A. R. Livenson · 1968
This 1968 study measured how much microwave energy reflects off human skin versus being absorbed into body tissues. Researchers found that on average, 50% of microwave energy bounces off the body surface in medical frequency ranges (460-2375 MHz), though this varies significantly based on individual skin and fat thickness.
LOBANOVA EA · 1968
This 1968 Soviet study examined how periodic microwave exposure affects mice, focusing on standardizing exposure protocols for safety research. The researchers investigated reflex responses and radiation effects to help establish maximum permissible exposure levels. This represents early foundational work in microwave safety standards development.
A. R. Livenson · 1968
This 1968 study measured how much microwave energy reflects off the human body surface versus getting absorbed into tissues. Researchers found that about 50% of medical microwave energy (460-2375 MHz) bounces off the body, with the exact percentage varying based on individual body characteristics and frequency used.
Willard E. Caldwell, Frank Russo · 1968
This 1968 exploratory study examined how AC magnetic fields affect the behavior of Italian honey bees, motivated by concerns about how space travel might impact living organisms when removed from Earth's natural magnetic environment. The researchers developed experimental methods to test magnetic field effects on animal behavior, though specific findings aren't detailed in the available abstract.
Paul Leroy Hill, Jr. · 1968
This 1968 study developed specialized measurement techniques to accurately study how human skeletal muscle tissue responds to extremely low frequency electrical fields (down to 1.5 Hz). Researchers found that standard measurement methods were inadequate due to electrode interference, requiring four-electrode bridge systems for reliable results. The work established foundational methods for measuring biological tissue electrical properties at frequencies relevant to power lines and some medical devices.
Françoise M. L. Attinger · 1968
Researchers tested dog arterial walls under different strain conditions to understand how blood vessels behave mechanically. They found that arteries are anisotropic (behave differently in different directions) rather than uniform, with different elastic properties when stretched tangentially versus longitudinally. This challenges common assumptions used in vascular system modeling.
J. Pokorny, V. Jelinek · 1967
Researchers exposed mice with transplanted tumors to magnetic and electromagnetic fields of varying intensities. Certain field arrangements significantly slowed tumor growth and extended survival times in the treated animals. This 1967 study suggests specific EMF configurations may have therapeutic anti-cancer effects.
H. A. GEBBIE et al. · 1967
This 1967 technical study demonstrated the generation of continuous wave sub-millimeter radiation at 337 micrometers using a cyanide gas maser system. Researchers achieved approximately 50 milliwatts of usable power output from their experimental apparatus. This represents early work in developing coherent electromagnetic radiation sources in the sub-millimeter frequency range.
A. M. Kadoum, S. O. Nelson, L. E. Stetson · 1967
Researchers exposed yellow mealworm larvae to radiofrequency radiation and found that RF energy caused deadly internal heating in the insects. The thoracic region (chest area) reached the highest temperatures due to body appendages concentrating electric fields, with internal temperatures approaching lethal levels that likely caused the observed deaths.
Ahmed M. Kadoum, Harold J. Ball, LaVerne E. Stetson · 1967
Researchers exposed mealworm larvae to radiofrequency electric fields and found they lost weight progressively after treatment, with younger larvae losing more weight than older ones. The treated larvae also showed elevated oxygen consumption that persisted for days, similar to patterns seen in surgically injured larvae.
R. C. Sharma · 1967
This 1967 study by Sharma investigated how cells behave when exposed to alternating electric fields, focusing on the electrical properties of cell membranes and how they respond to changing electromagnetic conditions. The research examined the fundamental mechanisms behind cellular reactions to electric field exposure, laying groundwork for understanding how EMF affects living tissue at the cellular level.
Henry J. Suroviec · 1967
This 1967 study examined microwave radiation levels leaking from commercial microwave ovens used in restaurants, cafeterias, and vending areas. Researchers measured radiation intensities during normal operation to assess potential exposure risks for workers and customers in food-service establishments.
Kouwenhoven WB et al. · 1967
Johns Hopkins researchers conducted a 30-month medical study of 11 electrical linemen exposed to high-voltage 60-Hz power line fields during maintenance work. The study tracked physiological changes in workers using both conventional hot stick methods and barehanded techniques from aerial buckets connected to energized conductors. This represents one of the earliest comprehensive medical evaluations of occupational EMF exposure effects.
Chai SY, Vogelhut PO · 1967
Researchers used 9.36 GHz microwave radiation to study how water molecules bind to hemoglobin protein. They found that microwaves could detect changes in water structure around the protein, showing a linear relationship up to specific hydration levels. Above certain water concentrations, ice-like structures formed on the hemoglobin surface.
Zadradnik J W, Chen C S · 1967
This 1967 study developed a new laboratory method for predicting how many bacteria survive thermal heating processes. The researchers found that traditional prediction methods were flawed because they assumed simple kill rates and ignored how bacteria's pre-heating conditions affect their heat resistance. Their improved method accounts for these real-world variables.
Mishina IM · 1967
Soviet researchers in 1967 developed a calorimetric method to measure thermal effects from the Luch-58 ultrahigh frequency medical device. This study focused on quantifying heat generation in tissues exposed to microwave therapy equipment. The research represents early efforts to understand and measure the heating effects of medical microwave devices.
Chizhenkova RA · 1967
This 1967 Soviet research examined how rabbit brain tissue responds electrically to various electromagnetic field exposures, measuring changes in brain wave patterns (EEG). The study represents early scientific investigation into how EMF exposure affects neural activity in living animals. While specific findings aren't available, this research contributed to foundational understanding of electromagnetic field interactions with brain tissue.
G. G. Knickerbocker, W. B. Kouwenhoven, H. C. Barnes · 1967
Researchers exposed 22 male mice to intense 60 Hz electric fields (4 kV/inch) for nearly 1,500 hours over 10.5 months to test for health effects. The exposed mice showed no changes in health or reproduction, but their male offspring showed altered growth patterns. This early study examined power frequency fields at levels far exceeding typical household exposure.
D. A. Copson · 1967
This 1967 review examined microwave absorption in biological systems, covering wavelengths from 1 millimeter to 30 centimeters. The study focused on thermal effects like diathermy while acknowledging the growing need to understand biological hazards from microwave communications. It established early safety standards including a maximum exposure limit of 0.01 watts per square centimeter.
J. W. Zahradnik, C. R. Stumbo · 1967
This 1967 study developed a new method for predicting bacterial survival during heat treatment that doesn't rely on traditional assumptions about how bacteria die when heated. Researchers tested their approach using E. coli bacteria and found they could accurately predict survival rates in larger-scale equipment without needing to know the exact death rates of the organisms.
A. W. Guy, J. F. Lehmann · 1967
This 1967 conference paper examined how electromagnetic energy heats different human tissues, using thermographic imaging of tissue-equivalent models to measure temperature patterns. The research aimed to optimize medical diathermy treatments, improve implanted device power transfer, and establish safety limits for personnel exposed to powerful electromagnetic fields. This foundational work helped establish early understanding of how microwaves interact with human tissue.
R. A. CHIZHENKOVA · 1967
Soviet researchers exposed rabbits to magnetic fields and microwave radiation, then measured brain wave changes using EEG technology. They found that both constant magnetic fields (460 oersteds) and microwave frequencies caused distinct brain wave alterations, including increased 'spindles' and slow, high-amplitude waves. Even after surgically removing key brain structures, the electromagnetic effects persisted, suggesting direct brain stimulation rather than reflex responses.
Maroncelli M, Ferraro G · 1967
This 1967 study investigated a new physical therapy approach using electromagnetic fields (diathermy) to treat chronic simple otitis, a persistent ear infection condition. The research examined radiofrequency electromagnetic field therapy as a treatment method for patients with ongoing ear inflammation. This represents early medical research into therapeutic applications of EMF technology.
Goldblith, Samuel A. · 1967
This 1967 technical review examined how both ionizing radiation and microwave energy could be used to preserve foods like seafood, produce, and grains. Researchers found that relatively low doses of radiation (under 500,000 rad) combined with refrigeration could extend shelf life by destroying spoilage organisms while keeping food safe.
Samuel A. Goldblith, Daniel I. C. Wang · 1967
Researchers exposed E. coli bacteria and B. subtilis spores to 2,450 MHz microwave radiation and compared their death rates to conventional heating. They found that microwaves killed the microorganisms at exactly the same rate as regular heat at the same temperature. This suggests microwaves work purely through heating effects, not through any special electromagnetic properties.