scholarly journals Characterization of Ionospheric Delay and Forecasting Using GPS-TEC over Equatorial Region, Malaysia

2020 ◽  
Vol 63 (2) ◽  
Author(s):  
Nouf Ismail ◽  
Mardina Abdullah ◽  
Siti Aminah Bahari
Keyword(s):  
Equatorial Region ◽  
Ionospheric Delay ◽  
Gps Tec

Characterization of low latitude GPS-TEC during very low solar activity phase

2010 ◽  
Vol 72 (17) ◽  
pp. 1309-1317 ◽  
Author(s):  
Praveen Galav ◽  
N. Dashora ◽  
S. Sharma ◽  
R. Pandey
Keyword(s):  
Solar Activity ◽  
Low Latitude ◽  
Gps Tec ◽  
Activity Phase

Demarcation of solar cycle 24 and characterization of ionospheric GPS-TEC towards the western part of India

2020 ◽  
Author(s):  
Rakesh K. Dumka ◽  
Donupudi SuriBabu ◽  
Ajay Kumar Taloor ◽  
Sandip Prajapati ◽  
B.S. Kotlia
Keyword(s):  
Solar Cycle ◽  
Gps Tec ◽  
Solar Cycle 24 ◽  
Cycle 24

scholarly journals Physical-Chemical and Mechanical Characterization of the Bast Fibers of <i>Triumfetta cordifolia</i> A.Rich. from the Equatorial Region of Cameroon

2020 ◽  
Vol 08 (04) ◽  
pp. 163-176
Author(s):  
Armel Edwige Mewoli ◽  
César Segovia ◽  
Fabien Betene Ebanda ◽  
Atangana Ateba ◽  
Pierre Marcel Anicet Noah ◽  
...  
Keyword(s):  
Mechanical Characterization ◽  
Equatorial Region ◽  
Bast Fibers ◽  
Physical Chemical

Characterization of GPS-TEC over African equatorial ionization anomaly (EIA) region during 2009–2016

2019 ◽  
Vol 63 (1) ◽  
pp. 282-301 ◽  
Author(s):  
Temitope Seun Oluwadare ◽  
Chinh Nguyen Thai ◽  
Andrew Oke-Ovie Akala ◽  
Stefan Heise ◽  
Mahdi Alizadeh ◽  
...  
Keyword(s):  
Gps Tec ◽  
Equatorial Ionization Anomaly

Characterization of Human Spermatic Subpopulations by ConA-Binding Sites and Tyrosine Phosphorylation during in vitro Capacitation and Acrosome Reaction

2021 ◽  
pp. 1-9
Author(s):  
Paula Sáez-Espinosa ◽  
Alba López-Huedo ◽  
Laura Robles-Gómez ◽  
Natalia Huerta-Retamal ◽  
Jon Aizpurua ◽  
...  
Keyword(s):  
Tyrosine Phosphorylation ◽  
Binding Sites ◽  
Acrosome Reaction ◽  
Equatorial Region ◽  
Time Dependent ◽  
Strong Connection ◽  
Binding Residues ◽  
The Relationship

Spermatozoa capacitation is a time-dependent physiological process essential for acquiring the fertilizing capacity. In this context, reorganization of spermatozoa surface sugars and tyrosine phosphorylation are some of the most important biochemical changes involved in capacitation. However, the relationship between these 2 biomarkers remains poorly defined. By cytofluorescence we simultaneously characterized the head concanavalin A (ConA)-binding sites and the flagellar tyrosine phosphorylation before capacitation, during different capacitation times (1 and 4 h), and after acrosome reaction induction in human spermatozoa. The results showed a strong connection between ConA-label patterns and tyrosine phosphorylation according to the spermatozoa capacitation time and acrosomal status. Specifically, the spermatozoa subpopulation with phosphotyrosine presented proper sugar location (label in acrosomal and postacrosomal region) just after 1 h of capacitation, while cells without phosphotyrosine needed 4 h to do it. Moreover, after induction of spermatozoa acrosome reaction, phosphorylation was significantly correlated (<i>p</i> &#x3c; 0.05) with the relocation of ConA-binding residues to the equatorial region, regardless of capacitation time. Overall, these observations provide novel insights regarding spermatozoa subpopulations based on essential physiological events like capacitation and acrosome reaction, which could have potential implications in the improvement of spermatozoa selection techniques.

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