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  (19)
  • Wiley-Blackwell  (16)
  • The American Society for Biochemistry and Molecular Biology (ASBMB)  (2)
  • ELSEVIER SCIENCE BV  (1)
  • Berlin, Heidelberg :Springer Berlin / Heidelberg,
Document type
Source
Keywords
Publisher
Years
Journal
Topic
  • 1
    facet.materialart.
    Unknown
    Synchronicity of Kuroshio Current and climate system variability since the Last Glacial Maximum (2016)
    ELSEVIER SCIENCE BV
    In:  EPIC3Earth and Planetary Science Letters, ELSEVIER SCIENCE BV, 452, pp. 247-257, ISSN: 0012-821X
    Details
    Publication Date: 2018-08-10
    Description: The Kuroshio Current (KC) is the northward branch of the North Pacific subtropical gyre (NPG) and exerts influence on the exchange of physical, chemical, and biological properties of downstream regions in the Pacific Ocean. Resolving long-term changes in the flow of the KC water masses is, therefore, crucial for advancing our understanding of the Pacific's role in global ocean and climate variability. Here, we reconstruct changes in KC dynamics over the past 20 ka based on grain-size spectra, clay mineral, and Sr–Nd isotope constraints of sediments from the northern Okinawa Trough. Combined with published sediment records surrounding the NPG, we suggest that the KC remained in the Okinawa Trough throughout the Last Glacial Maximum. Together with Earth-System-Model simulations, our results additionally indicate that KC intensified considerably during the early Holocene (EH). The synchronous establishment of the KC “water barrier” and the modern circulation pattern during the EH highstand shaped the sediment transport patterns. This is ascribed to the precession-induced increase in the occurrence of La Niña-like state and the strength of the East Asian summer monsoon. The synchronicity of the shifts in the intensity of the KC, Kuroshio extension, and El Niño/La Niña-Southern Oscillation (ENSO) variability may further indicate that the western branch of the NPG has been subject to basin-scale changes in wind stress curl over the North Pacific in response to low-latitude insolation. Superimposed on this long-term trend are high-amplitude, large century, and millennial-scale variations during last 5 ka, which are ascribed to the advent of modern ENSO when the equatorial oceans experienced stronger insolation during the boreal winter.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    PAPER (OA)
  • 2
    Electronic Resource
    Electronic Resource
    The NMR-Spectroscopic and X-ray Crystal-Structural Characterization of Two Cp*Ir Halfsandwich Complexes Containing the 1,2-Dicarba-closo-dodecaborane-1,2-diselenolato Ligand (1999)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 1999 (1999), S. 873-875 
    Details
    ISSN: 1434-1948
    Keywords: Iridium ; Selenium ; Diselenolenes ; Carboranes ; X-ray crystal structure analysis ; NMR spectroscopy ; Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The reaction of [Cp*IrCl2]2 with dilithium 1,2-ortho-carborane-1,2-diselenolate 3 leads to the green 16-electron diselenolene complex [Cp*Ir{Se2C2(B10H10)}] (4) which takes up two-electron ligands such as trimethylphosphane to give the 18-electron diselenolate derivative [Cp*Ir(PMe3){Se2C2(B10H10)}] (5). The molecular structures of 4 and 5 were determined by X-ray crystal structure analysis. The 77Se-nuclear shielding in 4 is lower by almost 500 ppm relative to that in 5.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
  • 3
    facet.materialart.
    Unknown
    Synthesis, Structure, Photoluminescence and Thermal Properties of Sodium Ethene-Bis-Nitrobenzenesulfonate (2012)
    Wiley-Blackwell
    Details
    Publication Date: 2012-08-25
    Description: Abstract. Sodium ethene-bis-nitrobenzenesulfonate, [Na 2 (ENS) · 6H 2 O] n ( 1 ) was synthesized through coupling reaction of o -nitrotoluenesulfonic acid in NaOH solution and characterized by single crystal X-ray diffraction, elemental analysis, IR and 1 H NMR spectroscopy, XRPD, DSC and TGA (where ENS 2– = ethene-bis-nitrobenzenesulfonate). The asymmetrical unit of ( 1 ) consists of two octahedral Na I ions, and the neighboring metal centers are bridged by μ 2 water molecules resulting in the formation of an inorganic tetranuclear unit. The tetranuclear units were connected through the ENS 2– ligands into a 2D topology net. The weak π–π stacking and H-bonding interactions further stabilized the structure. The crystals of (C 7 H 6 NO 5 S) – · (H 5 O 2 ) + ( 2 ) were obtained by post-processing the unreacted raw material to recycle. Furthermore, the rigidity and the conjugation effect of the aromatic system in compound 1 were increased through the coordination interactions of metal atoms to ligands, resulting in the emission coming from ligand enhanced with red-shifting about 9 nm of the maximal wavelength. The conjugation effects and the steric arrangement of the substituent groups play the main role to the luminescence intensity and red-shift effect.
    Print ISSN: 0044-2313
    Electronic ISSN: 1521-3749
    Topics: Chemistry and Pharmacology
    Published by Wiley-Blackwell
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 4
    facet.materialart.
    Unknown
    Isolation and Characterization of Secondary Metabolites from Rhododendron microphyton (2015)
    Wiley-Blackwell
    Details
    Publication Date: 2015-08-13
    Description: Four new iridoids, incarvoids D–F ( 1 – 3 , resp.) and incarvoid B 9- O - β - D -glucopyranoside ( 4 ), and one new monoterpenoid, argutoid B ( 5 ), along with 14 known compounds, were isolated from Rhododendron microphyton. Their structures were established by comprehensive 1D- and 2D-NMR spectroscopic analysis.
    Print ISSN: 0018-019X
    Electronic ISSN: 1522-2675
    Topics: Chemistry and Pharmacology
    Published by Wiley-Blackwell
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 5
    facet.materialart.
    Unknown
    Genetic research and structural dysplasia assessment of anorectal malformations in neonatal male rats induced by di(n-butyl) phthalate (2014)
    Wiley-Blackwell
    Details
    Publication Date: 2014-09-13
    Description: ABSTRACT This study was the first to investigate the genetic abnormalities and structural dysplasia of anorectal malformations (ARMs) in male rats induced by di( n -butyl) phthalate (DBP). DBP was administered to timed-pregnant rats to establish the ARM rat model. The incidence of ARMs in male offspring was 39.5%. In neonatal period, decreased body weight and anogenital distance were observed. The general image and histological analysis of male offspring confirmed the presence of ARMs. Anatomical examination of the ARM male rats revealed the dysplasia in solid organs (heart-lung, liver, spleen, and kidney). The decreases of serum testosterone concentration and androgen receptor expression in terminal rectum were indicative of the antiandrogenic effects of DBP. Moreover, significant decreased mRNA expressions of these androgen-related genes such as sonic hedgehog, Gli2, Gli3, bone morphogenetic protein 4, Wnt5a, Hoxa13, Hoxd13, fibroblast growth factor 10, and fibroblast growth factor receptor 2 were found in terminal rectum of the ARM male pubs. These results demonstrated that development of ARM rats was impaired by maternal exposure to DBP. The antiandrogenic effects of DBP disturbing the androgen-related signaling networks might play an important role in the occurrence of ARMs. © 2014 Wiley Periodicals, Inc. Environ Toxicol, 2014.
    Print ISSN: 1520-4081
    Electronic ISSN: 1522-7278
    Topics: Energy, Environment Protection, Nuclear Power Engineering
    Published by Wiley-Blackwell
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 6
    facet.materialart.
    Unknown
    Expression of FGF4 mRNA is mediated by mating behaviours in mice (2012)
    Wiley-Blackwell
    Details
    Publication Date: 2012-11-22
    Description: In mammals, breeding is preceded by species-specific mating behaviours. In this study, we investigated whether parthenogenetic embryo quality could be improved by mating behaviours in mice. To investigate this hypothesis, female mice were mated with vasectomized Kunming white male mice after superovulation. Oocytes were collected and counted at 16 h after superovulation. The oocytes were then artificially activated by medium containing 10 mM strontium chloride and 5 µg/ml cytochalasin B. Blastocysts were obtained by cultivating activated oocytes in vitro . Expression levels of reprogramming transcription factors (i.e. Oct4, Sox2, Klf4 and c-Myc ) in oocytes, apoptosis-related genes (i.e. Bax, Bcl2 and c-Myc) in cumulus cells and pluripotency-related transcription factors (i.e. Oct4, Nanog and FGF4 ) in blastocysts were analysed in samples collected from mated and unmated mice. Additionally, developmental competence of parthenogenetic embryos was used to assess following fibroblast growth factor 4 (FGF4) treatment. The results showed that the formation rate of blastocysts in unmated mice was significantly higher than that in mated mice ( p  〈 0.05). Embryo development was primarily blocked at the eight-cell stage in mated mice; however, the blastocyst formation rate did not differ significantly between groups after the addition of 25 ng/ml FGF4 to the medium at the four-cell stage ( p  〉 0.05). Moreover, the expression of the reprogramming factor Sox2 was significantly different in oocytes collected from mated versus unmated mice. Taken together, our results demonstrated that mating behaviours influenced embryonic development in vitro by decreasing FGF4 expression. Copyright © 2012 John Wiley & Sons, Ltd.
    Print ISSN: 0263-6484
    Electronic ISSN: 1099-0844
    Topics: Biology , Medicine
    Published by Wiley-Blackwell
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 7
    facet.materialart.
    Unknown
    Characterization and functional assay of a fatty acyl-CoA reductase gene in the scale insect, Ericerus pela Chavannes (Hemiptera: Coccoidae) (2017)
    Wiley-Blackwell
    Details
    Publication Date: 2017-12-27
    Description: Ericerus pela Chavannes (Hemiptera: Coccoidae) is an economically important scale insect because the second instar males secrete a harvestable wax-like substance. In this study, we report the molecular cloning of a fatty acyl-CoA reductase gene ( EpFAR ) of E. pela . We predicted a 520-aa protein with the FAR family features from the deduced amino acid sequence. The EpFAR mRNA was expressed in five tested tissues, testis, alimentary canal, fat body, Malpighian tubules, and mostly in cuticle. The EpFAR protein was localized by immunofluorescence only in the wax glands and testis. EpFAR expression in High Five insect cells documented the recombinant EpFAR reduced 26-0:(S) CoA and to its corresponding alcohol. The data illuminate the molecular mechanism for fatty alcohol biosynthesis in a beneficial insect, E. pela .
    Print ISSN: 0739-4462
    Electronic ISSN: 1520-6327
    Topics: Biology
    Published by Wiley-Blackwell
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 8
    facet.materialart.
    Unknown
    Lysosome-mediated degradation of a distinct pool of lipid droplets during hepatic stellate cell activation [Metabolism] (2017)
    The American Society for Biochemistry and Molecular Biology (ASBMB)
    Details
    Publication Date: 2017-07-29
    Description: Activation of hepatic stellate cells (HSCs) is a critical step in the development of liver fibrosis. During activation, HSCs lose their lipid droplets (LDs) containing triacylglycerols (TAGs), cholesteryl esters, and retinyl esters (REs). We previously provided evidence for the presence of two distinct LD pools, a preexisting and a dynamic LD pool. Here we investigate the mechanisms of neutral lipid metabolism in the preexisting LD pool. To investigate the involvement of lysosomal degradation of neutral lipids, we studied the effect of lalistat, a specific lysosomal acid lipase (LAL/Lipa) inhibitor on LD degradation in HSCs during activation in vitro. The LAL inhibitor increased the levels of TAG, cholesteryl ester, and RE in both rat and mouse HSCs. Lalistat was less potent in inhibiting the degradation of newly synthesized TAG species as compared with a more general lipase inhibitor orlistat. Lalistat also induced the presence of RE-containing LDs in an acidic compartment. However, targeted deletion of the Lipa gene in mice decreased the liver levels of RE, most likely as the result of a gradual disappearance of HSCs in livers of Lipa−/− mice. Lalistat partially inhibited the induction of activation marker α-smooth muscle actin (α-SMA) in rat and mouse HSCs. Our data suggest that LAL/Lipa is involved in the degradation of a specific preexisting pool of LDs and that inhibition of this pathway attenuates HSC activation.
    Print ISSN: 0021-9258
    Electronic ISSN: 1083-351X
    Topics: Biology , Chemistry and Pharmacology
    Published by The American Society for Biochemistry and Molecular Biology (ASBMB)
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 9
    facet.materialart.
    Unknown
    Optimal implicit staggered-grid finite-difference schemes based on the sampling approximation method for seismic modelling (2015)
    Wiley-Blackwell
    Details
    Publication Date: 2015-10-02
    Description: ABSTRACT We propose new implicit staggered-grid finite-difference schemes with optimal coefficients based on the sampling approximation method to improve the numerical solution accuracy for seismic modelling. We first derive the optimized implicit staggered-grid finite-difference coefficients of arbitrary even-order accuracy for the first-order spatial derivatives using the plane-wave theory and the direct sampling approximation method. Then, the implicit staggered-grid finite-difference coefficients based on sampling approximation, which can widen the range of wavenumber with great accuracy, are used to solve the first-order spatial derivatives. By comparing the numerical dispersion of the implicit staggered-grid finite-difference schemes based on sampling approximation, Taylor series expansion, and least squares, we find that the optimal implicit staggered-grid finite-difference scheme based on sampling approximation achieves greater precision than that based on Taylor series expansion over a wider range of wavenumbers, although it has similar accuracy to that based on least squares. Finally, we apply the implicit staggered-grid finite difference based on sampling approximation to numerical modelling. The modelling results demonstrate that the new optimal method can efficiently suppress numerical dispersion and lead to greater accuracy compared with the implicit staggered-grid finite difference based on Taylor series expansion. In addition, the results also indicate the computational cost of the implicit staggered-grid finite difference based on sampling approximation is almost the same as the implicit staggered-grid finite difference based on Taylor series expansion.
    Print ISSN: 0016-8025
    Electronic ISSN: 1365-2478
    Topics: Geosciences , Physics
    Published by Wiley-Blackwell
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    PAPER CURRENT
  • 10
    facet.materialart.
    Unknown
    Effect of shear stress on deoiling of oil-contaminated catalysts in a hydrocyclone (2015)
    Wiley-Blackwell
    Details
    Publication Date: 2015-12-22
    Description: Shear stress provided by a hydrocyclone was employed to remove the oil from oil-contaminated catalysts. Understanding the deoiling mechanism and providing quantitative analysis of the interaction between shear stress fields and deoiling are necessary to improve deoiling efficiency. In this study, a numerical simulation was conducted for the velocity field and shear stress field of a hydrocyclone, both of which are difficult to measure using other methods. Results showed that the shear stress field in the wall layer, where oil-contaminated catalysts are usually located, was robust. Increasing inlet flow rates resulted in a higher shear rate distribution along the wall layer. Numerical results were also compared with the experimental data. In the deoiling process, higher shear stress rates promoted faster transport of oil from catalysts into the fluid, thereby increasing the deoiling efficiency. Deoiling by the shear stress of a hydrocyclone is an efficient method for cleaning oil-contaminated catalysts within a short period of time.
    Print ISSN: 0930-7516
    Electronic ISSN: 1521-4125
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Published by Wiley-Blackwell
    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...