Evaluation of Commercial Corrosion Sensors for Real-Time Monitoring of Pipe Wall Thickness under Various Operational Conditions.

In this study, we investigated the performance and reliability of commercial corrosion sensors for monitoring the integrity of piping systems in various fluid environments as an alternative to ultrasonic transducers. To this end, we investigated pipes' wall-thinning using commercial electrical resistance (ER), linear polarization resistance (LPR), and ultrasonic transducer (UT) sensors under various operating environments. A pilot-scale closed-loop test bed was built to simulate a real pipeline flow situation, from which the sensor data were collected and analyzed.

[Studies Of The Larval Trematodes From Brackish Water Fishes: 2. Observation On Metagonimus Yokogawai Katsurada, 1912].

The Parasitological investigation on the encysted metacercariae in brackish water fish, Tribolodon taczanowskii Steindachner, in the downstream of Hyungsan river which is located in Kyungpook province of Korea, were carried out, and the following results were obtained. 1)Metacercariae of Metagonimus species were found in seventy five fishes (40.5 percent) out of 185 examined.