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The current study included testing the ability of plant Hydrilla verticillata (L. F.) on the accumulation of two heavy metals in its tissues, and use the plant in phytoremediation. The plant was exposure to different concentrations of chromium and copper metals (2.5, 5, 10, 15, 20) ppm, for a period of fourteen days, for each solution.The results showed that Hydrilla was more efficient in the removal of chromium, where the amount of the remaining concentration of chromium at the last day of the experiment was (0.20 ± 0.014- 0.66 ± 0.114- 0.99 ± 0.176- 0.79 ± 0.073- 1.80 ± 0.131) ppm, while for copper was (0.33 ± 0.06- 1.13 ± 0.39- 1.66 ± 0.05- 1.96 ± 0.043- 2.33 ± 0.0497) ppm at the last day of the experiment, respectively.

The use of online social network (OSN) has become essential to humans' lives whether for entertainment, business or shopping. This increasing use of OSN motivates designing and implementing special systems that use OSN users' data to provide better user experience using machine learning and data mining algorithms and techniques. One system that is used extensively for this purpose is friend recommendation system (FRS) in which it recommends users to other users in professional or entertaining online social networks.

For this purpose, this study proposes a novel friend recommendation system, namely Hybrid Friend Recommendation (FR) model. The Hybrid model applies dual-stage methodology on unlabeled data of 1241 users collected fro

 Let  be a metric space and  be a continuous map. The notion of the  -average shadowing property ( ASP )  for a continuous map on  â€“space is introduced  and the relation between the ASP and average shadowing property(ASP)is investigated. We show that if  has ASP, then   has ASP for every . We prove that if a map  be pseudo-equivariant with dense set of periodic points and has the ASP,  then  is weakly mixing. We also show that if   is a expansive pseudo-equivariant homeomorphism that has the ASP and  is topologically mixing,  then  has a  -specification. We obtained that the identity map  on  has the ASP  if and only if th

A simple, fast, and sensitive spectrophotometric method was suggested for the determination of Bromhexine Hydrochloride (BHH) in its pharmaceutical formulations. The method depends on the diazotization of BHH by sodium nitrite in acidic medium to produce the corresponding diazonium salt. The latter is coupled with phloroglucinol reagent in alkali medium to form a yellow water soluble azo-dye which has a maximum absorption at 405 nm with a molar absorptivity of 2.7×10⁴ l.mol^-1.cm^-1 and Sandellʼs sensitivity of 0.01517 µg.cm^-1. Beerʼs low is obeyed within a concentration range of 0.25-15 µg.mL^-1 of BHH. The LOD and LOQ values of the proposed method were 0.087 µg.mL

Outbreaks of rinderpest in cattle occurred in Mosul area between February to June 1987. The morbidity and mortality

When it comes to changing one's profession after a several years of professional experience in a given field, It must be admitted that the person who adopts this approach is very persevering in the quest for self-realization. Thus, the search for improvement of the working environment and its conditions are often behind this type of choice. To try to understand this phenomenon of professional mobility, we conducted a study that concerning 1st cycle secondary school teachers who became guidance counselors and we focus on two parameters concerning this population: the causes that led them make this choice, and their socio-cultural characteristics (entry profiles). This information was collected via a questionary administered to all active

The theme of causal attribution has generated a great deal of work and focuses on the factors to which people attribute their behavior. However, its use to explain the results of the evaluation and the support for the regulation of teaching and learning acts has rarely been raised. Indeed, in the evaluation act, which is a privileged moment for reframing the learning process, teachers attribute the results obtained to the student himself, without worrying about the factors to which the student attribute itself these failures. This can distort the regulatory process and increase failure factors. The teacher's attributions of failure often relate to the results of the evaluations and are often explained by factors external to him: such as

الابداع الفني الفاعل

Some modified techniques are used in this article in order to have approximate solutions for systems of Volterra integro-differential equations. The suggested techniques are the so called Laplace-Adomian decomposition method and Laplace iterative method. The proposed methods are robust and accurate as can be seen from the given illustrative examples and from the comparison that are made with the exact solution.

Six deeply anestrus Arabian mares associated with small, hard inactive ovaries were treated with synthetic

Gel-biopolymers were prepared by different weights of two polymers (PVA, and PEG) dissolved with distilled water. Thick films of these polymers were prepared by using the casting method, with different thicknesses (t= 0.48, 0.34mm for PVA and t=0.58 mm for PEG). The objective of this research is to determine the viability of the organic polymer films of PEG and PVA on decomposition and the time required for their degradation  in the soil. The purpose is to use these polymers in industry without leaving plastic residues along with the possibility of their application as fertilizers for soil. The results showed that PEG film was degraded during the first week, while PVA film was changed in weight from 0.3 to 0.23 g and thickness from

     The aim of the current study was to compare the efficacy of Kessler suture pattern and polypropylene meshes implantation to repair severed Achilles tendons in bucks. For this purpos 16 local adult bucks, weighing 30-35kg were used and equally distributed into two groups, the first group: (control group) and the second group (mesh group). Animals were sedated with xylazine 2% and anesthetized locally with lidocaine hydrochloride 2% infiltrated subcutaneously. Skin incision approximately 5 cm. in length was made over the Achilles tendon. The tendon was isolated by blunt dissection from the underlying tissue, then the left Achilles tendon was transected in its mid portion. In the control group, tenorrhaphy of Achill

In this paper, we suggest a descent modification of the conjugate gradient method which converges globally provided that the exact minimization condition is satisfied. Preliminary numerical experiments on some benchmark problems show that the method is efficient and promising.  

     The study achieved isolating Campylobacter spp from  diarrheic and non-diarrheic  cows  and studying the percentage of diarrhea in 10 areas in Baghdad governorate (AL Shaeluh, Abou Ghurayb , Khadmyia , Sadar city , Suwyria, Mahmudyia, Latifyia , Alridwaniuh, Hur Rajb  and Yousfyia), One thousand fecal  samples were cultured on different selective culture media specific for Campylobacter spp  ,and different biochemical tests  were used (oxidase reaction, Oxoid biochemical identification system campy, Tripple Sugar Iron ( TSI)  , hippurate hydrolysis and the use of Vietik (NH). Eighty isolates of  Campylobacter spp were recorded ( 8% ).Camp

يحظى أدب الخيال العلمي في العالم المتقدم باهتمام بالغ في الأوساط الأدبية النقدية. ولا يمكن البحث في رواية الخيال العلمي في الإمارات دون أن يأتي اسم الكاتبة نورة أحمد النومان، التي تُعد أول كاتبة وروائية متخصصة في مجال الخيال العلمي. فمن خلال هذا البحث نلقي الضوء على أول روائية إماراتية كتبت رواية الخيال العلمي في روايتها (أجوان). فالخيال العلمي هو الوسيلة المثلى للربط بين الثقافة الأدبية والثقافة العلمية، و

     In this investigation the common carp, Cyprinus carpio L. 1758 was exposed to contaminated feed with Aspergillus flavus under laboratory aquarium conditions (glass ponds) for 90 days. Results revealed that the contaminated feed with (A. flavus) has significantly affect in body weight change, blood and biochemical parameters of groups fed on contaminated feed with A. flavus. Body weight changes were decreased in group feeding on contaminated feed with A. flavus in comparison with control group. The results showed decreases in RBCs, PCV% and Hb concentration but WBCs was increased in treatment fish in comparison with the control group. In addition, serum Glutamic pyruvic

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هدفت الدراسة الحالية التعرف على مدى اتباع حملات الوقاية ضد المخدرات المقدمة للوالدين في امارة الشارقة على المعايير العالمية للوقاية من المخدرات، والتعرف على هذا التقييم وفقا لمتغيرات الجنس وعمل الوالدين والتحصيل العلمي للوالدين، وكيف يمكن تطوير هذه الحملات، ولتحقيق أهداف الدراسة تم اعداد استبانة باعتماد نظرية الضبط الاجتماعي والتي تم تطبيقها على عينة عشوائية طبقية تتألف من أحد الوالدين (الأم أو الأب) لط

       The present article discusses innovative word-formation processes in Internet texts, the emergence of new derivative words, new affixes, word-formation models, and word-formation methods. Using several neologisms as an example, the article shows both the possibilities of Internet word-making process and the possibilities of studying a newly established work through Internet communication. The words selected for analysis can be attributed to the keywords of the current time. (In particular, the words included in the list of "Words of 2019") there are number of words formed by the suffix method, which is the traditional method of the Russian word formation. A negation of these words is usually made thro

     من ظواهر النَّقد الصَّوتيّ عند ابن  السِّيد البطليوسيّ (ت521هـ)، ما يتعلَّقُ بتخفيف الهمزة وتحقيقها، فهي من الظَّواهر الشائعة والمشهورة في اللَّهجات العربيَّة، إذ تعقَّب البطليوسيّ أقوال اللُّغويين في هذه الظَّاهرة الصَّوتية وتناولها بالنَّقد، واستند في ذلك إلى أدلة الصِّناعة اللُّغويَّة وهي: (السَّماع، والقياس، والإجماع)، واخْتَطّ البطليوسيّ لنفسه منهجاً نقديّاً موضوعيّاً، مُنصِفاً، مُعتدِلاً، ب

  يعد الانسان نظام طاقة حركية دائم التبادل مع الطاقات في بيئته المحيطة, وهو يتأثر بها سلبياً وايجابياً وفقاً لتأثيرها النافع أو الضار فيتعرض داخل الفضاء الداخلي الى مجموعة طاقات تؤثر في سلوكه وراحته كالطاقة الكهربائية, والمغناطيسية, وطاقة الضوء, واللون, والصوت, والمادة مما ينعكس ذلك على جودة الفضاء الداخلي والتوازن الحيوي في التصميم, مما تنعكس على المستخدم بتعرضه لبعض الامراض النفسية والجسدية، أن الطاقة ار

تنظر علوم التغذية الحديثة الى ثمار  الزيتون وزيت الزيتون على انها منتجات ضرورية لحياة الانسان نظرا لغنى ثمارها بمركبات اساسية كالزيت والبروتينات والكاربوهيدرات والاملاح المعدنية وبعض الفيتامينات الاخرى والتي لاتكاد تخلو موائد العراق منها كمادة استهلاكية اما على شكل زيتون اخضر او اسود او زيته, ومن هنا جاءت فكرة هذه الدراسة التي هدفت الى تقييم بعض انواع عينات زيت الزيتون التجارية  المستخلصة من ثم

تتمثل مشكلة البحث الموسوم بـ (استراتيجية الابداع والابتكار في تصميم المنتجات ) بالكيفية التي يمكن لأستراتيجية الابداع والابتكار ان تسهم وبشكل فاعل في تصميم المنتجات ، وتكمن اهمية البحث في التعرف على اهم الاستراتيجيات المتبعة من قبل المصممين لتلبية حاجات ورغبات المستهلكين بتفوق ونجاح ، اما هدف البحث فيكون من خلال بيان مدى تأثير استراتيجيات الابداع والابتكار في امكانية طرح منتجات جديدة للاسواق ، فضلاً عن ا

The present study deals with the websites of Iraqi political parties on the internet to identify the effectiveness in providing communicative applications that help audience to participate, express their opinions, their positions, and other aspects reflecting the extent of employing modern technological tools to allow opportunities for political, and democratic participation since the internet has become an effective tool for political communications of political parties. The research sample includes eight political parties. The research concludes that the Iraqi political parties do not employ interactive communication patterns to reflect their interests in communicating with the public, providing opportunities for their participation an

    A signature is a special identifier that confirms a person's identity and distinguishes him or her from others. The main goal of this paper is to present a deep study of the spatial density distribution method and the effect of a mass-based segmentation algorithm on its performance while it is being used to recognize handwritten signatures in an offline mode. The methodology of the algorithm is based on dividing the image of the signature into tiles that reflect the shape and geometry of the signature, and then extracting five spatial features from each of these tiles. Features include the mass of each tile, the relative mean, and the relative standard deviation for the vertical and horizontal projections of that tile. In the clas

Modern manufacturing enterprises are increasingly faced with fierce international competition and fluctuating market conditions. To gain flexibility from a functional manufacturing system and efficiency from mass production, group technology has emerged as an effective compromise between the two. Identification and grouping of parts, that share similar processes into cells, is the basic problem in the design of cellular manufacturing systems. The design of cellular manufacturing systems is a complex, multi- criteria and multi -step process which can have significant implication for the entire organization. The formation of machine cell and part families have a number of constraints such as number of cells, cell size, technological requir

  The aim of this work covers the synthesis and characterization of the new tertra dentate ligand (H4L) containing (N and O) as donor set atoms kind (N2O2) where: H4L=Bis-1,2 (2,4dihydroxybenzylediene phylinediamine . The preparation of ligand contains reaction 2, 4 Dihydroxy benzaldehyde and o-phenylene diamine . Schiff base was reacted with some metal ions in the presence of methanol to give the complexes in the general formula  [M (H2L)] where: MII = Co, Ni, Cu, Zn, Cd. All compounds were characterized by spectroscopic methods I.R , U.V.-Vis, metal content and molar conductivity measurements, showed that the complexes are non-electrolyte. The proposed geometry for all of the proposed complexes was a tetrahedral while Ni comp

Back ground: Inadequate secretory transformation of the endometrium resulting from deficient ovarian progesterone secretion is a cause of infertility and recurrent abortion
in luteal phase defects (LPD) women. LPD are diagnosed in 20% of infertile patients and 60% of patients with recurrent abortion and 50% of anovulatory women.
Aim : The objective of the present study was to compare pregnancy outcome following sperm penetration assay (SPA), intrauterine insemination (IUI) and luteal support
therapy (LST) in infertile patients with unexplained infertility (UI) mild and marked LPD.
Materials and Methods: Men with normal semen analyses and positive sperm penetration assay scores were included in this St

Back ground : Coronary artery diseases are not uncommon in the presence of right bundle branch block.
Aim : The aim of this study is to assess the findings of coronary angiography in patients with chest pain and right bundle branch block.
Methods : The study involved review of case sheets and coronary angiography of one hundred patients, who underwent coronary angiography due to chest pain suspected to have
coronary artery diseases (CAD) , fifty patients of them had right bundle branch block (RBBB) , the other fifty did not have RBBB , those 100 patients were presented to Ibin Al Bitar hospital
for cardiac surgery from January 2004 to June 2006. History, clinical examinations, electrocardiogram (ECG)