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Articles de revues sur le sujet « KF. Planning, Design, Removal »

Auteur : Grafiati

Publié le 10 mars 2023

Mis à jour le 31 juillet 2025

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1

Saeed, Anwar Ameen Hezam, Noorfidza Yub Harun, Suriati Sufian, et al. "Modeling and Optimization of Biochar Based Adsorbent Derived from Kenaf Using Response Surface Methodology on Adsorption of Cd2+." Water 13, no. 7 (2021): 999. http://dx.doi.org/10.3390/w13070999.

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Cadmium is one of the most hazardous metals in the environment, even when present at very low concentrations. This study reports the systematic development of Kenaf fiber biochar as an adsorbent for the removal of cadmium (Cd) (II) ions from water. The adsorbent development was aided by an optimization tool. Activated biochar was prepared using the physicochemical activation method, consisting of pre-impregnation with NaOH and nitrogen (N2) pyrolysis. The influence of the preparation parameters—namely, chemical impregnation (NaOH: KF), pyrolysis temperature, and pyrolysis time on biochar yield

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Torzoni, Saverio, Carlo Pisano, and Fabrizio Battisti. "Form and Structure of the Knowledge Framework for Urban Planning: Methodological Approach and Assessment Issues: The Case Study of the Municipality of Fondi Urban Plan." Land 12, no. 6 (2023): 1201. http://dx.doi.org/10.3390/land12061201.

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Analysing the formation of the Knowledge Framework (KF) for the Municipality of Fondi, a medium size municipality in central Italy, this research explains the methodology used to describe and interpret its specific territorial condition, aiming to delineate a series of operative guidelines for further implementations in other contexts. The article deals with comparisons with several urban planning approaches, transposing them to the study area, through the filter provided by the approach of Regional Design. The objective of the research is to produce a comprehensive KF for urban planning conta

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Murali, G., M. Murugan, K. Arunkumar, P. V. Elumalai, D. Mohanraj, and S. Prabhakar. "Investigation and Process Parameter Optimization on Wire Electric Discharge Machining of Aluminium 6082 Alloy." Advances in Materials Science and Engineering 2022 (September 24, 2022): 1–16. http://dx.doi.org/10.1155/2022/5119056.

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Wire electrical discharge machining (WEDM) is an unconventional machining process that is being extensively used in the aerospace,medical devices, die, tooling, and automotive industries for machining high-hardness materials with conductivity. In the present work, WEDM of aluminium 6082 alloys was carried out since it influences diversified applications in manufacturing industries. The WEDM process includes an extensive number of variables that influence its execution. However, based on the literature survey, three process parameters such as pulse-on time (PTON), pulse-off time (PTOFF), and wi

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Yang, Yuqin, Jan van Aalst, and Carol Chan. "Examining Online Discourse Using the Knowledge Connection Analyzer Framework and Collaborative Tools in Knowledge Building." Sustainability 13, no. 14 (2021): 8045. http://dx.doi.org/10.3390/su13148045.

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This study examines the problem of the fragmentation of asynchronous online discourse by using the Knowledge Connection Analyzer (KCA) framework and tools and explores how students could use the KCA data in classroom reflections to deepen their knowledge building (KB) inquiry. We applied the KCA to nine Knowledge Forum® (KF) databases to examine the framework, identify issues with online discourse that may inform further development, and provide data on how the tools work. Our comparisons of the KCA data showed that the databases with more sophisticated teacher–researcher co-design had higher

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Abuabara, Andrés, Carlos Diaz-Uribe, William Vallejo, Freider Duran, and Edgar Mosquera-Vargas. "Kinetic and Thermodynamic Study of Cationic Dye Removal Using Activated Biochar Synthesized from Prosopis juliflora Waste." ChemEngineering 9, no. 3 (2025): 64. https://doi.org/10.3390/chemengineering9030064.

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In this study, we synthesized an activated biochar using Prosopis juliflora waste as a carbon source. Citric acid (CA) was used as the chemical agent for biochar activation. The removal of methylene blue (MB) using the fabricated biochar was investigated. A response surface methodology (RSM) experimental design was employed to evaluate the effects of synthesis parameters, including the temperature and the CA/biochar mass ratio, on the biochar’s MB removal efficiency. The impact of adsorption parameters, such as the biochar dosage, pH, MB concentration, and ionic strength, was also examined. Ki

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Husna, Asmaul, Md Rashedul Kabir Mondol, Md Rabiul Hasan, and Md Yeamin Hossain. "Estimation of population structure, growth and condition of Parastromateus niger in the Bay of Bengal." Acta Biologica Szegediensis 66, no. 1 (2022): 1–6. http://dx.doi.org/10.14232/abs.2022.1.1-6.

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Black pomfret (Parastromateus niger) is one of the major commercial species of pomfret fishery in Bangladesh. This study illustrates the population structure (Length Frequency Distribution, LFD), relationship between length and weight (LWR), relationships between length and length (LLRs), Fulton’s condition factor (KF) and relative weight (WR) of P. niger in the Bay of Bengal (BoB). A total of 225 P. niger were collected from the four locations during January to December 2020. LFD analysis indicates three length classes 21-27 cm, 30-32 cm and 35-37 cm, respectively. This species showed isometr

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Wu, Yingbao, Biaoyi Wang, Ziyi Ou, et al. "Research on Enhancing Domestic Wastewater Treatment in the Heterotrophic Nitrification–Aerobic Denitrification-Based Anaerobic/Oxic Biofilm System." Water 17, no. 2 (2025): 162. https://doi.org/10.3390/w17020162.

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Traditional wastewater treatment processes still encounter challenges such as the limited treatment efficiency and excessive greenhouse gas emissions, which restrict their application in environmentally sustainable practices. This study developed an A/O biofilm system and assessed the impact of inoculating the system with the heterotrophic nitrification–aerobic denitrification (HN–AD) strain Alcaligenes faecalis WT14 on pollutant removal efficiency and greenhouse gas emissions. A continuous monitoring experiment was conducted over 140 days, comparing the system inoculated with WT14 (the TWT14

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Lalwani, Vishal, Priyaranjan Sharma, Catalin Iulian Pruncu, and Deepak Rajendra Unune. "Response Surface Methodology and Artificial Neural Network-Based Models for Predicting Performance of Wire Electrical Discharge Machining of Inconel 718 Alloy." Journal of Manufacturing and Materials Processing 4, no. 2 (2020): 44. http://dx.doi.org/10.3390/jmmp4020044.

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This paper deals with the development and comparison of prediction models established using response surface methodology (RSM) and artificial neural network (ANN) for a wire electrical discharge machining (WEDM) process. The WEDM experiments were designed using central composite design (CCD) for machining of Inconel 718 superalloy. During experimentation, the pulse-on-time (TON), pulse-off-time (TOFF), servo-voltage (SV), peak current (IP), and wire tension (WT) were chosen as control factors, whereas, the kerf width (Kf), surface roughness (Ra), and materials removal rate (MRR) were selected

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Antonieti, Caio César, and Yovanka Pérez Ginoris. "Removal of Cylindrospermopsin by Adsorption on Granular Activated Carbon, Selection of Carbons and Estimated Fixed-Bed Breakthrough." Water 14, no. 10 (2022): 1630. http://dx.doi.org/10.3390/w14101630.

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Climate change and the increase in the availability of nutrients in aquatic environments have increased the occurrence of cyanobacterial blooms which can produce cyanotoxins such as cylindrospermopsin (CYN). Activated carbon adsorption have been proved to be efficient for CYN removal. In the present study, a carbon with high CYN adsorption capacity was identified between two granular activated carbons. For this carbon was estimated the operating time of a full-scale granular activated carbon column under different empty bed contact times (EBCT). The fixed-bed breakthrough was estimated using t

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Urgun-Demirtas, M., K. R. Pagilla, T. E. Kunetz, J. P. Sobanski, and K. P. Law. "Nutrient removal process selection for planning and design of large wastewater treatment plant upgrade needs." Water Science and Technology 57, no. 9 (2008): 1345–48. http://dx.doi.org/10.2166/wst.2008.223.

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A protocol to select nutrient removal technologies that can achieve low nutrient effluents (total nitrogen (TN) &lt; 5 mg/L and total phosphorus (TP) &lt; 0.5 mg/L) was developed for different wastewater treatment plant (WWTP) sizes based on the research conducted during a Water Environment Research Foundation funded project. The adaptable protocol includes technology and cost assessment of feasible (pre-screened) nutrient removal technologies that are being successfully implemented at full scale. The information collected from the full scale nutrient removal plants to develop this pro

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MacCollum, David. "Design-Based Safety." Journal of System Safety 53, no. 2 (2017): 5. http://dx.doi.org/10.56094/jss.v53i2.86.

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The role of system safety engineers is to ensure the inclusion of design-based safety so that projects are completed ahead of schedule and under budget. Removal of hazards during planning and project design includes examining each piece of equipment to be used on the construction project. Most serious construction injuries and deaths caused by workplace accidents can be traced to inherent hazardous design defects. Construction workers are often unaware of these defects and, even if they are aware, they have no authority to improve on the design.

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Šolić, Marko, Snežana Maletić, Marijana Kragulj Isakovski, et al. "Comparing the Adsorption Performance of Multiwalled Carbon Nanotubes Oxidized by Varying Degrees for Removal of Low Levels of Copper, Nickel and Chromium(VI) from Aqueous Solutions." Water 12, no. 3 (2020): 723. http://dx.doi.org/10.3390/w12030723.

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Functionalized multiwalled carbon nanotubes (MWCNTs) have drawn wide attention in recent years as novel materials for the removal of heavy metals from the aquatic media. This paper investigates the effect that the functionalization (oxidation) process duration time (3 h or 6 h) has on the ability of MWCNTs to treat water contaminated with low levels of Cu(II), Ni(II) and Cr(VI) (initial concentrations 0.5–5 mg L−1) and elucidates the adsorption mechanisms involved. Adsorbent characterization showed that the molar ratio of C and O in these materials was slightly lower for the oxMWCNT6h, due to

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Iqbal, Nida, Sami A. Al-Hussain, Fozia Batool, et al. "Alginate-Based Sustainable Green Composites of Polymer and Reusable Birm for Mitigation of Malachite Green Dye: Characterization and Application for Water Decontamination." Sustainability 15, no. 4 (2023): 3194. http://dx.doi.org/10.3390/su15043194.

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Environmental sustainability appraisal of adsorption for exclusion of the malachite green toxic dye was the center of attention in this work. The influenced goals were to analyze the consequences of novel composites fabricated by sodium alginate with guar gum and birm (SA@GG@B composites) by ion gelation. This work not only explains the feasibility of the sorbent and its application for the removal of dye stuff but also proclaimed various effects of different parameters affecting the removal efficiency. Adsorption processes were carried out in the batch process. The composite was characterized

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Singh, Rajendra, Fei Zhao, Qian Ji, Jothivel Saravanan, and Dafang Fu. "Design and Performance Characterization of Roadside Bioretention Systems." Sustainability 11, no. 7 (2019): 2040. http://dx.doi.org/10.3390/su11072040.

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In the current study, three roadside bioretention systems with different configurations were constructed to investigate their pollutant removal efficiency in different rainfall recurrence intervals. The bioretention systems (referred as units) (unit A: 700 mm height material without submerged zone; unit B: 400 mm height material with 300 mm submerged zone; unit C: 400 mm height material without submerged zone) were used to conduct the rainfall events with uniform 120 min rainfall duration for 2-, 5-, 10-, 15-, and 30-year recurrence intervals. Results reveal that the gradual increase of rainfa

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Ilyas, Huma, and Eric van Hullebusch. "Role of Design and Operational Factors in the Removal of Pharmaceuticals by Constructed Wetlands." Water 11, no. 11 (2019): 2356. http://dx.doi.org/10.3390/w11112356.

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This study evaluates the role of design, operational, and physicochemical parameters of constructed wetlands (CWs) in the removal of pharmaceuticals (PhCs). The correlation analysis demonstrates that the performance of CWs is governed by several design and operational factors (area, depth, hydraulic loading rate, organic loading rate, and hydraulic retention time), and physicochemical parameters (dissolved oxygen, temperature, and pH); the removal efficiency of about 50% of the examined PhCs showed a significant correlation with two or more factors. Plants contributed significantly in the remo

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Clancy, K. G., and D. J. Carroll. "Key Issues in Planning Submarine Outfalls for Sydney, Australia." Water Science and Technology 18, no. 11 (1986): 159–70. http://dx.doi.org/10.2166/wst.1986.0151.

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This paper describes three large tunnelled submarine ocean outfalls, planned to safely discharge primary effluent from about two-thirds of the regional population of Sydney, Australia into deep ocean water. Environmental and investigation aspects are dealt with briefly. Interesting aspects of design and construction planning are described. The design includes the handling of special hydraulic problems such as dilution and salt water removal. The construction planning foreshadows the extensive use of tunnelling machines including roadheaders and a full face tunnel boring machine. The offshore e

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LIAN, FENG-LI, and PING-CHIH LIN. "MODULE DESIGN WITH COMMUNICATION AND RECONFIGURATION FOR SNAKE-TYPE MODULAR ROBOTIC SYSTEMS." International Journal of Information Acquisition 07, no. 03 (2010): 205–23. http://dx.doi.org/10.1142/s0219878910002166.

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In this paper, the module hardware design is addressed and a wireless communication algorithm is proposed for the motion coordination and reconfiguration planning of snake-type robots. The objective of the modular design and the planning algorithm is on self-intelligence and distributed feature for the adding of new modules and the removal of broken parts during motion reconfiguration. Particularly, the automatic connector and wireless communication are implemented on each module, and a planning algorithm for motion reconfiguration is proposed for determining the physical position and acting r

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Li, Shi Long, and Xian Feng Zhao. "Processing of Grinder Plate with Bone Chips Removal Facilities Based on CAD/CAM." Applied Mechanics and Materials 217-219 (November 2012): 1831–34. http://dx.doi.org/10.4028/www.scientific.net/amm.217-219.1831.

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Rotary meat grinders with bone chip removal facilities are advanced meat mincing machinery, characterized by undesirable hard-particle separation from ground meat during grinding operations. The grinder plate with an involute spiral groove to facilitate removal of hard particles is developed. The perforated plate with bone chips removal facilities has a unique design including catcher groove, bone-collection chamber and bone-removal passage. Its 3D modeling in Pro/E software, machining process planning, milling path optimization, simulation based on MasterCAM and compiling post program were in

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Abduljauwad, Sahel N., and Ali M. Dakkak. "Selection of Liner Materials and Design of Hazardous Water Facilities in Saudi Arabia." Sultan Qaboos University Journal for Science [SQUJS] 6, no. 2 (2001): 21. http://dx.doi.org/10.24200/squjs.vol6iss2pp21-34.

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Rapid development in Saudi Arabia has produced a broad spectrum of wastes. In the last two decades, several refineries and petrochemical industries have been established. These industries have produced sludges and other toxic wastes which need proper planning for their handling and disposal. This paper covers design and selection of liner materials for two hazardous waste disposal sites. One of them is located in the Eastern Province of Saudi Arabia, while the second one is located in the Western part. The paper will present complete design details of the natural compacted and geosynthetic soi

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Austin, Gary. "DESIGN AND PERFORMANCE OF BIORETENTION BEDS FOR REMOVAL OF STORMWATER CONTAMINANTS." Journal of Green Building 7, no. 1 (2012): 17–27. http://dx.doi.org/10.3992/jgb.7.1.17.

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Ilyas, Huma, and Eric D. van Hullebusch. "The Influence of Design and Operational Factors on the Removal of Personal Care Products by Constructed Wetlands." Water 12, no. 5 (2020): 1367. http://dx.doi.org/10.3390/w12051367.

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This research presents the correlation analysis of selected design and operational factors (depth, area, hydraulic and organic loading rate, and hydraulic retention time), and physicochemical parameters (pH, temperature, and dissolved oxygen) of constructed wetlands (CWs) with the removal efficiency of personal care products (PCPs). The results demonstrated that the removal efficiencies of the studied PCPs exhibit a significant correlation with two or more of these factors. The role of plants in the removal of PCPs is demonstrated by the higher performance of planted compared with unplanted CW

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Maeda, T., S. Kinoshita, S. Sato, and A. Ujiie. "Design of a Snow Melting Tank Using Treated Wastewater." Water Science and Technology 29, no. 1-2 (1994): 319–26. http://dx.doi.org/10.2166/wst.1994.0679.

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Iwamizawa City, which is located at lat. 43 deg N. and long. 141 deg E., on Hokkaido Island, in the northern part of Japan, experiences heavy snowfall during winter. Every year, the City disposes 610,000 tons of snow collected from its roads and spends 573 million yen for snow removal and 48 million yen for maintenance of the snow dumping sites. However, these dumping sites have, at present, almost reached the limit of their capacities. It is for this reason that snow melting and disposal with treated wastewater was planned. In planning the equalization tank at Nankoen Wastewater Treatment Pla

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Lee, Huaming, Jon Scott, Jon Sims Williams, and David Cox. "Symbolic calculus for volumetric reasoning about process plans." Artificial Intelligence for Engineering Design, Analysis and Manufacturing 10, no. 3 (1996): 183–98. http://dx.doi.org/10.1017/s0890060400001542.

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AbstractA symbolic calculus for reasoning about process plans is proposed in this paper. The main focus of attention is the selection and sequencing of material removal operations for components in accordance with the design geometry. This is a central issue in automated process planning. The proposed symbolic calculus defines a computational formalism for symbolic manipulation of feature volumes, so that reasoning about volumetric removals can be treated in a logical manner by using well-defined procedures of algorithmic synthesis. This potentially encourages a more generic approach to the au

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Yılmaz, Özgün, Nabil Aouf, Elena Checa, Laurent Majewski, and Manuel Sanchez-Gestido. "Thermal analysis of space debris for infrared-based active debris removal." Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering 233, no. 3 (2017): 811–22. http://dx.doi.org/10.1177/0954410017740917.

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In space, visual-based relative navigation systems suffer from dynamic illumination conditions of the target (eclipse conditions, solar glare, etc.) where most of these issues are addressed by advanced mission planning techniques. However, such planning would not be always feasible or even if it is, it would not be straightforward for active debris removal missions. On the other hand, using an infrared-based system would overcome this problem, if a guideline to predict infrared signature of space debris based on the target thermal profile could be provided for algorithm design and testing. Spa

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Hernández Cegarra, Antonio Tomás, Teresa Gómez-Morte, José Antonio Pellicer, et al. "A Comprehensive Strategy for Stepwise Design of a Lab PROTOTYPE for the Removal of Emerging Contaminants in Water Using Cyclodextrin Polymers as Adsorbent Material." International Journal of Molecular Sciences 25, no. 5 (2024): 2829. http://dx.doi.org/10.3390/ijms25052829.

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The significant environmental issue of water pollution caused by emerging contaminants underscores the imperative for developing novel cleanup methods that are efficient, economically viable, and that are intended to operate at high capacity and under continuous flows at the industrial scale. This study shows the results of the operational design to build a prototype for the retention at lab scale of pollutant residues in water by using as adsorbent material, insoluble polymers prepared by β-cyclodextrin and epichlorohydrin as a cross-linking agent. Laboratory in-batch tests were run to find o

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Gharabaghi, B., A. Fata, T. Van Seters, et al. "Evaluation of sediment control pond performance at construction sites in the Greater Toronto Area." Canadian Journal of Civil Engineering 33, no. 11 (2006): 1335–44. http://dx.doi.org/10.1139/l06-074.

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Receiving water quality concerns associated with increased construction activities in recent years in the Greater Toronto Area has prompted the Toronto and Region Conservation Authority (TRCA) to evaluate design criteria for sediment control ponds employed during the construction period. Stormwater management ponds located in the towns of Richmond Hill and Markham were monitored to obtain stormwater runoff quantity and influent-effluent quality data during site development. The ponds were designed and constructed in accordance with the Ontario Ministry of the Environment Stormwater management

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Wang, Mian, Julia Zhu, and Xinwei Mao. "Removal of Pathogens in Onsite Wastewater Treatment Systems: A Review of Design Considerations and Influencing Factors." Water 13, no. 9 (2021): 1190. http://dx.doi.org/10.3390/w13091190.

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Conventional onsite wastewater treatment systems (OWTSs) could potentially contribute to the transmission of infectious diseases caused by waterborne pathogenic microorganisms and become an important human health concern, especially in the areas where OWTSs are used as the major wastewater treatment units. Although previous studies suggested the OWTSs could reduce chemical pollutants as well as effectively reducing microbial contaminants from onsite wastewater, the microbiological quality of effluents and the factors potentially affecting the removal are still understudied. Therefore, the desi

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Chen, Xinhan, Zhen Hu, Yijin Zhang, et al. "Removal Processes of Carbamazepine in Constructed Wetlands Treating Secondary Effluent: A Review." Water 10, no. 10 (2018): 1351. http://dx.doi.org/10.3390/w10101351.

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It is widely believed that constructed wetlands (CWs) own great potentiality as polishing wastewater treatment methods for removing carbamazepine (CBZ). Although the typical CBZ removal efficiencies in CWs are quite low, the CBZ removal performance could be improved to some extend by optimizing the CW design parameters. A comparison of current relevant studies indicates that horizontal sub-surface flow CWs (HSSF-CWs) and hybrid wetlands are attracting more interest for the treatment of CBZ wastewater. According to CBZ’s physicochemical properties, substrate adsorption (25.70–57.30%) and macrop

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Carvalho Porto de Freitas, Rodrigo Falcão, Ana Larisse Carneiro Pereira, and Adriana da Fonte Porto Carreiro. "CAD/CAM technology for fabrication of reduction guide for RPD parallel guiding planes preparation: A dental technique." Primary Dental Journal 11, no. 4 (2022): 66–70. http://dx.doi.org/10.1177/20501684221132976.

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Introduction: The preparation of parallel axial wall guide planes in abutment teeth is essential for providing a correct path of insertion and removal axis for removable partial dentures (RPDs). With the introduction of digital resources, new alternatives to the conventional method can be used to manufacture guide preparation for guide planes. Aims: To describe the use of computer-aided design/computer-aided manufacturing (CAD/CAM) technology for the manufacture of guide planes to guide the reduction of the axial walls of abutment teeth according to the insertion and removal axis of the RPD. M

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Khalfaoui, Amel, Mohamed Nadir Khelifi, Anouar Khelfaoui, et al. "The Adsorptive Removal of Bengal Rose by Artichoke Leaves: Optimization by Full Factorials Design." Water 14, no. 14 (2022): 2251. http://dx.doi.org/10.3390/w14142251.

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Currently, the dye industry is increasing its production as a consequence of the growing need for their products in different manufacturing sectors, such as textiles, plastics, food, paper, etc... Thereafter, these industries generate very large volumes of effluents contaminated by these dyes, which require proper removal treatment before final discharge of the effluents into the environment. In this study, artichoke leaves were used as an economical and eco-friendly bio-adsorbent for Bengal Rose (BR) dye removal. Bio-adsorbent obtained from artichoke leaves was ground to powder size. The resu

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Yuan, Fengwei, Gengzhen Ren, Qian Deng, and Xiangjiang Wang. "Steam Generator Maintenance Robot Design and Obstacle Avoidance Path Planning." Sensors 25, no. 2 (2025): 514. https://doi.org/10.3390/s25020514.

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To solve the issue of inconvenient and dangerous manual operation during the installation and removal of the main pipe plugging plate in the steam generator in nuclear power plants, a ten-degree-of-freedom plugging robot was designed in the present study that includes a collaborative robotic arm coupled with a servo electric cylinder. By establishing a joint coordinate system for the robot model, a D-H parameter model for the plate plugging robot was established, and the forward and inverse kinematics were solved. The volume level approximate convex decomposition algorithm was used to fit the

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Phillips, James A., and Samuel J. Smidt. "Modeling Improved Performance of Reduced-Height Biosand Water Filter Designs." Water 12, no. 5 (2020): 1337. http://dx.doi.org/10.3390/w12051337.

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Point-of-use biosand water filters are widely distributed in undeveloped or developing regions due to their water treatment success and low-cost design, but two gaps remain in the basic technology: (1) the filter body is oversized relative to its contaminant removal performance, and (2) the heavy design largely excludes difficult to reach locations in need of clean water solutions. Here, we model design modifications to the v.10 Centre for Affordable Water and Sanitation Technology biosand filter using a reduced filter height, increased biolayer area, and conserved reservoir volume. We compare

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Isnaini, Mohammad Mi’radj, and Keiichi Shirase. "Review of Computer-Aided Process Planning Systems for Machining Operation – Future Development of a Computer-Aided Process Planning System –." International Journal of Automation Technology 8, no. 3 (2014): 317–32. http://dx.doi.org/10.20965/ijat.2014.p0317.

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The need to integrate the design and machining stages has become an important issue since the introduction of the Computer-Integrated Manufacturing (CIM) concept. The development of the Computer-Aided Process Planning (CAPP) system has been recognized to have made a significant contribution toward fulfilling the requirement for an integrated planning system. This paper reviews the development of the CAPP system, particularly for the metal removal process. Previous reviews on CAPP are gathered and discussed to show the evolution stage of CAPP in general. Main research topics that contribute to

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Zhu, Jiang, Keisuke Nomura, Tomohisa Tanaka, and Yoshio Saito. "Tool Path Planning Assist System for Freeform Surface Machining." Key Engineering Materials 447-448 (September 2010): 321–25. http://dx.doi.org/10.4028/www.scientific.net/kem.447-448.321.

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With the rapid development of CG technology and 3D scanning technology, it is easy to design the freeform surface more complexly, but it also makes it difficult to machine such complex freeform surface rapidly and accurately. In this paper, a tool path planning assist system for freeform surface machining is presented. Differing from general CAM systems, in this developed tool path planning assist system, the tool path is generated based on the features of the CAD model, and focus on the applicability of material removal process. New machining strategies for both rough cutting process and fini

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Yang, Wulin, Hongya Fu, Zhongxi Shao, Hongquan Zu, Qiang Wu, and Chuan Chen. "Energy Analysis of a Space-Energy Driven Laser-Ablation Debris Removal System." Sustainability 14, no. 3 (2022): 1794. http://dx.doi.org/10.3390/su14031794.

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Space-energy driven laser-ablation debris removal is a feasible way to address the worsening space debris environment. Energy analysis is crucial for the design and run of a space-energy driven laser-ablation debris removal system. This study details the energy analysis of a space-energy driven laser-ablation debris removal system as affected by laser energy, frequency and range. The results show that the laser irradiation time and energy efficiency are decreased with increases in the laser energy and frequency, and the energy efficiency in the case of different planes is significantly lower t

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Bradford, Andrea, and Bahram Gharabaghi. "Evolution of Ontario's Stormwater Management Planning and Design Guidance." Water Quality Research Journal 39, no. 4 (2004): 343–55. http://dx.doi.org/10.2166/wqrj.2004.047.

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Abstract Ontario's Stormwater Management, Planning and Design Manual released in March 2003 integrates some of the advancements made in stormwater management since the 1994 version of the Manual was published. Perhaps the most significant update is the recognition of in-stream erosion control and water balance objectives in addition to flood and water quality objectives for stormwater management. Specific design criteria which would allow these objectives to be achieved are not set out, but procedures that can assist in the development of criteria based on local watershed and receiving water c

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Song, Xiaojun, Per Magnus Ehde, and Stefan E. B. Weisner. "Effects of Water Depth and Phosphorus Availability on Nitrogen Removal in Agricultural Wetlands." Water 11, no. 12 (2019): 2626. http://dx.doi.org/10.3390/w11122626.

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Excess nitrogen (N) from agricultural runoff is a cause of pollution in aquatic ecosystems. Created free water surface (FWS) wetlands can be used as buffering systems to lower the impacts of nutrients from agricultural runoff. The purpose of this paper was to evaluate critical factors for N removal in FWS wetlands receiving high nitrate (NO3−) loads from agriculture. The study was performed in 12 experimental FWS wetlands in southern Sweden, receiving drainage water from an agricultural field area. The effects of water depth (mean depth of 0.4 m and 0.6 m, respectively) and phosphorus (P) avai

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Liao, Guangrong, Xiaojuan Yang, Suhua Lou, Weijie Qin, Jin Liu, and Xuanjiao Hong. "Multi-objective Capacity Planning for Expressway Microgrid Considering Photovoltaic Panel Dust Removal Maintenance." Journal of Physics: Conference Series 2588, no. 1 (2023): 012003. http://dx.doi.org/10.1088/1742-6596/2588/1/012003.

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Abstract The increasing passenger volume and the rapid development of the electric vehicle industry make the electricity consumption of the expressway service area grow day by day. It is of great significance to study the planning and design method of the microgrid in the expressway service area. This paper established a wind-photovoltaic-storage capacity planning model for the microgrid in expressway service areas, which considered the dust removal maintenance of photovoltaic panels. The multi-objective optimization problem was solved by the improved fast non-dominated sorted genetic algorith

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Absil, Carlos Ortega, Lorenzo Ricciardi, Carlo Marilena Di, et al. "GTOC 9: Results from University of Strathclyde (team Strath++)." Acta Futura, no. 11 (January 9, 2018): 57–70. https://doi.org/10.5281/zenodo.1139246.

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The design and planning of space trajectories is a challenging problem in mission analysis. In the last years global optimisation techniques have proven to be a valuable tool for automating the design process that otherwise would mostly rely on engineers’ expertise. The paper presents the optimisation approach and problem formulation proposed by the team Strathclyde++ to address the problem of the 9th edition of the Global Trajectory Optimisation Competition. While the solution approach is introduced for the design of a set of multiple debris removal missions, the solution idea can be ge

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Liu, Bodi, and Neil Armitage. "The Link between Permeable Interlocking Concrete Pavement (PICP) Design and Nutrient Removal." Water 12, no. 6 (2020): 1714. http://dx.doi.org/10.3390/w12061714.

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The construction of ‘hard’ impermeable surfaces in urban areas results in the increased flow of stormwater runoff and its associated pollutants into downstream receiving waters. Permeable Pavement Systems (PPS) can help mitigate this. The most common type of PPS in South Africa is permeable interlocking concrete pavement (PICP), but there is currently insufficient information available on the relative treatment performance of different PICP designs. This paper describes an investigation into the performance of ten different PICP systems constructed in the Civil Engineering Laboratory at the Un

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Alnajim, Rishaa Abdulaziz, and Bahjat Fakieh. "A Tourist-Based Framework for Developing Digital Marketing for Small and Medium-Sized Enterprises in the Tourism Sector in Saudi Arabia." Data 8, no. 12 (2023): 179. http://dx.doi.org/10.3390/data8120179.

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Social media has become an essential tool for travel planning, with tourists increasingly using it to research destinations, book accommodation, and make travel arrangements. However, little is known about how tourists use social media for travel planning and what factors influence their intentions to use social media for this purpose. This thesis aims to understand tourists’ intentions to use social media for travel planning. Specifically, it investigates the factors influencing tourists’ intentions to use social media for planning travel to Saudi Arabia. It develops a machine learning (ML) c

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Castelino, Kenneth, V. Sundararajan, Roshan D’Souza, Balaji Kannan, and Paul K. Wright. "AMPS-An Automated Modular Process Planning System." Journal of Computing and Information Science in Engineering 4, no. 3 (2004): 235–41. http://dx.doi.org/10.1115/1.1710866.

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AMPS is a fully automated process planning system for milling of 2.5D parts. It consists of different modules, each of which performs specific tasks like identification of removal volumes, setup and fixture planning, tool selection and tool path planning. This article focuses on the architecture of the planning system, the integration of the different modules and the interfaces needed for smooth flow of information between these modules. Current computer aided process planning (CAPP) practices were considered while defining interfaces so that these modules can be easily integrated into a comme

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Sonavane, P. G., and G. R. Munavalli. "Modeling nitrogen removal in a constructed wetland treatment system." Water Science and Technology 60, no. 2 (2009): 301–9. http://dx.doi.org/10.2166/wst.2009.319.

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A constructed wetland treatment system (CWTS) has been adopted for removal of nitrogen from wastewater. The design methodologies developed for CWTS in previous studies were based on thumb rules, and first order/Monod type kinetics models. The use of kinetic models is system/environment specific. There is scope to assess the potential of other reaction kinetic models for their usefulness and applicability. In the present study, lumped and distributed parameter models incorporated with various reactions kinetic were developed. The various processes were incorporated in distributed parameter mode

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Shahawy, Abeer El, Inas A. Ahmed, Mahmoud Nasr, Ahmed H. Ragab, Saedah R. Al-Mhyawi, and Khalda M. A. Elamin. "Organic Pollutants Removal from Olive Mill Wastewater Using Electrocoagulation Process via Central Composite Design (CCD)." Water 13, no. 24 (2021): 3522. http://dx.doi.org/10.3390/w13243522.

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Electrocoagulation (EC) was studied in this study as a potential alternative approach for treating Olive Mill Wastewater (OMW). Aluminum plates were utilized as anode and cathode to evaluate the removal of Chemical Oxygen Demand (COD) from OMW and the aluminum electrode’s weight loss. Central Composite Experimental Design (CCD) and Response Surface Methodology were used to optimize its performance. Anodes were weighed before and after each electrocoagulation experiment, to compare the experimental and the theoretical dissolved aluminum weights calculated using Faraday’s law. We discovered the

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Dahlan, Irvan, Emillia Eizleen Md Azhar, Siti Roshayu Hassan, Hamidi Abdul Aziz, and Yung-Tse Hung. "Statistical Modeling and Optimization of Process Parameters for 2,4-Dichlorophenoxyacetic Acid Removal by Using AC/PDMAEMA Hydrogel Adsorbent: Comparison of Different RSM Designs and ANN Training Methods." Water 14, no. 19 (2022): 3061. http://dx.doi.org/10.3390/w14193061.

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In this study, the response surface methodology (RSM) and artificial neural network (ANN) were employed to study the adsorption process of 2,4-dichlorophenoxyacetic acid (2,4-D) by using modified hydrogel, i.e., activated carbon poly(dimethylaminoethyl methacrylate) (AC/PDMAEMA hydrogel). The effect of pH, the initial concentration of 2,4-D and the activated carbon content on the removal of 2,4-D and adsorption capacity were investigated through the face-centered composite design (FCCD), optimal design and two-level factorial design. The response surface plot suggested that higher removal of 2

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Hamouda, Mohamed A., Haliemeh Sweidan, Munjed A. Maraqa, and Hilal El-Hassan. "Mechanistic Study of Pb2+ Removal from Aqueous Solutions Using Eggshells." Water 12, no. 9 (2020): 2517. http://dx.doi.org/10.3390/w12092517.

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This study investigates the impact of eggshell particle size and solid-to-water (s/w) ratio on lead (Pb2+) removal from aqueous solution. Collected raw eggshells were washed, crushed, and sieved into two particle sizes (<150 and 150–500 µm). Batch Pb2+ removal experiments were conducted at different s/w ratios with initial Pb2+ concentrations of up to 70 mg/L. The contribution of precipitation to Pb2+ removal was simulated by quantifying removal using eggshell water, whereas sorbed Pb2+ was quantified by acid digestion. Results indicated that eggshell particle sizes did not affect Pb2+ remo

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Adin, Avner. "Climbing the Effluent Filtration Tree: Modelling, Mechanisms & Applications—A Monograph." Energies 15, no. 17 (2022): 6401. http://dx.doi.org/10.3390/en15176401.

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Particle filtration is a major building block in effluent treatment facilities for water reuse in agriculture, industry, and the community. Yet, its incorporation in modern hybrid treatment systems still lacks basic know-how for process optimization. This paper aims to provide a profound understanding of particle filtration vis-à-vis its various reuse applications. The methodology used follows a road map depicted as a growing tree, representing the author’s research from roots to top: roots—basic modeling, mechanisms; tree trunk—filter design approach for reuse; branches—enhanced particle remo

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Liu, Suning, and Ting Fong May Chui. "Optimal In-Stream Structure Design through Considering Nitrogen Removal in Hyporheic Zone." Water 12, no. 5 (2020): 1399. http://dx.doi.org/10.3390/w12051399.

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The hyporheic zone (HZ), the region beneath or alongside a streambed, can play a vital role in a stream ecosystem. Previous studies have examined the impacts of in-stream structures on the HZ and river restoration; however, studies on optimizing the design of in-stream structures are still lacking. Therefore, this study aims to propose a method for optimizing the design of in-stream structures (e.g., weirs) through comprehensively considering both nitrogen removal amount (NRA) and nitrogen removal ratio (NRR) in the HZ based on numerical modelling. The Hydrologic Engineering Center’s River Ana

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Machado, Tulio de Almeida, Haroldo Carlos Fernandes, Fábio Lúcio Santos, Clarice Aparecida Megguer, and Nara Silveira Velloso. "Development of a bulk cargo fruit sampler." Acta Scientiarum. Technology 45 (September 27, 2023): e61804. http://dx.doi.org/10.4025/actascitechnol.v45i1.61804.

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The design of an agricultural machine or equipment can be considered of great complexity, due to the interactions between the operator, the machine, the product and the environment. There is a lack of available technologies for collecting fruit in bulk cargo at any time from transport to industries. A limiting factor is the loading of fruits that are at the base of the cargo. This study was carried out to develop a detailed design of a bulk cargo fruit sampler that can collect fruits in any position of the x, y and z axes. A methodology was applied and adapted to execute the design. This metho

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Vasquez, Yaneth, Jair Franco, Mario Vasquez, et al. "Removal of Cr and Organic Matter from Real Tannery Wastewater via Fenton-like Process Using Commercial Nano-Scale Zero-Valent Iron." Water 16, no. 5 (2024): 754. http://dx.doi.org/10.3390/w16050754.

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The tannery wastewater from the tanning stage (TWT) comprises organic and Cr pollutants, which can adversely affect aquatic life and have carcinogenic effects. In this study, we investigated the performance of a Fenton-like process using commercial Nano-scale zero-valent iron (nZVI) for the simultaneous removal of Cr and organic matter from real TWT. We used an experimental design to select the principal operating parameters. A Plackett–Burman design identified variables for Cr-total and COD removal, followed by a central composite design (CC-D) to determine optimal variable levels. Finally, t

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