Kent State University

About: Kent State University is a education organization based out in Kent, Ohio, United States. It is known for research contribution in the topics: Liquid crystal & Population. The organization has 10897 authors who have published 24607 publications receiving 720309 citations. The organization is also known as: Kent State & KSU.

Room temperature heliconical twist-bend nematic liquid crystal

Abstract: The nanostructured heliconical twist-bend nematic (Ntb) phase is a new condensed phase of matter with unique properties. Here we present the first example of an achiral hybrid bent-core liquid crystal trimer that at temperatures below the conventional N phase exhibits the Ntb phase from approximately 80 °C down through room temperature. The Ntb phase has a helical structure with a period of ~19 nm.

Real-time microbe detection based on director distortions around growing immune complexes in lyotropic chromonic liquid crystals

Abstract: We describe director distortions in the nematic liquid crystal (LC) caused by a spherical particle with tangential surface orientation of the director and show that light transmittance through the distorted region is a steep function of the particle's size. The effect allows us to propose a real-time microbial sensor based on a nontoxic lyotropic chromonic LC (LCLC) that detects and amplifies the presence of immune complexes. A cassette is filled with LCLC, antibody, and antigen-bearing particles. Small and isolated particles cause no macroscopic distortions of the LCLC. Upon antibody-antigen binding, the growing immune complexes distort the director and cause detectable optical transmittance between crossed polarizers.

Information resource planning: overcoming difficulties in identifying top management's objectives

Abstract: Twenty information resource managers employed by medium to large organizations in diverse industries were interviewed to discover their difficulties in learning top management's objectives and their techniques for overcoming these difficulties. The thirteen difficulties can be viewed as strategic formulation or strategy communication problems. The sixteen techniques can likewise be viewed as facilitating strategy formulation or strategy communication. The research revealed that participants in strategy formulation have no problem understanding top management's objectives while information resource managers who do not participate in strategy formulation do experience that problem.

Export of dissolved organic carbon from agricultural streams in Illinois, USA

Abstract: In the Midwestern USA, agricultural soils contain a large pool of organic carbon, yet little is known about carbon export in agriculturally-influenced streams. We studied DOC in three streams draining intensively farmed areas in Illinois, all draining Mollisols with large organic matter pools. Water quality samples were collected (weekly to daily) for 3–10 years and discharge was monitored continuously at each site. In-stream DOC concentrations ranged from 1–16 mg L−1, and high concentrations of DOC occurred both during floods and periods of low discharge. Among sites, average flow-weighted DOC concentrations varied from 3.1 to 3.9 mg L−1. DOC in the streams appeared to originate from two sources: allochthonous DOC from drainage of cropland in late winter through early summer, and autochthonous DOC from algal blooms in late summer through autumn. Inputs of allochthonous DOC were under hydrological control, with most of the allochthonous DOC entering streams during floods. Watershed export of DOC ranged from 3–23 kg ha−1 yr−1. The mass of C exported from watersheds as DOC was strongly related to water yield (r = 0.98), and by inference to precipitation. Bioassays indicated that on average 18% of the native DOC was bioavailable. Stream export of DOC from the agricultural watersheds was a small flux relative to the pool of soil organic C. However, increases in soil organic C could lead to greater inputs of DOC to streams and increased rates of microbial respiration.

Weight loss and wrestling training: effects on growth-related hormones

Abstract: Roemmich, James N., and Wayne E. Sinning. Weight loss and wrestling training: effects on growth-related hormones.J. Appl. Physiol. 82(6): 1760–1764, 1997.—Adolescent wrestlers (n = 9, 15.4 yr) and ...