Trends of annual and seasonal precipitation times series in some locations of the Syrian Coastal region

In this study, trends of annual and seasonal precipitation time series for the period of (1971–2006) were analysed for three meteorological stations (Lattakia, Tartous and Safita) located in the coastal region of Syria, by linear regression and Spearman's rho tests. The results showed a decreasing trend of annual precipitation in Lattakia and Tartous stations and increasing trend in Safita station. At the seasonal time scale, a decreasing trends of winter precipitation in Lattakia station and of spring precipitation in all stations were observed. While an increasing trends of winter precipitation in Tartous and Safita stations and of autumn precipitation in all stations were observed. Although, all of these negative and positive linear trends, both at the annual and seasonal time scales are not statistically significant at 5% level, but they can have severe effects on water resources, rivers regimes and success of rain-fed crops in the study areas

The Relationship Between the Run off and Precipitation in the AL-Aasi Basin

The importance of this study lies in the hydrological analysis of the relationship between the drainage system and the precipitation. The problem of the study reveals in the water incompetence in the basin which get to 336 million m3 and will gets to 600 million m3 with probability (p = 50%) and associated with missing the accurate evaluation of the water resources. The study aims to evaluate the water resources in the basin, to create a mathematical model for calculation of the run off and its relationship with the precipitation, and to predict the water resources for the hydrological year according to many probabilities and the complementary management for water resources. Stages of the study involve the following: 1- Determining of the active stations in the feeding of hydrometric stations. 2- Observing the average of water resources quantity (precipitation) over the basin that reached 9764 million m3 and range between 2,26millionm3 in the hydrometric station of AL- Hamidi and 112,42 million m3 in Hama station. 3- Observing the average of the run off in the basin reached 744,67542 million m3. 4- Observing the run off system in the basin is a snow-rain system, where the average of maximum discharge associates with precipitation and the minor discharge associates with deprivation of the precipitation. 5- Creating a mathematical model for calculation of the run off and its relationship with the precipitation. 6- Predicting the water resources for the hydrological year according to many probabilities. 7- Creating a water strategy for the basin according to the data of water predication in many probabilities

Partial purification of hydroxycinnamic acid esterase and study of its activity in the synthesis of ferulic acid ethyl ester

A partial purification was performed for the fungal hydroxycinnamic acid esterase (HCAE) from Humicola sp. by precipitation using either ammonium sulfate or acetone.

Study of the chemical characteristics of rain water in different sites in Lattakia

The research has been conducted in different sites in lattakia, Alhamra and alsabahia villages of Rabea and Aen alzarqa of Mashqeta. 14 cases of precipitation was marked which caused runoff and water erosion of soil during the research (seasonal rainfall in 2011/2012). Samples of rain water of every precipitation case were collected. by using rain gauges that were installed in the research sites. After that, samples were moved to the laboratory. The pH was determined after that the samples were analyzed by using an ion chromatography device(IC).

Identifying hydrodynamic soil parameters of Hweez dam in Lattakia which needed to build mathematical model for Predicting the Water Content Distribution using the Simulation Program PCSiWaPro®

In this paper, we focus on the importance of conducting the necessary tests either field or laboratory in order to obtain realistic values for soil hydrodynamic parameters allowing the best result to simulate the actual situation of any engineering facility. The importance of this research highlights in earth dams and dikes which have great importance to economic, environmental and human. It is necessary to be complete accuracy when creating a mathematical model to study stability of these structures. From here comes the need to calculate these parameters rather than extracted from engineering codes, that we will use them to simulate the effect of long rainfall on the distribution of water content in the Hweez dam soil and hence its stability. We will build a mathematical model for dam using PCSiWaPro® depending on transition flow chart. concerning that, hydraulic conductivity and volumetric water content in the soil are functions of pore water pressure. These equations with their functions give a smooth transition of the studied model where the saturated state is considered as a special case of the used equations.