marine animals may accumulate and use a variety of toxins from prey organisms and from symbiotic microorganisms for their own purposes. Thus, toxic animals are particularly abundant in the oceans.

23p uocvong01 24-09-2015 64 7   Download

Diseases transmitted by hematophagous (blood-feeding) insects are responsible for millions of human deaths world-wide. Inhematophagous insects, thebloodmeal is important for regulating egg maturation. Although a high concentra-tion of iron is toxic for most organisms, hematophagous insects seemunaffectedby the iron load inabloodmeal.One means by which hematophagous insects handle this iron load is, perhaps, by the expression of iron-binding proteins, specifically the iron storage protein ferritin....

8p tumor12 20-04-2013 45 3   Download

Puroindoline-a (PIN-a) anda1-purothionin (a1-PTH), isolated from wheat endosperm ofTriticum aestivumsp., have been suggested to play a role in plant defence mechanisms against phytopathogenic organisms. We investi-gated their ability to form pores when incorporated into giant liposomes using the patch-clamp technique.

13p inspiron33 26-03-2013 55 4   Download

Human manganese superoxide dismutase is a mitochondrial metalloenzyme that is involved in protecting aerobic organisms against superoxide toxicity, and has been implicated in slowing tumor growth. Unfortunately, this enzyme exhibits strong product inhibition, which limits its potential bio-medical applications.

9p inspiron33 23-03-2013 42 3   Download

Synthetic organic selenium compounds such as 2-phenyl-1,2-benziso-selenazol-3(2H)-one may show glutathione peroxidase-like antioxidant activity. Recently, we synthesized new organic selenium compounds that are thought to be effective antioxidants.

9p media19 05-03-2013 45 4   Download

A key limitation of whole-cell redox biocatalysis for the production of valuable, specifically functionalized products is substrate⁄product toxicity, which can potentially be overcome by using solvent-tolerant micro-organ-isms.

12p vinaphone15 28-02-2013 46 3   Download