Among several separation processes, the air flotation distinguish as remarkably high potential separation process related to its high separation efficiency and throughput, energy-efficient, simple process, cost-effective, applicable to a wide range of oily wastewater and no by-products. The current study aimed to investigate the effect of the type and concentration of surfactant on the stability of oil-water emulsion and efficiency of the separation process. For this purpose, three types of surfactant where used (anionic SDS, mixed nonionic Span 85/Tween 80, and cationic CTAB). The results demonstrated that the Span 85/Tween 80 surfactant has the best stability, and it increases with the surfactant concentration augmentation. The removal ef

Rehabilitation robots are widely recognized as vital for restoring motor function in patients with lower-limb impairments. A Modified Fractional-Order Proportional-Integral-Derivative (MFOPID) controller is proposed to improve trajectory tracking of a 2-DoF Lower Limb Rehabilitation Exoskeleton Robot (LLRER). The classical FOPID is augmented with a modified control formulation by which steady-state error is reduced and the transient response is sharpened. Controller gains and fractional orders were tuned offline using a hybrid metaheuristic Improved Elk Herd Optimization hybridized with Grey Wolf and Multi-Verse Optimization algorithms (IElk-GM) so that exploration and exploitation are balanced. Superiority over the classical FOPID

The reaction of methyldopa with o-vanillin in refluxing ethanol afforded Schiff base and characterized through physical analysis with a number of spectra also the study of biological activity. The geometry of the Schiff base was identified through using (C.H.N) analysis, Mass, 1H-NMR, FT-IR, UV-Vis spectroscopy. Metal complexes of Cr3+, Mn2+, Co2+, Ni2+, Cu2+, Zn2+, Cd2+ and Hg2+ with Schiff base have been prepared in the molar ratio 2:1 (Metal:L), (L = Schiff base ligand) except Hg2+ at molar ratio 1:1 (Hg:L). The prepared complexes were characterized by using Mass, FT-IR and UV-Vis spectral studies, on other than magnetic properties and flame atomic absorption, conductivity measurements. According to the results a dinuclear octahedral geo

the  civil relation between Iraqis and Egyptian was close , it is clear that is the opening relation between two countries esoecally in trade and demand education , but after mongle occupation  , For the capital of the Abbasid Caliphate, the situation in  Baghdad, had changed in 656 AH/1258 AD,  the Iraqi migration  started security and safety,

فدهي قوس يف ةيداصتقلاا تادحولا ضعب يف نيرمثتسملا تارارق ىلع ءارضخلا ةبساحملا ريثأت ةسارد ىلا ثحبلا نم يلمعلا بناجلا تانايب عمج ىلع دامتعلااب ناثحابلا ماق ثحبلا فده قيقحتلو ، ةيلاملا قارولأل قارعلا نايبتسا ميمصت للاخ ىلا اهميدقتو يف ) نيرمثتسملاو , نييلخادلا نيققدملاو , نيبساحملاو , نييلاملا ءاردملا( ثحبلا ةنيع يف ةلجسملا تاكرشلا ضعب ةيلاملا قارولأل قارعلا قوس متو ثحبلا ناونعب قلعتت يتلا جئاتنلا جارخت

the  civil relation between Iraqis and Egyptian was close , it is clear that is the opening relation between two countries esoecally in trade and demand education , but after mongle occupation  , For the capital of the Abbasid Caliphate, the situation in  Baghdad, had changed in 656 AH/1258 AD,  the Iraqi migration  started security and safety, including scholars and writers, in addition to the presence of entire Iraqi families who immigrated to Egypt and resided there, including the family of Al-Hafiz Al-Iraqi The Ibn al-Kwaik family, the subject of the study, had an important impact on the scientific movement in Egypt.

The problem of job burnout has become one of the main problems for researchers in social welfare organizations (social protection bodies) - one of the formations of the Ministry of Labor and Social Affairs. Its negative effects increased in light of the COVID-19 pandemic, and in light of the Corona pandemic, the pressures and burdens of workers varied, which resulted in high rates of anxiety, tension, and intellectual and physical exhaustion, and then negatively affected their efficiency in performing work at the individual and organizational level, especially after the increasing tasks of these Bodies in carrying out their role in achieving the general goals and objectives as being The general goals are that they are responsible for provid

The research aims to measure the impact of managerial ability on income persistence for the industrial sector companies listed in the Iraqi Stock Exchange. The managers of these companies have managerial ability that may have an impact on achieving their objectives, setting their future policies and investing opportunities. Which may be reflected in many areas, including the level of profitability achieved and the possibility of continuity or sustainability? A model was used to measure managerial ability as well as a model to measure the income persistence in order to determine the relationship between them, The researchers found the absence of a statistically significant between managerial ability and the income persistence, which requi