Treatment Of Sinonasal Inverted Papilloma Extending To Frontal Sinus By Endoscopic Median Drainage

Here, we present our experience in endoscopic surgical treatment of sinonasal inverted papilloma extending to one or both frontal sinuses to show that the use of endoscopic median drainage( Modified Lothrope procedure) to manage sinonasal inverted papillomas extending to frontal sinuses is feasible and seems effective.

Groundwater movement toward subsurface drains located between two different levels surface water

The high levels of groundwater at riparian rivers or lakes adversely affect the foundations of the engineering facilities which established in these areas, in terms of the corrosion of the reinforced concrete of the foundations, and on the other hand the difficulty of doing the engineering work required. Therefore it is necessary to reduce the levels of groundwater beneath the level foundation. In this research, the groundwater movement toward two coastal drains located at different levels has been studied numerically.

Effect of irrigation method on the transfer of polluting elements in soil to groundwater

The purpose of this research is to apply a mathematical program to calculate water and chemical balance in unsaturated soils, under the influence of different methods of irrigation, in order to monitor the amount of vertical drainage of water inside the soil and choose a irrigation method that can reduce the phenomenon of groundwater pollution. Three irrigation methods were tested with different fertilization method. The study was conducted in the western part of Homs Governorate (AlQusair orchards).

The Syrian Water Situation – An Analytical Study with Future Prospects

This research aims to shed a light on the current state of the Syrian water resource through studying the present resources and analyzing the demand on them and their availability during the period (1992-2012). This study focues at deriving the future forecast on the development of the demand on these resources in order to better conceptualize their current state. This in turn will lead to concluding a set of results and recommendations that could contribute to improve the state of the water resource in the sense of achieving sustainability and prohibiting its depletion through the efficient and planned usage.

Study of some physical and chemical parameters of the Addelbeh Valley water and groundwater in the area of Tartous Cement Factory

This research was performed to study the effect of sewage water on the surface water of the Addelbeh Valley stream, and groundwater on both sides of the stream in Tartous Cement Factory area. Water samples were taken from the factory water outlet and Addelbeh Valley water to study the content of pollutants. We also took groundwater samples from selected wells on both sides of the waterway in the studied area. We repeated that process every two months for a full hydrological cycle from July 2013 to May 2014. We found a great increase in content of the industrial drainage water include oils and heavy metals especially iron, copper and zinc. For example: iron concentration in sewage water exceeded 150 mg/l in all samples. Besides sewage water and stream water contained high concentrations of ammonia and nitrite versus low concentration of nitrate, unlike water wells samples. The study revealed increased EC and salts concentration markedly in wells water due to its adjacency to the sea.

A Study of The Properties of Scoria For Use In Filling Work

The purpose of this paper is to identify the specifications of volcanic tuff (scoria) widespread in the south of Syria, many laboratory tests have been done for determining the basic physical properties of scoria the addition of compaction, shear resistance, particle size distribution, and California bearing ratio. Also, an analytic study has been done to state the possibility of using scoria in filling by itself or after being mixed with clay (forming the greatest part of soils in south Syria), examining the change occurring in clay. So we have determined clay specifications, adding scoria to clay using different percentages: (5% - 10% - 15% - 20% - 25% -30%) Then we study the specifications of each mixture, such as compaction properties, shear resistance, particle-size distribution, and California bearing ratio.

The response of salt hardening of Maize seeds to salt stress

In order to study the effect of prime treatment (salt hardening) on maize seeds (variety Ghouta 82) and type of irrigation water on the plant response to salt stress through the effect on the productivity and the plant tissue contents Cl, Na and K. Maize seeds were soaked in Euphrates fresh water (EC:1.03 dS.m-1), or in agricultural drainage water (EC: 5.89 dS.m-1) for (12) hours, the seeds therefore were dried and planted in plots of (15 m2) for each replicate and then irrigated with four different types of water; (100 % Euphrates water, 50% Euph. water + 50% agri. drain. water, 33 % Euph. water + 67 % agri. drain. water, and 100% agri. drain. water) during the growing season. K, Na, and Cl in plants were determinated, 1000 grains weight, and grain yield production were estimated in kg.h-1 for each replicate and treatment. The results showed that, it is possible to have 3 tons of grain / hectare by irrigation with agricultural drainage water, which is acceptable, under semi-arid conditions. Salt hardening of maize seeds increased seed yield by (32.80%), which is considered satisfactory under the experimental conditions.

GMS Model to Drain the Groundwater in the 3ed Sector of the Lower Euphrates Basin-Syria

The third sector of lower Euphrates basin has a great economic importance, but some lands have gone out of service because of salinization due to the rise of groundwater levels. Thus, it is very important to solve the ground water issue using new scientific techniques. This research aims to solve the drainage problem in the third sector using a scenario based on a mathematical model, the results of which allow us design a proper drainage network comprised of 111 wells scattered all over the study area, with a total abstraction of 269000 m3/day. This will lower the groundwater level, dry the swamps, and decrease the soil salinity, ensuring a sustainable economic exploitation of agricultural lands.

Groundwater Flow Modeling “Lower Euphrates Valley”

The provision of adequate drainage and the accompanying problem of accumulation of salt in soil have plagued irrigated agriculture for centuries. Soil salinity is one of the major problems in arid and semi-arid zones. In Euphrates valley the high groundwater level and its high evaporation rate caused a serious salinity problem. This study was aimed to allocate the dangerous areas in terms of high water level resulted from the recent and expected activities. Drainage wells will be drilled at these areas in order to lower the groundwater level and prevent further soil salinity.

Spatial Variability of Nitrate and Phosphate Concentrations in Waters from Main Drainage Canals at Al-Hassa Oasis, KSA

The Al-Hassa oasis at the Kingdom of Saudi Arabia is an agricultural area depends on irrigation associated with a drainage network with three main drainage canals. Two of them, the D١ and the D٢, cover most of the oasis total area (٢٠،٠٠٠ ha) while the third one (the D٣) covers a limited area. This study aimed to examine the spatial variability in the concentrations of NO٣ - and PO٤٣- in the drainage water of the D١ and the D٢ canals.