The triggering effect for the face pumping of Nd:YVO₄ disc medium of 4×5×0.5 mm was investigated using bulk diode laser at different resonator cavity length in pulse mode and at repetition rate of 1.3kHz. The maximum emitted peak power was found to be 100, 82, and 66 mW for resonator lengths of 10, 13.5, and 17.5 cm respectively, while the threshold pumping power was found to be 41mW. The maximum emitted peak power obtained was 300 mW when using external triggering and 10cm length, with repetition of 3Hz.

The Vogue of the Restoration Comedy of Manners and George Etherage's The Man of Mode; or, Sir Fopling Flutter

يمثل التراث العربي منبعا يمكن أن تستقى منه المصطلحات ولا سيما المصطلحات العلميةعلى وجه الخصوص ذلك التمازج الحضاري الواقع بين الحضارة العربية في عصرها الذهبي والحضارات الأخرى نشأت في كنفه علوم متنوعة، تطلبت إيجاد مصطلحات مناسبة للتعبير عنها، فتصدى العلماء العرب لتلك المهمة وقاموا بوضع العديد من المصطلحات المعبرة عن تلك العلوم، وقد أخذت هذه المصطلحات أشكالا مختلفة منها ما جاء مفردًا ومنها ما جاء مركبًا بسيط

The present research had dealt with preparing  bars  with the length of about  (13 cm) and  adiametar  of  (1.5 cm) of composite materials with metal  matrix  represented by (Al-Cu-Mg) alloy cast enforced by (ZrO₂) particles with chosen weight  percentages (1.5, 2.5 ,3.5, 5.5 %). The base  cast and the composite  materials were prepared by casting method by uses vortex  Technique inorder to  fix up (ZrO₂) particles in homogeneous way on  the  base cast. In addition to  that, two main groups of composite materials were prepared depending on the particles size of (ZrO₂) , respectively.       &n

      The ethyl acetate synthesis via heterogeneous reactive distillation is studied experimentally using ethanol and acetic acid. Three types of cation exchanging resins were used as catalysts: Zerolit 225, Zerolit 226 and Ambylite 400. Experiments were carried out in two units of the same dimensions. Each unit consisted of three sections: rectifying, reactive and stripping sections of heights (60+25+20) cm respectively and 2.5cm column diameter. The first unit (column-A-) was a fractionation type and the second unit (column-B-) was packed column. The packing type was hollow glass cylinders with 10 mm height, and 4, 5 mm inner and outer diameter respectively.

      The experiment

The study of cohomology groups is one of the most intensive and exciting researches that arises from algebraic topology. Particularly, the dimension of cohomology groups is a highly useful invariant which plays a rigorous role in the geometric classification of associative algebras. This work focuses on the applications of low dimensional cohomology groups. In this regards, the cohomology groups of degree zero and degree one of nilpotent associative algebras in dimension four are described in matrix form.

Abstract Definition of the specifics of color designation and color painting by M. Sholokhov. The general goal of the study determined the formulation and solution of the following tasks: -identify the color words «black» and «white» in the book of the novel, determine their semantics and frequency of use; -show the compatibility of color words in order to detect typical contexts for the implementation of aesthetic and social meanings of color vocabulary,. We determined the composition of the lexical-semantic group is based on the commonality of the logical-subject content of adjectives or their individual meanings, which is detected by the presence of connections between lexical meanings. Semantic connections between lexical meanings a

Abstract:             

                  The research seeks to identify the role of the International Assurance Standard (3402) in the auditor's procedures, as the importance of the research stems from providing assurance services for control tools through reports that are prepared according to this standard, which contribute to strengthening audit procedures through a proposed assurance program. Many conclusions were reached, the most important of which The assurance operations are considered among the operations with a special assignme