Now showing items 1464-1483 of 5032

    • Fabrication and characterization of multiscale electrospun scaffolds for cartilage regeneration 

      (2013)
      Recently, scaffolds for tissue regeneration purposes have been observed to utilize nanoscale features in an effort to reap the cellular benefits of scaffold features resembling extracellular matrix (ECM) components. However, one complication surrounding electrospun nanofibers is limited cellular infiltration. One method to ameliorate this negative ...
    • Fabrication and Mechanical Evaluation of Anatomically-Inspired Quasilaminate Hydrogel Structures with Layer-Specific Formulations 

      (2012)
      A major tissue engineering challenge is the creation of multilaminate scaffolds with layer-specific mechanical properties representative of native tissues, such as heart valve leaflets, blood vessels, and cartilage. For this purpose, poly(ethylene glycol) diacrylate (PEGDA) hydrogels are attractive materials due to their tunable mechanical and biological ...
    • Fabrication of optical components using a consumer-grade lithographic printer 

      Berglund, Gregory D.; Tkaczyk, Tomasz S.; Tkaczyk, Tomasz S. (2019)
      The ability to 3D print optical elements will greatly expand the accessibility of optical fabrication. Here, we report on two fabrication techniques for plano-convex lens files using a consumer-grade lithographic printer. Lenses were post-processed using a simple spin coating technique with the resin used in the printing process or by curing directly ...
    • FaceEngage: Robust Estimation of Gameplay Engagement from User-Contributed (YouTube) Videos 

      Chen, Xu; Niu, Li; Veeraraghavan, Ashok; Sabharwal, Ashutosh (2022)
      Measuring user engagement in interactive tasks can facilitate numerous applications toward optimizing user experience, ranging from eLearning to gaming. However, a significant challenge is the lack of non-contact engagement estimation methods that are robust in unconstrained environments. We present FaceEngage, a non-intrusive engagement estimator ...
    • Facemasks and ferrous metallurgy: improving gasification reactivity of low-volatile coals using waste COVID-19 facemasks for ironmaking application 

      Stewart, Daniel J. C.; Fisher, Lucy V.; Warwick, Michael E. A.; Thomson, David; Barron, Andrew R. (2022)
      The global pandemic response to COVID-19 has led to the generation of huge volumes of unrecyclable plastic waste from single use disposable face coverings. Rotary hearth furnaces can be used to recover Zn and Fe from non-recyclable steelmaking by-product dusts, and waste plastic material such as facemasks could be utilized as a supplementary reductant ...
    • Facile Graphene Oxide Preparation by Microwave-Assisted Acid Method 

      Viana, Marcelo M.; Lima, Meiriane C.F.S.; Forsythe, Jerimiah C.; Gangoli, Varun S.; Cho, Minjung; (2015)
      Few-layered graphene oxide (GO) was prepared using a fast and energy-saving method by microwave-assisted acid technique. The oxygenated groups existing on the GO surface were determined using UV-Vis, X-ray photoelectron and Fourier-transform infrared spectroscopies. An oxygenated group percentage of 30% in mass for the GO was observed by thermogravimetric ...
    • Facile one-pot synthesis of triphenylbismuth (V) bis(carboxylate) complexes 

      (2014)
      Triphenylbismuth(V) bis(carboxylates), Ph3Bi(O2CR)2 (R = 5-Br-2-OH-C6H3- (1), 2-OH-C6H4-(2), 2,6-(OH)2-C6H3- (3); 3-Me-2-NH2-C6H3- (4); Ph- (5) and Me- (6)) were obtained from the reaction of triphenylbismuth with hydrogen peroxide and excess carboxylic acid in wet 2-propanol. The synthesis avoids the use of halogens as oxidants and the products ...
    • Facile Synthesis and Catalysis of Pure-Silica and Heteroatom LTA 

      Boal, Ben W.; Schmidt, Joel E.; Deimund, Mark A.; Deem, Michael W.; Henling, Lawrence M.; (2015)
      Zeolite A (LTA) has many large-scale uses in separations and ion exchange applications. Because of the high aluminum content and lack of high-temperature stability, applications in catalysis, while highly desired, have been extremely limited. Herein, we report a robust method to prepare pure-silica, aluminosilicate (product Si/Al = 12–42), and ...
    • Facilitation and Competition among Invasive Plants: A Field Experiment with Alligatorweed and Water Hyacinth 

      Wundrow, Emily J.; Carrillo, Juli; Gabler, Christopher A.; Horn, Katherine C.; Siemann, Evan (2012)
      Ecosystems that are heavily invaded by an exotic species often contain abundant populations of other invasive species. This may reflect shared responses to a common factor, but may also reflect positive interactions among these exotic species. Armand Bayou (Pasadena, TX) is one such ecosystem where multiple species of invasive aquatic plants are ...
    • Facilitation of DNA loop formation by protein–DNA non-specific interactions 

      Shin, Jaeoh; Kolomeisky, Anatoly B.; Center for Theoretical Biological Physics (2019)
      Complex DNA topological structures, including polymer loops, are frequently observed in biological processes when protein molecules simultaneously bind to several distant sites on DNA. However, the molecular mechanisms of formation of these systems remain not well understood. Existing theoretical studies focus only on specific interactions between ...
    • Facing facts about deliberate practice 

      Hambrick, David Z.; Altmann, Erik M.; Oswald, Frederick L.; Meinz, Elizabeth J.; Gobet, Fernand (2014)
    • A factorial analysis of the combined effects of hydrogel fabrication parameters on the in vitro swelling and degradation of oligo(poly(ethylene glycol) fumarate) hydrogels 

      Lam, Johnny; Kim, Kyobum; Lu, Steven; Tabata, Yasuhiko; Scott, David W.; (2014)
      In this study, a full factorial approach was used to investigate the effects of poly(ethylene glycol) (PEG) molecular weight (MW; 10,000 vs. 35,000 nominal MW), crosslinker-to-macromer carbon–carbon double bond ratio (DBR; 40 vs. 60), crosslinker type (PEG-diacrylate (PEGDA) vs. N,N′-methylene bisacrylamide (MB)), crosslinking extent of incorporated ...
    • Factors affecting ambulance utilization for asthma attack treatment: understanding where to target interventions 

      (2015)
      Objectives: Asthma is a serious, sometimes fatal condition, in which attacks vary in severity, potentially requiring emergency medical services (EMS) ambulance treatment. A portion of asthma attacks requiring EMS ambulance treatment may be prevented with improved education and access to care. The aim of this study was to identify areas of the city ...
    • Factors affecting patient outcome in primary cutaneous aspergillosis 

      Tatara, Alexander M.; Mikos, Antonios G.; Kontoyiannis, Dimitrios P. (2016)
      Primary cutaneous aspergillosis (PCA) is an uncommon infection of the skin. There is a paucity of organized literature regarding this entity in regard to patient characteristics, associated Aspergillus species, and treatment modalities on outcome (disease recurrence, disease dissemination, and mortality). We reviewed all published reports of PCA from ...
    • Failure of the Hasse Principle on General K3 Surfaces 

      (2013)
      We show that transcendental elements of the Brauer group of an algebraic surface can obstruct the Hasse principle. We construct a general K3 surface X of degree 2 over Q, together with a two-torsion Brauer class that is unramified at every finite prime, but ramifies at real points of X. Motivated by Hodge theory, the pair (X, ) is constructed from ...
    • Failure to Burrow and Tunnel Reveals Roles forᅠjim lovellᅠin the Growth and Endoreplication of the Drosophila Larval Tracheae 

      Zhou, Fanli; Qiang, Karen M.; Beckingham, Kathleen M. (2016)
      The Drosophila protein Jim Lovell (Lov) is a putative transcription factor of the BTB/POZ (Bric- a-Brac/Tramtrack/Broad/ᅠPox virus andᅠZinc finger) domain class that is expressed in many elements of the developing larval nervous system. It has roles in innate behaviors such as larval locomotion and adult courtship. In performing tissue-specific ...
    • Failures to Compute 

      Mody, Cyrus CM (2013)
    • Fair Equality of Opportunity Critically Reexamined: The Family and the Sustainability of Health Care Systems 

      Engelhardt, H. Tristram Jr (2012)
      A complex interaction of ideological, financial, social, and moral factors makes the financial sustainability of health care systems a challenge across the world. One difficulty is that some of the moral commitments of some health care systems collide with reality. In particular, commitments to equality in access to health care and to fair equality ...
    • Fairness Incentives for Myopic Agents 

      Kannan, Sampath; Kearns, Michael; Morgenstern, Jamie; Pai, Mallesh; Roth, Aaron; (2017)
      We consider settings in which we wish to incentivize myopic agents (such as Airbnb landlords, who may emphasize short-term profits and property safety) to treat arriving clients fairly, in order to prevent overall discrimination against individuals or groups. We model such settings in both classical and contextual bandit models in which the myopic ...
    • Families, Resources, and Adult Health: Where Do Sexual Minorities Fit? 

      Denney, Justin T.; Gorman, Bridget K.; Barrera, Cristina B. (2013)
      Extensive research documents the relevance of families and socioeconomic resources to health. This paper extends that research to sexual minorities, using twelve years of the National Health Interview Survey (N = 460,459) to examine self-evaluations of health among male and female adults living in same sex and opposite sex relationships. Adjusting ...