Search results for "Spice"
showing 10 items of 54 documents
The use of complementary therapies for chronic pain in Italian hospices.
2013
Scopo: Sebbene ci sia un incremento dell’utilizzo delle Terapie Complemntari (CT) in Europa, ancora è poco noto l’utilizzo di esse negli hospice italiani per il trattamento del dolore cronico. Questa indagine ha lo scopo di descrivere la diffusione delle CT e le loro diverse tipologie impiegate per il trattamento del dolore cronico nel setting assistenziale delle Cure Palliative. Metodi. È stata realizzata una indagine on-line su tutto il campione dei 16 hospices presenti nel territorio della Regione Lazio, utilizzando un questionario adattato e validato per descriverne utilizzo e barriere dell’uso delle CT per il trattamento del dolore cronico oncologico e benigno. Risultati: Il tasso di r…
Hidden oscillations in SPICE simulation of two-phase Costas loop with non-linear VCO
2016
Simulation is widely used for analysis of Costas loop based circuits. However it may be a non-trivial task, because incorrect choice of integration parameters may lead to qualitatively wrong conclusions. In this work the importance of choosing appropriate parameters and simulation model is discussed. It is shown that hidden oscillations may not be found by simulation in SPICE, however it can be predicted by analytical methods. peerReviewed
Numerical approximation of mixed models for digital integrated circuits
1991
To analyse an electrical network many CAD (Computer Aided Design) circuit simulators are available today. The most well-known is probably SPICE -Nagel [1975]. Although this type of simulator is able to precisely compute the transient performances (as delay time), the usage of complete models of devices implies an extremely high time consumption. So, the circuit simulators are unappropriate for the initial stage of VLSI design where a high speed timing analyser (“timing simulator”) is required. To this goal, alternative approaches using either simpler device models or simpler numerical algorithms or easily computable formulae for delay time approximation, have been developed in the past deca…
Elemental composition of seasoning products
2007
The elemental composition of seasoning products, like spices garlic and onion, has been reviewed paying special attention to methods proposed in the literature to determine specific elements or as much as possible components of these products which are widespread used in food preservation or food flavouring and can contribute to the intake of both, essential and toxic elements. Sample treatment and metal speciation aspects have been critically revised concerning onion, garlic and pepper (the most commonly studied products).
Optimum design of two-level MCML gates
2008
In this paper, we address the problem of the optimum design of two-level MOS Current Mode Logic (MCML) gates. In particular, we describe a design methodology based on the concept of crossing-point current already introduced for the optimum design of single-level MCML gates. This methodology is suited both for automated implementation and graphic estimate of the optimum design. Moreover, it clearly shows how some important design parameters affect the optimum values of delay and power consumption. Several gates were designed in an IBM 130 nm CMOS technology. The results of SPICE simulations, reported here, demonstrate the effectiveness of the proposed design methodology.
A circuit model of a 5kW fuel cell
2013
In the last few years, industrial research has been focused on renewable energy sources. Owing to combined heat-power generation option, fuel cells have attracted much interest for a wide variety of research areas. Household appliances are still the most promising applications. Fuel cell modeling is still a critical topic to focus on, affecting each stage of power system design. This paper describes an empirical method to model a proton exchange membrane fuel cell. The modeling approach is applied to a 5kW Nuvera PowerFlow fuel cell. A circuit model is proposed for further applications. PSPICE implementation is described and the parameters tuning procedure is discussed. Simulation and exper…
Modeling Networks of Probabilistic Memristors in SPICE
2021
Efficient simulation of stochastic memristors and their networks requires novel modeling approaches. Utilizing a master equation to find occupation probabilities of network states is a recent major departure from typical memristor modeling [Chaos, solitons fractals 142, 110385 (2021)]. In the present article we show how to implement such master equations in SPICE – a general purpose circuit simulation program. In the case studies we simulate the dynamics of acdriven probabilistic binary and multi-state memristors, and dc-driven networks of probabilistic binary and multi-state memristors. Our SPICE results are in perfect agreement with known analytical solutions. Examples of LTspice code are…
Searching for the antioxidant, anti-inflammatory, and neuroprotective potential of natural food and nutritional supplements for ocular health in the …
2021
Adherence to a healthy diet offers a valuable intervention to compete against the increasing cases of ocular diseases worldwide, such as dry eye disorders, myopia progression, cataracts, glaucoma, diabetic retinopathy, or age macular degeneration. Certain amounts of micronutrients must be daily provided for proper functioning of the visual system, such as vitamins, carotenoids, trace metals and omega-3 fatty acids. Among natural foods, the following have to be considered for boosting eye/vision health: fish, meat, eggs, nuts, legumes, citrus fruits, nuts, leafy green vegetables, orange-colored fruits/vegetables, olives-olive oil, and dairy products. Nutritional supplements have received muc…
Analysis of Spanish nursing students' knowledge in palliative care. An online survey in five colleges.
2020
Abstract Along their professional career, nurses can find patients who require palliative care (PC). It is necessary to have at least a basic education in this area, that should be acquired during their university education. The objective of this descriptive online-survey set in five nursing Colleges was to analyze Spanish nursing students’ knowledge in PC, offering an image of the status of education in PC. 619 students took an online questionnaire with the Spanish version of the Palliative Care Quiz for Nurses (PCQN-SV), which also collected information about their education in the field of PC. Univariate and bivariate analyses were performed, and a predictive binary logistic regression m…
Caregiver Distress in Home Palliative Care
2022
Aim: This study aims to determine the symptom burden of caregivers who were following their loved ones at home and factors associated with this burden. Methods: From a consecutive number of patients followed at home by a specialistic palliative care team, a sample of 46 couples of patients-caregivers was screened. Epidemiological data of both patients and caregivers were collected, also including some variables, such as the level of religiousness, education, economic conditions, and financial distress. The Edmonton Symptom Assessment System (ESAS) was measured in both patients and caregivers. Caregivers were asked to provide a comment in a semi-structured interview, about “what do you thin…