Results 81 to 90 of about 177,712 (231)

Triterpene alcohols and sterols of Siberian larch (Larix sibirica Ldb.) needles

open access: yesIOP Conference Series: Earth and Environment, 2019
The composition of triterpene alcohols and sterols in the fraction of Siberian larch (Larix sibirica Ldb.) conifer needles is considered in paper. The needles areextracted with propan-2-ol; resinous substances are extracted with petroleum ether (40–70°C);
D. S. Mikson, V. I. Roshchin
semanticscholar   +1 more source

Maternal Myo‐Inositol Intake and Congenital Heart Defects in Offspring: A Population‐Based Case–Control Study

open access: yesBJOG: An International Journal of Obstetrics &Gynaecology, Volume 133, Issue 3, Page 442-453, February 2026.
ABSTRACT Objective To investigate associations between maternal periconceptional (three months prior through the third pregnancy month) myo‐inositol intake and the odds of selected congenital heart defects in offspring. Design A population‐based case–control study using the National Birth Defects Prevention Study (NBDPS) database. Setting United States.
Ruiqi Cen   +16 more
wiley   +1 more source

Formal proof for delayed finite field arithmetic using floating point operators [PDF]

open access: yes, 2008
Formal proof checkers such as Coq are capable of validating proofs of correction of algorithms for finite field arithmetics but they require extensive training from potential users.
Boldo, Sylvie   +2 more
core   +3 more sources

Simulated soundscapes and transfer learning boost the performance of acoustic classifiers under data scarcity

open access: yesMethods in Ecology and Evolution, Volume 17, Issue 2, Page 322-338, February 2026.
Abstract The biodiversity crisis necessitates spatially extensive methods to monitor multiple taxonomic groups for evidence of change in response to evolving environmental conditions. Programs that combine passive acoustic monitoring and machine learning are increasingly used to meet this need. These methods require large, annotated datasets, which are
Matthew J. Weldy   +8 more
wiley   +1 more source

EFFECTS OF MELATONIN AND PHYSICAL EXERCISE ON SECONDARY BILIARY CIRRHOSIS

open access: yesAnnals of Hepatology
Introduction and Objectives: Cirrhosis is characterized by the formation of septa and fibrotic nodules in the liver parenchyma, and it is a relevant public health problem. Bile duct ligation (BDL) is an effective experimental model for inducing secondary
Marilda da Silva Brasil   +8 more
doaj   +1 more source

PROGRAMACIÓN DE LA CONSTRUCCIÓN DEL TERCER ANILLO DE MUROS ANCLADOS DE UNA EDIFICACIÓN APLICANDO EL MÉTODO DE LÍNEAS DE BALANCE

open access: yesInvestigación & Desarrollo, 2020
En la industria de la construcción, planificar y controlar el cronograma de obra son importantes, debido a que se cometen errores al realizar la programación inicial del proyecto, ya que durante la ejecución de la obra se generan retrasos entre ...
Steven Paredes_Gutierrez   +2 more
doaj   +1 more source

Sex Differences in Associations Between Adversity and Biological Ageing

open access: yesAging Cell, Volume 25, Issue 2, February 2026.
Childhood adversity was associated with older biological ageing profiles (metabolomic ageing, frailty, telomeres, grip strength) primarily in females, supported by sex‐stratified analyses. Adulthood adversity showed stronger associations in males, particularly for frailty and grip strength, with significant sex‐by‐adversity interactions, highlighting ...
Julian Mutz   +4 more
wiley   +1 more source

On the age of the magnetically active WW Psa and TX Psa members of the beta Pictoris association [PDF]

open access: yes, 2016
There are a variety of different techniques available to estimate the ages of pre-main-sequence stars. Components of physical pairs, thanks to their strict coevality and the mass difference, such as the binary system analysed in this paper, are best ...
Buccino, A.   +8 more
core   +2 more sources

The Influence of Fire and Foliar Chemical Composition on the Diet of Southern Greater Gliders (Petauroides volans)

open access: yesAustral Ecology, Volume 51, Issue 2, February 2026.
ABSTRACT Understanding diet selection in threatened species is crucial for effective conservation planning, particularly where bushfires alter food availability and quality. In Australian eucalypt forests, Eucalyptus leaves are the primary food for several arboreal marsupials, such as the southern greater glider (Petauroides volans).
Tina A. R. Gopalan   +5 more
wiley   +1 more source

Os conceitos de avaliação de dois professores de lígua inglesa da rede pública muinicipal de Goiânia

open access: yesSignótica, 2006
O presente artigo apresenta os conceitos de avaliação contidos na Lei de Diretrizes e Bases (LDB) e nos Parâmetros Curriculares Nacionais (PCN), para então examinar como dois professores da rede pública municipal da ...
Dilys Karen Rees
doaj   +1 more source

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