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71.
Solar circuits are nearly always transitory in evolution. It is therefore necessary to control them dynamically. In this paper some solar plant configurations, which use flexible and economic microcomtrollers for both energy cycle and parabolic collector management, are examined. The paper points out some possible solutions based on priority for low energy costs. Principal advantages of using such microcontrollers are high operation continuity, reliability and user-oriented management. 相似文献
72.
Orazio Muscato Vincenza Di Stefano Wolfgang Wagner 《Computers & Mathematics with Applications》2013,65(3):520-527
This paper is concerned with electron transport and heat generation in semiconductor devices. An improved version of the electrothermal Monte Carlo method is presented. This modification has better approximation properties due to reduced statistical fluctuations. The corresponding transport equations are provided and results of numerical experiments are presented. 相似文献
73.
Moro L Cazzani C Tomarchio O Morone G Catona A Fantinato D 《Radiation protection dosimetry》2007,123(1):113-117
A patient dose survey was carried out measuring the kerma-area product (KAP) values during radiological evaluation in the follow-up of bariatric surgery. The procedures were performed by three radiologists to adjust laparoscopic gastric bands and to detect postoperative complications after Roux-en-Y gastric bypass procedures to treat morbid obesity. Total fluoroscopy time, exposure factors and the overall contribution of fluoroscopy to the accumulated KAP value were recorded. The median KAP values were used to estimate organ doses and effective dose to a standard patient; the radiation risk associated with the procedures was also evaluated. The doses were smaller for one of the three radiologists, owing to a more appropriate beam collimation and a reduction of the screening time. The KAP values ranged from 1.6 to 7.1 Gy cm(2) for the laparoscopic adjustable gastric banding management, and from 3.0 and 8.3 Gy cm(2) for the radiological examinations after gastric bypass. As a whole, the effective doses associated to these procedures were between 0.5 and 2.7 mSv. The organs receiving the highest doses were not only breast, stomach, pancreas and liver, but also lungs, owing to of their high radiosensitivity, significantly contributed to the effective dose. 相似文献
74.
Graziano Riccioni Luca Scotti Nicolantonio D’Orazio Sabina Gallina Giuseppe Speziale Lorenza Speranza Tonino Bucciarelli 《International journal of molecular sciences》2014,15(4):6391-6398
Asymmetric dimethylarginine (ADMA) is an endogenous nitric oxide synthase (NOS) inhibitor known as a mediator of endothelial dysfunction and atherosclerosis. Circulating ADMA levels are correlated with cardiovascular risk factors such as hypercholesterolemia, arterial hypertension, diabetes mellitus, hyperhomocysteinemia, age and smoking. We assessed the relationship between ADMA values and site-specific association of asymptomatic carotid atherosclerosis (intima-media thickness (CIMT) and plaque) in elderly subjects. One hundred and eighty subjects underwent a complete history and physical examination, determination of serum chemistries and ADMA levels, and carotid ultrasound investigation (CUI). All subjects had no acute or chronic symptoms of carotid atherosclerosis. Statistical analyses showed that high plasma levels of ADMA/SDMA were positively correlated to carotid atherosclerosis (CIMT and plaque) (p < 0.001), with significant site-specific association. Total cholesterol, low density lipoprotein cholesterol, triglycerides and C-reactive protein plasma concentrations were significantly associated with asymptomatic carotid atherosclerosis (p < 0.001). High serum concentrations of ADMA and SDMA were associated with carotid atherosclerotic lesions as measured by CIMT ad plaque and may represent a new marker of asymptomatic carotid atherosclerosis in elderly subjects. 相似文献
75.
Fulvio Ciriaco Nicola Gambacorta Daniela Trisciuzzi Orazio Nicolotti 《International journal of molecular sciences》2022,23(9)
PLATO (Polypharmacology pLATform predictiOn) is an easy-to-use drug discovery web platform, which has been designed with a two-fold objective: to fish putative protein drug targets and to compute bioactivity values of small molecules. Predictions are based on the similarity principle, through a reverse ligand-based screening, based on a collection of 632,119 compounds known to be experimentally active on 6004 protein targets. An efficient backend implementation allows to speed-up the process that returns results for query in less than 20 s. The graphical user interface is intuitive to give practitioners easy input and transparent output, which is available as a standard report in portable document format. PLATO has been validated on thousands of external data, with performances better than those of other parallel approaches. PLATO is available free of charge (http://plato.uniba.it/ accessed on 13 April 2022). 相似文献
76.
Bosurgi Gaetano Marra Stellario Pellegrino Orazio Sollazzo Giuseppe 《Cognition, Technology & Work》2023,25(2-3):233-249
Cognition, Technology & Work - When a road design solution is quite out of standards for the presence of insurmountable constraints, there is the need for an objective procedure aimed at... 相似文献
77.
Mariagrazia Di Luca Ensieh Poursani Manuela Curcio Giuseppe Cirillo Antonietta Salerno Sara Bolognini Giovanni De Filpo Sara Filippi Orazio Vittorio Francesca Iemma Fiore Pasquale Nicoletta 《大分子材料与工程》2023,308(11):2300166
With the objective of creating an electro-responsive and antimicrobial device suitable as delivery system for Rose Bengal (RB) to the skin, a hybrid hydrogel combining Chitosan (CS) and Graphene Oxide (GO) are designed, serving as functional polymer support and active filling element, respectively. The hybrid system, synthesized using tripolyphosphate as a crosslinker via ionic gelation, shows a uniform and homogeneous surface, as verified by SEM investigations, high biocompatibility when tested on human fibroblast lung cells MRC-5 cells, and biodegradability in phosphate buffered medium at physiological pH. Drug loading and release experiments, extensively analyzed using suitable mathematical modeling, shows the enhancement of the binding efficiency conferred by GO (534 and 979 mg g−1 for blank and hybrid hydrogels, respectively) and an electro-responsive behavior (maximum BR release of 36 and 23% at 0 and 12 V, respectively). Additionally, hybrid hydrogel is found to prevent the adhesion of methicillin-resistant Staphylococcus aureus and to kill the bacterial cells by taking advantage of the sustained release of the antimicrobial RB. 相似文献
78.
79.
Ezio Santagata Orazio Baglieri Fabrizio Miglietta Lucia Tsantilis Pier Paolo Riviera 《Fatigue & Fracture of Engineering Materials & Structures》2019,42(12):2738-2746
The study presented in this paper aimed at evaluating the impact of different nanosized additives, including an organophilic nanoclay and multiwall carbon nanotubes, on the fatigue properties of dense‐graded asphalt mixtures. Cyclic direct tension fatigue tests were carried out, and the corresponding results were interpreted by means of a simplified version of the visco‐elastic continuum damage model. The experimental investigation also included linear viscoelastic characterization of the considered materials. Results derived from tests carried out on the mixtures containing nanosized additives were compared with those obtained for a reference standard mixture. It was found that the use of the abovementioned additives can give a substantial contribution to the enhancement of the fatigue damage resistance of asphalt mixtures. Moreover, when comparing the two types of additives, it was observed that organophilic nanoclays can outperform multiwall carbon nanotubes. 相似文献
80.
Orazio Attanasi Simonetta Gasperoni Claudio Carletti 《Advanced Synthesis \u0026amp; Catalysis》1980,322(6):1063-1066