Research Journal of Pharmaceutical, Biological and Chemical Sciences Vol. 7(1) 2016

Coating of Urea Granules for Slow Release Fertilizer Using Bioblend Polystyrene / Polycaprolactone

Research journal of pharmaceutical, biological and chemical sciences

The ongoing pollution of water resources with a variety of lubricating oils, the insufficiently developed methods of purification of natural and waste water poses the problem of finding ways to restore the natural qualities of the environment. The authors see a solution to this problem in the wide use of activity of individual associations of oil-oxidizing microorganisms (OOM) in combination with the plant-derived sorbents (buckwheat, oat, wheat and barley husk), which allows deep controlled oxidation of these contaminants down to CO2 and H2O. It was found that the multi-species OOM communities take more active part in biodegradation of mineral, semi-synthetic and synthetic oils, than those with the limited species composition. The growth, development and activity in the oil biodegradation is determined by the nature of the contamination. The population growth maxima lie between 5 and 14 days, and decrease to 2 to 6 hours under the influence of sorbents

Quelques performances reproductives et taux de survie de deux souches du poisson-chat africain Clarias gariepinus (Burchell, 1822) et de leurs croisés à Koupa-Matapit

Des essais de croisements réciproques de deux souches [la souche sauvage (SS) et la souche domestique (SD)] du poisson-chat africain Clarias gariepinus, ont été effectués entre août et décembre 2005 à la station piscicole de Koupa-Matapit, à l\'Ouest-Cameroun. Les taux de fécondation et d\'éclosion ont été significativement plus élevés (P0,05), sauf chez le croisé SDXSS au J20 (P< 0,05). A certains stades de développement, les hétérosis de survie ont été positives. Les croisements intraspécifiques, et l\'élevage en hapas pourront ainsi contribuer à améliorer la production des juvéniles de C, gariepinus. Keywords: croisement intraspécifique, fécondation, éclosion, survie, hétérosis, Cameroun International Journal of Biological and Chemical Sciences Vol. 2 (4) 2008: pp. 469-47

Modeling of the Labour Force Redistribution in Investment Projects with Account of their Delay

The mathematical model of the labour force redistribution in investment projects is presented in the article. The redistribution mode of funds, labour force in particular, according to the equal risk approach applied to the loss of some assets due to delay in all the investment projects is provided in the model. The sample of the developed model for three investment projects with the specified labour force volumes and their defined unit costs at the particular moment is given

Visualizing the mobility and distribution of chlorophyll proteins in higher plant thylakoid membranes: effects of photoinhibition and protein phosphorylation

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Using geographic profiling to locate elusive nocturnal animals: A case study with spectral tarsiers

© 2015 The Zoological Society of London. Estimates of biodiversity, population size, population density and habitat use have important implications for management of both species and habitats, yet are based on census data that can be extremely difficult to collect. Traditional assessment techniques are often limited by time and money and by the difficulties of working in certain habitats, and species become more difficult to find as population size decreases. Particular difficulties arise when studying elusive species with cryptic behaviours. Here, we show how geographic profiling (GP) - a statistical tool originally developed in criminology to prioritize large lists of suspects in cases of serial crime - can be used to address these problems. We ask whether GP can be used to locate sleeping sites of spectral tarsiers Tarsius tarsier in Sulawesi, Southeast Asia, using as input the positions at which tarsier vocalizations were recorded in the field. This novel application of GP is potentially of value as tarsiers are cryptic and nocturnal and can easily be overlooked in habitat assessments (e.g. in dense rainforest). Our results show that GP provides a useful tool for locating sleeping sites of this species, and indeed analysis of a preliminary dataset during field work strongly suggested the presence of a sleeping tree at a previously unknown location; two sleeping trees were subsequently found within 5m of the predicted site. We believe that GP can be successfully applied to locating the nests, dens or roosts of elusive animals such as tarsiers, potentially improving estimates of population size with important implications for management of both species and habitats.We thank Operation Wallacea for supporting S.C.F. in thisproject and for providing logistical support for the fieldwork,and Aidan Kelsey for invaluable assistance in the field. Wethank the Indonesian Institute of Sciences (LIPI) andKementerian Riset dan Teknologi Republik Indonesia(RISTEK) for providing permission to undertake the work(RISTEK permit no. 211/SIP/FRP/SM/VI/2013, and BalaiKonservasi Sumber Daya Alam (BKSDA) for theirassistance

Nouveaux taxa de micro-algues dulçaquicoles pour le Burkina Faso (Afrique de l\'Ouest): I- Chlorophyta

L\'étude taxonimique des micro-algues échantillonnées dans le réservoir de Bagré (Burkina Faso, Afrique de l\'Ouest), a permis d\'inventorier et de décrire 70 nouveaux taxa (Chlorophyta), qui se répartissent dans 11 familles, 29 genres. Parmi les familles, les Desmidiaceae sont les plus abondantes avec 44,3% puis viennent les Oocystaceae (15,7 %), les Scenedesmaceae en égalité avec les Closteriaceae (11,4 %), les Dictyosphaeriaceae (4,3 %), les Chlorococcaceae qui sont en égalité avec les Radiococcaceae et Volvocaceae (2,9 %) et enfin les Hydrodictyaceae, les Gloeocystaceae et les Phacotaceae avec chacune 1,4 %. Ces nouveaux taxa ont été observés et décrits grâce à un microscope photonique. Avec 70 nouvelles espèces inventoriées pour le Burkina Faso, le réservoir de Bagré peut être considéré comme un milieu favorable au développement de certaines espèces de Chlorophyta. Keywords: Micro-algues, Chlorophyta, taxinomie, réservoir de Bagré, Burkina Faso International Journal of Biological and Chemical Sciences Vol. 2 (4) 2008: pp. 508-52