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- 저자 : Alessandro Rizzi (검색결과 4 건)
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Irritable Bowel Syndrome and Nickel Allergy: What Is the Role of the Low Nickel Diet?
( Angela Rizzi ),( Eleonora Nucera ),( Lucrezia Laterza ),( Eleonora Gaetani ),( Venanzio Valenza ),( Giuseppe M Corbo ),( Riccardo Inchingolo ),( Alessandro Buonomo ),( Domenico Schiavino ),( Antonio 대한소화기기능성질환·운동학회(구 대한소화관운동학회) 2017 Journal of Neurogastroenterology and Motility (JNM Vol.23 No.1
Background/Aims Irritable bowel syndrome (IBS) is characterized by chronic abdominal pain or discomfort accompanied by abnormal bowel movements. In sensitized subjects, ingested nickel (Ni) may induce gastrointestinal symptoms similar to IBS, in addition to typical systemic cutaneous lesions (systemic nickel allergy syndrome [SNAS]). A low nickel diet could improve the systemic manifestations. We evaluated prevalence of nickel allergy in IBS and effects of low Ni diet on (1) gastrointestinal symptoms control, (2) intestinal barrier function, (3) quality of life, and (4) psychological status of patients with IBS and Ni-sensitized patients. Methods Twenty consecutive patients affected by IBS and suspected SNAS underwent intestinal permeability tests. Gastrointestinal symptoms were evaluated using the visual analogue scale before and after 3 months low Ni diet. Subjects with increased intestinal permeability at baseline repeated nuclear examination after the diet. Results The most frequent profile was diarrhea-predominant IBS (8/20). The low Ni diet induced a significant and constant improvement of gastrointestinal symptoms and an equally significant improvement of visual analogue scale. Mean urinary output of <sup>51</sup>Chromium ethylene-diamine-tetra-acetate (<sup>51</sup>Cr-EDTA) was 5.91%/24 hr (± 2.08), significantly different from the control group (2.20%/24 hr ± 0.60, P < 0.0001). Conclusion This pilot study shows that low Ni diet improves gastrointestinal symptoms in patients with IBS and SNAS. (J Neurogastroenterol Motil 2017;23:101-108)
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Salvatori, Pietro,Mincione, Antonio,Rizzi, Lucio,Costantini, Fabrizio,Bianchi, Alessandro,Grecchi, Emma,Garagiola, Umberto,Grecchi, Francesco Korean Association of Maxillofacial Plastic and Re 2017 Maxillofacial Plastic Reconstructive Surgery Vol.39 No.-
Background: Oronasal/antral communication, loss of teeth and/or tooth-supporting bone, and facial contour deformity may occur as a consequence of maxillectomy for cancer. As a result, speaking, chewing, swallowing, and appearance are variably affected. The restoration is focused on rebuilding the oronasal wall, using either flaps (local or free) for primary closure, either prosthetic obturator. Postoperative radiotherapy surely postpones every dental procedure aimed to set fixed devices, often makes it difficult and risky, even unfeasible. Regular prosthesis, tooth-bearing obturator, and endosseous implants (in native and/or transplanted bone) are used in order to complete dental rehabilitation. Zygomatic implantology (ZI) is a valid, usually delayed, multi-staged procedure, either after having primarily closed the oronasal/antral communication or after left it untreated or amended with obturator. The present paper is an early report of a relatively new, one-stage approach for rehabilitation of patients after tumour resection, with palatal repair with loco-regional flaps and zygomatic implant insertion: supposed advantages are concentration of surgical procedures, reduced time of rehabilitation, and lowered patient discomfort. Cases presentation: We report three patients who underwent alveolo-maxillary resection for cancer and had the resulting oroantral communication directly closed with loco-regional flaps. Simultaneous zygomatic implant insertion was added, in view of granting the optimal dental rehabilitation. Conclusions: All surgical procedures were successful in terms of oroantral separation and implant survival. One patient had the fixed dental restoration just after 3 months, and the others had to receive postoperative radiotherapy; thus, rehabilitation timing was longer, as expected. We think this approach could improve the outcome in selected patients.
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Robust Supervisors for Intersection Collision Avoidance in the Presence of Legacy Vehicles
Heejin Ahn,Andrea Rizzi,Alessandro Colombo 제어·로봇·시스템학회 2020 International Journal of Control, Automation, and Vol.18 No.2
Vehicle coordination at road intersections to prevent collisions has recently drawn a lot of research attention, but still remains challenging due to a large volume of traffic composed of autonomous and human-driven vehicles. In this paper, we present the design and validation of a supervisory algorithm for collision avoidance at road intersections, in the simultaneous presence of measurement errors, unmodeled dynamics, and vehicles that are not equipped with autonomous driving features. We design a supervisor that takes control of vehicles that are capable of communication and autonomous actions, only when necessary to avoid a collision, or otherwise leaves control to their drivers. This supervisor is least restrictive, that is, it takes control away from drivers only when necessary to avoid future collisions. Since the complexity of the supervisor algorithm is combinatorial with the number of vehicles, we also design an approximate supervisor that can handle more realistic scenarios with a larger number of vehicles in polynomially bounded time at the expense of an additional, yet quantified, restrictiveness. The least restrictive supervisor is validated through experimental testings using three small-scale vehicles, and the approximate supervisor is validated through computer simulations.
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A Perceptual Method to Assess Color in Interfaces
Cristian Bonanomi,Matteo Paolo Lanaro,Alessandro Rizzi,Barbara Rita Barricelli 한국색채학회 2017 AIC 2017 Jeju Vol.2017 No.10
This paper presents a method, which applies a Spatial Color Algorithm (SCA) on an interface to assess its colors and contrast. SCAs belong to a family of algorithms, which aim to enhance images mimicking some behaviors of the human visual system. These features are obtained through global and local filtering, recalculating the value of each pixel according to the other pixels in the image. The output of the SCA suggests changes in the visual composition of the interface colors and contrast that can reveal flaws in the visibility of the interface components. This method can be used as a support in the interface design phase, providing suggestions for the color palette to use, or changes in lightness and contrast configuration, maximizing the interface visual information readability and pleasantness. These algorithms are almost automatic, requiring only to adjust a few parameters, being therefore easy to be employed by not-expert users. In this paper, we present the method, as well as the results, of a test involving human participants, showing the effectiveness of this approach. Specifically, we are presenting an extension of a recently published work, where new algorithms have been tested on a set of interfaces.
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