Results 61 to 70 of about 478,207 (326)

Surface irregularities detected by flare inspection instrument [PDF]

open access: yes, 1969
Portable fiber optics sensing device which detects surface irregularities in a specific tube flare, permits discrete dimensional measurements to be taken, scanned and read out with only one setup. Capabilities of the instrument can be expanded to include
Zoike, H. M.
core   +1 more source

Enzymatic degradation of biopolymers in amorphous and molten states: mechanisms and applications

open access: yesFEBS Open Bio, EarlyView.
This review explains how polymer morphology and thermal state shape enzymatic degradation pathways, comparing amorphous and molten biopolymer structures. By integrating structure–reactivity principles with insights from thermodynamics and enzyme engineering, it highlights mechanisms that enable efficient polymer breakdown.
Anđela Pustak, Aleksandra Maršavelski
wiley   +1 more source

Feasibility of precise navigation in high and low latitude regions under scintillation conditions

open access: yesJournal of Space Weather and Space Climate, 2018
Scintillation is one of the most challenging problems in Global Navigation Satellite Systems (GNSS) navigation. This phenomenon appears when the radio signal passes through ionospheric irregularities.
Juan José Miguel   +9 more
doaj   +1 more source

On the Properties of and Ionospheric Conditions Associated With a Mid‐Latitude Scintillation Event Observed Over Southern United States

open access: yesSpace Weather, 2021
While low and high‐latitude ionospheric scintillation have been extensively reported, significantly less information is available about the properties of and conditions leading to mid‐latitude scintillations.
F. S. Rodrigues   +4 more
doaj   +1 more source

AN IRREGULAR CHALLENGE

open access: yesRevista de Lenguas para Fines Específicos, 2005
En este trabajo se presentan diferentes estrategias en la enseñanza de una lengua extranjera. Ellos se basan en una metodología audiovisual. Por un lado, el alumno siente el lenguaje vivo desde el principio, y de forma paralela, desempeña un papel activo papel en su aprendizaje.
openaire   +3 more sources

New advantages of the combined GPS and GLONASS observations for high-latitude ionospheric irregularities monitoring: case study of June 2015 geomagnetic storm

open access: yesEarth, Planets and Space, 2017
Monitoring, tracking and nowcasting of the ionospheric plasma density disturbances using dual-frequency measurements of the Global Positioning System (GPS) signals are effectively carried out during several decades.
I. Cherniak, I. Zakharenkova
semanticscholar   +1 more source

Prognostic Impact of European LeukemiaNet Genetic Risk Stratification System in Adult Patients With Acute Myeloid Leukemia

open access: yesAging and Cancer, EarlyView.
This study aimed to evaluate the prognostic value of ELN2017 in predicting survival outcomes and to assess the impact of clinical and molecular factors such as age, FLT3 and NPM1 mutations, and allogeneic hematopoietic stem cell transplantation (allo‐HSCT).
Mobina Shrestha   +4 more
wiley   +1 more source

Modeling TEC Irregularities in the Arctic Ionosphere Using Empirical Orthogonal Function Method

open access: yesSpace Weather, 2023
We develop a climatological model for the Arctic ionosphere based on more than one solar cycle of data (2010–2021) of the rate of change of the total electron content index (ROTI) maps from the International GNSS Service (IGS).
Yaqi Jin   +7 more
doaj   +1 more source

Ionosonde Observations of Spread F and Spread Es at Low and Middle Latitudes during the Recovery Phase of the 7–9 September 2017 Geomagnetic Storm

open access: yesRemote Sensing, 2021
This study presents observations of nighttime spread F/ionospheric irregularities and spread Es at low and middle latitudes in the South East Asia longitude of China sectors during the recovery phase of the 7–9 September 2017 geomagnetic storm.
Lehui Wei   +7 more
doaj   +1 more source

Will Memantine Exacerbate Seizures in People With Epilepsy? A Prospective Cohort Study

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To evaluate whether add‐on memantine would exacerbate seizures in people with epilepsy. Methods This was a prospective cohort study. People with epilepsy diagnosed with cognitive impairment were consecutively invited. Those who agreed were followed up for at least 24 weeks.
Peiyu Wang   +7 more
wiley   +1 more source

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