Abstract: Microfluidic devices present unique advantages for the development of efficient drug assay and screening. The microfluidic platforms might offer a more rapid and cost-effective alternative. Fluids are confined in devices that have a significant dimension on the micrometer scale. Due to this extreme confinement, the volumes used for drug assays are tiny (milliliters to femtoliters).

 In this research, a microfluidic chip consists of micro-channels carved on substrate materials built by using Acrylic (Polymethyl Methacrylate, PMMA) chip was designed using a Carbon Dioxide (CO₂) laser machine. The CO2 parameters have influence on the width, depth, roughness of the chip. In order to have regular

The old ways of education has not been able to achieve the ultimate goal in the development of the child's personality and prepared for public life , so shall educators to adopt modern methods of learning such as cooperative learning , which takes into account the considerations psychology of children and their level of mental , as the collective learning is important for children mighty and vulnerable children and so by placing the child in front of something significant tangible and choose topics of relevance to the concerns of the child himself . ( Maroni , 2008 : 101-102 ) . Consisted importance of research of the most important goals of community child care and upbringing proper education to create him a good citizen intact,

A single-blind randomized controlled clinical trial in patients with deep caries and symptoms of reversible pulpitis compared outcomes from a self-limiting excavation protocol using chemomechanical Carisolv gel/operating microscope (self-limiting) versus selective removal to leathery dentin using rotary burs (control). This was followed by pulp protection with mineral trioxide aggregate (MTA) and restoration with glass ionomer cement and resin composite, all in a single visit. The pulp sensibility and periapical health of teeth were assessed after 12 mo, in addition to the differences in bacterial tissue concentration postexcavation. Apical radiolucencies were assessed using cone beam computed tomography/periapical radiographs (CBC

The social networking sites have brought about fundamental changes and a qualitative shift in the marketing industry and its strategies. The Iraqi ministries have used this site i.e. Facebook to spread and disseminate values in order to consolidate it in Iraqi society which has witnessed many changes in all aspects of life.

   The researcher studies the pages of both ministries to know the values contained in the publications of the pages of these two ministries, the quality of grooming as well as the forms in which these values are marketed.

     The researcher uses a survey method and content analysis for the publications of these two pages during the study period starting from January 1, 2

The study addresses the problem of stagnation and declining economic growth rates in Arab countries since the eighties till today after the progress made by these countries in the sixties of the last century. The study reviews the e

Preparation of identical independent photons is the core of many quantum applications such as entanglement swapping and entangling process. In this work, Hong-Ou-Mandel experiment was performed to evaluate the degree of indistinguishability between independent photons generated from two independent weak coherent sources working at 640 nm. The visibility was 46%, close to the theoretical limit of 50%. The implemented setup can be adopted in quantum key distribution experiments carried out with free space as the channel link, as all the devices and components used are operative in the visible range of the electromagnetic spectrum.

In this work, the effect of different particle size on the nonlinear optical properties of silver nanoparticles in de-ionized water was studied. The experimental observation of the far field diffraction patterns by CCD camera in two and three dimensions. The maximum change of nonlinear refractive index and the relative phase shift were calculated. The self-defocusing technique was used with a continuous-wave radiation from DPSS Blue laser .The wavelength is 473 nm with an output power of 270 mW. All the Ag colloids samples containing the sizes 15, 30, 50, and 70 nm of silver nanoparticles used in the study were chemically prepared. It was found that the nonlinear refractive index is a particle size dependent and of the order of 10-7 cm2/

ٕ ضٞظ٤ق جالْطٌٞز ك٢ جالوخ هى ظٍٜ ً٘ٓ ظٌٜٞ جالوخ جٗٞ٤ُح٢ٗ جُوىْ٣ ، جي ضؼى ٌجكىج ٜٔٓح ُالوخ ذحؾحٚٓٗ جُٔهطِلس ؛ قط٠ أٚركص جُ٘ٞٛ٘ جٍُٓو٣س جُكى٣ػس ٝ جُٔؼحٍٚز ، ال ٌٜ٘ٔ٣ح ضكو٤ن ٖؼ٣ٍطٜح ٝ ٓطؼطٜح وٕٝ جالْطِٜحّ ٖٓ جألْطٌٞز ذ٘حت٤ح أٝ ك٣ٌٍح ، ًُج كوى ض٘حٍٝ جُركع ذىٌٙٝ ضٞظ٤ق جْطٌٞز ٕٖٞٗٔ جُطٌٞجض٤س ، ٢ٛٝ ٖٓ جالْحٍ٤٠ جُط٢ ٝؾىش قٌٟٞج ك٢ جالوخ جُؼح٢ُٔ ٝجُؼر١ٍ .جي ئٕ ضٞظ٤لٜح ك٢ جالوخ ٣ؼطٜ٤ح ذؼىج ٤ٓطحك٣ُ٤وح ٝجنٍ جٓٗح٢ٗ ٣ؿٔغ ك٢