oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Search Results: 1 - 10 of 13 matches for " Tafireyi Nemaura "
All listed articles are free for downloading (OA Articles)
Page 1 /13
Display every page Item
The Advection Diffusion-in-Secondary Saturation Movement Equation and Its Application to Concentration Gradient-Driven Saturation Kinetic Flow  [PDF]
Tafireyi Nemaura
Journal of Applied Mathematics and Physics (JAMP) , 2016, DOI: 10.4236/jamp.2016.411200
Abstract: This work describes the deterministic interaction of a diffusing particle of efavirenz through concentration gradient. Simulated pharmacokinetic data from patients on efavirenz are used. The Fourier’s Equation is used to infer on transfer of movement between solution particles. The work investigates diffusion using Fick’s analogy, but in a different variable space. Two important movement fluxes of a solution particle are derived an absorbing one identified as conductivity and a dispersing one identified as diffusivity. The Fourier’s Equation can be used to describe the process of gain/loss of movement in formation of a solution particle in an individual.
The Advection Wave-in-Secondary Saturation Movement Equation and Its Application to Concentration Tension-Driven Saturation Kinetic Flow  [PDF]
Tafireyi Nemaura
Journal of Applied Mathematics and Physics (JAMP) , 2016, DOI: 10.4236/jamp.2016.412210
Abstract: The deterministic description of a wave of solution particle of efavirenz is given. Simulated pharmacokinetic data points from patients on efavirenz are used. The one dimensional wave equation is used to infer on transfer of vibrations due to tension between solution particles. The work investigates movement using wave analogy, but in a different variable space. Two important movement fluxes of a wave are derived an attracting one identified as tension conductivity and a dispersing one identified as tension diffusivity. The Wave Equation can be used to describe another spin-off movement flux formed induced by vibrations in solution particle.
Modelling the Dynamical State of the Projected Primary and Secondary Intra-Solution-Particle Movement System of Efavirenz In-Vivo  [PDF]
Tafireyi Nemaura
International Journal of Modern Nonlinear Theory and Application (IJMNTA) , 2016, DOI: 10.4236/ijmnta.2016.54021
Abstract: This work seeks to describe intra-solution particle movement system. It makes use of data obtained from simulations of patients on efavirenz. A system of ordinary differential equations is used to model movement state at some particular concentration. The movement states’ description is found for the primary and secondary level. The primary system is found to be predominantly an unstable system while the secondary system is stable. This is derived from the state of dynamic eigenvalues associated with the system. The saturated solution-particle is projected to be stable both for the primary potential and secondary state. A volume conserving linear system has been suggested to describe the dynamical state of movement of a solution particle.
The Unified Description of a Solution-Particle  [PDF]
Tafireyi Nemaura
Journal of Applied Mathematics and Physics (JAMP) , 2017, DOI: 10.4236/jamp.2017.55086
Abstract: This work derives a unified description of a solution-particle using movement rate of component vibrations (strings). Projected Pharmacokinetic and Pharmacodynamic data from a patient on Efavirenz are used. Differential equations are used to formulate a system that governs a solution-particle field. A reconnaissance (frame) wave that envelops a solution-particle is derived. Its conductivity and diffusivity fluxes are found. The movement of the reconnaissance wave is found to be faster than diffusion and pilot waves. A solution-particle is accompanied by the three waves, diffusion, pilot and the frame and is active only at the boundary of space and time.
Stochastic Modelling of Solution Particle Movement: An Individual Case of Coupled Concentration Gradient Dependent and Independent Movements of Efavirenz  [PDF]
Tafireyi Nemaura
Journal of Applied Mathematics and Physics (JAMP) , 2017, DOI: 10.4236/jamp.2017.55090
Abstract: This work proposed a coupled model of diffusion. It adopted two forms of coupled movement, the interacting and non-interacting driven forms of movement of a solution particle of efavirenz concentration measured in blood plasma. Data from projected pharmacokinetics in a patient on efavirenz were used. A relationship between interacting and non-interacting diffusion was suggested through a stochastic differential equation. The solution particle with a small value of relative acceleration drift to its active neighbourhood was projected to have a corresponding high transport/interacting diffusion.
Biologia de Trichogramma pretiosum Riley em ovos de Sitotroga cerealella (Olivier)
ALENCAR, JOSé ADALBERTO DE;HAJI, FRANCISCA NEMAURA PEDROSA;OLIVEIRA, JOSé VARGAS DE;MOREIRA, ANDRéA NUNES;
Pesquisa Agropecuária Brasileira , 2000, DOI: 10.1590/S0100-204X2000000800021
Abstract: biological aspects of the parasitoid trichogramma pretiosum riley (hymenoptera: trichogrammatidae) were studied in eggs of its factitious host, sitotroga cerealella (olivier) (lepidoptera: gelechiidae), with the objective of obtaining basic information about the biology of this parasitoid under environmental lab conditions. there was no control of temperature, relative humidity and photoperiod with the purpose of simulating the natural conditions of the submédio s?o francisco region, pernambuco state, brazil. the mean temperature during the study was 25.9± 0.9°c. the results showed a mean duration of the period egg-adult of 9.42 days and a viability of parasited eggs of 88%. the mean number of t. pretiosum emerged by egg of the host was 1.41 with a maximum of two individuals/egg. the mean longevity of females was 5.53 days while the males lived an average of 3.08 days when both were fed with pure honey.
Visitantes florais de plantas invasoras de áreas com fruteiras irrigadas
Kiill, Lúcia Helena Piedade;Haji, Francisca Nemaura Pedrosa;Lima, Paulo César Fernandes;
Scientia Agricola , 2000, DOI: 10.1590/S0103-90162000000300034
Abstract: weeds can impair yield of irrigated fruit crops, studies about their ecology being needed, especially ways of reproduction and association with insects. this work was carried out in petrolina, pe, brazil with the objective of identifying the floral visitors of weeds, and classifying them as pollinators and pollen and/or nectar thieves, according to their behavior. the observations were made between may and october of 1998, in 26 not consecutive days, between 7:00 am and 4:00 pm. the weeds were classified in nectariferous and polliniferous when these were visited exclusively for collection of nectar or pollen, and mixed when these were visited to collect both. a grade system was adopted for the frequency evaluation: a- number of visits >30, b - between 10 to 30, c - <10. among the 24 weeds observed, 14 were classified as nectariferous, six as polliniferous and four were considered mixed. among the floral visitors, the following bees were registered (xylocopa grisescens, x. frontalis, centris aff. perforator, ptilotrix aff. plumata, diadasina riparia, apis mellifera, trigona spinipes, eulaema nigrita), butterflies (ascia monuste, papilio thoas brasiliensis, agraulis vanillae) and hummingbirds (phaethornis sp., chlorostilbon aureoventris). the bees were predominant in number of species (61.5%) as well as in the frequency of visits. they acted as pollinator agents in 83% of weeds visited. the butterflies were considered nectar thieves, and they acted as pollinator agents only in the case of the species of emilia. the hummingbirds acted as pollinators for all visited species.
Biologia de Trichogramma pretiosum Riley em ovos de Sitotroga cerealella (Olivier)
ALENCAR JOSé ADALBERTO DE,HAJI FRANCISCA NEMAURA PEDROSA,OLIVEIRA JOSé VARGAS DE,MOREIRA ANDRéA NUNES
Pesquisa Agropecuária Brasileira , 2000,
Abstract: Estudaram-se, em laboratório, aspectos biológicos de Trichogramma pretiosum Riley (Hymenoptera: Trichogrammatidae) em ovos do hospedeiro alternativo Sitotroga cerealella (Olivier) (Lepidoptera: Gelechiidae), visando à obten o de informa es básicas sobre a biologia desse parasitóide em condi es de laboratório. N o houve controle de temperatura, umidade relativa e fotoperíodo, com o objetivo de simular as condi es do Submédio do Vale do S o Francisco, Estado de Pernambuco. A temperatura média registrada durante o desenvolvimento do trabalho foi 25,9±0,9°C. Os resultados mostraram uma dura o média do período ovo-adulto de 9,42 dias e uma viabilidade de ovos parasitados de 88%. O número médio de T. pretiosum emergido por ovo do hospedeiro foi de 1,41, com um máximo de dois indivíduos/ovo. As fêmeas viveram, em média, 5,53 dias, enquanto os machos apresentaram longevidade média de 3,08 dias, quando ambos os sexos foram alimentados com mel puro.
Visitantes florais de plantas invasoras de áreas com fruteiras irrigadas
Kiill Lúcia Helena Piedade,Haji Francisca Nemaura Pedrosa,Lima Paulo César Fernandes
Scientia Agricola , 2000,
Abstract: As plantas invasoras afetam a produtividade das fruteiras irrigadas, sendo necessários estudos sobre sua ecologia, principalmente formas de reprodu o e associa o com insetos. O presente trabalho foi desenvolvido em Petrolina-PE, objetivando classificar os visitantes florais de plantas invasoras em polinizadores e pilhadores, de acordo com o comportamento apresentado. As observa es foram feitas de maio a outubro de 1998, em 26 dias n o consecutivos, no intervalo das 7h00 às 16h00. As invasoras foram classificadas em nectaríferas e poliníferas, quando visitadas para retirada exclusiva de néctar ou de pólen; e em mistas, quando visitadas para retirada dos dois recursos. Para a análise de freqüência foi adotado um sistema de notas: a- número de visitas >30, b- entre 10 e 30 e c- <10 visitas. Das 24 invasoras observadas, 14 foram consideradas nectaríferas, seis poliníferas e quatro mistas. Entre os visitantes florais foram registradas abelhas (Xylocopa grisescens, X. frontalis, Centris aff. perforator, Ptilotrix aff. plumata, Diadasina riparia, Apis mellifera, Trigona spinipes, Eulaema nigrita), borboletas (Ascia monuste, Papilio thoas brasiliensis, Agraulis vanillae) e beija-flores (Phaethornis sp., Chlorostilbon aureoventris). As abelhas apresentaram maior número de espécies (61,5%) e de visitas, além de agirem como polinizadores em 83% das invasoras visitadas. As borboletas foram consideradas pilhadores de néctar, participando como polinizadores de Emilia spp. e os beija-flores, considerados polinizadores das invasoras visitadas.
EFEITO DO CONTROLE CULTURAL E QUíMICO SOBRE O áCARO DA NECROSE DO COQUEIRO, EM COCO-AN?O IRRIGADO
ALENCAR, JOSé ADALBERTO DE;ALENCAR, POLIANNA CALINE GRANJA DE;HAJI, FRANCISCA NEMAURA PEDROSA;BARBOSA, FLáVIA RABELO;
Revista Brasileira de Fruticultura , 2001, DOI: 10.1590/S0100-29452001000300026
Abstract: one of the most harmful pests of coconut tree crop is the mite aceria guerreronis. this pest damage the coconut fruits in the first development stage, causing partial or total losses in fruit production. the objective of this work was to evaluate the effect of chemical products and crop management in the control of a. guerreronis, aiming to use them in a management program for this pest. the research was carried out in petrolina-pe from august to december, 1999. a complete randomized block design, with four treatments and four replications, was used. each replication consisted of two plants of green dwarf coconut tree variety. treatments were: a ? cleaned plants without chemical control; b ? cleaned plants with chemical control; c ? plants not cleaned and with chemical control; d ? plants not cleaned and without chemical control. all fruits damaged by mite were taken out from plants in the treatments with cleaned plants for three times. fenpyroxymate, tetradifon and adhesive, at the levels 200ml, 300ml and 15ml for 100 l water, respectively, were mixed and applied for three times. results showed that the individual uses of chemical products and crop management had efficiency of 26-87% and 64-89%, respectively, on mite control. however, the association of these two control managements showed a synergic effect on mite control with efficiency of 87-96%.
Page 1 /13
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.