Concept

Photosynthetic efficiency

Publications associées (58)

Photosynthesis in the kleptoplastidic foraminiferal species "Haynesina germanica"

Anders Meibom, Charlotte Madeleine Nicole Lekieffre, Emmanuelle Geslin

Poster ...

2014

Ecological response of trees to simulated climate change along an altitudinal gradient (CLIMARBRE)

Alexandre Buttler, Constant Signarbieux, María Paula Sanginés De Cárcer

Assessing the impacts of climate change on mountain ecosystems is challenging as it takes several decades to observe an ecological response. Using a transplantation experiment in the Swiss Jura Mountains we study the adaptability of beech and spruce to sim ...

2014

The ultrastructure of Chlorobaculum tepidum revealed by cryo-electron tomography

Henning Paul-Julius Stahlberg

Chlorobaculum (Cba) tepidum is a green sulfur bacterium that oxidizes sulfide, elemental sulfur, and thiosulfate for photosynthetic growth. As other anoxygenic green photosynthetic bacteria, Cba tepidum synthesizes bacteriochlorophylls for the assembly of ...

Elsevier BV2014

Experimental response of Salix cuttings to sudden water table changing dynamics

Alexandre Buttler, Paolo Perona, Pascal Turberg, Constant Signarbieux, Lorenzo Gorla

Hydropower production, agriculture and other human activities change the natural flow regime of rivers, in turn impacting the riparian environment. Inadequate flow rules (e.g., minimal or residual flows) reflecting our limited understanding of eco-hydrolog ...

2013

Carbon nanotubes quench singlet oxygen generated by photosynthetic reaction centers

László Forró, Arnaud Magrez, Endre Horvath, Klara Hernadi, Krisztina Nagy

Photosensitizers may convert molecular oxygen into reactive oxygen species (ROS) including, e.g., singlet oxygen (O-1(2)), superoxide anion (O-2(-center dot)), and hydroxyl radicals ((OH)-O-center dot), chemicals with extremely high cyto- and potential gen ...

Wiley-V C H Verlag Gmbh2013

The Response of the Mediterranean Gorgonian Eunicella singularis to Thermal Stress Is Independent of Its Nutritional Regime

Alexandre Buttler, Leïla Ezzat

Over the last few decades, sessile benthic organisms from the Mediterranean Sea have suffered from the global warming of the world's oceans, and several mass mortality events were observed during warm summers. It has been hypothesized that mortality could ...

Public Library Science2013

Nanostructured Photosystems for the Generation of Electricity and Fuels from Sunlight

Michael Graetzel

Learning from the concepts used by green plants photosynthesis, we have developed nanostructured systems affording efficient solar light harvesting and conversion to electricity and fuels. Solar cells using dyes or semiconducting nanoparticles as light har ...

Amer Inst Physics2013

Multi-objective, multi-period optimization of district energy systems: Networks design

François Maréchal, Samira Fazlollahi

Microalgae cultivation for biofuel conversion is widely treated in literature as it could allow reducing fossil fuel consumptions. One of the challenges of this technology is related to the high power and cost requirements for the harvesting and dewatering ...

Elsevier2013

A selective co-sensitization approach to increase photon conversion efficiency and electron lifetime in dye-sensitized solar cells

Michael Graetzel, Kazuteru Nonomura

Ruthenium-based C106 and organic D131 sensitizers have been judicially chosen for co-sensitization due to their complementary absorption properties and different molecular sizes. Co-sensitization yields a higher light-harvesting efficiency as well as bette ...

Royal Society of Chemistry2012

Effects of an extended drought period on physiological properties of grassland species in the field

Constant Signarbieux

A very high percentage (around 70%) of the agronomic area in Switzerland is covered by grasslands at various altitudes where environmental conditions, management, community structure and productivity vary widely. As heat waves and drought are predicted to ...

Springer Verlag2012

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