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Search Results: 1 - 10 of 201070 matches for " P. Poli "
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A nonlinear second order problem with a nonlocal boundary condition
P. Amster,P. De Nápoli
Abstract and Applied Analysis , 2006, DOI: 10.1155/aaa/2006/38532
Abstract: We study a nonlinear problem of pendulum-type for ap-Laplacian with nonlinear periodic-typeboundary conditions. Using an extension of Mawhin's continuationtheorem for nonlinear operators, we prove the existence of asolution under a Landesman-Lazer type condition. Moreover, usingthe method of upper and lower solutions, we generalize acelebrated result by Castro for the classical pendulum equation.
A nonlinear second order problem with a nonlocal boundary condition
P. Amster,P. De Nápoli
Abstract and Applied Analysis , 2006,
Abstract: We study a nonlinear problem of pendulum-type for a p -Laplacian with nonlinear periodic-type boundary conditions. Using an extension of Mawhin's continuation theorem for nonlinear operators, we prove the existence of a solution under a Landesman-Lazer type condition. Moreover, using the method of upper and lower solutions, we generalize a celebrated result by Castro for the classical pendulum equation.
Psycophisical predictors of outcome in pelvic chronic pain therapy
P. Poli,M. Paroli,A. Ciaramella
Pathos : Trimestrale di Algologia , 2012,
Abstract: 32 patients with chronic pelvic pain (CPP) were compared with 24 patients with low back pain (LB) for the entire course of treatment which lasted 1 year, with follow up at 1,6 and 12 months.At baseline, the group of subjects with CPP presented more hypochondriacal traits, major depression and affective inhibition if compared with LB group, but such psychological variables havenot been able to predict the outcome to treatment. No significant difference has been found between LB and CPP subjects regarding the pain threshold of and/or the pain tolerance, when pain was induced by cold stimulation to the hand.High pain tolerance together with the high expectation of analgesia and the conviction of disease appear to be the most important predictors of treatment outcome.
An Emerging Dimension in Psychosomatic Research: The Nocebo Phenomenon in the Management of Chronic Pain
A. Ciaramella,M. Paroli,P. Poli
ISRN Neuroscience , 2013, DOI: 10.1155/2013/574526
Abstract: Introduction. The nocebo effect consists in delivering verbal suggestions of negative outcomes so that the subject expects clinical worsening. Several studies indicate that negative verbal suggestions may result in the amplification of pain. Amplification style is one of the most important dimensions in psychosomatic research. Methods. One group of pain therapy unit patients was evaluated at baseline and again after 6 months from the beginning of the pain treatment. Results. Only 43% of 86 chronic pain patients respond positively to the expectation of sham pain. This group shows at baseline higher pain intensity (t value: 2.72, ) and lower cold pain threshold (t value: 2.18, ) than the group of subjects with any response to sham pain stimulus. Somatoform dimensions influence positively the strength of nocebo response in those predisposed to it. Conclusion. Our study shows that the power of the nocebo phenomenon seems to be a dimension belonging to the investigation in psychosomatic. In contrast to what one might expect, the presence of the nocebo phenomenon affects positively pain relief and the outcome of pain treatment. In a clinical setting, and the meaning of nocebo response does not seem to be different from placebo response. 1. Introduction The nocebo effect consists in delivering verbal suggestions of negative outcomes so that the subject expects clinical worsening [1]. Several studies indicate that negative verbal suggestions may result in the amplification of pain [2, 3] and in the alteration of somatosensory perception [4]. In order to try to disentangle the effects of positive and negative cues on pain processing, several authors used brain imaging [5–7]. Expectation of pain increase has been found to enhance the activation of the thalamus, insula, prefrontal cortex, and anterior cingulate cortex [6], but it is not known how this variation may influence pain processing in clinical pain [8]. Previous studies suggest that nocebo effects, sometimes termed “negative placebo effects,” contribute appreciably to a variety of medical symptoms [9, 10] adverse events in clinical trials and medical care [11–14], and public health “mass psychogenic illness” outbreaks [15]. While the majority of studies on placebo and nocebo effects show consistent results with patient expectations and the main psychological mechanisms, they seem to be the related factors of subconscious conditioning and conscious expectations [8].Kennedy introduced the concept of “nocebo reaction” in 1961, a few years after Beecher published his landmark paper on the placebo effect.
An -system for a revolution surface without boundary
P. Amster,P. De Nápoli,M. C. Mariani
Abstract and Applied Analysis , 2006, DOI: 10.1155/aaa/2006/93163
Abstract: We study the existence of solutions an H-system for a revolution surface without boundary for H depending on the radius f. Under suitable conditions we prove that the existence of asolution is equivalent to the solvability of a scalar equationN(a)=L/2, where N:𝒜⊂ℝ
An H -system for a revolution surface without boundary
P. Amster,P. De Nápoli,M. C. Mariani
Abstract and Applied Analysis , 2006,
Abstract: We study the existence of solutions an H -system for a revolution surface without boundary for H depending on the radius f . Under suitable conditions we prove that the existence of a solution is equivalent to the solvability of a scalar equation N( a )=L/ 2 , where N: + → is a function depending on H . Moreover, using the method of upper and lower solutions we prove existence results for some particular examples. In particular, applying a diagonal argument we prove the existence of unbounded surfaces with prescribed H .
Sorghum utilization for summer grazing: dhurrin problem
A. Pistoia,P. Poli,L. Casarosa,P. Berni
Italian Journal of Animal Science , 2011, DOI: 10.4081/ijas.2003.s1.207
Abstract: Sorghum is an aridity resistant crop and it is suitable for summer grazing. The plant produces cyanide which can poison livestock under certain conditions, involving climate, fertility, stage of growth, and anything that retards plant growth and development, may increase cyanogenetic glycosides in the plants (Wheeler, 2002; Vogel et al., 1987; Osechas et al., 1996; Ramos et al., 1998). In this trial the development of dhurrin content in growing irrigated and dry crop was evaluated........
Note: Scale-free center-of-mass displacement correlations in polymer films without topological constraints and momentum conservation
J. P. Wittmer,N. Schulmann,P. Polińska,J. Baschnagel
Physics , 2011, DOI: 10.1063/1.3662132
Abstract: We present here computational work on the center-of-mass displacements in thin polymer films of finite width without topological constraints and without momentum conservation obtained using a well-known lattice Monte Carlo algorithm with chain lengths ranging up to N=8192. Computing directly the center-of-mass displacement correlation function C_N(t) allows to make manifest the existence of scale-free colored forces acting on a reference chain. As suggested by the scaling arguments put forward in a recent work on three-dimensional melts, we obtain a negative algebraic decay C_N(t) \sim -1/(Nt) for times t << T_N with T_N being the chain relaxation time. This implies a logarithmic correction to the related center-of-mass mean square-displacement h_N(t) as has been checked directly.
Impulsive correction to the elastic moduli obtained using the stress-fluctuation formalism in systems with truncated pair potential
H. Xu,J. P. Wittmer,P. Polińska,J. Baschnagel
Physics , 2012, DOI: 10.1103/PhysRevE.86.046705
Abstract: The truncation of a pair potential at a distance r_cut is well-known to imply in general an impulsive correction to the pressure and other moments of the first derivatives of the potential. That depending on r_cut the truncation may also be of relevance to higher derivatives is shown theoretically for the Born contributions to the elastic moduli obtained using the stress-fluctuation formalism in d dimensions. Focusing on isotropic liquids for which the shear modulus G must vanish by construction, the predicted corrections are tested numerically for binary mixtures and polydisperse Lennard-Jones beads in, respectively, d=3 and d=2 dimensions.
The Impact of Chronic Pelvic Pain in Women  [PDF]
Adriana P. M. S. Rom?o, Ricardo Gorayeb, Gustavo Salata Rom?o, Omero Benedicto Poli-Neto, Antonio Alberto Nogueira
International Journal of Clinical Medicine (IJCM) , 2013, DOI: 10.4236/ijcm.2013.410076
Abstract:

Chronic pelvic pain (CPP) is a prevalent condition with a significant impact on the personal, social, professional and marital life of women. It is a complex condition that may have no specific causal diagnosis or may be associated with multiple diagnoses, frequently involving treatment failure. The definition of health care strategies fundamentally depends on the way women live with this condition. Thus, the objective of the present study is to learn how women with CPP experience their diagnosis and the meaning they attribute to it. A qualitative study was conducted by interviewing a focus group of 11 women. The content of the interviews was recorded and fully transcribed, and the speeches were interpreted by Bardin’s content analysis. The topics most frequently dealt with in the interview were diagnosis, beginning of pain, worsening and improving factors, marital and interpersonal relationships, interference with daily activities, association with emotional aspects, and perspectives for the future. It could be perceived how much these women need to be better heard and how much the association between psychic and physical questions must be visualized by the professionals who provide care for them. The approach used by professionals from different areas, when properly structured, can minimize the problem of the division of a sick person into separate parts. Psychological care is very important, especially in relation to the discovery of more effective strategies for living with pain.

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