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  • 1
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    Branched tetraether lipids and bacterial communities along an aridity soil transect in Inner Mongolia, northern China (2021)
    PANGAEA
    Details
    Publication Date: 2023-01-13
    Description: In this dataset, the basic environmental parameters, branched glycerol dialkyl glycerol tetraethers (brGDGTs) and soil bacterial community composition along an aridity soil transect in Inner Mongolia are included. In total, 32 surface soil samples (0-10 cm) were investigated, and the vegetation is characteried as desert steppe, typical steppe, and meadow steppe, repectively. The brGDGTs were extracted uisng a modified Bligh-Dyer method at the Institute of Botany, Chinese Academy of Sciences, and were subquently analyzed on a ultra high performance liquid chromatography mass spectrometer (UHPLC-MS) at Utrecht University. The bacterial DNA was analyzed using the MoBio PowerSoil DNA isolation Kit, and were further processed at the Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences.
    Keywords: Acidobacteria; Actinobacteria; aridity indices; brGDGTs; soil pH; Verrucomicrobia
    Type: Dataset
    Format: application/zip, 3 datasets
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  • 2
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    Branched tetraether lipids along an aridity soil transect in Inner Mongolia, northern China (2021)
    PANGAEA
    Details
    Publication Date: 2024-06-12
    Keywords: Acidobacteria; Actinobacteria; aridity indices; Branched glycerol dialkyl glycerol tetraether; Branched glycerol dialkyl glycerol tetraether, Ia; Branched glycerol dialkyl glycerol tetraether, Ib; Branched glycerol dialkyl glycerol tetraether, Ic; Branched glycerol dialkyl glycerol tetraether, IIa; Branched glycerol dialkyl glycerol tetraether, IIa'; Branched glycerol dialkyl glycerol tetraether, IIb; Branched glycerol dialkyl glycerol tetraether, IIb'; Branched glycerol dialkyl glycerol tetraether, IIc; Branched glycerol dialkyl glycerol tetraether, IIc'; Branched glycerol dialkyl glycerol tetraether, IIIa; Branched glycerol dialkyl glycerol tetraether, IIIa'; Branched glycerol dialkyl glycerol tetraether, IIIb; Branched glycerol dialkyl glycerol tetraether, IIIb'; brGDGTs; Cyclization ratio of branched tetraethers; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; DS11; DS11_soil; DS21; DS21_soil; DS31; DS31_soil; DS41; DS41_soil; DS51; DS51_soil; DS71; DS71_soil; DS81; DS81_soil; DS91; DS91_soil; Event label; Inner Mongolia, China; Isomer ratio; Methylation index of branched tetraethers; MS11; MS11_soil; MS21; MS21_soil; MS31; MS31_soil; MS41; MS41_soil; MS51; MS51_soil; MS61; MS61_soil; MS71; MS71_soil; MS81; MS81_soil; Number of cyclopentane moieties of 5-methyl pentamethylated brGDGTs; Number of cyclopentane moieties of 6-methyl pentamethylated brGDGTs; Number of cyclopentane moieties of tetramethylated branched glycerol dialkyl glycerol tetraether; soil pH; SOILS; Soil sample; Temperature, air; TS101; TS101_soil; TS11; TS11_soil; TS111; TS111_soil; TS121; TS121_soil; TS131; TS131_soil; TS141; TS141_soil; TS151; TS151_soil; TS161; TS161_soil; TS21; TS21_soil; TS31; TS31_soil; TS41; TS41_soil; TS51; TS51_soil; TS61; TS61_soil; TS71; TS71_soil; TS81; TS81_soil; TS91; TS91_soil; Ultra high performance liquid chromatography mass spectrometer (UHPLC-MS); Verrucomicrobia
    Type: Dataset
    Format: text/tab-separated-values, 768 data points
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  • 3
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    Bacterial communities along an aridity soil transect in Inner Mongolia, northern China (2021)
    PANGAEA
    Details
    Publication Date: 2024-06-12
    Keywords: Acidobacteria; Actinobacteria; aridity indices; Armatimonadetes; Bacteria, unclassified; Bacteroidetes; brGDGTs; Chloroflexi; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; DS11; DS11_soil; DS21; DS21_soil; DS31; DS31_soil; DS41; DS41_soil; DS51; DS51_soil; DS71; DS71_soil; DS81; DS81_soil; DS91; DS91_soil; Elevation of event; Event label; Firmicutes; Gemmatimonadetes; Inner Mongolia, China; Latitude of event; Longitude of event; MS11; MS11_soil; MS21; MS21_soil; MS31; MS31_soil; MS41; MS41_soil; MS51; MS51_soil; MS61; MS61_soil; MS71; MS71_soil; MS81; MS81_soil; Nitrospirae; Optional event label; Planctomycetes; Proteobacteria; soil pH; SOILS; Soil sample; TS101; TS101_soil; TS11; TS11_soil; TS111; TS111_soil; TS121; TS121_soil; TS131; TS131_soil; TS141; TS141_soil; TS151; TS151_soil; TS161; TS161_soil; TS21; TS21_soil; TS31; TS31_soil; TS41; TS41_soil; TS51; TS51_soil; TS61; TS61_soil; TS71; TS71_soil; TS81; TS81_soil; TS91; TS91_soil; Verrucomicrobia
    Type: Dataset
    Format: text/tab-separated-values, 704 data points
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  • 4
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    Environmental parameters along an aridity soil transect in Inner Mongolia, northern China (2021)
    PANGAEA
    Details
    Publication Date: 2024-06-12
    Keywords: Acidobacteria; Actinobacteria; Aridity index; aridity indices; brGDGTs; Depth, bottom/max; DEPTH, sediment/rock; Depth, top/min; DS11; DS11_soil; DS21; DS21_soil; DS31; DS31_soil; DS41; DS41_soil; DS51; DS51_soil; DS71; DS71_soil; DS81; DS81_soil; DS91; DS91_soil; Elevation of event; Event label; Inner Mongolia, China; Latitude of event; Longitude of event; MS11; MS11_soil; MS21; MS21_soil; MS31; MS31_soil; MS41; MS41_soil; MS51; MS51_soil; MS61; MS61_soil; MS71; MS71_soil; MS81; MS81_soil; Optional event label; Organic carbon, soil; pH; Precipitation, annual mean; soil pH; SOILS; Soil sample; Temperature, annual mean; TS101; TS101_soil; TS11; TS11_soil; TS111; TS111_soil; TS121; TS121_soil; TS131; TS131_soil; TS141; TS141_soil; TS151; TS151_soil; TS161; TS161_soil; TS21; TS21_soil; TS31; TS31_soil; TS41; TS41_soil; TS51; TS51_soil; TS61; TS61_soil; TS71; TS71_soil; TS81; TS81_soil; TS91; TS91_soil; Vegetation type; Verrucomicrobia
    Type: Dataset
    Format: text/tab-separated-values, 256 data points
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  • 5
    Electronic Resource
    Electronic Resource
    Photoacoustic frequency-domain depth profilometry of surface-layer inhomogeneities: Application to laser processed steels (1992)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 71 (1992), S. 6029-6035 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: An observed change in the photoacoustic signal frequency response of laser processed stainless-steel and carbon steel samples with respect to unprocessed reference samples is reported. A recently developed thermal wave theory for depth profiling of bulk inhomogeneities (where the surface thermal diffusivity is known and is the same as the homogeneous reference material) in condensed phases with arbitrary, continuously varying thermal diffusivity profiles [A. Mandelis, S. B. Peralta, and J. Thoen, J. Appl. Phys. 70, 1761 (1991)] has been modified to obtain quantitative thermal diffusivity profiles extending from the surface into the bulk. Profiles obtained using this method, which is, in principle, of nondestructive nature, are consistent with the profiles obtained from destructive methods such as cross-sectional optical metallographic examination and microhardness testing.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.350459
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  • 6
    Electronic Resource
    Electronic Resource
    Fast Uniform Mixing & Controllable Colloidal Forming of Ceramics (2005)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 475-479 (Jan. 2005), p. 1305-1308 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: A process of fast uniform mixing & controllable colloidal forming of ceramics wasinvented to thoroughly avoid the crucial effect of temperature on colloidal forming of ceramics. The ceramic suspension was divided into two components A and B. The monomer was added into A, and the initiator was added into B. Under this condition, there were no reactions in separate A or B because of segregation of the monomer and the initiator. Both of the suspensions could keep good fluidity until they were mixed quickly and uniformly. The mixture would fast solidify under a determined pressure. The highly automatic equipment also had been developed for this process
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/09/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.475-479.1305.pdf
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  • 7
    Electronic Resource
    Electronic Resource
    Preparation of Refractory Nozzle by Gelcasting of Zirconia Suspensions with Coarse Particles (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 280-283 (Feb. 2007), p. 987-990 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Zirconia suspensions with coarse particles were prepared and the rheogical behavior and sediment stability of such suspensions with different dispersants were studied. It was found that ZrO2 suspension stabilized with TAC (tri-ammonium citrate) has an obvious shear-thinning behavior and rapid settlement; In contrast, the suspension stabilized with arabic gum shows a shear-thickening behavior and hardly any settlement. Considering both fluidity and settlement stability, APA(ammonium-polyacrylate) was chosen as the dispersant to increase the solid volume fraction of ZrO2 suspension. Utilizing the above suspension, a kind of refractory nozzle for precision casting of a Cu-Cr alloy was prepared by gelcasting. Such nozzle has a very good resistance to thermal shock and flux scouring
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/49/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.280-283.987.pdf
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  • 8
    Electronic Resource
    Electronic Resource
    Effects of Solid Volume Fraction on the Gelcasting of Alumina Suspensions (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 280-283 (Feb. 2007), p. 1041-1044 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The effects of solid volume fraction (SVF) on the gelation of alumina suspensions for gelcasting, debonding and sintering of the green body were studied. It was found that with SVF rising, the gelation of alumina suspension delayed; and the strength of green body decreased. On the other hand, high SVF resulted in that polymerized acrylamide split at a relative low temperature. These phenomena manifestthat the fast polymerization of monomers in high SVF alumina suspension was inhibited, and the flexibility of the gelcasting was improved. However, Excessive solid volume fraction was prone to a bad rheological behavior of alumina suspension, and deteriorated the microstructure and properties of sintered body
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/49/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.280-283.1041.pdf
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  • 9
    Electronic Resource
    Electronic Resource
    Three Dimensional Numerical Approach to Splitting Failure of Rock Discs (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 353-358 (Sept. 2007), p. 921-924 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: The Brazilian splitting tests have been commonly and widely used as a standardized testmethod on disc or cylinder specimens to measure the indirect tensile strength of rocks in miningengineering and other rock engineering. In this paper, a novel numerical code, 3D Rock FailureProcess Analysis code, was applied to implement the splitting tensile failure tests on rock discs. Theinfluences of the heterogeneity on stress distribution in rock are also discussed and the splitting failurepatterns of specimens subjected to Brazilian tests are simulated. The simulated splitting results ofrock discs were found quite realistic, which indicate that the rock failure analysis method is applicableand practical for the study of rock disc splitting failure
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/55/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.353-358.921.pdf
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  • 10
    Electronic Resource
    Electronic Resource
    Numerical Simulation on Fracture Formation on Surfaces of Bi-Layered Materials (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Key engineering materials Vol. 353-358 (Sept. 2007), p. 993-996 
    Details
    ISSN: 1013-9826
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Fracture formation on surfaces of bi-layered materials is studied numerically. A simplifiedtwo-layered materials model like growing tree trunk is present. This work is focused on patterns offractures and fracture saturation. We consider the formation of crack pattern in bark as an example ofpattern formation due to expansion of one material layer with respect to another. As a result of thisexpansion, the bark stretches until it reaches its limit of deformation and cracks. A novel numericalcode, 3D Realistic Failure Process Analysis code (abbreviated as RFPA3D) is used to obtainnumerical solutions. In this numerical code, the heterogeneity of materials is taken into account byassigning different properties to the individual elements according to statistical distribution function.Elastic-brittle constitutive relation with residual strength for elements and a Mohr-Coulomb criterionwith a tensile cut-off are adopted so that the elements may fail either in shear or in tension. Thediscontinuity feature of the initiated crack is automatically induced by using degraded stiffnessapproach when the tensile strain of the failed elements reaching a certain value. The different patternsare obtained by varying simulation parameters, the thickness of the material layer. Numericalsimulation clearly demonstrates that the stress state transition precludes further infilling of fracturesand the fracture spacing reaches constant state,i.e. the socalled fracture saturation. It also indicatesthat RFPA code is a viable tool for modeling fracture formation and studying fracture patterns
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/01/55/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.353-358.993.pdf
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