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Relevant bibliographies by topics / Sieving

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Academic literature on the topic 'Sieving'

Author: Grafiati

Published: 4 June 2021

Last updated: 11 June 2025

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Journal articles on the topic "Sieving"

1

AOKI, Kazumaro, and Hiroki UEDA. "Bucket Sieving." IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences E92-A, no. 8 (2009): 1845–50. http://dx.doi.org/10.1587/transfun.e92.a.1845.

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Kleinjung, Thorsten. "Quadratic sieving." Mathematics of Computation 85, no. 300 (2015): 1861–73. http://dx.doi.org/10.1090/mcom/3058.

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Huang, Wen Jin, Ya Yu Huang, Jun Shi, and Shi Chang Han. "Study on How Sieving Parameters of Vibration Screen Influence Sieving Efficiency Based on DEM." Applied Mechanics and Materials 444-445 (October 2013): 1038–41. http://dx.doi.org/10.4028/www.scientific.net/amm.444-445.1038.

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Vibrating screen is the most commonly used sieving machinery, how to improve its sieving performance is a major issue during the design and application. Discrete element method (DEM) was employed here to analyze and simulate the sieving process, and the influence of the various sieving parameters on sieving efficiency were studied. The curve of relationship between the sieving parameters and sieving efficiency was established. Contrasted with traditional methods, DEM has great superiority on the sieving study.

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Jin, S., and G. Xue. "Cation-Sieving and Anion-Sieving of Electrosynthesized Polythiophene Film." Journal of Macromolecular Science, Part A 34, no. 3 (1997): 503–7. http://dx.doi.org/10.1080/10601329708014976.

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Liu, Chuang, Wen Liang Du, Ya Jing Quan, Kai Xing, and Heng Han. "Influence of Sieve Structural Parameters on Sieving of Shelled Buckwheat." Advanced Materials Research 915-916 (April 2014): 978–84. http://dx.doi.org/10.4028/www.scientific.net/amr.915-916.978.

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The problems of high falsesieving rate and low productivity are encountered while sieving shelled buckwheat with traditional round plate sieve. This paper presents a design idea for improving the sieving effect by changing the plate structure. The improved designs consist of a round plate sieve with larger percentage of sieving area than the traditional round plate sieve and a triangular plate sieve with the approximately same geometry as shelled buckwheat grains. Tests are conducted to compare the sieving performance of traditional round plate sieve with the newly designed round plate sieve with different percentage of sieving areas and apertures. Also the traditional round plate sieve is compared with triangle plate sieve with different percentage of sieving areas and apertures. Compared to traditional round plate sieve, the falsesieving rate for newly designed round plate sieve with an aperture isφ4.4mm is reduced by 3.6.A round plate sieve with a percentage of sieving area of59.7%, aperture ofφ4.3mm, is used to sieve the shelled buckwheat of sizeφ4.6~4.7mm.A falsesieving rate of2.3, and non-sieving rate of17.4 are obtained and the sieving effect is found to be the best. For the triangle plate sieve a falsesieving rate of90.2 and non-sieving rate of92.1 are obtained. The triangle plate sieve is found unsuitable for the sieving of shelled buckwheat.

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Robertson, Jack M., and William A. Webb. "Sieving with Sums." Mathematical Gazette 75, no. 472 (1991): 171. http://dx.doi.org/10.2307/3620246.

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Stakėnas, Vilius. "Sieving the Rationals." Lithuanian Mathematical Journal 61, no. 3 (2021): 401–12. http://dx.doi.org/10.1007/s10986-021-09535-8.

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Chavan, Aniket A., Prathamesh D. Kadam, Sahil S. Lad, Manas M. Mankar, and Sajid Shaikh. "Multipurpose Sieving Machine." International Journal for Research in Applied Science and Engineering Technology 10, no. 3 (2022): 2132–38. http://dx.doi.org/10.22214/ijraset.2022.41087.

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Abstract: A sieve is a device for separating wanted elements from unwanted material or for characterizing the particle size distribution of a sample, typically using a woven screen such as a mesh or net. This project focuses in design, fabrication of the mechanical part of machine and the system of the sieve machine. To achieve this project objective, this sieve machine body structure and mechanical system needs to concern some other criteria such as strength, safety and ergonomic design. Depending on their size the individual particles either pass through the sieve mesh or retained on the sieve surface. There are different machines that are being used for sand sieving processes. In our project the process will takes place automatically. Thus, the time consumed during the whole process is reduced. Keywords: Sieving Machine, Sand Sieving Machine, Sieving Machine Fabrication, Automatic Sieving

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Davis, Mark E. "Design for sieving." Nature 382, no. 6592 (1996): 583–85. http://dx.doi.org/10.1038/382583a0.

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Bai, Shi, Thijs Laarhoven, and Damien Stehlé. "Tuple lattice sieving." LMS Journal of Computation and Mathematics 19, A (2016): 146–62. http://dx.doi.org/10.1112/s1461157016000292.

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Lattice sieving is asymptotically the fastest approach for solving the shortest vector problem (SVP) on Euclidean lattices. All known sieving algorithms for solving the SVP require space which (heuristically) grows as $2^{0.2075n+o(n)}$, where $n$ is the lattice dimension. In high dimensions, the memory requirement becomes a limiting factor for running these algorithms, making them uncompetitive with enumeration algorithms, despite their superior asymptotic time complexity.We generalize sieving algorithms to solve SVP with less memory. We consider reductions of tuples of vectors rather than pairs of vectors as existing sieve algorithms do. For triples, we estimate that the space requirement scales as $2^{0.1887n+o(n)}$. The naive algorithm for this triple sieve runs in time $2^{0.5661n+o(n)}$. With appropriate filtering of pairs, we reduce the time complexity to $2^{0.4812n+o(n)}$ while keeping the same space complexity. We further analyze the effects of using larger tuples for reduction, and conjecture how this provides a continuous trade-off between the memory-intensive sieving and the asymptotically slower enumeration.

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Dissertations / Theses on the topic "Sieving"

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Bellosi, Giuditta. "Il Cyclic Sieving Phenomenon." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2019. http://amslaurea.unibo.it/19258/.

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Questa tesi si ripropone di presentare il cyclic sieving phenomenon (CSP). Tale fenomeno si verifica nell’azione di un gruppo ciclico G su un insieme finito: esso consiste nel fatto che il numero di elementi dell’insieme fissati da ogni sottogruppo di G corrisponde alla valutazione di un polinomio a coefficienti interi in una radice primitiva dell’unità di ordine corrispondente a quello del sottogruppo considerato. Il nostro obbiettivo è quindi di studiare il CSP in determinati contesti algebrici. Nel primo capitolo richiameremo le nozioni necessarie alla definizione del CSP e ne evidenzieremo le caratteristiche fondamentali. Analizzeremo poi il CSP nel contesto dei multinsiemi, soffermandoci sull'azione del gruppo simmetrico su di essi e sull'utilizzo del polinomio gaussiano. Nel quarto capitolo ci occupiamo di studiare il fenomeno del setaccio ciclico nel contesto della Teoria della Rappresentazione, mostrando come il fenomeno possa essere visto come il cambiamento di base all’interno di un G-modulo. Attraverso alcuni risultati della Teoria della Rappresentazione, enunciamo il teorema che garantisce la presenza del CSP in una terna generica sfruttando esclusivamente l’isomorfismo tra G-moduli. Nell’ultima sezione definiremo i tensori simmetrici e li utilizzeremo per fornire un’ulteriore dimostrazione del CSP enunciato nel caso dei multinsiemi. Nel quinto capitolo ci focalizzeremo sullo studio del fenomeno nel contesto dei gruppi generati da riflessioni complesse, sfruttando l’azione libera e semi libera dei gruppi ciclici. Definiremo due importanti algebre, l’algebra gruppo e l’algebra dei coinvarianti, necessarie per enunciare un importante teorema sul CSP che mette in relazione gli elementi precedentemente citati. Quest'ultimo, applicato ai gruppi di Coxeter, nello specifico al gruppo simmetrico, fornisce un'ulteriore dimostrazione del CSP sui multinsiemi.

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Haynes, Nicholas. "The sieving electrostatic precipitator." Ohio : Ohio University, 2004. http://www.ohiolink.edu/etd/view.cgi?ohiou1176404052.

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Gottipati, Pranitha. "The dry sieving electrostatic precipitator." Ohio : Ohio University, 2004. http://www.ohiolink.edu/etd/view.cgi?ohiou1176320016.

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Gunenc, Mehmet V. "Enhanced Charging Sieving Electrostatic Precipitator." Ohio University / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1195594122.

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Kalivoda, Julie. "Effect of sieving methodolgy on determining particle size of ground corn, sorghum, and wheat by sieving." Thesis, Kansas State University, 2016. http://hdl.handle.net/2097/32156.

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Master of Science<br>Department of Grain Science and Industry<br>Charles Stark<br>Experiments were conducted to evaluate particle size methodology and flow-ability of fractionated corn. The first experiment compared five variations of the current approved method to determine geometric mean diameter (d[subscript]gw) and geometric standard deviation (S[subscript]gw) described by ANSI/ASAE S319.4 “Method of determining and expressing fineness of feed materials by sieving”. This method controls many variables, including the suggested sample size and the type, number, and size of sieves. However, the method allows for variations in sieving time, sieve agitator inclusion, and the use of dispersing agent. The variations were tested with three grains (corn, wheat, and sorghum). There was no method × grain (P>0.05) interaction for d[subscript]gw, so it was removed. Ten minute sieving time with sieve agitators and dispersing agent resulted in the lowest d[subscript]gw and greatest S[subscript]gw (P<0.05). The second experiment evaluated particle size analysis on ground corn using a 3-sieve method with varying sieving time (30, 60, and 90 s) with the addition of dispersing agent. The sieving time for the 3-sieve method referred to the time sieves were hand shaken side to side. Ninety seconds sieving time with dispersing agent (0.25 g) resulted in the lowest d[subscript]gw (P<0.05). The 3-sieve method was not developed to calculate the S[subscript]gw, so means and main effects were not determined. Experiment three evaluated particle size and flow-ability by grinding corn at two moisture (10 and 12%) with three screenings levels (0, 2.5, and 5%). Results suggested cleaning corn prior to grinding with a roller mill does not change particle size or flow-ability. Experiment four continued the evaluation of flow-ability with corn ground to three target particle sizes (400, 500, and 600 µm) and fractionated into fine, medium, and coarse segments. Target particle size impacted d[subscript]gw, S[subscript]gw, and bulk density (P<0.05), prior to fractionation. Based on the results of this experiment, flow-ability can be improved if fine particles (<282 µm) are removed. Results of these experiments indicated that particle size analysis should use sieve agitators, dispersing agent, and 10 or 15 min sieving time for the standard 13-sieve method and 90 s sieving time with dispersing agent for the 3-sieve method.

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Uhlin, Joakim. "Combinatorics of Macdonald polynomials and cyclic sieving." Thesis, KTH, Matematik (Avd.), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-241919.

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In this thesis, we study the non-symmetric Macdonald polynomials E_λ (x;q,t) at t=0 from a combinatorial point of view, using the combinatorial formula found by J. Haglund, M. Haiman, and N. Loehr. Our primary focus is when λ is a partition. We summarize the known theory about this specialization and prove some new results related to this combinatorial formula. We also define the cyclic sieving phenomenon (CSP). For rectangular λ, we present an instance of cyclic sieving with E_λ (1,q,q^2,...,q^(k-1);1,0) as CSP-polynomial. We also conjecture another instance of CSP with E_λ (1,1,...,1;q,0) as CSP-polynomial. This conjecture generalizes a previously known CSP-triple. Furthermore, we prove this conjecture in the case when is λ an m×2 diagram.<br>I denna uppsats studerar vi de icke-symmetriska Macdonaldpolynomen E_λ (x;q,t) när t=0 från en kombinatorisk synvinkel genom att använda den kombinatoriska formeln som visats av J. Haglund, M. Haiman och N. Loehr. Vårt huvudsakliga fokus är specialfallet då λ är en partition. Vi summerar teorin om denna specialisering och visar några nya resultat som är relaterade till den kombinatoriska formeln.Vi definierar även det cykliska sållningsfenomenet (CSF). För rektangulära λ visar vi en förekomst av cyklisk sållning med E_λ (1,q,q^2,...,q^(k-1);1,0) som CSF-polynom. Vi presenterar också en förmodan om ytterligare en förekomst av CSF med E_λ (1,1,...,1;q,0) som CSF-polynom. Denna förmodan generaliserar en tidigare förekomst av CSF. Vidare visar vi att denna förmodan är sann i fallet då λ är ett m×2 diagram.

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Kuraoka, Koji. "Preparation and properties of molecular sieving membranes." Kyoto University, 2000. http://hdl.handle.net/2433/151539.

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本文データは平成22年度国立国会図書館の学位論文(博士)のデジタル化実施により作成された画像ファイルを基にpdf変換したものである<br>Kyoto University (京都大学)<br>0048<br>新制・論文博士<br>博士(工学)<br>乙第10506号<br>論工博第3543号<br>新制||工||1192(附属図書館)<br>UT51-2000-P673<br>(主査)教授中條善樹, 教授田門肇, 教授平尾一之<br>学位規則第4条第2項該当

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Khan, Zahirul Hasan. "Bench- and Pilot-Testing of Sieving Electrostatic Precipitator." Ohio University / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1177721692.

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Clarkson, Gavin. "Extracting gold from gravity concentrates using grinding and sieving." Thesis, University of British Columbia, 2015. http://hdl.handle.net/2429/56272.

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This thesis presents a novel, chemical-free method of extracting Yukon placer gold from various secondary and tertiary gravity middlings. This method exploits the differences in relative malleability rather than density. At a certain point in gravity gold processing, the middling material contains too many high density minerals to be amenable to further gold extraction through gravity separation. Yukon miners only use gravity extraction methods and low grade gold concentrates are stockpiled for later processing through tedious hand picking, which is rarely completed. An 8-inch diameter batch rod mill was field tested throughout the Yukon placer fields to demonstrate a chemical-free extraction alternative which exploits the resistance of gold to grinding and allows the separation of free gold particles from the finer grind products with sieving. Physical assays often indicated recoveries greater than 90% of the contained gold particles on the oversize portion of the screens, while losses reported to the undersize. The gold remaining in the fine and evenly classified loss material is now amenable to gravity processing. Furthermore, this paper reviews the importance of maximizing gold extraction in the modern Yukon placer environment, followed by reviews of gravity based upgrading equipment, the high malleability of gold, the justification for rod mill use over other comminution methods, and finally field testing methodology and preliminary results.<br>Applied Science, Faculty of<br>Mining Engineering, Keevil Institute of<br>Graduate

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Ruthven, Douglas M. "Diffusion through porous media: ultrafiltration, membrane permeation and molecular sieving." Diffusion fundamentals 11 (2009) 13, S. 1-20, 2009. https://ul.qucosa.de/id/qucosa%3A13933.

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This paper considers permeation through microporous or nanoporous inorganic membranes under the influence of an applied pressure gradient. In general membrane permeation may be considered as a diffusive process, driven by the gradient of chemical potential (which depends on both composition and pressure). The relative importance of these two factors varies greatly for different types of system. The general features of such processes are reviewed and the diffusional behavior of selected systems is examined. (membrane permeation, osmosis, diffusion, zeolite membrane, DDR-3, SAPO-34)

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Books on the topic "Sieving"

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Mahlig, WC, AE Reed, WC Mahlig, RH Smith, and CW Ward, eds. Manual on Test Sieving Methods. ASTM International, 1985. http://dx.doi.org/10.1520/stp447b-eb.

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Balsillie, James H. Sticky grain occurrences in sieving. Florida Geological Survey, 1999.

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American Society for Testing and Materials., ed. Manual on test sieving methods. American Society for Testing and Materials, 1985.

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ASTM Committee E-29 on Particle and Spray Characterization. Manual on test sieving methods. Edited by Pope Lawrence C. 1937-, Ward Charles W. 1923-, and American Society for Testing and Materials. ASTM, 1998.

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Smith, Trent, ed. Manual on Test Sieving Methods: Guidelines for Establishing Sieve Analysis Procedures. ASTM International, 2014. http://dx.doi.org/10.1520/mnl32-eb.

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ASTM Committee E-29 on Particle and Spray Characterization, ed. Manual on test sieving methods: Guidelines for establishing sieve analysis procedures. 5th ed. ASTM International, 2014.

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Geological Survey (U.S.), ed. Modifications of two palynological processing techniques: Ultrasonic processing and early-stage sieving. Dept. of the Interior, U.S. Geological Survey, 1992.

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Benson, Fred C. Evaluation of aggregate sieving methods for hot-mix asphaltic concrete design and production. Texas Transportation Institute, Texas A&M University System, 1985.

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Pope, LR, and CW Ward, eds. Manual on Test Sieving Methods, 4th Edition, Prepared by ASTM Committee E29 as Guidelines for Establishing Sieve Analysis Procedures. ASTM International, 1998. http://dx.doi.org/10.1520/mnl32_4th-eb.

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Seddiki, Pirjo. Naisen kuvia: Sievän ja koristeellisen merkityksiä. Aalto-yliopiston taideteollinen korkeakoulu, 2010.

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Book chapters on the topic "Sieving"

1

Allen, Terence. "Sieving." In Particle Size Measurement. Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-0417-0_5.

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Gooch, Jan W. "Sieving." In Encyclopedic Dictionary of Polymers. Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_10624.

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Bernhardt, Claus. "Sieving." In Particle Size Analysis. Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-011-1238-3_7.

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Kaliski, Burt. "Sieving." In Encyclopedia of Cryptography and Security. Springer US, 2011. http://dx.doi.org/10.1007/978-1-4419-5906-5_435.

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Kashani, John, Richard D. Shih, Thomas H. Cogbill, et al. "Sieving Coefficient." In Encyclopedia of Intensive Care Medicine. Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-00418-6_3300.

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Laarhoven, Thijs, and Artur Mariano. "Progressive Lattice Sieving." In Post-Quantum Cryptography. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-79063-3_14.

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Guo, Qian, Thomas Johansson, Erik Mårtensson, and Paul Stankovski. "Coded-BKW with Sieving." In Advances in Cryptology – ASIACRYPT 2017. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-70694-8_12.

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Geiselmann, Willi, and Rainer Steinwandt. "Yet Another Sieving Device." In Topics in Cryptology – CT-RSA 2004. Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-540-24660-2_22.

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Murty, M. Ram. "Sieving Using Dirichlet Series." In Current Trends in Number Theory. Hindustan Book Agency, 2002. http://dx.doi.org/10.1007/978-93-86279-09-5_10.

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Aoki, Kazumaro, and Hiroki Ueda. "Sieving Using Bucket Sort." In Advances in Cryptology - ASIACRYPT 2004. Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/978-3-540-30539-2_8.

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Conference papers on the topic "Sieving"

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Schommer, Christoph. "Sieving publishing communities in DBLP." In 2008 Third International Conference on Digital Information Management (ICDIM). IEEE, 2008. http://dx.doi.org/10.1109/icdim.2008.4746753.

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Teng, Jinghua. "Sieving Photons for Wavefront Manipulation." In Conference on Lasers and Electro-Optics/Pacific Rim. OSA, 2018. http://dx.doi.org/10.1364/cleopr.2018.th2f.1.

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Laarhoven, Thijs. "Evolutionary Techniques in Lattice Sieving Algorithms." In 11th International Conference on Evolutionary Computation Theory and Applications. SCITEPRESS - Science and Technology Publications, 2019. http://dx.doi.org/10.5220/0007968800310039.

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Pallab, Pritam, and Abhijit Das. "AVX-512-based Parallelization of Block Sieving and Bucket Sieving for the General Number Field Sieve Method." In 18th International Conference on Security and Cryptography. SCITEPRESS - Science and Technology Publications, 2021. http://dx.doi.org/10.5220/0010515206530658.

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Pallab, Pritam, and Abhijit Das. "AVX-512-based Parallelization of Block Sieving and Bucket Sieving for the General Number Field Sieve Method." In 18th International Conference on Security and Cryptography. SCITEPRESS - Science and Technology Publications, 2021. http://dx.doi.org/10.5220/0010515200002998.

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Satilmis, Hami, and Sedat Akleylek. "Efficient Implementations of Gauss-Based Sieving Algorithms." In 2020 28th Signal Processing and Communications Applications Conference (SIU). IEEE, 2020. http://dx.doi.org/10.1109/siu49456.2020.9302189.

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Zacny, K., Magnus Hedlund, Jason Herman, Jack Craft, William Smythe, and Chris McKay. "Sample crushing, sieving, metering, and Distribution System." In 2012 IEEE Aerospace Conference. IEEE, 2012. http://dx.doi.org/10.1109/aero.2012.6187062.

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Banerjee, Anoushka, Dileep Dinesh, and Arnav Bhavsar. "Sieving Camera Trap Sequences in the Wild." In 11th International Conference on Pattern Recognition Applications and Methods. SCITEPRESS - Science and Technology Publications, 2022. http://dx.doi.org/10.5220/0010919000003122.

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Yuechuan Yang, A.R. Womac, and P.I. Miu. "High-Specific Separation of Biomass Materials by Sieving." In 2006 Portland, Oregon, July 9-12, 2006. American Society of Agricultural and Biological Engineers, 2006. http://dx.doi.org/10.13031/2013.21526.

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Escobedo, C., A. G. Brolo, R. Gordon, and D. Sinton. "Optofluidic Sieving with Flow-Through Plasmonic Nanohole Arrays." In Conference on Lasers and Electro-Optics. OSA, 2010. http://dx.doi.org/10.1364/cleo.2010.ctun2.

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Reports on the topic "Sieving"

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Hitchcock, D., H. Colon-Mercado, T. Krentz, S. Serkiz, J. Velten, and S. Xiao. Room temperature Sieving of Hydrogen Isotopes Using 2-D Materials. Office of Scientific and Technical Information (OSTI), 2017. http://dx.doi.org/10.2172/1395964.

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DAMON, CLICK. SCOPING STUDIES TO DEVELOP A METHOD TO DETERMINE PARTICLE SIZE IN SIMULANT SLUDGE SLURRIES BY SIEVING. Office of Scientific and Technical Information (OSTI), 2005. http://dx.doi.org/10.2172/840794.

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Bredt, Paul R., Calvin H. Delegard, Andrew J. Schmidt, Kurt L. Silvers, Brenda M. Thornton, and Sue Gano. Particle Size (Sieving) and Enthalpy (Acid Calorimetry) Analysis of Single-Pull K East Basin Floor and Pit Sludges. Office of Scientific and Technical Information (OSTI), 2000. http://dx.doi.org/10.2172/15003687.

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PR Bredt, CH Delegard, AJ Schmidt, KL Silvers, BM Thornton, and S Gano. Particle Size (Sieving) and Enthalpy (Acid Calorimetry) Analysis of Single-Pull K East Basin Floor and Pit Sludges. Office of Scientific and Technical Information (OSTI), 2000. http://dx.doi.org/10.2172/772361.

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Rasmussen, Charlotte, and Kristian Dalsgaard. Working paper Documentation of tests on particle size methodologies for laser diffraction compared to traditional sieving and sedimentation analysis. Aarhus University Library, 2017. http://dx.doi.org/10.7146/aul.205.148.

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Way, J. D. A mechanistic study of molecular sieving inorganic membranes for gas separations. Final report, [August 1, 1992--July 31, 1993]. Office of Scientific and Technical Information (OSTI), 1993. http://dx.doi.org/10.2172/10118702.

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Gao, David. A new sieving matrix for DNA sequencing, genotyping and mutation detection and high-throughput genotyping with a 96-capillary array system. Office of Scientific and Technical Information (OSTI), 1999. http://dx.doi.org/10.2172/754779.

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Bigl, Matthew, Samuel Beal, and Charles Ramsey. Determination of residual low-order detonation particle characteristics from Composition B mortar rounds. Engineer Research and Development Center (U.S.), 2022. http://dx.doi.org/10.21079/11681/45260.

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Empirical measurements of the spatial distribution, particle-size distribution, mass, morphology, and energetic composition of particles from low-order (LO) detonations are critical to accurately characterizing environ-mental impacts on military training ranges. This study demonstrated a method of generating and characterizing LO-detonation particles, previously applied to insensitive munitions, to 81 mm mortar rounds containing the conventional explosive formulation Composition B. The three sampled rounds had estimated detonation efficiencies ranging from 64% to 82% as measured by sampled residual energetic material. For all sampled rounds, energetic deposition rates were highest closer to the point of detonation; however, the mass per radial meter varied. The majority of particles (>60%), by mass, were <2 mm in size. However, the spatial distribution of the <2 mm particles from the point of detonation varied be-tween the three sampled rounds. In addition to the particle-size-distribution results, several method performance observations were made, including command-detonation configurations, sampling quality control, particle-shape influence on laser-diffraction particle-size analysis (LD-PSA), and energetic purity trends. Overall, this study demonstrated the successful characterization of Composition B LO-detonation particles from command detonation through combined analysis by LD-PSA and sieving.

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Calomeni, Alyssa, Andrew McQueen, Ciera Kinley-Baird, and Gerard Clyde. Identification and preventative treatment of overwintering cyanobacteria in sediments : a literature review. Engineer Research and Development Center (U.S.), 2022. http://dx.doi.org/10.21079/11681/45063.

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Freshwaters can experience growths of toxin-producing cyanobacteria or harmful algal blooms (HABs). HAB-producing cyanobacteria can develop akinetes, which are thick-enveloped quiescent cells akin to seeds in vascular plants or quiescent colonies that overwinter in sediment. Overwintering cells produce viable “seed beds” for HAB resurgences and preventative treatments may diminish HAB intensity. The purpose of this literature review was to identify (1) environmental factors triggering germination and growth of overwintering cells, (2) sampling, identification, and enumeration methods, and (3) feasibility of preventative algaecide treatments. Conditions triggering akinete germination (light ≥0.5 μmol m-2s-1, temperature 22-27℃) differ from conditions triggering overwintering Microcystis growth (temperature 15-30℃, nutrients, mixing). Corers or dredges are used to collect surficial (0-2 cm) sediment layers containing overwintering cells. Identification and enumeration via microscopy are aided by dilution, sieving, or density separation of sediment. Grow-out studies simulate environmental conditions triggering cell growth and provide evidence of overwintering cell viability. Lines of evidence supporting algaecide efficacy for preventative treatments include (1) field studies demonstrating scalability and efficacy of algaecides against benthic algae, (2) data suggesting similar sensitivities of overwintering and planktonic Microcystis cells to a peroxide algaecide, and (3) a mesocosm study demonstrating a decrease in HAB severity following preventative treatments. This review informs data needs, monitoring techniques, and potential efficacy of algaecides for preventative treatments of overwintering cells.

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Савосько, Василь Миколайович, Юлія Віліївна Бєлик, Юрій Васильович Лихолат, et al. The Total Content of Macronutrients and Heavy Metals in the Soil on Devastated Lands at Kryvyi Rih Iron Mining & Metallurgical District (Ukraine). Geology-dnu-dp.ua, 2021. http://dx.doi.org/10.31812/123456789/4286.

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The relevance of the research is due to the need to develop technologies for phytoremediation of the devastated lands in the mining and metallurgical regions of Ukraine and the world. In this regard, the creation of tree plantations adapted to the ecological conditions of such territories is considered by many experts as the most promising option for innovative technologies. However, the development of artificial woodlands requires knowledge of the pedogeochemical character- istics of devastated lands. The aim of the work was to carry out a comparative analysis of the macronutrients and heavy metals gross forms content in the soils of the devastated lands of the Kryvyi Rih mining and metallurgical region. The field studies focused on five contrasting monitoring sites of the Petrovsky dump (Central Kryvorizhzhya), which has a typical age and composition of rocks for the region. Soil sampling, drying, sieving, and sample preparation (sintering in a muffle furnace) were done in accordance with classical techniques. The concentrations of macronutrients (potassium, sodium, calcium, magnesium, sulfur, and phosphorus) and heavy metals (iron, manganese, zinc, copper, lead, and cadmium) were determined using an Inductively Coupled Plasma Mass Spectrometry (ICP- MS) X-Series 2 (Thermo Fisher Scientific, USA). The analytical part of our research was carried out on the basis of the laboratory of the Institute of Biosciences, Freiberg University of Technology and Mining Academy (Freiberg, Germany). At monitoring sites, significant differences were found in the content of macronutrients gross forms, and their variation relative to the control values as well. Potassium and sodium concentrations generally differed slightly or were close to control levels. The results of determining the content of calcium, magnesium and phosphorus indicate a significant deficiency or excess of these macronutrients in the soils of the devastated lands. An increased sulfur content was found in the soils of all monitoring sites, in some cases 4 times higher than the control level. The measured content of gross forms of iron, manganese, copper, cadmium and, partially, zinc in the soils of different monitoring sites exceeded the control values by 5.5 – 5.9 times. Thus, the analysis of the research results made it possible to establish that the soils of the devastated lands of the Petrovsky dump are characterized by unfavorable properties for the growth of most species of woody plants.

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