Quadratic systems with an invariant algebraic curve of degree 3 and a Darboux invariant

Let QS be the class of non-degenerate planar quadratic differential systems and QS3 its subclass formed by the systems possessing an invariant cubic f(x, y) = 0. In this article, using the action of the group of real affine transformations and time rescaling on QS, we obtain all the possible normalforms for the quadratic systems in QS3. Working with these normal forms we complete the characterization of the phase portraits in QS3 having a Darboux invariant of the form f(x, y)est, with s ∈ R

Integration of Plant Defense Traits with Biological Control of Arthropod Pests: Challenges and Opportunities

Crop plants exhibit a wide diversity of defensive traits and strategies to protect themselves from damage by herbivorous pests and disease. These defensive traits may be naturally occurring or artificially selected through crop breeding, including introduction via genetic engineering. While these traits can have obvious and direct impacts on herbivorous pests, many have profound effects on higher trophic levels, including the natural enemies of herbivores. Multi-trophic effects of host plant resistance have the potential to influence, both positively and negatively, biological control. Plant defense traits can influence both the numerical and functional responses of natural enemies; these interactions can be semiochemically, plant toxin-, plant nutrient-, and/or physically mediated. Case studies involving predators, parasitoids, and pathogens of crop pests will be presented and discussed. These diverse groups of natural enemies may respond differently to crop plant traits based on their own unique biology and the ecological niches they fill. Genetically modified crop plants that have been engineered to express transgenic products affecting herbivorous pests are an additional consideration. For the most part, transgenic plant incorporated protectant (PIP) traits are compatible with biological control due to their selective toxicity to targeted pests and relatively low non-target impacts, although transgenic crops may have indirect effects on higher trophic levels and arthropod communities mediated by lower host or prey number and/or quality. Host plant resistance and biological control are two of the key pillars of integrated pest management; their potential interactions, whether they are synergistic, complementary, or disruptive, are key in understanding and achieving sustainable and effective pest management

On the periodic solutions of the Milchelson continuous and discontinuous piecewise linear differential system

Applying new results from the averaging theory for continuous and discontinuous differential systems, we study the periodic solutions of two distinct versions of the Michel- son differential system: a Michelson continuous piecewise linear differential system and a Michelson discontinuous piecewise linear differential system. The tools here used can be applied to general nonsmooth differential systems

PSICOLOGIA HOSPITALAR E PROCESSO DE LUTO: UM ESTUDO DE CASO.

Ao estudar o homem é impossível não estudar a morte, porque, talvez mais do que na vida, é na morte que descobrimos o verdadeiro sentido de viver. Buscou-se com esse estudo analisar e refletir sobre a atuação da Psicologia em situações de morte no contexto hospitalar, bem como, sobre o processo de despedida das pessoas enfermas para com e seus familiares. Trata-se de um relato de experiência no estagio externo, cuja metodologia adotada foi o estudo de caso, caracterizado pela apresentação e analise de um ritual de despedida.Os resultados evidenciaram a importância de respeitar a vontade do paciente na fase terminal, do qual ele se encontra e da preparação do luto. O ritual de despedida constitui-se em vivências, o que possibilita as mudanças e resgate das relações familiares, bem como de elaboração do processo de luto. Pretende-se com esse estudo contribuir para que outros profissionais da saúde possam ter conhecimento sobre rituais de despedidas prestados ao doente terminal hospitalizado, e todos que o acompanham. Palavras-chave: Psicologia hospitalar. Processo de luto. Doente terminal.E: mails: [email protected];[email protected]  

Microsatellite markers for studies with the carnivorous plant Philcoxia minensis (Plantaginaceae)

Premise of the study: Microsatellite markers were developed for the critically endangered carnivorous species Philcoxia minensis (Plantaginaceae) for further population genetic studies aiming at its conservation. Methods and Results: We identifi ed 29 clones containing 40 microsatellites from a genomic enriched library. A total of 27 primer pairs were developed and evaluated in 30 individuals of a natural P. minensis population. Seventeen markers successfully presented amplifi cation products within the expected size range, of which 12 were polymorphic. The expected and observed heterozygosities ranged from 0.03 to 0.65 and from 0.00 to 0.77, respectively. Positive transferability with the related species P. bahiensis was observed for the same 17 markers. Conclusions: The 12 polymorphic microsatellite markers are suitable for studies in genetic diversity and structure, mating system, and gene fl ow in P. minensis and also may be useful for similar issues regarding the related species P. bahiensis38CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO - CNPQCOORDENAÇÃO DE APERFEIÇOAMENTO DE PESSOAL DE NÍVEL SUPERIOR - CAPESFUNDAÇÃO DE AMPARO À PESQUISA DO ESTADO DE SÃO PAULO - FAPESPSem informaçãoSem informação2012/12927-

Microsatellite Markers For Studies With The Carnivorous Plant Philcoxia Minensis (plantaginaceae).

Microsatellite markers were developed for the critically endangered carnivorous species Philcoxia minensis (Plantaginaceae) for further population genetic studies aiming at its conservation. We identified 29 clones containing 40 microsatellites from a genomic enriched library. A total of 27 primer pairs were developed and evaluated in 30 individuals of a natural P. minensis population. Seventeen markers successfully presented amplification products within the expected size range, of which 12 were polymorphic. The expected and observed heterozygosities ranged from 0.03 to 0.65 and from 0.00 to 0.77, respectively. Positive transferability with the related species P. bahiensis was observed for the same 17 markers. The 12 polymorphic microsatellite markers are suitable for studies in genetic diversity and structure, mating system, and gene flow in P. minensis and also may be useful for similar issues regarding the related species P. bahiensis.

Improving the learning experience and learning environment of adults in Higher Education – Project LIHE: the Portuguese case

Project LIHE: the Portuguese Case. ESREA Fourth Access Network Conference – “Equity, Access and Participation: Research, Policy and Practice”. Edinburgh (Scotland), 11 – 13 December, 2003.The promotion of a knowledge-based society needs, on one hand, technological infrastructure and, on the other hand, a workforce with the necessary skills, knowledge and competences, supported by a well-structured initial education and by a continuous learning program. In the last years, Universities have opened their doors to all citizens, regardless of their status or origin, if they have the capacity to benefit from the educational services on offer. This strategy has allowed mature students to enter (or re-enter) the formal higher education system. Although these students may possess a richness of experience, they can also have difficulty in adapting to the pedagogical approaches of learning and teaching and their attitudes and problems are not necessarily the same as those of traditional students. It is in this context that the project LIHE – Learning in Higher Education emerges. In this paper, the background of the project and the most relevant literature for the subject are briefly described. It is followed by a presentation of the project aims, objectives and methodological approaches. The Portuguese case is introduced, together with the results of questionnaires and interviews. Some preliminary conclusions are outlined. Finally, avenues of future research are discusse

Drilling dimension effects in early stages of osseointegration and implant stability in a canine model

Background: This study histologically evaluated two implant designs: a classic thread design versus another specifically designed for healing chamber formation placed with two drilling protocols. Material and Methods: Forty dental implants (4.1 mm diameter) with two different macrogeometries were inserted in the tibia of 10 Beagle dogs, and maximum insertion torque was recorded. Drilling techniques were: until 3.75 mm (regular-group); and until 4.0 mm diameter (overdrilling-group) for both implant designs. At 2 and 4 weeks, samples were retrieved and processed for histomorphometric analysis. For torque and BIC (bone-to-implant contact) and BAFO (bone area fraction occupied), a general-linear model was employed including instrumentation technique and time in vivo as independent. Results: The insertion torque recorded for each implant design and drilling group significantly decreased as a function of increasing drilling diameter for both implant designs ( p <0.001). No significant differences were de - tected between implant designs for each drilling technique ( p >0.18). A significant increase in BIC was observed from 2 to 4 weeks for both implants placed with the overdrilling technique ( p <0.03) only, but not for those placed in the 3.75 mm drilling sites ( p >0.32). Conclusions: Despite the differences between implant designs and drilling technique an intramembranous-like healing mode with newly formed woven bone prevaile

PESQUISA E EXTENSÃO NA MODALIDADE DE ENSINO A DISTÂNCIA: A EXPERIÊNCIA DA LICENCIATURA EM TURISMO

O ensino a distância surge, no Brasil, como um projeto de ampliação de acesso ao nível superior, porém a garantia do tripé “ensino, pesquisa e extensão” ainda é um desafio para essa modalidade. O ensino a distância é mediatizado pela plataforma do ambiente virtual de aprendizagem (AVA) e por intermédio de tutores, materiais didáticos, polos e de ligações através de números 0800.Além de suscitar uma série de interessantes e relevantes debates acerca de formas de construção do conhecimento, pensar pesquisa e extensão em uma nova modalidade de ensino é rever as concepções filosóficas que permeiam o ensino como um todo. Através da contextualização do ensino a distância no Estado do Rio de Janeiro e do Curso de Licenciatura em Turismo,pretende-se refletir sobre o papel da pesquisa e extensão nesta modalidade, utilizando para tal a experiência em andamento dois projetos de pesquisa e extensão que estão sendo desenvolvidos