Results 11 to 20 of about 1,303,085 (296)

Soil attributes drive nest-site selection by the campo miner Geositta poeciloptera. [PDF]

open access: yesPLoS ONE, 2018
Substrate type is a key-factor in nest-site selection and nest architecture of burrowing birds. However, little is known about which factors drive nest-site selection for these species, especially in the tropics.
Ricardo Camargos de Meireles   +5 more
doaj   +1 more source

Contribution to the knowledge of the soils formed on limestones on the Ozren Mountain [PDF]

open access: yesZemljište i biljka, 2023
Soils formed on limestones occupy large area in Serbia, but there is not a lot of information about their properties. This paper presents physical and chemical properties of the Brownized Calcomelanosols and Moderately-deep Calcocambisols of the Ozren ...
Gajić Boško   +5 more
doaj   +1 more source

Quantum creation and inflationary universes: a critical appraisal [PDF]

open access: yes, 2000
We contrast the possibility of inflation starting a) from the universe's inception or b) from an earlier non-inflationary state. Neither case is ideal since a) assumes quantum mechanical reasoning is straightforwardly applicable to the early universe ...
A. Albrecht   +76 more
core   +3 more sources

Design, synthesis, anticancer activity and docking studies of novel quinazoline-based thiazole derivatives as EGFR kinase inhibitors

open access: yesHeliyon, 2023
The in vitro anticancer efficacy of a new series of quinazoline-based thiazole derivatives was explored. Three cancer cell lines, MCF-7, HepG2, and A548, as well as the normal Vero cell lines, were tested employing the synthesized quinazoline-based ...
M.S. Raghu   +7 more
doaj   +1 more source

Pure Gauss–Bonnet NUT black hole with and without non-central singularity

open access: yesEuropean Physical Journal C: Particles and Fields, 2021
It is known that NUT solution has many interesting features and pathologies like being non-singular and having closed timelike curves. It turns out that in higher dimensions horizon topology cannot be spherical but it has instead to be product of 2 ...
Sajal Mukherjee, Naresh Dadhich
doaj   +1 more source

Effective Lagrangian for Quantum Black Holes [PDF]

open access: yes, 1995
We discuss the most general effective Lagrangian obtained from the assumption that the degrees of freedom to be quantized, in a black hole, are on the horizon. The effective Lagrangian depends only on the induced metric and the extrinsic curvature of the
Alessandra Buonanno   +44 more
core   +3 more sources

The quantitative soil pit method for measuring belowground carbon and nitrogen stocks [PDF]

open access: yes, 2012
Many important questions in ecosystem science require estimates of stocks of soil C and nutrients. Quantitative soil pits provide direct measurements of total soil mass and elemental content in depth-based samples representative of large volumes ...
Black T.   +14 more
core   +2 more sources

Clinical Evaluation of Micro-Embolic Activity with Unexpected Predisposing Factors and Performance of Horizon AF PLUS during Cardiopulmonary Bypass

open access: yesMembranes, 2022
Background: During Cardiopulmonary Bypass (CPB) gaseous micro-emboli (GMEs) decrease the quality of the blood flow and the capillary oxygen delivery, increasing the incidence of postoperative neurocognitive disorders (POCD) following cardiac surgery.
Ignazio Condello   +5 more
doaj   +1 more source

Wormhole as the end state of two-dimensional black hole evaporation [PDF]

open access: yes, 1999
We present a specific two-dimensional dilaton gravity model in which a black hole evaporates leaving a wormhole at the end state. As the black hole formed by infalling matter in a initially static spacetime evaporates by emitting Hawking radiation, the ...
Kim, S. -W., Lee, H.
core   +2 more sources

Mineralogia, micromorfologia e gênese de solos planossólicos do Sertão do Araripe, estado de Pernambuco Mineralogy, micromorphology and genesis of soils with stagnic properties from Sertão of Araripe, Pernambuco State, Brazil

open access: yesRevista Brasileira de Ciência do Solo, 2004
Neste trabalho, objetivou-se realizar a caracterização mineralógica e micromorfológica de solos planossólicos do Sertão do Araripe, estado de Pernambuco, visando proporcionar melhor entendimento de suas propriedades e dos processos envolvidos em sua ...
L. B. Oliveira   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy