In this work the strain energy of tetrahedrane and its nitrogen substituted molecules were calculated by isodesmic reaction method according to DFT quantum chemical fashion, the used basis set was 6-31G/B3-LYP, in addition all structures were optimized by RM1 semi-empirical method. From the obtained data we estimate an empirical equation connect between strain energy of the molecule with charge functions represented by dipole moment of the molecule plus accumulated charge density involved within the tetrahedron frame plus the number of nitrogen atoms. The results indicate the charge spreading factors by polarization and processes are the most important factors in decreasing the strain energy.

المستخلص:

          في هذا البحث , استعملنا طرائق مختلفة لتقدير معلمة القياس للتوزيع الاسي كمقدر الإمكان الأعظم ومقدر العزوم ومقدر بيز في ستة أنواع مختلفة عندما يكون التوزيع الأولي لمعلمة القياس : توزيع لافي  (Levy) وتوزيع كامبل من النوع الثاني وتوزيع معكوس مربع كاي وتوزيع معكوس كاما وتوزيع غير الملائم (Improper) وتوزيع

          Using sodium4-((4,5-diphenyl-imidazol-2-yl)diazenyl)-3-hydroxynaphthalene-1-sulfonate (SDPIHN) as a chromogenic reagent in presence of non-ionic surfactant (Triton x-100) to estimate the chromium(III)  ion if the wavelength of this reagent 463 nm to form a dark greenish-brown complex in wavelength 586 nm at pH=10,the complex was stable for longer than 24 hours. Beer's low, molar absorptivity 0.244×10⁴L.mol^-1.cm^-1, and Sandal's sensitivity 0.021 µg/cm² are all observed in the concentration range 1-11 µg/mL. The limits of detection (LOD) and limit of quantification (LOQ), respectively, were 0.117 µg/mL and 0.385µg/mL. (mole ratio technique, job's method) were employed to

Objectives: The study aimed to clarify the role of Al-Sayyid Al-Ajall and his family in the service of the Mongol Empire. They worked to develop its administrative and military institutions, benefiting from their extensive experience in administration, politics, economics, and urban affairs. Due to their capabilities, they received the patronage of Genghis Khan and subsequent generations, earning the confidence of the ruling Mongol authority. As a result, they were granted significant powers within the state.       Methods: The study relied on the analytical method to analyze historical texts, compare them with others, and discuss them accurately. Results: The study yielded several results, including the minister's keen interes

نحو تعزيز المشاركة السياسية للطالبات الجامعيات الفلسطينيات

Focused research problem that every work of any kind or size has signs indicating it and reveal the nature of either positive aims to achieve the objectives of the organization or a negative intersects with and contrasts with the context and style is the of work, as much as we care to fulfill the positive initiatives and seek to activate it and it to expect of them development of work and approach of the target by most direct route, we should take care also and just the sane, if not larger by indicators and negative actions because it is the way and means to detect imbalances cases that prevent achieving the desired objectives, or cause waste of money, effort, time, and therefore dispersion energies, efforts and wasted resources wit

The research targets exploring the designs of the kindergartens’ libraries in Baghdad for the perspective of the teachers as well as possible methods of improvements, considering the importance of this type of furniture for the child and its vital role in getting the child into the habit of reading and browsing, since the kindergarten library is the first of its kind that the child encounters in his life, if the relationship between the child and the library is of a positive type the experience with both printed and non-printed materials will be joyful and this type of relationship continues and strengthen with all other types of libraries over time. To achieve the goals of the research, the researcher prepared a focused survey sheet t

During the kingdom period between 1925-1958 fifty two member of parliament were elected representingHilla governorate. Only twenty nine of them were from Hilla that cause of choosing a member was according to qualifications of that era to play vole in Iraqi policy. Some of house qualifications related to tribes or privately of family. Other important causes of choosing a member depended on relationship to political parfait or holding scientific degree, in addition some members filled positions in the government such as being previous minster which gave him special distinction to be chosen as amember. Some other were members of the senate, here we should refer to the article no,63 of Iraqi constitution which imposes that any minister

This study comes as: The responsibility of the Iraqi newspapers in promoting  the political culture inside society, an analytical study in newspapers: Al-Sabah, Al-Ittihad, Al-Aalam for 2/ 3/ 2013 to 31/ 3/ 2013 to spot light on the extent to which the three mentioned newspapers are compliance with the promotion  of the political culture inside society which is seen as one of the essential requirements for the success and promotion of the democratic process inside society.

The study aims to: finding out the extent to which these newspapers are compliance with their responsibility in the promoting the political culture inside society; knowing the nature of their role in pr

Propaganda speech in the Gulf press articles about the Qatari crisis, an analytical study in the political articles published in the newspapers (Riyadh) Saudi Arabia and (Al-Ittihad) UAE from 5/6/2017 to 5/9/2017, University of Baghdad, College of Media, Press Department, 2019. The problem of the research was to monitor the contents of propaganda messages to Saudi Arabia and the UAE regarding the Qatari crisis, especially with the escalation of propaganda media campaigns between the four boycotting countries on the one hand and Qatar on the other hand, in light of crises and conflicts in the Gulf region and the Arab region in general. The researcher used the survey method to answer the research questions and achieve its results. This res