This study examines the vertically resolved cloud measurements from the cloud-aerosol lidar with orthogonal polarization instrument on Aqua satellite from June 2006 through May 2007 to estimate the extent to which the mixed cloud-phase composition can vary according to the ambient temperature, an important concern for the uncertainty in calculating cloud radiative effects. At -20 degrees C, the...

We report an investigation of water adsorption in the hydrophobic metal-organic framework Al(OH)(1,4-naphthalenedicarboxylate) by means of molecular simulation. We show how simple molecular models allow us to reproduce the experimental isotherm, and how grand canonical Monte Carlo simulations can help elucidate the question of the thermodynamic nature of the adsorption transition, which turns o...

Recently, a new simple method for the purification of CdSe-CdS-ZnS quantum dots by using membrane filtration, the filtration process, successfully separated the oleic acid from quantum dots through membranes purification after synthesis; purification of quantum dots is a very significant part of post synthetical treatment that determines the properties of the material. We explore the possibilit...

the recovery and removal of the most organic acids in liquid solutions is usually treated with fixed-bed adsorption processes. among many adsorbents, granular activated carbon (gac) is used to remove organic pollutants such as benzoic acid (ba) from wastewaters conventionally. in this research, adsorption isotherm curves of ba onto gac at varying temperatures 25-60 °c are developed and the amou...

The effect of molecular weight on the crystallization behavior poly(lactic acid) (PLA) both isothermally and non-isothermally was studied using differential scanning calorimetry polarized optical microscopy. Two distinct crystal forms (? ??) were investigated under normal conditions for different weights. Using microscopy, growth rate spherulites measured nucleation estimated. Heterogeneous mor...

The intent of this study was to evaluate the ability low-cost polyacrylamide/starch hybrid hydrogels in removing organic pollutants from wastewater, using phenol as a model compound, besides investigating adsorption/desorption behavior function composition. results indicated that hydrogel with lowest amount starch and crosslinking agent exhibited maximum adsorption capacity, 21 mg g−1. isotherm...

The malt bagasse is a solid residue, highly produced in the brewing industry. presence of high levels antioxidants its composition makes this residue an attractive possibility as corrosion inhibitor, besides being sustainable and low cost alternative to inorganic procedures currently used prevent corrosion. In sense, work evaluated efficiency powder inhibitor on surface AISI 1020 carbon steel, ...

Analytical ultracentrifugation is one of the classical techniques for the study of protein interactions and protein self-association. Recent instrumental and computational developments have significantly enhanced this methodology. In this paper, new tools for the analysis of protein self-association by sedimentation velocity are developed, their statistical properties are examined, and consider...

The thermodynamic and transport properties of diffusing species in microporous materials are strongly influenced by their interactions with the confining framework, which provide the energy landscape for the transport process. The simple topology and the cellular nature of the alpha cages of a ZK4 zeolite suggest that it is appropriate to apply to the study of the problem of diffusion in tight ...