1,436 research outputs found
Methods of constructing superposition measures
The resource theory of quantum superposition is an extension of the quantum
coherent theory, in which linear independence relaxes the requirement of
orthogonality. It can be used to quantify the nonclassical in superposition of
finite number of optical coherent states. Based on convex roof extended, state
transformation and weight, we give three methods of constructing superposition
measures of quantum states, respectively. We also generalize the superposition
resource theory from two perspectives.Comment: 13 page
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Exploring the genetic landscape of complex diseases using the recessive model
High-throughput sequencing technologies have changed the way we identify, study and understand the role of rare variation in Mendelian diseases. Sequencing in complex diseases have proven to be more challenging to interpret, but methods and approaches are being developed to aid in our understanding of variation in these diseases
Semi-solid slurry of AZ91 magnesium alloy prepared by electromagnetic stirring near liquidus temperature
An electromagnetic stirring process near liquidus temperature was designed and demonstrated experimentally to produce semi-solid slurry of AZ91 magnesium alloy, in order to avoid not only contamination from mechanical stirring but also the inflammation of Mg alloy melt at elevated temperature. AZ91 alloy feedstock was isothermally heat treated at 600-610 for 20 min, and then stirred by electromagnetic field. Globular primary particle characteristic was observed optically in the castings. Mechanical properties were also studied
Tryptophan front-face fluorescence and functional properties of whey : A preliminary study
Acord transformatiu CRUE-CSICThis study investigated the potential of front-face fluorescence spectroscopy to predict the functional properties of whey. Whey has a commercial interest due to its excellent nutritional value and versatile functional properties. However, its attributes depend dramatically on heat treatment, which may alter its suitability for different food applications. Tryptophan front-face fluorescence of whey and its functional properties, i.e., foaming, gel-forming, and emulsifying properties, were evaluated after milk heat treatment (at 80 °C with seven holding times) to detect correlations between tryptophan fluorescence and functional parameters and generate predictive models. Whey samples were obtained by isoelectric precipitation of caseins from reconstituted skim milk powder enriched with whey protein isolate. As expected, heat treatments induced an increase in whey protein denaturation, as well as a decrease in total whey protein concentration and tryptophan fluorescence intensity. Gel-forming and emulsifying properties of whey significantly correlated with the maximum intensity of tryptophan (P < 0.001). Concerning foaming properties, only the foam stability index revealed a weak correlation with tryptophan maximum intensity (P < 0.05). Consequently, models presented strong significances (P < 0.001). Specifically, using only tryptophan fluorescence allowed successful prediction of emulsifying properties but was not enough for foaming and gel forming properties
Analysis of an age-structured dengue model with multiple strains and cross immunity
Dengue fever is a typical mosquito-borne infectious disease, and four strains of it are currently found. Clinical medical research has shown that the infected person can provide life-long immunity against the strain after recovering from infection with one strain, but only provide partial and temporary immunity against other strains. On the basis of the complexity of transmission and the diversity of pathogens, in this paper, a multi-strain dengue transmission model with latency age and cross immunity age is proposed. We discuss the well-posedness of this model and give the terms of the basic reproduction number R0 = max{R1, R2} , where Ri is the basic reproduction number of strain i (i = 1, 2). Particularly, we obtain that the model always has a unique diseasefree equilibrium P0 which is locally stable for R0 1, the strain-i dominant equilibrium Pi is locally stable for Rj < R∗ i (i, j = 1, 2, i 6= j). Additionally, the threshold criteria on the uniformly persistence, the existence and global asymptotically stability of coexistence equilibrium are also obtained. Finally, these theoretical results and interesting conclusions are illustrated with some numerical simulations
Technology-Related Research in HRD Publications: An Analysis of Content and Metaperspectives from 2000 to 2006.
This study explores the presence of technology-related research in HRD, identifies what the research addressed, and analyzes how the research was addressed. We reviewed 1,675 papers in five publications. During the seven-year period examined, 169 articles were technology-related. Through a content analysis, we identified the topics of those articles, methodological approaches, organizational settings represented in the research, the fields of the researchers, and the papers\u27 orientation toward research and practice. In comparison to the total articles in each publication, the highest percentage of technology research was published in conference proceedings
Application of front-face fluorescence spectroscopy as a toolfor evaluating the functional properties of whey
TFMMà ster Universitari en Qualitat d'Aliments d'Origen AnimalThis study investigated the feasibility of front-face fluorescence spectroscopy to predict the functional properties of whey. Whey has a commercial interest due to its excellent nutritional value and versatile functional properties, while its attributes depend dramatically on heat treatment, which may alter its suitability for different food applications. Tryptophan front-face fluorescence of the whey and its functional properties, i.e., foaming, gel-forming, and emulsifying properties, were evaluated after milk heat treatment (at 80 °C with holding times of 0, 5, 10, 15, 20, 25 and, 30 min) in order to detect correlations between tryptophan fluorescence and functional parameters and generate predictive models. Whey samples were obtained by isoelectric precipitation of caseins (pH 4.6) from reconstituted skim milk powder enriched with whey protein isolate. As expected, heat provoked a decrease on the undenatured whey proteins of milk, the total concentration of proteins in whey and the intensity of tryptophan fluorescence. Gel-forming and emulsifying properties of whey significantly correlated with the maximum intensity of tryptophan (P < 0.001). Concerning foaming properties, only the foam stability index revealed a weak correlation with tryptophanmaximum intensity parameters(P < 0.05). Merely the predictive models of emulsifying ability possessed a determination coefficient greater than 0.8, albeit most models presented a strong significance (P < 0.001). Thus, although significant correlations were observed, the information provided by tryptophan fluorescence was in general not enough to build strong prediction models
Analysis and Design of Roof Turbine Ventilator for Wind Energy Harvest
Harvesting energy using roof turbine ventilator and
electroactive material has been investigated to verify its
performance. Since electric power gained from a single piece of
regular size is usually small, auxiliary device to vibrate
multiple pieces of electroactive materials in order to harvest
more power is required. In this paper, an attempt of using the
developed nozzle wind collector associated with the popular
roof turbine ventilator employed with gear mechanism to
impact and vibrate a group of electroactive material to
generate electricity is proposed. Number of blade and blade
angle of the roof turbine ventilator are influential to the
effectiveness of wind collection. Also, number of electroactive
material employed on the turbine ventilator under the wind
speed in environment eventually determines the efficiency of
wind harvest. A simple model is derived to estimate the
minimum driving force from the wind power that needs to
overcome the inertia of the turbine ventilator mechanism and
the electromechanical energy conversion of electroactive
materials. Wind drag force is calculated by using CFD is
assumed to provide such driving force. Various combinations
of the blade angle, number of blade and electroactive material
actuators are investigated in simulations. Optimum design
concerning the environment wind resource and configuration
of turbine ventilator is discussed. According to several case
studies, a few of design trends is addressed for better efficiency
of energy harvest. Since multiple electroactive materials are
employed, circuitry design with parallel input sources is
implemented to sum up the current and integrate the power
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