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Improving Winter Traction and Fuel Economy of Car Tires Using Naphthenic Tire Oils

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Journal of Traffic and Transportation Engineering 2018年第1期6卷 35-41页

作者： Mika Lahtinen Kamyar Alavi patrik Salomonsson Markus Hoffmann Herbert Fruhmann NYNASO Y Ayritie 12B 01510 Vantaa Finland NYNASAB P.O. Box 10700 121 79 Stockholm Sweden

Naphthenic tire oils were used in winter tire tread compounding. Properties of compounds were compared with similar compounds made of other safe tire oils. Retreaded passenger car winter tires were prepared using the compounds. Traction and rolling resistance of the tires were determined in different weather *** was shown that naphthenie oils may lead to improvement of winter traction and rolling resistance without compromising other tire properties.

关键词： Naphthenic oil winter tire snow traction ice traction dynamic properties rolling resistance fuel economy.

Monitoring Water Quality in Ballona Lagoon, Los Angeles, California: Nitrate Level Fluctuation in Low and High Tide Condition

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Journal of Water Resource and Protection 2023年第7期15卷 333-345页

作者： Mohammad Hassan Rezaie-Boroon Georgina Campos Marleni Estrada patrik Kwan Daniel Venegas Geography Geology and Environment Department California State University Los Angeles California USA

The coastal wetland, Ballona Lagoon in Southern California has experienced degradation and size reduction due to urbanization. This study analyzes nitrate concentrations in the lagoon to identify contamination sources and assess its impact. The study includes determining nitrate levels during high and low tides during wet and dry seasons, establishing concentration gradients, and examining the relationship between salinity and nitrate concentrations. The nitrate concentrations were found to be higher in locations closer to the head of the lagoon, particularly in urbanized areas, suggesting land-based sources during the dry season’s high tide (S2: 2.37 mg/l;S3: 3.85 mg/l;S4: 3.91 mg/l). Findings highlight the importance of managing nitrate contamination near urban areas. Monitoring nitrate levels over time are crucial for sustainability efforts. This research emphasizes the need for long-term monitoring and conservation strategies to mitigate nitrate contamination in Ballona Lagoon.

关键词： Ballona Lagoon Urbanization Nitrate Contamination Nitrification

Cardiovascular disease and COVID-19,a deadly combination:A review about direct and indirect impact of a pandemic

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World Journal of Clinical Cases 2022年第27期10卷 9556-9572页

作者： Rafael Vidal-Perez Mariana Brandão Michal Pazdernik Karl-patrik Kresoja Myriam Carpenito Shingo Maeda Rubén Casado-Arroyo Saverio Muscoli Janine Poss Ricardo Fontes-Carvalho Jose Manuel Vazquez-Rodriguez Servicio de Cardiología Unidad de Imagen y Función CardíacaComplexo Hospitalario Universitario A Coruña Centro de Investigación Biomédica en Red-Instituto de Salud Carlos ⅢA Coruña 15006Spain Department of Cardiology Centro Hospitalar de GaiaGaia 4400-020Portugal Intensive Care Unit Department of CardiologyInstitute for Clinical and Experimental Medicine PraguePrague 14021Czech Republic Heart Center Leipzig University of LeipzigLeipzig 04289Germany Unit of Cardiac Sciences Department of MedicineCampus Bio-Medico University of RomeRome 00128Italy Arrhythmia Advanced Therapy Center AOI Universal HospitalKawasaki 210-0822Japan Department of Cardiology Hôpital ErasmeUniversitéLibre de BruxellesBrussels 1070Belgium Unit of Cardiology Policlinico Tor VergataRome 00133Italy Department of Surgery and Physiology Faculty of Medicine of the University of PortoPorto 4200-319Portugal

Coronavirus disease 2019(COVID-19) is known to present with respiratory symptoms,which can lead to severe pneumonia and respiratory ***,it can have multisystem complications such as cardiovascular *** cardiovascular manifestations reported comprise myocarditis,cardiogenic shock,arrhythmias,pulmonary embolism,deep vein embolism,acute heart failure,and myocardial *** is also an indirect impact of the pandemic on the management of cardiovascular care that has been shown clearly in multiple *** this review,we summarize the deadly relation of COVID-19 with cardiovascular events and the wider impact on several cardiovascular care areas by the pandemic situation。

关键词： COVID-19 Cardiovascular diseases Pandemic Heart failure Telemedicine Prognosis

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她改变了我在水中的体验

体育博览 2015年第9期 32-33页

作者： patrik

张婕作为我的游泳教练已经将近一年的时间了。在张婕之前的5年时间里,我有两个不同的泳教。尽管在之前的教练教授过程中,我觉得我的游泳水平有缓慢的提升,但我觉得在一些基础的部分仍有欠缺。我认为游泳是训练的结果,然而在游泳后,我也... 详细信息

张婕作为我的游泳教练已经将近一年的时间了。在张婕之前的5年时间里,我有两个不同的泳教。尽管在之前的教练教授过程中,我觉得我的游泳水平有缓慢的提升,但我觉得在一些基础的部分仍有欠缺。我认为游泳是训练的结果,然而在游泳后,我也时常的会感觉肩部与上肢很痛。在过去的12月,在张婕的指导下,我从根本上改变了自己在游泳中的一些不足。在那段时间里,她完全改变了我在水中活动的方式,从头部的姿势开始,到划手的姿势,然后到蹬腿的姿势,这

关键词：张婕蛙泳游泳

Synthesis,Characterizations and in Vitro Assessment of the Cytotoxicity and Genotoxicity of Novel Silicon Nitride-Based Porous Ceramics

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Materials Sciences and Applications 2013年第7期4卷 407-418页

作者： Miroslav Hnatko Zoltán Lences Peter Copan Lucia Birosová patrik Matejov Sona Jantová Department of Ceramic Institute of Inorganic ChemistrySlovak Academy of SciencesBratislavaSlovakia Institute of Inorganic Chemistry Technology and MaterialsFaculty of Chemical and Food TechnologySlovak University of TechnologyBratislavaSlovakia Institute of Biochemistry Nutrition and Health ProtectionFaculty of Chemical and Food TechnologySlovak University of TechnologyBratislavaSlovakia

Porous Si3N4-SiO2-based ceramics with different porosity were prepared via free sintering of Si3N4 on air with an addition of semolina (5, 10 and 20 wt%) as a pore-forming agent. The semolina content in the starting powder controlled the volume fraction of pores in the sintered body. Small pores (5 μm) formed a continuous network in the whole volume of the ceramic material, while the large pores (~100 μm), formed from the added semolina were mostly isolated in the ceramic matrix. Mercury porosimetry and strength measurements have shown that specific surface area, volume density and compressive strength decreased with the amount of semolina in the samples. Mechanical properties similar to bone were obtained for the sample with 20 wt% semolina pore forming agent (compressive strength 350 MPa, density 2.17 ***-3). The prepared Si3N4-SiO2-based ceramics were evaluated for cytotoxic and genotoxic potential on human fibroblast VH10 and B-HNF-1 cells. Biological tests have shown that both these human fibroblast cell lines were sensitive to the samples with lower porosity and cell growth inhibition was observed in the range 14.9% - 21.3%. The cytotoxicity of the sample with the highest porosity (~40%) was not significant (10%). The microscopic observations have shown that VH10 and B-HNF-1 cells growing around the silicon nitride ceramic discs were homogeneously distributed on the cultivation surface. No significant morphologic changes were found in treated cells, their morphology was very similar to that of the control cells. None of the tested Si3N4-based ceramic samples induced necrotic/apoptotic death of human fibroblasts. Sample S-20 had similar properties to bones and was characterized by very good biocompatibility, slight cytotoxicity and none genotoxicity. Therefore, Si3N4-SiO2-based ceramics prepared by free sintering on air are potential biomaterials for medical applications.

关键词： Silicon Nitride Sintering Porosity Mechanical Properties Cytotoxicity/Genotoxicity Human Cell Lines

An imaging spectrometer employing tunable hyperchromatic microlenses

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Light(Science & Applications) 2015年第1期4卷 33-41页

作者： Phuong-Ha Cu-Nguyen Adrian Grewe patrik Feßer Andreas Seifert Stefan Sinzinger Hans Zappe Gisela and Erwin Sick Chair of Micro-optics Department of Microsystems EngineeringUniversity of FreiburgFreiburg 79110Germany Fachgebiet Technische Optik Institut fur Mikro-und NanotechnologienTechnische Universitat IlmenauIlmenau 98684Germany

We present the design,fabrication and characterization of hydraulically-tunable hyperchromatic lenses for two-dimensional(2D)spectrally-resolved spectral *** hyperchromatic lenses,consisting of a positive diffractive lens and a tunable concave lens,are designed to have a large longitudinal chromatic dispersion and the images of different wavelengths from each other.2D objects of different wavelengths can consequently be imaged using the tunability of the lens *** hyperchromatic lens concepts are demonstrated and their spectral characteristics as well as their functionality in spectral imaging applications are shown.

关键词： hyperchromatic lens imaging spectrometer tunable filter tunable lens

In-situ characterization of metal nanoparticles and their organic coatings using laser-vaporization aerosol mass spectrometry

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Nano Research 2015年第12期8卷 3780-3795页

作者： patrik T. Nilsson Axel C. Eriksson Linus Ludvigsson Maria E. Messing Erik Z. Nordin Anders Gudmundsson Bengt O. Meuller Knut Deppert Edward C. Fortner Timothy B. Onasch Joakim H. Pagels Ergonomics and Aerosol Technology Lund University P.O. Box 118 Lund SE-22100 Sweden Nuclear Physics Lund University P.O. Box 118 LundSE-22100 Sweden Solid State Physics Lund University P.O. Box 118 Lund SE-22100 Sweden Synchrotron Radiation Research Lund University P.O. Box 118 Lund SE-22100 Sweden Aerodyne Research Inc. Billefica MA 01821-3976 USA

The development of methods to produce nanoparticles with unique properties via the aerosol route is progressing rapidly. Typical characterization techniques extract particles from the synthesis process for subsequent offiine analysis, which may alter the particle characteristics. In this work, we use laser-vaporization aerosol mass spectrometry （LV-AMS） with 70-eV electron ionization for real-time, in-situ nanoparticle characterization. The particle characteristics are examined for various aerosol synthesis methods, degrees of sintering, and for controlled condensation of organic material to simulate surface coating/functionalization. The LV-AMS is used to characterize several types of metal nanoparticles （Ag, Au, Pd, PdAg, Fe, Ni, and Cu）. The degree of oxidation of the Fe and Ni nanoparticles is found to increase with increased sintering temperature, while the surface organic-impurity content of the metal particles decreases with increased sintering temperature. For aggregate metal particles, the organic-impurity content is found to be similar to that of a monolayer. By comparing different equivalent-diameter measurements, we demonstrate that the LV-AMS can be used in tandem with a differential mobility analyzer to determine the compactness of synthesized metal particles, both during sintering and during material addition for surface functionalization. Further, materials supplied to the particle production line downstream of the particle generators are found to reach the generators as contaminants. The capacity for such in-situ observations is important, as it facilitates rapid response to undesired behavior within the particle production process. This study demonstrates the utility of real-time, in-situ aerosol mass spectrometric measurements to characterize metal nanoparticles obtained directly from the synthesis process line, including their chemical composition, shape, and contamination, providing the potential for effective optimization of process operating p

关键词： metal aeroso1 organic surface coating contamination morphology alloy spark discharge

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梅溪湖文化中心

建筑实践 2020年第1期 126-131页

作者： Zaha Hadid patrik Schumacher 扎哈·哈迪德建筑事务所

地点:湖南省长沙市Location:Changsha, Hunan Province长沙梅溪湖国际文化艺术中心由扎哈·哈迪德建筑事务所设计建造,包含一个当代艺术美术馆(MICA),一个可容纳1800人的大剧院及一个多功能大厅(小剧院)。以场地周边的人行流线为设计参... 详细信息

地点:湖南省长沙市Location:Changsha, Hunan Province长沙梅溪湖国际文化艺术中心由扎哈·哈迪德建筑事务所设计建造,包含一个当代艺术美术馆(MICA),一个可容纳1800人的大剧院及一个多功能大厅(小剧院)。以场地周边的人行流线为设计参照,建筑群以有机的方式与附近的社区连接在一起。在为活动中心提供梅溪湖湖景的同时,建筑师还为市民提供了前往湖中岛与公园的快速路径。市民既可以感受文化中心内部三个庭院的氛围,也可以在欣赏雕塑展的同时参与户外活动。为了满足多种演出类型的需求,大剧院包含全面的服务功能,囊括了前厅、吧台、接待室、行政办公室、排练

关键词：文化艺术中心文化中心平面图梅溪湖

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塞克勒蛇形画廊

建筑创作 2016年第6期 226-267页

作者： Zaha Hadid patrik Schumacher Zaha Hadid Architects

公共美术馆改造的关键在于决策：将这座军火库的历史布局复原成围台空间中的独立场馆。并给之前的内庭院加盖屋顶,使其成为室内展览空间。为了展示原来建筑的中心空间,之前弹药库中所有的非历史隔墙都被拆除。入口上方的扁形拱得到复原... 详细信息

公共美术馆改造的关键在于决策：将这座军火库的历史布局复原成围台空间中的独立场馆。并给之前的内庭院加盖屋顶,使其成为室内展览空间。为了展示原来建筑的中心空间,之前弹药库中所有的非历史隔墙都被拆除。入口上方的扁形拱得到复原,具有历史意义的木结构起吊架也得以保留。必要的设备和照明设施都被小心地整合,避免干扰各空间的＂原状＂特征。这些拱顶现在成为画廊空间序列的一部分。

关键词：展览空间空间序列克勒扁形中心空间总平面 articulate interior 围合空间 gallery