Now showing items 21-40 of 468

    • IAWA Newsletter 

      International Archive of Women in Architecture (International Archive of Women in Architecture, 1994)
    • Assessment of Virginia Coalfield Region Capability to Support an Electric Power Generation Industry 

      Zipper, Carl E.; Henritze, Thomas K.; Randolph, John (Virginia Tech. Virginia Center for Coal and Energy Research., 1994-01)
      This paper describes the results of research conducted to assess the capacity of the Virginia coalfields to support electric power generation facilities. The research also addressed potential economic impacts of power ...
    • An Analysis of Household Water Supply Impacts by Underground Coal Mining in Virginia 

      Zipper, Carl; Balfour, William; Randolph, John; Roth, Richard (Virginia Tech. Virginia Center for Coal and Energy Research., 1994-05)
      Underground coal mining can affect wells and springs used as water supplies. Subsidence caused by underground mining is generally acknowledged to be a primary cause of groundwater resource effects. In coal producing regions ...
    • Virginia Coal, 1994 

      Randolph, John; Jones, Johanna R.; Prelaz, L.J.; Zipper, Carl (Virginia Tech, 1994-07)
      A complete annual directory and data reference source for all mines licensed in the Commonwealth. Mine listings for each operation include company and mine name, location and contact person, coal owner, seam worked, ...
    • IAWA Newsletter 

      International Archive of Women in Architecture (International Archive of Women in Architecture, 1995)
    • On the Lawrence-Doniach and Anisotropic Ginzburg-Landau models for layered superconductors 

      Chapman, S. J.; Du, Q.; Gunzburger, M. D. (Siam Publications, 1995-02)
      The authors consider two models, the Lawrence-Doniach and the anisotropic Ginzburg-Landau models for layered superconductors such as the recently discovered high-temperature superconductors. A mathematical description of ...
    • In-state Economic Impacts of the Virginia Coal Industry and Potential Coal Production Declines 

      Zipper, Carl (Virginia Tech. Virginia Center for Coal and Energy Research., 1995-05)
      Production and transportation of coal make a significant contribution to the Virginia economy. Several recent reports, however, indicate that Virginia coal production appears vulnerable to substantial decline in the near ...
    • Virginia Coal, 1995 

      Randolph, John; Jones, Johanna R.; Prelaz, L.J.; Zipper, Carl (Virginia Tech, 1995-07)
      A complete annual directory and data reference source for all mines licensed in the Commonwealth. Mine listings for each operation include company and mine name, location and contact person, coal owner, seam worked, ...
    • Economic Impacts of Virginiais Natural Gas Industries 

      Zipper, Carl; Gilroy, Leonard (Virginia Tech. Virginia Center for Coal and Energy Research., 1995-09)
      This study estimates the contributions of the natural gas industries to Virginia's economy. Activities covered by this study include the production of natural gas and associated products from wells in southwestern Virginia, ...
    • Energy Outlook, Summer 1996 

      Unknown author (Virginia Tech, 1996)
      The mission of this quarterly six-page newsletter was to disseminate coal and energy related news, information and research results which have particular importance to the Commonwealth. Energy Outlook reported on research ...
    • Energy Outlook, Spring 1996 

      Unknown author (Virginia Tech, 1996)
      The mission of this quarterly six-page newsletter was to disseminate coal and energy related news, information and research results which have particular importance to the Commonwealth. Energy Outlook reported on research ...
    • Energy Outlook, Fall 1996 

      Unknown author (Virginia Tech, 1996)
      The mission of this quarterly six-page newsletter was to disseminate coal and energy related news, information and research results which have particular importance to the Commonwealth. Energy Outlook reported on research ...
    • IAWA Newsletter 

      International Archive of Women in Architecture (International Archive of Women in Architecture, 1996)
    • Zero-current transition PWM converters 

      Center for Innovative Technology; Intellectual Properties | Kft; Virginia Polytechnic Institute and State University; Lee, Fred C.; Hua, Guichao C. (United States Patent and Trademark Office, 1996-01-23)
      A zero-current transition pulse-width modulated (ZCT-PWM) d.c.-d.c. converter allows minority-carrier semiconductor devices such as, for example, bipolar junction transistors (BJTs), insulated gate bipolar transistors ...
    • Effects of Virginia Coalfield Employment Enhancement Tax Credit Legislation 

      Zipper, Carl E.; Kambhampaty, S. Murthy (Virginia Tech. Virginia Center for Coal and Energy Research., 1996-03)
      Coal mining is the major industry in Virginia's far southwestern counties. Coal transportation supports employment in other parts of the state. In 1995, the Virginia General Assembly passed, and the Governor signed, ...
    • Virginia Coal, 1996 

      Karmis, Michael; Jones, Johanna R.; Prelaz, L.J.; Zipper, Carl (Virginia Tech, 1996-07)
      A complete annual directory and data reference source for all mines licensed in the Commonwealth. Mine listings for each operation include company and mine name, location and contact person, coal owner, seam worked, ...
    • IAWA Newsletter 

      International Archive of Women in Architecture (International Archive of Women in Architecture, 1997)
    • Energy Outlook, Spring 1997 

      Unknown author (Virginia Tech, 1997)
      The mission of this quarterly six-page newsletter was to disseminate coal and energy related news, information and research results which have particular importance to the Commonwealth. Energy Outlook reported on research ...
    • Energy Outlook, Winter 1996-1997 

      Unknown author (Virginia Tech, 1997)
      The mission of this quarterly six-page newsletter was to disseminate coal and energy related news, information and research results which have particular importance to the Commonwealth. Energy Outlook reported on research ...
    • The Clean Air Act Acid Rain Program: Implications for Virginia’s Coal Producers 

      Gilroy, Leonard; Zipper, Carl E. (Virginia Tech. Virginia Center for Coal and Energy Research., 1997-05)
      The Clean Air Act Amendments of 1990 (CAAA90) established a national program to control sulfur dioxide (SO₂) air emissions that contribute to acid rain formation. The program takes a market-based approach that includes ...