EXPERIMENTAL STUDY ON FREEZING MODE TO REDUCE FROST HEAVE

Experimental Study on Freezing Mode to Reduce Frost Heave

Frost heave is an important factor affecting the safety and practicability of buildings in cold regions or artificial freezing engineering.In order to reduce frost heave, frost-susceptible silty clay was used in Ski de fond - Enfant - Fixations - Skate a one-dimensional frost heave testing system in three different freezing modes.The results show t

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Molecular phylogenetics uncovers two new species in the genus Phyllobates (Anura, Dendrobatidae): the terrible frog gets two new sisters

True poison-dart frogs (Phyllobates, Dendrobatidae) evolved the ability to secrete batrachotoxins, the most powerful alkaloids known to date.The genus comprises five species whose systematics, at first glance, appeared clear.The most derived clade would include two Colombian species (P.terribilis and P.bicolor) with the highest toxicity, the larges

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