Preferred Language
Articles
/
bsj-3271
Aquatic Oligochaeta (Annalida:Clitellata) as Bio Indication for Sediment Quality Assessment in Tigris River Within Baghdad City /Iraq
...Show More Authors

Aquatic Oligochaeta is an important group of Macroinvertebrates that has been very remarkable as bioindicators for assessing water pollution and determining its degree in water bodies. Hence, the idea of the current study aims at studying the impact of Baghdad effluents on the Tigris River by using oligochaetes community as bioindicators . For this purpose, four sites along the inside of Baghdad has been chosen. Site S1 has been located upstream, site S2 and S3 has been at midstream and site S4 at the downstream of the River.This investigation has used different types of biological indicators, including the  percentage of oligochaeta  within benthic invertebrates, which ranged from 49.2-51.28%. The highest percentage of the tubificid worms in the benthic samples has been 26.95% and recorded at S4, while the lowest percentage has been 14.45% recorded at S1. Pollution index D ranged between 0.34 and 0.52. The highest value of the ratio of  oligochaeta to Chironomidae larvae has been 3.5 recorded at S4, while the lowest value has been 2.6 reported at S1. The percentage of L. hoffmeisteri within the oligochaetes community has been from 35-56%.  The highest value of  biological quality index Io has been   9.89  recorded at S1, and the lowest value has been (5.57)  recorded in S4.  A Composite index of Biological quality  (Eo) index recorded as C5 in S1 and C4,D3 and E3 in the other sites.  Oligochaeta index of sediment bioindication (IOBS) values ranged between 2.55 at S1 and 1.15 at S4. The tubicid index of sediment TUSP reported at d the highest value (52.57%) at  S4 where as the lowest value has been 28.68% at S1. The highest species richness value has been 7.35  recorded at S1 and the lowest value has been 6.12 at S3. Shannon- Weiner diversity index (H) ranged from 0.06-0.049 Bit/ind. Species uniformity index (E) has been 0.018-0.016.It is clear from the results that most of the biological indices indicate that the Tigris River sediment has been slightly impacted by anthropogenic activity during its passage through the Capital Baghdad.  S1 is considered as a reference site, as it has presented the first point of entry of the Tigris River to Baghdad and then the sediment gradually  has become polluted to reach its highest degree in  the last site S4 after passing through several  slightly polluted sites.

Scopus Clarivate Crossref
View Publication Preview PDF
Quick Preview PDF
Publication Date
Thu Mar 30 2023
Journal Name
مجلة نسق
اثر استراتيجية فجوة المعلومات في تصيل مادة الكيمياء عند طلاب الصف الثاني المتوسط
...Show More Authors

ريل لسادة الكيسياء َ جؼ البحث الى التعخؼ عمى أثخ استخاتيجية فجػة السعمػمات في التح َى جؼ البحث فقج صيغت الفخضية التي َ تػسط , والتحقق مغ ى ُ جى شلاب الرف الثاني الس َ ل جؼ البحث أعتسج الباحث َ تتعمق بالتحريل ولتحقيق ى ػعتيغ متداويتيغ ُ بي لسجس ِ ي السشيج التجخ ريل الجراسي , تكػنت عيشة البحث مغ َ ) شالب مغ شلاب ٗٛ( ذواتي اختبار بعجي لمتح -ٕٕٕٓالرف الثاني الستػسط في ( متػسصة الذييج خزيخ جاسع العارضي ) لمعاـ الجارسي (

... Show More
Preview PDF
Publication Date
Mon Jun 01 2020
Journal Name
مجلة جامعة الانبار لللعلوم القانونية والسياسية
تقويم قواعد إدارة الشركات في ضوء قانون الشركات العراقي رقم 21 لسنة 1997،
...Show More Authors

تقويم قواعد إدارة الشركات في ضوء قانون الشركات العراقي رقم 21 لسنة 1997،

Publication Date
Mon Nov 08 1013
Journal Name
كلية الفنون الجميلة
إشكالية الخطاب الجمالي للجسد في النحت العالمي المعاصر، دراسة على وفق المنهج الظاهراتي
...Show More Authors

اهتم في الربع الأول بالمفاهيم النظرية للمناهج التي تقع في النقاط الخمس ، النقطة الأولى تتعلق بمفهوم الخطاب والخطاب المادي ، وقلنا أن الرسالة كانت مبنية على الجسد من البداية ، حتى قبل ذلك هناك ستكون فلسفة أو معرفة المنظمة. أما النقطة الثانية فتتعلق بالمفهوم الفينومينولوجي للخطاب ، ونحن في هذه المرحلة أهم الركائز التي قام عليها (إدموند هوسرل) في بناء مفهوم وصفي ضعيف. في النقطة الثالثة نكشف عن الظواهر المتعلقة ب

... Show More
View Publication Preview PDF
Publication Date
Fri Mar 15 2019
Journal Name
Al-khwarizmi Engineering Journal
Studying the effect of Different wt % AL2O3 Nanoparticles of 2024Al Alloy / AL2O3 Composites on Mechanical Properties
...Show More Authors

 

The nanocompsite of alumina (Al2O3) produced a number of beneficial effects in alloys. There is increasing in resistance of materials to surface related failures , such as the mechanical properties , fatigue and stress corrosion cracking .The experimental results observed that the adding of reinforced  nanomaterials  type Al2O3  enhanced the   HB hardness, UTS, 0.2 YS and ductility of 2014 Al/Al2O3 nano composites . the analysis of experiments, indicated that The maximum enhancement was observed at 0.4 wt.% Al2O3. The ultimate improvement percentage were 15.78% HB hardness, 18.1% (UTS), 12.86% (

... Show More
View Publication Preview PDF
Crossref (7)
Crossref
Publication Date
Sun Apr 02 2017
Journal Name
Journal Of Educational And Psychological Researches
" أثر استراتيجية الجيجسو في تحصيل مادة الجغرافيا وعمليات العلم لدى طالبات المرحلة الاعدادية"
...Show More Authors

The goal of current researcher to know the impact of strategic Jigsaw in the collection of hypertext and geographic operations of science students at the preparatory stage And that by checking the following 1.There is no difference statistically significant at the significance level 0.05 between the experimental group students who were studying strategy Jigsaw and between the control group students who studied in the usual way traditional degrees in the average achievement in the subject of geographical 2.There is no difference statistically significant at the significance level 0.05 between the experimental group students who were studying strategy Jigsaw and between the control group students who studied in the usual way traditional av

... Show More
View Publication Preview PDF
Publication Date
Mon Aug 01 2016
Journal Name
Journal Of Economics And Administrative Sciences
The causal relationship between debt size and Economic value added With contrast of the Frim Size
...Show More Authors

Abstract

       The research aims to identify  the  nature of  the relationship between the level of debt used  and economic  value  added  of companies listed on the Iraq Stock Exchange under the Contrast sizes of these companies , The research addressed the theoretical concepts associated with each of the debt financing , economic added value and Organization size With the use of financial techniques in the practical side to measure these variables, The research community Represent of  the shareholding companies listed on the Iraq Stock Exchange with a choice of intentionally sample of 24 joint stock companies representing&nbsp

... Show More
View Publication Preview PDF
Crossref (3)
Crossref
Publication Date
Mon Nov 12 2018
Journal Name
Arab Science Heritage Journal
المادة المادة السابعة في معاهدة باريس لعام 1856 وموقف الدول الأوربية الكبرى منها
...Show More Authors

            The issue of the survival of the Ottoman Empire during the nineteenth century, a controversial topic in European diplomacy, was what was called the "Eastern Question" containing the fate of this country and its regions sprawling one of the hottest topics in the diplomatic major European powers of that century

View Publication Preview PDF
Publication Date
Sun Oct 03 2010
Journal Name
Journal Of Educational And Psychological Researches
The Effect of Applying K-W-L Technique on Teaching ESP Students
...Show More Authors

         Over the last few decades, many instructors have been trying all kinds of teaching methods, but without benefit. Nevertheless, in the 1986, a new technique is appeared which called K-W-L technique, it  is specified for reading comprehension passages because reading  skill is not easy matter for students for specific purposes (ESP).therefore, the K-W-L technique is a good one for thinking and experiences. To fulfill the aims and verify the hypothesis which reads as follows" it is hypothesized that there are no significant differences between the achievements of students who are taught according to K-W-L technique and those who are taught according to the traditional method

... Show More
View Publication Preview PDF
Publication Date
Fri Feb 08 2019
Journal Name
Journal Of The College Of Education For Women
تجلیات اللغة الایحائیة في دعاء الصباح للامام علي بن ابي طالب (علیھ السلام)
...Show More Authors

The literary aspect of any text reveals when it used The inspiration language
which reveals the creative aspect of language for the creator (writer) he in turn
will seek for the best choice from these aspects then, he will distribute them due
to their intention, and according to the their context
Thus, propagandistic text contains many moral features which the language
accord to thus , we found that the morning (dua al asbah)is full of creative
literary manifestations through many abstentions which happened in different
structures that contain the text, especially in structure of metaphor, and contrast.
we found many outstanding gaps and abstentions in these are given life, matter
that gives the text the most l

... Show More
View Publication Preview PDF
Publication Date
Thu Mar 01 2012
Journal Name
Journal Of Accounting And Financial Studies ( Jafs )
Predicting changes on budget expenditures using Markov chains with practical application
...Show More Authors

The researchers have a special interest in studying  Markov  chains as one of the probability samples which has many applications in different fields. This study comes to deal with the changes issue that happen on budget expenditures by using statistical methods, and Markov chains is the best expression about that as they are regarded reliable  samples in the prediction process. A transitional matrix is built for three expenditure cases (increase ,decrease ,stability) for one of budget expenditure items (base salary) for three directorates (Baghdad ,Nineveh , Diyala) of one  of the ministries. Results are analyzed by applying  Maximum likelihood estimation  and Ordinary least squares  methods resulting

... Show More
View Publication Preview PDF