Relevant bibliographies by topics / Saw-tooth pattern

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Academic literature on the topic 'Saw-tooth pattern'

Author: Grafiati
Published: 4 June 2025
Last updated: 15 July 2025

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Journal articles on the topic "Saw-tooth pattern"

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Schiffman, Philip L. "A “Saw-Tooth” Pattern in Parkinson's Disease." Chest 87, no. 1 (1985): 124–26. http://dx.doi.org/10.1378/chest.87.1.124.

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Vincken, W., and M. G. Costo. "“Saw-tooth” Pattern in the Flow-volume Loop." Chest 88, no. 3 (1985): 480. http://dx.doi.org/10.1378/chest.88.3.480-a.

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Schiffman, Philip L. "“Saw-tooth” Pattern in the Flow-volume Loop." Chest 88, no. 3 (1985): 480–81. http://dx.doi.org/10.1378/chest.88.3.480-b.

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Babu, Akhila. "Patient-ventilator interaction: Unusual ventilator graphics and management using Positive End Expiratory Pressure – A case report." Indian Journal of Respiratory Care 03, no. 02 (2022): 509–11. http://dx.doi.org/10.5005/ijrc-3-1-509.

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Approximately 25% of patients receiving mechanical ventilation have significant patient ventilator asynchrony which is associated with prolonged duration of mechanical ventilation. Here we report an unusual presentation of ventilator graphics “saw tooth” appearance in both pressure-time and flow-time graphs. An increase in the applied PEEP level resolved the saw tooth pattern in the graphics. The possible explanation for the graphics displayed is heart-lung interaction which is cardiogenic oscillation. If this is true, then this pattern can be used as a clinical tool to apply lung inflation ma
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Rendleman, Neal, and Stephen F. Quinn. "The answer is blowing in the wind: a pedunculated tumour with saw tooth flow-volume loop." Journal of Laryngology & Otology 112, no. 10 (1998): 973–75. http://dx.doi.org/10.1017/s0022215100142239.

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AbstractObstructing tumours of the upper airways have been demonstrated to alter the flow volume loop of pulmonary function testing. These alterations could be clues to the nature and location of the obstruction. This report describes a case of a pedunculated squamous cell carcinoma arising in the pharynx whose flow volume loop showed a saw tooth pattern which reflected the location and structure of the tumour.
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Elangovan, B., Tucha Kedir, Rabira GeletaIbsa, and Yonas Biruku Addis. "A Novel Steganographic Approach for Embedding Secret Text in Multiple Images with Saw Tooth Pattern." International Journal of Advanced Engineering Research and Science 6, no. 6 (2019): 508–11. http://dx.doi.org/10.22161/ijaers.6.6.53.

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Zhang, Hanjie, and Peter Kotanko. "Artificial Intelligence-Driven System to Automatically Identify Arterial Oxygen Saturation Saw-Tooth Pattern in Hemodialysis." Journal of the American Society of Nephrology 32, no. 10S (2021): 309. http://dx.doi.org/10.1681/asn.20213210s1309b.

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Nagai, A., H. Matsumiya, M. Hayashi, T. Kanemura, S. Yasui, and K. Konno. "Lesions of the arytenoid region in a patient with exertional dyspnoea." European Respiratory Journal 6, no. 7 (1993): 1065–66. http://dx.doi.org/10.1183/09031936.93.06071065.

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A 63 year old woman presented with a 3 year history of exertional dyspnoea. Spirometry suggested extrathoracic airway obstruction (decreased inspiratory flow and saw-tooth pattern of flow-volume curves), and bronchoscopy revealed structural lesions and a trembling motion in the arytenoid region, causing upper airway obstruction on forced respiratory efforts. As there were no abnormal findings other than the lesions, the exertional dyspnoea was probably caused by impaired movement of the arytenoid region.
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Neukirch, Françoise, Emmanuel Weitzenblum, Renata Liard, et al. "Frequency and Correlates of the Saw-Tooth Pattern of Flow-Volume Curves in an Epidemiological Survey." Chest 101, no. 2 (1992): 425–31. http://dx.doi.org/10.1378/chest.101.2.425.

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Lee, Jae-Yeap, Hu-Jong Lee, Myung-Hwa Jung, Sung-Ik Lee, Eun-Mi Choi, and W. N. Kang. "Saw-tooth pattern from flux jumps observed by high resolution M-H curves in MgB2 thin films." Journal of Applied Physics 108, no. 3 (2010): 033909. http://dx.doi.org/10.1063/1.3457674.

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Book chapters on the topic "Saw-tooth pattern"

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Fotinakis Vassilis P and Dickinson Chris M. "Reading with Hand Magnifiers." In Studies in Health Technology and Informatics. IOS Press, 1994. https://doi.org/10.3233/978-1-60750-855-7-259.

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Nine normally-sighted subjects read aloud text using two hand magnifiers of different power at two different eye-to-lens distances for each magnifier, in an attempt to assess the limitations that magnifiers impose on the reader. The reading speed of the subjects was measured and their reading eye movements were recorded on paper by means of Infra-Red Oculography. The data showed that reading speed declined significantly with increasing magnification, while the effect of a shorter eye-to-lens distance was not statistically significant. It is argued that increasing magnification reduces the number of letters conceived by the reader in each fixation during reading. In contrast to the “staircase” eye movement pattern observed in normal reading, a “saw-tooth” pattern was observed when the magnifiers were used, featuring smooth leftward eye movements in the place of fixation pauses. The results imply that despite being essential for the visually-impaired, magnification will limit their reading speed, while the adoption of a “saw-tooth” eye movement pattern may not be beneficial for aged low vision patients, as its components (saccades and smooth eye movements) are adversely affected by age.
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Maurer, Tilman, Christine Lemes, and Karl-Heinz Kuck. "Atrial flutter: management." In ESC CardioMed. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780198784906.003.0519.

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Atrial flutter (AFL) is the most common macroreentry tachycardia in patients with and without structural heart disease. In the majority of cases, the arrhythmia is associated with a pre-existing comorbidity such as heart failure or lung disease. AFL refers to an electrocardiogram (ECG) pattern of a regular tachycardia with an atrial rate of more than 240 beats per minute and a lack of an isoelectric baseline between deflections. The most frequent form is termed ‘common’ or ‘typical’ if biphasic waves are present in the inferior leads, resembling a ‘saw-tooth’ pattern. Common AFL is diagnosed in 90% of cases and its mechanism is a macroreentry within the right atrium involving the cavotricuspid isthmus. ‘Atypical’ AFL refers to any ECG flutter morphology different from the common type. While the surface ECG provides a widely available and non-invasive diagnostic tool, a definite diagnosis of the underlying tachycardia mechanism can only be established by invasive electrophysiological testing. Acute management of AFL includes measures for rate control by pharmacological treatment or rhythm control by antiarrhythmic drugs or electrical cardioversion. For long-term treatment, catheter ablation offers a safe, effective, and curative approach for common flutter and is also a treatment option for atypical AFL. Anticoagulation should be initiated according to risk stratification based on the CHA<sub>2</sub>DS<sub>2</sub>-VASc score to prevent thromboembolic complications. This chapter provides a detailed overview on the pathophysiology and electrocardiographic characteristics of AFL and discusses the clinical management of the arrhythmia.
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Conference papers on the topic "Saw-tooth pattern"

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Zhang, Xueping, Shenfeng Wu, and C. Richard Liu. "The Periodical Fluctuation of Residual Stress in Hard Turned Surface and its Relationship With Chip Formation." In ASME 2011 International Manufacturing Science and Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/msec2011-50197.

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To evaluate the residual stress distribution along cutting direction in hard turning process, an explicit dynamic thermo-mechanical orthogonal Finite Element Model (FEM) is developed to consider the correlation between residual stress distribution and chip morphology and plough effect by cutting edge. The FEM adopts Johnson-Cook (J-C) model to describe work material property, the critical equivalent plastic strain criterion to simulate chip separation behavior, and the revised coulomb’s law to capture the friction pattern between the tool and chip interface. The FEM is validated by comparing t
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Osiński, Marek, William Streifer, and Amos Hardy. "Coupled-Mode Analysis of Chirped Phased-Array Semiconductor Lasers." In Semiconductor Lasers. Optica Publishing Group, 1987. http://dx.doi.org/10.1364/sla.1987.tha6.

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Many applications of high-power phased-array diode lasers require the laser emission to have a single-lobe, narrow far-field pattern. Only the lowest-order supermode has this property, hence all higher-order array modes should be suppressed. Considerable attention has been given to phased arrays with variable channel width [1] or nonuniform spacing [2]. Such chirped arrays have been considered in search of a design that might result in stable, lowest-order supermode operation. We have recently reported results of coupled-mode analysis for uniform arrays as well as chirped arrays with linear, t
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Wang, Li H. "Effect of Hydrogenated Water on Fatigue Crack Growth for Austenitic Stainless Steel in Simulated BWR Water Environment." In ASME/JSME 2004 Pressure Vessels and Piping Conference. ASMEDC, 2004. http://dx.doi.org/10.1115/pvp2004-2681.

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Fatigue crack growth rates (FCGR) of sensitized austenitic stainless steel (SS) were measured in simulated BWR water at 288 °C using compact tension specimens under different cyclic loading modes, including saw-tooth, trapezoidal and constant loading pattern. This study tested sensitized SS in normal water chemistry (NWC) and hydrogen water chemistry (HWC) respectively, and attempted to clarify the effect of low electrochemical corrosion potential on the FCGR of sensitized stainless steel. Significant environment effects on FCGR of sensitized stainless steel were observed in both water chemist
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Ohara, T., and A. Majumdar. "Ratcheting Electrophoresis Microchip (REM) for Programmable Transport and Separation of Macromolecules." In ASME 2001 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/imece2001/mems-23888.

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Abstract This paper introduces the concept of a ratcheting electrophoresis microchip (REM), a microfluidic device for electrophoretic separation of macromolecules such as DNA and proteins in aqueous solution using low applied voltages (∼ 1 V). The device consists of several thousands of parallel linear electrodes with a constant pitch of about 10 μm. A spatial saw-tooth like potential distribution generated by the electrode array causes local electrophoretic migration of charged molecules between adjacent electrodes. By cycling the potential distribution in a certain pattern, the spatio-tempor
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Wang, Feng, and Luca di Mare. "Analysis of Transonic Bladerows With Non-Uniform Geometry Using Spectral Method." In ASME Turbo Expo 2020: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/gt2020-15161.

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Abstract Turbomachinery blade rows can have non-uniform geometries due to design intent, manufacture errors or wear. When predictions are sought for the effect of such non-uniformities, it is generally the case that whole assembly calculations are needed. A spectral method is used in this paper to approximate the flow fields of the whole assembly but with significantly less computation cost. The method projects the flow perturbations due to the geometry non-uniformity in an assembly in Fourier space, and only one passage is required to compute the flow perturbations corresponding to a certain
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Yi, Michael, Dawson Ramos, Pradeepkumar Ashok, Taylor Thetford, Spencer Bohlander, and Michael Behounek. "Time-Series Data Augmentation Techniques for Improving Automated Drilling Dysfunction Classifiers." In SPE/IADC International Drilling Conference and Exhibition. SPE, 2021. http://dx.doi.org/10.2118/204063-ms.

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Abstract Detecting drilling dysfunctions from surface data is not always easy as downhole vibrations tend to get damped before they reach surface sensors. Building machine learning models to recognize patterns in the surface data requires vibration signals captured by downhole sensors for training purposes. Such datasets are not widely available and therefore a methodology to expand these datasets is highly desirable. This work explores ways to utilize data augmentation to artificially diversify and increase datasets to build better models. Stick-slip (including full-stick), bit bounce, whirl,
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Coder, David, David Walker, Dennis McKelvey, and Steven Enzinger. "Drag Reduction with Riblets on Rowing Shells." In SNAME 22nd American Towing Tank Conference. SNAME, 1989. http://dx.doi.org/10.5957/attc-1989-048.

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An experiment is described in which riblets, which are longitudinal surface groves that have been shown by NASA to reduce turbulent flow skin friction on flat plates by much as 8 percent, are used to attempt to reduce the overall vehicle drag of rowing shells. Two single rowing shells, borrowed from the USNA rowing team and ballasted (with the outriggers removed) to represent a 200 lbf rower, were attached to the drag balance of the carriage of the USNA tow tank and towed at steady velocities from 4 to 20 ft/sec in 2 ft/sec increments. The attachment mechanism allowed the shells to move freely
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Darabi, J., and H. Wang. "Development of an Electrohydrodynamic Injection Micropump for Cryogenic Cooling." In ASME 2003 International Mechanical Engineering Congress and Exposition. ASMEDC, 2003. http://dx.doi.org/10.1115/imece2003-55247.

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Cryogenic cooling has become a widely adopted technique to improve the performance of electronics and sensors. A potential application of an electrohydrodynamic (EHD) pumping system is its use in pumping fluids in cryogenic cooling systems. In this paper we present the results of a theoretical/experimental investigation to study the feasibility of using an EHD injection micropump for pumping liquid nitrogen. First, the mechanisms of charge transport and ionization phenomenon in cryogenic liquids are discussed. Next, the design and fabrication of an EHD injection micropump that employs an array
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