223 Result(s)
within
Life Sciences, general
**-** Ren
Article
Science, Humanities and Social Sciences, multidisciplinary
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Article
HREELS study on coadsorption of oxygen and cyclohexanone on the Pt(111) surface
The coadsorption of cyclohexanone and oxygen on Pt(111) has been investigated by HREE-LS and TDS. At 205 K the presence of oxygen induces an “extra” red-shift of the C = O stretching of coadsorbed cyclohexanon...
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Expression of biologically active human clotting factor IX (hF IX) in the mammary gland of transgenic mice
The DNA of human factor IX (hF IX) gene vector pMC IX m, which had been proven to be able to express inin vitro and living cells, was introduced into 586 zygotes of Kunming Whlte Mice by positive pressure microin...
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Should the K-Ar isotopic ages of olivine basalt be reconsidered?
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Modes of occurrence of arsenic in high-arsenic coal by extended X-ray absorption fine structure spectroscopy
The concentration ranges of As and Sb in six Late Permian high-arsenic coals collected from **ngren and **ngyi, Guizhou Province are 94.1 μg · g-1-3.2% and 8.1 μg · g-1-120 μg · g-1, respectively. Based on the mi...
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Photoconductivity of [60]fullerene derivatives
Two [60]fullerene derivatives (compounds 1 and 2) have been synthesized. Their redox properties have been measured by cyclic voltammetry. The photoconductivities of poly(N-vinylcarbazole) (PVK) doped with [60]...
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Laser microarea analysis of40Ar-39Ar isochron age for Fanshan superlarge alunite deposit, Zhejiang Province, China
Laser micro-area analysis40Ar-39Ar isochron dating for pure alunite is first reported. Microarea40Ar-39Ar isochron dating results revealed that the metallogenetic epoch of Fanshan superlarge alunite deposit is 74...
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Evidence for transforming mineralization of Baiguoyuan silver-vanadium deposit hosted in black shale in Hubei, China
Baiguoyuan silver-vanadium deposit is generally thought to be of sedimentary-diagenetic origin. Based on the characteristics of barites, it is suggested that hydrothermal transformation has been involved in mi...
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Spatial pattern in the foraging group of Sichuan golden monkeys
One of the major social-biological characteristics in the genusRhinopithecus is that the animals live in large groups of tens to hundreds of individuals. Study of the distribution pattern of various age-sex class...
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Mutational effect of the “- 35” element of sorghumpsbA gene promoter
Mutations of the first position T and the third position G in TTGACA, the “- 35” element of sorghumpsbA gene promoter, were induced using chemically synthesized 20 nt oligonucleotide primer. Three mutants were pr...
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Article
Climatological significance of an ice core net-accumulation record at Mt. Qomolangma (Everest)
An ice core record at Mt. Qomolangma (Everest) since 1954 reveals a sharp decline in net-accumulation in the 1960s, and the annual net-accumulation during the 1970s to the beginning of the 1990s is only half o...
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Profiling gene expression patterns of nasopharyngeal carcinoma and normal nasopharynx tissues with cDNA microarray
5 μg of total RNAs from normal nasopharynx and nasopharyngeal carcinoma tissue have been labeled with α-32P-dCTP during reverse transcription. The synthesized cDNA probes have been hybridized to high-density cDNA...
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Global pollution shown by lead and cadmium contents in precipitation of polar regions and Qinghai-Tibetan Plateau
The analysis of the major ions, lead and cadmium has been performed for snow-pit samples collected from the Arctic, the Qinghai-Tibetan Plateau and the Antarctic Ice Sheet. These snow pits were excavated respe...
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Specific immune responses induced by a multi-epitope antigen of hepatitis C virus in mice and rabbits
Five highly conserved and immunogenic epitopes of hepatitis C virus (HCV) have been chosen to form a multi-epitope antigen gene and fused with β-galactosidase gene to express a hybrid GZ-PCX antigen, which cou...
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Active regions’ setting of the extracellular ligandbinding domain of human interleukin-6 receptor
The reliable three dimensional (3-D) structure of the extracellular ligand-binding domain (V106-P322) of human interleukin-6 receptor (hIL-6R) has been constructed by means of computer-guided homology modeling...
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Article
Dispersion characteristics of fine particles in water, ethanol and kerosene
Dispersion behavior of hydrophilic calcium carbonate particles and hydrophobic talcum particles in water, ethanol and kerosene media has been studied by sedimentation analysis. It is found that the dispersion ...
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Polymerization of fluorescent analogue of plant actinin vitro andin vivo
Maize pollen actin has been labeled with Oregon Green 488 iodoacetamide. A yield of 3 mg fluorescent actin analogue has been obtained from 10 mg of maize pollen actin, which is 99% in purity and the dye/protei...
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Effects of nitrogen ion implantation on lily pollen germination and the distribution of the actin cytoskeleton during pollen germination
The effects of low energy nitrogen ion implantation on lily (Lilium davidii Duch.) pollen germination and the distribution of the actin cytoskeleton during pollen germination have been studied. Preliminary result...
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In vitro assembly of plant tubulin in the absence of microtubule-stabilizing reagents
The assembly of microtubules is essential for physiological functions of microtubules. Addition of microtubule-stabilizing reagents or microtubule “seeds” is usually necessary for plant tubulin assemblyin vitro, ...
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Cloning of a novel gene associated with human nasopharyngeal carcinoma
One EST N27741 with high expression in normal adult nasopharynx tissues but low expression in adult poorly differentiated squamous nasopharyngeal carcinoma has been selected out by the high-density cDNA array ...
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Identification of two metallothionein isoforms by molecular cloning of their cDNAs in fresh-water fish, crucian carp (Carassius-cuvieri)
Generally, there are two major isoforms of metallothionein (MT) in mammals. In this study two cDNAs of metallothionein, MT-A and MT-B, in a fresh-water fish, crucian carp (Carassius cuvieri), were cloned by the r...
