2,457 research outputs found

    Absorbent product and articles made therefrom

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    A multilayer absorbent product for use in contact with the skin to absorb fluids is described. The product has a water pervious facing layer for contacting the skin, and a first fibrous wicking layer overlaying the water pervious layer. A first container section is defined by inner and outer layers of a water pervious wicking material in between a first absorbent mass and a second container section defined by inner and outer layers of a water pervious wicking material between what is disposed a second absorbent mass, and a liquid impermeable/gas permeable layer overlaying the second fibrous wicking layer

    Absorbent product to absorb fluids

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    A multi-layer absorbent product for use in contact with the skin to absorb fluids is discussed. The product utilizes a water pervious facing layer for contacting the skin, overlayed by a first fibrous wicking layer, the wicking layer preferably being of the one-way variety in which fluid or liquid is moved away from the facing layer. The product further includes a first container section defined by inner and outer layer of a water pervious wicking material between which is disposed a first absorbent mass. A second container section defined by inner and outer layers between which is disposed a second absorbent mass and a liquid impermeable/gas permeable layer. Spacesuit applications are discussed

    Perspectives on Teachers\u27 Work in One Ontario Remote First Nation Community

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    The nature of teachers’ work in one northern Ontario remote First Nation community is explored through three articles that address the following questions: Why do teachers work in the North? What contributes to teacher retention and attrition? And, how do teachers navigate the professional and personal boundaries of their lives as teachers in the North? The articles are based on a case study of teachers’ work in one community and use data collected through interviews with 15 teachers, focus groups with sub-sets of those teachers, and observations collected as field notes. Article 1, Teacher attrition in a Northern Ontario remote First Nation community: A narrative re-storying, explores the shared experiences of teachers as they discuss the professional and personal factors that contribute to their retention and attrition. Article 2, Teaching and fear: Teachers’ work in a Northern Ontario remote First Nation community, unpacks how the emotion of fear mediates teachers’ experiences within a colonizing system. Article 3, Understanding roles and relationships: Teachers’ work in a Northern Ontario remote First Nation community, explains how teachers negotiate their roles and relationships with students, other teachers, families, and the community and uses the heuristic categories of pedestal people, transitioners, relationship builders and community integrators to explore the range of approaches teachers employ. Although the focus of each article is distinct, the general nature of teachers’ work was found to be deeply marked by complexity because of the relational conditions of their work. To be understood, the work of teachers must be positioned within discourses of power, colonization, the ongoing legacy of residential schools, and current decolonizing efforts. Practice-based policy suggestions such as mentorship and orientation programming, professional learning circles, and community-based activities are made to address challenges identified by the research. In addition, calls for equitable funding, continuing or multi-year teacher contracts, and improved teacher education are identified as necessary to address systemic concerns

    Symposium: The Americans with Disabilities Act - Introductory Comments

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    Each of the articles included in this symposium summarizes the ADA and details the particular provisions of the Act which pertain to its thesis. Therefore, I will only briefly outline the Act\u27s major provisions and implications for the purposes of this introductory discussion

    Symposium: The Americans with Disabilities Act - Introductory Comments

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    Each of the articles included in this symposium summarizes the ADA and details the particular provisions of the Act which pertain to its thesis. Therefore, I will only briefly outline the Act\u27s major provisions and implications for the purposes of this introductory discussion

    Spiritual vs. Religious: Perspectives from Today\u27s Undergraduate Catholics

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    Contemporary American college students simultaneously express both increased interest in spirituality and declining interest in traditional religion. Recent research recognizes the trend of young adults separating spirituality from religion, but utilizes varied definitions of each term developed by the researchers. This study asks students directly whether and how they differentiate spirituality from religion. The purpose of this article is to examine how undergraduate Catholics attending a Catholic university conceive of themselves as spiritual or religious and the differences, if any, between the two descriptors. The perspectives of 20 young adults of various programs of study and self-described degrees of spirituality and religiousness are herein explored

    Tip-gating Effect in Scanning Impedance Microscopy of Nanoelectronic Devices

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    Electronic transport in semiconducting single-wall carbon nanotubes is studied by combined scanning gate microscopy and scanning impedance microscopy (SIM). Depending on the probe potential, SIM can be performed in both invasive and non-invasive mode. High-resolution imaging of the defects is achieved when the probe acts as a local gate and simultaneously an electrostatic probe of local potential. A class of weak defects becomes observable even if they are located in the vicinity of strong defects. The imaging mechanism of tip-gating scanning impedance microscopy is discussed.Comment: 11 pages, 3 figures, to be published in Appl. Phys. Let

    Carbon nanotubes as a tip calibration standard for electrostatic scanning probe microscopies

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    Scanning Surface Potential Microscopy (SSPM) is one of the most widely used techniques for the characterization of electrical properties at small dimensions. Applicability of SSPM and related electrostatic scanning probe microscopies for imaging of potential distributions in active micro- and nanoelectronic devices requires quantitative knowledge of tip surface contrast transfer. Here we demonstrate the utility of carbon-nanotube-based circuits to characterize geometric properties of the tip in the electrostatic scanning probe microscopies (SPM). Based on experimental observations, an analytical form for the differential tip-surface capacitance is obtained.Comment: 14 pages, 4 figure

    Collaboration Process Patterns and Integrated Assessment in E-Learning Environments

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    Collaboration activities are particularly difficult in e-learning environments, where the intention is to provide students with valuable learning experiences through working in teams and sharing a common goal. These activities are often conducted in an ad hoc manner with lack of proper assessment and control over learning outcomes. In this article, we propose the idea of enhancing the effectiveness of collaborative e-learning practices through structured collaborative e-learning processes and integrated assessment mechanisms. The structuring of collaboration processes is suggested through the application of successful collaboration process patterns, while the integrated assessment is suggested through assessing not just the end learning outcomes, but also the process leading to those learning outcomes. These structured templates are regarded as collaborative e-learning templates (CET) that may be instantiated using common collaboration tools to generate desired collaboration patterns among elearners. Thus, the research objective involves improving the learning outcomes as well as the collaboration process dynamics through novel application of collaboration process patterns and integrated assessment techniques. This research is currently in progress and we are conducting a pilot study to test the feasibility of the proposed ideas

    Imaging mechanism of piezoresponse force microscopy of ferroelectric surfaces

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    In order to determine the origin of image contrast in piezoresponse force microscopy (PFM), analytical descriptions of the complex interactions between a small tip and ferroelectric surface are derived for several sets of limiting conditions. Image charge calculations are used to determine potential and field distributions at the tip-surface junction between a spherical tip and an anisotropic dielectric half plane. Methods of Hertzian mechanics are used to calculate the response amplitude in the electrostatic regime. In the electromechanical regime, the limits of strong (classical) and weak (field-induced) indentation are established and the relative contributions of electroelastic constants are determined. These results are used to construct ‘‘piezoresponse contrast mechanism maps’’ that correlate the imaging conditions with the PFM contrast mechanisms. Conditions for quantitative PFM imaging are set forth. Variable-temperature PFM imaging of domain structures in BaTiO3 and the temperature dependence of the piezoresponse are compared with Ginzburg-Devonshire theory. An approach to the simultaneous acquisition of piezoresponse and surface potential images is proposed
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