STUDIES OF MOLYBDENA-ALUMINA CATALYSTS. I. THE FORMATION OF MO(V) IN REDUCED MOO₃-AL₂O₃ SYSTEMS AND THE DETERMINATION OF ITS ABSOLUTE CONCENTRATION BY ESR TECHNIQUESSESHADRI KS; PETRAKIS L.1973; J. CATALYS.; U.S.A.; DA. 1973; VOL. 30; NO 2; PP. 195-203; BIBL. 18 REF.Article

FREE RADICALS IN COALS AND COAL CONVERSION. III: INVESTIGATION OF THE FREE RADICALS OF SELECTED MACERALS UPON PYROLYSISPETRAKIS L; GRANDY DW.1981; FUEL (GUILDF.); ISSN 0016-2361; GBR; DA. 1981; VOL. 60; NO 2; PP. 115-119; BIBL. 21 REF.Article

THE UTILIZATION OF NUCLEAR MAGNETIC RESONANCE SPECTROSCOPY FOR PETROLEUM, COAL, OIL SHALE, PETROCHEMICALS, AND POLYMERS. PHENOMENOLOGY, PARADIGMS OF APPLICATIONS, AND INSTRUMENTATIONPETRAKIS L; EDELHEIT E.1979; APPL. SPECTROSC. REV.; USA; DA. 1979; VOL. 15; NO 2; PP. 195-260; BIBL. 158 REF.Article

FREE RADICALS IN COALS AND COAL CONVERSION. IV: INVESTIGATION OF THE FREE RADICALS IN SELECTED MACERALS UPON LIQUEFACTIONPETRAKIS L; GRANDY DW.1981; FUEL (GUILDF.); ISSN 0016-2361; GBR; DA. 1981; VOL. 60; NO 2; PP. 120-124; BIBL. 15 REF.Article

THE NATURE AND ROLE OF FREE RADICALS IN COAL CONVERSION PROCESSES AS REVEALED BY E.S.R. STUDIESPETRAKIS L; GRANDY DW.1981; PHILOS. TRANS. R. SOC. LOND. SER. A. MATH. PHYS. SCI.; ISSN 0080-4614; GBR; DA. 1981; VOL. 300; NO 1453; PP. 83-87; BIBL. 7 REF.Article

NUCLEAR MAGNETIC RESONANCE AND INFRARED INVESTIGATION OF ADSORBED PYRIDINE AND THIOPHENE ON MOLYBDENA MODIFIED ALUMINAPETRAKIS L; KIVIAT FE.1976; J. PHYS. CHEM.; U.S.A.; DA. 1976; VOL. 80; NO 6; PP. 606-611; BIBL. 11 REF.Article

FORMATION OF THIANTHRENE RADICAL CATIONS ON MOLYBDENA-ALUMINA SURFACESPETRAKIS L; SESHADRI KS.1975; J. CATALYS.; U.S.A.; DA. 1975; VOL. 36; NO 3; PP. 351-355; BIBL. 8 REF.Article

AN ELECTRON SPIN RESONANCE SPECTROMETRIC INVESTIGATION OF NATURAL, EXTRACTED AND THERMALLY ALTERED KEROGENOUS MATERIALSPETRAKIS L; GRANDY DW.1980; GEOCHIM. COSMOCHIM. ACTA; GBR; DA. 1980; VOL. 44; NO 5; PP. 763-768; BIBL. 11 REF.Article

E.S.R. INVESTIGATION OF FREE RADICALS IN SOLVENT-REFINED-COAL MATERIALSGRANDY DW; PETRAKIS L.1979; FUEL; GBR; DA. 1979; VOL. 58; NO 3; PP. 239-240; BIBL. 12 REF.Article

ELECTRON SPIN RESONANCE SPECTROMETRIC STUDY OF FREE RADICALS IN COALS.PETRAKIS L; GRANDY DW.1978; ANAL. CHEM.; U.S.A.; DA. 1978; VOL. 50; NO 2; PP. 303-308; BIBL. 30 REF.Article

FREE RADICALS IN COAL AND COAL CONVERSIONS. VII: AN IN-DEPTH EXPERIMENTAL INVESTIGATION AND STATISTICAL CORRELATIVE MODEL OF THE EFFECTS OF RESIDENCE TIME, TEMPERATURE AND SOLVENTSPETRAKIS L; GRANDY DW; JONES GL et al.1982; FUEL (GUILDF.); ISSN 0016-2361; GBR; DA. 1982; VOL. 61; NO 1; PP. 21-28; BIBL. 11 REF.Article

PETROLEUM IN THE MARINE ENVIRONMENTPETRAKIS L ED; WEISS FT ED.1980; ADV. CHEM. SER.; USA; DA. 1980; NO 185; X-371 P.; BIBL. DISSEM.Conference Paper

DEGRADATION OF PETROLEUM BY AN ALGA, PROTOTHECA ZOPFIIWALKER JD; COLWELL RR; PETRAKIS L et al.1975; APPL. MICROBIOL.; U.S.A.; DA. 1975; VOL. 30; NO 1; PP. 79-81; BIBL. 7 REF.Article

MICROBIAL PETROLEUM DEGRADATION. APPLICATION OF COMPUTERIZED MASS SPECTROMETRYWALKER JD; COLWELL RR; PETRAKIS L et al.1975; CANADA. J. MICROBIOL.; CANADA; DA. 1975; VOL. 21; NO 11; PP. 1760-1767; ABS. FR.; BIBL. 16 REF.Article

FREE RADICALS IN COAL AND COAL CONVERSIONS. IX: STATISTICAL CORRELATIVE MODELS OF THE EFFECT OF PROCESS VARIABLES ON HYDROLIQUEFACTION PRODUCTSPETRAKIS L; JONES GL; GRANDY DW et al.1983; FUEL (GUILDFORD); ISSN 0016-2361; GBR; DA. 1983; VOL. 62; NO 6; PP. 671-680; BIBL. 16 REF.Article

FREE RADICALS IN COAL AND COAL CONVERSIONS. VIII: EXPERIMENTAL DETERMINATION OF CONVERSION IN HYDROLIQUEFACTIONPETRAKIS L; GRANDY DW; JONES GL et al.1983; FUEL (GUILDFORD); ISSN 0016-2361; GBR; DA. 1983; VOL. 62; NO 6; PP. 665-670; BIBL. 15 REF.Article

ESR AND XPS INVESTIGATION OF A MO-NAL₂O₃ MODEL CATALYST SYSTEM AND ITS INTERACTION WITH ADSORBED AROMATICSPETRAKIS L; MEYER PL; DEBIES TP et al.1980; J. PHYS. CHEM.; ISSN 0022-3654; USA; DA. 1980; VOL. 84; NO 9; PP. 1020-1029; BIBL. 36 REF.Article

BIODEGRADATION RATES OF COMPONENTS OF PETROLEUM.WALKER JD; COLWELL RR; PETRAKIS L et al.1976; CANAD. J. MICROBIOL.; CANADA; DA. 1976; VOL. 22; NO 8; PP. 1209-1213; ABS. FR.; BIBL. 9 REF.Article

ESR INVESTIGATION OF RADICAL CATIONS FORMED FROM AROMATICS AND HETEROAROMATICS ADSORBED ON MO-AL₂O₃ SURFACESPETRAKIS L; MEYER PL; JONES GL et al.1980; J. PHYS. CHEM.; ISSN 0022-3654; USA; DA. 1980; VOL. 84; NO 9; PP. 1029-1038; BIBL. 27 REF.Article

FREE RADICALS IN COAL AND COAL CONVERSIONS. V: METHODOLOGY FOR THE IN-SITU INVESTIGATION OF FREE RADICALS IN COAL DEPOLYMERIZATION UNDER SRC-II PREHEATER REACTOR CONDITIONSPETRAKIS L; GRANDY DW; RUBERTO RG et al.1981; FUEL (GUILDF.); ISSN 0016-2361; GBR; DA. 1981; VOL. 60; NO 11; PP. 1013-1016; BIBL. 17 REF.Article

ANALYTICAL CHEMISTRY OF PETROLEUM: AN OVERVIEW OF PRACTICES IN PETROLEUM INDUSTRY LABORATORIES WITH EMPHASIS ON BIODEGRADATIONPETRAKIS L; JEWELL DM; BENUSA WF et al.1980; ADV. CHEM. SER.; USA; DA. 1980; NO 185; PP. 23-53; BIBL. 38 REF.Conference Paper

EVALUATION OF PETROLEUM-DEGRADING POTENTIAL OF BACTERIA FROM WATER AND SEDIMENTWALKER JD; COLWELL RR; PETRAKIS L et al.1975; APPL. MICROBIOL.; U.S.A.; DA. 1975; VOL. 30; NO 6; PP. 1036-1039; BIBL. 9 REF.Article

CATALYTIC HYDROPROCESSING OF SRC-II HEAVY DISTILLATE FRACTIONS. I: PREPARATION OF THE FRACTIONS BY LIQUID CHROMATOGRAPHYPETRAKIS L; RUBERTO RG; YOUNG DC et al.1983; INDUSTRIAL AND ENGINEERING CHEMISTRY. PROCESS DESIGN AND DEVELOPMENT; ISSN 0019-7882; USA; DA. 1983; VOL. 22; NO 2; PP. 292-298; BIBL. 11 REF.Article

FREE RADICALS IN COAL AND COAL CONVERSIONS. X: KINETICS AND REACTION PATHWAYS IN HYDROLIQUEFACTIONPETRAKIS L; JONES GL; GRANDY DW et al.1983; FUEL (GUILDFORD); ISSN 0016-2361; GBR; DA. 1983; VOL. 62; NO 6; PP. 681-689; BIBL. 22 REF.Article

Estimating thermophysical properties of coal liquids using NMR spectraALLEN, D. T; PETRAKIS, L.NATO ASI series. Series C, Mathematical and physical sciences. 1988, Vol 244, pp 187-196Conference Paper