Results 61 to 70 of about 597,490 (278)

Conjuntos suma pequeños en p-grupos finitos

open access: yesRevista Integración, 2010
En este artículo presentamos una fórmula explícita para la función µG(r, s) = m´ın |A · B|, donde A y B son subconjuntos de un p-grupo finito G con |A| = r, |B| = s y 1 ≤ r, s ≤ |G|. Abstract.
Wilson Fernando Mutis   +2 more
doaj  

Problems in additive number theory. I [PDF]

open access: yes, 2007
8 pages. Talk at the Workshop on Arithmetic Combinatorics at the Centre de recherches mathematiques at the Universite de Montreal on April 8, 2006.
openaire   +2 more sources

Predicting Chronicity in Children and Adolescents With Newly Diagnosed Immune Thrombocytopenia at the Timepoint of Diagnosis Using Machine Learning‐Based Approaches

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Objectives To identify predictors of chronic ITP (cITP) and to develop a model based on several machine learning (ML) methods to estimate the individual risk of chronicity at the timepoint of diagnosis. Methods We analyzed a longitudinal cohort of 944 children enrolled in the Intercontinental Cooperative immune thrombocytopenia (ITP) Study ...
Severin Kasser   +6 more
wiley   +1 more source

Ramsey problems in additive number theory [PDF]

open access: yesActa Arithmetica, 1993
Let \(f_k(n)\) be the minimal integer \(m\) such that, for any decomposition of the set \(\{1,\dots,m\}\) into \(k\) (disjoint) classes, \(n\) is the sum of distinct terms of one of them. Similarly, let \(g_k(n)\) be the smallest integer \(m\) such that there is a set \(A \subseteq \{1,2,\dots,n-1\}\) with \(m=\sum_{a \in A}a\) such that, for any ...
Bollobás, Béla   +2 more
openaire   +1 more source

Patient‐Level Barriers and Facilitators to Inpatient Physical Therapy in Adolescents and Young Adults With a Hematological Malignancy: A Qualitative Study

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Despite their increased risk for functional impairment resulting from cancer and its treatments, few adolescents and young adults (AYAs) with a hematological malignancy receive the recommended or therapeutic dose of exercise per week during inpatient hospitalizations.
Jennifer A. Kelleher   +8 more
wiley   +1 more source

On Algebras of Distributions of Binary Formulas for Theories of Unars

open access: yesИзвестия Иркутского государственного университета: Серия "Математика", 2016
Algebras of distributions of binary isolating and semi-isolating formulas are derived structures for a given theory. These algebras reflect binary links between realizations of 1-types defined by formulas of the initial theory.
D. Emelyanov
doaj  

A Comparative Study of Cerebral Oxygenation During Exercise in Hemodialysis and Peritoneal Dialysis Patients

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Cognitive impairment and exercise intolerance are common in dialysis patients. Cerebral perfusion and oxygenation play a major role in both cognitive function and exercise execution; HD session per se aggravates cerebral ischemia in this population. This study aimed to compare cerebral oxygenation and perfusion at rest and in mild
Marieta P. Theodorakopoulou   +10 more
wiley   +1 more source

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

open access: yesFEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

PERFORMANCE EVALUATION FOR HETEROGENEITIES DETECTION IN THE IMAGES USING BIMAGNITUDE MAXIMUN

open access: yesРадіоелектронні і комп'ютерні системи, 2020
The subject of the article is to analyze the effectiveness of a new method for detecting heterogeneities in a digital image by estimating the bimagnitude maximum of the pixel intensities.
Виктория Владимировна Науменко   +3 more
doaj   +1 more source

Mapping the evolution of mitochondrial complex I through structural variation

open access: yesFEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin   +2 more
wiley   +1 more source

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