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Статті в журналах з теми "Lateral source"
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Owen, Thomas E., and Edgar C. Schroeder. "Asymmetrical lateral force seismic source transducer." Journal of the Acoustical Society of America 83, no. 4 (1988): 1713. http://dx.doi.org/10.1121/1.395859.
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Dimitrieska, Savica, Andrijana Bojadzievska-Danevska, and Elena Parnardzieva-Stanoevska. "LATERAL MARKETING – A SOURCE OF ENTREPRENEURIAL INNOVATIONS." Entrepreneurship 12, no. 1 (2024): 107–14. http://dx.doi.org/10.37708/ep.swu.v12i1.10.
Повний текст джерелаАнотація:
In practice, we are often faced with innovations that are the result of joining two or more incompatible components, which at first glance are illogical and sometimes even scandalous. These innovations, initially unacceptable for a large number of people, are accepted and applied as something normal and routine over time. Those innovations are by their very nature lateral, creative, innovative and unimaginable novelties. There are many examples of such innovations, but as more significant we will mention the merging of wristwatches with the Internet and telephone, bookstores that offer jazz concerts and bar services, gas stations that sell medicine, chocolates with toys, housing buildings with botanical gardens and rooftop restaurants, etc. The purpose of this paper is to elaborate on how these innovations become significant for marketing as well. The paper should highlights the positive, but also the limiting barriers and criticisms of lateral marketing. Lateral marketing is a recent term, still vague, undefined and therefore the paper mostly uses secondary data.
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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 (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 (2016): 809–13. http://dx.doi.org/10.1109/ted.2015.2506778.
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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 (2020): 332–43. http://dx.doi.org/10.1139/cjp-2019-0055.
Повний текст джерелаАнотація:
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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Linnarsson, Margareta K., Michl Kaiser, Rickard Liljedahl, et al. "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.
Повний текст джерелаАнотація:
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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Rios Mora, Juan Sebastian, Bernard Collignan, Thierno Diallo, Marc Abadie, and Karim Limam. "Influence of the lateral source/building separation on vapour intrusion: A numerical study." E3S Web of Conferences 172 (2020): 07006. http://dx.doi.org/10.1051/e3sconf/202017207006.
Повний текст джерелаАнотація:
Various vapour intrusion (VI) models have been proposed in order to predict indoor concentration of Volatile Organic Compounds (VOCs) in buildings. However, these models tend to be conservative, and overestimate or underestimate vapour flux emissions due to several assumptions. Particularly, most of these VI models only consider an infinite uniform contaminated groundwater as the principal source of VOCs in the soil, and lateral pollution source in the vadose zone are disregarded. It has been shown that ignoring the lateral source position may lead to uncertainties on the estimations. In this paper, a numerical model is developed in order to better understand the relationship between the lateral source position in the soil, including both a source in the vadose zone and a source located at the groundwater level, and the resulting indoor air concentration. Results show that source position plays a significant role on vapour intrusion attenuation. In fact, indoor concentration of VOCs decreases with increasing lateral separation. Finally, it is shown that considering the source position can significantly improve the quality of VI predictions.
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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 (2011): 2567–74. http://dx.doi.org/10.2166/wst.2011.564.
Повний текст джерелаАнотація:
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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Kwok, R. H. F., K. R. Baker, S. L. Napelenok, and G. S. Tonnesen. "Photochemical grid model implementation and application of VOC, NO<sub>x</sub>, and O<sub>3</sub> source apportionment." Geoscientific Model Development 8, no. 1 (2015): 99–114. http://dx.doi.org/10.5194/gmd-8-99-2015.
Повний текст джерелаАнотація:
Abstract. For the purposes of developing optimal emissions control strategies, efficient approaches are needed to identify the major sources or groups of sources that contribute to elevated ozone (O3) concentrations. Source-based apportionment techniques implemented in photochemical grid models track sources through the physical and chemical processes important to the formation and transport of air pollutants. Photochemical model source apportionment has been used to track source impacts of specific sources, groups of sources (sectors), sources in specific geographic areas, and stratospheric and lateral boundary inflow on O3. The implementation and application of a source apportionment technique for O3 and its precursors, nitrogen oxides (NOx) and volatile organic compounds (VOCs), for the Community Multiscale Air Quality (CMAQ) model are described here. The Integrated Source Apportionment Method (ISAM) O3 approach is a hybrid of source apportionment and source sensitivity in that O3 production is attributed to precursor sources based on O3 formation regime (e.g., for a NOx-sensitive regime, O3 is apportioned to participating NOx emissions). This implementation is illustrated by tracking multiple emissions source sectors and lateral boundary inflow. NOx, VOC, and O3 attribution to tracked sectors in the application are consistent with spatial and temporal patterns of precursor emissions. The O3 ISAM implementation is further evaluated through comparisons of apportioned ambient concentrations and deposition amounts with those derived from brute force zero-out scenarios, with correlation coefficients ranging between 0.58 and 0.99 depending on specific combination of target species and tracked precursor emissions. Low correlation coefficients occur for chemical regimes that have strong nonlinearity in O3 sensitivity, which demonstrates different functionalities between source apportionment and zero-out approaches, where appropriate use depends on whether source attribution or source sensitivity is desired.
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Wang, Min, Chunyong Fan, and Guisheng Hou. "Numerical research of lateral flow influence on supercavitating flow." AIP Advances 12, no. 4 (2022): 045214. http://dx.doi.org/10.1063/5.0090282.
Повний текст джерелаАнотація:
In this paper, a recompiled multiphase flow solver, which introduced the lateral flow source into the code, is developed to investigate the effect of the lateral flow on the supercavitation phenomenon. The evolution of the supercavity profile and the resistance of the vehicle under different lateral flow speeds are studied. The results show that the recompiled solver can calculate the effect of the lateral flow on the supercavitation, and the influence of lateral flow on the supercavity is related to the speed of the counter flow. Under the same lateral flow velocity, the higher the convection velocity, the weaker the influence of lateral flow on the cavity profile and resistance. When the lateral flow velocity is less than 8% of the convection velocity, the effect of the lateral flow on the supercavity size and the resistance of the vehicle can be ignored. As the lateral flow strengthens, the supercavity will deform and even break and the resistance of the vehicle increases significantly. After removing the source of the lateral flow, the cavity re-grows again and forms a huge supercavity, which is much larger than the original one before introducing the velocity source. Then, the cavity gradually shrinks and reaches a new steady state.
Дисертації з теми "Lateral source"
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MacInnes, Scott Charles. "Lateral effects in controlled source audiomagnetotellurics." Diss., The University of Arizona, 1988. http://hdl.handle.net/10150/184322.
Повний текст джерелаАнотація:
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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Vallesi, Antonino. "The monitoring role of right lateral prefrontal cortex: evidence from variable foreperiod and source memory tasks." Doctoral thesis, SISSA, 2007. http://hdl.handle.net/20.500.11767/4003.
Повний текст джерелаАнотація:
The main purpose of this research project was to investigate the monitoring function of the right dorsolateral prefrontal cortex using different tasks in two domains. To that purpose, the architecture of the cognitive processes required to perform each task was extracted by means of different approaches of functional dissociation.
A variable foreperiod (FP) task was initially adopted. In such a task, simple/choice RTs are required while FPs of different duration vary on a trial-by-trial basis equiprobably in a rectangular distribution but randomly. As a result, the conditional probability is higher later in the FP range and RT is faster as the FP increases. This is the variable FP effect, which a recent neuropsychological study shows to be impaired in right lateral prefrontal patients. Another phenomenon usually obtained with such a paradigm is that of the sequential effects: RT becomes slower as the FP on the preceding trial gets longer.
Contrasting views in the literature propose either multi-process strategic accounts, or a single-process conditioning account. In the project, these alternative theories were tested using behavioural studies on adults and children. The findings of these studies were not fully compatible with the previous views. A composite dual-process account, which shares some aspects with the previous accounts, was put forward and discussed. On this account, sequential effects are due to automatic processes acting on the arousal level, whereas the FP effect is due to a strategic process monitoring the conditional probability of stimulus occurrence.
Results of two TMS experiments confirm that the right dorsolateral prefrontal cortex is responsible for the FP effect, but not for the sequential effects. A neuropsychological study on tumor patients further corroborates this finding and suggests that left premotor areas are more likely to be the locus of the sequential effects.
In order to test whether the explicit temporal judgment has an influence on the nature of the FP phenomena, a series of behavioural experiments was conducted using a modified version of the variable FP paradigm. In the basic task, explicit judgments about the FP length were required. No modulation of the FP phenomena was obtained. However, a new stimulus-response compatibility effect was found: RT was faster when short and long FPs had to be responded to with left and right response-keys, respectively, than with the opposite stimulus-response mapping. This effect suggests that elapsing time is represented, in some circumstances, by means of spatial coordinates. Control experiments enable us to reject accounts based on hand/hemispheric asymmetries, but not accounts based on more categorical factors such as the linguistic markedness of the words used to label the stimuli and the responses. The last part of the project aimed at extending results about a monitoring role (intended in a broad sense) of the right prefrontal cortex to a domain different from non-specific preparation. Two experiments in the source memory domain were run recording ERPs in the retrieval phase. The results show that prefrontal ERPs are not modulated by retrieval success, but by retrieval confidence, with low-confidence responses being associated with more positive waves than high-confidence ones, bilaterally, in the anterior prefrontal sites. Moreover, prefrontal waves were asymmetrically more positive in the right than in the left scalp regions, independently of confidence and accuracy. On the basis of these results, we could reject accounts linked to retrieval success. The results are instead interpreted in terms of different prefrontally-located monitoring processes in source memory retrieval.
Overall, the project represents an instantiation of the fractionation approach recently adopted to study the supervisory functions of the prefrontal cortex. This approach was used here in order to understand the differential role of a particular prefrontal area (i.e., the right dorsolateral prefrontal cortex) in a rather specific function (i.e., monitoring). This goal was developed in synchrony with the attainment of a better functional description of the tasks employed.
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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.
Повний текст джерелаАнотація:
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.
Повний текст джерелаАнотація:
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<br>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.
Повний текст джерелаАнотація:
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.<br> 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.<br> 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.<br>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.
Книги з теми "Lateral source"
1
Parker, James N., and Philip M. Parker. Lateral epicondylitis: A medical dictionary, bibliography, and annotated research guide to Internet references. ICON Health Publications, 2004.
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2
P, Fuller Anne, Catholic Church. Pope (Leo XX), and Irish Manuscripts Commission, eds. Calendar of entries in the papal registers relating to Great Britain and Ireland: Papal letters. Vol. XX, 1513-1521, Leo X Lateran Registers, Part One. Irish Manuscripts Commission, 1998.
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3
Duval-Arnould, Louis. Le pergamene dell'Archivio capitolare lateranense: Inventario della serie Q e bollario della Chiesa lateranense. Archivio capitolare lateranense, 2010.
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Grabowski, Antoni. The Construction of Ottonian Kingship. Amsterdam University Press, 2018. http://dx.doi.org/10.5117/9789462987234.
Повний текст джерелаАнотація:
German historians long assumed that the German Kingdom was created with Henry the Fowler's coronation in 919. The reigns of both Henry the Fowler, and his son Otto the Great, were studied and researched mainly through Widukind of Corvey's chronicle Res Gestae Saxonicae. There was one source on Ottonian times that was curiously absent from most of the serious research: Liudprand of Cremona's Antapodosis. The study of this chronicle leads to a reappraisal of the tenth century in Western Europe showing how mythology of the dynasty was constructed. By looking at the later reception (through later Middle Ages and then on 19th and 20th century historiography) the author showcases the longevity of Ottonian myths and the ideological expressions of the tenth century storytellers.
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Bányászová, Katarína. Volný čas objektivem šlechty. Národní Památkový Ústav, 2016.
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Fujishima, Naoto. A high density, low on-resistance, trench lateral power MOSFET with a trench bottom source contact. 2003.
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Mitchell, Karen J. The Cognitive Neuroscience of Source Monitoring. Edited by John Dunlosky and Sarah (Uma) K. Tauber. Oxford University Press, 2015. http://dx.doi.org/10.1093/oxfordhb/9780199336746.013.2.
Повний текст джерелаАнотація:
Source monitoring is a metamemory function that includes processes for encoding and organizing the content of memories, and processes that selectively revive, cumulate, and evaluate that content in the service of making attributions about the origin of the information (e.g., perception vs imagination). Neuroimaging techniques, especially functional magnetic resonance imaging (fMRI), are encouraging rapid developments in understanding the neural mechanisms supporting source monitoring. This chapter reviews current findings, placing them in historical context. It highlights key issues of particular relevance, including: neural reinstatement—the match between brain activity at encoding and later remembering; the role of lateral parietal cortex in cumulating multiple features and attending to information during remembering; functional specificity of the prefrontal cortex with respect to cognitive control; and identifying functional networks that support source monitoring. Suggestions are made for clarifying the big picture and increasing the specificity of our understanding of source monitoring and its neural architecture.
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Pagnini, Francesco, Deborah Phillips, Eleonora Volpato, Paolo Banfi, and Ellen Langer. Mindfulness and mindlessness and ALS. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780198757726.003.0004.
Повний текст джерелаАнотація:
Mindfulness and mindlessness are two relevant psychological constructs for the field of amyotrophic lateral sclerosis (ALS). When mindful, people are more open, flexible, and aware, and this attitude results in a higher psychological well-being. A mindful attitude is a source of psychological resilience for people with ALS and their caregivers. Conversely, a mindless view about the illness, reducing the whole person’s identify to the diagnosis, represents a threat to their quality of life. Furthermore, preliminary findings seem to suggest that mindfulness is associated with a slower course of the disease. In this chapter we discuss the impact that mindfulness can exert on both the quality and the quantity of life.
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The Acts of the Lateran Synod Of 649. Liverpool University Press, 2014.
Знайти повний текст джерелаЧастини книг з теми "Lateral source"
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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. 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. 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. 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. 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. 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. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-66402-2_2.
Повний текст джерелаАнотація:
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. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-45220-9_1.
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Austern, Linda Phyllis. "The Sources of the Music." In Music in English Children's Drama of the Later Renaissance. Routledge, 2024. http://dx.doi.org/10.4324/9781003508168-9.
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Karakaya, Ersin. "The Agricultural Importance of Alternative Protein Sources." In Alternative Protein Sources. Nobel Tip Kitabevleri, 2024. http://dx.doi.org/10.69860/nobel.9786053359289.8.
Повний текст джерелаАнотація:
Alternative protein sources have emerged as a significant topic from an agricultural perspective. Alternative protein sources include alternative plants, algae, fungi, insects, microbial proteins, in vitro or artificial meat, dairy-free vegan cheese, and other products produced through technologies such as biofermentation. The integration of alternative protein sources into agricultural production systems is seen as an important step towards a sustainable food system. This integration not only helps reduce environmental impacts but also plays a key role in meeting the protein needs of the growing global population in the future. This study was prepared to reveal the agricultural importance of alternative protein sources. In conclusion, considering global developments, it can be said that sooner or later insect-fortified foods, food ingredients, or cosmetic products will enter our lives. Therefore, urgent efforts are needed to start religious, scientific, and industrial studies to solve this current issue from an Islamic perspective.
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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. Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-642-73978-1_16.
Повний текст джерелаТези доповідей конференцій з теми "Lateral source"
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Szyszka, Piotr. "Lateral Glow Discharge Ion Source for the Integrated MEMS Quadrupole Mass Spectrometer." In 2024 37th International Vacuum Nanoelectronics Conference (IVNC). IEEE, 2024. http://dx.doi.org/10.1109/ivnc63480.2024.10652352.
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Gardner, A. R., and J. Ponder. "Using a Common Gas Source for Defining DG-ICDA Regions: a Case Study." In CORROSION 2009. NACE International, 2009. https://doi.org/10.5006/c2009-09138.
Повний текст джерелаАнотація:
Abstract Defining the boundaries of DG-ICDA regions is a critical aspect of conducting Dry Gas Internal Corrosion Direct Assessment (DG-ICDA). Gas transmission pipeline operators with multiple laterals which originate from a common trunk line could conceivably consider each lateral or purchase point off the trunk line as individual DG-ICDA regions. This methodology can result in unnecessary digs and increased project reporting needs, ultimately increasing project scope. In cases where inline inspection was used as the integrity assessment methodology addressing internal corrosion on the trunk line, multiple laterals which tap off the same trunk line can be combined into one ICDA region. This paper shares a case study in conducting DG-ICDA by combining multiple laterals with take-off points from a common gas source into one ICDA Region, introduces a practice for establishing representative flow conditions to consider the impact of flow rate variability on direct examination site selection and elaborates on the interpretation of the gas hold-up equation.
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Gong, Zheng, Wenxiu Cao, Zhen Yang, Deyuan Zhang, Yueri Cai, and Yonggang Jiang. "Underwater Vortex Source Localization Using an Artificial Lateral Line System with Differential Pressure and Velocity Sensors." In OCEANS 2024 - SINGAPORE. IEEE, 2024. http://dx.doi.org/10.1109/oceans51537.2024.10682308.
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Guo, Renzhi, and Jonas Braasch. "Influence of Recording Technique and Ensemble Size on Apparent Source Width." In ICAD 2024: The 29th International Conference on Auditory Display. International Community for Auditory Display, 2024. http://dx.doi.org/10.21785/icad2024.009.
Повний текст джерелаАнотація:
Previous studies have looked at how different concert halls with different lateral reflections affect apparent source width. Yet, the perceptual effects of different source distributions with different recording techniques on apparent source width are not well understood. This study explores how listeners perceive the width of an orchestra by using four stereo and one binaural recording techniques and three wave field synthesis ensemble settings. Subjective experiments were conducted using stereo loudspeakers and headphone to play back the recording clips asking the listeners to rate the perceived wideness of the sound source. Results show that recording techniques greatly influence how wide an orchestra is perceived. The primary mechanism used to judge auditory spa- tial impression differs between stereo loudspeaker and headphone listening. When western classical symphony is recorded and reproduced by two-channel stereophony, the changes in instrument positions in terms of increasing or reducing the physical source width do not lead to an obvious increase or reduction on the spatial impression of the performing entity.
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Gnauck, Peter, Alexander Ost, and Torsten Richter. "An Innovative Analytics Platform for High-Resolution 3D Ion Imaging and SIMS Nanoanalytics with Precise Sample Navigation." In ISTFA 2024. ASM International, 2024. http://dx.doi.org/10.31399/asm.cp.istfa2024p0188.
Повний текст джерелаАнотація:
Abstract Advanced nanoscale material characterization requires high lateral resolution and sensitivity. This paper presents a novel analytical system that integrates a liquid metal alloy ion source (LMAIS), magnetic sector secondary ion mass spectrometry (SIMS), and laser interferometer stage with focused ion beam (FIB) technology. This integration enables high-resolution 2D/3D structural visualization and precise surface analysis at the nanoscale. We demonstrate the system's enhanced capabilities in microelectronics applications, where it achieves unprecedented spatial resolution and analytical sensitivity. Our results show how this advanced nano-analysis platform expands the boundaries of materials science and semiconductor technology characterization.
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Crolet, Jean-Louis, Nicolas Thevenot, and Srdjan Nesic. "Role of Conductive Corrosion Products on the Protectiveness of Corrosion Layers." In CORROSION 1996. NACE International, 1996. https://doi.org/10.5006/c1996-96004.
Повний текст джерелаАнотація:
Abstract In the CO2 corrosion of steels, the bicarbonate ion HCO3- is simultaneously the buffer for carbonic acid, the source of FeCO3 precipitation and the product of the cathodic reaction. In addition to the spatial separation of the production of Fe+ + and HCO3-, the galvanic coupling between the steel and cementite layers is also the principal cause of internal acidification in these layers, since the HCO3- ions are then removed from the steel surface by electromigration. This can facilitate the initiation of localized corrosion, by lateral galvanic coupling. This mechanism also explains the role of traces of free acetic acid and the existence of multiple steady states. Finally, transposition to the corrosion of iron by H2S or to the corrosion of copper is also discussed.
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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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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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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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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.
Повний текст джерелаЗвіти організацій з теми "Lateral source"
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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, 2022. http://dx.doi.org/10.37766/inplasy2022.1.0084.
Повний текст джерелаАнотація:
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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Turner, Benjamin. Guidance for Factoring Deep Foundation Structural Resistance for Landslide Stabilization and Excavation Support. Deep Foundations Institute, 2023. http://dx.doi.org/10.37308/cpf-2017-land-1.
Повний текст джерелаАнотація:
Lateral support provided by deep foundations can be an effective means to stabilize existing and potential landslides, and deep foundations contribute to the stability of support-of-excavation systems. However, defining the structural resistance and implementing it in a slope stability analysis that satisfies LRFD requirements is a source of significant confusion and miscommunication among geotechnical and structural designers. This report explains the implications of applying (or not) structural resistance factors at various stages of the analysis. Furthermore, most commercial slope stability software offers the option to either use the user-input structural resistance without reducing it by the slope stability factor of safety (“Method A”) or to reduce the structural resistance by the stability factor of safety (“Method B”). Applying a structural resistance factor and/or using Method B will result in designs requiring more structural reinforcement; however, it is not necessarily the case that doing so will significantly improve reliability (i.e., decrease the probability of failure) of the slope. Three example cases are presented and analyzed probabilistically to demonstrate how reliability is influenced by the chosen method for factoring structural resistance, and the various scenarios for which this may or may not represent a tangible improvement in reliability from the slope Owner’s perspective. A recommended approach for factoring and implementing deep foundation structural resistance in slope stability analyses is described along with a simple example. After initial stability analyses are run without the deep foundations to define the critical surface geometry, p-y method lateral pile-soil interaction analyses are performed to identify the controlling strength limit state and corresponding mobilized shear resistance at the intersection of the deep foundation and critical slide surface. Because this mobilized resistance is limited by the factored shear and flexural strength of the foundation element, it represents a factored resistance, and inherently satisfies LRFD structural design requirements. This factored resistance is input back into the slope stability analyses using Method A such that no additional factoring is applied to the structural resistance; the stability analyses must then satisfy a minimum factor of safety, typically in the range of 1.3 to 1.5. The AASHTO LRFD Bridge Design Specifications prescribe that the global stability factor of safety is interpreted as the reciprocal of the geotechnical resistance factor, and that the load factor for global stability is 1.0. Hence, the recommended approach satisfies structural and geotechnical LRFD requirements.
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Khosravifar, Arash. COMBINED EFFECTS OF LATERAL SPREADING AND SUPERSTRUCTURE INERTIA. Deep Foundations Institute, 2023. http://dx.doi.org/10.37308/cpf-2020-drsh-2.
Повний текст джерелаАнотація:
The seismic behavior of a RC pile with a diameter of 0.25 m subjected to liquefaction-induced lateral spreading was investigated using a shake table experiment that was conducted at the University of California, San Diego by Professor Ahmed Elgamal and Dr. Ahmed Ebeido (Ebeido and Elgamal 2019). A sinusoidal motion was applied at the base of a model that was inclined by 4 degrees. The loose and dense sand layers liquefied during the test, resulting in a permanent lateral spreading displacement of approximately 0.4 m (Figure E1). The pile was subjected to the combined effects of inertial loads from the acceleration of the superstructure mass and kinematic loads from the overlying nonliquefiable, dry crust. The dynamic responses of the soil and pile were analyzed to evaluate the relative contributions of inertial and kinematic loads during critical cycles (i.e., at the time of maximum inertia and the time of maximum pile strains). It was found that large pile strains developed after liquefaction was triggered. Large pile strains (and curvature) were recorded at a shallow depth within the crust (0.49 m) and a deeper location below the loose liquefiable sand (1.89 m). Large pile strains at shallow depth were found to be correlated with the inertial loads applied in the upslope direction. These upslope inertial loads were resisted by downslope crust loads, indicating an out-of-phase interaction. In contrast, large pile strains that occurred at deeper locations were correlated with downslope inertial loads and were accompanied by zero crust load, indicating that there was no lateral spreading force during the downslope inertial cycles. A gap at the downslope area in front of the pile formed because the soil displacements exceeded the pile displacements during the cyclic phase after liquefaction was triggered. The lack of crust load during the downslope inertial cycles is attributed to the pile head outrunning the crust displacement and causing the pile to be pushed into the gap at the downslope area in front of the pile. The interaction of inertia and kinematics appears to be a site- and project-specific phenomena. Therefore,the findings of this study—and, specifically, the lack of lateral spreading crust load during downslope inertial cycles—should be considered in design as one possible scenario in addition to the scenarios from several other studies that suggest combining the inertial loads with a lateral spreading force (e.g., Boulanger et al. 2007, Turner et al. 2016, Souri et al. 2022, Tokimatsu et al. 2005, Cubrinovski et al 2017).
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Jay. L51723 Guidelines for Sound Power Level Measurements Compressor Equipment. Pipeline Research Council International, Inc. (PRCI), 1994. http://dx.doi.org/10.55274/r0010419.
Повний текст джерелаАнотація:
Increasing legislation and public awareness of noise are intensifying the efforts of industries today to reduce the noise. The natural gas industry has proved that it is one of the industrial leaders in its awareness of noise problems and has maintained a vigorous research program in noise control for over 30 years. A noise survey can be done in several ways: point measurements, grid point methods, contour methods, scanning techniques, etc. The selection of the method depends on the accuracy required, available personnel, expertise etc. For the most accurate determination of sound power, the scanning method using sound intensity measurements is considered to be the best available in present day circumstances. This method is discussed in detail in later chapters. Point and grid point measurements are useful to determine the Sound Pressure Level, but are of limited use in quantifying the Sound Power Level of a noise source in a complex and multi-source environment such as a compressor station. Guidelines for Sound Power Level Measurements for Compressor Station Equipment Report documents the development of guidelines for in-situ sound power level measurements for compressor station equipment, with sample calculations. Measurement of equipment noise levels in a complex, multi-source environment is very difficult and may be accomplished by several methods. These guidelines specify the sound intensity approach that can be used in almost any field situation. The sound power guidelines described in this report specify the sound intensity approach as the primary measurement method since it can be used in almost any field situation to determine the sound power of a source. In open spaces without reflecting surfaces (except the ground plane) sound pressure measurements may give satisfactory estimates of the sound power of noise sources if background noise is low and other sources can be turned off. Inside a compressor building, the modified reverberation room approach may be allowed, but then only the total sound power can be determined unless background sources can be controlled or other sources turned off. Lastly, the standard guidelines developed were used to conduct field measurements of the sound power of four equipment noise sources including: a) turbine casing, b) turbine air inlet, c) cooler and d) exhaust stack.
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Frisk, George V. Modal Mapping Techniques for Geoacoustic Inversion and Source Localization in Laterally Varying, Shallow-Water Environments. Defense Technical Information Center, 2009. http://dx.doi.org/10.21236/ada531689.
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Frisk, George V. Modal Mapping Techniques for Geoacoustic Inversion and Source Localization in Laterally Varying, Shallow-Water Environments. Defense Technical Information Center, 2008. http://dx.doi.org/10.21236/ada533035.
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Frisk, George V. Modal Mapping Techniques for Geoacoustic Inversion and Source Localization in Laterally Varying, Shallow-Water Environments. Defense Technical Information Center, 2007. http://dx.doi.org/10.21236/ada541767.
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Avellán, Leopoldo, Arturo Galindo, Giulia Lotti, and Juan Pablo Rodríguez Bonilla. Research Insights: What Can Multilateral Development Banks Do to Reduce Infrastructure Gaps in Emerging Economies? Inter-American Development Bank, 2023. http://dx.doi.org/10.18235/0004820.
Повний текст джерелаАнотація:
Through their loans, Multilateral Development Banks (MDBs) are key resource mobilizers. MDB lending to a sector in a country significantly increases inflows from other sources up to two years later. The resources mobilized are more than four times the size of MDB financing. They come from both the public and the private sector, and the mobilization that takes place is cross-border as well as national.
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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), 2021. http://dx.doi.org/10.19088/ictd.2021.012.
Повний текст джерелаАнотація:
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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Gage, B. D., and D. L. Driskill. PB2012103948 Analyses of Natural Gases 2002-2004. Pipeline Research Council International, Inc. (PRCI), 2005. http://dx.doi.org/10.55274/r0012116.
Повний текст джерелаАнотація:
Contains analyses and related source data for 451 natural gas samples from 15 States. Of the total samples, 381 were collected during the calendar years 2002 through 2004. The remaining 70 were collected earlier, but releases granting permission to publish them were received at a later date. None of these analyses have been published previously in other analyses reports. The analyses were done using gas chromatography. All samples were obtained and analyzed as part of the Bureau of Land Management investigations of the occurrences of helium in natural gases of countries with free-market economies. This helium survey program has been conducted since 1917. The results are published periodically to make the information available to members of the helium and petroleum industries and to the general public