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An Introduction to China High-Tech Research Project on Beyond 3G Mobile Communications FuTURE
You, Xiao-Hu,Pan, Zhi-Wen,Jameel, Ahmed J. The Korean Institute of Communications and Informa 2002 정보와 통신 Vol.19 No.7
This paper introduces the Future Technologies for Universal Radio Environment (FUTURE), which is China's wireless communications research project oriented to beyond 3G systems. The features and basic requirements of the FUTURE project are described, and the system structure, which is based on IPv6 core network, is proposed. The key techniques for FUTURE project are also addressed.
Bang, Je-Yong,Hu, Un-Bok,Kim, Hyea-Ju,You, Young-Han 한국환경생태학회 2015 한국환경생태학회지 Vol.29 No.1
In order to get basic data for flood plain restoration, we surveyed the woody vegetation in Korean natural rivers and analyzed the species' characteristics with regards to patterns of richness and diversity. These characteristics were higher in hard wood forests than those in soft wood forests, such as Salix spp. community. Futhermore, they were the highest in the Prunus sargentii-Pinus densiflora community(H' 1.095), and the lowest in the Carpinus laxiflora community(H' 0.118) among the hard wood forests. Species' richness diversity were the highest in the Salix gracilistyla community, but the lowest in the S. koriyangi community or S. koreensis community among the soft wood forests. With regards to the dominant index, just one community is over 0.9, 13 communities are between 0.3-0.7 and 15 communities are less than 0.3. The Salix koreensis community was the highest at 0.931, and Prunus sargentii-Pinus densiflora community was the lowest at 0.13. Species' richness and diversity was significantly correlated with tree layer coverages and degree of slope. These results mean that in order to increase plant species diversity in flood plains planted hard woody trees, such as oaks and fir, are needed to suit environmental conditions with steeper slope and lower canopy coverage.
Hu Wan,Yashu Zhang,Xiao Zhao,Hong You,Jian Hong Li,Jinyun Ji 한국응용곤충학회 2015 Journal of Asia-Pacific Entomology Vol.18 No.3
Insect cytokine growth-blocking peptides (GBPs) play functional roles in growth regulation and the innate immune response.Moreover, high concentrations of GBPs significantly induce larvalmorphological abnormalities and lethality. In the present study, a recombinant AcNPV, AcNPV-SeGBPm, expressing a growth-blocking peptide fromthe beet armywormSpodoptera exigua (SeGBP) under the control of a polyhedrin promoterwas constructed. Western blot analysis indicated that the mature peptide of SeGBP (SeGBPm) is expressed as a 3-kDa peptide in recombinant baculovirus-infected Sf9 insect cells. SeGBPm expression in Sf9 insect cells decreased cell viability significantly and induced apoptotic cell death. In addition, the body weights of S. exigua larvae inoculated with AcNPV-SeGBPm decreased significantly compared to those of larvae inoculated with wild-type AcNPV. Moreover, AcNPV-SeGBPm improved the rate of larvae killing (LT50) by approximately 1 day compared to wild-type AcNPV. Taken together, the obtained data demonstrate the great potential for future investigations of growth-blocking peptides for use as biopesticides.
Hu Wan,Miao Yuan,Hong You,Jianhong Li,진병래 한국응용곤충학회 2012 Journal of Asia-Pacific Entomology Vol.15 No.3
The leaf beetle, Gastrophysa atrocyanea, diapause-specific peptide (DSP), which plays a role in diapause,inhibits Ca2+ channels and has antifungal activity. Here, we show the molecular cloning and characterization of a diapause-specific peptide in the beet armyworm Spodoptera exigua. The S. exigua diapause-specific peptide (SeDSP) gene consists of only one exon encoding 63 amino acid residues. A comparative analysis showed that mature SeDSP consists of 40 amino acid residues including six cysteines, which are similar to those of S. littoralis Spodomicin and G. atrocyanea DSP. The SeDSP was expressed as a 4.5 kDa peptide in baculovirusinfected insect cells. SeDSP was constitutively expressed in the epidermis of S. exigua larvae and pupae after molting and metamorphosis. In addition, recombinant SeDSP showed antibacterial activity against Bacillus megaterium
Hu, Sheng-Peng,Xu, Cheng-Yan,Zhang, Bao-You,Pei, Yi,Zhen, Liang Korean Chemical Society 2014 Bulletin of the Korean Chemical Society Vol.35 No.10
Monodispersed $Bi_2O_2CO_3$ nanoplates with an average width of 320 nm and thicknesses of 50-90 nm were successfully synthesized by a simple solvothermal method in a mixture solution of polyethylene glycol and $H_2O$. The obtained nanoplates were characterized by means of XRD, FT-IR, SEM and TEM. The effect of surfactant sodium dodecyl benzene sulfonate on the morphology of $Bi_2O_2CO_3$ product was investigated. Under simulated solar light irradiation, $Bi_2O_2CO_3$ nanoplates exhibited superior photocatalytic activities towards the degradation of RhB as well as high chemical stability upon cycling photocatalytic test. The nanoplates also showed promising photodegradation ability for eliminating refractory pollutant of phenol. The excellent photocatalytic performance of $Bi_2O_2CO_3$ nanoplates as compared with P25-$TiO_2$ endows them as promising high efficiency photocatalysts.
Two New Phenolic Compounds from the Fruiting Bodies of Ganoderma tropicum
Hu, Li-Li,Ma, Qing-Yun,Huang, Sheng-Zhuo,Guo, Zhi-Kai,Guo, Jian-Chun,Dai, Hao-Fu,Zhao, You-Xing Korean Chemical Society 2013 Bulletin of the Korean Chemical Society Vol.34 No.3
Chemical investigation of the fruiting bodies of Ganoderma tropicum led to the isolation of two new phenolic compounds, ganodermatropins A (1) and B (2). Their structures were elucidated by spectroscopic techniques (MS, 1D and 2D NMR). Ganodermatropin A exhibited antimicrobial activity against Staphylococcus aureus.
Chemical Components of Dendrobium polyanthum
Hu, Jiang-Miao,Zhao, You-Xing,Miao, Ze-Hong,Zhou, Jun Korean Chemical Society 2009 Bulletin of the Korean Chemical Society Vol.30 No.9
A new tetrahydroanthracene, 3,6,9-trihydroxy-3,4-dihydroanthracen-1(2H)-one (1), six phenolics, moscatilin (2), gigantol (3), batatasin (4), moscatin (5), 9,10-dihydromoscatin (6), 10-dihydrophenanthrene-2,4,7-triol (7), and a sesquiterpenoid, corchoionoside C (8), together with two sterols $\beta$-sitosterol (9) and daucosterol (10), were isolated from the stems of Dendrobium polyanthum. Compounds 1 and 2 were assessed for cytotoxic activity against two human tumor cell lines (A549 and HL-60).