In the present study, nanoporous material type MCM-41 was prepared by the sol-gel technique and was used as a carrier for prednisolone (PRD) drug delivery. The structural properties of mesoporous were fully characterized by X-ray diffraction (XRD), N2 adsorption /desorption and Fourier-transform infrared (FTIR). The mass transfer in term of adsorption process (loading) and desorption process (releasing) properties were investigated. The maximum drug loading efficiency was equal to 38% and 47.5% at different concentrations. The PRD released was prudently studied in water media of pH 6.8 simulated body fluid (SBF) in according to "United State Pharmacopeia (USP38)". The results proved that the release of prednisolone from MCM-41 was (69.4%) after 24 hr. The data of the released PRD was found to be submitted to a Korsmeyer–Peppas model.
The aim of this research is to study the surface alteration characteristics and surface morphology of the superhydrophobic/hydrophobic nanocomposite coatings prepared by an electrospinning method to coat various materials such as glass and metal. This is considered as a low cost method of fabrication for polymer solutions of Polystyrene (PS), Polymethylmethacrylate (PMMA) and Silicone Rubber (RTV). Si were prepared in various wt% of composition for each solutions. Contact angle measurement, surface tension, viscosity, roughness tests were calculated for all specimens. SEM showed the morphology of the surfaces after coated. PS and PMMA showed superhydrophobic properties for metal substrate, while Si showed hydroph
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فسيفساء قبة الصخرة دراسة تحليلية
Continuous improvement, or Kaizen, is a philosophy that is based on the idea of continuously finding ways to improve things. From this point of view, continuous improvement is not limited to the quality of products or services but it also applies to all the processes in the organization. During the last two decades several continuous improvement approaches were developed and marketed. The advocates of each approach claim that their approach is the best, however all the approaches had their own advantages and disadvantages and had their share of criticism. The important question is how to choose the right continuous improvement approach? This research work addresses the philosophy, the concepts, the assumptio
... Show MoreIntelligence is the production of nervous system function and it's contents memory and creative thinking and understanding and other processes. It's a general cognitive ability and it's a concept. It's essential for good judgment and reasoning, there's an argument about definition of intelligence, is it one ability or multiple abilities. Multiple intelligences theory presented by (Gardner 1983) view intelligence as composing from six types of intelligences: (1) linguistic. (2) mathematical. (3) visual – spatial. (4) musical. (5) bodily – kinesthetic. (6) personal. Present research has reached to several conclusions. Most important one is that multiple intelligences theory is based on the conception of distinct varieties of intelligen
... Show MoreThis research examines the electronic check slip of an educational doctrinal study, in terms of explaining the truth of the electronic check and the legal organization of it and the way it is handled, and then devising the jurisprudence related to it
The Baha'is are a group that belongs to the Baha'iya, the Baha'iya according to the encyclopedia of Religion Sciences is a modern religious sect appeared in existence in the middle of the ninetieth century. The number of their believers is around six million people of different parts of the world. its main center lies in Haifa city in Palestine
This research examines the electronic check slip of an educational doctrinal study, in terms of explaining the truth of the electronic check and the legal organization of it and the way it is handled, and then devising the jurisprudence related to it.
The divorce is one of the important problem that prominence in Iraq it needs a remedy speedily .
This problem appears specially at the war of 2003 , it is effected on culture and it trances through communications tools , internet and satellite .
Supreme judicial council recorded about (41536) divorced cases , whereas the rate of this number arise to (87.530) through 2012 , in the same time the Iraqi courts recorded about 20%-30% of wedding cases .
The two researchers focused in their study on the concept of Alienation as a basic variable through its enhancing on the psychological health for divorces , in which they take this sense to connect it with their shortage that reflect negatively on their psychological and
... Show MoreIn the research I dealt with the form of the preference verb, as well as the elements of the preference noun and its states in its abstraction from the and addition and its conjugation with (the) and its addition to the negation and knowledge. It is (good, evil, and love) omitting the hamza in it.
The Baha'is are a group that belongs to the Baha'iya, the Baha'iya according to the encyclopedia of Religion Sciences is a modern religious sect appeared in existence in the middle of the ninetieth century. The number of their believers is around six million people of different parts of the world. its main center lies in Haifa city in Palestine.