Relevant bibliographies by topics / Isolation techniques

Contents

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

Academic literature on the topic 'Isolation techniques'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Isolation techniques"

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Brodsky, Jay B., and Sean Mackey. "Isolation Techniques." Seminars in Cardiothoracic and Vascular Anesthesia 1, no. 3 (September 1997): 225–35. http://dx.doi.org/10.1177/108925329700100305.

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Campos, Javier H. "LUNG ISOLATION TECHNIQUES." Anesthesiology Clinics of North America 19, no. 3 (September 2001): 455–74. http://dx.doi.org/10.1016/s0889-8537(05)70243-1.

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Li, Pin, Melisa Kaslan, Sze Han Lee, Justin Yao, and Zhiqiang Gao. "Progress in Exosome Isolation Techniques." Theranostics 7, no. 3 (2017): 789–804. http://dx.doi.org/10.7150/thno.18133.

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Sinanoglu, O., and T. Petrov. "Isolation Techniques for Soft Cores." IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems 27, no. 8 (August 2008): 1453–66. http://dx.doi.org/10.1109/tcad.2008.925794.

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Mattar, Rahif E., Ayman M. Sulimany, Saad S. Binsaleh, and Ibrahim M. Al-Majed. "Comparison of Fissure Sealant Chair Time and Patients’ Preference Using Three Different Isolation Techniques." Children 8, no. 6 (May 25, 2021): 444. http://dx.doi.org/10.3390/children8060444.

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This randomized clinical trial aimed to evaluate the patient’s preference and chair time needed during pit and fissure sealant placement under three isolation techniques (Isolite system, rubber dam isolation, and cotton roll isolation). Participants, aged 6–15 years and requiring four sealants on the first or second permanent molars, attending the pediatric dental clinics at King Saud University in Saudi Arabia were enrolled according to the inclusion criteria. Each participant received sealants on three random first or second permanent molars using three isolation techniques. The time required for sealant placement was recorded for each technique. Following sealant placement, an interview-based questionnaire was administered to the participants to evaluate their preference regarding the isolation techniques. Forty-eight children (23 male and 25 female) with a mean age of 8.58 ± 1.93 years participated in this study. The mean chair times were 248.14, 255.89, and 243.29 s for the Isolite system, rubber dam isolation, and cotton roll isolation, respectively. Approximately 79% of participants considered cotton roll isolation to be the most comfortable, whereas approximately 71% were significantly less likely to use rubber dam isolation again. In conclusion, there were no significant differences in sealant placement time among the three isolation techniques. However, cotton roll isolation was the technique that was most preferred by the participants.
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GREGORY, SEAN M., and JAMES S. QUINN. "Microsatellite isolation from four avian species comparing two isolation techniques." Molecular Ecology Notes 6, no. 1 (March 2006): 87–89. http://dx.doi.org/10.1111/j.1471-8286.2005.01148.x.

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Chen, Shaojie, Boris Schmidt, Stefano Bordignon, Fabrizio Bologna, Takahiko Nagase, Laura Perrotta, and K. R. Julian Chun. "Practical Techniques in Cryoballoon Ablation: How to Isolate Inferior Pulmonary Veins." Arrhythmia & Electrophysiology Review 7, no. 1 (2018): 11. http://dx.doi.org/10.15420/aer.2018;1;2.

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Catheter ablation is the most effective treatment option for patients suffering from symptomatic atrial fibrillation. Electrical isolation of the pulmonary veins is the procedural cornerstone. Point-by-point radiofrequency current energy ablation in combination with a 3D electro-anatomical mapping system is the established approach to ablation. In contrast, cryoballoon ablation uses a single-shot approach to facilitate pulmonary vein isolation. However, fixed cryoballoon diameters (28 mm or 23 mm) and non-balloon compliance can lead to technical difficulties in isolating variable pulmonary vein anatomies. This review focuses on key procedural aspects and illustrates practical techniques in cryoballoon pulmonary vein isolation to shorten the learning curve without compromising safety and efficacy. It has a special emphasis on inferior pulmonary veins.
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Poyai, A., E. Simoen, C. Claeys, R. Rooyackers, and G. Badenes. "Lifetime study in advanced isolation techniques." Materials Science in Semiconductor Processing 4, no. 1-3 (February 2001): 137–39. http://dx.doi.org/10.1016/s1369-8001(00)00165-7.

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Nyangoni, K., S. Balachandran, and I. Hodzovic. "National survey on lung isolation techniques." European Journal of Anaesthesiology 27 (June 2010): 249. http://dx.doi.org/10.1097/00003643-201006121-00803.

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Shu, Rui, Peipei Wang, Sigmund A. Gorski III, Benjamin Andow, Adwait Nadkarni, Luke Deshotels, Jason Gionta, William Enck, and Xiaohui Gu. "A Study of Security Isolation Techniques." ACM Computing Surveys 49, no. 3 (December 13, 2016): 1–37. http://dx.doi.org/10.1145/2988545.

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Dissertations / Theses on the topic "Isolation techniques"

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Cherubal, Sasikumar. "Fault isolation and diagnosis techniques for mixed-signal circuits." Diss., Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/15450.

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Zhang, Norman Tianshu. "Isolation of lactoferrin from bovine colostrum by chromatographic techniques." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0010/MQ59911.pdf.

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Meseguer, Amela Jordi. "Integration Techniques of Fault Detection and Isolation Using Interval Observers." Doctoral thesis, Universitat Politècnica de Catalunya, 2009. http://hdl.handle.net/10803/52812.

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An interval observer has been illustrated to be a suitable approach to detect and isolate faults affecting complex dynamical industrial systems. Concerning fault detection, interval observation is an appropriate passive robust strategy to generate an adaptive threshold to be used in residual evaluation when model uncertainty is located in parameters (interval model). In such approach, the observer gain is a key parameter since it determines the time evolution of the residual sensitivity to a fault and the minimum detectable fault. This thesis illustrates that the whole fault detection process is ruled by the dynamics of the fault residual sensitivity functions and by the time evolution of the adaptive threshold related to the interval observer. Besides, it must be taken into account that these two observer fault detection properties depend on the used observer gain. As a consequence, the observer gain becomes a tuning parameter which allows enhancing the observer fault detection performance while avoiding some drawbacks related to the analytical models, as the wrapping effect. In this thesis, the effect of the observer gain on fault detection and how this parameter can avoid some observer drawbacks (i.e. wrapping effect) are deeply analyzed. One of the results of this analysis is the determination of the minimum detectable fault function related to a given fault type. This function allows introducing a fault classification according to the fault detectability time evolution: permanently (strongly) detected, non-permanently (weakly) detected or just non-detected. In this fault detection part of this thesis, two examples have been used to illustrate the derived results: a mineral grinding-classification process and an industrial servo actuator. Concerning the interface between fault detection and fault isolation, this thesis shows that both modules can not be considered separately since the fault detection process has an important influence on the fault isolation result. This influence is not only due to the time evolution of the fault signals generated by the fault detection module but also to the fact that the fault residual sensitivity functions determines the faults which are affecting a given fault signal and the dynamics of this fault signal for each fault. This thesis illustrates this point suggesting that the interface between fault detection and fault isolation must consider a set of fault signals properties: binary property, sign property, fault residual sensitivity property, occurrence order property and occurrence time instant property. Moreover, as a result of the influence of the observer gain on the fault detection stage and on the fault residual sensitivity functions, this thesis demonstrates that the observer gain has also a key role in the fault isolation module which might allow enhancing its performance when this parameter is tuned properly (i.e. fault distinguishability may be increased). As a last point, this thesis analyzes the timed discrete-event nature of the fault signals generated by the fault detection module. As a consequence, it suggests using timed discrete-event models to model the fault isolation module. This thesis illustrates that this kind of models allow enhancing the fault isolation result. Moreover, as the monitored system is modelled using an interval observer, this thesis shows as this qualitative fault isolation model can be built up on the grounds of this system analytical model. Finally, the proposed fault isolation method is applied to detect and isolate faults of the Barcelona’s urban sewer system limnimeters. Keywords: Fault Detection, Fault Diagnosis, Robustness, Observers, Intervals, Discrete-event Systems.
En la presente tesis se demuestra que el uso de observadores intervalares para detectar y aislar fallos en sistemas dinámicos complejos constituye una estrategia apropiada. En la etapa de detección del fallo, dicha estrategia permite determinar el umbral adaptativo usado en la evaluación del residuo (robustez pasiva). Dicha metodología, responde a la consideración de modelos con parámetros inciertos (modelos intervalares). En dicho enfoque, la ganancia del observador es un parámetro clave que permite determinar la evolución temporal de la sensibilidad del residuo a un fallo y el mínimo fallo detectable para un tipo de fallo determinado. Esta tesis establece que todo el proceso de detección de fallos viene determinado por la dinámica de las funciones sensibilidad del residuo a los diferentes fallos considerados y por la evolución temporal del umbral adaptativo asociado al observador intervalar. Además, se debe tener en cuenta que estas dos propiedades del observador respecto la detección de fallos dependen de la ganancia del observador. En consecuencia, la ganancia del observador se convierte en el parámetro de diseño que permite mejorar las prestaciones de dicho modelo respecto la detección de fallos mientras que permite evitar algunos defectos asociados al uso de modelos intervalares, como el efecto wrapping. Uno de los resultados obtenidos es la determinación de la función fallo mínimo detectable para un tipo de fallo dado. Esta función permite introducir una clasificación de los fallos en función de la evolución temporal de su detectabilidad: fallos permanentemente detectados, fallos no permanentemente detectados y fallos no detectados. En la primera parte de la tesis centrada en la detección de fallos se utilizan dos ejemplos para ilustrar los resultados obtenidos: un proceso de trituración y separación de minerales y un servoactuador industrial. Respecto a la interfaz entre la etapa de detección de fallos y el proceso de aislamiento, esta tesis muestra que ambos módulos no pueden considerarse separadamente dado que el proceso de detección tiene una importante influencia en el resultado de la etapa de aislamiento. Esta influencia no es debida sólo a la evolución temporal de las señales de fallo generados por el módulo de detección sino también porque las funciones sensibilidad del residuo a los diferentes posibles fallos determinan los fallos que afectan a un determinado señal de fallo y la dinámica de éste para cada uno de los fallos. Esta tesis ilustra este punto sugiriendo que el interfaz entre detección y aislamiento del fallo debe considerar un conjunto de propiedades de dichos señales: propiedad binaria, propiedad del signo, propiedad de la sensibilidad del residuo a un fallo dado, propiedad del orden de aparición de las señales causados por los fallos y la propiedad del tiempo de aparición de estos. Además, como resultado de la influencia de la ganancia del observador en la etapa de detección y en las funciones sensibilidad asociadas a los residuos, esta tesis ilustra que la ganancia del observador tiene también un papel crucial en el módulo de aislamiento, el cual podría permitir mejorar el comportamiento de dicho módulo diseñando éste parámetro del observador de forma adecuada (Ej. Incrementar la distinción de los fallos para su mejor aislamiento). Como último punto, esta tesis analiza la naturaleza temporal de eventos discretos asociada a las señales de fallo generados por el módulo de detección. A consecuencia, se sugiere usar modelos de eventos discretos temporales para modelizar el módulo de aislamiento del fallo. Esta tesis muestra que este tipo de modelos permite mejorar el resultado de aislamiento del fallo. Además, dado que el sistema monitorizado es modelado usando un observador intervalar, esta tesis muestra como este modelo cualitativo de aislamiento puede ser construido usando dicho modelo analítico del sistema. Finalmente, el método propuesto de aislamiento del fallo es aplicado para detectar y aislar fallos en los limnimetros del sistema de alcantarillado de Barcelona. Palabras clave: Detección de Fallos, Diagnosis de Fallos, Robusteza, Observadores, Intervalos, Sistemas de Eventos Discretos.
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Meiklejohn, Bruce Ian 1959. "ISOLATION AND SEPARATION OF HUMAN CYTOKERATINS USING VARIOUS CHROMATOGRAPHIC TECHNIQUES." Thesis, The University of Arizona, 1987. http://hdl.handle.net/10150/276475.

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The cytokeratins from various human tissue were isolated using chromatographic techniques. The cytokeratins were first extracted from crude tissue using high and low salt buffers. It was necessary to use a denaturing agent such as urea to solubilize the resulting cytokeratin pellet. Imidazole also seemed to help solubilize the pellet and a reducing agent such as 2-Mercaptoethanol was not needed as previously believed. The acidic cytokeratins were separated from the neutral-basic cytokeratins using a DEAE ion-exchange column. The acidic cytokeratin fraction was further separated on a moderately polar reverse phase column with an acetonitrile gradient to eluted the proteins. Tetramethylammonium tetrafluoroborate was added to the mobile phase to react with any unreacted silanol groups on the stationary phase and trifluoroacetic acid was added to ion pair with the protein. The peaks were analyzed for purity using two dimensional electrophoresis and monoclonal antibodies that recognize the cytokeratins.
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Hwas, Abdulhamed. "Model-based fault detection and isolation techniques for wind turbines." Thesis, University of Strathclyde, 2013. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=25512.

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The main objective of the work of this thesis is to design model-based fault detection and isolation techniques for a large-scale wind turbine. A mathematical model of the 5MW wind turbine was developed; the model was sufficiently detailed to be used for simulation purposes. The stages of the modelling procedure were to divide the overall wind turbine system into appropriate sub-models suitable for separate modelling. Each sub-model was then presented and combined in order to obtain a completed non-linear wind turbine model. Two methods are proposed to calculate the gains of a proportional-integral (PI) pitch angle controller for the non-linear model: the first method is analytical and the second method is based on simulation. The simulation results demonstrated good performance for both proposed PI schemes. In order to design an electrical torque controller, an internal model controlbased PI controller was used to find the gains of the current and of the torque controller; good static and dynamic performance were achieved. In this thesis, a quantitative model-based method for early detection and diagnosis of wind turbine faults is proposed. The method is based on designing an observer by using a linear model of the system; the observer innovation signal is monitored to detect faults. The fault detection system was designed and optimised to be maximally sensitive to system faults and minimally sensitive to system disturbances and noise; a multi-objective optimisation method was utilised to address this dual problem. Simulation results are presented to demonstrate the performance of the proposed method. Next, a non-linear observer-based scheme for early fault detection and isolation of wind turbines was developed. The method is based on designing a nonlinear observer using a non-linear model of the wind turbine. The state-dependent differential Riccati equation was used to design a non-linear observer. The comparison of system outputs with non-linear observer estimation confirmed good performance of the non-linear observer. Based on the non-linear observer, a residual generator for monitoring wind turbine model was formulated. Simulation results illustrated that the proposed method is a robust method in detecting and isolating a single fault or multi-faults in wind turbine sensors.
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Moulin, Laurent. "Applications des techniques de contrôle actif à divers problèmes de bruit dans le bâtiment." Ecully, Ecole centrale de Lyon, 1995. http://www.theses.fr/1995ECDL0017.

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Notre étude se propose d'appliquer les techniques actives à deux problèmes de bruit dans le bâtiment. La première partie de la thèse concerne les investigations expérimentales menées afin de minimiser, à l'aide d'un système actif multivoies, le rayonnement acoustique de muscles supérieurs dans un conduit rectangulaire à parois rigides. La deuxième partie relate les expériences réalisées afin d'améliorer l'isolation passive d'un double vitrage.
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Chin, Eu-Jeen. "High performance vibration isolation techniques for the AIGO gravitational wave detector." University of Western Australia. School of Physics, 2007. http://theses.library.uwa.edu.au/adt-WU2007.0159.

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[Truncated abstract] Interferometric gravitational wave detectors are being built around the world with continually improving measurement sensitivities. Noise levels from sources that are intrinsic to these detectors must be reduced to a level below the gravita- tional wave signal. Seismic noise in the low frequency range, which is within the gravitational wave detection bandwidth, is a concern for earth-based detectors. This thesis presents research and development of a high performance vibration isolation system that is designed to attenuate seismic noise. The final design will be used as part of a fully working interferometer at the Australian International Gravitational Observatory (AIGO). Pendulums and springs are conventionally used for the horizontal and vertical vibration isolation components respectively. A complete system comprises of a cascade of these components, each stage dramatically improving the level of isola- tion. The residual motion at the test mass level is thus reduced but is dominated by the normal mode resonances of the chain. A simple and effective method to reduce residual motion further is to add ultra-low frequency pre-isolation stages which suspend the chain. The Roberts Linkage is a relatively new and simple geometrical structure that is implemented in the pre-isolation stages. Here we present experimental results of improving isolation based on mathematical mod- elling. The attenuation of seismic noise in the vertical direction is almost as important as that in the horizontal direction, due to cross-coupling between the two planes. To help improve the vertical performance a lightweight Euler spring that stores no static energy was implemented into the AIGO suspension system. ... Theoretical and experimental results are presented and discussed. Currently the AIGO laboratory consists of two 80 m length arms. They are aligned along the east and south directions. One of AIGO's top priorities is the installation of two complete vibration isolators in the east arm to form a Fabry-Perot cavity. Assembling two suspension systems will enable more accurate performance measurements of the tuned isolators. This would significantly reduce the measurement noise floor as well as eliminate the seismic noise spectrum due to referencing with the ground motion. The processes involved in preparing such a task is presented, including clean room preparation, tuning of each isolator stage, and local control schematics and methods. The status of the AIGO site is also presented.
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Ingram, David. "An Evaluation of Harmonic Isolation Techniques for Three Phase Active Filtering." Thesis, University of Canterbury. Electrical and Computer Engineering, 1998. http://hdl.handle.net/10092/1260.

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Recent advances in power electronics have lead to the wide spread adoption of advanced power supplies and energy efficient devices. This has lead to increased levels of harmonic currents in power systems, degrading the performance of electrical machinery and interfering with telecommunication services. Active filters provide a solution to these problems by compensating for the distorted currents drawn by non-linear loads. Optimal methods for controlling these active filters have been determined by computer simulation and experimental implementation. Methods used for isolating the harmonic content of an unbalanced three phase load current were compared by computer simulations. A technique based on the Fast Fourier Transform (FFT) was developed as part of this work and shown to perform favourably. Notch Filtering, Sinusoidal Subtraction, Instantaneous Reactive Power Theory, Synchronous Reference Frame and Fast Fourier Transform methods were simulated. The methods shown to be suitable for compensation of three phase unbalanced loads were implemented in a Digital Signal Processor to evaluate true performance. These methods were Notch Filtering, Sinusoidal Subtraction, Fast Fourier Transform, and a High Pass Filter based method. A completely digital hysteresis current controller for a three phase active filter inverter has been developed and implemented with a Field Programmable Gate Array. This controller interfaces directly to a digital signal processor and is resistant to electromagnetic interference. Results from the experimental hardware verified that the active filter model used for simulation is accurate, and may be used for further development of harmonic isolation methods. A technique using notch filtering gives the best performance for steady loads, with the FFT based technique giving the most flexible operation for a range of load current characteristics. Novel use of the FFT based harmonic isolation technique allows selective cancellation of individual harmonics, with particular application to multiple shunt filters connected in parallel.
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Walker, Mathew William. "Improved techniques for isolation of pure cellular organelles with magnetic ferrofluid." Thesis, Cardiff University, 2015. http://orca.cf.ac.uk/70620/.

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Lysosomes are essential cellular organelles known to be the main site for the breakdown and recycling of endocytosed macromolecules within cells. However, our knowledge of lysosomal function has changed considerably over the last decade with the lysosome now being a recognized Ca2+ signaling organelle with additional roles in plasma membrane repair, clearance of defective organelles and mediating cell death as well as established roles in clearing infection. Our ability to study these unique organelles has however been stymied by a dearth of good techniques for the purification of functional lysosomes not contaminated by other organelles.
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Helmy, Ahmed. "Characterization of substrate noise coupling, its impacts and remedies in RF and mixed-signal ICs." Columbus, Ohio : Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1160150387.

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Books on the topic "Isolation techniques"

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Matrix-isolation techniques: A practical approach. Oxford: Oxford University Press, 1998.

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1937-, Hostettmann M., and Marston A. 1953-, eds. Preparative chromatography techniques: Applications in natural product isolation. Berlin: Springer-Verlag, 1986.

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1953-, Marston A., and Hostettmann M. 1937-, eds. Preparative chromatography techniques: Applications in natural product isolation. 2nd ed. Berlin: Springer, 1998.

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Kates, Morris. Techniques of lipidology: Isolation, analysis, and identification of lipids. 2nd ed. Amsterdam: Elsevier, 1986.

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Delves, Peter J. Antibody production: Essential techniques. Chichester: J. Wiley & Sons, 1997.

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Rosenberg, Ian M. Protein analysis and purification: Benchtop techniques. Boston: Birkhäuser, 1996.

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Sampson, William C. Recovery of latent fingerprint evidence from human skin: Causation, isolation and processing techniques. S.l: KLS Forensics, 1997.

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Forbes, Betty A. Laboratory detection and identification of mycobacteria: Approved guideline. Wayne, Pa: Clinical and Laboratory Standards Institute, 2008.

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E, Deal Terrence, ed. Becoming a teacher leader: From isolation to collaboration. Thousand Oaks, Calif: Corwin Press, 1994.

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Pendergast, Karl J. Use of passive reaction wheel jitter isolation system to meet the advance X-ray Astrophysics Facility Imaging performance. [Washington, DC: National Aeronautics and Space Administration, 1998.

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Book chapters on the topic "Isolation techniques"

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Sarker, Satyajit D., and Lutfun Nahar. "Hyphenated Techniques." In Natural Products Isolation, 233–67. Totowa, NJ: Humana Press, 2006. http://dx.doi.org/10.1385/1-59259-955-9:233.

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Ranganath, Namrata, and Kavitha Lakshman. "Lung Isolation Techniques." In Clinical Thoracic Anesthesia, 121–37. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-0746-5_10.

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Ding, Steven X. "Fault Isolation Schemes." In Model-Based Fault Diagnosis Techniques, 405–40. London: Springer London, 2013. http://dx.doi.org/10.1007/978-1-4471-4799-2_13.

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Gartner, Suzanne, and Mikulas Popovic. "Virus Isolation and Production." In Techniques in HIV Research, 53–70. London: Palgrave Macmillan UK, 1990. http://dx.doi.org/10.1007/978-1-349-11888-5_3.

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Nishiguchi, Michele K., Phaedra Doukakis, Mary Egan, David Kizirian, Aloysius Phillips, Lorenzo Prendini, Howard C. Rosenbaum, et al. "DNA Isolation Procedures." In Techniques in Molecular Systematics and Evolution, 249–87. Basel: Birkhäuser Basel, 2002. http://dx.doi.org/10.1007/978-3-0348-8125-8_12.

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Surzycki, Stefan. "Isolation of Plasmid DNA." In Basic Techniques in Molecular Biology, 101–18. Berlin, Heidelberg: Springer Berlin Heidelberg, 2000. http://dx.doi.org/10.1007/978-3-642-56968-5_5.

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Surzycki, Stefan. "Isolation of PolyA+ RNA." In Basic Techniques in Molecular Biology, 145–62. Berlin, Heidelberg: Springer Berlin Heidelberg, 2000. http://dx.doi.org/10.1007/978-3-642-56968-5_7.

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Borkar, S. G. "Isolation of Bacterial Metabolites." In Laboratory Techniques in Plant Bacteriology, 151–63. Boca Raton : Taylor & Francis, 2017.: CRC Press, 2017. http://dx.doi.org/10.1201/9781315206882-23.

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Borkar, S. G. "Isolation of Antibacterial Compound." In Laboratory Techniques in Plant Bacteriology, 285–91. Boca Raton : Taylor & Francis, 2017.: CRC Press, 2017. http://dx.doi.org/10.1201/9781315206882-39.

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Borkar, S. G. "Isolation of Antibacterial Microbes." In Laboratory Techniques in Plant Bacteriology, 293–95. Boca Raton : Taylor & Francis, 2017.: CRC Press, 2017. http://dx.doi.org/10.1201/9781315206882-40.

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Conference papers on the topic "Isolation techniques"

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Beadle, Edward R. "Analog signal isolation techniques." In Accelerator instrumentation fourth annual workshop. AIP, 1992. http://dx.doi.org/10.1063/1.44331.

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Gopu, Deepa, George Ontko, Chin Phan, Kartik Ramanujachar, Scott Wills, and Alan Hales. "Precise Fail Site Isolation Using a Combination of Global, Software and Tester Based Isolation Techniques." In ISTFA 2004. ASM International, 2004. http://dx.doi.org/10.31399/asm.cp.istfa2004p0172.

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Abstract Precise fail site isolation plays a very important role today in the world of semiconductors. Its importance increases more, as the devices are of cutting edge technology with increasing complexity and decreasing dimensions. Global fail site isolations techniques (like XIVA, Photo Emission, FMI etc) and tester based techniques (using automatic test equipment, Fastscan etc) alone, are no longer sufficient and may not be successful. Long net lists and large fail sites isolated by these methods pose problems for physical failure analysis. Planarity of these large areas during parallel lap and inspection times using the SEM is difficult and tedious, thus leading to long cycle times and low resolution rates. There exists a need for precise fail site isolation. In many cases, no single technique can be used to narrow down a fail site significantly. Instead a combination of different techniques must be used. In this paper we present a case study, where a combination of complimentary techniques are used to successfully isolate a fail area of more than 1300 microns in length to less than 100 microns on a single failing net.
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Newman, W. J., and P. D. Saunders. "Isolation Techniques for Subsea Gas Pipelines." In Offshore Europe. Society of Petroleum Engineers, 1991. http://dx.doi.org/10.2118/23067-ms.

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Lin, H. N., C. H. Wang, K. L. Lin, W. S. Yang, and C. J. Chen. "The Techniques for Short Failure Isolation on Advanced Technology." In ISTFA 2006. ASM International, 2006. http://dx.doi.org/10.31399/asm.cp.istfa2006p0444.

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Abstract Optical beam induced resistance change (OBIRCH) is one popular technique for isolating electrical shorts in process development test structures for 130nm and 110nm device technologies. However, OBIRCH inspection on 90nm technology is not always successful: since the OBIRCH signals of samples are very weak, or even comparable to noise. To overcome this, two alternative and complementary methods for isolating the failure have been developed. The first method is to calculate the coarse position of the defect directly from electrical resistance measurements. The second method is to enhance the OBIRCH signal using FIB circuit modification within the test structure. These methods can help locate defect at this structure by using electrical analysis only or enhancing the OBIRCH signal. The first method is an easy and quick method for short failure isolation, while the second can exactly locate the position of failure if the first method does not reveal a surface defect.
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Chen, Y., P. Lai, and Q. Shi. "Advanced fault isolation techniques for 3D packaging." In 2016 IEEE 23rd International Symposium on the Physical and Failure Analysis of Integrated Circuits (IPFA). IEEE, 2016. http://dx.doi.org/10.1109/ipfa.2016.7564284.

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WOLTING, DUANE. "Multivariate fault detection and isolation in propulsion research." In Sensor and Measurements Techniques for Aeronautical Applications. Reston, Virigina: American Institute of Aeronautics and Astronautics, 1988. http://dx.doi.org/10.2514/6.1988-4682.

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Adusumilli, Siva P., Steven M. Shank, John Ellis-Monaghan, Chu-hsiang Teng, Mark D. Levy, and Anthony K. Stamper. "STI techniques for isolation of RF-SOI devices." In 2017 IEEE SOI-3D-Subthreshold Microelectronics Technology Unified Conference (S3S). IEEE, 2017. http://dx.doi.org/10.1109/s3s.2017.8309255.

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Bakale, Ravindra S., A. B. Nandgaonkar, and S. B. Deosarkar. "Isolation Enhancement Techniques for MIMO Antenna: A Review." In 2020 International Conference on Smart Innovations in Design, Environment, Management, Planning and Computing (ICSIDEMPC). IEEE, 2020. http://dx.doi.org/10.1109/icsidempc49020.2020.9299655.

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Arnold, Frank S. "Laser Failure Isolation Techniques Demonstrated On Test Structures." In ISTFA 2008. ASM International, 2008. http://dx.doi.org/10.31399/asm.cp.istfa2008p0354.

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Abstract To be better prepared to use laser based failure isolation techniques on field failures of complex integrated circuits, simple test structures without any failures can be used to study Optical Beam Induced Resistance Change (OBIRCH) results. In this article, four case studies are presented on the following test structures: metal strap, contact string, VIA string, and comb test structure. Several experiments were done to investigate why an OBIRCH image was seen in certain areas of a VIA string and not in others. One experiment showed the OBRICH variation was not related to the cooling and heating effects of the topology, or laser beam focusing. A 4 point probe resistance measurement and cross-sectional views correlated with the OBIRCH results and proved OBIRCH was able to detect a variation in VIA fabrication.
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Carbone, Ralph A., and David J. Roche. "SMT Ceramic Capacitor Failure Mechanisms, Isolation Tools, Techniques and Analysis Methods." In ISTFA 2000. ASM International, 2000. http://dx.doi.org/10.31399/asm.cp.istfa2000p0347.

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Abstract Surface Mount Technology (SMT) ceramic capacitors are widely used on virtually every type of electronic product. In computer systems, SMT capacitors populate the majority of electronic parts found on each Printed Circuit Assembly (PCA) within the product, primarily as bypass or coupling devices between power and ground. As such, the opportunity for failure is substantially higher than with other commonly used active or passive components. Additionally, the relatively small ceramic bodies are prone to mechanical damage. Their proportionately high numbers, sensitivity to mechanical stress and difficulty in isolating to a specific failing device on the PCA (since many of these parts are in parallel with many other identical capacitors) all combine to make the successful isolation and analysis of the root cause of failure particularly difficult for the failure analyst. Often, the cause of failure is misdiagnosed, or the evidence is compromised by the methods used to perform the analysis. This paper will discuss the common failure mechanisms associated with SMT ceramic capacitors, as well as some innovative non-destructive isolation tools and techniques, including C-Mode Scanning Acoustic Microscopy (C-SAM), Infrared thermography (IR) and Micro-Focus X-ray analysis. Several case studies will be cited which demonstrate each of the mechanisms and methods. Additionally, the processes used to properly analyze these defects will be examined.
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Reports on the topic "Isolation techniques"

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Fajardo, Mario E., Michel Macler, and Simon Tam. Progress Towards the Production of Cryosolid HEDM Samples by Laser Ablation and Matrix Isolation Techniques. Fort Belvoir, VA: Defense Technical Information Center, February 1998. http://dx.doi.org/10.21236/ada397945.

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Zimmerman, D. A., and D. P. Gallegos. A comparison of geostatistically based inverse techniques for use in performance assessment analysis at the Waste Isolation Pilot Plant Site: Results from Test Case No. 1. Office of Scientific and Technical Information (OSTI), October 1993. http://dx.doi.org/10.2172/10134361.

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Hart, Carl. Vibration survey of Room 47 with a laser doppler vibrometer : Main Laboratory Basement, U.S. Army ERDC-CRREL. Engineer Research and Development Center (U.S.), November 2020. http://dx.doi.org/10.21079/11681/38919.

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Plans are underway to create an acousto-optic laboratory on the campus of the Cold Regions Research and Engineering Laboratory. For this purpose, existing space in the basement of the Main Laboratory will be renovated. Demanding measurement techniques, such as interferometry, require a sufficiently quiet vibration environment (i.e., low vibration levels). As such, characterization of existing vibration conditions is necessary to determine vibration isolation requirements so that highly sensitive measurement activities are feasible. To this end, existing vibro-acoustic conditions were briefly surveyed in Room 47, a part of the future laboratory. The survey measured ambient noise and ambient vertical floor vibrations. The ambient vibration environment was characterized according to generic velocity criteria (VC), which are one-third octave band vibration limits. At the time of the survey, the ambient vibration environment fell under a VC-A designation, where the tolerance limit is 2000 μin/s across all one-third octave bands. Under this condition, highly sensitive measurement activities are feasible on a vibration-isolated working surface. The conclusion of this report provides isolation efficiency requirements that satisfy VC-E limits (125 μin/s), which are necessary for interferometric measurements.
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Krumhansl, J. L. Waste Isolation Pilot Plant brine field pH measurements: Technique and interpretation. Office of Scientific and Technical Information (OSTI), June 1989. http://dx.doi.org/10.2172/6110162.

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