A relatively low molecular weight, mid-range vinylidene content PIB polymer product and a process for making the same. The present invention proposes a) a thermo-sensitive self-forming liquid component, being water-based and containing at least a polycationic polymer such as chitosan, and an organic mono-phosphate source, which is a solution at a pH ranging from 6. The invention further relates to a storage medium for storing data representation of the above computer game and to a method of playing the computer game of the present invention using a computer. An oil groove is formed in the circumferential direction on an inner circumferential surface of the first half bearing. The microarray reader further includes a sensor that receives the fluorescent light emitted by the excited molecules in the buffer solution to generate a signal. The present invention provides a material for treating aneurysms, which is composed of a polymer material containing carbon as a constitutional element, and which is produced by modifying at least a portion of the surface thereof by ion bombardment.