Results 111 to 120 of about 3,059,614 (345)

Estimates of micro-, nano-, and picoplankton contributions to particle export in the northeast Pacific [PDF]

Biogeosciences, 2015
The contributions of micro-, nano-, and picoplankton to particle export were estimated from measurements of size-fractionated particulate 234Th, organic carbon, and phytoplankton indicator pigments obtained during five cruises between 2010 and 2012 ...
B. L. Mackinson, S. B. Moran, M. W. Lomas, G. M. Stewart, R. P. Kelly   +4 more
doaj   +1 more source

Atriplex mollis desf. Aerial parts: extraction procedures, secondary metabolites and color analysis [PDF]

, 2018
A method using high-performance liquid chromatography coupled with a photodiode array detector was proposed for the rapid characterization of different phenolic constituents from the extracts of Atriplex mollis aerial parts.
Benayache, Fadila, Benayache, Samir, Boutaoui, Nassima, Cacciagrano, Francesco, Campestre, Cristina, Carradori, Simone, Cesa, Stefania, Giusti, Anna Maria, Locatelli, Marcello, Menghini, Luigi, Secci, Daniela, Zaiter, Lahcene   +11 more
core   +1 more source

A Bio‐Inspired Perspective on Materials Sustainability

Advanced Materials, EarlyView.
This perspective discusses natural materials as inspiration for sustainable engineering designs and the processing of materials. First, circularity, longevity, parsimony, and activity are presented as essential material paradigms. The perspective then uses many examples of natural and technical materials to introduce principles such as oligo ...
Wolfgang Wagermaier, Khashayar Razghandi, Peter Fratzl   +2 more
wiley   +1 more source

SciAgents: Automating Scientific Discovery Through Bioinspired Multi‐Agent Intelligent Graph Reasoning

Advanced Materials, EarlyView.
The SciAgents AI model drives hypothesis generation by harnessing multi‐agent graph reasoning, extracting insights from knowledge graphs constructed from scientific papers. Each agent plays a specific role: the Ontologist defines concepts, the Scientists draft and refine proposals, and the Critic reviews.
Alireza Ghafarollahi, Markus J. Buehler
wiley   +1 more source

Full quantum dynamics of the electronic coupling between photosynthetic pigments [PDF]

arXiv, 2015
From studying the time evolution of the single electron density matrix within a density functional tight-binding formalism we study in a fully atomistic picture the electronic excitation transfer between two photosynthetic pigments in real time. This time-dependent quantum dynamics is based on fully atomistic structural models of the photosynthetic ...
arxiv  

Hyperspectral remote sensing of cyanobacterial pigments as indicators for cell populations and toxins in eutrophic lakes [PDF]

, 2010
The growth of mass populations of toxin-producing cyanobacteria is a serious concern for the ecological status of inland waterbodies and for human and animal health.
Alder-Golden, Alikas, Andrew N. Tyler, Bennett, Bricaud, Bricaud, Brient, Brierley, Buiteveld, Carmichael, Carvalho, Codd, Codd, Codd, Cooley, Dall'Olmo, Dall'Olmo, Dall'Olmo, Dekker, Ferguson, Fogg, Geoffrey A. Codd, Gitelson, Gons, Gons, Gons, Gons, Gordon, Guanter, Havens, Hillebrand, Hunter, Hunter, Hunter, Izydorczyk, Jiang, John, Johnk, Karpouzli, Kaufman, Kutser, Kutser, Kutser, Laurence Carvalho, Lorenzen, Matthews, Metcalf, Metcalf, Metcalf, Mittenzwey, Mittenzwey, Mueller, Nair, Paerl, Patel, Pearson, Peter D. Hunter, Pilotto, Ramos, Randolph, Rantajarvi, Rapala, Raps, Reinart, Ruiz-Verdu, Sarada, Sathyendranath, Schalles, Simis, Simis, Smyth, Stephen C. Maberly, Stuffler, Tomlinson, Tyler, Tyler, Westberry, WHO, WHO, Wiedner   +79 more
core   +2 more sources

Pioneering the Future: Principles, Advances, and Challenges in Organic Electrodes for Aqueous Ammonium‐Ion Batteries

Advanced Materials, Volume 37, Issue 13, April 2, 2025.
Leveraging the numerous advantages of ammonium‐ion (NH₄⁺)—including cost‐effectiveness, low corrosiveness, preferential orientation, and rapid diffusion kinetics—aqueous NH₄⁺ batteries (AAIBs) have gained significant attention. This review highlights and evaluates the progress of AAIBs utilizing organic electrode materials such as small molecules ...
Mangmang Shi, Xiaoyan Zhang
wiley   +1 more source

Properties of cyanobacterial UV-absorbing pigments suggest their evolution was driven by optimizing photon dissipation rather than photoprotection [PDF]

arXiv, 2017
An ancient repertoire of UV absorbing pigments which survive today in the phylogenetically oldest extant photosynthetic organisms the cyanobacteria point to a direction in evolutionary adaptation of the pigments and their associated biota from largely UVC absorbing pigments in the Archean to pigments covering ever more of the longer wavelength UV and ...
arxiv  

The fundamental role of quantized vibrations in coherent light harvesting by cryptophyte algae

, 2012
The influence of fast vibrations on energy transfer and conversion in natural molecular aggregates is an issue of central interest. This article shows the important role of high-energy quantized vibrations and their non-equilibrium dynamics for energy ...
Kolli, Avinash, O'Reilly, Edward J., Olaya-Castro, Alexandra, Scholes, Gregory D.   +3 more
core   +1 more source

Remote Sensing of Chiral Signatures on Mars [PDF]

, 2012
We describe circular polarization as a remote sensing diagnostic of chiral signatures which may be applied to Mars. The remarkable phenomenon of homochirality provides a unique biosignature which can be amenable to remote sensing through circular ...
Barron, Carpenter, Cockell, Cockell, Costerton, Davey, Degtiarev, Frank Robb, Hall-Stoodley, Hough, James H. Hough, Kelly, Kemp, Landis, Litchfield, Ludmilla Kolokolova, Malin, Martin, Mumma, Norris, Osterloo, Purdie, Sazonov, Shapiro, Sparks, Sparks, Sparks, Thomas A. Germer, Wierzchos, William Sparks, Zahnle   +30 more
core   +2 more sources