23,746 research outputs found
Quadraticossus fangi Wang & Ren 2007
No full textQuadraticossus fangi Wang & Ren, 2007 (Fig. 3) 2007 Quadraticossus Wang Y & Ren, p. 41. figure 1 (A–F) Remarks. This species was erected based on both complete forewings and hind wings (Wang & Ren, 2007 a). After re-examining part and counterpart of the holotype, we have reconstructed the hind wing of Q. fangi (Fig. 3). Sc and R are similar to those of Q. eumorphus: Sc parallel with R at base, fused with R at point of origin of Rs, then confluent with R 1 + 2 for short interval, then extended to costal margin at indentation.Published as part of Wang, Ying, Wang, Lin & Ren, Dong, 2008, Revision of genera Quadraticossus, Martynovocossus and Fletcheriana (Insecta, Hemiptera) from the Middle Jurassic of China with description of a new species, pp. 56-64 in Zootaxa 1855 on page 59, DOI: 10.5281/zenodo.18352
Self-Assembled Water-Soluble Cobalt Porphyrin Monolayers at Gold Electrodes with High Electrocatalysis of 2-Mercaptoethanol Oxidation
No full text[[abstract]]We reported the study on the preparation and the electrocatalytic properties of self-assembled monolayers of a water-soluble cobalt(III) meso-tetrakis(N- methyl-4-pyridyl) porphyrin (CoTMPyP) on gold disk. Cyclic voltammetry showed that the modified electrode is stable, lowers the overpotentials and improves the electrochemical oxidation of 2-mercaptoethanol in 0.1 M NaOH solutions, as compared to the bare Au. Absorption spectral results showed that Co(III/II) center of CoTMPyP involved in the oxidation reactions. The electrocatalytic reaction mechanisms were proposed.[[note]]SC
The internalized CdSe/ZnS quantum dots impair the chondrogenesis of bone marrow mesenchymal stem cells
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Zebrafish peptidoglycan recognition protein SC (zfPGRP-SC) mediates multiple intracellular signaling pathways
No full textInsect PGRPs can function as bacterial recognition molecules triggering proteolytic and/or signal transduction pathways, with the resultant production of antimicrobial peptides. To explore if zebrafish peptidoglycan recognition protein SC (zfPGRP-SC) has such effects, RNA interference (siRNA) and high-density oligonucleotide microarray analysis were used to identify differentially expressed genes regulated by zfPGRP-SC. The mRNA levels for a set of genes involved in Toll-like receptor signaling pathway, such as TLRs, SARM, MyD88, TRAF6 and nuclear factor (NF)-kappa B2 (p100/p52), were examined by quantitative RT-PCR (QT-PCR). The results from the arrays and QT-PCR showed that the expression of 133 genes was involved in signal transduction pathways, which included Toll-like receptor signaling, Wnt signaling, BMP signaling, insulin receptor signaling, TGF-beta signaling, GPCR signaling, small GTPase signaling, second-messenger-mediated signaling, MAPK signaling, JAK/STAT signaling, apoptosis and anti-apoptosis signaling and other signaling cascades. These signaling pathways may connect with each other to form a complex network to regulate not just immune responses but also other processes such as development and apoptosis. When transiently over-expressed in HEK293T cells, zfPGRP-SC inhibited NF-kappa B activity with and without lipopolysacharide (LPS) stimulation. (C) 2008 Elsevier Ltd. All rights reserved.Insect PGRPs can function as bacterial recognition molecules triggering proteolytic and/or signal transduction pathways, with the resultant production of antimicrobial peptides. To explore if zebrafish peptidoglycan recognition protein SC (zfPGRP-SC) has such effects, RNA interference (siRNA) and high-density oligonucleotide microarray analysis were used to identify differentially expressed genes regulated by zfPGRP-SC. The mRNA levels for a set of genes involved in Toll-like receptor signaling pathway, such as TLRs, SARM, MyD88, TRAF6 and nuclear factor (NF)-kappa B2 (p100/p52), were examined by quantitative RT-PCR (QT-PCR). The results from the arrays and QT-PCR showed that the expression of 133 genes was involved in signal transduction pathways, which included Toll-like receptor signaling, Wnt signaling, BMP signaling, insulin receptor signaling, TGF-beta signaling, GPCR signaling, small GTPase signaling, second-messenger-mediated signaling, MAPK signaling, JAK/STAT signaling, apoptosis and anti-apoptosis signaling and other signaling cascades. These signaling pathways may connect with each other to form a complex network to regulate not just immune responses but also other processes such as development and apoptosis. When transiently over-expressed in HEK293T cells, zfPGRP-SC inhibited NF-kappa B activity with and without lipopolysacharide (LPS) stimulation. (C) 2008 Elsevier Ltd. All rights reserved
Estudo hidrossedimentológico da bacia hidrográfica do Rio Negrinho - SC com o modelo SWAT
Full text linkDissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia AmbientalO município de Rio Negrinho vem sofrendo com alteração da quantidade e qualidade da água devido a substituição da mata nativa por reflorestamento de pinus e acelerada urbanização. Visto isso, o presente estudo teve como objetivo analisar espacialmente os processos hidrossedimentológicos na bacia do Rio Negrinho - SC através do modelo SWAT. Foram realizado o monitoramento hidrossedimentológico, formação de banco de dados espaciais e tabulares, determinação das sub-bacias, calibração e validação do modelo, análises estatísticas, avaliação espacial da produção de água e de sedimentos e verificação da tolerância de perda de solos nas sub-bacias. Os dados simulados pelo modelo foram comparados com os dados observados de vazão em dois pontos de monitoramento da bacia e os dados de concentração de sedimento em um ponto da bacia. O desempenho do modelo foi analisado a partir do NASH (coeficiente de Nash-Sutcliffe), R2 (coeficiente de correlação), Erro médio (EM) e CMR (Coeficiente de massa residual). Os valores de NASH variaram de 0,48 a 0,61 para dados de vazão e 0,43 para dados de sedimento. Analisando o balanço hídrico da bacia o coeficiente de variação da precipitação, vazão e evapotranspiração mensal foi de 23%, 20% e 30% respectivamente. Já o armazenamento de água no solo variou muito pouco ao longo do ano, apresentando coeficiente de variação de 8,7%. Comparada a tolerância de perda de solos com os dados de produção de sedimento da bacia foi possível evidenciar que 11% da área da bacia apresentaram produção de sedimento maior que a tolerância.The Rio Negrinho city has been suffering from the quantitative and qualitative modification of water due to replacement of native forests by pine tree reforestation and accelerated urbanization. The objective of the present study was, therefore, to spatially analyze hydrosedimentological processes in the Negrinho river basin # SC through the SWAT model. Hydrosedimentological monitoring, construction of spatial databases and table, determination of sub-basins, the model calibration and validation, statistical analysis, spatial assessment of water and sediment yield and verification of soil loss tolerance in each sub-basin were carried out. The values simulated with the model were compared with the observed data of discharge at two monitoration points and of sediment concentration at one point in the basin. The model performance was evaluated with the coefficient of Nash-Sutcliffe (NASH), the correlation coefficient (R2), the average error (MS) and coefficient of residual mass (CRM). The NASH values were from 0.48 to 0.61 for the discharge data and 0.43 for the sediment data. Analyzing the water balance of the basin the coefficient of variation of the monthly precipitation, evapotranspiration and flow were 23%, 20% and 30%, respectively. The water storage in the soil varied little throughout the year, showing its coefficient of variation of 8.7%. Comparing to soil loss tolerance with the sediment production data, it was shown that 11% of the basin area would have more sediment production than the tolerated value
Free degrees of homeomorphisms and periodic maps on closed surfaces
No full textAbstractFor each closed hyperbolic (orientable or nonorientable) surface F, we provide a positive integer h(F) with properties that for any homeomorphism ƒ on F, at least one of the iterates ƒ,ƒ2,…,ƒh(F) has a fixed point and there is a periodic (orientation reversing) homeomorphism s on F such that s1, s2,…,sh(F)−1 are all fixed point free. Those integers h(F) are: h(F2) = 4, h(Fg) = 2g − 2, g>2, h(N3)= 2, h(Nq)= q − 2, q>3. There is an interesting difference between our result and the Nielsen's result in the orientable category
SC author and illustrator Kate Salley Palmer signing book
No full textPhotograph of SC author and illustrator Kate Salley Palmer signing boo
Book signing by SC author and illustrator Kate Salley Palmer
No full textPhotograph of Book signing by SC author and illustrator Kate Salley Palme
The comparison of ROC curves for original new DIP PPI network and Wang-BP (the Wang method under the BP subontology) PPI network under (left) EC method, (middle) SC method and (right) aveNC method.
No full textThe comparison of ROC curves for original new DIP PPI network and Wang-BP (the Wang method under the BP subontology) PPI network under (left) EC method, (middle) SC method and (right) aveNC method.</p
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