5,546 research outputs found
Innovations in cryoconservation of animal genetic resources: SECTION 4 The economics of gene banking:Animal Production and Health Guideline
The livestock sector faces a range of challenges, including climate change, emerging diseases, competition for natural resources and evolving demand for animal-source foods, which is increasing globally, especially in developing countries. Genetic diversity of livestock is a key resource for allowing livestock keepers to address these challenges, but this diversity has been in a state of decline. The diminishing genetic diversity thus represents yet another obstacle for sustainable livestock production. Cryoconservation (i.e. ex situ – in vitro conservation) of genetic resources through gene banking provides one of the most powerful tools governments and other stakeholders have to manage genetic diversity in both the short and long term and thereby provide future generations with the tools to meet the challenges ahead.Gene banking genetic resources fits within the context of the Global Plan of Action forAnimal Genetic Resources, which was developed and adopted by FAO Member Nations.Specifically, Strategic Priority 9 of the Global Plan of Action is “Establish or strengthen ex situ conservation programmes” and Strategic Priority 11 urges countries to “Develop approaches and technical standards for conservation. To assist countries in the implementation the Global Plan of Action, FAO worked with experts from around the world to prepare technical guidelines. In 2012 FAO published FAO Guidelines on Cryoconservation of animal genetic resources.Gene banking is a long-term effort that needs to be viewed in terms of decades rather than years, as demonstrated by similar systems for agricultural crops. The responsibility for establishing such resources lies squarely within governments’ roles of providing public goods and food security. Gene banking of animal genetic resources is a technology-intense undertaking and the associated technologies are in a continual state of research and development. The livestock sector also continues to evolve rapidly. Since the development and release of the previous guidelines, numerous changes have taken place. Critical among these is a greater appreciation of the opportunities for actively utilizing cryopreserved material to enhance management of in vivo populations, rather than as simply an “insurance policy” to protect breeds against extinction.This key development has led to further changes in gene bank management. First, interaction with users of the stored material has increased. This in turn has created a need to involve stakeholders more closely in the management of genetic collections and to better monitor and document the processes of gene banking to ensure quality management.Measures have been developed to help ensure high health and sanitary standards. New models and methods have been proposed for utilization of collections in the management of genetic diversity in vivo. Greater potential demand for stored material has also increased the need for expanded procedures and legal instruments, in some instances, to ensur
Educação estética em Marcuse: avaliação em Filosofia para além do textual
The dissertation presents the development and result of a theoretical-practical research that
appropriates the reflections of the philosopher Herbert Marcuse on the aesthetic dimension to
think interdisciplinary didactic-pedagogical activities, more specifically, those directed to the
evaluation in Teaching Philosophy. The practice of teaching in the classroom was based on a
methodology of Philosophy Teaching that stimulated criticism, in the framework of the Critical
Theory of Society, although the fulcrum of the research was what we call “aesthetic evaluation”,
a way of evaluating that it stimulated a process of teaching and learning philosophy in na
alternative form – singing, painting, photographing, etc. -, without running away from reading
and text and philosophical themes and problems dealt with in the History of Philosophy. The
objective was to verify to what extent the aesthetic evaluations, that use artistic parameters, can
contribute in a formative process. The interventions took place in 2017 with four 1st year classes
of high school, from Federal Institute of Education, Science and Technology of Tocantins
(IFTO/Campus Palmas). About 120 students took part in the research, in a context in which
two weekly classes, with fifty minutes each, served to apply the interventions. The aesthetic
evaluations related Philosophy and Arts starting from art as reflection for the textual production
and, in most cases, the philosophical text for artistic production. The students were led to
produce philosophical texts interpreting artistic forms but, above all, they were instigated to
present different artistic expressions of philosophical themes treated in the classroom. The
qualitative research followed the methodological assumptions of Critical Theory to highlight
the contradictions in the process of contemporary educational formation and, more specifically,
the evaluation in Philosophy, trying to bring the syntheses from a theoretical investigation that
merges with the interpretation of the contents present in the students’ productions. The analysis
and interpretation of the data have brought important indicatives to this methodology of
Philosophy Teaching and to the process of evaluation, namely, that the practice of
interdisciplinary in Teaching Philosophy with Arts is an indispensable alternative in the critical
process of teaching and learning, as well as presenting a way of evaluating the value of students’
philosophical and artistic productions.A dissertação apresenta o desenvolvimento e o resultado de uma pesquisa teórico-prática que
se apropria das reflexões do filósofo Herbert Marcuse sobre a dimensão estética para pensar
atividades didático-pedagógicas interdisciplinares, mais especificamente, aquelas direcionadas
para a avaliação no Ensino de Filosofia. A prática de ensino em sala de aula se pautou em uma
metodologia do Ensino de Filosofia que estimulou a crítica, nos moldes da Teoria Crítica da
Sociedade, embora o fulcro da pesquisa tenha sido o que denominamos “avaliação estética”,
uma forma de avaliar que estimulou um processo de ensino e aprendizagem em filosofia de
forma alternativa - cantando, pintando, fotografando etc. -, sem fugir da leitura e do texto e dos
temas e problemas filosóficos tratados na História da Filosofia. O objetivo foi verificar em que
medida as avaliações estéticas, que utilizam parâmetros artísticos, podem contribuir no
processo formativo. As intervenções ocorreram em 2017 com quatro turmas de 1° ano do
Ensino Médio, do Instituto Federal de Educação, Ciência e Tecnologia do Tocantins
(IFTO/Campus Palmas). Cerca de 120 estudantes participaram da pesquisa, num contexto em
que duas aulas semanais, com cinquenta minutos cada, serviram para aplicação das
intervenções. As avaliações estéticas relacionaram Filosofia e Artes partindo ora da arte como
reflexão para a produção textual e, na maioria das vezes, do texto filosófico para a produção
artística. Os estudantes foram levados a produzir textos filosóficos interpretando formas
artísticas, mas, sobretudo, foram instigados a apresentar diferentes expressões artísticas sobre
os temas filosóficos tratados em sala de aula. A pesquisa qualitativa seguiu os pressupostos
metodológicos da Teoria Crítica para evidenciar as contradições no processo de formação
educacional contemporânea e, mais especificamente, da avaliação em Filosofia, procurando
trazer as sínteses a partir de uma investigação teórica que se funde com a interpretação dos
conteúdos presentes nas produções dos estudantes. A análise e a interpretação dos dados
trouxeram indicativos relevantes para essa metodologia do Ensino de Filosofia e para o
processo de avaliação, a saber, que a prática da interdisciplinaridade no Ensino de Filosofia
com as Artes se constitui uma alternativa indispensável no processo crítico de ensino e
aprendizagem, além de apresentar uma forma de avaliar que valoriza a produção filosófica e
artística dos estudantes
On the use of Lagrange Multiplier State-Space Substructuring in dynamic substructuring analysis
In this article, the formulation of Lagrange Multiplier State-Space
Substructuring (LM-SSS) is presented and extended to directly compute coupled
displacement and velocity state-space models. The LM-SSS method is applied to
couple and decouple state-space models established in the modal domain.
Moreover, it is used together with tailored postprocessing procedures to
eliminate the redundant states originated from the coupling and decoupling
operations. This specific formulation of the LM-SSS approach made it possible
to develop a tailored coupling form, named Unconstrained Coupling Form (UCF).
UCF just requires the computation of a nullspace and does not rely on the
selection of a subspace from a nullspace. By exploiting a numerical example,
LM-SSS was compared with the Lagrange Multiplier Frequency Based Substructuring
(LMFBS) approach, which is currently widely recognized as a reference approach.
This was done both in terms of: a)coupled FRFs derived by coupling the
state-space models of two substructures and b) decoupled FRFs derived by
decoupling the state-space model of a component from the coupled model. LM-SSS
showed to be suitable to compute minimal order coupled models and UCF turned
out to have similar performance as other coupling forms already presented to
the scientific community. As for the decoupling task, the FRFs derived from the
LM-SSS approach perfectly matched those obtained by LM-FBS. Moreover, it was
also demonstrated that the elimination of the redundant states originated from
the decoupling operation was correctly performed. The approaches discussed were
exploited on an experimental substructuring application. LM-SSS resulted to be
a reliable SSS technique to perform coupling and decoupling operations with
state-space models estimated from measured FRFs as well as to provide accurate
minimal-order models
Gestão e análise de informação de múltiplas fontes de dados
O Business Intelligence era tradicionalmente uma especialidade explorada fundamentalmente por profissionais da gestão de dados de TI, matemáticos e estatísticos. A tendência é agora, e cada vez mais, a descentralização do acesso e da análise de dados em toda a organização, havendo cada vez mais empresas a reconhecer o Business Intelligence como uma componente ao serviço da estratégica. Este trabalho visa testar uma abordagem de Business Intelligence no desenvolvimento de um sistema de analytics de auxílio à gestão e análise de informação de múltiplas fontes de dados no meio empresarial. De forma a desenvolver o sistema de analytics, este projeto utilizou como caso de estudo a informação retirada de duas fontes distintas de dados de uma empresa que fabricava e vendia bicicletas, peças e acessórios. O design metodológico da investigação foi suportado pela abordagem CRISP-DM, tradicional na construção de um sistema de analytics que, neste caso, recorreu especialmente ao Power BI. No processo de preparação das duas bases de dados estruturadas foi necessária a utilização das ferramentas SQL Server Management, DAX e Excel. Como recurso de apoio ao Business Intelligence, foi concebida uma dashboard interativa com várias páginas, de forma a simular o potencial de gestão do Power BI nas diversas vertentes da empresa, tendo sido exploradas técnicas descritivas e prescritivas para a análise dos dados. Atendendo às diversas vertentes exploradas, ficou comprovado o grande potencial do Power BI como ferramenta de suporte ao Business Intelligence, quer na perspetiva económica quer na perspetiva analytics.Business Intelligence was traditionally a specialty explored primarily by professionals in IT data management, mathematicians and statisticians. The trend is now, and increasingly, the decentralization of access and data analysis across the organization, with more and more companies recognizing Business Intelligence as a component at the service of strategy. This work aims to test a Business Intelligence approach in the development of an analytics system to aid the management and analysis of information from multiple data sources in the business environment. In order to develop the analytics system, this project used as a case study the information taken from two different sources of data from a company that manufactured and sold bicycles, parts and accessories. The methodological design of the investigation was supported by the CRISP-DM approach, traditional in the construction of an analytics system that, in this case, resorted especially to Power BI. In the process of preparing the two structured databases, it was necessary to use the tools SQL Server Management, DAX and Excel. As a resource to support Business Intelligence, an interactive dashboard with several pages was designed in order to simulate the management potential of Power BI in the different aspects of the company, and descriptive and prescriptive techniques for data analysis were explored. Attending to the various aspects explored, the great potential of Power BI as a tool to support Business Intelligence was proven, both from an economic perspective and from an analytics perspective
Avaliação da importância ecológica e biotecnológica de 10 MAGs do filo Latescibacterota recuperados do microbioma de esponjas do recife Amazonas
Dissertação (mestrado)—Universidade de Brasília, Instituto de Ciências Biológicas, Instituto de Ciências Biológicas, Departamento de Biologia Molecular, 2022.As esponjas e seus organismos associados possuem grande importância no ambiente
marinho, atuando em diversos processos ecológicos. Eles ainda são uma fonte relevante de
compostos bioativos que podem ser explorados biotecnologicamente. O Recife Amazonas é
uma região peculiar que abriga enorme diversidade de seres vivos. O local é marcado pela vazão
de água e sedimentos vindos do Rio Amazonas, formando uma pluma de sedimentos que
impacta parâmetros físico-químicos e os organismos habitantes. Tendo isso em mente, foi feita
a análise, através de métodos de bioinformática, de aspectos genéticos e metabólicos de 10
MAGs oriundos da microbiota de esponjas do Recife Amazonas com o intuito de saber sobre
as possíveis contribuições desses microrganismos para o ecossistema e o hospedeiro e sobre a
possibilidade de uso biotecnológico. O projeto iniciou com a coleta de amostras de tecido de
esponjas do recife, seguida pela extração e sequenciamento do DNA metagenômico. A partir
dele, foram recuperados mais de 200 MAGs de boa qualidade, sendo escolhidos 10, com base
em classificações preliminares, para análise mais detalhada. Em seguida, foram desenvolvidos
os seguintes procedimentos in silico: determinação da qualidade dos genomas e da similaridade
entre eles, definição da taxonomia, reconstrução metabólica e busca por compostos bioativos.
Todos os MAGs apresentaram qualidade entre média e alta, com contaminação abaixo de 10%
e completude acima de 70%. Valores de ANI e dDDH indicam que dois pares de MAGs
provavelmente pertencem à mesma espécie. Além disso, os MAGs foram classificados no
mesmo filo, Latescibacterota, e classe, UBA2968. A reconstrução metabólica demonstrou a
presença de genes relacionados à heterotrofia, com processos aeróbicos e anaeróbicos para
obtenção de energia. A identificação de genes envolvidos nas vias de biorremediação e nos
ciclos do nitrogênio, enxofre e fósforo mostram possíveis contribuições para o recife. Genes
ligados à síntese de nutrientes e outros produtos úteis, à desintoxicação de metais pesados, e à
defesa química foram encontrados, indicando possíveis benefícios ao hospedeiro. Do ponto de
vista biotecnológico, os MAGs contêm alguns genes ligados à produção de metabólitos
secundários e que codificam enzimas de interesse comercial e industrial. Também foram
identificados peptídeos bioativos que possuem diversas propriedades. Assim, esse trabalho
mostrou possíveis papéis desses microrganismos no recife, possíveis benefícios às esponjas,
além de formas de exploração biotecnológica.Fundação de Apoio à Pesquisa do Distrito Federal (FAP/DF); Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) e Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq).Sponges and their associated organisms have significant importance in the ocean due to
their role in many ecological processes. They also are a relevant source of bioactive compounds
which can be explored biotechnologically. The Amazon Reef is a peculiar area that hosts a huge
diversity of species. This place is characterized by the leakage of water and sediments from the
Amazon River, generating a plume of sediments that impacts physical-chemical parameters and
living organisms. Having this in mind, an analysis of genetic and metabolic features of 10
MAGs derived from Amazon Reef sponges’ microbiome, through bioinformatics methods. The
main objective was to show possible contributions these microorganisms might give to the
ecosystem and its host and discover possible biotechnology uses. The project began with reef
sponge tissue collection, followed by DNA extraction and sequencing. Over 200 MAGs of good
quality were recovered from the metagenomic DNA. 10 of those MAGs were selected for more
detailed analyses based on preliminary classifications. Then the following procedures were
executed: definition of genomes quality and their similarity, taxonomic classification, metabolic
reconstruction, and search for bioactive compounds. All MAGs presented quality between
average and high. Contamination was lower than 10%, and completeness was higher than 10%.
ANI and dDDH results indicate that two pairs of MAGs probably belong to the same species.
Besides, MAGs were taxonomically assigned in the same phylum, Latescibacterota, and class,
UBA2968. Metabolic reconstruction demonstrated the presence of genes related to
heterotrophy with both aerobic and anaerobic processes for energy acquisition. Identification
of genes involved in bioremediation pathways and nitrogen, sulfur, and phosphorus cycles show
possible contributions to the reef. Genes related to the synthesis of essential nutrients and other
useful products, heavy metals detox and chemical defense were also found, indicating possible
benefits for the host. From a biotechnological point of view, MAGs have some genes linked to
secondary metabolite production while others generate commercial and industrial enzymes.
Biologically active peptides with distinct properties were identified as well. Therefore, this
work shows possible roles for these microorganisms on the reef along with possible benefits
for the sponges. They could also be biotechnologically explored in diverse ways
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