A method to detect and characterize at least one defect in a specimen using an apparatus comprises steps of: generate a plurality of wave signals on the specimen , by using an impact source , for the wave signals to propagate within the specimen;…

Radiography testing (RT) is one of the techniques and methods in the field of Non Destructive Testing (NDT). It is widely used in various industries, especially in the oil and gas industry, either for the purpose of maintenance or during the…

Dendrobium Sonia KeenaPearl adalah variasi mutan baru. Ia terhasil melaui proses mutagenesis. Dendrobium sonia menggunakan sinaran gamma. Mutan ini adalah gabungan warna putih mutiara dan ungu lembut di tengah dan tepi bunga.