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Register a new userA Contributory Study in the Determing Role of the Serum Response Factor in the Limb Vasculature Development in Embryonic Mutant Mice
دراسة مساهمة في تحديد دور عامل الاستجابة المصلي SRF في تطور أوعية الأطراف الأمامية عند أجنة الفئران الطافرة
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بشير الزالق( باحث )
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يعد عامل الاستجابة المصلي SRF بروتيناً منظماً و ناسخاً للعديد من المورثات الأخرى، و هو يـنظم بشكل خاص عمل المورثات المنظمة لتطور الجملة القلبية الوعائية System Cardiovascular . استندت هذه الدراسة إلى تقانة الكيمياء النـسيجية المناعيـة Immunohistochemistry التـي أظهرت أن العامل SRF يؤثر في تطور أوعية الدماغ و الأطراف الأمامية عند أجنة الفئران.
Serum response factor (SRF) is a protein that regulates the transcription of several other genes. It regulates especially cardiovascular system developmental regulatory genes. This study which was based on the immunohistochemistry showed that SRF influence the brain and limb vasculature development in the mice embryo.
References used
Houdebine, L-M. (1998). La trangenése Animale et ses application. INRA Unité de différenciation cellulaire. 78352 jouy-en-josas. cedex. INRA prod.Anim.,11,81-94
Mericskay, M., Parlakian, A., Proteu, A., Dandré, F., Bonnet, J., Paulin, D. and Li, Z. (2000). An Overlapping GArG/ Octamer. Element is Required for Regulation of desmin Gene Transcription in Arterial smooth muscle cells. Labo. de Biologie moléculaire de la différenciation, univ. Denis Diderot Paris -7, case 7736 France
Sadler, T. W. (2004). Langman's Medical Embryology. Ninth Edition. Lippincotte Williames and wilkins Awolterns Kuwer company philadelpha, New York , U.S.A
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This research discusses the exponential function of the explosion load and the pressure decay factor in this function (a). After that, four functions with four different values of the pressure decay factor are studied, and that is for the un-damped S
DOF system, where the equation of motion is formed and solved. Then, using MATLAB software for every function, the relationship between (Yst/Y(t)) and t/T is plotted, and that enables plotting the response spectrum for each one. Moreover, a comparison between the spectra of the last three functions with the first one that describes the triangular explosion load is drawn. This research has concluded that for a certain range of (a), it is possible, and with acceptable approximation, to use the spectra of triangular load, but beyond that it is better to use the spectra of exponential load.
In Drosophila, the zing-finger homeodomain transcription factors zfh are
expressed in many tissues including nervous system.
The problem of asylum and enforced displacement has become one of the major challenges defining the features of the 21st Century. The unjust dis-tribution of resources, economic crises, and high levels of unemployment are no longer the primary causes
of the widely spread phenomenon of immigra-tion, rather, it is caused by the noticeable increase of wars, international con-flicts and political crises, as well as their multilateral effects of oppression, poverty, exploitation and insecurity.
The United Nations High Commissioner for Refugees has expressed this reality in a statement made on September 07, 2011, when he said: “We live in difficult times. Political crises are multiplying where we least expect them. Unpredictability became the name of the game.”
The failure of the international community to bring many of the existing conflicts to an end and to avoid the eruption of other ones, has lead the in-stability situation to continue in so many places throughout the world. This has forced hundreds of thousands of individuals to leave their homelands. The figures are striking; by the end of 2017, the number of refugees and asy-lum seekers exceeded 65 million.
With the changed nature of crises, their expanded range and prolonged duration, in addition to the limited available resources and capacities, the failure to meet the increasing needs of refugees and the States’ increasing fears of terrorism, the world community and international organizations started to look for effective tools to improve crisis response systems and use new technologies in a way that ensures the refugees living in dignity and se-curity in countries of asylum instead of approaching them as a burden and a crisis that must be dealt with.
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Experiment was conducted on 160 fertilized egg sterile, distributed
in four groups of 40 eggs in each of them, eggs incubation in the
hatchery for 12 h, and then go out and inject eggs experimental
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This research discusses an economic study of wheat crop in Syria during the
period of forty years (from the sixty to the end of the twentieth century)
regarding the production, domestic supply from wheat for consumption with
calculation an equatio
n to the general regression for development of each of
them. To clarify the food gap positions for wheat and coefficient of selfsufficiency,
consumption per capita from wheat and percentage of its
consumption from durum wheat, the factors affecting consumption with types
of nutritive use of wheat and its forms.
The research was classified to a group of secondary titles. The study starts
with an introduction to identify the World and the Arab status for wheat
consumption. After determining the research objectives, material was
presented and ended up with a conclusion and an abstract.
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