Tree water uptake relies on well-developed root systems. However, mine wastes can restrict root growth, in particular metalliferous mill tailings, which consist of the finely crushed ore that remains after valuable metals are removed. Thus, water stress could limit plantation success in reclaimed mine lands. This study evaluates the effect of substrates varying in quality (topsoil, overburden, ...

BACKGROUND Patients undergoing facedown positioning have to overcome physical and psychological challenges; however, their perspective and experience are rarely documented in the research literature. OBJECTIVES The objective of this study was to examine the content of a self-motivated diary written by a person who underwent 77 days of facedown positioning after macular hole surgery. Her narra...

Diffuse competition due to niche overlap between actors without (direct) ties with each other, constrains their structural autonomy. This is not dealt with in Burt’s mathematical model of his well-known structural holes theory. We fix his model by introducing a network measure of niche overlap. © 2002 Elsevier Science B.V. All rights reserved. JEL classification: L0; L1

plane and mulberry trees play a crucial role in purifying the polluted air in tehran as a majorcity. in this research, 13 main districts of tehran city were chosen as study area. 20 completely healthy planeand mulberry species were selected in similar ecological conditions and age range. the uptake of cd and pbwas determined using spectrophotometry, whereas the chlorophyll content was measured ...

I review scenarios for the assembly of supermassive black holes (MBHs) at the center of galaxies that trace their hierarchical build-up far up in the dark matter halo “merger tree”. Monte Carlo realizations of the merger hierarchy in a ΛCDM cosmology, coupled to semi-analytical recipes, are a powerful tool to follow the merger history of halos and the dynamics and growth of the MBHs they host. ...

The paper investigates the effects of collaboration networks on inventive productivity within an industrial research environment. A distinction is made between two kinds of network structures: structural holes offering information brokerage opportunities to individuals and network closures supporting co-specialization of individuals. Hypotheses regarding the effects of network positions on the ...

We presented a case of full-thickness macular hole progressing into lamellar macular hole as seen in the spectral domain optical coherence tomography. Short review of the literature regarding the pathogenesis of lamellar hole was presented and discussed.

Despite prolific research on IT business value, this stream of research still encounters considerable limitations such as inconsistent findings of the direct link between IT and firm profitability and the demonstration of the indirect relationship between IT and specific aspects of firm value without explicitly considering network environments. To overcome the limitations caused by utilizing th...

evaluated under laboratory condition. the objective of the present study was to observe the effect of impregnated torn bednets on the number of bites by an. culicifacies a glass made tunnel test was designed to the effect of torn bednets treated with three dosages of cyfluthrin 5% ew, were induce hungry female mosquitoes to pass through holes cut in the pyrethroid treated nets. a guinea pig use...