احمد عبد الله دانوك, علاء عبدالسلام يحي الحمداني

كلية الادارة والاقتصاد-جامعة الموصل · العراق

عطية محمد الهادي, ليلى مشارة , هنية نفيدي

كلية العلوم الدقيقة-جامعة الشهيد حمة لخضر - الوادي · الجزائر

في هذا العمل التجريبي، تم التحقق من تأثير أكياس القطن المملوءة بالفوسفات على أداء التقطير الشمسي ، يتم في هذه الدراسة توزيع 25 كيس فوسفات بشكل منتظم (5 × 5) في صندوق خشبي مربع طول يساوي 50 سم، يسمى المقطر الشمسي المعدل (المدروس). تمت مقارنة هذا النظام مع المقطر الشمسي التقليدي (الشاهد) في نفس الظروف المناخية. من أجل زيادة سعة تخزين الطاقة ، يتم وضع أكياس الفوسفات بشكل عمودي ، من أجل زيادة مساحة سطح الماء حيث تلعب الشعيرات داخل أكياس الفوسفات دورًا مهمًا في زيادة سعة تخزين الطاقة. أجريت التجارب في جامعة الواد بالجزائر في أفريل 2020. تم إنتاج المحصول التراكمي 2.656 و 3.7 كلغ/م² من الشاهد و المدروس على التوالي. تم تحسين الكفاءة الإجمالية للمقطر الشمسي (المدروس) بنسبة 39.30٪ مقارنةً بـالمقطر الشاهد

HADJAR Sonia, MECHERI Manel

كلية الآداب واللغات-جامعة العربي التبسي - تبسة · الجزائر

عواطف كنوش مصطفى التميمي, هادي شندوخ حميد السعيدي

كلية الآداب-جامعة البصرة · العراق

Boulahrouz Meriem, Ouchenane-K

كلية العلوم والعلوم التطبيقية-جامعة العربي بن مهيدي - أم البواقي · الجزائر

Le But de ce travail est l’étude d’une structure de bâtiment en béton arme à usage d’habitation,implantée à OUM BOUAGHI qui est classée comme une zone de faible sismicité. Larésistance du bâtiment est assurée par un système de contreventement portique contreventepar des voiles.La conception a été faite selon le règlement de construction en vigueur (RPA99 version 2003,CBA93, BAEL91). L’étude dynamique a été faite sur le logiciel ROBOT 2014.

Abdel Salam Gerais, MUSA OMER MAHGOUB

كلية الطب-جامعة الخرطوم · السودان

Background: Induction of labour is not without hazards for both motherand foetus. Failure of induction of labour leads to delivery by emergencycaesarean section with its all complications.Methods: This prospective study was conducted to find the causes offailure of induction of labour in Khartoum state in four hospitals(Omdurman Maternity Hospital, Khartoum Hospital, Khartoum NorthHospital and Police Hospital) in the period from 20.12.2002 to 20.8.2003.All patients planned for induction of labour data werecollected in a pre-designed questionnaire. We concentratedon the cases of failed induction of labour, which delivered bycaesarean section.Results: Three hundred fifty one cases of induction of labour were studiedin the four hospitals out of them one hundred and two cases weredelivered by emergency caesarean section.Failure rate is 29%.- The post-term pregnancy was the major indication (44%) forinduction of labour.- One hundred and two cases were delivered by emergencycaesarean section, due to failure of induction of labour, othersdelivered vaginally.- Failure rate is ( 29% ).- The post-term pregnancy was the major indication ( 44 % ) forinduction of labour.- Hypertension and pre- eclapmsia ( 20 % ) .- Prelabour rupture of membranes ( 19.5 % ) .- Diabetes Mellitus ( 11.5 % ) .- Intrauterine growth restriction ( 5 % ) .The method used for induction of labour was oxytocin combined withamniotomy in 60 % of cases.Prostaglandin E2 vaginal pessary was the method used for 30 % of cases.Artificial Rupture of Membranes alone was the method used in 10 % ofcases.Conclusion: Failure of induction of labour was mainly due to the unripecervix and a previous caesarean section.

أشواق بوزيدي , إلياس جوادي, غزال عبد الرزاق

كلية العلوم الانسانية والاجتماعية-جامعة محمد بوضياف - المسيلة · الجزائر

حنان بوفناية, زينب فعرور, محمد سليمان قارة

كلية الاداب واللغات-جامعة محمد الصديق بن يحيى - جيجل · الجزائر

اللغة العربية غنية بأساليبها ووسائلها ومن بين هذه الوسائل نجد التضمين؛ وهو مشترك لفظي ويكون موضوعا لعدة معاني في العلوم المختلفة فالكلام فيه تتنازعه الحقيقة والمجاز أي البلاغة والنحو؛ فهو تضمين اسم معنى اسم آخر أو تضمين فعل معنى فعل آخر. وقد ارتأينا أن نخصص بحثنا هذا على البلاغة والنحو ومن هنا كان عنوان بحثنا ظاهرة التضمين بين البلاغة والنحو في القرآن الكريم واختيارنا لبحث ظاهرة التضمين بين البلاغة والنحو ليس اختيارا عشوائيا بل يرجع لسببين رئيسيين. رغبتنا في تناول موضوع التضمين بين البلاغة والنحو في القرآن الكريم باعتباره يتناول كلام الله سبحانه وتعالى فهو مسألة دقيقة حساسة.- دراسة العلاقة التي تكمن بين القرآن الكريم والبلاغة والنحو وإلى جانب هذه الأسباب هناك مجموعة من الأهداف تتمثل في:- دراسة العلاقة بين القرآن الكريم وما يتضمنه من بلاغة ونحو.- محاولة اكتشاف الجوانب الخفية في هذا الموضوع خاصة في جانبه التطبيقي.- التمكن من معرفة ما يتضمنه القرآن الكريم من الصور البيانية والبديعية والنحوية

بورزامة مصطفى, كنزة عويش

كلية العلوم الانسانية والاجتماعية-جامعة مولود معمري - تيزي وزو · الجزائر

سرى كامل جبر زامل, علي صلاح حسن, عودة جبار بريهي

كلية هندسة المواد-جامعة بابل · العراق

A low-cost, long-wavelength optical sensor has been manufactured using Spin Coating technology on a glass substrate. The sensor consists of a polymeric nanocomposite composed of PEDOT:PSS polymer, in addition to nano-graphene in different weight ratios (0.5, 1, 1.5, 2).Also, Isopropyl Alcohol )IPA(was added as a dispersant to improve the diffusion of graphene nano-filler within the main phase of the complex and it was compared with the initial compound (PEDOT:PSS/Graphene)To ensure good adhesion between the glass substrate and the components of the nanocomposite, the surface of the substrate was prepared according to international contexts and chemically etched using Piranha solution consisting of hydrogen peroxide (H2O2)and concentrated sulfuric acid (H2SO4). Roughness and Wettability tests were carried out before and after the etching of the prepared substrates.The optical method was adopted to measure the thickness of the prepared films and to ensure that all the prepared films were of equal thickness.A zeta potential test was conducted to ascertain the role of the proposed dispersant material (IPA) to increase the diffusion of the nano-graphene filler, as this dispersant material was used for the first time with nano-graphene and it was proposed to overcome the problem of graphene deposition after a few hours of preparing the suspension, which was Do not use the same suspension the next day of laboratory work.Infrared spectroscopy (FTIR) was employed to determine the type of bonding between the components and to suggest a model for the bonding,while the X-ray diffraction (XRD) technique was used to study crystalline variables.The effect of the nano-filler on thermal transitions was monitored using a differential scanning calorimeter (DSC), and scanning electron microscopy (SEM) and atomic forces (AFM) studied the morphological properties. As for the optical properties, they were studied by UV-Vis spectroscopy. Visible spectrometer The electrical conductivity was measured by DC Keithley device, while wettability was studied according to the principle of contact angle. The results confirmed the success of the surface preparation and chemical etching processes in changing the topography and surface roughness of the substrate, in a way that ensures efficient adhesion of it with the nanocomposite. It was also found that the method of rotary coating used has the ability to produce films of close thickness. It was 245 ± 5 nm. The results also showed the ability of the proposed dispersant material (IPA) to bring about the desired change in preventing the deposition of graphene nano-filler and increasing the stability of the suspension from good stability to excellent stability, as the zeta potential changed from -48.04 to -168.38 Millivolts as well as mobility changed from -2.27 to -/ (V/cm) 1.6 (μ/s).The results of infrared spectroscopy showed that no chemical reaction occurred between the components of the compound, and only the occurrence of hydrogen bonding's, and accordingly a model of the attraction between the components was proposed, which is achieved in three steps. A new bonding occurs between the oxygen (which is present at 1% in the graphene sheets) with the hydrogen available in the polymer, thus increasing the surface activity of the graphene (it has hydroxyl groups), which qualifies it to bond with the available water.The addition of graphene caused noticeable effects on the crystallinity, as it transformed the semi-crystalline structure of the pure polymer into a crystalline structure. At position 2Ɵ= 550. The increase in crystallinity was enhanced by accompanying calculations such as the crystallite size according to the Scherrer equation, which increased from 0.1 to 2.8487 nanometers, and the scattering function, which increased from 0.25783 to 0.29921. The addition of graphene also caused an increase in the degree of glass transition (Tg) by 35% and a shift from the hydrophilic nature to the hydrophobic nature, as the contact angle changed from 74.6450 to 136.6240.The results of the AFM showed an increase in the roughness coefficients, as the average roughness (Sa) increased by about 92% and the density of the peaks (Sds) by 45%. These results matched with the SEM images, which showed that the PEDOT:PSS films without graphene have a relatively smoother surface than the surfaces of the nanocomposites. . The fluid retention index (Sci) increased by 7.23% due to the formation of very small compartments that store fluids in the superimposed as a result of the aforementioned hydrogen bonding, in the same context. The surface bearing index (Sbi) increased by a very high (525%), which indicates the expected improvement in the mechanical specifications of the prepared films. The spectroscopy of UV-visible rays proved that the addition of graphene, (especially with IPA)an increase in the absorbance in all three regions of the spectrum (UV region, infrared region, and visible region) and the increase is at its peak in the UV region, which indicates the possibility of the prepared sensor resisting deterioration. Ultraviolet radiation (because it will absorb it and dissipate it inside it in the form of a slight heat) and its ability to work within a long wavelength that includes the three regions. The spectroscopy itself proved that the band gab energy decreased, especially after the addition of the dispersant material, and that the gap values are within the working range of the sensors. This spectrometry also showed clear changes in the excitation and damping coefficients and the dielectric constant. The electrical conductivity measurements showed a significant increase by adding Nano graphene