Scientific Research Publishing

Read  full  paper  at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=53563#.VMiSNyzQrzE Author(s)   Leandro Glaydson da Rocha Pinho 1 , Pedro Henrique Monnerat 2 , André Assis Pires 1 , Marta Simone Mendonça Freitas 2 , Claudio Roberto Marciano 2   Affiliation(s) 1 Instituto Federal do Espírito Santo, Campus Itapina, Colatina, Brazil . 2 Universidade Estadual do Norte Fluminense, Campos dos Goytacazes, Brazil . ABSTRACT The diagnosis of boron deficiency in coconut palms has been hampered by lack of information about its distribution in the plant. Two experiments were conducted, one in a greenhouse to induce boron deficiency in dwarf green coconut palms, and other in the field, in which the plants received doses of boric acid, B(OH) 3 . The objective was to verify symptoms of boron deficiency and boron content variation in canopy, leaves and folioles (or leaflets). Boron deficient plants led leaves and folioles to become ...

Read  full  paper  at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=53291#.VLx7b8nQrzE Author(s)    Musa Atar , Nihat Döngel , Hamza Çinar Affiliation(s) Wood Products Industrial Engineering Department, Technology Faculty, Gazi University, Ankara, Turkey . ABSTRACT This study was performed to determine the effects of varnishing after impregnation with boron compounds on the combustion properties of Scotch pine. For this purpose, test samples prepared from Scotch pine ( Pinus sylvestris Lipsky ) wood were impregnated according to ASTM-D 1413-99 standard with boric acid (Ba) and borax (Bx) by vacuum technique. After impregnation, surfaces were coated by cellulosic (Cv), synthetic (Sn), polyurathane (Pu), waterborne (Wb), acrylic (Ac) and acid hardening (Ah) varnishes in accordance with ASTM D-3023 standard and then, combustion temperature was determined. According to material and process type, combustion temperature was...