263 Result(s)
within
Yanjun **
Science, Humanities and Social Sciences, multidisciplinary
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Article
The δ18O variation of a stalagmite from Qixing Cave, Guizhou Province and indicated climate change during the Holocene
A stalagmite from Qixing Cave, Guizhou Province was dated with the TIMS U-series method and its oxygen isotope composition was analyzed. On the basis of the ages and the variations of the δ18O of the stalagmite, ...
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Article
B→O blood conversion
To maintain a constant supply of “universal blood type”, or group O red blood cells, has benefit in specialized transfusion condition. In this study, α-galactosidase cDNA was cloned from Catimor coffee bean gr...
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Article
Phylogeny of SARS-CoV as inferred from complete genome comparison
SARS-CoV, as the pathogeny of severe acute respiratory syndrome (SARS), is a mystery that the origin of the virus is still unknown even a few isolates of the virus were completely sequenced. To explore the gen...
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Article
Photocatalytic effect of nature and modified V-bearing rutile
A natural rutile TiO2, which displays photocatalysis on degrading halohydrocarbon pollutants, was reported. The rutile contains up to 1.22% V2O5 (weight percent). Substitutions of Ti by V, as well as Fe, Cu and Z...
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Article
Influence of nano-MgO particle size on bactericidal action againstBacillus subtilis var. niger
Nano-MgO with various particle sizes, synthesized by different methods using Mg(NO3)2·6H2O, Na2CO3, Na2SO4, urea and ammonia solution as reactants, was used to carry out bactericidal experiments onBacillus subtil...
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Article
Effect of dead carbon on the14C dating of the speleothem
Based on the comparison of dating results among high-precision TIMS U-series and AMS14C as well as the published14C dating results and their band counting ages (i.e. calendar ages), this paper discusses the effec...
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Article
Subharmonic and ultraharmonic emissions based on the nonlinear oscillation of encapsulated microbubbles in ultrasound contrast agents
Subharmonics or ultraharmonics provides better contrast-to-tissue ratio (CTR) than the fundamental or the second harmonics, having prospective application in medical diagnosis. In this paper, subharmonic and u...
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Article
Down-regulation of αGal epitopes by co-transfection of α1,3-galactosidase gene and α1,2-fucosyltransferase gene
The polycarbohydrate structure of Galα1-3Galβ1-4GluNAc-R (known as αGal epitopes of xenoantigen), produced by α1-3-galactosyltransferase (α1,3-GT) in the course of animal development, is the major xenoantigen ...
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Article
Preparation and photochromic properties of NiAl-NO3-LDHs/LDPE composite
Nanoscale NiAl-NO3-LDHs with good crystallinity have been synthesized by a method, Separate Nucleation and Aging Steps (SNAS). An NiAl-NO3-LDHs/LDPE composite was prepared by blending NiAl-NO3-LDHs and LDPE in a ...
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Article
Synthesis of CaCO3 crystals using hydroxypropylmethyl cellulose hydrogel as template
Calcium carbonate crystallization was performed in hydrogel of hydroxypropylmethyl cellulose (HPMC). Results showed that the polyhydroxy functionalities in HPMC gel network facilitated the nucleation of aragon...
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Article
Structural basis for recognition of hemi-methylated DNA by the SRA domain of human UHRF1
DNA methylation is a key epigenetic process and the faithful maintenance of DNA methylation patterns is essential to the wellbeing of mammalian cells. This means that cells need a mechanism to identify the par...
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Article
Impacts of intraseasonal oscillation on the onset and interannual variation of the Indian summer monsoon
The role of the intraseasonal oscillation (ISO) on the seasonal and interannual variations of the Indian summer monsoon is investigated based on the analysis of observational data. It is shown that the ISO sig...
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Article
The Homo sapiens Cave hominin site of Mulan Mountain, Jiangzhou District, Chongzuo, Guangxi with emphasis on its age
One of the most hotly debated and frontal issues in paleoanthropology focuses on the origins of modern humans. Recently, an incomplete hominin mandible with a distinctly weaker mental protuberance than modern ...
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Article
Open AccessApplication and safety assessment for nano-composite materials in food packaging
The technical breakthroughs and rapid developments in nanotechnologies enabling goods and products based on nanomaterials (NMs) has come to media and public attention as potentially one of the most significant...
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Article
Open AccessInterplay between the Westerlies and Asian monsoon recorded in Lake Qinghai sediments since 32 ka
Two atmospheric circulation systems, the mid-latitude Westerlies and the Asian summer monsoon (ASM), play key roles in northern-hemisphere climatic changes. However, the variability of the Westerlies in Asia a...
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Article
Biological features of novel avian influenza A (H7N9) virus
An initial characterization of the receptor-binding properties of the novel avian influenza A (H7N9) shows that the virus has acquired the ability to bind human receptors while retaining the ability to bind av...
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Article
Open AccessQuantitative epigenetic co-variation in CpG islands and co-regulation of developmental genes
The genome-wide variation of multiple epigenetic modifications in CpG islands (CGIs) and the interactions between them are of great interest. Here, we optimized an entropy-based strategy to quantify variation ...
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Article
Open AccessNetwork Analysis Reveals Functional Cross-links between Disease and Inflammation Genes
Connections between inflammation and diseases are suggested important in understanding the genetic mechanisms of diseases. However, studies on the functional cross-links between inflammation and disease genes ...
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Article
LA-ICP-MS U–Pb geochronology of detrital zircons from the Zhaochigou Formation-complex in the Helan Mountain and its tectonic significance
This paper carries out studies about LA-ICP-MS U–Pb dating and Hf isotopic compositional analysis for detrital zircons in two metasedimentary samples that were taken from the Zhaochigou Formation-complex in th...
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Open AccessCyclic precipitation variation on the western Loess Plateau of China during the past four centuries
Precipitation variation on the Loess Plateau (LP) of China is not only important for rain-fed agriculture in this environmentally sensitive region, but also critical for the water and life securities over the ...
