Air pollution is one of the complex problems plaguing the environment at the present time
as a result of many liberation of gases, vapors and fumes of fuels and chemicals resulting
from industrial activities . It should be noted that there are some elements of the heavy
(Heavy Metals), including toxic in the air, with different concentrations in the air depending
on the nature of the area, for example be in rural areas is lower than in cities or industrial
areas as measured parts million (ppm ) or parts per billion (ppb). Some of these important
elements in the physiological processes and enzymatic organisms but become toxic and
Qatlhand-increase Tercisahaan the permissible limits Bhave nature ,The air contaminant

Background: This in vitro study evaluated the effect of canal dryness and flaring on the accuracy of two electronic apex locators for working length (WL) determination. Materials and methods: Sixty extracted teeth were used, after access opening was done, the occlusal surface was flattened to create stable reference point. The teeth were randomly divided into two equal main groups of flared and unflared group each one of 30 teeth. The flaring was done with Gates Glidden drills. The two main groups were further subdivided into two subgroups: dry canal and wet canal using 5.25% sodium hypochlorite groups, Electronic WL of each sample was determined using both Root ZX and i-Root apex locator. Consequently, histologic WL was determined by shav

A sensitive, accurate, and affordable colorimetric method was developed for assaying prednisolone (PRZ) in various medicinal forms. The procedure involves the oxidation of PRZ by ferric ions, followed by complexation of the resulting ferrous ions with ferricyanide to produce a greenish-blue product. Common complexation conditions were thoroughly investigated. The mole ratio of FeCl₃·6H₂O to K₃Fe(CN)₆ was 8:1. The proposed mechanism of complexation was suggested and considered. Various parameters were optimized, including the reduction of the colorimetric reaction temperature to 50°C and the duration of heating and analysis to 20-30 minutes. The calibration curve was linear over the range of 1-60 µg/mL. The limit of detection (LOD

Most of the big companies and especially the intillictual ones become a ware of an important fact, and That is, The intillictual capital in new global economy, is a new source for Them & This Valuable source exceed in importance. The other company's sources.

The Traditional disclouser systemes are unable to supply the decisions makers with the Fundimental information require to handel the on going operations which are based on Knowledge and intangible source. But the measuring of this source and the disclose for it in the financial Statements will lead to gain features Statements which will benefit all the parties and lead to make the value of the company great.

And as a resul

 

شمل تضمنت الدراسة خمسة أبواب :الباب الأول : تضمن المقدمة وأهمية البحث و تم التطرق فيها إلى أهمية حساب الطاقة المصروفة خلال فترات العمل على الحزام المتحرك الذي يستخدم من الاغلبية رياضيين أو غير الرياضيين . إما الباب الثاني تضمن مواضيع الدراسات النظرية ومنها ( الشغل ، والحزام المتحرك ، والطاقة ) ، في حين أحتوى الباب الثالث على منهج البحث إذ تم استعمال المنهج الوصفي لملامته طبيعة المشكلة بينما عينة البح

The research aims at the identity of the accounting information and its characteristics, and then to study the possibility of using accounting information in rationalizing the decisions of capital expenditure. The study relied upon the descriptive analytical approach it is suitable to the nature of this study, the hypotheses of the study were tested by using a number of statistical methods by relying on statistical package program (SPSS), and the research concluded that the companies listed in Khartoum Stock Exchange using accounting information in the comparison between investment alternatives available and estimating the number of years required to recover of the investment cost, the challenges that cause weakness in using the

Many pathophysiological processes can affect the pharmacokinetic properties of drugs in people with diabetes. The present study was deigned to evaluate the influence of diabetes mellitus (DM) on the pharmacokinetic parameters of metronidazole administered as single oral dose. Twelve healthy volunteers and twelve diabetic patients were enrolled in the present study. On day 1, a single oral dose of metronidazole 500 mg was administered orally to all participants at 9:00 am after a 10-hour fasting. Over the following 48 hours, blood samples were taken at frequent intervals and serum metronidazole concentrations were measured by a high-performance liquid chromatography method for assessment of pharmacokinetics of metronid

  To identify the importance of the role of succession planning in developing human capital in organizations in light of the accelerating and dynamic events and changes in the work environment, and the research problem indicated the seriousness of employees retiring or leaving their positions for any reason and the extent of its impact on the organization in creating gaps in leadership and problems In managing the talent injection because there will be a shortage of talent, which in turn will affect the general performance of the business in the researched institute, so the importance of research appears in trying to present a set of solutions through which some of the problems facing the organization in quest

The purpose of this research is to highlight the relationship between the   administrative investigation and the improvement of institutional performance, and the research sought to achieve a set of cognitive and applied goals. the administrative investigation is the modern trend of managing the offices of the general  hginspectors and the main source to build the necessary standards to manage and invest its resources efficiently and effectively required to achieve the goals it seeks. The institutional performance is the cornerstone for the implementation of all tasks and duties carried out by institutions operating within the borders of a particular country, The significant change

Background :Alkaline phosphatase (ALP) was a widely used marker for skeletal and hepatobiliary disorders, but its activity was also increased in atherosclerosis and peripheral vascular disease. Several study has showed that ALP activity was increased in the sera of diabetic patients. The current study was conducted to evaluate ALP activity in type 2 diabetic patients and optimum conditions for enzyme activity in their sera.Methods: This study was carried out at in AL-Yarmok hospital(diabetic center) between February /2009 and April /2009. Fifty two patients with type 2 diabetes have been enrolled. Besides BMI, WHR, serum fasting blood glucose, ALP, HbA1C,uric acid and lipid profile levels have been performed .The relationship bet

Background : Polycystic ovary syndrome (PCOS) is the most common cause of infertility in reproductive-age women , it is an important harbinger of metabolic disorders. It has been reported that hyperamylasemia can be used as marker of ovarian cancer patients . The current study was conducted to evaluate amylase activity and to estimate the correlation of this enzyme with insulin and insulin resistance in PCOS patients. Methods: This study was conducted on forty five patients with PCOS in comparison to twenty five women as control. Fasting blood sample was taken from each subject and analyzed for amylase activity , FSH,LH, Insulin , proteins, and blood sugar , meanwhile insulin resistance was determined by HOMA-IR index. Results: The result

Polyethylene (PE) waste is both an environmental threat and a chance for innovation in pavement engineering. This review examines low-density (LDPE) and high-density (HDPE) PE as asphalt modifiers, outlining their influence on binder performance, mixture properties, environmental gains, and economic viability. Drawing on laboratory studies and field trials, it compares PE types, dosages, and mixing methods. PE raises the binder’s softening point, viscosity, and elasticity, while reducing penetration and ductility. In mixtures, it can lift Marshall stability by up to 167%, cut rut depth by about 70%, and raise tensile strength by 30%. HDPE usually delivers the bigger mechanical boost thanks to its higher crystallinit

This research investigates the influence of momentum and liquidity factors on stock returns in the Iraq Stock Exchange, employing the six-factor Fama-French model and enhancing the analysis with sophisticated machine learning techniques, including Random Forests. This research seeks to address deficiencies in prior studies by implementing an integrated model within the Iraqi market context, which is under-researched in the context of multi-factor asset pricing models. A quantitative analytical approach was applied to a sample of 10 companies listed on the market from 2014 to 2023. The findings indicate that the random forest model markedly outperforms conventional regression models, elucidating 72% of the variance in stock returns and at

This paper has presented a simulation-based framework for analyzing supply chain reliability under uncertainty, supported by a comprehensive literature review, theoretical grounding, and a real-world case study. The main contribution lies in demonstrating how simulation modeling — particularly hybrid approaches — can capture the complex dynamics of modern supply chains and provide decision-makers with practical tools for stress-testing, scenario planning, and reliability enhancement.

This study aims to evaluate supply chain reliability under uncertainty by integrating simulation and probabilistic modeling. The purpose is to investigate how disruptions in supply, demand, and logistics affect performance indicators such as servi

يشخص البحث دور القيادة التشاركية في تعزيز الاستبصار الاستراتيجي في المديرية العامة لتربية الرصافة الاولى

This study aims to analyze the mediating role of strategic planning in the relationship between zakat compliance and institutional performance in the General Authority for Zakat in Yemen, filling a research gap in fragile environments (Bin-Nashwan et al., 2021; Bryson, 2018).  The study employed a quantitative descriptive-analytical approach using a questionnaire as a key tool which was distributed to all administrative and functional leaders in the Authority and its branch in the capital, Sana'a, totaling 515, thereby representing a comprehensive survey of the research community. A total of 417 questionnaires were received. However, 398 were valid for final statistical analysis. The data were analyzed using SPSS v24 and PLS-SEM softwar

Genetic material is the most important component of cells because it contains the genetic information; hence any disruption to the structure chromosome of cells could lead to very bad results. Genotoxicity use to evaluate the safety of any chemical compounds on genetic materials. Artificial food flavoring additive are chemical substances to produce specific placebo effects added to foods but impart specific flavor to it.

The present study evaluates the genotoxic effect of artificial food flavoring additive on structure of chromosomes at three different concentrations (50%, 100%and 150%) on both bone marrow cells and spleen cells in mice for fourteen successive days. It was found that artificial food flavoring addit

إن التطور الهائل في منظومة تكنولوجيا المعلومات والاتصالات في العالم , أثر كثيراً في الجوانب الحياتية والاجتماعية والاقتصادية والسياسية والثقافية عامة والتربوية والتعليمية خاصة, إذ أصبح لها دور كبير في تسيير الكثير من الأمور. ولا بد من القول ان المؤسسات والمنظمات لا يمكن ان تنتقل من القرن العشرين الى القرن الحادي والعشرين إلا إذا أفادت من تكنولوجيا المعلومات والاتصالات, إذ توافر هذه التكنولوجيا الكثير من ال

الخلفية: الرهاب الاجتماعي شائع بين المراهقين ويؤثر سلبا على ادائهم المدرسي.

الهدف: دراسة انتشار الارهاب الاجتماعي بين طلاب المدارس الاعدادية وتأثيره على الاداء المدرسي

الطرق: شملت الدراسة 500 طالب وطالبة من المدارس الاعدادية في بابل، تم اختيارهم بطريقة عشوائية. وتم استخدام استبانة SPIN لتحديد الارهاب الاجتماعي. والرسوب والنجاح في الس

The Rose Bengal test is one of the famous diagnostic test of Brucellosis
specially as a screening test in order to detect the infection in limited area.
Rose Bengal standard stain which producd by specific companies was used in
preparation of the test special antigen , The stain gives the known pink colour
for the antigen during the test that make the agglutination in positive cases more
visible due to the reaction between antigen and the specific antibodies of
Brucella which found in the serum sample of human and different animals.
Antigen for the Rose Bengal test in this study is prepared by using alternative
stain easily found in local supermarkets using for food colours and not
expensive like standard stain

مقدمة: يعتبر فايروس التهاب الكبد –ب من أهم  العوامل المسببة لامراض الكبد الحادة والمزمنة حول العالم مسببا امراضية ووفيات عالية. ان التنوع الجيني العالي لفايروس التهاب الكبد-ب انعكس بوجود ثمانية انواع جينية (أ-د) مع خصوصية بالانتشار الجغرافي.

الهدف: أجريت الدراسة لمعرفة الانواع الجينية لفايروس التهاب الكبد –ب في الحاملين المزمنين للفايروس مع دراسة العلاما

      Grammatical particles are so important in understanding a text and its meaning in linguistic context. This paper  " Grammatical Behavior and Uses of Negative and Prohibitive Particles in Semitic Languages: A Comparative Semitic Study"

      tackles  a very important topic in Semitic languages. Comparative studies in Semitic languages shed light on  phenomena in different languages that are related or have one common origin. No doubt, such studies have their own effects on language study in general especially when studying a specific phenomenon and explaining it by reliance on the one origin, or by investigating the various phases of its historical development.

Background: The denture base inaccuracies during processing negatively influence the retention and stability of finished complete denture. The aims of this study were to evaluate teeth movement and palatal adaptation of autoclave cured denture bases and their relationship with palatal depths and investments. Materials and methods: A nightly maxillary complete dentures prepared, processed and organized to be tested as follows: 1. Processing methods: water bath and autoclave with both fast and slow cycles. 2. Palatal depth: shallow, medium and deep. 3. Investing medium: stone and silicone. For every finished denture, two measurements were done: first: teeth movement by attaching metallic reference screws on the right and left centrals, first

The problem for the search to identify the role of loyal workers through (emotional loyalty, moral loyalty, continued loyalty) in enhancing the market share of the corporate center the human resource management strategies, namely (selection, training and development, and performance evaluation, and returns the system) for the parent company of cellular Allotsalat in Baghdad ,, and show the importance of research through the benefit to the company, through the importance of the search results, it draws the attention of decision-makers and those in charge of managing these human resources on the importance of those resources and work to develop them and keep them in order to increase their loyalty towards their organization and the

The study used the optical emission spectroscopy method to present the effect of changing doping ratios and laser energy on plasma parameters. Plasma spectra were acquired across energy levels by zinc oxide combined with nickel oxide (ZnO_X: NiO_1-X) at x = 0.3, 0.5, and 0.7. The analysis of these airborne mixtures was carried out through the application of spectroscopy. The electron temperature results indicated that the range for x=0.3 was 0.446-0.491 eV, for x=0.5 was 0.470-0.486 eV, and for x=0.7 it was 0.474-0.489 eV. Differences in electron temperatures between compositions can lead to new technological applications and comprehension of physical phenomena. It was found that when the proportion of doping was incr