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          • KCI등재SCIESCOPUS

            Classical and Quantum Chaos and Control of Heat Flow

            Giulio,Casati,C.,Mejia-Monasteo 한국물리학회 2007 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.50 No.1I

            We discuss the problem of heat conduction in classical and quantum low-dimensional systems from a microscopic point of view. At the classical level we provide convincing numerical evidence for the validity of the Fourier law of heat conduction in linear mixing systems, i.e., in systems without exponential instability. At the quantum level, where motion is characterized by the lack of exponential dynamical instability, we show that the validity of the Fourier law is in direct relation to the onset of quantum chaos. We then study the phenomenon of thermal recti.cation and brie°y discuss the dierent types of microscopic mechanisms that lead to the recti.cation of heat °ow. The control of heat conduction by nonlinearity opens the possibility to propose new devices, such as a thermal recti.er.

          • KCI등재SCIESCOPUS

            Effects of Grain Refinement on the Microstructure, Mechanical Properties and Reliability of AlSi7Cu3Mg Gravity Die Cast Cylinder Heads

            Giulio,Timelli,Giordano,Camicia,Stefano,Ferraro,Roberto,Molina 대한금속·재료학회 2014 METALS AND MATERIALS International Vol.20 No.4

            The effects of grain refinement on the microstructure and mechanical properties of a secondary AlSi7-Cu3Mg gravity die cast cylinder head are reported. Metallographic and image analysis techniques havebeen used to quantitatively examine the macro- and microstructural changes occurring with the addition ofgrain-refining agent. The results indicate that the AlTi5B1 addition produces a fine and uniform grainstructure throughout the casting; this effect is more pronounced in the slowly solidified regions. The initialcontents of Ti and B, which are present as impurity elements in the supplied secondary alloy ingots,are not sufficient to produce effective grain refinement. Under the present casting conditions, the combinedaddition of AlTi5B1 and Sr does not produce any reciprocal interaction or effect on primary α-Aland eutectic solidification. Grain refinement improves the mechanical properties of the as-cast AlSi7Cu3Mgalloy and produces higher Weibull moduli, thus increasing the reliability of the casting. For automotivestructural components, this could be considered an increase in safety.

          • KCI등재
          • KCI등재

            Vacation experiences begin at home: A cruise line example

            Giulio,Ronzoni 한국마케팅과학회 2016 마케팅과학연구 Vol.26 No.4

            A cruise ship passenger is asked to complete a customer satisfaction survey a few days after returning home from her vacation. The passenger details a nightmarish ordeal concerning her departure day experiences and comments that while her experience on the ship met her expectations, the moments that stand out most in her mind are those of travelling to the ship and reaching her cabin for the first time. While she acknowledges that the cruise line was not directly responsible for most of her misery, she asks that the managers of the cruise line do what they can to mitigate these problems.

          • KCI등재SSCISCOPUS

            Pain in Patients with Dystrophic Epidermolysis Bullosa: Association with Anxiety and Depression

            Giulio,Fortuna,Massimo,Aria,Rodrigo,Cepeda-Valdes,Maria,Guadalupe,Moreno,Trevino,Julio,Cesar,Salas-Alanís 대한신경정신의학회 2017 PSYCHIATRY INVESTIGATION Vol.14 No.6

            '스콜라' 이용 시 소속기관이 구독 중이 아닌 경우, 오후 4시부터 익일 오전 7시까지 원문보기가 가능합니다.

            Objective: We investigate the presence and the quality of pain in patients with dystrophic epidermolysis bullosa (DEB), and its correlation with the level of anxiety and depression. Methods: We collected data from 27 DEB patients and 26 healthy individuals. DEB patients and controls completed 1 scale for the quality of pain, and 1 scale for anxiety and depression. Pain was assessed with the short form of the McGill Pain Questionnaire, whereas anxiety and depression were assessed with the Hamilton rating scale for anxiety and depression. Results: DEB patients and healthy control individuals were homogeneous for age and gender (p>0.05). A statistically significant difference in the two groups was seen for sensory pain rating scale (p<0.001), affective pain rating scale (p=0.029), total pain rating scale (p<0.001), visual analogue scale (p=0.012) and present pain intensity (p=0.001), but not for anxiety (p=0.169) and depression (p=0.530). The characteristics of pain that showed a significant difference between DEB patients and healthy controls were shooting, splitting, tender and throbbing (p<0.05). In DEB patients pain was not correlated with anxiety or depression (p>0.05), whereas a slight correlation between pain and anxiety was found in healthy controls (p<0.05). No difference was found between quality of pain and anxiety-depression in DEB patients (p>0.05), but was between the DEB dominant and the recessive form of DEB (p=0.025). Conclusion: The perception of pain in DEB patients appears greater than in healthy individuals, with splitting and tender characteristics being the most significant ones, but was not associated with anxious and/or depressive symptoms.

          • Effects of ultrasonic instrumentation with different scaler-tip angulations on the shear bond strength and bond failure mode of metallic orthodontic brackets

            Giulio,Alessandri,Bonetti,Serena,Incerti,Parenti,Daniela,Rita,Ippolito,Maria,Rosaria,Gatto,Luigi,Checchi 대한치과교정학회 2014 대한치과교정학회지 Vol.44 No.1

            '스콜라' 이용 시 소속기관이 구독 중이 아닌 경우, 오후 4시부터 익일 오전 7시까지 원문보기가 가능합니다.

            Objective: To evaluate the effects of ultrasonic instrumentation with different scaler-tip angulations on the shear bond strength (SBS) and bond failure mode of metallic orthodontic brackets. Methods: Adhesive pre-coated metallic brackets were bonded to 72 extracted human premolars embedded in autopolymerizing acrylic resin. The teeth were randomly divided into 3 groups (n = 24 each) to undergo no treatment (control group) or ultrasonic instrumentation with a scaler-tip angulation of 45˚ (45˚-angulation group) or 0˚ (0˚-angulation group). SBS was tested in a universal testing machine, and adhesive remnant index (ARI) scores were recorded. The Kruskal-Wallis test and Mann-Whitney U-test were used for statistical analysis. Results: The control group had a significantly higher mean SBS value than the treated groups, which showed no significant differences in their mean SBS values. The ARI scores were not significantly different among the groups. Conclusions: Ultrasonic instrumentation around the bracket base reduces the SBS of metallic orthodontic brackets, emphasizing the need for caution during professional oral hygiene procedures in orthodontic patients. The scaler-tip angulation does not influence the SBS reduction and bond failure mode of such brackets.

          • Interdisciplinary rehabilitation of a root-fractured maxillary central incisor

            Giulio,Alessandri,Bonetti,Serena,Incerti,Parenti,Maurizio,Ciocci,Luigi,Checchi 대한치과교정학회 2014 대한치과교정학회지 Vol.44 No.4

            '스콜라' 이용 시 소속기관이 구독 중이 아닌 경우, 오후 4시부터 익일 오전 7시까지 원문보기가 가능합니다.

            Single-tooth implantation has become a common treatment solution for replacement of a root-fractured maxillary incisor in adults, but the long-term esthetic results can be unfavorable due to progressive marginal bone loss, resulting in gingival recession. In this case report, a maxillary central incisor with a root fracture in its apical one-third was orthodontically extruded and extracted in a 21-year-old female. Implant surgery was performed after a 3-month healing period, and the final crown was placed about 12 months after extraction. After 12 years, favorable osseous and gingival architectures were visible with adequate bone height and thickness at the buccal cortical plate, and no gingival recession was seen around the implant-supported crown. Although modern dentistry has been shifting toward simplified, clinical procedures and shorter treatment times, both general dentists and orthodontists should be aware of the possible long-term esthetic advantages of orthodontic extrusion of hopelessly fractured teeth for highly esthetically demanding areas and should educate and motivate patients regarding the choice of this treatment solution, if necessary.

          • Cephalometric predictors of treatment outcome with mandibular advancement devices in adult patients with obstructive sleep apnea : a systematic review

            Giulio,Alessandri-Bonetti,Daniela,Rita,Ippolito,Maria,Lavinia,Bartolucci,Vincenzo,D'Anto,Serena,Incerti-Parenti 대한치과교정학회 2015 대한치과교정학회지 Vol.45 No.6

            '스콜라' 이용 시 소속기관이 구독 중이 아닌 경우, 오후 4시부터 익일 오전 7시까지 원문보기가 가능합니다.

            Objective: The efficacy of mandibular advancement devices (MADs) in the treatment of obstructive sleep apnea (OSA) ranges between 42% and 65%. However, it is still unclear which predictive factors can be used to select suitable patients for MAD treatment. This study aimed to systematically review the literature on the predictive value of cephalometric analysis for MAD treatment outcomes in adult OSA patients. Methods: The MEDLINE, Google Scholar, Scopus, and Cochrane Library databases were searched through December 2014. Reference lists from the retrieved publications were also examined. English language studies published in international peer-reviewed journals concerning the predictive value of cephalometric analysis for MAD treatment outcome were considered for inclusion. Two review authors independently assessed eligibility, extracted data, and ascertained the quality of the studies. Results: Fifteen eligible studies were identified. Most of the skeletal, dental, and soft tissue cephalometric measurements examined were widely recognized as not prognostic for MAD treatment outcome; however, controversial and limited data were found on the predictive role of certain cephalometric measurements including cranial base angle, mandibular plane angle, hyoid to mandibular plane distance, posterior nasal spine to soft-palate tip distance, anterior nasal spine to epiglottis base distance, and tongue/oral cross sectional area ratio thus justifying additional studies on these parameters. Conclusions: Currently available evidence is inadequate for identification of cephalometric parameters capable of reliably discriminating between poor and good responders to MAD treatment. To guide further research, methodological weaknesses of the currently available studies were highlighted and possible reasons for their discordant results were analyzed.

          • SCOPUSSCIEKCI등재

            Interdisciplinary rehabilitation of a root-fractured maxillary central incisor: A 12-year follow-up case report

            Bonetti,,Giulio,Alessandri,Parenti,,Serena,Incerti,Ciocci,,Maurizio,Checchi,,Luigi The Korean Association Of Orthodontists 2014 대한치과교정학회지 Vol.44 No.4

            Single-tooth implantation has become a common treatment solution for replacement of a root-fractured maxillary incisor in adults, but the long-term esthetic results can be unfavorable due to progressive marginal bone loss, resulting in gingival recession. In this case report, a maxillary central incisor with a root fracture in its apical one-third was orthodontically extruded and extracted in a 21-year-old female. Implant surgery was performed after a 3-month healing period, and the final crown was placed about 12 months after extraction. After 12 years, favorable osseous and gingival architectures were visible with adequate bone height and thickness at the buccal cortical plate, and no gingival recession was seen around the implant-supported crown. Although modern dentistry has been shifting toward simplified, clinical procedures and shorter treatment times, both general dentists and orthodontists should be aware of the possible long-term esthetic advantages of orthodontic extrusion of hopelessly fractured teeth for highly esthetically demanding areas and should educate and motivate patients regarding the choice of this treatment solution, if necessary.

          • SCOPUSSCIEKCI등재

            Effects of ultrasonic instrumentation with different scaler-tip angulations on the shear bond strength and bond failure mode of metallic orthodontic brackets

            Bonetti,,Giulio,Alessandri,Parenti,,Serena,Incerti,Ippolito,,Daniela,Rita,Gatto,,Maria,Rosaria,Checchi,,Luigi The Korean Association Of Orthodontists 2014 대한치과교정학회지 Vol.44 No.1

            Objective: To evaluate the effects of ultrasonic instrumentation with different scaler-tip angulations on the shear bond strength (SBS) and bond failure mode of metallic orthodontic brackets. Methods: Adhesive pre-coated metallic brackets were bonded to 72 extracted human premolars embedded in autopolymerizing acrylic resin. The teeth were randomly divided into 3 groups (n = 24 each) to undergo no treatment (control group) or ultrasonic instrumentation with a scaler-tip angulation of $45^{\circ}$ ($45^{\circ}$-angulation group) or $0^{\circ}$ ($0^{\circ}$-angulation group). SBS was tested in a universal testing machine, and adhesive remnant index (ARI) scores were recorded. The Kruskal-Wallis test and Mann-Whitney U-test were used for statistical analysis. Results: The control group had a significantly higher mean SBS value than the treated groups, which showed no significant differences in their mean SBS values. The ARI scores were not significantly different among the groups. Conclusions: Ultrasonic instrumentation around the bracket base reduces the SBS of metallic orthodontic brackets, emphasizing the need for caution during professional oral hygiene procedures in orthodontic patients. The scaler-tip angulation does not influence the SBS reduction and bond failure mode of such brackets.

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