Facile Solvent-Less Preparation, Characterization and Investigation of Photocatalytic Properties of Pr6O11 Nanostructures

Pr6O11 nanostructures were synthesized through a facile solvent-less method. Nanostructures were prepared by heat treatment in air, using [Pr L(NO3)2]NO3 (L bis-(salicyladehyde)-1,4-butadiimine Schiff base ligand), as new precursor, which was obtained by a solvent-free solid–solid reaction from praseodymium nitrate and Schiff base ligand. The as-obtained nanostructures were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and ultraviolet–visible (UV–vis)spectroscopy. The obtained results demonstrated that utilizing of this precursor is suitable choice for preparation of Pr6O11 nanostructures with very uniform sphere-like morphology. The photocatalyst activity of as-obtained Pr6O11 was also examined by degradation of 2-naphthol as organic contaminant under ultraviolet light irradiation

Rare-Earth-Based Materials for Heterogeneous Photocatalysis

Recently, the synthesis of rare-earth-based nanostructures as a significant class of materials with photocatalysis activity has attracted the attention of researchers. Many studies have shown their applications in various fields, specifically in photocatalysis. There are different methods to synthesis of rare-earth nanostructures. In this study, we discuss about modification of rare-earth-based materials. Also production methods and their advantages and disadvantages have been presented, briefly. Finally, photocatalytic applications of rare-earth nanostructures are highlighted

Facile Surfactant-Free Preparation, Characterization and Investigation of Optical Properties of Zirconia Nanostructures

Zirconia nanostructures have been successfully synthesized through sonochemical-assisted rout. Zirconia nanostructures were synthesized by employing of the zirconyl nitrate and tetramethylethylenediamine (TMED) as starting materials. Here, TMED was used not only as precipitator, but also as capping agent to form zirconia nanostructures. The products were analyzed by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), ultraviolet–visible (UV–vis) spectroscopy and scanning electron microscopy (SEM). The obtained results demonstrated that utilizing of this precipitator is suitable choice for preparation of zirconia nanostructures with very uniform sphere-like morphology

Facile Solvent-Less Preparation, Characterization and Investigation of Photocatalytic Properties of Pr6O11 Nanostructures

Pr6O11 nanostructures were synthesized through a facile solvent-less method. Nanostructures were prepared by heat treatment in air, using [Pr L(NO3)2]NO3 (L bis-(salicyladehyde)-1,4-butadiimine Schiff base ligand), as new precursor, which was obtained by a solvent-free solid–solid reaction from praseodymium nitrate and Schiff base ligand. The as-obtained nanostructures were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and ultraviolet–visible (UV–vis)spectroscopy. The obtained results demonstrated that utilizing of this precursor is suitable choice for preparation of Pr6O11 nanostructures with very uniform sphere-like morphology. The photocatalyst activity of as-obtained Pr6O11 was also examined by degradation of 2-naphthol as organic contaminant under ultraviolet light irradiation

Photocatalytic and biomedical investigation of green synthesized NiONPs: Toxicities and degradation pathways of Congo red dye

In this study the biomedical and catalytic ability of green synthesized nickel Oxide nanoparticles (NiONPs) was investigated. The extract of medicinal plant Tribulus terrestris were used to synthesized NiONPs. The as-synthesized NiONPs were in nano scale and were characterized with X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), High-Resolution Transmission Electron Microscopy (HRTEM), Scanning Electron Microscope (SEM), X-ray photoelectron spectroscopy (XPS) and Energy Dispersive X-ray spectroscopy (EDX). The synthesis of NiONPs was ensured with surface Plasmon resonance (SPR) at 425 nm and the strong EDX. The effect of different concentrations of plant extract on the size of NiONPs was evaluated. The HRTEM results showed particle size between 60 - 90 nm. The study showed that lesser the extract concentration, more spherical and small sized particles were obtained without aggregation. The biological applications of NiONPs were evaluated against different fungal species like Asper gillusflavus, Asper gillusfumigatus, Asper gillusniger and standard medicine Terbinafine. A. niger, A. flavus and A. fumigatus exhibited 57, 63 and 52 % inhibition compared with inhibition of the reference medicine which is 98, 100 and 100%. NiONPs have been shown to be more effective against gram-positive bacteria than gram-negative bacteria like E. Coli 9(±0.7) and S. aureus13 (±0.8). Moreover, antioxidant properties of the as-synthesized NiONPs were evaluated with 2, 2 diphenyl-1-picrylhydrazyl) (DPPH). The catalytic ability of green synthesized of NiONP was investigated for the degradation of Congo red dye (CR) as a hazardous environmentally contaminations in water. The biosynthesized NiONPs were found to be active catalytic for the degradation toxic dyes like CR. the catalytic activity of NiONPs can be explained by its small size compared with balk material. Mechanisms for CR degradation have been proposed. The Ecotoxicity of CR and components derived from dye was investigated with Ecological Structure Activity Relationship (ECOSAR) program

Facility management information taxonomy framework for queries in healthcare buildings

Healthcare facilities need to ensure providing safer services to patients without interruptions since disease diagnosis and treatments highly depend on medical equipment and spaces. Therefore, facility management (FM) of healthcare facilities requires a clear and rapid information flow for decision making processes to impede possible interruptions. Non-availability of information, accuracy problems and incomplete information induce more severe problems such as cost overruns, reduced productivity and decrease in customer satisfaction. Thus, this paper aims to develop a strategic information taxonomy framework for FM inquiries in healthcare facilities to address the research problem. Design Science Research methodology cycles such as relevance, rigor and design are adopted during the flow of the research. In the relevance cycle, research requirements and the importance of FMITs were firstly observed with two scenarios, then in the rigor cycle, 64 FM information types (FMITs) were determined, classified and refined under three categories such as; managerial, technical, and financial as a result of literature review and pilot study. Determined FMITs were analyzed with newly developed MonteCarlo Simulation and TOPSIS Techniques on healthcare facilities. As a result of analysis, 62 FMITs were found important for healthcare facilities. The most important FM Informations Types were found as “identification of hazardous or other risks to people or property” (0,985), “real-time operation parameters/post occupancy data integration” (0,939), and “predicted lifetime of assets” (0,818) in managerial, technical and financial information types respectively. Finally, in design cycle, facility management information taxonomy, which was created from determined FMITs, and importance levels of determined FMITs were evaluated with two case studies. Results showed that while maintenance contracts have a positive impact to prevent negative impact of costs, they can cause interruption in information management in facility management. Additionally, there are some view difference in professions. For example, construction management literature focuses wastes that are incurred at the end of building lifecycle or construction process. However, there aren't much attention to manage wastes that occurred during operation and maintenance stage. Beside this, regulations and standards have importance to store, use and manage FMITs. The analysis results acknowledged that the use of information taxonomy framework can increase the effectiveness of the healthcare FM

The profiling, identification, quantification and analysis of differentially expressed genes (DEGs) in response to drug treatment in lung cancer

The profiling and identification of genes that are differentially expressed is frequently used to underpin the underlying molecular mechanisms of biological conditions and provides a molecular foothold on biological questions of interest. However, this can be a daunting task since there is a cross talk and overlap of some of the components of the signalling pathways. The deregulation of the cell cycle signalling pathway is a hallmark of cancer, including lung cancer. Proper regulation of the cell cycle results in cellular homeostasis between cell proliferation and cell death. The comprehension of the cell cycle regulation in drug metabolism studies is of significance. This study aimed at elucidating the regulation of cell cycle genes’ in response to LPV/r in lung cells. Thus, this study describes methodology for revealing molecular mechanisms employed by LPV/r to induce stress on genomic DNA. This approach is based on the interrogation of a panel of 84 genes related to the cell cycle pathway, and how the differentially expressed genes’ expression pattern corroborates loss in nuclear integrity (phenotypic observation). MAD2L2, AURKB and CASP3 gene expressions were further confirmed by RT- qPCR. Furthermore, the use of in-silico bioinformatics tools integrates the molecular profiles and phenotypic changes. This approach revealed the activation of the DNA damage response (DDR) pathway in response to LPV/r treatment. The proposed methodology will aid in the comprehension of drug metabolism at genotypic and phenotypic levels. •Gene profiling often reveals the underlying molecular mechanisms. •RT 2 PCR gene arrays have integrated patented quality controls and allow reliable gene expression analysis. •In-silico bioinformatics analysis help reveal pathways affected, that often correspond to phenotypic changes/features.The South African Medical Research Council (SAMRC)http://www.elsevier.com/locate/mexam2022Internal Medicin

Facile preparation of Nd 2 Zr 2 O 7 –ZrO 2 nanocomposites as an effective photocatalyst via a new route

Nd2Zr2O7–ZrO2 nanocomposites were prepared via a facile process with propylene glycol as novel connecting agent and benzene tricarboxylic acid as a new complexing agent. The as-obtained Nd2Zr2O7–ZrO2 nanocomposites were characterized by transmission electron microscopy (TEM), UV–vis diffuse reflectance spectroscopy, energy dispersive X-ray microanalysis (EDX), Fourier transform infrared (FT-IR) spectroscopy, field emission scanning electron microscopy (FESEM), and X-ray diffraction (XRD). According to the morphological studies of the as-synthesized nanocomposites, it was found that the shape and particle size of Nd2Zr2O7–ZrO2 nanocomposites depended on the space-filling template type, dosage of space-filling template and tricarboxylic acid as complexing agent. Nd2Zr2O7–ZrO2 nanocomposites with different shapes and grain sizes have been synthesized. The photocatalytic behavior of as-produced Nd2Zr2O7–ZrO2 nanocomposites was also investigated through photodegradation of methylene blue dye and 2-naphthol as water pollutants