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Romanian Version

Valeriu Jinescu, University Professor

Valeriu V. Jinescu
University Professor
Head of Process Equipment Department
Polytechnica University of Bucharest

Born: June 10, 1940, Ruseni, Hotin County, Romania (presently in Ukraine)

Married to Gheorghita JINESCU, Prof. Dr. Eng. at the Faculty of Industrial Chemistry, Polytechnica University of Bucharest; two sons: Cosmin, born on January 28, 1969, engineer and George, born on February 3, 1971, surgeon and assistant to the Surgery Clinic of the Emergency Hospital, Bucharest


  • 1963 - Dipl. Engineer, Faculty of Mechanics, in the field of Chemical Equipment, Polytechnic Institute of Bucharest, G.P.A. 9,44.
  • 1968 - 1972 - Ph. D. studies and dissertation at the Polytechnic Institute of Bucharest in the field of Chemical Equipment. Subject of Ph.D. Thesis: “Contributions to Single Screw Extruder Theory for Polymer Processing”, supervisor Prof. M. Renert
  • Specialization, International Center of Mechanical Sciences, Udine, Italy, 1974
  • Specialization, University of Liège, 1977
  • Specialization at ETH Zürich, September 1997

Professional Activity

  • 1963-1971 - University Assistant, Chair of Chemical Engineering, Polytechnic Institute of Bucharest
  • 1972-1973 - Head of Works, Chair of Chemical Engineering, Polytechnic institute of Bucharest
  • 1973-1976 - Head of Works, Chair of Chemical Equipment
  • 1976-1990 - Assistant Professor, Chair of Chemical Equipment
  • Since 1990 - University Professor, Chair of Process Equipment, Faculty of Mechanical Engineering, Polytechnica University of Bucharest

Teaching Activity

  • Professor,  Process Equipment Department, Faculty of Mechanical Engineering, Polytechnica University, Bucharest
  • Head of Process Equipment Department, Faculty of Mechanical Engineering, Polytechnica University, Bucharest (1975-1985 and again since 1992)
  • Main teaching courses
    • “Process Equipment”
    • “Polymer Processing Equipment”
    • “Applied Rheology”
    • "Thermomechanics and Dynamics of Mechanichal Structures"
  • Plenary Lectures: at the “Hochpolymerentagung”(Karl Marx Stadt, DDR, 1973); Third Congress of Chemistry (Bucharest, 1988)
  • Scientific Guidance for Ph.D. Degree in Chemical Equipment (1985-2000) and Engineering Sciences, Specialty Mechanical Engineering since 2000

Research Activity

  • Research Fields
    • fundamental fields: Material Behavior; Effects superposition in the case of non-linear materials; Principles of Energy; Structures Thermo-Mechanics
    • applied fields: Applied Rheology; Polymer Extrusion and Screw Extruders; Creep and Fatigue, Mixing Devices, Pressure Vessels
  • Significant scientific achievements
    • discovered and enounced four general principles of nature:
      • principle of reluctance (1983)
      • principle of critical energy (1984)
        Over 20 papers published about the numerous applications of this principles, included in the volume Energonica (1997). This principle introduces the concept of specific energy related to the critical state of the matter, recently proposed to be called Jinescu criterion (see Revista de Chimie/Revue of Chemistry, 50, no. 7, 1999, p. 473-479 and the English Edition no. 1, 2000, p. 13-19). Also, the Principle and its applications were presented through the conferences delivered in 1994 at Clemson University and Duke University, USA, as well as in a paper presented at the Polymer Processing Society International Conference, at Sorento, Italy (May 1996)
      • principle of energy accessibility (1997)
      • principle of irreversibility (1999)
        For the principle of irreversibility was awarded the Prize of Revista de Chimie in 1999
    • Discovered and enounced the following general laws:
      • laws of critical state of the matter (1997)
      • laws of transient regimes (1997)
      • law of coexistence and complementarity of order and disorder (2001)
      • law of processes and phenomena equivalence (2001).
The principles and laws enounced have applications in engineering sciences, in physics, physiology, biology etc
  • Significant engineering achievements

    Research contracts for industrial applications: 65

    As project coordinator, elaborated the execution projects for:

    • installation for polyethylene blown films extrusion
    • vacuum molding installation
    • laboratory extruder
    • capillary rheometer etc

    Patents: 4

Publishing Activity

  • 19 books published in Romanian, of which 9 for university and post-graduate studies, 6 for university studies and 4 for high schools. Among them:
    • “Energonica”, "Semne" Publishing House, Bucharest, 1997
    • "Process Equipment”, 4 volumes, Technical Publishing House, Bucharest, 1983, 1984, 1988 and 1989
    • “Calculus and Construction of Chemical and Petrochemical Equipment”, Didactic and Pedagogical Publishing House, Bucharest, 1983
    • “Column Type Apparatus”, Technical Publishing House, Bucharest, 1978
    • “Physical Properties and Thermo-mechanics of Plastic Materials”, 2 volumes, Technical Publishing House, Bucharest, 1979
  • 167 Papers (100 as unique author), published in Romanian, German, English and French journals
  • Editorial Position
    • Member of the editorial advisory board of “Revista de Chimie” (Revue of Chemistry, Bucharest), “Polymer Engineering Journal” (USA) and Materiale Plastice (Plastics, Bucharest)


  • Since 2000 - Member and secretary of the Chemical Engineering Sectionof the Academy of Technical Sciences of Romania
  • Member of the International Congress Committee concerning education in the field of polymer processing, London, 1979, Zagreb, 1980
  • member of the technical program of  The Polymer Processing Society, European Meeting, Göteborg, Sweden, August 19-21, 1997 etc
  • member of Control Board of Commercial Societies ROMPLAST S.A., UPRUC S.A., GUMOPHLEX S.A., VERACHIM S.A.

Prizes and Awards

  • 1974 - "Aurel Vlaicu" Prize granted by the The Romanian Academy for the research in the field of polymer extrusion process
  • “Revista de Chimie” Prize (1999) for the paper “The Principle of Irreversibility”
  • “Opera Omnia” prize (2001) awarded by The National Council for Scientific Research in Higher Education (CNCSIS)

Foreign languages

  • English, French, Russian (well), German (fair)


  • Private: 119, Nicolae Titulescu Blvd, Bl.3, Sc.B, Apt. 42, 78151 Bucharest, Romania
  • Office: Process Equipment Department, Polytechnica University, 77206 Bucharest, Romania, Phone: +40-1-410.0400 ext.193, Phone/fax: +40-1-410.0285, E-mail!

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