Results 111 to 120 of about 1,746,741 (337)

Cytomegalovirus infection is common in prostate cancer and antiviral therapies inhibit progression in disease models

open access: yesMolecular Oncology, EarlyView.
Human cytomegalovirus infection is common in normal prostate epithelium, prostate tumor tissue, and prostate cancer cell lines. CMV promotes cell survival, proliferation, and androgen receptor signaling. Anti‐CMV pharmaceutical compounds in clinical use inhibited cell expansion in prostate cancer models in vitro and in vivo, motivating investigation ...
Johanna Classon   +13 more
wiley   +1 more source

Beltrami-Meusnier formulas of generalized semi ruled surfaces in semi Euclidean space

open access: yesKuwait Journal of Science, 2014
In this paper, we study the sectional curvatures of the generalized semi ruled surfaces in semi Euclidean space   The first fundamental form and the metric coefficients of the generalized semi ruled surfaces are calculated and in these regards ...
MAHMUT AKYIG١IT   +2 more
doaj  

Curvature of a class of indefinite globally framed $f$-manifolds

open access: yes, 2008
We present a compared analysis of some properties of indefinite almost $\mathcal{S}$-manifolds and indefinite $\mathcal{S}$-manifolds. We give some characterizations in terms of the Levi-Civita connection and of the characteristic vector fields. We study
Brunetti, Letizia, Pastore, Anna Maria
core   +2 more sources

Moments of Sectional Curvature

open access: yes, 2017
The sectional curvature of a compact Riemannian manifold M can be seen as a random variable on the Grassmann bundle of 2-planes in TM endowed with the Fubini-Study volume density. In this article we calculate the moments of this random variable by integrating suitable local Riemannian invariants and discuss the distribution of the sectional curvature ...
openaire   +2 more sources

Machine learning for identifying liver and pancreas cancers through comprehensive serum glycopeptide spectra analysis: a case‐control study

open access: yesMolecular Oncology, EarlyView.
This study presents a novel AI‐based diagnostic approach—comprehensive serum glycopeptide spectra analysis (CSGSA)—that integrates tumor markers and enriched glycopeptides from serum. Using a neural network model, this method accurately distinguishes liver and pancreatic cancers from healthy individuals.
Motoyuki Kohjima   +6 more
wiley   +1 more source

On the Sectional Curvature of Holomorphic Curvature Operators [PDF]

open access: yesProceedings of the American Mathematical Society, 1981
Stanley M. Zoltek, Ignacio Guerrero
openaire   +2 more sources

On sectional curvature of indefinite metrics. II

open access: yesMathematische Annalen, 1980
Throughout this note let M be a differentiable manifold with an indefinite metric ( , ) of signature ( , .... + , . . . ) . For tangent vectors X, Y,... at any point, we shall use the following terminology. If ( X , X ) = ( Y , Y ) = I [resp. ( X , X ) = ( Y , Y)= 1 ] and (X, Y)=0, we say that the pair {X, Y} is orthonormal of signature (+ , +) [resp. (
Nomizu, Katsumi, Dajczer, Marcos
openaire   +3 more sources

Olaparib synergy screen reveals Exemestane induces replication stress in triple‐negative breast cancer

open access: yesMolecular Oncology, EarlyView.
Screening 166 FDA‐approved anticancer drugs identifies the aromatase inhibitor Exemestane as a synergistic partner of PARP inhibitor Olaparib in BRCA‐proficient triple‐negative breast cancer. Exemestane induces ROS‐mediated replication stress, enhancing DNA damage and apoptosis alongside Olaparib.
Nur Aininie Yusoh   +5 more
wiley   +1 more source

A basic inequality for submanifolds in a cosymplectic space form

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2003
For submanifolds tangent to the structure vector field in cosymplectic space forms, we establish a basic inequality between the main intrinsic invariants of the submanifold, namely, its sectional curvature and scalar curvature on one side; and its main ...
Jeong-Sik Kim, Jaedong Choi
doaj   +1 more source

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