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Search Results: 1 - 10 of 63 matches for " Annet Namayanja "
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Genotypic Variation for Tolerance to Low Soil Phosphorous in Common Bean under Controlled Screen House Conditions  [PDF]
Annet Namayanja, Johnson Semoka, Robin Buruchara, Susan Nchimbi, Moses Waswa
Agricultural Sciences (AS) , 2014, DOI: 10.4236/as.2014.54030

Production of common bean (Phaseolus vulgaris) is often limited by the low availability of soil phosphorus (P). Identification of common bean genotypes adapted to low phosphorus (P) availability may be a feasible strategy to overcome the poor plant growth and production in P-deficient soils. Genetic variation for P response of thirteen common bean genotypes was studied under screen house controlled conditions using triple super phosphate as P source. The common bean genotypes varied in leaf area, shoot mass, root mass, total root length, basal and lateral roots production, shoot P concentration and P uptake under phosphorous deficiency and high phosphorous. All the measured variables were significantly correlated with each other, which in turn were correlated to P uptake. Generally the large-seeded genotypes RWR 1946 and RWR 2075 appeared to have the best growth, hence superior P efficiency under low P availability, while at the same time they were more responsive to added P. These results complement the earlier field based observed tolerance to low soil phosphorous of the selected genotypes under the BILFA strategy.

Improving long-term outcome of major depression in primary care: the role of recurrence prevention
Annet Smit
International Journal of Integrated Care , 2007,
Semigroup approach to diffusion and transport problems on networks
Jacek Banasiak,Aleksandra Falkiewicz,Proscovia Namayanja
Mathematics , 2015,
Abstract: Models describing transport and diffusion processes occurring along the edges of a graph and interlinked by its vertices have been recently receiving a considerable attention. In this paper we generalize such models and consider a network of transport or diffusion operators defined on one dimensional domains and connected through boundary conditions linking the end-points of these domains in an arbitrary way (not necessarily as the edges of a graph are connected). We prove the existence of $C_0$-semigroups solving such problems and provide conditions fully characterizing when they are positive.
Asymptotic state lumping in transport and diffusion problems on networks
Jacek Banasiak,Aleksandra Falkiewicz,Proscovia Namayanja
Mathematics , 2015,
Abstract: One of the aims of systems biology is to build multiple layered and multiple scale models of living systems which can efficiently describe phenomena occurring at various level of resolution. Such models should consist of layers of various microsystems interconnected by a network of pathways, to form a macrosystem in a consistent way; that is, the observable characteristics of the macrosystem should be, at least asymptotically, derivable by aggregation of the appropriate features of the microsystems forming it, and from the properties of the network. In this paper we consider a general macromodel describing a population consisting of several interacting with each other subgroups, with the rules of interactions given by a system of ordinary differential equations, and we construct two different micromodels whose aggregated dynamics is approximately the same as that of the original macromodel. The micromodels offer a more detailed description of the original macromodel's dynamics by considering an internal structure of each subgroup. Here, each subgroup is represented by an edge of a graph with diffusion or transport occurring along it, while the interactions between the edges are described by interface conditions at the nodes joining them. We prove that with an appropriate scaling of such models, roughly speaking, with fast diffusion or transport combined with slow exchange at the nodes, the solutions of the micromodels are close to the solution to the macromodel.
Root and Canal Morphology of Maxillary First Premolar Teeth in a Ugandan Population  [PDF]
Charles Mugisha Rwenyonyi, Annet Kutesa, Louis Muwazi, William Buwembo
Open Journal of Stomatology (OJST) , 2011, DOI: 10.4236/ojst.2011.11002
Abstract: Aim : To determine the variations in the root and canal morphology of the maxillary first premolar teeth in a Ugandan population. Methodology : Extracted maxillary first premolar teeth (n = 202) were evaluated in this study. The specimens had their pulp chambers de-roofed. They were decalcified in nitric acid and made transparent with methyl salicylate. Indian ink was injected into the root canals to display their configuration. Results : One hundred and forty eight (73.3%) of the specimens had two roots, of which 16.9% (n = 25) had fused roots. About 26.7% (n = 54) of the specimens were single rooted. Eleven (20.4%) of the single rooted specimens had one canal of either Vertucci type I, III, V or VII configuration while 79.6% (n = 43) of the specimens had two canals of either Vertucci type II, IV or VI configuration. The two-rooted specimens exhibited Vertucci type IV and VIII canal configuration: 96.6% and 3.4%, respectively. The single rooted teeth had a higher prevalence of lateral canals, canal intercommunications and multiple apical foramina as compared to the two-rooted specimens. Conclusion : The maxillary first premolar teeth in this Ugandan population showed a higher prevalence of two-root morphology with majority of the roots having Vertucci type IV canal configuration. There was no three-root anomaly recorded in the present material.
Jak2 Tyrosine Kinase: A Potential Therapeutic Target for AT1 Receptor Mediated Cardiovascular Disease
Annet Kirabo,Peter P. Sayeski
Pharmaceuticals , 2010, DOI: 10.3390/ph3113478
Abstract: Patients with hypertension often manifest a dysregulated renin-angiotensin-aldosterone system (RAAS). Most of the available treatment approaches for hypertension are targeted towards the RAAS including direct renin inhibition, ACE inhibition, angiotensin II type 1 receptor (AT 1-R) blockade, and aldosterone receptor antagonism. The Jak2 signaling pathway is intricately coupled to the AT 1-R signaling processes involved in hypertension. Here, we review the involvement of Jak2 in the pathogenesis of hypertension, and its potential as a therapeutic target for treatment of AT 1-R mediated cardiovascular disease. Jak2 may provide a rational therapeutic approach for patients whose blood pressure is not controlled by standard therapies.
The Challenges E-Commerce Poses to the Determination of a Taxable Presence: The “Permanent Establishment” Concept Analyzed from a South African Perspective
Annet Wanyana Oguttu,Sebo Tladi
Journal of International Commercial Law and Technology , 2009,
Abstract: It is a principle of international tax law that a country may not tax the business profits of a non-resident enterprise unless those profits are attributed to a “permanent establishment” located in the source country. A “permanent establishment” is defined as a fixed place of business through which the enterprise is wholly or partly carried on. The “business establishment” concept is however based on the world where there had to be a physical presence of the business in order for its profits to be taxed. The requirement of a fixed place of business faces challenges when trade is conducted electronically as e-commerce makes it difficult to identifying a taxable presence in the source country. This article analyses the challenges that e-commerce poses to the “permanent establishment” concept.
Improving long-term outcome of depression in primary care: a review of RCTs with psychological and supportive interventions
Smit,Annet; Tiemens,Bea G.; Ormel,Johan;
The European Journal of Psychiatry , 2007, DOI: 10.4321/S0213-61632007000100005
Abstract: background and objectives: depression is often a recurrent or persistent disorder. since the majority of depressed patients are treated in primary care, it is clear that to improve long-term outcomes more effective treatments in this setting are needed. the goal of this study was to review the strategies used for improvement of routine treatment in terms of their effects on patient outcome. methods: we conducted a systematic literature search to identify improvement strategies tested in randomized controlled trials in primary care, reporting at least six months effects on depression course and outcome. results: four strategies were identified: (1) training primary care physicians (pcps) - this appears ineffective (2) supporting pcps by other professionals - this produces better short term outcomes but does not prevent recurrence (3) organisational quality improvement - this shows improved outcomes at 6 months, and there is some evidence of longer term effectiveness; and (4) recurrence - and chronicity prevention strategies - these have not been shown to be effective. conclusion: since effects of the reviewed strategies generally do not seem to persist over time and no clear superiority over usual care has been demonstrated, we conclude that for improving long-term outcome of depression in primary care new directions or even a novel paradigm is needed.
Pattern of dental caries in Mulago Dental School clinic, Uganda
Annet Kutesa, Andrew Mwanika, Margaret Wandera
African Health Sciences , 2005,
Abstract: Information on dental caries among patients attending Mulago Hospital is scarce. Yet knowledge of the pattern of caries can be used to plan preventive and treatment interventions. This study describes the pattern of dental caries (in terms of age group, tooth and tooth surface and gender) among patients attending the Public Health Dental Officers School Clinic, Mulago Hospital. Methodology: A review of patients' treatment records for the period 1995 to 1999 was done. A total of 1800 cards were reviewed for the diagnosis of dental caries, age, gender and the data was analyzed using EPI INFO 6 program. The patients were from both urban and peri-urban settings and were aged between 10–90 years. Results: The results showed that the most frequently affected tooth surface was the occlusal (68.8%) followed by the interproximal (24%) and the least affected was the lingual/palatal (1.5%). The second molars were found to be the most affected of all teeth, with tooth 37(12%), 47(11%), 17(9.5%) and 27 (9.1%). The distribution of caries was higher in the lower than the upper jaw. There was a slight difference in sex predilection with females having 54.5% and males 45.5% of the lesions and the age group most affected was 20-29 years. Conclusion: The results showed a high occurrence of occlusal surface caries in molars especially the second molars in the 20-29 age group in the patients attending the Public Health Dental Officers School Clinic, Mulago Hospital.
Effect of the ferrule on fracture resistance of teeth restored with prefabricted posts and composite cores
annet Kutesa-Mutebi, Yusuf I Osman
African Health Sciences , 2004,
Abstract: Background: The ferrule effect in root treated teeth requiring cast posts and cores has been shown to greatly improve fracture resistance. Studies have also shown that in the case of a cast post and core, the longer the ferrule, the greater the fracture resistance. However few studies have considered the effect of different ferrule designs on prefabricated post and composite core systems. Aim: This study investigated the effect of different ferrule designs on the fracture resistance of teeth incorporating prefabricated posts and composite cores. It also assessed the necessity of a post in the restoration of endodontically treated teeth. Methodology: Sixty-two extracted maxillary incisors (centrals and laterals) and canines were randomly assigned into three groups and restored. Two groups had a prefabricated post and composite core with varying ferrule designs. A third group had a core with composite packed into the root canal but no post. An Instron universal testing machine was used to apply compressive loads until failure occurred. Results: There was no significant difference amongst the three groups as regards fracture resistance. The two groups with prefabricated posts and composite core required a mean force of 931N, std ±283 and 931N, Std ±242 to fracture. The third with no post group required a mean force of 1036N, std ±269 to fracture. Conclusion: In the restoration of an anterior endodontically treated tooth with a prefabricated post and composite core and where there is at least 2 mm or more of remaining coronal dentine, a ferrule may not be necessary. Key Words: endodontically treated teeth, fracture resistance, preformed post, composite core, ferrule design, ferrule effect, ferrule length, shoulder, bevel, contra-bevel African Health Sciences Vol.4(2) 2004: 131-135
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