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  • 1
    facet.materialart.
    Unknown
    PANGAEA
    Publication Date: 2023-03-08
    Keywords: AGE; Age, comment; Age, maximum/old; Age, minimum/young; Latitude of event; Longitude of event; Paleoclimate Database of the Quaternary; PKDB; PKDB286429; Precipitation, difference; Temperature, difference
    Type: Dataset
    Format: text/tab-separated-values, 10 data points
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  • 2
    facet.materialart.
    Unknown
    PANGAEA
    Publication Date: 2023-03-08
    Keywords: AGE; Age, comment; Age, maximum/old; Age, minimum/young; Interpretation from literature (PKDB); Latitude of event; Longitude of event; Paleoclimate Database of the Quaternary; PKDB; PKDB286428; Precipitation, relative difference; Precipitation integrated; Temperature, air; Temperature, relative difference
    Type: Dataset
    Format: text/tab-separated-values, 15 data points
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  • 3
    Publication Date: 2024-04-22
    Description: The Global Consortium for the Classification of Fungi and fungus-like taxa is an international initiative of more than 550 mycologists to develop an electronic structure for the classification of these organisms. The members of the Consortium originate from 55 countries/regions worldwide, from a wide range of disciplines, and include senior, mid-career and early-career mycologists and plant pathologists. The Consortium will publish a biannual update of the Outline of Fungi and funguslike taxa, to act as an international scheme for other scientists. Notes on all newly published taxa at or above the level of species will be prepared and published online on the Outline of Fungi website (https://www.outlineoffungi.org/), and these will be finally published in the biannual edition of the Outline of Fungi and fungus-like taxa. Comments on recent important taxonomic opinions on controversial topics will be included in the biannual outline. For example, ‘to promote a more stable taxonomy in Fusarium given the divergences over its generic delimitation’, or ‘are there too many genera in the Boletales?’ and even more importantly, ‘what should be done with the tremendously diverse ‘dark fungal taxa?’ There are undeniable differences in mycologists’ perceptions and opinions regarding species classification as well as the establishment of new species. Given the pluralistic nature of fungal taxonomy and its implications for species concepts and the nature of species, this consortium aims to provide a platform to better refine and stabilise fungal classification, taking into consideration views from different parties. In the future, a confidential voting system will be set up to gauge the opinions of all mycologists in the Consortium on important topics. The results of such surveys will be presented to the International Commission on the Taxonomy of Fungi (ICTF) and the Nomenclature Committee for Fungi (NCF) with opinions and percentages of votes for and against. Criticisms based on scientific evidence with regards to nomenclature, classifications, and taxonomic concepts will be welcomed, and any recommendations on specific taxonomic issues will also be encouraged; however, we will encourage professionally and ethically responsible criticisms of others’ work. This biannual ongoing project will provide an outlet for advances in various topics of fungal classification, nomenclature, and taxonomic concepts and lead to a community-agreed classification scheme for the fungi and fungus-like taxa. Interested parties should contact the lead author if they would like to be involved in future outlines.
    Keywords: Plant Science ; Ecology ; Evolution ; Behavior and Systematics
    Repository Name: National Museum of Natural History, Netherlands
    Type: info:eu-repo/semantics/article
    Format: application/pdf
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  • 4
    Electronic Resource
    Electronic Resource
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 92 (1990), S. 2025-2035 
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: In this paper, we emphasize the temperature- and exposure-dependent development of low-energy electron diffraction patterns,measured quantitatively during oxidation of Ni(100) at 80 to 400 K. We find a strong temperature dependence in the development of LEED patterns associated with NiO. NiO(111) is favored by adsorption temperatures below 300 K, whereas a (7×7)-like structure is favored by adsorption temperatures of 300 to 400 K. Room temperature is a "crossover'' point between these two forms of the oxide. The final oxide depth is independent of adsorption temperature and, therefore, of epitaxial orientation, between 80 and 400 K. When the sample is heated in vacuum after adsorption, massive rearrangements take place above 500 K. Some of the nickel reverts to metallic nickel covered by a c(2×2) oxygen overlayer, and some forms NiO crystallites which are probably deeper than the initial oxide skin. Effectively, the parent oxide disproportionates into a less-oxygen-rich phase and a more-oxygen-rich phase. This is again independent of the orientation of the initial oxide epitaxy.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 80 (1996), S. 7130-7133 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A ferroelectric-superconducting photodetector has been developed and characterized. An atomically ordered PbZrTiO3 (PZT) ferroelectric gate was grown over a c-oriented YBa2Cu3O7−x (YBCO) high Tc superconductor substrate by excimer laser deposition. Irradiation of the PZT gate with photons near the ferroelectric gap energy resulted in a measurable change of the drain-source photocurrent with the device at a temperature near Tc of the YBCO. The critical temperature of the YBCO base was shifted up to 4 K when the PZT gate was irradiated with photon flux of wavelength from 300 to 500 nm. A responsivity of 360 A/W was measured and an upper bound on response time to optical irradiation of 100 ns was determined. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 78 (1995), S. 4780-4783 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Ferroelectric Pb(Zr0.52Ti0.48)O3 (PZT) (001) thin films, integrated to high Tc superconducting YBa2Cu3O7−x (YBCO) films used as electrodes, have been studied for their photocurrent response and permittivity as a function of temperature. A stable photocurrent was observed to increase with increasing the temperature over the range of 25–350 °C. This increase was found to be strongly polarization dependent and due to the change of the pyroelectric coefficient of PZT thin film with temperature. The pyroelectric coefficient for a PZT sample was measured as ∼30 nC/cm2 K at room temperature, and ∼80 nC/cm2 K at 320 °C. The YBCO electrode showed a stable metallic resistance behavior in this temperature range. There was no detectable photocurrent from YBCO layer. No poling is required until 350 °C for the PZT/YBCO heterostructure detector because the PZT film is oriented when grown on c-axis oriented YBCO. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 83 (1998), S. 4980-4984 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Mn- and Sb-doped PbZrTiO3 (PMSZT) thin-film pyroelectric infrared (IR) detectors have been fabricated on c-oriented YB2Cu3O7−x (YBCO) thin films. The thin-film heterostructure detectors were prepared by pulsed laser deposition on LaAlO3 (100) substrates. The YBCO layer in the PMSZT/YBO heterostructure was used as an atomic template for the epitaxial growth of the PMSZT thin films, as well as a nonsuperconducting electrode and IR reflector in the detector. Mn and Sb doping was used to tune the Pb(Zr,Ti)O3 transition temperature to a lower value (Curie temperature of ∼170 °C), and hence, to modify the pyroelectric and dielectric properties of the pyroelectric material. The PMSZT IR detectors were examined as to their photovoltage and photocurrent in response to IR source temperature, detector temperature, and chopper frequency. The experimental results show that the detector has relatively high IR sensitivity with a detectivity D* of ∼4×108 cm Hz1/2/W, and is capable of operating from room temperature to ∼170 °C. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 88 (2000), S. 1004-1007 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: (Mn, Sb) doped Pb(Zr, Ti)O3 (PMSZT) thin film infrared (IR) detectors were integrated with Si substrates. The epitaxial PMSZT thin films, deposited on c-axis oriented YBa2Cu3O7−y (YBCO) bottom electrodes, show good ferroelectric properties with a remnant polarization Pr of 31 μC/cm2, a spontaneous polarization Ps of 38 μC/cm2, and a coercive field Ec of 21 kV/cm under an electric field of 76 kV/cm. Doping with Mn and Sb into Pb(Zr, Ti)O3 (PZT) not only decreased the Curie temperature TC from 350 °C for PZT to 175 °C for PMSZT, but also enhanced IR responsivity significantly. PMSZT thin films show high figures of merit, Fi of 15.5×10−9 C cm/J, Fv of 1758 cm2/C and Fd of 5×10−5 Pa−1/2 at 25 °C. IR detector arrays, fabricated with PMSZT films deposited on YBCO microbridges with an air gap between them and the substrate for reduced thermal mass, show a higher IR voltage responsivity compared to those without an air gap. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 56 (1985), S. 752-754 
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: An ultrahigh-vacuum compatible sample manipulator which incorporates rotation and a Dewar for sample cooling is described. The rotation is accomplished using a differentially pumped rotary seal made of two Teflon O rings and the temperature of the sample can be controlled from 30 K to over 1600 K.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 66 (1995), S. 1172-1174 
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The low-temperature photoresponse properties for a PbZrxTi1−xO3/YBa2Cu3O7−x thin-film heterostructure capacitor are reported. The fast optical readout effect measured for the device while the YBCO bottom electrode was superconducting indicates a fall time dependent on YBCO state. A simple equivalent circuit model confirmed that the temperature dependence of the YBCO electrode resistance is responsible for the variation of the fall time of the optical readout signal. Such heterostructures can be used to fabricate high power, radiation-hard optical sensors which cover the whole visible range. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
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