Document LK8JGLb0qzgOVbNBxZOw8a0Yb

Industrial Hygiene Digest INDUSTRIAL HEALTH NEWS LITERATURE ABSTRACTS MEDICAL ENGINEERING CHEMICAL AUGUST, 1954 (Vol. 18. No. 8) INDUSTRIAL HYGIENE FOUNDATION FOUNDATION FACTS Volume 16 August, 1954 Foundation Fact* U a monthly nw-uttr Itiuod to induitrial concorna holding moniborahlp In Industrial Hygfan* Foundation. The Foundation io a nonprofit atooeiatlon ot Induitrioo for tho advancement of healthful working eonditlona. No. 8 WALMER ON CIVIL DEFENSE COMMITTEE Dr. C. Richard Walmer, Managing Director of Industrial Hygiene Foundation, lias been made a member of the advisory committee to study th iejijSe problem \ r ^|tn Pittsburgh and Allegheny County and to aid in civil defens^activ^twt^^^'Nv i A(J6 po. LAN2A MADE PROFESSOR EMERITUS Dr. Anthony J. Lanza, a Trustee of the Foundation a* ST field ppf industrial medicine, has been made professor emeritus of NewrSkkddHi^trsity-* Jellevue Medical Center's Post-Graduate Medical School, from which he is retiring at !tbe end of the academic year. A faculty member since 1947, he has served as professor chairman of the department of industrial medicine and director of the Medical Center's istitute of Industrial Medicine. He will continue as consultant for the Institute. )r. Lanza has been active in the field of industrial medicine and hygiene since 1906 and contributed much to its advancement while serving in important government and indus trial posts. NEW PERSONNEL Miss Ethel Tolker has been added to the staff of the Foundation's toxicology ^laboratory as research assistant. One of her main duties will be the preparation of tissue ^specimens for microscopic examination. Miss Tolker is a graduate of the University of ^Maryland and was formerly associated with St. Joseph's Hospital in Pittsburgh. CHEMICAL-TOXICOLOGICAL COMMITTEE APPOINTMENTS . Two new members appointed to the Chemical-Toxicological Committee are: Ml. V, Hendricks, Head of the Industrial Hygiene Section, Esso Laboratories, Standard [ Oil Development Company; and H. E. Stokinger, Chief Toxicologist, Division of Special Health Services, U. S. Public Health Service, Cincinnati. NEW REPRINT AVAILABLE Reprints are available upon request of a paper on "A New Apparatus for the Partitioning of Expired Air of Small Animals", by Paul E. Palm, Kenneth M. Cook, [' Jack H. U. Bpown, and Theodore Hatch, published in the Review of Scientific Instruments, [ Vol. 25, No. 6, 576:579, June, 1954. . ` ' ' I-H-F IWDIM. HVQIcmc FOUNDATION 4AOO FIFTH AVCNUC PITTSaultON ua). M. industrial Hygiene Digest August, 1954 upon the PH, From albumin solutions having a concentration comparable with plasma only about one-tenth of the available adsorption sites on a quartz surface are filled at PH 7.4. The adsorption of proteins upon the quartz surface is not considered to be an important aspect of the silicosis problem. -- Authors' conclusions 905 The Presence of Asbestos Fibers in Urine of Workers Exposed to Asbestos Hazard. V. Wyss. Rass. med. ind. 22, 55-56 (1953). Italian. In urinary sediment of two asbestos workers asbestos fibers were seen; the same finding was detected in urine of two female patients suffering from as- bestosis, who had left their work seven years before. -- Biol. Absts. PHYSICAL ASPECTS OF THE ENVIRONMENT 906 Some Practical Aspects of Industrial Noise Measurement. L. J. Proulx. Arch. Ind. Hyg. &: Occ. Med. 9, 496-502 (June 1954). Some of the instrumentation problems faced by an engineer who must evaluate industrial noise environments are discussed. An array of equipment which includes a sound level meter, octave band analyzer, tape recorder,, .dynamic microphone, audio oscillator, vacuum tube voltmeter, high-fidelity crystal head phones, cathode ray oscilloscope, and a good quality loudspeaker is described. The use of the tape recorder and oscilloscope for measuring impact noises is ^given.particular attention. Various calibration checks are described. 907 The Locus of Short Duration Auditory Fatigue or "Adaptation." J. D. Harris and Anita L. Rawnsley. J. Exptl. Psychol. 46, 457-461 (1953). Auditory adaptation, defined as a reversible shift in threshold following very mild acoustic stimulation, was distinguished from true auditory fatigue by four criteria: (l) the non-cumulative effect of stimulus duration; (2) the temporal course of return to normal threshold following stimulation; (3) the relative fre quency region of maximum.threshold shift following pure tone stimulation; and (4) the shape of the curve of loudness (recruitment.) This experiment sought to throw light upon where, in the auditory system, adaptation occurs. By the tech nique of simultaneous binaural loudness balancing between one normal ear under going a threshold shift of a preceding adapting stimulus, it was possible to demon strate an accelerated growth of recruitment in the adapted ear. The intimate 29.