2024-03-28T18:13:39Z
https://www.ajchem-b.com/?_action=export&rf=summon&issue=15138
Advanced Journal of Chemistry, Section B: Natural Products and Medical Chemistry
Adv. J. Chem. Sect. B. Nat. Prod. Med. Chem.
2020
2
3
Investigation of Predictive Methods of Gas Hydrate Formation in Natural Gas Transmission Pipelines
Alireza
Bozorgian
Natural gas hydrate is a solid crystalline compound formed from the composition of water and gas and is part of the clathrate family. Gas hydrate can be formed by pure gas or a gas mixture consisting of two or more components. Gas hydrates are recognized as non-stoichiometric solids. One of the methods or methods that has been most successful in predicting or recognizing hydrate phases in hydrocarbon equilibrium is based on the relative Kvs size of the vapor-solid equilibrium constant. Tables of equilibrium for species or constituents of hydrates known as normal butane are listed in various articles and books. With the discovery of the heaviest constituents of hydrates, their equilibrium constants need to be more accurately predicted in the un-hydrated phase of the hydrocarbon mixtures, especially in the reservoir fluids.
Gas Hydrate
Inhibitor
Gas Transmission Pipelines
ICE
2020
08
01
91
101
https://www.ajchem-b.com/article_107809_38da762412befacedbe3b0213557f847.pdf
Advanced Journal of Chemistry, Section B: Natural Products and Medical Chemistry
Adv. J. Chem. Sect. B. Nat. Prod. Med. Chem.
2020
2
3
A Review on Biomimetic Synthesis of Ag2O Nanoparticles using Plant Extract, Characterization and its Recent Applications
Suresh
Ghotekar
Harshal
Dabhane
Shreyas
Pansambal
Rajeshwari
Oza
PAWAN
TAMBADE
Vijay
Medhane
Nanotechnology is a swiftly growing field due to its huge range of uses in various branches of science and technology. Divergent types of routes are employed for the production of nanoparticles (NPs) because of their broad applications. The conventional physical and chemical approaches have certain constraints with them either in the form of chemical contaminations during their syntheses methodology or use of higher amount of energy. During the last one or two decades research have been concentrated on creating facile, safe, non-noxious, affordable and eco-accommodating procedures for synthesis of NPs. In order to get this purpose, green synthesis approaches have been improved in order to fill this lacuna. The biogenic synthesis of NPs is facile, one pot, eco-benevolent, sustainable and a green methodology. The different biological specimens like plant tissues, yeast, bacteria, fungi, etc. are used for green synthesis for metal oxide NPs. In this review, we summed up recent literature on biomimetic synthesis of silver oxide (Ag2O) NPs which have revolutionized method of fabrication for their stupendous applications in various sectors. Due to biocompatibility of Ag2O NPs, it has found its efficacious applications in biomedical field. The characterization techniques and mechanism of green synthesis of Ag2O NPs along with diverse applications have also been investigated.
Ag2O NPs
applications
Green Nanotechnology
Mechanism
Plant extracts
2020
08
01
102
111
https://www.ajchem-b.com/article_107810_f9c8ab4745e701c281c6fa895806c42a.pdf
Advanced Journal of Chemistry, Section B: Natural Products and Medical Chemistry
Adv. J. Chem. Sect. B. Nat. Prod. Med. Chem.
2020
2
3
Review of the Effects of SAGO Consumption on Oxidative Stress Exercise
Azwan
Morni
Exercise in hot and humid conditions cause remarkable physiologic challenges for endurance athletes. The aim of the current study was to investigate the effects of carbohydrate consumption during endurance cycling performance on F2–Isoprostanes as an oxidative stress biomarker. Sago flour is a commercial starch source that is frequently used in tropical countries, like Malaysia, as carbohydrate ingestion. The consumptions of sago have been shown to improve endurance performance. Twelve well–trained male cyclists (age: 19.0±5.6 years, body weight: 60.1±11.2 kg, height: 170.8±7.6 cm, and VO2max: 56.5±6.5 mL.kg-1.min-1) pedaled at 60% of VO2max for 1.5 hours followed by a 20–km cycling time trial in the heat (31°C; 70% relative humidity). From the start of the cycling and at 20– minute intervals during 1.5 hours cycling participants ingested 200 mL of 7.5% of the sago supplement. There was a significant reduction of plasma F2–Isoprostanes concentrations after endurance cycling as compared to the baseline levels. This study has shown that sago supplementation was able to lower the oxidative stress in the recovery after endurance cycling performance in the heat.
oxidative stress
Sago
20–km Cycling Time Trial
F2-Isoprostane
Heat
2020
08
01
112
119
https://www.ajchem-b.com/article_109308_0f04c49b4ba1ca54a26c3d0b67649a58.pdf
Advanced Journal of Chemistry, Section B: Natural Products and Medical Chemistry
Adv. J. Chem. Sect. B. Nat. Prod. Med. Chem.
2020
2
3
A Review on Green Synthesis of Sulfur Nanoparticles via Plant Extract, Characterization and its Applications
Suresh
Ghotekar
Trupti
Pagar
Shreyas
Pansambal
Rajeshwari
Oza
Among diverse non-metal nanoparticles (NPs), sulfur nanoparticles (SNPs) are one of the most significant and intriguing nanomaterials. An important concern about the synthesis of SNPs is the formation of hazardous wastes, noxious by-products and ruinous pollutants. The best solution to mitigate and/or exclude these noxious substances are plant mediated biosynthesis of SNPs. Eco-benevolent SNPs from plant extracts have been identified as precious nanomaterial in various agricultural, biomedical and catalytic applications including lithium-sulfur batteries, pesticides, fungicides, carbon nanotube modification, gas sensor and neutron capture in cancer therapy because of their splendid performance and selectivity. They have captured the consideration of researchers owing to their sustainable, economical, non-noxious, convenient, green and eco-benevolent nature. This review attempts to cover the recent advancements in the biosynthesis, characterization techniques and applications of biogenic SNPs in environmental and biomedical systems. Furthermore, the stability of biosynthesized SNPs and mechanism of their formation are briefly discussed.
applications
Green Nanotechnology
Mechanism
Plant extracts
Sulfur nanoparticles
2020
08
01
128
143
https://www.ajchem-b.com/article_109501_7e009869e5f7ce3752478c818c8bd246.pdf
Advanced Journal of Chemistry, Section B: Natural Products and Medical Chemistry
Adv. J. Chem. Sect. B. Nat. Prod. Med. Chem.
2020
2
3
The Impact of Effective Risk Management on Corporate Financial Performance
Mojtaba
Karami
Amir
Samimi
Mahsa
Jafari
This Present study examines the corporate financial performance and risk management in oil and gas companies. Basically, the importance and qualitative method of any research can be examined from two basic and applied aspects. In general, no comprehensive research has been conducted, regardless of the limited number of articles and sources that have occasionally examined and referred to the subject, as well as studies conducted at the theoretical level. Risk management is essentially the process of identifying, analyzing and accepting or reducing uncertainty in investment decisions. In terms of risk management in all financial markets, there are people who are always right and well-planned, both in terms of analysis and investment. In today's modern world, the importance of monetary and financial science is not hidden from anyone. In the meantime, the discussion of proper financial reporting and its various methods have particular importance due to the analysis of the next steps of investors. The most important type of financial information is information about companies and their performance.
Business Activities
Financial Markets
Investment
Process
Risk Management
2020
08
01
144
150
https://www.ajchem-b.com/article_109686_995f22e1118084dd74a17074ca90e4bb.pdf
Advanced Journal of Chemistry, Section B: Natural Products and Medical Chemistry
Adv. J. Chem. Sect. B. Nat. Prod. Med. Chem.
2020
2
3
The necessity of risk management evaluations in petrochemical industries
Mojtaba
Karami
Amir
Samimi
Mahsa
Jafari
The study looked at the need to manage risk in the petrochemical industry due to the horrific events of recent accidents such as India's Bhopal (with 4,000 killed), Ukraine's Chernobyl (with 38 killed), Flixborough, England (With 28 people killed) and Italy's Seveso (with a gas mass released from the blast 6 km long and 1 km wide) (Flixborough Vapor Cloud Explosion). Recent events have drawn public attention to the chemical industry and various risks involved in the petrochemical industry, and then as a result have increased the need for systematic safety analysis of various processes in the chemical industry. According to the International Labor Organization, 5,000 people die every day in the world due to accidents and work-related illnesses and 4% of the world's GDP per year, or 51.53, 1.3 and 2 percent, respectively. Millions of US dollars are spent on direct and indirect costs of work-related illnesses and accidents, which is 20 times more than the total international aid for development of third world countries
Accidents Chemical Industries
Cost
Petrochemical
Risk Management
2020
08
01
151
158
https://www.ajchem-b.com/article_109731_f8464b53d98b96bf112583612d4d2ad6.pdf
Advanced Journal of Chemistry, Section B: Natural Products and Medical Chemistry
Adv. J. Chem. Sect. B. Nat. Prod. Med. Chem.
2020
2
3
Synthesis of monodisperse magnetic hydroxyapatite/Fe3O4 nanospheres for removal of Brilliant Green (BG) and Coomassie Brilliant Blue (CBB) in the single and binary systems
Zeinab
Rezayati Zad
Bahare
Moosavi
Alireza
Taheri
Conventional wastewater treatments such as chemical coagulation, activated sludge, trickling filter, carbon adsorption and photo-degradation were used for the removal of dyes. The characteristics of (HAp /Fe3O4) were investigated using Fourier transform infrared (FTIR) and scanning electron microscope (SEM). The surface area was measured by the Brunauer–Emmett–Teller (BET) nitrogen adsorption apparatus. The crystal phases of the products were characterized by X-ray diffraction with monochromatic Cu Ka radiation. Selectivity analysis for binary system dye removal was investigated. The effect of operational parameter (adsorbent dosage, dye concentration and salt) on dye removal was evaluated in details. UV–vis spectrophotometer was employed for absorbance measurements of samples. The maximum wavelength used for determination of residual concentration of CBB and BG in supernatant solution using UV–vis spectrophotometer were 627 nm, 629 nm, respectively. The effect of adsorbent dosage on dye removal from single (sin.) and binary (bin.) systems was investigated by contacting 10 mL of dye solution with initial dye concentration of 5 mg/L at single (sin.) and binary (bin.). In this paper, monodisperse magnetic HAp (HAp/Fe3O4) microspheres was synthesized and used for the remove dye from single (sin.) and binary (bin.) systems.
Coomassie Brilliant Blue (CBB)
Brilliant green(BG)
Binary system
mono dispersive magnetic hydroxylapatite
Removal
2020
08
01
159
171
https://www.ajchem-b.com/article_109873_141026fc68a7cc4e0a14aba8e6af9354.pdf