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Evaluating twenty-years of follow-up after orthotopic liver transplantation, best practice for donor-recipient matching: What can we learn from the past era?

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World Journal of Transplantation 2016年第3期6卷 599-607页

作者： niklas Buescher Daniel Seehofer Michael Helbig Andreas Andreou Marcus Bahra Andreas Pascher Johann Pratschke Wenzel Schoening Department of General Visceral and Transplantation Surgery Charité Campus Virchow Klinikum Department of General Visceral and Transplantation Surgery University Hospital

AIM To characterize major determinants of 20-year survival after liver transplantation(LT).METHODS This longitudinal single-institution study includes 313 consecutive patients who received a LT between 1988 and 1992. Pretransplant clinical characteristics and laboratory values were assessed and compared between 20-year survivors and non-survivors. Particular attention was paid to the Model for End-Stage Liver Disease(labM ELD)-score and the Eurotransplant Donor Risk Index(ET-DRI) to unravel their impact on 20-year survival after *** Twenty-year survivors were significantly younger(44 vs 50 years, P = 0.001), more likely to be female(49% vs 36%, P = 0.03) and less likely to be obese at the time of LT(19% vs 32%, P = 0.011). Mean labM ELD-score(P = 0.156), rate of high-urgency LT(P = 0.210), coldischemia time(P = 0.994), rate of retransplantation(P = 0.12) and average donor age(28 vs 33 years, P = 0.099) were not statistically different. The mean estimated glomerular filtration rate was higher among survivors(P = 0.007). ET-DRI > 1.4(P = 0.020) and donor age ≥ 30 years(P < 0.022) had significant influence on 20-year survival. The overall survival was not significantly impacted by labM ELD-score categories(P = 0.263).CONCLUSION LT offers excellent long-term results in case of optimal donor and recipient conditions. However, mainly due to the current organ shortage, these ideal circumstances are rarely given; thus algorithms for donor-recipient matching need to be refined, in order to enable a maximum benefit for the recipients of high quality as well as marginal organs.

关键词： Liver transplantation Long-term outcome Ideal recipient Recipient characteristics Donor-recipient matching

An elliptical blade is not a true ellipse,but a superellipse–Evidence from two Michelia species

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Journal of Forestry Research 2022年第4期33卷 1341-1348页

作者： Yuping Li Karl Jniklas Johan Gielis Ülo Niinemets Julian Schrader Rong Wang Peijian Shi College of Horticulture Jinling Institute of TechnologyNanjing 210038People’s Republic of China Bamboo Research Institute Nanjing Forestry UniversityNanjing 210037People’s Republic of China Plant Biology Section School of Integrative Plant ScienceCornell UniversityIthacaNY 14853USA Department of Biosciences Engineering University of AntwerpB-2020 AntwerpBelgium Institute of Agricultural and Environmental Sciences Estonian University of Life Sciences51006 TartuEstonia Estonian Academy of Sciences 10130 TallinnEstonia Department of Biological Sciences Macquarie UniversitySydneyNSW 2109Australia Biodiversity Macroecology and BiogeographyUniversity of Göttingen37077 GöttingenGermany

The shape of leaf laminae exhibits considerable diversity and complexity that reflects adaptations to environmental factors such as ambient light and precipitation as well as phyletic *** leaves appear to be elliptical which may represent a‘default’developmental ***,whether their geometry truly conforms to the ellipse equation(EE),i.e.,(x/a)^(2)+(y/b)^(2)=1,remains *** alternative is described by the superellipse equation(SE),a generalized version of EE,i.e.,|x/a|^(n)+|y/b|^(n)=*** test the efficacy of EE versus SE to describe leaf geometry,the leaf shapes of two Michelia species(i.e.,*** ***,and ***),were investigated using 60 leaves from each *** shows that the majority of leaves(118 out of 120)had adjusted root-mean-square errors of<0.05 for the nonlinear fitting of SE to leaf geometry,i.e.,the mean absolute deviation from the polar point to leaf marginal points was smaller than 5%of the radius of a hypothesized circle with its area equaling leaf *** estimates of n for the two species were<2,indicating that all sampled leaves conformed to SE and not to *** study confirms the existence of SE in leaves,linking this to its potential functional advantages,particularly the possible influence of leaf shape on hydraulic conductance.

关键词： Bilateral symmetry Leaf ellipticalness index Leaf laminae Leaf roundness index Magnoliaceae

不同冷却条件下A356铝合金铸件凝固组织的预测工具--热分析法

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铸造 2010年第11期59卷 1167-1171页

作者： A.niklas U.Abaunza A.I.Fernández-Calvo J.Lacaze R.Suárez 朱文高 Engineering and Foundry Processes Department AZTERLANAliendalde Auzunea 6E-48200 DurangoSpain CIRIMAT Université de ToulouseENSIACETBP7423331432 Toulouse cedex4France

在浇注铝合金铸件之前,用标准杯进行热分析以控制金属液并预测铸件的微观组织,已有数十年的历史。但是,在标准杯中获得适宜的微观组织并不能保证在真实铸件中也是如此,因为真实铸件可能是在完全不同的冷却速度下凝固的。本研究从晶粒细... 详细信息

在浇注铝合金铸件之前,用标准杯进行热分析以控制金属液并预测铸件的微观组织,已有数十年的历史。但是,在标准杯中获得适宜的微观组织并不能保证在真实铸件中也是如此,因为真实铸件可能是在完全不同的冷却速度下凝固的。本研究从晶粒细化和变质处理两方面试验了不同品质的A356合金。通过砂型铸造和金属型铸造不同直径的圆柱试样来达到不同的冷却速度。研究了在标准热分析试杯中测得的晶粒尺寸、变质率和二次枝晶臂间距(SDAS)与在圆柱试样中获得的同样参数之间的相互关系。因此,只要知道热模数和铸型类型,就能够确定所要求的标准热分析试杯中的晶粒尺寸和变质率,从而在真实铸件中获得所要求的组织。这样就能在浇注铸件前采取相应措施以改善冶金质量。

关键词： A356铝合金凝固热分析晶粒尺寸变质率

Electrochemical Mechanism of Al Metal–Organic Battery Based on Phenanthrenequinone

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Energy Material Advances 2021年第1期2021卷 15-23页

作者： Jan Bitenc Urban Košir Alen Vizintin niklas Lindahl AndražKrajnc Klemen Pirnat Ivan Jerman Robert Dominko Department of Materials Chemistry National Institute of ChemistryHajdrihova 191000 LjubljanaSlovenia Faculty of Chemistry and Chemical Technology University of LjubljanaVečna Pot 1131000 LjubljanaSlovenia Department of Physics University of GothenburgGöteborg SE-41296Sweden Department of Inorganic Chemistry and Technology National Institute of ChemistryHajdrihova 191000 LjubljanaSlovenia Alistore-European Research Institute CNRS FR 3104Hub de l’EnergieRue Baudelocque 80039 AmiensFrance

Al metal-organic batteries are a perspective high-energy battery technology based on abundant ***,the practical energy density of Al metal-organic batteries is strongly dependent on its electrochemical *** density is mostly governed by the nature of the aluminium complex ion and utilization of redox activity of the organic *** organic cathodes have been used before,detailed study of the electrochemical mechanism is typically not the primary *** the present work,electrochemical mechanism of Al metal-phenanthrenequinone battery is investigated with a range of different analytical ***,its capacity retention is optimized through the preparation of insoluble cross-coupled polymer,which exemplifies extremely low capacity fade and long-term cycling *** situ and operando ATR-IR confirm that reduction of phenanthrenequinone group proceeds through the two-electron reduction of carbonyl groups,which was previously believed to exchange only one-electron,severely limiting cathode *** of aluminium complex ion interacting with organic cathode is determined through multiprong approach using SEM-EDS,XPS,and solid-state NMR,which all point to the dominant contribution of AlCl2+*** full capacity utilization,Al metal-polyphenanthrenequinone battery utilizing AlCl2+offers an energy density of more than 200Wh/kg making it a viable solution for stationary electrical energy storage.

关键词： battery Battery utilizing

Characterization of Pectin Nanocoatings at Polystyrene and Titanium Surfaces

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Journal of Surface Engineered Materials and Advanced Technology 2013年第4期3卷 20-28页

作者： Katarzyna Gurzawska Kai Dirscherl Yu Yihua Inge Byg Bodil Jorgensen Rikke Svava Martin W.Nielsen niklas R.Jorgensen Klaus Gotfredsen Research Center for Ageing and Osteoporosis Departments of Medicine and DiagnosticsCopenhagen University Hospital GlostrupGlostrupDenmark Institute of Odontology Faculty of Health and Medical SciencesUniversity of CopenhagenCopenhagenDenmark Dansk Fundamental Metrologi A/S LyngbyDenmark Microtechnology and Surface Analysis Danish Technological InstituteTaastrupDenmark Department of Plant and Environment Sciences Faculty of ScienceUniversity of CopenhagenFrederiksbergDenmark Department of Systems Biology Technical University of DenmarkLyngbyDenmark

The titanium implant surface plays a crucial role for implant incorporation into bone. A new strategy to improve implant integration in a bone is to develop surface nanocoatings with plant-derived polysaccharides able to increase adhesion of bone cells to the implant surface. The aim of the present study was to physically characterize and compare polystyrene and titanium surfaces nanocoated with different Rhamnogalacturonan-Is (RG-I) and to visualize RG-I nanocoatings. RG-Is from potato and apple were coated on aminated surfaces of polystyrene, titianium discs and titanium implants. To characterize, compare and visualize the surface nanocoatings measurements of contact angle measurements and surface roughness with atomic force microscopy, scanning electron microscopy, and confocal microscopy was performed. We found that, both unmodified and enzymatic modified RG-Is influenced surface wettability, without any major effect on surface roughness (Sa, Sdr). Furthermore, we demonstrated that it is possible to visualize the pectin RG-Is molecules and even the nanocoatings on titanium surfaces, which have not been presented before. The comparison between polystyrene and titanium surface showed that the used material affected the physical properties of non-coated and coated surfaces. RG-Is should be considered as a candidate for new materials as organic nanocoatings for biomaterials in order to improve bone healing.

关键词： Surface Properties Titanium Polystyrene Rhamnogalacturonan-I Osseointegration

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瑞典=高福利国家？

商业周刊（中文版） 2018年第21期 28-30页

作者： Amanda Billner Rafaela Lindeberg niklas Magnusson 融汐(译)

当瑞典北部索拉夫特奥地区一家当地医院的产科病房于2017年初关闭后，准父母们别无选择，只能冒险开车去别的城市医院——最近的医院也有逾100公里车程。正因如此，当地助产师开始向准父母们讲授一项新的技能：如何在车中分娩。

关键词：福利国家瑞典医院父母城市冒险

贫富差距下的躁动——社会阶层和经济不平等如何影响人们的财富和地位追求

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贫富差距下的躁动——社会阶层和经济不平等如何影响人们的财富和...

Mo（001）表面CaO薄膜过渡层结构的STM研究

第二十三届全国心理学学术会议

作者：王喆辰 Jolanda Jetten niklas Steffens 复旦大学社会发展与公共政策学院澳大利亚昆士兰大学心理学院

社会阶层影响了人们的感知、目标和价值观,而经济不平等影响了人们的态度和行为。基于社会身份认同理论,本文开展的一系列前期研究显示,当一个人的社会阶层越高,其对于财富和地位的追求渴望也越大。基于新物质主义理论和地位焦虑理论,... 详细信息

社会阶层影响了人们的感知、目标和价值观,而经济不平等影响了人们的态度和行为。基于社会身份认同理论,本文开展的一系列前期研究显示,当一个人的社会阶层越高,其对于财富和地位的追求渴望也越大。基于新物质主义理论和地位焦虑理论,本文进一步探索了经济不平等是如何影响人们的财富和地位追求。研究1和2采用了"虚拟社会"实验范式,直接操纵被试感知到的经济不平等水平,并测量了被试对于财富和地位的追求渴望。结果显示,相比处在"经济平等"组的被试,处在"经济不平等"组的被试报告了更高财富和地位渴望。研究3使用跨文化样本,通过多层线性回归模型分析,发现社会层面的经济不平等水平(通过"基尼系数"测量)与个体层面的财富和地位追求渴望(通过人们对于"追求更多财富和地位"这一价值观的认同程度测量)呈现显著正相关。此外,本文还发现社会阶层对于"经济不平等—财富和地位追求"的关联具有调节作用。具体而言,较低社会阶层人士,其追求更多财富和地位的渴望,受到经济不平等程度的影响更大。总体而言,这些研究结果揭示了经济不平等在追求动机层面的社会心理影响。本文进而探讨了这种影响的后果,如贫富差距与物质主义和拜金主义的关系、贫富差距加剧了社会躁动不安、影响社会和谐稳定等,并为如何缓解这些社会躁动、鼓励良性社会竞争提供了思路和建议。

关键词：社会阶层经济不平等财富追求地位追求

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Mo（001）表面CaO薄膜过渡层结构的STM研究

催化剂总体积及压降最小化的燃气轮机尾气多种污染物催化脱除应用

中国化学会第29届学术年会

作者：邵翔 niklas Nilius Hans-Joachim Freund 中国科学技术大学化学物理系 Fritz-haber Institute of Max-Planck Society Faradayweg 4-614195 BerlinGermany

生长在金属衬底表面的氧化物薄膜,在其厚度较薄的时候往往具有有别于体相氧化物的表面性质。这一方面是由于金属基底的电子态可以直接投射到表面上,影响表面分子过程;另一方面,也往往由于基底的晶格失配而导致薄膜结构相对于体相结构有... 详细信息

生长在金属衬底表面的氧化物薄膜,在其厚度较薄的时候往往具有有别于体相氧化物的表面性质。这一方面是由于金属基底的电子态可以直接投射到表面上,影响表面分子过程;另一方面,也往往由于基底的晶格失配而导致薄膜结构相对于体相结构有偏离,只是随着膜厚增加而不断趋于体相结构。我们在Mo（001）表面成功的制备了CaO（001）单晶化薄膜[1]。然而体系的晶格失配较大,达到了11%,因此薄膜采取了Stranski-Krostanov模式进行生长,即先在Mo（001）表面形成4-5层具有CaxMo1-xO结构的过渡层[2],随后纯相的CaO才开始以岛状形式生长并弥合成膜。我们特别的研究了其中的过渡层薄膜。为了补偿晶格失配造成的应力,其化学组成随着膜厚发生渐变,相应的电子结构也随之变化。而在不同制备条件下,其结构也会不同。另外,对于分子和金属的吸附,这种过度层也展现出了一定的有趣性质。这些性质可以用来调控负载金属的催化活性。

关键词： CaO 薄膜过渡层调控 STM

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催化剂总体积及压降最小化的燃气轮机尾气多种污染物催化脱除应用