Results 41 to 50 of about 1,598,383 (361)

Extensive microscale N isotopic heterogeneity in chondritic organic matter [PDF]

open access: yes, 2005
Introduction: H and N isotopic anomalies (mainly excesses of D and 15N) in organic matter from primitive meteorites and IDPs suggest preservation of presolar molecular cloud material [1-3].
Alexander, C. M. O'D.   +4 more
core  

Possible role of organic matter in radiocaesium adsorption in soils [PDF]

open access: yes, 2002
The aim of this review is to examine the hypothesis that organic matter decreases the adsorption of radiocaesium on clay minerals. The factors that determine radiocaesium mobility and bioavailability in soil are briefly outlined to show why a ...
Dumat, Camille   +2 more
core   +3 more sources

Constructing a Triangle Ensemble of Pt Clusters for Enhanced Direct-Pathway Electrocatalysis of Formic Acid Oxidation

open access: yesChemistry, 2023
The pursuit of operational advancements in direct formic acid fuel cells (DFAFCs) necessitates the development of high-performance platinum (Pt)-based catalysts for formic acid electrooxidation (FAOR).
Cheng Li   +7 more
doaj   +1 more source

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

open access: yesFEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe   +3 more
wiley   +1 more source

Dutch (organic) agriculture, carbon sequestration and energy production [PDF]

open access: yes, 2008
Carbon sequestration in soils is often mentioned in the discussions about climate changes. In this paper the opportunities for carbon sequestration in Dutch agriculture are discussed at farm and national level.
Staps, Ing. J.J.M.   +2 more
core  

The Potential Use of Organically Grown Dye Plants in the Organic Textile Industry: Experiences and Results on Cultivation and Yields of Dyers Chamomile (Anthemis tinctoria L.), Dyers Knotweed (Polygonum tinctorium Ait.) and Weld (Reseda luteola L.) [PDF]

open access: yes, 2003
The organic cultivation of dye plants for the certified natural textiles industry is an emerging and promising sector of organic farming. In 1999 a field trial was done with different provenances of Dyer’s Chamomile (Anthemis tinctoria L.), Dyer’s ...
Hartl, A., Vogl, C.R.
core   +1 more source

Mycorrhizal fungi arbuscular in forage grasses cultivated in Cerrado soil

open access: yesScientific Reports, 2022
The Cerrado is one of the most important regions for agricultural development in the world and is the main productive breadbasket of the Americas. One of the main agricultural activities in the region is high-tech livestock.
Leidiane dos Santos Lucas   +9 more
doaj   +1 more source

WHEN ORGANIZATIONS MATTER [PDF]

open access: yesDu Bois Review: Social Science Research on Race, 2014
AbstractIncreasingly, scholars have argued that immigration politics are inseparable from racial politics, which implies that organizations and individuals who mobilize around racial group interests influence racialandimmigration attitudes and behaviors. How does the racial-political context influence anti-immigration lawmaking?
Kim Ebert   +2 more
openaire   +1 more source

The role of histone modifications in transcription regulation upon DNA damage

open access: yesFEBS Letters, EarlyView.
This review discusses the critical role of histone modifications in regulating gene expression during the DNA damage response (DDR). By modulating chromatin structure and recruiting repair factors, these post‐translational modifications fine‐tune transcriptional programmes to maintain genomic stability.
Angelina Job Kolady, Siyao Wang
wiley   +1 more source

Study of the effect of pH, salinity and DOC on fluorescence of synthetic mixtures of freshwater and marine salts [PDF]

open access: yes, 1999
In order to provide support for the discussion of the fate of organic matter in estuaries, a laboratory simulation was performed by changing freshwater ionic strength, pH and organic matter content. The change in spectroscopic characteristics caused by
Duarte, Armando C.   +2 more
core   +2 more sources

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