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 Judges do not cite theoretical articles often; they rarely "apply" theories to particular cases.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)

The effect of the mixture of various concentrations of KI and Mentha pulegium extract on the corrosion of steel in 1M HCl has been investigated using weight loss methods. The study revealed that steel is more efficiently inhibited by M. pulegium in the presence of KI than a pure extract of M. pulegium. The inhibition efficiencies increased with an increased concentration of the additives. The highest inhibition efficiency of 84.34 % was observed with single M. pulegium extract at 33 %. An improved inhibition efficiency of 90.59 % was observed with the mixture of 33 % M. pulegium extract and 3 mM KI at 298 K in 1M HCl. Inhibition efficiency increased with temperature from 308–338 K. The adsorption of inhibitor molecules on the metal surface followed Temkin isotherm.

Synergistic effect of potassium iodide in controlling the corrosion of steel in acid medium by Mentha pulegium extract

(2Z)-1-(4-chlorophenyl)-2-[(3E)-3-[2-(4-chlorophenyl)-2-oxoethylidene]-3,4dihydro quinoxalin- 2 (1H)-ylidene]ethanone (Q4) was tested as inhibitor for the corrosion of copper in 2M HNO3 using gravimetric method at 303 – 343 K. The inhibitor (Q4) showed about 90% inhibition efficiency (E (%)) at an optimum concentration of 10-3M. The inhibition efficiency increases with increase in inhibitor concentration but decrease with rise in temperature. Various parameters (Ea, DG° ads, Kads) for adsorption reveal a strong interaction between inhibitor and copper surface. The negative values of DG° ads indicate the spontaneous adsorption of the inhibitor on copper surface. Kinetic parameters activation such as Ea , DHa° , a DS° and pre-exponential factor have been calculated and discussed. Further, theoretical calculations were carried out and relations between computed parameters and experimental inhibition efficiency were discussed.

N-containing organic compound As An Effective Corrosion Inhibitor For Copper In 2M HNO3 : Weight Loss and Quantum Chemical Study

3-amino-2-phenylimidazo[1,2-a]pyridine (P3) newly synthesised was tested as corrosion inhibitor of C38 steel in 1M HCl using weight loss method, potentiodynamic polarisation and electrochemical impedance spectroscopy (EIS) measurements. Gravimetric essays indicate that P3 inhibits the corrosion of steel. The effect is more pronounced with increasing of P3 concentration. The inhibition efficiency attains 92.8 % at the 10-3M. P3 affects both cathodic and anodic current and then limits H+ reduction and iron dissolution. P3 may be classified as a mixed inhibitor. EIS diagrams show that adsorption of P3 increases the transfer resistance and decrease the capacitance of interface metal/solution. Langmuir isotherm is the best fitted adsorption one to describe P3 action on steel surface. The negative values of DG° ads indicate the spontaneous adsorption of the inhibitor on steel surface. Both kinetic parameters (activation energy, pre-exponential factor, enthalpy of activation and entropy of activation) were calculated and discussed.

The Role of 3-Amino-2-Phenylimidazo[1,2-a]Pyridine as Corrosion Inhibitor for C38 Steel in 1M HCl

The inhibition of ethyl 2-(4-(2-ethoxy-2-oxoethyl)-2-p-tolylquinoxalin-1(4H)-yl)acetate (Q3) on the corrosion of carbon steel in 1.0 M HCl at 308-343 K was studied by gravimetric method. Results obtained show that Q3 acts as inhibitor for carbon steel in hydrochloric solution. The inhibition efficiency was found to increase with increase in Q3 but decreased with temperature, which is suggestive of physical adsorption mechanism although chemisorption may play a part. The adsorption of Q3 onto the carbon steel surface was found to follow the Langmuir adsorption isotherm. Both kinetic parameters (activation energy, pre-exponential factor, enthalpy of activation and entropy of activation) and thermodynamics of adsorption (enthalpy of adsorption, entropy of adsorption and Gibbs free energy) were calculated and discussed.

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Belkheir Hammouti

Papers

Synergistic effect of potassium iodide in controlling the corrosion of steel in acid medium by Mentha pulegium extract

N-containing organic compound As An Effective Corrosion Inhibitor For Copper In 2M HNO3 : Weight Loss and Quantum Chemical Study

The Role of 3-Amino-2-Phenylimidazo[1,2-a]Pyridine as Corrosion Inhibitor for C38 Steel in 1M HCl

Inhibitive properties and thermodynamic characterization of quinoxalinederivative on carbon steel corrosion in acidic medium

Improving corrosion inhibition potentials using two triazole derivatives for mild steel in acidic medium: Experimental and theoretical studies