Новые Правила Ввоза На Территорию Таможенного Союза Органических Химических Соединений (Группа 29) [New Regulations for Importation of Organic Chemical Compounds (Group 29) into the Territory of the Customs Union]

2010 ◽  
Author(s):  
Teymur Zulfugarzade
Keyword(s):  
Chemical Compounds ◽  
Organic Chemical ◽  
Customs Union

scholarly journals Changes in Chemical Composition of Soluble Organic Chemical Compounds during Litters Decomposition into Tropical Forest of <i>Milletia laurentii</i> De Wild

2019 ◽  
Vol 09 (01) ◽  
pp. 70-87
Author(s):  
Gouolaly Tsiba ◽  
Mavoungou Naïving Flovique Rosère ◽  
Edzonga Josianne ◽  
Milandou Matoko Jodhry Préféré ◽  
Malonga Urielle Marini ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Tropical Forest ◽  
Chemical Compounds ◽  
Organic Chemical

scholarly journals Simulating the dispersion of poisonous organic chemical compounds in wastewater treatment process through the active sludge method using the TOXChem model

2021 ◽  
Vol 5 (1) ◽  
pp. 025-031
Author(s):  
Masoomi Seyyed Roohollah ◽  
Azizi Mostafa ◽  
Aghlmand Reza ◽  
Gheibi Mohammad ◽  
Kian Zahra
Keyword(s):  
Heavy Metals ◽  
Wastewater Treatment ◽  
Chemical Structure ◽  
Treatment Process ◽  
Treatment Plant ◽  
Chemical Compounds ◽  
Organic Chemical ◽  
Gaseous Pollutants ◽  
Active Sludge ◽  
Wastewater Treatment Process

Naturally, microorganisms decompose the organic material existing in nature, both in the presence or absence of oxygen. The majority of materials such as poisonous chemical compounds, heavy metals, would prevent the treatment process from taking place, lead to the entry of these contaminants into the environment results in the emergence of numerous diseases. In the present study, using the TOXChem4.1 simulation model, attempts were made to simulate a wastewater treatment plant and then assess the dispersions of contaminants including 1,2-Dimethylnaphthalene, 1,3-Dinitropyrene, 1,6-Dimethylnaphthalene, 1,6-Dinitropyrene, and 17a-ethinylestradiol (EE2) in concentrations of a common scenario. The results of computer simulations showed that the EE2 contaminant is of the highest percentage of decomposition among others, due to its wider chemical structure. Consequently, it is clear that such contaminant is of the highest mass in the sludge exiting the treatment plant. In addition, the results of the simulations demonstrated that the highest volumes of gaseous pollutants take place in the modulation and initial sedimentation units.

scholarly journals Analisis Kualitas Air Sungai Hasil Penyaringan Filter Berbasis Arang Sekam

SIMETRIS ◽  
2020 ◽  
Vol 14 (2) ◽  
pp. 20-25
Author(s):  
Hartono Guntur Ristiyanto
Keyword(s):  
Rice Husk ◽  
Government Regulation ◽  
Chemical Compounds ◽  
Filter Material ◽  
Organic Chemical ◽  
Physical Parameters ◽  
Chemical Parameters ◽  
Water Filter ◽  
Inorganic Chemical ◽  
Filter Layer

Industrial waste pollution from the upstream of the Bengawan Solo river, makes the river's quality unfit for various purposes. Water filtering needs to be done first to improve its quality. One of them is the absorption process. One of the adsorbents that have good prospects is rice husk waste because of its ability to bind the adsorbate components. Study related to the effectiveness of rice husk charcoal as a water filter material need to be carried out before it can be used as a water filter material. Making appropriate filter technology needs to be done to apply it. The results of the analysis show that the filter can improve the physical parameters of water, namely reducing the residue by 25% on average. Meanwhile, from inorganic chemical parameters, only DO (Dissolved Oxygen) elements have decreased in quality standards. The organic chemical parameters, namely the phenol content are relatively constant, this indicates that rice husk charcoal is not effective in binding phenols. Based on Government Regulation No. 82 of 2001, the filtered water is classified as Class I. However, in its use, other parameters that have not been studied should be studied, namely microbiology, other organic chemistry, radioactivity, etc.The technological capacity needs to be increased by the use of a larger body and or a reduction in the thickness of the filter layer. Meanwhile, the manufacture of rice husk charcoal should use controlled combustion mechanisms and or husk charcoal activation with the chemical Na OH to strengthen the properties of the husk charcoal adsorbent against harmful chemical compounds.

Innovative biocomposite development based on the incorporation of Salvadora persica in acrylic resin for dental material

2020 ◽  
pp. 089270572093916
Author(s):  
Rihem Chaaben ◽  
Rym Taktak ◽  
Basma Mnif ◽  
Noamen Guermazi ◽  
Khaled Elleuch
Keyword(s):  
Material Characterization ◽  
High Performance ◽  
Antioxidant Activities ◽  
Biological Activities ◽  
Chemical Compounds ◽  
Dental Restoration ◽  
Dental Material ◽  
Organic Chemical ◽  
Salvadora Persica ◽  
Scanning Calorimetry

A novel biocomposite with poly(methyl methacrylate) as resin containing Salvadora persica powders was elaborated. In this study, for the first time, S. persica was used to enhance the bioactive performance of dental restoration materials. Material characterization was carried out both on bare materials and on the elaborated biocomposite (30 wt% of S. persica). X-ray diffraction, Fourier transform infrared spectroscopy, differential scanning calorimetry, and high-performance liquid chromatography techniques were conducted to perform material characterization. The obtained results linked to dental material showed the presence of the organic chemical compounds of S. persica, which are responsible for biological activities, and the presence of mineral chemical compounds of S. persica, which are useful for dental applications and health. They also revealed the absence of toxic residual monomers. In addition, they proved the antioxidant activities proof of elaborated composite related to total polyphenol flavonoid content. Finally, they exhibited the antibacterial activity of S. persica and the composite.

QSAR by Minimal Topological Difference[s]: Post-Modern Perspectives

2020 ◽  
Vol 27 (1) ◽  
pp. 42-53 ◽  
Author(s):  
Corina Duda-Seiman ◽  
Daniel Duda-Seiman ◽  
Dan Ciubotariu ◽  
Mihai V. Putz
Keyword(s):  
Molecular Design ◽  
Three Dimensional ◽  
Chemical Compounds ◽  
Quantitative Structure Activity Relationship ◽  
Organic Chemical ◽  
Biological Interaction ◽  
Structure Activity ◽  
Receptor Sites ◽  
Key Features ◽  
Quantitative Treatment

In the context of reconsidering the Quantitative Structure-Activity Relationship (QSAR) methods at the economical level, namely the optimization rules of OECD, the present review unfolds the key features of Minimal Sterical, Monte-Carlo and Minimal Topological Difference (MTD) methods, developed for quantitative treatment of the relations between biological activity of organic chemical compounds (drugs, pesticides, and so on) and their structures. The initial Minimal Steric Difference (MSD) is completed by the three-dimensional variant of the MTD method, being the last one referred to here, while the main principles of validating and guiding a viable QSAR method verified by the analytical-automated MTD, thus enlarging the perspectives of understanding the chemical-biological interaction at the level of ligand-receptor sites, cavity, and walls, with a true service to the future adaptive molecular design.

scholarly journals Identification on chemical organic compounds of Macaranga hypoleuca by using Py-GCMS

2021 ◽  
Vol 914 (1) ◽  
pp. 012065
Author(s):  
Gusmailina ◽  
N A Saputra
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Organic Compounds ◽  
Secondary Forest ◽  
Chemical Compounds ◽  
Stem Bark ◽  
Gas Chromatography Mass Spectrometry ◽  
Organic Chemical ◽  
Pentanoic Acid ◽  
Bioactive Potential

Abstract Organic chemical compounds of Macaranga spp. have been identified and their bioactive potential have been explored, but Macaranga hypoleuca information was limited. M. hypoleuca includes fast growing and pioneer’s species in secondary forest successions. Limited utilization of M. hypoleuca make this species classified into less well-known species. Present study was conducted to identify the chemical compounds of M. hypoleuca by using Pyrolysis Gas Chromatography-Mass Spectrometry (Py-GCMS QP2010). Samples were originated from stem, bark, sap and leaves of M. hypoleuca. This study was able to identify the compounds of dibromo chloropropane, methoxy 2-propenal, ammonium carbamate, levoglucosan, teraxeron, n-tetra terakseron, hydroxy-2-propenal, carbinol and pentanoic acid as the dominant organic compounds in M. hypoleuca. Further research is needed to isolate and biological activity.

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