Quartz

03/01/2023 - "A section of hollow quartz capillary (HQC), which acts as an exoskeleton, is periodically merged with a single-mode fiber (SMF) by the arc-discharge method. "
07/05/2016 - "Novel filled skutterudites BayNi4Sb12-xSnx (ymax = 0.93) have been prepared by arc melting followed by annealing at 250, 350 and 450 °C up to 30 days in vacuum-sealed quartz vials. "
05/01/2010 - "The spectroscopic method of optical emission was employed to diagnose the characteristic parameters of the arc plasma discharge in the quartz capillary. "
09/01/2006 - "The Glória quartz-monzodiorite shows metaluminous and calc-alkaline tendency with intermediate K content, comparable to that of volcanic-arc rocks. "
09/01/2006 - "The Glória quartz-monzodiorite: isotopic and chemical evidence of arc-related magmatism in the central part of the Paleoproterozoic Mineiro belt, Minas Gerais State, Brazil."

08/01/2002 - "These studies showed that PVNO inhibited development of fibrosis from quartz dust and improved lung clearance of quartz after inhalation exposure. "
06/01/1998 - "Exposures to relatively low concentrations of quartz may be capable of causing hilar node fibrosis, impairing the clearance of any quartz inhaled subsequently. "
07/01/1992 - "The aim of our study was to assess morphological and functional features of AM in an experimental model of quartz-induced lung fibrosis by flow cytometric methods. "
07/01/2015 - "The quartz group lungs silicotic lesions focused on II~III level, the TD treatment group was mainly with I level, the NAC treatment group was mainly with I~II level, and the combined treatment group only showed little silicotic nodule, no obvious fibrosis. "
06/01/2003 - "Construction workers are exposed to quartz containing respirable dust, at levels that may cause fibrosis in the lungs. "

12/01/1991 - "We conclude that control of quartz exposure in the Vermont granite industry to levels which are on average less than the current OSHA standard has essentially eliminated definite radiographic changes of silicosis. "
11/01/2020 - "In the absence of any information about its potential toxicity, a comprehensive rat animal model study (see Fedan et al., 2020) was designed to investigate the bioactivities of several FSDs in comparison to MIN-U-SIL® 5, a respirable α-quartz reference dust used in previous animal models of silicosis, in several organ systems. "
09/01/2019 - "In view of the progressive emergence of new cases of silicosis in artificial quartz conglomerate workers, we performed a study to analyze the characteristics of silicosis produced by this new agent in Spain. "
01/01/2019 - "Recent studies have shown an increase in the prevalence of silicosis due to the use of artificial quartz aggregates (AQA). "
01/01/2012 - "For this purpose, this study was planned to elicit the frequency of silicosis in quartz mill workers in Cine which is one of the largest quartz and feldspat areas, and to detect the working conditions, to inform the workers to improve the working conditions. "

01/01/2013 - "To investigate the potential causes of this relatively high lung cancer incidence, this study employed Fourier transform infrared spectroscopy (FTIR) transmission spectroscopy to identify the chemical composition of the PM2.5 collected using Quartz Fibre Filters (QFFs) coupled with MiniVolTM portable air samplers (Airmetrics). "
01/01/2011 - "The aim of this study was to detect early lung cancer rapidly with a novel and cost-effective quartz crystal microbalance (QCM) immunosensor. "
01/01/2001 - "A chronic study in rats was also used to predict the human excess risk of lung cancer at various quartz burdens, including mean Mcrit (0.39 mg/g lung). "
01/01/2018 - "Evaluating these parameters using human lung cancer (A549) and fibroblast (MRC5) cell lines confirmed that line-scan data acquisition at 785 nm using complete cell media on a quartz substrate gave optimal performance. "
02/01/2017 - "Quartz in ash, and air in a high lung cancer incidence area in China."

10/01/2014 - "Further studies were performed to examine strain differences of the effects of chronic inflammation caused by quartz i.t. "
07/01/2009 - "In the first study, fine-sized quartz particle exposures in rats (500 nm) produced similar effects (inflammation, cytotoxicity, cell proliferation, and/or histopathology) compared to smaller 12-nm nanoscale quartz particles. "
01/01/2001 - "From a toxicokinetic/dynamic model fit to lung burden and pulmonary response data from a subchronic inhalation study in rats, we estimated the minimum critical quartz lung burden (Mcrit) associated with reduced pulmonary clearance and increased neutrophilic inflammation. "
01/01/2020 - "Single Intratracheal Quartz Instillation Induced Chronic Inflammation and Tumourigenesis in Rat Lungs."
01/01/2020 - "Quartz can increase oxidative stress, lipid peroxidation, and inflammation. "