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A DIAGONALLY-IMPLICIT TIME INTEGRATION sCHEME FOR sPACE-TIME MOVING FINITE ELEMENTs

Journal of Computational Mathematics 2019年第3期37卷 360-383页

作者： Randolph E.Bank maximilian s.metti Department of Mathematics University of CaliforniaSan DiegoLa JollaCA 92093-0112USA Adtile Technologies 11750 Sorrento Valley RoadSan DiegoCA 92121USA

In this paper,we analyze and provide numerical experiments for a moving finite element method applied to convection-dominated,time-dependent partial differential *** follow a method of lines approach and utilize an underlying tensor-product finite element space that permits the mesh to evolve continuously in time and undergo discontinuous reconfigurations at discrete time *** employ the TR-BDF2 method as the time integrator for piecewise quadratic tensor-product spaces,and provide an almost symmetric error estimate for the *** numerical results validate the efficacy of these moving finite elements.

关键词： TR-BDF2 Moving firdte elements Method of characteristics Convection-dominated Moving mesh methods Error analysis

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Dried plum and bone density

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中华物理医学与康复杂志 2016年第6期38卷 416-416页

作者： Hooshmand s Kern M metti D

BACKGROUND AND OBJECTIVE It is estimated that nearly half of women over the age of 50 years will suffer an osteoporosis related fracture. In addition to medications and lifestyle factors, evidence suggests that some foods may improve bone growth and development, thus reducing diseases such as osteoporosis. Among the foods that have been found to have bone protective effects, dried plum has been shown to prevent and reverse bone loss in rat models of osteoporosis. This study was designed to determine the extent to which dried plum assists in the prevention of bone mineral density (BMD) loss and improves biomarkers in post-menopausal *** This study included 48, osteopenic, postmenopausal women, 65 to 79 years of age, randomly assigned to one of three treatment groups; daily intake of 50 g of dried plum, 100 g of dried plum or a placebo (control group). BMD was evaluated at baseline and at six months using dual energy x-ray absorptiometry. In addition, venous blood samples were obtained for serum bone marker measurements at baseline, and at three and six *** Both the 50 g and the 100 g per day groups experienced no change from baseline in total BMD, while the control group continued to lose bone (Ps no significant difference between the two treatment groups. Laboratory tests revealed that a marker of bone resorption, tartrate-resistant acid phosphatase (TRAP-5b) decreased at three months, with that decrease sustained at six months in both treatment groups (Pspectively). In addition, the bone- specific alkaline phosphatase (BAP)/ TRAP-5b ratio was greater in both treatment groups, with no change in the control *** This study of elderly, postmenopausal women found that the daily consumption of 50 g of dried plum (approximately five prunes) may be effective in preventing bone loss, with no added benefits noted with higher doses.

关键词：骨密度骨质疏松症骨骼生长更年期

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