01549naa a2200277 a 450000100080000000500110000800800410001910000190006024500680007926000090014730000160015652006340017265000210080665000220082765300330084965300130088265300120089565300320090765300150093965300140095465300150096865300130098370000200099670000220101677302330103810270611999-12-22       1997    bl ---       0--  u    #d1 aRABELLO, L. M.  aComputerized system for embryos freezing protocols development.  c1997  ap. 346-350.  aWe developed a computerized system for mammalian embryos freezing. The design was developed in order to obtain an optimum performance. Besides, we also used a discrete control in the process which is equivalent of three mode proportional-plus-integral-plus-derivative (PID) controller for digital feedback loops. Moreover a number of dedicated and discrete algorithms were developed and the systems allows to the users the program of several different ramps, i.e., in the range of -40 degrees C to + 40 degrees C starting with 0,1 degree C/minute. The software of the system was developed in C++ language under a DOS environment.  acryopreservation  aCriopreservação  aAgricultural instrumentation  aEmbrioes  aEmbryos  aInstrumentacao agropecuaria  aProtocolos  aProtocols  aTechniques  aTecnicas1 aCRUVINEL, P. E.1 aBERTUCCI NETO, V.  tIn: GAZZINELLI, R.; MOREIRA, R.L.; RODRIGUES, W.N., ed. Physics and industrial development: bridging the gap: proceedings of the 2nd International Conference, Belo Horizonte, Brazil, July 1996. Singapore: World Scientific, 1997.