Your search
Results 393 resources
-
Spontaneous and evoked activity of neurons in the inferior colliculus of guinea pigs was recorded before and after exposure to noise (continuous or intermittent white noise, 115 dB SPL for 30 min). A single unit was investigated in each animal, and its activity was monitored for several hours. Exposure to noise elevated the threshold of the tip of the tuning curve, resulting in a broadening of the tuning curve. Threshold elevation at the characteristic frequency was greater after exposure to...
-
Changes in the cochlear microphonics (CM), auditory nerve action potential (AP), and evoked responses from the inferior colliculus (IC-ER) and auditory cortex (AC-ER) of the guinea pig were assessed after exposure to white noise of 115 dB for 30 min. Both continuous and intermittent (200 ms noise and 200 ms pause) exposures were used. In comparison with the pre-exposure level, CM isopotential curves were shifted by 1.1 ±0.5 dB (x̄ ± S.E.) on the average in the range of 0.5–8 kHz (recorded at...
-
Public health planners in Egypt have launched a campaign to teach mothers how to save the lives of their children by treating diarrhea with oral rehydration therapy. Timely replacement of body fluids and salts can prevent the death of diarrhea victims. Egypt needs an estimated 5 million packets of salt and sugar annually to save the children. Each packet costs less than 10 cents. The prescribed drink comprises 3.5 gm of sodium chloride (table salt), 2.5 gm of bicarbonate (baking soda), 1.5...
-
A review of 150 patients with urethral strictures treated over a period of seven years at the University of Nigeria Teaching Hospital, Enugu, showed that 83 per cent of the patients were treated with a form of bouginage. Recurrence rate among this group was 65 per cent as opposed to 44 per cent among the group treated with urethroplasty. About 40 per cent of the patients obtained good to excellent results, 26 per cent rather poor results, and the rest achieved fair results. Even though...
-
A pilot survey of the factors affecting infant feeding practices in rural Western Nigeria highlights intercultural perceptual problems. Results show widespread use of imported, high cost carbohydrate foods and great resistance to the early introduction of local health protective items. It is commonly thought that "too much food" is bad for a child. Staff responsible for health education are held in a degree of disrepute not conducive to the acceptance of their educational efforts in the...
-
Summary The 80-item Eysenck Personality Questionnaire was given to 248 University students at Cairo University in order to study the factorial structure of this scale in Egypt. Principal factor analysis and varimax rotations of the 80 items and total scores of Psychoticism, Extraversion and Neuroticism yielded 10 factors, out of which eight are meaningful. These are: cultural responses, neuroticism, psychoticism, extraversion, physical complaints, paranoid hostility, adjustment, and manifest...
-
Primary education for an independent Namibia : planning in a situation of uncertainty and instability
-
In 1973, a sero-epidemiological survey was undertaken to investigate the prevalence of malaria along the Senegal river valley. More than 75 % of school children had antimalarial antibodies in their sera. This prevalence was independent of age and sex, and was found to be effectively high particularly in the regions of Gorgol and Guidimaka. These results may be considered exclusively as an indication to raise up, nevertheless, a general planning of malaria protection along the Senegal river.
-
A 17-item questionnaire was designed to elicit information on knowledge and practices of breastfeeding and time of introducing formula to infants among the professional nursing personnel of the University of Ife Teaching Hospitals Complex in Ile-Ife Nigeria. 155 questionnaires were distributed between January and May 1981. Female teachers were included to compare their responses with the nurses and to determine the most influential person in their decision to breastfeed. 80 questionnaires...
-
Abstract The severely pyramidical, academic and competitive nature of formal school education in Kenya has encouraged unrealistic and inappropriate student aspirations and expectations. Reorientation of these attitudes in the light of development priorities and the reality of the job and education markets is a major task confronting the country at present. This paper examines the current situation, summarising a recent research survey, and discusses prospects for future progress. The realism...