Results 91 to 100 of about 45,064 (208)

Translational Entanglement of Dipole-Dipole Interacting Atoms in Optical Lattices

open access: yes, 2003
We propose and investigate a realization of the position- and momentum-correlated Einstein-Podolsky-Rosen (EPR) states [Phys. Rev. 47, 777 (1935)] that have hitherto eluded detection.
Bimalendu Deb   +6 more
core   +1 more source

NANOMECHANICAL TESTING OF DIATOMS

open access: yes, 2012
A test scheme to test micro-beams from diatom frustule has been developed. The method is capable of testing both complete beams and beams made from the individual layers of the frustule. The biosilica is shown to be a very brittle material with an average fracture stress of 336 +- 73 MPa and a flexural modulus of 5.72 +- 2.9 GPa.
openaire   +1 more source

A whole‐lake experiment confirms a small centric diatom species as an indicator of changing lake thermal structure

open access: yesLimnology and Oceanography Letters, 2016
In many lakes across the Northern Hemisphere, paleolimnological records have revealed that the relative abundances of the small centric diatom, Discostella stelligera, changed over the past century, with these widespread shifts attributed to climate ...
Jasmine E. Saros   +3 more
doaj   +1 more source

Long-range interactions in the ozone molecule: spectroscopic and dynamical points of view

open access: yes, 2012
Using the multipolar expansion of the electrostatic energy, we have characterized the asymptotic interactions between an oxygen atom O$(^3P)$ and an oxygen molecule O$_2(^3\Sigma_g^-)$, both in their electronic ground state.
Béatrice Bussery-Honvault   +3 more
core   +3 more sources

Nanomechanical Testing of Diatoms

open access: yes, 2013
Diatoms, a major group of algea, are protected by a nanostructured shell, built with a design that exceeds the capabilities of human engineering. These shells, termed frustules, consist of biosilica and give the organism more than just a physicalarmor.
openaire   +1 more source

Taxonomic composition of epilithic diatoms and indicator role in freshwater pools and the effect of pollution in the Keban Dam lake, Turkey

open access: yesActa Scientiarum: Biological Sciences
The aim of this study is to determine the epilithic diatom flora of stations exposed to pollutants of different characteristics, to test the relationships of these diatoms with water quality and the suitability of environmental quality indicators, and ...
Vesile Yildirim, Selda Demirkapu
doaj   +1 more source

Report of the 2004 Workshop on In Situ Iron Enrichment Experiments in the Eastern and Western Subarctic Pacific [PDF]

open access: yes, 2006
Foreword 1. BACKGROUND AND OBJECTIVES (pdf, 0.1 Mb) 2. 2004 WORKSHOP SUMMARY (pdf, < 0.1 Mb) 2.1. What have we learned from the enrichment experiments? 2.2 What are the outstanding questions? 2.3 Recommendations for SEEDS-II
Takeda, Shigenobu, Wong, C.S.
core  

The distribution of cytoplasmic microtubules throughout the cell cycle of the centric diatom Stephanopyxis turris: their role in nuclear migration and positioning the mitotic spindle during cytokinesis. [PDF]

open access: yes, 1986
The cell cycle of the marine centric diatom Stephanopyxis turris consists of a series of spatially and temporally well-ordered events. We have used immunofluorescence microscopy to examine the role of cytoplasmic microtubules in these events.
Cande, WZ, McDonald, KL, Wordeman, L
core  

Settlement of Macoma balthica larvae in response to benthic diatom films [PDF]

open access: yes
The role of multi-species benthic diatom films (BDF) in the settlement of late pediveliger larvae of the bivalve Macoma balthica was investigated in still-water bioassays and multiple choice flume experiments.
Backer, A., De   +6 more
core   +2 more sources

Nanomechanical Fracture Testing of Diatoms

open access: yes, 2015
A way to test the fracture properties of the foramen layer has been developed and tested. Cantilevers made out of the diatom silica were produced with the Focused Ion Beam (FIB). These had notches milled close to the base of the cantilever and were then loaded to fracture using a picoindenter.
openaire   +1 more source

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