In the present work the clathrate hydrate dissociation enthalpies of refrigerant R134a+ water system, and R134a + water + salt system were determined. The heat of dissociation of three types of aqueous salts solutions of NaCl, KBr and NaF at three concentrations (0.09, 0.17and 0.26) mol·kg−1 for each salt type, were enthalpy measured. The Clapeyron equation was used tocalculate heat of dissociation of experimental data for binary and ternary system.In order to find the effect of compressibility factor on heat dissociation enthalpy, the study was conducted by using equation of state proposed by Peng and Robinson Stryjek-Vera (PRSV). The obtained results of dissociation enthalpy for binary system were (143.8) kJ.mol-1 without gas compressibility factor (z) and (136.08) kJ.mol-1 with z where the variation between two values was (5.3%). For ternary system (R134a+ water +NaCl) at three concentrations of this salt, the calculated values were in the range of (146.7 - 154.1) kJ.mol-1without z and (138.02-145.14) kJ.mol-1with z where the variation rang between two values was (5.8-5.7) %. The other two types of salts given similar results within (0.886 - 0.129) % deviation rang about NaCl results without z and (0.818-0.149) % deviation rang with z values.
في العقود الملزمة للجانبين اذا لم ينفذ احد المتعاقدين التزامه تنفيذا كليا فانه يجوز للمتعاقد الاخر ان يطلب من المحكمة فسخ العقد فسخا كليا ، الا انه قد يقتصر عدم التنفيذ على جزء من التزامه فعندئذ يثار التساؤل الاتي: هل يمكن فسخ العقد فسخا جزئيا ؟ الملاحظ ان هنالك خلافا فقهيا وقضائيا كبيرا حول جواز الفسخ الجزئي ، فالبعض يجيز الحكم بالفسخ الجزئي ، والبعض الاخر لا يجيز الحكم بالفسخ الجزئي، وقد انتهينا الى القول بع
... Show MorePraisebe to God, Lord of the worlds, and blessings and peace be upon the most honorable messengers, our Prophet Muhammad, may God bless him and granthim peace. And after
المنظمات الدولية دراسة في منهجها وطبيعة فهمها
Prophecy, the Jews had another concept, does not limit to choosen from God, but expands to include all of the claims to prophethood of priests and magicians and liars, The word prophet in the eyes of the Jews view has abroad meaning, That included the prophets who were chosen by God to his message, in order to repair case Also those, who were of magicians, astrologer & hypocrites
لظهور كثير من الاراء التفسيرية والنقدية والتي تباينت في كثير من الاحيان وبخاصة من المفسرين والمستشرقين لاختلاف المشارب الفكرية لكلا الفريقين وهو ما تطلب تاصيلا لعملية النقد والمقارنة بين المنهجين
This research deals with the study and investigation of the diwan Al_sheikh (Abu Baker Bin Fityan Al_ Arawdaky) dead 672H) . He is one of the Sufism who was born in (Damascus) and lived there all of his life . this biography is limited and his works would not be found except this diwan which oppears on three copies that can be taken from mannscrpt kept in different libraries .
We thought to investigate this diwan in many de partments , but the best one had been chosen according to its completion .
This diwan is special in letters that can be ordered alphabetically , re ferences contain explanation in addition to mention many words and phrase
The historical documentation of the architectural archeology has a fundamental and great importance in evaluating the architectural product that has suffered from neglect
Background: The COVID-19 pandemic has an immense effect not only on the social and economic lives of people but also on the surgical lives of surgeons, residents, nursing staff, and patients as well as ground level staff. Amidst this COVID pandemic, emergency surgeries were being done but at a decreased rate, whereas elective cases depended on the will of hospitals, surgeons, and patients. Study aims to promulgate a "Neo–Surgical Check Box" by amalgamating the WHO surgical checklist and the results obtained from the questionnaires.
Subjects and Methods: After receiving ethical clearance from the Institute Ethical Committee, an online questionnaire with 50 questions divided into
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This study aims to identify the level of emotional intelligence among principals of basic education schools in Al-Dakhiliya Governorate. The descriptive approach was used. A questionnaire of two parts was utilized; its second part included (27) items divided into five dimensions related to emotional intelligence. The study sample consisted of (337) teachers representing 52% of the study sample were randomly selected. The study result showed that level of the emotional intelligence is high and the motivation dimension is the highest. There were no statistical differences at the level (α≤ 0.05) due to the impact of (the social type, the educational qualification, and the years of experience) in all the
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