145 Result(s)
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Article
29Si magic-angle NMR spectroscopy of low-temperature ordered plagioclase feldspars
Plagioclase feldspars are among the most abundant silicate minerals in the Earth's crust, and yet their subsolidus phase relations remain, perhaps, the most enigmatic1. Their complex behaviour, which involves ord...
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An improved method for analysis of oxygen isotope in organic matter
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The high-temperature pyrolysis reaction of cellulose and organic matter have an optimal reaction condition: 9...
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Climatic change over the past 8 000 years in Caohai District, Guizhou
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Over the past 8 000 years, notable changes in moist regime and temperature took place in Caohai District. The...
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Viscosity solution to nonlinear H∞ control
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Biological effect of rare-earth elements on anti-oxidation enzymes in wheat under acid rain stress
Based on pot-culture experiments, the biological effect of rare-earth elements (REE) on antioxidation enzymes of wheat under acid rain stress was studied. The results show that both acid rain and REE can affec...
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Preparation of the selenomethionine derivative of tabtoxin resistance protein
In order to obtain phase information for the X-ray diffraction of tabtoxin resistance protein (TTR) crystal using the MAD phasing method, a selenomethionine (Se-Met) derivative of TTR was overexpressed inE. coli ...
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Drosophila Stardust interacts with Crumbs to control polarity of epithelia but not neuroblasts
Establishing cellular polarity is critical for tissue organization and function. Initially discovered in the landmark genetic screen for Drosophila developmental mutants1,2,3,4, bazooka, crumbs, shotgun and stard...
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Temperature variations in the past 6000 years inferred from δ18O of peat cellulose from Hongyuan, China
Trends of the temperature variations recorded in δ18O in Hongyuan peat cellulose are similar to those recorded in δ18O of **chuan peat cellulose and in δ18O of Dunde ice core. Climate events have been identified...
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Humification degrees of peat in Qinghai-**zang Plateau and palaeoclimate change
In this article we report a new and sensitive palaeoclimate proxy indicator-humification degrees of peat. Based on the comparison of humification degrees with other climate proxy records, such as λ13C time series...
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A marker for Stevens–Johnson syndrome
Stevens–Johnson syndrome and the related disease toxic epidermal necrolysis are life-threatening reactions of the skin to particular types of medication1,2,3. Here we show that there is a strong association in Ha...
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Comments on “the cause of crustal deformation in the vicinity of Zhangbei earthquake area”
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Immune responses of a designed HIV-1 DNA vaccine on rhesus monkeys
An effective HIV-1 vaccine will be the ultimate solution for the prevention of HIV/AIDS, though HAART plays important roles in treating the disease. In this study, a large-scale recombinant DNA plasmid contain...
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Interconnections between the Asian monsoon, ENSO, and high northern latitude climate during the Holocene
The article emphatically reviews the research progress in interconnections between the East Asian and Indian Ocean summer monsoons, between the Asian monsoon and the El Niño-Southern Oscillation (ENSO) activit...
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Stress uniformity process of specimens in SHPB test under different loading conditions of rectangular and half-sine input waves
Based on the characteristics of 1D waves, the stress uniformity process in specimens under different loading conditions of rectangular and half-sine input waves was analyzed in split Hopkinson pressure bar (SH...
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One-step and high-density protein immobilization on epoxysilane-modified silica nanoparticles
Silica nanoparticles are most commonly modified with amino-silanes, followed by post-modification activation for protein immobilization. In this work, epoxy-functionalized silica nanoparticles were prepared by...
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Open AccessEffects of high temperature annealing on the dislocation density and electrical properties of upgraded metallurgical grade multicrystalline silicon
High temperature annealing was performed on upgraded metallurgical grade multicrystalline silicon (UMG multi-Si) wafers with a purity of 99.999%. The samples were mechanically polished and chemically etched, a...
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Open AccessPI(4,5)P2 5-phosphatase A regulates PI3K/Akt signalling and has a tumour suppressive role in human melanoma
Inositol polyphosphate 5-phosphatases can terminate downstream signalling of phosphatidylinositol-3 kinase; however, their biological role in the pathogenesis of cancer is controversial. Here we report that th...
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Open AccessPerformance of breast cancer screening methods and modality among Chinese women: a report from a society-based breast screening program (SBSP) in Shanghai
To evaluate the screening performance of individual and combined use of clinical breast examination, ultrasonography and mammography in Chinese women, we conducted a biennial breast cancer screening program am...
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Open AccessRoll-to-roll fabrication of large scale and regular arrays of three-dimensional nanospikes for high efficiency and flexible photovoltaics
Three-dimensional (3-D) nanostructures have demonstrated enticing potency to boost performance of photovoltaic devices primarily owning to the improved photon capturing capability. Nevertheless, cost-effective...
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Open AccessMetal free half metallicity in 2D system: structural and magnetic properties of g-C4N3 on BN
Synthesis of a half metallic material on a substrate is highly desirable for diverse applications. Herein, we have investigated structural, adsorptive and magnetic properties of metal free graphitic carbon nit...