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Forest composition and red oak (Quercus sp.) response to elevation gradients across greentree reservoirs

Forest Ecosystems 2023年第5期10卷 607-617页

作者： Cassandra Hug Pradip Saud keith McKnight Douglas C.Osborne College of Forestry Agriculturaland Natural ResourcesUniversity of Arkansas at MonticelloMonticelloAR71656USA USFWS/Lower Mississippi Valley Joint Venture TylerTX75707USA Five Oaks Ag research and Education Center HumphreyAR72073USA

Elevation gradients within forested wetlands have long been recognized for their role in defining species composition through factors such as hydrology and soil *** reservoirs(GTrs)are leveeimpounded tracts of bottomland hardwood forest flooded throughout the winter months to provide habitat for overwintering *** flooding of GTrs alters the forest composition due to flood frequency,depth,and duration in combination with slight changes in *** evaluate the effect of elevation gradients,soil properties,and management techniques in the overstory species composition and red oak(Quercus spp.)species abundance,we inventoried 662 plots across 12 independent GTrs in eastern *** the lower elevations ranging from 50.98 to 54.99 m above sea level,the importance value index(IVI)was highest for nuttall oak(Quercus texana)and overcup oak(Quercus lyrata),whereas IVI shifted to cherrybark oak(Quercus pagoda)in the higher elevations ranging from 54.99 to 58.00 *** diversity did not differ by elevation gradient,soil property,or management technique within *** diversity,using non-metric multi-dimensional scaling(NMDS)analysis,indicated site-specific variability significantly correlated with the environmental predictors,including elevation(r^(2)=0.57),easting(r^(2)=0.47),soil texture(r^(2)=0.21),and pH(r^(2)=0.12).red oak species-specific mixed-effects modeling of abundance response using Poisson distribution suggested an inverse correlation of nuttall oak and a direct correlation of cherrybark oak abundance with ***,willow oak(Quercus phellos)abundance was not significantly affected by elevation but was by silt loam soil texture and restoration management *** findings will aid management efforts to reduce the dominance of less desirable species that are prominent under specific environmental conditions and promote the dominance of more desirable *** GTr sustainability is increas

关键词： Bottomland hardwoods Diversity Forested wetland Overstory red oak Soil Thinning and management

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OVErVIEW OF COMPLEX SYSTEMS IN SPOrT

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Journal of Systems Science & Complexity 2013年第1期26卷 4-13页

作者： BALAGUE Natàlia TOrrENTS Carlota HrISTOVSKI robert DAVIDS keith ArAUJO Duarte INEFC University of Barcelona INEFC University of Lleida Ss.Cyril and Methodius University SkopjeRepublic of Macedonia School of Human Movement Studies Queensland University of Technologies Faculty of Human Kinetics Technical University of Lisbon

The complex systems approach offers an opportunity to replace the extant pre-dominant mechanistic view on sport-related *** emphasis on the environment-system relationship,the applications of complexity principles,and the use of nonlinear dynamics mathematical tools propose a deep change in sport *** dynamics,ecological dynamics,and network approaches have been successfully applied to the study of different sport-related behaviors,from movement patterns that emerge at different scales constrained by specific sport contexts to game *** benefit from the use of such approaches in the understanding of technical,tactical,or physical conditioning aspects which change their meaning and dilute their *** creation of new learning and training strategies for teams and individual athletes is a main practical *** challenges for the future are investigating the influence of key control parameters in the nonlinear behavior of athlete-environment systems and the possible relatedness of the dynamics and constraints acting at different spatio-temporal scales in team *** sport-related phenomena can make useful contributions to a better understanding of complex systems and vice-versa.

关键词： Constraints-led approach coordination dynamics performer-environment system self- organization team dynamics.

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Micro-porous PLGA/β-TCP/TPU scaffolds prepared by solvent-based 3D printing for bone tissue engineering purposes

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regenerative Biomaterials 2023年第1期10卷 1538-1551页

作者： Luan P.Hatt Sylvie Wirth Aapo ristaniemi Daniel J.Ciric keith Thompson David Eglin Martin J.Stoddart Angela r.Armiento AO research Institute Davos 7270 Davos PlatzSwitzerland Institute for Biomechanics ETH Zurich8093 ZurichSwitzerland UCB Pharma SL13WE SloughUK Mines Saint-Etienne Universitede LyonUniversite´Jean MonnetINSERMU105942023 SainbioseSaint-EtienneFrance Medical Center Faculty of MedicineAlbert-Ludwigs-University of Freiburg79106 FreiburgGermany

The 3D printing process of fused deposition modelling is an attractive fabrication approach to create tissue-engineered bone substitutes to regenerate large mandibular bone defects,but often lacks desired surface porosity for enhanced protein adsorption and cell ***-based printing leads to the spontaneous formation of micropores on the scaffold’s surface upon solvent removal,without the need for further post *** aim is to create and characterize porous scaffolds using a new formulation composed of mechanically stable poly(lactic-co-glycol acid)and osteoconductiveβ-tricalcium phosphate with and without the addition of elastic thermoplastic polyurethane prepared by solvent-based 3D-printing ***-scale regenerative scaffolds can be 3D-printed with adequate fidelity and show porosity at multiple levels analysed via micro-computer tomography,scanning electron microscopy and N_(2) *** mechanical properties compared to a commercially available calcium phosphate ink are demonstrated in compression and screw pull out *** assessments including cell activity assay and live-dead staining prove the scaffold’s *** properties are demonstrated by performing an osteogenic differentiation assay with primary human bone marrow mesenchymal stromal *** propose a versatile fabrication process to create porous 3D-printed scaffolds with adequate mechanical stability and osteoconductivity,both important characteristics for segmental mandibular bone reconstruction.

关键词： solvent-based printing porosity regenerative scaffold osteogenesis mesenchymal stromal cells

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Complementary Physical and Mechanical Techniques to Characterise Tooth: A Bone-like Tissue

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Journal of Bionic Engineering 2006年第1期3卷 19-31页

作者： Peter Zioupos keith D. rogers Centre for Photo-manipulation and Photo-analysis of Materials Cranfield University Shrivenham SN 6 8LA UK Centre for Materials Science and Engineering Cranfield University Postgraduate Medical School Shrivenham SN 6 8LA UK

Bone like tissues are biocomposites comprising an organic matrix （mostly collagen） and a reinforcement phase in the form of mineral crystals （poorly stoichiometric apatite）. The composite properties are a result of the material characteristics of the two phases, their interaction, the relative composition, the orientation and the micro-architecture of the structure. The inherent spatial heterogeneity of these tissues （a result of evolutionary and functional requirements） and their exposure to various environmental and mechanical influences result in highly variable properties on the microscale, which can only be characterised by modern microanalytical methods. We present here results obtained by the complementary use of the modem nanoindentation and micro-X-ray diffraction techniques, which were used to probe the properties and structure of human dentine and enamel of primary molar teeth. The results show that both the addition and the higher organization of mineral within the organic matrix produce stiffer and harder tissue and that the examination of properties within small tissue volumes can be reliably achieved by use of these two methods in parallel. This opens new avenues in the study of biomaterial in general, and for the local characterisation of regions of teeth that suffered bacterial attack, mechanical wear, fluoridisation, chemical bleaching, or dental treatment such as laser ablation or drilling.

关键词： biogenic composites teeth nanoindentation hardness X-ray diffraction

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Hereditary diffuse gastric cancer: One family's story

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World Journal of Clinical Cases 2018年第1期6卷 1-5页

作者： Haley M Zylberberg keith Sultan Steven rubin Donald and Barbara Zucker School of Medicine at Hofstra/Northwell Division of Gastroenterology Donald and Barbara Zucker School of Medicine at Hofstra/Northwell

Hereditary diffuse gastric cancer(HDGC) is an inherited form of gastric cancer that carries a poor prognosis. Most HDGCs are caused by an autosomal dominant genetic mutation in the CDH1 gene, which carries a 70%-80% lifetime risk of gastric cancer. Given its submucosal origin, endoscopic surveillance is an unreliable means of early detection, and prophylactic gastrectomy is recommended for CDH1 positive individuals older than age 20 years. We describe the case of a male with recurrent gastric cancer who was diagnosed with HDGC secondary to the CDH1 mutation, and we also describe the patient's pedigree and outcomes of recommended genetic testing.

关键词： Hereditary diffuse gastric cancer Genetic testing Genetic diseases Gastric cancer Lobular breast cancer Inheritable diseases

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Applying Spray Drying to Customized Powder Manufacture

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Chinese Journal of Chemical Engineering 2004年第6期12卷 744-749页

作者： keith Masters Spray Dry Consult Intl ApS Krathusparken 2 DK-2920 Charlottenlund Denmark

Spray drying is an important continuous industrial process for drying pumpable liquid formulations irrespective of their heat sensitivity, rheology, solids content and processing rate. Furthermore spray drying has the capability through drying chamber design, plant layout and mode of operation to produce dried products of specific particulate size and morphology. These are important aspects when spray drying technology is applied to the needs of customized powder manufacture. There are many examples in industry where spray dried powders have to meet stringent specifications set by such factors as end-product powder quality standards dictated by global competition,dry raw material characteristics required for optimum downstream processing, and dry materials handling to comply with environmental, health and safety issues. Spray drying is no longer regarded just as a convective industrial drying concept, but also as an integral part of modern manufacturing practices applying powder technology. This paper reviews the aspects of spray dryer design and operation for consideration when customized powder manufacture is involved.

关键词： industrial plant design and selection particle morphology powderproperties spray drying

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Low Dietary Magnesium Intake and Hypertension

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World Journal of Cardiovascular Diseases 2016年第12期6卷 447-457页

作者： Lindsy Kass keith r. Sullivan School of Life and Medical Sciences University of Hertfordshire Hatfield UK

Purpose: Magnesium (Mg) is a key factor in blood pressure regulation. However, only in recent years, magnesium dietary intake has been studied in relation to hypertension, with equivocal conclusions. Further no comparisons have previously been made between the UK general population and primary hypertensives, the UK rNI and the USArDA. Methods: Twenty-five hypertensives (HT) (mean age 63.4 y) and twenty-one normotensives (mean age 46.7 y) were recruited from the same geographical area. Food diaries were completed and analysed to determine average daily Mg intake. Mg intake was compared between the observed group (OB), normotensives (NT) and general population (GP) and both the UK rNI and the USA rDA. results: Study participants had a significantly lower dietary Mg intake than the UK rNI (p Conclusions: Daily Mg intake in hypertensives is lower than the general population, the UK rNI and the USA rDA. Daily magnesium intake reduces with age. These findings suggest that low Mg dietary intake increases the risk of hypertension.

关键词： Magnesium Hypertension UK rNI USA rDA Blood Pressure Dietary Intake

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数据可视化,用设计“读懂”数据

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艺术与设计 2024年第3期 16-35页

作者：谭智恒九月(译) 三度(图) 不详

我们生活在一个日益复杂的世界中。我们的日常生活涉及到与数以万计的信息的交互,主要通过视觉(如果视力正常的话)以及许多不同的物理和数字渠道。其中许多信息可能对我们而言并无意义或毫不相关,但却同样要求我们关注。信息图表成为我... 详细信息

我们生活在一个日益复杂的世界中。我们的日常生活涉及到与数以万计的信息的交互,主要通过视觉(如果视力正常的话)以及许多不同的物理和数字渠道。其中许多信息可能对我们而言并无意义或毫不相关,但却同样要求我们关注。信息图表成为我们更高效地理解世界的一种捷径。信息不再仅仅是单向传播以供我们消费。

关键词：单向传播数据可视化信息图表更高效读懂日常生活

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OPTION PrIOrITIZATION FOr UNKNOWN PrEFErENCE

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Journal of Systems Science and Systems Engineering 2016年第1期25卷 39-61页

作者： Jing Yu keith W. Hipel D. Marc Kilgour Min Zhao Business School Hohai University Nanjing Jiangsu 211100 China Department of Systems Design Engineering University of Waterloo Waterloo N2L 3G1 Canada Department of Mathematics Wt'lfrid Laurier University Waterloo N2L 3C5 Canada Centre for International Governance Innovation Waterloo Ontario Canada Water resources and Sustainable Development research Centre of Jiangsu Province Nanjing 210098 China

An option prioritization technique is developed to efficiently elicit the preferences, both unknown and crisp, of decision makers （DMs） in strategic conflicts. In the Graph Model for Conflict resolution, each DM has one or more options, each of which may be selected or not. A state, or possible scenario, is formed when all DMs make an option selection. The software GMCr II contains an option prioritization procedure that makes it easy for a modeUer to enter a DM＇s crisp preference ordering over the states using prioritized statements describing the DM＇s preferred option combinations. This procedure is extended by adding two new logical connectives that describe uncertainty of preference. For each DM, a range of possible scores for each feasible state can then be calculated, facilitating the determination of a preference ordering containing uncertainty by comparing and ranking scores. To demonstrate how this new methodology can be used to represent tmknown preferences in a real-world decision problem, it is applied to a Canadian dispute over proposed water exports.

关键词： Graph model for conflict resolution option prioritization unknown preference logical connectives

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revisiting the death of geography in the era of Big Data:the friction of distance in cyberspace and real space

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International Journal of Digital Earth 2018年第5期11卷 451-469页

作者： Su Yeon Han Ming-Hsiang Tsou keith C.Clarke Department of Geography San Diego State UniversitySan DiegoCAUSA Department of Geography University of CaliforniaSanta BarbaraCAUSA

Many scholars have argued that the importance of geographic proximity in human interactions has been diminished by the use of the Internet,while others disagree with this *** have noted the distance decay effect in both cyberspace and real space,showing that interactions occur with an inverse relationship between the number of interactions and the distance between the locations of the ***,these studies rarely provide strong evidence to show the influence of distance on interactions in cyberspace,nor do they quantify the differences in the amount of friction of distance between cyberspace and real *** fill this gap,this study used massive amounts of social media data(Twitter)to compare the influence of distance decay on human interactions between cyberspace and real space in a quantitative *** estimate the distance decay effect in both cyberspace and real space,the distance decay function of interactions in each space was *** the distance decay in cyberspace in this study can help predict the degree of information flow across space through social *** how far ideas can be diffused through social media is useful for users of location-based services,policy advocates,public health officials,and political campaigners.

关键词： First law of geography distance decay Big Data Twitter social media information diffusion

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