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16 results

  1. CORESTA Meeting, Smoke Science/Product Technology, 2017, Kitzbühel, ST 53 (also presented at TSRC 2017)

    Fumex: light scattering sensor for the analysis of electronic cigarette aerosols

    WANG Q.(1); LI W.(2); LIPOWICZ P.(2); DUNKHORST W.(3); KOCH W.(3)
    (1) Eurofins Lancaster Laboratories, c/o Altria Client Services LLC, Research, Development and Regulatory Affairs, Richmond, VA, U.S.A.; (2) Altria Client Services LLC, Research, Development and Regulatory Affairs, Richmond, VA, U.S.A.; (3) Fraunhofer ITEM, Department of Aerosol Technology, Hannover, Germany
    A new sensor based on light scattering has been designed to perform highly time resolved measurements of the mass concentration and the mass median diameter (MMD) of aerosols formed in e-cigarettes. Aerosols generated in e-cigarettes are spherical,...
  2. CORESTA Congress, Berlin, 2016, Agronomy/Phytopathology Groups, AP 16

    Role of polyamines in leaf ripening of low alkaloid tobacco varieties

    NÖLKE G.(1); VOLKE D.(1); CHUDOBOVA I.(1); HOUDELET M.(1); LUSSO M.(2); FREDERICK J.(2); WAREK U.(2); STRICKLAND J.(2); XU D.(2); FISCHER R.(1); SCHINKEL H.(1); SCHILLBERG S.(1)
    (1) Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Aachen, Germany; (2) Altria Client Services LLC, Research, Development and Regulatory Affairs, Richmond, VA, U.S.A.
    Traditional breeding and molecular approaches have been used to develop tobacco varieties with reduced nicotine and secondary alkaloid levels. However, low-alkaloid (LA) tobacco varieties often show impaired leaf ripening and senescence leading to...
  3. CORESTA Congress, Berlin, 2016, Agronomy/Phytopathology Groups, AP 25

    Sucker control through biotechnology

    XU D.(1); GRUNDMANN L.(2); SHEN Y.(1); NOLL G.(2); YANG J.(1); KUDITHIPUDI C.(1); FREDERICK J.(1); PRUEFER D.(2); WAREK U.(1); STRICKLAND J.(1)
    (1) Altria Client Services LLC, Research, Development and Regulatory Affairs, Richmond, VA, U.S.A.; (2) Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Muenster, Germany
    Tobacco plants exhibit strong apical dominance that effectively inhibits axillary bud development. However, upon shoot apical meristem removal (topping), loss of apical dominance quickly allows axillary buds to grow (suckers) resulting in yield loss...
  4. CORESTA Congress, Berlin, 2016, Smoke Science/Product Technology Groups, ST 24

    A CFD model for the smouldering combustion of the cellulosic substrate during the ignition propensity test

    GUINDOS P.(1); PATEL A.(1,2); KOLB T.(1)
    (1) Fraunhofer Institute for Molecular Biology and Applied Ecology IME, Aachen, Germany; (2) TU Braunschweig, Braunschweig, Germany
    An experimental and numerical investigation was conducted to characterise the influence of the cellulosic substrate used to assess the ignition propensity (IP) of cigarettes. The objective was to better understand the poor repeatability of the test...
  5. TSRC, Tob. Sci. Res. Conf., 2012, 66, abstr. 28

    CSEO – The cigarette smoke exposure ontology

    YOUNESI E.(1), COGGINS C.(2); ANSARI S.(3); HOENG J.(3); PEITSCH M.(3); HOFMANN-APITIUS M.(1)
    (1) Fraunhofer Institute for Algorithms and Scientific Computing SCAI, Sankt Augustin, Germany; (2) Carson Watts Consulting, King, NC, USA; (3) Philip Morris International R&D, Neuchâtel, Switzerland
    In the past years, significant progress has been made in the development and use of experimental settings for collection of massive and precise experimental data on tobacco exposure and the diseases induced by it. Despite the growing number of such...
  6. CORESTA Congress, Kyoto, 2004, SS 12

    The use of the modified CULTEX® system for the direct exposure of bacteria to mainstream cigarette smoke

    AUFDERHEIDE M.; MOHR U.
    Fraunhofer Institut Toxikologie und Experimentelle Medizin, Dept. of In Vitro Toxikology, Hannover, Germany.
    The evaluation of the mutagenic activity of mainstream cigarette smoke is mostly based on studies with condensates or extracts in the standard Ames assay. Due to the methodological difficulties of testing air contaminants in their natural gaseous or...
  7. CORESTA Congress, New Orleans, 2002, ST 04

    Direct exposure of human lung cells to native cigarette mainstream smoke - methodical aspects leading to a new in vitro exposure set-up

    RITTER D.; KNEBEL J.W.; AUFDERHEIDE M.
    Fraunhofer Institute of Toxicology and Aerosol Research, Hannover, Germany.
    Numerous approaches have been taken to test the biological activity of cigarette smoke in vitro. The various experimental approaches involve strategies leading to different exposure situations for the cells. From the point of view of smoke testing,...
  8. CORESTA Congress, New Orleans, 2002, STPOST 03

    A new system for the direct in vitro exposure of human lung cells to native cigarette mainstream smoke

    RITTER D.; KNEBEL J.W.; AUFDERHEIDE M.
    Fraunhofer Institute of Toxicology and Aerosol Research, Hannover, Germany.
    A system for the direct in vitro exposure of human lung cells to native cigarette mainstream smoke is presented. The set-up consists of a smoking machine which smokes cigarettes according to international standards. It includes a dilution system for...
  9. Bull. Spec. CORESTA Congress, Lisbon, 2000, p. 107, APOST6 (adjourned)

    Estimation of the state of nitrogen nourishment of tobacco using the N-tester

    KOWALCZYK-JUSKO A.; KOSCIK B.
    University of Agriculture, Lublin - Institute of Agricultural Sciences, Zamosc, Poland.
    The purpose of this work, based on a three years of field experiment, was to inspect whether it is possible to use a chlorophyll meter in fixing the nitrogen doses used in growing flue-cured tobacco. The relationship between the capacity of nitrogen...
  10. Bull. Spec. CORESTA Congress, Brighton, 1998, p. 112, APOST13

    Influence of aqua terra hydrogel on growth, development and yield of light cigarette tobacco

    KOSCIK B.; KOWALCZYK-JUSKO A.
    University of Agriculture, Lublin - Institute of Agricultural Sciences, Zamosc, Poland.
    The aim of introductory field and pot experiments which were carried out in Zamosc in the years of 1995-1997 was to study the influence of Aqua Terra hydrogel on the growth, development and yield of light cigarette tobacco. Hydrogels are substances...