Search results for " OS"

Selezione di cloni più resistenti allo stress ossidativo dalla popolazione di cellule staminali mesoangioblasti

2012

Jointure G 2 de deux courbes par une courbe de Bézier rationnelle à points massiques de contrôle

2023

Cet article s'intéresse aux jointures entre deux courbes données par une courbe de Bézier rationnelle quintique à points massiques de contrôle. Pour ce faire, les propriétés différentielles de ces courbes de Bézier fournissent les formules de calcul des courbures en 0 et 1 ainsi que le cercle osculateur idoine. Chaque jointure présente deux degrés de liberté où deux points appartiennent chacun à une droite. Si la jointure G 2 est aussi une jointure C 2 alors la solution est unique. Après le cas d'école d'une jointure entre un cercle et une droite et en guise d'illustration des résultats, deux exemples de jointures entre les boucles d'un Folium de Descartes et d'une Lemniscate de Bernouilli …

Salt extraction regeneration technologies

2022

Abstract A salinity gradient power heat engine is a novel sustainable technology for the conversion of low-grade waste heat (T  This chapter presents an overview of the main regeneration technologies based on the “salt extraction strategy” reported in the literature. A salt extraction regeneration unit takes advantage of the property of specific chemical compounds to shift from a soluble form to separable species in solution allowing the salt transfer between the exhausted solutions and aiding their regeneration. The regeneration processes reported here are classified into (i) switchable solubility salts and (ii) thermolytic salts. The first class includes compounds characterized by thermal…

Composite membranes of aromatic-polyamide for desalination: Membrane preparation and characterization.

1987

A new reverse osmosis composite membrane composed of the following aromatic polymer was estudied. Composite membranes were successfully prepared from PTDS by the conventional phase-inversion method. A typical example of the basic membrane performances is as follows; water flux, 440 1/m2 day and salt rejection, 97.7% determined under the pressure of 40 atm., using 0.1% NaCl solution at 25 °C. The PTDS membrane was characterized by its excellent chemical and thermal resistances, especially against acid, alkali and oxidative atmospheres. These features suggest that the PTDS membrane is a promising candidate for water desalination.

The impact of Pleurotus ostreatus on organic matter transformation processes.

2012

This study showed the effect of Pleurotus ostreatus on the external organic matter (OM) transformation processes. The kinetics of these changes were determined. The experiment was conducted as 42-day pot experiment done in four combinations (with four replications). The four combinations of different substrates were: (1) organic, (2) composted hay, (3) organic soil + composted hay, (4) organic soil + composted hay + lead. The study results showed that P. ostreatus had the ability to transform external OM as well as metal–organic complexes. These transformations were reflected in the constant rate of characterized changes and correlation coefficients. The study also indicated the direction o…

Branched Versus Linear Polyisoprene: Flory-Huggins Interaction Parameters for their Solutions in Cyclohexane

2009

Flory-Huggins interaction parameters were determined as a function of composition for solutions of linear and of branched polyisoprene in cyclohexane (CH) at 25, 45, and 65 °C by means of vapor pressure measurements (moderate to concentrated solutions) and by vapor pressure osmometry (dilute solutions). The results demonstrate that CH is a considerably worse solvent for branched polyisoprene than for the linear analog at all temperatures and at all compositions. This observation corroborates the expectation based on a recent phenomenological approach, which accounts explicitly for the incapability of the segments of an individual polymer molecule to spread out over the entire volume of the …

Concise report on renal sparing surgery in the treatment of renal cell carcinoma. The guide for non- urologists

2019

Przedstawiono aktualne podejście chirurgiczne do leczenia raka nerki. Omówiono zalety chirurgii oszczędzającej nefron, z naciskiem na rosnące wykorzystanie tej techniki w praktyce klinicznej. Porównano także konkretne warianty operacji oszczędzającej nefron, tj. laparoskopowej i robotycznej.

Administrator danych osobowych i przetwarzający dane na zlecenie a chmura obliczeniowa - problemy interpretacyjne

2016

Placental Chorangiocarcinoma a Specific Histological Pattern of Uncertain Incidence and Clinical Impact: Systematic Review of the Literature

2023

Chorangiocarcinoma is a very rare and misdiagnosed placental neoplasm. The unique morphologic features of the lesion distinguish it from other trophoblastic tumors and vascular abnormalities. We present a systematic review of the literature to provide clarity on chorangiocarcinoma entity and biology. A literature search was carried out in December 2022 using the keywords “Placental chorangiocarcinoma”, “Chorangioma”, “Placenta”, and “Throphoblast proliferation”. Articles published from 1988 to 2022 were obtained from Scopus, Google Scholar, and PUBMED. In our review, we examined maternal age, gestational age at the time of delivery, parity, type of pregnancy, placental weight, ultrasound fe…

Optimal “anti-Bayesian” parametric pattern classification using Order Statistics criteria

2012

Published version of a chapter in the book: Progress in Pattern Recognition, Image Analysis, Computer Vision, and Applications. Also available from the publisher at: http://dx.doi.org/10.1007/978-3-642-33275-3_1 The gold standard for a classifier is the condition of optimality attained by the Bayesian classifier. Within a Bayesian paradigm, if we are allowed to compare the testing sample with only a single point in the feature space from each class, the optimal Bayesian strategy would be to achieve this based on the (Mahalanobis) distance from the corresponding means. The reader should observe that, in this context, the mean, in one sense, is the most central point in the respective distrib…