730 research outputs found
Gioco per l'età libera. L'esperienza del Laboratorio di gioco per anziani di Lusory Warp
No full textIl prodotto descrive l'ideazione del Laboratorio di Gioco per Anziani, dettagliando la metodologia, il progetto con le criticità legate alle problematiche dell'età avanzata e l'esperienza generata, con conclusioni basate sull'osservazione partecipata e i dati qualitativi raccolti
Management of retrorectal hematoma after stapled transanal rectal resection for prolapsed hemorrhoids associated with occult rectal prolapse and obstructed defecation syndrome
No full textA 47-year-old woman with prolapsed hemorrhoids associated with occult rectal prolapse and obstructed defecation syndrome underwent a stapled transanal rectal resection with TST36 high-volume stapler.
The postoperative course was complicated by tenesmus and anal pain with severe anemia. The rectal examination revealed the presence of swelling compatible with hematoma. An abdominal computed tomography scan revealed a huge perirectal hematoma (Figs. 1, 2, 3, 4). The patient was transfused and treated with infusion of intravenous fluids and broad-spectrum antibiotics with resolution of the clinical picture. She was discharged on day 10. At the first outpatient visit, 1 week after discharge, fistulization of the endorectal suture was found with an abscess at the site of the hematoma. The patient underwent daily washing with saline solution until complete abscess reabsorption. At 3- and 6-month follow-up the patient was asymptomatic
Existence of periodic solutions of Hamiltonian systems with potential indefinite in sign.
No full textOn the Euler equation for minimal geodesics on Riemannian manifolds having discontinuous metrics
No full textWe provide a qualitative description of curves minimizing the en-
ergy functional on a Riemannian manifold whose metric is discontinuous along a hypersurface /Sigma.
Such a study is motivated by the variational description of
refraction phenomena
Some results about geodesics on lorentzian manifolds of splitting type
No full textLet us consider a Lorentzian manifold (M,g), that is a smooth, connected, finite-dimensional manifold M endowed with a smooth symmetric second order metric tensor field g, having index 1. For any z in M, it induces on T,M a nondegenerate bilinear form g(z)[., .] having exactly one negative eigenvalue. In order to study the geometry of (M,g) geodesic curves play an important role. We recall that a geodesic is a smooth curve 7: [0, l] + M which satisfies the equation:
v,j-0,
where V,+(s) denotes the covariant derivative of 7(s) with respect to the Levi-Civita connection of the metric tensor g. A closed geodesic is a geodesic 7 such that
r(O) = 7(l) and %O) = ?(I).
It is well known that if 7 is a geodesic, there exists a constant E-, such that E-, = g(7(s))[j(s),j(s)]
for all s E [0, l] . Then 7 is said timelike, lightlike or spacelike respectively when E, is negative, null or positive.
The aim of this paper is to review some recent results concerning some properties of geodesics on a Lorentzian manifold. Particularly we will analyse two questions: the existence of closed geodesics and the geodesical connectedness for some classes of Lorentzian manifolds. We recall (M, g) is said geodesicallyconnectedif every couple of its points can be joined by a geodesic.
The results here reported are obtained by means of global variational methods and relative category theory and they refer to [l], [2], [4], [5], [6], [12], [13], [15].
The paper will be divided into two sections, dealing separately with the previous problems
On-Chip Notch Filter on a Silicon Nitride Ring Resonator for Brillouin Spectroscopy
No full textNoncontact Brillouin spectroscopy is a purely optical and label-free method to retrieve fundamental material viscoelastic properties. Recently, the extension to a three-dimensional imaging modality has paved the way to novel exciting opportunities in the biomedical field, yet the detection of the Brillouin spectrum remains challenging as a consequence of the dominant elastic background light that typically overwhelms the inelastic Brillouin peaks. In this Letter, we demonstrate a fully integrated and ultracompact notch filter based on an optical ring resonator fabricated on a silicon nitride platform. Our on-chip ring resonator filter was measured to have a ∼10 dB extinction ratio and a Q factor of ∼1.9 × 105 at 532 nm central wavelength. The experimental results provide a proof-of-concept on the ability of the on-chip filter to attenuate the elastic background light, heralding future developments of fully integrated, ultracompact, and cost-effective Brillouin spectrometers
Is the exercise practice always associated to health chances? Cross-sectional survey in Italian sport club attenders.
No full textBackground. The scientific literature over the past 30 years highlighted the health benefits of regular physical activity (PA) and guidelines translate those evidences into recommendations for different population groups. However, participating in PA, particularly in sports activities, also carries significant risks: biomechanical, cardiovascular, respiratory, behavioural (performance-enhancing drugs use), psychosocial (body image disorders and exercise addiction), and combinations of risks (female athlete triad). In these perspectives, sport clubs could play a strategic role in the prevention of exercise-associated risks and in a setting-based health promotion.
Our study is aimed at evaluating the prevalence of physical and psychosocial health conditions and health-related behaviours in people attending sport-clubs.
Methods. In 2013 and 2014, a cross-sectional survey has been carried out in six sport clubs, located in Central Italy, collecting data on 212 subjects 18-82 ys of age (49.1% males) by means of a self-report questionnaire including an Italian version of the Exercise Dependence Scale (EDS) [1].
Results. Most athletes are involved in fitness activities (51.0%), followed by gymnastics (13.2%), martial arts (8.5 %), running and body building (6.6%). The proportion of people with overweight in the sample is lower than in general population, while the proportion of underweight is higher, particularly in females (7.6 vs 3.0%).. More than one third of the sample doesn’t have a correct perception of his/her body weight: women distort it significantly more than males towards excess weight (34.3 vs 9.0%) and less towards weight deficiency (3.9 vs 26.0%, p<0.001). Moreover 25.0% of women and 17.3 % of men are unsatisfied with their own body image. The smoking habits are less frequent than in general population (19.8 vs 28.0%), however the proportions of those drinking alcohol at least monthly are similar (53.8 vs 54.5%) [2]. Only 9.0% declare the use of performance-enhancing substances. Five people (2.5%) were ‘at-risk for exercise dependence’ and 21.4% were ‘physiologically dependent’ (i.e. evidence of tolerance or withdrawal), which is less than in other studies [3].
Unsurprisingly, dependent subjects spent more time (3 or more days/week) in exercising (79.5 vs 59.0%, p<0.05) than ‘non-dependents’, but the prevalences of other unhealthy behaviours or body image disorders are similar, so it could be a dependence related to the exercise ‘as an end in itself’ and not a consequence f.e. of eating disorders).
Conclusion. The needs assessment is an essential action in health promoting sports clubs.
References
1. Hausenblas HA & Symons Downs D. Exercise Dependence Scale-21 Manual. 2002.
2. Istituto Superiore di Sanità. Studio Passi. http://www.epicentro.iss.it/passi/ , accessed on June 22, 2014
3. Lejoyeux M, Avril M, Richoux C, Embouazza H, Nivoli F. Prevalence of exercise dependence and other behavioral addictions among clients of a Parisian fitness room Comprehensive Psychiatry. 2008; 49: 353–358
Cloning and gene expression analysis of the phospholipase C in wounded spinach leaves during postharvest storage
No full textMembrane destabilization in plant cells can be caused by mechanical injuries, pathogen attacks, environment
stresses or senescence. Wounds represent vulnerable points that may lead to severe damage and
can compromise organ survival rates. Loss of membrane integrity is often associated with lipid peroxidation
or degradation of phospholipids. This work focuses on the isolation of phospholipase C (PLC) in
spinach leaves and the investigation of its role in membrane destabilization during leaf senescence and
after wounding.
Degenerate primers were used to amplify a 270 bp fragment with RT-PCR and a full length SoPLC
mRNA was isolated using a RACE approach. The mRNA was 2290 bp in length and contained an open
reading frame of 1765 bp. The predicted amino acid sequence showed high similarity with PLC2 and
PLC7 of Arabidopsis. Gene expression analyses showed that SoPLC was down-regulated by wounds and
up-regulated by detached induced senescence.
Membrane integrity was evaluated by lipid peroxidation and HPLC phospholipid analyses. Phospholipase
C (PLC) and D (PLD) enzyme activities were determined in detached leaves incubated in the dark at
4 or 20◦C. Lipid peroxidation and enzymatic activities were mainly affected by senescence and temperature
rather than wounds. Lipid peroxidation did not change at 4 ◦C with TBARS values ranging from 3
to 4 nmol g−1 FW. Leaves incubated at 20 ◦C showed an increase of TBARS from 4 to 12 nmol g−1 FW. PLC
and PLD enzymatic activities in leaves incubated at 20 ◦C significantly increased after seven days with
higher values in wounded leaves (3300 pKatmg−1 prot) compared with control (550 pKatmg−1 prot.)
Lessons from LaGrand: An Argument for the Domestic Enforceability of Treaty-Based Rights Under International Prisoner Transfer Treaties
No full textLouis Antonacci, an attorney for the U.S Army Corps of Engineers, argues that foreign nationals incarcerated in United States state prisons, who are nationals of countries that are parties to the Convention on the Transfer of Sentenced Persons, have a right to be notified of their right to request a transfer. Furthermore, these international prison transfer regimes, of which the Convention on the Transfer of Sentenced Persons is but one, and which the United States is a signatory, should apply with equal force in state prison and proceedings as it does in federal prisons and proceedings. The disparate treatment of foreign nationals determined by state or federal incarceration creates a divided front in foreign policy. The views expressed in this article are those of the author and do not reflect those of the U.S. Army Corps of Engineers
Acute effects induced by verbal instructions in the biomechanics of the drop vertical jump performed from different drop heights
No full text- …
