r Convegno Internazionale su ( Aspetti Biologici dell' Elettrochimica" by Prof. G.B. MARINI BETTOLO Istituto Superiore di Sanita, Roma, Italy Sono lieto di porgere il benvenuto a quanti da varie parti del mondo e precisamente da 22 paesi di quattro continenti, sono accorsi qui a Romi!. per partecipare a questa primo Simposio Intemazionale sugli " Aspetti Bio logici dell'Elettrochimica ", accogliendo l'invito del Comitato Intemazionale di Termodinamica e Cinetica Elettrochimiche e dell'Istituto Superiore di SanitiL L'Istituto Superiore di Sanita., che ha come suo scopo 10 studio e la ricerca per la tutela della sanita. pubblica, ha sempre favorito e promosso gli incontri di scienziati e ricercatori di tutto i1 mondo su temi di interesse attuale ed in rapida evoluzione che attenessero alle ricerche sia di base che applicate nel campo delle scienze biomediche. si sono svolti in questa stessa Questo Simposio fa seguito ad altri che sede, anche essi su temi di viva attualita., dai metodi di produzione di nuovi antibiotici agli aspetti tossicologici dell'impiego degli additivi, ai me todi moderni di analisi dei farmaci, al meccanismo delle protezioni dalle radiazioni ionizzanti sulla materia vivente. Tutti questi incontri hanno avuto una comune caratteristica, sia pure nella grande eterogeneita dei temi, quella di riunire cultori e specialisti di varie parti della scienza e della tecnologia per concorrere alla soluzione di un unico problema interdisciplinare.

Inhalt
Plenary Lectures.- Thermodynamische Aspekte Organischer Redoxreaktionen von Biologischem Interesse.- Electrochemical Energetics of Elementary Steps in Biochemical Redox Processes Involving Energy Storage.- Streaming Potentials: Theory and Examples in Biological Systems.- Electrochemical Investigation of Kinetic and Allied Aspects of Biological Redox Reactions.- Membrane Conductances and Electric Potentials in Excitable Living Tissues.- Thermodynamics, Structure and Dissipation.- Coupling Between Electron Flow and Ion Translocation in the Inner Mitochondrial Membrane.- Communications.- A Hypothetical Explanation of Anomalous Polarographic Behaviour of Protein Solutions.- Polarographic Reduction of the Heme Iron in Native Horse-Heart Cytochrome c.- Charge Injection into Bilayer Lipid Membranes During Redox Reactions on the Surface.- A Membrane Model for Bioelectric Oscillations.- An Asymmetric Membrane System as a Means of Studying Interactions in Living Cells.- Chronopotentiometric Evaluation of Membrane Performance.- Corrosion Bacterielle du Nickel et du Zinc par Differents Milieux Nutritifs Doux et Marins.- The Redox Behavior of Biological Quinones and its Relation With the Mitochondrial Respiratory Chain.- The Conformational Model of Excitable Cellular Membranes.- Overvoltage and Solid State Kinetics of Reactions at Biological Interfaces.- Electrochemical Model Processes for Reductive Cleavage of the Cobalt-Carbon Bond.- Transepithelial Potential Difference Induced by Amphotericin B; NaCl-NaHCO3 Pump Localization in Gall Bladder.- Mechanism of Electrochemical Reduction of 2-Pyrimidone, Cytosine and Cytidine.- A Study of the Behavior of Some Ethyl-Bromide-Based Liquid Membranes.- Instability Observed at a Liquid-liquid Interface Containing Surface-active Compounds.- Activity Standards for Ion-Selective Electrodes.- Non Equilibrium Thermodynamic Analysis of Ion Transport and Membrane Metabolism.- Etude de Nouvelles Aci-reductones Apparaissant au Cours de la Décarboxylation de l'Acide Dihydroxyfumarique.- Etude d'une Aci-reductone Sulfurée: l'Acide ?-Mercaptopyruvique.- Linear Transport Coefficients in a Cation-Exchange Membrane.- Cinetique de l'Electroadsorption et de la Polarisation à l'Interface Entre Certaines Solutions Ioniques Non Miscibles.- Polarisation des Interfaces Entre Solutions Ioniques Non Miscibles: Effet «Accumulateur», Conductances Differentielles Negatives.- Electrochemical Behavior of 3,3?-Methylenebis-(4-hydroxycoumarine) (dicoumarol) Derivatives in DMF.- Polarographic Research of Proteins and Related Substances.- Redox Potential Measurements in Microbiological Media and Some Applications.- Organic Oxidation-Reduction Systems as Electrochemical Indicators for Monitoring in Organs in Vivo.- The Redox Mechanism of the Pterine-Hydropterine System.- On the Nature of Polarographic Protein Waves.- Electrochemistry of Some 4-Substituted Quinazolines and 6-Substituted Purines.- Comparative Electrochemical Study of B 12 and Cobalt-Porphyrin Compounds.- Effect of X and ?-Irradiation on Hemoglobin A Redox System.- Electrochemical Aspects of Electron Transfer in Mitochondrial Respiratory Chains.- Mass Transfer of a Reactive Minor Species in a Battery.- Studies of Exitation of Multicomponent Media.- Transport of Ions Across Adsorbed Monolayers at the Amalgam | Water and Calomel | Water Interfaces.- Physico-chemical Properties of Some Organic Compounds of Biological Interest. I.- Physico-chemical Properties of Some Organic Compounds of Biological Interest. II.- Pseudocapacitance Caused by Sulfide-DisulfideOxyreduction in Adsorbed Layers.- Polarography of 2-Diethylaminoethanethiol Hydrochloride.- The Carcinogenic Activities of the Photoproducts of 3-Methylcholanthrene and Their Polarographic Properties.- Control Mechanisms of Anion Distribution Across the Mitochondrial Membrane.- Reaction of Adsorbed RNAse on a Mercury Electrode.- On the Role of Substrate Diffusion in Enzyme Electrodes.- Electrochemical Studies on the Complexes of Cadmium with Thiodipropionic Acid at D.M.E. in Aqueous and Aquo-Nonaqueous Media.- Polarographic Investigation of Enzymic DNA Degradation.- Polarographic Changes Accompanying the Re-Formation of Tobacco Mosaic Virus Capsid from Its Disordered Polypeptide Chains.- Electrochemical Studies of Flavins and of Metal-Flavin Interaction in Aprotic Solvents.- Polarographic Behavior of Ethylthioglycolate at the Dropping Mercury Electrode.- Polarographic Study of Nickel (II) in Ethyl Thioglycolate Media.- Electrochemical Properties of Redox Compounds as Solutes in Liquid Models of Peptidic Media.- Stabilite Chimique et Hydrodynamique des Systemes Electrochimiques.- Electrochemical Properties and Biological Activity of Nitrofurans.- Streaming Potentials During Hyperfiltration.- Electrochemical Properties of Model Compounds of Nicotinamide-adenine-dinucleotide in Aqueous Solution.- Electrochemical Properties of Model Compounds of Nucleic Heterocycles in Aqueous Solutions.- A Biological Fuel Cell Using a Strain of Micrococcus Cerificans Metabolizing n-Hexadecane.- A Biologically Regenerated Redox Half-Cell.- The Concentration-Clamp Method for Transport Measurements in Membranes.- Isatin as Catalyst for the Anodic Oxidation of Amino-Acids.- The Symposium: A Retrospect.