899 research outputs found

    Avaliação de genótipos de mamoeiro (Carica papaya L.) para resistência à Phytophthora palmivora Butler.

    Get PDF
    A fruticultura é um dos segmentos de maior crescimento na agricultura e o mamoeiro (Carica papaya L.) aparece como um dos destaques, principalmente após a recente abertura do mercado norte- americano para a exportação de mamão produzido no país. O mamoeiro pode ser considerado originário do noroeste da América do Sul e América Central, com as principais áreas comerciais localizadas entre as latitudes 23oN e S, apesar de serem encontrados plantios em latitudes de até 32oN e S

    Avaliação da deficiência hídrica em genótipos de mamoeiro.

    Get PDF
    O crescimento e a produtividade do mamoeiro são afetados por inúmeros fatores, com destaque para o estresse hídrico, que pode reduzir a produtividade do mamoeiro em até 22%. Os estudos de caracterização genotípica associados a componentes fisiológicos ainda são restritos, em decorrência da complexidade das respostas das plantas frequentemente submetidas a estresses ambientais

    Adesão ao tratamento do diabetes mellitus: Validação de instrumentos para antidiabéticos orais e insulina

    Get PDF
    Objectives: to verify the face validity, criterion-related validity and the reliability of two distinct forms of presentation of the instrument Measurement of Adherence to Treatment, one being for ascertaining the adherence to the use of oral antidiabetics and the other for adherence to the use of insulin, as well as to assess differences in adherence between these two modes of drug therapy. Method: a methodological study undertaken with 90 adults with Type 2 Diabetes Mellitus. The criterion-related validity was verified using the Receiver Operating Characteristic curves; and for the reliability, the researchers calculated the Cronbach alpha coefficient, the item-total correlation, and the Pearson correlation coefficient. Results: the oral antidiabetics and the other showed sensitivity of 0.84, specificity of 0.35 and a Cronbach correlation coefficient of 0.84. For the adherence to the use of insulin, the values found were, respectively, 0.60, 0.21 and 0.68. A statistically significant difference was found between the final scores of the two forms of the instrument, indicating greater adherence to the use of insulin than to oral antidiabetics. Conclusion: it is concluded that the two forms of the Measurement of Adherence to Treatment instrument are reliable and should be used to evaluate adherence to drug treatment among people with diabetes mellitus.info:eu-repo/semantics/publishedVersio

    Method development for measurement of elements in Hungarian red wines by inductivelvy coupled plasma optival emission spectrometry (ICP-OES)

    Get PDF
    ICP-OES (inductively coupled plasma optical emission spectrometry) was used to determine the element content of red wines. Development of the method involves various procedures of sample handling as well as repeatability and reproducibility measurements. Measurements were made for the following 16 elements: Al, B, Ba, Ca, Cd, Co, Cr, Cu, Fe, K, Mg, Mn, Na, P, Sr and Zn. The relative standard deviation of repeatability ranged from 0.41% (potassium) to 27% (cadmium) and that of reproducibility varied between 0.73% (boron) to 52% (cobalt). Recovery of the elements was determined by standard addition with results ranging from 90.6% (phosphorus) to 116.2% (boron). After that, 15 red wine samples were measured. Significant differences were found in the Al, B, Ca, Co, Cr, Cu, Fe, K, Mg, Mn, Na, P, Sr and Zn (P<0.001) concentration of wine samples. Correlation studies revealed parallel changes in phosphorus-potassium, phosphorus-magnesium and zinc-manganese concentrations (r=0.857, 0.875, 0.838). According to principal component analysis, measurements of zinc-, sodium-, boron-, copper- and strontium content gave almost the same results as obtained with 16 different elements. According to a two dimensional non-linear map of absolute values of principal component analysis, wines from Szekszárd and Eger could be differentiated, whereas the analysis of wines from Villány, the Mátra Mountains and Lake Balaton showed overlapping results

    An analytic representation of the total soil carbon trajectory implied by the general mathematical framework of most soil carbon models.

    Get PDF
    In this work we propose such a representation for the total carbon trajectory whose generality embraces implicitly the mechanism of models as Century, RothC and CQESTR.Virtual meeting. ISMC2021-97. Na publicação: Paulino Ribeiro

    Bergman kernel and complex singularity exponent

    Full text link
    We give a precise estimate of the Bergman kernel for the model domain defined by ΩF={(z,w)Cn+1:ImwF(z)2>0},\Omega_F=\{(z,w)\in \mathbb{C}^{n+1}:{\rm Im}w-|F(z)|^2>0\}, where F=(f1,...,fm)F=(f_1,...,f_m) is a holomorphic map from Cn\mathbb{C}^n to Cm\mathbb{C}^m, in terms of the complex singularity exponent of FF.Comment: to appear in Science in China, a special issue dedicated to Professor Zhong Tongde's 80th birthda
    corecore