• Title/Summary/Keyword: BM

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High-Speed Low-Complexity Reed-Solomon Decoder using Pipelined Berlekamp-Massey Algorithm and Its Folded Architecture

  • Park, Jeong-In;Lee, Ki-Hoon;Choi, Chang-Seok;Lee, Han-Ho
    • JSTS:Journal of Semiconductor Technology and Science
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    • v.10 no.3
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    • pp.193-202
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    • 2010
  • This paper presents a high-speed low-complexity pipelined Reed-Solomon (RS) (255,239) decoder using pipelined reformulated inversionless Berlekamp-Massey (pRiBM) algorithm and its folded version (PF-RiBM). Also, this paper offers efficient pipelining and folding technique of the RS decoders. This architecture uses pipelined Galois-Field (GF) multipliers in the syndrome computation block, key equation solver (KES) block, Forney block, Chien search block and error correction block to enhance the clock frequency. A high-speed pipelined RS decoder based on the pRiBM algorithm and its folded version have been designed and implemented with 90-nm CMOS technology in a supply voltage of 1.1 V. The proposed RS(255,239) decoder operates at a clock frequency of 700 MHz using the pRiBM architecture and also operates at a clock frequency of 750 MHz using the PF-RiBM, respectively. The proposed architectures feature high clock frequency and low-complexity.

$F(ab)_2$-ELISA for the Detection of Nuclear Polyhedrosis Virus of Silk-worm, Bombyx mori L.

  • Sivaprasad, V.;Nataraju, B.;Baig, M.;Samson, M.V.;Datta, R.K.
    • International Journal of Industrial Entomology and Biomaterials
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    • v.6 no.2
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    • pp.179-181
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    • 2003
  • $F(ab`)_2$-ELISA and direct antigen coating-ELISA (DAC-ELISA) were evaluated in the detection of purified Bombyx mori nuclear polyhedrosis virus (BmNPV) and nuclear polyhedrosis virus infection in silkworm larvae inoculated with BmNPV polyhedra. Although nanogram levels of BmNPV was detected in both DAC- and $F(ab`)_2$-ELISA, similar concentrations of antigen was detected in case of F(ab’)$_2$-ELISA even at higher dilution of antibody (up to 1 : 20 K). One hundred percent nuclear polyhedrosis infection was detected 6 hrs after inoculation in BmNPV infected silkworm larvae by $F(ab`)_2$-ELISA. On the other hand, detection of 100% infection was observed only three days after inoculation in DAC-ELISA. In this study, it was observed $F(ab`)_2$-ELISA was more sensitive than DAC-ELISA in the detection of purified BmNPV as well as nuclear polyhedrosis infection in silkworm larvae.

Design and characteristics of 10Gbps$\times$64 ch. wavelength multiplexed optical signal amplification unit with 1530~1560 nm and 1570~1600 nm gain band (1530~1560nm와 1570~1600nm의 이득 대역을 갖는 10Gbps$\times$64채널 파장 다중화된 광신호 증폭 유니트의 설계 및 특성 측정)

  • 이정찬;정희상;주무정;김광준;이종현
    • Korean Journal of Optics and Photonics
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    • v.12 no.3
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    • pp.200-204
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    • 2001
  • The structural design and the measured characteristics of optical signal amplification unit for 640 Gbps (10 Gbps$\times$64 ch.) WDM transmission systems are reported. The unit is composed of two sub gain block units for the amplification of C-band (1530-1560 nm) and L-band (1570-1600 nm), respectively. Programmable microprocessors monitor the states of operation and optimize the optical output conditions. Each sub gain block unit can maintain total optical output power of +21 dBm with gain flatness of < 1 dB and noise figure of <7.2 dB for the input power in the dynamic range from-5 to +1 dBm.+1 dBm.

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Molecular Docking Studies of Wolbachia Endosymbiont of Brugia Malayi's Carbonic Anhydrase Using Coumarin-chromene Derivatives Towards Designing Anti-filarial Agents

  • Malathy, P.;Jagadeesan, G.;Gunasekaran, K.;Aravindhan, S.
    • Journal of Integrative Natural Science
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    • v.9 no.4
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    • pp.268-274
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    • 2016
  • Filariasis causing nematode Brugia malayi is shown to harbor wolbachia bacteria as symbionts. The sequenced genome of the wolbachia endosymbiont from B.malayi (wBm) offers an unprecedented opportunity to identify new wolbachia drug targets. Hence the enzyme carbonic anhydrase from wolbachia endosymbiont of Brugia malayi (wBm) which is responsible for the reversible interconversion of carbon dioxide and water to bicarbonate and protons (or vice versa) is chosen as the drug target for filariasis. This enzyme is thought to play critical functions in bacteria by involving in various steps of their life cycle which are important for survival, The 3D structure of wBm carbonic anhydrase is predicted by selecting a suitable template using the similarity search tool, BLAST. The BLAST results shows a hexapeptide transferase family protein from Anaplasma phagocytophilum (PDB ID: 3IXC) having 77% similarity and 54% identity with wBm carbonic anhydrase. Hence the above enzyme is chosen as the template and the 3D structure of carbonic anhydrase is predicted by the tool Modeller9v7. Since the three dimensional structure of carbonic anhydrase from wolbachia endosymbiont of Brugia malayi has not yet solved, attempts were made to predict this protein. The predicted structure is validated and also molecular docking studies are carried out with the suitable inhibitors that have been solved experimentally.

Enhanced Production of Chlorella ovalis and Dunaliella parva by the Rates of Medium Composition Obtained from the Fermented Animal Wastewater Including a Natural Substitute Chelator for EDTA (EDTA 대체용 천연 킬레이팅제를 함유한 발효 축산폐수의 배지조성률에 따른Chlorella ovalis와 Dunaliella parva의 생산성 강화)

  • Jeon, Seon-Mi;Jeune, Kyung-Hee;Kim, Mi-Kyung
    • ALGAE
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    • v.21 no.3
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    • pp.333-341
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    • 2006
  • The productivities of Chlorella ovalis and Dunaliella parva were influenced by the rates of medium compositions obtained from the fermented animal wastewater (BM: bacteria mineral water) including a natural substitute chelator for EDTA (etylenediaminetetraacetic acid). The most favorable medium was -E+50 adding 50% BM in f/2 medium instead of EDTA, a chemical chelator, which increased more 19-fold of cell density in C. ovalis and 7-fold in D. parva than cells cultured on f/2 medium as well as the enhancements of chlorophyll a (f/2-E: 0.26 g L–1, -E+50: 1.5 g L–1 in C. ovalis; f/2-E: 2.7 g L–1, -E+50: 15 g L–1 in D. parva) and the increase of maximal PSII quantum yields. These results were verified that the BM could play an important part as a natural chelator substituted for EDTA. In the fields of biotechnology, food organisms in fishery and eco-industries of CO2 sequestration in air and nutrient removal in water, the natural chelator of BM could be applied to enhance the biomass of the other microalgae.

Comparison of Postmortem Proteolysis between Breast and Leg Muscles in Chiayi Native Chickens

  • Cha, Shih-Ting;Tseng, Tsai-Fuh;Ho, Sy-Shyan;Chou, Rong-Ghi R.
    • Asian-Australasian Journal of Animal Sciences
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    • v.15 no.5
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    • pp.721-724
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    • 2002
  • Postmortem Proteolysis of breast (BM) and leg (LM) muscles in Chiayi native chickens at $5^{\circ}C$ were compared. Myofibrils were purified from BM and LM samples that were randomly taken from carcasses after 0, 1, 3, 7 and 14 days of storage at $5^{\circ}C$. Fragmentation of myofibrils were determined, and degradation of myofibrillar proteins were analyzed by the SDS-PAGE and western blots. The results showed that myofibril fragmentation index (MFI) was significantly (p<0.05) higher in BM than in LM samples. Disappearance of titin and nebulin and appearance of the 30 kDa component were more rapidly as seen on SDS-PAGE in BM than in LM samples. Western blots labeled with a monoclonal antibody to desmin also demonstrated that desmin degraded more quickly in BM samples. Our data suggested that postmortem proteolysis occurred more rapidly in breast muscles in Chiayi native chickens.

A Study on Design of Reflector Type Frequency Doubler in K-Band (리플렉터 형태의 K-대역 주파수 체배기 구현에 관한 연구)

  • Han, Sok-Kyun;Choi, Hyung-Ha
    • Journal of Navigation and Port Research
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    • v.28 no.1
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    • pp.37-41
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    • 2004
  • In this paper, a reflector type frequency doubler for local oscillator at 24GHz is designed and fabricated with ne71300-N MESFET. Optimum source and load impedances are decided through a multiharmonic load pull simulation technique. A conversion gain can be improved using the reflector and fundamental and third harmonics are well suppressed with open stub of $\lambda$/4 length Measured results show output power at 0dBm of input power is -3.776dBm, conversion gain 0.736dB, harmonic suppression 41.064dBc, respectively.

Estimation of Heterosis and Combining Ability in Hybrids between Resistant and Susceptible Bivoltine Breeds of Silkworm Bombyx mori to Densonucleosis Virus1 (BmDNV1)

  • Rao, P. Sudhakara;Nataraju B.;Balavenkatasubbaiah M.;Dandin S.B.
    • International Journal of Industrial Entomology and Biomaterials
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    • v.13 no.2
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    • pp.73-77
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    • 2006
  • Combining ability and hybrid vigour analysis was carried out in hybrids between newly developed non-susceptible lines to BmDNV1 and popular bivoltine breeds for certain quantitative traits viz. Pupation rate, Cocoon yield, Cocoon weight, Cocoon shell weight and Cocoon shell ratio, Survival rate against BmIFV and BmNPV. General combining ability (GCA) effects revealed that among the lines CSR2DR was found good general combiner exhibiting significant GCA effects for six characters, out of seven traits evaluated. Among testers CSR28DR was found as good combiner exhibiting significant GCA effects for six traits. Out of 36 hybrids made between $resistant{\times}resistant,\;resistant{\times}susceptible\;and\;susceptible{\times}susceptible$ breeds, one hybrid $CSR21DR{\times}CSR28DR$ exhibited significant SCA effects for six traits. The selected hybrid $CSR21DR{\times}CSR28DR$ also exhibited significant positive heterosis and heterobeltiosis expressions for maximum traits and could be exploited as commercial silkworm hybrid resistant to important viral diseases.

A Study on the Design and Fabrication of RF Receiver Module for IMT-2000 Handset (IMT-2000단말기용 RF 수신모듈 설계 및 제작에 관한 연구)

  • 이규복;송희석;박종철
    • Journal of the Microelectronics and Packaging Society
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    • v.7 no.3
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    • pp.19-25
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    • 2000
  • In this paper, we describe RF receiver module for IMT-2000 handset with 5 MHz channel bandwidth. The fabricated RF receiver module consists of Low Noise Amplifier, RF SAW filter, Down-converter, If SAW filter, AGC and PLL Synthesizer. The NF and IIP3 of LNA is 0.8 dB, 3 dBm at 2.14 GHz, conversion gain of down-converter is 10 dB, dynamic range of AGC is 80 dB, and phase noise of PLL is -100 dBc at 100 kHz. The receiver sensitivity is -110 dBm, adjacent channel selectivity is 48 dBm.

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Comparative Study on Trichoplusia ni Tn 5B1-4 Cells and Bombyx mori BmN Cells for Recombinant Endostatin Production

  • Sohn, Bong-Hee;Lee, Jong-Min;Kang, Pil-Don;Lee, Sang-Uk;Kim, Yong-Soon;Chung, In-Sik
    • International Journal of Industrial Entomology and Biomaterials
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    • v.7 no.2
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    • pp.197-201
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    • 2003
  • The recombinant plasmids harboring a heterologous gene coding mouse endostatin were transfected and expressed stably in Trichoplusia ni Tn 5B1-4 cells and Bombyx mori BmN cells, respectively. Recombinant endostatin expressed in the stably transformed Tn 5B1-4 and BmN cells was secreted into the medium. BmN cells are relatively lower in maximum cell growth and recombinant endostatin production than Tn 5B 1-4 cells. Recombinant endostatin was also purified to homogeneity using a simple one-step ${Ni^2+}$ affinity fractionation method. Purified recombinant endostatin inhibited endothelial cell proliferation in a dose-dependent manner. The concentration at half-maximum inhibition $({ED_50})$ for recombinant endostatin was approximately 0.35 ${\mu}g$/ml.