Reação de genótipos de abacaxizeiro ao nematoide Pratylenchus Brachyurus.

Os fitonematoides são considerados um dos principais fatores limitantes ao cultivo do abacaxizeiro. Estes patógenos causam danos consideráveis às raízes das plantas, diminuindo a eficiência das adubações pela redução da absorção de nutrientes. As plantas apresentam sistema radicular reduzido, folhas cloróticas, estreitas e de tamanho reduzido. Consequentemente, a produção é retardada e com frutos de baixo peso e valor comercial reduzido (Arieira et al., 2008)

Theory of Distance Relativity of Fractal Dimensions

The velocity of a moving object is different when measured from a stationary frame of reference and on a moving frame of reference (see the famous train experiment and the Michelson-Morley experiment). Because velocity is relative to the frame of reference, so do the concepts of “distance” and “time”. Thus, were born the concepts of relativistic mass, relativistic distance, and the notion of time dilation, which practically revolutionized Newton’s classical Physics (Muller, General Theory of Relativity, 1958). In this paper, we investigate how the fractal dimension of the same natural geometric object changes relative to the distance from which a picture of the object is taken. Keywords: Fractal dimension, Distance, Fracta

Comment to "ultrasonic assessment of females with carpal tunnel syndrome proved by nerve conduction study"

Letter to the Edito

Marine mammal strandings along the Indian coast mapped

The stranding locations of marine mammals namely blue whale (Balaenoptera musculus), Bryde’s whale (Balaenoptera edeni), fin whale (Balaenoptera physalus), humpback whale (Megaptera novaeangliae) and minke whale (Balaenoptera acutorostrata) along the Indian coast were mapped (Fig. 1) using passive method. The data was collected for the period 1874 to 2016

Geospatial Technology: An Effective tool for marine mammal conservation

Geospatial Technology: An Effective tool for marine mammal conservatio

Teachers' digital competence to assist students with functional diversity: Identification of factors through logistic regression methods

We are experiencing a serious health crisis due to COVID-19 that has a major impact on the field of education. The educational system therefore needs to be updated and innovated, with the addition of digital resources, to adapt the teaching and learning processes to students with disabilities. To meet the goal of high quality education, teachers must have adequate digital competence to face the educational demands that are placed on them. Therefore, the purposes of this study are: to know the teachers' knowledge about digital resources to support students with disabilities (O1); at each educational stage (O2), identify the variables that have a significant impact on the acquisition of teacher competence (O3); propose a selection of useful ICT resources for each type of disability (O4). An ex post facto design was used with 1194 teachers from Andalusia (Spain). The results showed the medium-low level of the teaching staff, especially in the higher education stage. In addition, gender, motivation, attitude and having students with special needs are determining factors in the development of teacher knowledge. The results highlight the urgent need for teachers to be trained in digital resources. We hope that the range of resources proposed in this study will help teachers enhance their teaching practic

Glutathione-s-transferase pi expression in leukaemia: a comparative analysis with mdr-1 data.

Drug resistance in haemopoietic cells may be partly related to the expression of the glutathione-s-transferase (GST) pi and mdr-1 genes. We have used RNA slot blotting techniques to investigate the expression of GST pi in peripheral blood and bone marrow of eleven normal subjects, nine patients with myelodysplastic syndrome (MDS), eighteen patients with acute myeloblastic leukaemia (AML), and thirty-two patients with chronic lymphocyte leukaemia (CLL). We found increased expression of GST pi in 8 of 9 MDS, (7 peripheral blood, 1 bone marrow) 12 of 18 AML (5 peripheral blood, 7 bone marrow; 4 of 5 untreated, 1 of 5 secondary, 7 of 11 relapse or refractory) and in the peripheral blood of 24 of 32 CLL (3 of 7 untreated, 21 of 25 treated) relative to normal controls. Increased expression of GST pi can occur at any stage of disease and shows no clear relation to mdr-1 expression except, possibly, in CLL. In 3 AML patients GST pi transcript levels were the same or lower on relapse compared to presentation. Upregulation of the GST pi gene could not be demonstrated in 2 CLL patients in response to treatment with intermittent chlorambucil

Digital Competence of university students with disabilities and factors that determine it. A descriptive, inferential and multivariate study

Taking into account that 15% of the world population suffers from some type of disability, few investigations have been concerned with knowing the level of digital competenceDigital Competence that students with functional diversity have. This research is based on an initial sample of 17,301 newly enrolled university students from the Andrés Bello University (Chile), of which 650 are selected for having some type of disability. Its main objective is to know the level of self-perception in the digital competenceDigital Competence of university students with disabilities and the variables that explain it. To do this, an evaluation instrument consisting of 6 dimensions (technological literacy, information search and processing, critical thinking, problem solving and decision making, communication and collaboration, digital citizenship, and communication and collaboration) is designed and applied. To calculate the validity of the instrument, the partial least squares (PLS) method is applied through structural equation modeling. Next, data is provided regarding the level of Digital CompetenceDigital Competence of the students and if there are differences between the types of disability. Finally, the data is subjected to a logistic regression to estimate the relationship between the dependent variable (digital competenceDigital Competence) and a set of independent variables (sociodemographic variables). The results reveal that the instrument used shows high levels of reliability, which guarantees its use in students with disabilities. Likewise, the average level of digital competenceDigital Competence is medium low. Finally, tThe factors that affect this variable are discussed and the necessary structuring of digital literacy plans is highlighted. Finally, this paper discusses new techniques for diagnosing students' digital skills

Generalised Hong-Ou-Mandel Experiments with Bosons and Fermions

The Hong-Ou-Mandel (HOM) dip plays an important role in recent linear optics experiments. It is crucial for quantum computing with photons and can be used to characterise the quality of single photon sources and linear optics setups. In this paper, we consider generalised HOM experiments with $N$ bosons or fermions passing simultaneously through a symmetric Bell multiport beam splitter. It is shown that for even numbers of bosons, the HOM dip occurs naturally in the coincidence detection in the output ports. In contrast, fermions always leave the setup separately exhibiting perfect coincidence detection. Our results can be used to verify or employ the quantum statistics of particles experimentally.Comment: 11 pages, 2 figures, more references adde