Results 111 to 120 of about 1,110,939 (298)

The Impact of Climate Forcing Biases and the Nitrogen Cycle on Land Carbon Balance Projections

open access: yesJournal of Advances in Modeling Earth Systems
Earth System Models (ESMs) project that the terrestrial carbon sink will continue to grow as atmospheric CO2 increases, but this projection is uncertain due to biases in the simulated climate and how ESMs represent ecosystem processes. In particular, the
Christian Seiler   +3 more
doaj   +1 more source

An investigation of the solar cycle response of odd-nitrogen in the thermosphere [PDF]

open access: yes
This annual report covers the first year of funding for the study of the solar cycle variations of odd-nitrogen (N((sup 2)D), N((sup 4)S), NO) in the Earth's thermosphere.
Rusch, David W., Solomon, Stanley C.
core   +1 more source

Third-dredge-up oxygen in planetary nebulae [PDF]

open access: yes, 2000
The planetary nebulae He 2-436 and Wray 16-423 in the Sagittarius dwarf galaxy appear to result from nearly twin stars, except that third-dredge-up carbon is more abundant in He 2-436. A thorough photoionization-model analysis implies that ratios Ne/O, S/
Dudziak, G.   +3 more
core   +1 more source

Harnessing Fungal Biowelding for Constructing Mycelium‐Engineered Materials

open access: yesAdvanced Engineering Materials, EarlyView.
Mycelium‐bound composites (MBCs) offer low‐carbon alternatives for construction, yet interfacial bonding remains a critical challenge. This review examines fungal biowelding as a biocompatible adhesive, elucidating mycelium‐mediated interfacial mechanisms and their role in material assembly. Strategies to optimize biowelding are discussed, highlighting
Xue Brenda Bai   +2 more
wiley   +1 more source

Minimizing the impacts of the ammonia economy on the nitrogen cycle and climate. [PDF]

open access: yesProc Natl Acad Sci U S A, 2023
Bertagni MB   +11 more
europepmc   +1 more source

Efficiency of nitrogen fertilizers for rice [PDF]

open access: yes, 1987
The photosynthetic biomass that develops in the floodwater of wetland rice fields affects nitrogen dynamics in the ecosystem. This review summarizes available data on the nature, productivity, and composition of the photosynthetic aquatic biomass, and ...
Grant, I.F.   +3 more
core  

Interaction between Molten Al‐Killed Mn–B Steel and Carbon‐Bonded MgO Refractories Based on Recyclates

open access: yesAdvanced Engineering Materials, EarlyView.
High‐temperature interactions between low‐sulfur Al‐killed Mn–B steel and MgO–C refractories (0 and 50 wt% recyclates) are studied via finger immersion tests (1600 °C). Surface‐active elements influence infiltration. MgO/CaS layer forms, along with spinel and calcium silicate.
Matheus Roberto Bellé   +5 more
wiley   +1 more source

Voluntary Commitments as Emerging Instruments in International Environmental Law [PDF]

open access: yes, 2014
Today we confront a critical environmental challenge: how to protect the human environment for ourselves and future generations in the face of our unprecedented capacity to alter fundamental physical cycles with global and longrange implications for the ...
Brown Weiss, Edith
core   +1 more source

Zein‐Based Adhesives: Sustainable Extraction and Application in Bioadhesive Technologies

open access: yesAdvanced Engineering Materials, EarlyView.
Zein is extracted from corn gluten meal using a simple and scalable process with high yield (~90%). The resulting protein is applied in bioadhesives modified with Ca2+ and Fe3+ ions, exhibiting substrate‐dependent adhesion. The findings demonstrate competitive bonding performance and highlight the role of ionic interactions in tuning adhesion ...
Paula Bertolino Sanvezzo   +3 more
wiley   +1 more source

The nitrogen cycle on Mars [PDF]

open access: yes
Nirtogen is an essential element for the evolution of life, because it is found in a variety of biologically important molecules. Therefore, N is an important element to study from a exobiological perspective.
Mancinelli, Rocco L.
core   +1 more source

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