Results 141 to 150 of about 381,962 (304)
The evaluation of loop amplitudes via differential equations
, 2004 The evaluation of loop amplitudes via differential equations and harmonic polylogarithms is discussed at an introductory level. The method is based on evolution equations in the masses or in the external kinematical invariants and on a proper choice of ...
Aglietti, U.
core
Physik in unserer Zeit, EarlyView.Mit Hilfe der ultrahellen Röntgenpulse des European XFEL und einem speziellen Hochenergielaser konnte die Struktur von flüssigem Kohlenstoff bei Drücken von über einer Million Atmosphären und Temperaturen von etwa 7000 K bestimmt werden. Dieser Ansatz offenbarte eine komplexe Flüssigkeit mit einer wasserähnlichen Struktur und im Mittel vier ...
Dominik Kraus, Ulf Zastrau
wiley +1 more source
PLANTS, PEOPLE, PLANET, EarlyView.Biodiversity loss threatens ecosystem services and human well‐being. Understanding the extent and causes of changes in biodiversity over time can help protect species and their habitats. Herbaria house carefully documented and curated specimens collected by generations of botanists.
Gabriel F. Ulrich +4 more
wiley +1 more source
PLANTS, PEOPLE, PLANET, EarlyView.Climate change and the growing demand for renewable energy are putting increasing pressure on land, as food production and solar power generation often compete for the same areas. In this study, we assessed which temperate‐region crops are best suited for agrivoltaics, a technology combining farming and solar electricity production on the same land. We
Salome Hauger +6 more
wiley +1 more source
Sustainable Development, EarlyView.ABSTRACT Geopolitical conflicts are increasingly threatening global food security, economic stability, and peace, impacting Tanzania's tea agrifood system. This study develops a quantitative Resource Nexus‐based system dynamics simulation model assessing the feedbacks and interdependencies among key environmental and socioeconomic resources shaping ...
Ally Mkumbukiy +3 more
wiley +1 more source
Enhancing Charge Transport and Extraction in Ta3N5 Photoanodes Via Ti Doping and TiN Contact Layers
Small, EarlyView.Ta3N5${\rm Ta}_3{\rm N}_{5}$ is a promising photoanode for solar water splitting but suffers from poor charge transport and interfacial losses. We combine Ti compensation doping with ultrathin TiN back‐contact interlayers to suppress bulk recombination, enhance carrier mobility and lifetime, and enable efficient carrier extraction, yielding ...
Laura I. Wagner +8 more
wiley +1 more source
The Role of Interfacial Energetics and Defects on The Efficiency of Tin Perovskite Solar Cells
Small, EarlyView.ABSTRACT Tin perovskites are emerging as a sustainable alternative to lead‐based photovoltaics, yet their efficiency remains limited by energy‐level mismatch and intrinsic instability from tin oxidation. Progress is further hindered by inconsistent electrical behavior, obscuring the true bottlenecks of device performance.
Mahmoud H. Aldamasy +15 more
wiley +1 more source
Small, EarlyView.The emerging BaCu2Se2 semiconductor compound is synthesized in combinatorial thin film libraries for fast screening of its fundamental properties related to the application in sustainable energy sources. Ba‐rich and Cu‐rich compositions are explored.
Marin Rusu +16 more
wiley +1 more source
8. Internationales Energie-Forum: Marktkonforme Durchsetzung erneuerbarer Energie
Technikfolgenabschätzung – Theorie und Praxis, 1998 TATuP Redaktion
doaj +1 more source
Emergent Chaos‐Like Dynamics of Spin–Orbit‐Torque‐Driven Magnetic Transitions
Small, EarlyView.By combining anisotropy‐engineered nanometer‐scale nucleation sites with time‐resolved x‐ray holography and micromagnetic modeling, magnetization dynamics are directly imaged, revealing chaos‐like fluctuations and skyrmion shedding and highlighting the intrinsic complexity of spin‐orbit torque driven systems.
L.‐M. Kern +14 more
wiley +1 more source