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ON THE EXISTENCE OF SOLUTIONS TO A BI-PLANAR MONGE-AMPèRE EQUATION

Acta Mathematica Scientia 2020年第2期40卷 379-388页

作者： Ibrokhimbek AKRAMOV marcel oliver Institut für Angewandte Analysis Universitat Ulm89069 UlmGermany School of Engineering and Science Jacobs University28759 BremenGermany

In this article,we consider a fully nonlinear partial differential equation which can be expressed as a sum of two Monge-Ampere operators acting in different two-dimensional coordinate *** equation is elliptic,for example,in the class of convex *** show that the notion of Monge-Ampere measures and Aleksandrov generalized solutions extends to this equation,subject to a weaker notion of convexity which we call bi-planar *** the equation is also elliptic in the class of bi-planar convex functions,the contrary is not necessarily *** is a substantial difference compared to the classical Monge-Ampere equation where ellipticity and convexity *** provide explicit counter-examples:classical solutions to the bi-planar equation that satisfy the ellipticity condition but are not generalized solutions in the sense *** conclude that the concept of generalized solutions based on convexity arguments is not a natural setting for the bi-planar equation.

关键词： Fully nonlinear elliptic equations generalized solution bi-planar convexity

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Impact of transplant nephrectomy on peak PRA levels and outcome after kidney re-transplantation

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World Journal of Transplantation 2014年第2期4卷 141-147页

作者： Dietlind Tittelbach-Helmrich Przemyslaw Pisarski Gerd Offermann marcel Geyer oliver Thomusch Ulrich Theodor Hopt oliver Drognitz Department of General Surgery University of Freiburg79106 Freiburg i. Brsg.Germany Department of General Surgery University of Luebeck23538 LuebeckGermany Transplant Center Medical Department IVCampus Benjamin FranklinUniversity Charité of Berlin12200 BerlinGermany Department of Nephrology University of Freiburg79106 Freiburg i. Brsg.Germany

AIM: To determine the impact of transplant nephrectomy on peak panel reactive antibody(PRA) levels, patient and graft survival in kidney re-transplants. METHODS: From 1969 to 2006, a total of 609 kidney re-transplantations were performed at the University of Freiburg and the Campus Benjamin Franklin of the University of Berlin. Patients with PRA levels above(5%) before first kidney transplantation were excluded from further analysis(n = 304). Patients with graft nephrectomy(n = 245, NE+) were retrospectively compared to 60 kidney re-transplants without prior graft nephrectomy(NE-).RESULTS: Peak PRA levels between the first and the second transplantation were higher in patients undergoing graft nephrectomy(P = 0.098), whereas the last PRA levels before the second kidney transplantation did not differ between the groups. Age adjusted survival for the second kidney graft, censored for death with functioning graft, were comparable in both groups. Waiting time between first and second transplantation did not influence the graft survival significantly in the group that underwent nephrectomy. In contrast, patients without nephrectomy experienced better graft survival rates when re-transplantation was performed within one year after graft loss(P = 0.033). Age adjusted patient survival rates at 1 and 5 years were 94.1% and 86.3% vs 83.1% and 75.4% group NE+ and NE-, respectively(P < 0.01). CONCLUSION: Transplant nephrectomy leads to a temporary increase in PRA levels that normalize before kidney re-transplantation. In patients without nephrectomy of a non-viable kidney graft timing of re-transplantation significantly influences graft survival after a second transplantation. Most importantly, transplant nephrectomy is associated with a significantly longer patient survival.

关键词： Kidney re-transplantation Graft nephrectomy Panel reactive antibodies,Patient and graft survival

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拍卖行化身多元艺术空间——嘉德艺术中心

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设计家 2018年第1期 102-106页

作者： marcel Holmberg Sun Ke Emily Liang Cecilia Lei Yingda Ahrens Mark Biemans Kim Bjarke Catarina Canas Alicia Casals Michael Cavander Jeffrey Cheng Patrick Conway Dyno Du Nicolaz Frez Brian Fung Daniel Hawkins Xinran Ji Philipp Kramer Emeline Laurencon Yuyang Lin Mavis Liu Wymen Lo Max Ma Rafael Merino John Murphey Marcin Olszowski Kevin Ou Kevin Park Yanyadech Phornphong Aaron Powers Klementina Savickaite Jim Shi Chiara Storino Joseph Tang Yang Tao Elena Yang Quentin Yiu Francis Young Lei Yu Danny Zhang Bruno Zhao Weiwei Zhang Yi Zhu Catarina Canas Brian Fung Paloma Hernaiz marcel Holmberg Tait Kaplan Jaime oliver Joseph Tang Beijing Institute of Architectural Design (BIAD) Beijing Buro Ole Scheeren MQ-Studio Shanghai(Hotel)

嘉德艺术中心紧邻紫禁城,作为一座全新的综合文化机构,将北京的古城韵味与现代大都会的蓬勃生机以及多元艺术融为一体.嘉德艺术中心是世界上第一个量身定制的拍卖行总部,在北京的中心创建了一个全新的多元艺术机构类型.建筑提供博物馆... 详细信息

嘉德艺术中心紧邻紫禁城,作为一座全新的综合文化机构,将北京的古城韵味与现代大都会的蓬勃生机以及多元艺术融为一体.嘉德艺术中心是世界上第一个量身定制的拍卖行总部,在北京的中心创建了一个全新的多元艺术机构类型.建筑提供博物馆硬件质量的展示空间和最先进的艺术品保护设施,同时也是一个灵活丰富的文化空间,与餐馆、酒店、公共交通基础设施结合在一起.

关键词：艺术中心拍卖行艺术空间化身交通基础设施机构类型文化空间量身定制

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