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GROWTH AND CARCASS COMPOSITION OF LOCAL IRAQI BLACK GOATS
نمو وتركيب ذبائح المعز العراقي الاسود

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Abstract

The pattern of growth and carcass composition of indigenous Iraqi black goats wereassessed through serial slaughter and carcass dissection of 36 kids at six different growthphases. The general linear model procedure and allometric growth ‘equations were used toassess the effects of various factors and differential growth of carcass components, 'respectively. Results showed that kids growth and carcass composition were significantly (P<0-05 to P< O-O01) affected by the growth phase and sex of kids. The effects of growth phaseclearly showed that slower growth of the body and of carcass components were observedduring the third phase (i.e. after weaning). Although there was an effect on fat to lean ratios (P_ < 005), growth phase had no significant effect on dressing out proportion, and lean to boneratios. A significant influence of sex (P < 0-O5) "was observed on lean to bone ratios. Thelog/log regression of weights of dissectible carcass components on hot carcass and emptybody weight showed that the differential growth of bone was declining and that of lean wasisometric relative to the growth of empty body weight. For carcass fat, the allometric growthcoefficients (b) of 1.6 indicated that fat is a late maturing body component. Moreover thegrowth of carcass fat relative to empty body weight in local goat was slower than that reportedfor other goat breeds


Article
The variation of the lower anterior facial height and its component parameters among the three over bite relationships (Cephalometric study)

Authors: Saba H Al–Zubaidi --- Hussain AA Obaidi
Journal: Al-Rafidain Dental Journal مجلة الرافدين لطب الأسنان ISSN: 18121217 Year: 2006 Volume: 6 Issue: 8 Pages: 106-113
Publisher: Mosul University جامعة الموصل

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Abstract

Aims: To evaluate the genders and over bite subjects group variation for the lower anterior facialheight (LAFH) and its component parameters in Iraqi population in Mosul City. Materials andMethods: The study was performed by using measurements on pretreatment cephalometric radiographsof 79 patients, 27 with normal over bite and 26 for each open and deep over bite. The age ranged from12–16 years with Class I dentoskeletal relationship. Results: The normal over bite group wassignificantly larger maxillary anterior alveolar ratio and the mandibular anterior and basal height inmale when compared with female. Deep bite group appeared significantly larger mandibular anterioralveolar depth in males than in females. The open bite group showed significantly larger interincisalangle in females than in males. Multiple range variation analysis of the lower facial height and itscomponent parameters disclosed no significant differences in these parameters among the over bitegroups except that the open bite group was significantly larger mean value in the LAFH andsignificantly lower mean value in the interincisal angle when compared with normal and deep bitegroups. Conclusion: The significant gender variation of the LAFH and its components of the normalover bite group were appeared in maxillary anterior alveolar depth, ratio and mandibular anterioralveolar height; whereas in deep bite group appeared in mandibular anterior alveolar depth, and in openbite group demonstrated in the interincisal angle.


Article
Study Of Performance Of S.I.E. Fueled With Supplementary Hydrogen To Gasoline

Author: Miqdam T. Chaichan
Journal: Journal of Engineering مجلة الهندسة ISSN: 17264073 25203339 Year: 2006 Volume: 12 Issue: 4 Pages: 983-996
Publisher: Baghdad University جامعة بغداد

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Abstract

This paper includes study of performance of single cylinder, 4-stroke spark ignition engine Ricardo E6, with variable compression ratio, spark timing and equivalence ratio, fueled with supplementary hydrogen to gasoline.The speed of 25 rps and higher useful compression ratio were chosen in studying the effect of wide range of equivalence ratios and spark timing.The results showed that HUCR for mixture of two fuels was (9:1). The brake power when operated with gasoline was higher than when it was fueled with hydrogen alone, but when mixing two fuels the brake power increased and became higher than that when working with gasoline to a certain limit (the hydrogen volumetric ratio in the mixture reached 80%), after this limit the brake power reduced by increasing hydrogen volumetric ratio. The equivalence ratio at which the brake power reach its highest value was between (Ø=1-1.1) when mixing the two fuels. The results showed that the engine can work with very lean equivalence ratios with supplementary hydrogen, the indicated thermal efficiency increased also, and the brake specific fuel consumption reduced when hydrogen volumetric ratio increased.

تضمن هذا البحث دراسة أداء محرك أحادي الاسطوانة رباعي الأشواط يعمل بالشرارة، نوع (Ricardo E6)، ذي نسبة انضغاط وتوقيت شرر ونسبة مكافئة متغيرة عند عمله بإضافة الهيدروجين للجازولين. تركزت الدراسة على بحث تأثير متغيرات رئيسية في أداء المحرك، وهي نسبة الانضغاط والنسبة المكافئة وتوقيت الشرر والسرعة، أظهرت النتائج أن نسبة الانضغاط النافعة العليا لخليط من الوقودين هي (1: 9)، وان القدرة المكبحية كانت تزداد بزيادة نسبة الانضغاط، كما ان القدرة المكبحية في حالة الجازولين تزيد عن تلك الناتجة باستخدام الهيدروجين، ولكن عند خلط الوقودين تزداد القدرة المكبحية عن حالة استخدام الجازولين الى حد معين، (نسبة الهيدروجين الحجمية في الخليط 80%) بعدها تقل بزيادة هذه النسبة.وان النسبة المكافئة التي تم الحصول عندها على أعلى قدرة مكبحية تتراوح بين (Ø=1.0-1.1 ) عند خلط الوقودين، كما بينت الدراسة ان المحرك يمكن أن يعمل عند نسب مكافئة ضعيفة جدا" بإضافة الهيدروجين، كما ان الكفاءة الحرارية البيانية تزداد بهذه الإضافة، ويقل معدل الاستهلاك النوعي المكبحي للوقود بزيادة النسبة الحجمية للهيدروجين المضاف.


Article
TWO-WAY MULTIVARIATE REPEATED MEASUREMENTS ANALYSIS OF VARIANCE MODE
نموذج تحليل التباين ذي الطرفين للقياسات المتكررة المتعدد المتغيرات

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Abstract

The two-way multivariate repeated measurements analysis of variance (2-way MRM ANOVA) model for complete data is studied by considering the case of multivariate response variables. The test statistics of various hypotheses on between-units factors, within-units factors and the interaction between them are given.

تمت دراسة نموذج تحليل التباين ذي الطرفين للقياسات المتكررة المتعدد المتغيرات للبيانات الكاملة فـي حـالـة مـتـغـيـرات الاستجابة الـمـتـعـددة الـمـتـغـيـرات. لـقـد أعـطـيـت الاخـتـبـارات الإحصائية لـمـخـتـلـف الـفـرضـيـات الـمـتـعـلـقـة بـالـعـوامـل بـيـن الـوحـدات و الـعـوامـل داخـل الـوحـدات و الـتـفـاعـل بـيـنـهـمـا.


Article
Structure of to Light Germanium Isotopes in the Framework of the IBM-3
التركيب من الى للنظائر الخفيفة في الجرمانيوم باستخدام إنموذج البوزونات المتفاعلة الثالث (IBM-(3

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Abstract

The nuclear level structure of Ge64-70 is analyzed taking into account the experimental information available, with respect to symmetry of IBM-3. The level energies, electric quadrupole reduced transition probability B(E2), magnetic dipole reduced transition probability B(M1), interband B(E2) ratios and multipole mixing ratios δ(E2/M1)are compared with available data. The adopted level schemes and the mixed symmetry states properties are discussed in the framework of isospin symmetry.

تمت دراسة التركيب النووي لمستويات الطاقة لنظائر الجرمانيوم Ge64-70 مع الأخذ في الأعتبار النتائج العملية المتوفرة وذلك باستخدام التمائل في النسخة الثالثة من نموذج البوزونات المتفاعلة (IBM-3). وقد حسبت طاقة المستويات وأحتمالية الأنتقال رباعي القطب الكهربائي وثنائي القطب المغناطيسي ونسبة الخلط وقورنت مع القياسات العملية. وتمت دراسة خواص المستويات المختلطة التماثل ايضا.

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