One technique used to prepare nanoparticles material is Pulsed Laser Ablation in Liquid (PLAL), Silver Oxide nanoparticles (AgO) were prepared by using this technique, where silver target was submerged in ultra-pure water (UPW) at room temperature after that Nd:Yag laser which characteristics by 1064 nm wavelength, Q-switched, and 6ns pulse duration was used to irradiated silver target. This preparation method was used to study the effects of laser irradiation on Nanoparticles synthesized by used varying laser pulse energy 1000 mJ, 500 mJ, and 100 mJ, with 500 pulses each time on the particle size. Nanoparticles are characterized using XRD, SEM, AFM, and UV-Visible spectroscopy. All the structural peaks determined by the XRD test can be indexed as face-centered cubic (FCC) type, the stronger crystalline orientation is located in the (111) plane. The nanoscale particles have an almost spherical shape as inferred from the SEM images. In (1000) mJ laser pulse energy the best smallest particle size was produced. According to AFM results of all films, the particle size 32.45nm, 64.3nm, and 67.86nm respectively for 1000 mJ, 500 mJ, and 100 mJ , the surface roughness affected and increased as increase the laser energy because the increase particle size and aggregation of partials. UV-Visible spectroscopy measured the absorbance of the silver nanoparticle prepared which is increased as increase pulsed laser ablation energy at wavelength 440 nm.
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Declaration has become today has an important and active and influential role in the recipient public life، and are concentrated advertising on the creativity component manufacture to attract his attention toward what to be announced from a variety products، and is dominated by television commercials tempo and imagination، and display them a variety of ways catches the attention and an impressive simulates the their senses of hearing and sight، to influence in the receiver and the public paid for purchase. Through it crystallization the subject of our research on the importance of creativity in television advertising and effective for attracting the attention of the publi |
أن التطور الاقتصادي في أية دولة إنما يقاس بالدور الذي يلعبه القطاع الصناعي في اقتصادياتها، ومقدار ما يسهم به في الناتج المحلي الأجمالي. ولا يخفى أن ينسب ذلك إلى خصوصيات هذا القطاع بوصفه الميدان الذي تتحقق فيه انجازات الثورة العلمية والتكنولوجية أكثر من غيره من الميادين، وأرتباطاته الأمامية والخلفية مع سائر القطاعات. يضاف إلى ذلك أن القطاعات الأخرى تتأثر ايجاباً بنمو القطاع الصناعي، كما انه المسؤول
... Show MoreThe theory of probabilistic programming may be conceived in several different ways. As a method of programming it analyses the implications of probabilistic variations in the parameter space of linear or nonlinear programming model. The generating mechanism of such probabilistic variations in the economic models may be due to incomplete information about changes in demand, production and technology, specification errors about the econometric relations presumed for different economic agents, uncertainty of various sorts and the consequences of imperfect aggregation or disaggregating of economic variables. In this Research we discuss the probabilistic programming problem when the coefficient bi is random variable
... Show MoreThis paper discuses the mindset contribution of the organization Science in organizational effectiveness (OE), and the most valuable thoughts they introduced in this subject, starting from the pre- classical era, through classical era to present time. This paper has identified the main contribution in OE. The concept of OE didn’t arise until what had been introduced by Chester Barnard, although Max Weber mentioned this concept in his bureaucratic theory, but he didn’t explain it as Barnard does. After that no clear focus was pointed to this subject until Peter Drucker did so, which considered as the main participant in OE after Barnard. After that many researchers be interested in OE and they start studying this subject like
... Show Moreمكانية استخدام السوق المالية في التنبؤ بالدورات الاقتصادية
المقدمة
تجدد الاهتمام بموضوع نوعية حياة العمل (Quality of life) الذي يرمز له اختصارا (QWL)، في السنوات الأخيرة الماضية، وبمطلع الألفية الثالثة على وجه التحديد، من قبل الباحثين الأكاديميين والمهتمين الممارسين في منظمات الأعمال، وذلك بوصفهم إليه بأنه أهم مصادر الرضا للعاملين، والعنصر المميز لبيئة عمل منظمة ما عن غيرها. وهنا، قد برزت الاضطلاع بالمسؤولية الأخ
... Show MoreThis study aims to recognize the process of using computer in publicschools in Ma`an governorate in terms of hardware, capabilities, and teachers usage. It also aims to identify the most important obstacles those schools face from a teachers perspective.
The study sample consists of (150) teachers from different disciplines. The researcher prepared two questionnaires related to the research pivotal, then presented to a group of arbitrators to be used in this final form. The data was analyzed statistically and the study concluded that there is a shortage in the computer services provided to teachers, and there is a w
... Show MoreThe research aims to know the impact of workers values on their performance which is reflected on increasing productivity and improving its quality as well as the organization's progress and success. Application of this research took place in the General Company Of Electrical Industries; it contained four main pillars; the first involved research methodology، regarding the problem، importance، aim، basic theory، and method of data collection، the second is dedicated to the theoretical framework related to the research basic variables (values and workgroups) the third is assigned to analyze the actual data by using number of statistical methods، such as mathematical medium and standard deviation and also spearman rank
... Show Moreانطلاقاً من ضرورات التجديد والتطوير لمجلتنا العزيزة، ستجرى اضافات عليها بين الحين والآخر، قد تتناول شكلياتها و/ او محتوياتها. والبداية ستكون بترجمة المقالات والبحوث التي تقع في اختصاصها من المجلات الاجنبية المرموقة عالمياً، فإختارت هيئة التحرير المقالات الخمسة التي سيرد ذكرها لاحقاً للقيام بترجمتها بأسلوب علمي يعطي للتصرف والاضافات حدوداً لتصبح مقبولة وسهلة على القراء. فالمهمة هذه وان كانت صعبة وتت
... Show MoreSo I present in the hands of the honorable reader what God Almighty has made easy for me in terms of what I dealt with in the rule (the principle of permissive things) and what branches from it and what is related to it.
This research was divided into an introduction, a preface, three demands, and a conclusion.
The preamble is to explain the meaning of the rule in language and terminology and the definition of the legal rule and what is related to it. The first requirement is to explain the rule that we have in our hands and the words related to its text - and is it a fundamentalist or jurisprudential rule? .
As for the second requirement - in the difference of scholars and their opinions in whether the origin of things is permi