GLORIA

GEOMAR Library Ocean Research Information Access

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
  • Articles  (36)
  • 2010-2014  (33)
  • 1990-1994  (3)
Document type
  • Articles  (36)
Source
Keywords
Publisher
Years
Year
Journal
Topic
  • 1
    Electronic Resource
    Electronic Resource
    Photovoltaic transistors based on a steady-state internal polarization effect in asymmetric semiconductor superlattices (1991)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 59 (1991), S. 393-395 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: In semiconductor superlattices lacking the reflection symmetry, transient internal polarization fields have previously been reported. We show that a modified structure can generate a steady-state photovoltage. We then propose a new class of photovoltaic transistors in which this voltage directly controls the conductivity of the transistor channel.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.105441
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Quantum chemical studies on the bonding characteristics of some M3X4 transition-metal halogenide clusters (1994)
    Springer
    Journal of cluster science 5 (1994), S. 505-521 
    Details
    ISSN: 1572-8862
    Keywords: Niobium ; molybdenum ; incomplete cubane ; ab initio ; sulfide ; selenide ; halide ligands
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Ab initio calculations with effective core potentials have been performed on the trinuclear incomplete cubane-type cores in some cluster compounds with halogen as the bridging atoms. By comparison with the bonding and electronic structures of analogous chalcogenides of M3O n S 4−n 4+ and M3O n Se 4− 4+ the metal-metal bonding, metal-ligand bonding and the electronic characteristics of halogenide clusters of Nb3CI 4 3+ , M3OCl 3 5+ (M = Mo, W), Mo3OBr 3 5+ , M3Cl 4 5+ (M = Nb, Ta), and Cu3I 4 − are discussed in terms of delocalized and localized molecular orbitals. One three-centered two-electronσ bond has been found to exist among the three skeletal metals in the clusters having eight skeletal electrons. The reason why these transition-metal halides do not show the so-called quasi-aromatic (i.e. benzene-like) character is attributed to the lack of strongd − pπ bonding in the puckeredM 3(µ−X)3 six-membered rings.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01171382
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    γ-Hydroxybutyric acid binding sites: Interaction with the GABA-benzodiazepine-picrotoxin receptor complex (1992)
    Springer
    Neurochemical research 17 (1992), S. 201-204 
    Details
    ISSN: 1573-6903
    Keywords: Gamma hydroxybutyrate ; GABA receptor ; binding ; pentobarbital ; pentylenetetrazole ; picrotoxin
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract The effect of three compounds known to allosterically modulate binding to the GABA/benzodiazepine/picrotoxin receptor complex on 4-hydroxy-2,3 [3H]butyric acid (GHB) binding was investigated. Pentobarbital, pentylenetetrazole, and picrotoxin enhanced [3H]GHB binding in a dose dependent fashion. Pentobarbital enhanced 4-hydroxy-2,3 [3H]butyric acid binding was associated with an increase in Bmax while pentylenetetrazole and picrotoxin altered the affinity of GHB for its binding site producing a decrease in Kd. These findings suggest that the GHB and GABA receptor complex may share certain moieties in common.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00966800
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    facet.materialart.
    Unknown
    Raman scattering investigation of C-doped a-SiO 2 after high energy heavy ion irradiations (2011)
    Institute of Physics (IOP)
    Details
    Publication Date: 2011-09-17
    Description: Thermally grown amorphous SiO 2 films were implanted at room temperature with 100 keV C-ions to 5.0×10 17 or 1.2×10 18 ions/cm 2 . These samples were irradiated at room temperature with 853 MeV Pb-ions to 5.0×10 11 , 1.0×10 12 , 5.0×10 12 ions/cm 2 , or with 308 MeV Xe-ions to 1.0×10 12 , 1.0×10 13 , 1.0×10 14 ions/cm 2 , respectively. Then the samples were investigated using micro-Raman spectroscopy. From the obtained Raman spectra, we deduced that Si—C bonds and sp 2 carbon sites were created and nano-inclusions may also be produced in the heavy ion irradiated C-doped SiO 2 . Furthermore, some results show that Pb ion irradiations could produce larger size inclusions than Xe ions and the inclusion size decreased with increasing the irradiation fluence. The possible modification process of C-doped a-SiO 2 under swift heavy ion irra...
    Print ISSN: 1674-1137
    Topics: Physics
    Published by Institute of Physics (IOP)
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 5
    facet.materialart.
    Unknown
    Ice nucleation of bare and sulfuric acid coated mineral dust particles and implication for cloud properties (2014)
    Wiley-Blackwell
    Details
    Publication Date: 2014-08-16
    Description: Ice nucleation properties of atmospherically relevant dust minerals coated with soluble materials are not yet well understood. We determined ice nucleation ability of bare and sulfuric acid coated mineral dust particles as a function of temperature (−25 to −35 °C) and relative humidity with respect to water (RH w ; 75 to 110 %) for five different mineral dust types: 1) Arizona test dust (ATD), 2) illite, 3) montmorillonite, 4) K-feldspar, and 5) quartz. The particles were dry-dispersed and size-selected at 200 nm, and we determined the fraction of dust particles nucleating ice at various temperatures and RH w . Under water-subsaturated conditions, compared to bare dust particles, we found that coated particles showed a reduction in their ice nucleation ability. Under water-supersaturated conditions, however, we did not observe a significant coating effect (i.e., the bare and coated dust particles had nearly similar nucleating properties). X-ray diffraction patterns of the coated particles indicated that acid treatment altered the crystalline nature of the surface and caused structural disorder; thus, we concluded that the lack of such structured order reduced the ice nucleation efficiency of the coated particles in deposition ice nucleation mode. In addition, our single column model results show that coated particles significantly modify cloud properties such as ice crystal number concentration and ice water content compared to bare particles in water-subsaturated conditions. However, in water-supersaturated conditions, cloud properties differ only at warmer temperatures. These modeling results imply that future aged dust particle simulations should implement coating parameterizations to accurately predict cloud properties.
    Print ISSN: 0148-0227
    Topics: Geosciences , Physics
    Published by Wiley-Blackwell on behalf of American Geophysical Union (AGU).
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 6
    facet.materialart.
    Unknown
    Mining differential top-k co-expression patterns from time course comparative gene expression datasets (2013)
    BioMed Central
    Details
    Publication Date: 2013-07-22
    Description: Background: Frequent pattern mining analysis applied on microarray dataset appears to be a promising strategy for identifying relationships between gene expression levels. Unfortunately, too many itemsets (co-expressed genes) are identified by this analysis method since it does not consider the importance of each gene within biological processes to a cellular response and does not take into account temporal properties under biological treatment-control matched conditions in a microarray dataset. Results: We propose a method termed TIIM (Top-k Impactful Itemsets Miner), which only requires specifying a user-defined number k to explore the top k itemsets with the most significantly differentially co-expressed genes between 2 conditions in a time course. To give genes different weights, a table with impact degrees for each gene was constructed based on the number of neighboring genes that are differently expressed in the dataset within gene regulatory networks. Finally, the resulting top-k impactful itemsets were manually evaluated using previous literature and analyzed by a Gene Ontology enrichment method. Conclusions: In this study, the proposed method was evaluated in 2 publicly available time course microarray datasets with 2 different experimental conditions. Both datasets identified potential itemsets with co-expressed genes evaluated from the literature and showed higher accuracies compared to the 2 corresponding control methods: i) performing TIIM without considering the gene expression differentiation between 2 different experimental conditions and impact degrees, and ii) performing TIIM with a constant impact degree for each gene. Our proposed method found that several new gene regulations involved in these itemsets were useful for biologists and provided further insights into the mechanisms underpinning biological processes. The Java source code and other related materials used in this study are available at "http://websystem.csie.ncku.edu.tw/TIIM_Program.rar".
    Electronic ISSN: 1471-2105
    Topics: Biology , Computer Science
    Published by BioMed Central
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 7
    facet.materialart.
    Unknown
    Hydrophobic Collapse of Foldamer Capsules Drives Picomolar-Level Chloride Binding in Aqueous Acetonitrile Solutions (2013)
    American Chemical Society (ACS)
    Details
    Publication Date: 2013-09-13
    Description: Journal of the American Chemical Society DOI: 10.1021/ja4074744
    Print ISSN: 0002-7863
    Electronic ISSN: 1520-5126
    Topics: Chemistry and Pharmacology
    Published by American Chemical Society (ACS)
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 8
    facet.materialart.
    Unknown
    Solution-processed small-molecule solar cells: breaking the 10% power conversion efficiency (2013)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2013-11-29
    Description: A two-dimensional conjugated small molecule (SMPV1) was designed and synthesized for high performance solution-processed organic solar cells. This study explores the photovoltaic properties of this molecule as a donor, with a fullerene derivative as an acceptor, using solution processing in single junction and double junction tandem solar cells. The single junction solar cells based on SMPV1 exhibited a certified power conversion efficiency of 8.02% under AM 1.5 G irradiation (100 mW cm−2). A homo-tandem solar cell based on SMPV1 was constructed with a novel interlayer (or tunnel junction) consisting of bilayer conjugated polyelectrolyte, demonstrating an unprecedented PCE of 10.1%. These results strongly suggest solution-processed small molecular materials are excellent candidates for organic solar cells. Scientific Reports 3 doi: 10.1038/srep03356
    Electronic ISSN: 2045-2322
    Topics: Natural Sciences in General
    Published by Nature Publishing Group (NPG)
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 9
    facet.materialart.
    Unknown
    Annual net greenhouse gas balance in a halophyte (Helianthus tuberosus) bioenergy cropping system under various soil practices in southeast China (2014)
    Wiley-Blackwell
    Details
    Publication Date: 2014-03-12
    Description: A full accounting of net greenhouse gas balance (NGHGB) and greenhouse gas intensity (GHGI) was examined in an annual coastal reclaimed saline Jerusalem artichoke-fallow cropping system under various soil practices including soil tillage, soil ameliorant and crop residue amendments. Seasonal fluxes of soil carbon dioxide (CO 2 ), methane (CH 4 ) and nitrous oxide (N 2 O) were measured using static chamber method, and the net ecosystem exchange of CO 2 (NEE) was determined by the difference between soil heterotrophic respiration ( R H ) and net primary production (NPP). Relative to no tillage, rotary tillage significantly decreased the NPP of Jerusalem artichoke while it had no significant effects on the annual R H . Rotary tillage increased CH 4 emissions, while seasonal or annual soil N 2 O emissions did not statistically differ between the two tillage treatments. Compared with the control plots, soil ameliorant or straw amendment enhanced R H , soil CH 4 and N 2 O emissions under the both tillage regimes. Annual NGHGB was negative for all the field treatments, as a consequence of net ecosystem CO 2 sequestration exceeding the CO 2 -equivalents released as CH 4 and N 2 O emissions, which indicates that Jerusalem artichoke-fallow cropping system served as a net sink of GHGs. The annual net NGHGB and GHGI were estimated to be 11–21% and 4–8% lower in the NT than in RT cropping systems, respectively. Soil ameliorant and straw amendments greatly increased NPP and thus significantly decreased the negative annual net NGHGB. Overall, higher NPP but lower climatic impacts of coastal saline bioenergy production would be simultaneously achieved by Jerusalem artichoke cultivation under no tillage with improved saline soil conditions in southeast China. This article is protected by copyright. All rights reserved.
    Print ISSN: 1757-1693
    Electronic ISSN: 1757-1707
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Published by Wiley-Blackwell
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 10
    facet.materialart.
    Unknown
    Innovative strategy with potential to increase hemodialysis efficiency and safety (2014)
    Nature Publishing Group (NPG)
    Details
    Publication Date: 2014-03-22
    Description: Uremic toxins are mainly represented by blood urine nitrogen (BUN) and creatinine (Crea) whose removal is critically important in hemodialysis (HD) for kidney disease. Patients undergoing HD have a complex illness, resulting from: inadequate removal of organic waste, dialysis-induced oxidative stress and membrane-induced inflammation. Here we report innovative breakthroughs for efficient and safe HD by using a plasmon-induced dialysate comprising Au nanoparticles (NPs)-treated (AuNT) water that is distinguishable from conventional deionized (DI) water. The diffusion coefficient of K3Fe(CN)6 in saline solution can be significantly increased from 2.76, to 4.62 × 10−6 cm s−1, by using AuNT water prepared under illumination by green light-emitting diodes (LED). In vitro HD experiments suggest that the treatment times for the removals of 70% BUN and Crea are reduced by 47 and 59%, respectively, using AuNT water instead of DI water in dialysate, while additionally suppressing NO release from lipopolysaccharide (LPS)-induced inflammatory cells. Scientific Reports 4 doi: 10.1038/srep04425
    Electronic ISSN: 2045-2322
    Topics: Natural Sciences in General
    Published by Nature Publishing Group (NPG)
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...