Two horses with discospondylitis are described with emphasis on the imaging modalities used and their contribution to the final diagnosis and outcome. Radiographic findings were vertebral endplate lysis with sclerosis in both horses, with additional vertebral subluxation and ventral spondylosis in one horse. Ultrasonographic findings included vertebral malalignment and obliteration of the intervertebral disc by spondylotic bone in one horse and irregular endplates, a widened disc space, a hypoechoic paravertebral abscess and hypoechoic, atrophic adjacent musculature with loss of linear fiber pattern in the other horse. Bone scintigraphy excluded additional affected sites. A systematic approach is recommended when performing an ultrasound examination of the spine.

Diseases of the abdomen of the cheetah (Acinonyx jubatus) include those affecting the liver, spleen, and urinary tract. The most common diseases of captive-bred cheetah are gastritis, gastric ulceration, glomerulosclerosis, and hepatic veno-occlusive disease, and are the most frequent causes of mortality in these animals. The purpose of this study was to describe the ultrasonographic anatomy of the normal liver, spleen, kidney, and urinary bladder of the anesthetized captive-bred cheetah. Twenty-one cheetahs were examined. Eight of the 21 animals had subclinical evidence of either gastritis or chronic renal disease. The ultrasonographic appearances of the liver, gall bladder, common bile duct, and spleen were evaluated and various measurements made. Statistical analyses of the measurements were performed on all the healthy and subclinically ill animals taking sex, age, mass, and anesthetic protocol into account. There were no significant differences in any parameters between the healthy and subclinically ill animals (P > 0.25) and data were combined for statistical analyses. The mean mass was 41.1kg ( +/- 8.8) and the mean age was 5.0 years (+/- 2.2). The mean thickness of the liver medial to the gall bladder was 67.0 mm (+/- 14.8) and the liver was within the left costal arch in 75% of animals, extended caudal to the right costal arch in 50% of animals for an average of 30 mm, and extended caudal to the sternum in 63% of animals for an average of 32.5 mm. The maximum mean hepatic vein diameter at the entrance to the caudal vena cava was 8.6 +/- 2.8 mm; the mean diameters of the portal vein at the hilus and that of the caudal vena cava as it entered the liver were 7.5 +/- 1.6 and 9.9 +/- 4.1 mm, respectively. The mean diameter of the caudal vena cava was significantly affected by the type of anesthetic used (P < 0.10). The mass of the animals was significant in explaining the variance in maximum portal vein diameters (P < 0.10). The mean maximum velocity of the hepatic vein flow at the entrance to the caudal vena cava was 25.3 +/- 2.8 cm/s (n=4), the hilar portal vein was 11.7 +/- 3.3 cm/s (n=7), and the caudal vena cava was 33.8 +/- 19.8 cm/s (n=5). The mean maximum gall bladder length and width, and the mean common bile duct diameters were 44.6 mm (+/- 10.4), 23.3 mm (+/- 5.0), and 8.1 mm (+/- 2.4), respectively. Age was significant in explaining the variance in gall bladder lengths (P<0.10). Urinary tract ultrasonography was performed only in animals that had normal urea and creatinine levels (n=13). Renal cortico-medullary distinction was present in all kidneys and a cortico-medullary rim sign was seen in 21 of 26 kidneys. Mean kidney length, height, and width was 63.9 +/- 5.7, 38.1 +/- 5.2, and 42.1 +/- 5 mm, respectively. The average resistivity index was 0.58 (n=5). Mean urinary bladder length, height, and width were 57.0, 19.2, and 34.9 mm, respectively.

The purpose of the article is to report on a project aimed at exploring the use of translanguaging as a strategy to support bi-/multilingual students in acquiring academic literacy in English while promoting the terminologisation of African languages through exploratory scientific talk. The topic is contextualised by juxtaposing multilingualism as a problem with multilingualism as a resource. This is followed by a discussion of translanguaging as an alternative to monolingual education. An overview is given of a number of empirical studies on translanguaging conducted in South Africa during the past 15 years. Subsequently, I discuss a research project that elicited students" opinions about translanguaging as a pedagogical strategy. Speakers of eight African languages, including Afrikaans, experienced cognitive and affective benefits. Despite some reservations, they also considered translanguaging to be a useful platform for creating technical terms in African languages, and were positive about future use.

Four horses were presented to the Onderstepoort Veterinary Academic Hospital with histories of facial asymmetry, nasal discharge or obstruction of normal nasal passage airflow. Radiographic examination of the maxillary sinuses of 2 cases revealed well circumscribed, unilateral, mineralised masses; the other 2 cases showed less mineralisation. The masses were accessed for further investigation by surgically created frontonasal bone flaps or trephination of the maxillary sinuses. Diagnosis of osteoma was confirmed histopathologically in 3 of the cases and of ossifying fibroma in the 4th. Two horses were euthanased directly after surgical intervention due to poor prognosis. Osteomas are by nature expansile tumours and follow the complex communication of the sinuses, and therefore are not all amenable to surgical removal. Osseous fibromas are large, solitary, expansile lesions that are rare in all species but reported most frequently in horses. They have an apparent predilection for the rostral mandible of the horse

The main objective of language teaching is to improve language proficiency with regard to reading, writing, speaking and listening. The dictionary is one of the aids that can be used to attain this goal. There are however a number of stumbling blocks in the way of optimal utilization of dictionaries. Poor reference skills and a lack of knowledge with regard to dictionary typology seem to be the most prominent among these. It is argued that reference skills could be developed by the teaching of reference strategies, preferably by integrating dictionary-using exercises with other language learning activities, and by structuring these exercises according to the stages of the actual reference process. Dictionary pedagogy should ideally be introduced in the L1 class during primary education, but students will definitely still benefit if dictionary skills are taught during the intermediary stages of second or foreign language learning. It is anticipated that students who have become convinced of the problem-solving potential dictionaries through personal experience will become independent learners who will continue using dictionaries even after the years of formal education.

BackgroundContrast induced nephrotoxicity (CIN) is a well described syndrome in humans undergoing contrast medium examinations. To date CIN has received minimal attention in the veterinary literature despite increasing use of contrast medium examinations in computed tomographic studies.MethodsThis prospective study evaluated the effect of 1290 mg/kg iohexol given intravenously to 5 normal beagle dogs in a divided dose at an interval of 6–8 weeks. Renal function was evaluated by means of scintigraphically determined glomerular filtration rate (GFR) and a variety of laboratory assays.ResultsOnly GFR showed a significant decrease (17%) after the second injection but not to a clinically or pathologically significant level.ConclusionsNo clinically significant effect of repeated contrast medium administration was determined in this limited study. However in dogs with reduced renal function the risk of CIN is likely to increase dramatically post contrast administration.

Gastroscopy with air insufflation was performed in 10 ponies, after which a transcutaneous ultrasound examination of the stomach and duodenum was performed immediately and at 1, 2, and 4 h postgastroscopy, and 24 h after feeding. Stomach measurements included the dorsoventral and craniocaudal dimensions, as well as the stomach depth from the skin surface and stomach wall thickness at the different time periods. Gastric wall folding was observed in one pony, becoming most distinct 2-4 h postgastroscopy. An undulating stomach wall was noted in eight other ponies postgastroscopy. These observations appeared to be a response to the deflation of the stomach as the insufflated air was released gradually. Gas was detected in the duodenum after the gastroscopy. The parameters measured were noted to be useful to evaluate the extent of stomach distension due to air or feed. The ultrasonographic appearance of the stomach can, therefore, be altered by gastroscopy and this should be borne in mind when examining horses with suspected gastric disease.

This article reports on a research project aimed at determining the scope and nature of differences in picture comprehension between literate and low-literate audiences in the context of HIV and AIDS. Structured interviews were held with 30 low-literate and 24 literate adult speakers of African languages. The responses were coded and analysed both qualitatively and quantitatively. Consistent with previous research, we found that purely analogical visuals pose relatively few interpretation problems across the literacy spectrum. Literate and low-literate respondents recognised human beings and familiar analogous objects equally successfully. The interpretation of abstract items was problematic for respondents at both literacy levels, but relatively more so for low-literate respondents. Purely symbolic or conventional abstract elements, such as speech and thought balloons, and purely mathematical symbols are difficult for low-literate individuals since they do not have any analogical residue that will trigger relevant meaning aspects of the visual. Metaphors are difficult when they require culture-specific knowledge. The results strongly suggest that designers should exploit the expressive power of the human body in constructing (abstract) meaning. All humans have comparable experiences with associated basic actions and bodily expressions. Therefore, facial expressions and body postures and positions are powerful in transferring complex messages. We advise that pictorial metaphors, art styles that distort objects, complex pictures with partially symbolic content, as well as abstract symbols borrowed from written language should be omitted where possible.Keywords: abstract meaning, analogical visuals, symbolic visuals, pictorial metaphor, picture comprehension Using visuals to promote HIV education for lowliterate1 audiencesEffective communication is essential for health promotion and disease prevention. People need to understand health information to apply it to their own behaviour. Davis, Crouch, Wills, Miller & Abdehou (1990) regard comprehension as the most important of the literacy skills used in healthcare. These authors found in their research in the United States that the average reading comprehension of public clinic patients was at the 6th-grade level, whereas most tested materials for patient-education required an 11th-to 14th-grade reading level. Forty percent of the public clinic patients tested were reading below a 5th-grade level and could be considered 'severely illiterate' (see Plimpton & Root, 1994).The situation in South Africa is comparable. Basic instructional materials on health issues (including HIV and AIDS) have a readability level of just below 60, which is equivalent to Grade 9 (Carstens & Snyman, 2003), while more than 70% of the South African population have only marginal reading skills: 30% are functionally illiterate and 40% have limited skills (Carstens, 2004; Project Literacy, 2004). A compounding factor is that, as a rule, 30-50% of low-literate patients read three to five years be...