Results 81 to 90 of about 9,710 (177)

On Perfect Matchings and tilings in uniform Hypergraphs

, 2018
In this paper we study some variants of Dirac-type problems in hypergraphs. First, we show that for $k\ge 3$, if $H$ is a $k$-graph on $n\in k\mathbb N$ vertices with independence number at most $n/p$ and minimum codegree at least $(1/p+o(1))n$, where $p$
Han, Jie
core   +1 more source

Seasonal Influence on Subsurface Rates of Microbial Sulfate Reduction and Sulfur Isotope Fractionation in Coastal Sediments

Global Biogeochemical Cycles, Volume 39, Issue 6, June 2025.
Abstract Sulfur isotope fractionation during microbial sulfate reduction is often preserved in the mineral pyrite (FeS2), which has been used to reconstruct the biogeochemical sulfur cycle and redox geochemistry of the oceans over the Earth history.
Bizhou Zhu, Harold J. Bradbury, Thomas I. Marquand, Angus Fotherby, Caroline M. Daunt, Josephine A. Clegg, Beth Williams, Jonathan D. Todd, Michael J. Bickle, Fiona Llewellyn‐Beard, Alexandra V. Turchyn   +10 more
wiley   +1 more source

Polylogarithms, Multiple Zeta Values and Superstring Amplitudes

, 2013
A formalism is provided to calculate tree amplitudes in open superstring theory for any multiplicity at any order in the inverse string tension. We point out that the underlying world-sheet disk integrals share substantial properties with color-ordered ...
Broedel, Johannes, Schlotterer, Oliver, Stieberger, Stephan   +2 more
core   +1 more source

L'épaisseur des graphes complets K34 et K40

Journal of Combinatorial Theory, 1970
SommaireUn graphe est défini comme l'union de plusieurs autres si 1°) l'ensemble de ses sommets est l'union des ensembles des sommets des graphes composants, 2°) l'ensemble de ses arêtes est l'union des ensembles des arêtes des graphes composants. On définit alors l'épaisseur d'un graphe G comme le nombre minimum des graphes planaires dont l'union est ...
openaire   +2 more sources

Rainfall seasonality shapes belowground root trait dynamics in an Amazonian tropical rainforest: A test of the stress‐dominance hypothesis

Functional Ecology, Volume 39, Issue 3, Page 799-812, March 2025.
Read the free Plain Language Summary for this article on the Journal blog. Abstract The stress‐dominance hypothesis (SDH) predicts that trait variation at the community level increases with the availability of limiting resources, driving spatial and temporal patterns in above‐ground plant functional trait expression.
Oscar J. Valverde‐Barrantes, Laynara F. Lugli, Lucia Fuchslueger, Florian Hofhansl, Nathielly Martins, Amanda L. Cordeiro, Karst Schapp, Kelly M. Anderson, Sabrina Garcia, Adriana Grandis, Carol A. Miron, Katrin Fleisher, Marcel R. Hoosbeek, Ian P. Hartley, Erick Oblitas Mendoza, David Lapola, Carlos A. Quesada   +16 more
wiley   +1 more source

Color-Kinematics Duality for Pure Yang-Mills and Gravity at One and Two Loops

, 2015
We provide evidence in favor of the conjectured duality between color and kinematics for the case of nonsupersymmetric pure Yang-Mills amplitudes by constructing a form of the one-loop four-point amplitude of this theory that makes the duality manifest ...
Bern, Zvi, Davies, Scott, Dennen, Tristan, Huang, Yu-tin, Nohle, Josh   +4 more
core   +1 more source

Ubiquitin‐specific protease 25 improves myocardial ischemia–reperfusion injury by deubiquitinating NLRP3 and negatively regulating NLRP3 inflammasome activity in cardiomyocytes

Clinical and Translational Medicine, Volume 15, Issue 2, February 2025.
Abstract Background Myocardial ischemia/reperfusion injury (MI/RI) restricts the effect of myocardial reperfusion therapy and lacks effective prevention and treatment methods. Deubiquitinating enzymes (DUBs), especially members of the ubiquitin‐specific protease (USP) family of DUBs, are key proteins in the ubiquitination modification process and play
Bozhi Ye, Diyun Xu, Lingfeng Zhong, Yi Wang, Wei Wang, Haowen Xu, Xue Han, Julian Min, Gaojun Wu, Wenhai Huang, Guang Liang   +10 more
wiley   +1 more source

Filter Design Using Ultra‐Miniaturised Substrate‐Integrated Coaxial Cavity

IET Microwaves, Antennas &Propagation, Volume 19, Issue 1, January/December 2025.
The proposed substrate‐integrated coaxial cavity (SICC) comprises two dielectric substrates with three metal layers. The top and bottom metal layers form the cavity's broadside walls, and the middle is a circular patch that shorts to the bottom wall and to an embedded split CPW ring, respectively, through a blind‐via ring and three blind vias.
Min‐Hua Ho, Chun‐Ming Hung, Chung‐I G. Hsu   +2 more
wiley   +1 more source

Estratigrafia dos depósitos iniciais do rifte no Campo de Furado,região de São Miguel dos Campos, Bacia de Sergipe-Alagoas

Brazilian Journal of Geology
Resumo: Baseado em perfis eletrorradioativos, testemunhos, amostras de calha e sísmica 3D este trabalho apresenta o arcabouço estratigráfico de média resolução das formações Feliz Deserto, Barra de Itiúba e Penedo dirigido ao zoneamento de reservatórios no
Cláudio Borba, Paulo Sérgio Gomes Paim, Antonio Jorge Vasconcellos Garcia   +2 more
doaj   +1 more source

Pyrosequencing-based analysis reveals a novel capsular gene cluster in a KPC-producing Klebsiella pneumoniae clinical isolate identified in Brazil

BMC Microbiology, 2012
Background An important virulence factor of Klebsiella pneumoniae is the production of capsular polysaccharide (CPS), a thick mucus layer that allows for evasion of the host's defense and creates a barrier against antibacterial peptides.
Ramos Pablo Ivan, Picão Renata, Vespero Eliana, Pelisson Marsileni, Zuleta Luiz Fernando, Almeida Luiz Gonzaga P, Gerber Alexandra L, Vasconcelos Ana Tereza R, Gales Ana, Nicolás Marisa   +9 more
doaj   +1 more source