39,850 research outputs found

    Selection of the Argentine indicator region

    Get PDF
    Determined from available Argentine crop statistics, selection of the Indicator Region was based on the highest wheat, corn, and soybean producing provinces, which were: Buenos Aires, Cordoba, Entre Rios, and Santa Fe. Each province in Argentina was examined for the availability of LANDSAT data; area, yield and production statistics; crop calendars; and other ancillary data. The Argentine Indicator Region is described

    The phase diagram of ice: a quasi-harmonic study based on a flexible water model

    Get PDF
    The phase diagram of ice is studied by a quasi-harmonic approximation. The free energy of all experimentally known ice phases has been calculated with the flexible q-TIP4P/F model of water. The only exception is the high pressure ice X, in which the presence of symmetric O-H-O bonds prevents its modeling with this empirical interatomic potential. The simplicity of our approach allows us to study ice phases at state points of the T-P plane that have been omitted in previous simulations using free energy methods based on thermodynamic integration. The effect in the phase diagram of averaging the proton disorder that appears in several ice phases has been studied. It is found particularly relevant for ice III, at least for cell sizes typically used in phase coexistence simulations. New insight into the capability of the employed water model to describe the coexistence of ice phases is presented. We find that the H-ordered ices IX and XIV, as well as the H-disordered ice XII, are particularly stable for this water model. This fact disagrees with experimental data. The unexpected large stability of ice IX is a property related to the TIP4P-character of the water model. Only after omission of these three stable ice phases, the calculated phase diagram becomes in reasonable qualitative agreement to the experimental one in the T-P region corresponding to ice Ih, II, III, V, and VI. The calculation of the phase diagram in the quantum and classical limits shows that the most important quantum effect is the stabilization of ice II due to its lower zero-point energy when compared to that one of ices Ih, III, and V.Comment: 13 pages, 8 figures, 5 table

    Claim your online scholarly presence: ORCiD

    Get PDF
    Presented as a Small Group/Roundtable Discussion at 2020 IUSM Education Day.Claiming, maintaining, and tracking research output is crucial to a researcher’s continued visibility and impact. Tracking scholarly output and cultivating information about a researcher's work is made possible with online scholarly profile tools. As the most widely accepted unique identifier for authors, ORCiD IDs are increasingly required for: paper submissions to journals, grant submissions, and various NIH research training and career development awards. Attendees participated in hands on activities to set up profiles, and discover more information about tracking their impact going forward, and utilize existing connections between different scholarly profile tools. Learning objectives: • List reasons why maintaining scholarly profiles is important to researchers • Describe the benefits of several scholarly profile tools • Set up and/or update your scholarly profile(s
    corecore