Results 21 to 30 of about 419,459 (324)

Classical planar algebraic curves realizable by quadratic polynomial differential systems [PDF]

open access: yes, 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
core   +4 more sources

One diagonal texture or cofactor zero of the neutrino mass matrix

open access: yes, 2013
In view of the recent measurement of nonzero $\theta_{13}$, we carry out a systematic study of a simple class of neutrino models that has one diagonal texture or cofactor zero in the mass matrix.
Liao, Jiajun   +2 more
core   +1 more source

Study of the cofactor conditions: conditions of supercompatibility between phases

open access: yes, 2013
The cofactor conditions, introduced in James and Zhang, are conditions of compatibility between phases in martensitic materials. They consist of three subconditions: i) the condition that the middle principal stretch of the transformation stretch tensor $
Chen, Xian   +3 more
core   +2 more sources

Optimization of Enzymatic Gas-Phase Reactions by Increasing the Long-Term Stability of the Catalyst [PDF]

open access: yes, 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

Five-coordinate MnIV intermediate in the activation of nature’s water splitting cofactor

open access: yesProceedings of the National Academy of Sciences of the United States of America, 2019
Significance Recent results have shown that nature’s water splitting catalyst inserts an additional water molecule into what appears to be a solvent inaccessible site late in its reaction cycle.
Maria Chrysina   +10 more
semanticscholar   +1 more source

Molybdenum cofactor deficiency

open access: yesAtlas of Inherited Metabolic Diseases, 2018
Molybdenum cofactor deficiency is a rare condition characterized by brain dysfunction (encephalopathy) that worsens over time. Babies with this condition appear normal at birth, but within a week they have difficulty feeding and develop seizures that do ...
C. Staufner
semanticscholar   +1 more source

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

open access: yesFEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

Mapping the evolution of mitochondrial complex I through structural variation

open access: yesFEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin   +2 more
wiley   +1 more source

On the Metal Cofactor in the Tyrosinase Family

open access: yesInternational Journal of Molecular Sciences, 2018
The production of pigment in mammalian melanocytes requires the contribution of at least three melanogenic enzymes, tyrosinase and two other accessory enzymes called the tyrosinase-related proteins (Trp1 and Trp2), which regulate the type and amount of ...
F. Solano
semanticscholar   +1 more source

The role of fibroblast growth factors in cell and cancer metabolism

open access: yesFEBS Letters, EarlyView.
Fibroblast growth factor (FGF) signaling regulates crucial signaling cascades that promote cell proliferation, survival, and metabolism. Therefore, FGFs and their receptors are often dysregulated in human diseases, including cancer, to sustain proliferation and rewire metabolism.
Jessica Price, Chiara Francavilla
wiley   +1 more source

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