Mohamed TEWFIK Bouziane

Université de Biskra · Department of Civil and Hydraulic Engineering

One of the general problems encountered in the design of open channels is the computation of normal depth, head loss, and the discharge. The wide rectangular section is commonly used for natural streams and the triangular section is commonly used for irrigation and roadside channels. The normal depth or head loss is traditionally solved using a tri...

This technical note presents the derivation of an analytical method for identifying the stability of uniform flow in three open channel sections (rectangular, parabolic, and circular). Using a dimensionless relative slope factor, a general equation for the prediction of stability thresholds for the occurrence of roll waves for each cross-section sh...

In this paper, we consider the modeling of time series corresponding to the methodology of Box and Jenkins for building forecasting modeling from ARMA (Auto Regressive Moving Average) processes. This involves the analysis and forecasting of drinking water production data. The purpose of this study is to modeling a time series of drinking water prod...

The study presented herein proposes a multi-criteria decision-making tool to identify flood susceptibility areas on a regional scale. The adopted approach is based on the integration of multi-criteria analysis, geographical information systems (GIS) and remote sensing (RS) techniques. Accordingly, flood susceptibility maps were prepared depending on...

This article presents the results of a survey using a questionnaire conducted in Algeria, to evaluate the quality of public drinking water service, and at the same time the level of dissatisfaction / satisfaction of the subscribers. A statistical analysis of the data has been conducted on a representative sample of general population to identify we...

RESUME: dans la région de Touggourt, deux stations d'épuration sont installées actuellement pour la dépollution des eaux usées urbaines, une de type phyto-épuration et l'autre par boues activées. La performance de cette dernière est influencée par les fluctuations de débit de l'eau usée et sa composition dans le temps. C'est dans ce contexte que s'...

RESUME: dans la région de Touggourt, deux stations d'épuration sont installées actuellement pour la dépollution des eaux usées urbaines, une de type phyto-épuration et l'autre par boues activées. La performance de cette dernière est influencée par les fluctuations de débit de l'eau usée et sa composition dans le temps. C'est dans ce contexte que s'...

In North Africa precisely in Souk Ahras city which is located in the east side of Algeria, the climate is arid to semiarid; the Rainfall is uncertain and irregular. The water as brittle resources is unevenly distributed and less available. Using waters harvested from the houses roofs as a solution among other seems good. The collection areas can ha...

In North Africa precisely in Souk Ahras city which is located in the east side of Algeria, the climate is arid to semiarid; the Rainfall is uncertain and irregular. The water as brittle resources is unevenly distributed and less available. Using rainwater harvested from the houses roofs as a solution among other seems good. The collection areas can...

Français) Les besoins progressifs en eau, mènent les chercheurs au monde, particulièrement aux zones arides et semi arides et notamment en Algérie à explorer autres opportunités dans ce secteur. Ces dernières se présentent dans les méthodes non conventionnelles relatives à l'eau. Parmi ces méthodes on distingue la récupération des eaux de pluie à p...

RESUME Les systèmes de pompage photovoltaïques autonome de l'eau est l'un des meilleurs choix, en particulier dans les régions isolées. Dans la plupart des cas, l'énergie photovoltaïque est utilisée directement à partir des panneaux photovoltaïques sans conversion ou stockage. La particularité des pompes installées au fils du soleil, est que leurs...

RESUME Les techniques d'analyse thermique et de calorimétrie sont des méthodes d'essai largement utilisées dans les laboratoires d'analyse physico-chimique, pour des finalités de recherche et de contrôle de qualité. En permettant la caractérisation du comportement thermique des matériaux, la détermination des principaux paramètres thermodynamiques...

This paper aims to develop a decision support tool to provide solutions to the problems of sewer networks management/maintenance in order to assist the manager to sort sections upon priority of intervention by taking account of the technical, economic, social and environmental standards as well as the managers' strategy. This solution uses the Anal...

RESUME Dans ce papier, nous proposons un prototype d'aide à la décision interactif pour la gestion de la réhabilitation des réseaux d'eau potable afin de réduire les difficultés et complexités de management des opérations d'intervention, en tenant compte plusieurs critères qui sont distribués selon des axes en relation avec des objectifs de gestion...

The problem of corrosion has taken nowadays a considerable importance considering the great use more and more of metals and alloys in our modern life. From the economic point of view and safety, the corrosion is a real thread. The replacement of corroded material composes for the industrie a financial burden which is very high. I taws estimated tha...

The discontinuous precipitation and dissolution in the alloy Al-Zn system has been the subject of many theoretical and experimental investigations that have contributed to the understanding of the different mechanisms which control them. However, many questions remain unanswered because of the complexity of the constituted phases which are affected...

The precipitation in the alloy Al–Mg system has been the subject of many theoretical and experimental investigations that have contributed to the understanding of the different mechanisms which control them. However, many questions remain unanswered because of the complexity of the constituted phases which are affected by the speed of the quenched,...

The study of the discontinuous precipitation reaction and the lamellar precipitate dissolution in the alloy Cu-In system provoked a considerable benefit and has been the subject of many theoretical and experimental investigations. The aim of this work is to make the evidence on the one hand the effect of the plastic deformation on the mechanism of...

The precipitation in the alloy Al-Mg system has been the subject of many theoritical and experimental investigations that have contributed to the understanding of the different mechanisms which control them. The purpose of this work is to clarify the effect of temperature on the mechanisms of these during ageing of Al-8% mass.Mg alloy. The techniqu...

In this paper we study the effect of the temperature on the mechanisms of the discontinuous dissolution of the Cu-4.6 at.%In alloy and in particular its effect on the behavior of the reaction front, on its characteristics and on diffusion type. The obtained results by the different methods of analysis confirm various works achieved in this field.

The deep drillings in of the area of Biskra (Algeria), which collecting the Barrémo- Albo-Aptiennes geological structures present unusual hydraulic works. They are characterized by: • A depth varying between 1500 and 2700 meters, • High water temperature to the discharge system (between 30 and 50°C), • Important flow (35 to 120 l/s) regarding the s...

In this study data from 30 catchments in the Chott Melghir basin in the semiarid region of southern East Algeria were analyzed to investigate changes in annual discharge annual precipitation over the 1965-1994 periods. These data were analyzed with the aid of Kendall test trend and regression analysis. The results indicate that (1) the major variat...

In the following work, a relative easy calculation has been done in the context of a rational exploitation of local solar field. Indeed the setting up of a solar system to satisfy a well-determined need in a given site has to be done only after, first of all, having estimated the system productivity relative to the solar field really available by g...

The present work is interested in the study and the choice of the economic diameter for the projects of adduction. To do it, generally one intervenes what one calls the expenses of investment and exploitation. It is very important : É To reduce at most the expenses of investment bound to the channeling; É Also to reduce running costs bound to the f...

The aim of this work is the demonstration of the effect of thermomechanical treatments on the properties of the alloy Al-5.8%Zn-2.7%Mg by thermal analysis techniques and calorimetry, which are methods of test widely used for research purposes and quality control. The effects of thermomechanical treatments on the two variables namely the coefficient...