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Increasing the drawing height of conical square cups using anti-lock braking system (ABS)
Muammer Gavas 대한기계학회 2009 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.23 No.11
This paper deals with increasing the drawing height of metal conical square cups with anti-lock braking system (ABS). A novel technique enabling higher drawing height than that achieved in the conventional deep drawing process is introduced, and the principle of the process is explained in this paper. Results of experiments conducted using aluminum alloyed Al-1050 blanks of thickness of 1 mm to draw conical square cups are reported here. Measured drawing load, drawing height and thickness distributions were compared with those obtained from the conventional method. The experimental results showed that higher drawing height of the cup can be achieved by the use of ABS.
Profile of Professionals of the Brazilian Production Sector of Timber Housing
( Victor DE ARAUJO ),( Cesar POLANCO ),( Elen MORALES ),( Juliana CORTEZ-BARBOSA ),( Maristela GAVA ),( Jose GARCIA ) 한국목재공학회 2019 목재공학 Vol.47 No.5
On account of the lack of education of Brazilian worker, this paper analyzed the characteristics of those professionals working in the production sector of timber houses. A sectoral survey was carried out with respective entrepreneurs to investigate the available professionals (career and contract types), evaluate the demands of skilled workers, and indicate solutions to improve the quality of labor qualification. Similarly, over 65% of sampled producers presented both direct-hired and outsourced workforce. For such contract ways, Civil Engineers and Architects were the main careers. Carpenters, Civil Engineers and Architects experienced on timber were the main sectoral demands. Timber Engineers have good potentials of service for this sector. The creation of courses on timber products can emerge as a key alternative to train people.
Stefano Cacciatore,Vincenzo Brandi,Camilla Cocchi,Daniele Elmi,Giordana Gava,Claudia Massaro,Celeste Ambra Murace,Carla Recupero,Matteo Tosato,Riccardo Calvani,Francesco Landi 대한노인병학회 2022 Annals of geriatric medicine and research Vol.26 No.3
Nonconventional clinical presentations of diseases are common in older adults. Even dramatic events, such as foreign body (FB) inhalation, can occur in a subtle and non-specific manner. Pill aspiration is a rare yet overlooked cause of airway injury. It accounts for approximately 7% of all FB aspirations. In contrast, oral dysphagia and polypharmacology, mainly administrated in solid oral dosage forms (SDOF), like tablets and pills, are common conditions in older adults. Herein, we present a case of SDOF aspiration in a 78-year-old man. FB inhalation developed with general clinical deterioration and neurological impairment (delirium) rather than overt respiratory symptoms. Bronchoscopy provided remarkable images of this unexpected finding. Caregivers and healthcare workers must be aware of the risk of SDOF aspiration and adopt proper safety measures. Early recognition and bronchoscopy for diagnostic and therapeutic purposes can be lifesaving in such cases.
Molinaro Stefano,Russo Riccardo,Mistretta Francesco,Risi Gaetano,Gava Umberto Amedeo,Bergui Mauro 대한신경중재치료의학회 2024 Neurointervention Vol.19 No.1
Purpose: Mechanical thrombectomy (MT) is the standard of care for acute ischemic stroke (AIS) due to large vessel occlusion (LVO). The choice of a transradial approach (TRA) for anterior circulation LVOs is still debatable; the use of a specific tricoaxial system could help mitigate numerous issues related to transradial MT.Materials and Methods: From November 2022 to November 2023, 22 patients underwent TRA-MT for anterior circulation LVOs, both as first-line and rescue from transfemoral approach (TFA) failure, with the same triaxial setup consisting of a 7F introducer sheath, 7F guide catheter, and aspiration catheters ranging from 5.5F to 5F in relation to the occlusion site. Choice of thrombectomy technique was at operator discretion. Patients’ demographic data, clinical presentation, treatment details, complications, rate of crossover to TFA, successful revascularization (modified thrombolysis in cerebral infarction [mTICI] score ≥2b), and good clinical outcome at 3 months (modified Rankin scale [mRS] 0-2) were reported.Results: Of 20 patients selected, 10 (50%) had occlusion of M1 segment of middle cerebral artery (MCA), 6 (30%) of internal carotid artery (ICA) terminus, and 4 (20%) with M2 MCA occlusions; 12/20 (60%) were right-sided occlusions and 8/20 (40%) were left-sided. The mean National Institutes of Health Stroke Scale score was 9.25 at admission. Successful revascularization to mTICI 2b-3 was achieved in 18/20 patients (90%). Intracranial complications were reported in 2 (10%) patients. Rate of radial artery occlusion at 24 hours was 10,6%; no access-site haemorrhagic complications were reported. Symptomatic intracranial hemorrhage occurred in 2 (10%) patients. mRS score 0-2 at 3 months was 50%.Conclusion: The high technical effectiveness and good safety profile of this specific tricoaxial setup for TRA-MT in AIS, even for large proximal LVOs, could constitute a viable alternative to TFA-MT in selected cases.