Volume-16 ~ Issue-10 ~ October 2023

Abstract: Justification: Continental aquatic ecosystems and marine ecosystems are being extensively altered in their structure by anthropogenic impacts, producing substantial changes in land use, air pollution, with impacts on surface and underground water resources. These impacts are global, regional, and local and range from climate changes and climate variations to the deforestation of ciliary forests, changes in river flow and the introduction of exotic species. Objective: assessment of anthropogenic impacts of Carananduba Beach on the Pará River and Cajueiro River in the Metropolitan.......

Key words: Environmental chemistry, Water analysis, Limnology, Hydrographic basin

[1]. SANTOS, Anderson Medeiros Dos, ESTEVES, Francisco De Assis. Propriedades Físicas E Químicas Da Água E Sua Importância Limnológica In: ESTEVES, Francisco De Assis. Fundamentos De Limnologia. 3 Ed. Interciência : Rio De Janeiro, 2011.P.125-133.
[2]. TUNDISI, José Galizia, TUNDISI Takako Matsumura, Limnologia. Oficina De Textos, 2008.
[3]. GUEDES, Aureliano Da Silva, GUEDES II, Aureliano Da Silva, GUEDES, Catarynna Maciel. Meio Ambiente E Limnologia. 4 Ed. Belém-Pará (Brazil) : Editora Dos Autores, 2023.
[4]. GUEDES, Aureliano Da Silva. Impactos Ambientais Da Urbanização Aos Recursos Hídricos Da Região Metropolitana De Belém E Seus Reflexos Na Saúde Das Populações Locais E Meio Ambiente: Um Breve Olhar Da Geomedicina. Ananideua – PA (Brazil) : Universidade Federal Do Pará/Campus De Ananideua, 2023.
[5]. GUEDES, Aureliano Da Silva. Roteiro De Viagem De Pesquisa, Impactos Antrópicos Da Região Metropolitana De Belém. UFPA / Campus Universitário De Ananindeua: Ananindeua, 2023.

Abstract: Background: The Market occupants, especially traders, are at high risk of being exposed to pollutants in the ambient air of the market environment, one of which is exposure to PM2.5. The purpose of this study was to determine the level of health risk due to PM2.5 exposure to traders in Duri, Indonesia Materials and Methods: This study uses environmental health risk analysis (EHRA) method that aims to calculate the level of risk received by a population due to environmental exposure. The number of sample were 67 respondents. The sampling technique used was accidental sampling. PM2.5 concentration measurements by CE (Conformite.......

Key words: pm2.5, exposure, health risk assessment

[1]. Who. Ambient Air Pollution: A Global Assessment Of Exposure And Burden Of Disease. Geneva, Switzerland; 2016.
[2]. Han X, Naeher Lp. A Review Of Traffic-Related Air Pollution Exposure Assessment Studies In The Developing World. Environ Int. 2006 Jan;32(1):106–20.
[3]. President Of The Republic Of Indonesia. Republic Of Indonesia Government Regulation Number 22 Of 2021 Concerning Implementation Of Environmental Protection And Management. Jakarta. 2021.
[4]. Putra Dharossa D. Analysis Of Environmental Health Risks Due To Exposure To Metals In Pm2.5 Of Students And Teachers At Schools In Unand Block D Ulu Gadut Housing, Padang City. Universitas Andalas; 2020.
[5]. Joseph Philip R. Designing A Social Campaign To Reduce The Risks Due To Pm 2.5 Air Pollution. Universitas Multimedia Nusantara; 2019..

Abstract: The reaction of 1-((1H-imidazol-4-yl)methylene)thiosemicarbazide (HL) with NiCl2.6H2O in 2:1 ratio has yielded a mononuclear formulated as [Ni(HL)2].2Cl. The structure of the complex was solved by single crystal X–ray crystallography. The asymmetric unit of the mononuclear complex is composed by one Ni2+ ion, two neutral molecules of ligand and two chloride anions. Each ligand molecule acts in tridentate fashion yielding a hexacoordinated Ni(II) ion with an environment best described.......

Key words: Schiff base, crystal, complex, copper, octahedral, mononuclear

[1]. Alam, M., Abser, M. N., Kumer, A., Bhuiyan, M. M. H., Akter, P., Hossain, M. E., Chakma, U. (2023). Synthesis, Characterization, Antibacterial Activity Of Thiosemicarbazones Derivatives And Their Computational Approaches: Quantum Calculation, Molecular Docking, Molecular Dynamic, ADMET, QSAR. Heliyon, 9(6), E16222.
Https://Doi.Org/10.1016/J.Heliyon.2023.E16222
[2]. Santos, T. A. R. Dos, Silva, A. C. Da, Silva, E. B., Gomes, P. A. T. De M., Espíndola, J. W. P., Cardoso, M. V. De O., Moreira, D. R. M., Leite, A. C. L., Pereira, V. R. A. (2016). Antitumor And Immunomodulatory Activities Of Thiosemicarbazones And 1,3-Thiazoles In Jurkat And HT-29 Cells. Biomedicine Pharmacotherapy, 82, 555–560.
Https://Doi.Org/10.1016/J.Biopha.2016.05.038
[3]. Chellan, P., Land, K. M., Shokar, A., Au, A., An, S. H., Clavel, C. M., Dyson, P. J., De Kock, C., Smith, P. J., Chibale, K., Smith, G. S. (2012). Exploring The Versatility Of Cycloplatinated Thiosemicarbazones As Antitumor And Antiparasitic Agents. Organometallics, 31(16), 5791–5799.
Https://Doi.Org/10.1021/Om300334z
[4]. Kaushik, S., Paliwal, S. K., Iyer, M. R., Patil, V. M. (2023). Promising Schiff Bases In Antiviral Drug Design And Discovery. Medicinal Chemistry Research, 32(6), 1063–1076.
Https://Doi.Org/10.1007/S00044-023-03068-0
[5]. Combination Of N‐Methylisatin‐Β‐Thiosemicarbazone Derivative (SCH16) With Ribavirin And Mycophenolic Acid Potentiates The Antiviral Activity Of SCH16 Against Japanese Encephalitis Virus In Vitro. (2012). Sebastian, L., Desai, A., Yogeeswari, P., Sriram, D., Madhusudana, S.N., Ravi, V. Letters In Applied Microbiology, 55(3), 234–239.
Https://Doi.Org/10.1111/J.1472-765X.2012.03282.X.

Abstract: The poly (ethylene glycols) (PEG) was esterified with lauric acid or myristic acid, and their biological activities were improved by blending them with Sr0.25Co0.75Fe2O4 nanoparticles. The Sr0.25Co0.75Fe2O4 nanoparticles were prepared by the chemical co-precipitation method. These prepared polymeric surfactants were investigated using Fourier transform infrared spectroscopy (FT-IR), Transmission Electron Microscope (TEM) and diffraction of X-ray (XRD). Also, the surface tension was characterized at diverse temperatures for these compounds. In addition,.......

Keywords: Esterification; Biological Activities; Surface properties; Sr0.25Co0.75Fe2O4 nanoparticles

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[4]. Abdeen Z. Adsorption Efficiency Of Poly(Ethylene Glycol)/Chitosan/CNT Blends For Maltene Fraction Separation. Environ Sci PollutRes. 2016; 23:11240–11246. Https://Doi.Org/10.1007/S11356-016-6225-0
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Https://Doi.Org/10.1016/J.Molliq.2019.111010

Abstract: The synergy between porous silicon (PSi) and silver (Ag) nanomaterials has garnered significant attention in various scientific domains due to their unique properties and potential applications. This article presents an in-depth investigation into the utilization of Scanning Electron Microscopy (SEM) to study porous silicon modified with silver nanoparticles. It explores the underlying principles, specialized sample preparation, advanced imaging parameters, applications, and the remarkable significance of such research. Key references in the field are cited to facilitate further exploration in this promising area of study.

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Abstract: This academic article delves into the intricate realm of time-resolved optical investigations of semiconductor nano-plasmonic materials. We provide a comprehensive overview of the pump-probe technique and time-resolved methodologies, highlighting their application in understanding the dynamic behavior of these materials. Through an exploration of key research findings and relevant references, this article seeks to elucidate the advancements and challenges within this field, with a specific focus on the optical properties that are probed..

[1]. Zhang, H., Ma, L., Shalaev, V. M., et al. (2018). Ultrafast Carrier Dynamics in Plasmonic Nanoparticles. ACS Photonics, 5(3), 728-738.
[2]. Liu, X., Atwater, M., Wang, J., et al. (2019). Plasmonics-Enhanced Energy Transfer in Plasmonic-Semiconductor Hybrid Structures. Nano Letters, 19(5), 2921-2928..

Abstract: Selected drink samples were purchased from local markets and analyzed for the levels of potassium sorbate and sugar using UV – Vis spectroscopy. Samples were chosen to cover the popular and easily available drinks. The samples collected include Monster Energy Drink, Lacasera Bold Drink, Berry Blast Drink, and Coca-Cola Drink
The results obtained a potassium sorbate range of 6.67 ± 2.36 to 16.67 ± 0 with Berryblast drink giving the highest concentration with a value of 16.67 ± 0 and Monster energy drink giving the least concentration with a value of 6.67 ± 2.36.........

[1]. Chemical Book (2020): Potassium Sorbate, Available At: Https://M.Chemicalbook.Com/Chemicalproductproperty_EN_CB3294185.Htm (Accessed: 6th February 2021).
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Abstract: Research has been carried out on the cracking of methyl oleate (methyl 9-octadecenoate) compounds into 1-octadecanol compounds with Ni/zeolite catalysts and fixed bed reactors at temperatures of 400 oC to 500 oC. First, the conversion of methyl oleate to methyl octadecanoate was carried out, then the conversion was carried out to 1-octadecanol. The preparation of methyl octadecanoate is by reacting methanol with NaOH to produce a methoxide compound, then the methoxide compound is reacted with methyl oleate to produce methyl 9-octadecanoate. Furthermore, methyl 9-octadenoate was converted to 1-octadecanol compound with a fixed bed reactor and Ni/zeolite catalyst.......

Keywords : methyl oleate, 1-octadecanol, Ni/zeolite, Fixed bed reactor

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