Results 41 to 50 of about 519,930 (304)

Electro-Chemical Modeling Challenges of Biological Ion Pumps [PDF]

Journal of Computational Electronics, 2005
We outline the basic operational, structural and functional features of ion motive ATPases: transmembrane proteins central to biological functions of all animal cells. As an example we discuss the modeling problems associated with the operation of the surface membrane Na(+),K(+)-ATPase and skeletal muscle sarcoplasmic reticulum Ca(2+)-ATPase and focus ...
Robert F, Rakowski, Savas, Kaya, James, Fonseca   +2 more
openaire   +2 more sources

Identifying Saharan dust driven export of biogenic material in the ultraoligotrophic eastern Mediterranean Sea

Frontiers in Marine Science
To assess the effects of dust deposition on the strength of the biological pump in the Mediterranean Sea by acting as fertilizer and/or ballasting agent, we analyzed fluxes of mineral dust, particulate organic carbon (POC) and inorganic carbon (PIC), and
Anouk P. E. van Boxtel, Anouk P. E. van Boxtel, Jan-Berend W. Stuut, Jan-Berend W. Stuut, Francien Peterse   +4 more
doaj   +1 more source

A General control mechanism of energy flow in the excited state of polyenic biochromophores. [PDF]

, 2011
Quantum dynamics in photobiology is a highly controversial subject of modern research. In particular, the role of low-frequency vibrational coherence of biochromophores has been intensely discussed.
Abramavicius, Assion, Bardeen, Bardeen, Brumer, Buckup, Buckup, Buckup, Buckup, Buckup, Christopher, Daniel, Dietzek, Fuss, Hauer, Hauer, Hauer, Herek, Hornung, Ishizaki, Judith Voll, Jürgen Hauer, Kuroda, Levis, Marcus Motzkus, Motzkus, Oberle, Polivka, Polivka, Prokhorenko, Prokhorenko, Prokhorenko, Rabitz, Regina Vivie-Riedle, Savolainen, Spanner, Sussman, Tiago Buckup, Tian, Vogt, Voll, Weiner, Wohlleben, Wollenhaupt, Zeidler   +44 more
core   +1 more source

Drivers and fluxes of dissolved organic carbon along the northern Antarctic Peninsula during late summer [PDF]

Anais da Academia Brasileira de Ciências
Dissolved organic carbon (DOC) is a key component of the biogeochemical carbon cycle in the Southern Ocean. However, there are still significant gaps in understanding the role of DOC in polar environments, due to the limitations of spatiotemporal ...
RAQUEL AVELINA, LETICIA C. DA CUNHA, RODRIGO KERR, CÁSSIA O. FARIAS, CLAUDIA HAMACHER, MAURICIO M. MATA   +5 more
doaj   +1 more source

Temporal and regional variabilities in the attenuation of sinking particulate organic carbon in the Kuroshio region

Frontiers in Marine Science, 2022
The biological pump that transports carbon from the surface ocean to the ocean interior is an important determinant of ocean carbon absorption from the atmosphere, and of biological activity beneath the euphotic zone.
Hideki Fukuda, Kiyotaka Hidaka, Takashi Setou, Akira Kusaka, Daisuke Ambe, Hiroaki Saito   +5 more
doaj   +1 more source

Modelocked mid-infrared frequency combs in a silicon microresonator

, 2016
Mid-infrared (mid-IR) frequency combs have broad applications in molecular spectroscopy and chemical/biological sensing. Recently developed microresonator-based combs in this wavelength regime could enable portable and robust devices using a single ...
Griffith, Hansson, Herr, Lau, Luke, Okawachi, Saha, Savchenkov, Schliesser, Shankar, Wang   +10 more
core   +1 more source

Microscopy with undetected photons in the mid-infrared [PDF]

, 2020
Owing to its capacity for unique (bio)-chemical specificity, microscopy withmid-IR illumination holds tremendous promise for a wide range of biomedical and industrial applications.
Avery, Ellen G., Bartolomaeus, Hendrik, Chrzanowski, Helen M., Kviatkovsky, Inna, Ramelow, Sven   +4 more
core   +2 more sources

Estimating Carbon Flux From Optically Recording Total Particle Volume at Depths Below the Primary Pycnocline

Frontiers in Marine Science, 2019
Optical instruments can rapidly determine numbers and characteristics of water column particles with high sensitivity. Here we show the usefulness of optically assessed total particle volume below the main pycnocline to estimate carbon export in two ...
Alexander B. Bochdansky, Robert B. Dunbar, Dennis A. Hansell, Gerhard J. Herndl, Gerhard J. Herndl   +4 more
doaj   +1 more source

Numerical analysis of the fluid-structure interaction in a membrane pump [PDF]

, 2010
In this research, the fluid-structure interaction in a recently developed membrane pump is analysed. The governing equations for the laminar flow and for the deformation of the membrane are solved with two separate codes, which are coupled with the quasi-
Annerel, Sebastiaan, Bols, Joris, Degroote, Joris, Taelman, Liesbeth, Vierendeels, Jan   +4 more
core   +2 more sources

Research progress in calculating net community production of marine ecosystem by remote sensing

Frontiers in Marine Science, 2023
Net community production (NCP) is defined as the difference between gross primary production (GPP) and total community respiration (R). NCP indicates the balance between the production and consumption of community organic carbon, therefore making it a ...
Yingqi Wang, Kui Wang, Kui Wang, Yan Bai, Di Wu, Hao Zheng   +5 more
doaj   +1 more source