. . . . "the ratio of the mass of the dry material of a porous body to its true volume, expressed in grams per cubic centimetre or in kilograms per cubic metre." . . . "True density" . "true density of substance" . . . . . "Christos Vasileiou" . "2026-01-26T09:32:50.059Z"^^ . . . . . . . . . . . "RSA" . "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAz1OobdRASd9SftHrLhG905OXjv8DHndvyWzXRJ5EDFPankMSnHZPHK+g2qEeRWdonstt55CLrpTpWsVv9xRtTqPidXHbnWLBXX42iCB+EnZNoKqAVKF5GxkSR38S0uTTq3aeQJbw2kTpx6LMkspmuH95fgAI/lfqPWrxdlI98jIeHQ14UXZpiWmkkvPgC9GVgmwHiG1hB/NCA2fKCOxVodN44OfhAPtkWmPJ40IcGPSalI4HRqgLLI5PabdRk3PiG81cUngmQU1Xk6EapzkRJGenkOlGsC5L4ktEPO6LS9uBMLTMLQDtGtkrcwqg5HmeKv7Ili3vgr3LL8/GaBBOLQIDAQAB" . "TM3MFBBLEgxOYJFd3byvpxyogR26IMMsuHSwU/W2yboxUzOjdvxRlbWo0m0f8/8AIecl2PN2xyo5vqmVH/MiFMLrXi+uZYFS93EsiCJttpjAJLptSJQOtXwgGWivIbJKkAm08iyX2Upx8wk9k5fIMLLdrlECZDvodzFepWqzlgdAzsuDVwez6S+L/Cu/jslC9F/jT9kbXgvpFqGvSa6iryLBxwHTOvVmqZWUBeOW3m9qW44RLyyXo73vtKjztHWw2Pzl/JJGYzT5XtUWl9mUH2ukwxBknauWNdCW58938ikIMCDoqAjH594FUY+BUnx0yV0uyeqNhm4P9gZq4Ye6BA==" . . .