A column experiment was carried out under the conditions of the laboratory of colloids and clay minerals at the Faculty of Agricultural Engineering at the University of Aleppo. The aim of study is know the effect caused by the magnetization of irriga
tion water on the physicochemical properties of soils irrigated with water of different salinity. The experiment was carried out on selected gypsiferous soils from the village of Musharafa Al-Zakiya located in the Maskana project (Aleppo governorate). And it was irrigated with three types of water of different salinity (Euphrates River water -Rasm Al-Hamis village - Musharafa Al-Zakiya village). Irrigation technology was applied With magnetized water (M) and water without magnetization (NM), a leaching factor of 15% was used with water added to the columns, and the irrigation process was repeated ten times. The results indicated that the use of the water of Rasm Al-Hamis well and the well of Mishrifa, the magnetic purity, contributed to the washing of salts by 20% and 16% for the surface and subsurface layers, respectively, compared to similar treatments irrigated with normal water, and the results of the statistical analysis indicated that the decrease in the concentration of salts in the washed columns The magnetized water was significant. As for the magnetized water of the Euphrates, it contributed to the washing of salts from the surface layer within the soil columns by about 5.5%, compared with the treatment irrigated with non-magnetized Euphrates river water, and the decrease in the concentration of salts was not significant. The data indicated in general to the significant role of the washing coefficient applied in this study in the disposal of salts, in particular soda salts, as the data showed that the magnetization of water added to the studied soil columns contributed clearly in reducing the values of the adsorbed sodium ratio (SAR) and the ratio of exchangeable sodium (ESP) compared to the non-magnetized irrigation water. The magnetization of water also contributed to improving the porosity of soil irrigated with magnetized water, compared to treatments irrigated with ordinary water.
The Seventh sector is located on the right bank of the Euphrates River at the town of ALbu- Kamal, the Syrian-Iraq border. Invest most heavily sector too, by planting different crops which irrigated by irrigation networks consisting of canals and ear
then trenches. Research aims to evaluate the salinity of agricultural soils and unconfined groundwater by doing field surveying of agricultural soils of horizons from ground surface till depth 200cm. and making detailed chemical analysis of free groundwater and evaluate the quality of it to determine the salinity regions and the salinity degree. The salinity of agricultural soils of the sector are sulfate-chlorine and little degree chlorine - sulfate and chlorine classified non salinity –little salinity and little degree moderate salinity to very highly and highly salinity. The salinity of free groundwater between 1.3-28.5 g/l. and classified chlorine sulfate-magnesia calcic and sometimes sulfate chlorine- calcic magnesia. The research recommend to study and determine the leachingrequirement of salinity regions from actual test or choosing the most appropriate experimental equations.
يعود ظهور شجرة الزيتون إلى ماض سحيق ( ستة آلاف سنة ) وقد ارتبط نشؤوها بتاريخ بلدان البحر الأبيض المتوسط حيث لعبت منذ الأزمان الأولى دوراً هاماً في اقتصاد شعوب البحر الأبيض المتوسط
This study aimed to investigate the characteristics of soils developed on volcanic ash in an area with a Mediterranean soil moisture regime to determine the presence or absence of amorphous minerals in these soils.
Soil samples were collected from three sites located at distances (0, 1500,
3000)m along the road from the northern entrance of Daraa city. For each site,
samples were collected from two depths, at three distances from the road axis
and from the t
wo sides of the road. Results showed that total and available lead
concentrations in soil were higher in east than west side of the road due to the
effect of the dominant westerly winds in the region. the differences were
significant for the total and available lead concentrations at distances
(0,1500)m, and (0,3000)m at the entrance of the city, the distances (5,25)m, and
(5,50)m, at the distance from two road sides, and between the depths (0-15),
(15-30)cm, whereas the differences were not significant for the total and
available lead concentrations at distances (1500,3000)m at the entrance of the
city, and (25,50)m at the distance from two road sides. There was a very strong
correlation between the average total and available lead concentration.
Studing and defining the types of soils by using the method of
integrating data of remote sensing and the devices measuring the
reflex rays such as radiometer and spectrometer ….etc is considered
one of very recent technology in such study,so that
we define the
reflexed spectrum intensity for the ground targets where the soil is
one of them that directly in the field and making comparsion of this
results with images of satellites where the channels of device do on
the same spectrum ranges of the satellites.
The expense of using the ground method is high an it requires
long time comparativilty using the space images to the same target.
In this research types of soils determined their speed
boundaries,drawing a map and making the reflexed graph for them.
يعتبر النشاط الحيوي أهم المؤشرات الحيوية التي تتأثر في حالات تلوث التربة بالكيماويات بأشكالها المختلفة
This research includes the procedures of applying the nonlinear static analysis (pushover
analysis) on seismic resistance concrete frame systems by modeling the foundation
system (soil + footing) down the structure as an elastic springs and rocking
stiffness and
comparing them with premise of fixed support in terms of the deformation and
displacement, load and stress distribution in frame elements and accordingly clarifying
the effect of improving soil on foundation system stiffness and on the responding of frame
to lateral loads which helps in moving the structure performance from low level to a higher
level that we need from structure to reach following the design strategy that we choose for
the structure.
This research represents a trial to establish a primary database of load tests applied on concrete driven piles embedded in sandy soils. This research depended on analyzing and evaluating a large number of available load test curves of driven piles.
The variation of pile ultimate bearing capacity value is studied according to several parameters such as (relative density of sand, embedded length of pile and pile diameter). Depending on the obtained results a primary approximate relationship is suggested to calculate the ultimate bearing capacity of driven piles in sand. Then, a comparison is made between the suggested method and the other analytical calculation methods and also, with the obtained results from an available international codes of practice in America, Russia and Germany. The approximate relationship introduces a simple and easy method to calculate the bearing capacity of concrete driven piles in sands. Also, This suggested method may be considered as an introduction to developing the
researches to include different kinds of soils.
نفذ البحث في مركز البحوث العلمية الزراعية بالقامشلي - محطة الينبوع وفق تصميم تجربة عاملية ( 2 عامل) حيث يمثل نوع التربة للمعاملات الرئيسية
