Results 11 to 20 of about 7,862 (109)

Symmetric Metal Organic Framework-Plasmonic Architectures for Reversible and High-Sensitivity Optical Sensing. [PDF]

Small
This work presents a plasmonic sensing platform combining surface lattice resonances (SLRs) in 2D metal nanoparticle gratings with ZIF‐8 MOF films. The plasmonic grating is easily and scalably produced from template‐assisted assembly of metal colloids, which is fully compatible with MOF growth. The resulting MOF‐plasmonic structure allows for a dynamic
Qi X, Pérez LA, Meng L, Imaz I, Alonso MI, Maspoch D, Mihi A.   +6 more
europepmc   +2 more sources

Quantum Transport in Nitrogen-Doped Nanoporous Graphenes. [PDF]

Small
Nanoporous graphenes are 2D arrays of graphene nanoribbons. Here, the quantum transport properties of nitrogen (N) doped nanoporous graphenes, combining N‐doped GNRs and non‐doped GNRs, are studied for the first time via Green's functions simulations.
Calogero G, Alcón I, Morales AEA, Papior N, Febrer P, Cummings AW, Pruneda M, Roche S, Brandbyge M.   +8 more
europepmc   +2 more sources

World-wide impacts of climate change and nitrogen deposition on vegetation structure, composition, and functioning of shrublands. [PDF]

New Phytol
Summary Environmental changes and their effects are among the most pressing topics of today's ecological research. Shrublands, although widespread across the globe, remain understudied in this respect. We conducted a global meta‐analysis of 81 shrubland sites subjected to experimental warming, shifts in precipitation (e.g.
Liu D, Zhang C, Ogaya R, Acil N, Pugh TAM, Domene X, Zhang X, Fang Y, Yang X, Essl F, Dullinger S, Peñuelas J.   +11 more
europepmc   +2 more sources

Stable multivariate $W$-Eulerian polynomials [PDF]

, 2013
We prove a multivariate strengthening of Brenti's result that every root of the Eulerian polynomial of type $B$ is real. Our proof combines a refinement of the descent statistic for signed permutations with the notion of real stability-a generalization ...
Assaf, Biagioli, Björner, Brenti, Brändén, Brändén, Brändén, Bóna, Chow, Chow, Dilks, Foata, Françon, Frobenius, Fulman, Fulman, Haglund, Mirkó Visontai, Nathan Williams, Petersen, Reiner, Savage, Savage, Stanley, Stanley, Steingrímsson, Stembridge, Viennot, Wagner, Wagner   +29 more
core   +1 more source

A q-rious positivity

, 2010
The $q$-binomial coefficients $\qbinom{n}{m}=\prod_{i=1}^m(1-q^{n-m+i})/(1-q^i)$, for integers $0\le m\le n$, are known to be polynomials with non-negative integer coefficients.
Warnaar, S. Ole, Zudilin, Wadim
core   +1 more source

Parallelogram polyominoes, the sandpile model on a complete bipartite graph, and a q,t-Narayana polynomial

, 2013
We classify recurrent configurations of the sandpile model on the complete bipartite graph K_{m,n} in which one designated vertex is a sink. We present a bijection from these recurrent configurations to decorated parallelogram polyominoes whose bounding ...
Bernardi, Bousquet-Mélou, Bousquet-Mélou, Chebikin, Claesson, Cori, Cori, Cori, Dhar, Dukes, Dukes, Egge, Garsia, Garsia, Garsia, Gioan, Haglund, Haglund, Knuth, Leroux, Mark Dukes, Narayana, Sloane, Yvan Le Borgne   +23 more
core   +3 more sources

Is Technological Heterogeneity the Key to Sustainable Coffee Production Efficiency?: A Latent Class Frontier Analysis in the Traditional Coffee Region of Colombia

Journal of Agricultural Economics, EarlyView.
ABSTRACT Coffee producers deal with uncertainty due to high volatility in coffee prices. To navigate these challenges, producers must balance the tradeoff between higher yield and better quality utilising heterogeneous technologies, such as intensive production methods and environmental management practices.
Orlando Rodríguez, Maria Vrachioli, Johannes Sauer   +2 more
wiley   +1 more source

Combinatorics of r-Dyck paths, r-Parking functions, and the r-Tamari lattices [PDF]

, 2012
This paper's aim is to present recent combinatorial considerations on r-Dyck paths, r-Parking functions, and the r-Tamari lattices. Giving a better understanding of the combinatorics of these objects has become important in view of their (conjectural ...
Bergeron, Francois
core  

Modeling Dissolved Organic Carbon Dynamics in an Alpine Catchment Incorporating the Mountain‐Front Recharge

Water Resources Research, Volume 62, Issue 3, March 2026.
Abstract The mountain front recharge (MFR) process significantly influences the movement of water and dissolved organic carbon (DOC) in alpine catchments. However, no existing watershed models can adequately simulate this process, hindering accurate quantification of streamflow and DOC dynamics.
J. J. Liu, J. Z. Liu, J. Ma, J. S. Xu, B. Zhang, Z. Duan, Y. Q. Liu   +6 more
wiley   +1 more source

Partition Statistics Equidistributed with the Number of Hook Difference One Cells [PDF]

, 2014
Let $\lambda$ be a partition, viewed as a Young diagram. We define the hook difference of a cell of $\lambda$ to be the difference of its leg and arm lengths. Define $h_{1,1}(\lambda)$ to be the number of cells of $\lambda$ with hook difference one.
Huang, Jiaoyang, Senger, Andrew, Wear, Peter, Wu, Tianqi   +3 more
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