323,596 research outputs found
Design and modelling of a controlled saturable inductor for an LCC-S compensated WPT system
No full textThis paper analyses the design of a controlled variable inductor adopted as the series inductance of an LCC-S compensation network in an Inductive Wireless Power Transfer system. In this compensation topology, the power transfer to the load can be controlled by varying the differential inductance of the component through a DC bias. The analytical design process of a double E ferrite core variable inductor is presented, and the specifications for an experimental prototype are proposed. The design output is verified with FEM simulations to validate the obtained differential inductance profile and with circuit simulations to test the non-linear behaviour of the component under the typical current and voltage waveforms of the LCC-S compensated Wireless Power Transfer system. Finally, a prototype is realized, characterized and tested in an experimental Wireless Power Transfer system
Compost and cattle manure as sources of inorganic sulphur to soil
No full textThis laboratory study was conducted to compare the mineralization of sulphur in a soil amended with cattle manure (CM) and green waste compost (GWC). Compared to control, values of SO42--S ranged from -46.8% in soil amended with the high dose of CM to -14.7% in soil treated with the low dose of GWC, indicating an immobilization of sulphur in the differently amended soil.
Soil treated with GWC showed a steady linear release of SO42--S with time over the entire incubation period, with a decrease in mineralization at increasing rate of addition. Cattle manure showed a slow S mineralization over about 8 wk, after which a rapid increase in SO42--S release was observed. The cumulative S values were higher in CM than in GWC-treated soil but, when expressed as percentages of the added S, the release of SO42--S was higher in GWC-treated soil than in CM-treated soil. Kinetic model of net mineralization showed a different release of S between CM and GWC. In soil treated with CM, the Gompertz equation was a suitable model for accomodating the lag phase and the successive increase in S mineralization. An initial increase of arylsulphatase activity up until week 2 was in the soil treated with the two organic materials, especially when applied at the highest rate but, at the end of the 24 wk incubation period, only CM improved soil arylsulphatase with respect to the control. A comparison between the trends of arylsulphatase activity and of SO42--S release indicates that at low S concentrations corresponded a significantly greater level of arylsulphatase and, conversely, high S concentrations induced a decrease of the enzyme
Il volto in tensione : ritrarre il ritrarsi= The face in tension=Portraying the withdrawal
No full textThe contribution – an introduction to Max Cardelli's catalogue of photographs 1996-2016 – addresses the question of the photographic portrait in relationship to portraiture in painting
Arylsulphatase activity during the S mineralization in soils amended with cattle manure and green waste compost
No full textSulphur mineralization of cattle manure (CM) and green waste compost (GWC) added to six agricultural soils with different chemical properties was monitored over 11 wk in a laboratory incubation experiment. The SO42-S released from GWC treated soils were higher than in soils amended with CM and in the controls. The percentages of mineralized S were always higher in GWCtreated soil (1.3%-8.5%) than in CM-treated soil (0.9%-3.8%). In three of the Six soils, particularly for CM, an inimobilization of sulphur was observed. Cattle manure stimulated the arylsulphatase activity at a greater extent than green waste compost. The arylsulphatase activity seems to be controlled by the level of the inorganic S present in soil
Parallelogram Shaped Hysteresis Loops for Describing the Energetic Magnetic Behavior of Hysteretic Media
No full textThe characterization of the energetic magnetic behavior
of hysteretic materials and the determination of the surface
impedances are proposed. A numerical model in time domain is
adopted for the calculations. The use of parallelogram-shaped hysteresis
loops allows for simplifying the numerical formulation and
for reducing the computation time with respect to more accurate
models. Equivalent major loops have been defined starting from
the measured ones. Comparison with the modified scalar Preisach
model is presented and discussed
Biomarkers in emergency medicine
No full textResearchers navigate the ocean of biomarkers searching for proper targets and optimal utilization of them. Emergency medicine builds up the front line to maximize the utility of clinically validated biomarkers and is the cutting edge field to test the applicability of promising biomarkers emerging from thorough translational researches. The role of biomarkers in clinical decision making would be of greater significance for identification, risk stratification, monitoring, and prognostication of the patients in the critical- and acute-care settings. No doubt basic research to explore novel biomarkers in relation to the pathogenesis
is as important as its clinical counterpart. This special issue includes five selected research papers that cover a variety of biomarker- and disease-related topics
Comparing Object Encodings
No full textRecent years have seen the development of several foundational models for statically typed object-oriented programming. But despite their intuitive similarity, differences in the technical machinery used to formulate the various proposals have made them difficult to compare. Using the typed lambda-calculus F ! !: as a common basis, we now offer a detailed comparison of four models: (1) a recursive-record encoding similar to the ones used by Cardelli [Car84], Reddy [Red88, KR94], Cook [Coo89, CHC90], and others; (2) Hofmann, Pierce, and Turner's existential encoding [PT94, HP95]; (3) Bruce's model based on existential and recursive types [Bru94]; and (4) Abadi, Cardelli, and Viswanathan's type-theoretic encoding [ACV96] of a calculus of primitive objects. 1 Introduction Over the last half decade, several authors have proposed foundational models for statically typed object-oriented programming. Although their motivating intuitions and the technical machinery they use are all strongly ..
Improvement of Quality of Life With Supervised Exercise Training in Subjects With Type 2 Diabetes Mellitus
No full text[No abstract available
Diffusive author(s), cohesive author: Analysis of S/N (1994)
No full textThis study indicates the ways in which various aspects of the author(s) are brought forth in Dumb type’s performance art, the S/N production. Previous research has suggested a non-hierarchical organization of Dumb type and the absence of a “privileged author” in Dumb type’s collaborative work, S/N. However, the results that I have investigated from member’s interviews on the creative process of S/N along with my analysis of the recorded images of S/N, indicate a different aspect of the author(s). First, S/N was created through, so to speak, the collective ideas of the members of Dumb type. Further, S/N has at least nine quotations from previous performances, installations, and printed writings, besides the work-in-progress technique. Explicating one of the “author functions” as given by Michel Foucault, each text has plural subjects of the author. However, it has been revealed from members’ interviews that Teiji Furuhashi had a decision-making role in selecting the members’ ideas within the performance. Since then, S/N has had plural subjects of creation; however, Furuhashi is one of the subjects of creation along with the “privileged author.” S/N has plural authors (diffusive authors) yet at the same time, it has a “privileged author,” Teiji Furuhashi (cohesive author)
Sulphur mineralization kinetics of cattle manure and green waste compost in soils
No full textSulphur mineralization of cattle manure (CM) and green waste compost (GWC) added to six agricultural soils with different chemical properties was monitored over 10 weeks in a laboratory incubation experiment. Although the amount of sulphur was higher in CM than in GWC, the cumulative SO42--S values in GWC-treated soils were higher than in soil amended with CM. The percentages of mineralized S were always higher in GWC-treated soil (in the range 1.3-8.5%) than in CM-treated soil (in the range 0.9-3.8%). In three of the six soils, particularly for CM, an immobilization of sulphur was observed. Three kinetic models were evaluated for their suitability to describe the mineralization process. The first-order model best described S mineralization for both amended and control soils. The GWC substantially increased the amount of potentially mineralizable S (S-0) relative to the controls. In GWC-treated soils, the rates of S mineralization (k) were higher than rates in the controls. The k of CM-amended soils was often lower than the k of control soils. Parameters derived from the model were tested as indices for assessing the relationships between S mineralization and soil characteristics. The So was positively correlated to the amount of cumulative SO42--S and also to the content of organic C, N and S in soil
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