Zobrazeno 1 - 10
of 271
pro vyhledávání: '"NORMAN HACKERMAN"'
Evaluating and Improving Undergraduate Teaching in Science, Technology, Engineering, and Mathematics
Autor:
National Research Council, Division of Behavioral and Social Sciences and Education, Center for Education, Committee on Recognizing, Evaluating, Rewarding, and Developing Excellence in Teaching of Undergraduate Science, Mathematics,, Norman Hackerman, Marye Anne Fox
Economic, academic, and social forces are causing undergraduate schools to start a fresh examination of teaching effectiveness. Administrators face the complex task of developing equitable, predictable ways to evaluate, encourage, and reward good tea
Publikováno v:
Electrochimica Acta. 53:6024-6032
The efficiency of three furan derivatives (2-methylfuran, furfuryl alcohol and furfurylamine), as corrosion inhibitors for carbon steel in 1 M HCl, has been determined by gravimetric and electrochemical measurements. These compounds inhibit corrosion
Publikováno v:
Journal of Solid State Electrochemistry
The inhibiting effect of cobalt(III) complexes with macrocyclic ligand cyclam (1,4,8,11-tetraazacyclotetradecane) and β-diketonato ligands have been investigated on iron corrosion in 0.1 M HClO 4 by potentiodynamic, linear polarization resistance (L
Autor:
Karel Olysar, Vladimir Machovic, Mohammed Bazzaoui, Norman Hackerman, Eva Machnikova, Martina Pazderova
Publikováno v:
ECS Transactions. 2:19-29
Electrochemical synthesis of pyrrole on mild steel substrate was carried out by potentiodynamic and galvanostatic techniques from neutral aqueous sodium tartrate medium. Homogenous and adherent PPy layer was achieved by galvanostatic technique at cur
Publikováno v:
Corrosion Science. 48:3014-3034
A new class of corrosion inhibitors for iron demonstrated by group of cobalt complex com- pounds, of the general formula (Co III (Rdtc)cyclam)(ClO4)2 (1)-(4) where cyclam is 1,4,8,11-tetraaza- cyclotetradecane and Rdtcrefer to piperidine-, 2-, 3- or
Publikováno v:
Anti-Corrosion Methods and Materials. 53:19-29
PurposeThe objective in the present paper is a better understanding of acidic corrosion inhibition by polypyrazolylborates on iron electrodes. Structural and electronic effects of these compounds are discussed in relation to the inhibiting efficienci
Publikováno v:
Electrochimica Acta. 50:2515-2520
Quantum chemical calculations were performed on azacyclo C5 to C14 amines, open chain C6 to C14 amines and phenylazacyclo C5 to C14 amines. Inspection of the calculated parameters and corrosion inhibition efficiencies were made to observe any clear l
Publikováno v:
Applied Surface Science. 240:327-340
The inhibiting properties of four macrocyclic cobalt(III) complexes of the general formula [CoIII(Rdtc)cyclam](ClO4)2, where cyclam and Rdtc− refer to 1,4,8,11-tetraazacyclotetradecane and morpholine-, thiomorpholine-, piperazine-, N-methylpiperazi
Publikováno v:
Anti-Corrosion Methods and Materials. 52:11-21
PurposeWork reported in the present paper investigated the inhibiting properties of a number of N‐heterocyclic amines in 0.1 mol/l HClO4. An attempt also was made to correlate some molecular parameters of these compounds with their corrosion inhibi
Publikováno v:
Journal of Solid State Electrochemistry. 9:483-497
The effect of a 1H-1,2,3-triazole, 1,2,3-benzotriazole and a number of substituted benzotriazoles, namely 1-hydroxybenzotriazole, 1H-benzotriazole-1-methanol and N-(1H-benzotriazol-1-ylmethyl)-formamide, have been investigated with respect to the cor