Multiple Contribution Travel-time Equation In The Mcg Domain

Multiple attenuation is a crucial phase in the processing of marine seismic data. In specific, free surface multiples (waterair interface) that reflect from near water bottom layers are so strong that they mask reflections from lower geological layers. Surface Related Multiple Elimination (SRME) process is composed of two steps: prediction and adaptive subtraction. This paper deals with the prediction step. We analyze the signals that are registered on the Multiple Contribution Gather (MCG) domain and how they can be processed in order to obtain better prediction results. The better the prediction, the better the adaptation and subtraction. We suggest an approximation to the Multiple Contribution Traveltime (MCT) equation in the MCG domain. We use this equation to correct and filter the signals on the MCG domain.136140Dedem, E.J.V., Verschuur, D.J., 3D surface-related multiple prediction: A sparse inversion approach (2005) Geophysics, 70 (3), pp. V31. , ISSN 00168033 doi:10. 1190/1. 1925752Donno, D., Chauris, H., 2D multiple prediction in the curvelet domain (2010) EAGE-European Association of Geoscientists & Engineers, , JuneVerschuur, D.J., Seismic multiple removal techniques: Past, present and future (2006) Book, (8). , ISSN 1537-6613Yilmaz, O., Seismic data analysis: Processing, inversion and interpretation of seismic data, invest (2001) Society of Exploration Geophysicists, , ISBN 978156080098

Qsar Study Of Inibition By Coumarins Of Iq Induced Mutation In S. Typhimurium Ta98

Coumarin and its analogs inhibit the mutagenicity of 2-amino-3- methylimidazo[4,5-f] quinoline (IQ) in Salmonella typhimurium TA98. A quantitative structure-activity relationship (QSAR) study revealed that the antimutagenic activity of coumarins is related to the energy gap between levels one and two bellow the highest occupied molecular orbital (HOMO), εHOMO-1-εHOMO-2. The QSAR model suggests that the inhibition involves a direct interaction between the coumarins and the cytochromes CYP that activate IQ to a mutagen. © 2005 Elsevier B.V. All rights reserved.7251-3231238Skoog, K., Cooking procedures and food mutagens: A literature review (1993) Food Chemistry and Toxicology, 31, pp. 655-675Debnath, A.K., Debnath, G., Shusterman, A.J., Hansch, C., A QSAR investigation of the role of hydrophobicity in regulating mutagenicity in the ames test 1. Mutagenicity of aromatic and heteroaromatic amines in Salmonella typhimurium TA98 and TA100 (1992) Environmental and Molecular Mutagenesis, 19 (1), pp. 37-52Yamazoe, Y., Shimada, M., Kamataki, T., Kato, R., Microsomal activation of 2-amino-3-methylimidazo[4,5-f]quinoline a pyrolysate of sardine and beef extracts, to a mutagenic intermediate (1983) Cancer Research, 43 (12), pp. 5768-5774Beland, F.A., Kadlubar, F.F., Formation and persistence of arylamine DNA aducts in vivo (1985) Environmental Health Perspectives, 62, pp. 19-30Beland, F.A., Kadlubar, F.F., Metabolic activation and DNA aducts of aromatic amines and nitroaromatic hydrocarbons (1990) Chemical Carcinogenesis and Mutagenesis I, pp. 267-325. , C.S. Cooper P.L. Glover Springer BerlinDirr, A., Wild, D., Synthesis and mutagenic activity of nitro-imidazoarenes. A study on the mechanism of the genotoxicity of heterocyclic arylamines and nitroarenes (1988) Mutagenesis, 3 (2), pp. 147-152Snyderwine, E.G., Roller, P.P., Wirth, P.J., Adamson, R.H., Sato, S., Thorgeirsson, S.S., Synthesis purification and mutagenicity of 2-hydroxyamino-3- methylimidazolo[4,5-f] quinoline (1987) Carcinogenesis, 8 (7), pp. 1017-1020De Compadre, R.L.L., Debnath, A.K., Shusterman, A.J., Hansch, C., LUMO energies and hydrophobicity as determinants of mutagenicity by nitroaromatic compounds in Salmonella typhimurium (1990) Environmental and Molecular Mutagenesis, 15 (1), pp. 44-55Chen, S.-C., Wong, T.Y., Chung, K.-T., Base-pair mutation caused by four nitro-group containing aromatic amines in Salmonella typhimurium TA100, TA104, TA4001, TA4006 (1997) Mutation Research, 395 (2-3), pp. 223-227Chung, K.-T., Cerniglia, C.E., Mutagenicity of azo dyes: Structure-activity relationships (1992) Mutation Research, 277 (3), pp. 201-220Chung, K.-T., Chen, S.-C., Wong, T.Y., Wei, C.-I., Effects of benzidine and benzidine analogues on growth of bacteria including Azobacter vinelandii (1998) Environmental Toxicology and Chemistry, 17 (2), pp. 271-275Chung, K.-T., Kirkovsky, L., Kirkovsky, A., Purcell, W.P., Review of mutagenicity of monocyclic aromatic amines: Quantitative structure-activity relationships (1997) Mutation Research, 387 (1), pp. 1-16Colvin, M.E., Hatch, F.T., Felton, J.S., Chemical and biological factors affecting mutagen potency (1998) Mutation Research, 400 (1-2), pp. 479-492Felton, J.S., Knize, M.G., Hatch, F.T., Tanga, M.J., Colvin, M.E., Heterocyclic amine formation and the impact of structure on their mutagenicity (1999) Cancer Letters, 143, pp. 127-134Hatch, F.T., Colvin, M.E., Quantitative structure-activity (QSAR) relationships of mutagenic aromatic and heterocyclic amines (1997) Mutation Research, 376 (1-2), pp. 87-96Hatch, F.T., Colvin, M.E., Seidl, E.T., Structural and quantum chemical factors affecting mutagenic potency of aminoimidazo-azaarenes (1996) Environmental and Molecular Mutagenesis, 27 (4), pp. 314-330Maran, U., Karelson, M., Katritzky, A.R., A comprehensive QSAR treatment of the genotoxicity of heteroaromatic and aromatic amines (1999) Quantitative Structure-activity Relationships, 18 (1), pp. 3-10Poso, A., Von Wright, A., Gynther, J., An empirical and theoretical study on mechanisms of mutagenic activity of hydrazine compounds (1995) Mutation Research, 332 (1-2), pp. 63-71Shusterman, A.J., Debnath, A.K., Hansch, C., Horn, G.W., Fronczek, F.R., Greene, A.C., Watkins, S.F., Mutagenicity of dimethyl heteroaromatic triazenes in the ames test: The role of hydrophobic and electronic effects (1989) Molecular Pharmacology, 36 (6), pp. 939-944Tuppurainen, K., A plausible mechanism for the mutagenic activity (Salmonella typhimurium TA100) of MX compounds: A formation of CG-CG+-CG radical cation by one-electron reduction (1997) SAR and QSAR in Environmental Research, 7, pp. 281-286Tuppurainen, K., Frontier orbital energies hydrophobicity and steric factors as physical QSAR descriptors of molecular mutagenicity. A review with a case study: MX compounds (1999) Chemosphere, 38 (13), pp. 3015-3030You, Z., Brezzell, M.D., Das, S.K., Espadas-Torre, M.C., Hooberman, B.H., Sinsheimer, J.E., Ortho-substituent effects on the in vitro and in vivo genotoxicity of benzidine derivatives (1993) Mutation Research, 319 (1), pp. 19-30You, Z., Brezzell, M.D., Das, S.K., Hooberman, B.H., Sinsheimer, J.E., Substituent effects on the in vitro and in vivo genotoxicity of 4-aminobiphenyl and 4-aminostilbene derivatives (1994) Mutation Research, 320 (1-2), pp. 45-58Gnerre, C., Catto, M., Leonetti, F., Weber, P., Carrupt, P.A., Altomare, C., Carotti, A., Testa, B., Inhibition of monoamine oxidases by functionalized coumarin derivatives: Biological activities, QSARs, and 3D-QSARs (2000) Journal of Medicinal Chemistry, 43 (25), pp. 4747-4758Lewis, D.F.V., Lake, B.G., Ioannides, C., Parke, D.V., Inhibition of rat hepatic aryl-hydrocarbon hydroxylase-activity by a series of 7-hydroxy coumarins-QSAR studies (1994) Xenobiotica, 24 (9), pp. 829-838Poso, A., Gynther, J., Juvonen, R., A comparative molecular field analysis of cytochrome CYP 2A5 and 2A6 inhibitors (2001) Journal of Computer-Aided Molecular Design, 15 (3), pp. 195-202Huang, L., Kashiwada, Y., Cosentino, L.M., Fan, S., Chen, C.H., McPhail, A.T., Fujioka, T., Lee, K.H., Anti-aids agents.15. Synthesis and Anti-HIV activity of dihydroseselins and related analogs (1994) Journal of Medicinal Chemistry, 37 (23), pp. 3947-3955Ishikawa, T., Chemistry of Anti HIV-1 active calophyllum coumarins (1998) Journal of Synthetic Organic Chemistry Japan, 56 (2), pp. 116-124Lunney, E.A., Hagen, S.E., Domagala, J.M., Humblet, C., Kosinski, J., Tait, B.D., Warmus, J.S., Hupe, D., A novel nonpeptide HIV-1 protease inhibitor: Elucidation of the binding mode and its application in the design of related analogs (1994) Journal of Medicinal Chemistry, 37 (17), pp. 2664-2677Martyanov, I.V., Zakharova, O.D., Sottofattori, E., Pyshnyi, D.V., Yurchenko, E.Y., Babbi, P., Mazzei, M., Litvak, S., Interaction of oligonucleotides conjugated to substituted chromones and coumarins with HIV-1 reverse transcriptase (1999) Antisense and Nucleic Acid Drug Development, 9 (5), pp. 473-480Edenharder, R., Speth, C., Decker, M., Kolodziej, H., Kayser, O., Platt, K.L., Inhibition of mutagenesis of 2-amino-3-methylimidazo[4,5-f]quinoline (IQ) by coumarins and furanocoumarins, chomanones and furanochromanones (1995) Mutation Research, 345 (1-2), pp. 57-71Maenpaa, J., Sigusch, H., Raunio, H., Syngelma, T., Vuorela, P., Vuorela, H., Pelkonen, O., Differential inhibition of coumarin 7-hydroxylase activity in mouse and human liver microsomes (1993) Biochemical Pharmacology, 45 (5), pp. 1035-1042Hirano, Y., Uehara, M., Saeki, K., Kato, T., Takahashi, K., Mizutani, T., The influence of quinolines on coumarin 7-hydroxylation in bovine liver microsomes and human CYP2A6 (2002) Journal of Health Science, 48 (2), pp. 118-125Wald, R.W., Feuer, G., Molecular orbital calculations on coumarins and induction of drug-metabolizing enzymes (1971) Journal of Medicinal Chemistry, 14 (11), pp. 1081-1084Hao, N.J., Huang, M.P., Lee, H., Structure-activity relationships of anthraquinones as inhibitors of 7-ethoxycoumarin O-deethylase and mutagenicity of 2-amino-3-methylimidazo[4,5-f] quinoline (1995) Mutation Research-Fundamental and Molecular Mechanisms of Mutagenesis, 328 (2), pp. 183-191Yun, C.H., Jeong, H.G., Jhoun, J.W., Guengerich, F.P., Nonspecific inhibition of cytochrome-CYP activities by chlorophyllin in human and rat-liver microsomes (1995) Carcinogenesis, 16 (6), pp. 1437-1440Mohamadi, F., Richards, N.G.J., Guida, W.C., Liskamp, R., Lipton, M., Caufield, C., Chang, G., Still, W.C., Macromodel - An integrated software system for modeling organic and bioorganic molecules using molecular mechanics (1990) Journal of Computational Chemistry, 11 (4), pp. 440-467Schmidt, M.W., Baldridge, K.K., Boatz, J.A., Elbert, S.T., Gordon, M.S., Jensen, J.H., Koseki, S., Su, S., General atomic and molecular electronic structure system (1993) Journal of Computational Chemistry, 14 (11), pp. 1347-1363Wilderman, S.A., Crippen, G.M., Prediction of physico-chemical parameters by atomic contributions (1999) Journal of Chemical Information and Computer Sciences, 39, pp. 868-873Gaudio, A.C., Takahata, Y., Calculation of molecular-surface area with numerical factors (1992) Computers and Chemistry, 16 (4), pp. 277-284Wang, R., Fu, Y., Lai, L., A new atom-additive method for calculating partition coefficients (1997) Journal of Chemical Information and Computer Sciences, 37 (3), pp. 615-621Cambridge Soft Corporation. 2004. CS ChemDraw Ultra 8.0.100 Cambridge Park Drive, Cambridge, MA 02140, USA, Serial number: 7016709De Oliveira, D.B., Gaudio, A.C., BuildQSAR: A new computer program for QSAR studies (2000) Quantitative Structure-Activity Relationships, 19 (6), pp. 599-601Braga, R.S., Barone, P.M.V.B., Galvão, D.S., Identifying carcinogenic activity of methylated and non-methylated polycyclic aromatic hydrocarbons (PAHs) Through electronic and topological indices (2000) Brazilian Journal of Physics, 30 (3), pp. 560-568Hansch, C., Leo, A., Exploring QSAR: Fundamentals and Applications in Chemistry and Biology (1995) HANSCH C, LEO A, Translator, , American Chemical Society Washington, DCBandiera, S., Sawyer, T.W., Campbell, M.A., Fujita, T., Safe, S., Competitive-binding to the cytosolic 2,3,7,8-tetrachlorodibenzo-para- dioxin receptor: Effects of structure on the affinities of substituted halogenated biphenyls - A qsar analysis (1983) Biochemical Pharmacology, 32 (24), pp. 3803-3813Denomme, M.A., Homonko, K., Fujita, T., Sawyer, T., Safe, S., Substituted polychlorinated dibenzofuran receptor-binding affinites and aryl-hydrocarbon hydroxylase induction potencies. 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Photochemistry and Photobiology B. Biology, 74, pp. 63-7

Unsupervised Processing Of Geophysical Signals: A Review Of Some Key Aspects Of Blind Deconvolution And Blind Source Separation

Unsupervised signal processing has been an exciting theme of research for at least three decades. It finds the potential application in practically all fields where well-established techniques of digital signal processing have been employed, including telecommunications; speech and audio processing; image, radar, and sonar; and biomedical signals. Among these classical problems, geophysical signal processing has played a prominent role in the development of unsupervised methods. In fact, the field of unsupervised processing can be said to have started with the early application of Wiener's theories to seismology. © 2012 IEEE.2942735Kaplan, S.T., Ulrych, T.J., Blind deconvolution and ICA with a banded mixing matrix (2003) Proc. 4th Int. Symp. Independent Component Analysis and Blind Signal Separation, pp. 591-596. , Nara, JapanRomano, J.M.T., Attux, R., Cavalcante, C.C., Suyama, R., (2010) Unsupervised Signal Processing, , Boca Raton FL: CRC PressYilmaz, Ö., (2001) Seismic Data Analysis, , Tulsa OK: Society of Exploration GeophysicistsEdgar, J.A., Bann Der M.Van, How reliable is statistical wavelet estimation? (2011) Geophysics, 76 (4), pp. V59-V68. , July-AugNeelamani, R., Deconvolution and optimal filtering in seismology (2009) Handbook of Signal Processing in Acoustics, 2, pp. 1571-1583. , D. Havelock, S. Kuwano, and M. Vorländer, Eds. New York: Springer-Verlag ch. 87Robinson, E.A., (1954) Predictive Decomposition of Time Series with Applications to Seismic Exploration, , Ph.D. dissertation Dept. Geol. Geophys., MIT, CambridgeWiener, N., (1949) Extrapolation Interpolation and Smoothing of Stationary Time Series, , New York: WileyRobinson, E.A., Treitel, S., (1980) Geophysical Signal Analysis, , Englewood Cliffs NJ: Prentice-HallBenveniste Albert, Goursat Maurice, Ruget Gabriel, Robust identification of a nonminimum phase system: Blind adjustment of a linear equalizer in data communications (1980) IEEE Transactions on Automatic Control, AC-25 (3), pp. 385-399Shalvi Ofir, Weinstein Ehud, New criteria for blind deconvolution of nonminimum phase systems (channels) (1990) IEEE Transactions on Information Theory, 36 (2), pp. 312-321. , DOI 10.1109/18.52478Misra, S., Sacchi, M.D., Non-minimum phase wavelet estimation by non-linear optimization of all-pass operators (2007) Geophysical Prospecting, 55 (2), pp. 223-234. , DOI 10.1111/j.1365-2478.2007.00597.xComon, P., Jutten, C., (2010) Handbook of Blind Source Separation: Independent Component Analysis and Applications, , Burlington MA: Academic PressHérault, J., Jutten, C., Ans, B., Détection de grandeurs primitives dans un message composite par une architecture de calcul neuromimétique en apprentissage non supervisé (1985) Proc. GRETSI, Nice, France, pp. 1017-1022Comon, P., Independent Component Analysis, a new concept? (1994) Signal Process., 36 (3), pp. 287-314Weglein, A.B., Multiple attenuation: An overview of recent advances and the road ahead (1999) The Leading Edge, 18 (1), pp. 40-44Berkhout, A.J., Verschuur, D.J., Estimation of multiple scattering by iterative inversion-Part I: Theoretical considerations (1997) Geophysics, 62 (5), pp. 1586-1595Weglein, A.B., Araújo, F.V., Carvalho, P.M., Stolt, R.H., Matson, K.H., Coates, R.T., Corrigan, D., Zhang, H., Inverse scattering series and seismic exploration (2003) Inverse Problems: Inst. Phys. Publishing, 19 (6), pp. R27-R83Guitton, A., Verschuur, D.J., Adaptive subtraction of multiples using the L 1-norm (2004) Geophysical Prospecting, 52 (1), pp. 27-38. , DOI 10.1046/j.1365-2478.2004.00401.xLu, W., Adaptive multiple subtraction using independent component analysis (2006) Geophysics, 71 (5), pp. 179-184Lu, W., Liu, L., Adaptive multiple subtraction based on constrained independent component analysis (2009) Geophysics, 74 (1), pp. V1-V7Kaplan, S.T., Innanen, K.A., Adaptive separation of free-surface multiples through independent component analysis (2008) Geophysics, 73 (3), pp. V29-V36. , DOI 10.1190/1.2890407Dragoset, B., Verschuur, E., Moore, I., Bisley, R., A perspective on 3D surfacerelated multiple elimination (2010) Geophysics, 75 (5), pp. 75A245-75A261Mari, J.L., Seismic wave separation by SVD and (F-K) combined filters (2006) Proc. Extended Abstracts 2006 2nd Int. Symp. Communications, Control and Signal Processing, , Marrakech, MoroccoVrabie, V.D., Mars, J.I., Lacoume, J.-L., Modified singular value decomposition by means of independent component analysis (2004) Signal Process., 84 (3), pp. 645-652Freire, S.L.M., Ulrych, T.J., Application of singular value decomposition to vertical seismic profiling (1988) Geophysics, 53 (6), pp. 778-785Porsani, M.J., Silva, M.G., Melo, P.E.M., Ursin, B., SVD filtering applied to ground-roll attenuation (2010) J. Geophys. Eng., 7 (3), pp. 284-289Bekara, M., Van Der Baan, M., Local singular value decomposition for signal enhancement of seismic data (2007) Geophysics, 72 (2), pp. V59-V65. , DOI 10.1190/1.2435967Al-Qaisi, A., Woo, W.L., Dlay, S.S., Sparsity exploitation of mixing matrix and reflectivity sequence for ICA-blind seismic deconvolution (2008) Proc. 3rd Int. Conf. Information and Communication Technologies: From Theory to Applications, pp. 1-6. , Damascus, SyriaWei, G., Huaishan, L., Frequency domain seismic blind deconvolution based on ICA (2010) Proc. 2010 Int. Forum Information Technology and Applications, pp. 440-443. , Kunming, Chin

Asian water buffalo: domestication, history and genetics

The domestic Asian water buffalo (Bubalus bubalis) is found on all five continents, with a global population of some 202 million. The livelihoods of more people depend on this species than on any other domestic animal. The two distinct types (river and swamp) descended from different wild Asian water buffalo (Bubalus arnee) populations that diverged some 900 kyr BP and then evolved in separate geographical regions. After domestication in the western region of the Indian subcontinent (ca. 6300 years BP), the river buffalo spread west as far as Egypt, the Balkans and Italy. Conversely, after domestication in the China/ Indochina border region ca. 3000–7000 years BP, swamp buffaloes dispersed through south-east Asia and China as far as the Yangtze River valley. Molecular and morphological evidence indicates that swamp buffalo populations have strong geographic genetic differentiation and a lack of gene flow, but strong phenotypic uniformity. In contrast, river buffalo populations show a weaker phylogeographic structure, but higher phenotypic diversity (i.e. many breeds). The recent availability of a high-quality reference genome and of a medium-density marker panel for genotyping has triggered a number of genome-wide investigations on diversity, evolutionary history, production traits and functional elements. The growing molecular knowledge combined with breeding programmes should pave the way to improvements in production, environmental adaptation and disease resistance in water buffalo populations worldwide

Size characterization of airborne SiO2 nanoparticles with on-line and off-line measurement techniques: Results of an interlaboratory comparison

Day after day, new applications using manufactured nanoparticles appear in industry. To evaluate the occupational risk associated with airborne nanoparticles, it is important to have reliable, accurate, and standardized measurement methods. It is therefore necessary to work on pre- standardization projects to develop reference methods to characterize different parameters such as the number and the size distribution of airborne nanoparticles