Search results for "FP"
showing 10 items of 297 documents
Echo cancellation system for iso-frequency repeaters : contribution to the development of a new generation digital repeater
2014
On-frequency repeaters are a cost-effective solution to extend coverage and enhance wireless communications, especially in shadow areas. However, coupling between the receiving antenna and the transmitting antenna, called radio frequency echo, increases modulation errors and creates oscillations in the system when the echo power is high. According to the communication standards, extremely weak echoes decrease the transmission rate, while strong echoes damage electroni ccircuits because of power peaks. This thesis aims at characterizing the echo phenomenon under different modulations, and proposing an optimized solution directly integrated to industry. We have turned to digital solutions esp…
Role of Formyl-Peptide Receptors in Chronic Rhinosinusitis
2010
RNA Transfer by Electroporation into Mature Dendritic Cells Leading to Reactivation of Effector-Memory Cytotoxic T Lymphocytes: A Quantitative Analys…
2005
Previous studies have analyzed transfer of RNA-encoded tumor-associated antigens (TAAs) into immature dendritic cells (DCs) because of their exceptional ability to internalize antigens. Concerns have been raised regarding the use of immature DCs in clinical studies because of their capacity to tolerize T cells. Therefore, we focused on optimizing RNA transfer into mature DCs using the method of electroporation and obtained high protein expression in 90% of mature DCs. Particular emphasis was placed on quantifying RNA transfer. Reconstitution of peptide-MHC (pMHC) ligands on RNA-pulsed DCs was measured with the help of effector-memory cytotoxic T lymphocytes (CTLs) specific for the melanoma-…
Transcription of genes in the biosynthetic pathway for fumonisin mycotoxins is epigenetically and differentially regulated in the fungal maize pathog…
2012
ABSTRACT When the fungal pathogen Gibberella moniliformis (anamorph, Fusarium verticillioides ) colonizes maize and maize-based products, it produces class B fumonisin (FB) mycotoxins, which are a significant threat to human and animal health. FB biosynthetic enzymes and accessory proteins are encoded by a set of clustered and cotranscribed genes collectively named FUM, whose molecular regulation is beginning to be unraveled by researchers. FB accumulation correlates with the amount of transcripts from the key FUM genes, FUM1 , FUM21 , and FUM8 . In fungi in general, gene expression is often partially controlled at the chromatin level in secondary metabolism; when this is the case, the deac…
EGFP Reporters for Direct and Sensitive Detection of Mutagenic Bypass of DNA Lesions
2020
The sustainment of replication and transcription of damaged DNA is essential for cell survival under genotoxic stress
Comparison of two PCR methods for detection of Leptospira interrogans in formalin-fixed and paraffin-embedded tissues
2012
In this study we compared two polymerase chain reaction (PCR) methods using either 16S ribosomal RNA (rRNA) or 23S rRNA gene primers for the detection of different Leptospira interrogans serovars. The performance of these two methods was assessed using DNA extracted from bovine tissues previously inoculated with several bacterial suspensions. PCR was performed on the same tissues before and after the formalin-fixed, paraffin-embedding procedure (FFPE tissues). The 23S rDNA PCR detected all fresh and FFPE positive tissues while the 16S rDNA-based protocol detected primarily the positive fresh tissues. Both methods are specific for pathogenic L. interrogans. The 23S-based PCR method successfu…
A Selective Change Driven System for High-Speed Motion Analysis.
2016
Vision-based sensing algorithms are computationally-demanding tasks due to the large amount of data acquired and processed. Visual sensors deliver much information, even if data are redundant, and do not give any additional information. A Selective Change Driven (SCD) sensing system is based on a sensor that delivers, ordered by the magnitude of its change, only those pixels that have changed most since the last read-out. This allows the information stream to be adjusted to the computation capabilities. Following this strategy, a new SCD processing architecture for high-speed motion analysis, based on processing pixels instead of full frames, has been developed and implemented into a Field …
FPV dronu konfigurācija
2021
Bakalaura darbs “FPV Dronu Konfigurācija” izstrādāts ar mērķi izpētīt un dokumentēt FPV dro-na konfigurācijas procesu. Autors aplūkoja drona konfigurēšanās valdošos nosacījumus un šīs procedūras posmus, bakalaura darbā norādot autora ieskatā labāko drona konfigurēšanās shēmu. Autors, pievēršot uzmanību tādām programmām kā “OpenTX”, “OpenTX Configurator”, “Express LRS”, “ExpressLRS Configurator”, “Betaflight”, “Betaflight Configurator”, konstatē kā minētās programmas ir drona un radio raidītāja jeb kontrollera sastāvdaļas. Tāpat autors aplū-koja tādas drona sastāvdaļas kā ātruma kontrolleris, motors, lidojuma kontrolleris, rāmis, video raidītājs, propelleri un kamera. Tādējādi bakalaura darb…
Iegultā intelekta risinājums heterogenā iegultā sistēmā objektu detektēšanai attēlos
2020
Maģistra darba mērķis ir veikt iegultā intelekta risinājumu izpēti un eksperimentāla risinājumaimplementēšanu heterogenā iegultā sistēmā objektu detektēšanai attēlos.Darbā teorētiski ir aprakstīti heterogēnu iegulto iekārtu un konvolūciju neironu tīklu dar-bības pamatprincipi. Tāpat darbā tiek apskatīti daži populārākie konvolūciju neironu tīkli, kasparedzēti objektu detektēšanai attēlos. Tiek skaidrota to uzbūve un novērtēšanas metodes. Darbapraktiskajā daļā tiek aprakstīta divu dažādu konvolūciju neironu tīklu apmācīšana un uzstādīšanauz heterogēnas iegultās iekārtas, no kuriem viens ir paredzēts attēlu klasificēšanai, bet otrsobjektu detektēšanai attēlos.
Atbalsta rīks čaulu programmu izpētei
2017
Čaulu programma ir lineāri algebrisks skaitļošanas modelis. Šis modelis tiek izmantots kvantu skaitļošanas algoritmu izstrādāšanā. Lai atvieglotu čaulu programmu pētīšanu, par darba mērķi tika izvirzīta programmatūras izstrādāšana, kas atbalsta darbu ar čaulu programmām grafiskajā vidē. Darba galvenie uzdevumi ir izstrādājamās programmatūras aprakstīšana, un sekojošu funkciju nodrošināšana: čaulu programmas ievadīšana un rediģēšana, liecības izmēra, sarežģītības un pilnās sarežģītības noteikšana, funkcijas f_P vērtības noteikšana. Darba rezultātā tika izveidota lietotne, kas atbalsta augstāk minētās funkcijas un vairākas sekundārās funkcijas, kā arī dokumentācija, kurā aprakstītas programma…