نتایج جستجو برای: we used arch
تعداد نتایج: 5713566 فیلتر نتایج به سال:
due to the limiting workspace of parallel manipulator and regarding to finding the trajectory planning of singularity free at workspace is difficult, so finding a best solution that can develop a technique to determine the singularity-free zones in the workspace of parallel manipulators is highly important. in this thesis a simple and new technique are presented to determine the maximal singula...
OBJECTIVES To comparatively evaluate the extrusive forces and torquing moments on the posterior dentition generated during anterior intrusion with different intrusion techniques in the maxillary and mandibular dental arch. MATERIAL AND METHODS Seven wire specimens were used for each of the following intrusive arches: Utility arch 0.016 x 0.016' Blue Elgiloy, Utility arch 0.017 x 0.025' TMA an...
Using arch-jumping functions and properties of the arch factorization words, we propose a new algorithm for computing subword circular universality index words. We also introduce signature that leads to simple algorithms indexes SLP-compressed
Various surgical techniques have been developed for the repair of an interrupted aortic arch. However, tension and Gothic arch formation at the anastomotic site have remained major problems for these techniques: Excessive tension causes arch stenosis and left main bronchus compression, and Gothic arch configuration is related to cardiovascular complications. To resolve these problems, we adopte...
abstract this study is an attempt to determine the effect of nano- technology education on science lesson for fifth grade in primary school in the city of kermanshah. this research is experimental and is conducted in the from of pre-test and post- test for the control group. an achievement test was administered to determine the rate of learning in the students. the research is an applied one. ...
I read with great interest this article describing a total aortic root and arch replacement in a patient with Loeys–Dietz syndrome (LDS) [1]. There is no doubt that this case was a monumental effort and a tribute to their cardiac surgical programme. There is already a sufficient body of literature validating valvesparing root replacements in children with connective tissue disorders [2–4], so t...
Digital arch arteriography is a technique in which the cervicocerebral vasculature is studied by injecting small amounts of contrast material (20 ml or less of diatrizoate meglumine 60%) into the aortic arch. It was used as the initial phase of arteriography in 100 patients with cerebrovascular disease. Five to ten series were obtained in various projections to evaluate the cerebrovascular syst...
Since 1991 ten patients, 9 male and 1 female, with aortic arch aneurysm underwent surgical therapy with trapdoor thoracotomy. The mean age was 67.4 +/- 9.1 (standard deviation) years at operation. In addition to the aortic arch repair, we also performed seven descending aortic replacements. We performed one partial arch replacement, one total arch replacement, and one aneurysmorrhaphy and wrapp...
BACKGROUND We investigated whether the axillary artery or ascending aorta cannulation combined with the arch first method decreases the risk of stroke during total arch replacement. PATIENTS AND METHODS From January 2002 to January 2006, 35 total arch replacements were performed with the arch first method and central arterial cannulation. The mean age was 66+/-10 years. The cannulation sites ...
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