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Copper-hydride nanoclusters with enhanced stability by N- heterocyclic carbenes

Nano Research 2021年第9期14卷 3303-3308页

作者： Hui Shen Lingzheng Wang Omar Lopez-Estrada Chengyi Hu Qingyuan Wu Dongxu Cao Sami Malola Boon KTeo hannu hakkinen Nanfeng Zheng State Key Laboratory for Physical Chemistry of Solid Surfaces Collaborative Innovation Center of Chemistry for Energy MaterialsNational&Local Joint Engineering Research Center of Preparation Technology of NanomaterialsCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China Departments of Physics and Chemistry Nanoscience CenterUniversity ofjyvdskyldFI-40014 JyvdskyldFinland

Copper-hydrides have been intensively studied for a long time due to their utilization in a variety of technologically important chemical ***,poor stability of the species severely hinders its isolation,storage and operation,which is worse for nano-sized *** report here an unprecedented strategy to access to ultrastable copper-hydride nanoclusters(NCs),namely,using bidentate N-heterocyclic carbenes as stabilizing ligands in addition to *** this work,a simple synthetic protocol was developed to synthesize the first large copper-hydride nanoclusters(NCs)stabilized by N-heterocyclic carbenes(NHCs).The NC,with the formula of Cu3i(RS)25(NHC)3H6(NHC=1,4-bis(1-benzyl-1 H-benzimidazol-1-ium-3-yl)butane,RS=4-fluorothiophenol),was fully characterized by high resolution Fourier transform ion cyclotron resonance mass spectrum,nuclear magnetic resonance,ultra-violet visible spectroscopy,density functional theory(DFT)calculations and single-crystal X-ray ***,the title cluster exhibits unprecedented Cu4 tetrahedron-based vertex-sharing(TBVS)superstructure(fusion of six Cu4 tetrahedra).Moreover,the ultrahigh thermal stability renders the cluster a model system to highlight the power of NHCs(even other carbenes)in controlling geometrical,electronic and surface structure of polyhydrido copper clusters.

关键词： metal clusters copper-hydride N-hetercxylic carbene stability superatom

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Extension of the theory of adherence to treatment in patients with coronary heart disease

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Chronic Diseases and Translational Medicine 2024年第3期10卷 227-237页

作者： Outi Kähkönen hannu Vähänikkilä Leila Paukkonen Anne Oikarinen Department of Nursing Science University of Eastern FinlandKuopioFinland Northern Finland Birth Cohorts Arctic BiobankInfrastructure for Population StudiesFaculty of MedicineUniversity of OuluOuluFinland Reseach Unit of Health Sciences and Technology Faculty of MedicineUniversity of OuluOuluFinland Medical Research Center Oulu(MRC Oulu) Faculty of medicineUniversity of OuluOuluFinland

Background: Increased knowledge of the concept of adherence is needed for development patient-centered care, nursing interventions, and guidelines for patients with coronary heart disease (CHD). The aim of this study was to test and extend the Theory of Adherence to Treatment regarding informational support in patients with ***: The study utilized an explanatory and descriptive survey. The study was conducted in 2013 and involved 416 patients in five hospitals in Finland. The Adherence of Patients with Chronic Disease instrument and the Social Support for People with CHD instrument were used. The model was tested using structural equation modeling (SEM).Results: SEM confirmed direct associations between motivation (β = 0.49,p < 0.001) and results of care (β = 0.29,p < 0.01), and indirect associations between sense of normality, fear of complications, support from nurses and next of kin, and informational support to adherence to a healthy lifestyle and medication. Informational support included information and advice on CHD risk factors, physical exercise, chest pain, medication, continuum of care, and rehabilitation. Indirect standardized path coefficients varied between 0.14 and 0.45. The model explained 45% of adherence to a healthy lifestyle and ***: The results of this study showed that informational support is a justified extension to the original Theory of Adherence to Treatment in Patients with CHD. Informational support seems to offer a new perspective that can be used to develop patient-centered nursing interventions and thus support adherence to treatment by patients with a lifelong disease such as CHD.

关键词： adherence to treatment cardiovascular nursing Nursing theory

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基于树莓派的宠物机械手

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无线电 2024年第7期 6-13页

作者： [马尔代夫]hannu 李丽英(翻译) 不详

我从经典电影《亚当斯一家》中亚当斯家族的机械手得到启发,用树莓派还原了这只在电影里无所不能的机械手。在这部电影里,这只机械手名字叫“东西”,是亚当斯一家不可或缺的一员,它在剧里还会做许多违背重力的家务。这个荧幕形象后来出... 详细信息

我从经典电影《亚当斯一家》中亚当斯家族的机械手得到启发,用树莓派还原了这只在电影里无所不能的机械手。在这部电影里,这只机械手名字叫“东西”,是亚当斯一家不可或缺的一员,它在剧里还会做许多违背重力的家务。这个荧幕形象后来出现在了电视剧《星期三》中,我制作的版本,也更类似这个版本。这个作品的机械构造复杂,给我带来了许多挑战和乐趣。如果你决定在万圣节装扮成亚当斯一家,或者让这只机械手迎接来你家玩“不给糖就捣蛋”的孩子们,那么它会是一个完美角色。

关键词：机械手树莓派万圣节亚当斯经典电影角色荧幕形象版本

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赫尔辛基舞蹈之家

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现代装饰 2024年第2期 24-33页

作者：无 hannu Rytky(摄影) Peter Vuorenrinne(摄影) Tuomas Uusheimo(摄影) JKMM ILO 不详

赫尔辛基舞蹈之家位于始建于1940年代的船用电缆厂,赫尔辛基市政府在1990年代收购后,缓慢将其打造成艺术园区。舞蹈之家项目是由JKMM与ILO建筑事务所合作设计。在项目初期,已入驻电缆厂的文艺工作者和访客便积极参与进来,她们的反馈建... 详细信息

赫尔辛基舞蹈之家位于始建于1940年代的船用电缆厂,赫尔辛基市政府在1990年代收购后,缓慢将其打造成艺术园区。舞蹈之家项目是由JKMM与ILO建筑事务所合作设计。在项目初期,已入驻电缆厂的文艺工作者和访客便积极参与进来,她们的反馈建议起到了指导作用。在开幕已来的两年里,赫尔辛基舞蹈之家通过举办高质量的舞蹈、现代马戏和各类演出,它已成为芬兰最受关注的表演场所之一,而整个电缆厂也渐渐成为芬兰规模最大的文化中心。

关键词：建筑事务所文艺工作者赫尔辛基表演场所船用电缆马戏项目初期艺术园区

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Specialist predator in a multi-species prey community:boreal voles and weasels

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Integrative Zoology 2008年第1期3卷 51-63页

作者： Janne SUNDELL hannu YLÖNEN Metapopulation Research Group Department of Biological and Environmental SciencesUniversity of HelsinkiHelsinkiFinland Konnevesi Research Station Department of Biological and Environmental ScienceUniversity of JyväskyläJyväskyläFinland

Dissimilar vulnerabilities of different prey types and preferences of predators are factors likely to contribute to community *** may happen via differential individual properties of prey animals(***,escape)or via habitat effects making hunting by a predator easier and more rewarding in some habitats,or ***,community dynamics may be influenced by predator mediated apparent competition,in which an increase in one prey type has negative effects on another prey type indirectly via the shared *** summarize the current knowledge from the field in a model predator–prey system consisting of sympatric boreal vole species and their common specialist predator and review field studies using predator manipulation and studies on the responses of individuals in the laboratory and in outdoor *** vole species studied represent different prey types that are thought to have different *** observations on the main resident specialist predator,the least weasel(Mustela nivalis nivalis L.),show that it hunts according to prey availability and suitability of the hunting *** voles respond to the presence of the predator behaviorally in various ways to avoid *** conclude that even if the least weasel is a specialized predator of small rodents it acts like a generalist predator within the small rodent guild and may facilitate the coexistence of prey species via predator *** may lead to interspecific synchrony between prey populations,which has often been *** suggest that the processes determining the community impact of predator–prey interactions are driven by the behavioral arms race between the predator and the prey,together with the habitat-dependent density of prey and net gain for the predator.

关键词： apparent competition predator–prey interaction prey choice vole cycle

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Trade-offs between wood production and forest grouse habitats in two regions with distinctive landscapes

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Forest Ecosystems 2020年第2期7卷 274-289页

作者： Helena Haakana Esa Huhta hannu Hirvelä Tuula Packalen Natural Resources Institute Finland(Luke) PO Box 2FI-00791 HelsinkiFinland Natural Resources Institute Finland(Luke) PO Box 16FI-96301 RovaniemiFinland Natural Resources Institute Finland(Luke) PO Box 68FI-80101 JoensuuFinland.

Background:Forest management affects the viability of forest grouse populations,causing alterations to habitat *** the regional level,common targets for wood harvesting and safeguarding of specific habitats are negotiated between various *** potential trade-offs between forest grouse habitats and wood production in the region could support resource-smart decision ***:In this paper,we compiled trade-off curves represented as production possibility frontiers demonstrating the relationship between forest grouse habitat area and wood removal,using a Finnish forestry dynamics model and the Finnish Multi-Source National Forest *** the modelling of forest grouse habitats,a landscape-level occurrence model based on nationwide wildlife triangle census data was *** alternative forest scenarios in terms of wood removal were compiled for two study areas in Finland representing two different landscape *** and conclusions:Results showed that impacts on forest grouse habitats were *** the southern study area,increasing the roundwood harvesting rate affected grouse habitats more strongly as forests were already fragmented for other land uses and became more spruce-dominated over *** the maximum sustainable removal rate was implemented,predicted grouse habitat area was 55%less than in a no-removal *** the eastern study area,a more heavily forested region,the decrease was far lower at 22%.Scenario results were also compared to levels of recorded(business as usual)wood removal and that envisaged by valid regional forestry programmes,and their sustainability in terms of grouse habitat area was *** production possibility frontiers calculated in this study support the evaluation of the loss of suitable habitat caused by different wood harvesting rates,or vice versa,the economic cost of increasing habitat areas.

关键词： Forest grouse Forest landscape Habitat model Production possibilities frontier Scenario analyses Wood production

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Management strategies for aflatoxin risk mitigation in maize,dairy feeds and milk value chains-case study Kenya

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Food Quality and Safety 2021年第2期5卷 111-121页

作者： Vesa V.Joutsjoki hannu J.Korhonen Natural Resources Institute Finland(Luke) HelsinkiFinland

Widespread aflatoxin contamination of a great number of food and feed crops has important implications on global trade and health. Frequent occurrence of aflatoxin in maize and milk poses serious health risks to consumers because these commodities are staple foods in many African countries. This situation calls for development and implementation of rigorous aflatoxin control measures that encompass all value chains, focusing on farms where food and feed-based commodities prone to aflatoxin contamination are cultivated. Good agricultural practices (GAP) have proven to be an effective technology in mitigation and management of the aflatoxin risk under farm *** prevailing global climate change is shown to increase aflatoxin risk in tropical and subtropical ***, there is an urgent need to devise and apply novel methods to complement GAP and mitigate aflatoxin contamination in the feed, maize and milk value chains. Also, creation of awareness on aflatoxin management through training of farmers and other stakeholders and enforcement of regular surveillance of aflatoxin in food and feed chains are recommended strategies. This literature review addresses the current situation of aflatoxin occurrence in maize, dairy feeds and milk produced and traded in Kenya and current technologies applied to aflatoxin management at the farm level. Finally, a case study in Kenya on successful application of GAP for mitigation of aflatoxin risk at small-scale farms will be reviewed.

关键词： Aflatoxins contamination maize milk feed management strategies

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Multi-scale study of ductility-dip cracking in nickel-based alloy dissimilar metal weld

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Journal of Materials Science & Technology 2019年第4期35卷 545-559页

作者： Yifeng Li Jianqiu Wang En-Hou Han Wenbo Wu hannu Hanninen Key Laboratory of Nuclear Materials and Safety Assessment Institute of Metal ResearchChinese Academy of Sciences School of Materials Science and Engineering University of Science and Technology of China Department of Mechanical Engineering Aalto University

A ductility-dip-cracking(DDC)-concentrated zone(DCZ) in a width of about 3 mm was observed adjacent to the AISI 316 L/52 Mw fusion boundary(FB) in 52 Mw. The morphology, microstructure, mechanical and thermal properties and corrosion behavior in simulated primary water of DDC/DCZ were investigated by scanning electron microscopy(SEM), transmission electron microscopy(TEM), 3 D X-ray tomography(XRT), 3 D atom probe(3 DAP), slow strain rate tensile(SSRT) testing and thermal dilatometry. The results indicate that DDCs are random-shaped and disc-like cavities with corrugated structure of inner surface and are parallel in groups along straight high-angle boundaries of columnar grains, ranging from micrometers to millimeters in size. Large-size M_(23)C_6 carbides dominate on the grain boundaries rather than MC(M=Nb, Ti), and thus the bonding effect of carbides is absent for the straight grain *** impurity segregation of O is confirmed for the inner surfaces of DDC. The oxide film formed on the inner surface of DDC(about 50 nm) is approximately twice as thick as that on the matrix(about 25 nm)in simulated primary water. The yield strength, tensile strength and elongation to fracture of 52 MwDCZ(400 MPa, 450 MPa and 20 %, respectively) are lower than those of 52 Mw-MZ(460 MPa, 550 MPa and 28 %, respectively). The intrinsic high-restraint weld structure, the additional stress/strain caused by the thermal expansion difference between AISI 316 L and 52 Mw as well as the detrimental carbide precipitation and the resulting grain boundary structure all add up to cause the occurrence of DCZ in the dissimilar metal weld.

关键词： Dissimilar metal weld Nickel-base alloy Ductility-dip cracking(DDC) Slow strain rate tensile(SSRT) testing Thermal expansion coefficient

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Probiotics and gut health:A special focus on liver diseases

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World Journal of Gastroenterology 2010年第4期16卷 403-410页

作者： Silvia Wilson Gratz hannu Mykkanen Hani S El-Nezami Rowett Institute of Nutrition and Health University of Aberdeen Greenburn Road Aberdeen AB21 9SNUnited Kingdom School of Public Health and Clinical Nutrition University of KuopioPO Box 162770211 KuopioFinland Food and Health Research Centre University of KuopioPO Box 162770211 KuopioFinland School of Biological Sciences University of Hong KongS5-13 Kadoorie Biological Sciences BuildingPokfulamHong KongChina

Probiotic bacteria have well-established beneficial ef-fects in the management of diarrhoeal *** evidence suggests that probiotics have the potential to reduce the risk of developing inflammatory bowel diseases and intestinal bacterial overgrowth after gut *** liver health,the main benefits of probiotics might occur through preventing the production and/or uptake of lipopolysaccharides in the gut,and therefore reducing levels of low-grade *** immune stimulation by probiotics through processes involving dendritic cells might also be beneficial to the host immunological status and help prevent pathogen *** fat metabolism also seems to be influenced by the presence of commensal bacteria,and potentially by probiotics;although the mechanisms by which probiotic might act on the liver are still ***,this might be of major importance in the fu-ture because low-grade inflammation,hepatic fat infil-tration,and hepatitis might become more prevalent as a result of high fat intake and the increased prevalence of obesity.

关键词： Probiotics Liver Gut Endotoxin Barrier function Ethanol Bacterial overgrowth Translocation

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Voles and weasels in the boreal Fennoscandian small mammal community:what happens if the least weasel disappears due to climate change?

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Integrative Zoology 2019年第4期14卷 327-340页

作者： hannu YLÖNEN Marko HAAPAKOSKI Thorbjörn SIEVERT Janne SUNDELL Department of Biological and Environmental Science and Konnevesi Research Station University of JyväskyläJyväskyläFinland Lammi Biological Station University of HelsinkiLammiFinland

Climate change,habitat loss and fragmentation are major threats for populations and a challenge for individual behavior,interactions and ***-prey interactions are modified by climate *** the northern latitudes,strong seasonality is changing and the main predicted feature is shortening and instability of win*** populations in the boreal Fennoscandia exhibit multiannual *** amplitude peak numbers of voles and dramatic population lows alternate in 3-5-year cycles shortening from North to *** key factor,or driver,promoting the population crash and causing extreme extended lows,is suggested to be predation by the least *** review the arms race between prey voles and weasels through the multiannual density fluctuation,affected by climate change,and especially the changes in the duration and stability of snow *** ground-dwelling small mammals,snow provides thermoregulation and shelter for nest sites,and helps them hide from *** increases in the instability of winter forms a major challenge for species with coat color change between brown summer camouflage and white winter *** of these is the least weasel,Mustela nivalis *** vulnerability of wrong-colored weasels to predation affects vole populations and may have dramatic effects on vole *** may have cascading effects on other small rodent-predator interactions and even on plant-animal interactions and forest dynamics.

关键词： cascading effects climate change least weasel population cycles predator-prey

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