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  • 1
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    A new type of jarosite deposit on Mars: Evidence for past glaciation in Valles Marineris? (2014)
    Geological Society of America (GSA)
    In: Geology
    Details
    Publication Date: 2014-11-04
    Description: Acid-sulfate minerals such as jarosite are often used as indicators of environmental conditions on Mars. These minerals form in a diverse set of environments on Earth; however, all known Martian jarosite deposits are most likely evaporative, from evaporation of either groundwater or ponded water. Here, we use the Compact Reconnaissance Imaging Spectrometer for Mars and High-Resolution Imaging Science Experiment to report a new jarosite deposit along the southern wall of Ius Chasma. The morphology and geologic context of the Ius deposit are unique on Mars, and difficult to explain with an evaporative or groundwater mechanism. We propose instead that it was deposited along the margins of a past glacier. Such acid-ice interactions would be similar to those reported along the margins of Svalbard glaciers (arctic Norway), and would represent a new style of acid-sulfate formation on Mars.
    Print ISSN: 0091-7613
    Electronic ISSN: 1943-2682
    Topics: Geosciences
    Published by Geological Society of America (GSA)
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  • 2
    Electronic Resource
    Electronic Resource
    Disinfection of Sewage Effluents: The Jersey Experience (1993)
    Oxford, UK : Blackwell Publishing Ltd
    Water and environment journal 7 (1993), S. 0 
    Details
    ISSN: 1747-6593
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: About 35 years ago the island of Jersey in the Channel Islands set about rationalizing and modernizing its sewage-treatment operations. Treatment was carried out in one central, advanced sewagetreatment works producing a Royal Commission effluent which received nominal dilution in a small stream before discharging into the sea in one of the foremost bathing areas on the island.In 1989, a thorough investigation was carried out on the options to secure an environmentally acceptable solution to effluent disposal. The investigation concluded that disinfection, in combination with a change to the outfall discharge point, offered the most cost-effective solution. Alternative disinfection techniques were identified, which recognized the nature and sensitivity of the receiving waters and the limited space available on the site. Only ultraviolet disinfection was suitable.An ultraviolet disinfection system depends on the exposure of the micro-organisms causing disease to their germicidal wavelength. Light of this wavelength (about 253.7 nanometres) is absorbed by the nucleic acids in the cell which damages or rearranges the genetic information, effectively rendering the cell unable to replicate and resulting in the death of the cell.In over 300 installations in North America the system has proven to be reliable, simple, economic and, above all, environmentally acceptable.An ultraviolet disinfection system is currently being installed at Bellozanne, Jersey.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1747-6593.1993.tb00876.x
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  • 3
    Electronic Resource
    Electronic Resource
    Thermal Drying of Sewage Sludge (1993)
    Oxford, UK : Blackwell Publishing Ltd
    Water and environment journal 7 (1993), S. 0 
    Details
    ISSN: 1747-6593
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Notes: Over the next decade the UK will experience significant, imposed changes in the quantity of sewage sludge produced and in the means available for its disposal. Existing practices are being reappraised and new technologies are being explored to cope with a predicted 40% increase in the quantity for disposal. Thermal drying of sludge undoubtedly has a role to play in coping with this demand.The two principal process types, i.e. direct and indirect heat application, are appraised in depth and a comparison is drawn. A case study is identified to examine the energy demands of the process, including the potential for heat recovery and for resource reuse. The environmental impact of a typical process is also examined.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1747-6593.1993.tb00843.x
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  • 4
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    Polymer Coatings in 3D-Printed Fluidic Device Channels for Improved Cellular Adherence Prior to Electrical Lysis (2015)
    American Chemical Society (ACS)
    Details
    Publication Date: 2015-05-30
    Description: Analytical Chemistry DOI: 10.1021/acs.analchem.5b01202
    Print ISSN: 0003-2700
    Electronic ISSN: 1520-6882
    Topics: Chemistry and Pharmacology
    Published by American Chemical Society (ACS)
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  • 5
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    Remote Sensing, Vol. 11, Pages 1866: Fast and Effective Techniques for LWIR Radiative Transfer Modeling: A Dimension-Reduction Approach (2019)
    MDPI
    Details
    Publication Date: 2019
    Description: The increasing spatial and spectral resolution of hyperspectral imagers yields detailed spectroscopy measurements from both space-based and airborne platforms. These detailed measurements allow for material classification, with many recent advancements from the fields of machine learning and deep learning. In many scenarios, the hyperspectral image must first be corrected or compensated for atmospheric effects. Radiative Transfer (RT) computations can provide look up tables (LUTs) to support these corrections. This research investigates a dimension-reduction approach using machine learning methods to create an effective sensor-specific long-wave infrared (LWIR) RT model. The utility of this approach is investigated emulating the Mako LWIR hyperspectral sensor ( Δ λ ≃ 0.044   μ m , Δ ν ˜ ≃ 3.9 cm − 1 ). This study employs physics-based metrics and loss functions to identify promising dimension-reduction techniques and reduce at-sensor radiance reconstruction error. The derived RT model shows an overall root mean square error (RMSE) of less than 1 K across reflective to emissive grey-body emissivity profiles.
    Electronic ISSN: 2072-4292
    Topics: Architecture, Civil Engineering, Surveying , Geography
    Published by MDPI
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  • 6
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    Nature reduces rumination and sgPFC activation [Psychological and Cognitive Sciences] (2015)
    National Academy of Sciences
    Details
    Publication Date: 2015-07-15
    Description: Urbanization has many benefits, but it also is associated with increased levels of mental illness, including depression. It has been suggested that decreased nature experience may help to explain the link between urbanization and mental illness. This suggestion is supported by a growing body of correlational and experimental evidence, which...
    Print ISSN: 0027-8424
    Electronic ISSN: 1091-6490
    Topics: Biology , Medicine , Natural Sciences in General
    Published by National Academy of Sciences
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  • 7
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    Rabi Flopping Induces Spatial Demixing Dynamics (2011)
    American Physical Society (APS)
    Details
    Publication Date: 2011-11-04
    Description: Author(s): E. Nicklas, H. Strobel, T. Zibold, C. Gross, B. A. Malomed, P. G. Kevrekidis, and M. K. Oberthaler [Phys. Rev. Lett. 107, 193001] Published Thu Nov 03, 2011
    Keywords: Atomic, Molecular, and Optical Physics
    Print ISSN: 0031-9007
    Electronic ISSN: 1079-7114
    Topics: Physics
    Published by American Physical Society (APS)
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  • 8
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    Local and spatially extended sub-Poisson atom-number fluctuations in optical lattices (2011)
    American Physical Society (APS)
    Details
    Publication Date: 2011-07-26
    Description: Author(s): C. Gross, J. Estève, M. K. Oberthaler, A. D. Martin, and J. Ruostekoski We demonstrate that ultracold interacting bosonic atoms in an optical lattice with large on-site population show sub-Poisson on-site and intersite atom-number fluctuations. The experimental observations agree with numerical predictions of the truncated Wigner approximation. The correlations persist ... [Phys. Rev. A 84, 011609] Published Mon Jul 25, 2011
    Keywords: Matter waves and collective properties of cold atoms and molecules
    Print ISSN: 1050-2947
    Electronic ISSN: 1094-1622
    Topics: Physics
    Published by American Physical Society (APS)
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  • 9
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    Observation of Local and Conjugate Ionospheric Perturbations from Individual Oceanic Lightning Flashes (2014)
    Wiley
    Details
    Publication Date: 2014-01-11
    Description: [1]  Very low frequency (VLF) remote sensing observations of multifaceted local and conjugate ionospheric perturbations from geographically identified and well characterized oceanic lightning discharges are presented for the first time. Lightning-induced electron precipitation (LEP) events are shown to produce disturbances first in the conjugate hemisphere and subsequently in the hemisphere of the causative lightning discharge in agreement with theoretical predictions. A rough threshold peak current of ~100 kA is identified for lightning discharges to generate LEP events for the geomagnetic conditions present during observations. The occurrence of early VLF events and the subsequent duration of their recovery does not seem to fit any simple metric of lightning discharge peak current or proximity to great circle path. Knowledge of the full spectral density of the lightning EMP not just its peak current and the subionospheric mode structure are likely necessary to determine if a specific lightning discharge will generate an early VLF perturbation.
    Print ISSN: 0094-8276
    Electronic ISSN: 1944-8007
    Topics: Geosciences , Physics
    Published by Wiley on behalf of American Geophysical Union (AGU).
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  • 10
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    Requirement of hippocampal neurogenesis for the behavioral effects of antidepressants (2003)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2003-08-09
    Description: Various chronic antidepressant treatments increase adult hippocampal neurogenesis, but the functional importance of this phenomenon remains unclear. Here, using genetic and radiological methods, we show that disrupting antidepressant-induced neurogenesis blocks behavioral responses to antidepressants. Serotonin 1A receptor null mice were insensitive to the neurogenic and behavioral effects of fluoxetine, a serotonin selective reuptake inhibitor. X-irradiation of a restricted region of mouse brain containing the hippocampus prevented the neurogenic and behavioral effects of two classes of antidepressants. These findings suggest that the behavioral effects of chronic antidepressants may be mediated by the stimulation of neurogenesis in the hippocampus.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Santarelli, Luca -- Saxe, Michael -- Gross, Cornelius -- Surget, Alexandre -- Battaglia, Fortunato -- Dulawa, Stephanie -- Weisstaub, Noelia -- Lee, James -- Duman, Ronald -- Arancio, Ottavio -- Belzung, Catherine -- Hen, Rene -- New York, N.Y. -- Science. 2003 Aug 8;301(5634):805-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Center for Neurobiology and Behavior, Columbia University, New York, NY 10032, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/12907793" target="_blank"〉PubMed〈/a〉
    Keywords: 8-Hydroxy-2-(di-n-propylamino)tetralin/pharmacology ; Animals ; Antidepressive Agents/*pharmacology ; Antidepressive Agents, Second-Generation/pharmacology ; Antidepressive Agents, Tricyclic/pharmacology ; Behavior, Animal/*drug effects ; Cell Division/drug effects/radiation effects ; Conditioning (Psychology) ; Dentate Gyrus/cytology/drug effects/physiology ; Fear ; Feeding Behavior/drug effects ; Fluoxetine/*pharmacology ; Grooming/drug effects ; Hippocampus/cytology/drug effects/*physiology/radiation effects ; Long-Term Potentiation/radiation effects ; Male ; Mice ; Mice, Knockout ; Neurons/drug effects/*physiology ; Receptors, Serotonin/genetics/metabolism ; Receptors, Serotonin, 5-HT1 ; Stress, Physiological/drug therapy/physiopathology ; Synaptic Transmission/radiation effects
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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