A new physico-chemical process for TAN (total ammonia nitrogen) removal and disinfection is introduced in saline recirculating aquaculture system (RAS), in which the biofilter is replaced with an integrated electrolysis cell and an activated carbon filter. The electrolysis cell which is based on micro current electrolysis combined with UV-light was self-designed. After the fundamental research,...

The lymph nodes of mice actively or adoptively immunized to sheep RBC and/or chicken RBC selectively retain long-lived lymphocytes after challenge with the appropriate antigen. This retention is demonstrable within 8 hr of the time of stimulation, though it probably begins even before this, and it is essentially complete within the first 24 hr. A similar selective retention is seen in nodes reg...

The recirculation system in the maintenance of tortoise will affect several water quality parameters, also known as dynamics. Water such temperature, DO, pH, turbidity, nitrate, nitrite, alkalinity, total hardness, TAN are parameters that directly related to physiological fish. purpose this study was see effect various systems on This used an experimental method with a completely randomized des...

We describe a simple, compact, inexpensive thermal cycler that can be used for the polymerase chain reaction. Based on heat transfer with air to samples in sealed capillary tubes, the apparatus resembles a recirculating hair dryer. The temperature is regulated via thermocouple input to a programmable set-point process controller that provides proportional output to a solid state relay controlli...

Recirculating frequency shifting has attracted much attention for its advantages in the generation of flexible and high-quality optical comb. A new scheme ultra-flat comb system based on single-loop bidirectional recirculating shift is proposed studied this paper. The employs two pairs dual-drive Mach–Zehnder modulators several polarization devices. Compared with method unidirectional recircula...