Results 71 to 80 of about 438,222 (313)
Enhancement Experiment on Cementitious Activity of Copper-Mine Tailings in a Geopolymer System
Fibers, 2017 Copper-mine tailings are the residual products after the extraction of precious copper metal from copper ores, and their storage can create numerous environmental problems.
Lin Yu +4 more
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Rethinking the Nitrogenase Mechanism: Activating the Active Site [PDF]
Joule, 2019 Metalloenzymes called nitrogenases (N2ases) harness the reactivity of transition metals to reduce N2 to NH3. Specifically, N2ases feature a multimetallic active site, called a cofactor, which binds and reduces N2. The seven Fe centers and one additional metal center (Mo, V, or Fe) that make up the cofactor are all potential substrate binding sites ...
Buscagan, Trixia M., Rees, Douglas C.
openaire +3 more sources
Activation Mechanisms of the VPS34 Complexes [PDF]
Cells, 2021 Phosphatidylinositol-3-phosphate (PtdIns(3)P) is essential for cell survival, and its intracellular synthesis is spatially and temporally regulated. It has major roles in two distinctive cellular pathways, namely, the autophagy and endocytic pathways. PtdIns(3)P is synthesized from phosphatidylinositol (PtdIns) by PIK3C3C/VPS34 in mammals or Vps34 in ...
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Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation
FEBS 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
Study of alkaline hydrothermal activation of belite cements by thermal analysis
, 2010 The effect of alkaline hydrothermal activation of class-C fly ash belite cement was studied using thermal analysis (TG/DTG) by determining the increase in the combined water during a period of hydration of 180 days.
Guerrero Bustos, Ana María +2 more
core +1 more source
The influence of mechanical activation on the process of reaction sintering of Portland cement clinker [PDF]
Science of Sintering, 2002 In this paper, results of an investigation of the influence of mechanical activation of a raw material mixture on processes of synthesis and reaction sintering of Portland cement clinker are given.
Živanović Branka D. +2 more
doaj +1 more source
Pleiotrophin: Activity and mechanism
, 2020 Pleiotrophin (PTN) is a potent mitogenic cytokine with a high affinity for the polysaccharide glycosaminoglycan (GAG). Although it is most strongly associated with neural development during embryogenesis and the neonatal period, its expression has also been linked to a plethora of other physiological events including cancer metastasis, angiogenesis ...
openaire +3 more sources
FEBS Letters, EarlyView.We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee +3 more
wiley +1 more source
Activation of Rac-1 and RhoA contributes to podocyte injury in chronic kidney disease
, 2013 Rho-family GTPases like RhoA and Rac-1 are potent regulators of cellular signaling that control gene expression, migration and inflammation. Activation of Rho-GTPases has been linked to podocyte dysfunction, a feature of chronic kidney diseases (CKD). We
Liliana Schäfer +42 more
core +1 more source
Extraction of organic compounds from brown coal [PDF]
Acta Montanistica Slovaca, 2005 The paper presents the study on the extraction of organic compounds (low-molecular weight - diterpenes, high-molecular weight - fullerenes and humic acids) from Handlová brown coal and pyrolytic soot.
Slavomír Hredzák +5 more
doaj