Search results for "Ady"
showing 10 items of 565 documents
Ability of software SWMM to simulate sewer smooth pressurization transient
2010
As a consequence of heavy rainfall events or network malfunctioning, filling of sewers (pressurization) and network overflowing may occur. Several models are commonly used to simulate floods in drainage networks and their results are usually thought to be reliable and robust. Actually, mathematical models based on the momentum equation appear to be more suitable in correctly simulating the pressurization moving jump but models based on the energy equation are much more popular because of their greater simplicity in comparison to the former ones. In this paper, on the basis of laboratory pipe tests, the ability of software SWMM (Storm Water Management Model, probably the most popular softwar…
Matka Boska z Koźla – ikona czy obraz?
2021
Dekalog zakazuje kultu obrazów. Jednak chrześcijanie zinterpretowali Wcielenie Boga w Jezusie Chrystusie jako zniesienie zakazu tworzenia obrazów. Cztery sobory powszechne wypowiedziały się na temat obrazów w Kościele. Pojęcie obrazu i ikony w pierwszym tysiącleciu chrześcijaństwa było takie samo. Chrześcijanie prawosławni zawęzili znaczenie ikony tylko do obrazu tworzonego na desce za pomocą określonej techniki i estetyki. Matka Boska z Koźla jest jednocześnie obrazem (w znaczeniu szerokim, zachodnim, katolickim), jak i ikoną (w znaczeniu wąskim, wschodnim, prawosławnym). Ikony posługują się językiem symboli i ich celem jest przypominanie o obecności świętej osoby, przedstawionej w obrazie…
Adenocarcinoma colorrectal: factores pronósticos de supervivencia en el tratamiento adyuvante con 5-Fluorouracilo-Levamisol (5FU-Lev)
2004
PROPÓSITO: Valoración de la supervivencia global (SG) y libre de enfermedad (SLE) a 5 años y estudio de los factores pronósticos de los pacientes operados, con finalidad curativa, de adenocarcinoma colorrectal estadios II y III, que recibieron tratamiento adyuvante con 5FU-LEV. MATERIAL Y MÉTODOS: ciento veintiséis pacientes tratados con esquema 5FU-LEV durante 12 meses, entre septiembre de 1990 y noviembre de 1997. RESULTADOS: La SG a los 5 años es de 68.3% y la SLE de 54%. El número de ganglios afectos por el tumor y la afectación vásculo-linfática y perineural, han resultado factores pronósticos significativos tanto en la SLE como en SG a los 5 años. La existencia de obstrucción intestin…
Safety of the first dose of fingolimod for multiple sclerosis: results of an open-label clinical trial
2014
BACKGROUND: In patients with relapsing-remitting MS (RRMS) fingolimod prevents disease relapses and delays disability progression. First dose administration of fingolimod is associated with a transient, dose-dependent decrease in heart rate (HR) in the 6 hours after drug intake.The aim of the study is to to assess safety and tolerability of the first dose of fingolimod in a cohort of Italian patients with RRMS without alternative therapeutic options. METHODS: Open-label, single arm, multicentre study. After the first dose of fingolimod, patients were observed for 6 hours and had their vital signs monitored hourly. Extended on-site monitoring was provided when required. RESULTS: Of the 906 p…
Identification of a Hammerstein model for DC/DC converters operating in CCM
2005
This paper deals with a method for identification of a Hammerstein model of DC-DC converters operating in continuous conduction mode (CCM). This model has the duty cycle and the output voltage as input and output, respectively; it consists of a static nonlinearity and a linear and time-invariant model. The aim of the modeling the system by means of a Hammerstein model is due to its capability of describing the converter in a range of steady-state operating points instead of a desired well defined operating point as occurs for the small-signal models which are the more common mathematical description to approach the study of the converters themselves. The nonlinear characteristic of the Hamm…
Bidirectional laser cavity solitons
2007
Cavity solitons in optical systems have been studied for two decades in a large variety of optical systems. In principle, bidirectional lasers can emit only unidirectionally in steady state, as the two-mode solution (non null steady state in the two possible emission directions) is an unstable solution (winner-takes-all competition prevents the bidirectional cw emission). But for a wide aperture cavity this is not necessarily true as, in different regions of the transverse (with respect to the propagation axis) direction, emission in different propagation directions could occur if the fronts separating these domains are stable. In fact this is exactly what happens when the cavity losses for…
Steady state γ-ray radiation effects on Brillouin fiber sensors
2015
International audience; Brillouin optical time-domain analysis (BOTDA) sensors offer remarkable advantages for the surveillance of the planned French deep geological radioactive wastes repository, called Cigéo1,2. In this work we study the performances of Brillouin distributed sensors in harsh environment. We evaluate the radiation tolerance of different sensor classes and their responses evolution during γ-ray exposition with 1kGy/h dose rate (to reach ~0.2MGy) and after 1, 3, 6 and 10 MGy accumulated doses. Measurements on strained Ge-doped SMF are reported to highlight the variation on Brillouin scattering proprieties, both intrinsic frequency position of Brillouin shift and its dependen…
Determination of a pre-heating sequence for the DONES Target Assembly
2021
Abstract Within the activities promoted by the EUROfusion consortium in support of the design and construction of the DEMO Oriented NEutron Source (DONES), a mock-up of its Target Assembly (TA), based on the configuration with a “bayonet” Back-Plate (BP) and available at ENEA Brasimone labs, is being adopted for the execution of experimental activities aiming at the validation of specific aspects of the target design. Despite the “integral”-TA concept is the current reference, experimental tests concerning the TA pre-heating phase are not significantly affected by the TA concept and are still representative even though conducted on the bayonet-TA concept. Indeed, the main objective of the p…
Study of voltage decrease in organic light emitting diodes during the initial stage of lifetime
2016
Abstract We report the results of lifetime DC testing at constant current of not-encapsulated organic light emitting diodes (OLEDs) based on Tris (8 idroxyquinoline) aluminum (Alq3) as emitting material. In particular, a voltage decrease during the initial stage of the lifetime test is observed. The cause of this behavior is also discussed, mainly linked to initial Joule self-heating of the device, rising its temperature above room temperature until thermal equilibrium is reached at steady state.
Storm sewer pressurization transient – an experimental investigation
2014
Pipe pressurization is examined experimentally by 144 laboratory experiments in a circular tilting pipe between two tanks, in which the transient was triggered by sudden closing of the downstream tank outlet. The experiments cover ranges of values of slope, velocity and filling ratio of the open-channel flow not explored in previous studies. Situations involving considerable air quantity and consequent intense pressure oscillations were also reproduced. Two different pressurization patterns, defined as “smooth” and “abrupt”, were observed, but only the abrupt pattern produced intense pressure oscillations. The comparison among all the abrupt pressurization surges showed how the oscillations…