Results 71 to 80 of about 318,672 (278)

Stoichiometry on the edge—humans induce strong imbalances of reactive C:N:P ratios in streams

Environmental Research Letters, 2023
Anthropogenic nutrient inputs led to severe degradation of surface water resources, affecting aquatic ecosystem health and functioning. Ecosystem functions such as nutrient cycling and ecosystem metabolism are not only affected by the over-abundance of a
Alexander Wachholz, Joni Dehaspe, Pia Ebeling, Rohini Kumar, Andreas Musolff, Felipe Saavedra, Carolin Winter, Soohyun Yang, Daniel Graeber   +8 more
doaj   +1 more source

Raman Spectroscopic Identification of Oxide Phases in a Corroded MgO–Steel Composite Anode Used in Aluminum Molten Salt Electrolysis

Advanced Engineering Materials, EarlyView.
Micro‐Raman spectroscopy is applied to characterize corrosion products in a recycled‐based MgO–316L steel composite anode after molten salt electrolysis. A depth‐dependent Fe–O/Fe–Al–O layer sequence of magnetite, hercynite, and an Al‐doped magnetite transition zone is identified.
Felix Drechsler, Serhii Yaroshevskyi, Alexander Adamczyk, Mahnaz Mehdizadehlima, Julia Richter, Cameliu Himcinschi, David Rafaja, Alexandros Charitos, Christos G. Aneziris, Jens Kortus   +9 more
wiley   +1 more source

The Temperature Dependence of Predation Stress and Prey Nutritional Stoichiometry

Frontiers in Ecology and Evolution, 2017
Prey at risk of predation may experience stress and respond physiologically by altering their metabolic rates. Theory predicts that such physiological changes should alter prey nutrient demands from N-rich to C-rich macronutrients and shift the balance ...
Oswald J. Schmitz, Adam E. Rosenblatt
doaj   +1 more source

Reactions of technetium hexafluoride with nitric acid, nitrosyl fluoride, and nitryl fluoride [PDF]

, 1970
Stoichiometry of technetium hexafluoride reactions is studied. Magnetic properties and infrared spectra of reaction products are studied and compared with those of analogous complexes of the hexafluorides of tungsten, rhenium, and ...
Holloway, J. H., Selig, H.
core   +1 more source

Size Dependence of Metal-Insulator Transition in Stoichiometric Fe3O4 Nanocrystals

, 2015
Magnetite (Fe3O4) is one of the most actively studied materials with a famous metal-insulator transition (MIT), so-called the Verwey transition at around 123 K. Despite the recent progress in synthesis and characterization of Fe3O4 nanocrystals (NCs), it
Banin U., Bednorz J. G., Blasco J., Chen C.-C., Couchman P. R., de Jong S., Disch S., Friedrich W., Goldstein A. N., Ho D., Jacobs K., Je-Geun Park, Jisoo Lee, Jun Y.-w., Jun Y.-w., Kang Y., Kim T. H., Lang X. Y., Laurent S., Lee N., Lee N., Lee S., Lee S., Lu A.-H., Noh S.-h., Park J., Park J., Polking M. J., Rao C. N. R., Redl F. X., Senn M. S., Senn M. S., Shepherd J. P., Soon Gu Kwon, Stanley S. A., Sun S., Sun S., Taeghwan Hyeon, Verwey E. J., Waser R., Wright J. P., Xie J., Zeng H., Zhang D.   +43 more
core   +1 more source

Resistance Rapid Heating of Aluminum Coatings in an Extreme High Vacuum–Adequate Atmosphere for Hot Stamping

Advanced Engineering Materials, EarlyView.
The subject of this work is the development of a corrosion‐protective coating on steel sheets for form hardening. Rapid heating in an extreme high vacuum (XHV)‐adequate atmosphere is a useful method to prevent oxidation during alloying of 22MnB5 and aluminum to obtain a metallurgical bonding.
Lorenz Albracht, Alexander Schnettger, Ulrich Holländer, Sven Hübner, Bernd‐Arno Behrens, Hans Jürgen Maier   +5 more
wiley   +1 more source

The evolution of per-cell organelle number

Frontiers in Cell and Developmental Biology, 2016
Organelles with their own distinct genomes, such as plastids and mitochondria, are found in most eukaryotic cells. As these organelles and their host cells have evolved, the partitioning of metabolic processes and the encoding of interacting gene ...
Logan W. Cole
doaj   +1 more source

Novel Rubidium Poly-Nitrogen Materials at High Pressure

, 2017
First-principles crystal structure search is performed to predict novel rubidium poly-nitrogen materials at high pressure by varying the stoichiometry, i. e. relative quantities of the constituent rubidium and nitrogen atoms.
Oleynik, van I., Steele, Brad A., Williams, Ashley S.   +2 more
core   +1 more source

Rafting of Ni‐Based Superalloys Under Multiaxial Load as Understood by Phase‐Field Simulations and Critical Experiments

Advanced Engineering Materials, EarlyView.
Phase‐field simulations coupled with dislocation‐density‐based crystal plasticity modeling reproduce γ′ rafting behavior in single‐crystal Ni‐based superalloys under varied loading conditions. The model captures both macroscopic creep and microscopic morphology evolution, with results matching high‐temperature creep experiments.
Micheal Younan, David Bürger, Gunther Eggeler, Oleg Shchyglo, Ingo Steinbach, Muhammad Adil Ali   +5 more
wiley   +1 more source

Use of GC-IMS and Stoichiometry to Characterize Flavor Volatiles in Different Parts of Lueyang Black Chicken during Slaughtering and Cutting

Foods
Chilled and cut chicken is preferred by consumers for its safeness and readiness to cook. To evaluate the quality characteristics of various chilled chicken products, differences in volatile organic components (VOCs) of six different cut parts (breast ...
Linlin He, Hui Yang, Fei Lan, Rui Chen, Pengfei Jiang, Wengang Jin   +5 more
doaj   +1 more source