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人通过膳食对波罗的海鲱鱼有机氯的摄入:个体鱼类差别和渔业管理所引起的后果

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AMBIO－人类环境杂志 2007年第2期36卷 244-251页

作者： mikko kiljunen Mari Vanhatalo Samu Mntyniemi Heikki Peltonen Sakari Kuikka Hannu Kiviranta Raimo Parmanne Jouni T.Tuomisto Pekka J.Vuorinen Anja Hallikainen Matti Verta Jukka Pnni Roger I.Jones Juha Karjalainen 赵绪才芬兰于韦斯屈莱大学芬兰赫尔辛基大学国家公共卫生研究所芬兰游钓和渔业研究所芬兰食品安全局芬兰环境研究所(SYKE) 于韦斯屈莱大学

该研究探讨了芬兰人通过膳食摄入的源于波罗的海北部鲱鱼的有机氯(PCDD/F和PCB)可以受渔业管理影响的程度。这项研究是通过利用通用的模型工具(例如鲱鱼的种群模型和生物能量学模型等)对人的摄入量进行估计来开展的。我们利用概率方法... 详细信息

该研究探讨了芬兰人通过膳食摄入的源于波罗的海北部鲱鱼的有机氯(PCDD/F和PCB)可以受渔业管理影响的程度。这项研究是通过利用通用的模型工具(例如鲱鱼的种群模型和生物能量学模型等)对人的摄入量进行估计来开展的。我们利用概率方法来说明由于鲱鱼个体的变化而导致的人体摄入有机氯的变化。我们的估计与目前的预防限量和使用建议进行了比较。结果表明现在鲱鱼的消费水平和频率很有可能超过了所建议的PCDD/F PCB的摄入限量。此外,我们的研究结果清楚地表明在对类二恶英有机氯的风险管理中,对捕鱼的调节(在这种情况下增加捕鱼压力)远不及调节对鲱鱼的消费更能减少风险。增加捕鱼仅仅稍微的减少芬兰鱼货市场上的鲱鱼的有机氯浓度。

关键词：波罗的海渔业管理摄入量有机氯鲱鱼鱼类个体膳食

High-performance portable grating-based surface plasmon resonance sensor using a tunable laser at normal incidence

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Photonics Research 2024年第5期12卷 947-958页

作者： DUC LE ANNI RANTA-LASSILA TEEMU SIPOLA mikko KARPPINEN JARNO PETAJA MINNA KEHUSMAA SANNA AIKIO TIAN-LONG GUO MATTHIEU ROUSSEY JUSSI HILTUNEN ALEXEY POPOV VTT Technical Research Centre of Finland 90570 OuluFinland Department of Physics and Mathematics University of Eastern FinlandFI-80101 JoensuuFinland

Surface plasmon resonance(SPR)sensors are among the most sensitive *** such devices,a grating is a compelling alternative to a prism for the excitation of a surface plasmon,especially in the development of sensors for point-of-care applications due to their compactness and ***,we demonstrate the use of a tunable laser in a grating-based SPR system for further miniaturization and *** tunable laser working at normal incidence replaces spectral and moving components,while also simplifying the optical *** incidence is conventionally avoided due to the complexity of the control of degenerated SPR *** investigate,both computationally and experimentally,the splitting of the SPR modes at small nonzero incidences,which is lacking in previously reported *** optimizing the grating configuration,we were able to diminish the SPR mode splitting phenomenon when the excitation was feasible with the normal incidence *** fabricated sensor showed a high sensitivity of 1101.6 nm/***,the figure of merit of the sensor,defined as the ratio between the sensitivity and bandwidth of the SPR dip,was *** experimental results were consistent with the simulation *** also demonstrate its capability for detecting low concentrations of glucose and creatinine with the limit of detection of 14.2 and 19.1 mmol/L,respectively.

关键词： tunable splitting excitation

Quantitative in situ measurement of optical force along a strand of cleaved silica optical fiber induced by the light guided therewithin

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Photonics Research 2021年第10期9卷 2016-2023页

作者： mikko PARTANEN HYEONWOO LEE KYUNGHWAN OH Photonic Device Physics Laboratory Department of PhysicsYonsei UniversitySeoul 03722Republic of Korea Photonics Group Department of Electronics and NanoengineeringAalto University00076 AaltoFinland

We propose an optomechanical system to quantify the net force on a strand of cleaved silica optical fiber in situ as the laser light is being guided through *** strands of the fiber were bonded to both sides of a macroscopic oscillator,whose movements were accurately monitored by a Michelson *** laser light was propagating with variable optical powers and frequency ***,we discovered that the driving force for the oscillator consisted of not only the optical force of the light exiting from the cleaved facets but also the tension along the fiber induced by the light guided *** net driving force was determined only by the optical power,refractive index of the fiber,and the speed of light,which pinpoints its fundamental origin.

关键词： fiber optical interferometer

The Linearized Calderón Problem on Complex Manifolds

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Acta Mathematica Sinica,English Series 2019年第6期35卷 1043-1056页

作者： Colin GUILLARMOU mikko SALO Leo TZOU Laboratoire de Mathématiques d'Orsay Université Paris-Sud CNRS Université Paris-Saclay Department of Mathematics and Statistics University of Jyv?skyl? School of Mathematics and Statistics University of Sydney

In this note we show that on any compact subdomain of a K?hler manifold that admits sufficiently many global holomorphic functions, the products of harmonic functions form a complete set. This gives a positive answer to the linearized anisotropic Calderón problem on a class of complex manifolds that includes compact subdomains of Stein manifolds and sufficiently small subdomains of K?hler manifolds. Some of these manifolds do not admit limiting Carleman weights, and thus cannot be treated by standard methods for the Calderón problem in higher dimensions. The argument is based on constructing Morse holomorphic functions with approximately prescribed critical points. This extends earlier results from the case of Riemann surfaces to higher dimensional complex manifolds.

关键词： Inverse problem Calderón problem complex manifold

Control of exterior ballistic properties of spin-stabilized bullet by optimizing internal mass distribution

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Defence Technology（防务技术） 2019年第1期15卷 38-50页

作者： Janne Lahti Timo Sailaranta mikko Harju Kai Virtanen Systems Analysis Laboratory Department of Mathematics and Systems AnalysisAalto University Aero RD Ltd Systems Analysis Laboratory Department of Mathematics and Systems AnalysisAalto Universit Department of Military Technology National Defence University of Finland

This paper introduces a novel approach for controlling the exterior ballistic properties of spin-stabilized bullets by optimizing their internal mass distributions. Specifically, the properties of interest are the bullets’ stability characteristics that are examined through dynamic and gyroscopic stability *** analytical expressions for aerodynamic quantities are also derived to address the compressibility of air. These expressions are utilized in a bullet model that enables efficient computation of the stability parameters for a given mass distribution. The bullet model is used in the formulation of nonlinear optimization problems that provide optimal mass distributions with respect to given goals, i.e., desired stability characteristics. The bullet types investigated in this paper are a long range bullet and a limited range training bullet. In the optimization of the mass distribution of the long range bullet, the goal is that the bullet stays stable for as long as possible. The mass distribution of the training bullet is optimized such that the bullet is stable at launch but becomes unstable shortly afterwards. The global optimal solutions obtained with the new approach fulfill the desired stability characteristics better than currently used uniformly filled bullets. Overall, the optimization approach reveals a new goal focused philosophy for bullet design compared to current trial and error design practices.

关键词： Aerodynamics Bullet Exterior ballistics Mass properties Optimization Stability

Dynamic ModeⅡfracture behavior of rocks under hydrostatic pressure using the short core in compression(SCC)method

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International Journal of Mining Science and Technology 2021年第5期31卷 927-937页

作者： Wei Yao Ying XuChonglang Wang Kaiwen Xia mikko Hokka State Key Laboratory of Hydraulic Engineering Simulation and Safety School of Civil EngineeringTianjin UniversityTianjin 300072China State Key Laboratory of Explosion Science and Technology Beijing Institute of TechnologyBeijing 100081China Engineering Materials Science Faculty of Engineering and Natural SciencesTampere University(TAU)POB 589FI-33014 TampereFinland Department of Civil&Mineral Engineering University of TorontoTorontoON M5S 1A4Canada

The shear failure of rocks under both a static triaxial stress and a dynamic disturbance is common in deep underground engineering and it is therefore essential for the design of underground engineering to quantitively estimate the dynamic ModeⅡfracture toughness KⅡCof rocks under a triaxial stress ***,the method for determining the dynamic KⅡCof rocks under a triaxial stress has not been developed *** an optimal sample preparation,the short core in compression(SCC)method was designed and verified in this study to measure the dynamic KⅡCof Fangshan marble(FM)subjected to different hydrostatic pressures through a triaxial dynamic testing *** formula for calculating the dynamic KⅡCof the rock SCC specimen under hydrostatic pressures was obtained by using the finite element method in combination with secondary *** experimental results indicate that the failure mode of the rock SCC specimen under a hydrostatic pressure is the shear fracture and the KⅡCof FM increases as the loading *** addition,at a given loading rate the dynamic rock KⅡCis barely affected by hydrostatic *** important observation is that the dynamic fracture energy of FM enhances with loading rates and hydrostatic pressures.

关键词： Loading rate Finite element method ModeⅡfracture toughness Fangshan marble Hydrostatic pressure Short core in compression

A GIS-based method for the selection of the location of residence

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Geo-Spatial Information Science 2012年第1期15卷 61-66页

作者： Xavier ALBACETE Kari PASANEN mikko KOLEHMAINEN Department of Environmental Science Research Group of Environmental InformaticsUniversity of Eastern FinlandYliopistoranta 1 EP.O.Box 162770211 KuopioFinland

Homebuyers are usually interested in both the accessibility of services and the quality of the local environment,and real estate agents frequently offer some web-based systems for home *** is however hardly any information about the quality of local living environment in those web-based *** purpose of this study was to develop a method for homebuyers,adaptable to the environmental variables of interest to homebuyers when selecting a home *** this paper,a multicriteria spatial analysis method is proposed and demonstrated for the homebuyers’selection process,using data from the City of Kuopio,*** spatial variables are applied,including environmental and service factors in the home searching process.A geographical information system(GIS)is used for creating maps for decision variables and mapping suitable *** method for ranking alternative dwellings is based on the difference between levels of the decision variables for each dwelling and the target levels given by the *** method presented in this paper is adaptable to other geographical and social *** decision analysis tool will be useful for both customers and real estate agents,and can also be used for city planning as a participatory-GIS(P-GIS)*** introduces new possibilities in the home selection *** availability of spatial data on the living environment in the webbased services for homebuyers is likely to have effects on customers’requirements and house markets,and also promote better spatial city organization in the long run.

关键词： home selection real estate market living environment GIS

Tensor Tomography: Progress and Challenges

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Chinese Annals of Mathematics,Series B 2014年第3期35卷 399-428页

作者： Gabriel P. PATERNAIN mikko SALO Gunther UHLMANN Department of Pure Mathematics and Mathematical Statistics University of Cambridge Department of Mathematics and Statistics University of Jyvskyl Department of Mathematics University of Washington and University of HelsinkiBox 354350 Seattle Washington 98195-4350 USA

The authors survey recent progress in the problem of recovering a tensor field from its integrals along geodesics. Several open problems are also proposed.

关键词： Inverse problem Integral geometry Tensor tomography

Activation of microbial secondary metabolic pathways:Avenues and challenges

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Synthetic and Systems Biotechnology 2018年第3期3卷 163-178页

作者： Bikash Baral Amir Akhgari mikko Metsä-Ketelä Department of Biochemistry University of TurkuFIN-20014TurkuFinland

Microbial natural products are a tremendous source of new bioactive chemical entities for drug *** generation sequencing has revealed an unprecedented genomic potential for production of secondary metabolites by diverse micro-organisms found in the environment and in the *** mining has further led to the discovery of numerous uncharacterized‘cryptic’metabolic pathways in the classical producers of natural products such as Actinobacteria and *** biosynthetic gene clusters may code for improved biologically active metabolites,but harnessing the full genetic potential has been hindered by the observation that many of the pathways are‘silent’under laboratory *** we provide an overview of the various biotechnological methodologies,which can be divided to pleiotropic,biosynthetic gene cluster specific,and targeted genome-wide approaches that have been developed for the awakening of microbial secondary metabolic pathways.

关键词： Biosynthesis Chemical diversity Genome mining Metabolic engineering Synthetic biology