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Full-Text Articles in Physical Sciences and Mathematics

Electrocatalysis By Design: Low Dissolution Counter Electrode And Highly Efficient Nanostructured Electrocatalysts, Menna Hasan Sep 2022

Electrocatalysis By Design: Low Dissolution Counter Electrode And Highly Efficient Nanostructured Electrocatalysts, Menna Hasan

Theses and Dissertations

Water Electrolysis is one of the most promising techniques to generate H2 gas, which is an alternative clean source of energy. Hydrogen provides almost three times the energy provided by gasoline, helping to solve the global warming problem caused by the currently used fossil fuels. As any electrochemical reaction is composed of two half reactions, a setup of working and counter electrodes is used to study the catalytic activity towards the targeted reaction, where each electrode carries one of the two-half reactions. In this dissertation, the stability of a number of the commonly used counter electrodes was examined to identify …


Genetic Diversity Comparison Among Invasive Fish Populations (Nemipterus Randalli And Serranus Cabrilla) From Mediterranean And Red Sea Coastal Waters Using Cytochrome C Oxidase Subunit I (Coi), Joel Ogwang Feb 2019

Genetic Diversity Comparison Among Invasive Fish Populations (Nemipterus Randalli And Serranus Cabrilla) From Mediterranean And Red Sea Coastal Waters Using Cytochrome C Oxidase Subunit I (Coi), Joel Ogwang

Theses and Dissertations

Since the Suez Canal connected the Red Sea with the Mediterranean, several fish species have migrated between the two seas. Nemipterus randalli has crossed from the Red Sea to the Mediterranean (Lessepsian migration) whereas Serranus cabrilla is considered to have crossed in the reverse direction (anti-Lessepsian migration). Genetic variation between populations of these fish species on either side of the Suez Canal might provide valuable information on their patterns of migration. In this study, 600 bp of cytochrome c oxidase subunit I (COI) sequences were used to compare genetic diversity of populations of N. randalli from the eastern Mediterranean with …


Symmetry Groups & Atomic Structure, Magdy G Elias Jun 1994

Symmetry Groups & Atomic Structure, Magdy G Elias

Archived Theses and Dissertations

No abstract provided.


Crystallographic Transformations In Amorphous Titania Gels To The Anatase And Rutile Modifications, Wegdan Lotfi Abdel Khalek Jul 1990

Crystallographic Transformations In Amorphous Titania Gels To The Anatase And Rutile Modifications, Wegdan Lotfi Abdel Khalek

Archived Theses and Dissertations

No abstract provided.


A Spectroscopic Study Of The Interaction Between Some Divalent Metal Ions And Hexacyanocobaltate (Iii), Yasser Ismail Ahmed Jan 1990

A Spectroscopic Study Of The Interaction Between Some Divalent Metal Ions And Hexacyanocobaltate (Iii), Yasser Ismail Ahmed

Archived Theses and Dissertations

No abstract provided.


Chemical And Mineralogical Determination Of Kenyan Clay-Rock (Kissi Soapstone), Abraham Seyoum Berhe Apr 1984

Chemical And Mineralogical Determination Of Kenyan Clay-Rock (Kissi Soapstone), Abraham Seyoum Berhe

Archived Theses and Dissertations

No abstract provided.


Bonding Effects On X-Ray Diffraction Intensities In Amorphous Silicon, Essam El Din E Aly May 1983

Bonding Effects On X-Ray Diffraction Intensities In Amorphous Silicon, Essam El Din E Aly

Archived Theses and Dissertations

No abstract provided.


Some Properties Of Iron Zinc Borate Glasses-Aluminium Composites, Faten Emile Guirguis Youssef Jan 1983

Some Properties Of Iron Zinc Borate Glasses-Aluminium Composites, Faten Emile Guirguis Youssef

Archived Theses and Dissertations

No abstract provided.


A Study Of The Oxidation Kinetics And Induced Plastic Deformation Of Tantalum, Laila Abdel Hadi Makhlouf Jun 1982

A Study Of The Oxidation Kinetics And Induced Plastic Deformation Of Tantalum, Laila Abdel Hadi Makhlouf

Archived Theses and Dissertations

No abstract provided.


Some Reactions Of Neamine Derivatives, Deena A Boraie Jan 1982

Some Reactions Of Neamine Derivatives, Deena A Boraie

Archived Theses and Dissertations

No abstract provided.


Configuration Interaction In Auger Spectra Of Magnesium, Mohamed Salah Sobhy Jan 1982

Configuration Interaction In Auger Spectra Of Magnesium, Mohamed Salah Sobhy

Archived Theses and Dissertations

No abstract provided.


Chemical Constituents Of Cassia Absus, Linn Seeds, Hanaa Ibrahim Assil Jan 1982

Chemical Constituents Of Cassia Absus, Linn Seeds, Hanaa Ibrahim Assil

Archived Theses and Dissertations

No abstract provided.


On The Mechanical Properties Of A1.20% Si Splat Cooled Alloy, Ahmed Wahid Tewfik Feb 1980

On The Mechanical Properties Of A1.20% Si Splat Cooled Alloy, Ahmed Wahid Tewfik

Archived Theses and Dissertations

No abstract provided.


Ferrimagnetic Resonance In Nife2o4, Yig, Fe3o4 And Mg-Fe Ferrite, Nabil Naeem Nagib Jul 1978

Ferrimagnetic Resonance In Nife2o4, Yig, Fe3o4 And Mg-Fe Ferrite, Nabil Naeem Nagib

Archived Theses and Dissertations

No abstract provided.


The Electric Resistivity Of Bismuth And Bismuth Based Alloys Between 295 And 520ok, Omar Selim Asim Es-Said Jul 1978

The Electric Resistivity Of Bismuth And Bismuth Based Alloys Between 295 And 520ok, Omar Selim Asim Es-Said

Archived Theses and Dissertations

No abstract provided.


Ferrimagnetic Resonance And Low Temperature Transition In Nickel And Cobalt Substituted Powder Magnetite, Mohie El-Din Yehia Mohie El-Din May 1978

Ferrimagnetic Resonance And Low Temperature Transition In Nickel And Cobalt Substituted Powder Magnetite, Mohie El-Din Yehia Mohie El-Din

Archived Theses and Dissertations

No abstract provided.


The Annealing Behavior Of Pure Bismuth And Bismuth-Antimony Alloys, El-Saied Mi Ali May 1977

The Annealing Behavior Of Pure Bismuth And Bismuth-Antimony Alloys, El-Saied Mi Ali

Archived Theses and Dissertations

No abstract provided.


Survey Study Of Some Egyptian Meteorites, Hedy Edward Assiouty Apr 1977

Survey Study Of Some Egyptian Meteorites, Hedy Edward Assiouty

Archived Theses and Dissertations

No abstract provided.


Some Quality Studies On The Sediments Of Lake Nasser, Khadiga Mostafa Hafez Jan 1977

Some Quality Studies On The Sediments Of Lake Nasser, Khadiga Mostafa Hafez

Archived Theses and Dissertations

No abstract provided.


Induced Color Centers In Α-Spodumene Called Kunzite, Maher Helmy Labib Jan 1977

Induced Color Centers In Α-Spodumene Called Kunzite, Maher Helmy Labib

Archived Theses and Dissertations

No abstract provided.


Lattice Vibrations Of A Planar Hexagonal Structure, Hani Henry Ibrahim Abou-Seif Jun 1976

Lattice Vibrations Of A Planar Hexagonal Structure, Hani Henry Ibrahim Abou-Seif

Archived Theses and Dissertations

No abstract provided.


Microindentation Hardness Variation As A Function Of Composition For Some Lead Glasses, Hamdi Mohammed Kandil Jan 1976

Microindentation Hardness Variation As A Function Of Composition For Some Lead Glasses, Hamdi Mohammed Kandil

Archived Theses and Dissertations

No abstract provided.


Some Physical Properties Of Cao-Fe2o3-B2o3 Glasses In Relation To Structure, Magda Fouad Hayek Jan 1976

Some Physical Properties Of Cao-Fe2o3-B2o3 Glasses In Relation To Structure, Magda Fouad Hayek

Archived Theses and Dissertations

No abstract provided.


Slag-Ceram From Egyptian Blast Furnace Slag, Abu Bakr Mahran Jan 1976

Slag-Ceram From Egyptian Blast Furnace Slag, Abu Bakr Mahran

Archived Theses and Dissertations

No abstract provided.


Dielectric Properties Of Single Crystal Nickel Ferrous Ferrites, Essam Fawzi Mina Jan 1976

Dielectric Properties Of Single Crystal Nickel Ferrous Ferrites, Essam Fawzi Mina

Archived Theses and Dissertations

No abstract provided.


A Field Theoretic Study Of Electron Phonon Interactions In Metals, Sami Hakim Mikhail Jul 1974

A Field Theoretic Study Of Electron Phonon Interactions In Metals, Sami Hakim Mikhail

Archived Theses and Dissertations

No abstract provided.


On The Effect Of Structure On Some Properties Of Some Aluminum Alloys, George Abdel Malak Gurgis Jun 1974

On The Effect Of Structure On Some Properties Of Some Aluminum Alloys, George Abdel Malak Gurgis

Archived Theses and Dissertations

No abstract provided.


An Electron Paramagnetic Resonance Study Of The Interaction Of Cupriethylenediamine Dihydroxide And Cuprammonium Hydroxide With Cellulose And Related Carbohydrates, Saba Mitri Saba Mattar Jun 1974

An Electron Paramagnetic Resonance Study Of The Interaction Of Cupriethylenediamine Dihydroxide And Cuprammonium Hydroxide With Cellulose And Related Carbohydrates, Saba Mitri Saba Mattar

Archived Theses and Dissertations

No abstract provided.


Isotope Effect On Some Electrical Properties In Mixed Alkali Glasses, Mahmoud Mohamed Abou El-Leil May 1974

Isotope Effect On Some Electrical Properties In Mixed Alkali Glasses, Mahmoud Mohamed Abou El-Leil

Archived Theses and Dissertations

No abstract provided.


A Study Of Avalanche Transit-Time Devices, Salah Mohamed Hamza May 1974

A Study Of Avalanche Transit-Time Devices, Salah Mohamed Hamza

Archived Theses and Dissertations

No abstract provided.