Results 131 to 140 of about 185,610 (340)

Factors influencing the emigration of juvenile Bonga from the Cross River estuary [PDF]

open access: yes, 2005
Studies were conducted to identify and quantify the proximate factors responsible for the emigration of juvenile bonga Ethmalosa fimbriata (Bowdich, 1825) from the Cross River estuary.
Akpan, E.R.   +2 more
core  

Long-range three-body atom-diatom potential for doublet Li${}_3$

open access: yes, 2012
An accurate long-range {\em ab initio} potential energy surface has been calculated for the ground state ${}^2A'$ lithium trimer in the frozen diatom approximation using all electron RCCSD(T).
Axilrod   +35 more
core   +1 more source

Water Window Ptychographic Imaging with Characterized Coherent X-rays [PDF]

open access: yes, 2015
We report on a ptychographical coherent diffractive imaging experiment in the water window with focused soft X-rays at $500~\mathrm{eV}$. An X-ray beam with high degree of coherence was selected for ptychography at the P04 beamline of the PETRA III ...
Dzhigaev, Dmitry   +10 more
core   +2 more sources

A free ride: Diatoms attached on motile diatoms

open access: yes, 2021
Periphytic diatoms are known to attach to a wide variety of submerged substrates. This review deals with a very particular substrate that consists of large benthic and motile diatoms. It is about passively motile epidiatomic diatoms. Their mode of attachment is similar to that of epiphytes on macrophytes, so they are also referred to as epiphytes, with
Roubeix, Vincent, Laviale, Martin
openaire   +3 more sources

Carbon‐Supported Dual‐Nickel Atom Catalysts With Stabilized Ni─N3 Active Sites for Efficient CO2 Electroreduction

open access: yesCarbon Energy, EarlyView.
Dual‐nickel atom catalysts (Ni‐DACs) are developed to stabilize unsaturated Ni─N3 atomic sites by constructing N3Ni─NiN3 dual‐atom structures from coal. Benefiting from the modulated electronic structure that optimizes intermediate adsorption, Ni‐DACs outperform Ni‐SACs in CO2 electroreduction, achieving a max FECO of 98.6% at −0.8 V vs RHE and a TOF ...
Jiabao Niu   +8 more
wiley   +1 more source

Ambident Reactivity in the Phenyl + NO Radical Recombination

open access: yesChemistry – A European Journal, EarlyView.
ABSTRACT The recombination reaction of nitric oxide (NO) with radicals via its oxygen atom, rather than the more common nitrogen site, offers an intriguing pathway to the formation of oxynitrenes. The photochemical isomerization of nitroso compounds into their corresponding oxynitrenes may involve such a step.
Virinder Bhagat   +3 more
wiley   +1 more source

Investigation of Tribological Performances for Porous Structure of Diatom Frustule with FSI Method

open access: yesAdvances in Condensed Matter Physics, 2014
Tribological performances of the diatom frustule are investigated with the liquid-solid interaction (FSI) method. Take, for example, the representative Coscinodiscus sp.
Fanming Meng, Guixiang Gao, TingTing Li
doaj   +1 more source

Use of benthic diatom indices for assessing ecological status of the Sai Gon river, Vietnam

open access: yesVietnam Journal of Science, Technology and Engineering, 2018
In the present study, the Biological diatom index (BDI) and the Trophic diatom index (TDI) were calculated for the assessment the ecological status and the water quality of the Sai Gon river in comparison with the physico-chemical variables. In addition,
Thanh Luu Pham
doaj   +1 more source

Diatom-Specific Oligosaccharide and Polysaccharide Structures Help to Unravel Biosynthetic Capabilities in Diatoms

open access: yesMarine Drugs, 2015
Diatoms are marine organisms that represent one of the most important sources of biomass in the ocean, accounting for about 40% of marine primary production, and in the biosphere, contributing up to 20% of global CO2 fixation.
B. Gügi   +5 more
semanticscholar   +1 more source

Investigation of microalgal tolerance and growth in simulated tailings pond water containing naphthenic acids

open access: yesThe Canadian Journal of Chemical Engineering, EarlyView.
Abstract Oil sands tailings ponds, such as those in northeastern Alberta, present environmental challenges due to slow sedimentation, water entrapment, and toxic naphthenic acids (NAs), which hinder water reclamation. This study assessed the tolerance and biodegradation potential of Chlorella vulgaris (C.
Amin Kalbasi, Amarjeet Bassi
wiley   +1 more source

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