BACKGROUND Sphaerexochinae is a speciose and widely distributed group of cheirurid trilobites. Their temporal range extends from the earliest Ordovician through the Silurian, and they survived the end Ordovician mass extinction event (the second largest mass extinction in Earth history). Prior to this study, the individual evolutionary relationships within the group had yet to be determined uti...

OBJECTIVE: To find the reference values for 30-second sit-to-stand test and study correlation of anthropometric measures with in community-dwelling geriatric Indian population. MATERIAL AND METHODS: 136 individuals aged >60 years were recruited this cross-sectional observational study. The was conducted India. After initial screening, measurements recorded. Then, conducted. RESULTS: Normal d...

Two experiments were conducted to determine the relative impact of direct and indirect (ad hominem) attacks on science claims. Four hundred and thirty-nine college students (Experiment 1) and 199 adults (Experiment 2) read a series of science claims and indicated their attitudes towards those claims. Each claim was paired with one of the following: A) a direct attack upon the empirical basis of...

Geodetic observations in the oceans are important for understanding plate tectonics, earthquake cycles and volcanic processes. One approach to seafloor geodesy is use of pressure gauges sense vertical changes elevation after correcting variations weight overlying atmosphere. A challenge using tendency sensors drift. The A-0-A method a new valve used periodically switch, short time, measured fro...

Spanish ship Santa María ground to a halt on a coral reef off the coast of an island known to its Taíno inhabitants as Ayiti. The loss of don Cristóbal Colón’s flagship forced him to leave a contingent of thirty-nine crewmembers behind to construct a fortified settlement they dubbed Villa de la Navidad, while the admiral and the rest of his fleet departed to report to their sovereign patrons in...