Subscribe to the gold package and get unlimited access to Shamra Academy
Register a new userBacterial Distribution Analysis in the Atmospheric Air of the Primary and Secondary Schools
تحليل التوزيع البكتيري في الهواء المحيط بالمدارس الابتدائية و الثانوية
1094
0 2
0
(
0
)
Created by
Shamra Editor
Ask ChatGPT about the research
تمت دراسة تحليل التوزيع البكتيري للهواء المحيط داخل الصفوف لست عشرة مدرسة ثانوية وأربع عشرة مدرسة ابتدائية في مدينة إب باليمن للفترة بين فبراير إلى مايو/ ٢٠٠٢ أشارت النتائج إلى أن معدل نسب البكتيريا النامية على وسط الدم المغذي الصلب قد شكلت أعلى التراكيز، و تبعته تلك التي نمت على الوسط المغذي الصلب، و أخيرًا تلك التي نمت على وسط الماكونكي الصلب. كان معدل أعداد البكتيريا النامية على وسط الدم الصلب في الفصول من دون تهوية، و ذات التهوية المتوسطة، و التهوية الجيدة ٢٤٦ ،٢٦٩ ،٤٩٢ وحدة مكونة للمستعمرة/ ٥٠ لترًا من الهواء. أظهرت المدارس الابتدائية تراكيز أعلى للبكتيريا مقارنة بالمدارس الثانوية. كانت أعداد البكتيريا داخل الفصل الدراسي أعلى مما هو عليه في باحة المدرسة. على الرغم من تقارب نسبة الطلاب إلى مساحة الفصل، لوحظ أن أعداد البكتيريا تناسبت عكسيًا مع حجم الفصل.
Bacterial distribution analysis of the atmospheric air of fourteen primary and sixteen secondary school classes at Ibb City in Yemen was performed during the period between February and May, ٢٠٠٢. The results indicated that bacteria grown on the blood agar formed the highest numbers, followed those grown on nutrient agar, and finally on MacConkey agar. The average number of blood agar grown bacteria in nonventilated, semi-ventilated, and well--ventilated school classes were ٤٩٢, ٢٦٩, and ٢٤٦ cfu/٥٠ liters of air sample respectively. Primary schools showed a higher values of bacterial counts, compared to the secondary schools. The concentration of the bacteria inside the school classes was higher than those of school square. Inside the classes, in spite of approximate values of student per unit area, i.e. ٠,٦٤m٢, the total number of bacteria per cubic meter was observed to be inversely proportional with the class volume.
References used
May, K.R. (١٩٦٧). Physical aspects of sampling airborne microbes. In: Gregory, P.H. & Monteith, J.L. (eds). Airborne microbes. ١٧ th Symposium of the Society for General Microbiology. Cambridge University Press, Cambridge
Greenwood, D. Slack, R., & Peutherer, J. (eds) (١٩٩٧). Medical Microbiology, ١٥th edn. Churchill Livingston, Edinburgh
Collee, J.G., Fraser, A.G. Marmion, B.P., & Simmons, A.S. (eds) (١٩٩٦). Practical Medical Microbiology, ١٤th edn. Churchill Livingston, Edinburgh.
rate research
Read More
This study is concerned with the variations in annual and seasonal surface
air temperature in Syria, depending on the data from 12 different
meteorological stations in Syria.
The analysis of surface temperature trends was performed using Least
sq
uares (linear regression) and Moving- averaging filters according to
Gaussian low- pass filter.
Fast Fourier Transformation was used for the analysis of periodicity for the
annual mean surface temperature.
The results of linear regression showed that the general trend of annual and
seasonal temperature in all stations was positive except Latakya.
The results of annual and seasonal temperature, fluctuations revealed the
existence of important warming period in all stations starting from 1993-1994
for the average of annual and winter temperature while summer, autumn and
spring temperatures averages were above the mean during the study period.
Periodicities analysis showed that the surface air temperature seems to be
affected by solar cycle and quasi- biennial oscillation as well as the El-nino
southern oscillation.
The purpose of this research is to know the reality of the use of educational
techniques and laboratory devices in secondary vocational schools in Lattakia
Governorate, The research adopted descriptive analytical method through a questionnaire
con
sisting of (50) words distributed on four axes, has been verified the validity and
stability through appropriate statistical methods, And then applied to the study sample
which consisted of (127) teachers, assistant teachers and vocational teachers in a number of
vocational secondary schools in Lattakia Governorate during the second semester of the
academic year (2016-2017), The most important findings of the research:
-The degree of ownership of the competencies of the use of educational techniques
and laboratory devices in vocational schools and the degree of use of these techniques and
devices medium.
-The degree of obstacles to the use of educational techniques and laboratory devices
in vocational schools and the degree of requirements for the development of this use is
high.
- There were no statistically significant differences in the identification of the reality
of the use of educational techniques and lab equipment in secondary vocational schools in
Lattakia Governorate according to the variables of the place of study and the job title.
- There were statistically significant differences in the possession of competencies in
the use of educational techniques and laboratory devices in vocational schools and the use
of these techniques and devices according to the variable training courses for those who
followed one or more courses. There were no differences regarding the obstacles of using
educational techniques and laboratory equipment in vocational schools.
The research concluded with a set of proposals aimed at developing the use of
educational techniques and laboratory equipment in vocational secondary schools in
Lattakia Governorate.
The purpose of the research is to identify the reality of the transformational
leadership in the general secondary schools in Damascus, and the suggestions for
activating its application from the point of view of the teachers. The researcher design
ed a
questionnaire consisting of (28) items divided into five axes. After being verified and
validated, (220) members of the administrative staff, and (347) members of the teaching
staff, and after the necessary statistical treatments, the research showed results, the most
important of which are the following:
- The average score of secondary school principals for transformational leadership
(2.56), ie average grade.
- There were no statistically significant differences between the average degree of
principals of secondary education for transformational leadership according to the
variables: years of experience, scientific qualification and gender of the sample members.
- There were no statistically significant differences between the average responses of
the members of the administrative body, and the average responses of faculty members on
the reality of transformational leadership.
- - Appreciating the efforts of the employees, providing them with incentive
incentives, and setting up training courses for managers in the field of transformational
leadership are the most important proposals of the sample to activate the application of
transformational management in secondary education schools.
A total of 370 bottles of noncarbonated natural mineral water (domestic and
imported) with different bottling dates, were collected directly from the
markets in Syria one word one year 2006.
Bacterial diversity was approached with tentative
identification of the strains isolated using biochemical and enzymatic criteria
(with the aid of API 20 NE identification system for nonfermenters).
This piece of research analyzes the general-index change of annual medium temperatures in some stations of the Syrian Coast during the years 1970-2010, so as to identify the amount of change in temperatures and the effect of such a change on the prob
able density that results in annual medium temperatures that are both extreme and unnormal.
Results point to an increase in temperatures in all those stations between 0.8 and 2 Celsius degrees. This increase is significant statistically. At the same time, temperatures had not gone lower than their general average in all those stations during the first decade of the 21st century, contributing to an increase of the annual average of temperature during the years 2001-2010 in comparison with the years 1970-2000.
Using Natural Distribution Diagram during the years 2001-2010, analysis of the probable density of temperature refers to a great increase in the possibility of having higher extreme temperatures whose value did not exceed 5% over the last three decades. By contrast, lower extreme records had zero probability and got higher than they had been during the three decades of the late century.
Log in to be able to interact and post comments
comments
Fetching comments
Sign in to be able to follow your search criteria
