1,206 research outputs found
Medical X-ray images enhancement based on super resolution convolution neural network
No full textPneumonia is a severe lung infection, chest X-ray (CXR) image preferred to find infection. Real images lost its quality, resolution and other feature due to transmission. So good qualitative datasets are very limited. Quality enhancement in medical images is challenging task for researchers. And quality in clinical diagnosis of any disease in deep learning play a very important role. So, this paper presents an aspect with importance of quality in medical images CXR of a particular dataset and how to enhance and create new images with high quality resolution, that is re-used for classification in deep learning. Super resolution convolutional neural netwok (SRCNN) is deep learning based method, which is used for improving resolution in image. Super resolution means low resolution (LR) images from dataset is to be reconstructed or magnified into high resolution (HR). The objective behind this study is to measure the effect of super resolution with quality index, peak signal-to-noise ratio (PSNR), mean squared error (MSE), and structural similarity index measure (SSIM). This experinment performed on 200 images with 10 batches, each batch has 20 images from Kermany dataset, select LR images and converted into HR with SRCNN. Then we find PSNR value of image is increase upto 2 to 5 DB, and MSE of qood quality images is near to zero and MSE decrease up to 20-25, SSIM value have little variation due to same pattern is found in input and output images. Enhancement means highlight or improve the region of interest of pneumonic images. Main goal of this study is to preapare a modified dataset which is further used for classification
A Study of quiescent prominences using SDO and STEREO data
No full textIn this dissertation, we have studied the structure, dynamics and evolution of two quiescent prominences. Quiescent prominences are large structures and mainly associated with the quiet Sun region. For the analysis, we have used the high spatial and temporal cadence data from the Solar Dynamic Observatory (SDO), and the Solar Terrestrial Relations Observatory (STEREO). We combined the observations from two different directions and studied the prominence in 3D. In the study of polar crown prominence, we mainly investigated the prominence flows on limb and found its association with on-disk brightenings. The merging of diffused active region flux in the already formed chain of prominence caused the several brightenings in the filament channel and also injected the plasma upward with an average velocity of 15 km/s. In another study, we investigated the triggering mechanism of a quiescent tornado-like prominence. Flares from the neighboring active region triggered the tornado-like motions of the top of the prominence. Active region field contracts after the flare which results in the expansion of prominence cavity. The prominence helical magnetic field expands and plasma moves along the field lines which appear as a tornado-like activity. In addition, the thermal structure of the tornado-like prominence and neighbouring active region was investigated by analysing emission in six of the seven EUV channels from the SDO. These observational investigations led to our understanding of structure and dynamics of quiescent prominences, which could be useful for theoretical prominence models
Industrial Hemp in the United States: Definition and History
No full textThis publication provides information about industrial hemp, its origins, and its cultivation. Written by Mark Tancig, Christine Kelly-Begazo, Navdeep Kaur, Lakesh K. Sharma, and Zachary Brym, and published by the UF/IFAS Agronomy Department, September 2021
Navdeep Kaur's Quick Files
No full textThe Quick Files feature was discontinued and it’s files were migrated into this Project on March 11, 2022. The file URL’s will still resolve properly, and the Quick Files logs are available in the Project’s Recent Activity
Navdeep Kaur's Quick Files
No full textThe Quick Files feature was discontinued and it’s files were migrated into this Project on March 11, 2022. The file URL’s will still resolve properly, and the Quick Files logs are available in the Project’s Recent Activity
Uses of Raw Products Obtained from Hemp: Fiber, Seed, and Cannabinoids
No full textThis publication discusses three main harvestable products of hemp: fiber, seeds, and cannabinoids, along with their current and potential uses. Written by Navdeep Kaur, Lakesh K. Sharma, Christine Kelly-Begazo, Mark Tancig, and Zachary Brym, and published by the UF/IFAS Agronomy Department, September 2021
Overview of mesenchymal stem cells
No full textStem cells are unprogrammed cells which possess plasticity and self renewal capability. The term of stem cell was first used to describe cells committed to give rise to germline cells, and to describe proposed progenitor cells of the blood system [1]. A unique feature of stem cell is to remain quiescent in vivo in an uncommitted state. They serve as reservoir or natural support system to replenish cells lost due to disease, injury or aging. When triggered by appropriate signals these cells divide and may become specialized, committed cells; however being able to control this differentiation process still remains one of the biggest challenge in stem cell research [2]. The cell division of stem cells is a distinct aspect of their biology, since this division may be either symmetric or asymmetric. Symmetric division takes place when the stem cells divides and forms two new daughter cells. Asymmetric division is thought to take place only under certain conditions where stem cells divides and gives rise to a daughter cell which remains primitive and does not proliferate, and one committed progenitor cell, which heads down a path of differentiation. Asymmetric division of stem cells helps reparative process, and also ensures that the stem cells pool does not decrease, whereas symmetric division is responsible for stem cells undergoing self renewal and proliferation. The factors which prompt the stem cells to undergo asymmetric division are, however, not well understood, but it is clear that the delicate balance between the self renewal and differentiation is what maintains tissue homeostasis
Pseudogenes and host specialization in the emergent bacterial plant pathogen Xylella fastidiosa
No full textBeyond Xylella, Integrated Management Strategies for Mitigating Xylella fastidiosa Impact in Europe (BeXyl) (Grant Agreement 101060593). Partner/Coordinador principal: Blanca B. Landa del Castillo, Investigadora Científica del Instituto de Agricultura Sostenible (IAS-CSIC).Pseudogenes are regarded as "junk" DNA, representing vestigial functions no longer needed for fitness. Accordingly, a higher number of pseudogenes in a bacterial human pathogen was previously hypothesized to be a hallmark of host specialists. In this study, we tested this hypothesis on the emergent bacterial plant pathogen Xylella fastidiosa (Xf) to link pseudogene makeup and host specificity. Xf is an ideal subject for these studies by being a xylem-limited pathogen that underwent extensive genome reduction. Using natural host range data of 151 strains and Pseudofinder analysis on Xf whole genome sequences, we observed that Xf subsp. sandyi had the highest pseudogene content, followed by subsp. morus, while subsp. pauca, fastidiosa, and multiplex had the lowest. The first two subspecies are known to have a limited host range compared to the others, aligning with the hypothesis of a greater number of pseudogenes corresponding to narrower host range. Weed isolates are presumably host specialists because they had the highest pseudogene content. Using a thorough pseudogene map across genomes and empirical pathogenicity data on blueberries, we screened for genes potentially involved in blueberry specialization. Targets were identified by selecting sequences pseudogenized (i) in strains infecting hosts different from blueberry and (ii) only in blueberry asymptomatic strains. Six sequences were identified with a potential role in blueberry infection, including one that was common between the two criteria. Here, we generated hypotheses on host range and specificity of Xf strains that need to be tested experimentally to help understand this devastating plant pathogen.IMPORTANCEXylella fastidiosa is a highly destructive plant pathogen that infects hundreds of landscape and agriculturally important plant species mainly in Europe and the Americas. Nevertheless, the host range of specific genotypes and underlying mechanisms of host specificity remain unclear. These are important aspects to determine the potential risk of infection in specific areas depending on the genetic makeup of the pathogen population and hosts present. This study offers valuable insights into the role of pseudogenization in the genomes of different X. fastidiosa strains, linking it to host specialization. Despite the limited information available for the host range of different strains of this pathogen, this research proposes a relationship between the abundance of pseudogenes and host specificity. These findings are essential for predicting potential host shifts by this pathogen, aiding in the development of strategies to prevent its spread. Additionally, the identification of candidate genes putatively important for symptom development in blueberries offers targets for prevention and control efforts.This work was supported by Project BeXyl (Beyond Xylella, Integrated Management Strategies for Mitigating Xylella fastidiosa impact in Europe; Grant ID No. 101060593) from the European Union’s Horizon Action "Food, Bioeconomy Natural Resources, Agriculture and Environment" program. We also acknowledge the support from the Alabama Agricultural Experiment Station (AAES) (to L.D.L.F. and N.P).Peer reviewe
Dayal Kaur Khalsa: The art of remembering
No full textIn the space of three years in the late eighties, Dayal Kaur Khalsa wrote and illustrated a series of picture books that constitute a visual (auto)biography. In these books, Khalsa explores the meaning and reliability of memory, and the importance of family context in life history. By evoking popular culture and its artifacts in her illustrations, Khalsaprovides afully realised, time-specific world for her character May to inhabit. Furthermore, through the device of self- referential visual quotations, by means of which characters and settings reappear from book to book, Khalsa creates a form of "visual intertextuality" unique in the canon of Canadian picture books.Peer reviewedfinal article publishe
Rupi Kaur: Women’s Writing Tradition in Translation
No full textThis paper will present a brief background of the author, Rupi Kaur, and her artistic work, focusing in her poetry. The book approached is Honey and Milk, and it will be analysed though the feminist criticism theory of Elaine Showalter in order to discuss the poetry of Kaur in the context of the third phase of women’s writing. To achieve that, this paper will discuss some selected poetry and some details about the translation of the book to the Portuguese Brazilian language and the rewriting entailed in the process of translation
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