A PID controller satellite attitude yaw-axis control system was designed to step the angle of the satellite body via actuating a precise angular position of a DC motor as quickly and accurately as most optimally possible. The (PID) controller was advantageously chosen for its quick transient response and zero steady-state error. A mathematical model has been derived for the whole satellite attitude yaw-axis control
system. Then, the computation power of the MATLAB is utilized to obtain a generalized optimal controller design that enables the satellite attitude yaw-axis control system to have the quickest settling time without excessive overshoot and zero steady state error.

لما كانت القواعد الدستورية التي تقرر ان السيادة للشعب وهو مصدر السلطات, تقتضي بوجوب التفرقة بين السيادة التي ينفرد بها لشعب وبين ممارسة السيادة من قبل الحكام حيث يتعين ان تمارس في اطار الحدود المقررة بالدستور والقانون, والا فالمسألة هي الجزاء على من لا يلتزم.

ولما كان الاتهام كإجراء يتضمن اسناد افعال محددة دستورياً, فان الدساتير تكفلت بتحديد الجهة التي تتولى مهمة توجيه الاتهام الى الرئيس واعضاء السلطة

هدفت الدراسة إلى بناء مقياس للمعرفة الإدارية لمديري منتديات الشباب والرياضة في بغداد، والتعرف على مستواه من وجهة نظر العاملين، إذ تكمن المشكلة في محاولة من الباحثان للإجابة عن تساؤل محدد هو: هل يتمتع مديرو منتديات الشباب والرياضة في بغداد بالمعرفة الادارية الكافية والتي تؤهلهم لإدارة هذه المؤسسة الحيوية العاملة في المجال الرياضي بغداد؟. وإنتهج الباحثان منهج البحث الوصفي بأسلوب العلاقات الإرتباطية على عي

The current research aims to determine the requirements of Trends of International Mathematics and Science Study (TIMSS 2019) and to find out the extent to which the content of science textbooks for grades (1-4) in the Sultanate of Oman includes the requirements of (TIMSS 2019). Only the content dimension has been taken into account when conducting the content analysis. The study population includes all science books from the first to the fourth grade for the academic year 2021-2022. The study identified and organized the requirements in the study tool, which is a list of requirements of (TIMSS 2019). The results showed a general deficiency in all grades (1-4) in the content dimension including many main topics, subtopics, and objectives

Back ground: One out of six children in the
world today is involved in child labor, doing
work that is damaging to his or her mental,
physical and emotional development.
Objective: Assessment of some health
problems among the studied working children.
Method; A cross-sectional study was
conducted in Al Amen Primary Health Care
(PHCC) during the period from January to
August 2009, a sample of 6048 children were
selected randomly(3218girls and2866 boys age
between 5-17 years ) and interviewed to collect
information using a structured questionnaire
form, information related to different aspects
of child labor prevention were included in the
form as well as a general medical examination
and lab

     This study was designed to investigate the effect of Lactobacillus spp on the histology of cecal tonsils in broiler chicks exposed to heat stress. eighty broiler chicks were divided randomly into four groups equally and treated as follows: 1^st group was administred orally with 1×10⁸/0.1 CFU/ml of (L.B.) at one day old, 2^nd group was treated as 1^st group but at 21 days old, and 3^rd group (control positive), all three groups were exposed to heat stress (38-40Cº) for period 10 days for three hours continuously, 4^th group (control negative) was kept under natural condition. Organ samples from cecal tonsils were taken for histopathological test after

استخدم الباحثان المنهج الوصفي وكانت عينة البحث مباريات المنتخب العراقي المشارك في البطولتين وكانت 9 مباريات وتم تحليل 7 مباريات فقط حيث كانت النسبة المئوية 77.78%، واستخدمت الاجهزة والادوات المختلفة وتم استخدام الادوات والاجهزة المختلفة واعداد استمارة التحليل وتحتسب الهجمة عندما تعبر الكرة خط المنتصف واللاعب العراقي مسيطر عليها قام الباحثان بعرض مباراة واحدة على شاشة الكمبيوتر من اجل احتساب عدد التكرارات

التعددية الحزبية في العراق في ظل غياب قانون الاحزاب

يعد سوق الأوراق المالية فضاء رحب لعمل المصارف بوصفها وسيط يمارس تداول الأوراق المالية لصالح عملاءه، ولما كان الوسيط كشخصية معنويه عبارة عن مصرف، فكان لا بد لهذا البحث من استعراض قواعد الحوكمة التي يلتزم بتطبيقها المصرف الوسيط ، سواء على مستوى تنظيم شخصية الوسيط وتعيين العاملين ضمن هذه الوظيفة، والالتزام بالشروط التي يلزم توافرها في شخصية الوسيط ومساعديه ، أو تطبيق قواعد الحوكمة المصرفية على مستوى المهام

هدفت الدراسة الى التعرف على مستوى استخدام إدارة المعرفة و تكنولوجيا المعلومات لدى القيادات الإدارية تكمن مشكلة البحث في اهمال النساء لممارسة الرياضة بتقدم العمر يؤدي ذلك الى تدهور حالتهن الصحية والبدنية وبالتالي زيادة في اوزانهن وتراكم للشحوم في مناطق مختلفة من الجسم ومحدودية الحركة..... هدف البحث الى اعداد تمرينات للأيروبيكس والتعرف على تأثير هذه التمارين في بعض متغيرات اللياقة الصحية لكبار السن من النسا

     أجريت هذه الدراسة لمعرفة مدى صلاحية ثلاثة  أنواع  من الأسماك المجمدة المستوردة للعراق هي الأسماك الكاملة (التراوت القزحي) Oncorhynchus  mykiss علامة Mersin وأسماك الجري من دون رأس Pangasius  hypophthalmus علامة الصياد وشرائح سمك الجري) النوع نفسه (علامة الفاخر والمشتراة من  ثلاث مناطق في بغداد وهي العامرية والأعظمية والبياع أجريت الفحوص الكيميائية والنوعية لعينات الأسماك المجمدة إذ ق

A field experiment was carried out at the Department of Horticulture and Landscape Gardening, College of Agricultural Engineering Sciences, University of Baghdad .during 2016. to investigate  the genetic diversity for six genotype of snake melon Cucumis melo var. flexuosus  (Qutha ), cultivated in Iraq. These selected genotypes were collected from Iraq's Governorates (Baghdad, Sulaymaniyah, Mosul, Salahadeein, and Diyala )in addition to commercial genotype and designated as A,B,C,D,E, and F, respectively. The treatments were arranged in randomized complete block design (RCBD) with three replications Genetic diversity among the six selected genotype was studied utilizin

This study was aimed to determine the antibacterial activity of onion (Allium cepaL.) aqueous extract against S. aureus bacteria isolated from patients with otitis media. Twenty swabs samples were taken from patients with otitis infection; these samples were cultured on different agar media .Results revealed that half of these isolates were related to S. aureus and the five of these isolates were subject to sensitivity test against several antibiotic groups. Most of isolates 100% were resistance to amoxicillin, chloramphenicol, cefoxitin and pencillin,

The biological adsorption technique was used with the powder of (Chara virgata, Cladophora  fuebllornei) algae with a dry weight of 0.5 g to treat water contaminated with heavy elements of lead, cadmium, copper, chromium and iron at the two following different locations in Baghdad: Al- Waziriyah Batteries factory, and Tanning & Leather Factory. The experiments were performed at a pH 6 and at a speed of 100 rpm in an electric vibrator. The chara virgata showed high removal ratios 100% of lead, cadmium, and iron respectively in the first half hour of the experiment, while the chromium and copper removal rates ranged from 74.6-100%, 73.2-

This study was aimed to evaluate the effect of nitrogen fertilizer, organic root stimulator and gibberellic acid on some growth characters of peach saplings cv. Red June for two consecutive seasons 2017-2018 at College of Agricultural Engineering Science, University of Baghdad. Different nitrogen (Urea 46%N) rates (0,50,75 gm) with three concentrations of organic stimulator (0,0.5,1 gm.L^-1) and two rates of Ga3 (0,50 mg.L^-1) were applied in a factorial scheme (3×3×2). Results revealed that the individual and interactive effect of applying nitrogen, root stimulator and GA3 significantly increased the studied characters, the interaction at N2D1G1 has improve

The present experiment was carried out at the Dept. of Agricultural Machines and Equipment, College of Agriculture, University of Basrah.  The aim of the study is to highlight the effect of the nozzle type, working pressure and their interaction onto droplet quality using knapsack sprayer to improve their performance. Droplet characteristics were sampled on white paper cards at different distances from the nozzle. On the samples spray deposits, spray coverage, droplet size, and volume median diameter was measured using BSF tracer with water after their deposit on the sample. The main studied parameters were: Six nozzle types hollow cone, Flat fan ceramic, flat fan ISO, CFA, AirMix and flat fan air induction nozzle. Two worki

This study was undertaken to investigate the effect of aqueous liquorice extract (ALE) on the growth performance, carcass cuts and intestinal histomorphology of broiler chickens between hatch and 35 days of age. A total of 160-d old (Ross 308) broiler chicks were randomly assigned to 4 treatments, each with 4 replicates, 10 birds per replicate. Four different levels of aqueous liquorice (0, 0.5, 0.7 and 0.9g) were administrated to a liter of drinking water and offered to the birds throughout the entire experimental period. Across the 35 days of trial, administration of ALE to the drinking water resulted in higher (P<0.05) body weight and weight gain. While, feed intake, water intake and FCR did not influence by ALE administrat

A new record of lace bug species Urentius euonymus (family :Tingidae) belongs to (order: Hemiptera and sub order Heteroptera) at first time in Iraq which is collected  three hundred five (350)  insects (males and females) from leaves of weed Chrozophora tinctoria  (family:  Euphorbiaceae) from college of Agriculture Abu- Gharib at 20 / 7 /2017 ,and Al- jaderia at 11/9/2017, insects Indented by used a taxonomic keys, morphological characters was described. Used camera Lucida to draw  bodies' part and picture by digital camera.

This study was aimed to reveal the effectiveness of Immobilization of biomass (dried mix algae) in the form of bead for the removal of copper ions from synthetic polluted water. Various operational parameters such as pH (2–6), biosorbent dosage (0.5–20 g/L) and initial concentration (10–100 mg/L)The results concluded that  a removal efficiency reached up to 90 % , which indicated the fascinated and easiest the handling of biomass. Characterization of the immobilized algae was determined by the Scanning electron microscope with Energy Dispersive X-Ray Analysis (SEM- EDX). The result reveals that the equilibrium time can be reached within 60–80 min. Experimental data were compiled well with Langmuir and Freundlich isot

The Islamic thought still suffers from the problems posed by Western thought in the modern era, especially after the establishment of the modern Arab state, and replacing the intellectual reference that prevailed at that time, which is represented by Islamic thought with another intellectual reference represented by Western thought. Since then, thinkers and innovators and reformers and intellectuals of the Islamists, Are trying to get out of these many problems and multiple, after imposing the nature of that thought and those references with all their consequences, and one of these problems that is still Islamic thought suffers, the bilateral problem that some academics have raisedThe title of the symposium failed The Islamic thought and

Background: Esthetic treatment is the options of patient seeking orthodontic treatment. Therefore this study was conducted to measure the concentration of Aluminum, Nickel, Chromium and Iron ions released from combination of monocrysralline brackets with different arch wires immersed in artificial saliva at different duration, to evaluate the corrosion point on different parts of the orthodontic appliances before and after immersion in artificial saliva, and to evaluate the corrosion potential of each group of the orthodontic appliances. Material and methods: Eighty orthodontic sets prepared. Each set represents half fixed orthodontic appliance, from the central incisor to the first molar, for the maxillary arch, each set consisted of molar

الامن الجماعي في اسيا .. بقلم : لونيك فرو وار

Nanostructure of chromium oxide (Cr₂O₃-NPs) with rhombohedral structure were successfully prepared by spray pyrolysis technique using Aqueous solution of Chromium (III) chloride CrCl₃ as solution. The films were deposited on glass substrates heated to 450°C using X-ray diffraction (XRD) shows the nature of polycrystalline samples. The calculated lattice constant value for the grown Cr₂O₃ nanostructures is a = b = 4.959 Å & c = 13.594 Å and the average crystallize size (46.3-55.6) nm calculated from diffraction peaks, Spectral analysis revealed FTIR peak characteristic vibrations of Cr-O Extended and Two sharp peaks present at 630 and 578 cm-1 attributed to Cr-O “stretching

   This paper deals with the development of a casing program on a well called A4-1 (for confidentiality reasons) for safe and cost-effective production. The data used are geological data and information on different depths. To achieve the paper's objective, first, the different casing installation depths are determined using Excel software, and the mud program required for drilling, as well as the different casing diameters, are found through analysis of the tool selection diagram. After calculating the various pressures and loads, the drilling handbook is used to select the different grades for each casing. The results show that, at a depth of 6480 feet, the surface casing has a diameter of 11"3/4, weight of 65 ppf, and grade K55. At

       يهدف هذا البحث الموسوم بـ (المنهج النقدي في كتاب الرجال للنجاشي(ت 450هـ )إلى تسليط الضوء على حياة النجاشي ومكانته العلمية والكشف عن منهجه النقدي في كتابه المذكور. 

The static characteristics of porous floating ring journal bearing under hydrodynamic
lubrication condition when operating with an improved boundary conditions are theoretically
analyzed. An isothermal finite bearing theory was adopted during this analysis. The effect of
different parameters, namely, permeability, geometrical dimensions of the ring and the bearing are
considered. It was assumed that oil is supplied through the outside diameter of the bearing under
low supply pressure. The angular extent of the oil – film formed in journal – ring and ring – bearing
oil films was obtained by applying the integral momentum equation at the leading edge of the oil –
film to define the beginning of the oil e

The genus Larra Fabricius, 1793 (Hymenoptera: Crabronidae) is recorded for the first time from Vietnam. Three species and two subspecies belonging to this genus as follows: L. amplipennis (F. Smith, 1873); L. carbonaria (F. Smith, 1858); L. fenchihuensis Tsuneki, 1967; L. polita polita (F. Smith, 1858) and L. polita luzonensis Rohwer, 1919 are presented. Keys to both sexes of the three species and two subspecies reported here are provided.

The effect of linear thermal stratification in stable stationary ambient fluid on free convective flow of a viscous incompressible fluid along a plane wall is numerically investigated in the present work. The governing equations of continuity, momentum and energy are solved numerically using finite difference method with Alternating Direct implicit Scheme. The velocity, temperature distributions
and the Nusselt number are discussed numerically for various values of physical parameters and presented through graphs. ANSYS program also used to solve the problem. The results show that the effect of stratification parameter is marginalized with the increase in Prandtl number, and the increase in Grashof number does not practically vary the

A study was conducted to investigate the effect of the brick industry on the environmental system of these project soils of the brick factories in Alnahrawan district. Remote sensing techniques was used to study the relationship between the spectral reflectivity and the vegetative index on the one hand and some surface soil characters of the project and to determine the variation in vegetation cover for the same area and for two different periods.Ten sites were selected to study spectral reflectivity under similar geomorphological conditions near the brickworks project in the Anahrawan district with an area of 10,000 hectares. Soil samples were taken from the surface and at a depth of 0-30 cm. Some chemical and physical character