Preferred Language
Articles
/
alkej-650
Adsorption of Heavy Metals from Aqueous Solution onto Sawdust Activated Carbon
...Show More Authors

In this study, sawdust as a cheap method and abundant raw material was utilized to produce active carbon (SDAC). Physiochemical activation was utilized where potassium hydroxide   used as a chemical activating agent and carbon dioxide was used as a physical activating agent. Taguchi method of experimental design was used to find the optimum conditions of SDAC production. The produced SDAC was characterized using SEM to investigate surface morphology and BET to estimate the specific surface area. SDAC was used in aqueous lead ions adsorption. Adsorption process was modeled statistically and represented by an empirical model. The highest specific surface area of SDAC was 688.3 m2/gm. Langmuir and Freundlich isotherms were used to fit the adsorption process, where equilibrium data was best represented by Langmuir isotherm model.  Pseudo-first order and pseudo-second order equations were used to study adsorption kinetics, lead adsorption on SDAC fitted pseudo- second order more adequately. Best removal efficiency was found to be 99.63% with highest adsorption capacity of 19.92 mg/g.

 

View Publication Preview PDF
Quick Preview PDF
Publication Date
Thu Jun 19 2025
Journal Name
Journal Of Baghdad College Of Dentistry
Antibacterial effects of mineral trioxide aggregate and Biodentine TM after the addition of different concentrations of black seed aqueous solutions
...Show More Authors

Background: Mineral Trioxide Aggregate (MTA) and BiodentineTM cements are new materials with numerous exciting clinical applications. Both have appreciable properties which include good physical properties and the ability to stimulate tissue regeneration as well as good antibacterial effects. The aim of this study was to investigate and compare the antibacterial effects of MTA and BiodentineTM, when they were mixed with different concentrations of aqueous solutions of Black Seed extract, against Enterococcus faecalis. Materials and methods: MTA and BiodentineTMwere prepared according to the manufacturer’s instructions. The method of Mawlood was followed to prepare the Black Seed aqueous solution. Agar diffusion method on Brain Heart

... Show More
View Publication Preview PDF
Publication Date
Fri Mar 01 2024
Journal Name
Baghdad Science Journal
On Existence of Prime K-Tuples Conjecture for Positive Proportion of Admissible K-Tuples
...Show More Authors

Number theorists believe that primes play a central role in Number theory and that solving problems related to primes could lead to the resolution of many other unsolved conjectures, including the prime k-tuples conjecture. This paper aims to demonstrate the existence of this conjecture for admissible k-tuples in a positive proportion. The authors achieved this by refining the methods of “Goldston, Pintz and Yildirim” and “James Maynard” for studying bounded gaps between primes and prime k-tuples. These refinements enabled to overcome the previous limitations and restrictions and to show that for a positive proportion of admissible k-tuples, there is the existence of the prime k-tuples conjecture holding for each “k”. The sig

... Show More
View Publication Preview PDF
Scopus Crossref
Publication Date
Wed Mar 16 2022
Journal Name
Journal Of Educational And Psychological Researches
The Effect of Rational Emotional Visualization Style in Reducing Fear of Failure among Athletes
...Show More Authors

The research seeks to design a program of guidance in the form of emotional perception rational to reduce the fear of failure, to identify the effect of method of emotional perception rational in reducing the fear of failure. To achieve these objectives, the researcher adopted the null-hypotheses, which assume there are no statistically significant differences in the degree of fear of failure (for the control group) in the pre-posttest. There are no statistically significant differences in the fear of failure (for the experimental group) in the pre-posttest. There were no statistically significant differences in the fear of failure of the groups (experimental and control) after the application of the program in the post-test. In order to

... Show More
View Publication Preview PDF
Publication Date
Tue Feb 05 2019
Journal Name
Journal Of The College Of Education For Women
A study of Nutritional and Chemical Content in One Kind Chamomile Tea for Infant and Children
...Show More Authors

This study has been performed for knowing the nutritional and chemical content of one kind chamomile tea for infant and children available in the pharmacy. The results have been showed that the percentage of essential compounds which represented with moisture, protein, fat, carbohydrate, ash and calories as 7.09%,0.01%,0.01%,92,81%, 0.08% and 371,37 Kal./100g, respectively of dry weight. Also the results have been showed that the percentage of chamomile plant extract that added to the tea as 5.74%. And the result of chemical test for effective materials in alcoholic extract showed consist Tannis, Glycosides, Flavonoids, Alkialoids,and Resins.

View Publication Preview PDF
Publication Date
Fri Dec 22 2006
Journal Name
Journal Of Planner And Development
The productive partnership in development communication is an effective strategy for change
...Show More Authors

This study can be considered as un introduction to the idioms and the strategy about the productive partnership development connection, that helps the researcher and the organization in their work in to activate development and the natural sources,manegment,to improve the two sides active connected to the local society, and to use it as easier and smoother participation of the people who work in development field and the natural sources management research, That connection depends mostly upon the capability of researcher and the development worker to increase the ability of individual and local society to specify and analyzing their problems and to try solutions to make their life better with good income.   

View Publication
Publication Date
Sun Jan 30 2022
Journal Name
Arab Science Heritage Journal
القيم الاخلاقية في الاعمال الوظيفية من خلال الآيات القرآنية
...Show More Authors

God Almighty sent down the Noble Qur’an to guide people in all areas of their lives, including the field of functional business.

View Publication Preview PDF
Crossref
Publication Date
Sun Oct 08 2023
Journal Name
الدراسات اللغوية والترجمية/translation Studies In Bait Al-hikma
Translating adjectives into Arabic in Chekhov’s story -ward No.6
...Show More Authors

Chekhov is well known and perceived in Arab countries. His stories and plays are very popular. They translated it into Arabic by different translators from different languages of the world Many of his stories require new translation solutions to achieve partial, if not complete, equivalence. Chekhov's works are a very difficult subject to analyze and interpret, which is explained by the fact that Chekhov's collections are constantly republished in foreign languages. It is impossible to preserve in translation all the elements of the original text containing historical and national details but, of course, the reader should have the impression that they represent the historical and national situation. When translating, it makes sense to prese

... Show More
Preview PDF
Publication Date
Wed Mar 22 2017
Journal Name
مؤتمر الاعتدال الوطني
السيد محمد بحر العلوم من رواد الاعتدال الديني والسياسي
...Show More Authors

View Publication Preview PDF
Publication Date
Sun Jan 13 2019
Journal Name
Arab Science Heritage Journal
عزل بعض الجراثيم المرضية المشتركة من الأغنام العواسية المحلية
...Show More Authors

استهدف البحث الحالي عزل بعض الجراثيم المرضية المشتركة وشملت Listeria monocytogenes و Salmonella spp. و Brucella abortus من أنسجة أعمار مختلفة من الأغنام العواسية المحلية . أخذت عينات من الكبد والكلى والدم ومن محتويات منتصف أمعاء ثلاث مجاميع عمرية من الأغنام العواسية من مجزرة الشعلة ببغداد شملت أعمار اقل من سنة واحدة وسنة إلى سنتين وأكثر من ثلاث سنوات . بينت النتائج عزل جراثيم Listeria monocytogenes  و Salmonella spp. و  Brucella abortus من كافة المجاميع

... Show More
View Publication Preview PDF
Publication Date
Wed Sep 08 2021
Journal Name
Journal Of Accounting And Financial Studies ( Jafs )
Strategic tax planning and its impact on reducing tax evasion
...Show More Authors

Taxes are an essential axis in the economy as the most effective and effective economic tool in any country (economy). Expanding the scope of taxation without adequate study has produced a dangerous result with a negative impact that is almost apparent, namely (tax evasion), which stands as a barrier preventing the state from reaching Therefore, the research sought to study strategic tax planning and its importance in reducing tax evasion, and the research aims from that to prove the importance of adopting strategic planning in the field of taxes according to modern and effective scientific foundations to reduce tax evasion to enhance the achievement of tax evasion. The financing objective is in addition to the other objectives,

... Show More
View Publication Preview PDF