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Heat Transfer and Hydrodynamic in Internal Jacket Airlift Bioreactor with Microbubble Technology
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   Integration of laminar bubbling flow with heat transfer equations in a novel internal jacket airlift bioreactor using microbubbles technology was examined in the present study. The investigation was accomplished via Multiphysics modelling to calculate the gas holdup, velocity of liquid recirculation, mixing time and volume dead zone for hydrodynamic aspect. The temperature and internal energy were determined for heat transfer aspect.

   The results showed that the concentration of microbubbles in the unsparged area is greater than the chance of large bubbles with no dead zones being observed in the proposed design.  In addition the pressure, due to the recirculation velocity of liquid around the draft tube, increased the retention time of microbubbles in the same area.  

   Thus it was expected that their effect on mass and heat transfer phenomena would be positive for biological applications. For example the gas fraction volume of microbubble in the downcomer region is 0.0063, while with fine bubble diameter of 1 mm, this region was free from any bubble. Furthermore, the velocity of liquid in the center of ring diffuser would be 0.175 m/s, if the sparging system operated with bubble diameter of 100 micrometer, whilst would be 0.035 m/s with fine bubble diameter of 1 mm.

   The study also proved the importance of bubble diameter on the heat transfer in gas and liquid phases in the proposed design. Microbubbles gave greater responsiveness to stability and homogeneity in all parts of the bioreactor. Finally, this study concluded the efficiency of the proposed design with the microbubbles technology thermally and hydrodynamically.

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Publication Date
Wed Mar 23 2022
Journal Name
Journal Of Educational And Psychological Researches
School Principals’ practices of servant leadership from teachers’ perspectives in basic education schools in the Sultanate of Oman
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The study aimed to explore the school principals’ servant leadership practices for primary teachers’ perspectives in the Sultanate of Oman, furthermore to investigate the differences in those practices attributable to variables (gender, qualification, educational stage, years of experience, governorate). The study relied on the descriptive approach, by employing the survey research design using the questionnaire as a main tool for data collection, which included five dimensions of servant leadership (altruism, humility, enhancing teacher development, emotional healing, commitment to community development), Data collected from (1094) teachers in basic education schools, and they were chosen randomly. The results of the study indicated

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Publication Date
Sun Mar 01 2020
Journal Name
Journal Of Accounting And Financial Studies ( Jafs )
The Effectiveness of Quantitative Instruments in Controlling Money Supply: An Applied Research in the Central Bank of Iraq
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This research deals with the role of quantitative (indirect) tools of monetary policy that used by the Central Bank of Iraq in order to control and manage the size of the money supply that intermediate goal through which monetary policy is able to achieve its final goals, foremost among which is to reduce inflation and raise the value of the local currency in front of foreign currency rates. The research is based on a major hypothesis stating that quantitative tools have a direct and strong influence on the money supply, especially under the circumstances of the shift towards a market economy. There has been a branching relationship with this statistically significant relationship between the money supply and the quantitative tools used

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Publication Date
Wed Apr 10 2019
Journal Name
Iraqi Journal Of Market Research And Consumer Protection
QUALITY SYSTEMS.POSSIBILITY OF IMPLEMENTING IN SOME LOCAL FOOD ESTABLISHMENTS: QUALITY SYSTEMS.POSSIBILITY OF IMPLEMENTING IN SOME LOCAL FOOD ESTABLISHMENTS
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In order to have an idea about what happens in Iraqi food establishments in relation to implement quality management system ISO 9001, this study was performed to show the actual situation of Iraqi food establishments concerning quality management system (ISO 9001:2015), reasons of implementing, factors that hinder implementing and problems faced high administration for getting establishments certification ISO 9001:2015. The study demonstrated from the questionnaire some difficulties to implement ISO 9001 for both of establishments that implemented the quality system or which in implementing of this international standard. The most important problems during implementing were business culture and costs and the most important proble

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Publication Date
Sun Feb 03 2019
Journal Name
Journal Of The College Of Education For Women
The Moral Scale In Poetry Selections Al-Ihata Book: The Moral Scale In Poetry Selections Al-Ihata Book
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Abstract:
Ibn al-Khatib valuable Mokhtarath poetry as a moral standard that writer
committed to the conscious function of art, and believing that the place
literature is determined standards of literary and alone is a (complete criticism
from a moral stance) was adopted by the evidence of a professional image
analogy and metaphor, and metaphor and the antagonism of the expression
of all ideas put forward is consistent with the internal rhythm arts Bdieip
consistent with the method Bhawwarith and clarity of language structure and
carried Petrakebha multiple form of expressionism. Ghani, who contrast
abstraction and its proximity to the Forum staff readily near the sensory data,
and the religious impact of the

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Publication Date
Sun Jan 01 2012
Journal Name
Turkish Journal Of Medical Sciences
Histopathological effects of S. xylosus peptidoglycan in comparison to E. coli lipopolysaccharide in the urinary tract of mice
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he present work, among other previous studies done in our lab, aimed to highlight the histopathological effect of S. xylosus peptidoglycan in comparison to LPS of E. coli. Materials and methods: One hundred and fifty urine specimens were collected from urinary tract infection patients visiting Baghdad hospitals. The histopathological effects of S. xylosus S24 peptidoglycan was studied in the urinary tract of female mice by injecting 5 animal groups at the following concentrations: 1000, 2000, 3000, 4000, and 5000 µg/mL. Another 5 groups were injected with 10, 25, 50, 75, and 100 ng/mL of E. coli (serotype 0128:B12) LPS. Results: Ten isolates were confirmed to be Staphylococcus xylosus. Histopathological study showed different pathological

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Crossref
Publication Date
Sun Jun 01 2014
Journal Name
Journal Of Accounting And Financial Studies ( Jafs )
easurement & Analyses costs of quality& effect in strategic performance: An Application research in construction industry– Saad public company
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Many economic entities working in multiple industrial fields suffer fromlow techniques in using modern administrative means in their works. The mostused tool in measuring required procedures is to adopt and use quality costs. inspite of complications and bronchial of operations in construction projects, Theresearcher was able to find a structure to quality costs according to traditionclassification (prevention, Appraisal, failure) which enables the calculation ofthese costs and then analyze results and setting standards which can beimplemented in evaluating strategic performance for targeted project. and theforge research in theoretical fly to quality and costs concerning it inconstruction section , as well as strategically performance a

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Publication Date
Sun Mar 06 2011
Journal Name
Baghdad Science Journal
Study of opacity broadening in spectral lines for helium like ions in aluminum plasma which produced by laser
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A theoretical analysis studied was performed to study the opacity broadening of spectral lines emitted from aluminum plasma produced by Nd-YLF laser. The plasma density was in the range 1028-1026 )) m-3 with length of plasma about ?300) m) , the opacity was studied as function of plasma density & principle quantum number. The results show that the opacity broadening increases as plasma density increases & decreases with the spacing between energy levels of emission spectral line.

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Crossref
Publication Date
Wed May 04 2016
Journal Name
Journal Of Sport Sciences
The Effect of Competitive Learning Strategy in Developing Mental visualization of some Basic Skills in Basketball for Students
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IRA Dawood, JOURNAL OF SPORT SCIENCES, 2016 - Cited by 3

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Publication Date
Mon Nov 02 2020
Journal Name
International Journal Of Pharmaceutical Research
Evaluation of Serum Adropin Levels in Nonalcoholic Fatty Liver Disease as A Complication of Hypothyroidism In Iraqi Patients
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Scopus Crossref
Publication Date
Thu Feb 07 2019
Journal Name
Journal Of The College Of Education For Women
The impact of a practical treatment program in enabling victims of bullying in a sample of 6th graders
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This study was aimed to explore the impact of a practical program on supporting and reducing
symptoms of school bulling victims in a sample of student in the sixth grade. The study sample consisted of (18)
students that have been chosen from two schools (Al-Abass and Alataa’) it was an intended sample, because
there were enough student with high scores in bulling victims diagnostics test, the sample was divided into two
groups: the control group of (9) student from (Alataa’) school, and the experimental group consisted of (9)
student from Alabass) school keeping in mind to keep the two groups equivalent in maintaining equal controls.
The researcher applied the practical program which is based on cognitive behavioral

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