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| Lomnard, Fabien; Boss, Emmanuel; Waite, Anya M.; Vogt, Meike; Uitz, Julia; Stemman, Lars; Sosik, Heidi M.; Schulz, Jan; Romagnan, Jean-baptiste; Picheral, Marc; Pearlman, Jay; Ohman, Mark D; Niehoff, Barbara; Möller, Klas O; Miloslavich, Patricia; Lara-lpez, Ana; Kudela, Raphael; Lopes, Ribens M; Kiko, Rainer; Karp-boss, Lee; Jaffe, Jules S; Iversen, Morten H; Irisson, Jean-olivier; Fennel, Katja; Hauss, Helena; Guidi, Lionel; Gorsky, Gaby; Giering, Sarah L.c.; Gaube, Peter; Gallager, Scott; Dubelaar, George; Cowen, Robert K; Carlotti, François; Briseno-avena, Christian; Berline, Léo; Benoit-bird, Kelly; Bax, Nicholas; Batten, Sonia; Ayata, Sakina Dorothée; Artigas, Luis Felipe; Appeltans, Ward. |
| In this paper we review the technologies available to make globally quantitative observations of particles in general—and plankton in particular—in the world oceans, and for sizes varying from sub-microns to centimeters. Some of these technologies have been available for years while others have only recently emerged. Use of these technologies is critical to improve understanding of the processes that control abundances, distributions and composition of plankton, provide data necessary to constrain and improve ecosystem and biogeochemical models, and forecast changes in marine ecosystems in light of climate change. In this paper we begin by providing the motivation for plankton observations, quantification and diversity qualification on a global scale. We... |
| Tipo: Text |
Palavras-chave: Plankton; Imaging; OceanObs; Autonomous platforms; Global observing; EOVs; ECVs. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00490/60217/63585.pdf |
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| Font, Jordi; Camps, Adriano; Borges, Andres; Martin-neira, Manuel; Boutin, Jacqueline; Reul, Nicolas; Kerr, Yann H.; Hahne, Achim; Mecklenburg, Susanne. |
| Soil Moisture and Ocean Salinity, European Space Agency, is the first satellite mission addressing the challenge of measuring sea surface salinity from space. It uses an L-band microwave interferometric radiometer with aperture synthesis (MIRAS) that generates brightness temperature images, from which both geophysical variables are computed. The retrieval of salinity requires very demanding performances of the instrument in terms of calibration and stability. This paper highlights the importance of ocean salinity for the Earth's water cycle and climate; provides a detailed description of the MIRAS instrument, its principles of operation, calibration, and image-reconstruction techniques; and presents the algorithmic approach implemented for the retrieval of... |
| Tipo: Text |
Palavras-chave: Aperture synthesis; Imaging; Microwave radiometry; Remote sensing; Salinity. |
| Ano: 2010 |
URL: http://archimer.ifremer.fr/doc/00004/11482/8066.pdf |
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| Sandino,Juan D.; Ramos-Sandoval,Olga L.; Amaya-Hurtado,Darío. |
| ABSTRACT In farming the measurement of leaf coverage is considered as an exhaustive task for the researchers due to most of the time they do not have access to the adequate tool for this purpose. A new algorithm, implemented in this investigation, allows to estimate by means of a non-destructive method, the leaf coverage value of strawberry plants (fragaria x ananassa) of the cultivar Albion in the Cajicá region, Colombia, by using digital image processing techniques ( DPI). The DPI based technique includes the smoothing, dilatation, contour detection, threshold and edges detection operations. The image acquisition system was conducted by means of photographic images in plants in study, directly from the beds of the crop and the captures were subsequently... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Imaging; Fragaria x ananassa; Non-destructive method. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000800716 |
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| Das,Satya S.; Hall,Anne V.; Wareham,David W.; Britton,Keith E.. |
| Infection continues to be a major cause of morbidity and mortality worldwide. Nuclear medicine has an important role in aiding the diagnosis of particularly deep-seated infections such as abscesses, osteomyelitis, septic arthritis, endocarditis, and infections of prosthetic devices. Established techniques such as radiolabelled leucocytes are sensitive and specific for inflammation but do not distinguish between infective and non-infective inflammation. The challenge for Nuclear medicine in infection imaging in the 21st century is to build on the recent trend towards the development of more infection specific radiopharmaceuticals, such as radiolabelled anti-infectives (e.g. 99mTc- ciprofloxacin). In addition to aiding early diagnosis of infection, through... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Radiopharmaceuticals; Imaging; Infection; Inflammation; Radiolabelled anti-infectives; 99mTc- ciprofloxacin. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132002000500005 |
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| Signore,Alberto; D'Alessandria,Calogero; Annovazzi,Alessio; Scopinaro,Francesco. |
| Diagnosis and particularly follow-up of chronic inflammatory disorders could be often difficult in clinical practice. Indeed, traditional radiological techniques reveal only structural tissue alterations and are not able to monitor functional changes occurring in tissues affected by chronic inflammation. The continuous advances in the knowledge of the pathophysioloy of chronic disorders, combined with the progress of radiochemistry, led to the development of new specific radiolabelled agents for the imaging of chronic diseases. In this scenario, cytokines, due to their pivotal role in such diseases, represent good candidates as radiopharmaceuticals. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Radiolabelled cytokines; Chronic inflammation; Imaging. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132002000500004 |
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| Santos-Neto,P.J.; Sena-Santos,E.H.; Meireles,D.P.; Santos,I.S.; Bensenor,I.M.; Lotufo,P.A.. |
| Carotid artery assessment by ultrasound is a non-invasive evaluation of subclinical atherosclerosis and a predictor of cardiovascular events. However, ultrasound examinations are operator-dependent. In the Brazilian Longitudinal Study of Adult Health (ELSA-Brasil), ultrasound images have been acquired from more than 10,000 participants. In this article, we describe the reproducibility of carotid intima-media thickness (CIMT), carotid plaque detection, and carotid plaque score (defined as the number of arterial sites with plaques) using ELSA-Brasil protocol, in a subset of 118 participants. Two board-certified radiologists and a trained technician read carotid images. We calculated intra- and inter-observer intraclass correlation (ICC) for CIMT values. We... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Plaque; Intima-media; Epidemiology; Ultrasound; Imaging. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2019000800610 |
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| Bayrak,O.; Demirbas,A.; Doluoglu,O.G.; Karakan,T.; Resorlu,B.; Kardas,S.; Tepeler,A.; Tangal,S.; Adanur,S.; Celik,O.. |
| This study aimed to evaluate the effect of preoperative imaging techniques on the success and complication rates of ureteroscopy. We performed a retrospective analysis of 736 patients (455 males and 281 females), with a mean age of 45.5±15.2 years (range, 1-88 years), who underwent rigid ureteroscopic procedures for removal of ureteral stones. Patients were divided into 4 groups according to the type of imaging modality used: group I, intravenous urography (n=116); group II, computed tomography (n=381); group III, computed tomography and intravenous urography (n=91), and group IV, ultrasonography and abdominal plain film (n=148). Patients’ demographics, stone size and location, prior shock wave lithotripsy, lithotripsy technique, operation time, success... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Computed tomography; Imaging; Intravenous urography; Stone; Ureteroscopy. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2016000100703 |
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