We investigated the feeding habits of the teiid lizard Cnemidophorus littoralis in the markedly seasonal habitat of Restinga da Barra de Maricá (22 degrees 57'S, 43 degrees 50'W), Rio de Janeiro State, Brazil, to evaluate to what extent its diet is ontogenetically, sexually, and/or seasonally conservative. Lizard stomach contents were analyzed, identified, counted, estimated for volume (in mm3)...

There is a need to better understand the threshold for paediatric skull fracture. Historically, drop tests of cadaver heads have been used to estimate thresholds. However, societal and ethical considerations prevent tests with child cadavers. Therefore, researchers have attempted to estimate the threshold by scaling adult tolerance data. Recent work suggests that mass and material scaling of ad...

In eusocial insects, worker polymorphism is shaped by several factors, including colony size, queen mating frequency, and the timing of queen-worker differentiation during larval development. a comparative study 18 species Cataglyphis desert ants representing wide range sizes, we used phylogenetically controlled analyses to examine correlations between head width variation (i.e., polymorphism) ...

Coaxial Laser wire Direct Energy Deposition (L-DED) promises a direction-independent buildup due to centric supply of the welding material. To fabricate Functionally Graded Materials (FGMs), processing head was designed that is capable supplying two materials into zone. This study investigates direction dependency seams produced by 1.4718 metal wires with diameter 0.8 mm in coaxial laser setup ...

In species of similar shape and size, biometric analyses make it possible to establish differences. Within one species, biometrics can help researchers detect differences between populations analyze their adaptations environmental conditions. Until now little was known about the Iberian Boyeria irene (Odonata: Aeshnidae), a large living mainly in southern Europe. Eight variables were studied ma...

Simpler proofs that DAuxPDA-TIME(polynomial) equals LOGDCFL and that SAC 1 equals LOGCFL are given which avoid Sudborough's multi-head au-tomata Sud78]. The rst characterization of LOGDCFL in terms of polynomial proof-tree-size is obtained, using circuits built from the multiplex select gates of FLR96]. The classes L and NC 1 are also characterized by polynomial size such circuits: \self-simila...

The nuclear magnetic resonance spectra of phosphatidylethanolamines, phosphatidylcholines, phosphatidylserines, and sphingomyelin are discussed in terms of molecular structure. The factors influencing the band width of the protons of the polar head of phosphatidylcholines are surveyed. It is found that the band widths vary with solvent and that this variation can perhaps be correlated with the ...