This method uses anodization instability with high electric potentials and mildly acidic electrolytes that are maintained at low temperature.
Degradation seems to be decreased when whole body were extracted and maintained at low temperature or the source of enzymes (abdomen) was removed (Fig. 12).
Under reasonable sanitary conditions, for instance low microbial load, juices can be maintained at low temperature in a carbon dioxide atmosphere (Konja and Lovric, Nagy, et al., 1993).
Similarly, RNA-binding proteins that contain low sequence-complexity domains assemble into ordered fibers that coalesce into hydrogels when maintained at low temperature (Frey et al., 2006; Kato et al., 2012).
Rapid freezing is used to bring the sample to the solid state without dehydration or ice crystallization, and the sample is maintained at low temperature during transfer and observation in the EM.
After fertilization, eggs were transferred to 16 incubation tanks, from which 8 tanks were maintained at low temperature (4 ± 0.5°C), whereas the remaining tanks were maintained at high temperature (9.5 ± 0.5°C), which was reached by gradual increment (~0.5°C every 3 h) [ 74].
Spectra were recorded on a Bruker EMX X-band spectrometer using an ER4119HS cavity, maintained at low temperature by an ESR900 continuous-flow liquid helium cryostat (Oxford Instruments, UK); the sample temperature was measured with a calibrated Cernox resistor (Lake Shore Cryotronics Inc., Westerville, OH).
Spectra were recorded with 1 mW microwave power, microwave frequency 9.36 9.38 GHz, modulation frequency 100 kHz, modulation amplitude 1 mT, time constant 81.92 ms and conversion time 20.48 ms at 12 K, using a Bruker EMX X-band spectrometer with an ER 4119HS high-sensitivity cavity, maintained at low temperature by an Oxford Instruments ESR900 continuous-flow liquid helium cryostat.
Robust magnetoresistance oscillations are observed up to high magnetic fields and maintained at low temperatures, due to the effective reduction of wire dimensions.
These preanalytical issues have traditionally demanded that RNA be isolated and maintained at low temperatures immediately after blood collection.
This possibility is corroborated by observations in Thamnophis sirtalis snakes, in which the blood-flow rate tends to decrease and cephalic circulation to increase when maintained at low temperatures because such vascular changes provide greater protection to vital nerve structures when at low temperatures (Amiel et al., 2011).
