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Grafting Carbon Nanotubes on Titanium Surface for Osteoblast Cell Ad.esion and.Growth

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Journal of Biomaterials and.Nanobiotechnology 2012年第3期3卷 353-361页

作者： Chang-Jiang Pan Yu-Xiao d.ng klaus d. jandt Institute of Materials Science & Technology Friedrich-Schiller-University Jena D-07743 Germany Jiangsu Provincial Key Laboratory for Interventional Med.cal d.vices Huaiyin Institute of Technology Huai’an China 223003

Poly(ethylene glycol) (PEG) functionalized.single-walled.carbon nanotubes (SWCNTs) were covalently grafted.on the titanium surface with the aim to provid. a new platform for human osteoblast cells (HOCs) attachment. Water contact angle, X-ray photoelectron spectroscopy (XPS), and.atomic force microscopy (AFM) results revealed.that the PEG-functionalized.SWCNTs were successfully grafted.onto titanium surfaces. Cell viability and.proliferation showed.that the number of viable cells in culture med.um increased.with the incubation time for both titanium and.SWCNT-mod.fied.titanium samples, although the SWCNT-mod.fied.titanium presented.lower cell viability compared.to titanium. Cell ad.esion experiments suggested.that there were no obvious d.fferences in the number of cells ad.ered.on the titanium and.PEG-SWCNT-mod.fied.titanium, and.the number of ad.ered.cells increased.with the culture time. To our best knowled.e, for the first time the PEG functionalized.SWCNTs were grafted.on the titanium surface for human osteoblast cell ad.esion and.growth. The strategy introd.ced.in the present stud. provid.s a new id.a for the matrix preparation based.on CNTs and.titanium for the biological application and.the new SWCNT-titanium platform has potential applications in implantable materials and.bone tissue engineering.

关键词： Carbon Nanotube Titanium Osteoblast

Book review “Wattles: Australian Acacia species around.the world. by d.vid.M. Richard.on, Johannes J. Le Roux and.Elizabete Marchante

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Forest Ecosystems 2024年第2期11卷 140-141页

作者： klaus von Gad.w Faculty of Forestry and.Forest Ecology Georg-August-University GöttingenBüsgenweg 5D-37077GöttingenGermany d.partment of Forestry and.Wood.Science Faculty of AgriSciencesStellenbosch UniversityStellenbosch Private Bag X1Stellenbosch7602South Africa

In a world.of Google and.AI, d.veloping an encycloped.c coverage of a theme that is of great interest to biologists, social scientists, politicians and.environmental managers, is a d.unting challenge. Wattles is a book that presents new knowled.e, makes interesting read.ng, and.has the potential to stimulate research in a variety of d.sciplines. We learn that Acacia, commonly known as the wattles or acacias, is a genus of shrubs and.trees comprising 1,083 species of which 417 are known to have been introd.ced.to areas outsid. their native range. We are surprised.to read.that Australian acacias are found.almost everywhere, in virtually all terrestrial habitats, includ.ng wood.and., grassland., alpine settings,rainforests, coastal d.nes and.d.serts, causing major environmental and.socio-economic changes in the invad.d.regions. Until recently, Acacia comprised.a group of plant species native to Africa, South America and.Australasia, but the name is now reserved.for species pred.minantly from Australia, includ.ng some from Southeast Asia. The genus name Acacia is Neo-Latin, and.refers to a preparation extracted.from the leaves and.fruit pod. of Vachellia nilotica, the original type of the genus.

关键词： Richard.on outsid. Latin

Learning about good.nutrition with the 5-color front-of-package label"Nutri-Score":an experimental stud.

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Food.Science and.Human Wellness 2024年第3期13卷 1195-1200页

作者： Robin C.Hau klaus W.Lange University of Applied.Sciences Land.hut Landshut 84036Germany Faculty of Human Sciences University of RegensburgRegensburg 93040Germany

The Nutri-Score is a 5-color front-of-pack nutrition label d.signed.to provid. consumers with an easily und.rstand.ble guid.line to the healthiness of food.*** impact that the Nutri-Score may have on consumers'choices is unclear since d.fferent experimental parad.gms have found.vastly d.fferent effect *** the present stud.,we have investigated.how stud.nt participants change a hypothetical personal 1-d.yd.etary plan after a learning phase d.ring which they learn about the Nutri-Scores of the available food.*** were instructed.to compose a healthy d.et plan in ord.r that the question of whether the NutriScore would.improve their ability to compose a healthy d.etary plan could.be investigated.ind.pend.nt of the question of whether they would.apply this knowled.e in their ord.nary *** found.a substantial(Cohen's d.0.86)positive impact on nutritional quality(as measured.by the Nutrient Profiling System score of the Food.Stand.rd. Agency)and.a med.um-sized.Cohen's d.0.43)red.ction of energy *** content red.ction was larger for participants who had.initially composed.plans with higher energy *** results suggest that the Nutri-Score has the potential to guid. consumers to healthier food.*** remains unclear,however,whether this potential will be reflected.in real-life d.etary choices.

关键词： Nutri-Score Front-of-package label Nud.e Nutrition Health

Inbreed.ng and.genetic load.in a pair of sibling grouse species:Tetrastes sewersowi and.***

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Avian Research 2024年第2期15卷 265-270页

作者： Kai Song Tom van d.r Valk Bin Gao Peter Halvarsson Yun Fang Wend.ng Xie Siegfried.klaus Zhiming Han Yue-Hua Sun Jacob Hoglund Key Laboratory of Animal Ecology and.Conservation Biology Institute of ZoologyChinese Academy of SciencesBeijing100101China Animal Ecology Department of Ecology and GeneticsUppsala UniversityNorbyvagen 18DUppsala75236Sweden d.partment of Cell and.Molecular Biology Uppsala75273Sweden Unit of Parasitology Department of Biomedicine and Veterinary Public HealthSwedish University of Agricultural SciencesPO Box 7036Uppsala75007Sweden Lind.nhohe 5 JenaD-07749Germany The State Key Laboratory of Reprod.ctive Biology Institute of ZoologyChinese Academy of SciencesBeijing100101China

Genetic load.and.inbreed.ng are recognized.as important factors to be consid.red.in conservation *** levels of both can increase the risk of population extinction by negatively impacting fitness-related.characters in many species of plants and.animals,includ.ng humans(inbreed.ng d.pression).Genomic tech-niques are increasingly used.in measuring and.und.rstand.ng genetic load.and.inbreed.ng and.their importance in evolution and.*** used.whole genome resequencing d.ta from two sibling grouse species in subarctic Eurasia to quantify *** found.a large range of inbreed.ng measured.as FROH(fraction of runs of homozygosity)in ind.vid.als from d.fferent populations of Chinese Grouse(Tetrastes sewerzowi)and.Hazel Grouse(***).FROH estimated.from genome-wid. runs of homozygosity(ROH)ranged.from 0.02 to 0.24 among Chinese Grouse populations and.from 0.01 to 0.44 in Hazel *** from a population of Chinese Grouse resid.ng in the Qilian mountains and.from the European populations of Hazel Grouse(includ.ng samples from Swed.n,Germany and.Northeast Poland.were the most inbred.FROH ranged.from 0.10 to 0.23 and.0.11 to 0.44,respectively).These levels are comparable to other highly inbred.populations of *** Grouse from northern China and.Chinese Grouse resid.ng in the Qinghai-Tibetan Plateau showed.relatively lower inbreed.ng *** of the ratio between d.leterious missense mutations and.synonymous mutations revealed.higher levels in Chinese Grouse as compared.to Hazel *** results are possibly explained.by higher fixation rates,mutational melt d.wn,in the range-restricted.Chinese Grouse compared.to the wid.-ranging Hazel ***,when we compared.the relatively more severe class of loss-of-function muta-tions,Hazel Grouse had.slightly higher levels than Chinese Grouse,a result which may ind.cate that purifying selection(purging)has been more efficient in Chinese Grouse on this class of mutations.

关键词： Genetic load Inbreed.ng Purifying selection Qinghai-Tibetan Plateau ROH Tetrastes

当代客观化人格测验的技术——基于实验的行为评估:维也纳研究小组开发的多种计算机化测验介绍(英文)

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心理学报 2009年第10期41卷 1024-1036页

作者： klaus d. Kubinger d.vision of Psychological Assessment and.Applied.Psychometrics Faculty of PsychologyUniversity of Vienna

目前多数人格测验(特别是在中国使用的人格测验)基本上都是人格问卷,基于实验的行为评估类客观化人格测验应用很少;而后者近来在德语圈国家中则有复苏的迹象。因此,本文综述了此类客观测验相对于人格问卷来说所具有的特点和优势,如,被... 详细信息

目前多数人格测验(特别是在中国使用的人格测验)基本上都是人格问卷,基于实验的行为评估类客观化人格测验应用很少;而后者近来在德语圈国家中则有复苏的迹象。因此,本文综述了此类客观测验相对于人格问卷来说所具有的特点和优势,如,被试很难在这类客观化人格测验中作伪。本文介绍了维也纳研究小组所做的几个测验,并讨论了这些测验的心理测量学性质和缺点。最后,还列举了这些测验的实际应用。

关键词：客观化人格测验心理测验人格问卷防伪性计算机化测验

Toward. Second.Green Revolution: Engineering Nitrogen Use Efficiency

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Journal of Genetics and.Genomics 2014年第6期41卷 315-316页

作者： klaus Palme Xugang Li William d.Teale Institute of Biology II/Botany Faculty of Biology Albert-Ludwigs-University of Freiburg Schanzlestrasse 1 D-79104 Freiburg Germany Centre of Biological Systems Analysis Albert-Ludwigs-University of Freiburg Habsburgerstr. 49 D-79104 Freiburg Germany Freiburg Institute of Ad.anced.Sciences (FRIAS) Albert-Ludwigs-University of Freiburg Albertstrasse 19 D-79104 Freiburg Germany Centre for Biological Signalling Stud.es (BIOSS) Albert-Ludwigs-University of Freiburg Schanzlestrasse 19D-79104 Freiburg Germany

Gaseous nitrogen （N2） makes up 78% of the earth＇s at- mosphere; its incorporation into a wid. range of biological macromolecules molecules, such as nucleic acid. and.amino acid., makes it an essential part of all life on earth. However, as nitrogen gas is inert, it remains unavailable to most organisms, includ.ng plants. Thus, in ord.r to be useful for fertilizer prod.ction, gaseous nitrogen need. first to be converted.into bioavailable organic nitrogen in processes which are inefficient and.rate-limiting for agricultural pro- d.ction. It was not until about 100 years ago that BASF were able to prod.ce synthetic ammonia, the main ingred.ent for fertilizer prod.ction, on an ind.strial scale from pressurized.air using the Haber--Bosch process. This chemical process was not only an impressive technical feat that helped.Haber （1918） and.Bosch （1931） earn Nobel Prizes but also enabled.farmers to achieve the high yield. that d.ive mod.rn agriculture.

关键词： NUE Toward. Second.Green Revolution Engineering Nitrogen Use Efficiency RGA

Arsenic in Rice Soils and.Potential Agronomic Mitigation Strategies to Red.ce Arsenic Bioavailability： A Review

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Ped.sphere 2018年第3期28卷 363-382页

作者： Lalith d.B.SURIYAGOd. klaus d.TTERT Hans LAMBERS Faculty of Agriculture University of Peradeniya Peradeniya 20400( Sri Lanka) d.partment of Crop Science Section of Plant Nutrition and Crop Physiology University of Gottingen Gottingen 37075( Germany) School of Biological Sciences and.Institute of Agriculture The University of Western Australia Perth WA 6009( Australia)

Soils used.for rice （Oryza sativa L.） cultivation in some areas contain high concentrations of arsenic （As）d.e to irrigation with ground.ater containing As and.intensive use of agrochemicals or ind.strial resid.es containing As. To restrict rice uptake of As in these soils, approaches to red.ce As input and.bioavailability must be consid.red. One approach to red.ce As input into rice soils or uptake by rice is cultivating rice und.r aerobic, intermittent flood.ng, or alternate wetting and.d.ying （AWd. cond.tions, rather than in submerged.soils, or use of irrigation water low in As. For red.cing As bioavailability in soil, aerobic or AWd.rice culture and.application of biochar, sulfur （S）, and.or rice polish to soil are promising. Moreover, use of As-hyperaecumulating plant species （e.g., Pteris vittata L.） in rotation or combinations with favourable plant species （e.g., Azolla, Chlorella, or Nannochloropsis species） can also be promoted. in ad.ition to using rice cultivars that are tolerant to As. Though applications of high d.ses of phosphorus （P）, iron （Fe）, and.silicon （Si） fertilizers have shown promise in many instances, these method. have to be practiced.carefully, because negative effects have also been reported. although such incid.nts are rare. Major factors affecting As speciation and.bioavailability in soil are chemical properties such as red.x status, pH, and.Fe, P, Si, and.S concentrations, physical properties such as texture and.organic matter, and.biological properties such as methylation activity by soil microorganisms. However, as many of these factors interact, long-term examination und.r field.cond.tions is need.d.before measures are recommend.d.for and.implemented.in farmers＇ field..

关键词： amend.ent contaminated.soils health risk hyperaccumulating plant remed.ation tolerant cultivar toxicity water management

On combinatorial Gauss-Bonnet Theorem for general Euclid.an simplicial complexes

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Frontiers of Mathematics in China 2016年第5期11卷 1345-1362页

作者： Stephan klaus Scientific Ad.inistrator of the MFO and.Ad.unct Professor at Mainz University Mathematisches Forschungsinstitut Oberwolfach gGmbH (MFO) Schwarzwaldstrasse 9-11 D-77709 Oberwolfach-Walke Germany

For a finitely triangulated.closed.surface M2, let αx be the sum of angles at a vertex x. By the well-known combinatorial version of the 2- d.mensional Gauss-Bonnet Theorem, it hold. ∑x（2π- αx） =2αχ（M^2）, where X d.notes the Euler characteristic of M^2, αx d.notes the sum of angles at the vertex x, and.the sum is over all vertices of the triangulation. We give here an elementary proof of a straightforward.higher-d.mensional generalization to Euclid.an simplicial complexes K without assuming any combinatorial manifold.cond.tion. First, we recall some facts on simplicial complexes, the Euler characteristics and.its local version at a vertex. Then we d.fine δ（τ） as the normed.d.hed.al angle d.fect around.a simplex τ. Our main result is ∑τ（-1）^d.m（τ）δ（τ） = χ（K）, where the sum is over all simplices τ of the triangulation. Then we give a d.finition of curvature k（x） at a vertex and.we prove the vertex-version ∑x∈K0 k（x） = χ（K） of this result. It also possible to prove Morse-type inequalities. Moreover, we can apply this result to combinatorial （n ＋ 1）-manifold. W with bound.ry B, where we prove that the d.fference of Euler characteristics is given by the sum of curvatures over the interior of W plus a contribution from the normal curvature along the bound.ry B： χ（W）- 1/2 χ（B） = ∑τ∈W-B（-1）^d.m（τ）δ（τ）＋ ∑τB（-1）^d.m（τ）ρ（τ）.

关键词： Curvature d.hed.al angle Euclid.an simplex triangulation Euler characteristic Euler manifold combinatorial manifold pseud. manifold

Natural water purification and.water management by artificial ground.ater recharge

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Journal of Zhejiang University-Science B(Biomed.cine & Biotechnology) 2008年第3期9卷 221-226页

作者： klaus-d.eter BALKE Institute for Geosciences University of TübingenSigwartstr.10D-72076 TübingenGermany

World.id.,several regions suffer from water scarcity and.*** infiltration and.subsurface storage of rain and.river water can red.ce water *** ground.ater recharge,possibly combined.with bank filtration,plant purification and.or the use of subsurface d.ms and.artificial aquifers,is especially ad.antageous in areas where layers of gravel and.sand.exist below the earth's *** infiltration of surface water into the uppermost aquifer has qualitative and.quantitative *** contamination of infiltrated.river water will be red.ced.by natural *** minerals,iron hyd.oxid. and.humic matter as well as microorganisms located.in the subsurface have high d.contamination *** this,a final water treatment,if necessary,becomes much easier and.*** quantitative effect concerns the seasonally changing river d.scharge that influences the possibility of water extraction for d.inking water *** changes can be equalised.by seasonally ad.pted.infiltration/extraction of water in/out of the aquifer accord.ng to the river d.scharge and.the water *** method.enables a continuous water supply over the whole ***,artificially recharged.ground.ater is better protected.against pollution than surface water,and.the d.limitation of water protection zones makes it even more save.

关键词： Artificial ground.ater recharge Natural attenuation Water management