The impact of social, economic and health factors on the external migration of human capital in Syria

This study aimed at identifying the concept of human capital migration and identifying the main internal causes behind the phenomenon of human capital migration in Syria by studying the impact of a range of economic, social and health factors (unemployment rate, death rate, life expectancy, (15 years and more), the rate of inflation, the graduation rate of undergraduate students and the graduation rate of students of studies in Syrian universities) on the rate of human capital migration, based on the data between 1990 and 2010. The researcher reached the following main results: High inflation leads to l The high rate of migration of the human capital, while the low unemployment rate leads to the high rate of migration, but the high rate of employment leads to a slight increase in the rate of migration and this is because most of the young groups pursue studies outside the country after graduation, The increase in life expectancy at birth leads to a sharp drop in the rate of human capital migration. The high percentage of university graduates leads to a high rate of human capital migration. This is due to the fact that the largest proportion of graduates prefer immigration to work or to follow them in countries Other, while a The increase in the proportion of graduates of study students leads to a decline in the rate of human capital migration. This is due to the fact that they prefer to continue their education within the country, thus reducing their chances of emigration due to the continuation of their education or because of their increasing awareness of the importance of their presence within the country.

Host Migration specification in SDN networks

In this paper we introduce a specification model for the host migration process in Software Defined Network, and for verifying the reachability property for packets that do not change after the migration, and achieve the required modifications to meet the same properties. The model is designed by TLA+ language and verified by TLC which is correlated with it. The model is implemented by few states to meet the required property.

Studying the Relationship between the Informal Housing Phenomenon and Internal Migration: A Case Study of Lattakia City

The Informal housing phenomenon is one of the dangerous residential challenges facing governments in many cities of the world. Informal housing happens when a crosssection of society tries to solve their housing problems by themselves without government supervision or interference. This stems from their limited financial and cultural abilities, triggering a residential environment requiring sound designing and arrangement. There will not be a final solution to informal housing in sight without addressing the reasons that cause the informal housing phenomenon and ways of handling them. Moreover, internal migration is one of the main reasons for informal housing that researchers agree on. So, this recent research investigates the internal migration phenomenon being one of the reasons for studying and analyzing its volume and direction. This is a first step towards examining the correlation between the informal housing phenomenon and internal migration. This research also deals with the internal migration effect on the demographic properties of informal housing areas by a field study of a number of informal housing areas in Lattakia. This study shows that internal migration is one of the component factors for informal housing, showing its clear effect on the demographic features of informal housing areas.

The Specific Composition of Assemblages Gastropods And Economic Migratory Species in several Locations of the Syrian Coast

This research deals with comparable study of the specific composition of assemblages gastropoda and migratory species in four regions of Syrian coast, which differed by substrate nature and their exposure to pollution resources and rivers estuaries, They are as fallow:The Southern Region of Lattakia, AL Bhyss and AL Moelh South of Jableh, Estuary Assin. This research was done between April 2010 and April 2011. The samples were collected from the supralittoral ,littoral and sublittoral regions at depth 3m.

Evaluation of Some Migration Parameters Between the Virgin Olive Oil and the High Density Polyethylene

هدفَ البحث إلى كشف احتمال حدوث هجرة متعاكسة بين المواد المضافة إلى البولي إيثيلـين عـالي الكثافة المستخدم في صناعة عبوات تعبئة زيت الزيتون البكر و الزيت المعبـأ، و قـد صـممت التجربـة بالاعتماد على حبيبات البولي إيثيلين من جهة للحصول على أعلى سطح تماس ممكن بزيـت الزيتـون، و باستخدام نوعين منها أحدها أبيض اللون و الثاني أحمر، كما درس تأثير كل من زمـن التمـاس بـين الحبيبات و الزيت و زمن تخزين الزيت من جهة أخرى. و لتحديد ما يجري فعلاً عند تخـزين الزيـت فـي العبوات البلاستيكية بأبسط الطرائق، درس كل من رقم الحموضة، و رقم البيروكسيد، و لزوجـة الزيـت، و كشف وجود مركبات الدايينات المهاجرة على موجة امتصاص UV)232nm) ، فضلاً عن دراسة العـد الكلي للأحياء الدقيقة (لكشف احتمال وجود مثبطات نمو)، و الاختبارات الحسية. كما قيست إمكانية حدوث هجرة للزيت إلى حبيبات البولي إيثيلين.

Effect of temperature and exposure time on the stability of Plasticizers, which are used in plastic Packing Industry, in food simulants

Additive migration levels in food simulants from polymeric materials that are intended to be into contact with food can be affected by additive stability under the migration test conditions. In this work, the stability of Dibutyl adipate (DBA), Diisobutyl adipate(DIBA), Diisobutyl phthalate (DIBP), Di-noctyl phthalate (DnOP),and Diethylhexyl sebacate (DEHS).,was studied in aqueous food simulants A, B, C and ethanol 95% (as a substitute for olive oilwhich is a fatty food simulant, simulant D), at different temperatures 20, 40 and 70 ºC, during 20 days. Samples were analyzed by high performance liquid chromatography (HPLC) with UV detector at 270 nm. The stability of the studied compounds appeared to be least of all in simulant B, then in simulant A, and finally in simulant C., When temperature and exposure time increase., on the other hand, the increase in temperature and exposure time have greatly less effect on the stability of plasticizers in ethanol %95,as a substitute for olive oil-which is a fatty food simulant.

Effect of temperature and exposure time on the stability of Some antioxidants, which are used in plastic Packing Industry, in food simulants

Additive migration levels in food simulants from polymeric materials that are intended to be into contact with food can be affected by additive stability under the migration test conditions. In this work, the stability of four antioxidants: Butyleted hydroxy toluene (BHT), Bisphenol A (BPA), Pentaerythritol tetrakis (3,5-di-tert-butyl-4-hydroxyhydrocinnamate) (Irganox 1010), and Octadecyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate (Irganox 1076), was studied in aqueous food simulants A, B, C and ethanol 95% (as a substitute for olive oil- which is a fatty food simulant- simulant D), at different temperatures 20, 40 and 70 ºC, during 20 days. Samples were analyzed by high performance liquid chromatography (HPLC) with UV detector. In general, the studied compounds appeared to be more stable in both Ethanol (95%) and simulant B than in simulants A and C.

Analysis of migration from the area of Jabal al- Hoss using some econometric techniques

This paper presented an analysis of the most important factors that drive immigrants from the area of Jabal al-Hoss in the province of Aleppo to different directions searched for employment and how they affect migration destination and the nature of the work on the amount of migrant remittances to his family. The research also highlighted the importance of individual characteristics, family and community of immigrants, especially since the study area was considered one of the dry and marginal areas in Syria, poor in natural and human resources using the methods of econometric analysis (models logistic regression and multiple regressions). Results showed that the probability of migration out of Syria was getting the male immigrants and individuals younger and more educated and those who were descended from the family even poorer, and the largest number, also found that the likelihood of working immigrant in the agricultural sector increased immigrants from females, and those with a low educational level. There was also an evidence that the amount of remittances sent to families of migrants increased if migrant worked in non-agricultural sector, and as the family was much poorer and more numerous.

Effect of temperature and exposure time on the stability of plasticizers, which are Used in plastic Packing Industry, in food simulants

Additive migration levels in food simulants from polymeric materials that are intended to be into contact with food can be affected by additive stability under the migration test conditions. In this work, the stability of two plasticizers: Diethylhexyl phthalate (DEHP) and Dibutyl phthalate (DBP) was studies in aqueous food simulants A, B, C and ethanol 95% (as a substitute for olive oil- which is a fatty food simulant- simulant D), at different temperatures 20, 40 and 70 C0, during 20 days. Samples were analyzed by high performance liquid chromatography (HPLC) with UV detector. In general, DEHP and DBP plasticizers appeared to be more stable in both Ethanol (95%) and simulant C than in simulants A and B, while, they are less stable, even at low temperatures, in Simulant B than in simulant A .

An “in vitro “ Study of the Migration Through A Porous Medium of Some Pesticides Used in Agriculture

This research aimed to study the theoretical basis of the pollutant migration to the aquifer and to carry out some experiments concerning the migration of some kinds of pesticides in order to calculate the related coefficients. Hence, the research concentrates on testing the basic methods of migration to the ground waters, finding the physico – chemical reactions between pollutants and aquifer and finding the differential equations which express the movements to the ground waters which can be applied on the experimental data. It also, includes the mechanism study of pollutant migrations through the unsaturated layer is regarded as a passage of the pollutants to the ground waters, and the experimental methods of the calculation of the basic migration coefficient.