683 research outputs found
Knotoids
L'obiettivo di questa tesi è di studiare la teoria dei nodoidi. In particolare, troveremo alcuni interessanti risultati che collegano questa teoria con quella dei nodi e useremo questi risultati ottenuti per sviluppare alcune tecniche volte allo studio delle proteine
Translating the Book “I Conti del Serio” A Memoir of the Bonzi Family History
The purpose of this Senior Project is to translate parts of a family book of history that dates back to 1448. The book “I Conti del Serio” which translates to “The Counts of the Serio River” was originally written in Italian and was published in 1946. The book was given as a gift to the Bonzi family by Enzo Bonzi. This book has been in the family for years but without the linguistic connection it has been inaccessible for the non-Italian speaking family members. “I Conti del Serio” was at times difficult to translate due to the use of many old Italian words and the use of Latin. Due to this, some parts of the book are more of an interpretation rather than an exact translation. Through the skills and knowledge of translation I learned being a World Language and Cultures student, it made the translating process more accessible, as well as allowed me time and space for my Italian language skills to grow. While completing this translation, many discoveries have been made about the family, as well as connections through history. There is also an additional chapter that continues the book to present day. I made an effort to document the family\u27s history since the publishing of the original book, as there have been three generations passed through since its publishing. It is important to note that obtaining knowledge of my family history is something that I do not take lightly and I recognize that it is an immense privilege
Neutrinos
En este artículo vamos a repasar brevemente el Modelo Estándar de Partículas, luego haremos una revisión cronológica del descubrimiento del neutrino. Por último mencionaremos el Observatorio de Neutrinos de Sudbury y Super-Kamiokande, donde han trabajado los recientes ganadores del Premio Nobel de Física, los investigadores Arthur B. McDonald y Takaaki Kajita, respectivamente
Experimental determination of L X-ray fluorescence cross sections for elements with 45 < Z < 50 at 10 keV
Synchrotron radiation at 10 keV was used to experimentally determine the Ll, La, LbI ,LbII , LgI and LgII fluorescence cross sections for elements with 45 < Z < 50, as part of an ongoing investigation at low energies. The measured data were compared with calculated values obtained using coecients from Scoeld, Krause and Puri et al.http://dx.doi.org/10.4279/PIP.060001publishedVersionFil: Bonzi, Edgardo Venusto. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física; Argentina.Fil: Bonzi, Edgardo Venusto. Consejo Nacional de Investigaciones Científicas y Técnicas. Instituto de Física Enrique Gaviola; Argentina.Fil: Grad, G. B. Universidad Nacional de Córdoba. Facultad de Matemática, Astronomía y Física; Argentina.Fil: Barrea, Raúl A. DePaul University. Physics Department; Estados Unidos de América.Física Atómica, Molecular y Química (física de átomos y moléculas incluyendo colisión, interacción con radiación, resonancia magnética, Moessbauer Efecto.
OCULTOS E NÃO MAPEADOS: UMA INVESTIGAÇÃO SOBRE OS CÓRREGOS DO MANDAQUI
Em seu crescimento, a cidade de São Paulo enterrou parte considerável de seus rios e córregos. Ainda que tenha sido investido muito capital nessa operação e que os cursos d´água transformados tenham ganhado status de infraestrutura urbana, não foi feito o registro sistemático de suas características e localizações. O resultado é que até muito recentemente era extremamente difícil saber a localização desses córregos ocultos, o que gerou conflitos e situações potencialmente perigosas. Nos últimos anos, políticas públicas e leis desencadearam a produção de um mapeamento sistemático e detalhado da hidrografia paulistana. A que pese a excelência dos profissionais envolvidos com esse levantamento, observa-se que que a rede hídrica paulistana está representada de maneira incompleta. Este artigo pretende colaborar com o seu refinamento, apresentando e discutindo técnicas utilizadas por pesquisadores para identificar córregos ocultos. Como estudo de caso, foi selecionada a bacia hidrográfica do córrego Mandaqui, na zona norte da cidade. Constata-se que os métodos são diferentes daqueles utilizados no mapeamento oficial, mas não antagonizam entre si. Conclui-se que tais procedimentos são úteis em estudos que exigem um maior detalhamento da hidrografia urbana e sugere-se que sejam utilizados no mapeamento oficial, sobretudo quando não estiver disponível do cadastro de drenagem da prefeitura.During its growth, the city of São Paulo buried considerable part of its rivers and streams. Although it has been invested a great deal of money in this operation and the modified water streams have got status of urban infrastructure, the systematic recording of their characteristics and locations has not been done. The result is that until very recently it was extremely difficult to know the location of these hidden streams, generating conflicts and situations potentially dangerous. During the recent years, public policies and laws triggered the production of a systematic and detailed hydrographical mapping of the city. Despite the excellence of the professionals involved in that survey, it is observed that such a mapping is incompletely represented. So, this article intends to collaborate with its refinement, presenting and discussing techniques used by researchers to identify hidden water streams. As a case study, it was selected the watershed basin of Mandaqui Stream, in the northern region of the city. It was detected that the methods used are different from those of the official mapping, but they do not antagonize each other. It was concluded that mentioned procedures are useful in studies that require better details of the urban hydrography, being suggested its use in official mapping, especially when the official drainage registration is not available
Effet de l’Еnrobage des Semences de Maïs (Zea mays L.) avec Trichoderma harzianum sur la Levée et la Croissance des Plantules au Burkina Faso
Au Burkina Faso, de nombreuses espèces de moisissures infectent les grains de maïs entrainant des fontes de semis, des retards de croissance des plantes et la production de mycotoxines dangereuses pour la santé humaine et animale. L’objectif de la présente étude a été d’évaluer le comportement des semences de maïs enrobées avec les conidies d’une souche locale de Trichoderma harzianum ayant présenté des propriétés antifongiques et amélioré la croissance végétative des plantules d’oignon selon des études antérieurs. Six lots de semences de six variétés de maïs ont ainsi été collectés et analysés pour identifier les espèces de moisissures en présence. Les principales espèces identifiées ont ensuite été confrontées in vitro avec T. harzianum pour apprécier l’antagonisme. Des grains de maïs ont enfin été enrobés avec les conidies de T. harzianum en utilisant de l’argile comme liant puis semés et entrenus pendant vingt-cinq (25) jours pour apprécier la levée et la croissance des plantules. Fusarium verticillioides, Aspergillus niger et Aspergillus flavus ont été les trois principaux champignons présents dans les semences analysées à des taux d’infection variant de 8,3 à 89,5%, en fonction des variétés de maïs. L’évaluation de l’antagonisme de T. harzianum a montré une réduction significative de la croissance de ces trois champignons avec des coefficients d’antagonisme compris entre 0,68 et 0,86. Concernant l’effet promoteur de la croissance végétale, l’enrobage des semences avec T. harzianum a permis d’améliorer significativement la levée, la longueur des plantes et des racines ainsi que la biomasse fraiche par rapport aux semences non enrobées.
In Burkina Faso, many mold species infect maize grains causing seedling damping off, plant growth retardation, and the production of mycotoxins which are dangerous for human and animal health. The objective of the present study was to evaluate the behavior of maize seeds coated with the conidia of a local strain of Trichoderma harzianum having shown antifungal properties and improved the vegetative growth of onion seedlings according to previous studies. Six seed lots from six varieties of maize were thus collected and analyzed to identify the existing mold species. The main identified species were then confronted in vitro with T. harzianum to assess the antagonistic effects. Maize seeds were finally coated with the conidia of T. harzianum using clay as binder and then sown and maintained for twenty-five (25) days to assess the emergence and growth of the seedlings. Fusarium verticillioides, Aspergillus niger, and Aspergillus flavus were the three main fungi present in analyzed seeds lots with infection rates varying from 8.3 to 89.5%, depending on the maize varieties. The evaluation of the antagonism of T. harzianum showed a significant reduction in the growth of the three fungal species with antagonism coefficients situated between 0.68 and 0.86. In terms of plant growth-promoting effect, seed coating with T. harzianum significantly improved seedling emergence, plant and root length and fresh biomass, compared to non-coated seeds
L’Enrobage des Semences de Maïs avec Trichoderma harzianum a Amélioré la Levée et la Croissance des Plantes au Burkina Faso
De nombreuses espèces de moisissures infectent les grains de maïs produits au Burkina Faso. La présence de ces champignons sur les grains entraine des fontes de semis, des retards de croissance des plantes et la production de mycotoxines comme les aflatoxines dont la consommation est dangereuse pour la santé humaine et animale. L’objectif de la présente étude a été d’évaluer le comportement de semences de maïs enrobées avec les conidies d’une souche locale de Trichoderma harzianum ayant présenté des propriétés antifongiques et de promotion de la croissance sur l’oignon. Six lots de semences de six variétés de maïs ont ainsi été collectés et analysés pour identifier les espèces de moisissures en présence. Les trois principales espèces identifiées ont ensuite été confrontées in vitro avec T. harzianum pour apprécier l’antagonisme. Des grains de maïs ont enfin été enrobées avec les conidies de T. harzianum puis semés pour apprécier la levée et la croissance des plantules. Fusarium verticillioides, Aspergillus niger et Aspergillus flavus ont été les trois principaux champignons présents dans les semences analysées à des taux d’infection variant de 8,3 à 89,5%, selon les variétés de maïs. L’évaluation de l’antagonisme de T. harzianum a montré une réduction significative de la croissance de ces trois champignons avec des coefficients d’antagonisme compris entre 0,68 et 0,86. Concernant l’effet promoteur de la croissance végétale, l’enrobage des semences avec T. harzianum a permis d’améliorer significativement la levée, la longueur des plantes et des racines ainsi que la biomasse fraiche par rapport aux semences non enrobées.
Many mold species infect maize grains produced in Burkina Faso. The presence of these fungi on the grains leads to seedling damping off, plant growth retardation and the production of mycotoxins such as aflatoxins, the consumption of which is dangerous for human and animal health. The objective of the present study was to evaluate the behavior of maize seeds coated with the conidia of a local strain of Trichoderma harzianum having shown antifungal and plant growth promoting properties on onion. Six seed lots from six varieties of maize were thus collected and analyzed to identify the existing mold species. The three main identified species were then confronted in vitro with T. harzianum to assess the antagonistic effects. Maize seeds were finally coated with the conidia of T. harzianum and then sown to assess emergence and seedling growth. Fusarium verticillioides, Aspergillus niger and Aspergillus flavus were the three main fungi present in analyzed seeds lots with infection rate varying from 8.3 to 89.5%, according to the varieties of maize. The evaluation of the antagonism of T. harzianum showed a significant reduction in the growth of the three fungal species with antagonism coefficients situated between 0.68 and 0.86. In terms of plant growth promoting effect, seed coating with T. harzianum significantly improved seedling emergence, plant and root length and fresh biomass, compared to non-coated seeds
THE GEOMORPHOLOGICAL ENVIRONMENTAL ZONING AS METHOD FOR GREEN INFRASTRUCTURE PLANNING IN DENSELY URBANIZED AREAS
The concept of Green Infrastructure has been widely accepted in the fields of landscape architecture and urbanism. However, its application in densely urbanized areas lacks adequate methods, once the concept arose in a very different context, the urban sprawl in the United States. This work investigates how the proposal for environmental zoning based on natural processes and geomorphological analysis can scientifically support the implementation of the Green Infrastructure. Thus, to do so, it was identified natural processes prevailing in each environmental area and also mimicked processes or encouraged by each landscape typology. It was concluded that the analysis of the forms of relief identifies which typologies are suitable for each relief compartment, which contributes to the harmonization between the dynamics of the biophysical base and the human occupation.A noção de Infraestrutura Verde vem sendo amplamente aceita nos campos da arquitetura da paisagem e do urbanismo. No entanto, a sua aplicação em áreas densamente urbanizadas carece de métodos adequados, uma vez que o conceito surgiu em um contexto muito diferente, o espraiamento norte-americano. Este trabalho investiga como a proposta de zoneamento ambiental baseado nos processos naturais e na análise geomorfológica pode embasar cientificamente a aplicação da Infraestrutura Verde. Para isso identificamos os processos naturais predominantes em cada zona ambiental e também os processos mimetizados ou incentivados por cada tipologia paisagística. Conclui-se que a análise das formas do relevo permite identificar que tipologias são indicadas para cada compartimento do relevo, o que colabora para a harmonização entre as dinâmicas da base biofísica e a ocupação humana
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