Relationship between spatial ability, visuospatial working memory and self-assessed spatial orientation ability: a study in older adults

This paper describes some novel spatial tasks and questionnaires designed to assess spatial and orientation abilities. The new tasks and questionnaires were administered to a sample of 90 older adults (41 males, age range 57–90), along with some other tests of spatial ability (Minnesota Paper Form Board, Mental Rotations Test, and Embedded Figures Test) and tests of visuospatial working memory (Corsi’s Block Test and Visual Pattern Test). The internal reliability of the new tasks and questionnaires was analyzed, as well as their relationship with the spatial and working memory tests. The results showed that the new spatial tasks are reliable, correlate with working memory and spatial ability tests and, compared with the latters, show stronger correlations with the self-report questionnaires referring to orientation abilities. A model was also tested (with reference to Allen et al. in Intelligence 22:327–355, 1996) in which the new tasks were assumed to relate to spatial ability and predict orientation abilities as assessed by the self-report measures

Localizzazione immunoistochimica delle cellule ad ACTH nell’ipofisi di pesce spada (Xiphias gladius L.)

Pltuitary ACTH cells were immimohistochemically localized in the teleost fish Xiphias gladius L. using anti-hACTH polychnal serum. ACTH cells were found bordering the murohypophysis (NH) branches in the adenohypophysis, scattered in the pars intermedia (PI) and in the PD. Along the NH branches the hACTHimmunoreactive (ir) cells were elongated (medium size 21,27±4,02 um) and disposed in a palized, whereas in the PI and in PD they were, small and round-shaped (0 7,5 ±1,32 um). The distribution and density of hACTHir cells did not show difference related to sex and size of specimens

LESM: a laser-driven sub-MeV electron source delivering ultra-high dose rate on thin biological samples

We present a laser-driven source of electron bunches with average energy 260 keV and picosecond duration, which has been setup for radiobiological tests covering the previously untested sub-MeV energy range. Each bunch combines high charge with short duration and sub-millimeter range into a record instantaneous dose rate, as high as 10(9) Gy s(-1). The source can be operated at 10 Hz and its average dose rate is 35 mGy s(-1). Both the high instantaneous dose rate and high level of relative biological effectiveness, attached to sub-MeV electrons, make this source very attractive for studies of ultrafast radiobiology on thin cell samples. The source reliability, in terms of shot-to-shot stability of features such as mean energy, bunch charge and transverse beam profile, is discussed, along with a dosimetric characterization. Finally, a few preliminary biological tests performed with this source are presented

Indirizzi operativi per la prevenzione e il controllo della legionellosi nelle strutture turistico‐ricettive e ad uso collettivo della Regione Puglia (DGR n.920 del 6.5.2015)

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