4,578 Result(s)
within
Zheng-**ong **
Science, Humanities and Social Sciences, multidisciplinary
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Article
The **gaze ophiolite (Tibet): a peculiar oceanic lithosphere
The **gaze ophiolite which outcrops along the Yarlung Zangbo river, southern Tibet, locally displays a complete ophiolitic sequence from marine sedimentary cover over basaltic volcanics to the north, to fresh ...
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Article
Abundance variation of iridium and trace elements at the Permian/Triassic boundary at Shangsi in China
Despite recent searches for anomalous iridium(Ir) concentrations at the Permian/Triassic boundary (P/Tr) of marine sediments1–3, no Ir above a level of 0.5 p.p.b. (parts per 109) has been found. Detailed event–st...
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Article
Efficient photovoltaic devices for InP semiconductor/liqud junctions
AN alternative to conventional solid-state photovoltaic devices is the semiconductor/liquid junction. Liquid-junction cells not only offer the possibility of integrating energy conversion and storage functions1, ...
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Chapter
The Decomposition of (A,B)-Invariant Subspaces and Its Applications
In this paper, (A,B)-radical subspaces are defined and the (A,B)invariant subspaces are decomposed into a direct sum of radical subspaces. With such a decomposition, it is found that the (A,B)-invariant subspa...
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Article
Evolution of the MHC class I genes of a New World primate from ancestral homologues of human non-classical genes
THE products of the classical human major histocompatibility complex (MHC) class I genes (HLA-A, -B, -C) are highly polymorphic molecules that bind peptides and present them to T lymphocytes1–4. The non-polymorph...
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Article
Binding of chaperonins
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Article
T-complex polypeptide-1 is a subunit of a heteromeric particle in the eukaryotic cytosol
THE murine t-complex encodes t-complex polypeptide-1 (TCP1)1, which is constitutively expressed in almost all cells, and upregulated during spermatogenesis2,3. Mammalian sequences have >96% identity with each oth...
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Article
A plate-tectonic speed limit?
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Article
Protective effects of oligosaccharides in P-selectin-dependent lung injury
NEUTROPHIL recruitment into tissues is a multistep process involving sequential engagement of adhesion molecules, including selectins (E,P,L), which are reactive with oligosaccharides, and the family of (β2 in...
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Article
Apoptotic signals delivered through the T-cell receptor of a T-cell hybrid require the immediate–early gene nur77
ENGAGEMENT of the T-cell antigen receptor (TCR) on immature thymic T cells induces death by apoptosis1–3. Although several lines of evidence indicate that apoptosis requires de novo gene expression, little is kno...
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Article
Turning of nerve growth cones induced by neurotransmitters
PATHFINDING by growing nerve processes in the develo** nervous system depends on the turning response of the growing tip, the growth cone, to extracellular guidance cues1–4. There is evidence in vivo and in cel...
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Article
Therapeutic potentiation of the immune system by costimulatory Schiff-base-forming drugs
IMMUNE responses are orchestrated by CD4 T lymphocytes, which receive a cognitive signal when clonally distributed receptors are occupied by major histocompatibility complex (MHC) class II-bound peptides on a...
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Article
Nucleation of microtubule assembly by a γ-tubulin-containing ring complex
The highly conserved protein γ-tubulin is required for microtubule nucleation in vivo. When viewed in the electron microscope, a highly purified γtubulin complex from Xenopus consisting of at least seven diffe...
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Article
Three distinct signalling responses by murine fibroblasts to genotoxic stress
GENOTOXIC stress triggers signalling pathways that mediate either the protection or killing of affected cells. Whereas induction of p53 involves events in the cell nucleus1, the activation of transcription factor...
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Article
Decreased apoptosis in the brain and premature lethality in CPP32-deficient mice
PROGRAMMED cell death (apoptosis) is a prominent feature of the development of the immune and nervous systems1,2. The identification of the Caenorhabditis elegans cell death gene, ced-3, as a prototype of the int...
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Article
Investigation on reactions of α-cyanodiphenylmethide carbanion with polyhalomethanes
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Article
Vitrificational cryopreservation and subsequently fertile plant regeneration from rice (Oryza sativa L.) embryogenic suspension cells
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Article
Carbon isotope anomaly in marbles associated with eclogites from the Dabie Mountains
This is a report of carbon isotope anomaly in marbles associated with the UHP eclogites from the Dabie Mountains. The results place constraints on the degree of crust-mantle interaction during the UHP metamorp...
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Article
Point defects in active layers of TFEL devices based on ZnS
Point defects in the active layer of a layered optimization thin film electroluminescent device of ZnS; Er3+ were studied. The results indicate that besides Er3+ substituting for Zn2+ as luminescent centers, the ...
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Article
Monsoon regions: The highest rate of precipitation changes observed from global data
The global dibtributiorls of the rale of precipitation change at seasonal, interannual and interdeadel scales are computed from the observed global data sets. The analysis has revealed that the monscnn regions...
