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Poul erik Andersen's radiological work on osteochondrodysplasias and interventional radiology

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World Journal of Radiology 2011年第8期3卷 210-214页

作者： Poul erik Andersen Department of Radiology Cardiovascular SectionOdense University Hospital

Poul erik Andersen is a Professor and Interventional Radiologist at the University of Southern Denmark,Odense and Odense University Hospital,*** innovative and expertise is primarily in vascular interventions where he has introduced and developed many procedures at Odense University *** significant experience and extensive scientific work has led to many posts in the Danish Society of Interventional Radiology,the European Society of Radiology and the Cardiovascular and Interventional Radiological Society of Europe,where he is a fellow and has passed the European Board of Interventional Radiology-The European qualification in Interventional Radiology.

关键词： Biography Clinical competence Education Interventional Radiology

Biodegradable dissolved organic carbon shapes bacterial community structures and co-occurrence patterns in large eutrophic Lake Taihu

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Journal of Environmental Sciences 2021年第9期33卷 205-217页

作者： Lei Zhou Yongqiang Zhou Xiangming Tang Yunlin Zhang erik Jeppesen Taihu Laboratory for Lake Ecosystem Research State Key Laboratory of Lake Science and EnvironmentNanjing Institute of Geography and LimnologyChinese Academy of SciencesNanjing 210008China University of Chinese Academy of Sciences Beijing 100049China Department of Bioscience Aarhus UniversitySilkeborg 8600Denmark Sino-Danish Centre for Education and Research Beijing 100049China Limnology Laboratory Department of Biological Sciences and Centre for Ecosystem Research and ImplementationMiddle East Technical UniversityAnkara 06800Turkey Institute of Marine Sciences Middle East Technical UniversityMersinTurkey

Interactions between dissolved organic matter(DOM)and bacteria are central in the biogeochemical cycles of aquatic ecosystems;however,the relative importance of biodegradable dissolved organic carbon(BDOC)compared with other environmental variables in structuring the bacterial communities needs further ***,we investigated bacterial communities,chromophoric DOM(CDOM)characteristics and physico-chemical parameters as well as examined BDOC via bioassay incubations in large eutrophic Lake Taihu,China,to explore the importance of BDOC for shaping bacterial community structures and co-occurrence *** found that the proportion of BDOC(%BDOC)correlated significantly and positively with the DOC concentration and the index of the contribution of recent produced autochthonous CDOM(BIX).%BDOC,further correlated positively with the relative abundance of the tryptophan-like component and negatively with CDOM aromaticity,indicating that autochthonous production of protein-like CDOM was an important source of *** richness of the bacterial communities correlated negatively with%BDOC,indicating an enhanced number of species in the refractory DOC environments.%BDOC was identified as a significant stronger factor than DOC in shaping bacterial community composition and the co-occurrence network,suggesting that substrate biodegradability is more significant than DOC quantity determining the bacterial communities in a eutrophic *** factors explained a larger proportion of the variation in the conditionally rare and abundant subcommunity than for the abundant and the rare bacterial *** findings emphasize the importance of considering bacteria with different abundance patterns and DOC biodegradability when studying the interactions between DOM and bacteria in eutrophic lakes.

关键词： Biodegradable dissolved organic carbon Bacterial community Co-occurrence networks Chromophoric dissolved organic matter Habitat niche breadth

Response of community composition and biomass of submerged macrophytes to variation in underwater light, wind and trophic status in a large eutrophic shallow lake

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Journal of Environmental Sciences 2021年第5期33卷 298-310页

作者： Baili Dong Yongqiang Zhou erik Jeppesen Kun Shi Boqiang Qin Taihu Laboratory for Lake Ecosystem Research State Key Laboratory of Lake Science and EnvironmentNanjing Institute of Geography and LimnologyChinese Academy of SciencesNanjing 210008China University of Chinese Academy of Sciences Beijing 100049China Department of Bioscience Aarhus UniversityVejlsovej 258600 SilkeborgDenmark Sino-Danish Centre for Education and Research(SDC) University of Chinese Academy of SciencesBeijing 100049China Limnology Laboratory Department of Biological Sciences and Centre for Ecosystem Research and ImplementationMiddle East Technical UniversityAnkaraTurkey

Light climate is of key importance for the growth, community composition of submerged macrophytes in lakes and, they, in turn, are affected by lake depth and the degree of eutrophication. To test the relationships between submerged macrophyte presence and the ratio of Secchi disk depth(SDD) to water depth, i.e. SDD/depth, nutrients and wind, we conducted an extensive sampling campaign in a macrophyte-dominated area of the eastern region( n = 36) in 2016 in Lake Taihu, China, and combined the data gathered with results from extensive physico-chemical monitoring data from the entire lake. We confirmed that SDD/Depth is the primary factor controlling the community composition of macrophytes and showed that plant abundance increased with increasing SDD/Depth ratio( p 0.4 ensured growth of submerged macrophytes. Total phosphorus and total nitrogen also influenced the growth and community composition of macrophytes( p 0.05). The key to restore the macrophyte beds in the lake is to reduce the nutrient loading. A decrease of the water level may contribute as well in the shallow bays but will not bring plants back in the main part of the lake. As the tolerance of shade and nutrients varied among the species studied, this should be taken into account in the restoration of lakes by addition of plants.

关键词： Underwater light climate Water depth Community composition Macrophyte Eutrophication

Hybrid lipopolymer vesicle drug delivery and release systems

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The Journal of Biomedical Research 2021年第4期35卷 301-309页

作者： erik Reimhult Mudassar Mumtaz Virk Department of Nanobiotechnology Institute for Biologically Inspired MaterialsUniversity of Natural Resources and Life SciencesVienna1190 ViennaAustria.

Hybrid lipopolymer vesicles are membrane vesicles that can be self-assembled on both the micro-and *** the nanoscale,they are potential novel smart materials for drug delivery systems that could combine the relative strengths of liposome and polymersome drug delivery systems without their respective ***,little is known about their properties and how they could be ***,most methods of investigation are limited to the *** we provide a brief review on hybrid vesicle systems with a specific focus on recent developments demonstrating that nanoscale hybrid vesicles have different properties from their macroscale counterparts.

关键词： hybrid vesicles lipopolymersomes polymersomes drug delivery lipid domains triggered release

A New Model Inspired by the Pompeii Worm to Reverse Overheating in Nanosatellites

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Space(Science & Technology) 2023年第1期3卷 133-140页

作者： Ayşe MeriçYazıcı erik Persson Department of Philosophy Lund UniversityLundSweden

Nanosatellites are exposed to extreme temperatures on the spacecraft surface,which can reach up to±100℃.In this paper,we suggest a novel solution to this challenge by the use of *** imitation of the behavior of living creatures in nature is an attempt to understand and synthesize a natural object or phenomenon in an abstract or concrete *** inspiration from living things in nature can come through the materials,processes,or designs we see around us,and there is no engineering effort *** nature,the best example of temperature reversal is the Pompeii *** Pompeii worm realizes the conversion of the excess heat it is exposed to into cooling inside a multilayered *** this work,inspired by the strategy of the Pompeii worm in reversing overheating,we present a new model for the overheating problem in nanosatellites.

关键词： form heating extreme

Skewed superstatistical distributions from a Langevin and Fokker-Planck approach

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Chinese Science Bulletin 2011年第34期56卷 3633-3638页

作者： VAN DER STRAETEN erik BECK Christian Queen Mary University of London School of Mathematical Sciences

The superstatistics concept is a useful statistical method to describe inhomogeneous complex systems for which a system parameter βfluctuatesonalargespatio-temporal scale. Inthispaper weanalyze ameasuredtimeseriesofwindspeed fluctuationsandextract the superstatistical distribution function f(β) directly from the data. We construct suitable Langevin and Fokker-Planck models with a position dependent β-field and show that they reduce to standard type of superstatistics in the overdamped limit.

关键词：普朗克复杂系统统计方法时间尺度分布函数位置相关不均匀过阻尼

Brassinosteroid biosynthesis and signaling:Conserved and diversified functions of core genes across multiple plant species

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Plant Communications 2024年第9期5卷 72-100页

作者： Brian Zebosi erik Vollbrecht Norman B.Best Department of Genetics Development and Cell BiologyIowa State UniversityAmesIA 50011USA Interdepartmental Genetics and Genomics Graduate Program Iowa State UniversityAmesIA 50011USA USDA-ARS Plant Genetics Research UnitColumbiaMO 65201USA

Brassinosteroids(BRs)are important regulators that control myriad aspects of plant growth and development,including biotic and abiotic stress responses,such that modulating BR homeostasis and signaling presents abundant opportunities for plant breeding and crop *** and other proteins involved in the biosynthesis and signaling of BRs are well understood from molecular genetics and phenotypic analysis in Arabidopsis thaliana;however,knowledge of the molecular functions of these genes in other plant species,especially cereal crop plants,is *** this manuscript,we comprehensively review functional studies of BR genes in Arabidopsis,maize,rice,Setaria,Brachypodium,and soybean to identify conserved and diversified functions across plant species and to highlight cases for which additional research is in *** performed phylogenetic analysis of gene families involved in the biosynthesis and signaling of BRs and re-analyzed publicly available transcriptomic *** trees coupled with expression data provide a valuable guide to supplement future research on BRs in these important crop species,enabling researchers to identify gene-editing targets for BR-related functional studies.

关键词： brassinosteroids maize rice Setaria soybean Brachypodium Arabidopsis

Gallbladder bile composition in patients with Crohn's disease

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World Journal of Gastroenterology 2006年第1期12卷 70-74页

作者： Annika Lapidus Jan-erikkerlund Curt Einarsson Centre of Gastrointestinal Disease Ersta HospitalDepartment of SurgeryDanderyd Hospital and Department of Gastroenterology and HepatologyKarolinska Institutet at Karolinska University Hospital HuddingeStockholmSweden

AIM： To further elucidate the pathogenesis and mechanisms of the high risk of gallstone formation in Crohn＇s disease. METHODS： Gallbladder bile was obtained from patients with Crohn＇s disease who were admitted for elective surgery （27 with ileal/ileocolonic disease and 7 with Crohn＇s colitis）. Fourteen gallstone patients served as controls. Duodenal bile was obtained from ten healthy subjects before and after the treatment with ursodeoxycholic acid. Bile was analyzed for biliary lipids, bile acids, bilirubin, crystals, and crystal detection time （CDT）. Cholesterol saturation index was calculated. RESULTS： The biliary concentration of bilirubin was about 50% higher in patients with Crohn＇s disease than in patients with cholesterol gallstones. Ten of the patients with Crohn＇s disease involving ileum and three of those with Crohn＇s colitis had cholesterol saturated bile. Four patients with ileal disease and one of those with colonic disease displayed cholesterol crystals in their bile. About 1/3 of the patients with Crohn＇s disease had a short CDT. Treatment of healthy subjects with ursodeoxycholic acid did not increase the concentration of bilirubin in duodenal bile. Several patients with Crohn＇s disease, with or without ileal resection/disease had gallbladder bile supersaturated with cholesterol and short CDT and contained cholesterol crystals. The biliary concentration of bilirubin was also increased in patients with Crohn＇s colitis probably not due to bile acid malabsorption. CONCLUSION： Several factors may be of importance for the high risk of developing gallstones of both cholesterol and pigment types in patients with Crohn＇s *** skillful technical assistance of Ms Lisbet Benthin and Ms Ingela Arvidsson is acknowledged.

关键词： Bile acid Biliary lipid composition Bilirubin Crohn's disease Gallstone disease

Bragg reflectors based on alternate RHTL-LHTL structures

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2006年第1期7卷 81-84页

作者：邹勇卓胡鑫姚军 FORSBERG erik State Key Laboratory of Modern Optical Instrumentation Zhejiang UniversityHangzhou 310027 China

New types of Bragg reflectors, multilayered periodic structures, based on alternating left-handed transmission line (LHTL) and right-handed transmission line (RHTL) are proposed. These new structures based on ideal microstrip TLs and L-C lumped elements, are designed and analyzed. We report on unusual narrow transmission bands in such kind of structures. In such multilayered structures both Bragg reflectance and the Fabry-Perot resonance exist and the phenomenon of unusual transmission is a result of competition between these two transmission effects, in which the Fabry-Perot resonance is dominant. According to our simulation results we find that this unusual transmission property exits no matter if the electrical length of the LHTL layer cancels the electrical length of the RHTL layer or not.

关键词： Bragg reflector Left-handed transmission line (LHTL) Right-handed transmission line (RHTL) L-C lumped elements Narrow bands