Abstract: The present invention provides an agent for inducing effector memory T cell or an agent for inducing MHC class I for treating or preventing a cancer, comprising a TLR7 agonist which is used with an immune checkpoint inhibitor. And, the present invention also provides a medicament for treating or preventing a cancer, comprising a TLR7 agonist which is used with an immune checkpoint inhibitor.

Abstract: An ornamental display 1 includes a plate-like transparent material 11 having a surface on which a light collecting element pattern 111 is formed, wherein the light collecting element pattern 111 is formed by a plurality of convex lens-shaped light collecting elements 111a arranged two-dimensionally at a predetermined array pitch p with a directional arrangement, and a non-transparent sheet-like through-hole filter 12 having a through-hole pattern formed by a plurality of through-holes 121a arranged two-dimensionally with the same directional arrangement 121 as the directional arrangement of the light collecting element pattern 111 at an array pitch q. In this ornamental display, the transparent material 111 and the through-hole filter 121 are arranged in a manner such that the light collecting element pattern 111 and the through-hole pattern 121 face each other with a predetermined distance d therebetween.

Abstract: A novel flux is provided for use in the low-temperature brazing aluminum materials of varied compositions, the flux being composed of a KCl--NaCl--BaCl.sub.2 base and 0.5-5.0 wt. % of LiF and/or 1.0-10.0 wt. % of ZnCl.sub.2 added to the base. A method of flux brazing a low-melting aluminum material is also provided, and the method is carried out by applying such a novel flux as well as a low-melting brazing agent to the aluminum material portions to be adjoined. The brazing agent is composed of an Al--Si--Zn alloy which contains 3-12% by weight of Si and 15-70% by weight of Zn.

Abstract: In brazing a first metal piece having a tubular joint portion of predetermined length at an end thereof and a second metal piece having a bore for inserting the extremity of the joint portion thereinto by replaced brazing with the extremity of the joint portion inserted in the bore, a plurality of axial grooves having a depth of 0,3 to 1,5 mm and arranged at a spacing of 5 to 30 mm in the circumferential direction are formed in the outer peripheral surface of joint portion of the first metal piece. Each of the grooves has one end extending to the outside of the bore of the second metal piece when the joint portion is inserted in the bore. The gas or residue of flux produced during brazing escapes through the grooves, whereby voids or like defects are prevented from occurring in the fillet of the brazed joint. Since the grooves are all filled up with the brazing filler metal, the brazed joint is given a sufficient bond strength and prevented from permitting leakage there-through.