The design and use of a small light portable craniostat is described. Made of clear polystyrene, with adjustable pegs of the same material, the device is small, light, unbreakable and easily portable. It facilitates rapid and stable positioning of skulls in any position for study of photography.

Modular grammatical formalisms provide an essential step towards improved grammar engineering practices. However, as we depart from traditional deterministic models, some intrinsic static checks are lost. The paper shows why grammar verification is necessary for reliable uses of context-free grammars (CFGs) and parsing expression grammars (PEGs) as modular syntax definitions. Simple conservativ...

Surface-assisted laser desorption/ionization time-of-flight mass spectrometry (SALDI-TOF-MS) using GaP nanoparticles (NPs) prepared by a gas evaporation method was investigated on poly(ethylene glycol)s (PEGs). The mass spectra of PEG and survival yield measurements suggested that larger GaP NPs have a quite high soft ionization ability.

Hand-based verification/identification represent a key biometric technology with a wide range of potential applications both in industry and government. Traditionally, hand-based verification and identification systems exploit information from the whole hand for authentication or recognition purposes. To account for hand and finger motion, guidance pegs are used to fix the position and orientat...

Amoebae of the eukaryotic microorganism Dictyostelium discoideum were found to contain an interconnected array of tubules and cisternae whose membranes were studded with 15-nm-diameter "pegs." Comparison of the ultrastructure and freeze-fracture behavior of these pegs with similar structures found in other cells and tissues indicated that they were the head domains of vacuolar-type proton pumps...

Heterochaete subgelatinosa Bodman (Auriculariales, Basidiomycota) was first described from material collected in Panama and hitherto exclusively known the type locality. We recently re-collected specimens of this species Atlantic forest North-eastern Brazil. Morphological molecular data suggest that H. is not closely related to other Pat. studied with modern methods. Therefore, we here propose ...

Bone ingrowth in porous surfaces of human joint implants is a desired condition for long-term fixation in patients who are physically active (such as in sport or work). It is generally recognized that little actual bone ingrowth occurs. The best clinical results report between 10 and 20% of the total prosthetic surface in contact with bone will feature good bone ingrowth. One inhibiting factor ...