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Theoretical Explanation of Uneven Transverse Temperature Distribution in Wide Thin Strip Rolling Process

Journal of Iron and Steel Research International 2010年第4期17卷 18-23页

作者： TIAN Li-li paolo patrizi ZHANG Jie Fabio Miani University of Science and Technology Beijing Beijing 100083 China University of Udine Udine 33100 Italy

A new theoretical thermomechanical explanation of the uneven transverse temperature distribution, along the width for thin and wide hot rolled strip was proposed. In particular, starting from the irregular pressure and friction distribution which led to an uneven heat generation, a 2D mathematical model of calculating the transverse termperature distribution was presented. A physical explanation for this problem was given and the model was used as an essential basis to build a corresponding FEM simulation model, in which heat loss and generation were considered. Deformation and friction heat were described in details. For a clearer and more logical analysis, the heat generation problem was split into two parts： one for the strip centre, and one for the sides, in correspondence with the temperature peak points at 100 mm from the strip edge. Finally, the result shows that how thenew theoretical model can lead to the exact interpretation of the measured uneven temperature distribution.

关键词： hot strip rolling strip temperature distribution strip thermomechanical behaviour deformation heat friction heat

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Low-volume plus ascorbic acid vs high-volume plus simethicone bowel preparation before colonoscopy

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World Journal of Gastroenterology 2011年第42期17卷 4689-4695页

作者： Stefano Pontone Rita Angelini Monica Standoli Gregorio patrizi Franco Culasso paolo Pontone Adriano Redler Department of Surgical Sciences "Sapienza" University of Rome Department of Medical Statistics "Sapienza"University of Rome

AIM： To investigate the effectiveness of low-volume plus ascorbic acid [polyethylene glycol plus ascorbic acid （PEG ＋ Asc）] and high-volume plus simethicone [polyethylene glycol plus simethicone （PEG ＋ Sim）] bowel preparations. METHODS： A total of one hundred and forty-four outpatients （76 males）, aged from 20 to 84 years （median age 59.5 years）, who attended our Department, were divided into two groups, age and sex matched, and underwent colonoscopy. Two questionnaires, one for patients reporting acceptability and the other for endoscopists evaluating bowel cleansing effectiveness according to validated scales, were completed. Indications, timing of examination and endoscopical findings were recorded. Biopsy forceps were used as a measuring tool in order to determine polyp endoscopic sizeestimation. Difficulty in completing the preparation was rated in a 5-point Likert scale （1 = easy to 5 = unable）. Adverse experiences （fullness, cramps, nausea, vomiting, abdominal pain, headache and insomnia）, number of evacuations and types of activities performed during preparation （walking or resting in bed） were also investigated. RESULTS： Seventy-two patients were selected for each group. The two groups were age and sex matched as well as being comparable in terms of medical history and drug therapies taken. Fourteen patients dropped out from the trial because they did not complete the preparation procedure. Ratings of global bowel cleansing examinations were considered to be adequate in 91% of PEG ＋ Asc and 88% of PEG ＋ Sim patients. Residual Stool Score indicated similar levels of amount and consistency of residual stool; there was a significant difference in the percentage of bowel wall visualization in favour of PEG ＋ Sim patients. In the PEG ＋ Sire group, 12 adenomas≤ 10 mm diameter （5/left colon ＋ 7/right colon） vs 9 （8/left colon ＋ 1/right colon） in the PEG ＋ Asc group were diagnosed. Visualization of small lesions seems to be one of the primary advantages of the PEG

关键词： Bowel preparation Polyethylene glycol Ascorbic acid Colonoscopy Simethicone

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The Effectiveness of Clinical Colloquium Established by the “Drawing Recall” Technique in University Counselling Services for Student Mental Health

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Health 2015年第5期7卷 521-532页

作者： Valeria Biasi paolo Bonaiuto Nazarena patrizi James M. Levin Department of Education “Roma Tre” University Rome Italy Faculty of Medicine and Psychology “Sapienza” University of Rome Rome Italy John Jay College City University of New York New York USA

An experimental assessment of the effectiveness of university counselling was conducted through the “Stress Drawing Recall” Technique applied before and after a clinical colloquium with 70 university students of both genders, aged 18 - 35 years, who had requested this service. Another 70 students waiting to undergo the colloquium were interviewed as a control group. Two parallel series of drawings depicting personal stress situations were collected and, after evaluation by three expert judges in “double-blind” conditions, led to establishing five forms of development of the graphic language from the first to second drawing, defined as follows: a) distension, with a reduction in stress indicators and increase in comfort indicators;b) explicit representation of conflict resolution;c) appearance of new elements, with persisting conflict;d) increase in stress indicators;e) invariant or equivalent repetition of the stress drawing. Results showed that students who underwent the clinical colloquium (experimental group) changed their stress drawings mainly in the direction of distension and conflict resolution, while the control group had more invariant or equivalent repetition of the stress situation (?= 62.77;p < 0.001). The events depicted in the stress drawings were divided into three categories: a) limited short-term stressful situations due to mainly external agents;b) externally induced stressful situations with intense emotional resonance;c) wide-ranging long-lasting stressful situations with great involvement of the self. The participants were divided into: a) very anxious subjects;b) averagely anxious subjects;c) not very anxious subjects, on the basis of their scores on two questionnaires: the MPI (1959) and the STAI (1970). There is a correspondence between the subjects’ level of conflict and extension of the depicted stress. This confirms the usefulness of the Stress Drawing Recall Technique in psychological counselling.

关键词： Assessment Clinical Colloquium Counselling Service Drawing Recall Technique Personality Test

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The Pyramidal Lobe of the Thyroid

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Health 2014年第18期6卷 2535-2540页

作者： Gregorio patrizi Giorgio Di Rocco Domenico Giannotti Maria Giulia Bernieri Felice Sperandeo Rina Orkabi paolo Onori Eugenio Gaudio Adriano Redler Department of Surgical Sciences Faculty of Medicine and Dentistry Sapienza University of Rome Rome Italy Department of Radiology Oncology and Pathology Faculty of Medicine and Dentistry Sapienza University of Rome Rome Italy Department of Anatomical Histological Forensic Medicine and Orthopedic Sciences Faculty of Pharmacy and Medicine Sapienza University of Rome Rome Italy

Anatomy of the thyroid has been extensively studied but the presence of pyramidal lobe varies in percentages from 15% to 75% of cases according to different authors. We therefore investigated systematically this peculiar anatomical aspect. From January 2001 to December 2011, 1002 patients underwent total thyroidectomy in our Division of General Surgery. We analyzed the data collected on the latest 200 thyroidectomies: for all patients pyramidal lobe was measured at removal of the specimen then dimension of the pyramidal lobe after fixation was checked. We found the pyramidal lobe in all cases. In most cases, it was approximately 2 cm (range 1 - 8 cm on fresh specimen). At histology it was described in 72% of cases, after fixation size decreased by a third approximatively. This is the first systematic intraoperative study to verify the prevalence of the thyroid pyramidal lobe. In our experience, the pyramidal lobe is always present and the thyroglossal duct is identifiable.

关键词： Thyroid Pyramidal Lobe Thyroidectomy Surgical Anatomy Thyroid Anatomy Thyroid Surgery Neck Anatomy Neck Surgery

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