Kinetic studies of the removal of methylene blue from aqueous solution by biochar derived from jackfruit peel.

Kinetic studies play an instrumental role in determining the most appropriate reaction rate model for industrial-scale applications. This study focuses on the kinetics of methylene blue (MB) adsorption from aqueous solutions by biochar derived from jackfruit peel. Various kinetic models, including pseudo-first-order (PFO), pseudo-second-order (PSO), intra-diffusion, and Elovich models, were applied to study MB adsorption kinetics of jackfruit peel biochar.

Type 2 diabetes and hypertension in Vietnam: a systematic review and meta-analysis of studies between 2000 and 2020.

Objectives: The objective of this study was to determine the level of type 2 diabetes (T2DM) and hypertension (HTN) in Vietnam and to assess the trend and recommend the future direction of prevention research efforts.

Design: We searched scientific literature, databases including PubMed, EMBASE, CINHAL and Google Scholar; grey literature and reference lists for primary research published, nation database websites between 1 January 2000 and 30 September 2020. We adapted the modified Newcastle Ottawa Scale for assessing the quality of the study, as recommended by the Cochrane Collaboration.

Correction to "Simple Two-step Procedure for the Synthesis of Memantine Hydrochloride from 1,3-Dimethyl-adamantane".

[This corrects the article DOI: 10.1021/acsomega.0c01589.

Simple Two-step Procedure for the Synthesis of Memantine Hydrochloride from 1,3-Dimethyl-adamantane.

Memantine hydrochloride is a medicine used for the treatment of Alzheimer's disease. A number of methods for the preparation of memantine hydrochloride have been reported. These procedures started from 1,3-dimethyl-adamantane by as many as using three or four reaction steps to produce memantine hydrochloride with overall yields ranging from 54 to 77%.

Synthesis and Bioactivity of Thiosemicarbazones Containing Adamantane Skeletons.

Reaction of 4-(1-adamantyl)-3-thiosemicarbazide () with numerous substituted acetophenones and benzaldehydes yielded the corresponding thiosemicarbazones containing adamantane skeletons. The synthesized compounds were evaluated for their in vitro activities against some Gram-positive and Gram-negative bacteria, and the fungus , and cytotoxicity against four cancer cell lines (Hep3B, HeLa, A549, and MCF-7). All of them showed good antifungal activity against .

Synthesis and Bioactivity of Hydrazide-Hydrazones with the 1-Adamantyl-Carbonyl Moiety.

Reaction of 1-adamantyl carbohydrazide () with various substituted benzaldehydes and acetophenones yielded the corresponding hydrazide-hydrazones with a 1-adamantane carbonyl moiety. The new synthesized compounds were tested for activities against some Gram-negative and Gram-positive bacteria, and the fungus . Compounds , , , and displayed potential antibacterial activity against tested Gram-positive bacteria and , while compounds and possessed cytotoxicity against tested human cancer cell lines.

Improved Corrosion Resistance of Steel in Ethanol Fuel Blend by Titania Nanoparticles and Leaf Extract.

A porous and low-density protective film on a steel surface in the corrosive environment can undergo deterioration even in the presence of organic inhibitors due to infiltration of aggressive ions into the pinholes and/or pores. This phenomenon is related to the localized corrosion that takes place even in the presence of an optimal concentration of organic corrosion inhibitors in the given medium. To overcome this issue, we have designed an organic protective film on a steel surface with the help of titania nanoparticles (TNPs) combined with an organic corrosion inhibitor derived from leaf extract (APLE), all to be studied in a simulated ethanol fuel blend (SEFB).

A Study on Corrosion Inhibitor for Mild Steel in Ethanol Fuel Blend.

The main aim of this study is to investigate Aganonerion polymorphum leaf-ethyl acetate extract (APL-EAE) and its inhibiting effect for steel in ethanol fuel blend. The immersion test, electrochemical and surface analysis techniques were successfully carried out in this research. Scanning electron microscope images indicated that the ethanol fuel blend induced pitting corrosion of steel.