Results 141 to 150 of about 1,796,931 (376)

On the Sectional Curvature of Holomorphic Curvature Operators [PDF]

Proceedings of the American Mathematical Society, 1981
Stanley M. Zoltek, Ignacio Guerrero
openaire   +1 more source

NanoCMSer: a consensus molecular subtype stratification tool for fresh‐frozen and paraffin‐embedded colorectal cancer samples

Molecular Oncology, Volume 19, Issue 5, Page 1332-1346, May 2025.
Consensus molecular subtypes (CMS1‐4) have been identified to study colorectal cancer heterogeneity and serve as potential biomarkers. In this study, we developed and evaluated NanoCMSer, a NanoString‐based classifier using 55 genes, optimized for FF and FFPE to facilitate the clinical evaluation of CMS subtyping.
Arezo Torang, Simone van de Weerd, Veerle Lammers, Sander van Hooff, Inge van den Berg, Saskia van den Bergh, Miriam Koopman, Jan N. IJzermans, Jeanine M. L. Roodhart, Jan Koster, Jan Paul Medema   +10 more
wiley   +1 more source

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

Kuwait 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, SOLEY ERSOY, MURAT TOSUN   +2 more
doaj  

Positive Complex Sectional Curvature, Ricci Flow and the Differential Sphere Theorem [PDF]

arXiv, 2007
The paper provides a different proof of the result of Brendle-Schoen on the differential sphere theorem. It is shown directly that the invariant cone of curvature operators with positive (or non-negative) complex sectional curvature is preserved by the Ricci flow.
arxiv  

Addressing persistent challenges in digital image analysis of cancer tissue: resources developed from a hackathon

Molecular Oncology, EarlyView.
Large multidimensional digital images of cancer tissue are becoming prolific, but many challenges exist to automatically extract relevant information from them using computational tools. We describe publicly available resources that have been developed jointly by expert and non‐expert computational biologists working together during a virtual hackathon
Sandhya Prabhakaran, Clarence Yapp, Gregory J. Baker, Johanna Beyer, Young Hwan Chang, Allison L. Creason, Robert Krueger, Jeremy Muhlich, Nathan Heath Patterson, Kevin Sidak, Damir Sudar, Adam J. Taylor, Luke Ternes, Jakob Troidl, Xie Yubin, Artem Sokolov, Darren R. Tyson   +16 more
wiley   +1 more source

Generalized pseudo Ricci symmetric manifolds with semi-symmetric metric connection

Kuwait Journal of Science, 2014
In this paper, firstly an example of a manifold with almost constant curvature and nearly quasi constant curvature which is neither quasi Einstein nor nearly quasi Einstein is given.
SEZGIN ALTAY DEMIRBAG
doaj  

Contravariant Curvatures of Doubly Warped Product Poisson Manifolds

Mathematics
In this paper, we investigate the sectional contravariant curvature of a doubly warped product manifold ( fB×bF,g˜,Π=ΠB+ΠF) equipped with a product Poisson structure Π, using warping functions and sectional curvatures of its factor manifolds (B,g˜B,ΠB ...
Foued Aloui, Shyamal Kumar Hui, Ibrahim Al-Dayel   +2 more
doaj   +1 more source

A Liouville Property of Holomorphic Maps

The Scientific World Journal, 2013
We prove a Liouville property of holomorphic maps from a complete Kähler manifold with nonnegative holomorphic bisectional curvature to a complete simply connected Kähler manifold with a certain assumption on the sectional curvature.
Chengjie Yu
doaj   +1 more source

MicroRNAs in seminal plasma are able to discern infertile men at increased risk of developing testicular cancer

Molecular Oncology, Volume 19, Issue 4, Page 1188-1202, April 2025.
Male infertility is a known risk factor for the development of testicular cancer. In this paper, we analyzed the expression profile of a microRNA panel by real‐time PCR and validated the results by digital PCR. Experimental and bioinformatics analyses allowed us to identify possible biomarkers able to discern men with a higher risk of developing ...
Carmen Ferrara, Rosalia Battaglia, Angela Caponnetto, Anna Fazzio, Michele Stella, Cristina Barbagallo, Nicolò Musso, Federica Lunelio, Maria Elena Vento, Placido Borzì, Paolo Scollo, Davide Barbagallo, Marco Ragusa, Salvatore Pernagallo, Cinzia Di Pietro   +14 more
wiley   +1 more source

Negative sectional curvature and the product complex structure [PDF]

arXiv, 2006
We prove that a product complex manifold cannot admit a complete K\"ahler metric with sectional curvature $K d$, where $c$ and $d$ are constants. In particular, a product domain in $\C$ cannot cover a compact K\"ahler manifold with negative sectional curvature. On the other hand, we observe that there are complete K\"
arxiv