Results 41 to 50 of about 1,159 (264)

Tumour–host interactions in Drosophila: mechanisms in the tumour micro‐ and macroenvironment

Molecular Oncology, EarlyView.
This review examines how tumour–host crosstalk takes place at multiple levels of biological organisation, from local cell competition and immune crosstalk to organism‐wide metabolic and physiological collapse. Here, we integrate findings from Drosophila melanogaster studies that reveal conserved mechanisms through which tumours hijack host systems to ...
José Teles‐Reis, Tor Erik Rusten
wiley   +1 more source

The α_σ-Approximation Property and Its Related Operator Ideals

Mathematics
In this paper, we study the σ-tensor norm (ασ), the absolutely τ-summing operator and the σ-nuclear operator. We characterize the ασ-approximation property in terms of some density of the space of absolutely τ-summing operators.
Ju Myung Kim
doaj   +1 more source

On a new generalized closure operator in the frame of ideals [PDF]

Journal of Mahani Mathematical Research
This paper aims to propose and examine two new operators based on the fundamental structure “ideal” and the notion of “generalized” producing a new generalized ideal topological space.
Salah El-Din Abbas, Hossam Mahmoud Khiamy, El-Sayed El-Sanowsy, Ismail Ibedou   +3 more
doaj   +1 more source

REAL AND COMPLEX OPERATOR IDEALS [PDF]

Quaestiones Mathematicae, 1995
The powerful concept of an operator ideal on the class of all Banach spaces makes sense in the real and in the complex case. In both settings we may, for example, consider compact, nuclear, or $2$--summing operators, where the definitions are adapted to each other in a natural way. This paper deals with the question whether or not that fact is based on
openaire   +2 more sources

Rethinking plastic waste: innovations in enzymatic breakdown of oil‐based polyesters and bioplastics

FEBS Open Bio, EarlyView.
Plastic pollution remains a critical environmental challenge, and current mechanical and chemical recycling methods are insufficient to achieve a fully circular economy. This review highlights recent breakthroughs in the enzymatic depolymerization of both oil‐derived polyesters and bioplastics, including high‐throughput protein engineering, de novo ...
Elena Rosini, Nicolò Antonelli, Gianluca Molla   +2 more
wiley   +1 more source

On sortable intervals of monomials

Analele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2016
In 1996, in his study of Gröbner bases of toric ideals, Sturmfels introduced a sorting operator on pairs of monomials of degree d in n variables. This gave rise to the notion of sortable sets, namely sets B of monomials of degree d such that B×B is ...
Bonanzinga Vittoria, Eliahou Shalom
doaj   +1 more source

Extension of stabilizers on subtraction algebras [PDF]

Journal of Mahani Mathematical Research
This paper explores the intersection between the class of bounded subtraction algebras and the class of Boolean algebras, demonstrating their equivalence.
Saeide Zahiri, Farshad Nahangi
doaj   +1 more source

Lie Ideals in Operator Algebras

, 2002
Let $\mathcal A$ be a Banach algebra for which the group of invertible elements is connected. A subspace $\mathcal L \subseteq \mathcal A$ is a Lie ideal in $\mathcal A$ if, and only if, it is invariant under inner automorphisms. This applies, in particular, to any canonical subalgebra of an AF \ensuremath{\text{C}^{*}}-algebra.
Hopenwasser, Alan, Paulsen, Vern
openaire   +3 more sources

Derivations, Homomorphisms, and Operator Ideals [PDF]

Proceedings of the American Mathematical Society, 1977
Let A \mathfrak {A} be a C ∗ {C^\ast } -algebra of operators on a Hilbert space, and let C p {C_p} be the Schatten p-ideal. It is shown that every derivation from A \mathfrak {A} to
openaire   +2 more sources

ATP13A2 is involved in intracellular polyamine transport in lung epithelial cells

FEBS Open Bio, EarlyView.
Spermidine transport in lung epithelial cells involves the polyamine transporter ATP13A2. Cell proliferation is associated with the upregulation of ATP13A2. Polyamines are present in all living cells and are implicated in various crucial cellular processes such as proliferation, apoptosis and autophagy.
Yuta Hatori, Kohei Kawabata, Takanori Kubo, Takeo Kitazawa, Sae Kanai, Madoka Iwashita, Ami Hayashi, Hiroyuki Nishi, Mikihisa Takano   +8 more
wiley   +1 more source