Search results for "Dual"
showing 10 items of 2547 documents
Bottle microresonator with actively stabilized evanescent coupling
2011
The evanescent coupling of light between a whispering-gallery-mode bottle microresonator and a sub-wavelength-diameter coupling fiber is actively stabilized by means of a Pound-Drever-Hall technique. We demonstrate the stabilization of a critically coupled resonator with a control bandwidth of 0.1 Hz, yielding a residual transmission of (9 \pm 3) \times 10^-3 for more than an hour. Simultaneously, the frequency of the resonator mode is actively stabilized.
Sport and Quality of Life
2022
Negli ultimi trent’anni lo sport ha assunto un significato molto rilevante nella vita delle persone e, seppure con notevoli differenze, sia nei paesi a sviluppo economico avanzato, sia in quelli in via di sviluppo. A livello individuale, esso ha costituito un’area di investimento identitario quando ha assunto la forma di sport spettacolo del quale fruire, alimentando la pratica del tifo e il fandom o costituendo il modello di uno stile di vita vincente; ma anche quando ha assunto la forma di pratica del tempo libero attraverso la quale tenersi in forma, facendo crescere, in questo caso, la diffusione di una cultura della salute e del benessere. Si tratta di due modalità di approcciare al co…
Comparing the Economic Effectiveness of Various Adaptive Schemes for the c Chart
2013
In an attempt to improve the effectiveness of statistical process control (SPC) procedures, a variety of adaptive schemes has been developed in the last decades. However, considering control charts for attributes, relatively few works about adaptive schemes have been proposed, and most of them were proposed only recently. The common characteristic of those schemes is that one or more chart parameters are allowed to adaptively vary during the SPC operations according to the sampling information history, typically the current point plotted on the chart. In this way, the adaptive schemes are smarter than the related static ones, but they are also more complicated in terms of implementation. Th…
An Effective Double Sampling Scheme for thecControl Chart
2013
In the present paper is developed a statistical process control inspection procedure based on a new simple-to-implement and effective double sampling scheme for the c control chart, aimed at the minimization of the number of inspected observation units and warranting fixed levels for the type I and II error risks. In particular, the formulations of the false alarm risk α, the power P of the chart, and the expected number of inspected observation units for the developed inspection procedure are given, whereas a macro of Microsoft Excel is adopted to solve the tackled problem. In order to illustrate the application of the developed approach and to investigate on the influence of several opera…
Caracterización de las aguas residuales y calibración del modelo matemático BNRM1 para la simulación de los procesos de eliminación biológica de mate…
2009
La necesidad de profundizar en el conocimiento del proceso de depuración biológica de las aguas residuales, para la eliminación de materia orgánica y nutrientes, ha conducido a la formulación de modelos matemáticos que permitan reproducir el comportamiento del sistema. En este sentido, el grupo de investigación CALAGUA ha desarrollado el modelo BNRM1, el cual considera no sólo la actividad de las bacterias heterótrofas, autótrofas y acumuladoras de fósforo sino que además tiene en cuenta la actividad de microorganismos fermentativos en el proceso de fangos activados, como las bacterias acidogénicas. En este trabajo se ha propuesto como objetivo principal lograr una adecuada simulación del f…
Ensayos : revista de la Escuela Universitaria de Formación del Profesorado de Albacete
2015
Resumen basado en el de la publicación Título, resumen y palabras clave disponibles en español y en inglés Se presentan los resultados de una investigación sobre un caso de síndrome de Midas, una enfermedad considerada rara. Es un trastorno genético que origina, entre otros trastornos, microftalmia, defectos en la piel, epilepsia persistente y retraso en el desarrollo. Se ha pretendido describir, contextualizar y evaluar un caso mediante una metodología de corte cualitativo, con el objetivo final de realizar un programa de intervención familiar adecuado a las características de la niña que padece este síndrome. Se concluye señalando la escasa literatura científica publicada, la necesidad de…
Dual-Diameter Laterals in Center-Pivot Irrigation System
2022
Design strategies to enhance modern irrigation practices, reduce energy consumption, and improve water use efficiency and crop yields are fundamental for sustainability. Concerning Center-Pivot Irrigation Systems, different design procedures aimed at optimizing water use efficiency have been proposed. Recently, following a gradually decreasing sprinkler spacing along the pivot lateral with constant diameter and sprinkler flow rate, a new design method providing a uniform water application rate has been introduced. However, no suggestions were given to design multiple-diameter laterals characterized by different values of the inside pipe diameter. In this paper, first the previous design pro…
The relationship between feed intake behaviour with intramuscular fat, cholesterol and fatty acid composition in pork
2011
The aim of this study was to investigate the phenotypic relationship between feed intake (FI) characteristics with intramuscular fat, cholesterol and fatty acid composition in pork. Data were available on 202 Duroc barrows. Intramuscular fatness was positively correlated with a higher percentage of saturated (SFA) and monounsaturated fatty acids (MUFA), a lower percentage of polyunsaturated (PUFA), omega-3 (ω3) and omega-6 (ω6) fatty acids, and a lower ω6/ω3 and P:S ratio (p < 0.05). Faster growth resulted in a higher level of SFA and a lower level of ω3 fatty acids (p < 0.05). Increased FI, residual feed intake (RFI) and feed intake time (TIME) and a decreased feed intake frequency (FREQ) …
Pseudo-solid echoes of proton and deuteron NMR in polyethvlene melts
1981
The solid echo technique is applied to determining residual dipolar and quadrupolar couplings in molten polyethylene (PE) and deuterated PE, respectively. The residual coupling defined by the square root of the second moment is about 1% of the corresponding quantity in the solid. It increases with molecular weight, and decreases with rising temperature. A theoretical treatment of time dependent residual couplings yields a decay time that is found experimentally to be about 0.1 ms in molten PE, and independent of molecular weight and temperature within our limits of accuracy. The residual coupling is discussed in relation with chain entanglement in PE. Measurements of the spin-lattice and sp…
Non-steroidal anti-inflammatory agents. Part 23. Synthesis and Pharmacological Activity of Enaminones which inhibit both bovine cyclooxygenase and 5-…
1998
The synthesis and stereochemical characteristics of pyrrolidino-, isoquinolino- and indolo-enaminones 2–11 are reported. The inhibition of cyclooxygenase was determined in a bovine thrombocyte intact cell assay and that of 5-lipoxygenase using intact bovine polymorphonuclear leucocytes. Except compound 2c′ which is a well-balanced dual inhibitor of both enzymes, all other enaminone derivatives are weak inhibitors of both cyclooxygenase and 5-lipoxygenase. Structure-activity relationships of the enaminones in relation to known anti-inflammatory drugs are discussed.