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Search Results: 1 - 10 of 193840 matches for " Amber D. Moore "
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Water and Nitrogen Management Effects on Biomass Accumulation and Partitioning in Two Potato Cultivars  [PDF]
Ashok K. Alva, Helena Ren, Amber D. Moore
American Journal of Plant Sciences (AJPS) , 2012, DOI: 10.4236/ajps.2012.31019
Abstract: Biomass accumulation and partitioning into different plant parts is a dynamic process during the plant growing period, which is influenced by crop management and climate factors. Adequate knowledge of biomass partitioning is important to manage the crops to gain maximum partitioning of assimilates into plant parts of economic significance, i.e. tubers in potato. This study was conducted using two potato cultivars grown in a sandy soil with center pivot irrigation under full irrigation (FI; irrigation to replenish 100% of water loss by evapotranspiration [ET]) and deficit irrigation (DI; replenish only 80% ET) and two nitrogen(N) rates (pre-plant + in-seasonN rates of 56 + 112 or 168 + 336 kg/ha). Plant samples were taken on 22, 44, 66, and 98 days after seedling emergence (DAE). With high N rate, tuber biomass of ‘Umatilla Russet’ cultivar in relation to total plant biomass varied from 23% - 88% and 25% - 86% over 22 to 98 DAE for the FI and DI treatments, respectively. The corresponding partitioning ranges were 30% - 93% and 38% - 93% at the low N rate. With respect to the‘Ranger Russet’ cultivar, biomass partitioning to tubers ranged from 36% - 82% and 23% - 84% for the FI and DI, respectively, at the high N rate, and 29% - 87% and 39% - 95% at the low N rate. Overall, this study demonstrated that within the range of N rate and irrigation treatments the biomass portioning into tubers was largely similar in both cultivars.
Zimbabwean history: becoming complex
D Moore
African Sociological Review / Revue Africaine de Sociologie , 2009,
Abstract: Review of Brian Raftopoulos and Alois Mlambo, eds. Becoming Zimbabwe: A History from the Pre-Colonial Period to 2008 Harare and Johannesburg: Weaver and Jacana, 2009 pp. v-xxxiv, 260 ISBN: 978-1-77922-083-7
Homoplastic microinversions and the avian tree of life
Edward L Braun, Rebecca T Kimball, Kin-Lan Han, Naomi R Iuhasz-Velez, Amber J Bonilla, Jena L Chojnowski, Jordan V Smith, Rauri CK Bowie, Michael J Braun, Shannon J Hackett, John Harshman, Christopher J Huddleston, Ben D Marks, Kathleen J Miglia, William S Moore, Sushma Reddy, Frederick H Sheldon, Christopher C Witt, Tamaki Yuri
BMC Evolutionary Biology , 2011, DOI: 10.1186/1471-2148-11-141
Abstract: We surveyed non-coding sequence data from a recent avian phylogenetic study and found substantially more microinversions than expected based upon prior information about vertebrate inversion rates, although this is likely due to underestimation of these rates in previous studies. Most microinversions were lineage-specific or united well-accepted groups. However, some homoplastic microinversions were evident among the informative characters. Hemiplasy, which reflects differences between gene trees and the species tree, did not explain the observed homoplasy. Two specific loci were microinversion hotspots, with high numbers of inversions that included both the homoplastic as well as some overlapping microinversions. Neither stem-loop structures nor detectable sequence motifs were associated with microinversions in the hotspots.Microinversions can provide valuable phylogenetic information, although power analysis indicates that large amounts of sequence data will be necessary to identify enough inversions (and similar RGCs) to resolve short branches in the tree of life. Moreover, microinversions are not perfect characters and should be interpreted with caution, just as with any other character type. Independent of their use for phylogenetic analyses, microinversions are important because they have the potential to complicate alignment of non-coding sequences. Despite their low rate of accumulation, they have clearly contributed to genome evolution, suggesting that active identification of microinversions will prove useful in future phylogenomic studies.Reconstructing the evolutionary relationships among organisms and changes in their genomes are major goals of phylogenomics [1-3]. The characteristics of genomes that have been used to reconstruct evolutionary history reflect the multitude of changes that arise due to distinct mutational mechanisms and accumulate at a variety of rates (Figure 1). The most slowly accumulating changes, collectively designated rare genomic
Next-to-Leading Order Shear Viscosity in lambda phi^4 Theory
Moore, Guy D.
High Energy Physics - Phenomenology , 2007, DOI: 10.1103/PhysRevD.76.107702
Abstract: We show that the shear viscosity of lambda phi^4 theory is sensitive at next-to-leading order to soft physics, which gives rise to subleading corrections suppressed by only a half power of the coupling, eta = [3033.54 + 1548.3 m_{th}/T] N T^3]/[ (N+2)/3 lambda^2], with m^2_th=(N+2)/72 lambda T^2. The series appears to converge about as well (or badly) as the series for the pressure.
Introducing mods: A low-cost, low-tech tool for high-performance detection of tuberculosis and multidrug resistant tuberculosis
Caviedes L,Moore D
Indian Journal of Medical Microbiology , 2007,
Abstract:
Treatment of visceral leishmaniasis
Moore E,Lockwood D
Journal of Global Infectious Diseases , 2010,
Abstract: The available treatment options for visceral leishmaniasis (VL) have problems relating to efficacy, adverse effects and cost, making treatment a complex issue. We review the evidence relating to the different methods of treatment in relation to - efficacy and toxicity of the drugs in different areas of the world; ability to monitor side effects, length of treatment; ability of patients to pay for and stay safe during treatment, ability of the healthcare services to give intramuscular, intravenous or oral therapy; the sex and child-bearing potential of the patient and the immune status of the patient. The high mortality of untreated/ poorly treated VL infection makes the decisions paramount, but a unified and coordinated response by each area is likely to be more effective and informative to future policies than an ad hoc response. For patients in resource-rich countries, liposomal amphotericin B appears to be the optimal treatment. In South Asia, miltefosine is being used; the combination of single dose liposomal amphotericin B and short course miltefosine looks encouraging but has the problem of potential reproductive toxicities in females. In Africa, the evidence to switch from SSG is not yet compelling. The need to monitor and plan for evolving drug failure, secondary to leishmania parasite resistance, is paramount. With a few drugs the options may be limited; however, we await key ongoing trials in both Africa and India to explore the effects of combination treatment. If safe and reliable combinations are revealed by the ongoing studies, it is far from clear as to whether this will avoid leishmania parasite resistance. The development of new drugs to add to the armamentarium is paramount. Lessons can be learnt from the management of diseases such as tuberculosis and malaria in terms of planning the switch to combination treatment. As important as establishing the best choice for specific antileishmanial agent is ensuring treatment centers, which can best manage the problems encountered during treatment, specifically malnutrition, bleeding, intercurrent infections, drug side effects and detecting and treating underlying immunosuppression.
Fermion Fluctuation Determinant and Sphaleron Bound
Guy D. Moore
Physics , 1995, DOI: 10.1103/PhysRevD.53.5906
Abstract: We investigate analytically the fermionic fluctuation determinant at finite temperatures in the minimal standard model, including all operators up to dimension 6 and all contributions to the effective potential to all orders in the high $T$ expansion, to 1 loop. We apply the results to find corrections to the Sphaleron erasure rate in the broken phase. We conclude that the analytic treatment of fermions is very reliable and that there is a great deal of baryon erasure after the phase transition for any physical Higgs mass.
Motion of Chern-Simons Number at High Temperature Under a Chemical Potential
Guy D. Moore
Physics , 1996, DOI: 10.1016/S0550-3213(96)00445-2
Abstract: I investigate the evolution of finite temperature, classical Yang-Mills field equations under the influence of a chemical potential for Chern Simons number $N_{CS}$. The rate of $N_{CS}$ diffusion, $\Gamma_d$, and the linear response of $N_{CS}$ to a chemical potential, $\Gamma_\mu$, are both computed; the relation $\Gamma_d = 2 \Gamma_\mu$ is satisfied numerically and the results agree with the recent measurement of $\Gamma_d$ by Ambjorn and Krasnitz. The response of $N_{CS}$ under chemical potential remains linear at least to $\mu = 6 T$, which is impossible if there is a free energy barrier to the motion of $N_{CS}$. The possibility that the result depends on lattice artefacts via hard thermal loops is investigated by changing the lattice action and by examining elongated rectangular lattices; provided that the lattice is fine enough, the result is weakly if at all dependent on the specifics of the cutoff. I also compare SU(2) with SU(3) and find $\Gamma_{\rm SU(3)} \sim 7 (\alpha_s/\alpha_w)^4 \Gamma_{\rm SU(2)}$.
Curing O(a) Errors in 3-D Lattice SU(2) x U(1) Higgs Theory
Guy D. Moore
Physics , 1996, DOI: 10.1016/S0550-3213(97)00124-7
Abstract: We show how to make O(a) corrections in the bare parameters of 3-D lattice SU(2) times U(1) Higgs theory which remove O(a) errors in the match between the infrared behavior and the infrared behavior of the continuum theory. The corrections substantially improve the convergence of lattice data to a small a limit.
O(a) errors in 3-D SU(N) Higgs theories
Guy D. Moore
Physics , 1997, DOI: 10.1016/S0550-3213(98)00158-8
Abstract: We compute the matching conditions between lattice and continuum 3-D SU(N) Higgs theories, with both adjoint and fundamental scalars, at O(a), except for additive corrections to masses and Higgs field operator insertions.
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