نتایج جستجو برای: magnetically retrievable
تعداد نتایج: 8547 فیلتر نتایج به سال:
Information retrieval systems today scan large data spaces in response to the user's information need, returning lists of retrievables ordered by relevance 11]. In the general case, the tendency is to return as many relevant items as the system can locate. However, in situations where the retrievables are highly similar to one another, one just may be enough. In this extended abstract, we descr...
PURPOSE A significant proportion of patients undergoing surgery have an increased incidence of acute pulmonary embolus (PE). We analyzed all patients who had a retrievable inferior vena cava (IVC) filter placed preoperatively for PE prophylaxis and investigated the long-term outcomes of the patients who did not have their filter removed. METHODS Patients who underwent retrievable IVC filter i...
IMPORTANCE Retrievable inferior vena cava (IVC) filters were designed to provide temporary protection from pulmonary embolism, sparing patients from long-term complications of permanent filters. However, many retrievable IVC filters are left in place indefinitely. OBJECTIVES To review the medical records of patients with IVC filters to determine patient demographics and date of and indication...
The orientation of steel fibers in magnetically driven concrete and magnetically driven mortar was experimentally studied in this paper using a magnetic method. In the magnetically driven concrete, a steel slag was used to replace the coarse aggregate. In the magnetically driven mortar, steel slag and iron sand were used to replace the fine aggregate. A device was established to provide the mag...
In this paper we propose a modification to Genetic Algorithm which we call as Retrievable Genetic Algorithm (Ret-GA) and use it to solve a given Sudoku puzzle. Although a number of approaches exist for solving a given Sudoku puzzle, very few papers with heuristic approaches are available for obtaining its solution. In this work, the fitness function is modeled in a new way considering puzzle-ch...
OBJECTIVE We aimed to evaluate the efficacy and safety of a newly developed, partially retrievable flow-diverter (the FloWise) in an elastase-induced rabbit aneurysm model. MATERIALS AND METHODS We developed a partially retrievable flow diverter composed of 48 strands of Nitinol and platinum wire. The FloWise is compatible with any microcatheter of 0.027-inch inner diameter, and is retrievabl...
In this paper, we study the stability of phase retrieval problems via a family locally stable frame measurements in Banach spaces, which call “locally and conditionally connected” (LSCC) measurement schemes. For any signal f space, associate it with weighted graph Gf, defined by LSCC scheme, show that retrievability is determined connectivity Gf. We quantify two common measures connectivity: Th...
IMPORTANCE Although retrievable inferior vena cava filters are frequently used in addition to anticoagulation in patients with acute venous thromboembolism, their benefit-risk ratio is unclear. OBJECTIVE To evaluate the efficacy and safety of retrievable vena cava filters plus anticoagulation vs anticoagulation alone for preventing pulmonary embolism recurrence in patients presenting with acu...
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