ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • PANGAEA  (21)
  • American Institute of Physics (AIP)
Collection
Keywords
Publisher
Years
  • 1
    Electronic Resource
    Electronic Resource
    Temperature dependence of the dielectric function of C6H6(l) and C6H5CH3(l) measured with THz spectroscopy (2000)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 113 (2000), S. 3749-3756 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: We report on an experimental investigation of the temperature dependence of the intermolecular dynamics in liquid benzene and toluene. With the use of THz time domain spectroscopy we measured the complex dielectric function (0.2–3.3 THz) of the liquids, at temperatures between −6 °C and 75 °C. By analyzing the dielectric loss (as opposed to the absorption coefficient) we found three contributions to the dielectric function for toluene and two for benzene. In the dipolar liquid toluene we observed a contribution from rotational diffusion at lower frequencies in addition to the two high-frequency librations also observed in benzene. The temperature and density dependence were different for the two librational bands, probably due to the different effect of three-body interactions for the two processes. Furthermore, we present measurements of the low-frequency depolarized Raman spectra as a function of temperature for benzene and toluene. These have been compared with the dielectric loss at similar temperatures. Moreover, for benzene a similar comparison is made between the dielectric loss and the reduced Raman susceptibility obtained by optical Kerr effect spectroscopy. Libration of the symmetric top axis is found in all spectra. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1287737
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    The temperature dependent dielectric function of liquid benzene: Interpretation of THz spectroscopy data by molecular dynamics simulation (2001)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 114 (2001), S. 5246-5255 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The dielectric function of liquid benzene at −4 °C, 21 °C, and 65 °C has been calculated from molecular dynamics simulations. The simulated dielectric loss curves reproduce the experimental temperature and density trends. In order to investigate the detailed influence of temperature and density changes as well as the underlying molecular mechanism we have taken advantage of different partitioning and projection schemes for the total dipole moment time correlation function (TCF). The study of the n-body partitioning showed that the temperature dependence of the two- and three-body contributions at t=0 can be explained solely by density change arguments. The molecular projection scheme showed that the dielectric loss is governed by out-of-plane libration at all temperatures. In-plane libration was found to contribute significantly only below 2 THz. Below 1 THz, diffusion, manifested as the negative cross correlation between the out-of-plane and the in-plane TCF's, plays a role very different from that of the directly observed diffusion in dipolar liquids. It has further been established that it is highly problematic to carry out an analysis of the dielectric loss function in terms of the molecular axis rotational TCF's which is a common procedure for the absorption spectrum. This problem was, however, solved by employing a molecular projection scheme. © 2001 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1350446
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Investigation of the temperature dependence of dielectric relaxation in liquid water by THz reflection spectroscopy and molecular dynamics simulation (1997)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 107 (1997), S. 5319-5331 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: We report measurements of the real and imaginary part of the dielectric constant of liquid water in the far-infrared region from 0.1 to 2.0 THz in a temperature range from 271.1 to 366.7 K. The data have been obtained with the use of THz time domain reflection spectroscopy, utilizing ultrashort electromagnetic pulses generated from a photoconductive antenna driven by femtosecond laser pulses. A Debye model with an additional relaxation time is used to fit the frequency dependence of the complex dielectric constants. We obtain a fast (fs) and a Debye (ps) relaxation time for the macroscopic polarization. The corresponding time correlation functions have been calculated with molecular dynamics simulations and are compared with experimental relaxation times. The temperature dependence of the Debye relaxation time is analyzed using three models: Transition state theory, a Debye–Stoke–Einstein relation between the viscosity and the Debye time, and a model stating that its temperature dependence can be extrapolated from a singularity of liquid water at 228 K. We find an excellent agreement between experiment and the two latter models. The simulations, however, present results with too large statistical error for establishing a relation for the temperature dependence. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.474242
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    facet.materialart.
    Unknown
    Biological data of local, coastal and oceanic Atlantic herring (Clupea harengus) in the North Sea, Skagerrak, Kattegat and Western Baltic (2017)
    PANGAEA
    In:  Supplement to: Berg, Florian; Slotte, Aril; Johannessen, Arne; Kvamme, Cecilie; Clausen, Lotte Worsøe; Nash, Richard DM (2017): Comparative biology and population mixing among local, coastal and offshore Atlantic herring (Clupea harengus) in the North Sea, Skagerrak, Kattegat and western Baltic. PLoS ONE, 12(10), e0187374, https://doi.org/10.1371/journal.pone.0187374
    Details
    Publication Date: 2023-02-22
    Description: The complex population structure of Atlantic herring (Clupea harengus) was studied in the northeast Atlantic. Biological and environmental data from 1970-2015 of 13 local, coastal and oceanic areas of the North Sea, Skagerrak, Kattegat and western Baltic were analyzed. The aim was to identify distinct populations by comparing historical data on the temporal and spatial variation in phenotypic characteristics as well as to indicate mixing of populations in time and space. Our data indicated clear variation in biological characteristics such as mean vertebral counts (VS), growth and maturity ogives among herring caught in the defined areas. Generalized adaptive models demonstrated temporal, as well as intra-annual, dynamics of VS to be a population specific trait in this study. High variability of VS was observed and it was not affected by environmental factors. The variability can be explained by variation in presence/absence of herring populations in certain areas. The three main populations identified within this paper represented the three managed stocks in this area: Norwegian spring spawners (NSS), western Baltic spring spawners (WBSS) and North Sea autumn spawners (NSAS). In addition, several local populations have been identified in fjords or lakes along the coast. Our data could not demonstrate direct mixing of local populations with the three main populations. However, local populations are included in the management of the three stocks, without knowing the extent of mixing. Our results clearly highlighted the importance of recognizing and understanding herring dynamics and mixing of populations as this is a challenge for the management of herring.
    Keywords: Age; Area/locality; Biological sample; BIOS; Clupea harengus; Clupea harengus, age; Clupea harengus, total length; Code; DATE/TIME; Gear identification number; Herring_rectangle; Identification; LATITUDE; Latitude 2; LONGITUDE; North Sea/Skagerrak; Number of vertebrae; Phase; Sex; Stage
    Type: Dataset
    Format: text/tab-separated-values, 5659618 data points
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 5
    facet.materialart.
    Unknown
    (Table TS1) Concentrations of organochlorine compounds and mercury in ivory gull (Pagophila eburnea) eggs from Svalbard and the Russian Arctic
    PANGAEA
    Details
    Publication Date: 2023-05-12
    Keywords: Atomic absorption spectrometry (AAS) of cold vapor; beta-Hexachlorocyclohexane; beta-Hexachlorocyclohexane, standard deviation; Biological sample; BIOS; Chlordane, standard deviation; Chlorobornane, congener; Chlorobornane, congener, standard deviation; Chlorobornane, total; Chlorobornane, total, standard deviation; cis-Chlordane; Dichlorodiphenyldichloroethane, standard deviation; Dichlorodiphenyldichloroethylene, standard deviation; Dichlorodiphenyltrichloroethane, standard deviation; Dieldrin; Dieldrin, standard deviation; Domashny; Event label; Franz Josef Land; Gas chromatography - Mass spectrometry (GC-MS); Hexachlorobenzene; Hexachlorobenzene, standard deviation; Kluyv_Cape; Latitude of event; Lipids; Lipids, standard deviation; Longitude of event; Mercury; Mercury, standard deviation; Mirex; Mirex, standard deviation; Nagurskoe; ortho,para-Dichlorodiphenyltrichloroethane; Oxychlordane; para,para-Dichlorodiphenyldichloroethane; para,para-Dichlorodiphenyldichloroethylene; para,para-Dichlorodiphenyltrichloroethane; Polychlorinated biphenyl; Polychlorinated biphenyl, standard deviation; Sample amount; Sample type; Severnaya Zemlya; Species; Svalbard; Svenskøya; trans-Nonachlor; δ13C; δ13C, standard deviation; δ15N; δ15N, standard deviation
    Type: Dataset
    Format: text/tab-separated-values, 442 data points
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 6
    facet.materialart.
    Unknown
    (Table TS2) Concentrations of brominated flame retardants and perfluorinated alkyl substances in ivory gull (Pagophila eburnea) eggs from Svalbard and the Russian Arctic
    PANGAEA
    Details
    Publication Date: 2023-05-12
    Keywords: 6:2 fluorotelomer sulfonate; 6:2 fluorotelomer sulfonate, standard deviation; Biological sample; BIOS; Domashny; Event label; Franz Josef Land; Gas chromatography - Mass spectrometry (GC-MS); Hexabromocyclododecane; Hexabromocyclododecane, standard deviation; High Performance Liquid Chromatography (HPLC); Kluyv_Cape; Latitude of event; Longitude of event; Nagurskoe; Perfluorinated alkyl substances; Perfluorinated alkyl substances, standard deviation; Perfluorodecane sulfonate; Perfluorodecane sulfonate, standard deviation; Perfluorodecanoate; Perfluorodecanoate, standard deviation; Perfluorododecanoate; Perfluorododecanoate, standard deviation; Perfluorohexane sulfonate; Perfluorohexane sulfonate, standard deviation; Perfluorononanoate; Perfluorononanoate, standard deviation; Perfluorooctane sulfonamide; Perfluorooctane sulfonamide, standard deviation; Perfluorooctane sulfonate; Perfluorooctane sulfonate, standard deviation; Perfluorooctanoate; Perfluorooctanoate, standard deviation; Perfluoropentadecanoate; Perfluoropentadecanoate, standard deviation; Perfluorotetradecanoate; Perfluorotetradecanoate, standard deviation; Perfluorotridecanoate; Perfluorotridecanoate, standard deviation; Perfluoroundecanoate; Perfluoroundecanoate, standard deviation; Polybrominated diphenyl ethers; Polybrominated diphenyl ethers, congener BDE-100; Polybrominated diphenyl ethers, congener BDE-153; Polybrominated diphenyl ethers, congener BDE-154; Polybrominated diphenyl ethers, congener BDE-209; Polybrominated diphenyl ethers, congener BDE-28; Polybrominated diphenyl ethers, congener BDE-47; Polybrominated diphenyl ethers, congener BDE-99; Polybrominated diphenyl ethers, standard deviation; Sample amount; Sample type; Severnaya Zemlya; Species; Svalbard; Svenskøya
    Type: Dataset
    Format: text/tab-separated-values, 454 data points
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 7
    facet.materialart.
    Unknown
    (Table 1) Zooplankton counts and volumes from Tucker trawl samples at Rijpfjorden
    PANGAEA
    Details
    Publication Date: 2023-05-12
    Keywords: DEPTH, water; Limacina helicina; MULT; Multiple investigations; Nordaustlandet fjords, Svalbard; Rijpfjorden; Themisto libellula; Time of day; Volume
    Type: Dataset
    Format: text/tab-separated-values, 40 data points
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 8
    facet.materialart.
    Unknown
    (Table 3) Stomach contents of Boreogadus saida specimens obtained during trawling at Rijpfjorden
    PANGAEA
    Details
    Publication Date: 2023-05-12
    Keywords: Boreogadus saida; Boreogadus saida, length; Boreogadus saida, stomach content; DEPTH, water; Length, standard deviation; MULT; Multiple investigations; Nordaustlandet fjords, Svalbard; Rijpfjorden; Time of day
    Type: Dataset
    Format: text/tab-separated-values, 44 data points
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 9
    facet.materialart.
    Unknown
    (Table 5) Abundance of mesozooplankton in the upper 1200 m at ice stations 1 and 2, Arctic Ocean (2008)
    PANGAEA
    Details
    Publication Date: 2023-07-10
    Keywords: Appendicularia; Arctic Ocean; Calanus finmarchicus; Calanus glacialis; Calanus hyperboreus; Calanus spp.; Chaetognatha; Depth, bottom/max; Depth, top/min; DEPTH, water; Event label; Ice-St_04-1; Ice-St_04-2; Metridia longa; MULT; Multiple investigations; Station label; Time of day
    Type: Dataset
    Format: text/tab-separated-values, 210 data points
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 10
    facet.materialart.
    Unknown
    (Table 2) Zooplankton counts and volumes from pelagic trawl samples at Rijpfjorden (2008)
    PANGAEA
    Details
    Publication Date: 2023-07-10
    Keywords: Beroe cucumis; Boreogadus saida; DEPTH, water; Euphausiacea; Mallotus villosus; MULT; Multiple investigations; Nordaustlandet fjords, Svalbard; Rijpfjorden; Themisto libellula; Time of day; Volume
    Type: Dataset
    Format: text/tab-separated-values, 52 data points
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...