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هدفت الدراسة بشكل رئيس إِلى بيان تأثير نظام معالجة المعاملات بأبعاده (الأفراد، الأجهزة، البرمجيات، البيانات) في تحسين الكفاءة التشغيلية إحدى أبعاد الأداء التشغيلي في سوق الهال في محافظة اللَّاذقيَّة. قام الباحث بالاعتماد على المنهج الوصفي التحليلي لتوصيف متغيِّرات الدِّراسة وتحليلها اعتماداً على البيانات الأَولية الَّتي تم جمعها من خلال القيام بدراسةٍ ميدانية في سوق الهال في اللاذقية، وذلك بالاعتماد على استبانة تم تصميمها من خلال اطِّلاع الباحث على الدِّراسات والأَدبيَّات السَّابقة، ومن أَجل اختبار الفرضيَّات قام الباحث بتفريغ البيانات الأَوليَّة في قاعدة بيانات تم تحليلَها باستخدام برنامج SPSSإِصدار /21/. توصلت الدراسة إلى وجود علاقة معنوية بين نظم معالجة المعاملات وتحسين الكفاءة التشغيلية إحدى أبعاد الأداء التشغيلي في سوق الهال في اللاذقية؛ حيث بلغت قيمة معامل الارتباط بيرسون 0.648 وهو يدلّ على ارتباط مقبول بين نظم معالجة المعاملات والكفاءة التشغيلية. أوصت الدراسة بضرورة الاهتمام بنظم معالجة المعاملات من خلال الاهتمام بمكوناته (الأفراد، الأجهزة، البرمجيات، البيانات) نظراً لدورها المهم في تحسين الكفاءة التشغيلية.

هدفت هذه الدراسة التعرف الى اتجاهات طلبة كلية التربية الرياضية نحو ممارسة بعض الالعاب الرياضية في جامعة اليرموك، واستخدم الباحثين المنهج الوصفي لملائمته لطبيعة وأهداف الدراسة، وبعد اطلاع الباحثين على الادب النظري والدراسات السابقة ذات الصلة بموضوع الدراسة الحالي قام الباحثين بالتعديل والتطوير على اداة دراسة كل من دراسة الزحراوي(2018) ودراسة الزعبي(2017) ودراسة ابو عنزة وشمروخ(2011)، وتكون مجتمع الدراسة الحالي من طلبة كلية التربية الرياضية في جامعة اليرموك المسجلين لمساق كرة القدم والعاب القوى والبالغ عددهم (1022) طالب وطالبة في حين بلغت عينة الدراسة (237) طالب وطالبة، ولمعالجة البينات احصائيا قام الباحثين باستخدام برنامج التحليل الاحصائي spss من خلال استخدام عدة عمليات حسابية (المتوسطات الحسابية، الانحرافات المعيارية، كرون باخ الفا، اختبار ت، اختبار تحليل التباين الاحادي)، واظهرت النتائج ان اتجاهات طلبة كلية التربية الرياضية نحو ممارسة بعض الالعاب الرياضية كانت بدرجة مرتفعة، كما وأظهرت النتائج انه توجد هناك فروق دالة احصائيا تبعا لمتغير الجنس في المحور النفسي ولصالح الاناث في حين أظهرت النتائج وجود فروق تبعا لمتغير اللعبة في محور (التفوق الرياضية، النفسي، الجمال والتعبير) ولصالح لعبة كرة القدم كما واظهرت النتائج فروق دالة احصائيا تبعا لمتغير السنة في محور ( الصحة واللياقة البدنية) لصالح السنة الرابعة، ومحور(التفوق الرياضي) ولصالح السنة الاولى، ومحور(الجمال والتعبير) ولصالح السنة الاولى والثانية، ويوصي الباحثين استثمار اتجاهات الطلبة الايجابية لنشر الوعي والاهتمام بالرياضات الاخرى وحثهم على ممارستها.

هشاشة العظام هو مرض جهازي يتأثر به ملايين الناس على مستوى العالم. يؤثر المرض في الغالب على الإناث بعد انقطاع الطمث ويرتبط ارتباطًا وثيقًا بالشيخوخة. ناقشت العديد من الدراسات احتمالية حدوث فشل مبكر للغرسات السنية عند هؤلاء المرضى. هدفت هذه الدراسة لتحري تأثير كثافة العظم العامة على ثبات الغرسات السنية. شملت عينة البحث مجموعتين: مجموعة الدراسة وتكونت من 9 مرضى هشاشة عظام مشخص وفق مقياس ال T-Score حيث قيمة T-Score عندهم أصغر أو تساوي -2,5 بأعمار 45-58 سنة, وتكونت المجموعة الشاهدة من 9 أفرد سليمين بأعمار 48-57 سنة, تم إنزال 18 غرسة سنية عند كلا المجموعتين وإجراء قياس ثبات الغرسات باستخدام تقنية تحليل تردد الرنين (RFA) بعد الغرس مباشرة وبعد تركيب الدعامات (بعد ثلاثة أشهر من الغرس). أظهرت النتائج وجود فروق ذات دلالة إحصائية في قيم ثبات الغرسات السنية بين مجموعة مرضى هشاشة العظام والمجموعة الشاهدة حيث أن القيم المنخفضة للثبات عند مجموعة مرضى هشاشة العظام تـؤشر بأن ثبات الغرسات السنية يتأثر بكثافة العظم الهيكلية عند المريض.

هدفت هذه الدراسة التعرف الى درجة ممارسة مشرفي التربية الرياضية للسلوك الاشرافي التشاركي وعلاقته بتحسين اداء المعلمين من وجهة نظر معلمي التربية الرياضية ، حيث قام الباحث باستخدام المنهج الوصفي لملائمته لطبيعة وأهداف الدراسة، حيث تكونت عينة الدراسة من(241) معلمي التربية الرياضية في محافظة اربد، بغرض اعداد اداة الدراسة قام الباحث وبعد مراجعته للأدب النظري والدراسات السابقة بالتعديل والتطوير على دراسة الهاجري وحراحشة،(2016) ودراسة الدجاني،(2013) ودراسة البلوي،(2008) ودراسة الافندي،(2011) ودراسة حمد،(2014) بما يتلائم مع طبيعة واهداف الدراسة الحالية حيث تكونت اداة الدراسة بصورتها النهائية من (7) محاور وهي(النمو المهني، التخطيط لتحسين الاداء، التقويم، تحليل المنهاج، السلوكات، المهارات، الاداء التعليمي) و (35) فقرة واجراء معاملات الصدق والثبات لها، وتوصلت نتائج الدراسة الى ان درجة ممارسة المشرفين للسلوك الاشرافي التشاركي كانت بدرجة متوسطة بينما اظهرت النتائج ان مستوى تحسين اداء المعلمين كان مرتفعا، اما فيما يتعلق بالعلاقة بين درجة الممارسة للسلوك الاشرافي التشاركي وتحسين اداء المعلمين فكانت ايجابية، ويوصي الباحث بعقد الدورات التدريبية وورش عمل وبرامج تأهيل خاصة بمشرفي التربية الرياضية تدور موضوعاتها حول مفهوم الاشراف التشاركي وكيفية تفعيله وتوظيفه في ميدان التربية الرياضية بغية الارتقاء بممارسة المشرفين للسلوك الاشرافي التشاركي

Aims: This study aims to assess the apical microleakage of root canals after irrigation by NaOCl, EDTA, and MTAD. Materials and methods: 36 lower premolars were used in this study. Preparation of the samples was done by files of ProTaper to size F3. Samples were distributed into three experimenting groups; each one contained ten samples as follows: Group 1- samples were finally washed for five minutes with five ml of 5.25% NaOCl. Group 2- samples were finally washed for five minutes with five ml of 17% EDTA. Group 3- samples were finally washed for five minutes with five ml of MTAD. Six samples were utilized as positive and negative control groups, each one contained three samples. The samples were obturated by single cone technique except for the samples of the positive control group, which were not obturated. All the samples were incubated at 37 OC for 7 days in 100% humidity. The dye penetration method was used to assess apical leakage. Finally, data was collected and statistically analyzed. Results: MTAD group revealed the least leakage supervened by the EDTA group and the NaOCl group revealed the highest leakage. The MTAD group did not differ significantly from the EDTA group, while the NaOCl group differed significantly from MTAD and EDTA groups. A group of positive control revealed a dye leak through the whole length of the root, while a group of negative control did not reveal any dye leak. Conclusions: Under the conditions of this study, the final irrigation with MTAD or EDTA is better than the final irrigation with 5.25 % NaOCl in terms of less apical microleakage.

The study aimed to: - Detecting the significance of the statistical differences in lactate level in blood and performance in the 400-meter sprint between the pre and post tests after using the method of (speed escalation and distance stabilization) According to a Computerized Running Training programs for interval training . - Detecting the significance of the statistical differences in lactate level in blood and performance in the 400-meter sprint between the pre and post tests after using the method of (distance escalation and speed stabilization) According to a Computerized Running Training programs for interval training . - Recognize the significance of the statistical differences in lactate level in blood and performance in a 400-meter sprint between the two methods (speed escalation and distance stabilization) and (distance escalation and speed stabilization) According to a Computerized Running Training programs for interval training in the post-test . The researchers used the experimental approach for its convenience to the study nature, and the research experiment was carried out on a sample of short distance runners (junior category) at the Specialized School of Athletics in Nineveh Governorate for the sports season (2019-2020) and they were (12) runners, and this sample was divided into two experimental groups through using the randomization method with (6) runners for each group, The first depends on interval training in the method of (speed escalation and distance stabilization) and the second depends on interval training in the method of (distance escalation and speed stabilization) by relying on a programmed system for the sprint in interval training . The researchers reached the following conclusions: - Interval training in the method of (speed escalation and distance stabilization) and Interval training in the method of (distance escalation and speed stabilization) made positive progress in lactate level in blood and performance in the 400-meter sprint . - Despite the positive effect of interval training in the two methods (speed escalation and distance stabilization) and (distance escalation and speed stabilization) there was a relative superiority of interval training in the method of (speed escalation and distance stabilization) in the special endurance consisting of (speed endurance and strength endurance) and performance in Sprint 400 meters . The researchers recommended a set of recommendations, the most important of which are : - The use of interval training in the method of (speed escalation and distance stabilization) and not being satisfied with the use of interval training in the method (distance escalating and speed stabilization) when training a 400-meter sprint because of its importance in developing the performance in the 400-meter sprint, as well as its creation For functional adaptation in relation to blood lactate level after improvement in performance. - measuring the level of lactate in the blood in the training of runners from time to time, as a functional indicator that helps in detecting the level of training status and identifying the adaptation and recovery of runners, in order to evaluate the training process. - The possibility of relying on the Computerized Running Training programs for interval training in designing interval training methods and curricula for all short-distance runners, including 400-meter sprinting for all levels and age groups .

المقدمة :الاختلاف في البنى الداعمة للزرعات عن الأسنان الطبيعية تجعلها أكثر تأثرا بالعوامل الالتهابية عند تجمع اللويحة حولها مقارنة بالأسنان الطبيعية ,لذلك يجب التأكيد على العناية الدائمة بالصحة الفموية لإطالة عمر الزرعة وتجنب المشاكل الوظيفية والتجميلية المرافقة للتعويض . المواد والطرق: تم تقييم الصحة الفموية للمرضى وفق مشعر الصحة الفموية المبسط ومشعر تقييم حالة المخاطية حول الزرعات ,تم اختيار عينة من 100 مريض مراجعين لكلية طب الأسنان جامعة تشرين في اللاذقية بشرط مرور عام على الأقل على إجراء عملية الزرع السني ,تم إجراء البحث على مدى 8 أشهر. النتائج: بلغ متوسط قيمة OHI-S لدى العينة 2.11 وهي تشير الى صحة فموية متوسطة, متوسط قيمة مشعر حالة النسج المخاطية الحفافية حول الغرسات السنية بلغ 1.21 . لدراسة علاقة الارتباط بين مشعر الصحة الفموية المبسط و مشعر تقييم حالة النسج المخاطية الحفافية حول الزرعات تم استخدام اختبار مربع كاي , وجدنا أن قيمة مستوى الدلالة للاختبار هي 0.000 وهي أصغر من القيمة 0.05 وبالتالي توجد علاقة ارتباط بين مستوى الصحة الفموية وحالة النسج المخاطية الحفافية حول الغرسات. الخلاصة: بعد التحقق من الإندماج العظمي للزرعات واستكمال عملية التعويض تصبح عناية المريض المنزلية بالإضافة للعناية الدورية عند الطبيب عاملين حاسمين ومؤثرين بشدة لإطالة عمر الزرعة ونجاح عملية التعويض .

لتشخيص الإصابة بهشاشة العظام عند المتقدمين بالعمر باستخدام التصوير المقطعي المحوسب ذو الحزمة المخروطية CBCT. شملت عينة البحث مجموعتين: مجموعة الدراسة وتكونت من (10) مرضى هشاشة عظام مشخص وفق مقياس ال T-Score حيث قيمة T-Score عندهم أصغر أو تساوي -2,5 بأعمار 45-61 سنة, وتكونت المجموعة الشاهدة من (12) فرد سليم بأعمار 48-60 سنة حيث قيمة T-Score عندهم أكبر أو يساوي -1. تم تقييم كل من المتغيرات التالية: المؤشر الذقني MI والذي يمثل عرض الصفيحة القشرية للفك السفلي أسفل الثقبة الذقنية, مشعر CI والذي يمثل شكل الصفيحة القاعدية القشرية للفك السفلي على صورة ال CBCT عند كلا المجموعتين. أظهرت النتائج وجود فروق ذات دلالة إحصائية في قيم MI و CI بين مجموعة مرضى هشاشة العظام والمجموعة الشاهدة أي أن هنالك علاقة ارتباط بين قيم MI و CI وكثافة معادن العمود الفقري القطني.

Due to deleterious impacts of broomrapes against the host plants, its combating is ‎essential for sustaining crop productivity. Thus, two–year field trail was conducted at ‎El Nubaria experimental farm, National Research Centre, Egypt, on two faba bean ‎genotypes (Misr–3 and Sakha–1) to investigate the importance of butyl–iso–butyl ‎phthalate as an activator for broomrape germination in comparison to glyphosate and ‎unweeded. Findings revealed that glyphosate in 2015/16 and 2016/17 seasons in ‎addition to butyl–iso–butyl phthalate in 2016/17 season caused significant reductions ‎in broomrape biomass and numbers of broomrape–infected faba bean plants plot−1 ‎compared to the unweeded. Plots of Misr–3 genotype treated with butyl–iso–butyl ‎phthalate in both season as well as plots of Misr–3 or Sakha–1 sprayed by glyphosate ‎in the first season achieved the maximum seed yield of faba bean. Since butyl–iso–‎butyl phthalate exhibits suicidal germination of broomrape seeds, it can be exploited ‎as an effective and helpful tool in integrated management programs of broomrape in ‎faba bean fields. ‎ Due to deleterious impacts of broomrapes against the host plants, its combating is ‎essential for sustaining crop productivity. Thus, two–year field trail was conducted on ‎two faba bean genotypes (Misr–3 and Sakha–1) to investigate the importance of ‎butyl–iso–butyl phthalate as an activator for broomrape germination in comparison to ‎glyphosate and unweeded. The trail design was a strip–plot in completely randomized ‎block design in six replications. Genotypes occupied the vertical main plots as well as ‎broomrape control treatments distributed in horizontal ones. Results showed that ‎broomrape biomass and numbers of broomrape–infected faba bean plants plot−1 ‎markedly responded to weed control and genotype and their interaction in both ‎seasons, except numbers of broomrape–infected plants of faba bean genotypes plot−1 ‎in 2016/17 season. Also, findings revealed that glyphosate in 2015/16 and 2016/17 ‎seasons in addition to butyl–iso–butyl phthalate in 2016/17 season caused significant ‎reductions in broomrape biomass and numbers of broomrape–infected faba bean ‎plants plot−1 compared to the unweeded. In plots of Misr–3 or Sakha–1, glyphosate ‎was the potent practice for reducing broomrape biomass and numbers of broomrape–‎infected faba bean plants plot−1 in 2015/16 and 2016/17 seasons, with no significant ‎differences with butyl–iso–butyl phthalate application in 2016/17 season. There were ‎no noticeable variations between weeded practices and genotypes and their interaction ‎on total dry weight of faba bean plants estimated at 105 DAS, in both seasons, except ‎glyphosate x Misr–3 interaction in the first season only. Plots of Misr–3 genotype ‎treated by butyl–iso–butyl phthalate in both season as well as plots of Misr–3 or ‎Sakha–1 sprayed by glyphosate in the first season achieved the maximum seed yield ‎of faba bean. Since butyl–iso–butyl phthalate causing suicidal germination of ‎broomrapes seeds, it can be exploited as an effective and helpful tool in broomrape ‎management programs in faba bean fields. Genotype; Orobanche spp; Parasitic ‎weeds; Suicidal germination; Vicia faba ‎

يعتبر التخطيط الإقليمي في الوقت الراهن أحد ركائز الدولة ومقياساً لتطورها، وذلك لأن التخطيط يعمل على إظهار المشاكل الحالية أو المستقبلية ويضع الحلول المناسبة لها، ومما لاشك فيه أن السكان هم الهدف الرئيسي من أي عملية تخطيط، وذلك بتأمين مختلف متطلبات الحياة للأعداد المتزايدة منهم عاماً بعد عام، وبالتالي فإن إيجاد المسكن الملائم يعد من أولى الخطوات في عملية التخطيط. تعد مشكلة النمو السكاني من أبرز المشاكل التي تعاني منها الدول في الوقت الراهن ويظهر هذا جلياً في مراكز المدن والذي ينتج عنه مشاكل عديدة كالسكن العشوائي مثلاً. قمنا في هذا البحث بدراسة مكانية لتحديد الموقع الأفضل لإنشاء مدينة جديدة، وذلك لاحتواء الأعداد المتزايدة من السكان ضمن محافظة اللاذقية التابعة للجمهورية العربية السورية، بالإضافة إلى إجراء دراسة سكانية لتحديد الزيادة المستقبلية في عدد السكان. وقد أثبتت تقنيات نظم المعلومات الجغرافية (GIS) كفاءتها في إدارة البيانات المكانية والوصفية وتحليلها، لذا تم الاعتماد عليها للقيام بتحديد الأماكن الملائمة للتوسّع العمراني وفق مجموعة من المعايير التي تم تجميعها من مجموعة من الأبحاث والتي تؤثر في عملية اختيار هذه المناطق، وذلك عن طريق أدوات التحليل المكاني الموجودة ضمن برامج الــ (GIS)، للوصول إلى المناطق الملائمة للتوسّع لاستيعاب النمو السكاني المفترض.

One of the main objectives of Naif Arab University for Security Sciences (NAUSS) is to enhance peace, security, and justice in Arab societies through education, research, and advanced professional training in various disciplines of security and forensic sciences. NAUSS strives to improve the academic and professional skills of forensic scientists and security personnel to combat crime and terrorism by utilizing all the available tools of modern technology. NAUSS also realizes the importance of scientific research in the social, economic, and technological development of a society and is, therefore, committed to encouraging and supporting research at every level. NAUSS has given the fields of forensic sciences and forensic medicine a top priority and the attention they deserve. In pursuit of its objectives, and in cooperation with other Arab member organizations, NAUSS launched the Arab Society for Forensic Sciences and Forensic Medicine (ASFSFM) in 2013. The Society had the honour of being officially launched by His Royal Highness, Prince Mohammed bin Naif bin Abdul Aziz, Crown Prince, Deputy Prime Minister and the Minister of the Interior, Honorary President of the Council of Arab Ministers of Interior and Chairman of the Supreme Council of NAUSS. The 2nd Arab Forensic Science & Forensic Medicine Meeting (ASFSFM Meeting 2016) was yet another part of the efforts and concern of NAUSS to advance the skills and knowledge of Arab specialists and to facilitate cooperation among forensic scientists and institutions engaged in the practice, education and research of forensic sciences and forensic medicine at various levels.

The Arab Society for Forensic Sciences and Forensic Medicine (ASFSFM) at Naif Arab University for Security Sciences seeks to present the latest developments in all fields of forensic sciences through holding specialized scientific events and academic activities. This is also achieved through its periodic scientific peer-reviewed journal, the Arab Journal of Forensic Sciences and Forensic Medicine. It also seeks to promote scientific research in all fields of forensic science and forensic medicine, and seeks actively to contribute in holding scientific meetings in accordance with advanced scientific standards, including the 3rd International Arab Forensic Sciences & Forensic Medicine Conference. This important event was attended by scientists and experts from various fields of criminal and forensic sciences from both Arab and non-Arab countries. This conference was a significant scientific accomplishment that contributed to the advancement of forensic sciences and forensic medicine in the Arab world. The conference aimed, in accordance with the vision of Naif Arab University for Security Sciences, to enhance peace, security and justice in Arab societies. Naif Arab University for Security Sciences, represented by the Arab Society for Forensic Sciences and Forensic Medicine, held the 3rd International Arab Forensic Sciences & Forensic Medicine Conference on the University's campus during the period from 21st to 23rd November 2017. The event included the participation of more than 720 experts in forensic sciences and forensic medicine from 33 countries all over the world. Experts discussed and presented the latest developments in their fields. The conference provided a creative environment for students from both local and international universities to benefit from experts and specialists, and to access the most recent research. On behalf of His Excellency the president of Naif Arab University for Security Sciences, and the Arab Society for Forensic Sciences and Forensic Medicine, we would like to pay tribute to all scientists and experts who contributed by sharing their scientific researches through lectures, workshops, and posters within this event. We appreciate their contributions that added great value to the subject of the conference.

The Arab Society for Forensic Sciences and Forensic Medicine (ASFSFM) at Naif Arab University for Security Sciences seeks to present the latest developments in all fields of forensic sciences through holding specialized scientific events and academic activities. This is also achieved through its periodic scientific peer-reviewed journal, the Arab Journal of Forensic Sciences and Forensic Medicine. It also seeks to promote scientific research in all fields of forensic science and forensic medicine, and seeks actively to contribute in holding scientific meetings in accordance with advanced scientific standards, including the 3rd International Arab Forensic Sciences & Forensic Medicine Conference. This important event was attended by scientists and experts from various fields of criminal and forensic sciences from both Arab and non-Arab countries. This conference was a significant scientific accomplishment that contributed to the advancement of forensic sciences and forensic medicine in the Arab world. The conference aimed, in accordance with the vision of Naif Arab University for Security Sciences, to enhance peace, security and justice in Arab societies. Naif Arab University for Security Sciences, represented by the Arab Society for Forensic Sciences and Forensic Medicine, held the 3rd International Arab Forensic Sciences & Forensic Medicine Conference on the University's campus during the period from 21st to 23rd November 2017. The event included the participation of more than 720 experts in forensic sciences and forensic medicine from 33 countries all over the world. Experts discussed and presented the latest developments in their fields. The conference provided a creative environment for students from both local and international universities to benefit from experts and specialists, and to access the most recent research. On behalf of His Excellency the president of Naif Arab University for Security Sciences, and the Arab Society for Forensic Sciences and Forensic Medicine, we would like to pay tribute to all scientists and experts who contributed by sharing their scientific researches through lectures, workshops, and posters within this event. We appreciate their contributions that added great value to the subject of the conference.

Aims: The aim of present study is to assess the apical seal of root canals prepare by two different preparation techniques (Rotary and reciprocating technique) . Materials and Methods: Forty extracted human, single-rooted lower premolar teeth were decoronated at the cement-enamel junction (CEJ). The working length was determined for each tooth. The samples were divided into 2 experimental groups, each one consisted of 20 prepared teeth: group 1, rotary conventional preparation by using Wave-One file. group2, reciprocate instrumentation with Wave-One file. After instrumentation was completed then the teeth obturated with Single-cone technique related to this systems. Zinc oxide euginol (ZOE) sealer was used as a root canal sealer in this study. A dye penetration method was used to evaluate the apical seal and the teeth were cleared then apical leakage was measured using a stereomicroscope at (x10 magnification). The statistical analysis performed by Independent t-test. Results: Wave-One file instrumented by Reciprocation instrumentation technique was significantly differ from Rotary instrumentation technique for root canal preparation . The Reciprocation group registered better apical seal than Rotary group. Conclusions: Apical seal with the Wave-One Reciprocation technique and conventional Wave-One rotary approach were significantly difference. The Wave-One Reciprocation technique was markedly registered better apical seal than Wave-One rotary technique.

In this paper, we have studied the Normalized Cut algorithm to segment the medical images that was widely used in the last decade. And we based on Image in contourlet domain that supports rich information in Low _ Low frequency. And a clear edges in High_ High frequency. As motion above, we can replace the algorithm filters by the high frequency contourlet coefficient, and then the edges will be projected on the original image to obtain a segment to be studied independently. When the proposed algorithm applied on the medical images after exchanging the previous filter by the contourlet coefficients, Adopted in additionto extract the properties of the selected segment to be recognized by human eyes.

The aim of this paper to found that the stability and bifurcation of Chen System by using a new method which called - discriminate method as will as we found the stability at the second critical point by another method, and we showed that the new method depended on the roots to determent the stability and bifurcation of this system while the previous methods depended on the parameters , also we showed the method which used to find the stability at the second critical point depended on the critical value and parameter . Finally, we get the same previous results but easily method.

ABSTRACT The study was conducted to reveal the effect of oral administration of aluminium chloride on spermatogenesis and accessory sex organs in adult male rats. Aluminium chloride was administrated by oral intubation daily with two doses 40 and 80 mg/kg. body weight for periods 30 and 60 days for each. The results showed that aluminium chloride at both doses caused a significant reduction in sperm counts and the percentage of live sperm, with a significant increased in the percentage of morphologically abnormal sperm, and a significant reduction in averages of body weights, head epididymis, testis and prostate gland weights in rats treated with aluminium chloride at dose 80 mg/kg. body weight during the experimental period. While aluminium chloride at dose 40 mg/kg. body weight had no changes in the percentage of the morphologically abnormal sperm and in the body weight, testis and accessory reproductive organs weights. Synchronized with the physiological changes, histological alterations represented by vascular hyperemia, interstitial edema, multiplication of Leydig cells, coagulative necrosis, hyperplasia and sloughing of seminiferous tubular epithelium. The results concluded that administration of aluminium chloride to adult male rats would cause adverse effects on sexual efficiency.

This study aimed to identify the degree to which the requirements of elearning are available at the Ministry of Education and Higher Education in Palestine from the point of view of government school principals and directors. The researchers used the descriptive and analytical approach. 1. The degree of availability of e-learning requirements at the Ministry of Education and Higher Education in Palestine from the point of view of government school principals and principals was large and with relative weight (69.64%). 2. There are statistically significant differences at the level of significance (α≤0.05) between the average grades of the study sample to the degree of availability of elearning requirements at the Ministry of Education and Higher Education in Palestine from the point of view of government school principals and directors attributable to the two sex change (male, female), in favor Females, and for the years of service variant in favor of years of service (less than 5 years). There are no differences in the variable of training courses. [ABSTRACT FROM AUTHOR]

The study aims to examine the economic and social repercussions of the Corona crisis on the transport, tourism and hotel sector in Egypt, by reviewing and analyzing the macroeconomic situation in Egypt in terms of the components, potentials and reality of the Egyptian economy, the challenges facing, and the repercussions of the Corona pandemic on the transport, tourism and hotel sector, mechanisms and policies Which was taken by the Egyptian government to face this crisis in the economic sectors in general and the transport, tourism and hotel sectors in particular. The study found that although the economic sectors in Egypt in general, and the transport, tourism and hotel sectors in particular, have been affected by the Corona pandemic crisis, whether through measures to contain the virus or the sudden halt of economic activities, the Egyptian economy possesses the ingredients and capabilities to confront the crisis, and the economic reform that took place during the four Recent years, which enabled him to overcome that crisis . [ABSTRACT FROM AUTHOR]

The research is taking place in the astronomy of contemporary technical development, inherent in digital visual arts systems, and its implementation in accordance with the latest methods of modern technologies, and among those technologies, were the means of producing and preparing illustrative and graphic painting, according to the techniques of advanced digital programs, and adding new outputs to the world of broad, evolving and accelerating visual arts in steps Its growth... Here the need was urgent and necessary, to draw the attention of experts for the importance of this field, and the need to provide the techniques and requirements for their reform., And the visual fields and fields that he addressed and served, and the most prominent contemporary international artists, in addition to providing special artistic experiences by researchers, as a visual enhancement of his subject.. [ABSTRACT FROM AUTHOR]

Background and purpose: Nanosilver particles are associated with oxidative stress due to free radical production. Long-term use of antioxidant agents could result in harmful production of free radicals. This study assessed the protective and antioxidant effects of Peganumharmala L.onmalemicetreated with nanosilver particles. Materials and methods: In this study 32 male Albino mice (25-30gr) were divided into four groups; one control group and three intervention groups. The intervention groups included a group receiving 500 ppm nanosilver particles, a group fed 20 mg/kg/day by ethanolic extract of P.harmalafor 30 days, and a group which was given ethanolic extract of P.harmalaorally and the same dose of nanosilver particles. Onthreeconsecutive day sat the beginning of the experiment intraperitoneal injections of nanosilver were performed. Post-treatment blood samples were collectedfromthe hearts and the activity of serum catalase (CAT) and glutathioneperoxidase (GPx) I nredblood cell and concentration of serummalondialdehyde (MDA) were determined. Results: In the mice treated with nanosilver particles the MDA concentration significantly increased, while significant decreases were seen in GPx and CAT activities (P<0.001). However, P.harmalaextract reversed these effects i.e. it increased GPx and CAT activities and decreased the MDA level significantly (P<0.001). Conclusion: The ethanolic extract of P. harmalawith antioxidant properties is believed to decrease thefreeradicals produced by silvernanoparticles. [ABSTRACT FROM AUTHOR]

Boundary issues constitute one of a series of problems in the Arabian Gulf region. In addition, they reflect tensions in the area. Among these problems the Qatad-Bahraini dispute was a serious one. The root of this dispute goes back to the 19th century, that is when Great Britain had full control over the eastern part of the Arabian Peninsula. The dispute not only affected the relationship between the two countries, but also threatened the existence of the Gulf Cooperation Council. In 1986 the two countries were on the edge of having a war, but due to the great efforts of King Fahad of Saudi Arabia this war was avoided. Instead, they agreed to raise this dispute to the International Court of Justice. This paper focuses on the historical roots of the dispute over the following islands: Fisht Aldibel, Howar, Jaradah, Jinan, in addition to Al Zubara area and the maritime boundary. It also discusses the International Court of Justice which gave Bahrain the islands of Howar and Jaradah; and Qatar gained the sovereignty over Al Zubara, Jinan, and Fisht Aldibel. [ABSTRACT FROM AUTHOR]

In this paper, we obtained the nuclear energy levels for 48Cr isotope that resided in the pf -shell of shell model calculations. For nucleons that were outside closed and no core, they were calculated using skyrme interactions. The Skyrme (SLY5) was used as an efficient full-space two-body interaction, and the frozen orbitals and restricted occupations technique were adopted in the context of full-space calculation. All wave vectors and analyses are presented using the diagrammatic notation, while all representatives are given in Dirac notations. All the calculations are done with the help of the OXBASH code program and the results are compared with the available experimental data.

The present study was planned to evaluate the infection concerning Anaplasma platys in dogs for the first time in Nineveh Province, Iraq, using microscopic examination and conventional polymerase chain reaction (PCR) techniques. Eighty-one blood samples were randomly collected from dogs (31 household dogs and 50 stray dogs). Those samples were drained from dogs introduced to the Veterinary Teaching Hospital at the University of Mosul and private veterinary clinics in Nineveh province. The microscopic examination was used to check the blood films prepared for preliminary detection of morulae of A. platys within platelets; furthermore, the molecular technique was used to validate the presence of A. platys by targeting the gltA gene. In that, PCR yielded an amplification of 690 bp band size products, which was the expected size of the targeted gene. After that, these PCR amplicons were sent for sequencing to verify the presence of the pathogen, and then the sequence results were subsequently aligned with other strains available on the NCBI database. Finally, a phylogenetic tree for the related strains was constructed by Mega-11 software. The outcomes indicated that the overall infection rate of A. platys infection in dogs was 6/81 (7.4%) and 11/81 (13.6%) using microscopic examination and molecular techniques, respectively. Additionally, there was no significant difference within the dogs' categories in this study. In conclusion, it has been shown that A. platys in dogs were circulating in Nineveh province; therefore, plans for control measures are advised.

The research was planned to evaluate the ability of an omental pedicle flap with platelets-rich fibrin (PRF) to augment bladder defects in dogs. Eighteen adult- male dogs were used. After general anesthesia, a partial cystectomy with a circular shape with a diameter of 3cm. was performed on the dorsal surface of the bladder. Then, the animals (N=9) were divided into two equal groups. In the first group, the bladder defect was closed with a double layer of omentum. In contrast, in the second group, the defect was also reconstructed by a double layer of omentum with topical application of platelets-rich fibrin between both layers. The results were evaluated by studying the gross, cystography, and histopathological changes on 7, 15, and 30 days postoperatively. Monitoring of clinical signs with statistical histopathological scoring analysis was also studied. The clinical signs during the first-week post-operation were represented by loss of appetite, straining during urination, and hematuria. These signs disappeared after the first week of surgical repair, and all animals ultimately returned to their normal body status. The complete closure of the bladder defect represented the gross changes. The histopathological results represented the formation of granulation tissue, angiogenesis, and infiltration of polymorphonuclear and mononuclear inflammatory cells in both groups. The proliferation and maturation of granulation tissue were more in the second group, in addition to lower degree of inflammatory cell infiltration. The results of cystography revealed no sign of urine leakage. In conclusion, adding PRF to omentum can improve the healing of bladder defects in dogs.

Lower back pain is one of the problems facing all groups of society, especially the elderly, as the causes of pain revolve around many different factors. The research aims to use intense special exercises accompanied by intermittent electrical stimulation to get rid of lower back pain among professors of the College of Science at the University of Baghdad for ages 50–60 and identify its effect. The research assumes that there are statistically significant differences in the degree of pain before and after the therapeutic approaches. The research sample consisted of professors who suffer from constant pain, numbering (6). The researchers used the experimental method to design one experimental group with a pre- and post-test to suit the research problem. They also used the SPSS program to process the research data statistically. The collected results concluded that the intense special exercises and intermittent electrical stimulation at the beginning of the rehabilitation unit contributed to pain relief by reducing the degree of pain within a short period. The researchers recommended using special exercises and stimulation to relieve pain in other similar cases.

أجريت الدراسة خلال الموسمين 2021 و2022 م في ثلاثة مواقع مختلفة الارتفاع عن سطح البحر تنتشر فيها زراعة صنفي التفاح "غولدن ديليشيس" و"ستاركينغ ديليشيس" تابعة لمحافظة اللاذقية وهي (كسب 800 م، صلنفة 1130 م، وخربة سولاس 350 م)؛ حيث تم اختيار 4 بساتين على سفوح جبلية من الاتجاهات الاربعة لكل موقع مدروس، وتم جمع الثمار وفقاً لمرحلة نضج كل صنف، وخزنت الثمار في مخازن مبردة على درجة حرارة 1 ± 1 ° س ورطوبة % 5 ± 90 لمدة 4 أشهر. بهدف دراسة تأثير ارتفاع موقع الزراعة واتجاه السفح في نوعية وجودة ثمار صنفي التفاح "غولدن ديليشيس" و"ستاركينغ ديليشيس" خلال مدة التخزين المبرد. بينت النتائج وجود تأثير معنوي وواضح لارتفاع الموقع واتجاه السفح في مواصفات ثمار الصنفين "غولدن ديليشيس" و"ستاركينغ ديليشيس" قبل التخزين وخلال فترة التخزين المبرد. أظهرت النتائج ارتفاع نسبة الفقد مع زيادة مدة التخزين فقد سجلت أعلى نسبة فقد في السفح الشمالي لموقع خربة سولاس 13.12%، تلاه السفح الغربي 13.13%، بالنسبة للصنف "غولدن ديليشيس". وصلت نسبة الفقد بوزن الثمار للصنف "ستاركينغ" في نهاية فترة التخزين لـ19.30 % للسفح الجنوبي لخربة سولاس. كما لوحظ انخفاض صلابة الثمار بزيادة مدة التخزين؛ إذ انخفضت صلابة الثمار إلى 2.47 كغ/ سم2 في السفح الشمالي لصلنفة، أما في موقع كسب فقد بلغت 2.11 كغ/ سم2 للسفح الشمالي بالنسبة للصنف "غولدن". أما بالنسبة للصنف "ستاركينغ" سجل موقع كسب متوسط صلابة 1.88 كغ/سم2 للسفح الشمالي. بينت النتائج ارتفاع نسبة الـــ TSSبزيادة مدة التخزين؛ حيث بلغت في نهاية مدة التخزين 15.48 % في السفح الشرقي لموقع خربة سولاس، تلاها السفح الجنوبي لموقع صلنفة 15.15 %، والسفح الجنوبي لكسب أيضاً 14.97% بالنسبة للصنف غولدن ديليشيس" أما بالنسبة للصنف "ستاركينغ" فقد ارتفعت نسبة المواد الصلبة الذائبة لـ 15.09 % للسفح الشرقي في خربة سولاس، وفي صلنفة بلغت 14.52% للسفح الغربي وفي كسب 14.86% للسفح الجنوبي.

أُجريت الدراسة خلال العام 2022 م في محافظة اللاذقية في صلنفة وكسب وخربة سولاس، بهدف دراسة تأثير الارتفاع عن مستوى سطح البحر في إزهار وبعض مواصفات ثمار صنفي التفاح Golden delicious وStarking delicious. لوحظ وجود تأثير واضح للموقع الجغرافي والصنف المزروع في مؤشرات الإزهار وبعض مواصفات ثمار التفاح المدروسة. كما بينت نتائج التحليل الإحصائي تفوق موقع صلنفة على موقعي كسب وخربة سولاس في نسبة العقد، وسجلت أعلى نسبة عقد للصنف Golden delicious في موقع صلنفة (51.9%)، ثم موقع كسب (41.5%)، ومن ثم موقع خربة سولاس (37.3%)، كما تفوق موقع كسب على موقع خربة سولاس، وكذلك أيضاً بالنسبة للصنف Starking delicious؛ إذ بلغت نسبة العقد 41.9 و24.4 و17.1% على التوالي. سجلت أعلى قيمة لنسبة الثمار المتبقية عند الصنف ستاركنغ ديليشس (68.73، 58.07، 43.58%) في كل من خربة سولاس، وكسب، وصلنفة على التوالي، بينما بلغت عند الصنف غولدن ديليشس (58.5، 44.78، 40.09%) لكل من موقع خربة سولاس، وكسب، وصلنفة على التوالي. وبينت نتائج التحليل الإحصائي تفوق موقع خربة سولاس مقارنةً مع الموقعين الآخرين. سجلت أكبر قيمة لكل من متوسط وزن وحجم الثمرة عند الصنف ستاركنغ ديليشس (160.2غ، 166.3سم3)، متفوقاً بمعنوية واضحة على الصنف غولدن ديليشس (103.6غ ، 112.5سم3).

هدف الدراسة: هدفت هذه الدراسة لتقييم كل من موقع وشكل الثقبة الذقنية شعاعياً بواسطة الـ CBCT لدى عينة من سكان الساحل السوري، ودراسة العلاقة بين هذين المتغيرين وعوامل الفرد (الجنس والعمر). المواد والطرائق: تضمنت هذه الدراسة الشعاعية الراجعة 200 صورة CBCT (104 إناث، 96 ذكور)، حيث تم تقييم 400 نصف فك،كما تم تقسيم الأفراد ضمن 3 مجموعات عمرية: [20-35],[36-50],[51-65]، واُستخدِمَ التطبيق البرمجي CS 3D Imaging لعرض الصور حيث تم إجراء الدراسة من خلال مقاطع وواجهات عرض متعددة، ثم أُجري التحليل الإحصائي للبيانات باستخدام الحزمة الإحصائية IBM SPSS Statistics 25. النتائج: كان الموقع الأكثر شيوعاً للثقبة الذقنية بين الضاحكين الأول والثاني السفليين بنسبة 52.61% ، ثم تلاه الموقع الذي يتوافق مع طول امتداد الخط المار من المحور الطولي للضاحك الثاني السفلي بنسبة 34.7% ، وكان الشكل المدور هو الشكل الأكثر شيوعاً للثقبة وبنسبة 59% ، ثم تلاه الشكل البيضوي الأفقي وبنسبة 36.5% . الاستنتاجات: ضمن حدود هذه الدراسة نستنتج أن للعمر تأثير على موقع الثقبة الذقنية، لا يملك الجنس والجهة تأثير على كل من موقع وشكل الثقبة الذقنية في العينة المدروسة.