Results 101 to 110 of about 126,389 (308)

能单独检测芯体电流的双重密封瓷外套交流无间隙金属氧化物避雷器

open access: yesDianci bileiqi, 2004
对瓷外套无间隙金属氧化物避雷器(以下简称MOA)密封不良的原因进行了分析。实践证明,采用双重密封结构,取消传统MOA中的隔弧筒和引拔棒,提高了MOA的密封可靠性。同时将MOA芯体与瓷套法兰绝缘,可使MOA在线监测仪在任何气候下都能监测单节及多节元件组成的MOA的芯体电流。
闫中华
doaj  

MarBEF publishing revisited [PDF]

open access: yes, 2006
Networking and integration served within a partnership approach and covered with a delicious sauce of free and open access to data and information is MarBEF’s main dish, and it is this recipe that has helped MarBEF to successfully bring marine ...
Appeltans, Ward   +2 more
core   +1 more source

Probing the atmosphere of a solar-like star by galactic microlensing at high magnification

open access: yes, 2003
We report a measurement of limb darkening of a solar-like star in the very high magnification microlensing event MOA 2002-BLG-33. A 15 hour deviation from the light curve profile expected for a single lens was monitored intensively in V and I passbands ...
A. Claret   +54 more
core   +1 more source

Students’ Experiences of Teachers’ Ways of Unpacking Visual Representations in the Context of Intermolecular Forces

open access: yesScience Education, EarlyView.
ABSTRACT This is the third article in a series, emanating from a project that used social semiotics and phenomenography to explore the role visual representations play in the teaching and learning of chemistry. Building on our earlier work that identified five qualitatively different ways that teachers may use to unpack visual representations in their ...
Emelie Patron   +3 more
wiley   +1 more source

Procedimiento metodológico de vigilancia tecnológica integrado con la inteligencia artificial para el Puerto Moa

open access: yesCiencia & Futuro
La presente investigación tiene como objetivo proponer un procedimiento metodológico para el establecimiento de un sistema vigilancia tecnológica en las operaciones portuarias con la integración de la inteligencia artificial, que le permita a la Empresa ...
Yordanis Torres-Batista   +3 more
doaj  

The Migrant-Local Difference in the Relationship Between Social Support, Sleep Disturbance, and Loneliness Among Older Adults in China: Cross-Sectional Study

open access: yesJMIR Public Health and Surveillance
BackgroundDriven by the accelerated aging of the population of China, the number of older adults has increased rapidly in the country. Meanwhile, following children, migrant older adults (MOA) have emerged as a vulnerable group in
Mingli Pang   +7 more
doaj   +1 more source

Toxicity of Four Common Environmental Chemicals Across Caenorhabditis elegans Life Stages Supporting the One Health Concept

open access: yesEnvironmental Toxicology, EarlyView.
ABSTRACT Pesticides and pharmaceuticals are among the most common chemical groups in waterbodies and soils, and their universal distribution raises concerns about potential adverse effects on nontarget organisms and humans. Reproductive output disruption is of particular concern, as it transposes effects from the individual to the next generations at ...
Fábio Campos   +3 more
wiley   +1 more source

Tensiones en un brazo de barrido de un horno de reducción por elementos finitos

open access: yesCiencia & Futuro
Se determinaron las tensiones que se originan en un brazo de barrido de acero refractario HK 40 empleado en un horno de reducción a través del Método de los Elementos Finitos.
Daniela García-Torres   +2 more
doaj  

Landscape factors influencing predation on capercaillie nests by two competing mesopredators: pine marten and red fox

open access: yesWildlife Biology, EarlyView.
Predation by pine martens Martes martes and red foxes Vulpes vulpes is an important factor influencing the population dynamics of capercaillie Tetrao urogallus. However, there is a knowledge gap regarding the relative effects of these mesopredators on the reproductive success of capercaillie. To better understand how various landscape factors influence
Siow Yan Jennifer Angoh   +4 more
wiley   +1 more source

Estudio hidrogeológico del yacimiento Punta Gorda para la rehabilitación minera con agrominerales

open access: yesCiencia & Futuro
El presente estudio analiza las condiciones hidrogeológicas del yacimiento Punta Gorda (Moa, Cuba) como base para su rehabilitación minera mediante el uso de agrominerales.
Elisbet Gamboa-Matos   +2 more
doaj  

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