Electroreceptive bony fishes of Africa (the Mormyriformes) and South America (the Gymnotiformes) detect and communicate with conspecifics by their continuously discharging electric organs. Laboratory studies of members of each group are beginning to reveal the mechanisms of communicating with and finding mates, offering much scope for future studies of the ...

Examined how communicators send mixed messages containing an explicit surface content and a covert hidden content. In Study 1, Ss wrote constrained essays presenting either an introverted or extraverted personality. Although authors reported manipulating essay credibility and readers reported relying on credibility to make their judgments, readers succumbed to correspondence ...

The hazards of contact lenses used by workers have been addressed by many articles and warnings from safety experts for the past twenty years. An "accident" which occurred in Baltimore, MD, USA in 1967 with a welder set off a worldwide epidemic of rumours, coming in waves from the USA, ...

"This study is mainly intended to survey the ecological structure, particularly the dominance and integration [of economic development], of 20 super-large cities in China. Most of the statistics used in this study come from the China Statistical Yearbook (1984), according to which all the 20 cities have a population of ...

A study was made of the piezomagnetic and elastic properties of scrolls of Metglas 2605 SC, used as an acoustic transducer element. This study involved quasi-DC magnetic induction measurements and ultrasonic complex plane analysis of scrolls of various annealing histories. An optimum effective magnetomechanical coupling coefficient. K(eff), of 0.75, was ...

Ant colonies are organized in dense heterarchies: communication occurs among most or all members and includes feedback loops from lower to higher units of organization. Much of the regulation is based on mass communication, in which information is transmitted from group to group or group to individual rather than from ...

Previous studies had estimated that repeal of mandatory helmet wearing laws resulted in increases in the number of fatalities ranging from nearly 40% to essentially zero. This study was performed to determine more definitively the influence on motorcyclist fatalities of these repeals. After repeal, motorcyclist fatalities increased more in the ...

A prospective study was done on Indiana University freshman football players to determine if the incidence of lumbar spondylolysis and spondylolisthesis followed the pattern of previous studies. Using x-ray film evaluation, 145 freshman players were followed through their careers from 1978 to 1983. As in previous studies, a higher percentage ...

This study was undertaken to aid Blue Cross & Blue Shield of Alabama in determining an equitable dispensing fee and to examine profitability in the study pharmacies. A 25 percent random sample of community pharmacies (independent, chain, professional, and independent discount) in Alabama was studied, indicating an average breakeven cost ...

From the red alga POLYSIPHONIA LANOSA (L.) Tandy two new bromophenols, methylrhodomelol and rhodomelol were isolaed, and after acetylation and methylation their structure elucidated with the aid of spectroscopic methods and an X-ray crystallographic study.

Studies in which conditioned taste aversion was used as a non-lethal method to suppress coyote predation are reviewed in light of the controversy that surrounds such research. It is concluded that the negative results obtained to date may have been due to theoretical and methodological problems in the studies. Uncritical ...

Absorption problems may be regarded mainly as compound inherent characteristics and are to a certain degree predictable on the basis of physicochemical parameters of test compounds. Problems originating from interactions of the compound and/or its metabolites with biological structures or processes are system inherent problems and can only be recognized ...

An indole alkaloid isolated from the fruits of RHAZYA STRICTA Dec., has been identified as tetrahydroalstonine on the basis of spectroscopic studies and by comparison with the authentic sample.

Risk factors in a working environment are studied mainly by case control studies or cohort studies of workers in several occupational settings. While the cohort studies are by far more powerful in detecting risk factors there are many problems associated with these studies, apart from the high cost and long ...

Lymphocyte marker studies are routinely performed in a large number of laboratories. Reading the literature and answering daily requests from clinicians for such studies lead me to wonder whether the methodological problems, interpretation, and indications of these investigations are fully understood by everybody and whether the need for these costly ...

Mold plate studies were done simultaneously in two Southern California desert communities about thirty-five miles apart. The most common molds found were Alternaria, Cladosporium, Penicillium, Fusarium and Aspergillus. Alternaria was more common in the high desert (altitude 3500 feet and usually about 10 degrees F cooler) and Cladosporium in the ...

An outbreak of diarrhoea, dysentery, abortion and death among N'Dama cattle is reported. Eight animals involved were examined ante- and/or postmortem yielding salmonella belonging to three serotypes, S. visby, S. hadar and S. taksony. The need for further studies to elucidate the problem of salmonella abortion in cattle in Sierra ...

From the seeds of Cassia javanica chrysophanol, physcion, 1,5-dihydroxy 4,7-dimethoxy 2-methyl anthraquinone 3-O-alpha-L(-) rhamnopyranoside and 1,3,6,7,8-pentahydroxy-4-methoxy 2-methyl anthraquinone have been isolated. Chrysophanol and physcion are commonly occurring anthraquinones but 1,5-dihydroxy 4,7-dimethoxy 2-methyl anthraquinone 3-O-alpha-L(-) rhamnopyranoside and 1,3,6,7,8-pentahydroxy 4-methoxy 2-methyl anthraquinone have not been reported earlier; and in the present communication ...

1 The effect was studied of tolmesoxide (Rx71107), a tolmesoxide metabolite (Rx71112) and nifedipine on active tension in human isolated crural veins and in rat thoracic aorta. The effects of tolmesoxide and nifedipine on (22)Na and (45)Ca net influx in noradrenaline-induced contractions were investigated in rat thoracic aorta.2 Tolmesoxide, Rx71112 ...

A brief profile of Harrison Martland is not enough to judge the totality of his impact on American medicine. His scholarly study of the occupational exposure of the radium watch dial painters is a classic in epidemiological application of the tools of the pathologist to the study of a community ...

The present essay is intended to call attention to three problems or areas of investigation that are connected with the study of Egyptian mummies. In each instance a supply of evidence exists and more can probably be found; and in each area much could be learned from historical analysis of ...

A sensitive and specific assay for primaquine in plasma and urine using gas chromatography/mass spectrometry has been developed and used to study the plasma kinetics of primaquine. Preliminary studies on the effects of single and multiple oral doses have been carried out. In both cases the drug was completely, or ...

Current research in mathematics involves a wide variety of interlocking ideas, old and new. For example, results about the curves and surfaces defined by polynomial equations, as in algebraic geometry, appear in the study of solitary waves and also in the gauge theories in physics. Centuries-old problems in number theory ...

The problem of approximating a probability density function by a simpler one is considered from a decision theory viewpoint. Among the family of candidate approximating densities, we seek the one that is most difficult to discriminate from the original. This formulation leads naturaliy to the density at the smallest Bhattacharyya ...

The history of two lead-zinc (sulphide) reference ores is presented to show quantitatively the serious effects of ambient oxidation on unprotected samples. This study should serve as a warning to the users and producers of sulphide-bearing reference ores and concentrates. Suggestions are given for overcoming or diminishing the oxidation problem.

The infectious etiologic agents of gastroenteritis are manifold and have only recently been studied in greater depth. Part of the problem in studies pertaining to diarrhea is the difficulty in identifying fecal "pathogens" among an enormous number of indigenous fecal microorganisms. Finally, the recognition of the pathogenicity of enterotoxins has ...

The epidermis of pyogenic granulomata is presented with an unusual problem of distorted dermoepidermal relationships. In this study we have attempted to delineate the problem and have studied the way in which the epidermis copes with its difficulties. Sixteen pyogenic granulomata with (where possible) paralesional skin (and for comparison ten ...

An earlier study (Sølvberg & Blakar (1975)) testified to subtle differences in communication efficiency over different communication situations by parental couples with and without schizophrenic offspring. The present study is offered as a replication of this study, but whereas the participating couples in the original study were recruited from a ...

Ninety-seven subjects memorized nine associations among six interlocking elements that were presented as links among nonsense letters, connections among spies with word code names (after Hayes, 1966), or airline flights among major US cities. On tests of problem solving and true-false judgments, the letters group and the words group performed ...

This paper reviews the outcomes of follow-up studies of addicts in therapeutic communities. The aim is to assess the research problems in such studies and the range of recovery rates found. It was found that controlled studies are few in number and available only for correctional institutions, not for Daytop, ...

[This corrects the article on p. 931 in vol. 27.].

A slow in vivo uptake of cobalt from a growth medium resulted in an increase in density of mitochondria of Schizophyllum commune. Differential labeling of donor and resident mycelia, and subsequent analysis of resident mycelia surrounding donor implants, detected cobalt-dense mitochondria and demonstrated exchange of mitochondria after hyphal fusion. Transfer ...

A yellow fever epidemic broke out in Luanda, Angola, in January 1971 and was halted in less than 3 months by prompt mass vaccination and intensive antimosquito measures. Nine strains of yellow fever virus were isolated from hospitalized cases, but attempts to isolate the virus from Aedes aegypti mosquitos failed. ...

By using neutralization, complement fixation and immunogel-diffusion tests, it has been demonstrated that cross-reactions occur between various avian pox viruses and between sheep pox and goat pox viruses. No such reactions were demonstrated between avian pox viruses and vaccinia virus or between avian pox and sheep pox and goat pox ...

Thesis (M.S.)--University of Florida, 1998.

Thesis (M.A.)--Dept. of Communication Studies. University of Missouri--Kansas City, 2006.

Thesis (Ph. D.)--University of Wisconsin--Madison, 2003.

The presence of a high level of latent infection in an affected community was postulated as one of the conclusions of earlier studies undertaken during cholera epidemics. A small community, consisting of 59 persons, was investigated for 100 days to determine the prevalence and persistence of infection after the occurrence ...

The aim of this study was to compare the performance of a new one-piece closed ostomy bag, SenSura, to an already established bag with a focus on minimizing problems related to use of stoma bags for individuals with a colostomy. There were 68 Danish participants with a colostomy who tested ...

Cholera carrier studies in Calcutta during 1966-67 established the prevalence of carriers even in the absence of any overt disease. The carriers excreted V. cholerae intermittently and usually only for short periods. Some, however, excreted intermittently over a long period and thus continued to be potential sources of infection. Intensive ...

During surveillance for cholera in the community of Can-Itom (Negros Occidental, Philippines) in which the disease is endemic, a limited outbreak of cholera occurred. Although it was not possible to determine how the infection arose, the index case was detected and the spread of infection traced. The infection was found ...

Evidence has been presented that the burst size in the Group A and Group C streptococcal phage-host systems are in general similar producing approximately 13 phage particles per infected coccus. The exception was the C1 phage which produced 10 times more virus particles than all the other phages tested. The ...

Niederpruem, Donald J. (Indiana University Medical Center, Indianapolis), Hudner Hobbs, and Lyle Henry. Nutritional studies of development in Schizophyllum commune. J. Bacteriol. 88:1721-1729. 1964.-Individual carbon and nitrogen sources which sustain dikaryotic fruiting in the basidiomycete Schizophyllum commune were determined. Combination studies indicated that certain poor substrates were inhibitory; these included ...

A tentative proceedure for a study of urban transportation is outlined.

Relevant information regarding the numerous problems encountered in cholera immunity is dealt with in great detail in this study. Toxin production, bacterial virulence, serological reactions, and the antigenic structure of V. cholerae are discussed. Natural, passive, and active cholera immunity receives special attention, the authors describing the various means of ...

A "sarcosine oxidase" was prepared from a creatinine-decomposing strain of Pseudomonas aeruginosa. The enzyme is inactivated by drying, lyophilization, and dialysis against distilled water. No dialyzable cofactor was found. Optimal activity of the enzyme is reached at pH 7.8. Enzyme activity is directly proportional to enzyme concentration and also to ...