In this study, we investigate the antibacterial activity of ZnO nanoparticles with various particle sizes. was prepared by base hydrolysis zinc acetate in a 2-propanol medium and also precipitation method using Zn(NO3)2 NaOH. The products were characterized x-ray diffraction (XRD) analysis, transmission electron microscopy (TEM) photoluminescence (PL) spectroscopy. Bacteriological tests such as minimum inhibitory concentration (MIC) disk diffusion performed Luria-Bertani nutrient agar media...

We report here our discovery of bulk superconductivity at rather high ${\mathit{T}}_{\mathit{c}}$ in samples having nominal compositions ${\mathrm{YNi}}_{4}$${\mathrm{BO}}_{0.2}$ (${\mathit{T}}_{\mathit{c}}$\ensuremath{\approxeq}12.5 K) and ${\mathrm{YNi}}_{2}$${\mathrm{B}}_{3}$${\mathrm{O}}_{0.2}$ (${\mathit{T}}_{\mathit{c}}$\ensuremath{\approxeq}13.5 K). While ${\mathrm{YNi}}_{4}$${\mathrm{BC}}_{0.2}$ seems to be a single phase material,...

Metabolomics is the study of metabolome which describes full repertoire small molecules, and analysis salivary metabolomics may help in identifying tumor-specific biomarkers for early diagnosis prediction tumor progression. The aim was to evaluate clinical utility metabolites oral leukoplakia squamous cell carcinoma.Salivary metabolomic profile patients diagnosed with (n = 21) carcinoma 22) compared apparently normal controls 18) using Q-TOF-liquid chromatography-mass spectrometry....

A systematic and complete antibacterial study on well-designed well-characterized microparticle (micro), nanoparticle (nano), capped nano ZnO has been carried out in both dark light conditions with the objective of arriving at mechanism activity ZnO, particularly dark. The present conclusively proved that reactive oxygen species (ROS) such as •OH, •O2–, H2O2 are significantly produced from aqueous suspension even mainly responsible for up to 17%, rather than Zn2+ ion leaching proposed...

Among the Weapons of Mass Destruction, chemical warfare (CW) is probably one most brutal created by mankind in comparison with biological and nuclear warfare. Chemical weapons are inexpensive relatively easy to produce, even small terrorist groups, create mass casualties quantities. The characteristics various CW agents, general information relevant current physical as well medical protection methods, detection equipment available decontamination techniques discussed this review article. A...

Microcrystalline particles of Fe2O3 having different sizes (varying between 70 and 5 nm) have been synthesised using a novel three-component micro-emulsion technique. A succession crystal-size-induced structural transitions was observed. While alpha -Fe2O3 found to nucleate for particle size above 30 nm, gamma preferentially formed below whereas amorphous at nm. These transformations related the increase in unit-cell volume that occurs as is decreased. The dependence lattice parameter shown...

With the rapid development of nanomedicines, it is important to understand their potential immunotoxicity. Zinc oxide (ZnO) nanoparticles have several applications in pharmaceutical and biomedicine industries. This study investigates effect particles size (nano micro) ZnO on viability, phagocytosis, cytokine induction human monocytes, THP-1 cells, a model innate immune system. Cells were incubated with nano (approximately 100 nm) micro 5 μm) sized concentration range 10–100 μg/ml. The...

Reports the results of studies on a new and very interesting intermediate valence (IV) material EuPd2Si2, which exhibits some unique features not observed so far in any Eu-based IV system. The magnetic susceptibility clear maximum isomer shift shows an unusually large temperature dependence interval 120-200K.

Abstract A green, simple, and cost effective electrochemical method to synthesize pure graphene oxide (GO) nanosheets (GNs) using pencil in ionic liquid medium is reported. The morphology microstructure of prepared GNs GO are examined scanning electron microscopy (SEM), transmission (TEM), atomic force (AFM), X‐ray diffraction (XRD), Raman spectroscopy; the experiments confirm formation high quality graphene. synthesized used for real‐time label‐free surface plasmon resonance (SPR) sensing...

Reports a high-temperature itinerant ferromagnet CeRh3B2 which orders magnetically at 115K. The magnetic ordering seems to be intrinsic and presumably arises from the Rh d-band. Similar compounds of La, Pr Nd do not show any down 77K.

The antibacterial activity of ZnO nanoparticles (nano ZnO) on various microorganisms has been investigated in this study and acting mechanism is proposed for E. coli a model organism by analyzing the growth, permeability morphology bacterial cells. experimental results indicated 1 mmoL (81.4 microg) nano could completely inhibit growth 10(7) cfu/mL cells liquid Luria-Betrani medium. In biochemical study, it observed that, resulted leakage proteins. Chemiluminescence assay proved generation...

Increased levels of particulate air pollution are associated with increased respiratory and cardiovascular mortality morbidity. Some epidemiologic toxicological researches suggest ultrafine particles (<100 nm) to be more harmful per unit mass than larger particles. In the present study, effect particle size (nano micro) carbon black (CB) on viability, phagocytosis, cytokine induction, DNA damage in human monocytes, THP-1 cells, was analysed. The cells were incubated nanosize (~50 micron...

Polycystic Ovary Syndrome is a multifactorial reproductive problem and leading cause of female infertility worldwide. Evidences have shown that Oxidative Stress decreased antioxidant status are often linked with PCOS. Insulin Resistance in PCOS patients ranges from 50% to 70% may encourage OS by production reactive oxygen species.Objective: Our study determines serum MDA levels along plasma glucose, insulin, insulin resistance obese nonobese subjects.Materials methods: A case control was...

Ionic liquids (ILs) are salt that exist in the liquid phase at and around 298 K comprised of a bulky, asymmetric organic cation anion usually inorganic ion but some ILs also with anion. have attracted much attention as replacement for traditional solvents they possess many attractive properties. Among these properties, intrinsic conductivity, low volatility, high chemical thermal stability, combustibility, wide electrochemical windows few. Due to negligible or nonzero volatility solvents,...

A hemoglobin (Hb) modified glassy carbon electrode consisting of low cost as commercially received impure-multiwalled nanotube (i-MWCNT, 90% purity) and nafion (GCE/i-MWCNT@Hb/Nf) has been demonstrated for improved electric wiring Hb efficient direct electron-transfer characteristics. This report is the first attempt coupling i-MWCNT with biosensor purpose. The was assembled by a simple preparation procedure within 38.3 (±2.5) min time, without any linker, surfactant, promoters, extensive...

Zinc oxide nanoparticles (ZnO-NPs) are increasingly used in sunscreens, biosensors, food additives, pigments, rubber manufacture, and electronic materials. With the wide application of ZnO-NPs, concern has been raised about its unintentional health environmental impacts. This study investigates toxic effects ZnO-NPs human lung cells. In order to assess toxicity, epithelial cells (L-132) were exposed dispersion 50 nm at concentrations 5, 25, 50, 100 μ g/mL for 24 h. The toxicity was evaluated...