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  • Plasma Physics  (4)
  • Chromatin and Epigenetics  (2)
  • Hemerythrin  (2)
  • Lithostratigraphy  (2)
  • 1
    Electronic Resource
    Electronic Resource
    Reactivity patterns for redox reactions of monomer forms of myoglobin, hemocyanin and hemerythrin
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/Protein Structure and Molecular 1102 (1992), S. 245-252 
    Details
    ISSN: 0167-4838
    Keywords: Electron transfer ; Hemerythrin ; Hemocyanin ; Myoglobin ; Redox reaction
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0167-4838(92)90516-G
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Reactivity patterns for redox reactions of monomer forms of myoglobin, hemocyanin and hemerythrin
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/Bioenergetics 1102 (1992), S. 245-252 
    Details
    ISSN: 0005-2728
    Keywords: Electron transfer ; Hemerythrin ; Hemocyanin ; Myoglobin ; Redox reaction
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0005-2728(92)90106-C
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Stratigraphy of the Upper Cretaceous and Lower Tertiary strata in the Tethyan Himalayas of Tibet (Tingri area, China) (1996)
    Springer
    Geologische Rundschau 85 (1996), S. 723-754 
    Details
    ISSN: 0016-7835
    Keywords: Key words Biostratigraphy ; Lower Tertiary ; Indian shelf ; Upper Cretaceous ; Foraminifers ; Lithostratigraphy ; Passive continental margin ; Tethys Himalaya ; Tibet
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract  The 1500-m-thick marine strata of the Tethys Himalaya of the Zhepure Mountain (Tingri, Tibet) comprise the Upper Albian to Eocene and represent the sedimentary development of the passive northern continental margin of the Indian plate. Investigations of foraminifera have led to a detailed biozonation which is compared with the west Tethyan record. Five stratigraphic units can be distinguished: The Gamba group (Upper Albian – Lower Santonian) represents the development from a basin and slope to an outer-shelf environment. In the following Zhepure Shanbei formation (Lower Santonian – Middle Maastrichtian), outer-shelf deposits continue. Pebbles in the top layers point to beginning redeposition on a continental slope. Intensified redeposition continues within the Zhepure Shanpo formation (Middle Maastrichtian – Lower Paleocene). The series is capped by sandstones of the Jidula formation (Danian) deposited from a seaward prograding delta plain. The overall succession of these units represents a sea-level high at the Cenomanian/Turonian boundary followed, from the Turonian to Danian, by an overall shallowing-upward megasequence. This is followed by a final transgression – regression cycle during the Paleocene and Eocene, documented in the Zhepure Shan formation (?Upper Danian – Lutetian) and by Upper Eocene continental deposits. The section represents the narrowing and closure of the Tethys as a result of the convergence between northward-drifting India and Eurasia. The plate collision started in the Lower Maastrichtian and caused rapid changes in sedimentation patterns affected by tectonic subsidence and uplift. Stronger subsidence and deposition took place from the Middle Maastrichtian to the Lower Paleocene. The final closure of remnant Tethys in the Tingri area took place in the Lutetian.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s005310050108
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  • 4
    Electronic Resource
    Electronic Resource
    Stratigraphy of the upper cretaceous and lower tertiary strata in the Tethyan Himalayas of Tibet (Tingri area, China) (1996)
    Springer
    International journal of earth sciences 85 (1996), S. 723-754 
    Details
    ISSN: 1437-3262
    Keywords: Biostratigraphy ; Lower Tertiary ; Indian shelf ; Upper Cretaceous ; Foraminifers ; Lithostratigraphy ; Passive continental margin ; Tethys Himalaya ; Tibet
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract The 1500-m-thick marine strata of the Tethys Himalaya of the Zhepure Mountain (Tingri, Tibet) comprise the Upper Albian to Eocene and represent the sedimentary development of the passive northern continental margin of the Indian plate. Investigations of foraminifera have led to a detailed biozonation which is compared with the west Tethyan record. Five stratigraphic units can be distinguished: The Gamba group (Upper Albian - Lower Santonian) represents the development from a basin and slope to an outer-shelf environment. In the following Zhepure Shanbei formation (Lower Santonian - Middle Maastrichtian), outer-shelf deposits continue. Pebbles in the top layers point to beginning redeposition on a continental slope. Intensified redeposition continues within the Zhepure Shanpo formation (Middle Maastrichtian - Lower Paleocene). The series is capped by sandstones of the Jidula formation (Danian) deposited from a seaward prograding delta plain. The overall succession of these units represents a sea-level high at the Cenomanian/Turonian boundary followed, from the Turonian to Danian, by an overall shallowing-upward megasequence. This is followed by a final transgression — regression cycle during the Paleocene and Eocene, documented in the Zhepure Shan formation (?Upper Danian - Lutetian) and by Upper Eocene continental deposits. The section represents the narrowing and closure of the Tethys as a result of the convergence between northward-drifting India and Eurasia. The plate collision started in the Lower Maastrichtian and caused rapid changes in sedimentation patterns affected by tectonic subsidence and uplift. Stronger subsidence and deposition took place from the Middle Maastrichtian to the Lower Paleocene. The final closure of remnant Tethys in the Tingri area took place in the Lutetian.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02440107
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  • 5
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    Energetic electron-bunch generation in a phase-locked longitudinal laser electric field (2016)
    American Physical Society (APS)
    Details
    Publication Date: 2016-04-26
    Description: Author(s): K. D. Xiao, T. W. Huang, L. B. Ju, R. Li, S. L. Yang, Y. C. Yang, S. Z. Wu, H. Zhang, B. Qiao, S. C. Ruan, C. T. Zhou, and X. T. He Energetic electron acceleration processes in a plasma hollow tube irradiated by an ultraintense laser pulse are investigated. It is found that the longitudinal component of the laser field is much enhanced when a linear polarized Gaussian laser pulse propagates through the plasma tube. This longitud… [Phys. Rev. E 93, 043207] Published Mon Apr 25, 2016
    Keywords: Plasma Physics
    Print ISSN: 1539-3755
    Electronic ISSN: 1550-2376
    Topics: Physics
    Published by American Physical Society (APS)
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  • 6
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    Substantial DNA methylation differences between two major neuronal subtypes in human brain (2016)
    Oxford University Press
    Details
    Publication Date: 2016-04-08
    Description: The brain is built from a large number of cell types which have been historically classified using location, morphology and molecular markers. Recent research suggests an important role of epigenetics in shaping and maintaining cell identity in the brain. To elucidate the role of DNA methylation in neuronal differentiation, we developed a new protocol for separation of nuclei from the two major populations of human prefrontal cortex neurons—GABAergic interneurons and glutamatergic (GLU) projection neurons. Major differences between the neuronal subtypes were revealed in CpG, non-CpG and hydroxymethylation (hCpG). A dramatically greater number of undermethylated CpG sites in GLU versus GABA neurons were identified. These differences did not directly translate into differences in gene expression and did not stem from the differences in hCpG methylation, as more hCpG methylation was detected in GLU versus GABA neurons. Notably, a comparable number of undermethylated non-CpG sites were identified in GLU and GABA neurons, and non-CpG methylation was a better predictor of subtype-specific gene expression compared to CpG methylation. Regions that are differentially methylated in GABA and GLU neurons were significantly enriched for schizophrenia risk loci. Collectively, our findings suggest that functional differences between neuronal subtypes are linked to their epigenetic specification.
    Keywords: Chromatin and Epigenetics
    Print ISSN: 0305-1048
    Electronic ISSN: 1362-4962
    Topics: Biology
    Published by Oxford University Press
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  • 7
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    Genomic deletion induced by Tol2 transposon excision in zebrafish (2013)
    Oxford University Press
    Details
    Publication Date: 2013-01-20
    Description: Genomic deletions induced by imprecise excision of transposons have been used to disrupt gene functions in Drosophila . To determine the excision properties of Tol2 , a popular transposon in zebrafish, we took advantage of two transgenic zebrafish lines Et(gata2a:EGFP)pku684 and Et(gata2a:EGFP)pku760 , and mobilized the transposon by injecting transposase mRNA into homozygous transgenic embryos. Footprint analysis showed that the Tol2 transposons were excised in either a precise or an imprecise manner. Furthermore, we identified 1093-bp and 1253-bp genomic deletions in Et(gata2a:EGFP)pku684 founder embryos flanking the 5' end of the original Tol2 insertion site, and a 1340-bp deletion in the Et(gata2a:EGFP)pku760 founder embryos flanking the 3' end of the insertion site. The mosaic Et(gata2a:EGFP)pku684 embryos were raised to adulthood and screened for germline transmission of Tol2 excision in their F 1 progeny. On average, ~42% of the F 1 embryos displayed loss or altered EGFP patterns, demonstrating that this transposon could be efficiently excised from the zebrafish genome in the germline. Furthermore, from 59 founders, we identified one that transmitted the 1093-bp genomic deletion to its offspring. These results suggest that imprecise Tol2 transposon excision can be used as an alternative strategy to achieve gene targeting in zebrafish.
    Keywords: Chromatin and Epigenetics
    Print ISSN: 0305-1048
    Electronic ISSN: 1362-4962
    Topics: Biology
    Published by Oxford University Press
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  • 8
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    Large-charge quasimonoenergetic electron beams produced by off-axis colliding laser pulses in underdense plasma (2017)
    American Physical Society (APS)
    Details
    Publication Date: 2017-02-15
    Description: Author(s): Z. G. Deng, Z. M. Zhang, B. Zhang, S. K. He, J. Teng, W. Hong, K. G. Dong, Y. C. Wu, B. Zhu, and Y. Q. Gu Electrons can be efficiently injected into a plasma wave by colliding two counterpropagating laser pulses in a laser wakefield acceleration. However, the generation of a high-quality electron beam with a large charge is difficult in the traditional on-axis colliding scheme due to the growth of the e… [Phys. Rev. E 95, 023206] Published Tue Feb 14, 2017
    Keywords: Plasma Physics
    Print ISSN: 1539-3755
    Electronic ISSN: 1550-2376
    Topics: Physics
    Published by American Physical Society (APS)
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  • 9
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    Radiation from Shock-Accelerated Particles (2012)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: Plasma instabilities excited in collisionless shocks are responsible for particle acceleration, generation of magnetic fields , and associated radiation. We have investigated the particle acceleration and shock structure associated with an unmagnetized relativistic jet propagating into an unmagnetized plasma. Cold jet electrons are thermalized and slowed while the ambient electrons are swept up to create a partially developed hydrodynamic-like shock structure. The shock structure depends on the composition of the jet and ambient plasma (electron-positron or electron-ions). Strong electromagnetic fields are generated in the reverse , jet shock and provide an emission site. These magnetic fields contribute to the electron's transverse deflection behind the shock. We have calculated, self-consistently, the radiation from electrons accelerated in the turbulent magnetic fields. We found that the synthetic spectra depend on the Lorentz factor of the jet, its thermal temperature and strength of the generated magnetic fields. The detailed properties of the radiation are important for understanding the complex time evolution and/or spectral structure in gamma-ray bursts, relativistic jet shocks, and supernova remnants
    Keywords: Plasma Physics
    Type: M12-1864 , Gamma-Ray Bursts 2012 Conference (GRB2012); May 07, 2012 - May 11, 2012; Minich; Germany
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 10
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    Radiation from Relativistic Jets in Turbulent Magnetic Fields (2008)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: Using our new 3-D relativistic electromagnetic particle (REMP) code parallelized with MPI, we have investigated long-term particle acceleration associated with an relativistic electron-positron jet propagating in an unmagnetized ambient electron-positron plasma. The simulations have been performed using a much longer simulation system than our previous simulations in order to investigate the full nonlinear stage of the Weibel instability and its particle acceleration mechanism. Cold jet electrons are thermalized and ambient electrons are accelerated in the resulting shocks. The acceleration of ambient electrons leads to a maximum ambient electron density three times larger than the original value. Behind the bow shock in the jet shock strong electromagnetic fields are generated. These fields may lead to the afterglow emission. We have calculated the time evolution of the spectrum from two electrons propagating in a uniform parallel magnetic field to verify the technique.
    Keywords: Plasma Physics
    Type: M09-0294 , Sixth Huntsville Gamma-Ray Burst Symposium 2008; Oct 20, 2008 - Oct 23, 2008; Huntsville, AL; United States
    Format: application/pdf
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