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Adaptive-optical 3D microscopy for microfluidic multiphase flows

Light(Advanced Manufacturing) 2024年第3期5卷 105-119页

作者： Clemens Bilsing erik nützenadel Sebastian Burgmann Jürgen Czarske Lars Büttner Laboratory of Measurement and Sensor System Techniques TUD Dresden University of Technology01069 DresdenGermany Chair of Fluid Mechanics Bergische Universitát Wuppertal42119 WuppertalGermany BIOLAS Laboratory of Measurement and Sensor System Techniques01069 DresdenGermany

Measurements based on optical microscopy can be severely impaired if the access exhibits variations of the refractive *** the case of fluctuating liquid-gas boundaries,refraction introduces dynamical aberrations that increase the measurement *** is prevalent at multiphase flows(***,film flows)that occur in many technical applications as for example in coating and cleaning processes and the water management in fuel *** this paper,we present a novel approach based on adaptive optics for correcting the dynamical aberrations in real time and thus reducing the measurement *** shape of the fluctuating water-air interface is sampled with a reflecting light beam(Fresnel Guide Star)and a Hartmann-Shack sensor which makes it possible to correct its influence with a deformable mirror in a closed ***-dimensional flow measurements are achieved by using a double-helix point spread *** measure the flow inside a sessile,oscillating 50-μl droplet on an opaque gas diffusion layer for fuel cells and show that the temporally varying refraction at the droplet surface causes a systematic underestimation of the flow field magnitude corresponding to the first droplet eigenmode which plays a major role in their detachment *** demonstrate that the adaptive optics correction is able to reduce this systematic ***,the adaptive optics system can pave the way to a deeper understanding of water droplet formation and detachment which can help to improve the efficiency of fuels cells.

关键词： Double-Helix point spread function Adaptive optics Particle tracking velocimetry Aberration correction Depth-resolving microscopy Closed-loop control

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一场关于对比的讨论洛杉矶Departamento零售店

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室内设计与装修 2025年第1期 78-83页

作者：无 erik Stackpole Undehn(摄影) coco(编译) 22RE 不详

总部位于洛杉矶的多学科事务所22RE受豪华男装多品牌零售商Departamento邀请,为其在洛杉矶的最新店面进行设计。该店位于洛杉矶市中心的建筑零售飞地Signal内,是加州高档生活方式和设计品牌的聚集地。与现有的Departamento店面类似,顾... 详细信息

总部位于洛杉矶的多学科事务所22RE受豪华男装多品牌零售商Departamento邀请,为其在洛杉矶的最新店面进行设计。该店位于洛杉矶市中心的建筑零售飞地Signal内,是加州高档生活方式和设计品牌的聚集地。与现有的Departamento店面类似,顾客通过位于Concierge Coffee的隐蔽入口进入店面后,会发现自己置身于一个由镜面墙壁组成的入口。通过这种俏皮的方式将顾客带入店内。

关键词：洛杉矶设计品牌零售商店面事务所零售店

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Benefits of past inventory data as prior information for the current inventory

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Forest Ecosystems 2020年第2期7卷 263-273页

作者： Annika Kangas Terje Gobakken erik næsset Bioeconomy and Environment Natural Resources Institute Luke(Finland)Yliopistokatu 680100 JoensuuFinland Faculty of Environmental Sciences and natural Resource Management Norwegian University of Life SciencesP.O.Box 5003NO-1432ÅsNorway.

Background:When auxiliary information in the form of airborne laser scanning(ALS)is used to assist in estimating the population parameters of interest,the benefits of prior information from previous inventories are not *** a simulation study,we compared three different approaches:1)using only current data,2)using nonupdated old data and current data in a composite estimator and 3)using updated old data and current data with a Kalman *** also tested three different estimators,namely i)Horwitz-Thompson for a case of no auxiliary information,ii)model-assisted estimation and iii)model-based *** compared these methods in terms of bias,precision and accuracy,as estimators utilizing prior information are not guaranteed to be ***:The largest standard errors were obtained when neither prior information nor auxiliary information were *** a growth model was not applied to update the old data,the resulting composite estimators were *** RMSEs were obtained using non-updated prior information in a composite *** the ALS data as auxiliary information produced smaller RMSE than using prior information from the old *** smallest RMSEs were obtained when both the auxiliary data and updated old data were *** growth updating the bias can be substantially reduced,although design-unbiasedness of the estimator cannot be ***:Prior information from old inventory data can be useful also when combined with highly accurate auxiliary information,when both data sources are efficiently *** benefits obtained from using the old data will increase if the past harvests can be detected without errors from changes in the auxiliary data instead of being predicted with models.

关键词： Data fusion Kalman filtering

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Emerging use of artificial intelligence in inflammatory bowel disease

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World Journal of Gastroenterology 2020年第44期26卷 6923-6928页

作者： Arushi Kohli erik A Holzwanger Alexander n Levy Department of Internal Medicine Tufts Medical CenterBostonMA 02111United States Division of Gastroenterology and Hepatology Tufts Medical CenterBostonMA 02111United States

Inflammatory bowel disease(IBD)is a complex,immune-mediated gastrointestinal disorder with ill-defined etiology,multifaceted diagnostic criteria,and unpredictable treatment *** in IBD diagnostics,including developments in genomic sequencing and molecular analytics,have generated tremendous interest in leveraging these large data platforms into clinically meaningful *** intelligence,through machine learning facilitates the interpretation of large arrays of data,and may provide insight to improving IBD *** potential applications of machine learning models are vast,further research is needed to generate standardized models that can be adapted to target IBD populations.

关键词： Artificial intelligence Machine learning Automated diagnostics Colorectal neoplasia screening Multiomic data Predictive models

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The p(l)ot thickens:cannabinoid receptors on astroglial mitochondria coordinate animal behaviors by regulating lactate availability for neurons

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Signal Transduction and Targeted Therapy 2020年第1期5卷 896-898页

作者： erik Keimpema Tibor Harkany Alán Alpár Department of Molecular neurosciences Center for Brain ResearchMedical University of ViennaViennaAustria Department of neuroscience Biomedicum D7Karolinska InstitutetSolnaSweden SE nAP Research Group of Experimental neuroanatomy and Developmental Biology Semmelweis UniversityBudapestHungary Department of Anatomy Histologyand EmbryologySemmelweis UniversityBudapestHungary

The coordinated interplay between neurons and astroglia,the latter producing essential metabolic precursors for neurons,is critical for the precision of neurotransmission in the execution of specific *** recently,Jimenez-Blasco et al.1 identified CB1 cannabinoid receptors in astroglial mitochondria as gatekeepers of lactate production by regulating the stability of mitochondrial complex I through the hypoxia-inducible factor-1 pathway and thus,metabolically tuning neurons that control social behaviors.

关键词： al thick coordinate

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The Ti-TAn plasmid toolbox for TurboID-based proximity labeling assays in nicotiana benthamiana

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Journal of Integrative Plant Biology 2024年第2期66卷 166-168页

作者： Huang Tan Yu Zhou erik Dinius Rosa Lozano-Durán Department of Plant Biochemistry Center for Plant MolecularBiology(ZMBP)Eberhard Karls UniversityTubingenD‐72076Germany

Protein-protein interactions and the formation of protein complexes play a central role in the regulation of virtually all aspects of *** identification and characterization of interactions between proteins is the bas... 详细信息

关键词： proximity complexes enable

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Possible role of power-to-vehicle and vehicle-to-grid asstorages and flexible loads in the German 110 kV distributiongrid

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Frontiers in Energy 2017年第2期11卷 146-154页

作者： erik BLASIUS Department for Energy Distribution and High Voltage Engineering Brandenburg University of Technology Cottbus-Senflenberg 03046Cottbus Germany

The sectoral coupling of road traffic (in form of E-Mobility) and electrical energy supply (known as power-to-vehicle (P2V), vehicle-to-grid (V2G) is discussed as one of the possible development concepts for the flexible system integration of renewable energy sources (RES) and the support of the objectives of the German energy transition (aka. Energiewende). It is obvious that E-mobility, which shall produce as few emissions as possible, should be based on the exclusive use of renewable energies. At the same time, the E-mobility can help to reduce the negative effects of the grid integration of RES to the distribution grids. However, this assumes that the electric vehicles are smart integrated to the grids where they charge, meaning that they must be able to communicate and be controllable. Because per se unplanned and uncontrollable charging processes are harmful for the grid operation, especially if they occur frequently and unexpected in similar time periods, the effects can hardly be controlled and can lead to serious technical problems in practical grid operation. This paper provides an insight into the current development of E-mobility in Germany. The insight will be matched with the German development of the RES. By the combination of both sectors, the possible role of the E-mobility for the distribution grid will be depicted, which can have positive and negative aspects.

关键词： P2V V2G grid integration electric vehicles distribution grid

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Real-time performance of DAE and ODE based estimators evaluated on a diesel engine

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Science China(Information Sciences) 2018年第7期61卷 27-39页

作者： erik H?CKERDAL erik FRISK Lars erikSSOn Scania CV AB Vehicular Systems Link?ping University

Computation and sampling time requirements for real-time implementation of observers is studied. A common procedure for state estimation and observer design is to have a system model in continuous time that is converted to sampled time with Euler forward method and then the observer is designed and implemented in sampled time in the real time system. When considering state estimation in real time control systems for production there are often limited computational resources. This becomes especially apparent when designing observers for stiff systems since the discretized implementation requires small step lengths to ensure stability. One way to reduce the computational burden, is to reduce the model stiffness by approximating the fast dynamics with instantaneous relations, transforming an ordinary differential equations(ODE)model into a differential algebraic equation(DAE) model. Performance and sampling frequency limitations for extended Kalman filter(EKF)'s based on both the original ODE model and the reduced DAE model are here analyzed and compared for an industrial system. Furthermore, the effect of using backward Euler instead of forward Euler when discretizing the continuous time model is also analyzed. The ideas are evaluated using measurement data from a diesel engine. The engine is equipped with throttle, exhaust gas recirculation(EGR), and variable geometry turbines(VGT) and the stiff model dynamics arise as a consequence of the throttle between two control volumes in the air intake system. The process of simplifying and modifying the stiff ODE model to a DAE model is also discussed. The analysis of the computational effort shows that even though the ODE, for each time-update, is less computationally demanding than the resulting DAE, an EKF based on the DAE model achieves better estimation performance than one based on the ODE with less computational effort. The main gain with the DAE based EKF is that it allows increased step lengths without degrading the

关键词： estimation learning DAE ODE EKF observability real-time

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Efficacy of anticoagulant-free alternative bait products against house mice(Mus musculus)and brown rats(Rattus norvegicus)

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Integrative Zoology 2010年第1期5卷 44-52页

作者： erik SCHMOLZ Federal Environmental Agency BerlinGermany

The attractiveness and efficacy of four anonymous anticoagulant-free alternative rodenticides(active ingredients cellulose or plaster)were tested on wild strain groups of house mice(Mus musculus Linnaeus)and brown rats(Rattus norvegicus Berkenhout)in laboratory choice and no-choice *** no-choice tests,the rodenticide product was offered ad libitum to the animals for 21 days(mice)and 10 days(rats),*** choice tests,the rodenticide product and non-poisoned food were offered for 28 days(mice)and 14 days(rats).Two products with cellulose(C1 and C2)as the active ingredient were tested against both mice and *** two no-choice tests with mice,all animals died within 14 days(C1)and 21 days(C2);in a third no-choice test,11%(2/18)of mice survived(C1:21 days).In all three tests,numerous incidents of cannibalism were *** attractiveness of cellulose baits was tested for one product(C1)in three trials against normal food *** all trials,bait consumption was low and all mice survived(15-34 days).Two no-choice trials with cellulose baits(C1)were conducted on groups of Rattus norvegicus;11 of 12 rats survived the bait feeding period and no cannibalism or sign of aggression between conspecifics was *** plaster-based(CaSO_(4)·0.5H_(2)O)products(P1 and P2)were tested against both mice and rats;in no-choice tests,only one mouse(n=20)and no rats(n=8)were killed,although the baits proved to be attractive for rats and mice in choice *** results of these experiments suggest that neither cellulose-based nor plaster-based rodenticides are suitable agents for the control of Mus musculus and Rattus norvegicus.

关键词： cellulose Mus musculus plaster Rattus norvegicus rodenticides

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Detecting the presence of natural forests using airborne laser scanning data

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Forest Ecosystems 2023年第6期10卷 668-680页

作者： Marie-Claude Jutras-Perreault Terje Gobakken erik næsset Hans OleØrka Faculty of Environmental Sciences and natural Resource Management Norwegian University of Life SciencesNMBUP.O.BoxNO-1432ÅsNorway

Centuries of forest exploitation have caused significant loss of natural forests in Europe,leading to a decline in populations for many *** prevent further loss in biodiversity,the norwegian government has set a target of protecting 10%of the forested ***,recent data from the national Forest Inventory(nFI)reveals that less than 2%of norway's forested area consists of natural *** identify forests with high conservation value,we used vertical and horizontal variables derived from airborne laser scanning(ALS)data,along with nFI plot *** study aimed to predict the presence of natural forests across three counties in southeastern norway,using three different definitions:pristine,near-natural,and semi-natural *** forests are scarce,and their underrepresentation in field reference data can compromise the accuracy of the *** address this,we assessed the potential gain of including additional field data specifically targeting natural forests to achieve a better balance in the ***,we examined the impact of stratifying the data by dominant tree species on the performance of the *** results revealed that semi-natural forests were the most accurately predicted,followed by near-natural and pristine forests,with Matthews correlation coefficient values of 0.32,0.24,and 0.17,*** additional field data did not improve the ***,stratification by species improved the accuracy of predictions for near-natural and semi-natural forests,while reducing accuracy for pristine *** use of horizontal variables did not improve the *** study demonstrates the potential of ALS data in identifying forests with high conservation *** provides a basis for further research on the use of ALS data for the detection and conservation of natural forests,offering valuable insights to guide future forest preservation efforts.

关键词： natural forest ALS naturalness Vertical variables Horizontal variables Biodiversity Forest condition Ecosystem services

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