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Search Results: 1 - 10 of 4885 matches for " Juliana Degenhardt "
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Efeito de anos e determina??o do coeficiente de repetibilidade de características de frutos de goiabeira-serrana
Degenhardt, Juliana;Ducroquet, Jean Pierre;Reis, Mauricio Sedrez dos;Guerra, Miguel Pedro;Nodari, Rubens Onofre;
Pesquisa Agropecuária Brasileira , 2002, DOI: 10.1590/S0100-204X2002000900012
Abstract: the environmental variance is quite significant in production and fruits traits, most of quantitative inheritance nature. this study evaluated the effect of years and the determination of the minimum number of necessary years for evaluation one needs for fruit weight, peel weight, length, diameter, relationship length/diameter, pulp revenue and soluble solids contents of fruits of feijoa (acca sellowiana). except for soluble solids contents, the effect of years represented great part of the total variance. based on the repeatability coefficient, it was determined that it would be necessary at least four to six years of evaluation for selection of plants, with accuracy of 80%.
Varia??o fenotípica em plantas de duas famílias de meios-irm?os de goiabeira-serrana (Acca sellowiana Berg.) em um pomar comercial em S?o Joaquim-SC
Degenhardt, Juliana;Ducroquet, Jean-Pierre;Guerra, Miguel Pedro;Nodari, Rubens Onofre;
Revista Brasileira de Fruticultura , 2005, DOI: 10.1590/S0100-29452005000300029
Abstract: feijoa (acca sellowiana berg.) is a native myrtaceae of the brazilian southern plateau with secondary dispersion in uruguay and its fruit has a unique flavor. plants of a commercial orchard of this species originated by two half-sib families (fmi1 and fmi2) were evaluated, with the objective to characterize the phenotypic variation of several traits. the means (±standard deviation) of the evaluated traits, obtained in 2000 were: productivity (29.2±35.0 and 55.1±53.4 fruits per plant); height (2.2±0.7 m and 2.7±0.8 m), canopy diameter (1.9±0.7 m, and 2.1±0.7 m), number of ramifications at 20 cm of the soil (2.4±1.5 and 1.6±1.2) and distance between the stigma and the anthers in the flower (0.5±0.2 cm and 0.2±0.2 cm) for fmi1 and fmi2, respectively. the evaluations revealed significant statistical differences between the two families for plants traits evaluated, except for canopy diameter. the correlations among vegetative traits were not significant, except for height x distance between stigma and anthers (r=-0.53) for fmi1 in 2000. the regressions were not significant, except the regressions between height and productivity for fmi1 in 1998 and between productivity and distance between stigma and anthers in fmi2, in 2000, all with r2 <0.15.
Avalia??o fenotípica de características de frutos em duas famílias de meios-irm?os de goiabeira-serrana (Acca sellowiana Berg.) de um pomar comercial em S?o Joaquim, SC
Degenhardt, Juliana;Ducroquet, Jean-Pierre;Guerra, Miguel Pedro;Nodari, Rubens Onofre;
Revista Brasileira de Fruticultura , 2003, DOI: 10.1590/S0100-29452003000300029
Abstract: fruits of a commercial orchard originated by seedlings from two plants were evaluated, with the objective to characterize the phenotypic variation. statistical differences were found among family means in at least two years for fruit diameter and solids soluble contents, but not for fruit length and pulp revenue. there were statistically significant differences in means among year means, within each family, for all the fruits traits, except for fruit weight between 1998 and 1999 in both families, and for soluble solids contents between 1998 and 1999 for family 1 and between 1999 and 2000 for the other family. the most important correlations and regressions among productive traits were obtained among fruit weight and peel weight, fruit weight and length, fruit weight and diameter, peel weight and length, peel weight and diameter and length and diameter.
Efeito de anos e determina o do coeficiente de repetibilidade de características de frutos de goiabeira-serrana
Degenhardt Juliana,Ducroquet Jean Pierre,Reis Mauricio Sedrez dos,Guerra Miguel Pedro
Pesquisa Agropecuária Brasileira , 2002,
Abstract: A variancia ambiental costuma ser bastante significativa em características de produ o e de frutos, a maioria de heran a quantitativa. Este estudo teve por objetivo avaliar o efeito de anos e determinar o número de anos necessários para avalia o precisa do peso do fruto, peso de casca, comprimento, diametro, rela o comprimento/diametro, rendimento de polpa e sólidos solúveis totais dos frutos de goiabeira-serrana (Acca sellowiana), em três anos de avalia o. Com exce o de sólidos solúveis totais, o efeito de anos representou grande parte da variancia total. A partir do coeficiente de repetibilidade, determinou-se que seriam necessários no mínimo de quatro a seis anos de avalia o para sele o das plantas, com precis o de 80%.
Estabelecimento in vitro de Ocotea odorifera, O. catharinensis e O. porosa In vitro Establishment of Ocotea odorifera, O. catharinensis and O. porosa
Aline Moritz,Juliana Degenhardt,Leonardo Ferreira Dutra,Fabrício Augusto Hansel
Pesquisa Florestal Brasileira , 2010, DOI: 10.4336/2012.pfb.59.37
Abstract: Várias espécies da família Lauraceae encontram-se em risco de extin o, devido ao alto valor comercial de suas madeiras e a consequente explora o das reservas naturais. Dentre elas, Ocotea porosa (imbuia), O. odorifera (canela-sassafras) e O. catharinensis (canela-preta) s o de grande importancia no Sul do Brasil, de onde s o originárias. Estas espécies apresentam sementes recalcitrantes, o que dificulta sua regenera o natural. Alem disso, a propaga o por meio de estaquia e enxertia apresenta limita es. Este trabalho teve por objetivo avaliar a germina o e multiplica o in vitro das canelas preta e sassafrás na presen a de BAP e carv o ativado e a germina o e multiplica o in vitro de imbuia sob diferentes concentra es de sacarose no meio de cultura. Para as canelas preta e sassafrás foram avaliadas duas concentra es de NaClO na desinfesta o de embri es (0,1 % e 0,5 %). Na fase de multiplica o, foi avaliado o efeito de BAP e carv o ativado. Para a imbuia, foi avaliada a influência da concentra o de sacarose (30, 60, 90 ou 120 g.L-1) na introdu o e multiplica o in vitro. A porcentagem de germina o foi superior a 85 % para as três espécies. Para a canela sassafrás, as melhores taxas de multiplica o foram obtidas na presen a de 5 μmol.L-1 de BAP. Para a imbuia, a concentra o de 60 g.L-1 de sacarose no meio proporcionou as maiores taxas de multiplica o. Apesar de o estabelecimento da canela preta ter sido satisfatório, após algumas semanas no meio de multiplica o os explantes n o apresentavam aparência normal e oxidaram. Doi: 10.4336/2009.pfb.59.37 Several species of the Lauraceae family are endangered, due to the high value of their woods, and the consequent exploitation of natural populations. Among them, Ocotea porosa, O. odorifera and O. catharinensis, native from South Brazil, have recalcitrant seeds, what makes even more dificult their natural regeneration. This work aimed to evaluate in vitro seed germination and multiplication of O. odorifera and O. catharinensis in culture medium supplemented with activated charcoal and/or BAP and in vitro seed germination and multiplication of O. porosa in culture medium supplemented with several concentrations of sucrose. The effect of BAP and activated charcoal were tested in the multiplication of O. catharinensis and O. odorifera and the effect of sucrose concentration (30, 60, 90 ou 120 g.L-1) was tested in the multiplication of O. porosa. The germination percentage was higher than 85% for all species. BAP promoted the highest multiplication rates for O. odorifera. O. porosa showed the best
MORFOLOGIA FLORAL DA GOIABEIRA SERRANA (Feijoa sellowiana) E SUAS IMPLICA ES NA POLINIZA O
DEGENHARDT JULIANA,ORTH AFONSO INáCIO,GUERRA MIGUEL PEDRO,DUCROQUET JEAN-PIERRE
Revista Brasileira de Fruticultura , 2001,
Abstract: Esse estudo teve por objetivo caracterizar varia es na arquitetura floral da Feijoa sellowiana e determinar sua influência sobre a poliniza o. Foram avaliados o comprimento do pistilo, a distancia entre estigma e estames, o diametro de abertura e a distribui o dos estames na flor, com base em 7 flores de 15 acessos do Banco de Germoplasma da espécie. Distinguiram-se 3 classes de distancias médias entre estigma e estames: 0,2 (C1), 0,7 (C2) e 1,2 cm (C3), e duas classes de distribui o de estames na flor (radial e aleatória). Sorteou-se uma planta por classe de distancia entre estigma e estames, a qual teve 50 flores marcadas para cada um dos seguintes tratamentos: T1-poliniza o aberta; T2-tela contra pássaros e T3-tela contra pássaros e insetos. A frutifica o foi de 47% em T1 para C2 e de 22% para C3, diferen a que pode ser devida ao genótipo e/ou alternancia de produ o. No T2, a frutifica o foi 31% em C2, 15,4% em C1 e 3% em C3. A superioridade de T1 sobre T2 pode ser devida à poliniza o por pássaros. Essa superioridade foi mais expressiva em C3 do que em C2, o que sugere que C3 é mais dependente de pássaros. A frutifica o em T2 pode ainda evidenciar a poliniza o por insetos e foi menor para C3, o que pode estar sendo causado pelo maior afastamento do estigma. A frutifica o em T3 para C1 (7%) e C2 (15%) sugere que o vento ou a autopoliniza o também possam efetuar a poliniza o.
Avalia o fenotípica de características de frutos em duas famílias de meios-irm os de goiabeira-serrana (Acca sellowiana Berg.) de um pomar comercial em S o Joaquim, SC
Degenhardt Juliana,Ducroquet Jean-Pierre,Guerra Miguel Pedro,Nodari Rubens Onofre
Revista Brasileira de Fruticultura , 2003,
Abstract: Frutos de um pomar comercial composto por progênies de duas plantas matrizes foram avaliados, com o objetivo de caracterizar a variabilidade fenotípica. As características peso de fruto, diametro e sólidos solúveis totais apresentaram diferen as estatísticas significativas entre as médias de famílias em pelo menos dois dos anos avaliados, enquanto para comprimento e rendimento de polpa a diferen a n o foi significativa. Houve diferen a significativa entre médias de anos, dentro de cada família, para todas as características, com exce o das médias de peso de fruto entre 1998 e 1999 nas duas famílias e as médias de sólidos solúveis totais entre 1998 e 1999 em uma família e entre 1999 e 2000 na outra família. As correla es e regress es entre características produtivas mais relevantes foram obtidas entre peso de fruto e peso de casca, peso de fruto e comprimento, peso de fruto e diametro, peso de casca e comprimento, peso de casca e diametro e comprimento e diametro.
Search for High-Mass States with Lepton Plus Missing Transverse Energy Using the ATLAS Detector at Center-of-Mass Energy of 7 TeV
James Degenhardt
Physics , 2011,
Abstract: The ATLAS detector has been used to search for high-mass states decaying into a single high momentum lepton and missing transverse energy, such as new heavy charged gauge bosons. The latest search results for a W Prime boson decaying to lepton plus neutrino in 1.04 fb^-1 of proton-proton collisions at a center of mass energy of 7 TeV produced at the Large Hadron Collider are presented.
Diagnostics, rehabilitation and models of Parkinson’s disease  [PDF]
Juliana Dushanova
Health (Health) , 2012, DOI: 10.4236/health.2012.431178
Abstract: Diagnostics and rehabilitation of Parkinson’s disease (PD) presents the current information pertaining to etiology, early biomarkers for diagnostics, novel methods to evaluate symptoms, multidisciplinary rehabilitation, new applications of brain imaging and invasive methods to the study of PD. Researchers have only recently begun to focus on the non-motor symptoms of PD, which are poorly recognized and inadequately treated by clinicians. The non-motor symptoms of PD have a significant impact on patient quality of life and mortality, and include cognitive impairments, autonomic, gastrointestinal, and sensory symptoms. Indepth discussion of the use of imaging tools to study disease mechanisms is also provided, with emphasis on the abnormal network organization in parkinsonism. Deep brain stimulation management is a paradigm-shifting therapy for PD, essential tremor and dystonia. In the recent years, new approaches of early diagnostics, training programmes and treatments have vastly improved the lives of people with PD, substantially reducing symptoms and significantly delaying disability. PD results primarily from the death of dopaminergic neurons in the substantia nigra. Current PD medications treat symptoms; none halt or retard dopaminergic neuron degeneration. The main obstacle to developing neuroprotective therapies is a limited understanding of the key molecular mechanisms that provoke neurodegeneration. The discovery of PD genes has led to the hypothesis that misfolding of proteins and dysfunction of the ubiquitin-proteasome pathway are pivotal to PD pathogenesis. Previously implicated culprits in PD neurodegeneration, mitochondrial dysfunction and oxidative stress, may also act in part by causing the accumulation of misfolded proteins, in addition to producing other deleterious events in dopaminergic neurons. Neurotoxin-based models have been important in elucidating the molecular cas-cade of cell death in dopaminergic neurons. PD models based on the manipulation of PD genes should prove valuable in elucidating important aspects of the disease, such as selective vulnerability of substantia nigra dopaminergic neurons to the degenerative process.
The Effect of Accompanying In Situ Ductal Carcinoma on Accuracy of Measuring Malignant Breast Tumor Size Using B-Mode Ultrasonography and Real-Time Sonoelastography
A. A. Soliman,S. Wojcinski,F. Degenhardt
International Journal of Breast Cancer , 2012, DOI: 10.1155/2012/376032
Abstract: Objectives. Clinical estimation of malignant breast tumor size is critical for preoperative planning and is crucial for following up the tumor’s response to the therapy in case she receives a neoadjuvant chemotharapy. Ductal carcinoma in situ (DCIS) accompanies about 25.4% of detected invasive breast cancers. The aim of this study was to examine the effect of the presence of DCIS on the accuracy of the ultrasonographic measuring malignant breast tumor size using B-mode and real time elastography. Materials and Methods. We recruited histologically confirmed breast cancer patients in a prospective observational study. Results. We recruited 50 breast cancer patients with a median age of 57.5 years. DCIS was confirmed to accompany 42% ( ?? = 2 1 ) of the cases. Tumor size estimation using B-mode sonography ( ?? < 0 . 0 0 1 ) as well as using real time elastography ( ?? < 0 . 0 0 1 ). was statistically significant correlated to the actual tumor size. Presence of DCIS in 42% of our recruited patients affected the tumor size estimation using both methods thus losing the correlation between both estimations ( ?? = 0 . 7 9 4 ). Conclusion. This study shows that the presence of DCIS significantly affects the accuracy of measuring the sizes of malignant breast tumors when using either B-mode ultrasonography or real time elastography. 1. Introduction Breast cancer is the most common cancer affecting women in Germany. With 58 thousand new cases every year, it is estimated that every tenth woman in Germany will get breast cancer by the age of 74 [1, 2]. That is why breast cancer diagnostic technology occupies a very important position in the scientific community. Clinical estimation of malignant breast tumor size is very important. Most importantly, it is critical for preoperative planning, for whether a patient will receive a mastectomy, or be treated using a breast conservation operation. Without an accurate estimation of tumor size, the preoperative decision can be wrong [3]. Moreover, if tumor sizes are incorrectly estimated, the rate of reoperation will increase, with its risks, or a small tumor-free resection margin may be left behind that can lead to increased rates of local recurrence [4]. With the numbers of patients receiving neoadjuvant chemotherapy for treatment of breast cancer currently increasing, sonographic estimation of tumor size is very important for setting up the initial treatment plan, and then for following up the tumor’s response to the therapy [5, 6]. Moreover, tumor size is one of the most important prognostic factors in breast cancer;
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