Laid Chahrazed, Rahmani Fouad Lazhar

كلية العلوم الدقيقة-جامعة الاخوة منتورى - قسنطينة 1 · الجزائر

BOUZIANE TAHAIR, Ihaddaden Belai, Sekirifa Med Lamine

كلية العلوم والهندسة-جامعة قاصدى مرباح ورقلة · الجزائر

Abdelkader Chouaih , Amina Lahouali Dit Yahyaoui

كلية العلوم التكنولوجية-جامعة عبد الحميد بن باديس مستغانم · الجزائر

Le travail présenté dans ce manuscrit est consacré à l'étude de la distribution de la densité électronique par diffraction des rayons X haute résolution de la molécule Le (E)-N'-(4-nitrobenzylidène)-2-(quinolin-8-yloxy) aceto hydrazide monohydrate est un composé organique de famille quinoléines de formule chimique C18H14N4O4, H2O. Ce composé appartient à la famille des matériaux organiques à propriétés optiques non linéaires et la médecine ,la biologie. L'analyse de la densité de charge nécessite un affinement multipolaire des donnés de diffraction X obtenue à une basse température. Cet affinement a été réalisé à l'aide du modèle de Hansen-Coppens implémenté dans le logiciel Mopro version 2018. La distribution de la densité de charge est décrite en détails pour mettre en évidence le transfert de charge au sein de la molécule. La connaissance de la densité de charge précise ainsi que les paramètres d’agitation thermique de notre molécule nous a permis de remonter aux grandeurs physiques électrostatiques du composé, telles que les charges nettes atomiques, le potentiel électrostatique au voisinage de la molécule ainsi que le moment dipolaire . La bonne qualité des cartes de densité obtenues témoigne de la qualité des données de diffraction X ainsi que la validité du modèle utilisé (modèle multipolaire de Hansen-Coppens) qui est actuellement le plus utilisé. Le moment dipolaire électrique μ ,le laplacien et les points critiques. Il convient de noter que l'accord entre les résultats expérimentaux était satisfaisant.

أحمد البشير محمد حسن, سلمى عثمان صالح محمد, هالة الطاهر

كلية العلوم الزراعية-جامعة الجزيرة · السودان

In the Sudan, Gezira Scheme, the cotton, Gossypium barbadense was grown under irrigation without insecticidal use for more than thirty years (1911-1945). That may be due to the traditional growing of cotton, in the same area under rainfed before the establishment of Gezira Scheme. Such practice witnessed a balanced agricultural ecological system in the cotton growing area. Since seasons 1945/46 till now more than 300 insecticides and insecticide mixtures were recommended. The average of yield was less than 7.0 kantar/feddan for upland cotton. The objective of this study to test the effects of sown crop of cotton with various spacings upon insect pests infestations natural enemies and quantity and quality of cotton produced. In this study early sowing during June with various spacing without insecticidal spraying were tested for the Brazilian (LL) variety . The crop was planted in June 20, 2012. The spacing tested were 10.0 cm, 20.0 cm, 30.0 cm and 40.0 cm between holes to be compared with the practiced spacing, 50.0 cm. Insect pests and natural enemies were monitored. The results showed that the sucking insects, Jassid Empoasca lybica and the whitefly, Bemisia tabaci were shown in July, increased in number to reach the peak in August and then decreased to reach the bottom in October. The variety under test was attacked by the bollworms, Helicoverpa armigera and Erias insulana. However the shedding of fruiting bodies due to bollworms was recorded. H. armigera reflected higher damage of fruiting bodies during August among wider spacing (40 and 50 cm) and the result was opposite during September. For E. insulana, damage of fruiting bodies was lower among wider spacing compared to narrow spacing during August and September. Natural shedding of fruiting bodies was low during August and high during September among wider spacing (50.0 cm). The buildup of natural enemies started in July to reach the peak in September and decreased in October, in a density dependent pattern with sucking insect pest populations. The yield of cotton lint in kantar per feddan was 5 folds more at 10.0 cm spacing and 2.5 folds more at 20.0 cm compared to the recommended spacing 50.0 cm. However, the quality, read as stickiness, was satisfactory among all spacing under test. The study revealed that narrow spacing reflected better performance of natural enemies that checked the insect pest infestations and hence higher yield with good quality of cotton. Results were discussed with previous work in the field of study.

Kelty Sarouphim, Alaa Nazem Inzawi

مدرسة الآداب والعلوم-الجامعة اللبنانية الأميركية · لبنان

The purpose of this study is to determine whether self-concept has an influence on academic achievement and whether self-concept of behavior has an effect on the behavior of grades 3rd, 4th and 5th students. The three variables investigated are self-concept, behavior and academic achievement. One school and 3 grade levels (5 sections in all) from one private school in Beirut. The instrument used to measure the participant's self-concept is Piers-Harris2. Academic achievement is measured by the global average of each student in the main subjects (math, English, Arabic and science). The data obtained was analyzed using SPSS for Windows. Students' responses on the Piers-Harris2 scale were correlated with their total academic achievement. The student's behavior is assessed through observations during different settings and at different times. Also interviews with the home room teachers of each student observed were conducted. The data obtained was analyzed qualitatively. The results showed non-significant correlation between academic performance and self-concept on one hand and between self-concept and behavior on the other hand. Based on the results, implications and suggestions for future research were drawn.

محمد حسين مقبول, ميلود الفروجي

كلية العلوم الاسلامية-جامعة الجزائر 1 - بن يوسف بن خدة · الجزائر

H. Khalaf , Saida Yakoubi

كلية العلوم الهندسية-جامعة سعد دحلب - البليدة · الجزائر

زينب ربيعة, فوزية عمروشي

كلية الاداب واللغات-جامعة محمد بوضياف - المسيلة · الجزائر

RésuméNotre étude a porté sur le sujet de l' écriture de guerre et la douleur qui l'accompagne dans les deux romansTerre et cendres et L'incendie des auteurs Atiq Rahimi d'Afghanistan et Mohamed Dib d'Algérie, où lesdeux ont utilisé la fiction pour expliquer évoquer le thème de la guerre.

Wleed Ibraheem Ail Adam, Mohamed Alfadel Mohamed

كلية الدراسات العليا-جامعة السودان للعلوم والتكنولوجيا · السودان

Recently measuring of cardiac performance by scintigraphy has been used asindicator of heart muscle ability to contract . This study aimed to identify andevaluatecardiac performance (cardiac output) by nuclear medicine technique.The data was collected from 50 patients at Elnilein medical center, department ofnuclear medicine, during the period This study was conducted during the periodfrom april 2014 to august 2014. The patients were injected with a 99mTcO-4sestamibi then gamma camera was used to detect the count rate and hence wascalculated. The data were analyzed by using statistical packages for social studies(SPSS) under windows using linear association between arterial blood pressure andage, body mass index, stroke volume, cardiac output and ejection fraction. Theresults showed that the total 50 patient with main age equal60.46 ± 12.0 years and27.8 ± 7.0 for body mass index.The mean heart rate, stroke volume, ,ejectionfraction and cardiac output for the patient included in this study was79.50 beat perminutes ± 11.1 , 79.46 ml ± 11.9, 61.8 % ± 4.6 and5.90 L/min ± 1.2respectively.Consequently the results revealed that the stroke volume ,ejectionfraction, age and body mass index as the sesdecrease as heart rate increase.by0.897 ml per heart beats, 0.221 % per heart beats,60.46 years ± 12.0 and 27.8 ± 7.0units respectivelycardiac output have diect proportiona with heart rate. the cardiacoutput increase by .0.089 l/min per heart rate .

BOUAITA Haïfa, HADJAR Sonia

كلية الآداب واللغات-جامعة العربي التبسي - تبسة · الجزائر