Aerosol optical thickness (AOT) is typically estimated from satellite radiance observations through computationally demanding deterministic retrievals based on manually constructed physical models. A statistical alternative to this deterministic method is to train regression models for AOT prediction from radiance data. This approach provides fast retrievals albeit with somewhat reduced accurac...

[1] A ground-based sky radiometer was used to measure direct and diffuse solar irradiances at Dunhuang, China from January 1999 to March 2001. The aerosol optical thickness (AOT), Angstrom exponent (a), volume size distributions, single scattering albedo and refractive index of aerosols were simultaneously retrieved using the ‘‘SKYRAD’’ inversion code and their seasonal variations and statistic...

Sperm chromatin integrity is vital for successful pregnancy and transmission of genetic material to the offspring. We evaluated chromatin integrity in sperm from 60 infertile men and 7 fertile donors comparing the sperm chromatin structure assay (SCSA), TdT-mediated-dUTP nick end labeling (TUNEL), the sperm chromatin dispersion (SCD) test, and acridine orange staining technique (AOT). The TUNEL...

We explore the relationship between column aerosol optical thickness (AOT) derived from the Moderate Resolution Imaging SpectroRadiometer (MODIS) on the Terra/Aqua satellites and hourly fine particulate mass (PM2.5) measured at the surface at seven locations in Jefferson county, Alabama for 2002. Although the MODIS AOT is a column value and the PM2.5 mass is representative of near-surface condi...

This thesis describes the synthesis of yttrium oxide nanoparticles in an AOT/isooctane reverse micelle solution. Two synthetic methods are compared. First is the precipitation reaction between yttrium nitrate and ammonia, second is the hydrolysis of yttrium isopropoxide. The effects of annealing of the resulting the yttrium oxide nanoparticles are also described. The nitrate method produced net...

silver-polyaniline (ag-pani) nanocomposites were prepared by in-situ oxidative polymerization of aniline monomer in sodium bis(2-ethylhexyl) sulfosuccinate (aot) solution as an emulsifier. the synthesis of silver-polyaniline nanocomposites was investigated as a function of several parameters such as aniline concentration, concentration of emulsifier (aot), concentration of oxidation agent and c...

This study aims to calculate the combined and individual effects of optical thickness aerosols (AOT) precipitable water vapour (PWV) on solar radiation reaching Earth’s surface at a global scale analyse its spatial temporal variation. For that purpose, novel but validated methodology is applied CERES SYN1deg products for period 2000–2019. Spatial distributions AOT PWV effects, both individually...

We report the formation and characterization of multiply negatively charged sodium bis(2-ethylhexyl) sulfosuccinate (NaAOT) aggregates in the gas phase, by electrospray ionization of methanol/water solution of NaAOT followed by detection using a guided-ion-beam tandem mass spectrometer. Singly and doubly charged aggregates dominate the mass spectra with the compositions of [Na(n-z)AOT(n)](z-) (...

Introduction Conclusions References Tables Figures ◭ ◮ ◭ ◮ Back Close Full Screen / Esc Abstract Introduction Conclusions References Tables Figures ◭ ◮ ◭ ◮ Back Close Full Screen / Esc Abstract The statistical uncertainty of globally averaged MODIS aerosol optical thickness at 0.55 µm (AOT) and top of atmosphere CERES cloud-free shortwave radiative effect (SWRE) is presented. All analysis is pr...

This paper is a continuation of previously published on this issue that studied the microencapsulation calcium nitrate in urea-formaldehyde shell using Aerosol OT (AOT) hexane solution. The aim to determine quantity AOT optimizes microcapsule distribution, diameter, and thickness. Different quantities AOT, namely 0.25 g, 0.50 1.5 2.5 g were dissolved 180 solution prepare continuous phase. A Sca...