POSITIONS OPEN

ASSISTANT PROFESSOR: Ph.D. biochemistry. An-ticipated opening. Postdoctoral experience in pro-tein chemistry or enzymology or immunology.Teaching load of ' to ½ natural science program fornonscience majors; remainder biochemistry, generalchemistry. Direct research for B.S., M.S. students.Resumes, including summary of research ideas,three letters of recommendation, should be sent toClyde Riley, Chemistry Department, The Universityof Alabama In Huntsville, Huntsville, Alabama 35807.Application deadline: 25 May 1976. An Equal Oppor-tunitylAffirmative Action Institution.

ASSOCIATE PROFESSORA tenured position is vacant in the Chemistry De-partment, Aarhus University, Denmark, on I No-vember 1976. The salary range is D.Kr. 127,000 toD.Kr. 160,000 per annum before taxes.The position is to be filled with a scientist who hasresearch experience and who can direct teaching andresearch in analytical chemistry. Preference will begiven to applicants with experience in fields alreadyestablished in the Department (spectroscopy, elec-trochemistry, chemical and biochemical separationtechniques, automatization). Participation in analyti-cal aspects of environmental problems is desirable.The successful applicant is expected to undertake anequal share with other members of the Departmentin teaching duties extending from elementary to grad-uate training, and eventually to teach in Danish. Thereport of the evaluation committee will be sent to allapplicants. Applicants are requested to send threecopies of curriculum vitae, including publications,and a brief description of research activities to theFaculty of Science, Aarhus University, 1 Ndr. Ring-gade, DK48000 Aarhus C, Denmark. Deadline: IJune 1976.

ASSISTANT PROFESSOR, Ph.D., anatomist with 3to 4 years of postdoctoral experience, to teach grossanatomy. Research expertise in electron microscopyevidenced by publications. Salary dependent uponqualifications. Applicants must include application,curriculum vitae, transcripts, and three letters of rec-ommendation. Deadline is 21 May 1976. Send to Dr.D. A. Ollerich, Anatomy Department, University ofNorth Dakota, Grand Forks, North Dakota 58201.The University of North Dakota is an Equal Oppor-tunitylAffirmative Action Employer.

GEOPHYSICAL INSTITUTEUNIVERSITY OF ALASKA, FAIRBANKS

Applications are invited for the position of assistantprofessor of applied science in the field of satellite re-mote sensing, with emphasis on resource evaluationand land-use classification. Preference will be givento candidates who have experience in using satellitedata for vegetation and forest mapping.Candidates should have a doctoral degree in an ap-propriate branch of biology or geography, or theequivalent in training and experience. Applicationswill be judged primarily on documented evidence ofthe research, but attention will also be paid to experi-ence in teaching.Familiarity with arctic or alpine environments is de-sirable. A state-of-the-art knowledge of remote-sensing technology and a breadth of background inproblem-solving are essential. Experience in the dis-semination of scientific results to potential users, fea-sibility studies, demonstration projects, and liaisonwith federal, state, and local governments would beadvantageous.The appointee will be based at Fairbanks but may berequired to spend considerable time at other Alaskanlocalities. A joint appointment with other institutesof the University may be arranged.The University is an Equal OpportunitylAffirmativeAction Employer; women and members of minoritygroups are encouraged to apply.For further information, write to the Director,Geophysical Institute, University of Alaska, Fair-banks, Alaska 99701.

Innovative liberal arts teaching college seeks BOT-ANIST; teaching specialty in plant physiology pre-ferred. Research interests in agriculture or limnol-ogy desirable. Starting July 1977 or before. Rankopen; salary negotiable. Minority and women can-didates are urged to apply. Please send letter statingideas about teaching, curriculum vitae, and three let-ters of reference to: Botanist Search, c/o Judith Wil-son, School of Natural Science, Hampshire Colege,Amherst, Mass. 01002.

578

ASSISTANT PROFESSOR OF BIOLOGY. Ph.D.and teaching experience required. Effective I Sep-tember 1976. One-year appointment with possibilityof continuation. Generalist to teach undergraduatemicrobiology, introductory biology, and one or twocourses within area of competence; coordinatecourse in health care delivery systems; advise under-graduate research. Experience and expertise in al-lied health areas highly desirable. Salary range:$11,250 to $13,500. Send curriculum vitae, tran-scripts, three letters of recommendation to: Dr. Ken-neth R. Gordon, Chairman, Department of Biology,Thiel College, Greenville, Pa. 16125. An Equal Op-portunitylAffirmative Action Employer.

ASSISTANT PROFESSOR-CHEMICAL OCEAN-OGRAPHER. Recent Ph.D.'s are invited to applyfor a temporary (2-year maximum) position to re-place a faculty member going on leave 1 July. Shouldthe latter not return, his replacement would be in afavorable position for consideration for a more per-manent status. Send r6sume, transcripts, and threeletters of reference prior to I June to: Edward J.Green, Department of Oceanography, University ofMaine, Walpole, Maine 04573. Inquiries: telephone207-563-3146.An Equal OpportunitylAffirmative Action Employer

The Division of Earth and Physical Sciences, TheUniversity of Texas at San Antonio, invites applica-tions for a faculty appointment at the assistant profes-sor level in the area of ENGINEERING PHYSICSOR APPLIED PHYSICS. Candidates with a Ph.D.and expertise in any area of experimental physics re-lated to engineering physics will be considered. Ap-plicants should send curriculum vitae and three let-ters of support to Dr. B. S. Thyagarajan, Director,Division of Earth and Physical Sciences, The Universi-ty of Texas at San Antonio, San Antonio, Texas 78285.The University of Texas at San Antonio is an EqualOpportunity/Afirmative Action Employer.

DEPARTMENT OF ENTOMOLOGYUNIVERSITY OF WISCONSIN, MADISONA full-time position at the ASSISTANT PROFES-

SOR level will be available by November-Decemberof 1976. Duties will include teaching introductory en-tomology and developing a research program. An en-tomologist with one of the following specialtieswould be of particular interest: (i) insect pathology,(ii) genetics/developmental biology, (iii) insect be-havior.

Applicants must have a genuine interest in teach-ing and proven ability to carry out research in theirfield. Interested persons holding a recent Ph.D. de-gree should send, by I July 1976, a curriculum vitae,transcripts of undergraduate and graduate work, re-search papers, and a brief statement of research andteaching interests, and have four letters of recom-mendation sent to Dr. G. M. Boush, Department ofEntomology, University of Wisconsin, Madison, Wis-consin 53706. An Equal Opportunity/Affirmative Ac-tion Employer.

AgSISTANT/ASSOCIATE PROFESSORPHYSIOLOGY AND BIOPHYSICS

The Department of Physiology and Biophysics,University of Iowa College of Medicine, invites ap-plications from well-qualified individuals for severalopenings at the assistant and associate professor lev-el. Applicants must hold the M.D. and/or Ph.D. de-gree and have a minimum of 2 years of postdoctoraltraining in cellular physiology or biophysics withpublications demonstrating productivity in originalresearch. Candidates should be prepared to developstrong independent researrh programs and to partici-pate in the medical and graduate teaching and doctor-al training activities of the department. While a pref-erence exists for individuals with well-defined inter-ests and research accomplishments in membranephysiology and biophysics, cellular cardiovascularphysiology, or cellular and molecular endocrinolo-gy, full consideration will be given to others showingpromise of outstanding contribution to the researchand teaching missions of this department. Pleasesend curriculum vitae, including bibliography and abrief description of research interests, teaching expe-rience, and careei objectives, with names of at leastthree references, to:

Dr. Robert E. FelowsDepartment of Physiology and BiophysicsUniversity ofIowa College of Medicine

Iowa City, Iowa 52242The University ofIowa is an Equal Opportunity Em-

ployer.

The Department of Neurology, UCLA School ofMedicine, San Fernando Valley Medical Program, isseeking applicants for the following full-time aca-demic positions: assistant professor level for NEU-ROLOGIST with research interest in neurochem-istry. POSTDOCTORAL FELLOWS in neurochem-istry (Ph.D.) (protein synthesis and development,one; cyclic nucleotides, one). Applicants are re-quested to submit a curriculum vitae and reprints toClaude G. Wasterlain, M.D., Head, Division of Neu-rology, Veterans Administration Hospital, Sepulveda,Calif. 91343. UCLA is an Equal OpportunitylAffirm-ative Action Employer and is desirous of receivingapplications from minority and women candidatesas well as other qualifiedpersons.

The University of Texas Health Science Center atSan Antonio, Department of Obstetrics and Gynecol-ogy, invites applications for an ASSISTANT PRO-FESSOR. Applicants must have a Ph.D. in reproduc-tive physiology, proven research ability, and teach-ing experience. The individual should have aknowledge of radioimmunoassays for steroid andprotein hormones and prostaglandins and interest indeveloping a research program in fetal physiologycorrelated with fetal and maternal endocrinology,with particular reference to late pregnancy and initia-tion of parturition. Interested persons should send aletter of application, curriculum vitae, and names ofthree references by 31 May 1976 to: Michael J. K.Harper, Ph.D., Department of Obstetrics and Gyne-cology, The University of Texas Health Science Centerat San Antonio, 7703 Floyd Curl Drive, San Antonio,Texas 78284. An Equal Opportunity/Affirmative Ac-tion Employer.

DEPARTMENT OF PSYCHOBIOLOGYUNIVERSITY OF CALIFORNIA, IRVINE

A position is available for an outstanding candidateat the assistant professor level. Candidates should ei-ther be pursuing research in neurobiology or behav-ioral biology emphasizing neural or endocrine mech-anisms. Postdoctoral research experience is pre-ferred. Preference will be given to applicants whoseresearch interests complement those of current facul-ty and whose research concerns some aspect of neu-ral or behavioral plasticity. The position is availablebeginning fall 1976, but may be held open for fall1977 if circumstances so warrant. Applicants shouldwrite to Norman M. Weinberger, Chairman, Depart-ment of Psychobiology, University of California, Ir-vine, California 92717, providing curriculum vitae,references, and publications. Applications from allqualified candidates are welcome; minorities andwomen are encouraged to apply.

ASSISTANT RESEARCH NEUROPSYCHOLOG-IST wanted in a multidisciplinary clinical researchprogram in epilepsy. Candidate must have Ph.D. inclinical and physiological psychology, an APA-ap-proved clinical internship, and four or more years ofpostdoctoral experience. Previous experience is re-quired in neuropsychological tests for epilepticpatients, neurodiagnostic tests (WADA test) forspeech and memory, electrophysiological tech-niques, and tests of autonomic and visceral func-tions. Research productivity must be demonstratedby prior innovative research contributions in signifi-cant numbers as first author in refereed journals.This position is offered in competition with an in-residence neuropsychologist. Must begin 1 July.Send resume to Myrna Beltman, University of Cali-fornia, Brain Research Institute, Los Angeles, Califor-nia 90024. We are an Affirmative ActionlEqual Op-portunity Employer. Women and minorities areurged to apply.

WOODS HOLE OCEANOGRAPHICINSTITUTION

ASSISTANT SCIENTISTWill perform research in underwater acoustics.

The research will involve fundamental investigationsin sound propagation in the ocean and sea floor. Sig-nificant emphasis and interest in applications of un-derwater acoustics to oceanic studies is expected.The desired education is a Ph.D. in physics or engi-neering. Desired experience is an experimental andtheoretical background in wave propagation, signaland data processing, and statistical communications.Should have performed significant research in atleast one of these areas. Specific experience inacoustics is not a prerequisite. Two to 3 months ofsea time per year is usual. If interested, contact thePersonnel Office, Woods Hole Oceanographic Institu-don, Woods Hole, Massachusetts 02543.

Equal Opportunity Employer, MIF

SCIENCE, VOL. 192

I

POSITIONS OPEN POSITIONS OPEN

POSITIONS OPEN

UNIVERSITY OF MICHIGANINSTRUCTOR

ASSISTANT PROFESSORASSOCIATE PROFESSOR

OR PROFESSORTwo (2) positions available in the Department of Ra-diology. Candidate must be Board-eligible or Board-certified. Entering level commensurate with qualifi-cations and experience. The physician will take partin programs of patient care, teaching, and researchcarried on in the Department. He or she will super-vise the activities of the resident staff and aid inteaching of residents and medical students. Codes#900H0 and # 1200F0. Send resume to Box 225, SCI-ENCE. A Nondiscriminatory, Affirmative ActionEmployer.

UNIVERSITY OF MICHIGANASSOCIATE PROFESSOR OR

PROFESSOR AND DIRECTOR OFWAYNE COUNTY RADIOLOGY DEPARTMENTCandidate must be Board-certified. Entering levelcommensurate with qualifications and experience.The physician will take part in the programs ofpatient care, teaching, and research carried on in theDepartment of Radiology. He or she will supervisethe activities of the resident staff and aid in teachingof residents and medical students. In addition, he orshe will carry the administrative responsibility forthe entire department with supervision of the profes-sional and nonprofessional personnel, the acquisi-tion and operation of radiologic equipment, and plan-ning for expansion of the department. Code#200D0. Send resume to Box 229, SCIENCE. ANondiscriminatory, Affirmative Action Employer.

BIOLOGY. Need Instructor qualified to teach in-troductory microbiology, botany, and biology begin-ning late August 1976. Tenure-track position with ac-ademic year salary in the $10,000 to $11,000 range.Applicants should hold or be a candidate for thePh.D. University of Wisconsin Center-Fox Valley isone of 14 2-year liberal arts and preprofessional cam-puses in the University of Wisconsin Center Systemlocated in the Fox Cities (Appleton, Neenah-Men-asha). Equal OpportunitylAffirmative Action Em-ployer. Send cumculum vitae and references to: Ap-pointments Committee, University of Wisconsin Cen-ter-Fox Valley, Midway Road, Menasha, Wisconsin54952.

BIOLOGYPosition available beginning in the fall 1976 semes-

ter for qualified Ph.D. to teach introductory cell biol-ogy courses and to assist supervise multisectionedbiology laboratories for science majors. Duties willinclude developing laboratory exercises and materi-als, supervising teaching assistants, and coordinat-ing laboratories with lectures. Preference will be giv-en to candidates with credentials in human anatomyor physiology. Please respond by 20 May to:

DeanScience and Engineering Division

Gannon CollegeErie, Pennsylvania 16501

Gannon College is an Affirmative ActionlEqualOpportunity Employer.

UNIVERSITY OF ATHENS, GREECEDEPARTMENT OF BIOLOGY

Jobs are immediately available for recent Ph.D.'s,preferably with postdoctoral experience, at the levelof voithos or epimelitis. Greek citizenship required.Special preference will be given to applicants in ge-netics and in cell biology. Please send curriculumvitae and two letters of recommendation, plus any in-quiries, to Dr. F. C. Kafatos, Department of Biology,Panepistimiopolis, Kouponia, Athens.

CELLULAR IMMUNOLOGIST,CLINICAL MICROBIOLOGIST

The Department of Microbiology has two openingsfor assistant professors, one with strong backgroundin cellular immunology and/or tumor immunologyand the other with specialized training in medical mi-crobiology. Please send a curriculum vitae and threeletters of reference to John M. McKenna, Chairman,Department of Microbiology, Texas Tech UniversitySchool of Medicine, Lubbock, Texas 79409. TexasTech University School of Medicine is an Affirma-tive Action/Equal Opportunity Employer.

7 MAY 1976

POSITIONS OPEN

ASSOCIATE DIRECTOR FORMARINE SCIENCES

The Institute for Marine and Coastal Studies(IMCS) of the University of Southern California in-vites applications for this position which will befilled in September 1976. In order to balance marinescience disciplines at USC, priority considerationmust be given to applicants with Ph.D. in physicaloceanography and extensive experience in air-sea in-teraction. Faculty rank will be full professor; there-fore, candidates are expected to have the requisiteacademic background for this level. Demonstratedscholarly contribution, performance as a teacher,and extensive experience in the management and di-rection of large-scale oceanographic programs are allimportant considerations for selection. In addition,candidates should have had recent experience in uni-versity administration. The incumbent for this posi-tion will be expected to develop, coordinate, andmanage IMCS marine science activities, as well asbe involved in regular teaching and research work.Please send curriculum vitae and supporting materi-als to: Dr. Don Walsh, Director, Institute for Marineand Coastal Studies, University of Southern Califor-nia, University Park, Los Angeles, California 90007.Applications for this position will close on 30 May1976. USC is an Equal OpportunitylAffirmative Ac-tion Employer.

CHAIRPERSON, Department of Forensic Sciences.The Department of Forensic Sciences of The GeorgeWashington University invites applicants for the po-sition of chairperson, effective 1 July 1976. The suc-cessful applicant will possess an earned doctorate inone of the natural or physical sciences and have sig-nificant teaching and professional experience, includ-ing demonstrated research and administrative capa-bilities. Rank will be based on experience; salary iscompetitive. Applicants should forward curriculumvitae and arrange for three letters of recommenda-tion to be submitted. All credentials must be re-ceived by 15 May 1976. Write to: Dr. ThomasF.Courtless, Search Committee Chairman, Departmentof Sociology, The George Washington University,Washington, D.C. 20052. The George WashingtonUniversity is an Equal Opportunity Employer.

CHEMISTRY: We invite applications for appoint-ment to our chemistry faculty in September 1976 atthe level of assistant professor. We seek candidateswith research interests in physical-organic chemistry,especially those with interests in macromoleculesand/or experimental x-ray crystallography. Addressinquiries to Michael Marron, University of Wiscon-sin-Parkside, Kenosha, Wisconsin 53140. Telephone:414-553-2430. Candidates should forward a resumeand have three recommendations sent to the sameaddress. Closing date for applications is 15 May.University of Wisconsin-Parkside is an Equal Op-portunity Employer.

CHIEF, ENDOCRINOLOGY SECTION-LouisianaState University Medical School in New Orleans,Department of Medicine, is recruiting for an M.D. tohead the Section of Endocrinology. Demonstratedresearch interest and teaching experience reqluired.Send curriculum vitae and references to A. Lopez-S.,M.D., Department of Medicine, Louisiana State Uni-versity Medical School, 1542 Tulane Avenue, New Or-leans, Louisiana 70112. Louisiana State University isan Equal OpportunitylAffirmative Action Employer.

CORONARY PHYSIOLOGYRESEARCH ASSOCIATE

Persons who hold a doctoral degree and are inter-ested in studying the coronary circulation pleasesend a resume to:

Dr. Eric FeigiDepartment of Physiology and Biophysics SJ-40

University of Washington Medical SchoolSeattle, Wash. 98195

An Affirmative Action Employer

DIRECTOR, ANIMAL CARERESEARCH FACILITY

Faculty position for Board-certified D.V.M. in labo-ratory of Animal Care Research Facility, Universityof Nebraska College of Medicine, 42nd and Dewey,Omaha, Nebraska 68105. Accredited animal care fa-cility. Send curriculum vitae, list of publications,and names of three references to Dr. Wayne Ryan,Assistant Dean for Research. The University of Ne-braska is an Equal OpportunitylAffirmative ActionEmployer.

POSITIONS OPEN

DEAN, SCHOOL OF PHARMACYFerris State College invites nominations and applica-tions for the position of Dean, School of Pharmacy.The School of Pharmacy is among the largest under-graduate programs of its kind in the United States.Applicants should present evidence of significant ac-ademic and administrative experience, as well as aneducational background in pharmacy and experiencein pharmaceutical education. Salary is open and willbe based upon the qualifications of the person em-ployed.Ferris State College is located on a 600-acre campusand enrolled approximately 9500 students during thefall quarter 1975-76.It is preferred that the appointment of the Dean beeffective in July 1976, or as soon thereafter as pos-sible. Nominations and applications with current re-sumes and references should be submitted as soonas possible to:

James V. Farrell, ChairpersonSearch Committee for Dean

Ferris State CollegeBig Rapids, Michigan 49307

An Equal Opportunity/Affirmative Action Employer

DEAN OF PHARMACYThe University of Arizona invites applications forthe position of Dean, College of Pharmacy. Appli-cants should have a doctoral degree; a demonstratedcapability for administration and management;knowledge about extramural sources of funding andsupport; a sensitivity to balancing the needs of aPharmacy College with those of the state in which itis located; and a willingness to maintain strong tieswith registered pharmacists in the state through, butnot limited to, programs in continuing education. Ap-plicants should forward a curriculum vitae to VicePresident for Health Sciences, Arizona Medical Cen-ter, Tucson, Arizona 85724. The University of Ari-zona is an Equal Opportunity/Affirmative Action Em-ployer under state andfederal laws and regulationsincluding Title IX, 1972 Education Amendment.

DIRECTORDIVISION OF APPLIED SCIENCEAT NEW YORK UNIVERSITYto supervise academic programs in

energetics and fluid dynamicsand to

coordinate and conduct research in energetics,fluid dynamics, and atmospheric sciences.

New York University is committed to the principle ofEquality ofOpportunity in Employment.

Please send nominations and resumes to:Professor Benjamin Bederson, Chairman

Search CommitteeNew York University-Washington Square

Physics Department4 Washington Place

New York, New York 10003

FACULTY POSMON: assistant professor; under-graduate institution. Ph.D. required. Strength in ver-tebrate physiology and one of the following: ich-thyology or mammalogy. Opportunity for research.Reply with current curriculum vitae and graduatetranscripts by 15 May 1976 to: Chairperson, Biology,HDlo College, University of Hawaii at Hilo, Box 1357,Hilo, Hawaii 96720. Position subject to state funding.An Equal OpportunitylAffirmative Action Employer.Minority and women candidates are encouraged toreply.

FACULTY OPENINGHARVARD UNIVERSITY

The Harvard School of Public Health has two posi-tions open at the level of assistant or associate profes-sor of economics. Applicants should have an academ-ic background in health economics, environmentaleconomics, or in the general problems of regulationpolicy. Teaching will be primarily centered at theSchool of Public Health, with graduate students andexecutives from the health field who return to schoolfor short, intensive courses. There is also a likeli-hood of teaching responsibilities in the EconomicsDepartment of Faculty of Arts and Sciences and/orat the Kennedy School of Government. Ph.D. in eco-nomics required. Ph.D./M.D. preferred. Send curric-ulum vitae to Box 219, SCIENCE.Harvard University is an Equal OpportunitylAf-

firmative Action Employer.579

POSITIONS OPEN

EXECUTIVE POSITION IN SCIENTM1CAND TECHNICAL INFORMATION

The Smithsonian Science Information Exchange(SSIE) invites applications from qualified individualsfor the position of Vice-President and Director of theScience Divison. Candidates should possess a Ph.D.in one of the physical sciences. Research experi-ence, demonstrated management abilities, and an in-terest in the techniques involved in the organizationand processing of scientific and technical informa-tion are essential.Responsibilities include direction of SSIE's sciencestaff and management of major contract service ac-tivities through which SSIE applies the research in-formation in its data base to the analysis, planning,and research program management needs of its ma-jor users. This is a career position which offers ex-cellent opportunities for professional interactionwith both the research and the information sciencescommunities.Interested applicants should send a curriculum vitaeto Dr. David F. Hersey, President, Smnthaonlan Sci-ence Information Exchange, Room 300, 1730 M St.,NW, Washngton, D.C. 20036. SSIE is affiliated withthe Smithsonian Institution and is an Equal Opportu-nitylAffirmative Action Employer.

General Foods Technical Center is seek-ing a person with MS or Ph.D. in Bio-chemistry, and knowledge of mam-malian physiology. This bench-levelposition requires 1-2 years experience inbiochemical techniques. Experience inenzymology and microbiology helpful.Good written and oral communicationsskills necessary.Position provides commensurate salaryand full range of benefits. Reply fullywith resume (please do not phone) andsalary requirements to Personnel As-sociate,

GENERAL FOODSGrCORPORATION

*-1F 555 South BroadwayTarytown, New York 10591

an equal opportunity employer, m/f

580

HISTOLOGY LAB DIRECTORAND TECHNICIAN

1) Scientdst with Ph.D. and several years of experi-ence to head service histology laboratory at privateresearch institute. Must be versed in preparation oftissue, analysis of structure, and autoradiographywith both light and electron microscopy. Must haveexperience working with neural tissue. Person willcollaborate with other staff members on existing re-search projects.

2) TechnIcian with at least 3 years of experience inareas specified above.

Salaries negotiable.Please send curriculum vitae and references to Dr.

L. Reif-Lehrer, Eye Research Institute of RetinaFoundation, Boston, Mass. 02114.

INVERTEBRATE ZOOLOGISTAssistant or associate professorship available Au-

gust 1976. Applicant must have the Ph.D. and sub-stantial training in freshwater invertebrate zoologywith research and teaching interests in this field.Duties will include teaching at graduate and under-graduate levels and maintaining an active researchprogram. Send curriculum vitae including reprints,statement of teaching and research interests, gradu-ate and undergraduate transcripts, and three lettersof reference by 1 June 1976 to:

William H. Darden, ChairmanDepartment of Biology

P.O. Box 1927University of Alabama

University, Alabama 35486An Equal OpportunitylAffirmative Action Employer

Rosenstiel School of Marine and Atmospheric Science,Division of Marine Geology and Geophysics, Universi-ty of Miami. Vacancy for MARINE GEOPHYSICISTon the faculty, with responsibilities for some teach-ing and the development of a marine geophysics pro-gram. We desire someone with broad interests, whowishes to go to sea, and who will interact with othermembers of the Division. Level of appointment willbe based on experience. Applications should be sentto Dr. C. G. A. Harrison, Rosenstiel School of Marineand Atmospheric Science, 4600 Rlckenbacker Cause-way, Miami, Florida 33149. The University ofMiamiis an Equal OpportunitylAffirmative Action Employ-er.

PATHOLOGY POSITIONS available: Departmentof Pathology, Louisiana State University School ofMedicine-Shreveport. Academic pathologists withservice capabilities and special interests needed.Should be Board-certified. Interested pathologistsconsidered at any academic level. Inquiries or curric-ulum vitae should be sent to Dr. A. G. Smith, Depart-ment of Pathology, Louisiana State University Schoolof Medicine-Shreveport, Box 3932, Shreveport, Loui-siana 71130. An Equal Opportunity Employer.

TWO POSTDOCTORAL POSITIONSPSYCHOBIOLOGY

Beginning between 1 June and 31 December 1976for 2 years. (i) Mechanisms of action of hallucinogen-ic drugs and the physiological and behavioral rolesof CNS serotonin using electrophysiological, phar-macological, neurochemical, and behavioral ap-proaches. (ii) Visual functions of inferotemporal cor-tex in anesthetized and behaving monkeys (previousexperience in single neuron electrophysiology desir-able).

Send resum6 with three references to:Dr. Barry Jacobs or Dr. Charles Gross

Department of PsychologyPrinceton UniversityPrinceton, N. J. 08540

POSTDOCTORAL POSITION to participate in workon the molecular basis of globin gene expressionwith interest in fetal hemoglobin production in tissueculture. Send curriculum vitae and two letters of rec-ommendation to:

Dr. Arthur L. BeaudetDepartment of PediatricsBaylor College of Medicine

Houston, Texas 77030An Equal Opportunity Employer

Ph.D. MARINE BIOLOGIST

Immediate opening for a marine biologist to be re-sponsible for comprehensive biological and ocean-ographic studies. Ph.D. and field experience re-quired. Plankton or benthos specialist preferred. Po-sition will involve data analysis and report writing.

Pandullo Quirk Associates attractive benefits pro-gram includes 4-day work week. Please send rdsumdand salary requirements to:

Director of PersonnelPANDULLO QUIRK ASSOCLATES

Gateway 80 Office ParkWayne, N.J. 07470

MICROBIOLOGYFaculty position available. 1 September 1976. Assist-ant professor of microbiology ($19,0004$20,500).M.D. (preferred), D.D.S., or Ph.D. with at least 3years of postdoctoral experience in teaching and re-search in medical microbiology and immunology. Po-sition requires: (i) teaching microbiology and immu-nology to medical, dental, graduate, and under-graduate students and supervision of graduatestudent research; (ii) establishment of research activ-ities in clinical immunology and immunopathology.Send curriculum vitae and list of publications to Dr.Felix Milgrom, Professor and Chairman, Departmentof Microbiology, Box F, 203 Sherman Hal, State Uni-versity of New York at Buffalo School of Medicine,Buffalo, N.Y. 14214. State University ofNew York atBuffalo is an Equal Opportunity/Affirmative ActionEmployer, actively seeking women and minority can-didates.

PLANT ANATOMY AND GENERAL BIOLOGY:The Biology Department, Utah State University,has a position available as assistant professor with a

beginning salary of $12,000 to $12,500 on a 9-monthcontract. The position will provide an excellent op-portunity to develop an independent research pro-gram. Candidate must have a Ph.D. and a broadtraining in botany, especially in plant anatomy.Deadline for applications will be 15 May 1976. Sendcurriculum vitae, reprints, and three references toProfessor Arthur H. Holmgren, UMC 45, Utah StateUniversity, Logan, Utah 84322.

POSTDOCTORAL POSITION to participate in re-search on the role of cyclic nucleotides in the controlof smooth muscle tone. Major emphasis will be aninvestigation ofphosphoprotein phosphatases and ki-nase modulators. Experience in biochemistry de-sired, experience in tissue culture helpful. AvailableI August 1976. Send curriculum vitae and letters ofrecommendation to: Dr. Howard Sands, NationalJewish Hospital, Division of Molecular and CelhllarBiology, Denver, Colorado 80206.

POSTDOCTORAL RESEARCH POSITION. Inter-actions of near-UV radiation and cells. Ph.D. in bio-logical sciences or biochemistry required. Trainingdesired in two of the following: membrane studies,biochemistry, bacteriology, physics. Two-year posi-tion. Indication of ethnicity and sex for AffirmativeAction statistical purposes is requested but not re-quired. Send curriculum and letters by 1 June to Dr.John Jagger, The University of Texas at Dallas, Box688, Richardson, Texas 75080. An Affirmative Ac-tionlEqual Opportunity Employer.

POSTDOCTORAL RESEARCH ASSOCIATE

Position available for recent Ph.D. trained in mam-malian genetics, to work on genetic relationships inhypertension. Training in the genetics of contin-uously varying traits is desirable. Send curriculumvitae and names of three references to: Dr. E. P.

Cronkite, Chairman, Medical Department, Brookha-ven National Laboratory, Upton, Long Island, N.Y.11973. An Equal Opportunity Employer, MIF.

RESEARCH ASSOCIATE IN PHYSICAL OCEAN-OGRAPHY. Ph.D. in physical sciences, workingbackground in hydrodynamics, meteorology, orphysical oceanography, and capability to initiate in-dependent research. Strong interests in relationshipof ocean circulation theory to observations and will-ingness to plan and participate in field programs. Ini-tial 2-year appointment will be supported primarilyby ongoing research programs. Apply to Dr. PeterNUler, School of Oceanography, Oregon State Univer-sity, Corvallis, Ore. 97331. An Equal OpportunityEmployer.

SCIENCE, VOL. 192

FOOD REGULATIONSADMINISTRATOR

Applicants must have B.S. degree in foodtechnology, chemistry, microbiology, or anyscientific discipline with food processing ex-perience. Courses in law desired. Serve as li-aison to all levels of management concerningapplication of food and drug laws. Only re-sum6s containing salary history will be con-sidered. SUNKIST GROWERS, INC., P.O.Box 7888, Van Nuys, California 91409. Af-firmative Action/Equal Opportunity Employ-er, MIF.

; iI I~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

9

POSITIONS OPEN POSITIONS OPEN

Nutritionm

Phyiology

Lab ManagerPhD in Biochemical SciencesGeneral Foods Technical Center has immedi-ate opening for a Manager of Nutrition andPhysiology Research. Candidate we seekmust have a proven record of accomplish-ment in research, an interest in the pharma-cology of food-related materials, and demon-strated managerial abil-ities.

You'll be fully responsible for leading theresearch activities of a highly professionalgroup of PhD scientists and support person-nel. Objectives offer both stimulating chal-lenge and opportunities to make meaningfulcontributions In the health sciences. TheGeneral Foods Technical Center provides ex-cellent laboratory facilities, a thorough pro-fessional environment, and potential for fullcareer development. Our location in suburbanWestchester County, offers choice of urbanor suburban living in an attractive area justnorth of New York City. Please send resume(do not phone) with salary history and re-quirements to: Personnel Associate, Room507S.

GENERAL FOODS.. CORPORATION

; O:.Q 4+ OrDnI ..uwvaozoa ouxtn oroaowayTarrytown, New York 10591Equal Opportunity Employer, M/F

Wiley-InlerscienceFor the interscientist.

TECHNIQUES OF ENVIRONMENTALSYSTEMS ANALYSIS

R. H. PantellA multi-discipline text that supplies readers with an.overview of the techniques useful for their systematicanalysis of environmental systems. Systems are notconstrained to physical structure, but include economic,social factors. Emphasis is on the common basis forattacking a wide variety of environmental problems.Students, city planners, environmental engineers,and economists will find this a diverse guide with awide-range of possibilities. 0-471-65791-3 1976$12.95

INTRODUCTION TO MICROCOMPUTERSAND MICROPROCESSORSArpad Barna & Dan 1. Porat

A complete introduction to the hardware (circuit) andsoftware (programming) facets in this ever-growingfield. Provides basic knowledge required to comprehenddata sheets and literature supplied by manufacturersof microcomputers and microprocessors. 120 examplesand problems make self-study easy. Referencesprovide additional material. 0-471-05051-2 1976$10.50

MARINE SEDIMENT TRANSPORT ANDENVIRONMENTAL MANAGEMENT

Edited by Daniel Jean Stanley & Donald J. P. SwiftDescribes principles of continental margin sedimenta-tion and their application to marine environmentalmanagement. Four major section's feature: patterns ofwater circulation, mechanics of sediment entrain-ment and transport by flowing water, regional patternsof sedimentation, and fluid dynamics and principlesof sedimentation applied to environmental managementproblems-for those concerned with problems ofsediment transport in the marine environment. Dis-cusses management of mineral resources, foodresources, beach and harbor defense, waste disposal,construction of offshore structures, more.0-471-02540-2 1976 $35.00

,

RESUME WRITINGA Comprehensive How-To-Do-It Guide

Burdette E. BostwickA management-oriented guide that gives a step-by-stepapproach to writing an effective resum6. Describesand gives examples of 10 types of r6sum6s and showsjob seeker how to bring out their goals, personali-ties, and attributes. Includes coverage of what employerswant in a r6sum6, what to omit, a glossary of motivatingwords, phrases, sentences, and paragraphs. Gives valu-able source lists of companies. 0-471-09060-3 1976$9.95.MICROPROCESSORS AND MICROCOMPUTERS

Branko SoucekHere's a description of the application, programming,and interfacing techniques common to all micro-processors, concentrating on detailed descriptions ofrepresentative microprocessor families. Engineers,scientists, managers, professors, and students will findthis the perfect reference to microprocessor techniques.0-471-81391-5 1976 $23.00Available at your bookstore or write to CustomerInformation, Dept. A5610-WI.

WILEY-INTERSCIENCEa division of John Wiley & Sons, Inc.605 Third Avenue, NewYork, N.Y. 10016In Canada: 22 Worcester Road, Rexdale, Ontario

Prices subject to change without notice. 092 A561 0-WI

581

AUDIOLOGIST(GS-665-13/14)

or

PSYCHOLOGIST(GS-180-13/14)

COMMUNICATIVE DISORDERS PROGRAMNATIONAL INSTITUTE OF NEUROLOGICAL DISEASES

AND STROKE, NIH, PHSREQUIRED: Minimum of three years experience in experimentaldesign, research methodology and experimental evaluation pro-cedures. Successful candidate should possess a Ph.D. or equivalentin the hearing sciences.DESIRABLE QUALIFICATIONS: Clinical audiology experience withinfants, children and adults; demonstrated research competence inacoustics, noise trauma and auditory rehabilitation (amplificationand speech reading); and experience in the administration of grantsand/or contract clinical research programs.The Communicative Disorders Program is responsible for the plan-ning, coordination and conduct of research aimed at the diagnosis,treatment and prevention of varied disorders of human communica-tion and other sensory systems. Incumbent assists the Director inplanning and formulating the Institute's communicative disorders re-search program, including the development of scientific policy,evaluation of the current status of programs, and the developmentof recommendations concerning areas for program emphasis. In-cumbent's primary responsibilities will be developing, encouragingand overseeing research projects, with special concern for problemsof audition. Although incumbent's responsibilities involve primarilyresearch administration, it is possible that opportunities for inde-pendent research will exist. This position is in the Career CivilService.

TO APPLY: Submit SF-171 to:

NINCDS Personnel Office

NATIONAL INSTITUTES OF HEALTHPublic Health Service

Bldg. 31, Room 8A-23, Bethesda, Md. 20014, (301) 496-6334Deadline for receipt of application is May 31, 1976

Equal Opportunity Employer

POSITIONS OPENP

POLMCAL SCIENTIST/POLICY ANALYSTTO DO TECHNOLOGY ASSESSMENT

The Science and Public Policy Program and De-partment of Political Science are seeking a politicalscientist (policy analyst) for a minimum 2-year vis-iting professor position as a member of an inter-disciplinary technology assessment team. The posi-tion will be available I June 1976. Although primari-ly a research position, there will be teachingopportunities. Required qualifications are a back-ground in policy analysis, preferably applied, andthe ability to work as a part of a team comprised ofnatural scientist, engineers, and social scientists.Rank and salary will be commensurate with qualifi-cations.

The University is an Equal Opportunity Employer;women and members of minority groups are encour-aged to apply. Please send a copy of your curricu-lum vitae, letters from three professionals, and re-prints or copies of any papers you deem appropriateto Don E. Kash, Director, Science and Public PolicyProgram, University of Oklahoma, 601 Elm Avenue,Room 432, Norman, Oklahoma 73069.

POSTDOCTORAL POSITIONS available at theUniversity of California-San Diego.

1) Somatic Cell Genetics-Dr. Immo Scheffler.2) Molecular Biology ofTumor Viruses-Dr. Mel-

vin H. Green.Send resume and two letters of recommendation

to one of the above:Department of Biology B-022

University of California-San DiegoLa Jolla, California 92093

An Affirmative Action Employer

POSTDOCTORAL POSITION

Available September 1976, a 1-year postdoctoralappointment at $10,000. Research on cytogenetics ofmesophyll protoplasts of potato and of plants regen-erated therefrom. Training in plant cytogenetics andexperience with plant cell tissue cultures preferred.Send resume and two letters of reference to:

James F. ShepardDepartment of Plant Pathology

Montana State UniversityBozeman, Montana 59715

POSTDOCTORAL RESEARCH FELLOWPh.D. in biochemistry with interest and com-

petence in protein chemistry. To study biosynthesis,structure, and function of human hemoglobin vari-ants, including investigation of the sickling phenome-non. Available I July 1976. U.S. citizens and per-manent residents. Salary: $10,000 to $12,500 depend-ing on relevant experience. Submit curriculum vitae,three letters of reference, and brief statement of re-search interests to Dr. H. Franklin Bunn, Peter BentBrigham Hospital, Boston, Mass. 02115. HarvardMedical School is an Equal Opportunity/AffirmativeAction Employer.

RESEARCH ASSOCIATE. Experimentalist requiredfor research on turbulent and lower-hybrid reso-nance heating of laboratory plasmas, some supervi-sion of graduate students, and occasional teaching oflaboratory plasma courses. Ph.D. in plasma physics,relevant research and teaching experience, and a

substantial publications record are required. Salary:about $16,000. Send letter of application and curricu-lum vitae before June 1976 to: F. W. Crawford,Chairman, Institute for Plasma Research, StanfordUniversity, Stanford, Calif. 94305. An Equal Oppor-tunity/Affirmative Action Employer.

582

PHYSICAL OCEANOGRAPHERThe Chesapeake Bay Institute of The Johns Hop-

kins University has an opening for a physical ocean-ographer. Applicants should have a Ph.D. or equiva-lent research experience and an interest in workingon either theoretical or practical estuarine and coast-al problems. Experience in numerical modeling help-ful. Rank and salary negotiable, depending on experi-ence. Initial appointment will be made in summer1976. Applicants should submit a resume and namesof three references to Chairman, Search Committee,Chesapeake Bay Institute, The Johns Hopkins Univer-sity, Baltimore, Maryland 21218. The Johns HopkinsUniversity is an Equal OpportunitylAffirmative Ac-tion Employer.

UNIVERSITE LAVALDEPARTEMENT DE PHYSIQUEPOSTE DE PROFESSEUR ENASTRONOMIE OPTIQUE

Le departement de Physique de l'Universite La-val requiert les services d'un professeur pour destfiches d'enseignement et de recherche en astro-nomie optique. Le candidat devra participer a lamise au point de l'equipement scientifique d'un nou-vel observatoire astronomique dont l'instrumentprincipal sera un telescope d'environ 1.5 metred'ouverture. Il pourra profiter en outre d'un tele-scope de 0.5 metre. Enfin sa collaboration avecd'autres equipes de recherche du departement,comme par exemple en spectroscopie ou en traite-ment des images, sera vivement souhaitee.Le rang professoral et le traitement seront en fonc-

tion des qualifications et de l'experience.L'engagement se fera durant l'ete 1976.

Les candidats sont pries de faire parvenir leur cur-riculum vitae, deux lettres de reference, et touteautre documentation appropriee a:

Le DirecteurDepartement de Physique

Universite LavalQuebec GlK 7P4

Canada

NATIONAL RESEARCH COUNCILNATIONAL AERONAUTICS AND SPACE

ADMINISTRATIONRESIDENT RESEARCH ASSOCIATESHIPSTenable at the Jet Propulsion Laboratory

California Institute ofTechnologyOpportunities exist at the Jet Propulsion Laborato-

ry for recent or imminent doctoral graduates to par-ticipate in an ongoing program of high-resolution as-

tronomical infared spectrometry. (Awards will bemade on a competitive basis.) The principal in-strumentation employed is a 1-6 micrometer Con-nes'-type Fourier spectrometer at the 2.7-meter tele-scope of the McDonald Observatory, University ofTexas. Although the program (operated jointly withthe University of Texas at Austin) covers both late-type stars and planets, preference will be given to ap-plicants interested in solar system astronomy.

Further details on the research program can be ob-tained from

Dr. Reinhard BeerJet Propulsion Laboratory4800 Oak Grove Drive

Pasadena, Calfornia 91103General information and application materials can

be obtained fromNational Research Coundl

Assodateship Office (JH 606-j)2101 Constitution Avenue, NW

Washington, D.C. 20418

VICE CHANCELLORFOR

RESEARCH AND ADVANCED STUDYUNIVERSITY OF ALASKA, FAIRBANKS

The Vice Chancellor will have overall responsibili-ty for the research and advanced study beyond thebaccalaureate degree at the University of Alaska atFairbanks, subject to the general policy and intent ofthe Chancellor. This person will represent the Uni-versity's research interests at the international, na-tional, and state level.

Qualifications include high academic achievement(Ph.D. or equivalent in training and experience) andsuperior record of scholarship as demonstrated byresearch publications and professional recognition;broad interests in scholarly endeavors and advancedstudy; administrative and organizational capability,including financial management; familiarity with thepolicies and programs of federal and state agencies.

Salary is dependent upon qualifications and experi-ence. Applications and resumes should be sent to:Dr. Charles Ray, Chairman, Search Committee,School of Education, University of Alaska, Fairbanks,Alaska 99701. Applications must be postmarked by21 May 1976. The University of Alaska is an EqualOpportunitylAffirmative Action Employer.

ZOOLOGICAL LIMNOLOGIST

Must be able to teach invertebrate zoology, teachand/or coordinate general zoology. Ph.D. required.Appointment (teaching-research) at assistant profes-sor level. Position is tenure earning. Postdoctoral orindustrial experience desirable. Salary competitive,based on experience. Send curriculum vitae, copiesof all undergraduate and graduate transcripts, andthree names for references to:

Chairman of Search CommitteeDepartment of Biology

The University of Alabama in HuntsvilleHuntsville, Alabama 35807

Application deadline is 15 June 1976.The University of Alabama in Huntsville is an Af-firmative Action/Equal Opportunity Employer.

SYMPOSIUM

The THIRD ANNUAL NATIONAL CENTER FORTOXICOLOGICAL RESEARCH (NCTR) HOR-MONE RESEARCH SYMPOSIUM will be held 15 to17 November 1976 at Little Rock, Arkansas. The1976 symposium will consist of formal presentationsby invited speakers and informal poster sessions byattendees desiring to exhibit posters related to topicsdiscussed by the invited speakers. Topic areas arehormonally active substances in the food chain, regu-latory mechanisms involved in estrogen-gonadotro-pin secretion and action, metabolism, toxicity andclinical studies with oral contraceptives, and hor-mone receptors and cellular response in reproduc-tive tissue.

For additional information, please write MichaelNorvell, Ph.D., Chairman, Third Annual HormoneResearch Symposium, NCTR, Jefferson, Arkansas72079.

MARKET PLACE

FOR SALESiemens Elmiskop I, Modified to IA. Ac-cessories include: closed circuit waterrecirculator, solar transformer and sparepart kit. Price $9,000.

PESTO INTERNATIONAL CO.Electron Microscope Services

27 Sands Point RoadPort Washington, N.Y. 11050

Phone: 516.883-3021

SCIENCE, VOL. 192

Am Zoologischen Institut I der UNIVERSITAT HEIDELBERG ist zum WS 1977/78die Stelle eines

ordentlichen Professors (AH 4jwieder zu besetzen. Der Stelleninhaber soll in Forschung und Lehre Morphologie,Okologie, und Systematik (vorzugsweise der Evertebrata) vertreten.Bewerbungen mit Schriftenverzeichnis und Lebenslauf werden bis zum 31 Mai 1976an die Universitiit Heidelberg, Postfach 105760, 6900 Heidelberg 1, Federal Republic ofGermany, erbeten.

VIROLOGIST. Position available im-mediately to join research group work-ing on mammalian RNA oncogenic vi-ruses. Experience in tissue cultureand viral technology required. Rankand salary will be determined by quali-fications. Box 230, SCIENCE.

1.

POSITIONS OPENPOSITIONS OPEN

The Southwestern Field Studies Sec-tion, Epidemiology and Field StudiesBranch, National Institute of Arthritis,Metabolism and Digestive Diseases,National Institutes of Health, Phoenix,Arizona, invites applications for thepositions of Staff Physician for open-ings in July 1976 and July 1977.Successful candidates will be com-missioned in the PHS CommissionedCorps and will be eligible for VariableIncentive pay (a yearly bonus offrom $11,000 to $13,500). Candi-dates will also be entitled to allow-ances for tax free quarters and sub-sistence.

The work will focus primarily onthe epidemiology of diabetes mellitus,and in particular on its distributionin the Pima Indians. The initial groupof Pima Indians studied has nowbeen under surveillance for diabetesfor a ten year period. As a conse-quence of the length of follow-up itis now possible to evaluate factorswhich precipitate diabetes and whichaccelerate, precipitate, or ameliorate

the vascular complications of dia-betes mellitus. The availability ofthis ten-year follow-up data providesthe most extensive information evergathered on the natural history anddevelopment of diabetes and on itsvascular complications.

Incumbent of position will alsohave opportunity to participate inin-patient clinical investigations intometabolic problems prominent amongSouthwest American Indians-choles-terol cholelithiasis, cholesterol metab-olism, diabetes mellitus, and obesity.

The passage of the "National Dia-betes Mellitus Research and Educa-tion Act" has focused wide attentionto the emphasis placed on efforts toconquer this disease. Worldwide Inter-est is tuming toward the availabilityof the collaborative basic and clini-cal research possibilities in the Phoe-nix projects and the data available.Any physician Interested In becom-

ing a part of this exciting effort,please contact:

Dr. Peter H. Bennett, Chief Epidemiologyand Field Studies Branch, NIAMDD

NATIONAL INSTITUTES OF HEALTHPublic Health Service

1440 East Indian School Road, Phoenix, Arizona 85014Telephone: (602) 261-3568

An Equal Opportunity Employer M/F

JointheFuture inTransportationSystemsEngineeringat MaTRE.MITRE has openings in intercity

ground transportation system en-gineering and planning. Excellentopportunities are available in ad-vanced railroad technology de-velopment for both freight andpassenger systems. Here are twospecific openings:* SENIOR DYNAMICS ENGINEER.You need an advanced degree inengineering mechanics, appliedmathematics or mechanical en-gineering with background indynamic modeling of complexstructures. Plus, experience in hard-ware development, systems en-gineering and familiarity withground transportation modes.* ELECTRICAL ENGINEER. Youneed an advanced EE degree withbackground in electrical machines,and recent industrial experience incomputer modeling, industrial testprocedures and modern controltechniques for induction motors,and a familiarity with design ofinverters and converters for in-duction motor controls. You willconduct experiments of linear in-duction motors for application tomagnetic levitation. Special skillsrequired include current industrialcomputer aided design and model-ing techniques of induction motors,as well as modeling saturationeffects in electrical machines.MITRE is a leading non profit

systems engineering companyworking wholly in the publicinterest, and located in a suburbancommunity outside Washington,D.C. If these technical positionssound like the new opportunitiesyou seek, you are invited to submita resume including salary historyin absolute confidence to:

Mr. W. X. ConwayThe Mitre CorporationDept. A- 6,1820 Dolley

Madison Blvd.McLean, Virginia 22101

THE

MITREEqual Opportunity Employer M/F

Tecnicalecellnce

presiona chal.

STAFF PHYSICIANSPhoenix, Arizona

Di y u k(nowv . a . . a . . a a . a . . a 6

That cancer epidemiologists estimate that 50 to 90%ofhuman cancers are produced by our environment?

That cancer is described as being 1 00 differentdiseases?

About 220, 000 Americans were treated successfullyfor cancer in 1975, and it is estimated that half againthat many could have been saved by earlier or bettertreatment?

These and other facts are brought forth in CANCER, a new audiotapealbum from AAAS. During interviews with science journalists BarbaraJ. Culliton and Wallace K. Waterfall, nineteen recognized authoritiesprovide some thought-provoking new ideas as well as an overview ofcurrent progress in cancer research, therapy, and rehabilitation. Eachbook-'style album contains four hour-long cassettes, plus a 40-pagebooklet that provides an excellent synopsis of the interviews. Orderyour album now. Or, order a copy of the CANCER booklet alone.CANCER album: $49.95 retail; $44.95 AAAS members, prepaidCANCER booklet: $2.50 retail; $2.00 AAAS members, prepaid(Please allow 6 to 8 weeks for delivery)

Send orders to Dept. C-3American Association for the Advancement of Science1515 Massachusetts Avenue, N.W.Washington, D.C. 20005

L

An ad more or less about the dyes in color photos

Quenching of Singlet Molecular Oxygen inSolution by Azomethine Dyes

Wendell F. Smith, Jr., William G. Herkstroeter, and Kenneth L. EddyContributionfrom the Research Laboratories, Eastman Kodak Company,Rochester, New York, 14650. Received August 16, 1974

[Journl n erican Chemical So gj 97, 2764(1975)_

Background: The two valence electrons of the 02 molecule inits lowest energy state have parallel spins. This is unusual.Most molecules with an even number of electrons have sin-glet ground states. "Singlet" implies that every electron ispaired with another of opposite spin. For the oxygen mole-cule, that state (written 102) represents excitement. To attainit, radiation must be absorbed or energy must be acquiredfrom some other excited molecule. Evidence has been ac-cumulating in recent years that singlet molecular oxygen is

Gist: A new class of 102 quenchers has been discovered: azo-methine dyes. Yellow azomethine dyes, absorbing light in theblue, are the least efficient 102 quenchers. The most efficientare the cyan ones, absorbing in the red, the low-energy end ofthe visible spectrum. Magenta dyes, which absorb green light,

An inquisitive outsider to this field might ask these chaps:Are azomethine dyes new?Eddy: Not exactly. All three dyes in Kodak color prints andnegatives and in Kodachrome and Ektachrome -slides havebeen azomethines. An azomethine contains this structure:

Does efficiency in quenching singlet molecular oxygen influ-ence dye stability as a practical matter?Smith: Quenching of singlet oxygen by the dye is a reaction

A published paper like the above is fallout from a continuingprime effort directed toward improved dye stability in colorfilms and color prints. Conditions that foster long life for pho-tographic color images are low temperature, low humidity,pure air, and darkness. For display, tungsten imnation withits low ultraviolet content is usually less damaging than fluo-rescent lights. If satisfactory color appearance demands day-light viewing, make it indirect daylight. For long-term storage

involved in the formation of air pollutants and in such funda-mental business as photosynthesis and the digestion of mi-crobes by white blood cells. While the list of molecules whichwill react with 102 is growing rapidly, the list of moleculeswhich will quench 102 back to 02 is much smaller. This isbecause the excitation energy of 102 is unusually low; aquencher molecule to relieve 102 of this energy must havean even lower excited state.

are intermediate in their quenching efficiency. The quenchingproceeds by the formation of an excited complex of the dyewith 102. The binding energy of the excited complex varieswith the structure of the particular azomethine dye.

that competes with the reaction of dye destruction by singletoxygen. Therefore the faster the quenching reaction relativeto the chemical reaction, the better.What is the significance of the binding energy of the excitedcomplex?Smith: Other things being equal, the greater the binding en-ergy, the better the dye would be as a quencher.What happens to the azomethine dyes after they have beenquenched?Herkstroeter: The quenching reaction with singlet oxygenraises -them from their ground state to their lowest excitedelectronic state. Because of their ability in this state to twistabout the carbon-nitrogen double bond, the return to theground state is rapid. The overall result is to protect the dye.

of color transparencies and negatives, we recommend 35For lower and moistureproof wrapping. (The lower the better.)Detailed suggestions are offered inPamphlet E-30, "Storage and Care ofKODAK Color Films," available onrequest from Dept. 55W, Kodak, Roch- Uester, N.Y. 14650.