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Search Results: 1 - 10 of 525208 matches for " G.M.; "
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Arterial calcification: cardiovascular function and clinical outcome
Nefrología (Madrid) , 2011,
Abstract: arterial calcification (ac) is a common complication of ckd and esrd, and the extents of ac are predictive of subsequent cardiovascular mortality beyond established conventional risk factors. ac develop in two distinct sites: the intima and media layers of the large and medium-sized arterial wall. these two forms are frequently associated. ac is tightly associated with aging and arterial remodeling, including intima-media thickening, but also changes of the geometry and function of aortic valves. evidence has accumulated pointing to the active and regulated nature of the calcification process. elevated phosphate and calcium may stimulate sodium-dependent phosphate cotransport involving osteoblast-like changes in cellular gene expression. ac is responsible for stiffening of the arteries with increased left ventricular afterload and abnormal coronary perfusion as the principal clinical consequences.
Ingestión accidental de prótesis dental fija (cantilever) en paciente con historia de carcinoma de colon
Avances en Odontoestomatología , 2011, DOI: 10.4321/S0213-12852011000600005
Abstract: this clinical report describes a case of accidental swallowing of three units cantilever porcelain fused metal bridge in a 51-years-old male with history of colon cancer and reversible colostomy four years ago. while the kind of the ingested foreign body and the prior gastrointestinal conditions recommend a surgical management decision to avoid the risks for perforation or obstruction, in our case the management decision was the conservative approach because of the asymptomatic condition and the radiographic observation of the normal pass the alimentary tract without complications. the fixed dentures should be secure and stable but an incorrect design of the bridge (wrong indication of cantilever; short post systems) are at increased risk of important potential harms (inhalation, oesophageal perforation, enterocolic fistula, intestinal obstruction), invasive intervention or even death, all with medicolegal consequences.
Interferência de plantas daninhas na cultura de mandioca (Manihot esculenta) no estado do Acre
Moura, G.M.;
Planta Daninha , 2000, DOI: 10.1590/S0100-83582000000300009
Abstract: the cultivation of cassava presents several problems in the state of acre - brazil, with weed competition being one of the most important and becoming more serious in the amazon region because weed development is favored by heavy rainfall (around 1900 mm) and high average temperature all over the year. the objective of this research was to determine the total weed interference prevention period in cassava crop and to evaluate the competitiveness of branched and non-branched cassava cultivars. the experiments were carried out at embrapa acre experimental station in rio branco county, state of acre - brazil, from 1995 to 1998, comprising seven weeding periods and two cultivars. in one of the experiments, the cultivars studied were rosada (branched) and p?o (non-branched) and in the next two assays, conducted during the following years, the cultivars grown were im 319 (branched) and rasgadinha (non-branched). the parameters evaluated were root and shoot production, contents of cyanide acid and starch as well as rotten root percentage. cultivar x weeding interaction relative to shoot production was not significant in any year, what shows no competitive advantage of branched over non-branched cultivar. two weedings provided satisfactory root and shoot yield . the results showed that the total weed interference prevention period in the cassava crop was around 60 days after planting and that the contents of starch, cyanide acid and percentage of rotten root were not influenced by the weeds.
Neutron activation method in the analysis of environmental objects
环境科学学报(英文版) , 1995,
Abstract: NeutronactivationmethodintheanalysisofenvironmentalobjectsG.M.Kolesov(V.I.VernadskyInstituteofGeochem。&Anal.Chem.,RussianAcad...
The child's construction of the curriculum
Ivinson, G.M.
Papers on Social Representations , 1998,
Continuing professional development for teachers in South Africa and social learning systems: conflicting conceptual frameworks of learning
G.M. Steyn
Koers : Bulletin for Christian Scholarship , 2008, DOI: 10.4102/koers.v73i1.151
Abstract: To transform education in this country, South African teachers need to be appropriately equipped to meet the evolving challenges and needs of the country. The national policy framework for teacher education and development is an attempt to address the need for suitably qualified teachers in South Africa. Its aim is to improve the quality of education by focusing on the professional development of teachers. This article attempts to address the following research problem: Does continuing professional development for teachers (CPDT), as stipulated by the national policy framework, have the potential to contribute to the development of teachers as proposed by social learning systems? The answer to this question has the potential to inform and influence the policy and its implementation. The answer also describes how conceptual frameworks for learning in Wenger’s social learning systems conflict with effective professional development (PD) programmes and CPDT.
Using reflexive photography to study a principal’s experiences of the impact of professional development on a school: a case study
G.M. Steyn
Koers : Bulletin for Christian Scholarship , 2009, DOI: 10.4102/koers.v74i3.133
Abstract: The changing social and economic environment has a direct impact on schools and their effective management. School principals have to deal with issues hitherto unknown to them in historical school cultures. This article attempts to describe a South African principal’s experience of the way in which professional development (PD) impacted on the development of the school and the way in which his PD – and that of his staff – manifests itself in the functioning of the school. An exploratory qualitative study employing visual ethnography was deemed appropriate for the study. Convenient and selective sampling was used in the study, identifying a school principal who proved to be an exemplar of a principal placing a high premium on his own continuing professional development and that of others. Data were collected by means of reflexive photography, the principal’s writings and a photo-elicitation interview. The fol-lowing categories emerged from the data: the commitment and attitude of the principal to professional development; the head start: receiving the inviting school award; be positive (B+); a focus on client service (doing more than is expected; the blue and orange card system for learners; and inculcating a value system); and what do we do differently?
Creating intentionally inviting schools through professional development: an appreciative inquiry
G.M. Steyn
Koers : Bulletin for Christian Scholarship , 2010, DOI: 10.4102/koers.v75i4.111
Abstract: The professional development (PD) of teachers plays an important role in schools; it is indispensable for continuous school development. When schools are exposed to new approaches to learning and teaching, teachers are granted the opportunities to change their thinking and behaviour. In 2009, two South African schools with specific inviting characteristics were nominated for the inviting school award given by the International Alliance for Invitational Education (IAIE). However, the inviting characteristics of these schools were not explicitly intentional according to the IE philosophy, therefore they had to follow a professional development programme aimed at raising teachers’ awareness of invitational education (IE). Workshops were held to equip staff members with IE knowledge and skills, and to increase their understanding of their current practices with a view of making them more intentionally inviting. The study focused on the following two questions: What are the positive experiences of teaching staff concerning the current approach to teaching and learning in schools?; and What strategies may be introduced to assist teachers and their schools in becoming intentionally inviting? These two questions are based on appreciative inquiry (AI) and IE. A qualitative research design was most appropriate for the purpose of this study. An analysis of the data revealed two categories (the discovery phase: discovering the best of what exists in the school and the dreaming phase: creating a new future) on which AI is based.
Ecological and economic assessment of organic agricultural production (for example, Rivne region)
G.M. Shevchuk
Marketing ì Mened?ment Innovacìj , 2011,
Abstract: The ecological and economic ground of transition of economies of the Rivne region to organic agriculture is conducted . Economic efficiency of conduct of agricultural production is expected without (from) a stabilizing period and with a brief transitional period.
Distribución de los suelos en función del relieve y de la neotectónica en la región sureste de la provincia de San Juan Distribution of soils in relation to relief and neotectonic activity within the tectonic depression of the Tulum valley, in the south-eastern sector of San Juan province
G.M. Suvires
Revista de la Asociación Geológica Argentina , 2004,
Abstract: Se analizan las relaciones suelo-paisaje-neotectónica en la depresión tectónica conocida como valle del Tulum, en el sector sudeste de la provincia de San Juan. El área de estudio se encuentra localizada en la intersección del paralelo 31°30' S y el meridiano 68°29'O. Se reconocen tres principales unidades de relieve, A) abanico aluvial; B) sector de transición entre A y C, y C) planicie aluvial del río San Juan. Consecuentemente con las diferencias de relieves y materiales originarios, estas áreas presentan específicas asociaciones de suelos correspondientes a los Complejos El Salado, Médano de Oro y Ramón Franco respectivamente. Los relieves A y B se caracterizan por suelos Entisoles, mientras que el C por los Aridisoles. Asimismo, la actividad neotectónica, en la región, ha contribuido favorablemente en la formación de los suelos del Complejo Médano de Oro pertenecientes al Suborden Aquents. Soil-landscape-neotectonic relationships were studied in the south-eastern sector of San Juan province, Argentina, (31°30' S, 68°29' W). Three different area types were distinguished: A) alluvial fans, B) transitional area between A and C, and C) alluvial plain of San Juan river. As a result of the different landscape-relief features and parent materials, the three areas have different soil associations within the complexes, El Salado, Médano de Oro and Ramón Franco, respectively. Areas A and B are characterized by entisol order soils sequences, whereas area C has aridisol order soil. The neotectonic activity in the region has contributed favourably to the formation soils in the Médano de Oro Complex, of the Aquents suborder.
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