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Register a new userدراسة بعض العوامل المؤثرة في معدل نمو أمهر الخيول العربية السورية الأصيلة
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Damascus University رسالة ماجستير
Publication date
2014
fields
Agricultural Engineering
and research's language is
العربية
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دراسة بعض العوامل المؤثرة في معدل نمو أمهر الخيول العربية السورية الأصيلة تهدف الأطروحة إلى دراسة تأثير العمر والجنس وفصل الولادة وعمر الام في معدل النمو عند أمهر الخيول العربية الأصيلة السورية
No English abstract
References used
عبد الرحيم طارق 2003 إنتاج الخيول والجمال منشورات جامعة دمشق - كلية الزراعة
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This study had been carried out to investigate the effect of inbreeding on
some morphological traits in purebred Syrian Arabian foals. Data of 10 body
measurements for 108 horses included 60 colts and 48 fillies were collected at
Bassel Al-Assad s
tud for purebred Arabian horses. It consisted of wither
height, croup height, complete body length, back line length, chest depth, chest
width, chest girth, neck girth, croup width, and cannon bone length for front
legs. Pedigree data were extracted from stud book of purebred Syrian Arabian
horses with four ancestor generations and Inbreeding coefficients were
estimated. General linear model (GLM) was used to study the effect of
inbreeding on studied traits. The results cleared that growth rate for biometric
traits in Syrian Arabian foals similar to other Arabian foals in different
regions. On other hand, it was different from growth rate of foals of other
breeds.
This paper aimed to identify the determinants of bank net interest rate margins
within the context of the Syrian banking industry. To achieve the objectives of the
study the data has been collected from those commercial banks listed on the
Damascu
s exchange stock (DES) during 2006-2010. The sample used in this study
consists of a panel data set for sixe commercial banks. The empirical specification
focuses on the reported net interest rate margin that is assumed to be a function of
operation cost, owner's equity, loans-to-asset proxy, size factor, market share,
growth rate, inflation factor, exchange rate. For testing purposes, panel data analysis
is used by employing three alternative models to estimate the parameters of the
model, the Pooled simple regression, the Fixed Effect Model and the Random Effect
Model.
This research studies the competitiveness ability of Syrian exports and the major factors empowering this ability, the availability of these factors considers one of the most important elements to ensure maximum productivity and best use of resources
, and thus reach higher rates of economic growth, taking into account the importance of analyzing the excellence elements which Syrian Exportation Sector owns in light of all restrictive factors facing
competitiveness ability including production costs quality and government role, this research identified a group of remarks and conclusions indicating that although Syria owns market power elements but they are not invested in a sufficient way.
Therefore, the Syrian market is weak with respect to the competitiveness ability, in addition to a clear weakness of the competitiveness of the Syrian exportations, in particular the industrial exportations. This results in the need to implement a group of recommendations or solutions in order to overcome this dilemma. The forefront of these recommendations is the need to support the Syrian exportation’s sectors that have the best competitiveness ability to compete in a clear and transparent
framework of strategy for external trade.
Asphalt concrete was used for the first time in Syria as a tightening material for dam
Sourani. It was used in this dam as a surface facing on the front slope.
Use of asphaltic concrete under climatic conditions prevailing in Syria, particularly
h
igh temperatures, is discussed in the paper. To achieve this goal, a number of bituminous
concrete mixes, designed using the same constituent components in Sourani dam, were
experimentally tested and analyzed. To determine the effect of the expected maximum
temperatures for Sourani dam, a program depending on Energy balance was developed.
Possible methods of reducing the effect of the high temperature in order to increase
the stability of the asphalt surface facing are analyzed. In this context, the facing was
plastered by a light-color, which led to a decrease in the temperature of the asphalt surface
facing by about 20 degrees Celsius. The facing was also plastered by placing a concrete
layer above it, which led to a decrease in the temperature of the asphalt surface facing by
about 25 degrees Celsius.
Four Model Maillard reactions (MRs) have been carried out using Leucine
with each of the following Saccharides; aldohexose (glucose, Glc), ketohexose
(fructose, Fru), aldopentose (xylose, Xyl) and disaccharide (Lactose, Lac) at
100 °C and for 24hr
s. The pH changes with time were monitored during the
reactions at different initial reactant ratio. The products of the reactions
(MRPs) were then separated by absolute ethanol into low and high molecular
weight fractions (LMW & HMW). The four distinct Saccharides–Leucine
MRPs were studied by fluorescence and ultraviolet /visible spectrophotometer.
The results showed the tendency of Xyl–Leu MRPs to form brown polymers
with relatively high reaction rates compared to Fru, Glc and Lac -Leu MRPs
respectively. Further characterization of reducing power of the Saccharides –
Leu (MRPs) was performed and showed that different Saccharides –LeuHMW
(MRPs) had a higher reducing power than LMW ( MRPs).
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