Results 101 to 110 of about 2,851,212 (303)

Dark carbon fixation in tropical-subtropical lagoon and bay regional intertidal sediments under the effect of vegetation: controlling factors and driving microorganisms

Frontiers in Marine Science
Coastal blue carbon ecosystems dominated by mangroves, salt marshes and seagrass beds are conventionally recognized as major carbon sources. Dark carbon fixation (DCF) by sediment chemoautotrophs also substantially contributes to sediment organic carbon (
Bo Yang, Bo Yang, Yao Guan, Yao Guan, Yao Guan, Weiqiang Zhao, Weiqiang Zhao, Weiqiang Zhao, Pengfei Zheng, Pengfei Zheng, Pengfei Zheng, Hao Liu   +11 more
doaj   +1 more source

Microbial communities in dark oligotrophic volcanic ice cave ecosystems of Mt. Erebus, Antarctica

Frontiers in Microbiology, 2015
The Earth’s crust hosts a subsurface, dark, and oligotrophic biosphere that is poorly understood in terms of the energy supporting its biomass production and impact on food webs at the Earth’s surface.
Bradley M. Tebo, Richard E. Davis, Roberto P. Anitori, Laurie B. Connell, Peter eSchiffman, Hubert eStaudigel   +5 more
doaj   +1 more source

A Geometrically Transient Platform for Bioelectronic Implants

Advanced Materials, EarlyView.
Minimally invasive bioelectronic implants often compromise performance for smaller sizes. To resolve this optimization dilemma, a wireless bioelectronic implant with a transient geometry is introduced (MiFi). The origami‐inspired device miniaturizes up to sixfold for syringe insertion and autonomously unfolds post‐implantation.
Selin Olenik, John D. Goodwin, Atharv Naik, Philip Coatsworth, Ioi Chit Cheung, Farbod Amirghasemi, Anies Sohi, Ehsan Abedi, Tayeb Tadlaoui, Maral P. S. Mousavi, Andriy S. Kozlov, Victoria Salem, Andrew S. Cowburn, Firat Guder   +13 more
wiley   +1 more source

Diazotrophs: An Overlooked Sink of N2O

Geophysical Research Letters
The ocean is the second‐largest source of greenhouse gas nitrous oxide (N2O). However, its role as an N2O sink is severely overlooked. N2O fixation by diazotrophs has lately been proposed as a new pathway of N2O consumption.
Himanshu Saxena, Shreya Mehta, Sipai Nazirahmed, Jitender Kumar, Sanjeev Kumar, Arvind Singh   +5 more
doaj   +1 more source

Benthic nitrogen fixation in Zostera marina meadows in an upwelling-influenced coastal lagoon

Ciencias Marinas, 2017
Dinitrogen (N2) fixation rates were determined in the phyllosphere and in sediments with and without the presence of eelgrass (Zostera marina) in San Quintín Bay, an upwelling-influenced coastal lagoon in the NE Pacific.
Julieta Hernández-López, Víctor F Camacho-Ibar, Alfonso Macías-Tapia, Karen J McGlathery, Luis W Daesslé, Jose M Sandoval-Gil   +5 more
doaj   +1 more source

Minor contribution of ammonia oxidizers to inorganic carbon fixation in the ocean

Nature Geoscience
Ammonia-oxidizing archaea are the most abundant chemolithoautotrophs in the ocean and are assumed to dominate carbon fixation below the sunlit surface layer.
Barbara Bayer, Katharina Kitzinger, N. Paul, Justine B. Albers, M. Saito, Michael Wagner, C. Carlson, A. Santoro   +7 more
semanticscholar   +1 more source

The Role of Metal Centres in Reduction and Carboxylation Reactions Utilizing Carbon Dioxide

, 1991
No ...
M. Aresta, I. Tommasi, QUARANTA, Eugenio
core  

From Fiber Bundles to Architected Membranes: Triply Periodic Minimal Surface Architectures for Biohybrid Artificial Lungs

Advanced Materials, EarlyView.
Additively manufactured triply periodic minimal surface (TPMS) membranes offer an architecture‐driven alternative to hollow fiber bundles in artificial lungs. Multiphysics simulations and endothelialized prototypes show that the 3D‐printable membrane architecture improves gas exchange, blood flow distribution, and hemocompatibility, enabling ...
Michael Pflaum, Kai P. Barbian, Florian Neuhaus, Gerrit Sitarz, Carolin Nölke, Sebastian V. Jansen, John Linkhorst, Lukas T. Hirschwald, Sebastian Brosch, Christian Certa, Ulrich Steinseifer, Matthias Wessling, Jutta Arens, Arjang Ruhparwar, Bettina Wiegmann   +14 more
wiley   +1 more source

Elastomeric 3D‐Printed Microenvironments Enable Nanonewton Force Measurements in Healthy and Diseased Human Pluripotent Stem Cell‐Derived Neuroepithelial Cells

Advanced Materials, EarlyView.
We present elastomeric three‐dimensional (3D) microstructures fabricated via two‐photon polymerization (2PP) and post‐processed through wet etching, for quantifying nanonewton (nN)‐scale forces applied by healthy and diseased neural cells. The mechanically characterized free‐standing beam architectures enable measurement of traction forces of ...
Pieter F. J. van Altena, Lucia Castillo Ransanz, Ruben H. Guis, Giulia Bergamaschi, Nanne J. Paauw, Urs Staufer, Vivi M. Heine, Angelo Accardo   +7 more
wiley   +1 more source

The Dark Fixation of Carbon Dioxide as a Factor in Photoperiodism [PDF]

Plant Physiology, 1954
R, Langston, A C, Leopold
openaire   +2 more sources