. . . . "the resistance of a material to permanent deformation under an applied force." . . . "Hardness" . . . . "Christos Vasileiou" . "2026-01-16T08:18:40.026Z"^^ . . . . . . . . . "RSA" . "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAz1OobdRASd9SftHrLhG905OXjv8DHndvyWzXRJ5EDFPankMSnHZPHK+g2qEeRWdonstt55CLrpTpWsVv9xRtTqPidXHbnWLBXX42iCB+EnZNoKqAVKF5GxkSR38S0uTTq3aeQJbw2kTpx6LMkspmuH95fgAI/lfqPWrxdlI98jIeHQ14UXZpiWmkkvPgC9GVgmwHiG1hB/NCA2fKCOxVodN44OfhAPtkWmPJ40IcGPSalI4HRqgLLI5PabdRk3PiG81cUngmQU1Xk6EapzkRJGenkOlGsC5L4ktEPO6LS9uBMLTMLQDtGtkrcwqg5HmeKv7Ili3vgr3LL8/GaBBOLQIDAQAB" . "FlHsE92NddPJk2bwY17lS+RYaY1jk2TyiIzltR+asZTe9kPTKravBjI4jwycAQacLakc5WBkxCPLDCHAL4OTS0mq2UqYlwFHxCvNgbOg6pnyrCsp5VU2bTW7Dz+UPg/LsgEKLrKQFQRWQKO4t+j+RTe4kd17kFzeJL66VsYhk+OFCZCwBOU7J8jUGprIeC3WaiK5I08FMJNNmaHqUQN2gS2FDDdH0N6k+btSEwlEb2iTN3p9fDSeJjYEnKieTvU9aU4kJoexh4S7lHU0USFYEozH6Kq0gsa7ivPnCRKpmqp3OKXY7Tmop8MIIl1R54VvqO9bH3cb8t6aqV1orvT5aw==" . . .