Now showing items 21-40 of 2380

    • Mid-Infrared Trace Gas Sensor Technology Based on Intracavity Quartz-Enhanced Photoacoustic Spectroscopy 

      Wojtas, Jacek; Gluszek, Aleksander; Hudzikowski, Arkadiusz; Tittel, Frank K. (2017)
      The application of compact inexpensive trace gas sensor technology to a mid-infrared nitric oxide (NO) detectoion using intracavity quartz-enhanced photoacoustic spectroscopy (I-QEPAS) is reported. A minimum detection limit ...
    • Development of a multimodal foveated endomicroscope for the detection of oral cancer 

      Shadfan, Adam; Darwiche, Hawraa; Blanco, Jesus; Gillenwater, Ann; Richards-Kortum, Rebecca; Tkaczyk, Tomasz S. (2017)
      A multimodal endomicroscope was developed for cancer detection that combines hyperspectral and confocal imaging through a single foveated objective and a vibrating optical fiber bundle. Standard clinical examination has a ...
    • Nitrate radicals and biogenic volatile organic compounds: oxidation, mechanisms, and organic aerosol 

      Ng, Nga Lee; Brown, Steven S.; Archibald, Alexander T.; Atlas, Elliot; Cohen, Ronald C.; Crowley, John N.; Day, Douglas A.; Donahue, Neil M.; Fry, Juliane L.; Fuchs, Hendrik; Griffin, Robert J.; Guzman, Marcelo I.; Herrmann, Hartmut; Hodzic, Alma; Linuma, Yoshiteru; Jimenez, José L.; Kiendler-Scharr, Astrid; Lee, Ben H.; Luecken, Deborah J.; Mao, Jingqiu; McLaren, Robert; Mutzel, Anke; Osthoff, Hans D.; Ouyang, Bin; Picquet-Varrault, Benedicte; Platt, Ulrich; Pye, Havala O.T.; Rudich, Yinon; Schwantes, Rebecca H.; Shiraiwa, Manabu; Stutz, Jochen; Thornton, Joel A.; Tilgner, Andreas; Williams, Brent J.; Zaveri, Rahul A. (2017)
      Oxidation of biogenic volatile organic compounds (BVOC) by the nitrate radical (NO3) represents one of the important interactions between anthropogenic emissions related to combustion and natural emissions from the biosphere. ...
    • Predicting solvation free energies and thermodynamics in polar solvents and mixtures using a solvation-layer interface condition 

      Tabrizi, Amirhossein Molavi; Goossens, Spencer; Rahimi, Ali Mehdizadeh; Knepley, Matthew; Bardhan, Jaydeep P. (2017)
      We demonstrate that with two small modifications, the popular dielectric continuum model is capable of predicting, with high accuracy, ion solvation thermodynamics (Gibbs free energies, entropies, and heat capacities) in ...
    • Differences in BVOC oxidation and SOA formation above and below the forest canopy 

      Schulze, Benjamin C.; Wallace, Henry W.; Flynn, James H.; Lefer, Barry L.; Erickson, Matt H.; Jobson, B. Tom; Dusanter, Sebastien; Griffith, Stephen M.; Hansen, Robert F.; Stevens, Philip S.; VanReken, Timothy; Griffin, Robert J. (2017)
      Gas-phase biogenic volatile organic compounds (BVOCs) are oxidized in the troposphere to produce secondary pollutants such as ozone (O3), organic nitrates (RONO2), and secondary organic aerosol (SOA). Two coupled ...
    • Using molecular imaging to assess the delivery and infection of protease activated virus in animal model of myocardial infarction 

      Zhu, Banghe; Guenther, Caitlin; Kwon, Sunkuk; Sevick-Muraca, Eva M.; Suh, Junghae (2017)
      Cardiovascular diseases remain the greatest cause of death in the US and gene therapy has the potential to be an effective therapy. In this study, we demonstrated MMP-9 based protease-activatable virus (PAV) for selective ...
    • Bi-Phasic photocatalytic particles prepared by sequential layer depositions for water cleaning and purification 

      Gomez, Virginia; Rome, Bertrand; Barron, Andrew R.; Dunnill, Charles W. (2016)
      Bi-phasic photocatalyic particles have been prepared in the form of Janus-like structures (bi-phasic materials with two distinct properties on opposing sides of the particle) using a new synthetic procedure consisting of ...
    • A Probabilistic Framework for Deep Learning 

      Patel, Ankit B.; Nguyen, Tan; Baraniuk, Richard G. (2016)
      We develop a probabilistic framework for deep learning based on the Deep Rendering Mixture Model (DRMM), a new generative probabilistic model that explicitly capture variations in data due to latent task nuisance variables. ...
    • Generalized recovery algorithm for 3D super-resolution microscopy using rotating point spread functions 

      Shuang, Bo; Wang, Wenxiao; Shen, Hao; Tauzin, Lawrence J.; Flatebo, Charlotte; Chen, Jianbo; Moringo, Nicholas A.; Bishop, Logan D.C.; Kelly, Kevin F.; Landes, Christy F. (2016)
      Super-resolution microscopy with phase masks is a promising technique for 3D imaging and tracking. Due to the complexity of the resultant point spread functions, generalized recovery algorithms are still missing. We introduce ...
    • Accurate Quantification of Disease Markers in Human Serum Using Iron Oxide Nanoparticle-linked Immunosorbent Assay 

      Zhang, Linlin; Tong, Sheng; Zhou, Jun; Bao, Gang (2016)
      Accurate and reliable quantification of biomarkers in the blood is essential in disease screening and diagnosis. Here we describe an iron oxide nanoparticle (IONP)-linked immunosorbent assay (ILISA) for detecting biomolecules ...
    • Role of Gas Type on Foam Transport in Porous Media 

      Zeng, Yongchao; Farajzadeh, Rouhi; Eftekhari, Ali Akbar; Vincent-Bonnieu, Sebastien; Muthuswamy, Aarthi; Rossen, William R.; Hirasaki, George J.; Biswal, Sibani L. (2016)
      We present the results of an experimental investigation of the effect of gas type and composition on foam transport in porous media. Steady-state foam strengths with respect to three cases of distinct gases and two cases ...
    • Collective dynamics of processive cytoskeletal motors 

      McLaughlin, R. Tyler; Diehl, Michael R.; Kolomeisky, Anatoly B. (2016)
      Major cellular processes are supported by various biomolecular motors that usually operate together as teams. We present an overview of the collective dynamics of processive cytokeletal motor proteins based on recent ...
    • Surface-initiated growth of copper using isonicotinic acid-functionalized aluminum oxide surfaces 

      Gowenlock, Cathren E.; Gomez, Virginia; McGettrick, James D.; Andreoli, Enrico; Barron, Andrew R. (2016)
      Isonicotinate self-assembled monolayers (SAM) were prepared on alumina surfaces (A) using isonicotinic acid (iNA). These functionalized layers (iNA-A) were used for the seeded growth of copper films (Cu-iNA-A) by hydrazine ...
    • Purely wavelength- and amplitude-modulated quartz-enhanced photoacoustic spectroscopy 

      Patimisco, Pietro; Sampaolo, Angelo; Bidaux, Yves; Bismuto, Alfredo; Scott, Marshall; Jiang, James; Muller, Antoine; Faist, Jerome; Tittel, Frank K.; Spagnolo, Vincenzo (2016)
      We report here on a quartz-enhanced photoacoustic (QEPAS) sensor employing a quantum cascade laser (QCL) structure capable of operating in a pure amplitude or wavelength modulation configuration. The QCL structure is ...
    • Stability of High-Density Two-Dimensional Excitons against a Mott Transition in High Magnetic Fields Probed by Coherent Terahertz Spectroscopy 

      Zhang, Qi; Wang, Yongrui; Gao, Weilu; Long, Zhongqu; Watson, John D.; Manfra, Michael J.; Belyanin, Alexey; Kono, Junichiro (2016)
      We have performed time-resolved terahertz absorption measurements on photoexcited electron-hole pairs in undoped GaAs quantum wells in magnetic fields. We probed both unbound- and bound-carrier responses via cyclotron ...
    • Asymmetric diffraction from two-component optical gratings made of passive and lossy materials 

      Liang, Guanquan; Abouraddy, Ayman; Christodoulides, Demetrios; Thomas, Edwin L. (2016)
      Diffraction with asymmetric enhancement and suppression, and alternating contrast for symmetric diffraction orders is demonstrated from planar two-component optical gratings made of passive/lossy materials. Simulations ...
    • A metal-free electrocatalyst for carbon dioxide reduction to multi-carbon hydrocarbons and oxygenates 

      Wu, Jingjie; Ma, Sichao; Sun, Jing; Gold, Jake I.; Tiwary, ChandraSekhar; Kim, Byoungsu; Zhu, Lingyang; Chopra, Nitin; Odeh, Ihab N.; Vajtai, Robert; Yu, Aaron Z.; Luo, Raymond; Lou, Jun; Ding, Guqiao; Kenis, Paul J.A.; Ajayan, Pulickel M. (2016)
      Electroreduction of carbon dioxide into higher-energy liquid fuels and chemicals is a promising but challenging renewable energy conversion technology. Among the electrocatalysts screened so far for carbon dioxide reduction, ...
    • ITD assembler: an algorithm for internal tandem duplication discovery from short-read sequencing data 

      Rustagi, Navin; Hampton, Oliver A; Li, Jie; Xi, Liu; Gibbs, Richard A; Plon, Sharon E; Kimmel, Marek; Wheeler, David A (2016)
      Abstract Background Detection of tandem duplication within coding exons, referred to as internal tandem duplication (ITD), remains challenging due to inefficiencies in ...
    • Mid infrared quantum cascade laser operating in pure amplitude modulation for background-free trace gas spectroscopy 

      Bidaux, Yves; Bismuto, Alfredo; Patimisco, Pietro; Sampaolo, Angelo; Gresch, Tobias; Strubi, Gregory; Blaser, Stéphane; Tittel, Frank K.; Spagnolo, Vincenzo; Muller, Antoine; Faist, Jérôme (2016)
      We present a single mode multi-section quantum cascade laser source composed of three different sections: master oscillator, gain and phase section. Non-uniform pumping of the QCL’s gain reveals that the various laser ...
    • Critical Uncertainties and Gaps in the Environmental- and Social-Impact Assessment of the Proposed Interoceanic Canal through Nicaragua 

      Huete-Pérez, Jorge A.; Ortega-Hegg, Manuel; Urquhart, Gerald R.; Covich, Alan P.; Vammen, Katherine; Rittmann, Bruce E.; Miranda, Julio C.; Espinoza-Corriols, Sergio; Acevedo, Adolfo; Acosta, María L.; Gómez, Juan P.; Brett, Michael T.; Hanemann, Michael; Härer, Andreas; Incer-Barquero, Jaime; Joyce, Frank J.; Lauer, J. Wesley; Maes, Jean Michel; Tomson, Mason B.; Meyer, Axel; Montenegro-Guillén, Salvador; Whitlow, W. Lindsay; Schnoor, Jerald L.; Alvarez, Pedro J.J. (2016)
      The proposed interoceanic canal will connect the Caribbean Sea with the Pacific Ocean, traversing Lake Nicaragua, the major freshwater reservoir in Central America. If completed, the canal would be the largest infrastruc ...