Results 181 to 190 of about 18,257,705 (233)

Food Security Versus Environmental Health: The Nitrogen Dilemma

open access: yesJournal of Plant Nutrition and Soil Science, EarlyView.
ABSTRACT Nitrogen is an essential element for plant growth and, consequently, crop production. However, the cycling of nitrogen in the environment can have negative effects. Here, we review the historical development of scientific and public awareness of these effects and the influence this has had on political action to control them.
Henrike Mielenz   +8 more
wiley   +1 more source

Geochronological reconstruction of the Lateglacial deglaciation in the Arve Valley (Northern French Alps)

open access: yesJournal of Quaternary Science, EarlyView.
ABSTRACT The timing and spatial patterns of glaciers retreat in the Northern French Alps during the Lateglacial (19.0–11.7 ka) remain debated, reflecting discrepancies among available chronological data sets. The complex interactions between major glaciers, such as the Rhône and Arve glaciers to the north and the Isère glacier to the south, represent a
Quentin Portal   +3 more
wiley   +1 more source

CAFÉ COM PAULO FREIRE CANOAS [PDF]

open access: yes, 2022
Leal, Marina Lima; Café com Paulo Freire Canoas/RS   +2 more
core  

Models of DG‐Carbon Bands in Raman Spectra: Effects of Basis Functions and Initial Values on the Uniqueness and S/N of Fits Obtained for Atmospheric Aerosol Using Automated Methods

open access: yesJournal of Raman Spectroscopy, EarlyView.
Raman spectra containing D/G features are fit using combinations of basis functions and initial conditions. Fits with two Lorentzian functions converged to a single optimized fit even with variation of initial peak positions. For five‐band fits, sometimes the final fit varied with initial conditions, and constraints on peak center position were ...
David C. Doughty, Steven C. Hill
wiley   +1 more source

Exometabolomics Reveals Metabolic Modulation Induced by Chia Oil Supplementation in Adipose Tissue Explants From Obese Mice

open access: yesLipids, EarlyView.
The experimental design and the exometabolomic findings obtained by 1H‐NMR analysis of conditioned media from subcutaneous (SAT) and epididymal adipose tissue (EAT) explants of control and obese mice supplemented with chia oil (1.5% (w/w)). Following 8 weeks of control or high‐fat diet and 5 weeks of chia oil supplementation, SAT and EAT explants were ...
Gilson Costa dos Santos Jr   +5 more
wiley   +1 more source

Controlling the Center of Mass Motion of Levitated Particles Using Structured Wavefronts

open access: yesLaser &Photonics Reviews, EarlyView.
Optically levitated particles have great potential for quantum‐enhanced sensing. Precise control of the trapping beam is crucial to improve the stability and confinement of these systems. Here, we study how structured wavefronts can be used to control the center‐of‐mass motion of levitated particles, enhancing trap stiffness and enabling stable ...
Shah Jee Rahman   +7 more
wiley   +1 more source

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