AN EVALUATION OF THE PERFORMANCE OF LEGGINGS BASED ON A CONSUMER SURVEY

The purpose of this research was to identify the legging features that athleisure consumers desire and the performance problems they frequently encounter. A non-probability sample (n=133) of college students who identified as female and wore leggings for non-athletic purposes were surveyed. The questionnaire was designed based upon examination of online product reviews and current complaints with legging products. The results of the survey were used to design and complete a laboratory evaluation. Laboratory samples and methods were then chosen to assess the performance qualities desired when purchasing leggings and the problems encountered when wearing leggings by the surveyed consumers. Three brands were identified by the survey as regularly consumed legging brands and included: Lululemon, Nike, and 90 Degree. All laboratory samples were a nylon, spandex blend fabric. Garments were laundered and evaluated after one, five, ten, and twenty washes. All evaluations were completed in a Textile Testing Laboratory according to AATCC and ASTM standard test methods

Trend analysis of rainfall and streamflow in "Alto Teles Pires Watershed", northern Brazil.

In this studied were analyzed the streamflow and rainfall of the "Alto Teles Pires Watershed", northern Brazil, in the period from 1977 to 2009.H11G-0934

Method for Hydraulically Separating Carbon and Classifying Coal Combustion Ash

A method for selective separation of particles from a particle-containing material includes preparing a slurry of the particle-containing material and a dispersant, passing the slurry through a hydraulic classifier in a first direction, establishing a particle flow in a direction that is different from the first direction, and recovering particles having a mean particle size of about 2-7 μm. The flow of particles defines a cross-current flow relative to the slurry feed direction. The method further includes providing the classifier with an interior divider assembly defining at least one inclined channel. The divider assembly typically includes a plurality of substantially parallel dividers separating the classifier into multiple channels having a substantially equal internal volume. A hydraulic classifier for separating particles having a mean particle size of from about 2-7 μm in accordance with the present method is provided also

Method of Removing Carbon from Fly Ash

An improved froth flotation method is provided for the removal and recovery of an ultra-fine constituent such as carbon from tailings such as fly ash. A flotation apparatus is utilized that preferably includes a slurry conditioning tank and a flotation cell. The method of the present invention comprises the improvement of utilizing a flotation reagent formulation comprising a mixture of fuel oil and petroleum sulfonate. The method broadly includes the steps of (1) producing a slurry, or solid suspension, of the material containing the constituent to be recovered by adding a preselected amount of water or other slurrying liquid; (2) adding the flotation reagent comprising a mixture of fuel oil and petroleum sulfonate to the slurry that renders the selected constituent hydrophobic; (3) aerating the conditioned slurry; (4) recovering the selected ultra-fine constituent from an upper portion of the flotation apparatus; and (5) withdrawing and recovering tailings from a lower portion of the flotation apparatus

Technology and Methodology for the Production of High Quality Polymer Filler and Super-Pozzolan from Fly Ash

A novel method for producing fly ash material with a range of particle sizes from about 2.0 to about 4.0 μm is provided utilizing superplasticizers. The method produces fly ash material suitable for use as filler material in the plastics industry and super pozzolan for the concrete industry