Relevant bibliographies by topics / Long-term source

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Long-term source'

Author: Grafiati
Published: 4 June 2021
Last updated: 17 February 2022

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Journal articles on the topic "Long-term source"

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Gaensler, B. M., and R. W. Hunstead. "Long-term Monitoring of Molonglo Calibrators." Publications of the Astronomical Society of Australia 17, no. 1 (2000): 72–82. http://dx.doi.org/10.1071/as00072.

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AbstractBefore and after every 12 hour synthesis observation, the Molonglo Observatory Synthesis Telescope (MOST) measures the flux densities of ∼5 compact extragalactic radio sources, chosen from a list of 55 calibrators. From 1984 to 1996, the MOST made some 58,000 such measurements. We have developed an algorithm to process this dataset to produce a light curve for each source spanning this thirteen-year period. We find that 18 of the 55 calibrators are variable, on time scales between one and ten years. There is the tendency for sources closer to the Galactic Plane to be more likely to vary, which suggests that the variability is a result of refractive scintillation in the Galactic interstellar medium. The sources with the flattest radio spectra show the highest levels of variability, an effect possibly resulting from differing orientations of the radio axes to the line of sight.
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Wood, Robert Chapman. "Visionary customers: source of long-term competitive advantage." Strategy & Leadership 46, no. 3 (May 21, 2018): 29–36. http://dx.doi.org/10.1108/sl-02-2018-0014.

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Purpose This case describes how Varian Medical Systems, the successor to one of the pioneers of Silicon Valley, created a business with $11.6 billion in market cap by listening to dreams of its physician customers and their scientist colleagues and finding ways to fulfill them over several decades. Design/methodology/approach A key business opportunity that spurred the company was to identify the most perceptive thought-leader customers, then bring them into a long-term, system-building partnership. Findings If companies envision the future and work with perceptive, far-sighted customers and others who will benefit from high-value innovation, together they stand a real chance of achieving a desired future. Practical implications Establish forums where perceptive, visionary customers meet with executives, marketers and key developers to identify what you should deliver in the immediate future and in years beyond. Originality/value The case described the practical steps the company took to implement customer participation in the innovation process over many decades.
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Ahn, Tae M. "Long-term C-14 source term for a high-level waste repository." Waste Management 14, no. 5 (January 1994): 393–408. http://dx.doi.org/10.1016/0956-053x(94)90044-2.

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Fick, Steven E. "Long-Term Stability of the NIST Standard Ultrasonic Source." Journal of Research of the National Institute of Standards and Technology 113, no. 5 (September 2008): 281. http://dx.doi.org/10.6028/jres.113.021.

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Hanson, Ralph. "Long-term effects of the energy source education program." Studies in Educational Evaluation 19, no. 4 (January 1993): 363–81. http://dx.doi.org/10.1016/s0191-491x(10)80002-1.

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Jacobs, Timothy L., and Brian E. Nicholson. "Long‐term implementation strategies for mobile source VOC reductions." Journal of Environmental Science and Health . Part A: Environmental Science and Engineering and Toxicology 26, no. 7 (October 1991): 1033–53. http://dx.doi.org/10.1080/10934529109375685.

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Chen, X., J. P. Rachen, M. López-Caniego, C. Dickinson, T. J. Pearson, L. Fuhrmann, T. P. Krichbaum, and B. Partridge. "Long-term variability of extragalactic radio sources in thePlanckEarly Release Compact Source Catalogue." Astronomy & Astrophysics 553 (May 2013): A107. http://dx.doi.org/10.1051/0004-6361/201220517.

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Buła, Dawid, Dariusz Grabowski, Andrzej Lange, Marcin Maciążek, and Marian Pasko. "Long- and Short-Term Comparative Analysis of Renewable Energy Sources." Energies 13, no. 14 (July 13, 2020): 3610. http://dx.doi.org/10.3390/en13143610.

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Network working conditions are influenced noticeably by the connection of renewable energy sources to distribution networks. This becomes more and more important due to the increase in renewable energy source penetration over the last few years. This in turn can lead to a mass effect. As a result, the classical open network model with simple unidirectional direction of energy flow has been replaced with an active model that includes many local energy sources. This paper deals with the analysis of long- and short-term changes in power and energy generated by three types of renewable energy sources with similar rated power and which operate in the same region (i.e., located no more than tens of kilometers away). The obtained results can be a starting point for a broader evaluation of the influence of renewable energy sources on power quality in power systems, which can be both positive (supply reliability) and negative (voltage fluctuations and higher harmonics in current and voltage waveforms). It is important not only to correctly place but also to assure the diversity of such sources as it has been confirmed by the source variability coefficient. The long-term analysis allows us also to estimate the annual repeatability of energy production and, furthermore, the profitability of investment in renewable sources in a given region.
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Nyberg, Ulf, Bengt Andersson, and Henrik Aspegren. "Long-term experiences with external carbon sources for nitrogen removal." Water Science and Technology 33, no. 12 (June 1, 1996): 109–16. http://dx.doi.org/10.2166/wst.1996.0314.

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Methanol and ethanol have been used for three years as external carbon sources in a nutrient removal system based on pre-precipitation and post-denitrification in a single sludge activated sludge plant. Based on these long-term experiences it has been shown that the nitrogen standards of 8 mg N/l in the effluent wastewater can be met with both carbon sources. The process entails operational flexibility and the possibility to optimize the nitrogen removal due to seasonal variations in influent wastewater characteristics. Very high specific nitrate utilization rates were measured in the system with the use of external carbon sources. Rates of around 10 mg N/g VSS.h were reached with ethanol and around 3 mg N/g VSS.h with methanol. These rates were much higher than experienced in a pre-denitrification system with the use of the influent organic material as carbon source for denitrification. A start-up with the addition of ethanol led to a direct response of the system while a start-up with methanol resulted in a much longer adaptation period before full effect of the carbon source added was reached.
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Nasse, Jan-Marcus, Philipp G. Eger, Denis Pöhler, Stefan Schmitt, Udo Frieß, and Ulrich Platt. "Recent improvements of long-path DOAS measurements: impact on accuracy and stability of short-term and automated long-term observations." Atmospheric Measurement Techniques 12, no. 8 (August 1, 2019): 4149–69. http://dx.doi.org/10.5194/amt-12-4149-2019.

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Abstract. Over the last few decades, differential optical absorption spectroscopy (DOAS) has been used as a common technique to simultaneously measure abundances of a variety of atmospheric trace gases. Exploiting the unique differential absorption cross section of trace-gas molecules, mixing ratios can be derived by measuring the optical density along a defined light path and by applying the Beer–Lambert law. Active long-path (LP-DOAS) instruments can detect trace gases along a light path of a few hundred metres up to 20 km, with sensitivities for mixing ratios down to ppbv and pptv levels, depending on the trace-gas species. To achieve high measurement accuracy and low detection limits, it is crucial to reduce instrumental artefacts that lead to systematic structures in the residual spectra of the analysis. Spectral residual structures can be introduced by most components of a LP-DOAS measurement system, namely by the light source, in the transmission of the measurement signal between the system components or at the level of spectrometer and detector. This article focuses on recent improvements by the first application of a new type of light source and consequent changes to the optical setup to improve measurement accuracy. Most state-of-the-art LP-DOAS instruments are based on fibre optics and use xenon arc lamps or light-emitting diodes (LEDs) as light sources. Here we present the application of a laser-driven light source (LDLS), which significantly improves the measurement quality compared to conventional light sources. In addition, the lifetime of LDLS is about an order of magnitude higher than of typical Xe arc lamps. The small and very stable plasma discharge spot of the LDLS allows the application of a modified fibre configuration. This enables a better light coupling with higher light throughput, higher transmission homogeneity, and a better suppression of light from disturbing wavelength regions. Furthermore, the mode-mixing properties of the optical fibre are enhanced by an improved mechanical treatment. The combined effects lead to spectral residual structures in the range of 5-10×10-5 root mean square (rms; in units of optical density). This represents a reduction of detection limits of typical trace-gas species by a factor of 3–4 compared to previous setups. High temporal stability and reduced operational complexity of this new setup allow the operation of low-maintenance, automated LP-DOAS systems, as demonstrated here by more than 2 years of continuous observations in Antarctica.
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Dissertations / Theses on the topic "Long-term source"

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Dixon, Trevor. "Long-term assessments of some vessel-source marine pollutants." Thesis, University of South Wales, 1997. https://pure.southwales.ac.uk/en/studentthesis/longterm-assessments-of-some-vesselsource-marine-pollutants(23bf3738-6f68-47f6-90b0-549f48be5b2a).html.

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Accidental and deliberate discharges from maritime transportation activities have been widely perceived as major sources of pollution. Preventive and control management strategies have therefore been progressively introduced internationally to reduce and eliminate these inputs to the marine environment. The long-term effectiveness of these measures, applied to vessels operating in the waters around the British Isles, is the research question that has been under investigation by the author since 1971. Following analyses of stakeholders' interests and concerns, and associated information requirements, the aims and objectives of a phased work programme were identified. These focused primarily upon three vessel-source marine pollutants; oil or oily mixtures, packaged dangerous or harmful goods and garbage. After a review of the literature, assessment strategies, designs, methodologies and analytical techniques were devised and applied over varying spatial and temporal scales. A data acquisition and management system, utilising questionnaire returns from 13 reporting organisations, was employed to support an annual survey on marine oil pollution. A similar approach, combined with published information, facilitated a characterisation of packaged chemical incidents around the coastline and changes over time. To determine different sources and other attributes of marine litter, an ocean-focused beach survey design was devised and applied on the shores of the English Channel, Irish Sea, North-East Atlantic Ocean and North Sea. A series of surface drift experiments and an open-water sighting survey provided further information on movements and densities of marine litter in the open sea. Research outputs, including the publications submitted, have been reviewed and identified as authoritative sources of information by the competent authorities and other interested parties. These include the Department of the Environment, Transport and the Regions, European Commission, International Maritime Organisation, Royal Commission on Environmental Pollution, Smithsonian Institution for Short-Lived Phenomena and the United States National Oceanic and Atmospheric Administration.
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Albesher, Abdulaziz. "Trust as a source of long-term adoption of e-government." Thesis, Brunel University, 2016. http://bura.brunel.ac.uk/handle/2438/12368.

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Significant attempts have been made by national governments to provide services and information on the Internet via information and communication technologies. However, the accomplishment of these efforts strongly depends on how the targeted users, such as citizens, trust, use and adopt such services. As a consequence, a common interest in understanding the adoption and diffusion of electronic government has emerged in both developed and developing countries. Several impediments could prevent citizens from adopting e-government services such as trust, which consider as one of the major barriers. Many citizens are reluctant to adopt e-government services due to lack of trust, and this concern are not without merit. Citizens' confidence in government and technology is a salient inducer to the wide distribution of e-government adoption. Several studies that have focused on the adoption of e-government services have suggested that trust is a cornerstone for long-term e-government adoption. Therefore, this study aims to break down the complicated concept of trust to understand the factors that build citizens’ trust and the influence of citizens’ trust on the behavioural intention to use and adopt e-government services in the Kingdom of Saudi Arabia. This study focuses on understanding the impact of trust, trustworthiness and social influence on citizens’ willingness to use and adopt e-government services. In addition, it propose a model of trust that comprised of trustworthiness of government agencies, trust in the Internet, trust propensity, trust in e-government and social influence. To fulfil this aim, a quantitative research approach was employed to explore the role of citizen’s trust in e-government in Saudi Arabia, using a survey. This phase was followed by a qualitative research approach using semi-structured interviews to achieve deep understanding of any outstanding results from the conducted survey. From the data analysis, it is evident that all the exogenous variables—government ability, government benevolence and integrity, trust in Internet, trust propensity and social influence—were found to significantly affect citizens’ trust in e-government services. In addition, citizens' trust in e-government and social influence were found to be significant predictors of citizens' behavioural intentions to use e-government services. This study contributes by providing a conceptual model that is useful for studying citizen’s trust and usage behavioural of e-government services in Saudi Arabia.
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Fernández, Palacios Eva. "Integrated assessment of long-term sulfidogenesis in UASB reactors using crude glycerol as carbon source." Doctoral thesis, Universitat Autònoma de Barcelona, 2020. http://hdl.handle.net/10803/670499.

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Moltes activitats industrials generen emissions que contenen compostos de sofre tant en efluents líquids com emissions gasoses, que majoritàriament són tractades mitjançant processos fisicoquímics. El sulfat es troba generalment a les aigües residuals d’aquestes indústries, com la indústria paperera, la farmacèutica, la minera o l’alimentària. Com a tal, el sulfat no és un compost nociu, però si s’aboca als rius o sistemes de clavegueram, pot generar-se un desequilibri del cicle del sofre. Dins d’aquest cicle, el producte final de la reducció de compostos és el sulfur d’hidrogen (H2S). Aquest compost és corrosiu, olorós i s’ha demostrat que és tòxic en baixes concentracions. Per aquests motius, és necessari desenvolupar alternatives respectuoses amb el medi ambient per a tractar i valoritzar no només les emissions de SO2 sinó també els efluents líquids rics en sofre. A més, podria recuperar-se sofre elemental d’aquests efluents, la qual cosa brindaria l’oportunitat de recuperar recursos en el marc de l’economia circular. Amb aquestes premisses, el projecte SONOVA, en el qual s’emmarca aquesta tesi, va desenvolupar un procés integral de tractament del SOx i el NOx provinent de gasos de combustió mitjançant processos biològics, econòmics, robustos i respectuosos amb el medi ambient que també tenen en compte la reutilització d’energia i recursos al llarg del procés, així com la valorització de residus. El procés proposat es basa en una primera doble etapa per a l’absorció selectiva de SOx i NOx; una segona etapa biològica per a reduir el sulfat de la primera etapa d’absorció a sulfur d’hidrogen (que és l’objectiu d’estudi d’aquesta tesi); i una tercera etapa biològica per a l’oxidació del sulfur d’hidrogen a sofre elemental i la seva posterior recuperació. El desenvolupament de sistemes biològics, com el reactor de llit anaerobi amb flux ascendent (UASB), han estat implementats per al tractament de diverses aigües residuals i per a la digestió anaeròbia. En aquesta tesi, s’ha estudiat l’ús d’aquest tipus de reactor UASB pel tractament d’aigües sintètiques amb sulfat, específicament, es va seleccionar el glicerol cru com a font de carboni i donador d’electrons. Es van utilitzar tant processos fisicoquímics com tècniques de biologia molecular per a obtenir un major coneixement del procés. Es va estudiar la influència de possibles inhibicions i la competència entre els bacteris reductors de sulfat i els metanògens a fi de millorar l’eliminació de sulfat i la producció de sulfur. Es va observar que en les operacions a llarg termini (després de 200 dies aproximadament) els metanògens desapareixen del sistema i els bacteris reductors del sulfat són els que colonitzen. No obstant això, es va observar una acumulació d’acetat a conseqüència de la desaparició dels metanògens, la qual cosa va donar lloc a una pèrdua de la font de carboni a la sortida del reactor que podria haver-se utilitzat per a produir sulfur. Les operacions a llarg termini permeten detectar altres limitacions del sistema. Al llarg de les operacions en UASB dutes a terme en aquesta tesi, es va observar una pèrdua de l’estructura granular i el creixement d’una biopel·lícula no metanogènica ni sulfat reductora no identificada. Aquesta biopel·lícula, anomenada slime al llarg d’aquesta tesi, es va considerar com un factor crucial que afectava el sistema biològic, conferint propietats com la viscositat al llit granular. En conseqüència, es van poder observar problemes relacionats amb la limitació de transferència de matèria, que afectava també l’activitat sulfat reductora dels grànuls i que va conduir a operacions fallides.
Muchas actividades industriales generan emisiones que contienen compuestos de azufre tanto en efluentes líquidos como emisiones gaseosas, que mayoritariamente son tratadas mediante procesos fisicoquímicos. El sulfato se encuentra generalmente en las aguas residuales de estas industrias, como la industria papelera, la farmacéutica, la minera o la alimentaria. Como tal, el sulfato no es un compuesto nocivo, pero si se vierte en los ríos o en los sistemas de alcantarillado, puede generarse un desequilibrio en el ciclo del azufre. Dentro de este ciclo, el producto final de la reducción de compuestos dentro del mismo es el sulfuro de hidrógeno (H2S). Este compuesto es corrosivo, oloroso y se ha demostrado que es tóxico en bajas concentraciones. Por estos motivos, es necesario desarrollar alternativas respetuosas con el medio ambiente para tratar y valorizar no sólo las emisiones de SO2 sino también los efluentes líquidos ricos en azufre. Además, podría recuperarse azufre elemental de esos efluentes, lo que brindaría la oportunidad de recuperar recursos en el marco de la economía circular. Con estas premisas, el proyecto SONOVA, en el cual se enmarca esta tesis, desarrolló un proceso integral de tratamiento del SOx y el NOx proveniente de gases de combustión mediante procesos biológicos, económicos, robustos y respetuosos con el medio ambiente que también tienen en cuenta la reutilización de energía y recursos a lo largo del proceso, así como la valorización de residuos. El proceso propuesto se basa en una primera doble etapa para la absorción selectiva de SOx y NOx; una segunda etapa biológica para reducir el sulfato de la primera etapa de absorción a sulfuro de hidrógeno (que es el objetivo de estudio de esta tesis); y una tercera etapa biológica para la oxidación del sulfuro de hidrógeno a azufre elemental y su posterior recuperación. El desarrollado de sistemas, como el reactor de lecho de lodo anaerobio de flujo ascendente (UASB), han sido implementados para el tratamiento de diversas aguas residuales y para la digestión anaerobia. En esta tesis, se estudió el uso de este tipo de reactor UASB para el tratamiento de aguas sintéticas con sulfato, específicamente, se seleccionó el glicerol crudo como fuente de carbono y donador de electrones. Se utilizaron tanto procesos fisicoquímicos como técnicas de biología molecular para obtener un mayor conocimiento del proceso. Se estudió la influencia de posibles inhibiciones y la competencia entre las bacterias sulfato reductoras y los metanógenos a fin de mejorar la eliminación de sulfato y la producción de sulfuro. Se observó que en las operaciones a largo plazo (después de 200 días aproximadamente) los metanógenos desaparecen del sistema y las bacterias sulfato reductoras son las que lo colonizan. Sin embargo, se observó una acumulación de acetato como consecuencia de la desaparición de los metanógenos, lo que dio lugar a una pérdida de la fuente de carbono en la salida del reactor que podría haberse utilizado para producir sulfuro. Las operaciones a largo plazo permiten detectar otras limitaciones del sistema. A lo largo de las operaciones del UASB llevadas a cabo en esta tesis, se observó una pérdida de la estructura granular y el crecimiento de una biopelícula no metanogénica ni sulfatoreductora no identificada. Esta biopelícula, llamada slime a lo largo de esta tesis, se consideró como un factor crucial que afectaba a nuestro sistema, confiriendo propiedades como la viscosidad al lodo granular. En consecuencia, se pudieron observar problemas relacionados con la limitación de transferencia de materia, que afectaba también a la actividad sulfato reductora de los gránulos y que condujo a operaciones fallidas.
Many industrial activities generate effluents containing sulfur compounds, both as liquid or gaseous emissions, which are mainly treated through physical-chemical processes. Sulfate is generally present in wastewaters coming from paper, pharmaceutical, mining or food processing industries, among others. As such, sulfate is not a harmful compound, but if it is poured into rivers or sewage systems, an imbalance in the overall sulfur cycle can be generated. Inside this cycle, the last product after the reduction of sulfur compounds is hydrogen sulfide (H2S). This compound is corrosive, odorous and toxic at low concentrations. For these reasons, there is a need to develop environmentally friendly alternatives to valorize not only gaseous emissions, such as SO2 emissions, but also S-rich liquid effluents. In addition, a further recovery of elemental sulfur from these effluents could be obtained providing an opportunity to recover resources in the framework of the circular economy. With these premises, the SONOVA project, in which this thesis is enclosed, is based in the development of a comprehensive treatment process to valorize SOx and NOx from flue gases by economical, robust and environmentally friendly biological methods. It also takes into account the reuse of energy and resources along the process as well as residues valorization. The proposed process is based on a first double stage for selective absorption of SOx and NOx; a second biological step for reducing the sulfate from the first absorption stage to hydrogen sulfide (which is the focus of this thesis); and a third biological stage for the oxidation of hydrogen sulfide to elemental sulfur and its subsequent recovery. Biological-based systems, such as Up-flow Anaerobic Sludge Bed (UASB) reactors, have been developed and implemented world-wide to treat many types of wastewater and to produce biogas through anaerobic digestion. In this thesis, the use of an UASB reactor for the treatment of synthetic wastewater with sulfate was studied, specifically selecting crude glycerol as carbon source and electron donor. Both physical-chemical processes and molecular biology techniques were used to get a broad knowledge of the anaerobic process. The influence of possible inhibitions and competition between sulfate reducers and methanogens was studied in order to improve sulfate removal and sulfide production. It was observed that in long-term operations (after 200 days approximately) methanogens were washed out from the system and sulfate reducers colonized the reactor sludge. However, acetate accumulation was observed because of the disappearance of methanogens, leading to a loss of carbon source in the outlet of the reactor that could have been used to produce sulfide in the UASB. Long-term performances allow detecting further limitations of the system. A loss of granular structure and the growth of unidentified non-sulfate reducer, non-methanogenic biofilm was observed during UASB operations along this thesis. This biofilm, called slime substance along this thesis, was found to be a crucial factor affecting our system, conferring properties such as viscosity to the sludge. Consequently, problems related to mass transfer limitations could be observed, affecting as well, the sulfate reducing activity of the granules and leading to failure operations. Finally, since the accumulation of acetate could not be avoided, experiments were designed to pursue the enrichment of acetate degrading sulfate reducing bacteria in serum bottles, with the final objective of improving sulfidogenesis. In addition, isolation of potential acetate-utilizing sulfate reducers was also pursued. Unfortunately, a culture able to perform sulfate reduction with acetate was not developed during the enrichment experiments. Therefore, further research is needed to enhance the operation in terms of organic matter consumption and sulfide productivity in the long-term.
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Edwards, Cristie LeAnne. "Evaluation of long-term phosphorus fertilizer placement, rate, and source, and research in the U.S. Midwest." Diss., Kansas State University, 2017. http://hdl.handle.net/2097/35292.

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Doctor of Philosophy
Department of Agronomy
Dorivar Ruiz Diaz
The appropriate management for phosphorus (P) fertilizer can have significant agronomic, economic, as well as environmental impact. Studies in Kansas have evaluated different management systems to determine best management practices (BMP). The first component of this dissertation is a comprehensive review of tillage system and P fertilizer placement interaction. This review included studies completed in the U.S. Midwest. Results of this review showed greater corn yields with conventional tillage and broadcast applications when soil test P levels (STP) were below 20 mg P kg⁻¹. However, soybean yield was highest in no-till systems with broadcast P fertilizer applications. The second component if this dissertation was a long-term study conducted in Kansas to evaluate the effect of P fertilizer placement on corn and soybean production. Results showed that under strip-tillage, P fertilizer placement significantly affected corn growth, but, seldom resulted in yield response difference among placement methods. Phosphorus application as starter fertilizer at planting showed the most consistent yield response. In addition to the agronomic aspect of this study, the third component of this dissertation consisted of an economic analysis using partial budgets calculated using both fixed and varying prices and costs to compare management practices. With decreased application costs associated with deep banding in strip-tillage system, net returns are greater than broadcast applications. The highest net responses were observed with starter P fertilizer applications. The fourth component of this dissertation included a study evaluating the effects of chelated fertilizer on nutrients, such as P, Fe, Mn, and Zn in soybean. Results from our study showed that both ethylenediamine tetraacetic acid (EDTA)+P and hydroxyethyl ethylenediamine tetraacetic acid (HEDTA)+P resulted in greater concentrations and uptake of Fe and lower Mn uptake in soybean. However, the application of glucoheptonate (GCH)+P had no negative effect on Mn uptake compared to EDTA+P and HEDTA+P. Across locations, EDTA+P and HEDTA+P showed higher yield than GCH+P. The use of long-term studies and comprehensive reviews can provide a unique perspective and better understanding of the most appropriate BMPs for P fertilizer management. Many agronomic and environmental implications of P fertilizer management and the interactions with tillage systems and soils may only become noticeable after multiple years or in a variety of conditions.
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McClure, Clara. "Long-Term Recovery of South Indian Creek Following Interstate Construction." Digital Commons @ East Tennessee State University, 2013. https://dc.etsu.edu/etd/2296.

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The expansion of Interstate 26 from Erwin, TN to the North Carolina border was a project that potentially adversely impacted South Indian Creek because of the steep landscapes and potential for erosion. Several studies have shown the short-term, negative effects of road construction on the water quality of nearby water bodies. Non-point source pollution is the major source of water pollution in the United States. The primary objective of this research is to evaluate the long-term effects of the construction of Interstate 26 on South Indian Creek to see if there has been any ecological recovery. The Environmental Health Sciences Laboratory of East Tennessee State University was contracted by the Tennessee Department of Transportation to collect data from before construction (1991-1992), during construction (1993-1994), and postconstruction (1995-1996). Comparison of microbial enzyme activities and other parameters to present-day (2012-2013) water quality conditions indicate that South Indian Creek has not fully recovered from the effects of the construction of the interstate.
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Lu, Ning. "LONG-TERM EFFECTS OF DIETARY COPPER SOURCE AND LEVEL ON PERFORMANCE AND HEALTH OF SOWS AND PIGLETS." UKnowledge, 2018. https://uknowledge.uky.edu/animalsci_etds/85.

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The objectives of this study were to investigate the long-term effects of feeding increasing supplemental levels (20, 120, or 220 mg/kg) of dietary copper (Cu) as tribasic copper chloride (TBCC) or copper sulfate (CuSO4) on performance, antioxidant status, nutrient digestibility, and trace mineral deposition of sows and piglets; as well as to assess nursery dietary Cu levels on growth performance and response to immunological challenge in nursery pigs from sows fed either high or low Cu diets. In the long-term sow experiment, sows fed TBCC diets had greater adjusted weaning weight for litter and piglet (P < 0.10), as well as adjusted litter and piglet weight gain (P < 0.10) when compared to sows that received CuSO4 diets. Increasing dietary Cu level linearly increased live born piglet weight (P = 0.06). Sows fed TBCC diets had lower apparent total tract digestibility (ATTD) of ether extract (P = 0.01) during late gestation, but greater ATTD of dry matter, nitrogen, and phosphorous during lactation (P < 0.05). Increasing Cu levels linearly increased dry matter digestibility in lactating sows (P = 0.02). Milk from sows fed TBCC diets had a greater concentration of protein (P = 0.02) than that from sows fed CuSO4 diets. Increasing Cu levels increased levels of milk fat and Cu (linear, P < 0.05); but linearly decreased lactose and Zn levels (P < 0.05). Lactating sows fed TBCC diets had a greater activity of Cu/Zn superoxide dismutase (SOD) and ceruloplasmin in serum than those fed CuSO4 diets (P < 0.05). Increasing dietary Cu levels increased total and Cu/Zn SOD activity for lactating sows (linear, P < 0.05). Sows fed TBCC diets had lower concentrations of Cu (P = 0.04), but higher concentrations of iron and manganese (P < 0.05) in the liver, when compared to those fed with CuSO4 diets. In addition, liver Cu concentrations increased with increasing dietary Cu levels (linear and quadratic, P < 0.05). Increasing dietary Cu levels resulted in the elevation of concentrations and contents of Cu in the liver of weanling piglets (linear, P < 0.0001). In the nursery pig experiment, pigs from sows fed 120 mg/kg Cu diets had greater ADG from d 0 to 14 (P < 0.05), and tended to have greater ADG in the overall period (P < 0.08), when compared to pigs from sows fed 20 mg/kg Cu diets. During the lipopolysaccharide challenge period, the challenged pigs from sows fed 120 mg/kg Cu had a greater overall rectal temperature than those from sows fed 20 mg/kg Cu (P = 0.01). Also, the challenged pigs fed with 220 mg/kg Cu diets had greater serum tumor necrosis factor-alpha concentration over time as compared to those fed 20 mg/kg Cu diets (P = 0.03). In summary, the TBCC may be a superior Cu source compared to CuSO4 regarding reproductive performance, and higher dietary Cu levels result in greater birth weight of piglets; furthermore, high Cu levels in sow and nursery diets promote growth performance of nursery pigs and affects their responses to immunological challenge.
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Long, Peter Vincent. "Estimating the long-term health effects associated with health insurance and usual source of care at the population level." Diss., Restricted to subscribing institutions, 2008. http://proquest.umi.com/pqdweb?did=1779835391&sid=18&Fmt=2&clientId=48051&RQT=309&VName=PQD.

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Ozturk, Fatma. "Investigation Of Short And Long Term Trends In The Eastern Mediterranean Aerosol Composition." Phd thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/3/12610373/index.pdf.

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Approximately 2000 daily aerosol samples were collected at Antalya (30°
34&
#900
30.54 E, 36°
47&
#8217
30.54N) on the Mediterranean coast of Turkey between 1993 and 2001. High volume PM10 sampler was used for the collection of samples on Whatman&
#8211
41 filters. Collected samples were analyzed by a combination of analytical techniques. Energy Dispersive X-Ray Fluorescence (EDXRF) and Inductively Coupled Plasma Mass Spectrometry (ICPMS) was used to measure trace element content of the collected samples from Li to U. Major ions, namely, SO42- and NO3-, were determined by employing Ion Chromatography (IC). Samples were analyzed in terms of their NH4+ contents by means of Colorimetry. Evaluation of short term trends of measured parameters have been shown that elements with marine and crustal origin are more episodic as compared to anthropogenic ones. Most of the parameters showed well defined seasonal cycles, for example, concentrations of crustal elements increased in summer season while winter concentrations of marine elements were considerably higher than associated values for summer. Seasonal Kendall statistic depicted that there was a decreasing trend for crustal elements such as Be, Co, Al, Na, Mg, K, Dy, Ho, Tm, Cs and Eu. Lead, As, Se and Ge were the anhtropogenic elements that decreasing trend was detected in the course of study period. Cluster and Residence time analysis were performed to find the origin of air masses arrving to Eastern Mediterranena Basin. It has been found that air masses reaching to our station resided more on Balkans and Eastern Europe. Positive Matrix Factorization (PMF) resolved eight factors influencing the chemical composition of Eastern Mediterranean aerosols as local dust, Saharan dust, oil combustion, coal combustion, crustal-anthropogenic mixed, sea salt, motor vehicle emission, and local Sb factor.
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Bonte, Achim. "Goobi wird Verein." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2013. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-101855.

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Mit der Gründung des Vereins „Goobi. Digitalisieren im Verein“ am 17. September 2012 hat das Wort „Goobi“ eine weitere Bedeutung erhalten. Goobi ist die verbreitetste Open Source-Software zur Produktion und Präsentation von Digitalisaten. Sie ist Markenzeichen für Plattformunabhängigkeit, Modularität, Mandantenfähigkeit, offene Schnittstellen und internationale Standards. Sie steht für umfassende Lösungen zur Boutique- und Massendigitalisierung sowie skalierbare Unterstützungsleistungen durch namhafte Firmen; und seit einigen Wochen ist Goobi nun also auch ein eingetragener Verein mit anerkannter Gemeinnützigkeit. [...]
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Elmendorf, Sarah C., Katherine D. Jones, Benjamin I. Cook, Jeffrey M. Diez, Carolyn A. F. Enquist, Rebecca A. Hufft, Matthew O. Jones, et al. "The plant phenology monitoring design for The National Ecological Observatory Network." WILEY-BLACKWELL, 2016. http://hdl.handle.net/10150/617002.

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Phenology is an integrative science that comprises the study of recurring biological activities or events. In an era of rapidly changing climate, the relationship between the timing of those events and environmental cues such as temperature, snowmelt, water availability, or day length are of particular interest. This article provides an overview of the observer-based plant phenology sampling conducted by the U.S. National Ecological Observatory Network (NEON), the resulting data, and the rationale behind the design. Trained technicians will conduct regular in situ observations of plant phenology at all terrestrial NEON sites for the 30-yr life of the observatory. Standardized and coordinated data across the network of sites can be used to quantify the direction and magnitude of the relationships between phenology and environmental forcings, as well as the degree to which these relationships vary among sites, among species, among phenophases, and through time. Vegetation at NEON sites will also be monitored with tower-based cameras, satellite remote sensing, and annual high-resolution airborne remote sensing. Ground-based measurements can be used to calibrate and improve satellite-derived phenometrics. NEON's phenology monitoring design is complementary to existing phenology research efforts and citizen science initiatives throughout the world and will produce interoperable data. By collocating plant phenology observations with a suite of additional meteorological, biophysical, and ecological measurements (e.g., climate, carbon flux, plant productivity, population dynamics of consumers) at 47 terrestrial sites, the NEON design will enable continental-scale inference about the status, trends, causes, and ecological consequences of phenological change.
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Books on the topic "Long-term source"

1

Hammouda, Imed, Björn Lundell, Tommi Mikkonen, and Walt Scacchi, eds. Open Source Systems: Long-Term Sustainability. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-33442-9.

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Canada, Atomic Energy of. Candu Advanced Fuel Cycles: A Long-Term Energy Source. S.l: s.n, 1985.

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Haubrich, Joseph Gerard. The source and nature of long-term memory in the business cycle. Cambridge, Mass: Alfred P. Sloan School of Management, Massachusetts Institute of Technology, 1989.

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Björn, Lundell, Mikkonen Tommi, Scacchi Walt, and SpringerLink (Online service), eds. Open Source Systems: Long-Term Sustainability: 8th IFIP WG 2.13 International Conference, OSS 2012, Hammamet, Tunisia, September 10-13, 2012. Proceedings. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012.

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Long-term viability of Amtrak and the need for a dedicated funding source: Hearing before the Committee on Finance, United States Senate, One Hundred Fifth Congress, first session on S. 436, April 23, 1997. Washington: U.S. G.P.O., 1998.

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New Jersey. Legislature. Senate. Committee on Energy and Environment. Public hearing before Senate Energy and Environment Committee on Senate Bills 2959, 2960, 2961, and 2973 (long-term funding source for hazardous waste cleanup): May 16, 1985, State House Annex, Room 114, Trenton, New Jersey. [Trenton, N.J.]: The Committee, 1985.

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Haubrich, Joseph Gerard. The sources and nature of long-term memory in the business cycle. Cambridge, MA: National Bureau of Economic Research, 1989.

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Reilly, Thomas E. Effect of seasonal and long-term changes in stress on sources of water to wells. Washington: U.S. G.P.O., 1995.

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National Round Table on the Environment and the Economy (Canada). Economic instruments for long-term reductions in energy-based carbon emissions. Ottawa: National Round Table on the Environment and the Economy, 2005.

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Osborne, Michael J. Silver in the mine: A long-term comprehensive energy plan for the city of Austin. Austin, Tex: Austin Energy Pub., 2003.

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Book chapters on the topic "Long-term source"

1

Damiani, Ernesto, Claudio Agostino Ardagna, and Nabil El Ioini. "Long-term OSS security certifications: An Outlook." In Open Source Systems Security Certification, 1–11. Boston, MA: Springer US, 2008. http://dx.doi.org/10.1007/978-0-387-77324-7_9.

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Alsulami, Bander, Edwin Dauber, Richard Harang, Spiros Mancoridis, and Rachel Greenstadt. "Source Code Authorship Attribution Using Long Short-Term Memory Based Networks." In Computer Security – ESORICS 2017, 65–82. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-66402-6_6.

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Flowers, Tracey C., and James R. Hunt. "Long-Term Release of Perchlorate as a Potential Source of Groundwater Contamination." In Perchlorate in the Environment, 177–88. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/978-1-4615-4303-9_17.

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Lundell, Björn, Jonas Gamalielsson, Stefan Tengblad, Bahram Hooshyar Yousefi, Thomas Fischer, Gert Johansson, Bengt Rodung, et al. "Addressing Lock-in, Interoperability, and Long-Term Maintenance Challenges Through Open Source: How Can Companies Strategically Use Open Source?" In Open Source Systems: Towards Robust Practices, 80–88. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-57735-7_9.

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Sivak, M. N. "Past and Present: Long Term Changes in Atmospheric CO2 Concentration and Plant Strategies for the Optimisation of Photosynthesis." In Carbon Dioxide as a Source of Carbon, 213–36. Dordrecht: Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-3923-3_12.

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Zhao, Jun-Hui, R. D. Ekers, W. M. Goss, K. Y. Lo, and Ramesh Narayan. "Long-Term Variations of the Compact Radio Source Sgr A* at the Galactic Center." In The Center of the Galaxy, 535–41. Dordrecht: Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-009-2362-1_77.

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Vaes, G., and J. Berlamont. "The Use of Continuous Long Term Simulations for the Design and Impact Assessment of Source Control Measures." In Advances in Urban Stormwater and Agricultural Runoff Source Controls, 147–57. Dordrecht: Springer Netherlands, 2001. http://dx.doi.org/10.1007/978-94-010-0532-6_13.

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Meira, William Hitoshi Tsunoda, Leandro Magatão, Susana Relvas, Ana Paula Ferreira Dias Barbosa Póvoa, and Flávio Neves Junior. "A Decomposition Approach for the Long-Term Scheduling of a Single-Source Multiproduct Pipeline Network." In Operational Research, 235–48. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-71583-4_16.

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Yamakami, Toshihiko. "An Exploratory Long-Term Open Source Activity Analysis: Implications from Empirical Findings on Activity Statistics." In IFIP Advances in Information and Communication Technology, 395–400. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-642-13244-5_37.

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Gamalielsson, Jonas, and Björn Lundell. "Long-Term Sustainability of Open Source Software Communities beyond a Fork: A Case Study of LibreOffice." In IFIP Advances in Information and Communication Technology, 29–47. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-33442-9_3.

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Conference papers on the topic "Long-term source"

1

Gebel, Ralf, Olaf Felden, Rudolf Maier, and Sebastian Mey. "Long term performance of the COSY/Jülich polarized ion source." In XVth International Workshop on Polarized Sources, Targets, and Polarimetry. Trieste, Italy: Sissa Medialab, 2014. http://dx.doi.org/10.22323/1.182.0068.

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Pourmir, Arezou M., and Farshad Lahouti. "Joint Source Channel Speech Decoding using long-term residual redundancy." In 2008 16th International Conference on Software, Telecommunications and Computer Networks. IEEE, 2008. http://dx.doi.org/10.1109/softcom.2008.4669505.

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Albesher, Abdulaziz, and Laurence Brooks. "Trustworthiness as a Source of Long-Term e-Government Adoption." In Eighth Saudi Students Conference in the UK. IMPERIAL COLLEGE PRESS, 2015. http://dx.doi.org/10.1142/9781783269150_0005.

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Molnar, Arthur-Jozsef, and Simona Motogna. "Long-Term Evaluation of Technical Debt in Open-Source Software." In ESEM '20: ACM / IEEE International Symposium on Empirical Software Engineering and Measurement. New York, NY, USA: ACM, 2020. http://dx.doi.org/10.1145/3382494.3410673.

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Schutz, Antony, and Dirk Slock. "Blind audio source separation using short+long term AR source models and spectrum matching." In 2011 Digital Signal Processing and Signal Processing Education Meeting (DSP/SPE). IEEE, 2011. http://dx.doi.org/10.1109/dsp-spe.2011.5739196.

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Belchenko, Yu, A. Ivanov, A. Kuznetsov, A. Sanin, V. Savkin, I. Shchudlo, I. Sorokin, and P. Zubarev. "Long-term performance of CW negative hydrogen ion source at BINP tandem accelerator." In Proceedings of the 17th International Conference on Ion Sources. Author(s), 2018. http://dx.doi.org/10.1063/1.5053319.

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Kuuskraa, V. A., and R. E. Wyman. "Deep Coal Seams: An Overlooked Source for Long-Term Natural Gas Supplies." In SPE Gas Technology Symposium. Society of Petroleum Engineers, 1993. http://dx.doi.org/10.2118/26196-ms.

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Kanter, Gert, and Juri Vain. "TestIt: an Open-Source Scalable Long-Term Autonomy Testing Toolkit for ROS." In 2019 10th International Conference on Dependable Systems, Services and Technologies (DESSERT). IEEE, 2019. http://dx.doi.org/10.1109/dessert.2019.8770011.

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Wang, Rui, Georgios Selimis, Roel Maes, and Sven Goossens. "Long-term Continuous Assessment of SRAM PUF and Source of Random Numbers." In 2020 Design, Automation & Test in Europe Conference & Exhibition (DATE). IEEE, 2020. http://dx.doi.org/10.23919/date48585.2020.9116353.

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Belous, O. I., O. N. Sukhoruchko, and A. I. Fisun. "Quasi-optical mm-wave solid-state source having the long-term frequency stability." In 2005 15th International Crimean Conference Microwave and Telecommunication Technology. IEEE, 2005. http://dx.doi.org/10.1109/crmico.2005.1564847.

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Reports on the topic "Long-term source"

1

LaBrecque, Douglas, Russell D. Brigham, Conny Schmidt-Hattenburger, Evan Um, Peter Petrov, and Thomas Daley. Deep Controlled Source Electro-Magnetic Sensing: A Cost Effective, Long-Term Tool for Sequestration Monitoring. Office of Scientific and Technical Information (OSTI), May 2017. http://dx.doi.org/10.2172/1353458.

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Stecher, D., and K. Allison. Residential Ground Source Heat Pumps with Integrated Domestic Hot Water Generation: Performance Results from Long-Term Monitoring. Office of Scientific and Technical Information (OSTI), November 2012. http://dx.doi.org/10.2172/1055370.

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Andersen, James Kengo. Automated High Power Permanent Borehole Seismic Source Systems for Long-Term Monitoring of Subsurface CO2 Containment and Storage. Office of Scientific and Technical Information (OSTI), March 2019. http://dx.doi.org/10.2172/1498640.

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Khayat, M. I., J. L. Anderson, R. E. Battle, and J. March-Leuba. Evaluation of the need for emergency heat exchangers for long term emergency cooling of the Advanced Neutron Source Reactor. Office of Scientific and Technical Information (OSTI), May 1994. http://dx.doi.org/10.2172/10158087.

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Lachowska, Marta, Alexandre Mas, and Stephen Woodbury. Sources of Displaced Workers’ Long-Term Earnings Losses. Cambridge, MA: National Bureau of Economic Research, January 2018. http://dx.doi.org/10.3386/w24217.

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Lachowska, Marta, Alexandre Mas, and Stephen A. Woodbury. Sources of Displaced Workers' Long-Term Earnings Losses. W.E. Upjohn Institute, December 2017. http://dx.doi.org/10.17848/wp18-282.

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Baes, C. F. III. The long-term problems of contaminated land: Sources, impacts and countermeasures. Office of Scientific and Technical Information (OSTI), November 1986. http://dx.doi.org/10.2172/7148724.

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Stoloff, Peter H. Long-Term Health Consequences and Sources of Health Care for RPOWs. Fort Belvoir, VA: Defense Technical Information Center, September 2001. http://dx.doi.org/10.21236/ada402586.

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Haubrich, Joseph, and Andrew Lo. The Sources and Nature of Long-term Memory in the Business Cycle. Cambridge, MA: National Bureau of Economic Research, April 1989. http://dx.doi.org/10.3386/w2951.

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Wiemann, Michael C., David Kretschmann, Alan Rudie, Bruce A. Kimball, and Sherwood B. Idso. Long-term effects of elevated carbon dioxide on sour orange tree specific gravity and anatomy. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory, 2008. http://dx.doi.org/10.2737/fpl-rp-648.

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