Search Results - "Helas, G."

Rainforest Aerosols as Biogenic Nuclei of Clouds and Precipitation in the Amazon by Pöschl, U, Martin, S.T, Sinha, B, Chen, Q, Gunthe, S.S, Huffman, J.A, Borrmann, S, Farmer, D.K, Garland, R.M, Helas, G, Jimenez, J.L, King, S.M, Manzi, A, Mikhailov, E, Pauliquevis, T, Petters, M.D, Prenni, A.J, Roldin, P, Rose, D, Schneider, J, Su, H, Zorn, S.R, Artaxo, P, Andreae, M.O

“…The Amazon is one of the few continental regions where atmospheric aerosol particles and their effects on climate are not dominated by anthropogenic sources…”
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Source characterization of biomass burning particles: The combustion of selected European conifers, African hardwood, savanna grass, and German and Indonesian peat by Iinuma, Y., Brüggemann, E., Gnauk, T., Müller, K., Andreae, M. O., Helas, G., Parmar, R., Herrmann, H.

“…We carried out a detailed size‐resolved chemical characterization of particle emissions from the combustion of European conifer species, savanna grass, African…”
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The feasibility of fertility preservation in adolescents with Klinefelter syndrome by Rives, N., Milazzo, J. P., Perdrix, A., Castanet, M., Joly-Hélas, G., Sibert, L., Bironneau, A., Way, A., Macé, B.

“…STUDY QUESTION Is fertility preservation feasible after the onset of puberty in adolescents with Klinefelter syndrome (KS)? SUMMARY ANSWER Fertility…”
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Mass spectrometric analysis and aerodynamic properties of various types of combustion-related aerosol particles by Schneider, J., Weimer, S., Drewnick, F., Borrmann, S., Helas, G., Gwaze, P., Schmid, O., Andreae, M.O., Kirchner, U.

“…Various types of combustion-related particles in the size range between 100 and 850 nm were analyzed with an aerosol mass spectrometer and a differential…”
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Water uptake by biomass burning aerosol at sub- and supersaturated conditions: closure studies and implications for the role of organics by Dusek, U., Frank, G. P., Massling, A., Zeromskiene, K., Iinuma, Y., Schmid, O., Helas, G., Hennig, T., Wiedensohler, A., Andreae, M. O.

“…We investigate the CCN activity of freshly emitted biomass burning particles and their hygroscopic growth at a relative humidity (RH) of 85%. The particles…”
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A global database of sea surface dimethylsulfide (DMS) measurements and a procedure to predict sea surface DMS as a function of latitude, longitude, and month by Kettle, A. J., Andreae, M. O., Amouroux, D., Andreae, T. W., Bates, T. S., Berresheim, H., Bingemer, H., Boniforti, R., Curran, M. A. J., DiTullio, G. R., Helas, G., Jones, G. B., Keller, M. D., Kiene, R. P., Leck, C., Levasseur, M., Malin, G., Maspero, M., Matrai, P., McTaggart, A. R., Mihalopoulos, N., Nguyen, B. C., Novo, A., Putaud, J. P., Rapsomanikis, S., Roberts, G., Schebeske, G., Sharma, S., Simó, R., Staubes, R., Turner, S., Uher, G.

“…A database of 15,617 point measurements of dimethylsulfide (DMS) in surface waters along with lesser amounts of data for aqueous and particulate…”
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Modelling the optical properties of fresh biomass burning aerosol produced in a smoke chamber: results from the EFEU campaign by Hungershoefer, K., Zeromskiene, K., Iinuma, Y., Helas, G., Trentmann, J., Trautmann, T., Parmar, R. S., Wiedensohler, A., Andreae, M. O., Schmid, O.

“…A better characterisation of the optical properties of biomass burning aerosol as a function of the burning conditions is required in order to quantify their…”
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Complex refractive index of aerosols during LACE 98 as derived from the analysis of individual particles by Ebert, M, Weinbruch, S, Rausch, A, Gorzawski, G, Hoffmann, P, Wex, H, Helas, G

“…During the Lindenberger Aerosol Characterization Experiment (LACE 98), impactor sampling of aerosol particles in the size range of 0.1 to 25 mu m was…”
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Molecular characterization of 39 de novo sSMC: contribution to prognosis and genetic counselling, a prospective study by Marle, N., Martinet, D., Aboura, A., Joly-Helas, G., Andrieux, J., Flori, E., Puechberty, J., Vialard, F., Sanlaville, D., Fert Ferrer, S., Bourrouillou, G., Tabet, A.C., Quilichini, B., Simon-Bouy, B., Bazin, A., Becker, M., Stora, H., Amblard, S., Doco-Fenzy, M., Molina Gomes, D., Girard-Lemaire, F., Cordier, M.P., Satre, V., Schneider, A., Lemeur, N., Chambon, P., Jacquemont, S., Fellmann, F., Vigouroux-Castera, A., Molignier, R., Delaye, A., Pipiras, E., Liquier, A., Rousseau, T., Mosca, A.L., Kremer, V., Payet, M., Rangon, C., Mugneret, F., Aho, S., Faivre, L., Callier, P.

“…Small supernumerary marker chromosomes (sSMCs) are structurally abnormal chromosomes that cannot be characterized by karyotype. In many prenatal cases of de…”
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Measurement of Wavelength-Resolved Light Absorption by Aerosols Utilizing a UV-VIS Extinction Cell by Schnaiter, M., Schmid, O., Petzold, A., Fritzsche, L., Klein, K. F., Andreae, M. O., Helas, G., Thielmann, A., Gimmler, M., Möhler, O., Linke, C., Schurath, U.

“…The principle, technical details, and performance of the long path extinction spectrometer (LOPES), a new folded-path extinction cell with a spectral range…”
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Water vapor release from biomass combustion by Parmar, R. S., Welling, M., Andreae, M. O., Helas, G.

“…We report on the emission of water vapor from biomass combustion. Concurrent measurements of carbon monoxide and carbon dioxide are used to scale the…”
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Surface features on Sahara soil dust particles made visible by atomic force microscope (AFM) phase images by Helas, G., Andreae, M. O.

“…We show that atomic force microscopy (AFM) phase images can reveal surface features of soil dust particles, which are not evident using other microscopic…”
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Laboratory measurements of smoke optical properties from the burning of Indonesian peat and other types of biomass by Chand, D., Schmid, O., Gwaze, P., Parmar, R. S., Helas, G., Zeromskiene, K., Wiedensohler, A., Massling, A., Andreae, M. O.

“…We present the first results on optical properties (λ ∼ 540 nm) of fresh aerosols from the combustion of Indonesian peat, German peat and other types of…”
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Evidence for large-scale transport of biomass burning aerosols from sunphotometry at a remote South African site by Winkler, H., Formenti, P., Esterhuyse, D.J., Swap, R.J., Helas, G., Annegarn, H.J., Andreae, M.O.

“…We present the results of sunphotometry measurements at De Aar, a remote site on the central South African plateau, during and after the intensive dry season…”
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“Missing” cloud condensation nuclei in peat smoke by Dusek, U., Frank, G. P., Helas, G., Iinuma, Y., Zeromskiene, K., Gwaze, P., Hennig, T., Massling, A., Schmid, O., Herrmann, H., Wiedensohler, A., Andreae, M. O.

“…We characterized particulate emissions from vegetation fires by burning Indonesian and German peat and other biomass fuels in a controlled laboratory setting…”
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Complex chromosomal rearrangement and intracytoplasmic sperm injection: A Case Report by Joly-Helas, G., de La Rochebrochard, C., Mousset-Siméon, N., Moirot, H., Tiercin, C., Romana, S.P., Le Caignec, C., Clavier, B., Macé, B., Rives, N.

“…Complex chromosomal rearrangements (CCRs) are rare events in human pathology and are usually considered to induce severe reproductive impairment by disturbing…”
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Photochemistry of the African troposphere: Influence of biomass-burning emissions by Marufu, L., Dentener, F., Lelieveld, J., Andreae, M. O., Helas, G.

“…The relative importance of biomass‐burning (pyrogenic) emissions from savannas, deforestation, agricultural waste burning, and biofuel consumption to…”
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Domestic combustion of biomass fuels in developing countries: A major source of atmospheric pollutants by LUDWIG, J, MARUFU, L. T, HUBER, B, ANDREAE, M. O, HELAS, G

“…Biomass burning has important impacts on atmospheric chemistry and climate. Fires in tropical forests and savannas release large quantities of trace gases and…”
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Pregnancy outcomes of prenatally diagnosed Turner syndrome: a French multicenter retrospective study including a series of 975 cases by Gruchy, N., Vialard, F., Blondeel, E., Le Meur, N., Joly-Hélas, G., Chambon, P., Till, M., Herbaut-Graux, M., Vigouroux-Castera, A., Coussement, A., Lespinasse, J., Amblard, F., Jimenez, M., Lebel Roy Camille, L., Carré-Pigeon, F., Flori, E., Mugneret, F., Jaillard, S., Yardin, C., Harbuz, R., Collonge Rame, M., Vago, P., Valduga, M., Leporrier, N.

“…ABSTRACT Objectives The objectives of this study were to report pregnancy outcomes after prenatal diagnosis of Turner syndrome (TS) and to compare and assess…”
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Carbon monoxide and nitric oxide from biofuel fires in Kenya by Kituyi, E, Marufu, L, Wandiga, S.O, Jumba, I.O, Andreae, M.O, Helas, G

“…Emission ratios (ER) of CO and NO relative to CO 2 are reported from real time emission measurements on biofuel fires in Kenya. The experiments were based on…”
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