117 research outputs found

    Search for jet extinction in the inclusive jet-pT spectrum from proton-proton collisions at s=8 TeV

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    Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published articles title, journal citation, and DOI.The first search at the LHC for the extinction of QCD jet production is presented, using data collected with the CMS detector corresponding to an integrated luminosity of 10.7  fb−1 of proton-proton collisions at a center-of-mass energy of 8 TeV. The extinction model studied in this analysis is motivated by the search for signatures of strong gravity at the TeV scale (terascale gravity) and assumes the existence of string couplings in the strong-coupling limit. In this limit, the string model predicts the suppression of all high-transverse-momentum standard model processes, including jet production, beyond a certain energy scale. To test this prediction, the measured transverse-momentum spectrum is compared to the theoretical prediction of the standard model. No significant deficit of events is found at high transverse momentum. A 95% confidence level lower limit of 3.3 TeV is set on the extinction mass scale

    An Evaluation of the COVID-19 Pandemic and Perceived Social Distancing Policies in Relation to Planning, Selecting, and Preparing Healthy Meals: An Observational Study in 38 Countries Worldwide

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    Objectives: To examine changes in planning, selecting, and preparing healthy foods in relation to personal factors (time, money, stress) and social distancing policies during the COVID-19 crisis. Methods: Using cross-sectional online surveys collected in 38 countries worldwide in April-June 2020 (N = 37,207, Mage 36.7 SD 14.8, 77% women), we compared changes in food literacy behaviors to changes in personal factors and social distancing policies, using hierarchical multiple regression analyses controlling for sociodemographic variables. Results: Increases in planning (4.7 SD 1.3, 4.9 SD 1.3), selecting (3.6 SD 1.7, 3.7 SD 1.7), and preparing (4.6 SD 1.2, 4.7 SD 1.3) healthy foods were found for women and men, and positively related to perceived time availability and stay-at-home policies. Psychological distress was a barrier for women, and an enabler for men. Financial stress was a barrier and enabler depending on various sociodemographic variables (all p < 0.01). Conclusion: Stay-at-home policies and feelings of having more time during COVID-19 seem to have improved food literacy. Stress and other social distancing policies relate to food literacy in more complex ways, highlighting the necessity of a health equity lens. Copyright 2021 De Backer, Teunissen, Cuykx, Decorte, Pabian, Gerritsen, Matthys, Al Sabbah, Van Royen and the Corona Cooking Survey Study Group.This research was funded by the Research Foundation Flanders (G047518N) and Flanders Innovation and Entrepreneurship (HBC.2018.0397). These funding sources had no role in the design of the study, the analysis and interpretation of the data or the writing of, nor the decision to publish the manuscript.Scopu

    Searches for electroweak neutralino and chargino production in channels with Higgs, Z, and W bosons in pp collisions at 8 TeV

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    Searches for supersymmetry (SUSY) are presented based on the electroweak pair production of neutralinos and charginos, leading to decay channels with Higgs, Z, and W bosons and undetected lightest SUSY particles (LSPs). The data sample corresponds to an integrated luminosity of about 19.5 fb(-1) of proton-proton collisions at a center-of-mass energy of 8 TeV collected in 2012 with the CMS detector at the LHC. The main emphasis is neutralino pair production in which each neutralino decays either to a Higgs boson (h) and an LSP or to a Z boson and an LSP, leading to hh, hZ, and ZZ states with missing transverse energy (E-T(miss)). A second aspect is chargino-neutralino pair production, leading to hW states with E-T(miss). The decays of a Higgs boson to a bottom-quark pair, to a photon pair, and to final states with leptons are considered in conjunction with hadronic and leptonic decay modes of the Z and W bosons. No evidence is found for supersymmetric particles, and 95% confidence level upper limits are evaluated for the respective pair production cross sections and for neutralino and chargino mass values

    Optimization Of The Carbon Paste Electrode Preparation Containing Riboflavin Immobilized On An Inorganic Support [otimização Da Preparação De Eletrodo De Pasta De Carbono Contendo Riboflavina Imobilizada Em Suporte Inorgânico]

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    The aim of this work was to optimize the preparation of electrodes with riboflavin (RF) immobilized on a silica surface modified with niobium oxide and carbon paste. Electrode preparation was optimized employing a factorial design consisting of two levels and three factors. The electrochemical properties of immobilized RF were investigated by cyclic voltammetry. The factorial analysis was carried out analysing the current intensity (Ipa). It was possible to optimize the electrode to get the best reversibility in the redox process, i. e. the lowest separation between anodic and cathodic peak potentials and a current ratio close to unity. The concentration of supporting electrolyte has a small effect. The proportion has the highest effect and the interaction factor between proportion and mixture has also a significant effect on the current intensity.275725729Katz, E., Lotzbeyer, T., Schlereth, D.D., Schuhmann, W., Schmidt, H.-L., (1994) J. Electroanal. Chem., 373, p. 189Ni, F., Feng, H., Gorton, L., Cotton, T.M., (1990) Langmuir, 6, p. 66Nagy, G., Kapui, I., Gorton, L., (1995) Anal. Chim. Acta, 305, p. 65Domínguez, E., Lan, H.L., Okamoto, Y., Hale, P.D., Skotheim, T.A., Gorton, L., Hahnhagerdal, B., (1993) Biosens. Bioelectron., 8, p. 229Fernandes, J.C.B., Oliveira Neto, G., Rohwedder, J.J.R., Kubota, L.T., (2000) J. Braz. Chem. Soc., 11, p. 349Gorton, L., Domínguez, E., (2002) Electroanalysis, Rev. Mol. Biotechnol., 82, p. 371Sun, W.L., Kong, J.L., Deng, J.Q., (1996) Anal. Lett., 29, p. 2425De Lucca, A.R., Santos, A.S., Pereira, A.C., Kubota, L.T., (2002) J. Colloid Interface Sci., 254, p. 113Friedman, R.M., (1999) J. Electroanal. Chem., 472, p. 147Cosnier, S., Décout, J.-L., Fontecave, M., Frier, C., Innocent, C., (1998) Electroanalysis, 10, p. 521Ogino, Y., Takagi, K., Kano, K., Iketa, T., (1995) J. Electroanal. Chem., 396, p. 517Chi, Q.-J., Dong, S.-J., (1996) J. Mol. Catal. A: Chem., 105, p. 193Birss, V.I., Guha-Thakurta, S., McGarvey, C.E., Quach, S., Vanýsek, P., (1997) J. Electroanal. Chem., 423, p. 13Cosnier, S., Fontecave, M., Limosin, D., Nivière, V., (1997) Anal. Chem., 69, p. 3095Gergel, A., Comtat, M., (1991) J. Electroanal. Chem., 302, p. 219Gorton, L., (1995) Electroanalysis, 7, p. 23Santos, A.S., Gorton, L., Kubota, L.T., (2002) Electrochim. Acta, 47, p. 3351Yamashita, M., Rosatto, S.S., Kubota, L.T., (2002) J. Braz. Chem. Soc., 13, p. 635Coche-Guerente, L., Cosnier, S., Inocent, C., Mailley, P., (1995) Anal. Chim. Acta, 311, p. 23Coche-Guerente, L., Deronzier, A., Mailley, P., Moutet, J.C., (1994) Anal. Chim. Acta, 289, p. 143Pogorelova, S.P., Zayats, M., Kharitonov, A.B., Katz, E., Willner, I., (2003) Sens. Actuators, B, 89, p. 40Munteanu, F.D., Kubota, L.T., Gorton, L., (2001) J. Electroanal. Chem., 509, p. 2Gorton, L., Persson, B., Hale, P.D., Boguslavsky, L.I., Karan, H.I., Lee, H.S., Skotheim, T.A., Okamoto, Y., (1992) Em Biosensors and Chemical Sensors - Optimizing Performance Through Materials, 487, p. 56. , Edelman, P. G.Wang, J. O., eds.ACS Symposium Series, American Chemical Society: Washington, D. CKalcher, K., Kauffmann, J.M., Wang, J., Svancara, I., Vytras, K., Neuhold, C., Yang, Z., (1995) Electroanalysis, 7, p. 5Mullor, S.G., Sánchez-Cabezudo, M., Ordieres, A.J.M., Ruiz, B.L., (1996) Talanta, 43, p. 779Gorton, L., Karan, H.I., Hale, P.D., Inagaki, T., Okamoto, Y., Skotheim, T.A., (1990) Anal. Chim. Acta, 228, p. 23Palecek, E., (1996) Electroanalysis, 8, p. 7Kubota, L.T., Gushikem, Y., Perez, J., Tanaka, A.A., (1995) Langmuir, 11, p. 1009Rolison, D.R., (1990) Chem. Rev., 90, p. 867Gushikem, Y., Rosatto, S.S., (2001) J. Braz. Chem. Soc., 6, p. 695Alfaya, A.A.S., Kubota, L.T., (2002) Quim. Nova, 25, p. 835Durrani, A.A., Garret, A., Johnson, R.A., Sood, S.K., Tyman, J.H.P., (2002) J. Liq. Chromatogr. Relat. Technol., 25, p. 1543Mahmoud, M.E., Al Saadi, M.S.M., (2001) Anal. Chim. Acta, 450, p. 239Walcarius, A., (1998) Electroanalysis, 10, p. 18Katakis, I., Domínguez, E., (1997) Mikrochim. Acta, 126, p. 11Neto, B.B., Scarmínio, I.S., Bruns, R.E., (1996) Planejamento e Otimização de Experimentos, 2a Ed., , CampinasDenofre, S., Gushikem, Y., Davanzo, C.U., (1991) J. Solid State Inorg. Chem., 28, p. 1295Pereira, A.C., Santos, A.S., Kubota, L.T., (2003) J. Colloid Interface Sci., 265, p. 351Santos, A.S., Pereira, A.C., Kubota, L.T., (2002) J. Braz. Chem. Soc., 13, p. 49

    Enzymeless Biosensors: A Novel Area For The Development Of Amperometric Sensors [enzymeless Biosensors: Uma Nova área Para O Desenvolvimento De Sensores Amperométricos]

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    The aim of this work is to describe the recent area that it has been developed for the construction of amperometric sensors, with the purpose to make possible a more effective electron transfer between enzyme and electrode. The advances reported in the literature will be described, such as enzymatic configurations that can be mimic using the chemistry of the artificial enzymes.251123128Schmidt, H.-L., Gutberlet, F., Schuhmann, W., (1993) Sens. Actuators B, 13-14, p. 366Liu, H., Ying, T., Sun, K., Li, H., Qi, D., (1997) Anal. Chim. Acta, 344, p. 187Okawa, Y., Nagano, M., Hirota, S., Kobayashi, H., Ohno, T., Watanabe, M., (1999) Bios. Bioelect., 14, p. 229Gorton, L., Lindgren, A., Larsson, T., Munteanu, F.D., Ruzgas, T., Gazaryan, I., (1999) Anal. Chim. Acta, 400, p. 91Lötzbeyer, T., Schuhmann, W., Schmidt, H.-L., (1996) Sens. Actuators B, 33, p. 50Lötzbeyer, T., Schuhmann, W., Schmidt, H.-L., (1997) Bioelect. Bioenerg., 42, p. 1Breslow, R., Overman, L.E., (1970) J. Am. Chem. Soc., 92, p. 1075Breslow, R., (1980) Acc. Chem. Res., 13, p. 170Breslow, R., (1995) Acc. Chem. Res., 28, p. 146Cram, D.J., (1988) Angew. Chem., Int. Ed., 27, p. 1009Lehn, J.-M., (1988) Angew. Chem., Int. Ed., 27, p. 89Pendersen, C.J., (1988) Angew. Chem., Int. Ed., 27, p. 1021Murakami, Y., Kikuchi, J., Hisaeda, Y., Hayashida, O., (1996) Chem. Rev., 96, p. 721Hisaeda, Y., Kihara, E., Nishioka, T., (1997) J. Inorg. Biochem., 67, p. 235Murakami, Y., Aoyama, Y., Kikushi, J., (1981) J. Chem. Soc., Perkin Trans. I, 11, p. 2809Kajiki, T., Moriya, H., Hoshino, K., Kuroi, T., Kondo, S., Nabeshima, T., Yano, Y., (1999) J. Org. Chem., 64, p. 9679Walliman, P., Mattei, S., Seiler, P., Diederich, F., (1997) Helv. Chim. Acta, 80, p. 2368Bonchio, M., Carofiglio, T., Di Furia, R., Fornasier, R., (1995) J. Org. Chem., 60, p. 5986Ikeda, H., Horimoto, Y., Nakata, M., Ueno, A., (2000) Tetrahedron Lett., 41, p. 6483Breslow, R., Chmielewski, J., Foley, D., Johson, B., Kumabe, N., Varney, M., Mehra, R., (1988) Tetrahedron, 44, p. 5515Suh, J., Noh, Y.S., (1998) Bioorg. Med. Chem. Lett., 8, p. 1327Jairam, R., Potvin, P.G., Balsky, S., (1999) J. Chem. Soc., Perkin Trans. 2, 2, p. 363Kikushi, J., Zhang, Z., Murakami, Y., (1994) Chem. Lett., 8, p. 1559Schreyer, S.K., Mikkelsen, S.R., (1999) Bioconjugate Chem., 10, p. 464Wang, J., (1999) J. Pharm. Biomed. Anal., 19, p. 47Suzuki, I., Chen, Q., Kashiwagi, Y., Osa, T., Ueno, A., (1993) Chem. Lett., 10, p. 1719Ye, H., Tong, W., D'Souza, V.T., (1994) J. Chem. Soc., Perkin Trans. 2, 12, p. 2431Ye, H., Tong, W., D'Souza, V.T., (1992) J. Am. Chem. Soc., 114, p. 5470Tong, W., Ye, H., Rong, D., D'Souza, V.T., (1992) J. Comput. Chem., 13, p. 614Ansell, R.J., Small, D.A.P., Lowe, C.R., (1999) J. Mol. Catal. B: Enzym., 6, p. 111Engbersen, J.F., Koudijs, A., Van Der Plas, H.C., (1990) J. Org. Chem., 55, p. 3647Miller, S.F., Babcock, G.T., (1996) Chem. Rev., 96, p. 2889Klinman, J.P., (1996) Chem. Rev., 96, p. 2541Solomon, F.I., Sundaram, U.M., Machonkin, T.E., (1996) Chem. Rev., 96, p. 2563Hasebe, Y., Akiyama, T., Yagisawa, T., Uchiyama, S., (1998) Talanta, 47, p. 1139Fernandes, J.C.B., Kubota, L.T., Oliveira-Neto, G., (1999) Electroanalysis, 11, p. 475Rover L., Jr., Fernandes, J.C.B., Oliveira-Neto, G., Kubota, L.T., (2000) J. Electroanal. Chem., 481, p. 34Hille, R., (1996) Chem. Rev., 96, p. 2757Dismukes, G.C., (1996) Chem. Rev., 96, p. 2909Johnson, M.K., Rees, D.C., Adams, M.W.W., (1996) Chem. Rev., 96, p. 2817Que L., Jr., Ho, R.Y.N., (1996) Chem. Rev., 96, p. 2607Costas, M., Chen, K., Que L., Jr., (2000) Coord. Chem. Rev., 200-202, p. 517Angnes, L., Azevedo, C.M.B., Araki, K., Toma, H.E., (1996) Anal. Chim. Acta, 329, p. 91Araki, K., Angnes, L., Azevedo, C.M.B., Toma, H.E., (1995) J. Electroanal. Chem., 397, p. 205Zen, J.-M., Lai, Y.-Y., Ilangovan, G., Kumar, A.S., (2000) Electroanalysis, 12, p. 280Zen, J.-M., Kumar, A.S., Chang, M.-R., (2000) Electrochim. Acta, 45, p. 1691Berchmans, S., Gomathi, H., Rao, G.P., (1998) Sens. Actuators B, 50, p. 156Berchmans, S., Gomathi, H., Rao, G.P., (1995) J. Electroanal. Chem., 394, p. 267Casella, I.G., Desimoni, E., Salvi, A.M., (1991) Anal. Chim. Acta, 243, p. 61Casella, I.G., Cataldi, T.R.I., Salvi, A.M., Desimoni, E., (1993) Anal. Chem., 65, p. 3143Karyakin, A.A., Karyakina, E.E., (1999) Sens. Actuators B, 57, p. 268Itaya, K., Shoji, N., Uchida, I., (1984) J. Am. Chem. Soc., 106, p. 3423Karyakin, A.A., Karyakina, E.E., Gorton, L., (1996) Talanta, 43, p. 1597Cosnier, S., Innocent, C., Allien, L., Poitry, S., Tsacopoulos, M., (1997) Anal. Chem., 69, p. 968Belay, A., Ruzgas, T., Csösegi, E., Moges, G., Tessema, M., Solomon, T., Gorton, L., (1997) Anal. Chem., 69, p. 3471Villarta, R., Cunningham, D.D., Guilbault, G.G., (1991) Talanta, 38, p. 49Karyakin, A.A., Karyakina, E.E., Gorton, L., (1998) J. Electroanal. Chem., 456, p. 9

    Cyclic Voltammetry Studies Of Copper And Nickel Hexacyanoferrate Immobilized On A Silica Gel Surface Coated With Titanium(iv) Oxide

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    The cyclic voltammetric behavior of copper and nickel hexacyanoferrate complexes immobilized on a silica gel surface coated with Ti(IV) oxide indicated good chemical stability for the copper complex film and that the nickel film undergoes a structural change with time. The potential of the redox reaction Ti+{M[FeIII(CN)6]}- + C + e- → Ti+{CM[FeII(CN)6]}- (M = Cu2+, Ni2+; C = K+, NH4 +, Na+, Li+; Ti denotes Ti(IV) oxide substrate on a silica gel surface) is dependent on the degree of reticulation and the affinity of C to the transition metal hexacyanoferrate solid film. The cyclic voltammetry waves in Li+ and Na+ as the supporting electrolyte were broadened for Ti{Cu[FeII/III(CN)6]}, suggesting that the diffusion of these cations through the zeolitic cavity of the surface complex was hindered because of their larger hydrated ionic radii compared with those of K+ and NH4 +. The Ti{Ni[FeII/III(CN)6]} cyclic voltammetry waves depend on the capacity of the electroactive species on the Ti(IV) oxide surface to interact with the cationic species of the supporting electrolyte. © 1993.36201/02/15219225Siperko, Kuwana, Electrochemical and Spectroscopic Studies of Metal Hexacyanometalate Films (1983) Journal of The Electrochemical Society, 130, p. 396Engel, Grabner, (1985) Ber. Bunsenges. Phys. Chem., 89, p. 982Siperko, Kuwana, (1987) Electrochim. Acta, 32, p. 765Bocarsly, Sinha, Effects of surface structure on electrode charge transfer properties (1992) Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, 140, p. 167Siperko, Kuwana, (1986) J. Electrochem. Soc., 133, p. 2439Sinha, Humphrey, Bocarsly, (1984) Inorg. Chem., 23, p. 203Itaya, Uchida, Neff, (1986) Acc. Chem. Res., 19, p. 162Humphrey, Sinha, Bocarsly, Mechanisms of charge transfer at the chemically derivatized interface: the Ni/[NiII(CN)FeII/III(CN)5]2-/1- system as an electrocatalyst (1987) The Journal of Physical Chemistry, 91, p. 587Harrison, Turner, Baltes, (1988) Anal. Chem., 60, p. 2002Zagal, Bindra, Yeager, (1980) J. Electroanal. Chem., 127, p. 1506Dong, Jin, (1988) J. Electroanal. Chem., 256, p. 193Ellis, Eckhoff, Neff, (1981) J. Phys. Chem., 85, p. 1225Morrison, (1980) Electrochemistry at Semiconductor and Oxidized Metal Electrodes, , Plenum, New YorkGushikem, Andreotti, Kubota, Electron Mediator Property of [Fe(CN)6]3-/4-Immobilized on Zr(IV) Oxide Coated on a Silica Gel Surface (1992) Journal Of The Brazilian Chemical Society, 3, p. 21Kubota, Gushikem, (1992) Electrochim. Acta, 37 (13), p. 2477Zaldivar, Gushikem, Kubota, (1991) J. Electroanal. Chem., 318, p. 247Zaldivar, Gushikem, (1992) J. Electroanal. Chem., 337, p. 165Thomsen, Baldwin, Evaluation of electrodes coated with metal hexacyanoferrate as amperometric sensors for nonelectroactive cations in flow systems (1990) Electroanalysis, 2, p. 263Denofre, Gushikem, Davanzo, (1991) J. Solid State Inorg. Chem., 28, p. 1295Kubota, Gushikem, Castro, Moreira, (1991) Colloids Surf., 57, p. 11Moreira, Pavan, Gushikem, Adsorption of Cu(II), Zn(II), Cd(II), Hg(II) and Pb(II) from aqueous solutions on a 2-mercaptobenzimidazole-modified silica gel (1990) Mikrochimica Acta, 3, p. 107Benvenutti, Gushikem, Vasquez, Castro, Zaldivar, X-Ray photoelectron spectroscopy and m�ssbauer spectroscopy study of iron(III) and antimony(V) oxides grafted onto a silica gel surface (1991) Journal of the Chemical Society, Chemical Communications, p. 1325Kubota, Gushikem, Moreira, (1991) Analyst, 114, p. 281Gushikem, Peixoto, Kubota, (1991) New Developments in Ion Exchange, Fundamentals and Applications, p. 607. , M. Abe, T. Kataoka, T. Suzuki, Kodansha-Elsevier, TokyoBenvenutti, Gushikem, Davanzo, de Castro, Torriani, (1992) J. Chem. Soc. Faraday Trans., 88, p. 3193Nakamoto, (1970) Infrared Spectra of Inorganic and Coordination Compounds, , Interscience, New YorkGhosh, (1974) J. Inorg. Nucl. Chem., 36, p. 2465Ayres, Waggoner, Synthesis and properties of two series of heavy metal hexacyanoferrates (1971) Journal of Inorganic and Nuclear Chemistry, 33, p. 721Shriver, (1963) J. Am. Chem. Soc., 85, p. 1405Kuta, Yeager, The influence of cations on the electrode kinetics of ferricyanide-ferrocyanide system on the rotating gold electrode (1975) Journal of Electroanalytical Chemistry and Interfacial Electrochemistry, 59, p. 110Shigehara, Oyama, Anson, (1981) J. Am. Chem. Soc., 103, p. 2552Lin, Bocarsly, (1991) J. Electroanal. Chem., 300, p. 325Moelwyn-Hughes, (1961) Physical Chemistry, p. 587. , Pergamon, LondonSeifer, (1962) Russ. J. Inorg. Chem., 7, p. 621Feldman, Melroy, (1987) J. Electroanal. Chem., 234, p. 21

    Application Of Self-assembled Monolayer-based Electrode For Voltammetric Determination Of Copper

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    A gold electrode modified with a self-assembled monolayer (SAM) of 3-mercaptopropionic acid (MPA) was evaluated as a highly sensitive voltammetric sensor for copper ions. As demonstrated by cyclic voltammetric experiments, the SAM-based electrode showed an attractive ability to efficiently preconcentrate trace of copper(II) from solution, allowing a very simple and reproducible method for copper determination at levels down to ppq (parts per quadrillion). The influence of various experimental parameters on the sensor response was investigated (i.e. pH, supporting electrolyte, pre-concentration time). The MPA modified electrode presented a wide linear response range between 1.0×10-12 and 1.0×10-9moll-1 for copper(II), with a detection limit of 1.8×10-14moll -1 (1.1pgl-1) using 10min of pre-concentration. Moreover, this electrode also presented excellent repeatability, showing a relative standard deviation of 3.2% for a series of nine successive measurements of a 1.0×10-11moll-1 Cu2+ solution. This new sensor was successfully applied for the determination of copper in sugar cane spirits and mineral water samples. © 2004 Elsevier Ltd. All rights reserved.4922-23 SPEC. ISS.37953800Ulman, A., (1991) An Introduction to Ultrathin Organic Films, , Academic Press, BostonGao, Z.Q., Siow, K.S., (1996) J. Electroanal. Chem., 412, p. 179Aizenberg, J., Black, A.J., Whitesides, G.M., (1998) Nature, 394, p. 868Sato, Y., Fujita, M., Mizutani, F., Uosaki, K., (1996) J. Electroanal. Chem., 409, p. 145Steinberg, S., Rubinstein, I., (1992) Langmuir, 8, p. 1183Mandler, D., Turyan, I., (1996) Electroanalysis, 8, p. 207Flink, S., Boukamp, B.A., Van Den Berg, A., Van Veggel, F.C.J.M., Reinhoudt, D.N., (1998) J. Am. Chem. Soc., 120, p. 4652Everett, W.R., Fritsch-Faules, I., (1995) Anal. Chim. Acta, 307, p. 253Yang, W., Gooding, J.J., Hibbert, D.B., (2001) J. Electroanal. Chem., 516, p. 10Arrigan, D.W.M., Bihan, L.L., (1999) Analyst, 124, p. 1645Ulman, A., (1996) Chem. Rev., 96, p. 1533Creager, S.E., Olsen, K.G., (1995) Anal. Chim. Acta, 307, p. 277Bandyopadhyay, K., Vijayamohanan, K., (1998) Langmuir, 14, p. 625Sayre, C.N., Collard, D.M., (1997) Langmuir, 13, p. 714Turyan, I., Atiya, M., Mandler, D., (2001) Electroanalysis, 13, p. 653Turyan, I., Mandler, D., (1994) Anal. Chem., 66, p. 58Turyan, I., Mandler, D., (1997) Anal. Chem., 69, p. 894Rubinstein, I., Steinberg, S., Yitzhak, T., Shanzer, A., Sagiv, J., (1988) Nature, 332, p. 426Shen, H., Mark, J.E., Seliskar, C.L., Mark, H.B., Heineman, W.R., (1997) J. Solid State Electrochem., 1, p. 241Bontidean, I., Berggren, C., Johansson, G., Csoregi, E., Mattiasson, B., Llyod, J.R., Jakeman, K.J., Brown, N.L., (1998) Anal. Chem., 70, p. 4162Liu, A.C., Chen, D.C., Lin, C.C., Chou, H.H., Chen, C.H., (1999) Anal. Chem., 71, p. 1549Yang, W., Jaramillo, D., Gooding, J.J., Hibert, D.B., Zhang, R., Willet, G.D., Fisher, K.J., (2001) Chem. Commun., 19, p. 1982Zeng, B., Ding, X., Zhao, F., (2002) Electroanalysis, 14, p. 651Porter, M.D., Bright, T.B., Allara, D.L., Chidsey, C.E.D., (1980) J. Am. Chem. Soc., 102, p. 3559Bain, C.D., Whitesides, G.M., (1989) J. Am. Chem. Soc., 111, p. 7164Bain, C.D., Evall, J., Whitesides, G.M., (1989) J. Am. Chem. Soc., 111, p. 7155Zhao, J., Luo, L., Yang, X., Wang, E., Dong, S., (1999) Electroanalysis, 11, p. 1108Freire, R.S., Kubota, L.T., (2002) Analyst, 127, p. 1502Laviron, E., (1979) J. Electroanal. Chem., 101, p. 19Richter, E.M., Augelli, M.A., Magarotto, S., Angnes, L., (2001) Electroanalysis, 13, p. 760Barceloux, D.G., (1999) J. Toxicol. Clin. Toxic., 37, p. 217McGarvey, B.R., Schultz, M.S., Vasconcellos, L.C.G., Bezerra, C.W.B., Franco, D.W., (1999) Anal. Lett., 32, p. 761Barbeira, P.J.S., Stradiotto, N.R., (1999) Anal. Lett., 32, p. 2071Neto, B.S.L., Bezerra, C.W.B., Polastro, L.R., Campos, P., Nascimento, R.F., Furuya, S.M.B., Franco, D.W., (1994) Quim. Nova, 17, p. 220Labuda, J., Vanickova, M., Uhlemann, E., Mickler, W., (1994) Anal. Chim. Acta, 284, p. 51

    Biosensors As A Tool For The Antioxidant Status Evaluation

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    Antioxidants are one of the main ingredients that protect food attributes by preventing oxidation that occurs during processing, distribution and end preparation of food. Physiological antioxidant protection involves a variety of chemical system of endogenous and exogenous origin in a multiplicity of pathways. Associate to this, researches have been directed in the development of methods as biosensors that can characterize antioxidants capable of removing harmful radicals in living organisms in an adequate way. Biosensors have represented a broad area of technology useful for environmental, food monitoring, clinical applications and can represent a good alternative method to evaluate the antioxidant status. The demonstration of the highlighted current application of biosensor as a potential tool to evaluate the antioxidant status is the main aim of this review. © 2006 Elsevier B.V. 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    (bio)analytical Research In Latin America

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    [No abstract available]405247561756
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