المؤتمرات العلمية: التقديمات الحديثة
الآن تُعرض المواد 101 -- 120 من 164
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كيفية الاستفادة من مخلفات الخرسانة في حالتها الطازجة
(CEST-2018, 2018-09-27)جزء كبير من الخرسانة في حالتها الطازجة والزائدة عن الكميات الفعلية المراد صبها تتحول إلى مخلفات صلدة مما يترتب عليه تكلفة عالية لإعادة تدويرها في هذه الحالة، وإذ تعتبر الخرسانة ثاني أكثر مادة استهلاكاً بعد الماء عليه فمن ... -
Particle Size Dependence of MnO Reduction for Fabrication of Composite vir Stir Casting
(CEST-2018, 2018-09-27)In the present work, a composite of Al matrix reinforced with 10% MnO particles has been developed using stir casting technique. MnO with particles size of range of 53 to 90 μm for composite (A) and 188 to 250 μm for ... -
High Density Polyethylene/Libyan Kaolin Clay Nanocomposites: Effect of Clay Particle Size on Rheological, Surface and Mechanical Properties
(CEST-2018, 2018-09-27)This research work focuses on the effect of Libyan Kaolin clay particle size on the reheological, surface and mechanical properties of high density polyethylene (HDPE)/clay nanocomposites. Three polymer clay nanocomposites ... -
Design Of Reinforced Concrete Beams Using Two different Specification
(CEST-2018, 2018-09-27)Nowadays, reinforced concrete beams are designed using traditional specification, such as BS8110 and Eurocode2 based on truss action. In this research BS8110 and Eurocode2 specification of designing a beam for flexure ... -
Monitoring Mis-Operating Conditions of Journal Bearings based on Modulation Signal Bispectrum Analysis of Vibration Signals
(CEST_2018, 2018-09-27)Journal bearings are widely used to undertake a wide range of operating conditions. Under high radial load, low rotating speed and thin lubrication films, asperity collisions between the journal and the bearing surfaces ... -
Theoretical Investigation of an Indirect Evaporative Air Cooling System
(CEST-2018, 2018-09-27)In this paper an indirect evaporative cooler theoretically investigated. Because of its low cost and low environment pollution, the indirect evaporative coolers have great potential as an alternative to conventional air ... -
Aerodynamic Effects of Blade Positive Sweep in Axial Flow Cascades
(CEST-2018, 2018-09-27)In this work, the effects of sweep applied to rotor of axial flow turbomachines were investigated by means of applying computational fluid dynamics (CFD) tools. Low-aspect-ratio rotors of positive sweep (PSW) have been ... -
Modeling effects of outlet nozzle geometry on swirling flows in gas turbine
(CEST-2018, 2018-09-27)Swirl stabilised combustion is one of the most successful technologies for flame stabilisation in gas turbine combustors. Lean premixed combustion systems allow the reduction of NOx coupled with fair flame stability. The ... -
Investigations of Kaolin Clay Collapse Behavior Using an Oedometer Apparatus
(CEST-2018CE, 2018-09-20)Geotechnical engineers face serious problems when construction sites contain collapsible soils, which are known by their strength when dry and experience sudden excessive settlement when inundated. Response-to-wetting ... -
Nonlinear Structural Dynamic Response of Multi-Story Buildings Under Seismic Loading
(CEST-2018, 2018-09-27)A study of earthquakes in the world is performed, and also a study of methods of dynamic analysis suitable for use with linear and nonlinear systems is made with a stress on the nonlinear response of buildings due to ... -
Seismic response of reinforced concrete buildings as predicated by the draft of Libyan standard (DSLS-1977) and (IBC-2009)
(CEST-2018, 2018-09-27)The draft of suggested Libyan Standard (DSLS-1977) is the only code of practice for designing and construction of earthquake resistant buildings in Libya, was first proposed by the Ministry of Housing in 1977, it is still ... -
Influence of Coolant Concentration on Surface Roughness during Turning of Steel C-60
(CEST-2018, 2018-09-27)During recent years, considerable attention has been paid to the during turning operations, to improve forming the outer layer, such as surface cooling which enhances some of the surface characteristics and producing a ... -
Effects of Spring Stiffness on Suspension Performances Using Full Vehicle Models
(CEST-2018CE, 2018-09-27)Suspension system has significant influence on the passenger safety, providing comfortable ride, stability, and handling of the vehicle. The aims of the present research are to investigate and quantify the effect of spring ... -
Effects of Different Fluids Properties on Cavitation Performance in Centrifugal PumpGhidhan
(CEST-2018, 2018-09-27)Cavitation, which is the formation and collapse of vaporous cavities in flowing liquids, can degrade the performance of pumps and other hydraulic equipment. The aims of the present research are to investigate the effect ... -
Mapping Of Sea Water Intrusion in the Western Libyan Coast Using Geo-electrical Method: Case Study
(CEST-2018, 2018-09-27)As most of the Libyan population live in the north side of the country; mainly in the western coastal zone; the sea water intrusion is a vital phenomena that need to be studied to locate, measure its diffusion rate, and ... -
Effect of Corrugation Geometry And Shape On Energy Absorption of Composite Plate
(CEST-2018, 2018-09-27)It has been observed that there is a considerable interest in recent years regarding materials which have high crushing ability particularly in energy absorption in relation to car and allied industries . An important ... -
Effects of Reduction in Construction Temperature on Workability of Warm Mix Asphalt Incorporating Rh-wma Additive
(CEST-2018, 2018-09-27)Conventional Hot Mix Asphalt (HMA) has been the primary material used in pavement in past decades. Recently, compared to conventional HMA, Warm Mix Asphalt (WMA) has shown great potential and offers benefits not given by ... -
Thermal Performance of a Heat Pipe with Different Working Fluids
(CEST-2018, 2018-09-27)The use of Heat pipes, for a variety of applications, has increased worldwide due to them achieving high thermal efficiencies. Heat pipes in evacuated tube solar collector systems, in modern domestic water heating, comprise ... -
Simple and Sustainable Constipate to Save Cost and Time for Structure Constructions
(CEST-2018, 2018-09-27)The energy required producing the structural elements such as concrete, steel; wood, etc. have serious environmental and financial consequences. The energy analysis, therefore, must take into consideration the added cost ... -
Built to Code Building Envelop Versus Sustainability of High-Rise Building Performance
(CEST-2018, 2018-09-27)Global warming and climate change are major challenges facing the nation and the world. More than two thirds of the electric energy and one third of the total energy are used to heat, cool, and operate buildings, representing ...