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91 results

  1. TSRC, Tob. Sci. Res. Conf., 2018, 72, abstr. 013

    Method development for pH analysis of ends aerosol and e-liquid

    HEFNER T.(1); ST. CHARLES F.K.(2); ANDERSON J.(3)
    (1) R.J. Reynolds Tobacco Company, Winston Salem, NC, USA; (2) St.Charles Consultancy, Winston Salem, NC, USA; (3) Eurofins Lancaster Labs, Winston Salem, NC, USA
    E-liquids are hygroscopic, non-aqueous liquids containing a small amount of water (~3-15%). When the pH of a non-aqueous liquid is measured using conventional methods and calibration buffers, the value can only be regarded as an "apparent pH". ...
  2. 47th TWC, Tob. Work. Conf., 2016, abstr. 29

    Working towards an increased understanding of the genetics of soil-borne disease resistance in tobacco

    DRAKE K.(1); LEWIS R.S.(1); BAKAHER N.(2); GOEPFERT S.(2); PHILIPPON B.(2); MARK R.(2); PETERSON P.D.(3)
    (1) North Carolina State University, Raleigh NC USA; (2) Philip Morris International, Neuchatel, Switzerland; (3) Clemson University, Florence SC USA
    Black shank and bacterial wilt, caused by Phytophthora nicotianae and Ralstonia solanacearum, respectively, are the most important diseases affecting tobacco production in the United States. An increased understanding of the genetic systems controlling ...
  3. CORESTA Congress, Berlin, 2016, Agronomy/Phytopathology Groups, AP 41

    Investigating the genetics of polygenic soil-borne disease resistance in tobacco

    LEWIS R.S.(1); DRAKE-STOWE K.(1); BAKAHER N.(2); GOEPFERT S.(2); PHILIPPON B.(2); MARK R.(2); PETERSON P.(3)
    (1) North Carolina State University, Raleigh, NC, U.S.A.; (2) Philip Morris International R&D, Philip Morris Products S.A, (part of Philip Morris International group of companies), Neuchâtel, Switzerland; (3) Clemson University, Florence, NC, U.S.A.
    Bacterial wilt and black shank, caused by Ralstonia solanacearum and Phytophthora nicotianae, respectively, are the most important diseases affecting tobacco production in the United States. An increased understanding of the genetics controlling ...
  4. TSRC, Tob. Sci. Res. Conf., 2016, 70, abstr. 77

    A robust method for evaluating the pH of e-liquids

    ST. CHARLES F.K.(1); MOLDOVEANU S.(2); SCOTT W.(2)
    (1) St. Charles Consultancy, Lewisville, NC, USA; (2) R.J. Reynolds Tobacco Co., Winston-Salem, NC, USA
    The measurement of pH is one of the simplest and most common analytical methods practiced in the laboratory. The pH-meter is calibrated using certified buffers, the electrode is placed in the solution, and if a reading is obtained, the value is used. In ...
  5. 46th TWC, Tob. Work. Conf., 2014, abstr. 29

    Variable rate irrigation in South Carolina flue-cured tobacco

    HENDERSON R.D.; GOODEN D.T.; FORTNUM B.A.
    Clemson University, Pee Dee Research and Education Center, 2200 Pocket Road, Florence, SC 29506-9706, USA
    Extended periods of drought are not uncommon in the flue-cured tobacco production area of South Carolina during the growing season. Timely application of sufficient volumes of water during critical phases of crop development can have a dramatic impact on ...
  6. 46th TWC, Tob. Work. Conf., 2014, abstr. 42

    Solar assisted curing in flue-cured tobacco

    HENDERSON R.D.; REED T.D.; GOODEN D.T.; FORTNUM B.A.
    Clemson University, Pee Dee Research and Education Center, 2200 Pocket Road, Florence, SC 29506-9706, USA
    The objective of this study was to assess the relative efficiency of a prototype solar flue-curing barn that utilizes heat collected in a plenum around the outer metal wall of the barn to preheat the air going into the barn and burner. Part of this ...
  7. 46th TWC, Tob. Work. Conf., 2014, abstr. 43

    Curing efficiency studies with Bulk-Tobac systems in South Carolina

    GOODEN D.T.; BARNES M.; BREEL J.; JOHNSON B.; JOHNSON W.
    Clemson University, Pee Dee Research and Education Center, 2200 Pocket Road, Florence, SC 29506-9706, USA
    The objective of this study was to compare the efficiency of Bulk-Tobac tobacco curing systems in South Carolina. Studies were conducted on different barn types at two locations over two years. At location 1, three DeCloet barns were used for comparison; ...