Abstract: The present invention provides a blood marker for renal cancer, more specifically, a blood marker that can be practically used for clinical diagnosis of renal cancer. The present invention also provides a blood marker that can be practically used for follow-up after treatment such as surgery and during treatment such as medication for renal cancer. A blood marker for renal cancer selected from the group consisting of Galectin-1, Galectin-3, and ?-enolase. Galectin-1 and/or Galectin-3 as a blood marker for renal cancer for use in an examination performed before diagnostic imaging. ?-Enolase as a blood marker for renal cancer for use in monitoring during and/or after treatment for renal cancer.

Abstract: A low-hydrogen-type covered arc welding electrode for high-strength Cr--Mo steels comprising a core wire and a covering material, is characterized in that the contents of components and impurities in the covered arc welding electrode are specified, the water content in the entire welding electrode is controlled to 50 to 600 ppm by weight, and the basicity BL of the covering material expressed by the following equation is controlled to 2.0 to 8.0: (BL=(?CaO!.sub.f +?MgO!.sub.f +?BaO!.sub.f +?CaF.sub.2 !.sub.f +?Na2O!.sub.f +?K.sub.2 O!.sub.f +0.5.times.(?FeO!.sub.f +?MnO!.sub.f))/(?SiO.sub.2 !.sub.f +0.5.times.(?Al.sub.2 O.sub.3 !.sub.f +?TiO.sub.2 !.sub.f +?ZrO.sub.2 !.sub.f))), wherein ?Y!.sub.f represents a content of chemical component Y in the covering material by weight percent to the total weight of the covering material.

Abstract: A submerged arc welding method for a high strength (2.25%-3%)Cr-3% Mo-V steel, to obtain a weld metal excellent in strength at room temperature and high temperature, toughness, and creep strength, after SR, temper brittleness resistance, cold crack resistance and SR crack resistance. The Cr-Mo steel contains: 2.00 to 3.25% of Cr, 0.90 to 1.20% of Mo, and V as essential components, and Nb, Ti, B and Ca as needed. A welding heat input is in the range of from 20 to 50 kJ/cm. The solid wire contains 0.09 to 0.19% of C, 0.30% or less of Si, 0.50 to 1.40% of Mn, 2.00 to 3.80% of Cr and 0.90 to 1.20% of Mo. The bonded flux contains 5 to 20% of SiO.sub.2, 20 to 40% of MgO, 2.4 to 12% of a metal fluoride (F-converted value) and 3 to 12% of a metal carbonate (CO.sub.2 -converted value). A weld metal contains 0.08 to 0.15% of C, 0.05 to 0.30% of Si, 0.50 to 1.20% of Mn, 0.030 to 0.060% of O, 0.10 to 0.50% of V and 0.005 to 0.035% of Nb. P and Ti in the weld metal are restricted to 0.010% or less and 0.