Results 41 to 50 of about 410,984 (326)

Rapid eruption of the Columbia River flood basalt and correlation with the mid-Miocene climate optimum

open access: yesScience Advances, 2018
U-Pb ages show Earth’s youngest flood basalt province erupted in 750 ka starting ~16.65 Ma during Miocene global warming. Flood basalts, the largest volcanic events in Earth history, are thought to drive global environmental change because they can emit ...
J. Kasbohm, B. Schoene
semanticscholar   +1 more source

Relationship Between Birth Weight and Time of First Deciduous Tooth Eruption in 143 Consecutively Born Infants

open access: yesPediatrics and Neonatology, 2010
Deciduous teeth play an important role in the proper alignment, spacing and occlusion of permanent teeth. The calcification of deciduous teeth begins during the fourth prenatal month, and calcification of all deciduous teeth begin by the end of the sixth
Negar Sajjadian   +4 more
doaj   +1 more source

Statistical analysis of daily seismic event rate as a precursor to volcanic eruptions [PDF]

open access: yes, 2003
We analyse time series of daily seismic event rate for the Kilauea, Hawaii, volcano between 1959 and 2000. Individual eruptions are not always preceded by an increase in event rate, and many increases in event rate do not lead to eruption.
Chastin, Sebastien F. M., Main, Ian G.
core   +2 more sources

Simultaneous Observation of a Flux Rope Eruption and Magnetic Reconnection during an X-class Solar Flare [PDF]

open access: yes, 2018
In this Letter, we present a spectacular eruptive flare (X8.2) associated with a coronal mass ejection on 2017 September 10 at the west limb of the Sun.
Xiaoli Yan   +6 more
semanticscholar   +1 more source

Radiographic Study of Developmental Alteration in Tooth Number Among Children in IIUM Dental Clinic [PDF]

open access: yes, 2016
Background: The aim of this research was to determine the prevalence, distribution and association of developmental alteration in tooth number with gender, location, and presence of delayed eruption of tooth among children who attended to Student's ...
Ardini, Y. D. (Yunita)   +3 more
core   +3 more sources

Evaluation of Knowledge, Attitude, and Practices Regarding Teething among the Mothers of Children Aged 6 Months to 3 Years – A Cross-sectional Questionnaire Study

open access: yesJournal of the Scientific Society
Background: The appearance of the first tooth in a child’s mouth is considered a major developmental milestone. The entire process typically takes about two and a half to 3 years.
Aishwarya A. Patil   +5 more
doaj   +1 more source

Ectopic Eruption of Maxillary First Permanent Molars: Preliminary Results of Prevalence and Dentoskeletal Characteristics in Spanish Paediatric Population

open access: yesChildren, 2021
The ectopic eruption of the maxillary first permanent molar (EEM) is a local alteration of dental eruption with a multifactorial aetiology. The aims of our study were to determine the prevalence of the EEM in children and to analyse whether there is a ...
Alexandra Helm   +5 more
doaj   +1 more source

Cyclic lava effusion during the 2018 eruption of Kīlauea Volcano

open access: yesScience, 2019
Caldera collapse and flank eruption Real-time monitoring of volcanic eruptions involving caldera-forming events are rare (see the Perspective by Sigmundsson). Anderson et al.
M. Patrick   +9 more
semanticscholar   +1 more source

Magmatic Memories: Eldfell, 1973

open access: yesVolcanica
2023 marked the 50th anniversary of the 1973 Eldfell eruption on the island of Heimaey, Iceland. The eruption began unexpectedly at 1:50 a.m. on the 23rd of January 1973, creating a need to evacuate all 5300 residents to the Icelandic mainland by fishing
Rhian Meara   +4 more
doaj   +1 more source

Rapid response petrology for the opening eruptive phase of the 2021 Cumbre Vieja eruption, La Palma, Canary Islands

open access: yesVolcanica, 2022
How and why magmatic systems reactivate and evolve is a critical question for monitoring and hazard mitigation efforts during initial response and ongoing volcanic crisis management.
Matthew J. Pankhurst   +12 more
doaj   +1 more source

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