Results 61 to 70 of about 62,550 (298)
A new cell primo-culture method for freshwater benthic diatom communities [PDF]
, 2009 A new cell primo-culture method was developed for the benthic diatom community isolated from biofilm sampled in rivers. The approach comprised three steps: (1) scraping biofilm from river pebbles, (2) diatom isolation from biofilm, and (3) diatom ...
Silvestre, Jérôme +4 more
core +1 more source
Advanced Science, EarlyView.A new data‐efficient framework combining DFT calculations, a neural network model, and automated graph analysis of catalytic reaction networks is proposed and applied to CO2 hydrogenation on transition metal nanoparticles. The analysis shows how efficient C2 oxygenate production requires a balance between CHx formation, C–C coupling, protonation, and ...
Mikhail V. Polynski, Sergey M. Kozlov
wiley +1 more source
The Preparatory (Anti)Bonding Character of Molecular Orbitals
Advanced Science, EarlyView.Herein, a concept to qualitatively predict changes in bond dissociation energies upon reduction or oxidation of molecular compounds is introduced. Changing the population of so‐called preparatory molecular orbitals influences how molecular fragments are relaxing after bond cleavage, which is shown for isolated organometallic aluminum compounds as well ...
Jonas O. Wenzel +10 more
wiley +1 more source
Diatoms diversity and abundance in Iranian waters of the Persian Gulf, Bushehr area
Majallah-i ̒Ilmī-i Shīlāt-i Īrān, 2004 A survey on diatoms diversity and abundance conducted in Iranian waters of the Persian Gulf around Bushehr area in 2004. We used six transects each comprising three sampling stations and sampled diatoms seasonally and found that total diatoms diversity ...
M. Fatemi1; Gh. Vosoghi1; A. Nikoeian1; M. Fallahi2
doaj
PLoS ONEPhytoplankton face numerous pressures resulting from chemical and physical stressors, primarily induced by human activities. This study focuses on investigating the interactive effects of widely used antifouling agent Irgarol 1051 and UV radiation on the
Dongquan Bi +4 more
doaj +1 more source
Epipsammic diatoms in streams influenced by urban pollution, São Carlos, SP, Brazil
Brazilian Journal of BiologyEpipsammic diatoms have important implications for ecosystem processes in lotic environments. Most of the studies on benthic diatoms concentrate on epilithic diatoms and very little is known about epipsammic diatoms.
T. Bere, JG. Tundisi
doaj +1 more source
Toxic Effect of Metal Doping on Diatoms as Probed by Broadband Terahertz Time-Domain Spectroscopy
Molecules, 2022 The global marine environment is increasingly affected by human activities causing climate change, eutrophication, and pollution. These factors influence the metabolic mechanisms of phytoplankton species, such as diatoms.
Rohit Kumar +6 more
doaj +1 more source
Holocene development and anthropogenic disturbance of a shallow lake system in Central Ireland recorded by diatoms [PDF]
, 2007 Three cores from two connected lakes in Central Ireland (Lough Kinale and Derragh Lough) were investigated using diatom analysis to establish the Holocene development of the lacustrine system, any local variations within the lakes and any anthropogenic ...
Brown, A.G., Selby, K.A.
core +1 more source
Advanced Science, EarlyView.This work presents a magnetic‐bearing acoustic resonator that overcomes the thermodynamics limit of sound absorption. By introducing tunable negative stiffness, it achieves broadband low‐frequency absorption within a compact cavity, far exceeding the performance achievable by classic mass‐tuned designs.
Ying Hu +5 more
wiley +1 more source
Modeling Properties of Diatoms with Fibonacci Growth Using Lindenmayer Systems
PhycologyIn most cases, the sizes of the daughter cells of diatoms follow the MacDonald–Pfitzer rule, whereby in many species all diatoms divide once in each generation.
Thomas Harbich
doaj +1 more source