163,900 research outputs found
William Pilling
No full textHandwritten answers by William Pilling of Price, Utah, for a questionnaire filled out for Utah Works Progress Administration\u27s "Pioneer personal history" survey. He was born in Fillmore, Utah, and worked as a rancher and woodsman. Written down by Delos Myers of Price on July 22, 193
The kinetic model of pilling revisited
No full text The current paper revisits the simplified two step kinetic model of pilling and identifies an implicit assumption made by previous workers in the application of the model to experimental data. Relaxing this assumption potentially allows a paradigm shift in the understanding of the pilling process with quite different interpretations and conclusions drawn from the analysis of experimental pilling data. In the case of wool knitwear, the original implicit assumption is tested experimentally and found to be invalid. A reanalysis of the pilling behavior of wool knitwear reveals new insights into the process. First, the mass of fiber associated with pilling is approximately twenty times larger than previously thought and pilling is the primary mechanism associated with fiber loss during the pilling test, compared to Williams’ conclusion that pilling accounted for only approximately 4% of the mass loss. Secondly, the non-pillable fiber loss fraction is both relatively small and is limited to the early stages of the pilling test, indicative of this being associated with a relatively small percentage of fiber that is not securely held in the structure (e.g. perhaps predominately a short fiber fraction). More generally, this reinterpretation significantly changes the relative importance of the two conceptual steps in the pilling process and so gives new insights regarding likely beneficial approaches for managing pilling. </jats:p
Bobbles and values: An ethnography of de-bobbling garments in postsocialist urban Romania
No full textBased on research on clothing consumption in a provincial Romanian town, this article focuses on bobbling (pilling) and on reflections on its appearances and progression. Bobbling is considered an index of a faulty or decaying materiality, and an index of usage and, possibly, carelessness and hardship. It limits an individual’s ability to project a desired self. It hints at an individual’s inability to present a renewed self. It not only disrupts a common process of value creation through the act of dressing, but also exposes a disputed process of value creation through the consumption of certain objects. It foregrounds a predisposition to equate the value of objects with the value of people. It affects a sense of self-worth. The author demonstrates that a preoccupation with bobbling reflects deeper concerns and frequent deliberations over value in postsocialist Romania
A study of atom and radical kinetics
No full textThis thesis describes the measurement of rate constants for gas phase reactions as a function of temperature (285 ≤ T/K ≤ 850) and pressure (48 ≤ P/Torr ≤ 700). One or both reactants was monitored directly in real time, using time–resolved resonance fluorescence (for atoms) and u.v. absorption (for radicals). Reactants were produced by exciplex laser flash photolysis. The technique was used to measure rate constants to high precision for the following reactions under the stated conditions: • H+O2+He->HO2+He and H+O2−→OH+O, for 800 ≤ T/K ≤ 850 and 100 ≤ P/Torr ≤ 259. A time–resolved study was performed at conditions close to criticality in the H2–O2 system. The competition between the two reactions affected the behaviour of the system after photolysis, and the rate constants were inferred from this behaviour. • H+C2H4+HeC2H5+He (T = 800 K, 97 ≤ P/Torr ≤ 600). The reactions were well into the fall–off region at all conditions studied. At 800 K, the system was studied under equilibrating conditions. The study provided values of the forward and reverse rate constants at high temperatures and enabled a test of a new theory of reversible unimolecular reactions. The controversial standard enthalpy of formation of ethyl, DH0f,298 (C2H5), was determined to be 120.2±0.8 kJ mol−1. Master Equation calculations showed that reversible and irreversible treatments of an equilibrating system should yield the same value for both thermal rate constants. • H+C3H5+He->C3H6+He (T = 291 K, 98 ≤ P/Torr ≤ 600) and O+C3H5 −→ products (286 ≤ T/K ≤ 500, 48 ≤ P/Torr ≤ 348). Both reactions were pressure–independent, and the latter was also independent of temperature with a value of (2.0±0.2) ×10−10 cm3 molecule−1 s−1. • H+C2H2+HeC2H3+He (298 ≤ T/K ≤ 845, 50 ≤ P/Torr ≤ 600). At 845 K, both reactions were in the fall–off region; rate constants were used to determine the standard enthalpy of formation of vinyl, ¢H0f,298 (C2H3), as 293±7 kJ mol−1. The value of this quantity has until recently been very controversial. • H+CH4 CH3+H2. The standard enthalpy of formation of methyl, DH0 f,298 (CH3), was determined by re–analysing existing kinetic data at T = 825 K and 875 K. A value of 144.7±1.1 kJ mol−1 was determined. Preliminary models were examined to describe the loss of reactants from the observation region by diffusion and pump–out. Such models, including diffusion and drift, should prove useful in describing the loss of reactive species in many slow–flow systems, enabling more accurate rate constants to be determined
Objective pilling evaluation of wool fabrics
No full textAn objective pilling evaluation method based on the multi-scale two-dimensional dual-tree complex wavelet transform and linear discriminant function of Bayes' Rule was developed. The surface fuzz and pills are identified from the high-frequency noise, fabric textures, fabric surface unevenness, and illuminative variation of a pilled fabric image by the two-dimensional dual-tree complex wavelet decomposition and reconstruction. The energies of the reconstructed subimages in six spatial orientations (±15º, ±45º, ±75º) are calculated as the elements of the pilling feature vector, whose dimension is reduced by principal component analysis. A linear discriminant function of Bayes' Rule was used as a classifier to establish classification rules among the five pilling grades. A new pilled sample with the same physical construction can then be automatically assigned to one of the five pilling grades by the classification rules. A general evaluation of the proposed method was conducted using the SM50 woven, non-woven, and SM54 knitted standard pilling test image sets. The results suggest that the new method can successfully establish classification rules among the five pilling grade groups for each of the three standard pilling test image sets and should be applicable to practical objective pilling evaluation
[Report to Chief J. E. Curry, by an unknown author #1]
No full textReport to Chief J. E. Curry, by an unknown author. The report contains a list of officers who gave depositions to the United States Attorney
[Report to Chief J. E. Curry, by an unknown author #2]
No full textReport to Chief J. E. Curry, by an unknown author. The report contains a list of officers who gave depositions to the United States Attorney
Effect of Fabric Color on visual perception of pilling
No full textBakalářská práce se zabývá vlivem barvy na subjektivní vnímaní žmolkovitosti, v rešeršní části je popsán vznik žmolků a faktory které jej ovlivňují. Dále jsou v rešerši podrobně popsány metody subjektivního a objektivního hodnocení žmolkovitosti, stav současné problematiky a shrnutí základních pojmů o barevnosti a jejím měření. Praktická část porovnává výsledky subjektivního a objektivního hodnocení. Výsledky obou metod jsou dále statisticky analyzovány a je zde hledána souvislost mezi subjektivním hodnocením respondentu a barvami hodnocených vzorků. Pro objektivní hodnocení byla využita metoda hodnocení pomocí gradientních polí a při subjektivním hodnocením byly stupně přiřazovány pomocí etalonů.The bachelor thesis deals with the influence of color on the subjective perception of pilling, in the theoretical part is described the formation of lints and the factors that influence it. In theoretical part are also presented methods of subjective and objective evaluation of pilling in detail, the state of the current issue and a summary of the basic concepts of color and its measurement. The practical part compares the results of subjective and objective evaluation. The results of both methods are further statistically analyzed and there is a connection between the subjective evaluation of the respondent and the colors of the evaluated samples. Gradient field evaluation method was used for objective evaluation and grades were assigned using standards in subjective evaluation
William and Albertina Pilling and Hormel and Louise Jolley
No full textWilliam and Albertina Pilling and their daughter Louise Pilling Jolley, along with her Husband, Harmell Jolley, enjoy a day of camping
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