Martinus Willem Beijerinck (1851-1931)

Total Page:16

File Type:pdf, Size:1020Kb

Martinus Willem Beijerinck (1851-1931) Features Martinus Willem Beijerinck (1851-1931) Pioneer of general microbiology KING-THOM CHUNG and DEAM HUNTER FERRIS “Fortunate are those who now start.” that use methane as their sole source of carbon and Martinus W. Beijerinck energy. Albert Jan Kluyver, who inherited the chair of Beijerinck in 1921, developed the theory of metabolic Late in 1995, microbiologist, historians, and digni- unity and diversity for microorganisms. And C. B. Van taries participated in a conference, “Beijerinck Centen- Niel, one of Kluyver’s students, migrated to the United nial-Microbial Physiology and Gene Regulation: States, where he influenced an entire generation of Emerging Principles and Application,” in The Hague, microbiologists with his enthusiasm for unusual bio- The Netherlands, to commemorate the appointment of chemistry and physiology. Together with Pasteur, Martinus Willem Beijerinck, the great microbiologist, Koch, and the Russian Sergi N. Winogradsky, who as a professor at Delft Polytechnic School. Despite his specialized in soil microorganisms, Beijerinck is re- discovering the filterability of the infectious agent garded as a founder of microbiology as a distinct responsible for tobacco mosaic disease, identifying the discipline. first microbial sulfate reducer, and conducting pioneer- ing research on nitrogen fixation, very few current Beijerinck’s Humble Family Origins students of biology are aware of Beijerinck’s fundamen- tal contributions to the development of microbiology. The family of Martinus Willem Beijerinck, who was One reason that Beijerinck is not better known is born on 16 March 1851 in Amsterdam, The Nether- that his studies of plant- and soil-associated microor- lands, came from ganisms were less dramatic than those of his contem- Twente in the prov- poraries Louis Pasteur and Robert Koch. Moreover, ince of Overijsel. His their work related to familiar human and animal father, Derk Beijer- diseases. inck (1805~1879), Beije.rinck, with his keen ability for observation, and mother, Jean- was a prime mover in establishing general microbiol- nette Henriette van ogy as a major discipline. Well before most universities Slogteren (1811- recognized microbiology as a distinct discipline, he 1875), had one other established the Delft School of Microbiology, which set son and two daugh- the cornerstone for developing many such departments ters. and institutions worldwide. Soon this school attracted When Derk Bei- a steady stream of insightful researchers, including the jerinck’s tobacco _ botanist and microscopist Gijsebertus Van Iterson and business in Amster- N. L. Sohngen, the first to describe microorganisms dam failed, he and his family moved to King-Thorn Chung (corresponding author) is a pro- Naarden in 1851, fessor of microbiology at the Department of Microbiol- where he found work ogy and Molecular Cell Sciences, The University of as a clerk in the Beijerinck (from ASM Archives) Memphis, Memphis, Tenn. Deam Hunter Ferris, profes- Haarlem booking of- sor emeritus of the Department of Pathobiology, Uni- fice of the Holland versity of Illinois, Urbana, passed away on 8 December Railway Company. Although the family was too poor to 1993 during the preparation of this article. send Martinus to school, his father taught him not only VOL. 62, NO. 10, 1996 539 all the subjects of elementary Scientific Highlights of Beijerinck’s Career school but also French, English, l Demonstrated the filterability of the infectious agent of tobacco mosaic disease a little German, artwork, and and coined the term “filterable virus.” Described the intracellular reproduction some astronomy and physics. of tobacco mosaic virus in 1898, a pioneering contribution in virology. At the age of 12, Martinus l Isolated BaciZZus rudicicola and proved that it forms nodules on the roots of went on to the elementary Leguminosae species. Later isolated Rhizobium species, studied nitrogen fixa- school of Master Knoop and, tion, and demonstrated nitrogen fixation by free-living microorganisms, partic- subsequently, the Hoogere ularly Azotobacter chroococcum. Burgerschool (secondary school) * Isolated and described in detail the denitrification process of BaciZZus sphaero- at Haarlem. Despite an inferior- sporus and Bacillus nitrous. a Isolated sulfate producing ThiobaciZZus species and demonstrated their chemo- ity complex that undermined autotrophic nature. Also studied hydrogen sulfide production by Aerubacter his self-confidence, intelligence species. and hard work led him to the l Contributed to the understanding of lactic acid bacteria involved in producing top rank in his class. Moreover, kefir and yogurt. Demonstrated the significance of a catalase-negative reaction during this time, Frederik Wil- and proposed the generic name LactobaciZZus. lem van Eeden, his science l Introduced the generic name Acetobacter, described pigment-producing Aceto- teacher in botany, greatly influ- baeter melanogenum, and studied butyric acid and butyl alcohol fermentation. enced Beijerinck. The two of l Pioneered the study of luminescent bacteria and isolated Phutobacterium them spent considerable time Zuminosum (1889). Pioneered the study of yeast, isolated Schixosuccharumyces wandering the sand dunes near octoporus from raisins, and discovered the saccharolytic enzyme lactase of Saccharomyces tyrucola, Haarlem nurturing a love of * Was the first to obtain pure cultures of algae, zoochlorellae, and gunidia of plant life. In 1866, at the age of lichens. 15, he won a contest on the basis l Studied urea decomposition, microbial variations (mutations), and oxygen of his collection of 150 species of relationships among bacteria. plants. * Observed Sarcina uentriculi in media of high acidicity and under anaerobic With the help of his brother conditions. and uncle, Beijerinck entered a Studied plant galls and did extensive morphological work on adventitious the Delft Polytechnical School, structures and regeneration phenomena in plants. where chemistry became his l Studied phyllotaxis, the arrangement of leaves on plant stems, major subject but plants re- l Investigated the fungus CZasterusporium carpophilum (later named C. belijer- mained his major nick), the potent cause of gummosis. interest. While a student, he met J. H. Van’t Hoff, who later won the first Nobel Prize in chemistry. They undertook many experiments together, and Van’t The Delft School of Microbiology Hoff later became Beijerinck’s lifelong adviser. When- Family Tree Project - - ~ ever a new opportunity arose for Beijerinck, he con- On a freezing evening outside the former Microbi- sulted with Van’t Hoff before taking action. ology Laboratory in Delft late in 1995, the son of Albert Beijerinck graduated in 1872 and enrolled in the Jan Kluyver unveiled a plague commemurating the building, which is now an apartment complex. In that laboratory Beijerinck and Kluyver founded the D M. W. Beijerinck School of Microbiology a century ago. This year as we Delft University of Technology celebrate the Beijerinck centennial, we alsu recognize I the five generations of microbiologists who descended A.J. Kluyver Delft University B.J.D. Meeuse- University of Washington becoming a pkfessor, we D.R. Kreger 117 J.E. van Amstel tree” of microbiolotists who- can traj Agricultural University of Wageningen J.P. Pfeiffer A. van Rossem many others H.C. Jacobsen Unilever aspects is its international spread. E A.H.van Delden school are found on every major land block and in many countries, Ledey A. Robertsun LesZey A. Robertson of the KZuyuer Laboratorlv fur Agricultural University of Wageningen Biotechnology at DeZft University uf Technoloiy - in wj j1 ’ DeZft, Xhe Netherlands, began the FamiZy Tree Pro*ject. I I I ASM News Features ued research and in 1877 published his [See Mini-tree 3. ] first paper on plant galls. In the same year he received his doctorate from the Univer- sity of Leiden. His dissertation was dedi- cated to his father. He remained in Wage- C.B. van Niel y J. W.M. la Riviere; IHE Stanford University E.S. Idziak; McGill University ningen, teaching and studying plant galls. T. WikCn N. Kreger-van Rij; CBS In 1883, one of his papers was accepted by Delft University of Technology A.J. van der Eb; University of Leiden H. Veldkamp R.I. Mateles; Candida Corporation the Amsterdam Academy, a great honor for University of Groningen A. Fuchs; Agricultural University of J. Lodder Wageningen him. Gist brocades G.D. Vogels; Catholic University of According to L. E. den Dooren de Jong, J.P. van der Walt Nijmegen University of the Orange Free State C.J.E. Bulder; Agricultural University of one of his students during this period, D.M.J. Westendijk Wageningen CBS and many, many others Beijerinck was a demanding and unpopu- J.C. Hoogerheide lar teacher who shouted his demands and Gist brocades R.L.Starkey often berated students for their mistakes. Rutgers University C.E.Clifton Their attitudes disappointed Beijerinck, J.G. Kuenen; Delft University of Technology Stanford University W. Harder; University of Groningen who did not seem to understand the outlook C.J.E.A.Bulder W. Konings; University of Groningen Agricultural University of Wageningen on life of these “normal” students. J.C. Gottschal; University of Groningen A. Kaars Sijpesteijn and many others To Beijerinck, there was nothing more T.N.O. I- H.A. Barker interesting than science. Botanical re- University of California ’ +, B.E. Volcani The next Delft Generation search was the love of his life. His work Scripps Institute of Oceanography was increasingly recognized by the scien- S. Soriano University of Buenos Aires tific establishment in The Netherlands, J. De Ley University of Gent. which in May 1884 elected him to the H.J. Phaff Royal Academy of Sciences in Amsterdam. University of California, Davis N.J. Palleroni; Rutgers University W. Verhoeven R.E. Halbinger; University of Buenos Aires During this period he also came into regu- Nutricia and many others P.A.Roelofsen lar contact with many influential scholars, Delft University of Technology such as the botanist Hugo Marie De Vries N.M.Stelling-Decker CBS (1848 -1935), who rediscovered Mendel’s B. Elema rules of inheritance; the astronomer A. C. Gist brocades T.Y. Kingma-Boltjes H.J.J.
Recommended publications
  • Do the Patient Protection and Affordable Care Act's Provisions Rescue Commercial Genetic Research After Association for Molecular Pathology, Et Al., V
    Health Law and Policy Brief Volume 5 | Issue 2 Article 5 10-16-2013 Do the Patient Protection and Affordable Care Act's Provisions Rescue Commercial Genetic Research after Association for Molecular Pathology, et al., v. U.S. Patent and Trademark Office, et al. Thomas J. Kniffen American University Washington College of Law Follow this and additional works at: http://digitalcommons.wcl.american.edu/hlp Part of the Health Law Commons Recommended Citation Kniffen, Thomas J. "Do the Patient Protection and Affordable Care Act's Provisions Rescue Commercial Genetic Research after Association for Molecular Pathology, et al., v. U.S. Patent and Trademark Office, et al." Health Law & Policy Brief 5, no. 2 (2011): 32-38. This Article is brought to you for free and open access by Digital Commons @ American University Washington College of Law. It has been accepted for inclusion in Health Law and Policy Brief by an authorized administrator of Digital Commons @ American University Washington College of Law. For more information, please contact [email protected]. PPACA's provisions and its potential to rescue In 4ssociation for Molecular Pathology et al. commercial genetic research if the Federal v. US. Patent and lrademark Office, et al., the Circuit's decision in Association for Molecular U.S. District Court for the Southern District Pathology is reversed by the Supreme Court. of New York invalidated a claim to patent genetically developed material on the basis L, Patecints ad eneicResearch, that "[t]he patents issued by the [United States AU.S Constitution Patent Office] are directed to a law of nature and were therefore improperly granted."1 The Congress is authorized by the U.S.
    [Show full text]
  • Antony Van Leeuwenhoek, the Father of Microscope
    Turkish Journal of Biochemistry – Türk Biyokimya Dergisi 2016; 41(1): 58–62 Education Sector Letter to the Editor – 93585 Emine Elif Vatanoğlu-Lutz*, Ahmet Doğan Ataman Medicine in philately: Antony Van Leeuwenhoek, the father of microscope Pullardaki tıp: Antony Van Leeuwenhoek, mikroskobun kaşifi DOI 10.1515/tjb-2016-0010 only one lens to look at blood, insects and many other Received September 16, 2015; accepted December 1, 2015 objects. He was first to describe cells and bacteria, seen through his very small microscopes with, for his time, The origin of the word microscope comes from two Greek extremely good lenses (Figure 1) [3]. words, “uikpos,” small and “okottew,” view. It has been After van Leeuwenhoek’s contribution,there were big known for over 2000 years that glass bends light. In the steps in the world of microscopes. Several technical inno- 2nd century BC, Claudius Ptolemy described a stick appear- vations made microscopes better and easier to handle, ing to bend in a pool of water, and accurately recorded the which led to microscopy becoming more and more popular angles to within half a degree. He then very accurately among scientists. An important discovery was that lenses calculated the refraction constant of water. During the combining two types of glass could reduce the chromatic 1st century,around year 100, glass had been invented and effect, with its disturbing halos resulting from differences the Romans were looking through the glass and testing in refraction of light (Figure 2) [4]. it. They experimented with different shapes of clear glass In 1830, Joseph Jackson Lister reduced the problem and one of their samples was thick in the middle and thin with spherical aberration by showing that several weak on the edges [1].
    [Show full text]
  • And the Winner Should Be
    EDITORIAL And the winner should be… It is time that the tremendous contribution made by Carl Woese to microbiology, medicine and biology as a whole is rewarded by the Nobel committee. Among microbiologists, Carl Woese’s achievements are isolates can allow rapid disease diagnosis. As culturing is well known. His most lauded accomplishments include the not required, sequence analysis can be used to diagnose recognition of an entirely new domain of organisms, many different infectious diseases and is now common in the Archaea1, and the subsequent introduction of the clinical diagnostic laboratories. In the case of Whipple’s three-domain phylogeny2 that is now widely recognized as disease, it even led to the identification of a previously the most accurate reflection of the relatedness of all organ- unknown bacterium (Tropheryma whipplei) as the cause4. isms. We are so used to using neatly organized taxonomic Second, using 16S rRNA-based phylogeny, it is possible to trees to demonstrate the relationships between different study the human microbiota at a detailed level. In recent microorganisms that it is easy to forget that not so long ago years, we have begun to obtain a comprehensive picture the classification of bacteria was considered hopeless. In of the composition of the human-associated microbiota 1963 Roger Stanier, then one of the foremost researchers in various niches, including the gut, skin and oral cavity. in the field of bacterial classification, proclaimed that “The This has led to the insight that shifts in the gut-associated ultimate scientific goal of biological classification cannot microbiota are associated with diseases such as Crohn’s be achieved in the case of bacteria” (REF.
    [Show full text]
  • Role of the Microbiologist in Infection Control and Hospital Epidemiology J
    7/7/2014 Role of the Microbiologist in Infection Control and Hospital Epidemiology J. Kristie Johnson, Ph.D. Director, Microbiology Laboratory University of Maryland Medical Center Associate Professor, Department of Pathology University of Maryland School of Medicine Disclosures 1 7/7/2014 Objectives Understand the importance of the microbiology laboratory to infection control, the hospital epidemiologist, and the infectious disease physician. Understand the various techniques available to assist in an epidemiological investigation. Infectious Disease Diagnostics Diagnostic tests for infectious diseases have changed to: Detection of infectious agents/molecules/genes replacing growth and identification procedures. Turn around time minutes to hours replacing days to weeks Evolved through transitional research. Direct impact patient care Need hospital based Microbiology is now studies to validate their clinical effectiveness. part of the healthcare team 2 7/7/2014 Infection Prevention Programs Role in infections Monitor Understanding the epidemiology of HAIs Determine rates of infections Surveillance Prevent Intervene to prevent infections Education Control Outbreak investigation The clinical microbiology laboratory is essential to a comprehensive infection prevention program Role of the Microbiology Laboratory in Infection Control Specimen Collection Accurate Identification and Susceptibility Testing Laboratory Information Systems Rapid Diagnostic Testing Reporting of Laboratory Data Outbreak Recognition and Investigations-Molecular
    [Show full text]
  • CALIFORNIA DEPARTMENT of PUBLIC HEALTH PUBLIC HEALTH MICROBIOLOGIST I Schematic Code: SW50 Classification Code: 7954 Exam Code: 8H1AF
    CALIFORNIA DEPARTMENT OF PUBLIC HEALTH PUBLIC HEALTH MICROBIOLOGIST I Schematic Code: SW50 Classification Code: 7954 Exam Code: 8H1AF Examination Type: Open Continuous FINAL FILING DATES Testing is considered continuous as dates can be set at any time. Applications will be reviewed to ensure the minimum requirements for participation in this exam are met. Possession of the entrance requirements does not assure a place on the eligible list. Once you have taken the examination, you may not retest for 12 months from the established list date. Applications must be submitted by the filing dates indicated below. Applications postmarked, personally delivered, or received via interoffice mail after the final filing date, will be held for the next administration of the exam. The filing dates are: January 11, 2021 March 12, 2021 May 11, 2021 July 9, 2021 September 10, 2021 November 12, 2021 SALARY $5,598 - $6,536 per month $5,560 - $7,456 per month EQUAL EMPLOYMENT OPPORTUNITY The State of California is an equal opportunity employer to all, regardless of age, ancestry, color, disability (mental and physical), exercising the right to family care and medical leave, gender, gender expression, gender identity, genetic information, marital status, medical condition, military or veteran status, national origin, political affiliation, race, religious creed, sex (includes pregnancy, childbirth, breastfeeding and related medical conditions), and sexual orientation. WHO CAN APPLY Persons who meet the minimum qualifications as stated on this announcement may take this competitive examination. MINIMUM QUALIFICATIONS Possession of a valid Public Health Microbiologist's certificate issued by the California State Department of Public Health (Formerly the Department of Health Services.) (Possession of a Baccalaureate Degree with a major in Medical or Public Health Microbiology or equivalent subjects and six months' training in a public health laboratory or the equivalent are required for certification.
    [Show full text]
  • Scientists Dissent List
    A SCIENTIFIC DISSENT FROM DARWINISM “We are skeptical of claims for the ability of random mutation and natural selection to account for the complexity of life. Careful examination of the evidence for Darwinian theory should be encouraged.” This was last publicly updated April 2020. Scientists listed by doctoral degree or current position. Philip Skell* Emeritus, Evan Pugh Prof. of Chemistry, Pennsylvania State University Member of the National Academy of Sciences Lyle H. Jensen* Professor Emeritus, Dept. of Biological Structure & Dept. of Biochemistry University of Washington, Fellow AAAS Maciej Giertych Full Professor, Institute of Dendrology Polish Academy of Sciences Lev Beloussov Prof. of Embryology, Honorary Prof., Moscow State University Member, Russian Academy of Natural Sciences Eugene Buff Ph.D. Genetics Institute of Developmental Biology, Russian Academy of Sciences Emil Palecek Prof. of Molecular Biology, Masaryk University; Leading Scientist Inst. of Biophysics, Academy of Sci., Czech Republic K. Mosto Onuoha Shell Professor of Geology & Deputy Vice-Chancellor, Univ. of Nigeria Fellow, Nigerian Academy of Science Ferenc Jeszenszky Former Head of the Center of Research Groups Hungarian Academy of Sciences M.M. Ninan Former President Hindustan Academy of Science, Bangalore University (India) Denis Fesenko Junior Research Fellow, Engelhardt Institute of Molecular Biology Russian Academy of Sciences (Russia) Sergey I. Vdovenko Senior Research Assistant, Department of Fine Organic Synthesis Institute of Bioorganic Chemistry and Petrochemistry Ukrainian National Academy of Sciences (Ukraine) Henry Schaefer Director, Center for Computational Quantum Chemistry University of Georgia Paul Ashby Ph.D. Chemistry Harvard University Israel Hanukoglu Professor of Biochemistry and Molecular Biology Chairman The College of Judea and Samaria (Israel) Alan Linton Emeritus Professor of Bacteriology University of Bristol (UK) Dean Kenyon Emeritus Professor of Biology San Francisco State University David W.
    [Show full text]
  • History of the Department of Microbiology 1868 – 2009
    June 2015 HISTORY OF THE DEPARTMENT OF MICROBIOLOGY 1868 – 2009 University of Illinois at Urbana-Champaign 1 A HISTORY OF THE DEPARTMENT OF MICROBIOLOGY 1868 – 2009 This 141 year history of the Department of Microbiology includes an article (Chapter 1), written and published in 1959 by the Department, which covers the period 1868 to 1959. I joined the Department in 1953, and my recounting of the Department’s history includes personal observations as well as anecdotes told to me by H. O. Halvorson and others. Later I realized what a unique experience it had been to join a first-class department, and I resolved to play a role in maintaining its research stature. Ralph Wolfe 2 Department of Microbiology History of the Headship: 1950 – 1959 Halvor Halvorson 1960 – 1963 Kim Atwood 1963 – 1972 Leon Campbell 1972 – 1982 Ralph DeMoss 1982 – 1987 Samuel Kaplan 1987 – 1990 Jordan Konisky 1990 – 1991 Ralph Wolfe (Acting Head) 1991 – 1997 Charles Miller 1997 – 2002 John Cronan 2003 – 2004 Jeffrey Gardner (Acting Head) 2005 – Present John Cronan 3 Organization of the History of the Department In Chapters 2 to 6 the data are divided into Academic Decades, each containing the following sections: Section I, an overview of the decade; Section II, some events for each year of the decade; Section III, a summary of the research interests, honors received, publications, and invited off-campus lectures or seminars for each faculty member. These data have been obtained from the annual reports of the faculty submitted to the departmental secretary. 4 CHAPTER 1 1868 – 1959 During this time period the name of the Department was Department of Bacteriology (Anecdotes by Ralph Wolfe) A SHORT HISTORY OF THE DEPARTMENT OF BACTERIOLOGY H.
    [Show full text]
  • Microbiologist 1 3779 Microbiologist 2 3780 Microbiologist 3 3781
    Microbiologist 1 3779 Microbiologist 2 3780 Microbiologist 3 3781 CLASS SERIES CONCEPT AND RESPONSIBILITIES The MICROBIOLOGIST performs a variety of standard, complex testing and analysis in the scientific fields of virology, immunology, serology, bacteriology, parasitology, mycology, biochemistry or genetics for the detection and cause of disease. Work also involves the design, development or application of testing methods and procedures. In order to perform a variety of complex testing, employees in this class assess the adequacy of specimens or samples for necessary tests and may log them, capturing necessary demographics and information prior to preparing them for testing. Microbiologists perform testing by following established procedures using quality control samples to determine if the results are accurate and of high quality. They maintain accurate and up-to-date records. Perform troubleshooting of assays as well as any calculations and data analysis necessary, correlate results with other tests, and record results. Based upon the results, they may request additional specimens or samples. Routinely complete and generate reports related to testing and communicate test results to clients or other staff. Prepare specimens and accompanying reports to be forwarded to other departments or agencies. Prepare and maintain necessary equipment, performing quality control checks and calibration as applicable. Evaluate new instruments, perform validation or verification and implement new test procedures. Some employees in this class may train or oversee lower level laboratory personnel in a specialized area of expertise and provide consultation to them. Employees in this class are primarily found outside of hospitals and medical facilities. They require the willingness to work in the environment associated with the position's location and purpose.
    [Show full text]
  • Beijerinck, Martinus Willem
    414 BIOGRAPHIES MARTINUS WILLEM BEIJERINCK 1851-1931 Beijerinck was bom in 1851 in Amsterdam, the son of a railway employee. He received his secondary education at the HBS in Haar­ lem and from 1868 to 1872 studied chemical technology at die Delft Polytechnic School. Together with his fellow students J.H. van 't Hoff and A.A.W. Hubrecht, Beijerinck was exempted, in 1872, from an additional examination in Greek and Latin required for university study. Wliile he was teacher in various schools Beijerinck studied botany at Leiden from 1872 onwards. In 1877 he received his doctor­ ate, cum laude, on a dissertation entitled Bijdrage tot de morpholoffe der plankgallen (Contribution to the Morphology of Plant Galls). In 1884 Beijerinck became a member of the Royal Academy of Arts and Sciences in Amsterdam, and a year later he was hired as a microbiologist by the Nederlandsche Gist- en Spiritusfabriek (Dutch Yeast and Methylated Spirits Factoiy) in Delft. In this capacity he got his own microbiological laboratoiy, where he carried out many origi­ nal studies, especially on the metabolism of various species of bacteria and lichens. He discovered the small nitrogen-fixing tubers at the roots of leguminous plants and a group of anaerobic bacteria that were important for the production of acetone and butyl alcohol. In 1895 the Delft Polytechnic School appointed Beijerinck as pro­ fessor of biology and bacteriology. Two years later a new micro­ biological laboratory, built especially for him and his students, was opened. Here Beijerinck continued his microbiological studies with great success. In 1896 he discovered the bacterium that was reponsible for the bad smell of polluted canal water in Dutch cities; he and his students did important work on the microbes that were active in acetic-acid and alcohol fermentations; and in 1898 Beije­ rinck was the first to postulate the existence of a filterable living principle, a 'contagium vivum fluidum', responsible for the mosaic disease in tobacco plants.
    [Show full text]
  • Microbiologist
    MICHIGAN CIVIL SERVICE COMMISSION JOB SPECIFICATION MICROBIOLOGIST JOB DESCRIPTION Employees in this job complete or oversee a variety of professional microbiological tests, analyses and production activities to diagnose human disease, determine food purity, or produce and test biological products. There are four classifications in this job. Position Code Title - Microbiologist-E Microbiologist 9 This is the entry level. As a trainee, the employee carries out a range of professional microbiologist assignments while learning the methods of the work. Microbiologist 10 This is the intermediate level. The employee performs an expanding range of professional microbiologist assignments in a developing capacity. Microbiologist P11 This is the experienced level. The employee performs a full range of professional microbiologist assignments in a full-functioning capacity. Considerable independent judgement is used to make decisions in carrying out assignments that have significant impact on services or programs. Guidelines may be available, but require adaptation or interpretation to determine appropriate courses of action. Position Code Title - Microbiologist-A Microbiologist 12 This is the advanced level. The employee may function as a lead worker or senior worker. At this level, employees are responsible for overseeing the work assignments of other professionals or have regular assignments which have been recognized by Civil Service as having significantly greater complexity than those assigned at the experienced level. NOTE: Employees generally progress through this series to the experienced level based on satisfactory performance and possession of the required experience. JOB DUTIES NOTE: The job duties listed are typical examples of the work performed by positions in this job classification. Not all duties assigned to every position are included, nor is it expected that all positions will be assigned every duty.
    [Show full text]
  • Veterinary Parasitology
    Andrei Daniel MIHALCA Textbook of Veterinary Parasitology Introduction to parasitology. Protozoology. AcademicPres Andrei D. MIHALCA TEXTBOOK OF VETERINARY PARASITOLOGY Introduction to parasitology Protozoology AcademicPres Cluj-Napoca, 2013 © Copyright 2013 Toate drepturile rezervate. Nici o parte din această lucrare nu poate fi reprodusă sub nici o formă, prin nici un mijloc mecanic sau electronic, sau stocată într-o bază de date, fără acordul prealabil, în scris, al editurii. Descrierea CIP a Bibliotecii Naţionale a României Mihalca Andrei Daniel Textbook of Veterinary Parasitology: Introduction to parasitology; Protozoology / Andrei Daniel Mihalca. Cluj-Napoca: AcademicPres, 2013 Bibliogr. Index ISBN 978-973-744-312-0 339.138 Director editură – Prof. dr. Carmen SOCACIU Referenţi ştiinţifici: Prof. Dr. Vasile COZMA Conf. Dr. Călin GHERMAN Editura AcademicPres Universitatea de Ştiinţe Agricole şi Medicină Veterinară Cluj-Napoca Calea Mănăştur, nr. 3-5, 400372 Cluj-Napoca Tel. 0264-596384 Fax. 0264-593792 E-mail: [email protected] Table of contents 1 INTRODUCTION TO PARASITOLOGY ..................................................................................... 1 1.1 DEFINING PARASITOLOGY. DIVERSITY OF PARASITISM IN NATURE. ................................................. 1 1.2 PARASITISM AS AN INTERSPECIFIC INTERACTION ............................................................................... 2 1.3 AN ECOLOGICAL APPROACH TO PARASITOLOGY ................................................................................... 5 1.4
    [Show full text]
  • Phd Microbiologist Consultant for Public Health Laboratory Purpose
    PhD Microbiologist Consultant for Public Health Laboratory Purpose: To identify, control and prevent disease through the expert operation and administration of the Public Health Laboratory including the training of laboratory personnel, the performance of laboratory activities, and the implementation of policy and procedures. Position: • This is a part-time position. The percentage of work less than full-time is negotiable with the selected candidate. • There is flexibility in the number of hours of on-site administration and of off-site consultation. Primary Activities: • Develops and implements policy and procedures relating to the control and prevention of disease and other health threats. • Directs laboratory examinations to assist in the identification, control, and prevention of diseases. • Provides technical supervision and training in public health laboratory testing procedures. • Provides consultation to the PH Laboratory Supervisor and microbiologists in technical and clinical aspects of their work, including consultation on any atypical test results or unclear test results. • Ensures the quality of all PH Laboratory test systems including test procedures, recording results, reporting test results and written procedures. • Reviews Quality Assurance program and the proficiency testing system including incident reports, testing samples and corrective actions. • Assess operational systems including staff competencies, , laboratory equipment, testing methodologies and (SOP)protocols in the PH Laboratory and makes systemic improvements to maintain highly efficient and effective operations. • Maintains current knowledge of new laboratory methods and consults with others concerning such methods, consults with Health Officers, PHL supervisor to continue to improve testing available within SB PHL. • Ensures compliance with applicable local, state, and federal regulations relating to laboratory procedures and reporting and maintenance of records.
    [Show full text]