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Nature-based recreation for the elderly in urban areas:assessing opportunities and demand as planning support

Ecological Processes 2022年第1期11卷 587-603页

作者： Chen Wen christian Albert Christina von Haaren School of Architecture and Urban Planning Huazhong University of Science and TechnologyLuoyu Road430074 WuhanChina Institute of Environmental Planning Leibniz University HannoverHannoverGermany Institute of Geography Ruhr University BochumBochumGermany

Background:With elderly people comprising a growing share of the population,landscape planners need to consider their specific requirements to enhance the opportunities for them to engage in nature-based recreation(NBR).However,few studies have spatially assessed the recreation potential,demand,and opportunities for elderly people in ***,this paper aimed to spatially model and investigate the NBR opportunities for and demand of elderly people in urban areas.A spatial framework based on the ESTIMAP recreation model was developed,considering special factors to better reflect elderly people’s preferences regarding NBR at the city *** particular,NBR opportunities were assessed considering landscape aesthetics,various types of facilities,and *** street network was used to understand elderly people’s walking behaviours regarding green spaces and related ***:A case study in Hannover,Germany,demonstrated the applicability of the proposed *** results illustrate the spatial heterogeneity of recreation options for the *** parts of Hannover’s green spaces offer high recreation opportunities for elderly *** of the existing green spaces lack diverse landscape compo-nents and sufficient supply of facilities,resulting in a compromise to aesthetics and recreational ***:The proposed method contributes to research on spatial planning and environmental justice by incorporating vulnerable groups’preferences and needs in spatially assessing *** planning implications highlight pocket gardens and greenways connecting communities and parks as development opportunities in the city.

关键词： Sustainability Nature-based recreation Population aging Landscape architecture GIS mapping Urban design

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Sedimentation acceleration of remanent iron oxide by magnetic flocculation

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China Particuology 2007年第1期5卷 145-150页

作者： Mathias Stolarski christian Eichholz Benjamin Fuchs Hermann Nirschl Institute of Mechanical Process Engineering and Mechanics (MVM) University of Karlsruhe 76131 Karlsruhe Germany DuPont Experimental Station Building E304 Wilmington DE 19880 USA

Sedimentation based processes are widely used in industry to separate particles from a liquid phase. Since the advent of the ＂Nanoworld＂ the demand for effective separation technologies has rapidly risen, calling for the development of new separation concepts, one of which lies in hybrid separation using the superposition of a magnetic field for magnetic particles. Possible product portfolio of such separation consists of pigment production, nanomagnetics production for electronics and bio separation, A promising step in that direction is magnetic field enhanced cake filtration, which has by now progressed from batch to continuous ooeration. In sedimentation processes in a mass force field the settling behaviour of particles strongly depends on physico-chemical properties, concentration and size distribution of the particles. By adjusting the pH, the interparticle forces, in particular the electrostatic repulsion, can be manipulated. For remanent magnetic particles such as magnetite, pre-treatment in a magnetic field could lead to a change of interparticle interactions. By magnetizing the particles apart from van der Waals attraction and electrostatic repulsion, an additional potential is induced, the magnetic attraction, which could easily dominate the other potentials and result in agglomeration in the primary minimum. By sedimentation analysis, a wide spectrum of parameters like pH, magnetic field strength and concentration have been investigated. The results show a strong increase of sedimentation velocity by magnetic flocculation of the raw suspension. This leads to a rise in throughput due to the acceleration of sedimentation kinetics by imparting a non-chemical interaction to the physico-chemical properties in the feed stream of the separation apparatus.

关键词： Magnetic flocculation Field enhanced separation Cake filtration Magnetic structuring Magnetic separation

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Flexofytol^(■) (A Belgian Curcumin Extract)for the Treatment of Aged Patients with Osteoarthritis and Comorbidity

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Open Journal of Rheumatology and Autoimmune Diseases 2017年第4期7卷 167-177页

作者： Sandra De Breucker Héloise Rouvière christian Mélot Thierry Appelboom Geriatrics Department Hopital ErasmeUniversité Libre de BruxellesBrusselsBelgium Emergency Department Hopital ErasmeUniversité Libre de BruxellesBrusselsBelgium Rheumatology Department Hôpital ErasmeUniversitéLibre de BruxellesBrusselsBelgium

Introduction: Currently, the therapeutic arsenal of osteoarthritis includes several extracts of Curcuma including Flexofytol®, a bio-optimized extract of Curcuma longa. However, in older patients, indications for treatment might be limited by comorbidity and polymedication. Therefore, we aimed to assess the benefits and risks of Flexofytol®, in an older population with comorbidities. Patients and Methods: This retrospective observational study included 31 patients over age 70 years (medianage: 77 years, range 71 - 81) that were treated with Flexofytol for painful osteoarthritis of the knee or lumbar spine. These patients were initially weakened by diabetes (48%) and/or renal insufficiency (71%), or they were taking anticoagulants (35%). The effects of Flexofytol®, were evaluated at 0, 6 and 12 weeks with visual analog scales for pain and disability and the SF-12 Quality of Life questionnaire. Adverse effects and drug interactions of Flexofytol®, were evaluated. In particular, we evaluated renal function, diabetes parameters and coagulation tests. The data were analyzed with Kruskal-Wallis and Wilcoxon-Mann-Withney non-parametric tests. results: Patients with Flexofytol®, showed significant improvement: pain improved by 50% (p = 0.0002) and functional disability improved by 33% (p = 0.0075). A series of quality of life parameters improved within the first 6 weeks of treatment and up to 3 months of treatment without impacting renal function, metabolic parameters or coagulation tests. We observed no significant adverse effects. Conclusion: In conclusion, our results suggested that Flexofytol®, may be useful in the management of painful osteoarthritis, particularly in older patients that are fragile due to comorbidity and polymedication. These initial results must be confirmed in future studies.

关键词： Lumbar Arthrosis Knee Osteoarthritis Curcumin Flexofytol^(■) Geriatrics

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Clustering of voltage-gated ion channels as an evolutionary trigger of myelin formation

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Neural regeneration research 2024年第8期19卷 1631-1632页

作者： Henrike Ohm Simone rey christian Klambt Institut fur Neuro-und Verhaltensbiologie MunsterGermany

Neurons carry apical dendrites that perceive information and a basal axon that transmits the computed information towards its to *** axon originates at the axon hillock which is followed by the axon initial ***,action potentials are initiated that are based on millisecond long openings of specific voltagegated sodium and potassium channels that are conserved in all parahoxozoa(Placozoa,Cnidaria,Bilateria)(Li et al.,2015).

关键词： initiated carry potassium

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Early dynamics in plant community trait responses to a novel, more extreme hydrological gradient

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Journal of Plant Ecology 2019年第2期12卷 327-335页

作者： Andrea Oddershede Cyrille Violle Annette Baattrup-Pedersen Jens-christian Svenning christian Damgaard Section for Plant and Insect Ecology Department of BioscienceAarhus UniversityVejlsøvej 25DK-8600 SilkeborgDenmark Section for Ecoinformatics&Biodiversity Department of BioscienceAarhus UniversityNy Munkegade 114DK-8000 Aarhus CDenmark CEFE UMR 5175 CNRS-Universitéde Montpellier-UniversitéPaul-Valéry MontpellierEPHE-1919 route de MendeF-34293 MontpellierCEDEX 5France Section for Stream and Wetland Ecology Department of BioscienceAarhus UniversityVejlsøvej 25DK-8600 SilkeborgDenmark

Aims For temperate regions such as Northern Europe,predicted climate change patterns include an increase in winter precipitation causing increased risk of flooding,whereas periods of droughts will become more frequent in *** aim of this study is to explore vari-ations in plant functional trait distributions along a hydrological gradient spanning from recurrent drought events to recurrent flood-ing-mimicking future precipitation *** The experiment was conducted in a controlled grassland experi-ment over a period of 3 years.A novel and more extreme hydro-logical regime was achieved by manipulating the flow of a nearby stream thereby creating a continuous hydrological gradient from flooding during winter to drought during *** commu-nity responses were recorded along this hydrological ***-weighted trait distribution changes along the gradient were described using null *** functional traits were con-sidered:seed mass,leaf dry matter content(LDMC),leaf area,leaf thickness,specific leaf area(SLA)and *** findings Over time,responses in plant functional traits changed at the community *** the study period consistent changes occurred in the mean trait value of several *** in relatively dry plots became dominated by species with water-conserving life strategies,represented by high seed mass and thick *** contrast,disturbance-resistant species(high leaf dry matter content)became dominant in flooded plots,indicating that persistence to flooding was the most important factor control-ling the functional structure in those ***,a high abundance of small-seeded species in flooded plots likely indicates higher frequency of species with higher dispersal ability through *** conclusion,plant traits are useful for predicting responses to climate change,but abrupt and extreme climate event may cause unexpected responses because they have no analog to previously more sta

关键词： functional diversity trait-environment relationship hydrology extreme events flooding

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Tribological performance and microstructural evolution ofα-brass alloys as a function of zinc concentration

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Friction 2020年第6期8卷 1117-1136页

作者： Zhilong LIU Philipp MESSER-HANNEMANN Stephan LAUBE christian GreINER Institute for Applied Materials(IAM) Karlsruhe Institute of Technology(KIT)Karlsruhe 76131Germany KIT IAM-CMS MikroTribologie CentrumμTC Karlsruhe 76131Germany

Tailoring a material's properties for low friction and little wear in a strategic fashion is a long-standing goal of materials *** deformation plays a major role when metals are employed in a sliding contact;therefore,the effects of stacking fault energy and mode of dislocation glide need to be ***,we investigated how a decrease in the stacking fault energy affects friction,wear,and the ensuing sub-surface microstructure *** samples with increasing zinc concentrations of 5,15,and 36 wt%were tested in non-lubricated sphere-on-plate contacts with a reciprocating linear tribometer against Si3N4 *** the sliding distance from 0.5(single trace)to 5,000 reciprocating cycles covered different stages in the lifetime of a sliding *** the results among the three alloys revealed a profound effect of the zinc concentration on the tribological ***15 and CuZn36 showed similar friction and wear results,whereas CuZn5 had a roughly 60%higher friction coefficient(COF)than the other two ***15 and CuZn36 had a much smaller wear rate than *** dislocation motion in CuZn5 and CuZn15 allowed for dislocation self-organization into a horizontal line about 150 nm beneath the contact after a single trace of the *** feature was absent in CuZn36 where owing to planar dislocation slip band-like features under a 45°angle to the surface were *** results hold the promise to help guide the future development of alloys tailored for specific tribological applications.

关键词： brass tribology sliding contact microstructure stacking fault energy electron microscopy

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The effect of microclimate on wood decay is indirectly altered by tree species diversity in a litterbag study

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Journal of Plant Ecology 2017年第1期10卷 170-178页

作者： David Eichenberg Katherina Pietsch christian Meister Wenyong Ding Mingjian Yu christian Wirth Institut für Spezielle Botanik und Funktionelle Biodiversität University of LeipzigJohannisallee 21-23Leipzig 04103Germany College of Life Sciences Zhejiang University866 Yuhangtang RoadHangzhou 310058China German Centre for Integrative Biodiversity research(iDiv)Halle-Jena-Leipzig Deutscher Platz 5eLeipzig 04103Germany

Aims We studied the influence of tree species diversity on the dynamics of coarse wood decomposition in developing forest communities in a natural,topographically heterogeneous *** the litter bag technique,we investigated how and to which extent canopy tree species richness or the exclusion of mesoinvertebrates and macroinvertebrates affected wood decomposition in the light of natural variations in the *** compared the relative importance of the two aspects(experimental treatment versus microclimate)on wood decay rates using Schima superba as a standard *** Coarse woody debris(CWD)was deposited in litter bags with two different mesh sizes in a total of 134 plots along a gradient of canopy tree species richness(0-24 species).Wood decomposition was assessed at two consecutive time points,one and three years after deposition in the *** climatic conditions were assessed throughout the duration of the *** conditions were assessed both,directly in the field as well as indirectly via correlations with local *** used analysis of variance based approaches to assess the relative importance of the treatments(community tree species richness and macro invertebrate exclusion)and microclimatic conditions on wood *** Findings No direct influence of tree species richness on wood decay could be ***,the exclusion of macroinvertebrates significantly decreased wood decomposition *** addition,microclimatic conditions accounted for a substantial proportion of explained variance in the observed ***,wood decomposition was negatively affected by low mean temperatures and high variations in local humidity and ***,tree species richness as well as the respective species composition affected the presence of termites within forest ***,in turn,significantly increased the decay of *** strength of both,experimental treatment and microclimate increased with o

关键词： wood decomposition microclimate litter bag tree species diversity community composition

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RNA/DNA Ratio and LPL and MyoD mRNA Expressions in Muscle of Oreochromis niloticus Fed with Elevated Levels of Palm Oil

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Journal of Ocean University of China 2016年第1期15卷 184-192页

作者： christian Larbi AYISI ZHAO Jinliang Key Laboratory of Freshwater Fishery Germplasm resources Ministry of Agriculture Shanghai Ocean University Shanghai 201306 P. R. China L & A Aquaculture research and Training Centre P.O Box 2 Adukrom Akuapem Eastern Region Ghana

Palm oil is of great potential as one of the sustainable alternatives to fish oil(FO) in *** this present study,five isonitrogenous diets(32% crude protein) with elevated palm oil levels of 0%,2%,4%,6% and 8% were used during an 8-week feeding trial to evaluate its effects on RNA/DNA ratio and lipoprotein lipase(LPL) and Myo D m RNA expressions in muscle of Oreochromis *** results showed that RNA,DNA content as well as ratio of RNA to DNA were significantly affected(P recorded in fish group subjected to 6% palm oil *** was a strong positive correlation between nucleic acid concentration(RNA concentration and RNA:DNA ratio) and specific growth rate(SGR),protein efficiency ratio(PER),while a negative correlation existed between nucleic acid concentration(RNA concentration and RNA:DNA ratio) and feed conversion ratio(FCR).The m RNA expressions of LPL and Myo D in muscle were not significantly affected by the different palm oil levels,although the highest expression was observed in fish fed with 6% palm oil *** also existed a strong positive correlation between the m RNA expression of LPL,Myo D and SGR,PER,while their correlation with FCR was *** conclusion,elevated palm oil affected the RNA,DNA concentration as well as RNA/DNA ratio significantly,although the m RNA expression of LPL and Myo D were not affected significantly by elevated palm oil levels.

关键词： Oreochromis niloticus palm oil RNA: DNA ratio LPL MyoD gene expression

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Description of Cephalodella changdensis sp. nov. (Rotifera: Notommatidae) from Hunan Province, China

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Journal of Oceanology and Limnology 2020年第6期38卷 1900-1906页

作者： WEI Nan JERSABEK christian D YANG Yufeng South China Institute of Environmental Sciences Ministry of Ecology and EnvironmentGuangzhou 510530China Department of Biosciences University of SalzburgA-5020 SalzburgAustria Department of Ecology and Institute of Hydrobiology Jinan UniversityGuangzhou 510632China

A new freshwater rotifer Cephalodella changdensis *** in two locations in Changde,Hunan,China,is described *** new species is characterized by body shape moderately elongate,double eyespots frontally,toes conical and almost straight,about one fourth of total length,trophi type B(classification after Wulfert,1937),rami asymmetrical with a pair of long alulae,fulcrum inverted T-shaped(ventral/dorsal view)with dorsally directed distal projection(lateral view),and manubria asymmetrical,left one slightly longer and stronger,with J-shaped or crutch-shaped posterior ends.

关键词： rotifer new species Cephalodella changdensis sp.nov. taxonomy trophi asymmetrical

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Ecological intensification of agriculture through biodiversity management:introduction

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Journal of Plant Ecology 2023年第6期16卷 1-4页

作者： Bernhard Schmid christian Schöb Department of Geography Remote Sensing LaboratoriesUniversity of ZurichWinterthurerstrasse 1908057 ZürichSwitzerland Universidad rey Juan Carlos Calle Tulipán s/n28933 MóstolesSpain

A major feature of humans is that they can attain much higher population densities than any non-domestic animal species of similar body size(Damuth 1987).This is most likely due to the invention of agriculture(Herrera and Garcia-Bertrand 2018),which allowed humans to manage ecosystems in such a way that as much biomass as possible is converted into food(Vitousek et al.1986).

关键词： Ecological likely agriculture

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