Deposits of clastic carbonate-dominated (calciclastic) sedimentary slope systems in the rock record have been identified mostly as linearly-consistent carbonate apron deposits, even though most ancient clastic carbonate slope deposits fit the submarine fan systems better. Calciclastic submarine fans are consequently rarely described and are poorly understood. Subsequently, very little is known especially in mud-dominated calciclastic submarine fan systems. Presented in this study are a sedimentological core and petrographic characterisation of samples from eleven boreholes from the Lower Carboniferous of Bowland Basin (Northwest England) that reveals a >250 m thick calciturbidite complex deposited in a calciclastic submarine fan setting. Seven facies are recognised from core and thin section characterisation and are grouped into three carbonate turbidite sequences. They include: 1) Calciturbidites, comprising mostly of highto low-density, wavy-laminated bioclast-rich facies; 2) low-density densite mudstones which are characterised by planar laminated and unlaminated muddominated facies; and 3) Calcidebrites which are muddy or hyper-concentrated debrisflow deposits occurring as poorly-sorted, chaotic, mud-supported floatstones. These

Phd by thesis

The American Society for Testing and Materials (ASTM) is an independent organization devoted to the development of standards.

American Society for Testing and Materials

Much has been written about theory and practice in the law, and the tension between practitioners and theorists. Judges do not cite theoretical articles often; they rarely "apply" theories to particular cases. These arguments are not revisited. Instead the Essay explores the working and interaction of theory and practice, practitioners and theorists. The Essay starts with a story about solving a legal issue using our intellectual tools - theory, practice, and their progenies: experience and "gut." Next the Essay elaborates on the nature of theory, practice, experience and "gut." The third part of the Essay discusses theories that are helpful to practitioners and those that are less helpful. The Essay concludes that practitioners theorize, and theorists practice. They use these intellectual tools differently because the goals and orientations of theorists and practitioners, and the constraints under which they act, differ. Theory, practice, experience and "gut" help us think, remember, decide and create. They complement each other like the two sides of the same coin: distinct but inseparable.

Of Theory and Practice

Über die Adsorption in Lösungen

Chem. Pharm. Bull.(オピニオン)

1 Laboratoire d’Ingénierie des Matériaux, de Modélisation et d’Environnement, LIMME, Faculté des Sciences Dhar El Mahraz, Université Sidi Mohammed Ben Abdellah, USMBA, BP 1796 – 30000, Atlas – Fès, Morocco. 2 LCAE-URAC18, Faculté des Sciences, Université Mohammed Premier, BP 717 – 60000, Oujda, Morocco. 3 Laboratoire des Matériaux, Electrochimie et Environnement, Faculté des Sciences, Université Ibn Tofaîl, BP. 133 – 14000, Kénitra, Morocco. 4 Department of Chemistry, College of Science, King Saud University, B.O. 2455, Riaydh11451, Saudi Arabia. 5 Laboratoire de Chimie Organique Hétérocyclique, Pôle de Compétences Pharmacochimie, Faculté des Sciences, Université Mohammed V Raba ــ Morocco. * E-mail: msfaira@yahoo.com

Substitution Effect of two Oxygen Atoms by Sulphur Atoms in New Synthesized Benzodiazepine Molecules towards Mild Steel Corrosion Inhibition in Hydrochloric Acid

The commercial bupirimate pesticide (5-butyl-2-(ethylamino)-6-methyl-4-pyrimidinyl dimethyl sulfamate) is widely used for crop production and fruit tree treatment, but this disposal cause serious environmental problems. This work presents an electrochemical oxidative removal of this pesticide by an electrolysis system on a boron-doped diamond (BDD) anode and platinum cathode. A number of experiments were run and the results are presented. The achieved reductions were 74% and 52% for 2% NaCl and 3% NaCl respectively. The chemical oxygen demand (COD) of bupirimate solution was observed to fall with pseudo first-order kinetics. As a conclusion, electrochemical oxidation could be used as a pretreatment stage for detoxification of toxic wastes with bupirimate.

Detoxification of Bupirimate Pesticide in Aqueous Solutions by Electrochemical Oxidation

The extraction of metals from supports based on calcium phosphate was investigated; we conducted experiments with metal solutions at various concentrations, and using two carriers’ calcium phosphate hydroxyapatite and hydroxyapatite in the presence of polyethylene glycol polymer. The results show a metal retention of selectivity with excellent yields. The kinetic study shows that the extraction equilibrium is fast for both matrices used. The present work relates to the adsorption of metal ions of cadmium, cobalt and copper. The adsorptive capacity of calcium phosphates been interpreted in terms of adsorption isotherms by exploiting both the Langmuir and Freundlich model. The highest adsorption quantities are improved out in the presence of PEG and reached 0.7 mmol / g, 0.66 mmol / g and 0.62 mmol / g respectively for the cadmium, copper and cobalt.

Contribution of adsorption of metals using calcium phosphates in the presence of support polyethylene glycol

Les eaux souterraines de la plaine des Triffa (Basse Moulouya) deviennent de plus en plus polluees. Les resultats analytiques montrent que la plupart des puits sont charges en sels et en nitrates, donc impropres a la consommation humaine et peuvent avoir un effet negatif sur les cultures maraicheres de la region. Dans la zone etudiee, des teneurs de 2,32 a 174,70 mg/l de NO3-, de 134 a 3614 mg/l de Cl- et de 103 a 1518 mg/l de Na+ ne sont pas exceptionnelles. Elles depassent largement les normes fixees par l’OMS et la CEE (50 mg/l pour les NO3 -, de 250 mg/l pour Cl- et de 175 mg/l pour Na+). L’intensification de l’agriculture dans la plaine, notamment dans les perimetres irrigues, l’epandage excessif des engrais, les applications repetees, et a quantites fortes, de fumiers, l’irrigation, les precipitations et la remontee de la nappe dans certaines regions ont engendre une pollution croissante des ressources en eau.

Salinité et pollution par les nitrates des eaux souterraines de la plaine des Triffa

The B3LYP/6-31G(d,p) calculations were conducted to establish a correlation between structural electronic properties and corrosion inhibition efficiencies of four quinoxaline derivatives. The Fukui functions reflecting the local reactivity centers were investigated to determine the Fe-complexes by the studied ligands. Three spin multiplicities were examined and the quintet complexes were the most stable. Five types of interactions between Fe and quinoxaline compounds were studied, i.e., Fe–2S, Fe–2O, Fe–ϕ, Fe–S, and Fe–O among 10 complexes. While the calculated binding energies of the chelating bidentate complexes Fe–2O/2S were the lowest, Fe–ϕ presented a higher energy value without loss of aromaticity.

Belkheir Hammouti

Papers

Substitution Effect of two Oxygen Atoms by Sulphur Atoms in New Synthesized Benzodiazepine Molecules towards Mild Steel Corrosion Inhibition in Hydrochloric Acid

Detoxification of Bupirimate Pesticide in Aqueous Solutions by Electrochemical Oxidation

Contribution of adsorption of metals using calcium phosphates in the presence of support polyethylene glycol

Salinité et pollution par les nitrates des eaux souterraines de la plaine des Triffa

Reactivity and Fe complexation analysis of a series of quinoxaline derivatives used as steel corrosion inhibitors