Academic literature on the topic 'Magnetic beads concentration'

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Journal articles on the topic "Magnetic beads concentration"

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Shahab, Shayan, Mehran Kasra, and Alireza Dolatshahi-Pirouz. "Design and construction of a novel measurement device for mechanical characterization of hydrogels: A case study." PLOS ONE 16, no. 2 (2021): e0247727. http://dx.doi.org/10.1371/journal.pone.0247727.

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Natural biopolymer-based hydrogels especially agarose and collagen gels, considering their biocompatibility with cells and their capacity to mimic biological tissues, have widely been used for in-vitro experiments and tissue engineering applications in recent years; nevertheless their mechanical properties are not always optimal for these purposes. Regarding the importance of the mechanical properties of hydrogels, many mechanical characterization studies have been carried out for such biopolymers. In this work, we have focused on understanding the mechanical role of agarose and collagen conce
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Silverio, Vania, Miguel Amaral, João Gaspar, Susana Cardoso, and Paulo P. Freitas. "Manipulation of Magnetic Beads with Thin Film Microelectromagnet Traps." Micromachines 10, no. 9 (2019): 607. http://dx.doi.org/10.3390/mi10090607.

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Integration of point-of-care assays can be facilitated with the use of actuated magnetic beads (MB) to perform testing in less expensive settings to enable the delivery of cost-effective care. In this paper we present six different designs of planar microelectromagnets traps (MEMT) with four external coils in series and one central coil connected for an opposite direction of manipulation of MB in microfluidic flows. The development of a simulation tool facilitated the rapid and efficient optimization of designs by presenting the influence of system variables on real time concentrations of MB.
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So, Hyung Suk, Yeong Seok Yoo, and Andreas Schaeffer. "Affinity of Cd and Ni on IDA Immobilized Magnetic Beads with Different Lengths of Spacer Arms." Materials Science Forum 544-545 (May 2007): 187–90. http://dx.doi.org/10.4028/www.scientific.net/msf.544-545.187.

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To develop the extraction media for Cd and Ni from aqueous solutions, magnetic beads containing IDA group with strong attraction to heavy metals were produced using the activating agents Epichlorhydrin (Ep) and 1,4-Butanedioldiglycidylether (Bu), respectively. Then the beads were agitated at a pH of 6 after being added to Cd and Ni aqueous solutions of various concentrations. It was confirmed that the heavy metals combined with the magnetic beads within a short time through the process. After the process, the magnetic beads were collected with a magnet, and then dissolved in acid for the analy
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SHIELDS, MICHAEL J., KRISTEN R. HAHN, TIMOTHY W. JANZEN, et al. "Immunomagnetic Capture of Bacillus anthracis Spores from Food." Journal of Food Protection 75, no. 7 (2012): 1243–48. http://dx.doi.org/10.4315/0362-028x.jfp-12-048.

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Food is a vulnerable target for potential bioterrorist attacks; therefore, a critical mitigation strategy is needed for the rapid concentration and detection of biothreat agents from food matrices. Magnetic beads offer a unique advantage in that they have a large surface area for efficient capture of bacteria. We have demonstrated the efficient capture and concentration of Bacillus anthracis (Sterne) spores using immunomagnetic beads for a potential food application. Magnetic beads from three different sources, with varying sizes and surface chemistries, were functionalized with monoclonal ant
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Heredia, Carla Lorena, dgrado Ling Sham, and lsa Mónica Farfán-Torres. "Tartrazine degradation by supported TiO2on magnetic particles." Matéria (Rio de Janeiro) 20, no. 3 (2015): 668–75. http://dx.doi.org/10.1590/s1517-707620150003.0069.

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ABSTRACTMagnetic beads were obtained by dropping a solution of sodium alginate containing magnetite particles into a CaCl2 solution. TiO2anatase particles were synthetized by a sol-gel method at low temperature (75 °C), and were supported on magnetic beads to obtain the magnetic photocatalyst, MC. Magnetite particles and magnetic photocatalyst were characterized by nitrogen adsorption (BET, surface area), their morphology observed by scanning electronic microscopy (SEM) and TiO2 phase was analyzed by means of Raman spectroscopy. The photocatalytic activity of MC was evaluated on tartrazine deg
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Dung, Nguyễn Tuấn. "Preparation of magnetic antibacterial composite beads Fe3O4/alginate/Ag." Vietnam Journal of Science and Technology 56, no. 3B (2018): 192. http://dx.doi.org/10.15625/2525-2518/56/3b/12791.

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In recent years, the synthesis of magnetic polymer beads has attractive much attention from many technological fields such as biomedical and environmental. In addition of stabilizing effect for magnetic particles core, the polymer shells can also be further functionalized, thus enlarging the spectrum of possible applications of magnetite nanoparticles. In this study, the novel magnetic composite beads Fe3O4/alginate/Ag were synthesized and characterized for point-of-use water disinfection. Magnetite nanoparticles were prepared from waste spent pickling liquors and then were encapsulated by nat
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Yang, Shih-Mo, Punde Tushar Harishchandra, Tung-Ming Yu, Ming-Huei Liu, Long Hsu, and Cheng-Hsien Liu. "Concentration of Magnetic Beads Utilizing Light-Induced Electro-Osmosis Flow." IEEE Transactions on Magnetics 47, no. 10 (2011): 2418–21. http://dx.doi.org/10.1109/tmag.2011.2158194.

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de Castro Alves, Lisandra, Susana Yáñez-Vilar, Yolanda Piñeiro-Redondo, and José Rivas. "Novel Magnetic Nanostructured Beads for Cadmium(II) Removal." Nanomaterials 9, no. 3 (2019): 356. http://dx.doi.org/10.3390/nano9030356.

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This study presents an effective magnetic separation method for cadmium removal, based on the use of a novel nanostructured material as an adsorbent. This adsorbent involves the incorporation of magnetite nanoparticles (Fe3O4-NPs), synthesized by the reverse coprecipitation method, into sodium alginate and activated carbon to form spherical structures by crosslinking Ca2+ ions with the charged alginate chains, referred to as magnetic alginate activated carbon (MAAC) beads. The effect of the experimental parameters, such as pH, contacting time, adsorbent dosage, agitation type, and rotating spe
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Markwalter, Christine F., Paul L. A. M. Corstjens, Claire M. Mammoser, Garrett Camps, Govert J. van Dam, and David W. Wright. "Poly(amidoamine)-coated magnetic particles for enhanced detection of Schistosoma circulating anodic antigen in endemic urine samples." Analyst 144, no. 1 (2019): 212–19. http://dx.doi.org/10.1039/c8an00941d.

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Hamedani, Nasim Shahidi, Fabian Blümke, Fabian Tolle, et al. "Capture and Release (CaR): a simplified procedure for one-tube isolation and concentration of single-stranded DNA during SELEX." Chemical Communications 51, no. 6 (2015): 1135–38. http://dx.doi.org/10.1039/c4cc08233h.

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Dissertations / Theses on the topic "Magnetic beads concentration"

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CHEN, LIJI. "Sparse Sample Detection Using Magnetic Bead Manipulation on a Digital Microfluidic Device." Diss., 2016. http://hdl.handle.net/10161/12815.

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<p>This thesis demonstrates a new way to achieve sparse biological sample detection, which uses magnetic bead manipulation on a digital microfluidic device. Sparse sample detection was made possible through two steps: sparse sample capture and fluorescent signal detection. For the first step, the immunological reaction between antibody and antigen enables the binding between target cells and antibody-­‐‑ coated magnetic beads, hence achieving sample capture. For the second step, fluorescent detection is achieved via fluorescent signal measurement and magnetic bead manipulation. In those two st
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Ying-Huan, Chuang, and 莊英煥. "Using magnetic beads-enriched array display immunoassay and the gold nanoparticles-based lateral flow immunoassay for determination of the prostate cancer biomarker-METCAM/MUC18 concentration in human serum." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/qh4ak5.

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碩士<br>中原大學<br>化學工程研究所<br>107<br>The current serum PSA test for diagnosis of prostate cancer has a 20-25% of false positive results, besides it is impossible to distinguish Benign Prostatic Hyperplasia (BPH) from Prostate cancer; thus, it is still necessary to develop a rapid and accurate diagnosis method for this cancer. In our previous studies we suggest that METCAM/MUC18 has a high potential to be used as a diagnostic biomarker for the detection of prostate cancer. Previously we first used the Western blot method to determine the specificity of several commercial antibodies. Then we used the
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Wei, Yu-Chun, and 魏瑜均. "Comparing magnetic beads-enriched array display immunoassay with the two gold nanoparticles-based lateral flow immunoassay for determination of the prostate cancer biomarker-METCAM/MUC18 concentration in human serum." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/5zysv4.

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碩士<br>中原大學<br>化學工程研究所<br>106<br>The current serum PSA test for diagnosis of prostate cancer has a 20-25% of false positive results, besides it is impossible to distinguish Benign Prostatic Hyperplasia (BPH) from Prostate cancer; thus, it is still necessary to develop a rapid and accurate diagnosis method for this cancer. In our previous studies we suggest that METCAM/MUC18 has a high potential to be used as a diagnostic biomarker for the detection of prostate cancer. Previously we first used the Western blot method to determine the specificity of several commercial antibodies. Then we used the
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Conference papers on the topic "Magnetic beads concentration"

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Liu, Fan, Pawan K. C., Ge Zhang, and Jiang Zhe. "Target Cell Detection via Microfluidic Magnetic Beads Assay." In ASME 2016 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/imece2016-65088.

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We present a novel cell detection device based on a magnetic bead cell assay and microfluidic Coulter counting technology. The device can detect specific target cells ratios, as well as cells size distribution and concentrations. The device consists of two identical micro Coulter counters separated by a fluid chamber where an external magnetic field is applied. Target cells conjugated with magnetic beads are retarded by the magnetic field; transit time of a target cell passing through the second counter is longer than that through the first counter. In comparison, a non-target cell transit thr
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Wang, Yi Zhong, Yuejun Zhao, and Sung Kwon Cho. "In-Droplet Magnetic Beads Concentration and Separation for Digital Microfluidics." In TRANSDUCERS 2007 - 2007 International Solid-State Sensors, Actuators and Microsystems Conference. IEEE, 2007. http://dx.doi.org/10.1109/sensor.2007.4300229.

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Nguyen, Thanh-Qua, Jeongyun Kim, Daewoong Lee, et al. "Immobilization of Magnetic Beads for Microfluidic Immunoassays." In ASME-JSME-KSME 2019 8th Joint Fluids Engineering Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/ajkfluids2019-5401.

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Abstract Employing magnetic beads (MBs) to microfluidic chips has enabled diverse microscale biomedical applications involving isolation of target molecules, such as, separation, and biosensing. In this report a microfluidic immunoassay chip that can temporarily immobilize MBs for the detection of target biomarkers within a sample solution flown through its channels is introduced. A through-hole structure of the MB capture zone and valves that can control the direction of the flow enabled immobilization of MBs with high reproducibility. Controlling immobilization of MBs shows promise for repro
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Sasso, Lawrence A., and Jeffrey D. Zahn. "Continuous Microfluidic Biosensing With Conjugated Paramagnetic Beads." In ASME 2008 International Mechanical Engineering Congress and Exposition. ASMEDC, 2008. http://dx.doi.org/10.1115/imece2008-67686.

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A microfluidic biosensing assay has been designed and tested with streptavidin coated paramagnetic microbeads and fluorescently conjugated biotin (Biotin-FITC). The device is a three-inlet, three-outlet channel made by soft lithography of polydimethylsiloxane (PDMS). A novel magnetic actuation scheme is used to manipulate the beads within the channel. The device has proven capable of measuring the antigen concentration of a continuous sample stream. It is proposed that this technology could be applied as a real-time immunosensing assay.
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Lien, Kang-Yi, Chien-Ju Liu, Jyh-Wei Shin, Tsuey-Yu Chang, and Gwo-Bin Lee. "Bead-Based Miniature Microfluidic Systems for Rapid RNA Extraction and Reverse Transcription." In ASME 2008 First International Conference on Micro/Nanoscale Heat Transfer. ASMEDC, 2008. http://dx.doi.org/10.1115/mnht2008-52268.

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The current study presents a new integrated microfluidic chip for rapid ribonucleic acid (RNA) purification, extraction and reverse transcription (RT) in an automatic fashion. The miniature system consists of two individual functional devices including a two-way microfluidic control module and a magnetic field/temperature control module. The functional microfluidic control module can perform pumping, mixing, purification and concentration of the RNA samples by incorporating with the magnetic bio-separator consisting of 2-dimension twisted microcoils. Notably, the magnetic bio-separators are de
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Baier, Tobias, Swaty Mohanty, Klaus Stefan Drese, Federica Rampf, Jungtae Kim, and Friedhelm Scho¨nfeld. "Modelling Immunomagnetic Cell Capture in CFD." In ASME 2008 6th International Conference on Nanochannels, Microchannels, and Minichannels. ASMEDC, 2008. http://dx.doi.org/10.1115/icnmm2008-62176.

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The separation of cells from a complex sample by immunomagnetic capture has become a standard technique in the last decade and has also obtained increased attention for microfluidic applications. We present a model that incorporates binding kinetics for the formation of cell-bead complexes, which can easily be integrated into a computational fluid dynamics (CFD) code. The model relies on the three equation types: Navier-Stokes equations governing the fluid dynamics, convection-diffusion equations for non-magnetic cells and a Nernst-Planck type equation governing the temporal evolution of cell-
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Lee, Wen-Bin, Hsin-I. Lin, Shu-Chu Shiesh, and Gwo-Bin Lee. "A Magnetic-Bead Based Microfluidic System for Automatic C-Reactive Protein Detection." In ASME 2009 Second International Conference on Micro/Nanoscale Heat and Mass Transfer. ASMEDC, 2009. http://dx.doi.org/10.1115/mnhmt2009-18446.

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C-reactive protein (CRP) has been used as a common indicator during inflammation process. It has been also reported that CRP concentration in serum can be used for risk assessment of cardiovascular diseases. In this study, a new microfluidic system for automatic measurement of CRP is developed. When compared to our previous work, the new chip can perform the entire measurement process by integrating a new micro-injector with other functional microfluidic devices. Experimental data show that the developed system can automate the entire process within 35 minutes with a high sensitivity. The deve
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