Results 111 to 120 of about 1,681,562 (361)

Mechanisms of the Effects of Carbon Source Addition on Carbon Transport and Sequestration in Purple Soil Sloping Farmland under Natural Rainfall

open access: yesShuitu Baochi Xuebao
[Objective] Degradation of purple soil and water loss is serious, and it is difficult to increase and sequester carbon in the soil. The aim of the study was to explore the impact of carbon source addition on carbon sequestration of purple soil sloping ...
LIU Bing   +8 more
doaj   +1 more source

Adjustment of Coatings Morphology and Particle Distribution of Layered Silicates by Freeze‐Drying for Improved Gas Barriers

open access: yesAdvanced Engineering Materials, EarlyView.
Freeze‐drying of layered silicate is the key to get coatings with superior gas barrier. Freeze‐drying of layered silicates modified with dodecylamine (DDA) is a highly effective technique for the preparation of barrier pigments that significantly mitigate the permeation of oxygen, water vapor, and hydrogen through polymer films containing these ...
Joshua Lommes   +4 more
wiley   +1 more source

Separation of Q from carbon in CR meteorites during stepped combustion [PDF]

open access: yes, 2012
Introduction: The nature of the planetary noble gas carrier (Q) in meteorites remains uncertain. It is known that it is likely to be carbonaceous, but represents only a small fraction of the total macromolecular material.
Verchovsky, A. B.   +5 more
core  

Cobalt Tungstate Characterization Using Matryoshka‐Structure Filter

open access: yesAdvanced Engineering Materials, EarlyView.
The green synthesis of cobalt tungstate (CoWO4) using natural polymerizing agents from agar–agar and commercial produces environmentally friendly materials with tunable structural and electromagnetic properties. X‐ray diffraction and Rietveld refinement correlate crystal structure with microwave transmission losses in Matryoshka‐type filters.
Amanda Gomes Barboza   +6 more
wiley   +1 more source

Methods development for total organic carbon accountability [PDF]

open access: yes
This report describes the efforts completed during the contract period beginning November 1, 1990 and ending April 30, 1991. Samples of product hygiene and potable water from WRT 3A were supplied by NASA/MSFC prior to contract award on July 24, 1990 ...
Benson, Brian L.   +1 more
core   +1 more source

Exploring the Origins of Carbon in Terrestrial Worlds [PDF]

open access: yes, 2014
Given the central role of carbon in the chemistry of life, it is a fundamental question as to how carbon is supplied to the Earth, in what form and when.
Bergin, Edwin A.   +3 more
core   +3 more sources

Liquid Crystal Elastomers Under Confinement: A Review of Template‐Based Fabrication and Applications

open access: yesAdvanced Engineering Materials, EarlyView.
Template‐assisted confinement offers powerful ways to control the alignment, structure, and function of liquid crystal elastomers. This review highlights several templating strategies and details how geometry and interfaces shape material responses.
Meng Zhang   +7 more
wiley   +1 more source

Pattern of total organic carbon in sediments within the mangrove ecosystem

open access: yesFrontiers in Marine Science
The sedimentary total organic carbon (TOC) in mangrove ecosystems plays an essential role in the global carbon storage. Nevertheless, little information is available about the pattern of TOC in sediments varying from bare and flat to those beneath ...
Yue Li   +4 more
doaj   +1 more source

Major role of marine vegetation on the oceanic carbon cycle [PDF]

open access: yes, 2013
The carbon burial in vegetated sediments, ignored in past assessments of carbon burial in the ocean, was evaluated using a bottom-up approach derived from upscaling a compilation of published individual estimates of carbon burial in vegetated habitats ...
Caraco, Nina F.   +2 more
core  

Equilibrium responses of global net primary production and carbon storage to doubled atmospheric carbon dioxide: sensitivity to changes in vegetation nitrogen concentration [PDF]

open access: yes, 1997
We ran the terrestrial ecosystem model (TEM) for the globe at 0.5° resolution for atmospheric CO2 concentrations of 340 and 680 parts per million by volume (ppmv) to evaluate global and regional responses of net primary production (NPP) and carbon ...
A. David McGuire   +97 more
core   +2 more sources

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