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Investigation of environmental and land use impacts in forested permafrost headwaters of the Selenga-Baikal river system,Mongolia-Effects on discharge,water quality and macroinvertebrate diversity

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International Soil and Water Conservation Research 2021年第4期9卷 605-619页

作者： martin Pfeiffer Georg Küstner Erdenetsetseg Erdenesukh Wolf von Tümpling jürgen Hofmann Department of Biogeography University of BayreuthUniversitätsstraße 3095447 BayreuthGermany Department of Aquatic Ecosystem Analysis and Management(ASAM) Helmholtz Centre for Environmental Research-UFZBrückstraße 3a39114 MagdeburgGermany Department of Ecology National University of MongoliaBaga toiruu 47Ulaanbaatar 210646Mongolia Department of Animal Ecology and Tropical Biology BiocenterJulius-Maximilians-Universität WürzburgAm Hubland97074 WürzburgGermany National Dong Hwa University No.1Sec.2Da Hsueh Rd.ShoufengHualien 97401Taiwan Central Laboratory for Water Analytics&Chemometrics Helmholtz Centre for Environmental Research-UFZBrückstrasse 3a39114 MagdeburgGermany Büro für Integrierten Gewässerschutz-BiG Werner-Voß-Damm 54 b12101 BerlinGermany

Headwater streams play a major role for provision of ecosystem services,*** *** investigated a high-altitude headwater catchment of the Kharaa River(including 411st-order rivers)to understand the impact of land cover(especially forest cover),environment and human usage on runoff,chemical water quality and macroinvertebrate fauna in a river basin under discontinuous permafrost conditions in an arid,sparsely populated region of *** verify our hypotheses that different landuses and environmental impacts in permafrost headwaters influence water quality,we investigated 105 sampling sites,37 of them at intermittent stream sections without water *** was positively impacted by land cover types steppe,grassland and forest and negatively by shrubland,forest burnt by wild fires(indicating a reduction of permafrost)and *** quality was affected by altitude,longitude and latitude,shrub growth and water *** diversity of macroinvertebrates was driven by water temperature,iron content of the water,flow velocity,and subbasin size(adjusted R^(2)=0.54).Sample plots clustered in three groups that differed in water chemistry,macroinvertebrate diversity,species composition and *** study confirms that steppes and grasslands have a higher contribution to runoff than forests,forest cover has a positive impact on water quality,and diversity of macroinvertebrates is higher in sites with less nutrients and *** excellent ecological status of the upper reaches of the Kharaa is severely threatened by forest fires and human-induced climate change and urgently needs to be conserved.

关键词： Ecosystem services Ephemeroptera-Plecoptera-Trichoptera (EPT)complex GIS-based analysis IWRM-MoMo project Land use land cover(LULC) Natural reference state Runoff Self-purification capacity Stream water chemistry

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Numerical Simulation of the Tip Aerodynamics and Acoustics Test

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journal of Thermal Science 2016年第2期25卷 153-160页

作者： f Tejero E P Doerffer O Szulc j L Cross The Szwalski Institute of fluid-flow Machinery Polish Academy of Sciences. Fiszera 14 80-231 Gdansk Poland NASA Ames Research Center (retired) Moffett Field CA USA

The application of an efficient flow control system on helicopter rotor blades may lead to improved aerodynamic performance. Recently, our invention of Rod Vortex Generators(RVGs) has been analyzed for helicopter rotor blades in hover with success. As a step forward, the study has been extended to forward flight conditions. for this reason, a validation of the numerical modelling for a reference helicopter rotor(without flow control) is needed. The article presents a study of the flow-field of the AH-1G helicopter rotor in low-, medium- and high-speed forward flight. The CfD code flower from DLR has proven to be a suitable tool for the aerodynamic analysis of the two-bladed rotor without any artificial wake modelling. It solves the URANS equations with LEA(Linear Explicit Algebraic stress) k-ω model using the chimera overlapping grids technique. Validation of the numerical model uses comparison with the detailed flight test data gathered by Cross j. L. and Watts M. E. during the Tip Aerodynamics and Acoustics Test(TAAT) conducted at NASA in 1981. Satisfactory agreements for all speed regimes and a presence of significant flow separation in high-speed forward flight suggest a possible benefit from the future implementation of RVGs. The numerical results based on the URANS approach are presented not only for a popular, low-speed case commonly used in rotorcraft community for CfD codes validation but preferably for medium- and high-speed test conditions that have not been published to date.

关键词： AH-1G TAAT helicopter rotor forward flight chimera overlapping grid

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An Event Horizon Imager(EHI) Mission Concept Utilizing Medium Earth Orbit Sub-mm Interferometry

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空间科学学报 2021年第2期41卷 211-233页

作者： KUDRIASHOV V martin-NEIRA M ROELOfS f fALCKE H BRINKERINK C BARYSHEV A HOGERHEIjDE M YOUNG A POURSHAGHAGHI H KLEIN-WOLT M MOSCIBRODZKA M DAVELAAR j BARAT I DUESMANN B VALENTA V PERDIGUES ARMENGOL j M DE WILDE D martin IGLESIAS P ALAGHA N VAN DER VORST M Department of Astrophysics/IMAPP Radboud University NijmegenP.O.Box 90106500 GL Nijmegenthe Netherlands ESTEC/ESA Keplerlaan 12201 A2 Noordurigkthe Netherlands Mar Planck Institute for Radio Astrorny Auf dem Higel 69D-53121 Bon(Endenich)Germany University of Groningen Landleven 129747 AD Groningenthe Netherlands Leiden Observatory Leiden UniversityPO Box 95132300 RALeidenthe Netherlands Anton Pannekoek Institute for Astronomy University of AmsterdamScience Park 9041098 XHAmsterdamthe Netherlands Center for Computational Astrophysics Flatiron Institute162 Fifth AvenueNew YorkNY 10010USA

Submillimeter interferometry has the potential to image supermassive black holes on event horizon scales,providing tests of the theory of general relativity and increasing our understanding of black hole accretion *** Event Horizon Telescope(EHT) performs these observations from the ground,and its main imaging targets are Sagittarius A~* in the Galactic Center and the black hole at the center of the M87 ***,the EHT is fundamentally limited in its performance by atmospheric effects and sparse terrestrial(u,v)-coverage(fourier sampling of the image).The scientific interest in quantitative studies of the horizon size and shape of these black holes has motivated studies into using space interferometry which is free of these *** resolution considerations and interstellar scattering effects push the desired observing frequency to bands above 500 *** paper presents the requirements for meeting these science goals,describes the concept of interferometry from Polar or Equatorial Medium Earth Orbits(PECMEO) which we dub the Event Horizon Imager(EHI),and utilizes suitable space technology *** this concept,two or three satellites orbit at slightly different orbital radii,resulting in a dense and uniform spiral-shaped(u,v)-coverage over *** local oscillator signals are shared via an inter-satellite link,and the data streams are correlated on-board before final processing on the ***-satellite metrology and satellite positioning are extensively employed to facilitate the knowledge of the instrument position vector,and its time *** European space heritage usable for both the front ends and the antenna technology of such an instrument is *** and future sensors for the required inter-satellite metrology are *** performance estimates and simulation results are given.

关键词： Instrumentation Space VLBI Radio Telescopes

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大洋中脊扩张速度的成岩意义

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地球与环境 1986年第10期 63-67页

作者： M.f.j.flower ,郭其悌

引言在全球构造体系中,地壳增生线——洋中脊在不同地区以不同的速度扩张着。其中大西洋中脊为慢速扩张脊,扩张速度稍大于1cm/年;东太平洋洋隆为快速扩张脊,最高可达20cm/年;以印度洋中脊为代表的扩张速度介于上述两者之间。沿着这些洋... 详细信息

引言在全球构造体系中,地壳增生线——洋中脊在不同地区以不同的速度扩张着。其中大西洋中脊为慢速扩张脊,扩张速度稍大于1cm/年;东太平洋洋隆为快速扩张脊,最高可达20cm/年;以印度洋中脊为代表的扩张速度介于上述两者之间。沿着这些洋脊,来自地幔的岩浆上涌喷出,构成新生的大洋地壳。至于洋脊扩张与火成岩的形成有什么关系,这是近十

关键词：洋中脊斑晶玄武岩基性岩洋脊海脊岩浆房相容元素结晶分异岩浆分异斜长石岩石学全岩扩张速度成岩

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Possibilities for arthroscopic treatment of the ageing sternoclavicular joint

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World journal of Orthopedics 2017年第7期8卷 536-544页

作者： martin Rathcke j?rgen Tranum-jensen Michael Rindom Krogsgaard Section for Sportstraumatology M51 Bispebjerg-Frederiksberg Hospital Department of Cellular and Molecular Medicine University of Copenhagen

AIM To investigate if there are typical degenerative changes in the ageing sternoclavicular joint(SCj), potentially accessible for arthroscopic *** Both SCjs were obtained from 39 human cadavers(mean age: 79 years, range: 59-96, 13 f/26 M). Each frozen specimen was divided frontally with a band saw, so that both SCjs were opened in the same section through the center of the discs. After thawing of the specimens, the condition of the discs was evaluated by probing and visual inspection. The articular cartilages were graded according to Outerbridge, and disc attachments were probed. Cranio-caudal heights of the joint cartilages were measured. Superior motion of the clavicle with inferior movement of the lateral clavicle was *** Degenerative changes of the discs were common. Only 22 discs(28%) were fully attached and the discs were thickest superiorly. We found a typical pattern: Detachment of the disc inferiorly in connection with thinning, fraying and fragmentation of the inferior part of the disc, and detachment from the anterior and/or posterior capsule. Severe joint cartilage degeneration ≥ grade 3 was more common on the clavicular side(73%) than on the sternal side(54%) of the joint. In cadaversfor only 19% aged 90 years or more. There was no difference in cartilage changes when right and left sides were compared, and no difference between sexes. Only one cadaver-a woman aged 60 years-had normal cartilages. CONCLUSION Changes in the disc and cartilages can be treated by resection of disc, cartilage, intraarticular osteophytes or medial clavicle end. Reattachment of a degenerated disc is not possible.

关键词： Sternoclavicular Degenerative Cartilage Disc Arthroscopy

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玻安岩及其有关岩石研究

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地球与环境 1987年第9期 69-72+74页

作者： M.f.j.flower,郭其悌美国伊利诺斯大学地质系教授

引言玻安岩(也称玻苏玄武岩)是根据日本小笠原群岛命名的一类岩石。人们早就发现了这类岩石,但把它列入重要岩类加以研究则是七十年代末的事情。近几年来,随着海洋地质学的发展,尤其是一系列深海钻探计划的实施,

关键词：玻安岩相图化学成分富集高镁安山岩小笠原群岛平衡图化学组成岩石马里亚纳海槽

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一种类似大洋中脊的斜长岩的成因

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西北地质 1986年第6期 48-51页

作者： M. f. j. flower 程淑兰

块状斜长岩成因模是同它在中-晚元古代非造山形成的横贯大陆带环境分不开的。然而,对产生富铝斜长石过饱和基性母液体的机理,仍难以理解,但它又是产生块状斜长岩的一个关键问题。通常斜长岩-苏长岩-橄长岩组合,反映了地幔同位素特征,并... 详细信息

块状斜长岩成因模是同它在中-晚元古代非造山形成的横贯大陆带环境分不开的。然而,对产生富铝斜长石过饱和基性母液体的机理,仍难以理解,但它又是产生块状斜长岩的一个关键问题。通常斜长岩-苏长岩-橄长岩组合,反映了地幔同位素特征,并常与壳内花岗岩伴生。该特征与早期岩石圈扩张情况下,地幔和地壳内大量绝热熔融作用(Emslie,1980)相适应。岩浆的多期侵入、混合和系统的补充也很明显(Berg,1980),而且可以进一步表现元古代斜长岩-苏长岩-橄长岩系统的特征。它们与现代洋中脊的这类岩石相似(O′Hara和Mathews,1981)。虽然,没有人解释斜长岩的岩石性质和规模,但是,洋中脊玄武岩中斜

关键词：洋中脊玄武岩苏长岩橄长岩橄榄石基性岩岛状硅酸盐矿物斜长石岩石组合单斜辉石

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Progress in TILLING as a tool for functional genomics and improvement of crops

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journal of Integrative Plant Biology 2014年第5期56卷 425-443页

作者： Liang Chen Liugen Hao martin A. j. Parry Andrew L. Phillips Yin-Gang Hu State Key Laboratory of Crop Stress Biology in Arid Areas and College of Agronomy Northwest A&F University Department of Plant Biology and Crop Science Rothamsted Research Institute of Water Saving Agriculture in Arid Regions of China Northwest A&F University

food security is a global concern and substantial yield increases in crops are required to feed the growing world population. Mutagenesis is an important tool in crop improvement and is free of the regulatory restrictions imposed on genetically modified organisms. Targeting Induced Local Lesions in Genomes（TILLING）, which combines traditional chemical mutagenesis with high‐throughput genome‐wide screening for point mutations in desired genes, offers a powerful way to create novel mutant alleles for both functional genomics and improvement of crops. TILLING is generally applicable to genomes whether small or large, diploid or evenallohexaploid, and shows great potential to address the major challenge of linking sequence information to the function of genes and to modulate key traits for plant breeding. TILLING has been successfully applied in many crop species and recent progress in TILLING is summarized below, especially on the developments in mutation detection technology, application of TILLING in gene functional studies and crop breeding. The potential of TILLING/EcoTILLING for functional genetics and crop improvement is also discussed. furthermore, a small‐scale forward strategy including backcross and selfing was conducted to release the potential mutant phenotypes masked in M2（or M3） plants.

关键词： Crop breeding functional genomics mutation detection TILLING

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Interaction of the α2A domain of integrin with small collagen fragments

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Protein & Cell 2010年第4期1卷 393-405页

作者： Hans-Christian Siebert Monika Burg-Roderfeld Thomas Eckert Sabine Stötzel Ulrike Kirch Tammo Diercks martin j.Humphries martin frank Rainer Wechselberger Emad Tajkhorshid Steffen Oesser Institut für Biochemie und Endokrinologie Veterinärmedizinische FakultätJustus-Liebig-Universität GießenFrankfurter Str.10035392 GießenGermany CiC bioGUNE Parque Tecnológico de BizkaiaEdificio 80048160 DerioSpain Utrecht facility for High-resolution NMR Bijvoetcenter for Biomolecular Research Utrecht UniversityPadualaan 83584CH UtrechtThe Netherlands Wellcome Trust Centre for Cell-Matrix Research School of Biological SciencesUniversity of Manchester2.205 Stopford BuildingOxford RoadManchester M139PTUK Molecular Structure Analysis Core facility Deutsches KrebsforschungszentrumIm Neuenheimer Feld 28069120 HeidelbergGermany Department of Biochemistry Beckman Instituteand Center for Biophysics and Computational BiologyUniversity of Illinois at Urbana-ChampaignUrbanaILUSA Collagen Research Institute Schauenburgerstr.116D-24118 KielGermany

We here present a detailed study of the ligand-receptor interactions between single and triple-helical strands of collagen and the α2A domain of integrin(α2A),providing valuable new insights into the mechanisms and dynamics of collagen-integrin binding at a sub-molecular *** occurrence of single and triple-helical strands of the collagen fragments was scrutinized with atom force microscopy(AfM)*** interactions of the triple-stranded fragments comparable to those of collagen can only be detected for the 42mer triple-helical collagen-like peptide under study(which contains 42 amino acid residues per strand)by solid phase assays as well as by surface plasmon resonance(SPR)***,changes in NMR signals during titration and characteristic saturation transfer difference(STD)NMR signals are also detectable whenα2A is added to a solution of the 21mer single-stranded collagen *** dynamics(MD)simulations employing different sets of force field parameters were applied to study the interaction between triple-helical or single-stranded collagen fragments withα*** is remarkable that even single-stranded collagen fragments can form various complexes withα2A showing significant differences in the complex stability with identical *** results of MD simulations are in agreement with the signal alterations in our NMR experiments,which are indicative of the formation of weak complexes between single-stranded collagen andα2A in *** results provide useful information concerning possible interactions ofα2A with small collagen fragments that are of relevance to the design of novel therapeutic A-domain inhibitors.

关键词： integrin-collagen interaction NMR SPR AfM molecular modeling

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Test of incremental respiratory endurance as home-based, standalone therapy in chronic obstructive pulmonary disease: A case report

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World journal of Clinical Cases 2022年第1期10卷 353-360页

作者： filip Dosbaba martin Hartman Ladislav Batalik Kristian Brat Marek Plutinsky jakub Hnatiak Magno f formiga Lawrence Patrick Cahalin Department of Rehabilitation University Hospital BrnoBrno 62500Czech Republic Department of Public Health Faculty of MedicineMasaryk University BrnoBrno 62500Czech Republic Department of Respiratory Diseases University Hospital BrnoBrno 62500Czech Republic International Clinical Research Center St.Anne’s University HospitalBrno 65691Czech Republic Departamento de fisioterapia Universidade Estadual da ParaíbaCampina Grande 58051Brazil Department of Physical Therapy University of Miami–Miller School of MedicineCoral GablesFL 33101United States

BACKGROUND The prevalence of chronic obstructive pulmonary disease(COPD)is increasing worldwide,and at the same time it is associated with increased mortality and reduced quality of *** to build sustainable rehabilitation approaches to COPD treatment and prevention are *** system of long-term pulmonary rehabilitation care is *** main reasons for the absence of these outpatient programs are the lack of experience,the lack of interest of insurance companies in secondary prevention programs,and the lack of healthcare facilities in large geographical *** possibility of at-home pulmonary rehabilitation models(telemonitoring and telecoaching)could solve this *** SUMMARY A 71-year-old man with severe COPD,Global Initiative for Obstructive Lung Diseases stage 3 underwent an 8-wk remotely monitored inspiratory muscle training with a device based on the test of incremental respiratory endurance ***,body plethysmography,test of incremental respiratory endurance examination,6-min walking test,body mass index,airflow obstruction,dyspnea,exercise capacity index,and subjective perception of dyspnea were performed as part of the initial and final *** patient performed training at home,and the physiotherapist monitored the patient remotely through a web application that allowed the physiotherapist to evaluate all training parameters in real-time and respond to any *** 8 wk of home training,there was a significant increase in all monitored values:maximal inspiratory pressure,a novel parameter sustained maximal inspiratory pressure,forced expiratory volume in 1 s,total lung capacity,forced vital capacity,peak expiratory flow,and inspiratory *** was also an improvement in the perception of dyspnea according to the COPD Assessment Test and a modified Medical Research Council Breathlessness Scale,an increase in exercise tolerance according to the 6-min walking test,and a decrease in the exercise

关键词： Chronic obstructive pulmonary disease Test of incremental respiratory endurance Inspiratory muscle training Telerehabilitation Case report

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