A note on dual giant gravitons in AdS4×CP3AdS_{4}\times \mathbb{CP}^{3}

We study some of the properties of dual giant gravitons - D2-branes wrapped on an $S^{2}\subset AdS_{4}$ - in type IIA string theory on $AdS_{4}\times \mathbb{CP}^{3}$. In particular we confirm that the spectrum of small fluctuations about the giant is both real and independent of the size of the graviton. We also extend previously developed techniques for attaching open strings to giants to this D2-brane giant and focus on two particular limits of the resulting string sigma model: In the pp-wave limit we quantize the string and compute the spectrum of bosonic excitations while in the semiclassical limit, we read off the fast string Polyakov action and comment on the comparison to the Landau-Lifshitz action for the dual open spin chain.Comment: v3 significantly changed: added coupling to RR 1-form and turned on worldvolume gauge field, computed gauge field fluctuation, added comments on closure of the sl(2) sector and re-written to improve clarity. This version published in JHE

Oxford afrikaans–eng-els/english–afrikaans skoolwoordeboek/school dictionary.

Phillip Louw (Senior Redakteur/Senior Editor). Oxford Afrikaans–Eng-els/English–Afrikaans Skoolwoordeboek/School Dictionary. 2007, xii + 578 pp. ISBN 978 0 19 578742 9. Kaapstad/Cape Town: Oxford University Press Southern Africa (Pty) Ltd. Prys/Price: R99.95

SASPEN Case Study

Prenatally, the patient was diagnosed with dilated intestinal loops. The patient, born at term, was diagnosed with gastroschisis during the neonatal term

Is longpunksie-aspirasie 'n onskuldige prosedure?

Diagnostic lung punctures were done with parental consent in 29 previously untreated children aged 2 months to 9 years (median age 16 months), with radiologically proved broncho- or lobar pneumonia. Radiological examination was repeated after the procedure. Positive bacteriological cultures were obtained in 5 cases (17,2%): H. influenzae (2), a-haemolytic streptococci (2), and D. pneumoniae (1). Six patients (20,7%) developed overt pneumothorax and 1 had haemoptysis. All 7 patients recovered completely. Pneumothorax occurred in 5 of the 6 patients during the first 19 aspirations carried out by 6 different operators, while no local anaesthesia was used. The subsequent 11 punctures, among which only one case of pneumothorax occurred, were done by one person only after infiltration of the site with local anaesthetic. The incidence of pneumothorax seems to relate to the experience and skill of the operator, possibly to the use of local anaesthetic, and most important, whether identified by means of routine radiological examination after the procedure. Lung puncture does not appear to be an invariably innocuous procedure and should probably be reserved for special cases where uncommon aetiological agents are anticipated, for instance intractable pneumonitis accompanying immunodeficiency disease, the use of immunosuppressives, or with malignancy.S. Afr. Med. J. 48, 597 (1974)

Massive abdominal wall defect: an exercise in patience and preparation

Thankfully managing the patient with a large abdominal wall defect is a rare scenario for most surgeons. This type of situation may manifest as a result of trauma, infection or various other insults. We present a case of large abdominal wall tissue loss resulting from necrotising infection as a complication of Caesarean section. As this case highlights, patience and careful planning are the key ingredients to a successful outcome. Methods used to reconstruct this patient's abdominal wall combined temporary closure strategies, hernia repair methods and simple plastic surgical techniques to achieve a functional and cosmetically satisfactory result

Strategic Marketing Insights For Small Business Meat Retailers

Branded meat of consistently high quality has earned a reputation worldwide as a means to increase beef consumption. The feedlot industry is the main beef producer in South Africa and falls in the category of ‘Small Businesses.’ For these small business meat retailers to be successful in an industry subjected to fierce competition, it is necessary to be innovative in a market where high quality beef serves as just another commodity. This study explored the marketing efforts of meat producers in Middelburg, Mpumalanga, by drawing tangent planes between effective marketing and the knowledgeable consumer. The research approach that was used included both quantitative and qualitative research. The population consisted of consumers buying meat products at three different retailers in Middelburg, Mpumalanga. A sample of 612 was conveniently selected for the study. A total of 588 questionnaires were completed. The results of the study provide insights into the measures that influence brand equity for branded meat products. The importance to establish a link between brand variables and consumers’ perception regarding the importance of these variables is thus critical in the success of branded meat products. These marketing insights make a significant contribution to the competitive marketing strategies of small business meat retailers

Occupational exposure to bloodborne viruses amongst medical practitioners in Bloemfontein, South Africa

Background The possibility of occupational exposure to bloodborne viruses such as HIV, hepatitis B virus (HBV) and hepatitis C virus (HCV) is an everyday reality to health care workers. This study reports on doctors' extent and outcome of exposure to bloodborne viruses in Bloemfontein. Methods A descriptive study was done. Doctors (n=441) actively involved in public and/or private medical practice were requested to anonymously complete a questionnaire regarding occupational exposure to bloodborne viruses (HIV, HBV, and HCV). Results A response rate of 51.7% was obtained. More than half (54.2%, 95% CI [ 47.7% ; 60.5% ]) of respondents were exposed to bloodborne viruses; 48.3% occurring with HIV positive patients and 4.3% with known HBV positive patients, and no positive HCV patients. After exposure occurred, 68.9% of patients were tested for HIV, 10.9% for HBV and only 4.2% for HCV infection. The frequency of serological testing for doctors immediately after exposure was 65.3% for HIV, 21.7% for HBV and 8.2% for HCV. No seroconversion to HIV or HCV was reported, while two seroconversions to HBV were reported. Most exposures occurred as a result of needle stick injury (85%) and occurred in the operating theatre during procedures 59.3%. The majority (59.8%) of exposed doctors did not take any prophylactic treatment and those who did, did not always complete the treatment Conclusions The risk of seroconversion to HIV after occupational exposure was as expected, while seroconversion to HBV was less than expected. The lack of adequate follow up serological testing after occupational exposure is alarming. It is the responsibility of the occupationally exposed doctor to adequately comply with prophylactic measures and undergo serological testing to ensure the least possible risk of contracting infection from a bloodborne virus. South African Family Practice Vol. 49 (3) 2007: pp. 1