National Research Institute of Astronomy and Geophysics NRIAG, Helwan, Egypt - Articles

Prominence Activity during the 2006 Total Solar Eclipse (Articles)

Beshir Marzouk

Natural Science Vol.10 No.4，April 4, 2018

DOI: 10.4236/ns.2018.104014 1,185 Downloads 2,661 Views Citations
Dynamics of Satellite Formation Utilizing the Perturbed Restricted Three-Body Problem (Articles)

Nabawia S. Khalifa

Journal of Applied Mathematics and Physics Vol.10 No.1，January 27, 2022

DOI: 10.4236/jamp.2022.101016 254 Downloads 1,036 Views Citations
Swift XRT Analysis of Type II-P Supernova SN 2008ij (Articles)

SH. M. Shehata, Ahmed M. Fouad, R. M. Samir, A. A. Shaker

International Journal of Astronomy and Astrophysics Vol.14 No.3，September 10, 2024

DOI: 10.4236/ijaa.2024.143014 57 Downloads 284 Views Citations
The Effect of Sun Elevation on the Twilight Stages in Malaysia (Articles)

Yasser Abdel-Fattah Abdel-Hadi, Amir Hussein Hassan

International Journal of Astronomy and Astrophysics Vol.12 No.1，February 11, 2022

DOI: 10.4236/ijaa.2022.121002 266 Downloads 1,383 Views Citations
Evaluation of Nile Delta-Mediterranean Sea Conjunction Using GPS, Satellite-Based Gravity and Altimetry Datasets (Articles)

Basem Elsaka, Ali M. Radwan, Mohamed Rashwan

Journal of Geoscience and Environment Protection Vol.8 No.2，February 5, 2020

DOI: 10.4236/gep.2020.82003 606 Downloads 1,831 Views Citations
Prediction of the Diffuse Solar Energy on Horizontal at Different Selected Locations (Articles)

Samy A. Khalil

Energy and Power Engineering Vol.14 No.11，November 9, 2022

DOI: 10.4236/epe.2022.1411034 203 Downloads 885 Views Citations
Integrated Geophysical Investigations to Detect the Shallow Subsurface Settings at New Sohag City, Egypt (Articles)

Hany Mesbah, Mohammed Shokry, Mamdouh Soliman, Magdy Atya

International Journal of Geosciences Vol.8 No.3，March 31, 2017

DOI: 10.4236/ijg.2017.83019 2,052 Downloads 3,888 Views Citations
On Approximate Solutions of Second-Order Linear Partial Differential Equations (Articles)

Yousry S. Hanna

Applied Mathematics Vol.3 No.9，September 27, 2012

DOI: 10.4236/am.2012.39148 5,618 Downloads 8,929 Views Citations
Influence of Solar Cycle Variations on Solar Spectral Radiation (Articles)

Usama Ali Rahoma, Rabab Helal

Atmospheric and Climate Sciences Vol.3 No.1，January 30, 2013

DOI: 10.4236/acs.2013.31007 5,100 Downloads 8,682 Views Citations
Performance of Incoming Solar Radiation Components in Partial Annular Solar Eclipse on June 21^st, 2020 in Helwan, Egypt (Articles)

Samy A. Khalil, A. H. Hassan, U. Ali Rahoma, A. Abulwfa, Ashraf S. Khamees

Open Journal of Applied Sciences Vol.11 No.3，March 18, 2021

DOI: 10.4236/ojapps.2021.113022 620 Downloads 1,469 Views Citations
Tracing of the Avenue of the Ram-Headed Sphinxes Remains Using Geophysical Investigations, Luxor, Egypt (Articles)

Alhussein A. Basheer, Abdelnasser M. Abdel-motaal, Ahmed El-Kotb, Ayman I. Taha, Mohammed A. Abdalla

International Journal of Geosciences Vol.5 No.8，July 30, 2014

DOI: 10.4236/ijg.2014.58070 2,982 Downloads 3,810 Views Citations
Studies of Tectonic Motion from Helwan-Satellite Laser Ranging Station (Articles)

Gamal F. Attia

International Journal of Astronomy and Astrophysics Vol.4 No.4，December 5, 2014

DOI: 10.4236/ijaa.2014.44055 3,399 Downloads 4,366 Views Citations
Appliance of Geophysical Methods to Detect the Ancient Remains at “Tell Defenneh” Area, Ismailia, Egypt (Articles)

Alhussein Adham Basheer, Ahmed El-Kotb Al-Imam, Abdelnasser Mohammed Abdelmotaal, Mostafa Sarhan Toni, Sayed Omar Elkhateeb

Archaeological Discovery Vol.2 No.3，July 23, 2014

DOI: 10.4236/ad.2014.23009 3,247 Downloads 4,982 Views Citations
On the Accuracy Assessment of the Latest Releases of GOCE Satellite-Based Geopotential Models with EGM2008 and Terrestrial GPS/Levelling and Gravity Data over Egypt (Articles)

Mohamed El-Ashquer, Basem Elsaka, Gamal El-Fiky

International Journal of Geosciences Vol.7 No.11，November 29, 2016

DOI: 10.4236/ijg.2016.711097 2,487 Downloads 4,154 Views Citations
On the Infinite Products of Matrices (Articles)

Yousry S. Hanna, Samya F. Ragheb

Advances in Pure Mathematics Vol.2 No.5，September 26, 2012

DOI: 10.4236/apm.2012.25050 3,991 Downloads 7,665 Views Citations
Feasible Multiple Satellite Mission Scenarios Flying in a Constellation for Refinement of the Gravity Field Recovery (Articles)

Basem Elsaka

International Journal of Geosciences Vol.5 No.3，March 27, 2014

DOI: 10.4236/ijg.2014.53027 4,385 Downloads 6,148 Views Citations
Anodic Coating Characteristics of Different Aluminum Alloys for Spacecraft Materials Applications (Articles)

Afaf M. Abd El-Hameed, Yehia A. Abdel-Aziz, Fatma S. El-Tokhy

Materials Sciences and Applications Vol.8 No.2，February 8, 2017

DOI: 10.4236/msa.2017.82013 4,026 Downloads 8,645 Views Citations
Sliding Mode Control of Chaotic Motion in Electrodynamic Tethered Satellite System in an Inclined Elliptical Plane (Articles)

Ahmad Yousof Ahmad Taha, Ahmed Magdy Abdelaziz, Abd El Hakeem Abd El Naby, Yehia A. Abdel-Aziz

Journal of Applied Mathematics and Physics Vol.13 No.5，May 26, 2025

DOI: 10.4236/jamp.2025.135098 22 Downloads 138 Views Citations
Spatio-Temporal Polar-Inclined Space Mission Architecture for a Refined Retrieve of the Earth’s Gravity Field (Articles)

Basem Elsaka

World Journal of Engineering and Technology Vol.7 No.4，November 26, 2019

DOI: 10.4236/wjet.2019.74047 529 Downloads 1,192 Views Citations
Spectral Evolution of Hercules X-1 over Main High State from RXTE/PCA Observations (Articles)

Denis A. Leahy, Mohammed H. Abdallah

Journal of High Energy Physics, Gravitation and Cosmology Vol.8 No.4，August 31, 2022

DOI: 10.4236/jhepgc.2022.84061 142 Downloads 554 Views Citations

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