Publications by authors named "Md Saidul Islam"

Eichhornia crassipes (Mart.) Solms, also known as Pontederia crassipes Mart, has traditionally been used for its sedative, antipsychotic, and memory-enhancing properties. However, its effects against Alzheimer's disease (AD) remain unexplored.

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Cesarean delivery plays a significant role in reducing maternal and child mortality. However, unjustified cesarean section (C-section) delivery is rising worldwide, including in Bangladesh. C-section delivery rates in Bangladesh have increased from 2.

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Climate change is causing more frequent and extraordinary extreme weather events that are already negatively affecting crop production. There is a need for improved climate risk assessment by developing smart adaptation strategies for sustainable future crop production. This study aims to assess yield impacts of extreme temperatures and rainfall variability on wheat, and winter and summer season-planted maize in northwestern Bangladesh.

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Sucrose-derived layered carbon materials hold promise for energy storage applications, but their synthesis is challenging due to sucrose's molecular structure and pyrolysis behavior. This work demonstrates the successful synthesis of layered carbon from sucrose using FeCl₃ as a catalyst. The resulting layered carbon was then functionalized via Hummer's oxidation and Fenton reaction methods to enhance proton conductivity.

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Background: The 'Integrated Model for Supervision' (IMS) offers important guidance for how to provide supportive supervision within mental health and psychosocial support (MHPSS) programming in humanitarian emergencies. The current study sought to (i) describe how the IMS was implemented following IMS training; (ii) assess whether delivery of the IMS training is associated with changes in a selection of theoretically supported quantitative outcomes; and (iii) elicit feedback on the IMS and its implementation process.

Methods: Data was collected from a participant pool of n = 119 individuals from six different humanitarian organisations that had previously participated in an IMS training.

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Article Synopsis
  • L. is a medicinal plant being studied for its potential effects on Alzheimer's disease (AD), with a focus on its leaves and flowers, using various methanol, ethanol, and ethyl extracts.
  • Molecular docking studies identified three key phytochemicals—protoberberine, protopine, and codeine—that show strong binding affinities and the ability to target multiple enzymes involved in AD, such as AChE and BACE-1.
  • The extracts demonstrated promising antioxidant and anti-cholinesterase activities, supporting the hypothesis of L.'s anti-AD properties, but further validation is recommended for a complete assessment.
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Designing a cheap, competent, and durable catalyst for the oxygen evolution reaction (OER) is exceedingly necessary for generating oxygen through a water-splitting reaction. In this project, we have designed a ZIF-67-originated molybdenum-doped cobalt phosphide (CoP) using a simplistic dissolution-regrowth method using NaMoO and a subsequent phosphidation process. This leads to the formation of an exceptional hollow nanocage morphology that is useful for enhanced catalytic activity.

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Phages are the most diversified and dominant members of the gut virobiota. They play a crucial role in shaping the structure and function of the gut microbial community and consequently the health of humans and animals. Phages are found mainly in the mucus, from where they can translocate to the intestinal organs and act as a modulator of gut microbiota.

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(Forssk.) Brownsey & Jermy has been commonly used in traditional medicinal practices but its effects on multi-drug-resistant (MDR) bacteria have remained unexplored. We aimed to assess the antibacterial potential of the ethanol extract of (EECD) against MDR and to identify potential multi-targeting antibacterial phytocompounds through computer-aided drug design focusing on the LasR and LpxC proteins.

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L. is widely used in indigenous and traditional medicine, but its impact on multi-drug resistant (MDR) bacterial infections mostly remains unknown. Therefore, this study aimed to evaluate the antibacterial efficiency of methanol and ethyl acetate extracts of L.

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Climate change, one of the severest environmental threats to humankind, disproportionately affects low-income, developing countries in the Global South. Having no feasible mitigation alternatives, these countries resort to adaptation efforts to address climate perturbations. Climate change adaptation (or resilience) is primarily a localized course of action that depends on individuals, social networks, economies, ecologies, political structures, and the capabilities of all those to work collectively to absorb, learn from, and transform in the face of new realities.

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Herein, we report nanodiamond oxide (NDOx), obtained from modified Hummers' oxidation of nanodiamond (ND), showing excellent proton conductivity and thermal stability. NDOx possesses hydrophilicity resulting in higher water adsorption and the retention of functional groups at elevated temperatures can be attributed to the high proton conductivity and thermal stability, respectively.

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Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) inactivation of pH-dependent graphene oxide (GO) nanosheets is presented. The observed virus inactivation using an authentic virus (Delta variant) and different GO dispersions at pH 3, 7, and 11 suggests that the higher pH of the GO dispersion yields a better performance compared to that of GO at neutral or lower pH. The current findings can be ascribed to the pH-driven functional group change and the overall charge of GO, favorable for the attachment between GO nanosheets and virus particles.

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An effective and sensitive analytical method was developed to quantify the most common pesticide residues (difenoconazole, dimethoate, pymetrozine, and chlorantraniliprole) used for brinjal cultivation in Bangladesh. The quantification of the analytes was done using liquid chromatography-tandem mass spectrometry (LC-MS/MS). The samples were extracted using a modified QuEChERS method and followed by purification with dispersive solid phase extraction (d-SPE) sorbents (PSA, GCB, and C18).

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The viability of biorefining technology primarily depends on the facile cellulose conversion route with adequate conversion efficiency. Here we have demonstrated the microwave-assisted hydrolysis of cellulose to glucose using polyoxometalate (POM) clusters as acid catalysts. Two different types of POM, including Wells-Dawson and Keggin were justified as catalysts in the cellulose conversion process.

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Remarkably high mixed proton and electron conduction arising from oxidized single-wall carbon nanotubes at room temperature is demonstrated. The respective proton and electronic conductivities are 1.40 and 8.

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The key challenges for converting chitin to 5-hydroxymethylfurfural (5-HMF) include the low 5-HMF yield. Moreover, the disadvantages of traditional acid-base catalysts including complex post-treatment processes, the production of by-products, and severe equipment corrosion also largely limit the large-scale conversion of chitin to 5-HMF. In this view, herein we have demonstrated a microwave aided efficient and green conversion of chitin to 5-HMF while using polyoxometalate (POM) as a catalyst and DMSO/water as solvent.

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The development of efficient proton conductors that are capable of high power density, sufficient mechanical strength, and reduced gas permeability is challenging. Herein, we report the development of a series of aromatic sulfonic acid/graphene oxide hybrid membranes incorporating benzene sulfonic acid (BS), naphthalene sulfonic acid (NS), naphthalene disulfonic acid (DS) or pyrene sulfonic acid (PS) using a facile freeze dried method. For out-of-plane proton conductivity, the 3DGO-BS and 3DGO-NS yielded proton conductivities of 4.

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Article Synopsis
  • The interlayer spaces in 2D layered materials like graphene and metal compounds can trap gases, facilitate ion transfer, and purify water.
  • By mixing graphene oxide (GO) with nickel hydroxide (Ni(OH)), researchers created a unique 2D hybrid sheet that allows control over the "inner" pressure within the layers.
  • Tuning the pressure by reducing GO affects the magnetic properties of Ni(OH), showing that reducing interlayer distance decreases its ferromagnetic transition temperature, demonstrating that pressure changes can influence material behavior in various applications.
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Herein, we report the encapsulation and release of antimalarial drug quinine (QN) using three nanocarriers, including MCM-41 (1), and its 3-aminopropyl silane (aMCM-41 (2)) and 3-phenylpropyl silane (pMCM-41 (3)) surface functionalized derivatives. The pH and thermal optimization effects on QN adsorption and release from 1, 2 and 3 were investigated.

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The crystallinity of inorganic solids like metal oxides after the porosity design is the crucial factor that should be investigated for enhancing their physicochemical properties. In most cases, metal oxide frameworks around mesopores, that are designed through the supramolecular mediated approach, are resulted to be amorphous. Accordingly, a rational guideline has been required for enhancing the crystallinity of frameworks at such concave surfaces.

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Bifunctional electrocatalytic properties of freeze-dried Ni/NiOx, freeze-dried NiO, and freeze-dried Ni(OH)2 are reported. Freeze-dried Ni(OH)2 was synthesized by the freeze-drying method. Freeze-dried Ni/NiOx and freeze-dried Ni were obtained from the thermal annealing of the material.

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Ion conduction through graphene oxide (GO) nanosheets that is pH-switchable between H (in acid) and OH (in base) ions is demonstrated. This finding is the first observation of this type for ion conductive materials and demonstrates an example of stimuli-driven ion-conduction switching.

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The main pathological hallmark of Parkinson's disease (PD) is the presence of Lewy bodies, which mainly consist of aggregated α-synuclein. Based on the neurotoxicity of oligomeric α-synuclein and its significance in the aetiology of PD, there has been decades of effort to elucidate an enzyme specifically degrading oligomeric α-synuclein. Here we report an enzyme, Omi, which specifically recognizes and precisely degrades oligomeric α-synuclein but not monomeric α-synuclein.

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