A5059786560- Geology and Paleoclimatology Research
- Paleontology and Stratigraphy of Fossils
- Evolution and Paleontology Studies
- Marine and environmental studies
- Marine Biology and Ecology Research
- Reservoir Engineering and Simulation Methods
- Hydrocarbon exploration and reservoir analysis
- Subterranean biodiversity and taxonomy
- Methane Hydrates and Related Phenomena
- Geological formations and processes
- Paleontology and Evolutionary Biology
- Myofascial pain diagnosis and treatment
- Ichthyology and Marine Biology
- Karst Systems and Hydrogeology
- Aluminum Alloys Composites Properties
- Therapeutic Uses of Natural Elements
- Seismic Imaging and Inversion Techniques
- Calcium Carbonate Crystallization and Inhibition
- Metal complexes synthesis and properties
- Balance, Gait, and Falls Prevention
- Cephalopods and Marine Biology
- Geochemistry and Geologic Mapping
- Magnesium Alloys: Properties and Applications
- Musculoskeletal pain and rehabilitation
- Coral and Marine Ecosystems Studies
Al-Azhar University
2016-2025
Cairo University
2024
King Khalid University
2022
Alexandria University
2000
Research Article| April 01, 2000 THE RESPONSE OF BENTHIC FORAMINIFERA AND OSTRACODS TO VARIOUS POLLUTION SOURCES: A STUDY FROM TWO LAGOONS IN EGYPT Ashraf M. Samir Department of Geology, Alexandria University, P.O. Box 21526, Alexandria, Egypt Search for other works by this author on: GSW Google Scholar Author and Article Information Publisher: Cushman Foundation Foraminiferal Received: 13 Apr 1998 Accepted: 18 Aug 1999 First Online: 03 Mar 2017 Online ISSN: 1943-264X Print 0096-1191 ©...
Abstract This study investigates ostracod faunas from the well-preserved Paleocene to lower Eocene sedimentary succession at Wadi Tarfa, North Eastern Desert, Egypt. A total of 22 species and subspecies across 16 genera 8 families were identified 57 samples. Three zones identified: Doricythereis jordanica Zone, Cytheropteron toshkaensis Phalcocythere horraensis based on stratigraphic distribution fauna. However, correlations with other sections revealed inconsistencies in first last...
Abstract The Egyptian lower Eocene carbonate rocks (Thebes Formation) are part of an extensive platform formed during eustatic regression along the Tethyan Ocean's southern margin. These essential in developing Egypt's petroleum system because they can operate as vertical seals specific basins or source-reservoir rocks. However, few in-depth studies have been conducted to explore diagenetic history, pore system, petrophysical characteristics, and sequence stratigraphic framework these its...
Abstract The Late Cretaceous was a time of high eustatic sea level that enabled extensive epicontinental seaways and carbonate platforms across the Tethyan Realm, providing favorable habitats for oyster communities to flourish. This study focuses on Campanian oysters from North Eastern Desert Egypt regarding taxonomy, palaeoecology, palaeobiogeography. Three species, Nicaisolopha nicaisei (Coquand, 1862), Pycnodonte ( Phygraea ) vesicularis (Lamarck, 1806), Ambigostrea bretoni (Thomas Peron,...
The calcareous nannofossil and foraminiferal analyses have been integrated to build a detailed chronostratigraphic scheme for the upper Oligocene–middle Miocene succession in Nukhul–Sudr area, west–central Sinai, Egypt. palaeoenvironmental conditions of studied were assessed using palaeoecologic preferences species, benthic foraminifera, planktonic/benthic (P/B) ratios. Six complete two incomplete depositional sequences bounded by seven sequence boundaries distinguished sections based on...
This investigation deals with the litho-and biostratigraphy of Middle Miocene and Pliocene subsurface successions Nile Delta region, Egypt. Fifty planktonic foraminiferal species have been recorded from Abu Madi-1 well. The stratigraphical distribution these Foraminifera in studied well permits recognition four zones. Globorotalia mayeri Zone ; Sphaeroidinellopsis seminulina -subdehiscens, puncticulata Zones Early Globigeri-noides obliquus extremus Pliocene. These zones are correlated...
Abstract The effect of Ca elements on the microstructure, mechanical properties and corrosion behavior extruded AZ61-1Nd-xCa (x=0, 0.5, 1, 2 wt.%) alloys were investigated. Al-Nd phase Al2Ca particles are dynamically precipitated in alloys. volume fraction precipitates increases with increase content. Moreover, addition can refine grain size. tensile strength studied remains almost constant their hardness increasing Regretfully, presence brittle Ca-alloyed AZ61-Nd decreases significantly...