Browsing by Author "Ali, M."
Now showing 1 - 3 of 3
Results Per Page
Sort Options
Item Co-application of triple super phosphate and chicken litter biochar improves phosphorus availability of mineral tropical acid soils to reduce water pollution(Desalination and Water Treatment, 2022) Ahmeda, O.H.; Ali, M.; Abdullah, R.; Chowdhury, A.J.K.; Salleh, N.T.; Musah, A.A.Although organic amendments could increase P use efficiency, unbalanced use of organic amendments and P fertilizers in farming systems is uneconomical and environmental unfriendly. This study explored if the right combination of chicken litter biochar (CLB) and triple superphosphate (TSP) could improve soil P availability to minimize P losses through leaching to prevent ground water and other water bodies’ contamination through for example eutrophication (Algae bloom). Rates of 75%, 50%, and 25% of 5 t ha–1 chicken litter biochar and 75%, 50%, and 25% of 130 kg ha–1 (existing TSP recommendation for Zea mays, L.), respectively were evaluated in a leaching study using standard procedures. Results revealed that CLB treatments minimized P leaching compared with the treatment without CLB. This resulted in significant improvement in available P. This was possible because CLB improved soil pH, P, K, Ca, Mg, and Na besides reducing P fixation by Al and Fe ions. Leaching of available P following application of chicken litter biochar only occurred within the first 10 d after which the leaching significantly reduced. This finding further suggests that if the availability P is not in synchrony with optimum crop uptake in agricultural systems, available P could be lost from the soil profile to contaminate or pollute water bodies. Chicken litter biochar can be used to improve P availability but it is not an excellent organic amendment to sorb P for a long period.Item An open dataset of Plasmodium falciparum genome variation in 7,000 worldwide samples(2021) MalariaGEN; Ahouidi, A.; Ali, M.; Almagro-Garcia, J.; Amambua-Ngwa, A.; Amaratunga, C.; Amato, R.; Amenga-Etego, L.; Andagalu, B.; Anderson, T.J.C.; Andrianaranjaka, V.; Apinjoh, T.; Ariani, C.; Ashley, E.A.; Auburn, S.; Awandare, G.A.; Ba, H.; Baraka, V.; Barry, A.E.; Bejon, P.; Bertin, G.I.; Boni, M.F.; Borrmann, S.; Bousema, T.; Branch, O.; Bull, P.C.; Busby, G.B.J.; Chookajorn, T.; Chotivanich, K.; Claessens, A.; Conway, D.; Craig, A.; D'Alessandro, U.; Dama, S.; Day, N.P.J.; Denis, B.; Diakite, M.; Djimdé, A.; Dolecek, C.; Dondorp, A.M.; Drakeley, C.; Drury, E.; Duffy, P.; Echeverry, D.F.; Egwang, T.G.; Erko, B.; Fairhurst, R.M.; Faiz, A.; Fanello, C.A.; Fukuda, M.M.; Gamboa, D.; Ghansah, A.; Golassa, L.; Goncalves, S.; Hamilton, W.L.; Harrison, G.L.A.; Hart, L.; Henrichs, C.; Hien, T.T.; Hill, C.A.; Hodgson, A.; Hubbart, C.; Imwong, M.; Ishengoma, D.S.; Jackson, S.A.; Jacob, C.G.; Jeffery, B.; Jeffreys, A.E.; Johnson, K.J.; Jyothi, D.; Kamaliddin, C.; Kamau, E.; Kekre, M.; Kluczynski, K.; Kochakarn, T.; Konaté, A.; Kwiatkowski, D.P.; Kyaw, M.P.; Lim, P.; Lon, C.; Loua, K.M.; Maïga-Ascofaré, O.; Malangone, C.; Manske, M.; Marfurt, J.; Marsh, K.; Mayxay, M.; Miles, A.; Miotto, O.; Mobegi, V.; Mokuolu, O.A.; Montgomery, J.; Mueller, I.; Newton, P.N.; Nguyen, T.; Nguyen, T.; Noedl, H.; Nosten, F.; Noviyanti, R.; Nzila, A.; Ochola-Oyier, L.I.; Ocholla, H.; Oduro, A.; Omedo, I.; Onyamboko, M.A.; Ouedraogo, J.; Oyebola, K.; Pearson, R.D.; Peshu, N.; Phyo, A.P.; Plowe, C.V.; Price, R.N.; Pukrittayakamee, S.; Randrianarivelojosia, M.; Rayner, J.C.; Ringwald, P.; Rockett, K.A.; Rowlands, K.; Ruiz, L.; Saunders, D.; Shayo, A.; Siba, P.; Simpson, V.J.; Stalker, J.; Su, X.; Sutherland, C.; Takala-Harrison, S.; Tavul, L.; Thathy, V.; Tshefu, A.; Verra, F.; Vinetz, J.; Wellems, T.E.; Wendler, J.; White, N.J.; Wright, I.; Yavo, W.; Ye, H.MalariaGEN is a data-sharing network that enables groups around the world to work together on the genomic epidemiology of malaria. Here we describe a new release of curated genome variation data on 7,000 Plasmodium falciparum samples from MalariaGEN partner studies in 28 malaria-endemic countries. High-quality genotype calls on 3 million single nucleotide polymorphisms (SNPs) and short indels were produced using a standardised analysis pipeline. Copy number variants associated with drug resistance and structural variants that cause failure of rapid diagnostic tests were also analysed. Almost all samples showed genetic evidence of resistance to at least one antimalarial drug, and some samples from Southeast Asia carried markers of resistance to six commonly-used drugs. Genes expressed during the mosquito stage of the parasite life-cycle are prominent among loci that show strong geographic differentiation. By continuing to enlarge this open data resource we aim to facilitate research into the evolutionary processes affecting malaria control and to accelerate development of the surveillance toolkit required for malaria elimination.Item Speciation of Inorganic Antimony in Polyethylene Terephthalate (Pet) Bottled Water Using Hydride Generation Atomic Absorption Spectrophotometry (HG-AAS)(University Of Ghana, 2015-07) Ali, M.; Carboo, D.; Kingsford-Adaboh, R.; University of Ghana, College of Basic and Applied Sciences, School of Physical and Mathematical Sciences, Department of ChemistryAntimony (Sb) is a regulated drinking water contaminant that has been found to leach from polyethylene terephthalate (PET) plastic containers into the waters stored in them. The common inorganic species of antimony in water are Sb(III) and Sb(V), with the former being more toxic and the latter being more soluble. In order to assess the extent to which waters stored in PET bottles are contaminated with inorganic Sb and to further examine the effect of typical storage conditions on migration rates, speciation analysis of inorganic Sb using hydride generation atomic absorption spectrophotometry (HG-AAS) was undertaken on selected PET plastic bottled waters marketed in the Greater Accra Region of Ghana. Six brands of PET plastic bottled waters were obtained at source on the day of packaging, and analyses undertaken on samples of the waters stored in the plastic containers at intervals of four weeks for twelve weeks, under three carefully chosen storage conditions distinctive of bottled water usage. Selected physicochemical properties of samples of the waters stored in the plastic containers and total Sb of samples of the plastic containers were also determined to discover the effect of some physical properties and certain major ions, and the influence of the different quality PET plastic types on Sb migration respectively. The study revealed amounts of total Sb in the PET plastic containers of the 6 brands ranging from 123.46 mg/kg to 146.45 mg/kg. The selected physicochemical properties of the waters stored in the PET plastic containers considered were pH (6.78 – 7.43), Ca2+ (1.61 – 12.39 mg/L), Mg2+ (1.00 – 4.96 mg/L), HCO3− (6.18 – 55.41 mg/L) and TDS (8.70 – 70.40 mg/L)). PET bottled waters of 5 out of the 6 brands contained Sb (initial total Sb ranging from 1.11 – 14.65 μg/L) before storage. Total Sb concentrations of the waters stored in the plastic containers were observed to increase with storage time under all the three storage conditions for all the brands of PET plastic bottled waters. Sb(III) and Sb(V) of the waters stored in the plastic containers were observed to increase with storage time, with the latter in higher amounts in solution under all the three storage conditions. Waters stored in plastic containers exposed to harsh conditions of the weather like high air temperatures (average temperature for 12 weeks: 23.0ºC in the morning and 39.5ºC in the afternoon) and sunlight outdoors registered the highest Sb concentrations. In conclusion, PET bottled waters marketed in the Greater Accra region were not found to be contaminated with Sb leaching from their packaging PET plastic containers within the one year limited time of expiry using WHO MCL. Notwithstanding that, harsh weather conditions outdoors is most likely to contribute to the rapid migration of the metalloid (Sb) from the plastic containers, making the bottled water unwholesome before its due expiry time is reached.