BOPI 02 BR/2024 REPERTOIRE NUMERIQUE 14 An aqueous composition comprising: sulfuric acid; a compound comprising an amine moiety; a compound comprising a sulfonic acid moiety; and a peroxide. Said composition being capable of delignifying biomass. Fig. 1 ________________________________________ (11) 21386 Consulter le mémoire (51) F16L 15/04 (2018.01) ; F16L 15/06 (2018.01) (21) 1202200347 - PCT/JP2021/015974 (22) 20/04/2021 (30) JP n° 2020-110341 du 26/06/2020 (54) Threaded joint for steel pipe. (72) OKU, Yousuke (JP); WADA, Akira (JP) et ANDO, Yoshinori (JP) (73) 1-NIPPON STEEL CORPORATION, 6-1, Marunouchi 2-chome, Chiyoda-ku, TOKYO 1008071 (JP) et 2-VALLOUREC OIL AND GAS FRANCE, 54 rue Anatole France, AULNOYE-AYMERIES 59620 (FR) (74) SPOOR & FISHER Inc. NGWAFOR & PARTNERS SARL, The House of Gideon, Golf/Bastos Quarter, Opposite The American Embassy, Entrance-St. John Paul II Boulevard, P.O. Box 8211, YAOUNDE (CM). (57) A high-torque threaded connection with male and female threadforms constituted by wedge threads is provided with high shear resistance and high torque resistance. The radius of curvature rl of the base of the load flank of the first thread 111, located at the end of the male threadform 11 associated with the tip, is not lower than the thread height Th><0.14, and more preferably not lower than Th><0.16, to improve the shear resistance of the first thread 111. Further, the thread pitch may be reduced to increase the number of threads to increase the area of contact for load tlanks, or only the radius of curvature of the base of the load flank of the first thread located at the end of the male threadform associated with the tip may be increased and smaller radii of curvature may be provided for the other portions to increase the area of contact for load tlanks, thereby maintaining high torque resistance. Fig. 1 ________________________________________ (11) 21387 Consulter le mémoire (51) F42D 1/08 (2018.01); F42D 3/04 (2018.01); F42D 5/00 (2018.01) ; F42D 99/00 (2018.01) (21) 1202200401 - PCT/US2021/033411 (22) 20/05/2021 (30) US n° 63/028, 345 du 21/05/2020; US n° 63/124, 412 du 11/12/2020; US n° 17/324, 704 du 19/05/2021 (54) Distinct element rock blasting movement methods, apparatuses, and systems. (72) PREECE, Dale S. (US) et BHUIYAN, ABM Abdul Ali (US)
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