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High-accuracy characterization of pyroelectric materials:A noncontact method based on surface potential measurements

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Journal of Advanced Dielectrics 2023年第4期13卷 52-59页

作者： Reinhard Schwödiauer Simona bauer-Gogonea Martin Kaltenbrunner Volodymyr Tkachenko Simonetta Grilli Soft Matter Physics Johannes Kepler UniversityAltenbergerstraße 694040 LinzAustria Institute of Applied Sciences&Intelligent Systems National Research Council(CNR-ISASI)Via Campi Flegrei 3480078 Pozzuoli(NA)Italy

The characterization of pyroelectric materials is essential for the design of pyroelectric-based *** current measurement is the commonly employed method,but can be complex and requires surface ***,we present noncontact electrostatic voltmeter measurements as a simple but highly accurate alternative,by assessing thermally-induced pyroelectric surface potential *** introduce a refined model that relates the surface potential variations to both the pyroelectric coefficient and the characteristic figure of merit(FOM)and test the model with square-shaped samples made from PVDF,LiNbO3 and *** characteristic pyroelectric coefficient for PVDF,LiNbO3 and LiTaO3 was found to be 33.4,59.9 and 208.4μC m−2 K−1,*** values are in perfect agreement with literature values,and they differ by less than 2.5%from values that we have obtained with standard pyroelectric current measurements for comparison.

关键词： Pyroelectric coefficient surface potential figure of merit

Brown Algae (Phaeophyceae) from the Coast of Madagascar:preliminary Bioactivity Studies and Isolation of Natural Products

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Natural Products and Bioprospecting 2015年第5期5卷 223-235页

作者： Marie Pascaline Rahelivao Margit Gruner Hanta Andriamanantoanina Ingmar bauer Hans-Joachim Knolker Department Chemie Technische Universitat DresdenBergstraße 6601069 DresdenGermany Centre National de Recherche sur l’Environnement MESupResBP 1739101 AntananarivoMadagascar

Eight species of brown algae(Phaeophyceae)from the coast of Madagascar have been investigated for their chemical ***(3)was obtained as the most abundant *** brown alga Sargassum ilicifolium was the source for the first isolation of the terpenoid C27-alcohol 1,10,2-trinorsqualenol(1)from marine *** *** we isolated the highly unsaturated glycolipid 1-O-palmitoyl-2-O-stearidonoyl-3-O-β-D-galactopyranosylglycerol(4)and we report the first full assignment of its ^(1)H and ^(13)C NMR ***-90-fucoxanthinone(8)along with 24-ketocholesterol(5),(22E)-3b-hydroxycholesta-5,22-dien-24-one(6),and saringosterol(7)were obtained from Turbinaria *** crude extracts of all eight species of brown algae exhibited a pronounced antimicrobial activity against the Gram-positive bacteria Bacillus cereus,Staphylococcus aureus,and Streptococcus pneumoniae.

关键词： Brown algae Steroids Terpenoids NMR spectroscopy Antimicrobial activity

Male Tibetan macaques' (Macaca thibetana) choice of infant bridging partners

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Zoological Research 2014年第3期35卷 222-230页

作者： Briana bauer Lori K. SHEERAN Megan D. MATHESON Jin-Hua LI R. Steven WAGNER Primate Behavior and Ecology Program Central Washington University Department of Anthropology Central Washington University Department of Psychology Central Washington University School of Resources and Environment Anhui University School of Life Sciences Anhui Normal University Department of Biological Sciences Central Washington University

Adult male Tibetan(Macaca thibetana), Barbary(M. sylvanus), and stump-tailed macaques(M. arctoides) engage in bridging, a ritualized infant-handling behavior. Previous researchers found a bias toward the use of male infants for this behavior, but its function is debated. Explanations include three hypotheses: paternal care, mating effort, and agonistic buffering. We studied a group of habituated, provisioned Tibetan macaques to test whether adult males' affiliative relationships with females predicted their use of an infant for bridging. We also examined biases for sex, age, and individual in males' choice of bridging infant. We collected data via all occurrences, focal animal, and scan methods, from August to September 2011 at the Valley of the Wild Monkeys, China. We found that male infants were significantly preferred over females for bridging, but of three male infants in the group, only one was used by all males, while one male infant was used less often than expected. Adult males had females they were significantly more likely to be proximate to and/or to groom, but these corresponded to the mother of the bridging infant for only one male. Our results are most consistent with the agonistic buffering hypothesis: lower-ranked males used the alpha male's preferred bridging infant in an attempt to regulate their interactions with the alpha.

关键词： Agonistic buffering Affiliated infant Paternal care

Vacancy Aggregation in Diamond Films grown in CH4＋H2 Atmosphere by MPCVD

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Chinese Physics Letters 2007年第12期24卷 3502-3505页

作者：刘燕燕张庆瑜 Elizabeth bauer-GROSSE State Key Laboratory of Materials Modification by Laser Ion and Electron Beams Dalian University of Technology Dalian 116024 Laboratoire de Science et Gdnie des Surfaces UMR 7570 Ecole des Mines Parc de Saurupt Nancy Cedex 54042 Prance

Transmission electron microscopy is applied to study the diamond film grown in a C114 and 1t2 gaseous mixture by microwave plasma assisted chemical vapour deposition. Defects in the nanometre scale, dislocation loops, are first observed in diamond films. The dislocation loops are found to be of co-existence with planar defects and are next to the planar defects for {111} faceting grains. A possible mechanism is suggested to interpret the co-existence of dislocation loops with planar defects.

关键词： thermoelectric half-Heusler compounds thermal conductivity

Financial Statements of Banks as a Source of Information About Implementation of IFRS 15： The Evidence from Poland

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Journal of Modern Accounting and Auditing 2017年第6期13卷 235-248页

作者： Kinga bauer Giovanna Centorrino Cracow University of Economics Krakow Poland University of Messina Messina Italy

Banks in the economies of individual countries play the role of entities of public trust and are perceived as ＂too big to fail＂. In fact, they are exposed to risks associated with business operations. In practice, there are even instances of banks going bankrupt. Therefore, the reliability of the financial statements of a bank as a source of information about its financial condition is of particular importance. The main objective of creating IAS/IFRS and their implementation within the European Union is the strive to standardize accounting rules utilized by companies and other organizations. IFRS, as any other regulations, are subject to change over years. One of the recent changes is the introduction of IFRS 15 ＂Revenue from Contracts with Customers＂. In all entities using IAS/IFRS, communication of planned changes should involve disclosure ahead of time, regarding the analysis of their impact on the financial statements. The purpose of this paper has been to analyze whether the financial statements of banks contain any records on the impact of IFRS 15. These analyses are within the mainstream of studying how complete and prospective is the information contained in the financial statements for external users. The subjects for research are the consolidated financial statements of five major banks in Poland. As a result of research, it was found that in all studied cases, work on the implementation of IFRS 15 was observed. However, looking at every bank separately, a differentiated approach to presenting information on the standard is observed, which may be a hindrance for users of banks＇ financial statements.

关键词： bank financial statement International Financial Reporting Standards IFRS 15 Poland

Systemic-to-pulmonary artery pressure ratio as a predictor of patient outcome following liver transplantation

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World Journal of Hepatology 2016年第32期8卷 1384-1391页

作者： Annette Rebel Dung Nguyen Brooke bauer Paul A Sloan Amy DiLorenzo Zaki-Udin Hassan Department of Anesthesiology and Surgery Medical Center N 202University of Kentucky

AIM To assess the value of the mean systemic-to-pulmonary artery pressure(MAP/m PAP) ratio for predicting outcomes following orthotopic liver transplant(OLT). METHODS A retrospective data analysis was performed and data(mean arterial blood pressure, mean pulmonary artery pressure and Cardiac Index) were collected at several points during OLT. Outcomes evaluated were duration of postoperative endotracheal intubation [ET; minutes after intensive care unit(ICU) arrival], length of ICU stay, total hospitalization and frequency of immediate postoperative complications. A total of 91 patients were included in the data analysis. Based on the intraoperative course of the MAP/m PAP ratio, 2 hemodynamic responses were identified: Group 1(MAP/m PAP ratio increase during anhepatic period with postreperfusion recovery, n = 66); and Group 2(MAP/m PAP ratio with no change during anhepatic period or decreased without recovery, n = 25). RESULTS The main finding was that the lack of increased MAP/m PAP ratio in the anhepatic period was associated with:(1) longer intubation times; and(2) prolonged ICU stays and total hospitalization time, when compared to patients with an increase in MAP/m PAP ratio during the anhepatic period. CONCLUSION The data from this retrospective study should raise awareness to the mean systemic to pulmonary artery pressure ratio as a potential indicator for poor outcome after OLT. Further prospective studies are needed for validation.

关键词： Anesthesiology Liver transplantation Right heart function Outcome Morbidity

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稀释燃烧的火焰稳定性

燃烧科学与技术 2009年第2期15卷 103-108页

作者：刘玉英 MOST Jean-Michel bauer Philippe 杨茂林北京航空航天大学能源与动力工程学院北京100083 法国国家科学研究中心燃烧与爆炸实验室普瓦捷86961法国

采用实验研究的方法探讨了反应物预热温度与稀释率两个因素对稀释燃烧火焰稳定性的影响.实验以氮气稀释的甲烷-空气对冲扩散火焰为研究对象,确定了不同反应物预热温度与氧化剂稀释率(氧气体积分数)时火焰的熄火极限,结果表明,增大反应... 详细信息

采用实验研究的方法探讨了反应物预热温度与稀释率两个因素对稀释燃烧火焰稳定性的影响.实验以氮气稀释的甲烷-空气对冲扩散火焰为研究对象,确定了不同反应物预热温度与氧化剂稀释率(氧气体积分数)时火焰的熄火极限,结果表明,增大反应物预热温度拓宽了火焰稳定燃烧区域,而增加氧化剂稀释率(降低氧气体积分数)会降低稀释火焰的稳定性,二者对火焰稳定性的影响作用相反.为了进一步分析反应物预热温度与稀释率对火焰稳定性的影响程度,引入了估算的Damk hler数,分析表明,在实验研究范围内,反应物预热温度对火焰稳定性的影响比稀释率的影响显著,是火焰稳定性的主要影响因素.

关键词：对冲火焰稀释燃烧稳定性熄火极限

利用飞秒双光子光电子发射研究GaAs(100)的自旋动力学过程

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物理学报 2005年第7期54卷 3200-3205页

作者：郭立俊 Jan-Peter Wüstenberg Andreyev Oleksiy Michael bauer Martin Aeschlimann 凯泽斯劳腾大学物理系

超短激光技术的发展为研究材料中的超快光动方学过程提供了重要的实验手段,也使得人们能够更为深入地研究电子的自旋动力学行为.GaAs(100)表面由于费米钉扎而会导致能带弯曲,位于该区域的电子及其自旋特性将会明显不同于体相材料中的情... 详细信息

超短激光技术的发展为研究材料中的超快光动方学过程提供了重要的实验手段,也使得人们能够更为深入地研究电子的自旋动力学行为.GaAs(100)表面由于费米钉扎而会导致能带弯曲,位于该区域的电子及其自旋特性将会明显不同于体相材料中的情况.利用时间分辨和自旋分辨的双光子光电子发射技术研究了p型掺杂GaAs(100)表面的电子极化动力学过程.结果表明,由费米钉扎而引起的能带弯曲明显影响电子的自旋弛豫过程,从实验上观察到了GaAs(100)表面能带弯曲区域的电子自旋翻转时间存在近2个量级的差异(从几纳秒到几十皮秒),基于电子_自旋交换相互作用的BAP机理在自旋弛豫过程中起着主导作用.

关键词：动力学过程双光子光电子发射飞秒能带弯曲交换相互作用弛豫过程动力学行为实验手段激光技术电子极化 P型掺杂发射技术时间分辨电子自旋主导作用表面 BAP 材料钉扎费米

Optimizing water resources allocation in the Haihe River basin under groundwater sustainability constraints

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Journal of Geographical Sciences 2019年第6期29卷 935-958页

作者： Grith MARTINSEN LIU Suxia MO Xingguo bauer-GOTTWEIN Peter Key Laboratory of Water Cycle and Related Land Surface Processes Institute of Geographic Sciences and Natural Resources ResearchCAS Department of Environmental Engineering Technical University of Denmark College of Resources and Environment/Sino-Danish Center for Education and Research University of Chinese Academy of Sciences Sino-Danish Center for Education and Research

This study applies a hydroeconomic optimization method for water resources management in the highly water stressed Haihe River basin. A multi-objective, multi-temporal deterministic hydroeconomic optimization model has been built to quantify the economic trade-offs and reveal "minimum cost strategies" when reducing groundwater abstraction to sustainable levels. A complex basin representation, with ～140,000 decision variables is formulated where each decision variable represents a flow-path from a water source to a sink. Available water sources are runoff generated by the sub-basins upstream the nine major surface water reservoirs, the inter-basin transfers from Yellow River and South to North Water Transfer Project(SNWTP) and the natural groundwater recharge to the three main groundwater aquifers. Water demands, i.e. sinks, are aggregated for each model sub-basin in categories of the major agricultural users, domestic, industrial and ecological water demands. Each demand is associated with a curtailment cost and groundwater abstraction with a pumping cost. Groundwater overdraft is constrained in each model scenario, ranging from unlimited overdraft in the plain area groundwater aquifer to sustainable abstractions over an 8-year period. Inflow upstream Yuqiao reservoir, and the inter-basin transfers from SNWTP and Yellow River are identified as the water resources with the highest increase in average shadow prices when limiting groundwater overdraft. An increase in inflow shadow prices of 37.5% indicates that these water sources will be most valuable if sustainable groundwater abstraction should be achieved. The shadow prices of water sources reveal when and where in the Haihe River basin users are curtailed if water resources are managed in the most optimal way. Average shadow prices of 1.6 yuan/m3 for all surface water sources in the sustainable abstraction scenarios shows that overdraft can be avoided by curtailment of users with a willingness-to-pay ≤1.6 yuan/m3.

关键词： Haihe River China hydroeconomic optimization linear programming groundwater sustainability spatio-temporal economic trade-offs decision support