A5087235050- Structural Behavior of Reinforced Concrete
- Geotechnical Engineering and Underground Structures
- Structural Load-Bearing Analysis
- Concrete Corrosion and Durability
- Geotechnical Engineering and Soil Stabilization
- Structural Response to Dynamic Loads
- Structural Engineering and Vibration Analysis
- Geotechnical Engineering and Soil Mechanics
- Innovative concrete reinforcement materials
- Infrastructure Maintenance and Monitoring
- Corrosion Behavior and Inhibition
- Bariatric Surgery and Outcomes
- Underwater Vehicles and Communication Systems
- Fluid Dynamics Simulations and Interactions
- Parathyroid Disorders and Treatments
- Seismic Performance and Analysis
- Crystallization and Solubility Studies
- Cardiovascular Health and Disease Prevention
- Pesticide and Herbicide Environmental Studies
- Cleft Lip and Palate Research
- Vitamin D Research Studies
- Agricultural Science and Fertilization
- Energy Efficient Wireless Sensor Networks
- Innovative Microfluidic and Catalytic Techniques Innovation
- Bone health and osteoporosis research
Cairo University
2018-2024
University of Al-Qadisiyah
2017
The University of Tokyo
2012-2013
University of Maryland, College Park
2005
Abstract Background & Aim Bariatric surgery is a valid treatment option for persons with non‐alcoholic fatty liver disease. This study prospectively examined the impact of laparoscopic sleeve gastrectomy (LSG) on histopathology, and blood levels adiponectin, leptin, resistin, pre‐B cell enhancing factor/Nampt/visfatin. Patients Methods In 81 patients disease who underwent LSG, paired biopsies specimens were obtained before 18 months after LSG. Differences between preoperative...
There has been a growing interest in the applications of wireless sensor networks unattended environments. In such applications, nodes are usually deployed randomly an area interest. Knowledge accurate node location is essential order to correlate gathered data origin sensed phenomena and assure relevance reported information. this paper, we present efficient anchor-free protocol for localization networks. Each discovers its neighbors that within transmission range estimates their ranges....
We postulated that the preoperative correction of vitamin D levels can significantly reduce incidence hunger bone syndrome among patients undergoing parathyroidectomy for primary hyperparathyroidism.We performed a prospective, randomized, open-label study on 102 with hyperparathyroidism and coexisting deficiency who were scheduled to undergo parathyroidectomy. Patients divided into following two groups: group I which included 52 did not receive supplementation; II 50 received cholecalciferol...
Abstract The combination of concrete-filled steel tube (CFST) columns and reinforced concrete flat slabs provides a suitable structural solution that can be used to replace traditional structures in high-rise buildings. connection between the CFST column RC slab is an important factor for this construction system operate efficiently. In study, new form has been proposed. This more constructability, where cut at level prevent separation inside as reinforcement allowed continue zone. joint...
Greater confinement of the soil foundation may globally reduce shear span length, which raise risk failure RC piles. On other hand, improve flexural ductility pile section locally. This study discusses these global and local impacts on RC-pile mechanistic behaviors, experimentally analytically. Small-scale mortar-based piles were newly produced as a mockup real-scale reinforced concrete so to obtain consistent nominal strength by reducing transfer along cracks overcome size effect. Then,...
Abstract Scaled-down-reinforced concrete beams with rectangular staggered continuous spiral stirrups are experimentally investigated. Scale-down RC were considered in the current research due to ease of construction and economic feasibility. As brittle shear failure should be avoided, trials have been conducted find an effective technique improve mechanism. Twenty-two investigated for behavior under 4-point static push-over load considering normal compared ones. Stirrup spacing, arm ratio...
Abstract Reinforced concrete columns are vital load-bearing elements, responsible for transferring vertical loads and resisting lateral forces. While numerous factors govern column performance, this study pinpoints cross-sectional shape, transverse reinforcement configuration, the corrosive threat as its primary areas of investigation. Thus, 20 small-scaled (1/8th scale) RC (square circular, with ties or spirals) were tested under various loading conditions. Columns divided into five groups....
This research aims to illustrate the corrosion process and its effect on deterioration of reinforced concrete (RC) isolated footings using a small-scale model (1/8) present results prototype-scale study numerical with different depths levels under axial load. The experimental program consisted testing five RC loading after subjecting them accelerated tests constant current. main variable in sample test was level. presents an approach, current method finite element (FEM) ABAQUS package,...
Abstract Underground reinforced concrete (RC) structures, such as tunnels and pipelines, are frequently employed in urban areas designed to withstand both static seismic loads, including those that occur during earthquakes. However, the inspection of deteriorated underground structures has yielded valuable findings for civil engineering community, highlighting need further experimental investigation various damage mechanisms affecting RC under different loading conditions. This research...
In existing design practices selection of circular or square column shape mostly depends upon architectural needs rather than structural behavior. The behavior equivalent area (circular and square), high strength reinforced concrete columns is reported to be same under monotonic loading conditions but their fatigue not well-established. This paper presents the comparison columns’ performance (load-deflection behavior) loading. Columns were casted in four configurations: shapes with without...
Small-scale RC models of both piles and tunnel duct s were produced as mockups reality loaded under soil confinement conditionsto investigate the damage evolution structural interacting with soil. Experimental v erifications usinga 3D nonlinear FE analysis program called COM3D, which was developed at University Tokyo, are introduce d. This has been used in practice for seismic performance a ssessment underground ducts in-ground LNG storage tanks consideration soil-structure interactionunder...
The nonlinear torsional behaviour of small-scale reinforced concrete (RC) beams with continuous staggered spiral as transverse reinforcement stirrups is experimentally investigated. Twelve miniatures RC were tested under torsion load considering the closed shape and compared ones. All scaled down to be one-eighth prototype beam size. main parameters considered in this research are stirrup spacing its configurations. Small scale taken into account existing study because their construction...
A field experiment was carried out during the winter season 2014-2015 in belongs to college of Agriculture, University Baghdad – ALJadiriyah order assess pesticides residues after harvesting wheat crop (Cultivar Iba’a 99) find degradation Atlantis WG {Mesosulfuron-methyl + Iodosulfuron-methyl-sodium} soil. concentration 200g.hˉ¹ and 300 g.hˉ¹ herbicide were used addition control line (without application). Results showed that, non -pesticides found one hour application due nature since it is...
There are many modern technologies for strengthening concrete. One of them is Carbon Fiber Reinforcement Polymer (CFRP) sheets. cases that require concrete strengthening, including the weakness from design strength due to exposure elements fires or less control quality. This research provides a theoretical study analyze behavior low RC beams strengthened with CFRP sheets using ANSYS software. The contained (75) beam model specimens. Six verifying results experimental tests. Forty five...