Search results for "liquid"
showing 10 items of 4351 documents
Współczesna metropolia: tożsamość i formy bycia razem jej mieszkańców
2018
The following paper examines the Baumanian “forms of togethernes” in the space of the contemporary metropolis, both in the West (Europe, the USA), and the developing world (China). Zygmunt Bauman understands togetherness as a totality of interhuman actions, occurring in the city space. Paradoxically, the contemporary metropolis which often seems hostile towards traditional bourgeois urban life opens up new possibilities of mutual relations between contemporary citizens. The space in the contemporary city is neither fully artificial, nor natural, but it merges some features of both. Although its infrastructure is governed by effectiveness of molecular capitalism, it is not fully predicable i…
Modeling and experimental approaches for the characterization of phase equilibria in polymer solutions
2012
Calculation of ternary polymer solution phase diagram via compressible lattice fluid model extended to specific interactions
2012
Ternary polymer solutions are currently employed for the production of porous structures (e.g. membranes and scaffolds for tissue engineering) via liquid-liquid phase separation techniques. The relation between processing conditions and thermodynamic features of the considered polymeric system determines the morphology of the as-prepared membrane. Therefore, in order to achieve a better control on a porous structure, a deep characterization of the phase behavior of a polymer solution is needed. The experimental derivation of phase diagrams is highly cost and time consuming, thus usually the cloud point curves of the system are directly measured. In this work, the compressible lattice fluid …
Gas-liquid-solid operation of a Long Draft Tube Self-ingesting Reactor (LDTSR)
2008
Gas-liquid stirred vessels are widely employed to carry out chemical reactions involving a gas reagent and a liquid phase. The usual way for introducing the gas stream into the liquid phase is through suitable distributors placed below the impeller. An interesting alternative is that of using “self ingesting” vessels where the headspace gas phase is injected and dispersed into the vessel through suitable surface vortices. In this work the performance of a Long Draft Tube Self-ingesting Reactor dealing with gas-liquid-solid systems, is investigated. Preliminary experimental results on the effectiveness of this contactor for particle suspension and gas-liquid mass transfer performance in pres…
Mass transfer and hydrodynamic characteristics of a Long Draft Tube Self-ingesting Reactor (LDTSR) for gas-liquid-solid operations
2011
Gas-liquid stirred vessels are widely employed to carry out chemical reactions involving a gas reagent and a liquid phase. The usual way for introducing the gas stream into the liquid phase is through suitable distributors placed below the impeller. An interesting alternative is that of using “self ingesting” vessels where the headspace gas phase is injected and dispersed into the vessel through suitable surface vortices. In this work the performance of a Long Draft Tube Self-ingesting Reactor dealing with gas-liquid-solid systems, is investigated. Preliminary experimental results on the effectiveness of this contactor for particle suspension and gas-liquid mass transfer performance in pres…
La dimension culturelle de la localisation des sites web : quelles compétences professionnelles pour sortir de l’impasse théorique ?
2018
International audience; Paris, 15-16 novembre 2018 La dimension culturelle de la localisation des sites web : quelles compétences professionnelles pour sortir de l'impasse théorique ? Le site web dans les nouveaux écosystèmes de communication multi-et interculturelle
Voltammetric Detection of Lead(II) Using Amide-Cyclam- Functionalized Silica-Modified Carbon Paste Electrodes
2009
2-(4,8,11-Triscarbamoylmethyl-1,4,8,11-tetraazacyclotetradec-1-yl)acetamide (TETAM) derivatives bearing 1, 2, or 4 silylated arms have been synthesized and grafted to the surface of silica gel and ordered mesoporous silica samples. The resulting organic-inorganic hybrids have been incorporated into carbon paste electrodes and applied to the preconcentration electroanalysis of Pb(II). The attractive recognition properties of these cyclam derivatives functionalized with amide pendent groups toward Pb(II) species and the highly porous structure of the adsorbents can be exploited for the selective and sensitive detection of the target analyte. Various parameters affecting the preconcentration a…
Phase equilibria of Pantelleria trachytes (Italy): constraints on pre-eruptive conditions and on the metaluminous to peralkaline transition in silici…
2018
Pantelleria Island is the type locality of pantellerite, an iron and alkali-rich rhyolite (P.I=molar Na2O+K2O/Al2O3 >1.05). Peralkaline rhyolites (i.e pantellerite and comendite) and trachytes usually represent the felsic end-members in continental rift systems (e.g., Pantelleria, Tibesti, Ethiopia, Afar, Kenya, Bain and Range, South Greenland) and in oceanic sland settings (Socorro Is., Easter Is., Iceland and Azores). The origin of peralkaline rhyolites in the different tectonic settings is still a matter of debate and three hypotheses have been suggested: (a) crystal fractionation of alkali-basalt in a shallow reservoir to produce a trachyte which subsequently gives rise to a pantelle…
El uso de órdenes con volumen oculto en el Sistema de Interconexión Bursátil Español
2008
ResumenMuchos mercados dirigidos por órdenes permiten a sus participantes introducir órdenes límite en las que no se revela el tamaño completo de la orden. En este artículo, se describe la utilización de este tipo de órdenes en el mercado español de acciones. Se muestra que una de cada cinco transacciones realizadas en el mercado español implica la detección de volumen oculto. La contribución del volumen oculto al proceso de negociación es más importante entre las acciones menos líquidas, y durante períodos de elevado riesgo de exposición de las órdenes limite. Además, se muestra que los usuarios de este tipo de órdenes se comportan como cazadores de tendencias y siguen un comportamiento im…
Clinical Potential of Circulating Cell-Free DNA (cfDNA) for Longitudinally Monitoring Clinical Outcomes in the First-Line Setting of Non-Small-Cell L…
2022
Background: Despite the increasing implementation of targeted and immunotherapy-based treatments, the prognosis of patients with advanced NSCLC remains dismal. We prospectively evaluated longitudinal plasma cfDNA kinetics as an early marker of therapeutic efficacy in patients with advanced NSCLC undergoing standard first-line treatments. Methods: From February 2020 to May 2022, treatment-naïve patients with advanced NSCLC were consecutively enrolled at the Medical Oncology Unit of the Paolo Giaccone University Hospital, Palermo (Italy). We quantified cfDNA in terms of ng/μL using a QubitTM dsDNA HS Assay Kit. The agreement between the cfDNA and radiologic response was evaluated from…