Italian version of the Headache Disability Inventory: Cross-cultural adaptation, validity, and reliability.

Objective: To translate and cross-culturally adapt the Headache Disability Inventory (HDI) into Italian and study its reliability and validity.

Methods: A total of 132 participants with primary and secondary headaches were included. The translation was performed following international guidelines with forward and back translation procedures.

Shallow reef fish assemblage from Fernando de Noronha Archipelago, Southwest Atlantic.

Background: The paper presents an extensive dataset of the shallow reef fish communities and habitat characteristics in the Fernando de Noronha Archipelago (Southwest Atlantic). The data were collected from August to October 2006 in the Fernando de Noronha main island. To evaluate the shallow reef fish communities, 165 visual censuses were performed in eight different localities in the Fernando de Noronha Archipelago.

Modulation of mitochondrial dynamics genes and mtDNA during embryonic development and under UVB exposure.

Studies using the embryos of the freshwater prawn Macrobrachium olfersii have reported changes in embryonic cells after exposure to ultraviolet B (UVB) radiation, such as DNA damage and apoptosis activation. Considering the importance of mitochondria in embryonic cells, this study aimed to characterize the aspects of mitochondrial morphofunctionality in M. olfersii embryos and mitochondrial responses to UVB radiation exposure.

The shard test and nanoporomechanics reverse classical paradigm of cement hydration being contractive.

Le Chatelier in 1887 and Powers in 1947 demonstrated that the volume of nanoscale C-S-H (calcium silicate hydrate) particles formed during hydration is smaller than the combined volume of the reactants-the anhydrous Portland cement and water. Hydration has thus been considered as contractive. An experiment shows that the opposite is true above the nanoscale.