191 research outputs found
Symmetry and monotonicity results for positive solutions of p-Laplace systems
We extend to the case of a system involving p-Laplacians, the monotonicity
and symmetry results of Damascelli and Pacella obtained in the case of a scalar
p-Laplace equation with . For this purpose, we use the moving
hyperplanes method and we suppose that the right hand sides are increasing and
locally Lipschitz continuous.Comment: 22 page
A note on the moving hyperplane method
We give more precision on the regularity of the domain that is needed to have
the monotonicity and symmetry results recently proved by Damascelli and
Pacella, result concerning p-Laplace equations. For this purpose, we study the
continuity and semicontinuity of some parameters linked with the moving
hyperplane method.Comment: 4 pages, 2 figure
Potato and tomato peel extract – A natural antioxidant for retarding lipid peroxidation in lamb meat (Awassi) refrigerator storage
This work examined the utilization of potato and tomato peels, as antioxidants natural source for retarding lipid oxidation in slices of lamb meat (Awassi). Meat slices treated with potato peel extract (PPE) and tomato peel extract (TPE) in two different concentrations (0.1%, 0.5%). Then, lipid peroxidation and pH was determined in samples at three different periods with 5 days. We found low levels of peroxide value in samples due to treatment with natural antioxidants. Potato peel extracts were less effective than tomato peel extracts due to lower phenolic content 96.66 mg of Gallic acid /100 g in potato peel extract vs 130.53 mg of Gallic acid /100 g. We suggest using tomato peel extract for retarding lipid peroxidation in chilled storage of lamb meat
The effects of estimating good vs. poor knowledge of results during acquisition of a spatial motor task
Recent studies have shown that providing learners Knowledge of Results (KR) after “good trials” rather than “poor trials” is superior for learning. The present study examined whether requiring participants to estimate their three best or three worst trials in a series of six trial blocks before receiving KR would prove superior to learning compared to not estimating their performance. Participants were required to push and release a slide along a confined pathway using their non-dominant hand to a target distance (133cm). The retention and transfer data suggest those participants who received KR after good trials demonstrated superior learning and performance estimations compared to those receiving KR after poor trials. The results of the present experiment offer an important theoretical extension in our understanding of the role of KR content and performance estimation on motor skill learning
Investigation of Correlation between Entrepreneurial Strategies and Resistance Economics Policy in Copper Company
The purpose of this study was to evaluate the relationship between entrepreneurial strategy and resistance economy policy in Kerman Copper Company. The research is applied and descriptive. The statistical population consisted of 400 experts, supervisors and managers of Shahid Bahonar Copper Company in Kerman. Based on Morgan table, the sample size was 196 people. The standard questionnaire was used for data collection. The validity of the questionnaires was 0.93 and 0.91 respectively and the reliability of the questionnaires was higher than 0.7. Data were analyzed using SPSS software and structural equation modeling test by Amos software. The findings showed that there is a positive and significant relationship between entrepreneurial strategy and resistance economy policy in Kerman Copper Company. On this basis, it can be said that the promotion of entrepreneurial strategies will facilitate the implementation of the Resilience Policy
THE APPLICATION OF FRICTION STIR PROCESSING TO THE FABRICATION OF MAGNESIUM-BASED FOAMS
In the present paper, friction stir processing (FSP) is used to fabricate magnesium-based nanocomposite foams. The effects of the number of FSP passes, TiH2 to Al2O3 weight ratio, and foaming temperature; on the pore distribution and porosity are described. The results indicate that a minimum TiH2 to Al2O3 weight ratio is necessary to provide the best pore distribution and porosity. Closed-cell porous magnesium with a porosity of about 17.5% was successfully fabricated using 4-pass FSP at 800 rpm, by adding 5 mass% TiH2 and 3.5 mass% Al2O3; at a holding temperature of 858 K, and a holding time of 45 min.111Ysciescopu
A note on the implicit function theorem for quasi-linear eigenvalue problems
We consider the quasi-linear eigenvalue problem
subject to Dirichlet boundary conditions on a bounded open set , where
is a locally Lipschitz continuous functions. Imposing no further conditions
on or we show that for small the problem has a bounded
solution which is unique in the class of all small solutions. Moreover, this
curve of solutions depends continuously on .Comment: 7 page
Intrauterine Growth Restriction: Cytokine Profiles of Trophoblast Antigen-Stimulated Maternal Lymphocytes
Intrauterine growth restriction (IUGR) is an important perinatal syndrome that poses several serious short- and long-term effects. We studied cytokine production by maternal peripheral blood lymphocytes stimulated by trophoblast antigens. 36 women with a diagnosis of IUGR and 22 healthy women with normal fetal growth were inducted. Peripheral blood mononuclear cells were stimulated with trophoblast antigens and levels of the proinflammatory cytokines IL-6, IL-8, IL-12, IL-23, IFNγ, and TNFα and the anti-inflammatory cytokines IL-4, IL-10, and IL-13 were measured in culture supernatants by ELISA. IL-8 was produced at higher levels by blood cells of the IUGR group than normal pregnant women, while IL-13 was produced at lower levels. IL-8, IFNγ, and TNFα were higher in IUGR with placental insufficiency than in normal pregnancy. IL-12 levels were higher and IL-10 levels were lower in IUGR with placental insufficiency than in IUGR without placental insufficiency. We suggest that a stronger pro-inflammatory bias exists in IUGR as compared to normal pregnancy and in IUGR with placental insufficiency when compared to IUGR without placental insufficiency. Several ratios of proinflammatory to anti-inflammatory cytokines also support the existence of an inflammatory bias in IUGR
Effect of Welding Speed on Microstructure and Mechanical Properties due to The Deposition of Reinforcements on Friction Stir Welded Dissimilar Aluminium Alloys
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