نتایج جستجو برای: aridand dry sub

تعداد نتایج: 298283  

Journal: :Canadian Journal of Chemistry 2021

In this study, we use Monte Carlo track chemistry simulations to show that "dry" secondary electrons, precursors of the "hydrated" electron (e<sup>-</sup><sub>aq</sub>), can be scavenged on sub-picosecond time scale prior hydration, by a high concentration (>0.1-1 M) azide ions (N<sub>3</sub><sup>-</sup>) in water irradiated with <sup>60&...

Journal: :Chemistry of Materials 2022

The exsolution of metallic nanoparticles (NPs) from perovskite oxides is a promising strategy for synthesizing supported catalysts. associated segregation A-site cations on the surface challenging to investigate experimentally and often detrimental catalytic performance. In this work, we found that during in situ Ni-Co bimetallic Pr0.45Ba0.45Mn1–x(Co1/3 Ni2/3)xO3±δ, cation enrichment occurred w...

2005
C. M. Ferguson

Catchments are the first potential barrier to pathogen hazards in the water supply system. Reducing pathogen loads exported from catchments to drinking water reservoirs is thus an important priority in applying a risk-based approach to managing water supplies. Although predictive models are available to estimate sediment and nutrient loads, few models are available to predict either bacterial i...

Several mesoporous nickel-based catalysts with MgO-Al2O3 as the catalyst support were prepared using a co-precipitation method at a constant pH. The supports were prepared from the decomposition of an Mg-Al hydrotalcite-like structure which had already been prepared with Mg/Al=1. Prior to impregnating 10 wt.% nickel on the supports, the precursor was decomposed at several ...

Journal: :Atmospheric Chemistry and Physics 2022

Abstract. We investigated the radiative impact of recent process-based improvements to oceanic ozone (O3) dry deposition parameterisation and empirical lightning-generated oxides nitrogen (LNOx) by conducting a 5-year simulation Australian Community Climate Earth System Simulator – United Kingdom Chemistry Aerosol (ACCESS-UKCA) global chemistry–climate model, with effects O3, methane (CH4) aero...

Paper-based microfluidic system for tear electrolyte analysis† †We declare no competing financial interests. ‡ ‡Electronic supplementary information (ESI) available: Microscopic images of G1 paper and G41 paper under brightfield; optimization of CO2 laser radiation fluence and beam speed for ablating filter paper-G1; photographs of DI water diffusion in microfluidic channels with different lengths, different widths, different viscosities of fluid and different numbers of channels; fluorescence intensity readouts of Na+ and K+ ions with varied concentrations of fluorescent probes; effect of variations in temperature on fluorescence intensity; photographs of DMSO on G1 paper dried in the air; calibration curves of electrolyte sensing on G1 paper using microplate reader measurement; calculation of sensitivity of the fluorescent sensors based on International Union of Pure and Applied Chemistry (IUPAC) guidelines; quantification of ion interference in buffer solution and artificial tear fluid; light attenuation of LED lights using different optical filters; the design of the sample collection device and its potential clinical use; calibration curves of electrolyte sensors using the paper-based microfluidic system; quantifications of evaporation effect on sampling process; design of the sample collection device and its potential clinical use; batch-to-batch variation experiments; equation for background subtraction; movies of sample collection and measurements. See DOI: 10.1039/c6lc01450j Click here for additional data file. Click here for additional data file. Click here for additional data file. Click here for additional data file.

2017
Ali K Yetisen Nan Jiang Ali Tamayol Guillermo U Ruiz-Esparza Yu Shrike Zhang Sofía Medina-Pando Aditi Gupta James S Wolffsohn Haider Butt Ali Khademhosseini Seok-Hyun Yun

The analysis of tear constituents at point-of-care settings has a potential for early diagnosis of ocular disorders such as dry eye disease, low-cost screening, and surveillance of at-risk subjects. However, current minimally-invasive rapid tear analysis systems for point-of-care settings have been limited to assessment of osmolarity or inflammatory markers and cannot differentiate between dry ...

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