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Search Results: 1 - 10 of 10730 matches for " Du NH "
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Effect of bromine and iodine in drinking water on production parameters of broilers
J du Toit, NH Casey
South African Journal of Animal Science , 2010,
Abstract: Levels of bromine (Br) in groundwater that exceeded guideline concentrations of 0.01 mg/L prompted the investigation of the effect Br and iodine (I) in drinking water on the production parameters of broilers. The research was done over a 42-day growth period, post-hatch, in which the trial design was: Control: 0 mg Br/L and 0 mg I/L; 1 mg Br/L and 0 mg I/L; 3 mg Br/L and 0 mg I/L; 0 mg Br/L and 0.7 mg I/L; 1 mg Br/L and 0.7 mg I/L; 3 mg Br/L and 0.7 mg I/L, by 3 replicates with 30 birds/replicate, using mixed Ross broiler chickens. Br and I were administered as NaBr and KI. Mortalities, water and feed intakes were recorded daily and live weight once a week. Average daily gains and feed conversion rations were calculated. Different treatments of Br, irrespective of I, decreased water and feed intake significantly. The interaction of Br and I had no significant effect on intake of water or feed. I had an effective ameliorating effect on Br. Bromine administered at 1 and 3 mg Br/L or at ingestion rates of 1.59 and 4.44 mg Br/day affected production parameters.
Bladder Calculus Following an Unusual Vesical Foreign Body
A Bello, GD Kalayi, HY Maitama, NH Mbibu, DU Kalba
Journal of Surgical Technique and Case Report , 2009,
Abstract: Bladder calculus following vesical foreign bodies is uncommon. The usual presentation is presence of lower urinary symptoms. Most of these foreign bodies are either left inadvertently after open bladder operations or migrate from adjacent structures. This is a case report of an unusual self inserted foreign body in a female presenting with bladder calculus and diverticulum. Self inserted foreign body, particularly in females, is one of the important causes of bladder stones. Foreign body in the bladder should be suspected in a female patient with chronic lower urinary tract symptoms even in the absence of trauma or intervention Key Words: Urinary Bladder, Calculus, Foreign body
Lyapunov Stability of Quasilinear Implicit Dynamic Equations on Time Scales
Du NH,Liem NC,Chyan CJ,Lin SW
Journal of Inequalities and Applications , 2011,
Abstract: This paper studies the stability of the solution for a class of quasilinear implicit dynamic equations on time scales of the form . We deal with an index concept to study the solvability and use Lyapunov functions as a tool to approach the stability problem.
Oestrogenic activity using a recombinant yeast screen assay (RCBA) in South African laboratory water sources
NH Aneck-Hahn, C de Jager, MS Bornman, D du Toit
Water SA , 2005,
Abstract: Many chemicals released into the environment are believed to disrupt normal endocrine functions in humans and animals. These endocrine disrupting chemicals (EDCs) affect reproductive health and development. A major group of EDCs that could be responsible for reproductive effects are those that mimic natural oestrogens, known as xeno-oestrogens. A number of in vivo and in vitro screening strategies are being developed to identify and classify xeno-oestrogens, in order to determine whether they pose a health risk to humans and animals. It is also important to be able to apply the assays to environmental samples for monitoring purposes. In South Africa information on the levels of EDCs in water is limited. While establishing the recombinant yeast screen bioassay (RCBA) using the yeast strain Sacchyromyces cerivisiae for oestrogenic activity, problems were experienced with contamination. Four South African laboratory water sources were assessed. From the results it was clear that the water used in the preparation of the medium for the assay was the source of oestrogenic contamination. Care should be taken to eliminate all possible sources of contamination in the test procedures to eliminate the reporting of false positive results. The fact that South African laboratory and surface waters tested positive for estrogenic activity has far reaching implications regarding reproductive and general health. Water SA Vol. 31 (2) 2005: pp.253-256
Erblichkeitssch?tzung für verschiedene metaboliten im blutserum von bullen
NH Fischer
Genetics Selection Evolution , 1976, DOI: 10.1186/1297-9686-8-2-296a
Health caregivers’ approach towards the rehabilitation of HIV and AIDS persons in uMhlathuze
EI Cobham, NH Ntombela
Inkanyiso: Journal of Humanities and Social Sciences , 2010,
Abstract: This study examined health caregivers’ approach to the rehabilitation of HIV and AIDS persons in uMhlathuze from a social work perspective. The study was a bid to know the efficacy of approaches used in rehabilitating HIV and AIDS persons. In generating data for the study, both qualitative and quantitative research methods, largely through survey by interview and questionnaire and content analysis by review of extant literature was applied. A sample of 50 respondents was purposively drawn from three health centres in the province of KwaZulu-Natal, South Africa, namely Ngwelezana Hospital, Richards Bay Clinic and eNseleni Community Health Centre, by the use of a questionnaire. The interview schedule was administered on 15 respondents in a face-to-face interview. They were also among the 50 respondents that participated in answering the questionnaire: 3 respondents from Richards Bay, 6 from eNseleni CHC and 6 from Ngwelezana Hospital. The study recommends that efforts be made towards the overhauling of equipment, facilities and skilled man-power, in the rehabilitation process.
Outreach programme: Consultant visits to rural hospitals
B Gaede, NH Mckerrow
Continuing Medical Education , 2011,
Short communication: Responses of Black Neck ostrich chicks to L-carnitine dietary supplementation during the pre-starter growth period
A Hajibabaei, NH Casey
South African Journal of Animal Science , 2012,
Abstract: The objective was to determine the growth responses of Black Neck ostrich chicks to different dietary levels of L-carnitine in pre-starter diets. Thirty-two day-old ostrich chicks were randomly divided into four treatments with four replicates, each containing two chicks. All birds received the same basal diet supplemented with 0 (T0, control), 125 (T125), 250 (T250) or 600 (T600) mg L-carnitine per kg. Responses were monitored over three growth phases, 0 - 15, 16 - 30 and 31 - 60 days, the total period being 60 days. T600 had the lowest live weight (LW) and live weight gain (LWG) over the 60-day treatment period. Live weight and LWG values of T125 and T250 did not differ from those of T0. T600 had the worst feed conversion ratio (FCR) during the different stages (0 - 15, 16 - 30 and 31 - 60 days) and over the total 60-day period. Feed intake (FI) was reduced significantly in the T125 and T600 treatments compared to T0 and T250 treatments over the total period. The treatment, T125, showed the lowest FI and FCR responses over the total period, whereas there was no difference between T0 and T250. The results suggest that supplementing the pre-starter diet with 125 mg/kg of L-carnitine can improve the performance of ostrich chicks by decreasing the FCR. In contrast, the suppressive effect of a high inclusion level (T600) might indicate that ostrich chicks are sensitive to a high level of inclusion that could cause adverse effects.
Oviposition and egg quality traits of dwarf and naked neck layers
A Garces, NH Casey
South African Journal of Animal Science , 2003,
Abstract: Oviposition and egg quality traits were studied in dwarf and naked neck layers in Maputo (Mozambique) during a 28-d period at 35 weeks of age. Birds were caged individually in a laying house with natural light and ventilation. Average daylight length during the study was 11.2 hr and minimum and maximum temperature was 19.6 °C and 30.1 °C, respectively. The main results show that the sex-linked dwarfing gene (dw) increased the mean interval and time of oviposition, and reduced the sequence length and rate of lay. A bimodal distribution of oviposition intervals was observed in the dwarf population. No meaningful effect of the naked neck (Na) gene could be seen on oviposition traits. The dw gene also reduced the egg and components weight as well as the height of the albumen. The Na gene was associated with increased yolk weight and reduced albumen height.
Current concepts in the management of anterior urethral strictures
IA Mungadi, NH Mbibu
Nigerian Journal of Surgical Research , 2006,
Abstract: Objectives: This review paper presents the current trends in the evaluation and treatment of anterior urethral strictures. Stricture disease is recorded as one of the oldest afflictions of mankind and even in the millennium; it is the one disease associated with rapid turn over in treatment options and continuous evolution of new options. The stricture is still a significant burden on the urologist workload right from initiation of treatment and follows up. It may be associated with significant morbidity and deteriorating quality of life and may be frustrating to treat. Current trends are to discover a long lasting satisfactory treatment suitable in most cases ‘the gold standard’. Methods A review of current concepts in anatomy and the patho-physiologic mechanisms of the anterior stricture has been done. A structured literature search through a MEDLINE search was performed. New urethral substitutes have been compared to other techniques of urethroplasty as seen over the. last decade. Expert surgical consensus and opinion have been reviewed. Results The anterior urethral stricture is a consequence of major peri-urethral fibrosis and may be very complex if the inflammation is complicated or prolonged. It can be satisfactorily assessed by routine retrograde urethrography and endoscopic assessment for type and complexity. The urethral ultrasound appears to provide more information about the extent of fibrosis and the length of strictures. In review of recent experience, it has proven to be accurate convenient and a cheap complement to already established studies. Oral mucosa, rectal mucosa, bladder mucosa , dermal grafts, tunica vaginalis, tissue culture and synthetic polymers have all been applied over the last decade in the search for the suitable urethral substitute. The bucccal mucosa is outstanding among several options in the repair of the diseased anterior urethra as popularized by Barbagli. It appears to provide the solution for most situations in the anterior urethral stricture.. Conclusions: The Bucccal mucosal graft(BMG) may as well be the new ‘gold standard' in the management of anterior urethral stricture .
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