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Search Results: 1 - 10 of 120 matches for " DW Odee "
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Analysis of genetic structure in Melia volkensii (Gurke.) populations using random amplified polymorphic DNA
MS Runo, GM Muluvi, DW Odee
African Journal of Biotechnology , 2004,
Abstract: Melia volkensii (Gurke.) is a popular fast growing agroforestry tree species in the East Africa's arid and semi arid lands (ASALs). The species is valued for its high quality termite resistant timber. In addition, its fruits are eaten by livestock thus making it the species of choice by small-scale farmers. However, the species has been overexploited and information on its existing gene pool is currently lacking. The present work was therefore carried out using random amplified polymorphic DNA (RAPD) markers to assess genetic diversity within and between populations in order to suggest appropriate conservation and management strategies. Eight RAPD primers generated 38 scorable polymorphic bands which were used to estimate genetic distances between populations and for construction of neighbour-joining phenograms. Analysis of Molecular Variance (AMOVA) indicated significant genetic differentiation between populations in the eastern and the coastal regions with 21.1%, (P < 0.0002) of the total variation attributed to differences between these regions. There was a clear split between populations from Eastern and Coastal populations of Kenya. These differences may be due to ecogeographical association with genetic variation and should be conserved to retain the full breadth of genetic variation of the species. Key Words: Melia volkensii, random amplified polymorphic DNA, genetic variation, agroforestry species. African Journal of Biotechnology Vol.3(8) 2004: 421-425
The effect of intercropping Sclerocarya birrea (A. Rich.) Hochst., millet and corn in the presence of arbuscular mycorrhizal fungi
BO Muok, A Matsumura, T Ishii, DW Odee
African Journal of Biotechnology , 2009,
Abstract: Sclerocarya birrea (A. Rich.) Hochst. (marula) is native to Africa occurring in the semi-arid, deciduous savannas of much of sub-Saharan Africa. It has multiple uses, including the fruits, kernels, oil, bark, wood and leaves which make it a key species to support the development of rural enterprises. Enhancing positive interactions between marula and other crops is key to successful introduction of marula into the farming systems in the arid and semiarid areas of Africa. The objective of the study was to determine the influence of various combinations of marula, Pennisetum glaucum (L.) R. Br. (millet) and Zea mays (corn) with one another when inoculated with arbuscular mycorrhizal (AM) fungi. A threechambered acrylic root boxes were used. One outer chamber contained seedlings of S. birrea while the other contained millet or corn or bare soil. The central chamber was either inoculated with an AM fungus (Gigaspora margarita Baker and Hall) or uninoculated. Inoculation in the presence of the two crops enhanced both biomass production and height growth of marula seedlings. Both hyphal density and number of spores in marula compartments were increased under intercropping system compared to marula monoculture. The study demonstrated that intercropping marula with millet or corn could help in the propagation of AM fungi spores in the soil which would enhance marula establishment especially in soil with low phosphorous and moisture scarcity.
Analysis of genetic diversity in Eucalyptus grandis (Hill ex Maiden) seed sources using inter simple sequence repeats (ISSR) molecular markers
DO Okun, EU Kenya, PO Oballa, DW Odee, GM Muluvi
African Journal of Biotechnology , 2008,
Abstract: Eucalyptus grandis is an economically important tree species that is native to the Australian continent and its northern neighbours, where it is grown primarily for its hard wood timber and pulp for paper industries. It is widely grown in tropical countries such as South Africa, Kenya, Angola, Ghana, and Zimbabwe. Five ISSR primers generated 41 scorable polymorphic bands which were used to analyse genetic diversity between and within the seed sources and for construction of neighbour-joining phenogram. Mean Genetic Diversity per each primer loci based on Nei (1987) statistics indicated significant genetic variation between seed sources with 26.4%, (Gst = 0.264) of the total variation attributed to differences between seed sources. The variation between populations could be due to ecological, geographical association and gene flow rates and hence they should be conserved to retain the full breadth of genetic variation of the species. Thus, ISSR-PCR technology is a reliable, rapid (high throughput) and cost effective marker system that can be used to study genetic variation and genetic relationships among E. grandis seed sources.
Sustained treatment effect in attention-deficit/hyperactivity disorder: focus on long-term placebo-controlled randomized maintenance withdrawal and open-label studies
Goodman DW
Therapeutics and Clinical Risk Management , 2013, DOI: http://dx.doi.org/10.2147/TCRM.S30762
Abstract: stained treatment effect in attention-deficit/hyperactivity disorder: focus on long-term placebo-controlled randomized maintenance withdrawal and open-label studies Review (19) Total Article Views Authors: Goodman DW Published Date March 2013 Volume 2013:9 Pages 121 - 130 DOI: http://dx.doi.org/10.2147/TCRM.S30762 Received: 30 November 2012 Accepted: 05 February 2013 Published: 21 March 2013 David W Goodman Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA Abstract: Attention-deficit/hyperactivity disorder (ADHD) is a neurodevelopmental disorder that often persists throughout life. Approximately two-thirds of patients with a childhood diagnosis of ADHD continue to experience clinically significant symptoms into adulthood. Nevertheless, most of these individuals consider themselves “well,” and a vast majority discontinue medication treatment during adolescence. As evidence concerning the adult presentation of ADHD becomes more widely accepted, increasing numbers of physicians and patients will face decisions about the benefits and risks of continuing ADHD treatment. The risks associated with psychostimulant pharmacotherapy, including abuse, dependence, and cardiovascular events, are well understood. Multiple clinical trials demonstrate the efficacy of psychostimulants in controlling ADHD symptoms in the short term. Recent investigations using randomized withdrawal designs now provide evidence of a clinically significant benefit with continued long-term ADHD pharmacotherapy and provide insight into the negative consequences associated with discontinuation. Because many patients lack insight regarding their ADHD symptoms and impairments, they may place a low value on maintaining treatment. Nevertheless, for patients who choose to discontinue treatment, physicians can remain a source of support and schedule follow-up appointments to reassess patient status. Medication discontinuation can be used as an opportunity to help patients recognize their most impairing symptoms, learn and implement behavioral strategies to cope with ADHD symptoms, and understand when additional supportive resources and the resumption of medication management may be necessary.
The boy and his microscope: Interpreting section 56(1) of the National Health Act
DW Jordaan
South African Journal of Bioethics and Law , 2009,
Abstract: This article discusses the classic conflict between freedom and propriety with reference to the use of human gametes (sperm and egg cells) in South African law. The core question addressed is whether it is legal to use one’s own gametes, or others’ with their consent, for non-medical, non-sexual-intercourse purposes. This question is answered divergently by the two possible interpretations of the relevant statutory law – section 56(1) of the National Health Act – which is ambivalent. Since these two possible interpretations are representative of the two poles of the freedom v. propriety dichotomy, this matter can be perceived as a test of the depth of the South African juristic commitment to the principle of freedom. Section 56(1) is analysed, using the applicable common law presumptions as well as human rights. To illustrate the practical implications of these analyses, a hypothetical case study of a boy who studies human spermatozoa under his microscope at home is outlined and used throughout the article. The analyses conclude that the interpretation must be followed that answers the core question in the affirmative (in favour of freedom), namely that it is indeed legal to use one’s own gametes, or others’ with their consent, for non-medical, non-sexual-intercourse purposes.
Interpreting the gospel of Matthew in light of current global realities: A response
DW Ulrich
HTS Theological Studies/Teologiese Studies , 2009,
Abstract: This article consists of a response to fi ve papers presented by John Y.H. Yieh (Virginia Theological Seminary), Andries van Aarde (University of Pretoria), Dorothy Jean Weaver (Eastern Mennonite Seminary), Laura Anderson (Graduate Theological Union, Berkeley), and Lidija Novakovic (Baylor University, Waco), presented at the Matthew Section of the Society of Biblical Literature, held in Boston (Massachusetts), 21–25 November 2008. This response focuses on three questions: How can awareness of diverse perspectives or global realities enhance readers’ understandings of the Gospel of Matthew? In what ways might the Gospel of Matthew address global problems such as poverty, injustice and violence? To what extent do readers need a hermeneutics of suspicion in order to interpret Matthew responsibly in light of current global realities?
Sustained treatment effect in attention-deficit/hyperactivity disorder: focus on long-term placebo-controlled randomized maintenance withdrawal and open-label studies
Goodman DW
Therapeutics and Clinical Risk Management , 2013,
Abstract: David W GoodmanDepartment of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USAAbstract: Attention-deficit/hyperactivity disorder (ADHD) is a neurodevelopmental disorder that often persists throughout life. Approximately two-thirds of patients with a childhood diagnosis of ADHD continue to experience clinically significant symptoms into adulthood. Nevertheless, most of these individuals consider themselves “well,” and a vast majority discontinue medication treatment during adolescence. As evidence concerning the adult presentation of ADHD becomes more widely accepted, increasing numbers of physicians and patients will face decisions about the benefits and risks of continuing ADHD treatment. The risks associated with psychostimulant pharmacotherapy, including abuse, dependence, and cardiovascular events, are well understood. Multiple clinical trials demonstrate the efficacy of psychostimulants in controlling ADHD symptoms in the short term. Recent investigations using randomized withdrawal designs now provide evidence of a clinically significant benefit with continued long-term ADHD pharmacotherapy and provide insight into the negative consequences associated with discontinuation. Because many patients lack insight regarding their ADHD symptoms and impairments, they may place a low value on maintaining treatment. Nevertheless, for patients who choose to discontinue treatment, physicians can remain a source of support and schedule follow-up appointments to reassess patient status. Medication discontinuation can be used as an opportunity to help patients recognize their most impairing symptoms, learn and implement behavioral strategies to cope with ADHD symptoms, and understand when additional supportive resources and the resumption of medication management may be necessary.Keywords: psychostimulant, nonstimulant, adult, child
Longterm investigation of the endometrial safety of a new seven-day sequential oestradiollevonorgestrel combination patch
Sturdee DW
Journal für Menopause , 2000,
Abstract:
Langzeituntersuchung der endometrialen Unbedenklichkeit/Vertr glichkeit eines neuen stradiol-Levonorgestrel-Kombinations-Pflasters für die siebent gige Anwendung
Sturdee DW
Journal für Menopause , 2000,
Abstract:
Global health policies that support the use of banked donor human milk: a human rights issue
Lois DW Arnold
International Breastfeeding Journal , 2006, DOI: 10.1186/1746-4358-1-26
Abstract: Donor milk banking thrives in countries such as Brazil, where there has been a concerted effort at the Health Ministry level to incorporate milk banks into health policy [1]. Its prime mover, Dr. Joao Aprigio Guerra de Almeida, has been honored with the prestigious WHO Sasekawa prize for making an important contribution to his country's overall health by establishing a network of donor human milk banks [2,3]. In countries where donor milk banking is protected, promoted, and supported as an extension of national breastfeeding policies, milk banking is considered a reasonable and effective part of health care delivery for infants and children.Premature infants who are fed infant formula have a higher risk of developing necrotizing enterocolitis (NEC) than when they are fed human milk, either mother's own milk or banked donor milk [4-6]. In this regard, donor milk banking could be considered preventive "medicine" in the premature population; by reducing the incidence of NEC and optimizing central nervous system development, the premature infant has a better start in life than he would have if fed premature infant formula. The argument has been made [7] that these infants become more productive members of society as adults if their health and neurological potential are maximized through optimal nutrition and appropriate health care from the start. This argument is made despite a general lack of published research on the efficacy of banked human milk because in many parts of the world there is a general belief that human milk in any form is superior to manufactured infant formulas. This is contrary to the pervading philosophy among many health care providers, especially in the US, that infant formula and human milk are equivalent.If donor milk banking has been incorporated into national public health policy and regulation, (such as France [8,9], Germany [10,11], and the Scandinavian countries [12]) and/or in other countries with socialized medicine, such as Canada and Gr
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