Inter‐ and intraspecific spatial distributions, spatial segregation by dominants and emergent neutrality in understorey plants

Oikos ◽  
2021 ◽  
Author(s):  
Werner Ulrich ◽  
Piotr Olszewski ◽  
Radosław Puchałka ◽  
Piotr Sewerniak ◽  
Marcin Koprowski
Keyword(s):  
Spatial Segregation ◽  
Spatial Distributions ◽  
Understorey Plants

Reaction couples of ceramic thin films prepared by CVD

1988 ◽  
Vol 46 ◽  
pp. 798-799
Author(s):  
D.W. Susnitzky ◽  
S.R. Summerfelt ◽  
C.B. Carter
Keyword(s):  
Thin Film ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Deposition Process ◽  
Solid State Reactions ◽  
Spatial Distributions ◽  
Diffusion Couples ◽  
Kinetics Studies ◽  
Ceramic Thin Films ◽  
Initial Stage

Solid-state reactions have traditionally been studied in the form of diffusion couples. This ‘bulk’ approach has been modified, for the specific case of the reaction between NiO and Al2O3, by growing NiAl2O4 (spinel) from electron-transparent Al2O3 TEM foils which had been exposed to NiO vapor at 1415°C. This latter ‘thin-film’ approach has been used to characterize the initial stage of spinel formation and to produce clean phase boundaries since further TEM preparation is not required after the reaction is completed. The present study demonstrates that chemical-vapor deposition (CVD) can be used to deposit NiO particles, with controlled size and spatial distributions, onto Al2O3 TEM specimens. Chemical reactions do not occur during the deposition process, since CVD is a relatively low-temperature technique, and thus the NiO-Al2O3 interface can be characterized. Moreover, a series of annealing treatments can be performed on the same sample which allows both Ni0-NiAl2O4 and NiAl2O4-Al2O3 interfaces to be characterized and which therefore makes this technique amenable to kinetics studies of thin-film reactions.

Application of high-resolution field-emission LVSEM, backscatter imaging, immunogold staining to definition of the spatial distributions of two human neutrophil adherence receptors

1993 ◽  
Vol 51 ◽  
pp. 36-37
Author(s):  
Robert D. Nelson ◽  
Sharon R. Hasslen ◽  
Stanley L. Erlandsen
Keyword(s):  
Cell Surface ◽  
Surface Membrane ◽  
Three Dimensional ◽  
Human Neutrophils ◽  
Spatial Distributions ◽  
Immunogold Staining ◽  
Functional Control ◽  
Neutrophil Adherence ◽  
Definition Of ◽  
Mode Of Attachment

Receptors are commonly defined in terms of number per cell, affinity for ligand, chemical structure, mode of attachment to the cell surface, and mechanism of signal transduction. We propose to show that knowledge of spatial distribution of receptors on the cell surface can provide additional clues to their function and components of functional control.L-selectin and Mac-1 denote two receptor populations on the neutrophil surface that mediate neutrophil-endothelial cell adherence interactions and provide for targeting of neutrophil recruitment to sites of inflammation. We have studied the spatial distributions of these receptors using LVSEM and backscatter imaging of isolated human neutrophils stained with mouse anti-receptor (primary) antibody and goat anti-mouse (secondary) antibody conjugated to 12 nm colloidal gold. This combination of techniques provides for three-dimensional analysis of the expression of these receptors on different surface membrane domains of the neutrophil: the ruffles and microvilli that project from the cell surface, and the cell body between these projecting structures.

Spatial Segregation Characteristics of Mok-Dong New Town

2017 ◽  
Vol 7 (2) ◽  
pp. 75-89
Author(s):  
Sun-Hye Bae ◽  
Hyo-Jin Kim
Keyword(s):  
Spatial Segregation ◽  
New Town

A renda fundiária urbana: uma categoria de análise ainda válida

GEOgraphia ◽  
2010 ◽  
Vol 10 (19) ◽  
pp. 24
Author(s):  
Adriano Botelho
Keyword(s):  
Real Estate ◽  
Urban Space ◽  
Capital Accumulation ◽  
Urban Land ◽  
Sao Paulo ◽  
Spatial Segregation ◽  
São Paulo ◽  
Land Rent ◽  
Investment Funds ◽  
The Real Estate

Resumo: Renda fundiária urbana é uma categoria pouco explorada pela maioria dos estudos mais recentes sobre o urbano. Porém, essa categoria oferece uma possibilidade de abordagem do urbano que permite a análise de fenômenos importantes, como a hierarquização dos usos do solo, o papel do setor imobiliário para a acumulação do capital e para a reprodução das relações de produção capitalistas, além de ser importante para o entendimento do processo de segregação sócio-espacial e fragmentação do espaço no urbano. Assim, levando-se em consideração os estudos passados e as dificuldades que ainda hoje permanecem, a questão da renda fundiária é retomada no presente artigo. Como forma de viabilização da análise da questão da renda fundiária urbana foi realizado um estudo de caso sobre uma modalidade de intervenção no urbano por parte do setor imobiliário em aliança com o mercado financeiro no município de São Paulo: os Fundos de Investimento Imobiliário e a Securitização de Recebíveis Imobiliários.  THE URBAN LAND RENT: A CATEGORY OF ANALYSIS STILL VALID Abstract: Urban land rent is a category little explored by most recent urban studies. However, this category offers a possible approach for urban space that allows the analysis of relevant phenomena, like hierarchy in land use, the role of the real estate industry for capital accumulation and for reproduction of relationships in capitalist production, besides its importance in understanding the socio-spatial segregation and fragmentation process. In this sense, taking into account earlier studies and difficulties that still remain, this article aims to analyse the problem of land rent. To make this analysis possible, we present a case study about a kind of urban intervention by real estate agents in association with the finance market in the city of São Paulo: Real Estate Investment Funds and Real Estate Bonus. Keywords: Urban Land Rent, Fragmentation, Socio-Spatial Segregation, Urban, Real Estate Financing, Reproduction of Capital.

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