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
Collection
Keywords
Publisher
Years
  • 1
    facet.materialart.
    Unknown
    Compositions of experimental major elements in the mantle transition zone (2019)
    PANGAEA
    In:  Supplement to: Zhang, Yanfei; Wang, Chao; Jin, Zhenmin (accepted): Decarbonation of stagnant slab in the mantle transition zone. Journal of Geophysical Research: Solid Earth, https://doi.org/10.1029/2020JB019533
    Details
    Publication Date: 2023-08-19
    Description: The starting materials are two carbonated basalt compositions with CO2 concentrations of 2.5 wt% (PC-a) and 5.0 wt% (PC-b), respectively. The partial melting experimental were conducted at the Laboratory for the Study of the Earth's Deep Interior (SEDI-Lab), China University of Geosciences (Wuhan), using 10/5 and 18/12 cell assemblages combined with a 1000-ton Walker-type multi-anvil press. The experimental pressure and temperature conditions are 13-20 GPa and 1300-1600 oC, respectively. Five phases were observed in the run products: garnet, clinopyroxene, stishovite, magnesite, and quench melt. The chemical compositions of phases were examined by an electron probe micro-analyzer (EPMA, JXA-8100) at the Key Laboratory of Submarine Geosciences, State Oceanic Administration. The accelerating voltage, beam size, and beam current were 15 kV, 5.0–10.0 μm and 10 nA, respectively. Count times were 10s for each of the measured element and 5s for the background. Standard materials were diopside for Si, rutile for Ti, pyrope for Al, Cr2O3 for Cr, CaSiO3 for Ca, Mg2SiO4 for Mg, Fe2O3 for Fe, MnSiO3 for Mn, NiO for Ni, jadeite for Na, K-feldspar for K, and Ca5P3F for P. The relative uncertainties were ~5% for elements of less than 1 wt%, ~1% for elements of ~1–5 wt%, and less than 0.5% for elements of greater than 5 wt%.
    Keywords: big mantle wedge; carbonated basalt; decarbonation; File content; File format; File name; File size; partial melting; Stagnant slab; Uniform resource locator/link to file
    Type: Dataset
    Format: text/tab-separated-values, 50 data points
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 2
    facet.materialart.
    Unknown
    High resolution data set of annual lake areas and water storage across the Inner Tibet, 2002-2015 (2018)
    PANGAEA
    In:  Supplement to: Yao, Fangfang; Wang, Jida; Yang, Kehan; Wang, Chao; Walter, Blake A; Crétaux, Jean-François (2018): Lake storage variation on the endorheic Tibetan Plateau and its attribution to climate change since the new millennium. Environmental Research Letters, 13(6), 064011, https://doi.org/10.1088/1748-9326/aab5d3
    Details
    Publication Date: 2023-08-19
    Description: Alpine lakes in the interior of Tibet, the endorheic Changtang Plateau (CP), serve as "sentinels" of regional climate change. Recent studies indicated that accelerated climate change has driven a widespread area expansion in lakes across the CP, but comprehensive and accurate quantifications of their storage changes are hitherto rare. This study integrated optical imagery and digital elevation models to uncover the fine spatial details of lake water storage (LWS) changes across the CP at an annual timescale after the new millennium (from 2002 to 2015). Validated by hypsometric information based on long-term altimetry measurements, our estimated LWS variations outperform some existing studies with reduced estimation biases and improved spatiotemporal coverages. The net LWS increased at an average rate of 7.34 (±0.62) Gt yr-1 (cumulatively 95.42 (±8.06) Gt), manifested as a dramatic monotonic increase of 9.05 (±0.65) Gt yr-1 before 2012, a deceleration and pause in 2013-2014, and then an intriguing decline after 2014. Observations from the Gravity Recovery and Climate Experiment satellites (GRACE) reveal that the LWS pattern is in remarkable agreement with that of the regional mass changes: a net effect of precipitation minus evapotranspiration (P-ET) in endorheic basins. Despite some regional variations, P-ET explains ~70% of the net LWS gain from 2002 to 2012 and the entire LWS loss after 2013. These findings clearly suggest that the water budget from net precipitation (i.e., P-ET) dominates those of glacier melt and permafrost degradation, and thus acts as the primary contributor to recent lake area/volume variations in the endorheic Tibet.
    Keywords: Inner_Tibet_Region; MULT; Multiple investigations
    Type: Dataset
    Format: application/zip, 11.1 MBytes
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 3
    facet.materialart.
    Unknown
    High-pressure experiments of phase compositions in subducted ophicarbonate (2020)
    PANGAEA
    Details
    Publication Date: 2024-04-20
    Description: Ophicarbonate is an important type of hydrothermally altered ultramafic rock that occurs in spreading centers and trenches, and in the interface between a subducting slab and the overlying mantle wedge. High-pressure experiments were performed at 10-15 GPa and 700-1100 oC to investigate the phase relations of subducted ophicarbonate. Ten samples were recovered after the experiments. In the recovered experimental charges, hydrous phases include phases A, D, and E; anhydrous minerals include clinopyroxene, orthopyroxene, garnet, magnesite, and olivine/wadsleyite. Phase compositions in the recovered charges were analyzed with an electron probe micro-analyzer (EPMA, JXA-8100), installed at the Key Laboratory of Submarine Geosciences, State Oceanic Administration. The accelerating voltage, beam current and beam size were 15 kv, 20 nA and 1-2 μm, respectively, for minerals, and 15 kv,10 nA and 5-30 μm, respectively, for quench phases. Count times were 10s for each of the measured element and 5s for the background. Standard materials were diopside for SiO2, MgO and CaO, jadeite for Na2O, K-feldspar for K2O, hematite for FeO, pyrope for Al2O3, NiO for NiO, apatite (Ca5P3F) for P2O5, rutile for TiO2, and eskolaite (Cr2O3) for Cr2O3.
    Keywords: Binary Object; Binary Object (File Size); Binary Object (Media Type); cold subduction zone; File content; hydrous carbonatitic liquids; Ophicarbonate
    Type: Dataset
    Format: text/tab-separated-values, 6 data points
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 4
    facet.materialart.
    Unknown
    High-space-coverage lake level change data sets on the Tibetan Plateau from 2002 to 2021 using multiple altimeter data (2021)
    PANGAEA
    Details
    Publication Date: 2024-04-20
    Description: The Qinghai Tibet region, known as the Roof of the World and the Water Tower of Asia, has the largest number of lakes in the world, and because of its high altitude and the near absence of disturbance by human activity, the Tibetan plateau has long been a significant place to study global climate change. Hydrological stations cannot be easily set up in this area, and the in-situ gauge data are not always publicly accessible. Satellite radar altimetry has become a very important alternative to in-situ observations as a data source. Estimation of lake water levels with a given radar altimeter is often limited by temporal and spatial coverage, and therefore multi-altimeter data are used to monitor lake levels. Restricted by the accuracy of waveform processing and the intervals period between different altimetry missions, the accuracy and the sampling frequency of the water level series are low. By processing and merging 8 different altimetry missions, the developed data set gives the water level changes for 364 lakes (larger than 10 km2) in Tibetan Plateau from 2002 to 2021. The period of lake level change series with high accuracy can be much longer in many lakes. This data set and associated approaches are valuable for calculating the lake storage changes, trend analyses of lake level, short-term monitoring of lake overflow, flooding disasters on the Tibetan Plateau, and the relationships between the lake ecosystem change and water resources change.
    Keywords: Binary Object; File content; Lake Water Level Change; Satellite altimetry; Tibetan Plateau
    Type: Dataset
    Format: text/tab-separated-values, 2 data points
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 5
    facet.materialart.
    Unknown
    Improving the Climate Hazards Group Infrared Precipitation with Station data (CHIRPS) using BCFS method based on the precipitation feature space over the Han River Basin from 1998 to 2019 (2024)
    PANGAEA
    Details
    Publication Date: 2024-04-20
    Description: Accurate and reliable high-resolution spatial precipitation data are crucial for hydrometeorology research. But most of the precipitation products have significant differences in terms of estimation accuracy owning to the influence of sensors, climate and terrain. Moreover, due to the neglect of the precipitation feature and the sparse distribution of gauge stations, the existing bias correction methods often have great uncertainties under different precipitation intensities. Thus, we developed a Daily Precipitation Bias Correction Approach Based on Feature Space Construction and Gauge-Satellite Fusion (BCFS). First, the precipitation feature space under different precipitation intensities was reconstructed, considering the attribute similarities of the spatial values, non-spatial values and trends. Then, the numerical relationships of correlated neighboring pixels were established taking account of these three similarities. Finally, the effective correction of the daily precipitation bias based on a small number of stations and a great number of pixels was achieved by the integration methods of variational mode decomposition, multivariate random forest regression model, and the spatial interpolation method. Using gauge station observations and the Climate Hazards Group Infrared Precipitation with Station data (CHIRPS) (1998-2019) and taking the Han River basin (China) as a case study, we quantitatively analyzed the accuracy of the bias correction results comparing the BCFS with the original CHIRPS precipitation estimations and the Wuhan University Satellite and Gauge precipitation Collaborated Correction method (WHU-SGCC). The results demonstrated the BCFS can effectively improve the estimation accuracy under different daily precipitation intensities. Therefore, the method is meaningful to make up for the deficiency of satellite-based estimations and provide high-precision daily precipitation for hydrometeorological and environmental monitoring and forecasting.
    Keywords: BCFS; Binary Object; Binary Object (MD5 Hash); CHIRPS; daily precipitation bias correction; feature space construction
    Type: Dataset
    Format: text/tab-separated-values, 8036 data points
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
  • 6
    Electronic Resource
    Electronic Resource
    Observation of spatial intermittency in Tokamak plasma turbulence (1999)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Plasmas 6 (1999), S. 3263-3266 
    Details
    ISSN: 1089-7674
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A sharp variation at some radial positions superimposed on a slow change in the profiles of the fluctuation levels, fluctuation-driven particle and energy fluxes, which is referred as spatial intermittency, is observed in the core plasma of the Keda Tokamak-5C (KT-5C) [World Survey of Activities in Controlled Fusion Research, Nuclear Fusion Special Supplement (International Atomic Energy Agency, Vienna, 1991), p. 190.]. The peaks in the profiles are located in the vicinity of low-q rational surfaces, and fluctuation spectra perpendicular to the magnetic field become more anisotropy there. The intermittency may be related to the radial variations in the nonlinear mode couplings near the low-q resonant surfaces. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.873566
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Conformation of acyclic vicinal dinitriles and diacids. Carbon-13 nuclear magnetic resonance correlations (1975)
    s.l. : American Chemical Society
    The @journal of organic chemistry 40 (1975), S. 3811-3820 
    Details
    ISSN: 1520-6904
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jo00914a001
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    EVALUATION OF THREE LATEX AGGLUTINATION TEST KITS FOR RAPID DETECTION OF CAMPYLOBACTER ISOLATES FROM CHICKEN SAMPLES (1995)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of rapid methods and automation in microbiology 4 (1995), S. 0 
    Details
    ISSN: 1745-4581
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Three commercially available latex agglutination test (LAT) kits for the rapid identification of Campylobacter isolates were evaluated against 87 isolates of Campylobacter spp. and 46 strains of non-Campylobacter bacteria (26 species). The performance of three LAT kits, MicroScreen® Campylobacter (Mercia Diagnostics, Shalford, UK), BBL CampyslideTM (Becton Dickinson Microbiology Systems, Cockeysville, MD, USA) and MERITECTM-Campy (jcl) (Meridian Diagnostics, Cincinnati, OH, USA), were compared. All sensitivities for the three LAT kits were 100%. Specificities of both MicroScreen® Campylobacter and BBL CampyslideTM were 100%, but specificity of MERITECTM-Campy (jcl) was only 89. 1/. The detection limit ranges (log CFU/ml) of MicroScreen®. Campylobacter, BBL CampyslideTM and MERITECTM-Campy (jcl) against five Campylobacter strains were 7.7–9.1, 7.4–8.0 and 8.5–9.4, respectively. BBL CampyslideTM was more sensitive (10X) than the other two LAT kits (p 〈 0.01). A one-day procedure was proposed to identify the suspicious colonies on selective agar by performing the LAT kit, catalase, oxidase and morphological observation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1745-4581.1995.tb00115.x
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Mechanism by which cyanine dyes measure membrane potential in red blood cells and phosphatidylcholine vesicles (1974)
    s.l. : American Chemical Society
    Biochemistry 13 (1974), S. 3315-3330 
    Details
    ISSN: 1520-4995
    Source: ACS Legacy Archives
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/bi00713a022
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    The quormone degradation system of Agrobacterium tumefaciens is regulated by starvation signal and stress alarmone (p)ppGpp (2004)
    Oxford, UK : Blackwell Science Ltd
    Molecular microbiology 52 (2004), S. 0 
    Details
    ISSN: 1365-2958
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Medicine
    Notes: A unique signal degradation system has recently been discovered in Agrobacterium tumefaciens. Upon entering stationary phase, A. tumefaciens terminates quorum sensing-dependent Ti-plasmid conjugation by degradation of acyl homoserine lactone (AHL) quormone via the enzyme AttM (AHL-lactonase). attM, together with attK and attL, constitute one transcriptional unit subjected to the control of a common promoter. AttJ, the other member of the signal degradation system, is an IclR-like negative transcriptional factor, which tightly represses the expression of AttM at the early stage of bacterial growth. In this study, we found that this quormone degradation system is activated by either carbon or nitrogen starvation. Quormone degradation was significantly delayed when bacterial culture was supplemented with extra carbon or nitrogen source in the nutrient-limited minimal medium before the onset of stationary phase. To identify the signalling pathway and regulatory mechanisms that mediate quormone degradation, we constructed a reporter strain A6(attKLM::lacZ) in which the promoterless lacZ was transcriptionally fused to the attKLM promoter. Transposon mutagenesis of strain A6(attKLM::lacZ) led to identification of the relA gene, which encodes the stress alarmone (p)ppGpp synthetase. Tn5 knock-out of relA abolished the stationary phase-dependent expression of attM. We concluded that the A. tumefaciens quormone degradation system is coupled to and regulated by the generic (p)ppGpp stress response machinery.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2958.2004.04061.x
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...