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Academic literature on the topic 'Sieves'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 March 2023

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Journal articles on the topic "Sieves"

1

Meshram, Himanshu, Nihal Bawankar, Yash Nikhar, Danish Khan, Labhesh Petkar, Mohammad Kaif Abdul Aziz, Ubed Khan, and Dr M. Shakebuddin. "Design and Fabrication of Multi-Sieve Sand Sieving Machine." International Journal for Research in Applied Science and Engineering Technology 10, no. 5 (May 31, 2022): 1606–13. http://dx.doi.org/10.22214/ijraset.2022.42606.

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Abstract: This paper presents the design and fabrication of a sand sieving machine with multiple sieves that can be changed according to the usage of the work. As we see at every construction site, sand is sieved by old hand-operated (mesh sieving) techniques. Where the siever of a particular size is kept at support from the ground and then sand is poured onto the siever and then manually the sand is sieved by the hand making the sand travel onto the siever and the leftover sediments will be left at one face and the sieved sand will be on another. This technique is time-consuming and for fine sand filtration, it will adequately take a much longer time to sieve. To overcome this problem there are many machines which were designed but only a few of them can be handled at work site. In our design, we use two siever plates which are kept one aside from the other which are hung by the chain of which on end is fixed with the main body. The sievers to which an offset shaft from the motor is attached are to be driven. This offset will create the torsional vibrations with the to and fro motion. This will create the charge particles to get sieved and the leftover charge will move forward and then it will be sieved onto the other siever and the leftover particles will discharge out of the machine. This will reduce the time of sand sieving compared to the hand-operated technique and hence the efficiency and profitability will increase. Keywords: Sand, Sand Sieving Machine, Multi-Sieve, Motor Operated, Two Sieve, Mesh Plate, Screening, Vibrations.

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Bojic, Nada, Ruzica Nikolic, Branimir Jugovic, Zvonimir Jugovic, and Milica Gvozdenovic. "Uniaxial tension of drying sieves." Chemical Industry 67, no. 4 (2013): 655–62. http://dx.doi.org/10.2298/hemind120824109b.

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Although the literature contains numerous studies that have been developed to describe the nonlinear behavior of drying sieves' operation, there are no papers in this which report deeper investigation of the drying sieve behavior when exposed to tension and thermo stabilization. The aim of this paper is to provide insight into the elastoplastic behavior of the thermo stabilized and not stabilized sieves subjected to the tensile force. Within this work both theoretical and experimental investigations were performed. The sieves were joined by using a spiral. In separate experiments tests of wire base and weft of the weave mesh were performed, both for thermo stabilized and not thermo stabilized sieves, sieves joining and the sieve thermo stabilization itself. It was established that the thermo stabilization of sieves provides for stability of sieves' dimensions and that open thermo stabilized drying sieve exhibits better mechanical properties and exploitation characteristics then the sieves joining.

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Rusten, B., and H. Ødegaard. "Evaluation and testing of fine mesh sieve technologies for primary treatment of municipal wastewater." Water Science and Technology 54, no. 10 (November 1, 2006): 31–38. http://dx.doi.org/10.2166/wst.2006.710.

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Fine mesh sieve technologies were tested in full scale at several municipal wastewater treatment plants. A screening test was used to characterize wastewater and establish the design criteria for the sieves. To achieve high removal efficiencies it was crucial to operate the sieves with a filter mat. Rotating belt sieves performed best in the full-scale tests. A small dose of cationic polymer and a static flocculator ahead of a rotating belt sieve achieved excellent results on a wastewater that was originally found unsuitable for primary treatment with fine mesh sieves. Simple screw presses dewatered the sludge from the sieves to typically 25–30% total solids. Using fine mesh sieves with <500 microns openings was found to normally be the most economical process for primary treatment.

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Brand, Stephen K., Joel E. Schmidt, Michael W. Deem, Frits Daeyaert, Yanhang Ma, Osamu Terasaki, Marat Orazov, and Mark E. Davis. "Enantiomerically enriched, polycrystalline molecular sieves." Proceedings of the National Academy of Sciences 114, no. 20 (May 1, 2017): 5101–6. http://dx.doi.org/10.1073/pnas.1704638114.

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Zeolite and zeolite-like molecular sieves are being used in a large number of applications such as adsorption and catalysis. Achievement of the long-standing goal of creating a chiral, polycrystalline molecular sieve with bulk enantioenrichment would enable these materials to perform enantioselective functions. Here, we report the synthesis of enantiomerically enriched samples of a molecular sieve. Enantiopure organic structure directing agents are designed with the assistance of computational methods and used to synthesize enantioenriched, polycrystalline molecular sieve samples of either enantiomer. Computational results correctly predicted which enantiomer is obtained, and enantiomeric enrichment is proven by high-resolution transmission electron microscopy. The enantioenriched and racemic samples of the molecular sieves are tested as adsorbents and heterogeneous catalysts. The enantioenriched molecular sieves show enantioselectivity for the ring opening reaction of epoxides and enantioselective adsorption of 2-butanol (the R enantiomer of the molecular sieve shows opposite and approximately equal enantioselectivity compared with the S enantiomer of the molecular sieve, whereas the racemic sample of the molecular sieve shows no enantioselectivity).

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Wang, Baocang, and Yupu Hu. "Sieve Method for Polynomial Linear Equivalence." Journal of Applied Mathematics 2013 (2013): 1–8. http://dx.doi.org/10.1155/2013/872962.

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We consider the polynomial linear equivalence (PLE) problem arising from the multivariate public key cryptography, which is defined as to find an invertible linear transformationℒsatisfying𝒫=𝒮∘ℒfor given nonlinear polynomial maps𝒫and𝒮over a finite field𝔽q. Some cryptographic and algebraic properties of PLE are discussed, and from the properties we derive three sieves called multiplicative, differential, and additive sieves. By combining the three sieves, we propose a sieve method for the PLE problem. As an application of our sieve method, we show that it is infeasible to construct public key encryption schemes from the PLE problem.

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Pastuszka, Paweł, Zdzisław Bogdanowicz, Artur Kowalik, Krzysztof Gruszczyński, and Mariusz Łapiński. "Technical aspects of circulating tumor cells (CTC) isolation using molecular sieve." Bulletin of the Military University of Technology 66, no. 1 (March 31, 2017): 41–54. http://dx.doi.org/10.5604/01.3001.0009.9483.

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The article presents the characteristics of circulating tumor cells (CTC) in the context of their enrichment. It presents the possibility of the use of molecular sieves in CTC isolation. It shows important technical factors affecting the efficiency of CTC enrichment using molecular sieves and indicates the necessity of compromise choice of these parameters. It shows 2D molecular sieve construction made within the Biomedical Engineering Centre of MUT. It presents the future directions of research which assumes the use of this construction for a molecular filter in the form of sieve stack. Keywords: molecular sieves, circulating tumor cells (CTC) enrichment, laser photolithography, laser ablation

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Серга, Георгий, Georgiy Serga, Александр Секисов, Aleksandr Sekisov, София Губиева, and Sofiya Gubieva. "KINEMATICS INVESTIGATIONS OF BULK MATERIAL MOTION IN SCREW SIEVE. PART I." Bulletin of Bryansk state technical university 2019, no. 11 (November 28, 2019): 27–37. http://dx.doi.org/10.30987/1999-8775-2019-2019-11-27-37.

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There are offered working devices of the equipment for bulk material separation (working environment) ensuring bulk material motion with high amplitude. The developed classification of screw sieves is presented, the peculiarities of conditionally cylindrical shaped screw sieves and their models are shown. The design peculiarities and technologies for the assemblage of some sieves are investigated. The investigation results of bulk motion parameters depending on design peculiarities of a screw sieve are presented.

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Wang, Li Qin, Ning Yu, Yang Han, Xiang Ni Yang, and Xiu Li Zhao. "Synthesis and Characterization of the ZSM-5/MCM-41 Composite Molecular Sieves." Key Engineering Materials 480-481 (June 2011): 165–69. http://dx.doi.org/10.4028/www.scientific.net/kem.480-481.165.

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The ZSM-5/MCM-41 composite molecular sieves were synthesized in the method of hydrothermal crystallization in the presence of cetyltrimethylammonium bromide (CTMABr) as template agent. The prepared composite molecular sieves were characterized by the means of X-ray powder diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR) and the thermogravimetric and differential thermal analysis (TG-DTA). The experimental results showed that as-prepared ZSM-5/MCM-41 composite molecular sieves kept both crystal structure and compositions of ZSM-5 zeolites and MCM-41 molecular sieves. The decomposition temperature of the template agent was 293°C, and the decomposition temperature of the molecular sieve framework was higher than 800 °C. We supposed that the obtained ZSM-5/MCM-41 composite molecular sieves had high thermal stability, framework rigidity and structural stability, and could combine the properties of ZSM-5 zeolites and MCM-41 molecular sieves successfully.

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Nada, Bojić, Ružica Nikolić, and Goran Manojlović. "Conformity of finished forming sieves for paper industry." Production Engineering Archives 24, no. 24 (September 1, 2019): 29–32. http://dx.doi.org/10.30657/pea.2019.24.07.

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Abstract The sieves’ manufacturers that want to be competitive at the market must have the implemented quality control system. Different methods, based on taking the sample, which is a representative of the total quantity of the forming sieves production, are applied for evaluation of the sieve’s conformity. The basic characteristics of this type of the quality function are control, measuring and testing of the forming sieves’ properties at the end of the manufacturing process. The objective is to detect and separate the products that deviate from the set criteria, to remain in the factory, then to be repaired if possible or discarded in the opposite case and thus to prevent delivery of the defective sieves to the paper manufacturers.

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Ming, Ping Mei, Y. J. Li, Y. L. Wang, and W. J. Jiang. "Fabrication of Micro-Precision Sieves with High Open Area Percentage Using Micro-Electroforming Technology." Advanced Materials Research 426 (January 2012): 64–68. http://dx.doi.org/10.4028/www.scientific.net/amr.426.64.

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Precision metal sieve-sheets are one of the key components of several high-tech products. Fabrication of the precision sieve-sheets possessing high open area percentage, large thickness and good quality simultaneously has always been a tickler in micro-machining area. In this paper, aiming to manufacture micro-sieves with open areas of about 90% and good quality, micro-electroforming was taken as a major process means, and the technical points and technical difficulties of some key process steps in the preparation of micro-precision sieves were explored emphatically. Meanwhile, operational conditions were optimized and major technological parameters were selected optimally. Using the optimal conditions as well as the optimum parameters, two specifications of hexagon micromesh sieve-sheets whose side length, open-area percent and sheet-thickness was 210μm, 88%, (120±3)μm and 520μm, 92%, (100±2)μm, respectively, were successfully obtained. The electroformed sieves are characterized by flat and smooth surfaces of aperture walls, sharp edge definition, rigid and homogeneous structures and well-distributed mesh.

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Dissertations / Theses on the topic "Sieves"

1

Kittos, Haris. "Composing with sieves." Thesis, Royal College of Music, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.576926.

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Gibson, Stuart Edward. "Sieves for image retrieval." Thesis, University of East Anglia, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.405401.

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Yoshikawa, Masahito. "Studies on Syntheses of Molecular Sieves Aimed at Extra-Large-Pore Molecular Sieves." Kyoto University, 1999. http://hdl.handle.net/2433/181340.

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Nair, Vinayan. "Characterization of ferrisilicate molecular sieves." Diss., Georgia Institute of Technology, 1987. http://hdl.handle.net/1853/32765.

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Tearle, Kathryn Mary. "Modification of aluminophosphate molecular sieves." Thesis, University of Southampton, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.295923.

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Hampson, Brian. "Characterisation of new molecular sieves." Thesis, University of Edinburgh, 1991. http://hdl.handle.net/1842/14976.

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A general introduction to zeolites and aluminophosphate based molecular sieves is followed by a more detailed review of EU-1 and AlPOj-S, the two molecular sieves studied in this work. The synthesis and characterisation of these molecular sieves is described. The characterisation techniques gave details of the framework structure and composition, surface area, and morphology. A time study of the crystallisation of AlPO4-5 from an aluminophosphate gel containing two organic templates showed the formation of a hydrate phase before the AlPO4-5 phase, the change in pH during hydrothermal crystallisation, and the transformation of the Kaiser alumina spheres to give the spherical morphology of A1PO.4-5 associated with this synthesis procedure. Volumetric adsorption and subsequent desorption of but-n-ene isomers on both molecular sieves at room temperature showed that some strong adsorption of the molecules occurs, which could be removed at higher temperatures. The effect was more pronounced with EU-1. Gravimetric adsorption of various organic compounds on AlPO4-5 showed pore filling values and rates of uptake consistent with the kinetic diameters of the organic molecules. The Langmuir model, found to give the best fit for the adsorption isotherms, was seen to break down at mid-range values of P/P0. Thermal desorption of pyridine from H-EU-1 showed that the acid sites probably exist in or close to the side pockets in the EU-1 channel system, and that a side pocket may contain more than one acid site. The A1PO4-5 samples of spherical morphology were found not to have strong acid sites. The framework of calcined A1PO4-S was seen to be degraded to a denser phase by aqueous salt solutions, whereas as-synthesised samples remained intact The extent of the attack was dependent upon the anion and the solution concentration. A1PO4-11 and AlPO4-25 samples were also attacked but to a lesser extent. EU-1 and A1PO4-S samples acted as acidic catalysts in the isomerisation of but-1-ene. Only but-1-ene, cis and trans but-2-ene were observed in the gaseous phase. A strongly bound residue was detected on the surface of EU-1 by TGA. This residue was seen to deactivate the catalyst in the first instance, but heating the sample with the residue in a vacuum was seen to change the catalytic nature of the zeolite. The activity of the A1PO4-5 samples was lower than EU-1 under identical conditions. However, samples of the AlPO4-5 spheres were seen to have a higher activity than the usual barrels. Investigations gave no solid evidence for the seat to this increased activity, but it is thought that framework defect sites may be responsible.

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Brinen, Jeffrey Lawrence. "Characterization of modified aluminophosphate molecular sieves." Diss., Georgia Institute of Technology, 1989. http://hdl.handle.net/1853/11813.

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He, Heyong. "Structural studies of novel molecular sieves." Thesis, University of Cambridge, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.309870.

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Chagger, Harnit Kaur. "Carbon molecular sieves for air separation." Thesis, University of Newcastle Upon Tyne, 1994. http://hdl.handle.net/10443/851.

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Carbon is one of the naturally occurring elements and has an atomic weight 12.01 atomic mass units (amu) and atomic number 6. It has six electrons and has an electronic configuration of: ls2 2S2 1p2 in the ground state. This element exists in different crystalline forms-diamond, graphite, buckminsterfullerene1 and carbyne2. Carbon also has the ability of catenation via formation of σ and π bonds.

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Heslop, Mark J. "Binary gas adsorption in molecular sieves." Thesis, Loughborough University, 1993. https://dspace.lboro.ac.uk/2134/6861.

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This thesis is concerned with the development of sorption-effect chromatography as a rapid method for the determination of binary gas-mixture adsorption isotherms.There are many alternative non-chromatographic methods but these have inherent disadvantages the direct experimental methods require excessive equilibration times and the predictive methods require the respective pure-component isotherms and an ideal adsorbed phase. A computer simulation has shown that for an alternative chromatographic method, good results will only be obtained if both binary isotherms are close to linear. Sorption-effect chromatography is characterised by the flowrate retention time (TN) which measures the change in column inventory when a perturbation is made to the system. Along with the standard composition retention time (Tx), this extra measurement allows the gradient of each binary isotherm to be evaluated. Subsequent integration will give the respective mixture isotherm. Three gas systems (nitrogen-argon, nitrogen-helium and argon-helium) have been investigated over zeolite 5A at different temperatures. The results confirm that the adsorbed phase amounts decrease, with increasing temperature and that there are degrees of component interaction. Experimentally, thermal fluctuations in the oven will cause noise on the flowrate record making TN determination difficult. Isolation of the column from direct air flow was seen to reduce the noise level. Also, using a computer simulation model, the heat of adsorption for the above zeolite 5A systems will be easily dissipated preventing any unwanted gas temperature rises; the comparatively small column diameter was found to be a significant factor. The employment of delay lines (empty tubes) in various locations has been investigated. To directly determine TN it is necessary to used delay lines downstream of the column. Also, the chromatographic method has been extended to determine mixture isotherms by considering the change in average column pressure rather than the motion of a composition front through the column. Delay lines situated upstream of the column are able to separate these two effects, and preliminary results are satisfactory. However, the use of delay lines anywhere in the system changes the measured retention times and the theory has to be adjusted to account for this.

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Books on the topic "Sieves"

1

Szostak, R. Molecular Sieves. Dordrecht: Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-010-9529-7.

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Harman, G. Prime-detecting sieves. Princeton: Princeton University Press, 2007.

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Greaves, George. Sieves in Number Theory. Berlin, Heidelberg: Springer Berlin Heidelberg, 2001. http://dx.doi.org/10.1007/978-3-662-04658-6.

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Szostak, R. Handbook of molecular sieves. New York: Van Nostrand Reinhold, 1992.

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Handbook of molecular sieves. New York: Van Nostrand Reinhold, 1992.

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Greaves, George. Sieves in Number Theory. Berlin, Heidelberg: Springer Berlin Heidelberg, 2001.

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G, Karge H., and Weitkamp J, eds. Molecular sieves: Science and technology. Berlin: Springer-Verlag, 1998.

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8

Dyer, A. An introduction to zeolite molecular sieves. Ann Arbor, MI: UMI, 1998.

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Dyer, A. An introduction to zeolite molecular sieves. Chichester: J. Wiley, 1988.

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10

Sathi, Sasidharan N., and Bhabha Atomic Research Centre, eds. Vitrification of spent mordenite molecular sieves. Mumbai: Bhabha Atomic Research Centre, 2002.

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Book chapters on the topic "Sieves"

1

Eggermont, Paul P. B., and Vincent N. LaRiccia. "Sieves." In Springer Series in Statistics, 145–67. New York, NY: Springer New York, 2009. http://dx.doi.org/10.1007/b12285_4.

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Bonardet, J. L., A. Gédéon, M. A. Springuel-Huet, and J. Fraissard. "NMR of Physisorbed 129Xe Used as a Probe to Investigate Molecular Sieves." In Molecular Sieves, 155–248. Berlin, Heidelberg: Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/3829_004.

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van Koningsveld, H., and J. M. Bennett. "Zeolite Structure Determination from X-Ray Diffraction." In Molecular Sieves, 1–29. Berlin, Heidelberg: Springer Berlin Heidelberg, 1999. http://dx.doi.org/10.1007/3-540-69749-7_1.

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Fitch, A. N., and H. Jobic. "Structural Information from Neutron Diffraction." In Molecular Sieves, 31–70. Berlin, Heidelberg: Springer Berlin Heidelberg, 1999. http://dx.doi.org/10.1007/3-540-69749-7_2.

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Terasaki, O. "Electron Microscopy Studies in Molecular Sieve Science." In Molecular Sieves, 71–112. Berlin, Heidelberg: Springer Berlin Heidelberg, 1999. http://dx.doi.org/10.1007/3-540-69749-7_3.

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Depmeier, W. "Structural Distortions and Modulations in Microporous Materials." In Molecular Sieves, 113–40. Berlin, Heidelberg: Springer Berlin Heidelberg, 1999. http://dx.doi.org/10.1007/3-540-69749-7_4.

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Meier, W. M., and C. Baerlocher. "Zeolite Type Frameworks: Connectivities, Configurations and Conformations." In Molecular Sieves, 141–61. Berlin, Heidelberg: Springer Berlin Heidelberg, 1999. http://dx.doi.org/10.1007/3-540-69749-7_5.

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Pfenninger, A. "Manufacture and Use of Zeolites for Adsorption Processes." In Molecular Sieves, 163–98. Berlin, Heidelberg: Springer Berlin Heidelberg, 1999. http://dx.doi.org/10.1007/3-540-69749-7_6.

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Szostak, R. "Molecular Sieves for Use in Catalysis." In Molecular Sieves, 1–50. Dordrecht: Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-010-9529-7_1.

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Szostak, R. "Hydrothermal Zeolite Synthesis." In Molecular Sieves, 51–132. Dordrecht: Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-010-9529-7_2.

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Conference papers on the topic "Sieves"

1

Lau, Brian, Tien-Hsin Chao, Eng Chong Ha, Eric R. Hegblom, and William J. Miceli. "Image sieves." In SPIE's 1995 Symposium on OE/Aerospace Sensing and Dual Use Photonics, edited by Harold H. Szu. SPIE, 1995. http://dx.doi.org/10.1117/12.205408.

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Shabanov, B. M., and D. V. Velibekov. "THE CARRIER SYSTEMS OF THE TRUCK FROM THE FRONT HITCH EXTERNAL EQUIPMENT." In STATE AND DEVELOPMENT PROSPECTS OF AGRIBUSINESS Volume 2. DSTU-Print, 2020. http://dx.doi.org/10.23947/interagro.2020.2.266-268.

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The article presents an analysis of tests of serial and experimental upper louver sieves. The adjustments of the serial and experimental sieves were the same. Comparative tests were carried out on the harvesting of wheat of the "Bezostaya-1" variety with the reference combine "don-1500" when replacing the upper sieve. The results of tests of serial and experimental louver sieves are presented.

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Fritsch, A., R. Gadow, and A. Killinger. "Development of Highly Wear Resistant Coatings for Deflector Blades in Paper Industry." In ITSC 2000, edited by Christopher C. Berndt. ASM International, 2000. http://dx.doi.org/10.31399/asm.cp.itsc2000p1051.

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Abstract In the sieve section of a paper producing machine, where the formation of paper occurs, a polyethylene sieve is guided over a set of ceramic blades to remove the water in the paper slurry. These sieves are running with velocities of 70 km/h and more. The high velocities lead to defects in the tissue structure of the sieve as well as on the blades. Moreover the presence of high abrasive particles like kaolin and carbonates in the paper slurry as well as its corrosive characteristics enforce the material wear. Present solutions include bulk ceramic blades but they cause defects on the sieves and they are quite expensive. New solutions are desired where these bulk ceramic blades can be replaced by intelligent coating systems that on one hand exhibit an extraordinarily high wear resistance but can minimize the wear of the PE sieve on the other hand. The presentation gives first results obtained by different types of ceramic and cermetic coating systems manufactured by thermal spray technology.

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Oktem, Figen S., Farzad Kamalabadi, and Joseph M. Davila. "Computational spectral imaging with photon sieves." In 2016 24th Signal Processing and Communication Application Conference (SIU). IEEE, 2016. http://dx.doi.org/10.1109/siu.2016.7495768.

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Rose, Susan K., Allen K. MacKnight, and Dina El Sherif. "CO2 Removal with Enhanced Molecular Sieves." In International Conference On Environmental Systems. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1997. http://dx.doi.org/10.4271/972431.

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Oktem, Figen S., Joseph M. Dovila, and Farzad Kamalabadi. "Image formation model for photon sieves." In 2013 20th IEEE International Conference on Image Processing (ICIP). IEEE, 2013. http://dx.doi.org/10.1109/icip.2013.6738489.

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Xue, Yinfei, Weihao Ge, Chinhua Wang, and Bing Cao. "Subwavelength focusing of nanopatterned photon sieves." In Photonics Asia 2010, edited by Yunlong Sheng, Chongxiu Yu, and Linsen Chen. SPIE, 2010. http://dx.doi.org/10.1117/12.870021.

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Lindley, Sam. "Implementing deterministic declarative concurrency using sieves." In the 2007 workshop. New York, New York, USA: ACM Press, 2007. http://dx.doi.org/10.1145/1248648.1248657.

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Rose, S. K., S. Daviaud, R. A. J. Dams, and G. Tan. "CO2 Removal by Hydrophobic Molecular Sieves." In International Conference On Environmental Systems. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1993. http://dx.doi.org/10.4271/932271.

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KRUPIČKA, Josef, Petr ŠAŘEC, and Petr NOVÁK. "GRANULOMETRIC STUDY OF NPK 20-8-8 AND DOLOPHOS FERTILIZERS." In Rural Development 2015. Aleksandras Stulginskis University, 2015. http://dx.doi.org/10.15544/rd.2015.010.

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Physical properties of commercial fertilizers play important role from precision application point of view. Granulometric evaluation is usually performed by sieve separation according ČSN 01 5030 standard. The main subject of this work is the presentation of separation results when vertical airflow is used with NPK 20-8-8 and Dolophos fertilizers. The sample was divided into 8 individual specimens of 0.5 kg weight that was measured repeatedly. Every class of the specimen was than sieved on the sieves with holes 2 mm, 3.5 mm, and 5 mm resulting four new subclasses characterized by the sieve mesh dimension. It was achieved by statistical evaluation that relative frequencies are in agreement with N-distribution. It is clear from achieved values that in NPK 20-8-8 fertilizer samples there are 92.25 % of particles with dimension from 3.15 to 5 mm and 7.0 % with dimension from 2 to 3.15 mm. In fertilizer Dolophos there are 50.87 % of particles with dimension from 3.15 to 5 mm and 47.54% with dimension from 2 to 3.15 mm.

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Reports on the topic "Sieves"

1

Freed, N., and S. Vedam. Sieve Email Filtering: Sieves and Display Directives in XML. RFC Editor, March 2010. http://dx.doi.org/10.17487/rfc5784.

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2

Beder, Jay H. Sieves and Signal Extraction. Fort Belvoir, VA: Defense Technical Information Center, October 1986. http://dx.doi.org/10.21236/ada177628.

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3

Beder, Jay H. Sieves for Gaussian Processes. Fort Belvoir, VA: Defense Technical Information Center, November 1985. http://dx.doi.org/10.21236/ada166055.

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4

Burchell, T. D., M. R. Rogers, and A. M. Williams. Carbon fiber composite molecular sieves. Office of Scientific and Technical Information (OSTI), June 1996. http://dx.doi.org/10.2172/450756.

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5

Beder, J. Sieves and a Filter for Gaussian Processes. Fort Belvoir, VA: Defense Technical Information Center, April 1985. http://dx.doi.org/10.21236/ada158762.

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6

McKeague, Ian W. The Method of Sieves. A Survey of Recent Applications. Fort Belvoir, VA: Defense Technical Information Center, December 1985. http://dx.doi.org/10.21236/ada164087.

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7

Kunhao Li, Michael Beaver. Advanced Nanostructured Molecular Sieves for Energy Efficient Industrial Separations. Office of Scientific and Technical Information (OSTI), January 2012. http://dx.doi.org/10.2172/1033219.

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Pless, Jason, Tina Maria Nenoff, Terry J. Garino, and Marlene Axness. Tunable ionic-conductivity of collapsed Sandia octahedral molecular sieves (SOMS). Office of Scientific and Technical Information (OSTI), November 2006. http://dx.doi.org/10.2172/899364.

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9

Rigali, Mark J., and Thomas Austin Stewart. Evaluation of Strontium Selectivity by Sandia Octahedral Molecular Sieves (SOMS). Office of Scientific and Technical Information (OSTI), January 2016. http://dx.doi.org/10.2172/1236112.

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10

Baker, Frederick S., Cristian I. Contescu, Nidia C. Gallego, and Timothy D. Burchell. Use of Carbon Fiber Composite Molecular Sieves for Air Separation. Office of Scientific and Technical Information (OSTI), September 2005. http://dx.doi.org/10.2172/929340.

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