Relevant bibliographies by topics / Concentration technique

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Concentration technique'

Author: Grafiati
Published: 7 September 2021
Last updated: 1 February 2022

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Journal articles on the topic "Concentration technique"

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Bo Lu, Bo Lu, and Jiwei Wu Jiwei Wu. "Quantifying spectroscopic concentration ratio by polarization subtraction technique." Chinese Optics Letters 11, s2 (2013): S23001–323004. http://dx.doi.org/10.3788/col201311.s23001.

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Tanioka, Goichi, Hideya Kametaka, Masaaki Okubo, Tomoyuki Kuroki, and Toshiaki Yamamoto. "624 Concentration Technique for Low Concentration NO using Nonthermal Plasma." Proceedings of Conference of Kansai Branch 2001.76 (2001): _6–45_—_6–46_. http://dx.doi.org/10.1299/jsmekansai.2001.76._6-45_.

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Taglioretti, V., N. Sardella, and M. Fugassa. "Effectiveness of coproscopic concentration techniques." Helminthologia 51, no. 3 (September 1, 2014): 210–14. http://dx.doi.org/10.2478/s11687-014-0231-x.

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AbstractThe aim of the present study was to compare the effectiveness of the concentration techniques of flotation-centrifugation with zinc chloride (FZn) (δ = 1.45) with the spontaneous sedimentation (SSed) and the sucrose flotation-centrifugation (FSuc) (δ = 1.2) to recuperate gastrointestinal parasites from camelid fecal samples. The technique with more positive results for the detection of Nematodirus sp., Trichuris sp., strongyle-type eggs and Eimeria macusaniensis oocysts was the FZn. For Trichuris sp. and Eimeria macusaniensis, the higher coverglass counts were detected by FZn procedure. No significant differences were registered among centrifugation flotation techniques for Nematodirus spp. Coverglass count for strongyle-type eggs was significantly higher for FSuc than FZn (p = 0.0005) or SSed (p = 0.0005), being also significantly higher for FZn than for SSed (p = 0.008). FZn is a sensitive technique that allows the recovery of parasite elements with high density and it exerts low osmotic pressure avoiding parasite deformation.
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Zhong Ren, Zhong Ren, Guodong Liu Guodong Liu, and Zhen Huang Zhen Huang. "Investigation of glucose concentration measurement based on tunable pulsed laser induced photoacoustic technique." Chinese Optics Letters 11, s2 (2013): S21701–321704. http://dx.doi.org/10.3788/col201311.s21701.

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Arouca, Fábio de Oliveira, L. C. O. Lopes, and João Jorge Ribeiro Damasceno. "Concentration Profiles and Iso-Concentration Curves for Batch Settling Using the Gamma Rays Attenuation Technique." Materials Science Forum 530-531 (November 2006): 29–34. http://dx.doi.org/10.4028/www.scientific.net/msf.530-531.29.

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Knowledge of particle concentration is of extreme importance for the settling phenomenon. For well-diluted suspensions the solids concentration can be measured by sampling techniques. However, the use of such a technique for more concentrated suspension does not lead to good results. Knowledge of concentration distribution in sediments formed by decantation of aqueous suspensions inside a vertical vessel is fundamental for the evaluation of performance of some pieces of equipment such as continuous thickeners. In this work, the phenomenon of batch settling of aqueous suspensions of calcium carbonate was studied by using a nondestructive technique based upon the measurement of gamma-ray attenuation when the radiation beam goes through the physical medium as a function of the local concentration in several vertical positions of the vessel, and the sampling of suspension by aliquots is not necessary. The main objective of this work is to evaluate the use of gammaray attenuation technique for achieving concentration distributions in the phenomenon of batch settling as well as curves of iso-concentrations.
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Zhao Hongxia, 赵洪霞, 丁志群 Ding Zhiqun, 王金霞 Wang Jinxia, 方晓惠 Fang Xiaohui, 贾辉 Jia Hui, and 鲍吉龙 Bao Jilong. "A High Sensitivity Concentration Sensing Demodulation Technique." Chinese Journal of Lasers 37, no. 5 (2010): 1294–97. http://dx.doi.org/10.3788/cjl20103705.1294.

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Konishi, Tadashi, Syuji Naka, Akihiko Ito, and Kozo Saito. "Transient two-dimensional fuel-concentration measurement technique." Applied Optics 36, no. 33 (November 20, 1997): 8815. http://dx.doi.org/10.1364/ao.36.008815.

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Sahasrabudhe, Abhishek B., Ranjit R. Desai, and Siddharth K. Jabade. "Modeling and Simulation of a Freeze Concentration Technique for Sugarcane Juice Concentration." Applied Mechanics and Materials 110-116 (October 2011): 2768–73. http://dx.doi.org/10.4028/www.scientific.net/amm.110-116.2768.

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Freeze concentration is a process in which water is selectively separated out of binary solution in the form of ice, thereby concentrating solution. The freeze concentration system under consideration is a heat pump based freeze concentration system (FCS) that uses layer freezing process. The application of this system for the present paper is in the process of jaggery making used to concentrate sugarcane juice. A mathematical model is developed that helps in simulation of system under various operating parameters. The model is validated using previously published experimental results. Finally, based on simulation effects of various system parameters on ice growth and subsequent juice concentration have been discussed.
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Herold, Christian, Stefan Engeli, Bibiana Beckmann, Peter M. Vogt, and Hans-Oliver Rennekampff. "Adipokine concentrations in lipoaspirates may have a role in wound healing." Indian Journal of Plastic Surgery 50, no. 01 (January 2017): 056–63. http://dx.doi.org/10.4103/ijps.ijps_103_16.

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ABSTRACT Objectives: In addition to its use as a volume filler, fat grafting may have a potential role in wound healing based on the concentration of growth factors in the lipoaspirate. In this study, we compare the quantitative and qualitative concentration of the various growth factors and adipokines using the Shippert or the Coleman techniques to prepare the lipoaspirate. Methods: We measured leptin, adiponectin and the growth factors, i.e., acidic fibroblast growth factor (aFGF), basic FGF (bFGF), keratinocyte growth factor (KGF), bone morphogenetic protein-2 (BMP-2) and vascular endothelial growth factor (VEGF) by ELISA in solid and liquid fractions obtained with both techniques in human fat obtained with Coleman technique and Shippert technique. Results: All of these peptides, except BMP-2, were detected in relevant quantities in the solid fraction. The Coleman but not the Shippert technique resulted in statistically higher adiponectin concentrations in the solid tissue fraction. The other four growth factors occurred in significantly higher concentrations in the solid fractions compared to the liquid fractions, independent of the processing technique. Conclusion: In summary, we demonstrated that KGF, aFGF, bFGF and VEGF, as well as leptin and adiponectin, are contained in fat suspensions obtained by liposuction and in the supernatant. Only the concentration of adiponectin was in the range reported to contribute to wound healing.
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IMAJO, TAKASHI. "High Resolution FTIR Spectroscopy with Concentration Modulation Technique." Journal of the Spectroscopical Society of Japan 45, no. 5 (1996): 242–44. http://dx.doi.org/10.5111/bunkou.45.242.

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Dissertations / Theses on the topic "Concentration technique"

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MIYAKE, KOJI, YOSHIKAZU TSUJI, and MASANORI YAMAMOTO. "Microassay of Sperm Concentration in the Rat Epididymis by Micropuncture Technique." Nagoya University School of Medicine, 1993. http://hdl.handle.net/2237/17535.

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Frayer, Daniel Keith. "Measurement of surface concentration of aqueous copper sulfate solutions: An optical technique." Thesis, The University of Arizona, 2000. http://hdl.handle.net/10150/278740.

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An integrated optical waveguide is described that can measure surface concentrations of ions while immersed in an ionic solution, especially the commercially interesting case of ionic copper. Several such sensors were manufactured and tested. The theory behind this measurement technology is described. Techniques for the manufacture and experimental measurement are described. The devices made were able to measure surface concentrations on the order of 10 12 atoms per square centimeter. Several potential methods for improving the performance are given.
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Ouyang, Wei Ph D. Massachusetts Institute of Technology. "Hierarchical selective electrokinetic concentration : the universal next-generation biomolecule enrichment technique for molecular diagnostics." Thesis, Massachusetts Institute of Technology, 2020. https://hdl.handle.net/1721.1/128323.

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Thesis: Ph. D., Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science, 2020
Cataloged from PDF of thesis.
Includes bibliographical references (pages 182-200).
Rapid and reliable detection of ultralow-abundance nucleic acids and proteins in complex biological media may greatly advance clinical diagnostics and biotechnology development. Because of the slow mass transport and weak binding kinetics at ultralow concentration of target biomolecules, enrichment of target biomolecules plays an essential role in the detection of ultralow-abundance biomolecules. Currently, nucleic acid tests rely on enzymatic processes for target amplification (e.g. polymerase chain reaction), which have many inherent issues restricting their implementation in diagnostics. On the other hand, there exist no protein amplification techniques, greatly limiting the development of protein-based diagnosis.
By learning from the desired and undesired features of existing techniques, we designed the blueprint of the next-generation biomolecule enrichment technique, which should ideally be universally applicable to all kinds of biomolecules and be capable of specifically enriching only the target biomolecules among the background biomolecules by billion-fold rapidly. Electrokinetic concentration is a promising candidate for the next-generation biomolecule enrichment technique, because of its simple architecture and ease of operation, high concentration speed, universal applicability, and the rich physics of the system that may enable the development of new functionalities. We defined a technical roadmap of engineering the primitive electrokinetic concentration technique toward the next-generation biomolecule enrichment technique. We start by deciphering the mechanism of electrokinetic concentration (Chapter 2), which is instrumental in the rational design and innovation of the system.
We next developed specific enrichment of target biomolecules in the electrokinetic concentrator based on electrophoretic mobility-based separation and mobility engineering of affinity binders (Chapter 3). We went on to realize the billion-fold enrichment capability of electrokinetic concentrator by massive parallelization and hierarchical cascading of unit electrokinetic concentrators (Chapter 4). After that, we demonstrated the engineered electrokinetic concentrator as an integrated, self-contained platform for universal amplification-free molecular diagnostics (Chapter 5). Finally, we interfaced the engineered electrokinetic concentrator with standard analytics to enhance their analysis sensitivity and greatly simplify their workflows (Chapter 6). At the end of the thesis, we conclude this thesis and present our outlooks on the future directions (Chapter 7).
by Wei Ouyang.
Ph. D.
Ph.D. Massachusetts Institute of Technology, Department of Electrical Engineering and Computer Science
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Furlan, John Michael. "Particle Concentration Measurements in a Centrifugal Slurry Pump Using an A-Scan Ultrasound Technique." Case Western Reserve University School of Graduate Studies / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=case1301325325.

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Tali-Maamar, Nadia. "Modélisation, analyse et commande d'un procédé biotechnologique à gradient spatial de concentration." Toulouse 3, 1994. http://www.theses.fr/1994TOU30031.

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Le procede biotechnologique etudie dans ce memoire est modelise par un systeme d'equations aux derivees partielles non lineaires et non stationnaires. Le modele obtenu est transforme en un systeme d'equations differentielles ordinaires par la methode de collocation orthogonale pour fins de stimulation numerique, d'analyse et, partiellement de synthese de regulateurs. Une etude d'observabilite du systeme en fonction du nombre et de la position des capteurs est exposee. Des algorithmes d'estimation et de commande sont mis en uvre en faisant appel a des techniques non lineaires de type adaptatif exploitant la structure distribuee et non lineaire inherente au modele du bioreacteur a lit fixe etudie. Les differents algorithmes developpes ont ete etudies d'un point de vue theorique puis mis au point en simulation
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Calixto, João Paulo Duarte. "Concentration of tumor biomarkers using aqueous biphasic systems." Master's thesis, Universidade de Aveiro, 2015. http://hdl.handle.net/10773/15353.

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Mestrado em Bioquímica - Bioquímica Clínica
According to the World Health Organization, around 8.2 million people die each year with cancer. Most patients do not perform routine diagnoses and the symptoms, in most situations, occur when the patient is already at an advanced stage of the disease, consequently resulting in a high cancer mortality. Currently, prostate cancer is the second leading cause of death among males worldwide. In Portugal, this is the most diagnosed type of cancer and the third that causes more deaths. Taking into account that there is no cure for advanced stages of prostate cancer, the main strategy comprises an early diagnosis to increase the successful rate of the treatment. The prostate specific antigen (PSA) is an important biomarker of prostate cancer that can be detected in biological fluids, including blood, urine and semen. However, the commercial kits available are addressed for blood samples and the commonly used analytical methods for their detection and quantification requires specialized staff, specific equipment and extensive sample processing, resulting in an expensive process. Thus, the aim of this MSc thesis consisted on the development of a simple, efficient and less expensive method for the extraction and concentration of PSA from urine samples using aqueous biphasic systems (ABS) composed of ionic liquids. Initially, the phase diagrams of a set of aqueous biphasic systems composed of an organic salt and ionic liquids were determined. Then, their ability to extract PSA was ascertained. The obtained results reveal that in the tested systems the prostate specific antigen is completely extracted to the ionic-liquid-rich phase in a single step. Subsequently, the applicability of the investigated ABS for the concentration of PSA was addressed, either from aqueous solutions or urine samples. The low concentration of this biomarker in urine (clinically significant below 150 ng/mL) usually hinders its detection by conventional analytical techniques. The obtained results showed that it is possible to extract and concentrate PSA, up to 250 times in a single-step, so that it can be identified and quantified using less expensive techniques.
De acordo com dados disponibilizados pela Organização Mundial de Saúde, cerca de 8,2 milhões de pessoas morrem anualmente com cancro. A elevada taxa de mortalidade associada ao cancro resulta da maioria dos pacientes não efetuar exames de rotina e porque a manifestação dos sintomas, na maioria dos casos, acontece quando o paciente já se encontra numa fase avançada da doença. Atualmente, o cancro da próstata representa a segunda maior causa de morte entre indivíduos do sexo masculino em todo o mundo. Tendo em conta que não existe cura para casos avançados de cancro da próstata, a estratégia passa por um diagnóstico precoce que permita aumentar a taxa de sucesso dos tratamentos. O antigénio prostático específico (PSA) é um biomarcador importante do cancro da próstata que pode ser detetado em fluidos biológicos, nomeadamente sangue, urina e sémen. No entanto, os kits comerciais disponíveis utilizam amostras de sangue e os métodos analíticos normalmente utilizados na sua deteção e quantificação requerem pessoal especializado, equipamento específico e um processamento extensivo das amostras, resultando em processos com um elevado custo associado. Assim, o objetivo deste mestrado passou por desenvolver um método simples, eficiente e menos dispendioso para a extração e concentração de PSA a partir de amostras de urina utilizando sistemas aquosos bifásicos (SAB) constituídos por líquidos iónicos. Numa fase inicial, determinaram-se os diagramas de fases de um conjunto de sistemas aquosos bifásicos constituídos por um sal orgânico e por líquidos iónicos. Em seguida, avaliou-se a capacidade dos mesmos para a extração do PSA. Os resultados obtidos demonstram que, nos sistemas em estudo, o antigénio prostático específico é totalmente extraído para a fase rica em líquido iónico num único passo. Por fim, averiguou-se a aplicabilidade dos SAB estudados para a concentração do PSA a partir de soluções aquosas e de urina. A baixa concentração deste biomarcador na urina (clinicamente significativo abaixo de 150 ng/mL) dificulta a sua deteção através de técnicas analíticas convencionais. Os resultados obtidos demonstraram que é possível extrair e concentrar PSA até 250 vezes, numa única etapa, sendo este detetável através de técnicas menos dispendiosas.
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Kuppuswamy, Anand. "Theoretical and experimental analysis of strain concentration around a broken fiber using the macro-composite technique." Thesis, This resource online, 1996. http://scholar.lib.vt.edu/theses/available/etd-09182008-063050/.

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White, Andrew Graeme. "The effect of geography, cultivation and harvest technique on the umckalin concentration and growth of pelargonium sidoides (Geraniaceae)." Thesis, Rhodes University, 2007. http://hdl.handle.net/10962/d1003803.

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Pelargonium sidoides DC. (Geraniaceae) root extracts are used in the Eastern Cape Province of South Africa as a traditional medicine for the treatment of respiratory tract and gastro-intestinal infections. Ethanolic extracts are used globally as herbal treatments for bronchitis, asthma and as an immune system booster. Despite documented exploitation of wild populations by illegal harvesters, this species has not been awarded a protected status. The high level of harvest in the years preceding this study prompted this investigation of the prospects for sustainable root harvest through wild harvest and greenhouse cultivation. A novel method was developed for the purification of umckalin, a bioactive constituent in root extracts, such that the root umckalin concentrations of wild and cultivated plants could be quantified by HPLC. As part of the cultivation experiments, the concentration of umckalin in roots was measured for plants across part of the species’ distribution range in the Eastern Cape Province. This survey revealed that root umckalin concentrations were inversely related to the average annual rainfall of the collection site (r² = 0.94, p = 0.007) and directly related to soil pH (r² = 0.97, p = 0.002). Thus, the possibility of inducing high umckalin concentrations in greenhouse-cultivated plants was investigated by subjecting plants to rapid and prolonged water stress treatments. Two leaf applied hormone treatments (cytokinin and gibberellin) and a root competition treatment with a fast growing annual (Conyza albida) were also investigated based on the potential function of umckalin in P. sidoides plants. These five treatments did not significantly affect root umckalin concentrations compared to well-watered controls. The results of further experiments suggested that umckalin production may have been influenced by the geographical origin and genetics of plants rather than environmental variation. Following wild harvest experiments, the regrowth of replanted shoots from which a standard proportion of the root was harvested showed that water availability affected shoot survival but not root regrowth rate. Regrowth rates were low, questioning the viability of wild harvest. In contrast, greenhouse cultivated plants showed ca. six times greater growth rates, supporting the cultivation of roots to supply future market demand.
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Peng, Shuzhi. "Acoustical wave propagator technique for structural dynamics." University of Western Australia. School of Mechanical Engineering, 2005. http://theses.library.uwa.edu.au/adt-WU2005.0069.

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[Truncated abstract] This thesis presents three different methods to investigate flexural wave propagation and scattering, power flow and transmission efficiencies, and dynamic stress concentration and fatigue failures in structural dynamics. The first method is based on the acoustical wave propagator (AWP) technique, which is the main part described in this thesis. Through the numerical implementation of the AWP, the complete information of the vibrating structure can be obtained including displacement, velocity, acceleration, bending moments, strain and stresses. The AWP technique has been applied to systems consisting of a one-dimensional stepped beam, a two-dimensional thin plate, a thin plate with a sharp change of section, a heterogeneous plate with multiple cylindrical patches, and a Mindlin?s plate with a reinforced rib. For this Mindlin?s plate structure, through the comparison of the results obtained by Mindlin?s thick plate theory and Kirchhoff?s classical thin plate theory, the difference of theoretical predicted results is investigated. As part of these investigations, reflection and transmission coefficients, power flow and transmission efficiencies in a onedimensional stepped beam, and power flow in a two-dimensional circular plate structure, are studied. In particular, this technique has been successfully extended to investigate wave propagation and scattering, and dynamic stress concentration at discontinuities. Potential applications are fatigue failure prediction and damage detection in complex structures. The second method is based on experimental techniques to investigate the structural response under impact loads, which consist of the waveform measuring technique in the time domain by using the WAVEVIEW software, and steady-state measurements by using the Polytec Laser Scanning Vibrometer (PLSV) in the frequency domain. The waveform measuring technique is introduced to obtain the waveform at different locations in the time domain. These experimental results can be used to verify the validity of predicted results obtained by the AWP technique. Furthermore, distributions of dynamic strain and stress in both near-field (close to discontinuities) and far-field regions are investigated for the study of the effects of the discontinuities on reflection and transmission coefficients in a one-dimensional stepped beam structure. Experimental results in the time domain can be easily transferred into those in the frequency domain by the fast Fourier transformation, and compared with those obtained by other researchers. This PLSV technique provides an accurate and efficient tool to investigate mode shape and power flow in some coupled structures, such as a ribbed plate. Through the finite differencing technique, autospectral and spatial of dynamic strain can be obtained. The third method considered uses the travelling wave solution method to solve reflection and transmission coefficients in a one-dimensional stepped beam structure in the time domain. In particular, analytical exact solutions of reflection and transmission coefficients under the given initial-value problem are derived. These analytical solutions together with experimental results can be used to compare with those obtained by the AWP technique.
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Gordon, Christopher, and res cand@acu edu au. "Hydrostatic and thermal influences on intravascular volume determination during immersion: quantification of the f-cell ratio." Australian Catholic University. School of Exercise Science, 2001. http://dlibrary.acu.edu.au/digitaltheses/public/adt-acuvp4.14072005.

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Previous data have shown that the most prevalent, indirect plasma volume (PV) measurement technique, which utilises changes in haematocrit (Hct) and haemoglobin concentration ([Hb]), underestimates actual PV changes during immersion, when compared to a direct tracer-dilution method. An increase in the F-cell ratio (whole-body haematocrit (Hctw) to large-vessel haematocrit (Hctv) ratio) has been purported as a possible explanation, probably due to hydrostatic and thermally-mediated changes during water immersion. Previous investigators have not quantified the F-cell ratio during immersion. Therefore, this study sought to determine the effect of the F-cell ratio on the indirect method during both, thermoneutral and cold-water immersions. Seven healthy males were tested three times, seated upright in air (control: 21.2°C SD ±1.1), and during thermoneutral (34.5oC SD ±0.2) and cold-water immersion (18.6oC SD ±0.2), immersed to the third intercostal space for 60 min. Measurements during the immersion tests included PV (Evans blue dye column elution, Evans blue dye computer programme, and Hct [Hb]), red cell volume (RCV; sodium radiochromate), cardiac frequency (fc) and rectal temperature (Tre). Plasma volume during the control trial remained stable, and equivalent across the three tests. There was a hydrostatically-induced increase in PV during thermoneutral immersion, when determined by the Evans blue dye method (16.2%). However, the Hct/[Hb] calculation did not adequately reflect this change, and underestimated the relative PV change by 43%. In contrast, PV decreased during cold immersion when determined using the Evans blue dye method by 17.9% and the Hct/[Hb] calculation by 8.0%, respectively, representing a 52% underestimation by the latter method. There was a non-significant decline in RCV during both immersions. Furthermore, an increase (8.6%) and decrease (-14.4%) in blood volume (BV) was observed during thermoneutral and cold-water immersions, respectively. The decline in RCV during thermoneutral immersion attenuated the BV expansion. Despite the disparity between the PV methods, there was no increase in the F-cell ratio during either immersion. In contrast, there was a significant decline in the F-cell ratio during the control: air and thermoneutral immersion, which may indicate that other, undefined variables may impact on the stability of the red cell compartment. The current study is the first to show that the Hct/[Hb] method clearly underestimates PV changes during both thermoneutral and cold-water immersion. Furthermore, RCV was shown, for the first time, to decline during both immersions. However, the changes in the F-cell ratio during this study, did not account for the underestimation of PV change using the Hct/[Hb] method.
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Books on the topic "Concentration technique"

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M, Lyne Patricia, and Grange John M, eds. minimum inhibitory concentration Collins and Lyne's microbiological methods. 7th ed. Oxford: Butterworth-Heinemann, 1995.

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Kaupert, Kevin A. A unique light extinction calibration technique for particle concentrations in dusty gas flows. [Downsview, Ont.]: University of Toronto, 1992.

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Pressac, Jean-Claude. Auschwitz: Technique and operation of the gas chambers. New York, N.Y: Beate Klarsfeld Foundation, 1989.

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Leuchter, Fred A. The fourth Leuchter report: An engineering evaluation of Jean-Claude Pressac's book "Auschwitz: technique and operation of the gas chambers". Boston, Mass: Fred A. Leuchter Associates, Inc., 1991.

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Yogananda. Praecepta book: Physical perfection by will or tissue-will system of body and mind perfection and highest technique of concentration and meditation. Dallas, Tex: Amrita Foundation, Inc., 1993.

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Kaupert, Kevin A. A unique light extinction calibration technique for particle concentrations in dusty gas flows. Ottawa: National Library of Canada = Bibliothèque nationale du Canada, 1993.

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L, Gerbarg Patricia, ed. The healing power of the breath: Simple techniques to reduce stress and anxiety, enhance concentration, and balance your emotions. Boston, Mass: Trumpeter, 2012.

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Driver, Nancy E. Techniques for estimation of storm-runoff loads, volumes, and selected constituent concentrations in urban watersheds in the United States. Washington, DC: Dept. of the Interior, 1990.

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Driver, Nancy E. Techniques for estimation of storm-runoff loads, volumes, and selected constituent concentrations in urban watersheds in the United States. Washington: U.S. G.P.O., 1990.

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Koltun, G. F. Influence of size-fractioning techniques on concentrations of selected trace metals in bottom materials from two streams in northeastern Ohio. Columbus, Ohio: U.S. Dept. of the Interior, Geological Survey, 1986.

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Book chapters on the topic "Concentration technique"

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Huang, Haihong, Zhengchun Qian, and Zhifeng Liu. "Stress Concentration Impacts on MMM Signals." In Metal Magnetic Memory Technique and Its Applications in Remanufacturing, 83–115. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-1590-0_6.

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Arouca, F. O., L. C. O. Lopes, and João Jorge Ribeiro Damasceno. "Concentration Profiles and Iso-Concentration Curves for Batch Settling Using the Gamma Rays Attenuation Technique." In Materials Science Forum, 29–34. Stafa: Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-423-5.29.

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Hikasa, Yuji. "Diagnostic technique for nitrogen nutrition of cabbage to increase sugar concentration." In Plant Nutrition for Sustainable Food Production and Environment, 369–70. Dordrecht: Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-009-0047-9_111.

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Murrell, T. Scott, and Dharma Pitchay. "Evaluating Plant Potassium Status." In Improving Potassium Recommendations for Agricultural Crops, 219–61. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-59197-7_9.

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AbstractSeveral methods exist for evaluating plant nutritional status. Looking for visual deficiency symptoms is perhaps the simplest approach, but once symptoms appear, crop performance has already been compromised. Several other techniques have been developed. All of them require correlation studies to provide plant performance interpretations. Reflectance is a remote sensing technique that detects changes in light energy reflected by plant tissue. It has proven successful in detecting nutrient deficiencies but does not yet have the ability to discriminate among more than one deficiency. Chemical assays of leaf tissue, known as tissue tests, require destructive sampling but are the standard against which other assessments are compared. Sufficiency ranges provide concentrations of each nutrient that are considered adequate for crop growth and development. They consider nutrients in isolation. Other approaches have been developed to consider how the concentration of one nutrient in tissue impacts the concentrations of other nutrients. These approaches strive to develop guidelines for maintaining nutrient balance within the plant. All approaches require large data sets for interpretation.
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Chen, Jiying, Shuanghe Chi, Gaoyuan Cheng, and Wenqin Zha. "Application of Fuzzy Algorithm’s Equal Flow Information Sampling Technique in Smoke Concentration Monitoring." In Data Processing Techniques and Applications for Cyber-Physical Systems (DPTA 2019), 1747–56. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-1468-5_208.

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Chinn, D. J., P. R. Souza, and H. F. Robey. "An Acoustic Technique for the Noninvasive in-Situ Measurement of Crystal Size and Solution Concentration." In Review of Progress in Quantitative Nondestructive Evaluation, 2201–7. Boston, MA: Springer US, 1999. http://dx.doi.org/10.1007/978-1-4615-4791-4_282.

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Scholz, T., B. Jähne, H. Suhr, G. Wehnert, P. Geissler, and K. Schneider. "In situ determination of cell concentration in bioreactors with a new depth from focus technique." In Computer Analysis of Images and Patterns, 392–99. Berlin, Heidelberg: Springer Berlin Heidelberg, 1995. http://dx.doi.org/10.1007/3-540-60268-2_321.

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Marlewski, Maciej, Ryszard T. Smolenski, Arian Laurence, H. Anne Simmonds, and Julian Swierczynski. "Evaluation Of Adenine Concentration in Plasma of Patients with Renal Failure Using Improved Ultrafiltration Technique." In Advances in Experimental Medicine and Biology, 785–87. Boston, MA: Springer US, 1998. http://dx.doi.org/10.1007/978-1-4615-5381-6_150.

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Chen, Guang Li, Hao Ran Geng, Jun Hua Chen, Hui Li, and Zhong Quan Guo. "Formation of Cf/C Composites with SiC Concentration Gradient on the Surface by SHCLD Technique." In Key Engineering Materials, 1310–13. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-456-1.1310.

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Katoch, Rajan. "Expression of Concentration." In Analytical Techniques in Biochemistry and Molecular Biology, 9–28. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-9785-2_2.

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Conference papers on the topic "Concentration technique"

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Huang, Zhen, Guodong Liu, Zhong Ren, and Lvming Zeng. "Glucose concentration measurement using photoacoustic technique." In International Conference on Optical Instruments and Technology 2015, edited by Jigui Zhu, Hwa-Yaw Tam, Kexin Xu, Hai Xiao, and Sen Han. SPIE, 2015. http://dx.doi.org/10.1117/12.2185819.

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Lee, John H., Javier Jimenez, Xiang Zhang, Duane S. Boning, and Brian W. Anthony. "Ultrasound image-based absolute concentration measurement technique for materials with low scatterer concentration." In 2015 IEEE International Ultrasonics Symposium (IUS). IEEE, 2015. http://dx.doi.org/10.1109/ultsym.2015.0208.

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Roxana, Oprea, Istrate Marcel, and Machidon Dragos. "Efficiency Analysis of Solar Radiation Concentration Technique for a Low Concentration Photovoltaic System." In 2018 International Conference and Exposition on Electrical And Power Engineering (EPE). IEEE, 2018. http://dx.doi.org/10.1109/icepe.2018.8559834.

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Ariyakul, Yossiri, and Sumek Wisayataksin. "Data Modulation Technique Using Concentration of Odor Molecules." In 2018 IEEE Sensors. IEEE, 2018. http://dx.doi.org/10.1109/icsens.2018.8589765.

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Furlan, John M., Venkat Mundla, Jaikrishnan Kadambi, Nathaniel Hoyt, Robert Visintainer, and Greame Addie. "Localized Particle Concentration Measurement in Slurry Flows Using A-Scan Ultrasound Technique." In ASME 2009 Fluids Engineering Division Summer Meeting. ASMEDC, 2009. http://dx.doi.org/10.1115/fedsm2009-78051.

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In the design of slurry transport equipment, the effects of solid particle concentration on hydraulic performance and wear have to be considered. This study involves examining the acoustic properties of slurry flows such as velocity, backscatter and attenuation as a function of volume fraction of solid particles. Ultrasound A-mode imaging method is developed to obtain particle concentration in a flow of soda lime glass particles (diameter of 200 micron) and water slurry in a 1″ diameter pipe. Based on the acoustic properties of the slurry a technique is developed to measure local solid particle concentrations. The technique is used to obtain concentration profiles in homogeneous (vertical flow) and non-homogeneous (horizontal flow) slurry flows with solid particle concentrations ranging from 1–10% by volume. The algorithm developed utilizes the power spectrum and attenuation measurements obtained from the homogeneous loop as calibration data in order to obtain concentration profiles in other (i.e. non-homogenous) flow regimes. A computational study using FLUENT was performed and a comparison is made with the experimental results. A reasonable agreement between the experimental and computational results is observed.
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Han, Hyun Kyu, Jenni M. Buckley, Kathy Kursa, Conor O’Neill, and Jeffrey C. Lotz. "Microdialysis Technique for Quantifying Drug Concentration in Human Intervertebral Discs." In ASME 2009 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2009. http://dx.doi.org/10.1115/sbc2009-206176.

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New diagnostic and treatment techniques for chronic lower back pain involve localized drug delivery into the lumbar intervertebral disc [1,2]. A better understanding of these new techniques could be gained by measuring drug concentration at specific intradiscal locations at different time points [1]. Currently, there are no established methods for quantifying real-time in situ drug concentrations in the human intervertebral disc; however, injection profiles have been successfully characterized in pig disc, human brain, adipose tissue, and blood using microdialysis [3,4,5]. This technique involves continuous sampling of interstitial fluid via semi-permeable membranes mounted on miniature, implantable catheters [6]. Given the success of microdialysis in characterizing the real-time composition of other poroelastic tissues, we hypothesize that this method will be similarly successful when applied to human lumbar disc.
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Hu, Shenggen, and Bruce Firth. "Measurement of Solids Concentration in Slurries Using Electrical Impedance Spectroscopy Technique (Keynote)." In ASME/JSME 2003 4th Joint Fluids Summer Engineering Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/fedsm2003-45487.

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In this research work, an electrical impedance spectroscopy technique has been developed to measure the solids concentration of slurry mixtures. This new measurement technique is based on the fact that the AC frequency responses of solids are distinct from those for the liquid phase. In this technique, the electrical impedance spectrum of slurry mixtures is measured over the frequency range of 0.1 Hz to 1 MHz. Changes in the frequency response at different excitation signal amplitudes reflect changes in the slurry composition and the electrical conductivity of the liquid phase, and by analyzing the spectra using artificial intelligence data analysis techniques, such as Multiplayer Perceptron Artificial Neural Network, one can determine the volumetric fraction of the solids phase. The technique has been successfully tested for various slurries under different conductivities of liquid phase and temperatures. In contrast with previous techniques based on conductivity or capacitance, this new technique can be used for on-line measurement of solids concentration in slurry streams even when the conductivity of the liquid phase changes substantially with time.
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Leipertz, Alfred, and Jurgen Haumann. "Time-resolved Concentration Measurements Using Rayleigh Scattering Correlation Technique." In Advanced Course in Measurement Techniques in Heat and MassTransfer. Connecticut: Begellhouse, 1985. http://dx.doi.org/10.1615/ichmt.1985.advcoursemeastechheatmasstransf.100.

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Querido, D. C. M., D. R. Bizari, K. L. Grecco, P. L. Oliveira, T. G. Mendonça, and C. F. Souza. "TDR Technique Calibration for Estimating Ions Concentration in Soil." In II Inovagri International Meeting. Fortaleza, Ceará, Brasil: INOVAGRI/INCT-EI/INCTSal, 2014. http://dx.doi.org/10.12702/ii.inovagri.2014-a201.

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Hofeldt, David L. "Real-Time Soot Concentration Measurement Technique for Engine Exhaust Streams." In International Congress & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1993. http://dx.doi.org/10.4271/930079.

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Reports on the topic "Concentration technique"

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May, Iain, Lisa Colletti, and Sean Reilly. Uranium Concentration Measurement Technique Viability Analysis. Office of Scientific and Technical Information (OSTI), December 2014. http://dx.doi.org/10.2172/1166799.

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Tomita, Eiji, and Nobuyuki Kawahara. Unburned Hydrocarbons Concentration Measurement in an Exhaust Pipe by Infrared Absorption Technique. Warrendale, PA: SAE International, September 2005. http://dx.doi.org/10.4271/2005-08-0587.

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Reaugh, J. E., and J. W. Kury. A Measurement Technique to Determine the Sensitivity of Trained Dogs to Explosive Vapor Concentration. Office of Scientific and Technical Information (OSTI), April 2002. http://dx.doi.org/10.2172/15004654.

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Kedzierski, Mark A., Thomas J. Bruno, and Matt B. O'Neill. A new insitu technique for measuring the concentration of lubricant on a boiling heat transfer surface. Gaithersburg, MD: National Institute of Standards and Technology, 1998. http://dx.doi.org/10.6028/nist.ir.6110.

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Doyle, Barney L. Development of eXternal Nuclear Reaction Analysis (XNRA) Detection Technique for Quantifying Light Isotope Concentrations. Office of Scientific and Technical Information (OSTI), October 2019. http://dx.doi.org/10.2172/1571550.

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Doyle, Barney L., Caitlin Anne Taylor, Khalid Mikhiel Hattar, and Brittany R. Muntifering. Development of Elastic Recoil Detection Technique for Quantifying Light Isotope Concentrations in Irradiated TPBAR Materials. Office of Scientific and Technical Information (OSTI), October 2018. http://dx.doi.org/10.2172/1481590.

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Schmidt, E. Improved techniques for manufacturing the Alpha Solarco concentrating photovoltaic system. Final subcontract report, 9 January 1991--14 April 1991. Office of Scientific and Technical Information (OSTI), November 1991. http://dx.doi.org/10.2172/10106761.

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Riveros, Guillermo, Felipe Acosta, Reena Patel, and Wayne Hodo. Computational mechanics of the paddlefish rostrum. Engineer Research and Development Center (U.S.), September 2021. http://dx.doi.org/10.21079/11681/41860.

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Purpose – The rostrum of a paddlefish provides hydrodynamic stability during feeding process in addition to detect the food using receptors that are randomly distributed in the rostrum. The exterior tissue of the rostrum covers the cartilage that surrounds the bones forming interlocking star shaped bones. Design/methodology/approach – The aim of this work is to assess the mechanical behavior of four finite element models varying the type of formulation as follows: linear-reduced integration, linear-full integration, quadratic-reduced integration and quadratic-full integration. Also presented is the load transfer mechanisms of the bone structure of the rostrum. Findings – Conclusions are based on comparison among the four models. There is no significant difference between integration orders for similar type of elements. Quadratic-reduced integration formulation resulted in lower structural stiffness compared with linear formulation as seen by higher displacements and stresses than using linearly formulated elements. It is concluded that second-order elements with reduced integration and can model accurately stress concentrations and distributions without over stiffening their general response. Originality/value – The use of advanced computational mechanics techniques to analyze the complex geometry and components of the paddlefish rostrum provides a viable avenue to gain fundamental understanding of the proper finite element formulation needed to successfully obtain the system behavior and hot spot locations.
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Techniques for estimation of storm-runoff loads, volumes, and selected constituent concentrations in urban watersheds in the United States. US Geological Survey, 1990. http://dx.doi.org/10.3133/wsp2363.

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Influence of size-fractioning techniques on concentrations of selected trace metals in bottom materials from two streams in northeastern Ohio. US Geological Survey, 1986. http://dx.doi.org/10.3133/wri864114.

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