The presentwork is a theoretical study in the field of charged particle optics. It concentrates on the design of electrostatic enzil lens for focusing charge particles beams, using inverse method in designingthe electrostatic lens. The paraxial ray equation was solved to obtain the trajectory of the particles, the optical properties such as the focal length and spherical and chromatic aberration coefficients were determined. The shape of the electrode of the electrostatic lens were determined by solving poison equation and the results showed low values of spherical and chromatic aberrations, which are considered as good criteria for good design.
Ruthenium-Ruthenium and Ruthenium–ligand interactions in the triruthenium "[Ru3(μ-H)(μ3-κ2-Hamphox-N,N)(CO)9]" cluster are studied at DFT level of theory. The topological indices are evaluated in term of QTAIM (quantum theory of atoms in molecule). The computed topological parameters are in agreement with related transition metal complexes documented in the research papers. The QTAIM analysis of the bridged core part, i.e., Ru3H, analysis shows that there is no bond path and bond critical point (chemical bonding) between Ru(2) and Ru(3). Nevertheless, a non-negligible delocalization index for this non-bonding interaction is calculated
... Show MoreIntellectual and material displacement is one of the design strategies through many mechanisms and means, and depends on the idea of changing the shape within the internal spaces at times and has concepts related to the transformation at other times. And represented by the boxes for travelers, the research problem emerged through the following question: (What is the effectiveness of displacement in the formal structures in the interior design of historical sites), and the aim of the study is to reveal the reality of the use of historical internal spaces and to determine the formal displacement that occurs as a result of change and transformation, and it included two topics, the first topic Transformation and the effectiveness of formal d
... Show MoreThe Arab Muslime Paid agreat attention to the Islamic East, especially after their conquest to the Parisian lands, they went forword to continue their conquest till Transoxiara (the lands beyond the river). The research is included the Islamic efforts to conquest (Transoxiara) , They needed mouch time for more than 40 years to conquest it. To sattle their steps in it they used its leading figures to prevent the breaking of the agreement held between them as they were known for doing this before more than once. The main idea of this research is releated to study that history in the Arabic resources.
اﻟﺴﯿﺎق ﻓﻲ َأدرك ﻋﻠﻤﺎؤﻧﺎ اﻷواﺋﻞ أﺛﺮَ اﻟﺴﯿﺎق ﻗﺮﯾﻨﺔ ﻣﻦ اﻟﻘﺮاﺋﻦ اﻟﻤﺆﺛﺮة ﻓﻲ ﻣﻌﻨﻰ اﻟﺨﻄﺎب، وﻗﺪ ﻠﻤﺔ ّ وﺗﻤﺜﻞ ﻟﺪﯾﮭﻢ ﻓﻲ ﺟﺎﻧﺒﯿﻦ :اﻷول اﻟﺴﯿﺎق اﻟﻠﻐﻮي اﻟﺬي ﯾﻘﻮم ﻋﻠﻰ أﺳﺎس أن اﻟﻜ ،ﺗﻮﺟﯿﮫ اﻟﻤﻌﻨﻰ وﺗﺤﺪﯾﺪه ِﻜﻮن ﺣُﺴﻨﮭﺎ ورداءﺗﮭﺎ ﻓﻲ ﻧﻈﻤﮭﺎ، ّ ﻻ ﻗﯿﻤﺔ ﻟﮭﺎ ﻓﻲ ﺣﺎل إﻓﺮادھﺎ، وإﻧﻤﺎ ﯾ واﻟﺜﺎﻧﻲ اﻟﺴﯿﺎق اﻟﺤﺎﻟﻲ، وذﻟﻚ ُ ُ ﺑﺮﺑﻄﮭﻢ اﻟﺼﯿﺎﻏﺔ اﻟﻠﻐﻮﯾﺔ ﺑﺎ
... Show More1- That the Jewish minority, was considered one of Iraq`s 1864-1952 main religious minorities ,and has the therights by the Iraqi constitution approved by the Iraqi peopel in addition to the items all ocated py the minorities includiny the Jewish minority .He also bledged formaly before the Nations council to get its independence and to respect the rights of minorities . 2- The Jews who have completed primary education in Jweish and government schools Increased the number so that it seemed that the percentage of illiterate males was zero and the female was not high and as aresult of the increasing number of primary school graduates, so it was need to open addition secondary schools, also increased the number of high school graduates from
... Show MoreThis research aims to study and reveal the influence of Bauhaus principles in contemporary graphic design. The researcher determined the objective/spatial/temporal limit: Study of the Bauhaus influence in the design of the graphic poster in Germany in 2020. The theoretical framework in the first section dealt with (the emergence and factors of the emergence of the Bauhaus school and its characteristics), while the second topic dealt with (the intellectual, functional and aesthetic data of the Bauhaus School), after which the indicators that resulted from the theoretical framework were produced.
He mentioned four previous studies, one of them was discussed in detail. In the third chapter he defined the methodology, society, and sam
... Show MoreDust storms are typical in arid and semi-arid regions such as the Middle East; the frequency and severity of dust storms have grown dramatically in Iraq in recent years. This paper identifies the dust storm sources in Iraq using remotely sensed data from Meteosat-spinning enhanced visible and infrared imager (SEVIRI) bands. Extracted combined satellite images and simulated frontal dust storm trajectories, using the Hybrid Single Particle Lagrangian Integrated Trajectory (HYSPLIT) model, are used to identify the most influential sources in the Middle East and Iraq. Out of 132 dust storms in Iraq during 2020–2023, the most frequent occurred in the spring and summer. A dust source frequency percentage map (DSFPM) is generated using ArcGIS so
... Show MoreTHE EFFECT OF SPREACL of KNOWLEDGE ON ETHICS