Necessary and sufficient conditions for the operator equation I AXAX n*, to have a real positive definite solution X are given. Based on these conditions, some properties of the operator A as well as relation between the solutions X andAare given.

The present study aimed to synthesize selenium nanoparticles (SeNPs) using aqueous extract of black currant as a reducing agent. The green synthesized black currant selenium nanoparticles (BCSeNPs) were identified by color change. The characterization of SeNPs was achieved by Ultraviolet-visible (UV–VIS) spectroscopy, scanning electron microscopy (SEM), X–ray diffraction analysis (XRD), and Fourier transform infrared spectroscopy (FTIR). These tests were used to detect: stability, morphology, size, crystalline nature, and functional groups present on the surface of BCSeNPs. The results revealed appearance of the brick-red color indicating the specific color of selenium nanoparticles, and UV-Vis spectroscopy showed band absorbanc

The photostabilization? of poly vinyl chloride (PVC) ? films has been investigated by using diamine derivatives. The? (PVC) films were? contained 0.5% weight? of diamine derivatives which prepared by the method of casting. The photostabilizations? ?of these compounds were determined by monitoring the carbonyl index value with irradiation time. Also, the effect ?of concentrations of additives (range 0.1-0.5wt) on the rate of photostabilization? process was studied. Therefore we found? that a increased photostabilization rates was increase with increasing? concentrations of compound. Besides, the influence? on film thickness? of photostabilization process was also studied; ?and the results? showed that? the increasing of film thickness incr

FUZZY CONTROLLERS F'OR SINGLE POINT CONTROLLER-I (SPC-l) SYSTEMS

Ninety eight mobile samples, (54) galaxy phone and (44) I phone, were swabbed for bacterial culture determination by culturing on MacConky agar , Blood agar , Mannitol salt agar , Muller Hinton agar .Staphylococcuswas the highest frequent isolated bacteria from Galaxy phone (33%) and I phone (37%). This study revealed that galaxy phone appears less contaminated with bacteria, the ratio of non-contaminated devices is (44%) when compared with I phone (9%). Sensitivity test showed that Ogmintin have the lowest effect on Staphylococcusisolated from both type of devices while cefitriaxone have the highest effect. DNA of isolate from galaxy 31 that exhibit highest resistance against antibiotics was extracted and 16S rRNA gene was polymerized by P

لقد كانت الصروح المعمارية العملاقة و النصب والتماثيل الكبيرة التي أنجزت على مر العصور منذ أن وعى الإنسان و أدرك الفن و الحاجة إليه، تنجز بمواد مقاومة للطبيعة ومتيسرة، وخير مثال على ذلك الحجر و المرمر بأنواعه المختلفة و مادة البرونز اذا أنكب النحاتون و المعماريون العراقيون وغيرهم على إنشاء أعمال و صروح مختلفة نحتية و هندسية كبيرة أريد لها أن تتحدى الطبيعة وتقاوم لآلاف السنين ،اذ وصلتنا وهي بأحسن حال، مثال ذ

الايهام في اللوحة لتشكيلية الاليات والوسائط في اعمال الفنان كاظم حيدر

The Chain's experience of reform and development monopolized with deep and exclusive concerns of the world.

Starting from the academic departments of universities and researches and study centers to the world's organizations and institutes passing through the government and the official systems in many countries that get affected , positively or negatively, now or later by china's economic development .

Searching in the china's experience of reform and development  is important because it takes place in a developing country in which the leadership is succeeded in choosing the right methodology an model of changing and operating economics, making use of all the past national a