Effects of different sources of water on water hyacinth growth performance

(11 page document

Supersymmetric Quantum Mechanics, Engineered Hierarchies of Integrable Potentials, and the Generalised Laguerre Polynomials

Within the context of Supersymmetric Quantum Mechanics and its related hierarchies of integrable quantum Hamiltonians and potentials, a general programme is outlined and applied to its first two simplest illustrations. Going beyond the usual restriction of shape invariance for intertwined potentials, it is suggested to require a similar relation for Hamiltonians in the hierarchy separated by an arbitrary number of levels, N. By requiring further that these two Hamiltonians be in fact identical up to an overall shift in energy, a periodic structure is installed in the hierarchy of quantum systems which should allow for its solution. Specific classes of orthogonal polynomials characteristic of such periodic hierarchies are thereby generated, while the methods of Supersymmetric Quantum Mechanics then lead to generalised Rodrigues formulae and recursion relations for such polynomials. The approach also offers the practical prospect of quantum modelling through the engineering of quantum potentials from experimental energy spectra. In this paper these ideas are presented and solved explicitly for the cases N=1 and N=2. The latter case is related to the generalised Laguerre polynomials, for which indeed new results are thereby obtained. At the same time new classes of integrable quantum potentials which generalise that of the harmonic oscillator and which are characterised by two arbitrary energy gaps are identified, for which a complete solution is achieved algebraically.Comment: 1+19 page

Some soil nutrient composition favouring the growth of Typha grass in Kebbi and Katsina States, Nigeria

This study was carried out by surveying all the water bodies of two states where Typha grass exists. Soil auger was used to take soil samples randomly from five different locations in both Kebbi and Katsina state at the depths of 0-5cm, 510cm, 10 15cm. Soil nutrient was analyzed for the mineral composition of the two States at different season and soil depths. The result showed that, soil depth between 5-10cm has the highest percentage of nitrogen, phosphorus, calcium and magnesium during dry season. The nutrient composition of soil from the two states followed the same pattern during wet season

Impact of seasonal variation on population of weevils (Neochetina spp)

The impact of seasonal variation on population of weevils (Neochetina Spp), commonly used as water hyacinth bio-control agent was carried out in the National Institute for Freshwater Fisheries Research water-hyacinth insect laboratory. The experiment was conducted between May 2006 and April, 2007. Ten plastic containers of 50cm depth, 60cm diameter and 20-litre capacity each filled with 16- litters of water and 20 bunches of water hyacinth were used for the experiment. Ten weevils made up of five male and five female were introduced into each of the plastics container. The weevils were monitored daily, their numbers recorded. The result showed that, during wet season (May to October) the population of weevils increased, while it decreased during the dry season (November to April). Data analysis showed that, there was significant difference between wet season and dry season (P<0.05)

Kajian Pencahayaan Alami pada Bangunan Villa Isola Bandung

Villa Isola is one of the relics of the colonial era buildings that function has changed from a resting into an office building Rektorat UPI Bandung. By changing the function of the office of Rector, the quality of natural lighting in the Villa Isola required to meet the activity going on inside the building. Studies of natural lighting in buildings Villa Isola aims to determine how much influence the openings on the quality of natural lighting. The selection is based on the object of study for the design of Villa Isola has a lot of openings in the facade so interesting to study the extent to which the building utilizes natural light into the room. Natural lighting is influenced by several variables: the design window openings, the shape and depth of space, visual comfort, and external factors. The method used in this study is the descriptive research method both qualitatively and quantitatively. From the analysis, the conclusion is obtained form the design and orientation of the window openings in the Villa Isola does not meet the quality standards of natural lighting

Performance of Typha australis cut at three different heights

The response of Typha australis to stem cut at three different heights was studied for four weeks. This was carried out in the field between August and September 2003. Matured Typha australis naturally occuring along the stream within the Institute Integrated Fish Pond Complex, New Bussa were randomly selected. The shoots were cut at 10cm, 20cm, and 30cm, above the soil level. The responses of the plant were assessed. Plant cut at 10cm showed re-growth for one week and later died, while those cut at 20cm and 30cm showed re-growth through out the period of experiment. Result showed previous height between 10cm and 20cm is significant (P>0.05) between 10cm and 30cm height re-growth rates. But plant cut at 20cm and 30cm showed no significant (P>0.05), in height. The results show the susceptibility of Typha australis to stem cut at 10cm or below. Typha australis cut at 10cm above soil level are not likely to surviva

Les Occlusions Intestinales Par Nœud Ileo-Sigmoïdien : Aspects Diagnostiques, Thérapeutiques Et Pronostiques

Introduction: Ileosigmoid knot (ISK), also known as compound volvulus or double volvulus, is a rare disease and affects mostly male subjects in their fourth decade. Delayed diagnosis often leads to complications with a high incidence of digestive necrosis. Materials and methods: This was a 10-year retrospective, descriptive and analytical study from 1 January 2007 to 31 December 2016, which covered all patients operated emergently for ISK in the surgical and surgical specialty departments at the Niamey National Hospital (NNH). Results: The series involved 8 cases of ISK, representing 0.82% of intestinal obstructions. There were 7 men and 1 woman. The average age of patients was 44.33 years with extremes ranging from 25 to 60 years. The main clinical signs were: abdominal pain (100%), inability to pass gas and stool (100%), vomiting (87.5%) and abdominal meteorism (87.5%). Four patients (50%) had a clear obstructive syndrome and the other 4 patients (50%) had associated signs of peritoneal irritation. Paraclinical diagnosis was difficult because of atypical clinico-radiological signs, but in all cases an abdominal x-ray was performed and showed a double loop of dilated sigmoid shadow in 87.5% of the cases. Laparotomy was the first approach used in all patients and led to a 50% necrosis rate. Hartmann’s colectomy and ideal colectomy were used in identical proportions, with 50% each. Ideal colectomy was characterized by a morbidity rate of 50% and a mortality rate of 25% compared to 0% for Hartmann’s procedure. The overall morbidity was 25% and the overall mortality was 12.5%. The average hospital stay was 65.87 days (range 17 to 128 days). The average time before reestablishment of digestive continuity was 50.37 days (range 31-128 days). Conclusion: Ileosigmoid knot is a rare condition at Niamey national hospital where the diagnostic approach is similar to that of occlusions in general, but remains difficult due to its uncommonness and atypical clinico-radiological signs. Necrosis rates and postoperative complications remain high

The meanings of cancer and perceptions of cancer services among South Asians in Luton, UK

Recent research has suggested that there is limited awareness of and information about cancer and cancer services among South Asian communities. This study explores the meanings of cancer and perceptions of cancer services among South Asians living in Luton. Six single-sex focus groups were conducted among the three main South Asian groups in Luton: (1) Punjabi-speaking Muslims originating from Pakistan (Pakistani Punjabi); (2) Sylheti-speaking Muslims originating from Bangladesh (Bangladeshi Sylheti); and (3) Punjabi-speaking Sikhs originating from the Indian Punjab (Indian Punjabi). Overall, it was found that the information relating to cancer for South Asian communities was limited. Participants in the study expressed a keen desire for this information to be made available via their community social networks. This lack of information resulted in low levels of awareness about cancer and related issues. Cancer was often perceived as an incurable disease, a reflection of the fact that access to appropriate services had been experienced at a relatively late stage of the illness. Informed education, therefore, is clearly essential to influence how people manage cancer and access cancer services. This paper describes the challenges that service providers and users face in ensuring effective and informed awareness

Pharmacokinetics of single low dose primaquine in Ugandan and Congolese children with falciparum malaria

Background: There are no pharmacokinetic data of single low dose primaquine (SLDPQ) as transmission blocking in African children with acute Plasmodium falciparum and glucose-6-phosphate dehydrogenase deficiency (G6PDd). Methods: Primaquine pharmacokinetics of age-dosed SLDPQ (shown previously to be gametocytocidal with similar tolerability as placebo) were characterised in falciparum-infected Ugandan and Congolese children aged 6 months to 11 years, treated on admission with standard 3-day dihydroartemisinin-piperaquine or artemether-lumefantrine plus SLDPQ: 6 m–<1 y: 1.25 mg, 1–5 y: 2.5 mg, 6–9 y: 5 mg, 10–11 y: 7.5 mg. LC-MS/MS-measured plasma primaquine and carboxyprimaquine (baseline, 1, 1.5, 2, 4, 8, 12, 24 h) were analysed by noncompartmental analysis. Multivariable linear regression modelled associations between covariates, including cytochrome-P450 2D6 metaboliser status, and outcomes. Findings: 258 children (median age 5 [interquartile range (IQR) 3–7]) were sampled; 8 (3.1%) with early vomiting were excluded. Primaquine doses of 0.10–0.40 (median 0.21, IQR 0.16–0.25) mg base/kg resulted in primaquine maximum plasma concentrations (Cmax) of 2.3–447 (median 103.0, IQR 72.1–140.0) ng/mL between 1.0 and 8.0 (median 2) hours (Tmax) and median areas under the drug concentration curves (AUC0-last) 730.2 (6 m–<1 y, n = 12), 582.8 (1–5 y, n = 126), 871.1 (6–9 y, n = 80), and 931.0 (10–11 y, n = 32) ng∗h/mL. Median elimination half-live (T½) was 4.7 (IQR 3.8–5.6) hours. Primaquine clearance/kg peaked at 18 months, plateauing at 4 y. Increasing CYP2D6 metaboliser activity score [poor (3/250), intermediate (52/250), normal (150/250), ultrarapid (5/250), indeterminate (40/250)] and baseline haemoglobin were significantly associated with a lower primaquine AUC0-last,which increased with increasing mg/kg dose and age but was independent of the artemisinin treatment used. Interpretation: Age-dosed SLDPQ resulted in variable primaquine exposure that depended on bodyweight-adjusted dose, age, baseline haemoglobin and CYP2D6 metaboliser status, but not on dihydroartemisinin-piperaquine or artemether-lumefantrine. These data support age-dosed SLDPQ for transmission blocking in sub-Saharan Africa. Funding: This work was cofunded by the UK Medical Research Council, Wellcome Trust, and UK Aid through the Global Health Trials (grant reference MR/P006973/1). The funders had no role in the study design, execution, and analysis and decisions regarding publication

Socio-economic life of the Chinese Community

The discourse related to the socio-economic life of the Chinese community in Belitung Regency is certainly interesting to study. Moreover, there are quite a lot of ethnic Chinese in Belitung Regency. Therefore, the researcher feels that this research is important to do to see more about the socio-economic life of the Chinese community there. The type of this research is field research using a descriptive analysis approach. Researchers collect data by means of interviews, observation, and documentation. The results of this study can be understood that the existence of ethnic Chinese greatly influences the socio-economic life in Belitung Regency. In social life they can mingle and interact well with indigenous peoples. In terms of economic life, their existence is able to influence the economic sector of the local communit