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This paper reports the study of kaizen as practised in a selection of Japanese companies. After discussing the general understanding of kaizen and proposing a clear definition, the paper describes the methodology of the study, and presents findings from the research, taking Nippon Steel Corporation (NSC) as a base model and comparing this with the data from(More)
34 cases of traumatic rupture of the aortic isthmus have been operated on since 1963: 14 acute ruptures and 20 secondary false aneurysms. Diagnosis was confirmed by aortography. A special feature seen in cases of total transsection is described. Partial extracorporeal bypass was used in 29 cases and direct cross-clamping in 5 cases. Two techniques were(More)
The turns joining segments of secondary structure have been proposed to be key elements in dictating the folded structures of native proteins. An alternative view assumes that turns play a passive role and are merely default structures that occur as a consequence of interactions between antiparallel segments of secondary structure, with chain reversal being(More)
A case of endocardial tuberculoma of the left atrium in a 20-year-old woman is presented. Ulceration of the tuberculoma at the aortic anulus led to disruption of the aortic valvular attachment and induced severe aortic insufficiency. Replacement of the aortic valve and administration of antituberculous medication permitted an uneventful recovery. This is(More)
The authors report three exceptional cases of vascular lesions occurring during arthroscopic meniscectomies involving the posterior horn of the lateral meniscus. These lesions consisted of false aneurysms of the popliteal artery detected early (1 month) or later (5 months and 3 years) after the procedure, one of which formed a fistula with the accompanying(More)
A 21-year-old male patient presented with a typical middle aortic syndrome. Echography disclosed a severe narrowing of the lower thoracic aorta with parietal thickening. The isolated character of the lesion was confirmed by magnetic resonance imaging and aortography. The surgical cure was realized by a Dacron bypass between the upper thoracic descending(More)
Since 1978, 17 patients have undergone surgery for massive pulmonary embolism in our department. Twelve patients survived and have been followed up for between 2 and 31 months postoperatively (mean 16 months). Reassessment of these patients included exercise tolerance test, pulmonary function test, perfusion scan, right heart catheterization and coagulation(More)