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Journal articles on the topic 'DVB DVB-S'

Author: Grafiati

Published: 4 June 2021

Last updated: 11 February 2022

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1

Jasim Mohammed, Samir, and Zaid Saadi Hussein. "Design and implementation DVB-S & DVB-S2 systems." Indonesian Journal of Electrical Engineering and Computer Science 20, no. 3 (2020): 1444. http://dx.doi.org/10.11591/ijeecs.v20.i3.pp1444-1452.

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<p>Digital video broadcasting plays an important role in most digital communication systems. Digital broadcasting systems are designed with great accuracy and delicate design which has a major role in our lives today especially digital video broadcasting. It is these systems that are considered to be the most advanced in transmission, reception and reliability. From these systems they develop through the digital video broadcasting project group.The most important are digital video broadcasting of terrestrial, digital video broadcasting of cable and digital video broadcasting of satellite

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2

C. Deus, Laylana, Carla Michele Frota da Silva, Maximiliano F. Martins, Thiago M. Aversa, and Elizabete Fernandes Lucas. "Removing ammonium from water using porous resins: influence of polymer structure, ion exchange capacity and porosity." DYNA 88, no. 217 (2021): 237–46. http://dx.doi.org/10.15446/dyna.v88n217.94086.

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This study describes the synthesis of polymeric resins based on styrene (STY), glycidyl methacrylate (GMA) and divinylbenzene (DVB), modified chemically through sulfonation reactions during different time intervals, to learn the influence of the materials’ structure on their adsorption capacity and evaluate their potential for application in the removal of ammonium from wastewater to levels compliant with the technical standard NT202, R-10 (INEA, 1986). The results showed that besides the duration of the sulfonation reaction, factors such as surface area and pore diameter also contributed sign

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3

Pisciottano, Iole, Diego Cristallini, and Debora Pastina. "Maritime target imaging via simultaneous DVB‐T and DVB‐S passive ISAR." IET Radar, Sonar & Navigation 13, no. 9 (2019): 1479–87. http://dx.doi.org/10.1049/iet-rsn.2018.5622.

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4

Wang, Cheng Chien, Chih Lung Chiu, and Jian Sheng Shen. "Preparation of Polymer Nanoparticles and Application on Nitrile-Butadiene Rubber Reinforcement." Materials Science Forum 900 (July 2017): 35–39. http://dx.doi.org/10.4028/www.scientific.net/msf.900.35.

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The different amount of hydrophilic hydroxyl group, including 3, 5, 7 and 10 wt.% copoly (styrene-co - divinyl benzene – co - 2-hydroxylethylenemethacrylate) (poly (St-co-DVB- co -HEMA) s) nanoparticles were synthesized via microemulsion polymerization in the present paper. The average size of the poly (St-co-DVB-co-HEMA) s was ca. 44 nm after zetasizer (DLS) measurement and SEM observation. The characteristic peaks at 3200 ~3600 cm-1 in FTIR was assigned at hydroxyl group of HEMA unit. The NBR/poly (St-co-DVB-co-HEMA) s composites films with 250 μm thickness were prepared simply via latex mix

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Bereta, Tomasz, Ewa Mieczyńska, Sylwia Ronka, Włodzimierz Tylus, and Anna M. Trzeciak. "Effect of solvent in the hydrogenation of acetophenone catalyzed by Pd/S-DVB." New Journal of Chemistry 45, no. 11 (2021): 5023–28. http://dx.doi.org/10.1039/d1nj00219h.

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6

Zhao, Chunxia, Da He, Qiuxia Yang, Yuntao Li, and Jie Yue. "Preparation and properties of semi-IPN proton exchange membranes based on SPEEK and cross-linked PSt-DVB for direct methanol fuel cells." High Performance Polymers 29, no. 9 (2016): 1110–17. http://dx.doi.org/10.1177/0954008316669991.

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Sulfonated poly(ether ether ketone)/poly(styrene-divinylbenzene) (SPEEK/PSt-DVB) semi-interpenetrating polymer networks (semi-IPNs) were prepared to be used as proton exchange membranes (PEMs) for direct methanol fuel cells (DMFCs) applications. The morphologies of the membranes were investigated using field emission scanning electron microscopy. The ion-exchange capacity, water uptake, proton conductivity, methanol permeability, mechanical properties, and the thermal stability were characterized for each of the various semi-IPN membranes and evaluated for DMFC suitability. The semi-IPN SPEEK/

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7

Chen, Si Qun, Zi Cai Sun, Xiao Wei Wang, Xiao Hui Chen, and Jian Jun Chen. "Preparation of Poly (MMA-S-DVB) Microspheres by Suspension Polymerization Method." Materials Science Forum 745-746 (February 2013): 53–59. http://dx.doi.org/10.4028/www.scientific.net/msf.745-746.53.

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In this work, Poly (methy methacrylate-styrene-divinyl benzene) (MMA-S-DVB) microspheres were prepared by suspension polymerization approach in the presence of n-dodecane as porogenic agent. Various types of measurements,such as binocular biological microscope with micrometer, fourier transform infrared (FT-IR) and N2 absorption analysis (BET) were conducted to characterize the MMA-S-DVB microspheres. The effect of the amount of surfactants (PVA and NaCl), porogenic agent and crossing agent (DVB) on the morphology of microspheres was investigated and mass ratio of oil/water and the stirring sp

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8

Li, Nan, Bo Jiang, Jing Yong Liu, Wei Zhang, and Xing Xing Chen. "Simulation of Satellite Digital Video Broadcasting via Variable Frequency Based on Simulink." Applied Mechanics and Materials 197 (September 2012): 441–47. http://dx.doi.org/10.4028/www.scientific.net/amm.197.441.

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The traditional cable television broadcasting, digital mobile television broadcasting and the direct satellite video broadcasting ensure the television services of people’s daily life. Owing to digital broadcast satellite, also known as the digital video broadcasting (DVB) protocol applying terminal, direct-to-home television services with an outdoor dish of one meter come true. In order to accommodate the requirements of various broadcasting services, the DVB-S.2 protocol provides more efﬁcient technology details. The LDPC codes concatenated with BCH codes achieve high performance near the Sh

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9

Stojce Ilcev, Dimov. "Network architecture of internet backhaul by DVB-RCS standards for shipborne and other mobile applications." International Journal of Engineering & Technology 9, no. 3 (2020): 830. http://dx.doi.org/10.14419/ijet.v9i3.31087.

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In this paper is introduced a new Digital Video Broadcasting-Return Channel via Satellite (DVB-RCS) for the implementation of modern satellite Internet for shipborne, Vehicleborne and airborne mobile applications via Geostationary Erath Orbit (GEO) satellites. Mobile Satellite Internet aims at providing the next generation satellite broadcasting service through C, Ku and Ka-band DVB-S2 standard for Mobile Earth Stations (MES) via GEO satellite and Land Earth Stations (LES) to the ground or other mobile subscribers. It is de facto a mobile interactive broadcast satellite access system, which pr

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10

H, Mahmudul, Sirajum M, Syed N.S, A. K.M. F.H, Shahina H, and Tasnim I.R. "Design and Development of an LNB based DVB-S receiver." International Journal of Engineering & Technology 7, no. 3.19 (2018): 66. http://dx.doi.org/10.14419/ijet.v7i3.19.16989.

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This paper introduces an LNB-based DVB-S receiver with respect to sync byte detection. The basic configuration of DVB-S for decoding is the major focus of this work, where the main task is to decode the received signal from the satellite with a good SNR. Sync-byte detection is one of the challenges of receiver design. An algorithm is developed to overcome the problems associated with Sync-byte detection which can efficiently perform Sync-byte detection. After decoding the signal, the SNR is found to be 9.62 dB, which represents quiet a good signal. A channel list is identified in the final res

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11

Kiswandono, Agung Abadi, Dwi Siswanta, Nurul Hidayat Aprilita, and Sri Juari Santosa. "TRANSPORT OF PHENOL THROUGH INCLUSION POLYMER MEMBRANE (PIM) USING COPOLY(EUGENOL-DVB) AS MEMBRANE CARRIERS." Indonesian Journal of Chemistry 12, no. 2 (2012): 105–12. http://dx.doi.org/10.22146/ijc.21348.

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Copoly(eugenol-DVB) with DVB composition of 2%, 6% and 12% had been prepared and characterized by FTIR spectroscopy. The copolymers were used as membrane carriers for the transport of phenol using the polymer inclusion membranes (PIM) based on polyvinylchloride (PVC) as membrane support. The experimental conditions for investigation of the transport of phenol through the membranes were pH of the source phase, NaOH concentration in the stripping phase, membrane thickness, phenol concentration and transport time. The results showed that the optimum condition for phenol transport was achieved on

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12

Moreira, Ruth da Maia, and Silvio Rogério Correia de Freitas. "CONEXÃO DE SISTEMAS VERTICAIS DE REFERÊNCIA LOCAIS AO SISTEMA GEODÉSICO BRASILEIRO COM BASE EM UM SISTEMA VERTICAL DE REFERÊNCIA GLOBAL." Boletim de Ciências Geodésicas 22, no. 2 (2016): 232–47. http://dx.doi.org/10.1590/s1982-21702016000200013.

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Os Modelos Globais do Geopotencial (MGGs), em especial os oriundos da missão GOCE, associados a Modelos Digitais de Altitude (MDAs) com resoluções cada vez melhores, têm possibilitado novas alternativas para a obtenção de altitudes com significado físico. Neste trabalho, propõe-se a realização de um sistema local de altitudes, em uma área onde o Sistema Geodésico Brasileiro (SGB) é deficiente, e vinculá-lo a um Sistema Vertical de Referência Global (SVRG) e ao SGB. Os MGGs foram validados utilizando Referências de Nível associadas com posicionamento GPS. Para modelar o erro de omissão dos MGGs

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13

Smerzi, S. A., G. Girlando, T. Copani, and G. Palmisano. "A Ku-band monolithic receiver for DVB-S applications." IEEE Communications Magazine 42, no. 8 (2004): 132–39. http://dx.doi.org/10.1109/mcom.2004.1321405.

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14

Yassaa, N., T. Custer, W. Song, F. Pech, J. Kesselmeier, and J. Williams. "Quantitative and enantioselective analysis of monoterpenes from plant chambers and in ambient air using SPME." Atmospheric Measurement Techniques 3, no. 6 (2010): 1615–27. http://dx.doi.org/10.5194/amt-3-1615-2010.

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Abstract. A headspace solid-phase microextraction (HS-SPME) and gas chromatography/mass spectrometry (GC/MS) system has been developed for quantifying enantiomeric and nonenantiomeric monoterpenes in plant chamber studies and ambient air. Performance of this system was checked using a capillary diffusion system to produce monoterpene standards. The adsorption efficiency, competitive adsorption and chromatographic peak resolution of monoterpene enantiomer pairs were compared for three SPME fibre coatings: 75 μm Carboxen-PDMS (CAR-PDMS), 50/30 μm divinylbenzene-carboxen-polydimethylsiloxane (DVB

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Yassaa, N., T. Custer, W. Song, F. Pech, J. Kesselmeier, and J. Williams. "Quantitative and enantioselective analysis of monoterpenes from plant chambers and in ambient air using SPME." Atmospheric Measurement Techniques Discussions 3, no. 4 (2010): 3345–81. http://dx.doi.org/10.5194/amtd-3-3345-2010.

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Abstract. A solid-phase microextraction (HS-SPME) and gas chromatography/mass spectrometry (GC/MS) system has been developed for quantifying enantiomeric and nonenantiomeric monoterpenes in plant chamber studies and ambient air. Performance of this system was checked using a capillary diffusion system to produce monoterpene standards. The adsorption efficiency, competitive adsorption and chromatographic peak resolution of monoterpene enantiomer pairs were compared for three SPME fibre coatings: 75 μm Carboxen-PDMS (CAR-PDMS), 50/30 μm, divinylbenzene-carboxen-polydimethylsiloxane (DVB-CAR-PDMS

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16

Ma, Yuxin, Dandan Han, Yingjie Lei, and Tao Zhu. "Dispersion solid-phase extraction of flavonoid with amphiphilic monomersN-vinyl pyrrolidone and 1H,1H,7H-dodecafluoroheptyl methacrylate based poly(styrene-divinylbenzene) and silica." Analytical Methods 10, no. 38 (2018): 4680–88. http://dx.doi.org/10.1039/c8ay01118d.

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17

Azman, Muhammad Imran, Jirasuta Chungprempree, Jitima Preechawong, Pornsri Sapsrithong, and Manit Nithitanakul. "Layer-by-Layer (LbL) Surface Augmented Modification of Poly(Styrene/Divinylbenzene)High Internal Phase Emulsion for Carbon Dioxide Capture." Polymers 13, no. 14 (2021): 2247. http://dx.doi.org/10.3390/polym13142247.

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In this study, we used amines electrolyte solution with layer-by-layer (LbL) technique to modify and increase the CO2 adsorption capacity of highly porous polymer from high internal phase emulsion template polymer. This perspective presents the extraordinary versatility of emulsion templating polymerization, which has emerged with the growing numbers of HIPE systems and modification. In this study, we used polyHIPE prepared from styrene (S) and divinylbenzene (DVB) with varying ratios; 80:20, 20:80, and 0:100 to improve the surface area, thermal properties, and mechanical properties of the mat

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18

Muslim, Muslim, and Iwan Krisnadi. "Strategi LPS-RTV Dalam Era Siaran Digital Yang Menjadi Salah Satu Penyelenggara Multipleksing Di Wilayah Jabodetabek." Jurnal Telekomunikasi dan Komputer 7, no. 1 (2017): 1. http://dx.doi.org/10.22441/incomtech.v7i1.1161.

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Dengan perkembangan Teknologi konvergensi, serta mengacu padaperaturan Menteri Komunikasi dan Informatika Indonesia Nomor36/PER/M. KOMINFO/11/2012. tentang Persyaratan Teknis Alat danPerangkat Pemancar Televisi Siaran Digital Berbasis Standar DigitalVideo Broadcasting Terrestrial – Second Generation DVB-T2. Yangmana standar generasi kedua ini memiliki keunggulan dari generasisebelumnya diantaranya ada penghematan 50% daya dan tambahankapasitas data ratenya mencapai 40 Mbit/s. Dengan menggunakanCOFDM – Modulasi 64QAM untuk penerimaan tidak bergerak dan256QAM untuk HDTV. Digital Video Broadcasti

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Bossuet, Lilian, and Guillaume Ferre. "Etude et modélisation sous Simulink d'une chaîne de transmission DVB-S." J3eA 7 (2008): 0005. http://dx.doi.org/10.1051/j3ea:2008038.

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20

Samaraweera, Nihal K. G. "Return link optimization for internet service provision using DVB-S networks." ACM SIGCOMM Computer Communication Review 29, no. 3 (1999): 4–13. http://dx.doi.org/10.1145/505724.505726.

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21

Li, Junjie, Junkang Wei, Zhihui Cao, et al. "A DVB-S-Based Multichannel Passive Radar System for Vehicle Detection." IEEE Access 9 (2021): 2900–2912. http://dx.doi.org/10.1109/access.2020.3047525.

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22

Menkhoff, A., M. Harteneck, M. Kindler, and P. Schollhorn. "Performance of an advanced receiver chip for DVB-S and DSS." IEEE Transactions on Consumer Electronics 45, no. 3 (1999): 965–69. http://dx.doi.org/10.1109/30.793658.

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23

Granados Cárdenas, Jean Paul, Danilo Alfonso López Sarmiento, and César Augusto Hernández Suárez. "PROPUESTA INICIAL PARA EL DESARROLLO DE UNA METODOLOGÍA PARA LA IMPLEMENTACIÓN DE IPTv6 SOBRE IMS." Redes de Ingeniería 4 (September 26, 2013): 6. http://dx.doi.org/10.14483/2248762x.6362.

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La televisión digital ha evolucionado continuamente desde su presentación digital terrestre (DVB-T), pasando por el estándar satelital (DVB-S) hasta llegar a su presentación actual conocida como IPTV (Internet Protocolo Television) que ofrece múltiples servicios multimedia tales como voz, video y datos, transportados con ciertos niveles de calidad de servicio, seguridad, interactividad y confianza gracias a la utilización de la pila de protocolos TCP/IP. En tal sentido el artículo pone a disposición de la comunidad académica una propuesta metodológica inicial que pretende servir de guía en la

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Antes, Jochen, Daniel Lopez-Diaz, Axel Tessmann, et al. "Wireless multi-gigabit data transmission using active MMIC components at 220 GHz." International Journal of Microwave and Wireless Technologies 4, no. 3 (2012): 291–98. http://dx.doi.org/10.1017/s1759078712000190.

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In this paper we present a wireless data link for multi-gigabit transmission in the mmW frequency range. The link is realized using waveguide modules based on fully integrated 50 nm metamorphic high electron mobility transistor (mHEMT) transmit and receive millimeter wave monolithic integrated circuits (MMICs) and provides transmission of data rates up to 12.5 Gbit/s modulated on a 220 GHz carrier. The receiver input sensitivity is characterized down to values of −38.6 dBm and shows an error rate of 3.0 × 10−9. Measurements using a coherent link setup show bit error rates better than 1.6 × 10−

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Xing, Hong Mei, Lei Sun, and Yan Zeng. "Functional Requirements in Video-on-Demand Transmission System." Advanced Materials Research 1044-1045 (October 2014): 1481–83. http://dx.doi.org/10.4028/www.scientific.net/amr.1044-1045.1481.

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Video-on-demand transmission system which is based on IP/DVB technology adopts C/S structure that is easy to operate and maintain for users to manage interactive commands and data transmission. Through interactive control on commands and media flow transmission by IP/DVB technology, it forms instant video-on-demand of transmission platform. The system is designed on the bases of multiple functions such as: response based on user command; analytical transmission of media stream; media stream receiving. Shaoxing radio is one of the digital cable TV pilots approved by the state, and has modified

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Sharafat, M. K., H. Ahmad, M. A. Alam, and M. M. Rahman. "Preparation of Highly Cross-linked Magnetic Polymer Composite Particles and Application in the Separation of Arsenic from Water." Rajshahi University Journal of Science and Engineering 44 (November 19, 2016): 67–74. http://dx.doi.org/10.3329/rujse.v44i0.30389.

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Iron oxide magnetic particles have become a promising research field in separation technology because of their easy separation by external magnetic field and can be applied for the removal of toxic metals from waste water. Highly cross-linked Fe3O4/P(S-DVB) particles were prepared in this research by suspension polymerization of styrene (S) and divinylbenzene (DVB) in presence of nanosized Fe3O4 particles. At first Fe3O4 nanoparticles were prepared by co-precipitation of Fe2+ and Fe3+ from their alkaline aqueous solution. To stabilize the magnetic particles, the surface of the particles was mo

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Armoogum, Sheeba, Vinaye Armoogum, and Jayprakash Gopaul. "The Development of a LAN for DVB-T Transmission and DVB-S Reception with Designed QAM Modulators and COFDM in the Island of Mauritius." International Journal of Wireless & Mobile Networks 3, no. 6 (2011): 71–90. http://dx.doi.org/10.5121/ijwmn.2011.3606.

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Jaksic, Branimir, Dragisa Miljkovic, Vladimir Maksimovic, Mile Petrovic, and Branko Gvozdic. "Satellite television transmission in the world - broadcasting systems and standards." Acta Scientiarum. Technology 42 (February 28, 2020): e44957. http://dx.doi.org/10.4025/actascitechnol.v42i1.44957.

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This paper considers the characteristics of satellite television transmission in the world. An overview of the development of satellite television is given through the following characteristics: broadcasting systems - analog and digital (SDTV, HDTV, UHDTV), frequency band (C, Ku, Ka), broadcasting standards (DVB-S, DVB-S2, DigiCipher, DSS), as well as the availability of TV services Free-To-Air TV (FTA) and PAY TV. All of these characteristics were considered both at the global and at the regional level: North America, South America, Europe, Africa, Russia, Asia, and Australia. The gathered da

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29

Barratt, K. A., P. Coulton, and B. Honary. "Defining performance limits for turbo-code assisted synchronization in DVB-S systems." IEEE Transactions on Broadcasting 47, no. 4 (2001): 348–56. http://dx.doi.org/10.1109/11.979372.

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Courville, N., H. Bischl, and Jingdi Zeng. "Critical issues of onboard switching in DVB-S/RCS broadband satellite networks." IEEE Wireless Communications 12, no. 5 (2005): 28–36. http://dx.doi.org/10.1109/mwc.2005.1522101.

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Coutinho, Fernanda M. B., Luciana da Cunha, and Ailton S. Gomes. "Suportes poliméricos para catalisadores sulfônicos: síntese e caracterização." Polímeros 14, no. 1 (2004): 31–37. http://dx.doi.org/10.1590/s0104-14282004000100011.

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Suportes poliméricos foram sintetizados por meio da copolimerização de estireno (S) e divinilbenzeno (DVB) em suspensão aquosa na presença de misturas diluentes constituídas por tolueno e n-heptano, solventes esses considerados como bom e mau para o polímero respectivamente, em composições variadas. Foram usados dois teores de DVB (60 e 80%) e dois graus de diluição (100 e 200%). Os suportes foram caracterizados no estado seco e no estado inchado e suas propriedades foram relacionadas com os parâmetros de síntese. No estado seco, os copolímeros foram analisados quanto à densidade aparente, à á

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Xie, TianJiao, Bo Li, Mao Yang, and Zhongjiang Yan. "LDPC Decoder of High Speed Multi-Rate DVB-S2 Based on FPGA." Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University 37, no. 2 (2019): 299–307. http://dx.doi.org/10.1051/jnwpu/20193720299.

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A multi-rate LDPC decoder architecture for DVB-S2 codes based on FPGA is proposed. Through elementary transformation on the parity check matrices of DVB-S2 LDPC codes, a new matrix whose left is a QC sub-matrix and right is Transformation of Staircase lower triangular (TST) sub-matrix is obtained. The QC and TST are designed separately, therefore the successful experience of the most popular Quasi-Cyclic (QC) LDPC decoder architecture can be drawn on. While for TST sub-matrix, the variable nodes updating only need to be considered and the check nodes updating is realized compatibility with QC

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Jin, Wei, Xiao-de Lü, and Mao-sheng Xiang. "Ambiguity Function and Resolution Characteristic Analysis of DVB-S Signal for Passive Radar." JOURNAL OF RADARS 1, no. 4 (2013): 380–86. http://dx.doi.org/10.3724/sp.j.1300.2012.20077.

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Xilouris, G., A. Kourtis, and G. Stefanou. "A mesh topology DVB-S network architecture for node interconnection, featuring QoS capabilities." Computer Networks 48, no. 1 (2005): 45–56. http://dx.doi.org/10.1016/j.comnet.2004.10.005.

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Liu, Xiao Long, Yu Hua, Yu Xiang, and Hui Qing Liu. "Method of Common View Based on Digital Satellite Television." Applied Mechanics and Materials 721 (December 2014): 666–69. http://dx.doi.org/10.4028/www.scientific.net/amm.721.666.

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This paper apply satellite digital television signal for common view based on the DVB-S standard. By choosing some information from the signal as timing signal, we can get the arriving time of timing signal on local time scale. At last, we use the arriving time and some necessary correct massage to get the time difference between two locations.

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Cominetti, M., and A. Morello. "Digital video broadcasting over satellite (DVB-S): a system for broadcasting and contribution applications." International Journal of Satellite Communications 18, no. 6 (2000): 393–410. http://dx.doi.org/10.1002/1099-1247(200011/12)18:6<393::aid-sat664>3.0.co;2-k.

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Girlando, G., S. A. Smerzi, T. Copani, and G. Palmisano. "A monolithic 12-GHz heterodyne receiver for DVB-S applications in silicon bipolar technology." IEEE Transactions on Microwave Theory and Techniques 53, no. 3 (2005): 952–59. http://dx.doi.org/10.1109/tmtt.2004.842484.

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Jin, Wei, Xiaode Lü, and Maosheng Xiang. "Research on performance influence of direct-path signal for DVB-S based passive radar." Journal of Electronics (China) 30, no. 2 (2013): 111–17. http://dx.doi.org/10.1007/s11767-013-2171-x.

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Teixeira, Viviane G., Fernanda M. B. Coutinho, and Ailton S. Gomes. "Síntese e caracterização de copolímeros de estireno e divinilbenzeno clorometilados." Polímeros 14, no. 4 (2004): 267–73. http://dx.doi.org/10.1590/s0104-14282004000400013.

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A reação de clorometilação de copolímeros de estireno e divinilbenzeno (S-DVB) em presença de HCl, formaldeído e cloreto de zinco foi estudada em meios aquoso e orgânico. O copolímero S-DVB foi, primeiramente, sintetizado por polimerização em suspensão e caracterizado quanto às suas propriedades porosas. Em meio aquoso, o copolímero foi clorometilado borbulhando-se HCl na mistura de solução aquosa de formaldeído a 37% (formalina 37%) e solução aquosa de cloreto de zinco (catalisador). Em meio orgânico (1,2-dicloroetano), foram usados HCl (borbulhado na solução reacional), paraformaldeído e clo

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Rosado-Sanz, Javier, María-Pilar Jarabo-Amores, Jean-Yves Dauvignac, David Mata-Moya, Jérôme Lanteri, and Claire Migliaccio. "Design and Validation of a Reflectarray Antenna with Optimized Beam for Ground Target Monitoring with a DVB-S-Based Passive Radar." Sensors 21, no. 16 (2021): 5263. http://dx.doi.org/10.3390/s21165263.

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A reflectarray antenna with an optimized sectorial beam is designed for the surveillance channel of a DVB-S-based passive radar (PR). The employment of satellite illuminators requires a high gain antenna to counteract the losses due to the great distance from the transmitter, but without forgetting a beamwidth wide enough to provide angular coverage. A method based on optimizing the position of several contiguous beams is proposed to achieve the required sectorial pattern. Different reflectarray elements are designed to achieve S-curves with smooth slopes and covering all the required phases (

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Rezende, Simone M. de, Bluma G. Soares, Fernanda M. B. Coutinho, et al. "Aplicação de resinas sulfônicas como catalisadores em reações de transesterificação de óleos vegetais." Polímeros 15, no. 3 (2005): 186–92. http://dx.doi.org/10.1590/s0104-14282005000300008.

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Diferentes suportes poliméricos à base de estireno (S) e divinilbenzeno (DVB) foram sintetizados e suas morfologias caracterizadas por microscopia óptica e eletrônica de varredura. Foram preparados e caracterizados catalisadores sulfônicos a partir desses suportes e suas atividades catalíticas foram avaliadas na transesterificação de óleo vegetal com metanol. Os resultados obtidos com esses catalisadores foram comparados com os produzidos com uma resina sulfônica comercial. Verificou-se que os catalisadores sintetizados neste trabalho apresentaram desempenhos próximos ao da resina comercial.

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Yang, Chin-Lung. "Design of a CMOS LNA with an integrated on-chip filter for DVB-S applications." Microwave and Optical Technology Letters 51, no. 6 (2009): 1580–84. http://dx.doi.org/10.1002/mop.24355.

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Hockbarth, K. D., R. Ortiz, and C. Diaz. "Global communications newsletter - Services and their customization for a DVB-S network (The reposit project)." IEEE Communications Magazine 42, no. 7 (2004): 21–22. http://dx.doi.org/10.1109/mcom.2004.1316519.

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Bogoczek, Romuald, Elżbieta Kociołek-Balawejder, Ewa Stanisławska, and Agnieszka Żabska. "Using macroporous N-chlorosulfonamide S/DVB copolymer as an aid to iron removal from water." Pure and Applied Chemistry 79, no. 9 (2007): 1491–503. http://dx.doi.org/10.1351/pac200779091491.

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The de-ironing of water is a basic stage in water-treating technology. Consequently, the oxidation of easily soluble Fe(II) to poorly soluble Fe(III) compounds is indispensible. In order to oxidize Fe(II) ions to Fe(III), a macromolecular and macroporous product in bead form was used: polystyrene cross-linked by divinylbenzene, which contains pendant N-chlorosulfonamide groups in both the sodium and hydrogen forms. To assist the process of removing residual iron from water, this polymer - a macromolecular analog of Chloramine T, containing more than 4.0 mequiv of active chlorine/g - was prepar

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Fila, Karolina, and Beata Podkościelna. "Synthesis and characterization of linear and crosslinked polymers with the addition of DMSPS." Annales Universitatis Mariae Curie-Sklodowska, sectio AA – Chemia 73, no. 1 (2019): 1. http://dx.doi.org/10.17951/aa.2018.73.1.1-10.

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<p>The aim of this research was the synthesis of polymers with the addition of S,S'-thiodi-4,1-phenylene bis(thiomethacrylate) (DMSPS) by bulk polymerization. Styrene (St), divinylbenzene (DVB) and ethylene glycol dimethacrylate (EGDMA) were used for the copolymerization as main monomers. The chemical structures of sulfur-containing polymers were confirmed by the spectroscopic analysis (ATR/FT-IR). In order to determine the impact of the sulfur derivative (DMSPS) addition on thermal properties of the obtained copolymers, differential scanning calorimetry (DSC) was performed. The hardness

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Nicacio, Eurico, and Regiane Dalazoana. "A NEW ESTIMATE FOR BRAZILIAN VERTICAL DATA OFFSET BASED ON GLOBAL GEOPOTENTIAL MODELS AND HEIGHT DETERMINATIONS THROUGH RELATIVE APPROACH." Boletim de Ciências Geodésicas 24, no. 3 (2018): 335–50. http://dx.doi.org/10.1590/s1982-21702018000300022.

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Abstract This paper aims to present a new estimate for the vertical offset between both Brazilian vertical data: DVB-I, in Imbituba-SC, and DVB-S, in Santana-AP. Brazilian Fundamental Altimetric Network (BFAN) currently has over 69000 stations with known normal-orthometric heights; 472 of these stations are connected to a tide gauge located in Santana-AP, at the North portion of Brazil, and the other ones are connected to a tide gauge located in Imbituba-SC, at the South portion of Brazil and considered Brazilian's main vertical reference. The vertical offset estimate is based on comparisons b

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Fimic, Nemanja, Ilija Basicevic, and Nikola Teslic. "Reducing Channel Change Time by System Architecture Changes in DVB-S/C/T Set Top Boxes." IEEE Transactions on Consumer Electronics 65, no. 3 (2019): 312–21. http://dx.doi.org/10.1109/tce.2019.2913361.

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Palomo, B., F. Muñoz, R. G. Carvajal, J. R. Garcia та F. Marquez. "An 8-bit 19 MS/s low-power 0.35 μm CMOS pipelined ADC for DVB-H". Integration 45, № 2 (2012): 222–27. http://dx.doi.org/10.1016/j.vlsi.2011.10.003.

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Schnick, O., and W. Mathis. "Realisierung eines verzerrungsarmen Open-Loop Klasse-D Audio-Verstärkers mit SB-ZePoC." Advances in Radio Science 5 (June 13, 2007): 225–30. http://dx.doi.org/10.5194/ars-5-225-2007.

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Abstract. In den letzten Jahren hat die Entwicklung von Klasse-D Verstärkern für Audio-Anwendungen ein vermehrtes Interesse auf sich gezogen. Eine Motivation hierfür liegt in der mit dieser Technik extrem hohen erzielbaren Effizienz von über 90%. Die Signale, die Klasse-D Verstärker steuern, sind binär. Immer mehr Audio-Signale werden entweder digital gespeichert (CD, DVD, MP3) oder digital übermittelt (Internet, DRM, DAB, DVB-T, DVB-S, GMS, UMTS), weshalb eine direkte Umsetzung dieser Daten in ein binäres Steuersignal ohne vorherige konventionelle D/A-Wandlung erstrebenswert erscheint. Die kl

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Silvianti, Fitrilia, Dwi Siswanta, Nurul Hidayat Aprilita, and Agung Abadi Kiswandono. "ADSORPTION CHARACTERISTIC OF IRON ONTO POLY[EUGENOL-CO-(DIVINYL BENZENE)] FROM AQUEOUS SOLUTION." Jurnal Natural 17, no. 2 (2017): 108. http://dx.doi.org/10.24815/jn.v17i2.8076.

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A study on the adsorption characteristic of Iron onto Poly[eugenol-co-(divinyl benzene)] (EDVB) from aqueous solution has been conducted. EDVB was produced and characterized by using FTIR spectroscopy. The adsorption was studied by a batch method by considering the factors affecting the adsorption such as initial metal ion concentration, adsorption selectivity, and mechanism of adsorption using a sequential desorption method. The adsorption of Iron onto EDVB followed a pseudo-2 order kinetics model with the rate constant of 0,144 L2 mmol-1 min-1. The adsorption isotherm was studied with Tempki

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