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Добірка наукової літератури з теми "Lateral source"

Автор: Grafiati

Опубліковано: 19 липня 2022

Оновлено: 8 серпня 2022

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Статті в журналах з теми "Lateral source"

Owen, Thomas E., and Edgar C. Schroeder. "Asymmetrical lateral force seismic source transducer." Journal of the Acoustical Society of America 83, no. 4 (April 1988): 1713. http://dx.doi.org/10.1121/1.395859.

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Yardley, G. S., and R. E. Swarbrick. "Lateral transfer: a source of additional overpressure?" Marine and Petroleum Geology 17, no. 4 (April 2000): 523–37. http://dx.doi.org/10.1016/s0264-8172(00)00007-6.

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Grzebyk, Tomasz, Piotr Szyszka, Anna Gorecka-Drzazga, and Jan A. Dziuban. "Lateral MEMS-Type Field Emission Electron Source." IEEE Transactions on Electron Devices 63, no. 2 (February 2016): 809–13. http://dx.doi.org/10.1109/ted.2015.2506778.

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Linnarsson, Margareta K., Michl Kaiser, Rickard Liljedahl, Valdas Jokubavicius, Yi Yu Ou, Peter J. Wellmann, Hai Yan Ou, and Mikael Syväjärvi. "Lateral Boron Distribution in Polycrystalline SiC Source Materials." Materials Science Forum 740-742 (January 2013): 397–400. http://dx.doi.org/10.4028/www.scientific.net/msf.740-742.397.

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Polycrystalline SiC containing boron and nitrogen are used in growth of fluorescent SiC for white LEDs. Two types of doped polycrystalline SiC have been studied in detail with secondary ion mass spectrometry: sintered SiC and poly-SiC prepared by sublimation in a physical vapor transport setup. The materials are co-doped materials with nitrogen and boron to a concentration of 1x1018 cm-3 and 1x1019 cm-3, respectively. Depth profiles as well as ion images have been recorded. According to ocular inspection, the analyzed poly-SiC consists mainly of 4H-SiC and 6H-SiC grains. In these grains, the boron concentration is higher and the nitrogen concentration is lower in the 6H-SiC compared to the 4H-SiC polytype. No inter-diffusion between grains is observed.

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Li, Peisheng, Xiaolong Lian, Yue Chen, Ying Zhang, Wandong Zhao, and Chunyang Ma. "Multiple-relaxation-time lattice Boltzmann simulation of natural convection with multiple heat sources in a rectangular cavity." Canadian Journal of Physics 98, no. 4 (April 2020): 332–43. http://dx.doi.org/10.1139/cjp-2019-0055.

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Natural convection and heat transfer in a square cavity with multiple heat sources was investigated through a multiple-relaxation-time (MRT) collision model and lattice Boltzmann method (LBM) in the current work. The MRT-LBM model was verified by a former experiment and numerical findings with different Ra numbers from 103 to 105, which proved the MRT-LBM model is effective to handle the flow and transfer. The heat transfer that developed inside the cavity was analyzed under different width, height, and lateral offset of heat source in this paper. Moreover, the change of spacing between two symmetrically distributed heat sources was discussed. The results showed that the heat exchange efficiency was augmented by increasing width, height, and spacing of the heater, but it was reduced by increasing lateral offset. Specifically, the Nusselt number of the upper wall decreased by increasing height of heat source, and the left and right walls showed better heat exchange efficiency by increasing height. Additionally, the lateral position had a notable influence on the left wall surface of the heat source, and the optimum heat exchange efficiency of the heat source’s left wall existed in the condition of small lateral offset.

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Dimkić, M., M. Pušić, V. Obradović, and D. Djurić. "Several natural indicators of radial well ageing at the Belgrade Groundwater Source, part 2." Water Science and Technology 63, no. 11 (June 1, 2011): 2567–74. http://dx.doi.org/10.2166/wst.2011.564.

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From 2005 to 2009, research was conducted at the Belgrade Groundwater Source (BGWS) to investigate the process of clogging of wells with horizontal lateral screens (radial wells). The clogging process was monitored via the kinetics of the increase in hydraulic losses at the laterals. A correlation of this process with the redox potential, the iron concentration in water, and the microbial population growth at the laterals and in their immediate vicinity was established. Research outcomes are presented here from a study of five wells where laterals were replaced between 2006 and 2008. Derived dependencies were later used to define the preferred approach to the installation and maintenance of well laterals at the BGWS. Results contribute to the study of well ageing caused by biochemical clogging.

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Pierrehumbert, R. T. "Lateral mixing as a source of subtropical water vapor." Geophysical Research Letters 25, no. 2 (January 15, 1998): 151–54. http://dx.doi.org/10.1029/97gl03563.

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Ma, M., K. G. Stephens, B. J. Sealy, and J. E. Mynard. "A double hot cathode lateral extraction Penning ion source." Review of Scientific Instruments 63, no. 4 (April 1992): 2475–77. http://dx.doi.org/10.1063/1.1142916.

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Curcic-Blake, B. "Source location encoding in the fish lateral line canal." Journal of Experimental Biology 209, no. 8 (April 15, 2006): 1548–59. http://dx.doi.org/10.1242/jeb.02140.

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Kwong, M. Y., R. Kasnavi, P. Griffin, J. D. Plummer, and R. W. Dutton. "Impact of lateral source/drain abruptness on device performance." IEEE Transactions on Electron Devices 49, no. 11 (November 2002): 1882–90. http://dx.doi.org/10.1109/ted.2002.806790.

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Більше джерел

Дисертації з теми "Lateral source"

MacInnes, Scott Charles. "Lateral effects in controlled source audiomagnetotellurics." Diss., The University of Arizona, 1988. http://hdl.handle.net/10150/184322.

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A popular electrical exploration method is controlled source audiomagnetotellurics (CSAMT). Although the CSAMT method has had practical sucess, the theory used in CSAMT interpretation remains limited. The controlled source in CSAMT is a grounded electric dipole placed as far as is practical from the survey area. When the source-receiver separation is large enough, source fields can be adequately modeled by a single plane wave and conventional magnetotelluric interpretation methods can be used. Quite often however, data collected at lower frequencies can not be interpreted with magnetotelluric algorithms. If the electrical distance between source and receiver is too small, mathematical models must explicitly include the dipolar nature of the source fields to accurately model the data. Models which include a dipole source are limited. Most interpretation of CSAMT data is based upon horizontally layered models. In this dissertation, the model of plane layers excited by an arbitrary source is extended to include the effects of lateral changes in layer thickness. The method developed for modeling undulating interfaces mimics nature more accurately than plane-layered models, while preserving the utility of quick evaluation and insight lost to more general numerical methods. While the main emphasis here is on CSAMT applications, the theoretical results are valid for any source type. Topographic effects are modeled for plane wave and magnetic dipole sources. The effects of relief in basement topography on the response of a horizontal loop-loop system are computed and compared with scale-model measurements. CSAMT field data which can not be adequately explained by plane-layered models are analyzed using models with variable layer thickness. The correctness of the theoretical development is verified by comparison with physical measurements. The utility of the theory is illustrated by application to problems which can not be explained by plane-layered models.

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Hsiao, Tzu-Kan. "A single-photon source based on a lateral n-i-p junction driven by a surface acoustic wave." Thesis, University of Cambridge, 2018. https://www.repository.cam.ac.uk/handle/1810/283189.

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Single-photon sources are essential building blocks in quantum photonic networks, where quantum-mechanical properties of photons are utilised to achieve quantum technologies such as quantum cryptography and quantum computing. In this thesis, a single-photon source driven by a surface acoustic wave (SAW) is developed and characterised. This single-photon source is based on a SAW-driven lateral n-i-p junction in a GaAs quantum-well structure. On this device, the lateral n-i-p junction is formed by gate-induced electrons and holes in two adjacent regions. The SAW potential minima create dynamic quantum dots in a 1D channel between these two regions, and are able to transport single electrons to the region of holes along the channel. Single-photon emission can therefore be generated as these electrons consecutively recombine with holes. After characterisation and optimisation in four batches of devices, clear SAW-driven charge transport and the corresponding electroluminescence (EL) can be observed on an optimised SAW-driven n-i-p junction. Time-resolved measurements have been carried out to study the dynamics of SAW-driven electrons. Time-resolved EL signals indicate that a packet of electrons is transported to the region of holes in each SAW minimum. In addition, the carrier lifetime of SAW-driven electrons in the region of holes is shown to be $\sim 100$ ps, which is much shorter than the SAW period of $860$ ps. Hence, it is promising to observe single-photon emission in the optimised device. In order to test single-photon emission, a Hanbury Brown-Twiss experimental setup has been employed to record an autocorrelation histogram of the SAW-driven EL signal at the single-electron regime. Suppression of autocorrelation coincidences at time delay $\Delta t = 0$ is evidence of photon antibunching. By fitting theoretical functions describing the SAW-driven EL signal, it is found that the second-order correlation function shows $g^{(2)}(0) = 0.39 \pm 0.05$, which is lower than the common criterion for a single-photon source $g^{(2)}(0) < 0.5$. Moreover, theoretical calculation and simulation suggest that, if a constant background signal can be filtered out, $\sim 80 \%$ of the SAW-driven EL is single-photon emission.

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Bloom, Barthe [Verfasser], Holger [Gutachter] Diessel, Volker [Gutachter] Gast, and Steffen [Gutachter] Höder. "Lateral relations & multiple source constructions : the Old English subject relative clause and the Norwegian han mannen-construction / Barthe Bloom ; Gutachter: Holger Diessel, Volker Gast, Steffen Höder." Jena : Friedrich-Schiller-Universität Jena, 2021. http://d-nb.info/1238142249/34.

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Rios, Mora Juan Sebastian. "Optimisation de la gestion de l’impact des polluants gazeux du sol sur la qualité de l’air intérieur." Thesis, La Rochelle, 2021. http://www.theses.fr/2021LAROS035.

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Les sites pollués (sol ou eaux souterraines) représentent un potentiel de risque pour la santé humaine et l’environnement. Il existe des outils d’aide à la gestion, en complément des mesures in-situ, qui permettent d’estimer rapidement et à moindre coût les risques sanitaires associés à l’exposition des polluants gazeux du sol dans les espaces intérieurs afin d’établir des mesures de prévention et/ou correction. Cependant, et malgré leur intérêt, il a été montré dans la littérature qu’il existe des différences importantes entre les concentrations intérieures mesurées et les estimations des outils existants. Ces incertitudes reposent principalement sur trois aspects : une mauvaise caractérisation du site, une modélisation incomplète des voies et mécanismes de transfert, ou bien du fait de négliger l’influence de certains paramètres sur le transfert. Par exemple, le fait de négliger la latéralité de la source reste une explication plausible des limites des modèles classiques de transfert. Les auteurs conviennent que la migration latérale joue un rôle important sur l’atténuation de la concentration intérieure en polluant, contrairement aux scénarios de source homogène ou continue, où les vapeurs migrent uniquement de manière verticale vers le bâtiment. Ainsi, lorsque la source est latéralement décalée vis-à-vis du bâtiment, les vapeurs vont migrer préférentiellement vers l’atmosphère et moins vers le bâtiment générant une atténuation plus importante de la concentration intérieure. Dans ce contexte, l’objectif principal de ces travaux de thèse est la contribution à l’amélioration des outils d’aide à la gestion afin d’élargir leur plage d’application. Pour ce faire, des nouveaux modèles ont été développés permettant de tenir compte de la latéralité de la source dans l’estimation de la concentration intérieure en polluant. Le développement de ces modèles est réalisé à partir de l’expérimentation numérique et l’analyse adimensionnelle sur la base des outils existants (modèles semi-empiriques construits en considérant une source continue). La combinaison de ces deux approches permet d’une part, de garder la capacité des modèles source continue de tenir compte des propriétés physiques du sol (perméabilité, coefficient de diffusion, …) et des caractéristiques du bâtiment (typologie de soubassement, dépression, volume, …), et d’une autre part, de mieux préciser la position de la source dans le sol en considérant l’influence de sa latéralité dans les estimations. Ces nouveaux modèles ont été issus d’une analyse comparative permettant de vérifier la cohérence et la précision des estimations vis-à-vis d’un modèle numérique (CFD), de données expérimentales et de modèles existants dans la littérature. Finalement, ces expressions ont été intégrées dans un code de ventilation (MATHIS-QAI) permettant de mieux préciser les caractéristiques des environnements intérieurs (système de ventilation, perméabilité à l’air de l’enveloppe, volume du bâtiment, …) et de réaliser des estimations des niveaux de concentration en fonction des variations temporelles (vitesse du vent, température extérieure, …) au cours du temps. À partir d’une étude paramétrique il a été montré que malgré l’impact non-négligeable des caractéristiques du bâtiment, l’influence de la latéralité de la source sur l’atténuation de la concentration intérieure en polluant reste prédominante (atténuation de plusieurs ordres de grandeur quand la source est décalée latéralement du bâtiment en comparaison à une source continue). Cependant, préciser les caractéristiques du bâtiment (soubassement, système de ventilation, perméabilité à l’air de l’enveloppe,…), ainsi que les conditions météorologiques uniques de chaque projet de construction, permet d’augmenter la précision des estimations en évitant la mise en œuvre de solutions extrêmes ou bien encore, de mesures inadaptées
Polluted sites and most precisely vapor intrusion represents a potential risk for human health and its environment. Various screening-level and analytical models have been proposed in order to evaluate vapor intrusion and provide assessment tools for exposure risk. However, some in situ investigations show significant differences between predicted and measured indoor concentrations leading eventually to misleading conclusions and inappropriate solution implementations. These uncertainties are mainly associated with a poor characterization of the site, an incomplete modeling of transfer pathways and mechanisms, or by neglecting certain influencing parameters on this transfer. For example, ignoring the lateral source/building separation may serve as possible explanation of the uncertainties presented by the conventional models based on a homogeneous source distribution assumption. The authors agree that lateral migration plays an important role in the attenuation of the indoor concentration. In homogeneous or continuous source scenarios vapors may migrate mainly vertically towards the building. However, lateral source may promote lateral migration to the atmosphere and less into the building generating a greater attenuation of the indoor concentration. In this context, the main objective of this thesis work is to contribute to the improvement of the assessment and management risk tools in order to improve the accuracy of their estimations and increase their range of application. To do this, new vapor intrusion models are developed considering the lateral source/building separation. These models are built on a numerical experimentation and dimensionless analysis based on existing models (semi-empirical models considering a homogeneous source distribution). The combination of these two approaches allows, on the one hand, to maintain the aptitude of the existing models to consider the physical properties of the soil (permeability, diffusion coefficient, …) and the characteristics of the building (type of construction, building depression, volume,…), and on the other hand, to better precise the position of the source in the soil taking into account the influence of the lateral source/building separation in the estimations. From a comparative analysis, the accuracy of these new expressions is verified comparing to the proposed numerical model (CFD), experimental data and existing models in the literature. Finally, the proposed expressions were coupled with a ventilation code (MATHIS-QAI) allowing to better specify indoor characteristics (ventilation system, air permeability of the envelope, volume of the building, …) and estimate indoor air concentration levels as a function of environmental variations (wind speed, outside temperature, …) over time. From a parametric study it was shown that despite the significant impact of the characteristics of the building, the influence of the lateral source/building separation remains predominant on the attenuation of the indoor concentration (attenuation of several orders of magnitude when the source is laterally offset of the building compared to a homogeneous source). However, specifying the characteristics of the building (construction type, ventilation system, air permeability, …) and weather conditions may increase the accuracy of the estimation avoiding the implementation of extreme solutions or insufficient actions

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Smith, Stuart James. "Lateral quantum well diodes for single photon sources." Thesis, University of Bristol, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.446188.

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Slađana, Škobić. "Могућност гајења иђирота (Acorus calamus L.) у циљу смањења притиска на природну популацију". Phd thesis, Univerzitet u Novom Sadu, Poljoprivredni fakultet u Novom Sadu, 2016. https://www.cris.uns.ac.rs/record.jsf?recordId=101576&source=NDLTD&language=en.

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Acorus calamus L. је вишегодишња зељаста биљка влажних подручја, чија су лековита својства одавно позната. Дрогу иђирота чини ризом који се употребљава као чај, прах, сок, гел, уље или крема. Због прекомерне експлоатације и високог степена угрожености ове дивље лековите биљне врсте у Србији је уведена забрана његовог сакупљања из природе. Да би се задовољила повећана потражња од стране индустрија које га користе, гајење иђирота се намеће као једно од најпрагматичнијих решења. За потребе утврђивање начина гајења, прво се приступило истраживању услова успевања и варирање својстава иђирота са пет локалитета природних станишта: Обедска бара, Делиблатска пешчара, Засавица, Раковац и Дубовац. Потом је заснован двогодишњи пољски оглед на ком је испитиван утицај примене основних агротехничких мера, односно густине садње и ђубрења азотом, на својства биљака. Оглед је постављен 2013. године, на подручју засеока Ћумуране у насељу Рипањ. Код биљка са природних станишта и са огледног поља праћена су следећа својства: висина биљака, дужина ризома, број и дужина бочних грана на ризому, број пупољака на ризому и бочним гранама, број нодуса на ризому и бочним гранама, проценат суве материје ризома, маса свежег и сувог ризома, однос масе свежег и сувог ризома. Код гајених биљака праћен је и принос свежег и сувог ризома. Код свих узорака иђирота испитиван је садржај и састав етарског уља из ризома. Идентификоване су, такође, најзаступљеније компоненте и утврђен је садржаја β-азарона. За утврђивање нивоа плоидије популација из Србије рађено је пребројавање хромозома. Испитивањем биљака са природних станишта, констатовано је да на већину њихових морфолошких одлика, локалитет није имао утицаја. Утицај локалитета испољен је само на: број нодуса на ризому (највећи је био у Дубовцу - 58 а најмањи на Обедској бари - 15), проценат суве материје (највећи је био у Раковцу - 50,2%, а најмањи на Делиблатској пешчари - 37,9%) и однос масе свежег и сувог ризома (највећи је на Делиблатској пешчари - 2,64, а најмањи у Раковцу - 1,90). У пољском огледу добијени су следећи резултати: висина биљака је била највећа при најмањој густини усева (35000 биљака/ha) и најмањој дози азота (60 kg/ha) дужина ризома, као и број и дужина њихових бочних грана су највећи при средњој густини садње (48000 биљака/ha) и најмањој дози азота; број пупољака на ризому има највећу вредност при најмањој густини садње и најмањој дози азота. Број пупољака прве бочне гране је био највећи на највећој густини садње (62000 биљака/ha) и при најмањој дози азота, а број нодуса на ризому није зависио од густине садње, као ни од доза ђубрења. Највећа маса свежег и сувог ризома остварена је при средњој густини садње (48000 биљака/ha) и најмањој (62000 биљака/ha) дози азота, док је проценат суве материје био највећи при највећој густини и најмањој дози азота (60 kg/ha). На однос масе свежег и сувог ризома утицај нису имали ни ђубрење ни густинасадње усева, док су приноси свежег и сувог ризома били највећи на највећој густини садње и при најмањој дози азота. Садржај етарског уља иђирота из природе није показао значајна одступања између локалитета. Садржај етарског уља ризома гајеног иђирота опадао је са порастом густине садње, док различите дозе азота нису утицале на ову особину. Максимална концентрација β-азарона у етарском уљу иђирота са природног станишта била је 17,07 % (локалитет Раковац), док је највећи садржај β-азарона код гајеног иђирота био 21,41 %. Повећана концентрација β- азарона се објашњава интензивнијим метаболизмом азота, због повећане количине из ђубрива. обијени резултати потврђују да је концентрација β-азарона у етарском уљу ризома иђирота слична резултатима из других земаља Европе. Бројањем хромозома утврђено је да иђирот припада триплоидном, европском варијетету Аcоrus cаlаmus vаr. cаlаmus.
Acorus calamus L. je višegodišnja zeljasta biljka vlažnih područja, čija su lekovita svojstva odavno poznata. Drogu iđirota čini rizom koji se upotrebljava kao čaj, prah, sok, gel, ulje ili krema. Zbog prekomerne eksploatacije i visokog stepena ugroženosti ove divlje lekovite biljne vrste u Srbiji je uvedena zabrana njegovog sakupljanja iz prirode. Da bi se zadovoljila povećana potražnja od strane industrija koje ga koriste, gajenje iđirota se nameće kao jedno od najpragmatičnijih rešenja. Za potrebe utvrđivanje načina gajenja, prvo se pristupilo istraživanju uslova uspevanja i variranje svojstava iđirota sa pet lokaliteta prirodnih staništa: Obedska bara, Deliblatska peščara, Zasavica, Rakovac i Dubovac. Potom je zasnovan dvogodišnji poljski ogled na kom je ispitivan uticaj primene osnovnih agrotehničkih mera, odnosno gustine sadnje i đubrenja azotom, na svojstva biljaka. Ogled je postavljen 2013. godine, na području zaseoka Ćumurane u naselju Ripanj. Kod biljka sa prirodnih staništa i sa oglednog polja praćena su sledeća svojstva: visina biljaka, dužina rizoma, broj i dužina bočnih grana na rizomu, broj pupoljaka na rizomu i bočnim granama, broj nodusa na rizomu i bočnim granama, procenat suve materije rizoma, masa svežeg i suvog rizoma, odnos mase svežeg i suvog rizoma. Kod gajenih biljaka praćen je i prinos svežeg i suvog rizoma. Kod svih uzoraka iđirota ispitivan je sadržaj i sastav etarskog ulja iz rizoma. Identifikovane su, takođe, najzastupljenije komponente i utvrđen je sadržaja β-azarona. Za utvrđivanje nivoa ploidije populacija iz Srbije rađeno je prebrojavanje hromozoma. Ispitivanjem biljaka sa prirodnih staništa, konstatovano je da na većinu njihovih morfoloških odlika, lokalitet nije imao uticaja. Uticaj lokaliteta ispoljen je samo na: broj nodusa na rizomu (najveći je bio u Dubovcu - 58 a najmanji na Obedskoj bari - 15), procenat suve materije (najveći je bio u Rakovcu - 50,2%, a najmanji na Deliblatskoj peščari - 37,9%) i odnos mase svežeg i suvog rizoma (najveći je na Deliblatskoj peščari - 2,64, a najmanji u Rakovcu - 1,90). U poljskom ogledu dobijeni su sledeći rezultati: visina biljaka je bila najveća pri najmanjoj gustini useva (35000 biljaka/ha) i najmanjoj dozi azota (60 kg/ha) dužina rizoma, kao i broj i dužina njihovih bočnih grana su najveći pri srednjoj gustini sadnje (48000 biljaka/ha) i najmanjoj dozi azota; broj pupoljaka na rizomu ima najveću vrednost pri najmanjoj gustini sadnje i najmanjoj dozi azota. Broj pupoljaka prve bočne grane je bio najveći na najvećoj gustini sadnje (62000 biljaka/ha) i pri najmanjoj dozi azota, a broj nodusa na rizomu nije zavisio od gustine sadnje, kao ni od doza đubrenja. Najveća masa svežeg i suvog rizoma ostvarena je pri srednjoj gustini sadnje (48000 biljaka/ha) i najmanjoj (62000 biljaka/ha) dozi azota, dok je procenat suve materije bio najveći pri najvećoj gustini i najmanjoj dozi azota (60 kg/ha). Na odnos mase svežeg i suvog rizoma uticaj nisu imali ni đubrenje ni gustinasadnje useva, dok su prinosi svežeg i suvog rizoma bili najveći na najvećoj gustini sadnje i pri najmanjoj dozi azota. Sadržaj etarskog ulja iđirota iz prirode nije pokazao značajna odstupanja između lokaliteta. Sadržaj etarskog ulja rizoma gajenog iđirota opadao je sa porastom gustine sadnje, dok različite doze azota nisu uticale na ovu osobinu. Maksimalna koncentracija β-azarona u etarskom ulju iđirota sa prirodnog staništa bila je 17,07 % (lokalitet Rakovac), dok je najveći sadržaj β-azarona kod gajenog iđirota bio 21,41 %. Povećana koncentracija β- azarona se objašnjava intenzivnijim metabolizmom azota, zbog povećane količine iz đubriva. obijeni rezultati potvrđuju da je koncentracija β-azarona u etarskom ulju rizoma iđirota slična rezultatima iz drugih zemalja Evrope. Brojanjem hromozoma utvrđeno je da iđirot pripada triploidnom, evropskom varijetetu Acorus calamus var. calamus.
Acorus calamus L. is a perennial herbaceous plant found in wet areas, whose medicinal properties have been long known. The drug of sweet flag is made from the rhizome which is used as tea, powder, juice, gel, oil or cream. Because of overexploitation and the high degree of endangerment of this wild medicinal plant species in Serbia collecting was banned. In order to meet the increased demand for this plant by industries that use it, cultivation of sweet flag is emerging as one of the most pragmatic solutions. For the purpose of determining the method for plant growth, the first approach was studying the growing conditions and the variation of properties of sweet flag from five natural habitats: Obedska pond, Deliblato Sands, Zasavica, Rakovac and Dubovac.After that a two-year field experiment was designed in which the effect of application of basic agrotechnical measures, i.e., different planting density and doses of nitrogen fertilization on the plants, was studied. The experiment was set up in 2013, in the area of the hamlet Ćumurana in the settlement Ripanj. In plants from natural habitats and the experiment, the following properties were measured: the height of the plants, the length of the rhizome, the number and length of lateral branches on the rhizome, the number of buds on the rhizome and lateral branches, the number of leaf scars on the rhizome and lateral branches, the percentage of dry matter of the rhizome, the mass of the fresh and the dry rhizome, the ratio of mass between the fresh and the dry rhizome. In the experiment with cultivated plants, the yield of the fresh and the dry rhizome was also measured. For all samples of sweet flag, the content and composition of the essential oil from the rhizome was measured. Also, the main components were identified and the content of the β-asarone was determined. For the purposes of identifying the ploidy, i.e., which varieties the sweet flag from Serbia belongs to, counting of chromosomes was done. By examining plants from natural habitats, it was noted that the site had no influence on the majority of morphological features of plants. The impact of the sites was manifested only in the number of leaf scars (the largest number was in Dubovac-58,0 and the smallest number was in Obedska pond-15,0), percentage of dry matter (the largest percentage was in Rakovac-50.2% and the smallest percentage was in Deliblato Sands-37,9 %) and the ratio of mass between a fresh and a dry rhizome (the largest ratio was in Deliblato Sands-2,6 and the smallest ratio was in Rakovac-2,2). In the field experiment, the following results were obtained: the height of the plants is the largest at the lowest planting density (35000 plants/ha) and lowest nitrogen dosage (60 kg/ha), the length of the rhizome, as well as number and length of lateral branches of the rhizome are largest at medium planting density (48000 plants/ha) and the lowest dosage of nitrogen (60 kg/ha), the number of buds on the rhizome has the highest value at the lowest planting density (35000 plants/ha) and the lowest dosage of nitrogen (60 kg/ha). The number of buds on the first lateral branch was largest at the largest planting density (62000 plants/ha) and the lowest dosage of nitrog (60 kg/ha) , and the number of leaf scars on the rhizome doesnot depend on the planting dosage or the dosage of fertilizing. The largest mass of the fresh and the dry rhizome is accomplished at medium planting density and the lowest dosage of nitrogen, while the percentage of dry matter was largest at the largest density and the lowest dosage of nitrogen. The fertilization and the crop density had no effect on the ratio of mass between the fresh and the dry rhizome, while the yields of the fresh and the dry rhizome were largest at the largest planting density and the lowest dosage of nitrogen. The content of essential oils of natural sweet flag showed no significant discrepancies between the sites. The content of essential oil of cultivated sweet flag rhizomes declined with the increase of planting density, while different nitrogen doses had no effect on this property. The maximum concentration of β-asarones in the essential oil of natural sweet flag was 17,07 % (Rakovac), while the largest content of β-asarones in cultivated sweet flag was 21,41 %. The larger concentration of β-asarones is explained through increased nitrogen metabolism, because of increased amounts of fertilizer. The results confirm that the concentration of β-asarone in the essential oil of sweet flag rhizomes is similar to the concentration of essential oil of sweet flag rhizomes from Europe. By counting the chromosomes it is established that sweet flag belongs to the triploid, European variety of Аcоrus cаlаmus vаr. cаlаmus.

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Daubin, Vincent, Emmanuelle Lerat, and Guy Perriere. "The source of laterally transferred genes in bacterial genomes." BioMed Central, 2003. http://hdl.handle.net/10150/610144.

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BACKGROUND:Laterally transferred genes have often been identified on the basis of compositional features that distinguish them from ancestral genes in the genome. These genes are usually A+T-rich, arguing either that there is a bias towards acquiring genes from donor organisms having low G+C contents or that genes acquired from organisms of similar genomic base compositions go undetected in these analyses.RESULTS:By examining the genome contents of closely related, fully sequenced bacteria, we uncovered genes confined to a single genome and examined the sequence features of these acquired genes. The analysis shows that few transfer events are overlooked by compositional analyses. Most observed lateral gene transfers do not correspond to free exchange of regular genes among bacterial genomes, but more probably represent the constituents of phages or other selfish elements.CONCLUSIONS:Although bacteria tend to acquire large amounts of DNA, the origin of these genes remains obscure. We have shown that contrary to what is often supposed, their composition cannot be explained by a previous genomic context. In contrast, these genes fit the description of recently described genes in lambdoid phages, named 'morons'. Therefore, results from genome content and compositional approaches to detect lateral transfers should not be cited as evidence for genetic exchange between distantly related bacteria.

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Badhwar, Shruti. "Laterally confined THz sources and graphene based THz optics." Thesis, University of Cambridge, 2014. https://www.repository.cam.ac.uk/handle/1810/246259.

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The region between the infrared and microwave region in the electromagnetic spectrum, the Terahertz (THz) gap, provides an exciting opportunity for future wireless communications as this band has been under utilised. This doctoral work takes a two-pronged approach into closing the THz gap with low-dimensional materials. The first attempt addresses the need for a compact THz source that can operate at room temperature. The second approach addresses the need to build optical elements such as filters and modulators in the THz spectrum. Terahertz quantum cascade lasers (THz QCLs) are one of the most compact, powerful sources of coherent radiation that bridge the terahertz gap. However, their cryogenic requirements for operation limit the scope of the applications. This is because of the electron-electron scattering and heating of the 2-dimensional free electron gas which leads to significant optical phonon scattering of the hot electrons. Theoretical studies in laterally confined QCL structures have predicted enhanced lifetime of the upper state through suppression of the non-radiative intersubband relaxation of carriers, which leads to lower threshold, and higher temperature performance. Lithographically defined vertical nanopillar arrays with electrostatic radius less than tens of nm offer a possible route to achieve lateral confinement, which can be integrated into QCL structures. A typical gain medium in a QCL consists of at least 100 repeat periods, with a thickness of 6-14 micron. For practical implementation of the top-down approach, restrictions are imposed by aspect ratios that can be achieved in present dry-etching systems. Typically, for sub-200 nm radius pillars, the thickness ranges from 1-3.5 micron. It is therefore necessary to work with THz QCLs based on 3-4 quantum well active regions, so as to maximise the number of repeat periods (hence gain) within an ultra-thin active region. After an introductory chapter, Chapter 2 presents a theoretical treatise on the realistic electrostatic potential in a lithographically defined nanopillar by scaling from a single quantum well (resonant tunnelling diode) to a THz QCL. Chapter 2 also discusses, the effect of lateral confinement on the intersubband states and the plasmonic mode in a THz QCL. One of the key experimental challenges in scaling down from QCLs to quantum-dot cascade lasers is the electrical injection into the nanopillars. This involves insulation and planarisation of the high aspect-ratio nanopillar arrays. Furthermore, the choice of the planarising layer is critical since it determines the loss of any optical mode. This experimental challenge is solved in Chapter 3. Chapter 4 presents the electro-optic performance of low-repeat period QCLs with an active region thickness that is less than 3.5 micron. Another topic of recent interest in the THz optics community is plasmonics in graphene. This is because the bound electromagnetic modes (plasmons) are tightly confined to the surface and can also be tuned with carrier concentration. Plasmonic resonance at terahertz frequencies can be achieved by gating graphene grown via chemical vapour deposition (CVD) to a high carrier concentration. THz time domain spectroscopy of such gated monolayer graphene shows resonance features around 1.6 THz superimposed on the Drude-like frequency response of graphene which may be related to the inherent poly-crystallinity of CVD graphene. Chapter 5 discusses these results, as an understanding of these features is necessary for the development of future THz optical elements based on CVD graphene. Chapter 5 finally describes how the gate tunability of THz transmission through graphene can be exploited to indirectly modulate a THz QCL. Chapter 6 presents ideas from this doctoral work, which can be developed in future to address the issues of enhanced temperature performance of THz QCLs and to realise realistic THz devices based on graphene.

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Hultin, Eriksson Elin. "Quantification of Terrestrial CO2 Sources to a Headwater Streamin a Boreal Forest Catchment." Thesis, Uppsala universitet, Institutionen för geovetenskaper, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-305435.

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Carbon Dioxide (CO2) emissions from streams are a significant component of the global carbon cycle.Terrestrial export of CO2 through runoff is increasingly recognized as a major source of CO2 in boreal headwater streams. However, the spatial and temporal distribution of soil water CO2 within theterrestrial landscape remains poorly quantified, contributing to large uncertainties about the origin of CO2 in headwater streams. The riparian zone (i.e. the area with fine sediments and organic rich soils closest to the stream) is accepted as a main contributor of organic carbon to streams, but its importanceas a source of CO2 is less evident. Here I evaluate the riparian zone as a main source by quantifying the contribution of lateral CO2 export from the riparian and hillslope zones to a headwater stream in a Swedish boreal catchment. Hourly measurements of CO2 concentration, conductivity, soil temperature and water table levels were taken in the riparian zone and the hillslope from June 2014 to October 2015. The riparian zone accounted for 58-89 % (August 2014 and March respectively) of the total terrestrial CO2 export from the slope to the stream. The hillslope, in turn, became a progressively larger source of CO2 to the stream during high flow events. To identify the drivers behind these zone-dependent and seasonal patterns in CO2 export, the CO2 production dissolved in the groundwater (groundwater- absorbed carbon) was estimated by taking the temporarily stored CO2 into account. The highest groundwater-absorbed carbon was observed during April and May (5.0 and 7.1 g C-CO2 m-2 month-1 respectively) which is the period with the highest discharge due to snow melt and the initiation of spring production. As such, conventional methods (gas chambers and the gradient method) may underestimate the soil respiration up to 50% during periods of high flow, as they exclude groundwater-absorbed carbon. CO2 consumption was observed in September 2014 and October 2015 (-0.2 and -0.7 g C-CO2 m-2 month-1 respectively) and may be explained by a major amount of the soil respiration being emitted instead of diluted in the groundwater during periods of low groundwater levels. It can be concludedthat, regardless of season, the riparian zone is a major source of CO2 to the headwater stream.
En signifikant mängd koldioxid (CO2) är lagrad i skog och marken. Marken i barrskogsregionernaförvarar en signifikant mängd CO2 där det partiella trycket av CO2 varierar mellan ~10 000 – 50 000 ppm i jämförelse med atmosfären (400 ppm). Mättnaden av CO2 gör att mycket avdunstar tillbaka till atmosfären. Dock absorberas en del CO2 av grundvattnet; vilket resulterar i en naturlig transport av CO2 vidare till ytvattnen där det kapillära nätverket av bäckar är största recipienten. Det är fortfarande oklart hur transporten av CO2 är distribuerad i ett vattenavrinningsområde vilket medför brister i förståelsen av en viktig processväg som kan komma att spela en större roll i framtidens kolkretslopp på grund av den globala uppvärmningen. Därför är en kvantifiering av olika områdens bidrag av CO2 till bäckarna nödvändig. Två betydande zoner i ett vattenavrinningsområde som troligen bidrar olika är: the riparian zone som är närmast bäcken och består av fina sediment med hög organisk halt och, the hillslope som är resterande område och består av grovkorniga jordar med låg organisk halt. Den förstnämnda misstänks transportera mer CO2 via grundvattnet på grund av dess närhet till bäcken, höga halter av CO2 och höga vattenmättnad men detta är ännu inte verifierat. Jag evaluerar the riparian zone som en viktig källa till CO2 i ett vattenavrinningsområde genom att kvantifiera transporten av CO2 från de två zonerna. För att förklara varför transporten varierar presenterar jag en ny modell (GVR) som beräknar den månatliga fluktuationen av den del av CO2-produktionen som absorberas i grundvattnet i the riparian zone. Mätningar av data utfördes i Västrabäcken, ett mindre vattenavrinningsområde i ett större vid namn Krycklan, i norra Sverige. En transekt av tre mätstationer (i bäcken, the riparian zone och the hillslope) installerades i den förmodade grundvattenströmningsriktningen. Resultaten visar på en hög produktion av CO2 under vårfloden (maj) då en hög grundvattenyta troligen absorberar en signifikant mängd CO2. Detta kan betyda att jordrespiration under våren underskattas då dagens mätmetoder är begränsade till mätningar i jorden av CO2 ovan grundvattenytan. Fortsatta studier rekommenderas där GVR-modellen och andra mätmetoder utförs samtidigt för att vidare utröna den kvantitativa underskattningen under perioder med hög grundvattenyta (speciellt under våren). Bidraget från the riparian zone till den totala laterala transporten av CO2 till bäcken under ett år varierar mellan 58-89 % och det månatliga transportmönstret kunde förklaras med resultaten från GVR-modellen. Resultaten verifierar att oberoende av säsong så är the riparian zone den huvudsakliga laterala koltransporten från landvegetationen; medan the hillslope procentuellt bidrar med mer CO2 under höga grundvattenflöden.

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Patel, Priyanka. "Development of new therapeutic approaches in mouse models of Amyotrophic Lateral Sclerosis." Doctoral thesis, Université Laval, 2015. http://hdl.handle.net/20.500.11794/25851.

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La sclérose latérale amyotrophique (SLA) est une pathologie neurodégénérative caractérisée par une perte progressive des neurones moteurs et par de l’atrophie musculaire menant à de la paralysie. Bien que plusieurs mécanismes pathologiques aient été élucidés, la SLA reste un mystère médical puisqu’il n’existe toujours pas de traitement efficace. Nous avons développé deux stratégies dans le but de traiter la SLA. La première stratégie fut de cibler la protéine SOD1 mal repliée (chapitre 2) et la deuxième consistait à traiter la neuroinflammation présente dans la maladie (chapitre 3). Dans le chapitre 2, nous avons tenté de diminuer le niveau de la protéine SOD1 mal repliée présent dans le système nerveux de souris transgéniques développant un phénotype de SLA. Pour ce faire, nous avons testé une nouvelle approche thérapeutique basée sur l’utilisation d’ « adeno-associated virus (AAV) ». Ce virus contient une séquence d’ADN qui encode pour un anticorps à chaîne unique variable (scFv). Cet anticorps est composé d’une des deux chaînes légères et lourdes de l’anticorps D3H5 ciblant de manière spécifique la protéine SOD1 mal repliée. Une injection intra-thécale unique de l’AAV encodant l’anticorps à chaîne unique dans des souris SOD1G93A repousse le début de la maladie et augmente la survie des souris de 28%. Nous avons démontré que la Withaferin A (WA), un inhibiteur du facteur NF-κB, diminuait le phénotype neurologique retrouvé chez le modèle de souris transgénique TDP-43. Donc, nous avons testé la Withaferin A sur deux autres lignées de souris transgéniques exprimant des mutations dans la protéine SOD1, soit la lignée de souris SOD1G93A et la lignée de souris SOD1G37R. L’effet bénéfique de la WA chez les souris SOD1G93A était accompagné d’un soulagement de la neuroinflammation, d’une diminution du niveau de protéine SOD1 mal repliée dans la moelle épinière et d’une baisse de la mortalité des neurones moteurs. En considérant ces résultats, l’utilisation d’AAV encodant un anticorps à chaîne unique contre la protéine SOD1 mal repliée ainsi que l’utilisation de Withaferin A devrait toutes les deux être considérées comme des approches pour traiter la SLA.
Amyotrophic lateral sclerosis (ALS) is a progressive neurodegenerative disease associated with motor neuron degeneration, muscle atrophy and paralysis. Although numerous pathological mechanisms have been elucidated, ALS still remains a medical mystery in the absence of any effective therapy. Riluzole is the only therapeutic drug approved for ALS with regard to prolonging survival. Here, we have developed two strategies for treatment of ALS, first targeting the misfolded SOD1 (chapter 2) and other targeting neuroinflammation (chapter 3). In chapter 2, we aimed to reduce the level of misfolded SOD1 species in the nervous system. We tested a novel therapeutic approach based on adeno-associated virus (AAV)-mediated tonic expression of a DNA construct encoding a secretable single chain fragment variable (scFv) antibody composed of the variable heavy and light chain regions of a monoclonal antibody (D3H5) binding specifically to misfolded SOD1. A single intrathecal injection of the adeno-associated virus encoding the single chain antibody in SOD1G93A mice delayed disease onset and extended the life span by up to 28%, in direct correlation with scFv titers in the spinal cord. Our second treatment strategy which is aimed to target neuroinflammation is based on previous reports from our lab where it has been shown that Withaferin A (WA), an inhibitor of NF-κB activity was efficient in reducing disease phenotype in TDP-43 transgenic mouse model of ALS. We tested WA in mice from two transgenic lines expressing different ALS-linked SOD1 mutations, SOD1G93A and SOD1G37R. The beneficial effects of WA in SOD1G93A mice model was accompanied by alleviation of neuroinflammation, decrease in level of misfolded SOD1 species in spinal cord, a reduction in loss of motor neurons, resulting in delayed disease progression and mortality. Based on these evidences, AAV encoding a secretable scFv against misfolded SOD1 and WA should be considered as a potential treatment for ALS.

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Книги з теми "Lateral source"

Parker, James N., and Philip M. Parker. Lateral epicondylitis: A medical dictionary, bibliography, and annotated research guide to Internet references. San Diego, CA: ICON Health Publications, 2004.

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Samuel, Pepys. Pepys's later diaries. Stroud: Sutton, 2006.

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Pepys, Samuel. Pepys's later diaries. Stroud: Sutton, 2004.

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dell'Aquila, Carlo. Per la storia di Laterza: Fonti archivistiche e documentarie. Galatina: Congedo, 1993.

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The Later Middle Ages: A sourcebook. Houndmills, Basingstoke, Hampshire: Palgrave Macmillan, 2011.

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The Third Industrial Revolution: How Lateral Power Is Transforming Energy, the Economy, and the World. New York, USA: Palgrave Macmillan, 2011.

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Beck, B. J. Mansvelt. The treatises of later Han: Their author, sources, contents, and place in Chinese historiography. Leiden: E.J. Brill, 1990.

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Chronicles, consuls, and coins: Historiography and history in the later Roman Empire. Farnham: Ashgate Variorum, 2011.

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Mendelsohn, John. Legalizing the Holocaust: The later phase, 1939-1943. Clark, N.J: Lawbook Exchange, 2010.

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Legalizing the Holocaust: The later phase, 1939-1943. Clark, NJ: Lawbook Exchange, 2009.

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Частини книг з теми "Lateral source"

King, Ronold W. P., Margaret Owens, and Tai Tsun Wu. "The Measurement of the Conductivity of the Oceanic Lithosphere with a Horizontal Antenna as the Source." In Lateral Electromagnetic Waves, 301–23. New York, NY: Springer New York, 1992. http://dx.doi.org/10.1007/978-1-4613-9174-6_8.

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Pu, Qin, Ketan Patel, and Ruijin Huang. "The Lateral Plate Mesoderm: A Novel Source of Skeletal Muscle." In Results and Problems in Cell Differentiation, 143–63. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-662-44608-9_7.

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Vanlalawmpuia, K., and Brinda Bhowmick. "Lateral Straggle Parameter and Its Impact on Hetero-Stacked Source Tunnel FET." In Lecture Notes in Electrical Engineering, 147–72. Singapore: Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-9124-9_8.

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Bleckmann, Horst, and Joachim Mogdans. "Neuronal Basis of Source Localisation and the Processing of Bulk Water Flow with the Fish Lateral Line." In Flow Sensing in Air and Water, 371–95. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-41446-6_15.

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Pšenčík, Ivan, and Telesson Neves Teles. "Point Source Radiation in Inhomogeneous Anisotropic Structures." In Seismic Waves in Laterally Inhomogeneous Media Part II, 591–623. Basel: Birkhäuser Basel, 1996. http://dx.doi.org/10.1007/978-3-0348-9049-6_10.

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Reames, Donald V. "A Turbulent History." In Solar Energetic Particles, 19–48. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-66402-2_2.

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AbstractLarge solar energetic-particle (SEP) events are clearly associated in time with eruptive phenomena on the Sun, but how? When large SEP events were first observed, flares were the only visible candidate, and diffusion theory was stretched to explain how the particles could spread through space, as widely as observed. The observation of coronal mass ejections (CMEs), and the wide, fast shock waves they can drive, provided better candidates later. Then small events were found with 1000-fold enhancements in 3He/4He that required a different kind of source—should we reconsider flares, or their open-field cousins, solar jets? The 3He-rich events were soon associated with the electron beams that produce type III radio bursts. It seems the radio astronomers knew of both SEP sources all along. Sometimes the distinction between the sources is blurred when shocks reaccelerate residual 3He-rich impulsive suprathermal ions. Eventually, however, we would even begin to measure the source-plasma temperature that helps to better distinguish the SEP sources.

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Ormrod, W. Mark. "Introduction: Debates and Sources." In Women and Parliament in Later Medieval England, 1–23. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-45220-9_1.

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Irion, G., and G. Müller. "Lateral Distribution and Sources of Sediment-Associated Heavy Metals in the North Sea." In Facets of Modern Biogeochemistry, 175–201. Berlin, Heidelberg: Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-642-73978-1_16.

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Ormrod, W. Mark, and Jonathan Mackman. "Resident Aliens in Later Medieval England: Sources, Contexts, and Debates." In Resident Aliens in Later Medieval England, 3–31. Turnhout: Brepols Publishers, 2017. http://dx.doi.org/10.1484/m.seuh-eb.5.114456.

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Jílek, Petr, and Vlastislav Červený. "Radiation Patterns of Point Sources Situated Close to Structural Interfaces and to the Earth’s Surface." In Seismic Waves in Laterally Inhomogeneous Media, 175–225. Basel: Birkhäuser Basel, 1996. http://dx.doi.org/10.1007/978-3-0348-9213-1_9.

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Тези доповідей конференцій з теми "Lateral source"

Grzebyk, Tomasz, Piotr Szyszka, Anna Gorecka-Drzazga, and Jan A. Dziuban. "Lateral MEMS-type field-emission electron source." In 2015 28th International Vacuum Nanoelectronics Conference (IVNC). IEEE, 2015. http://dx.doi.org/10.1109/ivnc.2015.7225581.

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Gruev, Dmitrii I. "Source lateral displacement influence on Kumakhov optics work." In Optical Science, Engineering and Instrumentation '97, edited by Richard B. Hoover and Arthur B. C. Walker II. SPIE, 1997. http://dx.doi.org/10.1117/12.278869.

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Lee, S. H., C. K. Jeon, J. W. Moon, and Y. C. Choi. "700V Lateral DMOS with New Source Fingertip Design." In IC's (ISPSD). IEEE, 2008. http://dx.doi.org/10.1109/ispsd.2008.4538918.

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Rasheed, Abdur. "Grey box identification approach for longitudinal and lateral dynamics of UAV." In 2017 International Conference on Open Source Systems & Technologies (ICOSST). IEEE, 2017. http://dx.doi.org/10.1109/icosst.2017.8278998.

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de Souza Mendes, André, Douglas De Rizzo Meneghetti, Marko Ackermann, and Agenor de Toledo Fleury. "Vehicle Dynamics - Lateral: Open Source Simulation Package for MATLAB." In 25th SAE BRASIL International Congress and Display. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2016. http://dx.doi.org/10.4271/2016-36-0115.

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Abdulsadda, Ahmad T., and Xiaobo Tan. "Underwater source localization using an IPMC-based artificial lateral line." In 2011 IEEE International Conference on Robotics and Automation (ICRA). IEEE, 2011. http://dx.doi.org/10.1109/icra.2011.5980545.

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Choi, Yunseok, and Tariq Alkhalifah. "Waveform inversion of lateral velocity variation from wavefield source location perturbation." In SEG Technical Program Expanded Abstracts 2013. Society of Exploration Geophysicists, 2013. http://dx.doi.org/10.1190/segam2013-0494.1.

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Yang, Yingchen, Nannan Chen, Craig Tucker, Saunvit Pandya, Douglas Jones, and Chang Liu. "Biomimetic Flow Sensing Using Artificial Lateral Lines." In ASME 2007 International Mechanical Engineering Congress and Exposition. ASMEDC, 2007. http://dx.doi.org/10.1115/imece2007-43870.

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By mimicking fish lateral lines and fish sensing behaviors, we constructed an artificial lateral line and employed it for biomimetic flow sensing. Thirteen hot-film anemometers were mounted to the surface of a NACA0015 airfoil to constitute the artificial lateral line. The resulting fish-like platform was maneuvered by a 3-degree-of-freedom robotic arm for two-dimensional mobility in aquatic environments. Assisted with specially developed algorithms, two biologically relevant flow-sensing scenarios have been realized. They were tracking a nearby dipole source in still water by detecting the dipole flow field and tracking a distant stationary source in running water by detecting its hydrodynamic wake.

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Reyes, Carlos, Brian Corbett, and Brendan Roycroft. "Large lateral scanning range fiber-based swept-source optical coherence tomography system." In Clinical and Translational Biophotonics. Washington, D.C.: OSA, 2020. http://dx.doi.org/10.1364/translational.2020.jw3a.20.

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Abdulsadda, Ahmad T., and Xiaobo Tan. "Localization of a moving dipole source underwater using an artificial lateral line." In SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, edited by Akhlesh Lakhtakia. SPIE, 2012. http://dx.doi.org/10.1117/12.916440.

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Звіти організацій з теми "Lateral source"

Pentapati, Kalyana, Deepika Chenna, Mathangi Kumar, Medhini Madi, and Vijay S. Kumar. Prevalence of Carpal Tunnel syndrome among dental health care providers -systematic review protocol. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, January 2022. http://dx.doi.org/10.37766/inplasy2022.1.0084.

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Review question / Objective: What is the prevalence of Carpal Tunnel syndrome among dental health care providers? Condition being studied: Carpal tunnel syndrome is median nerve peripheral neuropathy which causes paresthesia, pain, and numbness in territory of median nerve (thumb, index, middle, and lateral half of the ring finger). Information sources: Pubmed, SCOPUS, EMBASE, CINAHL, Web of Sciences, Dentistry and Oral Science Source from inception to January 1st 2022.

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Frisk, George V. Modal Mapping Techniques for Geoacoustic Inversion and Source Localization in Laterally Varying, Shallow-Water Environments. Fort Belvoir, VA: Defense Technical Information Center, September 2009. http://dx.doi.org/10.21236/ada531689.

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Lees, Adrienne, and Doris Akol. There and Back Again: The Making of Uganda’s Mobile Money Tax. Institute of Development Studies (IDS), July 2021. http://dx.doi.org/10.19088/ictd.2021.012.

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This paper evaluates the appropriateness of the tax policymaking process that led to the introduction, and the later adaptation, of a tax on mobile money transactions in Uganda in 2018. We examine the unusual source of the proposal, how this particular tax diverged from the usual tax policymaking process, and whether certain key stakeholders were excluded. We argue that weaknesses in the tax policymaking process undermined the quality of policy design, and resulted in a period of costly, and avoidable, policy adjustment. This case study is relevant for Uganda as well as for other low-income countries which could be exposed to similar challenges in designing effective taxes for the mobile money industry.

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Cechinel, Clovis, and Joao Alberto Martins Rodrigues. ASSOCIATION OF DELIRIUM AND FRAGILITY IN HOSPITALIZED ELDERLY: SYSTEMATIC REVIEW. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, September 2021. http://dx.doi.org/10.37766/inplasy2021.9.0022.

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Review question / Objective: What is the relationship between delirium and frailty in hospitalized elderly people? The objective of this research is to analyze the association between frailty and delirium in hospitalized elderly people, through a systematic literature review. Condition being studied: Frailty and delirium in hospitalized aged. Information sources: A specific search strategy for the language of each database was developed using, initially, the Medical Subject Headings (MEsH) descriptor and later translated to specific descriptors (Descriptors in Health Sciences (DeCS) and Embase Subject Headings (Emtree)). The search strategy will be applied by the researchers in the MEDLINE databases through the Pubmed Portal; Scielo; VHL; EMBASE, CINAHL, Scopus and Web of Science through the CAPES Journal Portal; CENTRAL via Cochrane.

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Hagel, Stefan. Understanding early auloi: Instruments from Paestum, Pydna and elsewhere. Verlag der Österreichischen Akademie der Wissenschaften, October 2021. http://dx.doi.org/10.1553/oeai_ambh_3.

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Starting from data on the ‘Paestum’ or ‘Poseidonia’ aulos established by Paul andBarbara Reichlin-Moser and Stelios Psaroudakēs, the ‘Pydna’ aulos, and comparable finds ofearly, mainly six-hole one-hole-shift, doublepipe fragments, possible musical interpretations ofthis important instrument type of the early Classical Period are considered. Probable pitchesand intervals are assessed by means of well-tested software and confirmed experimentally;the required double reeds of a much longer type than known from later periods are shownto be substantiated by iconographic and literary testimony. The harmonic analysis of theinstruments proposes the notion of a rudimentary tetrachordal structure, with equallydivided tetrachords, which is both plausible in terms of music-ethnological parallels and thedevelopment of ancient musical theory. Some of the studied instruments appear to adhereto an early pitch standard, seemingly coinciding with the typical cithara octave. Criticalevaluation of literary sources finally leads to a cautious interpretation as ‘Lydian’ instruments.

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Lacerda Silva, P., G. R. Chalmers, A. M. M. Bustin, and R. M. Bustin. Gas geochemistry and the origins of H2S in the Montney Formation. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/329794.

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The geology of the Montney Formation and the geochemistry of its produced fluids, including nonhydrocarbon gases such as hydrogen sulfide were investigated for both Alberta and BC play areas. Key parameters for understanding a complex petroleum system like the Montney play include changes in thickness, depth of burial, mass balance calculations, timing and magnitudes of paleotemperature exposure, as well as kerogen concentration and types to determine the distribution of hydrocarbon composition, H2S concentrations and CO2 concentrations. Results show that there is first-, second- and third- order variations in the maturation patterns that impact the hydrocarbon composition. Isomer ratio calculations for butane and propane, in combination with excess methane estimation from produced fluids, are powerful tools to highlight effects of migration in the hydrocarbon distribution. The present-day distribution of hydrocarbons is a result of fluid mixing between hydrocarbons generated in-situ with shorter-chained hydrocarbons (i.e., methane) migrated from deeper, more mature areas proximal to the deformation front, along structural elements like the Fort St. John Graben, as well as through areas of lithology with higher permeability. The BC Montney play appears to have hydrocarbon composition that reflects a larger contribution from in-situ generation, while the Montney play in Alberta has a higher proportion of its hydrocarbon volumes from migrated hydrocarbons. Hydrogen sulphide is observed to be laterally discontinuous and found in discrete zones or pockets. The locations of higher concentrations of hydrogen sulphide do not align with the sulphate-rich facies of the Charlie Lake Formation but can be seen to underlie areas of higher sulphate ion concentrations in the formation water. There is some alignment between CO2 and H2S, particularly south of Dawson Creek; however, the cross-plot of CO2 and H2S illustrates some deviation away from any correlation and there must be other processes at play (i.e., decomposition of kerogen or carbonate dissolution). The sources of sulphur in the produced H2S were investigated through isotopic analyses coupled with scanning electron microscopy, energy dispersive spectroscopy, and mineralogy by X-ray diffraction. The Montney Formation in BC can contain small discrete amounts of sulphur in the form of anhydrite as shown by XRD and SEM-EDX results. Sulphur isotopic analyses indicate that the most likely source of sulphur is from Triassic rocks, in particular, the Charlie Lake Formation, due to its close proximity, its high concentration of anhydrite (18-42%), and the evidence that dissolved sulphate ions migrated within the groundwater in fractures and transported anhydrite into the Halfway Formation and into the Montney Formation. The isotopic signature shows the sulphur isotopic ratio of the anhydrite in the Montney Formation is in the same range as the sulphur within the H2S gas and is a lighter ratio than what is found in Devonian anhydrite and H2S gas. This integrated study contributes to a better understanding of the hydrocarbon system for enhancing the efficiency of and optimizing the planning of drilling and production operations. Operators in BC should include mapping of the Charlie Lake evaporites and structural elements, three-dimensional seismic and sulphate ion concentrations in the connate water, when planning wells, in order to reduce the risk of encountering unexpected souring.

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Physical Uncertainties in the Planning and Delivery of Light Ion Beam Treatments. American Association of Physicists in Medicine, May 2022. http://dx.doi.org/10.37206/201.

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Light ion beam treatments are becoming more widely used. Safe and optimal treatments may only be achieved when uncertainties are considered at every step of the planning and delivery process. These uncertainties include, but are not limited to, penetration uncertainties due to beam delivery, uncertainties in dose compliance, uncertainties of x-ray computed tomography numbers, absolute and relative linear stopping powers, absolute and relative linear scattering powers, conversion of x-ray computed tomography numbers to relative linear stopping power, lateral alignment uncertainties, and uncertainties due to inter-fractional and intra-fractional anatomical variations. Knowing the source and magnitude of these uncertainties, the planner must optimize the plans to mitigate the effect of these uncertainties as much as possible without making the plan undeliverable. Visualization of dose distributions considering the effects of these uncertainties is an important step in evaluating the safety and effectiveness of the plans. This report by Task Group 202 of the AAPM has endeavored to address each of these topics as a guide to the user of light ion beam treatments.

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National report 2009-2019 - Rural NEET in Romania. OST Action CA 18213: Rural NEET Youth Network: Modeling the risks underlying rural NEETs social exclusion, December 2020. http://dx.doi.org/10.15847/cisrnyn.nrro.2020.12.

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This report describes a particular situation of young population in Romania: the population of NEETs, with a focus on rural NEETs.Based on a complex methodology which uses data from different national sources (INS) and international sources (Eurostat, EU Labour Force Survey-EU-LFS, OECD),this report gives an overview of the evolution and particularities of NEETs in Romania during the previous deca-de, namely 2009-2019.Within the last ten years, the population of NEETs in Romania has grown rapidly, placing Ro-mania in first place in the EU-28 in terms of the share of this population among the young population. Thus, in 2009 Romania with a NEET rate of 13.9%, occupied first places in the EU, along with Bulgaria (19.5%), Italy (17.5%), Latvia (17.5%) (Eurostat, 2020). A decade later, in Bulgaria and Latvia, the NEET rate decreased significantly to 13.7% and 7.9%, respectively, but in Romania and Italy it increased by more than 1pp: 14.7% in Romania and 18.1% in Italy. (Eurostat, 2020). The causes for this are both individual (way of life, socio-familial origin, expectations and aspirations) and socio-economic (accessibility of the education system, development of lifelong learning, correspondence between education and labour market demand, particu-larities of the Romanian labour market, socio-economic policies supported by central and local authorities, etc.)

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