Automated water monitor system field demonstration test report. Volume 1: Executive summary

A system that performs water quality monitoring on-line and in real time much as it would be done in a spacecraft, was developed and demonstrated. The system has the capability to determine conformance to high effluent quality standards and to increase the potential for reclamation and reuse of water

Automated water monitor system field demonstration test report. Volume 2: Technical summary

The NASA Automatic Water Monitor System was installed in a water reclamation facility to evaluate the technical and cost feasibility of producing high quality reclaimed water. Data gathered during this field demonstration test are reported

Cooling Dynamics of Photoexcited Carriers in Si Studied by Using Optical Pump and Terahertz Probe Spectroscopy

We investigated the photoexcited carrier dynamics in Si by using optical pump and terahertz probe spectroscopy in an energy range between 2 meV and 25 meV. The formation dynamics of excitons from unbound e-h pairs was studied through the emergence of the 1s-2p transition of excitons at 12 meV (3 THz). We revealed the thermalization mechanism of the photo-injected hot carriers (electrons and holes) in the low temperature lattice system by taking account of the interband and intraband scattering of carriers with acoustic and optical phonons. The overall cooling rate of electrons and holes was numerically calculated on the basis of a microscopic analysis of the phonon scattering processes, and the results well account for the experimentally observed carrier cooling dynamics. The long formation time of excitons in Si after the above-gap photoexcitation is reasonably accounted for by the thermalization process of photoexcited carriers.Comment: 8 pages, 8 figures, to be published in Phys. Rev.

Microwave conductivity of YBa2_2Cu3_3O6.99_{6.99} including inelastic scattering

The fluctuation spectrum responsible for the inelastic scattering in YBa$_2$Cu$_3$O$_{6.99}$ which was recently determined from consideration of the in-plane optical conductivity in the infrared, is used to calculate the temperature dependence of the microwave conductivity at several measured frequencies. Reasonable overall agreement can only be achieved if, in addition, some impurity scattering is included within a model potential intermediate between weak (Born) and strong (unitary) limit.Comment: 15 pages, 5 figures accepted for publication in Phys. Rev.

Genomic insights into the Ixodes scapularis tick vector of Lyme disease

Citation: Gulia-Nuss, M., Nuss, A. B., Meyer, J. M., Sonenshine, D. E., Roe, R. M., Waterhouse, R. M., . . . Hill, C. A. (2016). Genomic insights into the Ixodes scapularis tick vector of Lyme disease. Nature Communications, 7, 13. doi:10.1038/ncomms10507Additional Authors: Koren, S.;Hostetler, J. B.;Thiagarajan, M.;Joardar, V. S.;Hannick, L. I.;Bidwell, S.;Hammond, M. P.;Young, S.;Zeng, Q. D.;Abrudan, J. L.;Almeida, F. C.;Ayllon, N.;Bhide, K.;Bissinger, B. W.;Bonzon-Kulichenko, E.;Buckingham, S. D.;Caffrey, D. R.;Caimano, M. J.;Croset, V.;Driscoll, T.;Gilbert, D.;Gillespie, J. J.;Giraldo-Calderon, G. I.;Grabowski, J. M.;Jiang, D.;Khalil, S. M. S.;Kim, D.;Kocan, K. M.;Koci, J.;Kuhn, R. J.;Kurtti, T. J.;Lees, K.;Lang, E. G.;Kennedy, R. C.;Kwon, H.;Perera, R.;Qi, Y. M.;Radolf, J. D.;Sakamoto, J. M.;Sanchez-Gracia, A.;Severo, M. S.;Silverman, N.;Simo, L.;Tojo, M.;Tornador, C.;Van Zee, J. P.;Vazquez, J.;Vieira, F. G.;Villar, M.;Wespiser, A. R.;Yang, Y. L.;Zhu, J. W.;Arensburger, P.;Pietrantonio, P. V.;Barker, S. C.;Shao, R. F.;Zdobnov, E. M.;Hauser, F.;Grimmelikhuijzen, C. J. P.;Park, Y.;Rozas, J.;Benton, R.;Pedra, J. H. F.;Nelson, D. R.;Unger, M. F.;Tubio, J. M. C.;Tu, Z. J.;Robertson, H. M.;Shumway, M.;Sutton, G.;Wortman, J. R.;Lawson, D.;Wikel, S. K.;Nene, V. M.;Fraser, C. M.;Collins, F. H.;Birren, B.;Nelson, K. E.;Caler, E.;Hill, C. A.Ticks transmit more pathogens to humans and animals than any other arthropod. We describe the 2.1 Gbp nuclear genome of the tick, Ixodes scapularis (Say), which vectors pathogens that cause Lyme disease, human granulocytic anaplasmosis, babesiosis and other diseases. The large genome reflects accumulation of repetitive DNA, new lineages of retro-transposons, and gene architecture patterns resembling ancient metazoans rather than pancrustaceans. Annotation of scaffolds representing similar to 57% of the genome, reveals 20,486 protein-coding genes and expansions of gene families associated with tick-host interactions. We report insights from genome analyses into parasitic processes unique to ticks, including host 'questing', prolonged feeding, cuticle synthesis, blood meal concentration, novel methods of haemoglobin digestion, haem detoxification, vitellogenesis and prolonged off-host survival. We identify proteins associated with the agent of human granulocytic anaplasmosis, an emerging disease, and the encephalitis-causing Langat virus, and a population structure correlated to life-history traits and transmission of the Lyme disease agent

Kinetic Inductance and Penetration Depth of Thin Superconducting Films Measured by THz Pulse Spectroscopy

We measure the transmission of THz pulses through thin films of YBCO at temperatures between 10K and 300K. The pulses possess a useable bandwidth extending from 0.1 -- 1.5 THz (3.3 cm^-1 -- 50 cm^-1). Below T_c we observe pulse reshaping caused by the kinetic inductance of the superconducting charge carriers. From transmission data, we extract values of the London penetration depth as a function of temperature, and find that it agrees well with a functional form (\lambda(0)/\lambda(T))^2 = 1 - (T/T_c)^{\alpha}, where \lambda(0) = 148 nm, and \alpha = 2. *****Figures available upon request*****Comment: 7 Pages, LaTe

Neutron scattering in a d_{x^2-y^2}-wave superconductor with strong impurity scattering and Coulomb correlations

We calculate the spin susceptibility at and below T_c for a d_{x^2-y^2}-wave superconductor with resonant impurity scattering and Coulomb correlations. Both the impurity scattering and the Coulomb correlations act to maintain peaks in the spin susceptibility, as a function of momentum, at the Brillouin zone edge. These peaks would otherwise be suppressed by the superconducting gap. The predicted amount of suppression of the spin susceptibility in the superconducting state compared to the normal state is in qualitative agreement with results from recent magnetic neutron scattering experiments on La_{1.86}Sr_{0.14}CuO_4 for momentum values at the zone edge and along the zone diagonal. The predicted peak widths in the superconducting state, however, are narrower than those in the normal state, a narrowing which has not been observed experimentally.Comment: 24 pages (12 tarred-compressed-uuencoded Postscript figures), REVTeX 3.0 with epsf macros, UCSBTH-94-1

Supplementary data for article: Opsenica, I.; Tot, M.; Gomba, L.; Nuss, J. E.; Sciotti, R. J.; Bavari, S.; Burnett, J. C.; Šolaja, B. A. 4-Amino-7-Chloroquinolines: Probing Ligand Efficiency Provides Botulinum Neurotoxin Serotype A Light Chain Inhibitors with Significant Antiprotozoal Activity. Journal of Medicinal Chemistry 2013, 56 (14), 5860–5871. https://doi.org/10.1021/jm4006077

Supporting information for: [https://doi.org/10.1021/jm4006077]Related to published version: [http://cherry.chem.bg.ac.rs/handle/123456789/1381

Design and performance of a Collimated Beam Projector for telescope transmission measurement using a broadband light source

Type Ia supernovae are the most direct cosmological probe to study dark energy in the recent Universe, for which the photometric calibration of astronomical instruments remains one major source of systematic uncertainties. To address this, recent advancements introduce Collimated Beam Projectors (CBP), aiming to enhance calibration by precisely measuring a telescope's throughput as a function of wavelength. This work describes the performance of a prototype portable CBP. The experimental setup consists of a broadband Xenon light source replacing a more customary but much more demanding high-power laser source, coupled with a monochromator emitting light inside an integrating sphere monitored with a photodiode and a spectrograph. Light is injected at the focus of the CBP telescope projecting a collimated beam onto a solar cell whose quantum efficiency has been obtained by comparison with a NIST-calibrated photodiode. The throughput and signal-to-noise ratio achieved by comparing the photocurrent signal in the CBP photodiode to the one in the solar cell are computed. We prove that the prototype, in its current state of development, is capable of achieving 1.2 per cent and 2.3 per cent precision on the integrated g and r bands of the ZTF photometric filter system respectively, in a reasonable amount of integration time. Central wavelength determination accuracy is kept below $\sim$ {0.91} nm and $\sim$ {0.58} nm for g and r bands. The expected photometric uncertainty caused by filter throughput measurement is approximately 5 mmag on the zero-point magnitude. Several straightforward improvement paths are discussed to upgrade the current setup.Comment: submitted to RAS Techniques & Instruments (RASTI