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| 1 | LevelSet方法求解三维大幅晃动问题的分步有限元法显示文摘取与容器固结的坐标系,将外激励视为质量力,针对刚性容器内流体三维非线性大幅晃动问题,提出了在时间和空间上均具有二阶精度的两步Taylor-Galerk in分步有限元方法。该法首先显式地求解忽略压力梯度项的中间速度场,然后由压力泊松方程求得压力场,再根据求得的压力对速度场进行修正。求解中利用Level-Set方法隐式地追踪自由面,即在每个时间步求解Level-Set函数随水流的输运方程,并通过迭代的方法对其进行重新初始化,以保持为距离的函数,从而达到捕捉自由面的目的。控制方程统一采用简单方便且具有较高精度的两步Taylor-Galerk in格式进行离散,并通过两个算例验证了本文数值方法的正确性和有效性。 | 赵兰浩 李同春 牛志伟 M.Pastor | 2006 | 水动力学研究与进展(A辑)2006,21,4: | 2 |
| 2 | Morphological and histochemical characteristics of the lamina propria in scrotal and abdominal testes from postpubertal boars: correlation with the appearance of the seminiferous epithelium显示文摘 | E.PINART S.BONET M.BRIZ L. M.PASTOR S.SANCHO N.GARCíA E.BADIA J.BASSOLS | 2002 | Journal of Anatomy2002,,: | 1 |
| 3 | Proteomic profiling in an animal model of acute pancreatitis显示文摘 | VanessaFétaud Jean‐LouisFrossard AnnaritaFarina Catherine M.Pastor LéoBühler Jean‐MarcDumonceau AntoineHadengue Denis F.Hochstrasser PierreLescuyer | 2008 | Proteomics2008,,17: | 1 |
| 4 | Hepatopulmonary Syndrome Increases the Postoperative Mortality Rate Following Liver Transplantation: A Prospective Study in 90 Patients显示文摘 | E.Schiffer P.Majno G.Mentha E.Giostra H.Burri C. E.Klopfenstein M.Beaussier P.Morel A.Hadengue C. M.Pastor | 2006 | American Journal of Transplantation2006,,6: | 1 |
| 5 | Sequential injection overmolding of an elastomeric ethylene‐octene copolymer on a polypropylene homopolymer core显示文摘 | L. M.Arzondo N.Pino J. M.Carella J. M.Pastor J. C.Merino J.Póveda C.Alonso | 2004 | Polym Eng Sci2004,,11: | 1 |
| 6 | Role of vascular endothelial growth factor as a critical neurotrophic factor for the survival and physiology of motoneurons显示文摘Vascular endothelial growth factor(VEGF)was discovered by its angiogenic activity.However,during evolution,it appeared earlier as a neurotrophic factor required for the development of the nervous system in invertebrates lacking a circulatory system.We aimed at reviewing recent evidence indicating that VEGF has neuroprotective effects in neurons exposed to a variety of insults.Of particular interest is the link established between VEGF and motoneurons,especially after the design of the VEGFδ/δmutant mice.These mice are characterized by low levels of VEGF and develop muscle weakness and motoneuron degeneration resembling amyotrophic lateral sclerosis.The administration of VEGF through several routes to animal models of amyotrophic lateral sclerosis delays motor impairment and motoneuron degeneration and increases life expectancy.There are new recent advances in the role of VEGF in the physiology of motoneurons.Our experimental aims use the extraocular(abducens)motoneurons lesioned by axotomy as a model for studying VEGF actions.Axotomized abducens motoneurons exhibit severe alterations in their discharge activity and a loss of synaptic boutons.The exogenous administration of VEGF to axotomized abducens motoneurons,either from the transected nerve or intraventricularly,fully restores the synaptic and discharge properties of abducens motoneurons,despite being axotomized.In addition,when an anti-VEGF neutralizing antibody is delivered from the muscle to intact,uninjured abducens motoneurons,these cells display alterations in their discharge pattern and a loss of synaptic boutons that resemble the state of axotomy.All these data indicate that VEGF is an essential neurotrophic factor for motoneurons. | Paula M.Calvo Rosendo G.Hernández Rosa R.de la Cruz Angel M.Pastor | 2023 | Neural Regeneration Research2023,18,8: | 0 |
| 7 | 不排水固结问题的劈裂半显式交互解法显示文摘对不排水固结问题,由于受BabuskaBrezi稳定条件限制,常规的有限元等插值u—p解法将不能给出正确的结果.本文提出的半显式交互解法可避免这一条件的限制,使得位移u、压力p的插值阶数保持一致.一个简单算例验证了本文方法的正确性. | 刘晓青 M.Pastor 夏颂佑 李同春 | 1998 | 河海大学学报(自然科学版)1998,26,1: | 0 |
| 8 | 不可压缩塑性问题稳定化的等插值u-p有限元解法显示文摘对于不可压缩或近似不可压缩问题的求解通常需采用不等插值的混合位移-压力(u-p)单元以满足Babuska-Brezzi稳定条件或Zienkiewicz-Tayfor分片试验要求。本文提出的稳定化的等插值u-p有限元解法使得采用等插值法成为可能。本文绘出了一个简单算例以验证该方法的正确性。另外给出了一个应用算例,用本文方法结合自适应网格剖分采用简单的线性三角形单元求解不排水土坡的极限荷载,其结果与理论解的误差小于5%。 | 刘晓青 李同春 夏颂佑 M.Pastor | 1997 | 水利水运科学研究1997,,4: | 0 |
| 9 | 刚性容器内流体非线性大幅晃动的数值模拟显示文摘取与容器固结的坐标系,将外激励视为质量力,针对刚性容器内流体非线性大幅晃动问题,提出了在时间和空间上均具有二阶精度的两步Taylor-Galerkin分步有限元方法.该方法首先显式地求解忽略压力梯度项的中间速度场,然后通过压力泊松方程求得压力场,最后根据求得的压力对速度场进行修正.求解中利用Level Set方法隐式地追踪自由面,即在每个时间步求解Level-Set函数随水流的输运方程,并通过迭代方法对其重新进行初始化处理,使其保持为距离的函数,从而达到捕捉自由面的目的.控制方程统一采用简便且具有较高精度的两步Taylor-Galerkin格式进行离散.算例验证结果表明,该数值方法是正确和有效的. | 赵兰浩 李同春 牛志伟 M.PASTOR | 2006 | 河海大学学报(自然科学版)2006,34,4: | 0 |
| 10 | 不可压缩塑性局部破坏问题的有效解法显示文摘1前言对于不可压缩或近似不可压缩问题的求解通常采用混合位移-压力(u-p)公式[1,2],但由于离散的控制方程中与压力项对应的系数矩阵的主对角元接近于零,u,p插值函数的选择受到Babuska-Brezzi稳定条件或Zienkiewicz-Taylo... | 刘晓青 夏颂佑 M.Pastor | 1999 | 岩土工程学报1999,21,1: | 0 |
| 11 | Vascular endothelial growth factor:an essential neurotrophic factor for motoneurons?显示文摘Vascular endothelial growth factor(VEGF),an angiogenic factor with neuroprotective effects:The VEGF was initially characterized by its vasculogenic and angiogenic activities and its capacity to promote vascular permeability(Yancopoulos et al.,2000).VEGF is also known as VEGF-A and is the prototype member of a related group of five trophic factors,VEGF-B,VEGF-C,VEGF-D and placental growth factor(Pl GF;Lange et al.,2016).Interestingly,VEGF-B shares a high degree of | Paula M.Calvo Angel M.Pastor Rosa R.de la Cruz | 2018 | Neural Regeneration Research2018,13,7: | 0 |