Ihi Corporation

Nippon Soda Co., Ltd.

Rie Sakamoto

Naoki Oiwa

Satoshi Yamanaka

Kenji Nakamura

Takao Iwasa

Takayuki Watanabe

Hiroaki Kawashima

Katsunori Tanaka

Kotaro Shibayama

Yasuhiro Otake

Riho Taguchi

Rieko Nakamura

Hiroto Suzuki

Tadafumi Kanayama

Mitsuyoshi Tsunori

Kaoru Nishimura

Atsuko Nabeta

Miho Takahashi

Tsuyoshi Hoya

A compound represented by formula (I) or formula (II): 

Pyridinium salt and pest control agent

A liquid insecticide composition is provided containing a neonicotinoid-based compound, a silicone-based surfactant, and a water-soluble organic solvent. Furthermore, a method is provided for enhancing an insecticidal effect which includes using a silicone-based surfactant in combination with a neonicotinoid-based compound as an insecticidal active ingredient.

Liquid insecticide composition

A heating process makes a temperature of joining surfaces Wa and Ta of a pair of metal parts W and T at the start of a first joining process equal to 20% or greater, preferably, 40% or greater of a melting point of material of the metal parts W and T. The heating process makes a heating depth h of the pair of metal parts W and T at the start of the first joining process equal to 1.0 mm or greater.

Friction joining method and joined structure

In a friction stir welding apparatus, workpiece fixing surface plates () are installed on a framework (). In addition, a welding apparatus main body () including a bobbin tool () having a probe () protruding upward from a gap (), a spindle () configured to attach the bobbin tool () to an upper end section thereof, and a spindle driving apparatus () configured to pivot the spindle () is movably installed at the framework () in a longitudinal direction of the gap () via linear guide mechanisms () installed at both sides of the welding apparatus main body (). Further, a moving apparatus () is installed to move the welding apparatus main body () in the longitudinal direction of the gap (). According to the friction stir welding apparatus, since the welding apparatus main body () is supported by the framework () via both of the linear guide mechanisms (), a large welding reaction force can be sufficiently received. In addition, since workpieces () are welded from a lower side, the workpiece size is not limited by a size of the apparatus.

Friction stir welding apparatus

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Tokyo, Japan

Rie Sakamoto