Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99


Search Results: 1 - 10 of 345 matches for " Adelaide During "
All listed articles are free for downloading (OA Articles)
Page 1 /345
Display every page Item
Atrial fibrillation in healthy adolescents after highly caffeinated beverage consumption: two case reports
Jennifer R Di Rocco, Adelaide During, Peter J Morelli, Marybeth Heyden, Thomas A Biancaniello
Journal of Medical Case Reports , 2011, DOI: 10.1186/1752-1947-5-18
Abstract: We report the cases of two Caucasian adolescent boys of 14 and 16 years of age at the time of presentation, each without a significant cardiac history, who presented with palpitations or vague chest discomfort or both after a recent history of excessive caffeine consumption. Both were found to have atrial fibrillation on electrocardiogram; one patient required digoxin to restore a normal sinus rhythm, and the other self-converted after intravenous fluid administration.With the increasing popularity of energy drinks in the pediatric and adolescent population, physicians should be aware of the arrhythmogenic potential associated with highly caffeinated beverage consumption. It is important for pediatricians to understand the lack of regulation in the caffeine content and other ingredients of these high-energy beverages and their complications so that parents and children can be educated about the risk of cardiac arrhythmias with excessive energy drink consumption.Atrial fibrillation is extremely rare in the pediatric population, almost always occurring in association with structural heart disease, such as rheumatic mitral valve disease, congenital heart disease with dilated atria, and rarely, as a complication of intra-atrial surgery [1]. Patients may present with palpitations, dyspnea, fatigue, light-headedness, or syncope. The electrocardiogram is characterized by disorganized atrial activity without discrete P waves. The ventricular response is often irregularly irregular. Without a prior cardiac or family history, other inciting causes such as thyrotoxicosis, infectious pericarditis, and pulmonary emboli should be considered in the previously healthy child presenting with new-onset atrial fibrillation [2].Exogenous causes of atrial fibrillation through a substrate such as caffeine have not been widely reported in the literature, especially in the pediatric population. A large-scale Danish study evaluating adult human caffeine consumption and arrhythmias did not fi
Statistical mechanics of Monte Carlo sampling and the sign problem
Gustavo During,Jorge Kurchan
Physics , 2010, DOI: 10.1209/0295-5075/92/50004
Abstract: Monte Carlo sampling of any system may be analyzed in terms of an associated glass model -- a variant of the Random Energy Model -- with, whenever there is a sign problem, complex fields. This model has three types of phases (liquid, frozen and `chaotic'), as is characteristic of glass models with complex parameters. Only the liquid one yields the correct answers for the original problem, and the task is to design the simulation to stay inside it. The statistical convergence of the sampling to the correct expectation values may be studied in these terms, yielding a general lower bound for the computer time as a function of the free energy difference between the true system, and a reference one. In this way, importance-sampling strategies may be optimized.
Assessment of strategic management practice of malaria control in the dangme west district, GhanaArticle submitted to the west african college of nursing for the award of a fellow  [PDF]
Adelaide Maria Ansah Ofei
Health (Health) , 2011, DOI: 10.4236/health.2011.36059
Abstract: Strategic management (SM) practice was as-sessed in all HCFs both in the public and private and some chemical shops within the Dangme West district using semi-structured question-naires. In-depth interviews were carried out with healthcare managers in their clinical setting. The study utilized both qualitative and quantitative methods in describing the SM practice. Healthcare managers were using all the elements of SM in the management of malaria but these were not holistically coordinated. Present were short ranged informal planning based on the objectives of NMCP and day-to-day operation of the HCFs especially with Ghana Health Service facilities. Due to homogenous nature of Dangme West district, management of culture wasn’t given much attention by healthcare managers though healthcare providers were acutely aware of its importance to quality service delivery. Competition was woefully absent in the healthcare environment. No formal structure has been created for the management of malaria control activities with the exception of the involvement of Community Based agents. The district was widely implementing all the strategies of the NMCP with favourable outcomes.
The Effect of Rainfall Characteristics and Tillage on Sheet Erosion and Maize Grain Yield in Semiarid Conditions and Granitic Sandy Soils of Zimbabwe
Adelaide Munodawafa
Applied and Environmental Soil Science , 2012, DOI: 10.1155/2012/243815
Abstract: In semiarid regions, rainfall is one of the primary factors affecting soil erosion and crop production under rain-fed agriculture. The study sought to quantify the effect of rainfall characteristics on sheet erosion and maize grain yield under different tillage systems. It was carried out under semiarid conditions and infertile sandy soils of Zimbabwe. Rainfall amount and intensity were recorded every 24 hours, while sheet erosion was measured from four tillage systems (Conventional Tillage (CT), Mulch Ripping (MR), Tied Ridging (TR) and Bare Fallow (BF)). Maize (Zea mays L.) was grown on three tillage systems (CT, MR, and TR). Rainfall amount varied significantly ( ) between seasons (164–994?mm). CT recorded the highest average soil losses (15?t/ha), while MR and TR recorded 1.3 and 1.2?t/ha, respectively. Maize grain yields increased with increasing seasonal rainfall giving yield-responses of 0.9?t/ha (TR) to 1.3?t/ha (MR) for every 100?mm rainfall increment. Overall, treatments didnot differ significantly ( ), except during drier seasons ( ). Regression equations showed that yields can be confidently predicted using rainfall amount and time, with values of 0.82 to 0.94. Maize grain yields proved to be mostly dependent on rainfall amount than fertility. The productivity of the soils decreased with increased length of cultivation. 1. Introduction Rill and gully erosion in the smallholder areas of Zimbabwe is largely under control through mechanical conservation structures such as contour ridges, grassed waterways, and storm drains [1]. However, sheet erosion is still a major threat to soil fertility and productivity. The sheet erosion process is selective and deprives the soil of its fine particles (clay and organic matter) [2]. These particles are easily splashed out and carried in suspension, while the heavier particles remain behind [3–5]. The soils are thus impoverished as these nutrient reservoirs are lost together with inherent and applied plant nutrients. The bulk density of the soils is increased and plant available water is decreased. According to Stocking and Peake [6], the changes in soil conditions, in many cases, may be describing the effect of erosion induced low soil productivity. In soil erosion research, rainfall amount and intensity (erosive power of rainfall) have been found to be the fundamental factors affecting soil erosion [7, 8]. The impact of raindrops on the soil surface results in temporary capping of the soil and lowered infiltration rate, thus generating runoff [9–11]. Runoff is directly dependent on rainfall amount and
Sécurité des patients et culture de sécurité: une revue de la littérature
Ciência & Saúde Coletiva , 2011, DOI: 10.1590/S1413-81232011000900027
Abstract: depuis la publication du rapport "to err is human" par l'institut de médecine américain, la sécurité des patients est devenu un sujet incontournable des politiques publiques en santé: entre 44 000 et 98 000 personnes décèdent tous les ans aux etats-unis suite à des événements indésirables. en plus de mettre en évidence la nécessité de placer la sécurité des patients comme une priorité des autorités médicales, ce rapport centre ses recommandations sur le changement de culture à l'h?pital. c'est ainsi que le terme "culture de sécurité", utilisé dans le nucléaire depuis 30 ans, fait son apparition en milieu médical à partir des années 2000. l'objectif de cet article est de proposer une revue de littérature sur la culture de sécurité dans le domaine de la sécurité des patients. la recherche bibliographique a été réalisée sur la base de données sciencedirect. au total, 74 références ont été sélectionnées dont 48 ont été retenues pour la rédaction de cet article. l'analyse du matériel retenu a guidé la rédaction de cet article par thématique, à savoir: l'historique de la notion de culture de sécurité et ses approches classiques; et l'apparition de la notion de culture de sécurité en milieu médical, les méthodes d'évaluation existants et les moyens de son développement durable.
La rilevanza civile dei matrimoni religiosi in Italia in una prospettiva comparatistica
Adelaide Madera
Stato, Chiese e Pluralismo Confessionale , 2011,
Abstract: SOMMARIO: 1. L’evoluzione del matrimonio in senso secolaristico – 2. Le riforme legislative in materia matrimoniale in Spagna – 3. La disciplina matrimoniale adottata in Italia – 4. La tutela delle esigenze confessionali: a) in Italia – 5. …b) in Spagna – 6. Le peculiarità della rilevanza civile accordata al matrimonio islamico in Spagna – 7. L’esigenza di una legge aggiornata in materia di libertà religiosa in Italia – 8. Il riconoscimento di forme di autonomia in materia matrimoniale – 9. Possibili forme di riconoscimento delle esigenze confessionali mediante il diritto comune – 10. Il covenant marriage negli U.S.A. – 11. Ammissibilità (o no) del covenant marriage negli ordinamenti di tipo concordatario – 12. Problematiche relative all’assenza di una normativa di attuazione in materia matrimoniale in Italia – 13. Verso la realizzazione di un sistema matrimoniale europeo? – 14. Gli orientamenti rinvenibili nel Regolamento n. 2201 del 2003 Ora pubblicato in Atti dell'Accademia Peloritana dei Pericolanti, classe di Scienze Giuridiche, Economiche e Politiche, vol. LXXV, pp. 319 - 349.
Carreira, Adelaide
Revista Eletr?nica de Educa??o , 2012,
Abstract: Descrevemos a concep o e a aplica o em Portugal de um projeto extracurricular – “O Continhas” – concebido e orientado simultaneamente para os alunos da pré-escola e dos quatro primeiros anos de escolaridade e para os seus respetivos docentes, o qual, em ambiente lúdico e descontraído, transmitisse às crian as participantes ideias, conceitos e métodos da matemática, procurando encorajar nelas a cria o de pensamento lógico-abstrato e, em paralelo, interessá-las e aproximá-las, de maneira rigorosa, mas divertida, de uma disciplina que tanta resistência e rejei o costuma provocar. Instrumentos centrais do projeto s o os seus “Objetos de Aprendizagem”, idealizados visando a aquisi o de conhecimento conceptual e formal de matemática e o espertar da oralidade, do raciocínio abstrato e da capaciade de cálculo. Relatamos particularmente a experiência da aplica o do projeto em uma escola pública, inserida em uma zona ocupada por uma popula o imigrante de baixa renda. Em uma institui o com um aproveitamento escolar bastante inferior à media nacional, a matemática era alvo de um amplo desapre o; em um meio com sérias carências, comuns à institui o e ao alunado, os comportamentos desviantes faziam parte da experiência quotidiana. A aplica o do projeto promoveu altera es positivas nos procedimentos individuais e inter-pessoais dos alunos, implicando uma série de melhorias perceptíveis na sua conduta social e no seu dsempenho escolar global. We describe the conception and application in Portugal of an extra-curricular project – “O Continhas” – conceived and oriented for pre-school and primary school students and their respective teachers, which in a playful and relaxed atmosphere, transfers mathematical ideas, concepts and methods to the participating children, aiming the stimulation of their logical and abstract thinking, and, simultaneously, engaging their interest in and bringing them closer to – in a rigorous, but entertaining way –, a discipline that entails so much resistance and rejection. Central to the project are its ‘Learning Objects’, procedures directed towards the acquisition of conceptual and formal mathematical knowledge, as well as the awakening of orality, abstract thinking and calculation skills. We report the experience of the application of the project in a public school, inserted in a zone occupied by economically deprived recent immigrants. In an environment with serious shortages, common both to the school and to its students, mathematics was the target of generalized disregard; and in an institution with a scholarly rating well belo
Signótica , 2008, DOI: 10.5216/sig.v20i2.6491
Abstract: As formas de avalia o alternativas, tais como apresenta o de p ster e diários de aprendizagem, têm sido criticadas por n o serem instrumentos confiáveis, válidos ou práticos. O objetivo deste artigo é demonstrar como esses dois tipos de avalia o alternativa têm sido usados em cursos de gradua o e pós-gradua o para avaliar os alunos de forma bem sucedida, com critérios claros de modo a permitir uma participa o no processo de avalia o como um todo. PALAVRAS-CHAVE: avalia o alternativa, apresenta o de poster, diário de aprendizagem.


金属学报 , 1992,
Abstract: ZHANG Sanhong;HE Xinlai;CHU Youyi;KE Jun T. Ko University of Science and Technology Beijing,Department of Materials Physics,University of Science and Technology Beijing,Beijing 100083)
Fern Spore Longevity in Saline Water: Can Sea Bottom Sediments Maintain a Viable Spore Bank?
G. Arjen de Groot, Heinjo During
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0079470
Abstract: Freshwater and marine sediments often harbor reservoirs of plant diaspores, from which germination and establishment may occur whenever the sediment falls dry. Therewith, they form valuable records of historical inter- and intraspecific diversity, and are increasingly exploited to facilitate diversity establishment in new or restored nature areas. Yet, while ferns may constitute a considerable part of a vegetation’s diversity and sediments are known to contain fern spores, little is known about their longevity, which may suffer from inundation and - in sea bottoms - salt stress. We tested the potential of ferns to establish from a sea or lake bottom, using experimental studies on spore survival and gametophyte formation, as well as a spore bank analysis on sediments from a former Dutch inland sea. Our experimental results revealed clear differences among species. For Asplenium scolopendrium and Gymnocarpium dryopteris, spore germination was not affected by inundated storage alone, but decreased with rising salt concentrations. In contrast, for Asplenium trichomanes subsp. quadrivalens germination decreased following inundation, but not in response to salt. Germination rates decreased with time of storage in saline water. Smaller and less viable gametophytes were produced when saline storage lasted for a year. Effects on germination and gametophyte development clearly differed among genotypes of A. scolopendrium. Spore bank analyses detected no viable spores in marine sediment layers. Only two very small gametophytes (identified as Thelypteris palustris via DNA barcoding) emerged from freshwater sediments. Both died before maturation. We conclude that marine, and likely even freshwater sediments, will generally be of little value for long-term storage of fern diversity. The development of any fern vegetation on a former sea floor will depend heavily on the deposition of spores onto the drained land by natural or artificial means of dispersal.
Page 1 /345
Display every page Item

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