Results 111 to 120 of about 231,003 (300)

Microbiome−host proteostasis crosstalk—An emerging perspective on mechanisms and interventions toward healthy longevity

FEBS Letters, EarlyView.
Proteostasis and the gut microbiota play a key role in shaping host physiology. Microbiota‐derived metabolites, vitamins, and RNA modulate host proteostasis. Findings from model systems, including C. elegans, indicate microbes can either stabilize or disrupt host proteostasis.
Abhishek Anil Dubey, Maria Ermolaeva
wiley   +1 more source

From mice to humans—divergent strategies for intestinal homeostasis and regeneration

FEBS Letters, EarlyView.
Recent advances such as organoid genome editing, xenotransplantation, imaging, and whole‐genome sequencing have enabled direct studies of human intestinal stem cells (ISCs). These studies reveal species‐specific features, including slower ISC proliferation, distinct injury responses, slower somatic mutation accumulation in humans, and an inverse ...
Keiko Ishikawa, Shinya Sugimoto, Toshiro Sato   +2 more
wiley   +1 more source

An analysis of completely-positive trace-preserving maps on M2 [PDF]

, 2001
We give a useful new characterization of the set of all completely positive, trace-preserving maps Φ:M2→M2 from which one can easily check any trace-preserving map for complete positivity.
Mary Beth Ruskai, Werner, Elisabeth, Elisabeth Werner, Beth Ruskai, Mary, Szarek, Stanislaw, Stanislaw Szarek   +5 more
core   +1 more source

A machine learning framework for predicting agricultural terrace suitability using positive and unlabelled datasets: an application for the Troodos Mountains, Cyprus

International Journal of Applied Earth Observations and Geoinformation
Terraces are a defining feature of Mediterranean mountain landscapes, enabling agriculture on steep slopes while providing multiple ecosystem services. Land suitability analysis (LSA) can guide authorities and land users to sustainably manage and expand ...
Aman Kumar Meena, Christos Zoumides, Hakan Djuma, Ioannis Sofokleous, Corrado Camera, Adriana Bruggeman   +5 more
doaj   +1 more source

Adjoints and low-rank covariance representation [PDF]

Nonlinear Processes in Geophysics, 2001
Quantitative measures of the uncertainty of Earth system estimates can be as important as the estimates themselves. Direct calculation of second moments of estimation errors, as described by the covariance matrix, is impractical when the number of ...
M. K. Tippett, S. E. Cohn
doaj  

Complete positivity of mapping valued linear maps

Mathematische Zeitschrift, 1988
We consider the matrix order structure of ordered Banach space. This notion is an extended version of the order structure of a \(C^ *\)- algebra or a predual of von Neumann algebra induced by the cone of its positive elements. Corresponding to the case that the associated algebra is abelian, we introduce the notion, a matrix ordered Banach space of ...
Itoh, Takashi, Nagisa, Masaru
openaire   +2 more sources

Modelling stem cell differentiation related processes—A practical overview for biologists

FEBS Letters, EarlyView.
Stem cell differentiation is complex and difficult to control experimentally. This review introduces suitable computational modelling approaches that can support stem cell research, from mechanistic ODE and abstract models to multiscale and deep learning methods.
Ricco Zeegelaar, Xinqi Yan, Lucas F. Jansen Klomp, Stefano Schivo, Janine N. Post   +4 more
wiley   +1 more source

Absolute continuity for operator valued completely positive maps on C *-algebras [PDF]

, 2009
Motivated by applicability to quantum operations, quantum information, and quantum probability, we investigate the notion of absolute continuity for operator valued completely positive maps on C* -algebras, previously introduced by Parthasarathy [in ...
Gheondea, A., Kavruk, A. Ş.
core   +1 more source

Design and analysis strategies for robust microbiome ageing research

FEBS Letters, EarlyView.
The gut microbiome changes with age and associates with age‐related morbidity and mortality, establishing it as a potential biomarker and intervention target for ageing. Realising this potential requires methodological rigour, yet distinguishing biological signals from methodological artefacts remains challenging across cohorts. This review provides an
Mark Olenik, İsmail Güderer, Yi Wang, Tayyaba Alvi, Prasoon Pandey, Handan Melike Dönertaş   +5 more
wiley   +1 more source

Characterizations of homomorphisms among unital completely positive maps [PDF]

We prove that a unital completely positive map between finite-dimensional C*-algebras is a homomorphism if and only if it is completely entropy-nonincreasing, where the relevant notion of entropy is a variant of von Neumann entropy.
Kornell, Andre
core   +1 more source