Results 71 to 80 of about 11,604,669 (184)

The Umbral Transfer-Matrix Method. III. Counting Animals

open access: yes, 2001
This is the third part of the five-part saga on the umbral transfermatrix method, based on Gian-Carlo Rota’s seminal notion of the umbra. In this article we describe the Maple package ZOO that for any specific k, automatically constructs an umbral scheme
Doron Zeilberger
core  

Métodos para identificar o limiar anaeróbio em indivíduos com diabete tipo 2 e em indivíduos não-diabéticos Métodos para identificar el umbral anaeróbico en individuos con diabetes tipo 2 y en individuos no diabéticos Methods to identify the anaerobic threshold for type-2 diabetic and non-diabetic subjects

open access: yesArquivos Brasileiros de Cardiologia, 2010
FUNDAMENTO: Apesar de o limiar anaeróbio (LAn) ser utilizado na avaliação funcional de diferentes populações, estudos comparando métodos para sua identificação em diabéticos tipo-2 tem sido pouco realizados. OBJETIVO: Comparar protocolos de identificação do LAn em indivíduos diabéticos tipo 2 e em não-diabéticos, e analisar respostas relacionadas ao ...
Herbert G. Simões   +3 more
openaire   +2 more sources

Acclimatisation duration, not just release type, drives post‐release settlement in a large‐scale carnivore reintroduction programme

open access: yesJournal of Applied Ecology, Volume 63, Issue 5, May 2026.
Our study highlights that when acclimatisation periods are too short, the substantial economic and logistical investment in soft‐release protocols may fail to deliver the expected conservation gains. Therefore, defining evidence‐based acclimatisation periods that are long enough to promote settlement, yet compatible with logistical constraints, may ...
Pablo Cisneros‐Araujo   +14 more
wiley   +1 more source

Editorial-La constancia de las humanidades ante la incertidumbre [PDF]

open access: yes, 2023
En este número de la Revista Umbral invitamos a reflexionar sobre el estado actual de las Humanidades. Las humanidades relucen como importantes referencias en investigaciones y proyectos que van desde lo científico, lo tecnológico, lo político, a lo ...
Diaz, Tamara
core   +1 more source

Umbral Vade Mecum [PDF]

open access: yes, 2013
In recent years the umbral calculus has emerged from the shadows to provide an elegant correspondence framework that automatically gives systematic solutions of ubiquitous difference equations --- discretized versions of the differential cornerstones ...
Thomas L Curtright   +5 more
core   +1 more source

Eficacia de preservantes en madera de Pinus Radiata D. Don, frente al ataque de termitas subterráneas (Reticulitermes Hesperus)

open access: yesMaderas: Ciencia y Tecnología, 2014
In memoriam of Dr. H. Peter STEINHAGEN La aparición de la termita subterránea (Reticulitermes sp.) en Chile y la reiterada detección de focos de infestación en prácticamente todas las comunas de Santiago y en algunas de la V región, deja al descubierto ...
Rene Carmona C., Andrés Durán F.
doaj  

Indoor radon in Spanish workplaces. A pilot study before the introduction of the European Directive 2013/59/Euratom

open access: yesGaceta Sanitaria, 2019
Objective: To explore whether there is a possible problem regarding indoor radon concentration surpassing the new European Directive 2013/59/Euratom threshold in Spanish workplaces.
Alberto Ruano-Ravina   +6 more
doaj   +1 more source

The Umbral Transfer-Matrix Method. IV. Counting Self-Avoiding Polygons and Walks

open access: yesThe Electronic Journal of Combinatorics, 2001
This is the fourth installment of the five-part saga on the Umbral Transfer-Matrix method, based on Gian-Carlo Rota's seminal notion of the umbra. In this article we describe the Maple packages USAP, USAW, and MAYLIS. USAP automatically constructs, for any specific $r$, an Umbral Scheme for enumerating, according to perimeter, the number of self ...
openaire   +2 more sources

EFICACIA DE PRESERVANTES EN MADERA DE PINUS RADIATA D. DON, FRENTE AL ATAQUE DE TERMITAS SUBTERRÁNEAS (RETICULITERMES HESPERUS)

open access: yesMaderas: Ciencia y Tecnología, 2005
La aparición de la termita subterránea (Reticulitermes sp.) en Chile y la reiterada detección de focos de infestación en prácticamente todas las comunas de Santiago y en algunas de la V región, deja al descubierto la falta de información sobre el uso ...
Rene Carmona C, Andrés Durán F
doaj  

Starspot Temperature of CoRoT-2 from Multiwavelength Observations with SPARC4

open access: yesThe Astrophysical Journal
Measuring starspot temperatures is crucial for understanding stellar magnetic activity as it affects stellar brightness variations, influences exoplanet transit measurements, and provides constraints on the physical conditions and energy transport in ...
Adriana Valio   +7 more
doaj   +1 more source

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