{'fraction_non_alphanumeric': 0.014598540145985401, 'fraction_numerical': 0.0, 'mean_word_length': 5.660194174757281, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Active Temperature Control for Deep-Sea Samples Using Liquid Nitrogen

An active temperature control system was designed for deep-sea samples during retrievals of underwater vehicles. This device is equipped with a sampling basket for underwater vehicles. Using liquid nitrogen makes controlling sample temperatures cheaper and lowers electricity use. Some deep-sea samples including microorganisms will survive upon retrieval. In this study, we calculated a thermodynamic conduction model of liquid nitrogen passing through a coiling tube and tested the effects of liquid nitrogen refrigeration. The active control temperature tests successfully proved the feasibility of this design.