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18F-FDG PET/MR Refines Evaluation in Newly Diagnosed Metastatic Urethral Adenocarcinoma
Riccardo Laudicella,Guido Davidzon,Shreyas Vasanawala,Sergio Baldari,Andrei Iagaru 대한핵의학회 2019 핵의학 분자영상 Vol.53 No.4
We described the clinical impact of 18F-FDG PET/MR in refining the evaluation of a 39-year-old female with newly diagnosed metastatic urethral adenocarcinoma.We detailed the diagnostic imaging workup focusing our attention on the CT, MR, and 18FFDG PET/MR different findings. In this case, 18F-FDG PET/MR imaging evaluation resulted not only effective but also altered staging and spared additional invasive procedures in the assessment of a metastatic urethral adenocarcinoma. Combining a highly sensitive PET with the increase tissue resolution of MR (PET/MR) may improve abdominal and pelvic lesion detection outperforming PET/CT for this indication.
Riccardo Ferraresso,Mi-young Jeon 이화여자대학교 통일학연구원 2018 Journal of peace and unification Vol.8 No.2
In the (South) Korean language several terms have been coined to define North Korean refugees, but there seems to be a lack of consensus on the most appropriate label to define this group. This seems to apply also to scholarly communication. Although in recent years South Korean researchers have increasingly contributed to expanding our knowledge of North Korea and North Korean refugees, there is still little knowledge about the usage patterns of labels to define North Korean refugees among scholars. The main purpose of the current study is to identify such patterns in the context of scholarly communication. Specifically, this quantitative analysis will focus on the patterns of the three labels for North Korean refugees that have been more commonly used over the last two decades: “t’albukja” (Escapees from the North), “pukhan it’al chumin” (Residents who left North Korea), and “saet’ŏmin” (New Settlers).
Riccardo Bientinesi,Carlo Gandi,PierFrancesco Bassi 대한배뇨장애요실금학회 2020 International Neurourology Journal Vol.24 No.2
Multiple sclerosis (MS) is a progressive neurological autoimmune disease with a diverse range of urological symptomatology, and most MS patients experience 1 or more moderate to severe urinary symptoms, as well as bladder and/or sexual disorders. Urologists play the director’s role in evaluating and treating these patients. Therefore, identifying the proper evaluation tools and the most suitable therapeutic options for specific patients requires a thorough understanding of this disease process.
Riccardo Donnini,Alberto Fabrizi,Franco Bonollo,Franco Zanardi,Giuliano Angella 대한금속·재료학회 2017 METALS AND MATERIALS International Vol.23 No.5
The aim of this investigation was to determine a procedure based on tensile testing to assess the critical range ofaustempering times for having the best ausferrite produced through austempering. The austempered ductile iron(ADI) 1050 was quenched at different times during austempering and the quenched samples were tested in tension. The dislocation-density-related constitutive equation proposed by Estrin for materials having high density ofgeometrical obstacles to dislocation motion, was used to model the flow curves of the tensile tested samples. Onthe basis of strain hardening theory, the equation parameters were related to the microstructure of the quenchedsamples and were used to assess the ADI microstructure evolution during austempering. The microstructure evolutionwas also analysed through conventional optical microscopy, electron back-scattered diffraction techniqueand transmission electron microscopy. The microstructure observations resulted to be consistent with the assessmentbased on tensile testing, so the dislocation-density-related constitutive equation was found to be a powerfultool to characterise the evolution of the solid state transformations of austempering.
OPTICAL DEVICE FOR MEASURING THE INJECTORS OPENING IN COMMON RAIL SYSTEMS
Riccardo Amirante,Carlo Coratella,Elia Distaso,Gianluca Rossini,Paolo Tamburrano 한국자동차공학회 2017 International journal of automotive technology Vol.18 No.4
Since the needle displacement exerts a fundamental influence on the operation of Common Rail injection systems, accurate measurements of the control piston position can be crucial for a more thorough analysis of the behaviour of injectors, in particular when multiple injections are employed. Eddy current sensors have traditionally been used in lab activities to measure the control piston position inside injectors; apart from the high cost, the scientific literature clearly shows their inadequacy, which is mainly due to the presence of electromagnetic disturbance: the current pulse, which controls the opening of the injector, generates electromagnetic fields which strongly affect the acquisition of data. Many attempts have recently been made either to solve the interference occurring during such measurements or to propose alternative displacement transducers whose operation is not influenced by electromagnetic interference. In this paper, a new device for measuring the injector opening is proposed: it is an optical transducer characterized both by simple and very cheap construction and by a reliable physical principle for measuring the control piston lift. The reliability of the proposed sensor is assessed by a thorough experimental campaign and by comparing the experimental results with the numerical predictions achieved by a Common Rail injector model. Since the assembly of the optical sensor does not affect the injector operation, it can efficiently be used both for experimental tests and for on-board diagnosis and monitoring of the injector operation.
Influence of implant mucosal thickness on early bone loss: a systematic review with meta-analysis
Riccardo Di Gianfilippo,Nicola Alberto Valente,Paolo Toti,Hom-Lay Wang,Antonio Barone 대한치주과학회 2020 Journal of Periodontal & Implant Science Vol.50 No.4
Purpose: Marginal bone loss (MBL) is an important clinical issue in implant therapy. One feature that has been cited as a contributing factor to this bone loss is peri-implant mucosal thickness. Therefore, in this report, we conducted a systematic review of the literature comparing bone remodeling around implants placed in areas with thick (≥2-mm) vs. thin (<2- mm) mucosa. Methods: A PICO question was defined. Manual and electronic searches were performed of the MEDLINE/PubMed and Cochrane Oral Health Group databases. The inclusion criteria were prospective studies that documented soft tissue thickness with direct intraoperative measurements and that included at least 1 year of follow-up. When possible, a meta-analysis was performed for both the overall and subgroup analyses. Results: Thirteen papers fulfilled the inclusion criteria. A meta-analysis of 7 randomized clinical trials was conducted. Significantly less bone loss was found around implants with thick mucosa than around those with thin mucosa (difference, −0.53 mm; P<0.0001). Subgroups were analyzed regarding the apico-coronal positioning, the use of platformmatched vs. platform-switched (PS) connections, and the use of cement-retained vs. screw-retained prostheses. In these analyses, thick mucosa was found to be associated with significantly less MBL than thin mucosa (P<0.0001). Among non-matching (PS) connections and screw-retained prostheses, bone levels were not affected by mucosal thickness. Conclusions: Soft tissue thickness was found to be correlated with MBL except in cases of PS connections used on implants with thin tissues and screw-retained prostheses. Mucosal thickness did not affect implant survival or the occurrence of biological or aesthetic complications.