Academic literature on the topic 'Removal'

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Journal articles on the topic "Removal"

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Ma, Juan, Chengyao Peng, Akio Takigawa, Shuying Wang, Li Wang, Ningping Ma, Yang Liu, and Yongzhen Peng. "Effect of influent nutrient ratios and temperature on simultaneous phosphorus and nitrogen removal in a step-feed CAST." Water Science and Technology 62, no. 9 (November 1, 2010): 2028–36. http://dx.doi.org/10.2166/wst.2010.518.

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A step-feed cyclic activated sludge technology (CAST) with a working volume of 72 L treating real municipal wastewater was operated to examine the effect of varying ratios of influent COD/TN and COD/P on the nutrient removal. With the increased COD/P and COD/TN, the phosphorus and nitrogen removals exhibited an upward trend. The TN removals had a positive linear correlation with the phosphorus removal efficiencies, mainly because the presence of nitrate in the anaerobic zone negatively affected the phosphorus release thus the nitrogen removal process took priority over the phosphorus removal process to utilize the limited carbon source in the influent in step-feed CAST where simultaneous removals of nitrogen and phosphorus were achieved. By employing the effective step-feed strategy with alternating anoxic/oxic operation, efficient phosphorus and nitrogen removals of 95.8 and 89.3% were obtained with lower influent COD/P and COD/TN ratios of 61.9 and 5.2, respectively. It was also found that lower temperature, e.g. 13 ∼ 16°C, did not deteriorate the phosphorus removal, though the nitrogen removal decreased significantly due to incomplete nitrification. As the temperature increased further, TN removal efficiency increased gradually and nitrogen removal via nitrite pathway was successfully achieved with average nitrite accumulation rate above 90% in the system.
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Bissinger, Oliver, Luisa Biermann, Andreas Kolk, Klaus-Dietrich Wolff, and Carolin Götz. "Osteosynthesis Plate Removal: Patient Benefits and Burdens." Applied Sciences 10, no. 5 (March 6, 2020): 1810. http://dx.doi.org/10.3390/app10051810.

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Maxillofacial fractures are lege artis treated via open reduction and internal fixation in cases of dislocation of the fracture. Plate removal is indicated for various reasons. Whereas symptomatic plate removals are justified, elective removals are questionable. This retrospective monocenter study examined the individual benefit of plate removal from the patient’s point of view and involved 233 patients undergoing plate removal. The data of 233 patients undergoing plate removal were first collected, and then, an individual follow-up questionnaire was created that assessed the personal reasons of patients requesting removal and addressed whether the patient gained any benefit from removal surgery. A total of 43 patients agreed to complete the survey. The complication rate was lower after plate removal (13.3%) than after osteosynthesis (31.8%). The most common indication for removal was surgeon recommendation (51.9%), followed by ongoing symptoms (31.3%) and request by the patient (16.7%). Significantly, more patients underwent symptomatic plate removal after mandibular fractures (46.8%, n = 37, p = 0.001) than fractures elsewhere. According to the survey, 86% (n = 37) of the patients benefitted from plate removal. Although elective plate removal is nowadays controversial, our data provide evidence for a high level of patient satisfaction after removal surgery.
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Michaelowa, Axel, Matthias Honegger, Matthias Poralla, Malte Winkler, Sandra Dalfiume, and Ankita Nayak. "International carbon markets for carbon dioxide removal." PLOS Climate 2, no. 5 (May 8, 2023): e0000118. http://dx.doi.org/10.1371/journal.pclm.0000118.

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International carbon markets are potentially a very powerful tool for mobilizing carbon dioxide removal in line with Paris Agreement ambitions to limit global warming to well below 2°C. This requires reaching global net-zero emissions between 2050 and 2070. Yet, carbon market regulators have not approached removals in a systematic manner. This review assesses the highly fragmented treatment of removals under compliance and voluntary carbon markets, including baseline, credit and cap-and-trade systems. The Kyoto mechanisms and the large voluntary carbon market standards have long focussed on biological removals without inherent storage permanence and only recently started to develop methodologies for removals with geological storage, mineralization or biochar. Driven by high prices for credits from emerging removal technologies and advance market commitment initiatives targeting high permanence removals, various newcomers in voluntary markets are currently establishing their own approaches for generating removal credits. However, they disregard key concepts safeguarding market quality such as additionality, which risks triggering scandals and tainting the entire market for removal credits. Given the diversity of credit prices spanning three orders of magnitude from 1 to 1000, as well as of volumes ranging from a few hundred to tens of millions of credits, the current “gold rush” atmosphere of removal markets needs to quickly be replaced by a coordinated approach, ensuring credibility, and enabling removals to play the required role in reaching global net zero.
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Peiffer, Friederike, Sonia Bejarano, Giacomo Palavicini de Witte, and Christian Wild. "Ongoing removals of invasive lionfish in Honduras and their effect on native Caribbean prey fishes." PeerJ 5 (October 18, 2017): e3818. http://dx.doi.org/10.7717/peerj.3818.

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The invasion of Indo-Pacific lionfish is one of the most pressing concerns in the context of coral reef conservation throughout the Caribbean. Invasive lionfish threaten Caribbean fish communities by feeding on a wide range of native prey species, some of which have high ecological and economic value. In Roatan (Honduras) a local non-governmental organisation (i.e. Roatan Marine Park) trains residents and tourists in the use of spears to remove invasive lionfish. Here, we assess the effectiveness of local removal efforts in reducing lionfish populations. We ask whether reefs subject to relatively frequent removals support more diverse and abundant native fish assemblages compared to sites were no removals take place. Lionfish biomass, as well as density and diversity of native prey species were quantified on reefs subject to regular and no removal efforts. Reefs subject to regular lionfish removals (two to three removals month−1) with a mean catch per unit effort of 2.76 ± 1.72 lionfish fisher−1 h−1 had 95% lower lionfish biomass compared to non-removal sites. Sites subject to lionfish removals supported 30% higher densities of native prey-sized fishes compared to sites subject to no removal efforts. We found no evidence that species richness and diversity of native fish communities differ between removal and non-removal sites. We conclude that opportunistic voluntary removals are an effective management intervention to reduce lionfish populations locally and might alleviate negative impacts of lionfish predation. We recommend that local management and the diving industry cooperate to cost-effectively extend the spatial scale at which removal regimes are currently sustained.
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Basu, O. D., and P. M. Huck. "Removal of humic acid by biofiltration." Water Supply 4, no. 4 (December 1, 2004): 147–54. http://dx.doi.org/10.2166/ws.2004.0072.

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Biofiltration was found to be a possible process for humic acid removal once filters had been acclimated to a synthetic feedwater for 12–16 months. The biofilters were exposed to a synthetic feedwater with influent TOC concentrations ranging from 1.6–4.5 mg L‒1 and a composition of 65% humic acid, 15% formate, 10% acetate and 10% formaldehyde on a carbon mass basis. TOC removals improved from 19 ± 13% (n = 15) to 49 ± 10% (n = 20) in one biofilter and from −11 ± 25% (15) to 51 ± 7% (n = 20) in another biofilter. These increases were found to be statistically significant at the 5% level. The increase in removal was due to an increase in removal of both the readily biodegradable carbons and humics in the biofilters. The humic removal increased from 10 to 36% in biofilter #1 and from 0 to 35% in biofilter #2. At the end of the experiments, formate removals were between 91–94%, acetate removals ranged from 83–87%, and formaldehyde was completely removed in the biofilters. SUVA was not found to be a good indicator of humic removal in the biofilters.
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Lacey, Marcia. "Forget Location, It's all About Removal, Removal, Removal." Journal - American Water Works Association 104, no. 12 (December 2012): 2. http://dx.doi.org/10.1002/j.1551-8833.2012.tb08849.x.

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Ignatius, Dr Gary, Dr Shruti D. Nayak, and Dr Amarnath Shenoy. "Chemomechnical Caries Removal-CMCR." International Journal of Scientific Research 3, no. 4 (June 1, 2012): 1–2. http://dx.doi.org/10.15373/22778179/apr2014/180.

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정, 영환. "미국의 소송이송 간주제도(Removal)." Korea Association of the Law of Civil Procedure 27, no. 1 (February 28, 2023): 149–84. http://dx.doi.org/10.30639/cp.2023.2.27.1.149.

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Comparative civil procedure scholars often encounter foreign civil procedure different from their own. To understand and translate terminology of the foreign civil procedure have been challenges. For such work, analyzing functions and roles of the specific procedure is crucial. ‘Removal’ in U.S. civil procedure is one example of such foreign procedure. This article examines procedural aspects of the removal. Part II of this article reviews concept, definition, and grounds of removal by comparing it with transfer and remand that have similar functions. Part III examines i) party-related requirements of removal; ii) claim-related requirements; and iii) timing of filing notice of removal. Part IV looks into the procedure of removal with more details; and Part V describes effects of removal. In Part VI, based on functions and roles of removal in U.S. civil procedure, this article provides suggestions for Korean civil procedure with regard to enhancing defendants’ defenses in choice of jurisdiction. Such recommendations include i) recognition of the parties’ right to move for transfer when the litigation is filed at a court that does not have a jurisdiction; and ii) ways to use transfer of civil litigations more actively in intellectual property cases. This article provides an opportunity to contemplate on what to learn from foreign civil procedure to improve Korean counterpart.
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Gaspard, Scott F., and Donald J. Gaspard. "Retrievable Inferior Vena Cava Filters Are Rarely Removed." American Surgeon 75, no. 5 (May 2009): 426–28. http://dx.doi.org/10.1177/000313480907500515.

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There has been an increasing nationwide trend of inferior vena cava (IVC) filter placement over the past 3 years. Most of these have been the newer, removable variety. Although these are marketed as retrievable, few are removed. The purpose of this study was to examine the practice pattern of IVC filter placement at Huntington Hospital. This study is a retrospective chart review of all IVC filter placements and removals between January 1, 2004, and December 31, 2006. The primary data points include indication for placement, major complications (migration, caval thrombosis, pulmonary embolus [PE]), attempted removal, and successful removal. Three hundred ten patients received IVC filters at our institution during this period. Eighty-four were placed in 2004, 95 in 2005, and 131 in 2006. Of those, only 12 (3.9%) were documented permanent filters, whereas the remainder (298) were removable. Of the retrievable filters placed, only 11 (3.7%) underwent successful removal. There were four (1.3%) instances in which the filter could not be removed as a result of thrombus present within the filter and two (0.67%) in which removal was aborted as a result of technical difficulty. Our use of IVC filters has increased steadily over the last 3 years. Despite the rise in use of “removable” filter devices, few are ever retrieved. Although IVC filter insertion appears an effective method of PE prevention, it comes at a cost, both physiological and monetary. It would be wise to devise more stringent criteria to identify those patients in the various populations who truly require filter placement and to be cautious in altering our indications for placement.
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Sruthi, Gudla, M. Mansoor Ahammed, and Abhipsa R. Makwana. "Effect of source water/wastewater quality on bacterial removal during electrocoagulation." Water Science and Technology 77, no. 5 (January 17, 2018): 1460–68. http://dx.doi.org/10.2166/wst.2018.024.

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Abstract Bacterial removal during electrocoagulation (EC) was investigated employing samples from four different water/wastewater sources, namely, greywater, river water, secondary treated sewage and tap water spiked with Escherichia coli. Effects of current density and electrolysis time on the bacterial removal with aluminium electrodes were evaluated. For greywater, river water and secondary treated sewage, total coliform and E. coli removal efficiencies were not significantly different for the tested samples and varied in the range of 2.22–2.53 log10 units at a current density of 1 mA/cm2 and electrolysis time of 30 min. Higher removals up to 3.80 log10 units could be obtained at higher current density of 5 mA/cm2. Heterotrophic bacterial removals were higher compared with coliforms for the tested samples. Further, higher removal was obtained with spiked E. coli in tap water compared with naturally occurring coliforms in other samples. A comparison of bacterial removal by chemical coagulation (CC) employing alum at optimum dose with that by EC with 1 mA/cm2 current density and 30 min electrolysis time showed significantly higher removal by EC (2.22–2.53 log10 removal) compared with CC (1.40–1.80 log10 removal) for the three tested samples. Upon storage up to 48 h, no significant regrowth/decay of organisms was observed in the EC-treated samples.
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Dissertations / Theses on the topic "Removal"

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Gong, Han. "Interactive shadow removal." Thesis, University of Bath, 2015. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.665432.

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Shadows are ubiquitous in image and video, and their removal is of interest in both Computer Vision and Graphics. In this thesis, four methods for interactive shadow removal from single images are presented. Their improvements are made in user interaction, quality and robustness of shadow removal. We also show our state-of-the-art ground truth data set with variable scene categories for shadow removal and applications for shadow editing and its extension to video data processing.
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Gomez, Ryan. "Orbital Debris Removal." Digital Commons at Loyola Marymount University and Loyola Law School, 2017. https://digitalcommons.lmu.edu/etd/395.

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Space or orbital debris are polluting the space environment and are a result of derelict satellites and rockets and the debris resulting from their explosions and collisions with one another. According to the ESA and NASA, there are more than 23,000 items in orbit that are bigger than 10 cm (4 inches) across, and hundreds of thousands of items between 1 cm and 10 cm (0.4 to 4 inches) across. Most debris is concentrated at an altitude of 500 miles {800km) in LEO, posing the highest risk. In 2014, the ISS had to move three times to avoid collision with space debris. Debris travels on average at 25,000 km (15,600 miles) per hour, so even an object of small mass has the potential to cripple a satellite or punch a hole in the International Space Station (ISS). Being hit by a 'sugar-cube' of space debris is the equivalent of standing next to an exploding hand-grenade. 5cm or larger debris as 5cm is the lower limit of today's tracking capability and 5cm or larger has the ability to cause catastrophic damage. Studies have concluded that debris in LEO will grow over time due to collisions between large objects. Spent rocket upper stages and unused satellites can produce more fragments. This project explores the various concepts and pursuits available today on tackling the space debris problem. The system proposed in this paper is a space-based laser system named SHARK. The mission will detect and remove debris classified as catastrophic to current and future missions. The emitted laser will vaporize a thin film of matter off the surface of debris. The resulting high-speed plasma would act like a rocket plume, nudging the debris downward to eventually burn up in Earth's atmosphere. The spacecraft will also have an onboard debris tracking and targeting system to work in conjunction with the laser.
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Wong, Hiu Man. "Removal of pathogens by membrane bioreactor : removal efficiency, mechanisms and influencing factors /." View abstract or full-text, 2004. http://library.ust.hk/cgi/db/thesis.pl?CIVL%202004%20WONGH.

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Thesis (M. Phil.)--Hong Kong University of Science and Technology, 2004.
Includes bibliographical references (leaves 93-102). Also available in electronic version. Access restricted to campus users.
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Henderson, Rita Kay. "PosiDAF for algae removal." Thesis, Cranfield University, 2007. http://dspace.lib.cranfield.ac.uk/handle/1826/4472.

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During algac blooms, coagulation is frequently unsuccessful resulting in poor flotation duc to complex algal character. 11iis thesis cxplorcs tlic link between algal character and conventional treatment and the potential for developing morc appropriatc algac trcatmcnt tcclinologics. Specifically, dissolvcd air flotation (DAF) that has bccn adaptcd by dosing cationic clicmicals to the saturator to modiry bubbic surfaccs, such that it docs not rcly on coagulation, is invcstigatcd. 1'his proccss is tcrmcd PosiDAF. Analysis of dissolved algogcnic organic mattcr (AOM) extracted from problcmatic species enabled investigation of the impact of morphology and AOM on coagulation- flocculation-flotation. Both increasing surface area and charge density of algae systcrns, werc rclatcd to increasing coagulant dcmand. Application of the appropriate coagulant dcmand ensured removal of all thrcc components - cclls, AOM and coagulant. Maintaining the zcta potential bct-%vccn -10 mV and +2 mV ensured optimum rcmoval was obtained. PosiDAF trials were conducted by dosing chemicals that had previously been shown to alter bubble charge, including co3gulant, surfactant and polymer, to the saturator. Coagulants were unsuitable for use in PosiDAF as they did not remain at the bubble surface. Highly hydrophobic, cationic surfactants were observed to remove cells according to a theoretical model, such that removal improved with increasing bubbic: particic ratio and with cell size. The polymer, polyDADNIAC, achieved greater removal cfficiencies than those predicted theoretically, attributed to an increase in the swept volume of the bubble. However, polyDADMAC was sensitive to changes in AOM composition. A chemical that combines attributes of both surfactant and polyDADMAC may overcome the barriers to PosiDAF implementation.
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Tripathi, Sachchida Nand. "Removal of charged aerosols." Thesis, University of Reading, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.325074.

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Dong, Chun. "Binder removal in ceramics." Thesis, Massachusetts Institute of Technology, 1990. http://hdl.handle.net/1721.1/14101.

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Mori, Brett Cote John Rowland Kyle Wells Micah. "Chip removal tool project /." Click here to view, 2009. http://digitalcommons.calpoly.edu/mesp/9.

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Thesis (B.S.)--California Polytechnic State University, 2009.
Project advisor: James Meagher. Title from PDF title page; viewed on Jan. 20, 2010. Includes bibliographical references. Also available on microfiche.
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Gustafsson, Olof. "Nanoparticle Removal and Brownian Diffusion by Virus Removal Filters: Theoretical and Experimental Study." Thesis, Uppsala universitet, Nanoteknologi och funktionella material, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-335802.

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This study aims to examine the throughput of nanoparticles through a Cladophora cellulose based virus removal filter. The effect of Brownian motion and flow velocity on the retention of 5 nm gold nanoparticles, 12.8 nm dextran nanoparticles and 28 nm ΦX174 bacteriophages was examined through MATLAB simulations and filtration experiments. Modeling of Brownian motion at different flow velocities was performed in MATLAB by solving the Langevin equation for particle position and velocity for all three types of particles. The motion of all three particle types was shown to be constrained at local flow velocities of 1∙10-2 m/s or greater. The constraint was greatest for ΦX174 bacteriophages, followed by dextran particles and then gold particles as a result of particle diameter. To verify the effect experimentally, virus removal filters were prepared with a peak pore width of 23 nm. Filtration experiments were performed at different flux values where gold and dextran particles did not exhibit any difference in retention between fluxes. However, a significant amount of gold and dextran particles were removed by the filter despite being smaller than the measured pore size. A decrease in retention with filtrated volume was observed for both particle types. Filtration of ΦX174 bacteriophages exhibited a difference in retention at different fluxes, where all bacteriophages where removed at a higher flux. The results from both simulations and experiments suggest that the retentive mechanism in filtering is more complex than what can be described only by size exclusion sieving, Brownian diffusion and hydrodynamic constraint of particles.
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Popple, Tina. "The behaviour, fate and removal of pharmaceuticals in biological nutrient removal sewage treatment." Thesis, University of Portsmouth, 2013. https://researchportal.port.ac.uk/portal/en/theses/the-behaviour-fate-and-removal-of-pharmaceuticals-in-biological-nutrient-removal-sewage-treatment(7b67f73d-d777-4a25-9b7b-0ae3edcc58dc).html.

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Pharmaceuticals that are intended for human use are frequently detected in the aquatic environment. This is predominantly from the excretion of pharmaceuticals by patients, in their urine and faeces, which subsequently enter sewage treatment plants. Sewage treatment provides a final opportunity for pharmaceutical removal, prior to discharge into the environment, however, removal is often incomplete. Once in the environment, pharmaceuticals have the potential to cause effects on aquatic organisms. Sewage treatment plants, that are designed to meet statutory discharge consents for nutrients, are increasing in number. These plants, capable of biological nutrient removal, are understudied for the removal efficiencies of pharmaceuticals. This thesis presents research findings on the behaviour, fate and removal of selected pharmaceuticals in a bespoke laboratory rig, and in operational biological nutrient removal sewage treatment plants. Pharmaceuticals possessing a broad range of physical and chemical properties were selected for this research, they included: salicylic acid, caffeine, propranolol, diclofenac and carbamazepine. Sensitive chromatographic methods were developed to quantify the analytes in a laboratory sequencing batch reactor rig and in operational plants. Radiolabelled 14C isotopes of salicylic acid, caffeine, propranolol and diclofenac were dosed into the laboratory rig. The compounds exhibited different behaviours during a simulated sewage treatment process. Salicylic acid and caffeine produced the highest amount of biodegradation, with 25.2% and 14.5% of the radiolabel mineralised to 14CO2 in the rig. However, parent degradation is likely to have been higher, since neither compound could be detected in the effluent by specific chemical analysis. These findings were replicated in the operational sewage treatment plants, with > 97% removal of both pharmaceuticals, in all three plants investigated. Propranolol and diclofenac were less affected by biodegradation processes, and produced 3.7% and 0.2% mineralisation, respectively, in the laboratory rig. Furthermore, 33.8% of the radioactivity associated to 14C propranolol was detected in the rig solids. These compounds showed insignificant removal from two operational plants; 6.8% and 20.9% (propranolol) and -0.9% and -39.4% (diclofenac). Monitoring of operational plants showed that concentrations of propranolol were highest in the activated sludge tanks at all three sites. This supports the findings from the rig, that propranolol interacts with the sludge, which might be more significant in plants with lower sludge wastage rates, such as sequencing batch reactors. This could have implications for the terrestrial environment, and therefore, terrestrial risk assessments should be refined accordingly. Monitoring of the operational sewage treatment plants highlighted the widespread presence, and recalcitrant behaviour, of carbamazepine during biological sewage treatment. Future work should focus on investigating the mechanisms of removal, of this pharmaceutical in the laboratory sequencing batch reactor. This work highlighted the problems biological systems face in effectively removing recalcitrant pharmaceuticals. Advanced wastewater treatment should be considered, if complete removal is desired.
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Wallace, Laura. "Condit dam removal : a decision-making comparison with removal of Elwha River dams." Thesis, Kansas State University, 2014. http://hdl.handle.net/2097/17659.

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Master of Arts
Department of Geography
Lisa M.B. Harrington
While environmental concerns have played a secondary role in dam removal rationales thus far, the Condit and Elwha removal projects could signal a change in governmental and public priorities in dam management in the United States (Born et al. 1998; Bednarek 2002). For this research, I compared two dam removal projects designed to restore native salmon runs in two rivers in Washington State: the Condit Dam on the White Salmon River and the Elwha and Glines Canyon Dams on the Elwha River. This thesis asks: given choices of preserving dams that produce clean electricity and the well-established lake-based habitats created by their reservoirs or re-establishing a free-flowing river to reestablish fish and wildlife populations, how are decisions made, and what does the process and outcome mean to local communities? Research interview data was used in combination with policy documents to answer three research questions: 1) What factors affect decision-makers’ and other stakeholders’ support for (or rejection of) dam removal? 2) How did stakeholders’ perceptions and opinions play a role in the decision-making process? and 3) What can we learn from problems and successes evident from the dam removal decision processes? The main factors influencing both the Condit Project and the Elwha Project were environmental (salmon restoration), political (meeting legislative requirements for fish passage), and economic (finding the least cost fish passage alternative). The primary motivation for both projects was salmon restoration via the provision of federally mandated fish passage. The possibility of regaining a valuable resource spurred Tribal, federal, and state agencies to advocate for the removal alternative. Dam owners in both cases desired the least cost option, resulting either in their consent to removal (Condit Project) or selling the dams and relinquishing responsibility to the federal government (Elwha Project). Both took over two decades to complete and were removed in 2011. Perceptions of the relative importance of removal/retention options and dissatisfaction with the decision-making process led to polarization of the communities affected by the dam removals and contributed to the 20+ year project timelines. In order to promote good will and understanding between decision makers and stakeholders, two lessons can be learned from the Condit and Elwha Projects: 1) actively seek to include both proponents and opponents in decision-making and 2) establish robust communication among stakeholders and decision makers. Additionally, preliminary evidence indicates that dam removal does result in movement of salmonids to river reaches that had been blocked by dams, and dam removal may also lead to unintended consequences related to local environmental quality and resource access, such as short term air quality concerns and longer term effects on groundwater availability.
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Books on the topic "Removal"

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Leustig, Jack. Removal. Burbank, Calif: WArner Brothers, 1994.

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(Firm), Philip C. Duschnes. Removal sale. New York, N.Y: Philip C. Duschnes, Inc., 1985.

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Brinkmann, Robert, and Graham A. Tobin. Urban Sediment Removal. Boston, MA: Springer US, 2001. http://dx.doi.org/10.1007/978-1-4615-1515-9.

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Bignon, J. Y. Sulphur dioxide removal. Manchester: UMIST, 1991.

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Books, Time-Life, ed. Cleaning & stain removal. Alexandria, VA: Time-Life Books, 1990.

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Goldberg, David J. Laser Hair Removal. 2nd ed. New York: Informa Healthcare, 2008.

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Keep Providence Beautiful (Organization : R.I.), ed. Graffiti removal manual. Providence, RI: Keep Providence Beautiful, 1986.

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Hill, Pamela. Advanced hair removal. Clifton Park, NY: Thomson Delmar Learning, 2008.

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United States. Environmental Protection Agency. Office of Emergency and Remedial Response., ed. Superfund removal procedures. Washington, D.C: Office of Emergency and Remedial Response, U.S. Environmental Protection Agency, 1990.

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Ellis, S. A. Sulfur Dioxide removal. Manchester: UMIST, 1997.

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Book chapters on the topic "Removal"

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Gerlach, Alice. "Removal." In Dignity, Women, and Immigration Detention, 112–41. London: Routledge, 2022. http://dx.doi.org/10.4324/9780367823153-5.

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Weik, Martin H. "removal." In Computer Science and Communications Dictionary, 1469. Boston, MA: Springer US, 2000. http://dx.doi.org/10.1007/1-4020-0613-6_16068.

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Neal, Frank. "Removal." In Black '47, 217–38. London: Palgrave Macmillan UK, 1998. http://dx.doi.org/10.1057/9780230372658_8.

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Bährle-Rapp, Marina. "removal." In Springer Lexikon Kosmetik und Körperpflege, 473. Berlin, Heidelberg: Springer Berlin Heidelberg, 2007. http://dx.doi.org/10.1007/978-3-540-71095-0_8838.

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Mirzoeff, Nicholas. "Removal." In An Introduction to Visual Culture, 149–66. 3rd ed. London: Routledge, 2023. http://dx.doi.org/10.4324/9780429280238-12.

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Levitt, Jacob O. "Shave Removal." In Safety in Office-Based Dermatologic Surgery, 31–40. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-13347-8_5.

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Chianese, Angelo. "Fines Removal." In Industrial Crystallization Process Monitoring and Control, 175–84. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2012. http://dx.doi.org/10.1002/9783527645206.ch15.

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McFadyen, Iain, and Samantha Gallivan. "Metal Removal." In Intramedullary Nailing, 95–101. London: Springer London, 2014. http://dx.doi.org/10.1007/978-1-4471-6612-2_9.

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Pfeifer, Christian, and Axel Gänsslen. "Implant Removal." In Pelvic Ring Fractures, 559–66. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-54730-1_40.

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Mercurio, Mary Gail. "Hair Removal." In Encyclopedia of Women’s Health, 547–49. Boston, MA: Springer US, 2004. http://dx.doi.org/10.1007/978-0-306-48113-0_183.

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Conference papers on the topic "Removal"

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Šarko, Julita, and Aušra Mažeikienė. "Investigation of Sorbents for Phosphorus Removal." In 11th International Conference “Environmental Engineering”. VGTU Technika, 2020. http://dx.doi.org/10.3846/enviro.2020.620.

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Nowadays, the problem of water pollution with phosphorus compounds is especially important. Wastewater treatment plants do not always meet the strict requirements for the residual total phosphorus concentration – 1 mg/l in the treated wastewater. Usually individual wastewater treatment plants have a poorer removal of phosphorus from the wastewater because they are more sensitive to fluctuations in wastewater flow and environmental conditions. Research results in the scientific literature shows that only 30–50% of the phosphorus is removed from the wastewater by conventional methods. Additional wastewater treatment is recommended for higher phosphorus removal efficiency achievement. One of the ways to remove phosphorus from wastewater is filtration through sorbents filter media. The efficiency of three sorbents – Filtralite P, foam-glass and crushed shells to remove phosphorus from biologically treated wastewater is investigated in this article. A phosphate phosphorus concentration was reduced by filtering wastewater through sorbents filter media during the experiment. Concentrations of treated wastewater pollutants, filtration rate, efficiency of sorbents to remove phosphorus from the wastewater were measured and evaluated. Experiment results showed that phosphate phosphorus was effectively removed by Filtralite P sorbent (removal efficiency 97–98%), less effective were foam-glass (removal efficiency 66–95%) and crushed shells sorbents (removal efficiency 39–50%).
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Lin, Huangxing, Yihong Zhuang, Yue Huang, Xinghao Ding, Xiaoqing Liu, and Yizhou Yu. "Noise2Grad: Extract Image Noise to Denoise." In Thirtieth International Joint Conference on Artificial Intelligence {IJCAI-21}. California: International Joint Conferences on Artificial Intelligence Organization, 2021. http://dx.doi.org/10.24963/ijcai.2021/115.

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In many image denoising tasks, the difficulty of collecting noisy/clean image pairs limits the application of supervised CNNs. We consider such a case in which paired data and noise statistics are not accessible, but unpaired noisy and clean images are easy to collect. To form the necessary supervision, our strategy is to extract the noise from the noisy image to synthesize new data. To ease the interference of the image background, we use a noise removal module to aid noise extraction. The noise removal module first roughly removes noise from the noisy image, which is equivalent to excluding much background information. A noise approximation module can therefore easily extract a new noise map from the removed noise to match the gradient of the noisy input. This noise map is added to a random clean image to synthesize a new data pair, which is then fed back to the noise removal module to correct the noise removal process. These two modules cooperate to extract noise finely. After convergence, the noise removal module can remove noise without damaging other background details, so we use it as our final denoising network. Experiments show that the denoising performance of the proposed method is competitive with other supervised CNNs.
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As'ari, M. A., U. U. Sheikh, and S. A. R. Abu-Bakar. "Object's Shadow Removal with Removal Validation." In 2007 IEEE International Symposium on Signal Processing and Information Technology. IEEE, 2007. http://dx.doi.org/10.1109/isspit.2007.4458149.

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Boren, Richard M., Charles F. Hammel, and Mark R. Bleckinger. "Multi-Pollution Removal System Using Oxides of Manganese." In ASME 2004 Power Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/power2004-52081.

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Pending legislation suggests there will be a need for increased removal of NOx, SO2, Hg (Mercury) and PM 2.5 from coal-fired power plants. Current commercial technologies only handle one of these pollutants so several different technologies must be combined to remove all of these pollutants. The Pahlman™ Process developed by Enviroscrub Technologies removes NOx, SO2 and Hg in one step. The Pahlman™ Process is a sorbent-based technology, which utilizes a proprietary Oxides of Manganese compound to remove SO2, NOx and Hg. The sorbent is spray-dried into the exhaust duct downstream of the current particulate control device. Spray drying is used to control the particle size (40 micron mean) and increases the surface area of the particle (∼300 m2 /gram). The sorbent is collected in a fabric filter baghouse, which serves two purposes: (1) it captures the entrained sorbent and (2) provides additional residence time for gas-solid contact between the sorbent and the target pollutants. The loaded sorbent is removed from the baghouse and routed to regeneration. Sorbent regeneration occurs in an aqueous solution under temperature and pressure while the solution is maintained in the proper pH and Eh ranges. The reacted manganese is oxidized back to its starting state and sulfate and nitrate byproduct compounds are produced. The insoluble oxides of manganese are then filtered out of the solution and returned to the spray-dryer for re-use. The soluble sulfate and nitrate compounds are separated and the nitrate by-products are sold as fertilizer. The sulfates are further processed and re-used in the regeneration process with excess sulfate by-products sold as fertilizer or used to produce sulfuric acid. Testing over the last three years has resulted in consistent SO2 removal of over 99% and NOx removal of greater than 95%. Testing performed in June 2003 at DTE Energy’s River Rouge Power Station Unit#3 in Detroit, Michigan showed removal rates of >99% for SO2, >98% for NOx and 97% for oxidized Mercury (Hg2+). Mercury testing was performed by the Energy and Environmental Research Center (EERC) and paid for by DTE Energy and the DOE. Testing performed in December 2003 through January 2004 at Minnesota Power’s Boswell Energy Center Unit#4 in Cohasset, Minnesota showed removal rates of >98% for SO2, >94% for NOx and 99.2% for elemental (Hg0) and 94% for total Mercury (HgT).
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ŠARKO, Julita, and Aušra MAŽEIKIENĖ. "Removal of ammonium nitrogen from wastewater by tertiary treatment." In 12th International Conference “Environmental Engineering”. VILNIUS TECH, 2023. http://dx.doi.org/10.3846/enviro.2023.862.

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Ammonium nitrogen present in treated wastewater effluent can cause eutrophication. Wastewater treatment plants do not always meet the strict requirements for the residual total nitrogen concentration – 10 mg/L in the treated wastewater. Additional wastewater treatment is recommended for higher nitrogen removal efficiency achievement. One of the ways to remove nitrogen compounds from wastewater is filtration through sorbents filter media. Zeolite is used to remove nitrogen compounds from water. Zeolite is known for its high surface area and high porosity. Zeolite adsorbs part of organic compounds and ammonium ions, so their concentration in the filtrate decreases. An ammonium nitrogen concentration was reduced by filtering wastewater through sorbents filter media during the experiment in real conditions. Concentrations of treated wastewater pollutants, filtration rate, efficiency of zeolite sorbent to remove ammonium nitrogen from the wastewater were measured and evaluated. Experiment results showed that ammonium nitrogen was effectively removed by zeolite sorbent (removal efficiency 66–99%), from wastewater by tertiary treatment.
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Lewis, Janelle Branch, Adam Dassey, Daryl Grubb, and Scott Marshall. "NORM Scale Removal Using a High-Power Fiber Laser Beam Delivery." In SPE Western Regional Meeting. SPE, 2021. http://dx.doi.org/10.2118/205400-ms.

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Abstract In oil and gas operations, there is a potential for NORM scale to accumulate on process piping and equipment. This scale can be removed prior to recycling or disposal of the material, yet common removal methods may be costly, time consuming, or create large volumes of secondary waste streams that must be managed. The feasibility of using a laser beam delivery to remove NORM scale was investigated because of its potential to reduce the time and cost associated with scale removal without creating large secondary waste streams. Results from this study indicate that a laser beam delivery could be an effective method to remove NORM scale from a steel surface. Background levels of alpha and beta surface contamination and gamma exposure rate were achieved for certain pipe sections when applying a laser power of at least 5 kW. Alternative laser powers, linear speeds, or incident angles may optimize the removal efficiency for thicker scales or scales with higher surface contamination or gamma exposure rates.
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Baytamo, Ton John L., Katrina C. Perez, and Michelle C. Almendrala. "PASIG RIVER WATER PURIFICATION BY ULTRAFILTRATION: APPLICATION OF DUAL COAGULATION AND ADSORPTION FOR ENHANCED TREATMENT PROCESS." In 22nd International Multidisciplinary Scientific GeoConference 2022. STEF92 Technology, 2022. http://dx.doi.org/10.5593/sgem2022v/3.2/s12.17.

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The treatment of the Pasig River water using ultrafiltration is a promising solution that may help address issues on public water quality and availability around Metro Manila, Philippines. To improve the treatment performance, ultrafiltration can be applied with coagulation and adsorption. In this study, the effectiveness of ultrafiltration in treating the Pasig River water with dual coagulation and adsorption was investigated by determining the percent removal of TDS, turbidity, Escherichia coli (E. coli), nitrate, pH, copper, chromium, lead, total hardness, true color, and odor. The jar test results show that a dual coagulant mixture of 30% organic polyDADMAC solution and 70% inorganic Aluminum Chlorohydrate (ACH) solution, and 10 mL/L was optimal. A 98.01% turbidity removal was achieved under these conditions, and it was able to remove E.coli. Ultrafiltration using the hollow-fiber membrane has an optimum transmembrane pressure of 19 psig; this stage has effectively treated the river water with percent removals of 74.67%, 17.60%, 28.94%, 36.13%, and 50.00% for turbidity, TDS, nitrates, hardness, and true color, respectively. Coagulation and chemical cleaning before operation also substantially increased its ability to filter quicker. Further, adsorption using Granular Activated Carbon (GAC) was proven to be a good post-treatment, reducing the water quality parameters at removals of 19.98%, 11.37%, and 34.07% removal for TDS, nitrates, and hardness, accordingly; the odor also was removed after the GAC adsorption. This study also found that the Pasig River water contains very low concentrations of copper, chromium, and lead, all maintained throughout the water treatment process.
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Ghosh, Kripabandhu, and Arnab Bhattacharya. "Stopword Removal." In the 10th Annual ACM India Compute Conference. New York, New York, USA: ACM Press, 2017. http://dx.doi.org/10.1145/3140107.3140125.

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Göde, Nils. "Clone removal." In the 4th International Workshop. New York, New York, USA: ACM Press, 2010. http://dx.doi.org/10.1145/1808901.1808906.

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Wu, Hongjun, Kun Huang, Ju Liu, Bao Zhang, Jiquan Liu, Change Kong, Jianxin Shen, et al. "Research and Application of Compound Plugging Removal Technology in HTHP Condensate Gas Well." In International Petroleum Technology Conference. IPTC, 2021. http://dx.doi.org/10.2523/iptc-21787-ms.

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Abstract Dabei and Dina 2 gas fields located in Tarim Oilfield are HTHP and high production condensate gas fields. The formation temperature is 136°C, the formation pressure is 105MPa, the gas production of single well is 40×104m3/d~100×104m3/d, and the condensate production is 35t/d~86t/d. After the HTHP condensate gas well started production, the oil production pressure continues to fluctuate and decline due to the wellbore plugging. By 2019, more than 80% of the HTHP condensate gas wells have the wellbore plugging problem, gas production of some wells reduced over 50%, a few wells even shut in, the normal production of condensate gas well is seriously affected. In some condensate gas wells of Dabei gas field, organic plugging substances are obtained in the wellhead and the nearby oil pipes during the well passing and other operations. Wax is detected and analyzed as the plugging substance. In addition, inorganic plugging substances are obtained at the bottom of the production pipe in the wells with serious plugging, through the coiled tubing dredging and overhaul operations, which are mainly concentrated at the reducing tool or screen pipe. The content of inorganic scale in the plug is 60% ~ 90%, and the rest is a small amount of formation sand. In view of the problem of wax deposition on the upper part of the wellbore and plugging the tubing of the condensate gas well, the condensate oil samples and wellbore wax samples were obtained on site. The experiment analysis confirmed that the condensate oil dewax temperature is 37.1°C, which can provide a reference for judging whether the wellbore had wax deposition. In order to solve the problem of wax deposition in the wellbore, the laboratory evaluation experiment of wax remover optimization was carried out to optimize the wax remover with good wax dissolving effect. In view of the inorganic scale plugging at the lower part of the wellbore, the research on the scaling mechanism of high-pressure well bore was clarified, and the high dissolution and low corrosion solution acid system was optimized through the laboratory experiment. For the wells with wax deposition and scale compound blockage, but have flow channel, a compound plugging removal technology is formed, which is to inject wax remover to remove the wax plug in the upper part of the well, and then inject acid system to remove the scale plug in the lower part of the well. For the wells with serious well plugging, a compound plugging removal technology is formed, which is to dredge the well through coiled tubing to form a flow channel, and then inject acid solution to remove the scale plug in the lower part of the well. Three wells have successfully implemented wax and scale compound plug removal, and the average single well productivity after plug removal is 2.7 times of that before plug removal, At present, the production of DB2-A Well has been stable for 22 months after plug removal. three wells have successfully implemented "coiled tubing dredging + wellbore acid plugging removal" complex plug removal, and the production capacity has been successfully restored after operation, the average single well tubing pressure is 60.4MPa, and the total daily natural gas production is 178×104m3/d. HTHP condensate gas well wellbore compound plug removal technology can remove the organic and inorganic plugging in the wellbore to the high efficiency recovery of the well.
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Reports on the topic "Removal"

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Aubert, James Henry, Patricia Sue Sawyer, and Sarah Kathryn Leming. Component compatibility of a removal process for removable encapsulants. Office of Scientific and Technical Information (OSTI), December 2005. http://dx.doi.org/10.2172/883138.

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Ruschau. L52186 Effective Methods of Removing Existing Coating. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), September 2005. http://dx.doi.org/10.55274/r0011355.

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The effectiveness of different coating removal techniques during investigative excavations was studied by a combination of laboratory testing and field investigation. During repair and investigative pipeline digs, a disproportional amount of time and effort is often spent removing old existing coating so as not to damage the pipe underneath. The necessity for examining the steel surface under the coating requires careful but thorough coating removal or else the important features on that surface will be lost. The objectives of this work were the following: Determine the relative effectiveness of existing techniques used to remove coating at bellhole digs Utilize advanced or novel techniques to realize an improvement in efficiency Catalog efficient coating removal methods with different mainline coatings. Verify the best removal methods in a field test
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McCabe, Kenneth, Diana Cochran, and Gail Nonnecke. Cluster Removal on La Crescent and Leaf Removal on Marquette Grapevines. Ames: Iowa State University, Digital Repository, 2017. http://dx.doi.org/10.31274/farmprogressreports-180814-1596.

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Philip, C. V., W. W. Pitt, and C. A. Beard. Investigations in gallium removal. Office of Scientific and Technical Information (OSTI), November 1997. http://dx.doi.org/10.2172/548601.

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Leonhardt, D., S. G. Walton, D. D. Blackwell, D. P. Murphy, and R. F. Fernsler. Photoresist Removal in LAPPS. Fort Belvoir, VA: Defense Technical Information Center, November 2002. http://dx.doi.org/10.21236/ada409109.

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Vane, Leland, A. L. Wood, Gary A. Pope, and Edwin E. Tucker. Surfactant Enhanced DNAPL Removal. Fort Belvoir, VA: Defense Technical Information Center, August 2001. http://dx.doi.org/10.21236/ada607317.

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Schulte, Ralph. KKG Group Paraffin Removal. Office of Scientific and Technical Information (OSTI), December 2001. http://dx.doi.org/10.2172/793354.

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White, Brandy J., James B. Delehanty, Baochuan Lin, and George P. Anderson. Proanthocyanidin-based Endotoxin Removal. Fort Belvoir, VA: Defense Technical Information Center, January 2014. http://dx.doi.org/10.21236/ada594469.

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Cotter, Brian, and Scott Smith. Expeditionary Rubber Removal Capability. Fort Belvoir, VA: Defense Technical Information Center, December 2006. http://dx.doi.org/10.21236/ada464365.

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Pett-Ridge, J., S. Kuebbing, A. Mayer, S. Hovorka, H. Pilorge, S. Baker, S. Pang, et al. Roads to Removal: Options for Carbon Dioxide Removal in the United States. Office of Scientific and Technical Information (OSTI), August 2023. http://dx.doi.org/10.2172/2301853.

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