| 1. |
- Olsson, C .H. B, et al.
(författare)
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Bladmögel hotar persiljeodlingen
- 2008
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Ingår i: Viola, Potatis och Grönsaker. ; 11, s. 18-20
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Tidskriftsartikel (populärvet., debatt m.m.)
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| 2. |
- Puglisi, I., et al.
(författare)
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Two previously unknown Phytophthora species associated with brown rot of Pomelo (Citrus grandis) fruits in Vietnam
- 2017
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Ingår i: Plos One. - : Public Library of Science (PLoS). - 1932-6203. ; 12:2
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Tidskriftsartikel (refereegranskat)abstract
- Two distinct Phytophthora taxa were found to be associated with brown rot of pomelo (Citrus grandis), a new disease of this ancestral Citrus species, in the Vinh Long province, Mekong River Delta area, southern Vietnam. On the basis of morphological characters and using the ITS1-5.8S-ITS2 region of the rDNA and the cytochrome oxidase subunit 1 (COI) as barcode genes, one of the two taxa was provisionally named as Phytophthora sp. prodigiosa, being closely related to but distinct from P. insolita, a species in Phytophthora Clade 9, while the other one, was closely related to but distinct from the Clade 2 species P. meadii and was informally designated as Phytophthora sp. mekongensis. Isolates of P. sp. prodigiosa and P. sp. mekongensis were also obtained from necrotic fibrous roots of Volkamer lemon (C. volkameriana) rootstocks grafted with 'King' mandarin (Citrus nobilis) and from trees of pomelo, respectively, in other provinces of the Mekong River Delta, indicating a widespread occurrence of both Phytophthora species in this citrus-growing area. Koch's postulates were fulfilled via pathogenicity tests on fruits of various Citrus species, including pomelo, grapefruit (Citrus x paradisi), sweet orange (Citrus x sinensis) and bergamot (Citrus x bergamia) as well as on the rootstock of 2-year-old trees of pomelo and sweet orange on 'Carrizo' citrange (C. sinensis 'Washington Navel' x Poncirus trifoliata). This is the first report of a Phytophthora species from Clade 2 other than P. citricola and P. citrophthora as causal agent of fruit brown rot of Citrus worldwide and the first report of P. insolita complex in Vietnam. Results indicate that likely Vietnam is still an unexplored reservoir of Phytophthora diversity.
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| 3. |
- Tri, M. V., et al.
(författare)
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Decline of jackfruit (Artocarpus heterophyllus) incited by Phytophthora palmivora in Vietnam
- 2015
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Ingår i: Phytopathologia Mediterranea. - 0031-9465 .- 1593-2095. ; 54:2, s. 275-280
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Tidskriftsartikel (refereegranskat)abstract
- A new disease of jackfruit (Artocarpus heterophyllus Lam.) was observed in the south-eastern region of South Vietnam. Symptoms included root rot, cankers and gummosis of trunks, chlorosis, wilt, blight of leaves, defoliation, fruit brown rot, and tree death. The disease was found in 10% of surveyed farms with an incidence varying from 2% to nearly 60% of the trees. A Phytophthora species, identified as P. palmivora (Butler) Butler, using the ITS1-5.8S-ITS2 region of the rDNA as a barcode gene and morphological and cultural features, was consistently isolated from symptomatic roots, fruits, trunk cankers and leaves. Koch's postulates were fulfilled using pathogenicity tests on seedlings, leaves and detached fruits of jackfruit. To our knowledge, this is the first report of P. palmivora on jackfruit in Vietnam.
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| 4. |
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| 5. |
- Nilfouroushan, Faramarz, Senior Lecturer, 1968-, et al.
(författare)
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Establishment of a new geodetic infrastructure in Sweden using SAR Corner Reflectors: Progress report
- 2022
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Konferensbidrag (refereegranskat)abstract
- Interferometric Synthetic Aperture Radar (InSAR) is a remote sensing and geodetic technique for ground deformation measurements using radar images of the Earth's surface that are collected regularly by orbiting satellites equipped with SAR sensors. Natural reflectors on the ground which backscatter the radar signal to the satellite are monitored in different time and changes of the line of sight (LOS) distances can detect ground surface movements. Natural reflectors are abundant in many places specially in urban areas. However, areas that are densely vegetated or covered by snow have limitations for InSAR technique and therefore artificial corner reflectors, passive or active ones, can be used instead. These corner reflectors are devices which provide precise measurement points and can be installed at desired locations. These devices can measure temporal LOS changes of the measurement point precisely using InSAR technique.Since 2020, Lantmäteriet has installed three active electronic corner reflectors (ECR) and several types of passive reflectors (CR) in different locations of Sweden. The plan is to continue and complement the national geodetic infrastructure with at least 20 passive reflectors which are collocated with permanent GNSS stations and/or tide gauges. Among others, these colocated permanent GNSS stations and corner reflectors can potentially contribute to the development and validation of the national and European ground motion services. Moreover, the colocation helps to map the relative ground motions estimated with InSAR to an absolute geodetic refercne frame.
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| 6. |
- Nilfouroushan, Faramarz, Senior Lecturer, 1968-, et al.
(författare)
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Status report on the installations of geodetic SAR corner reflectors in Sweden
- 2022
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Konferensbidrag (refereegranskat)abstract
- Interferometric Synthetic Aperture Radar (InSAR) is a remote sensing and geodetic technique for ground deformation measurements using radar images of the Earth's surface that are collected regularly by orbiting satellites equipped with SAR sensors. Natural reflectors on the ground which backscatter the radar signal to the satellite are monitored at different time and changes of the line of sight (LOS) distances can detect ground surface movements. Natural reflectors are abundant in many places, especially in urban areas. However, areas that are densely vegetated or covered by snow have limitations for InSAR technique and therefore artificial corner reflectors, passive, or active ones, can be used instead. These corner reflectors are devices which provide precise measurement points and can be installed at selected locations. These devices can measure temporal LOS changes of the measurement point precisely using the InSAR technique.Since 2020, Lantmäteriet has installed three active electronic corner reflectors (ECR) and several types of artificial passive reflectors (CR) in different locations of Sweden. The corner reflectors are anchored to the bedrock like GNSS stations using metal masts. The installation is in progress and the plan is to continue and complement the national geodetic infrastructure with at least 20 passive corner reflectors which are collocated with permanent GNSS stations and/or tide gauges and/or absolute gravity points. Among other applications, these collocated points link different geodetic measurement techniques, including InSAR and GNSS, and contribute to the development and validation of the national and European ground motion services. Moreover, the GNSS derived velocities and the LOS temporal variations measured on the nearby corner reflectors are useful to transform the relative ground motions estimated with InSAR to an absolute geodetic reference frame.
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| 7. |
- Aboul-Ata, Aboul-Ata E, et al.
(författare)
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Plant-based vaccines: novel and low-cost possible route for mediterranean innovative vaccination strategies.
- 2014
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Ingår i: Advances in Virus Research. - : Elsevier. - 1557-8399. ; 89, s. 1-37, s. 1-37
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Forskningsöversikt (refereegranskat)abstract
- A plant bioreactor has enormous capability as a system that supports many biological activities, that is, production of plant bodies, virus-like particles (VLPs), and vaccines. Foreign gene expression is an efficient mechanism for getting protein vaccines against different human viral and nonviral diseases. Plants make it easy to deal with safe, inexpensive, and provide trouble-free storage. The broad spectrum of safe gene promoters is being used to avoid risk assessments. Engineered virus-based vectors have no side effect. The process can be manipulated as follows: (a) retrieve and select gene encoding, use an antigenic protein from GenBank and/or from a viral-genome sequence, (b) design and construct hybrid-virus vectors (viral vector with a gene of interest) eventually flanked by plant-specific genetic regulatory elements for constitutive expression for obtaining chimeric virus, (c) gene transformation and/or transfection, for transient expression, into a plant-host model, that is, tobacco, to get protocols processed positively, and then moving into edible host plants, (d) confirmation of protein expression by bioassay, PCR-associated tests (RT-PCR), Northern and Western blotting analysis, and serological assay (ELISA), (e) expression for adjuvant recombinant protein seeking better antigenicity, (f) extraction and purification of expressed protein for identification and dosing, (g) antigenicity capability evaluated using parental or oral delivery in animal models (mice and/or rabbit immunization), and (h) growing of construct-treated edible crops in protective green houses. Some successful cases of heterologous gene-expressed protein, as edible vaccine, are being discussed, that is, hepatitis C virus (HCV). R9 mimotope, also named hypervariable region 1 (HVR1), was derived from the HVR1 of HCV. It was used as a potential neutralizing epitope of HCV. The mimotope was expressed using cucumber mosaic virus coat protein (CP), alfalfa mosaic virus CP P3/RNA3, and tobacco mosaic virus (TMV) CP-tobacco mild green mosaic virus (TMGMV) CP as expression vectors into tobacco plants. Expressed recombinant protein has not only been confirmed as a therapeutic but also as a diagnostic tool. Herpes simplex virus 2 (HSV-2), HSV-2 gD, and HSV-2 VP16 subunits were transfected into tobacco plants, using TMV CP-TMGMV CP expression vectors.
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| 8. |
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| 9. |
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| 10. |
- Gomes, João, et al.
(författare)
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Analysis of different C-PVT reflector geometries
- 2016
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Ingår i: Proceedings - 2016 IEEE International Power Electronics and Motion Control Conference, PEMC 2016. - : IEEE. ; , s. 1248-1255
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Konferensbidrag (refereegranskat)abstract
- One of the main advantages of solar concentrating photovoltaic-thermal collectors (C-PVT) is that these systems are all-in-one module type. For this reason, they are associated to less area and material requirements. Nevertheless, these systems require a more complex analysis in order to improve their performances, since the two types of energy conversion are related to the different demands and their cross effects. In the overall analysis, the collector geometry and the used materials for all their components will be crucial to ensure the system reliability. This study presents preliminary work about re-designing the reflector of C-PVT collectors currently produced in the Swedish SME Solarus Sunpower AB with a comparative analysis on an annual basis of the solar radiation that reaches the collector. For the work accomplished, an open-source advanced object-oriented Monte Carlo ray tracing program (Tonatiuh) is used. For low latitudes, two reflector shapes have been selected since they ensure better performances than the current Solarus reflector. These two new designs achieve both the performance and cost-effectiveness objectives: for the same aperture area and for a thinner box, the collector is 7% to 10% more effective and 18% cheaper.
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