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Online since: January 2022
Authors: Samia Achour, Fattoum Bouchemal
Assessment of Physicochemical Parameters and Suitability for Irrigation of Groundwater Resources from Biskra Area
(Southeastern Algeria)
Fattoum Bouchemal1,a*, Samia Achour2,b
1Hydraulic and Civil Engineering Department, University of El Oued, PO Box 789, El Oued, 39000, Algeria
1,2Research Laboratory in Underground and Surface Hydraulics (LARHYSS), University of Biskra, BP 145, RP, 07000, Biskra, Algeria
*bouchemal_hydro@yahoo.fr (corresponding author)
Keywords: Groundwater; Physicochemical Quality; Suitability, Irrigation; Biskra Area.
The Wilaya of Biskra have two resources of water: surface water from the North (Aures, tellian Atlas) which crisscrosses almost the entire territory (Oued Biskra, Oued Djeddi, Wadi El Arab, Oued El Abiod), and the groundwater of the northern Sahara mainly represented by the aquifers of the Terminal Complex (TC) and the Intercalary Continental (IC) in addition to the phreatic aquifer [12].
La Houille Blanche, 2008, 2,76-82.https://doi.org/10.1051/lhb:2008020 [18] Guendouz, A., Moulla, A.S., Edmunds, W.M. et al.
Hydrochemical analysis and evaluation of groundwater quality in El Eulma area, Algeria.
The Wilaya of Biskra have two resources of water: surface water from the North (Aures, tellian Atlas) which crisscrosses almost the entire territory (Oued Biskra, Oued Djeddi, Wadi El Arab, Oued El Abiod), and the groundwater of the northern Sahara mainly represented by the aquifers of the Terminal Complex (TC) and the Intercalary Continental (IC) in addition to the phreatic aquifer [12].
La Houille Blanche, 2008, 2,76-82.https://doi.org/10.1051/lhb:2008020 [18] Guendouz, A., Moulla, A.S., Edmunds, W.M. et al.
Hydrochemical analysis and evaluation of groundwater quality in El Eulma area, Algeria.
Online since: June 2011
Authors: Zhi Chu Lu, Ke Rong He
Wang et al. [1, 2] have simulated adsorption of hydrogen in SWNT and actived carbon pores by using GCMC method, quanta effect is considered in the simulation, compared the simulation results with the experiment results, they found that the simulation results fit to the experiment results in actived carbon pores, but the difference appeared in the SWNT.
Chong Gu et al. [3, 4] have studied Hydrogen adsorption in SWNT, they displayed the amount of adsorption as a function of van der Waals (VDW) distance of nanotubes and the adsorption as function of continuously changing diameter, and they discussed the influences of pressures, temperatures, the diameters and VDW distances of SWNT on adsorption.
Dapeng Cao et al. [5] using grand canonical ensemble Monte Carlo (GCMC) method simulated adsorption of methane in SWNT array at room temperature, they found that SWNT array exhibits a large adsorption capacity for methane storage, and they get the optimized VDM gap in SWNT array for methane storage.
Tanaka et al. [6] using density functional theory (DFT) studied isolated SWNT storage methane and silt carbon pore; they note that on a per weight basis, total excess adsorption on the internal and external surfaces of an isolated SWNT exceeds that for the idealized slit pore with the same size, although the adsorption capacity of the interior of SWNT is less than that for the silt pore geometry.
El-Merraoui, W.
Chong Gu et al. [3, 4] have studied Hydrogen adsorption in SWNT, they displayed the amount of adsorption as a function of van der Waals (VDW) distance of nanotubes and the adsorption as function of continuously changing diameter, and they discussed the influences of pressures, temperatures, the diameters and VDW distances of SWNT on adsorption.
Dapeng Cao et al. [5] using grand canonical ensemble Monte Carlo (GCMC) method simulated adsorption of methane in SWNT array at room temperature, they found that SWNT array exhibits a large adsorption capacity for methane storage, and they get the optimized VDM gap in SWNT array for methane storage.
Tanaka et al. [6] using density functional theory (DFT) studied isolated SWNT storage methane and silt carbon pore; they note that on a per weight basis, total excess adsorption on the internal and external surfaces of an isolated SWNT exceeds that for the idealized slit pore with the same size, although the adsorption capacity of the interior of SWNT is less than that for the silt pore geometry.
El-Merraoui, W.
Online since: August 2013
Authors: Hai Xia Li, Hai Long Yu, Ping Chuan Zhang
A rapid method for 3D physical properties inversion based on separation and continuation of potential field proposed by Xu shizhe et al. (2009), which is stable , fast, and suitable for 3D inversion of magnetic data in large area [5].
El-Araby.
Hansen,et al.
Yu, H.X.Li, et al.
Yu, et al.
El-Araby.
Hansen,et al.
Yu, H.X.Li, et al.
Yu, et al.
Online since: June 2014
Authors: Mariano Marcos Bárcena, Jorge Salguero Gómez, Moises Batista, Franck Girot, Madalina Calamaz
The work presented in this paper is an investigation of the prediction of these parameters in slotting processes of UNS A92024-T3 (Al-Cu) stacks.
Coons adjustment surface FX(fz,V) Conclusions This paper has reported on the results of a study of the influence of cutting speed and feed per tooth on the orthogonal components of cutting force acquired in slotting processes of Al-Cu sheets stacks.
Gonzalez, Modelo paramétrico de la fuerza de corte para el torneado de la aleación AA2024, Bol.
Marcos, Cutting speed-feed based parametric model for macro-geometrical deviations in the dry turning of UNS A92024 Al-Cu alloys, Key Eng.
Marcos, Roughness prediction models for tangential cutting forces in the dry turning of Al-Cu alloys.
Coons adjustment surface FX(fz,V) Conclusions This paper has reported on the results of a study of the influence of cutting speed and feed per tooth on the orthogonal components of cutting force acquired in slotting processes of Al-Cu sheets stacks.
Gonzalez, Modelo paramétrico de la fuerza de corte para el torneado de la aleación AA2024, Bol.
Marcos, Cutting speed-feed based parametric model for macro-geometrical deviations in the dry turning of UNS A92024 Al-Cu alloys, Key Eng.
Marcos, Roughness prediction models for tangential cutting forces in the dry turning of Al-Cu alloys.
Online since: January 2018
Authors: Ruth Herta Goldsmith Aliaga Kiminami, Elvia Leal, Elíria Maria de Jesus Agnolon Pallone, Marcelino Guedes de Lima, Ana Cristina Figueiredo de Melo Costa
The same behavior was observed by Rigo et al. [14] and Aminzare et al. [19], who synthesized hydroxyapatites for use as bioceramics in the formation of bone cements.
In their studies, Chinelatto et al. [20] found that 1350°C/2h is the optimum temperature to promote high (c) (b) (a) densification and high values of diametral compression of commercial alumina.
These values also lie within the range of compressive strengths reported by Van der Stok et al. (2011) [22], who studied bone substitutes for use in trauma and orthopedic surgery.
From the standpoint of the mechanical property of compressive strength of the human trabecular bone, it can be stated that the values found in this study for composites A20 and A30 lie within the range of compressive shear strength values reported by Sanyal et al. (2012) [23], i.e., 1 to 30 MPa.
El Massoudi, G.H.
In their studies, Chinelatto et al. [20] found that 1350°C/2h is the optimum temperature to promote high (c) (b) (a) densification and high values of diametral compression of commercial alumina.
These values also lie within the range of compressive strengths reported by Van der Stok et al. (2011) [22], who studied bone substitutes for use in trauma and orthopedic surgery.
From the standpoint of the mechanical property of compressive strength of the human trabecular bone, it can be stated that the values found in this study for composites A20 and A30 lie within the range of compressive shear strength values reported by Sanyal et al. (2012) [23], i.e., 1 to 30 MPa.
El Massoudi, G.H.
Online since: January 2017
Authors: Abdellah El Barkany, Ahmed El Khalfi, Ghita Ettaye
Modeling and Optimization a Production/Maintenance Integrated Planning
Ghita Ettaye1, a *, Abdellah El Barkany1,b and Ahmed El Khalfi1,c
1 Mechanical Engineering Laboratory, Faculty of Science and Techniques, Sidi Mohamed Ben Abdellah University, Fez, Morocco.
In the case of a system that has a set of parallel production lines, Aghezzaf et al [8] treated for the first time the integrated planning problem, based on the Lagrangian decomposition.
Then there comes the work of [9], which have also used the works of Nourelfath et al [10] and Aghezzaf et al [8] to study systems with parallel components considering economic and stochastic (failure of common causes FCC) dependences.
In another context, Najid et al [12] proposed a joint production and maintenance planning model for a production system subject to random failures taking into account reliability parameters of the system and its capacity.
Yalaoui et al [11] say that if we know the maintenance cycle T and the probability distribution of failures we can express its value in function of the interval number per cycle T with number of periods: Production System We worked on the modeling of classic lot-sizing problem with finite capacity (denoted MCLS: Multi-item capacitated lot-sizing problem with setup times and Shortage costs) by introducing the cost of breaking on demand, our work consists of determining a production plan of a set of references R, for a planning horizon composed of N long periods (big buckets).
In the case of a system that has a set of parallel production lines, Aghezzaf et al [8] treated for the first time the integrated planning problem, based on the Lagrangian decomposition.
Then there comes the work of [9], which have also used the works of Nourelfath et al [10] and Aghezzaf et al [8] to study systems with parallel components considering economic and stochastic (failure of common causes FCC) dependences.
In another context, Najid et al [12] proposed a joint production and maintenance planning model for a production system subject to random failures taking into account reliability parameters of the system and its capacity.
Yalaoui et al [11] say that if we know the maintenance cycle T and the probability distribution of failures we can express its value in function of the interval number per cycle T with number of periods: Production System We worked on the modeling of classic lot-sizing problem with finite capacity (denoted MCLS: Multi-item capacitated lot-sizing problem with setup times and Shortage costs) by introducing the cost of breaking on demand, our work consists of determining a production plan of a set of references R, for a planning horizon composed of N long periods (big buckets).
Online since: October 2014
Authors: Sergey Dub, Tatiana Prikhna, Vladimir Sverdun, Thierry Cabioc’h, Tetyana Basyuk, Artem Kozyrev, Alexandra Starostina, Valeriy Kovylaev, Orest Ostash, Doris Litzkendorf, Matvey Loshak, Patrick Chartier, Victor Moshchil, Myroslav Karpets, Dmitriy Turkrvich, Wolfgang Gawalek
Commercial Ti, Al, AlN and TiC powders were carefully weighed to obtain the nominal compositions: 2 Ti: 1.1 Al: x C: (1-x) N.
Petrusha et al.
Kosolapova, The study of abrasive properties of turnery compounds in Ti–Al–C and Ti–Al–N systems (Issledovanie abrazivnyh svoystv troynyh soedineniy v sistemah Ti–Al–C i Ti–Al–N, in Russian), Powder Metallurgy, 8 (1976) 56–59
El-Raghy, M.
Ferreira, Combustion synthesis of ternary carbide Ti3AlC2 in Ti–Al–C system, J.
Petrusha et al.
Kosolapova, The study of abrasive properties of turnery compounds in Ti–Al–C and Ti–Al–N systems (Issledovanie abrazivnyh svoystv troynyh soedineniy v sistemah Ti–Al–C i Ti–Al–N, in Russian), Powder Metallurgy, 8 (1976) 56–59
El-Raghy, M.
Ferreira, Combustion synthesis of ternary carbide Ti3AlC2 in Ti–Al–C system, J.
Online since: June 2024
Authors: Rosemary Adedokun, Bala Anegbe, Shephrah Olubusola Ogungbesan, James Okuo, Samuel Abayomi Ayesa, Edidiong Emmanuel Ikpe
This trend was observed by Okuo et al. [3]. and Wang et al. (64) pH is very vital in the adsorption process.
El-Subruiti, A.
El-Sharkawy, H.
Al-Farraj, A.M.
Abo El -Ela, H.Abd El-Raheem, A.
El-Subruiti, A.
El-Sharkawy, H.
Al-Farraj, A.M.
Abo El -Ela, H.Abd El-Raheem, A.