565 research outputs found
Sull'attuazione delle ordinanze possessorie non seguite dal giudizio di merito
Il contributo, muovendo da una pronuncia giurisprudenziale in forza della quale il procedimento possessorio non ha natura cautelare, in quanto esso è, si, regolato dalle disposizioni sul procedimento cautelare uniforme (669 bis e ss. c.p.c.), ma solo nei limiti della loro compatibilità con il procedimento possessorio, si snoda attraverso l'analisi della giurisprudenza formatasi in questa materia e si conclude con riflessioni personali al riguardo
Effect of melatonin administration prior to calving on milk secretion in the next lactation in dairy cows
This study evaluated the effects of
melatonin administration 60 days prior to
expect calving (drying-off period) on milk yield
during the next lactation. Sixty dairy cows were
treated with subcutaneous melatonin implants
during summer (n=30) or winter (n=30) period.
Another 60 animals were not treated and
served as the control. There were no differences
in the average milk yield between treated and
untreated animals (44.5±3.7 and 44.8±5.0 kg/day
for melatonin and control cows, respectively).
There was an effect of season with a higher
winter milk yield than in summer (43.8±5.0
and 47.1±3.0 kg/day for melatonin and control
groups, respectively). The interaction between
melatonin and season showed no significant
effect; however, during winter, milk yield
tended to be higher (P=0.06) in control cows
than in melatonin treated cows (45.3±3.7 and
49.2±3.0, respectively). This study indicates that
treatment with melatonin prior to calving did
not modify milk yield during the following
lactation. Only a tendency for a reduction
in milk yield during winter was observed in
melatonin treated cows
Titanium dioxide nanostructures chemical sensor
Titanium dioxide (TiO2) nanostructures were grown directly on the
sensitive area of the transducer. A titanium thin film was deposited on
2 . 2 mm(2) alumina substrates by RF magnetron sputtering and
hydrothermal method was used to achieve TiO2. This method is
characterized by the use of different solutions (KOH, NaOH), a not
stirred pressure reactor and a heating system. As-prepared samples
require an acid treatment followed by a calcination step to obtain pure
TiO2 nanostructures. The nanostructured morphology was confirmed by a
scanning electron microscope (SEM) and their structural properties were
investigated by RAMAN spectroscopy. Obtained samples were used as gas
sensors, and their behaviour towards several gaseous species was
analysed in a wide range of working temperatures. Measurements were
carried out in a test chamber, investigating the change in the
electrical conductance due to the surrounding atmosphere
NiO/ZnO nanowire-heterostructures by vapor phase growth for gas sensing
Physical interface between p and n-types semiconducting materials known
as p-n junction or heterojunction represents the key technology in many
electronic and optoelectronic devices such as gas sensors. In this work
we are presenting a novel method for the growth of NiO/ZnO (NWs) based
heterostructures with vapor phase mechanism and their preliminary
sensing study for acetone. To fabricate the NiO/ZnO NWs
heterostructures, firstly NiO nanowires were grown on alumina substrates
with VaporLiquid- Solid (VLS) method and then Vapor-Solid (VS) method
was used for the growth of ZnO nanowires on as grown NiO nanowires. The
surface morphology of NiO nanowires and NiO/ZnO heterostructures were
investigated with scanning electron microscopy (FE-SEM). Raman
spectroscopy has also been used for the structural characterization of
heterostructures. A set of conductromertric sensing devices based on
NiO/ZnO heterostructures have been prepared. The preliminary sensing
performance of NiO/ZnO NWs heterostructure devices towards acetone at
temperature of 400 degrees C is reported in this work. (C) 2016 The
Authors. Published by Elsevier Ltd. This is an open access article under
the CC BY-NC-ND license
Niobium Oxide Nanostructures for Chemical Sensing
AbstractNiobium oxide nanostructures were synthesized by hydrothermal method starting from niobium films deposited by RF magnetron sputtering on 2 × 2 mm2 alumina substrates. The samples were firstly treated with a KOH solution and with HNO3, and then annealed to obtain the Nb2O5 nanostructures. A scanning electron microscope (SEM) was used to investigate the morphology of the samples, while RAMAN spectroscopy was used to analyse their structural properties. In order to study the functional properties of the material, electrical contacts and heating elements were deposited over the substrates by DC magnetron sputtering. The as-prepared samples were mounted on TO packages using gold wires. Afterwards, functional tests were performed in a test chamber to investigate their electrical conductance variation as a function of the surrounding atmosphere and thus the sensitivity to different gaseous species
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