Results 21 to 30 of about 349,815 (226)
Integrability of planar polynomial differential systems through linear differential equations [PDF]
, 2005 In this work, we consider rational ordinary differential equations dy/dx = Q(x,y)/P(x,y), with Q(x,y) and P(x,y) coprime polynomials with real coefficients.
Giacomini, Héctor +2 more
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The role of algebraic solutions in planar polynomial differential systems [PDF]
, 2005 We study a planar polynomial differential system, given by \dot{x}=P(x,y), \dot{y}=Q(x,y). We consider a function I(x,y)=\exp \{h_2(x) A_1(x,y) \diagup A_0(x,y) \} h_1(x) \prod_{i=1}^{\ell} (y-g_i(x))^{\alpha_i}, where g_i(x) are algebraic functions, A_1(
Giacomini, Héctor +2 more
core +5 more sources
Classical planar algebraic curves realizable by quadratic polynomial differential systems [PDF]
, 2017 In this paper we show planar quadratic polynomial differentialsystems exhibiting as solutions some famous planar invariant algebraic curves. Also we put particular attention to the Darboux integrability of these differential systems.The author is ...
García, I. A. (Isaac A.), Llibre, Jaume
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Discovery of Cofactor Competitive Inhibitors against the Human Methyltransferase Fibrillarin
Pharmaceuticals, 2021 Fibrillarin (FBL) is an essential and evolutionarily highly conserved S-adenosyl methionine (SAM) dependent methyltransferase. It is the catalytic component of a multiprotein complex that facilitates 2′-O-methylation of ribosomal RNAs (rRNAs), a ...
Yun Shi +6 more
doaj +1 more source
Texture and Cofactor Zeros of the Neutrino Mass Matrix
, 2014 We study Majorana neutrino mass matrices that have two texture zeros, or two cofactor zeros, or one texture zero and one cofactor zero. The two texture/cofactor zero conditions give four constraints, which in conjunction with the five measured ...
Liao, Jiajun, Marfatia, D., Whisnant, K.
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Optimization of Enzymatic Gas-Phase Reactions by Increasing the Long-Term Stability of the Catalyst [PDF]
, 2004 Enzymatic gas-phase reactions are usually performed in continuous reactors, and thus very stable and active catalysts are required to perform such transformations on cost-effective levels.
Büchs, Jochen, +4 more
core +2 more sources
Frontiers in Microbiology, 2018 Oxidoreductases are ubiquitous enzymes that catalyze an extensive range of chemical reactions with great specificity, efficiency, and selectivity. Most oxidoreductases are nicotinamide cofactor-dependent enzymes with a strong preference for NADP or NAD ...
Andrea M. Chánique +2 more
doaj +1 more source
Frontiers in Pharmacology, 2023 Many enzymes require post-translational modifications or cofactor machinery for primary function. As these catalytically essential moieties are highly regulated, they act as dual sensors and chemical handles for context-dependent metabolic activity ...
Katelyn A. Bustin +6 more
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Electron Transfer Precedes ATP Hydrolysis during Nitrogenase Catalysis [PDF]
, 2013 The biological reduction of N2 to NH3 catalyzed by Mo-dependent nitrogenase requires at least eight rounds of a complex cycle of events associated with ATP-driven electron transfer (ET) from the Fe protein to the catalytic MoFe protein, with each ET ...
Antony, Edwin +7 more
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Research and Practice in Thrombosis and HaemostasisBackground: Combined oral contraceptives (COCs) are associated with an increased risk of venous thromboembolism. Several changes are induced in both coagulant and anticoagulant factors, of which the impact on protein S (PS) and tissue factor pathway ...
Jesper Strandberg +3 more
doaj +1 more source