1,721,021 research outputs found
Servicescape e sanità: un binomio possibile? L'esperienza dell'ospedale pediatrico Meyer di Firenze
No full text
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Monoamine oxidase-enzymes and oxidative stress in the rat optic nerve: Age-related changes.
No full textIn this study, age-related changes in the monoamine oxidases (MAO) were studied
in the optic nerve (ON) of both young and aged male rats. The aim of the study was
to assess the role of MAO in age-related changes in the rat ON and explain the
mechanisms of neuroprotection mediated by MAO-B-specific inhibitors. Fifteen
three month old and fifteen 26 month old Sprague–Dawley rats were used. The animals
were killed by terminal anaesthesia. Staining of MAO, quantitative analysis of
images, biochemical assays and statistical analysis of data were carried out. Samples
of the ON were washed in water, fixed in Bowen fluid, dehydrated and embedded in
Entellan. Histological sections were stained for MAO-enzymatic activities. The specificity
of the reaction was evaluated by incubating control sections in a medium either
without substrate or without dye. The quantitative analysis of images was carried
out at the same magnification and the same lighting using a Zeiss photomicroscope.
The histochemical findings were compared with the biochemical results. After enzymatic
staining, MAO could be demonstrated in the ON fibres of both young and
aged animals; however, MAO were increased in the nerve fibres of the elderly rats.
These morphological findings were confirmed biochemically. The possibility that
age-related changes in MAO levels may be attributed to impaired energy production
mechanisms and/or represent the consequence of reduced energy needs is discussed
The Drosophila minifly (mfl) gene is essential for the formation of intestinal stem cells
No full text
Bitstream Labeling & Audio Watermarking Technologies for Automatic Cue Sheet Generation Systems
No full textPrevalenza e cause della patologia muscoloscheletrica nei lavoratori: evidenze dalla letteratura scientifica italiana
No full text- …
