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Journal articles on the topic 'AVA analysis'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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1

Lelgemann, H., and D. Klaeschen. "AVA analysis in the eastern Mediterranean." Physics and Chemistry of the Earth, Part A: Solid Earth and Geodesy 24, no. 5 (1999): 467–74. http://dx.doi.org/10.1016/s1464-1895(99)00078-2.

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Skopintseva, Lyubov, and Alexey Stovas. "Overburden dependent AVA inversion." GEOPHYSICS 75, no. 2 (2010): C15—C23. http://dx.doi.org/10.1190/1.3332529.

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Amplitude-variation-with-offset (AVO) analysis is strongly dependent on interpretation of the estimated traveltime parameters. In practice, we can estimate two or three traveltime parameters that require interpretation within the families of two- or three-parameter velocity models, respectively. Increasing the number of model parameters improves the quality of overburden description and reduces errors in AVO analysis. We have analyzed the effect of two- and three-parameter velocity model interpretation for the overburden on AVO data and have developed error estimates in the reservoir parameter

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Adriansyah and George A. McMechan. "AVA analysis and interpretation of a carbonate reservoir: northwest Java basin, Indonesia." GEOPHYSICS 66, no. 3 (2001): 744–54. http://dx.doi.org/10.1190/1.1444964.

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A detailed analysis is performed of amplitude variation with angle (AVA) observations in six common‐midpoint gathers with reflection points that are over and beside carbonate reefs in the Parigi Formation in the northwest Java basin. Both empirical analysis and full‐wavefield modeling of the AVA data suggest that the presence of gas affects AVA by reducing the bulk density of the reservoir, decreasing of the overburden [Formula: see text] ratio and by local attenuation caused by gas sieving through the overlying sediments. The slopes of AVA curves for reflections from the top of the Parigi are

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4

Zhou, Y., and J. Liu. "AVA: visual analysis of gene expression microarray data." Bioinformatics 19, no. 2 (2003): 293–94. http://dx.doi.org/10.1093/bioinformatics/19.2.293.

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Subrahmanian, V. S., and Diego Reforgiato. "AVA: Adjective-Verb-Adverb Combinations for Sentiment Analysis." IEEE Intelligent Systems 23, no. 4 (2008): 43–50. http://dx.doi.org/10.1109/mis.2008.57.

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6

Gardner, Gerald H. F., and Anat Canning. "AVA analysis after velocity-independent DMO and imaging." GEOPHYSICS 63, no. 2 (1998): 686–91. http://dx.doi.org/10.1190/1.1444368.

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A common midpoint (CMP) gather usually provides amplitude variation with offset (AVO) information by displaying the reflectivity as the peak amplitude of symmetrical deconvolved wavelets. This puts a reflection coefficient R at every offset h, giving a function R(h). But how do we link h with the angle of incidence, θ, to get the reflectivity function, R(θ)? This is necessary for amplitude versus angle-of-incidence (AVA) analysis. One purpose of this paper is to derive formulas for this linkage after velocity-independent dip-moveout (DMO), done by migrating radial sections, and prestack zero-o

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Manaf, Muhammad. "Productive Lithology Discrimination in Structurally Complex Area by Means of AVO/AVA Synthetics and Petrophysical well log Analysis, A Case Study from Khipro Block, Southern Indus Basin, Pakistan." International Journal of Engineering Works (ISSN: 2409-2770) 06, no. 04 (2019): 132–42. https://doi.org/10.5281/zenodo.2638669.

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In this study, AVO/AVA Synthetics and petrophysical well log analysis was carried out to discriminate between the reservoir and non-productive lithology for two wells Naimat Basal 01 & Siraj South-01.  Synthetic AVO/AVA traces of Naimat Basal 01 & Siraj South-01 were generated. The behavior of the theoretical and NMO corrected synthetics for Naimat Basal 01 has a weak response, while Siraj South-01 indicated a clear sharp anomaly. AVA synthetic created for well Naimat Basal-01 and Siraj South-01 using Zoeppritz equation clearly indicated amplitude variations. On the basis of AVO/A

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Sinai, Erin, Beau Hsia, Madison Cook, et al. "Adenocarcinoma in villous adenoma: Demographics analysis." Journal of Clinical Oncology 41, no. 16_suppl (2023): e18024-e18024. http://dx.doi.org/10.1200/jco.2023.41.16_suppl.e18024.

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e18024 Background: Adenocarcinoma in Villous Adenoma (AVA) is a metastatic disease that arises from villous adenomas. These adenocarcinomas can arise from different tissues, particularly this analysis looked at AVA arising from the head and neck region. Treatment for otolaryngological AVA varied depending on grade, but the majority of patients received surgery or radiation. Despite its rarity, 16.7% of patients pass within 90 days after receiving surgery for this cancer. Given the rarity, data analysis of demographic findings could provide important information regarding its occurrence and dis

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Tygel, Martin, Lúcio T. Santos, Jörg Schleicher, and Peter Hubral. "Kirchhoff imaging as a tool for AVO/AVA analysis." Leading Edge 18, no. 8 (1999): 940–45. http://dx.doi.org/10.1190/1.1438413.

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Liu, Tao, and Xuewei Liu. "Identification of morphologies of gas hydrate distribution based on amplitude variation with angle analysis." GEOPHYSICS 83, no. 3 (2018): B143—B154. http://dx.doi.org/10.1190/geo2017-0072.1.

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There are two basic distribution morphologies of gas hydrates in nature: pore filling and fracture filling. Identification of gas hydrate morphologies is essential for improved resource evaluation and exploitation. Improper exploitation may cause seafloor instability, lead to atmospheric venting, and exacerbate the greenhouse effect. To identify gas hydrate morphologies, we combine rock-physics modeling and amplitude variation with angle (AVA) analysis to study the theoretical AVA patterns of the bottom simulating reflector (BSR) beneath the pore-filling and fracture-filling gas hydrate bearin

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Woolman, Mike, and Keshun Liu. "Simplified Analysis and Expanded Profiles of Avenanthramides in Oat Grains." Foods 11, no. 4 (2022): 560. http://dx.doi.org/10.3390/foods11040560.

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Uniquely, oats contain avenanthramides (AVAs), a group of phenolic alkaloids, exhibiting many health benefits. AVA analysis involves extraction with alcohol-based solvents and HPLC separation with UV and/or mass spectrometer detectors. There are many reported methods to extract AVAs. Almost all entail multiple extractions. The whole procedure is time- and labor-intensive. Furthermore, most quantifications are limited to three common AVAs (2f, 2p, 2c). The present study compared three extraction methods (all at 50 °C) for their effects on AVA concentrations and composition (% relative to total

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Ogo, Taichi, Kenro Kawada, Yasuaki Nakajima, Yutaka Tokairin, Takashi Ito, and Tatsuyuki Kawano. "Comparative analysis of avascular areas in superficial esophageal squamous cell carcinomas using in vivo and ex vivo magnifying endoscopy." Endoscopy International Open 05, no. 10 (2017): E999—E1004. http://dx.doi.org/10.1055/s-0043-117956.

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Abstract Background and study aims An avascular area (AVA), one of the microvasculature changes in superficial esophageal cancers, appears when a tumor demonstrates a bulky growth pattern. We aimed to compare endoscopic and histopathological findings by observing formalin-fixed AVA specimens using magnifying endoscopy. Patients and methods A prospective analysis was conducted on 16 patients with superficial esophageal cancer, including AVA, who underwent endoscopic submucosal dissection (ESD). Magnifying endoscopy and blue laser imaging were used to identify AVAs. After the ESD, the AVA width

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Contreras, Arturo, Carlos Torres-Verdín, and Tim Fasnacht. "AVA simultaneous inversion of partially stacked seismic amplitude data for the spatial delineation of lithology and fluid units of deepwater hydrocarbon reservoirs in the central Gulf of Mexico." GEOPHYSICS 71, no. 4 (2006): E41—E48. http://dx.doi.org/10.1190/1.2212276.

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This paper describes the successful application of amplitude-versus-angle (AVA) inversion of prestack-seismic amplitude data to detect and delineate deepwater hydrocarbon reservoirs in the central Gulf of Mexico. Detailed AVA fluid/lithology sensitivity analysis was conducted to assess the nature of AVA effects in the study area based on well-log data. Standard techniques such as crossplot analysis, Biot-Gassmann fluid substitution, AVA reflectivity modeling, and numerical simulation of synthetic gathers were part of the AVA sensitivity analysis. Crossplot and Biot-Gassmann analyses indicate s

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Zhang, Zhao, Chen Bao, Reynaldo Cardona, et al. "Introduction to special section: Rock properties from AVA/AVO analysis." Interpretation 8, no. 1 (2020): SAi—SAiii. http://dx.doi.org/10.1190/int-2019-1212-spseintro.1.

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Nagalla, Srikanth, Moshe Y. Levy, Shruti Chaturvedi, et al. "Real-World Treatment Patterns and Outcomes in Patients with Primary Immune Thrombocytopenia Treated with Avatrombopag in the United States: Real-AVA 2.0 Interim Analysis Results." Blood 144, Supplement 1 (2024): 3700. https://doi.org/10.1182/blood-2024-200320.

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Introduction: Immune thrombocytopenia (ITP) is an autoimmune disorder characterized by low platelet counts (PCs), which may lead to serious bleeding episodes. Thrombopoietin-receptor agonists (TPO-RAs), including avatrombopag (AVA), are approved for the treatment of adults with chronic ITP. Response to AVA is typically defined as the achievement of target PC levels and reductions in the use of concomitant medications such as steroids. In clinical trials, &gt;90% of patients (Pts) achieved a response to AVA at a threshold of PC ≥50k/µL. However, limited real-world evidence exists on AVA use

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Raddatz, Michael A., Holly M. Gonzales, Eric Farber-Eger, Quinn S. Wells, Brian R. Lindman, and W. David Merryman. "Characterisation of aortic stenosis severity: a retrospective analysis of echocardiography reports in a clinical laboratory." Open Heart 7, no. 2 (2020): e001331. http://dx.doi.org/10.1136/openhrt-2020-001331.

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ObjectiveTo evaluate how common echocardiographic metrics of aortic stenosis (AS) influence the proportion of patients who may be categorised as having severe stenosis and therefore considered for valve replacement.MethodsRetrospective analysis was performed of all echocardiograms with aortic valve area (AVA) ≤1.2 cm2 and peak jet velocity (Vmax) ≥3 m/s from 1 December 2014 through 30 October 2017 at a single academic medical centre. Echocardiographic indices collected include AVA, Vmax, left ventricular ejection fraction, stroke volume and annotated aortic stenosis severity.ResultsAmong 807 p

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Nemes, Attila, Nóra Ambrus, and Csaba Lengyel. "Does Left Ventricular Rotational Mechanics Depend on Aortic Valve Annular Dimensions in Healthy Adults?—A Three-Dimensional Speckle-Tracking Echocardiography-Derived Analysis from the MAGYAR-Healthy Study." Biomedicines 13, no. 4 (2025): 817. https://doi.org/10.3390/biomedicines13040817.

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Introduction. There is a balanced relationship between the left ventricle (LV), the aortic valve and the aorta, the functioning of which is essential for optimal circulation. Associations between simultaneously assessed LV rotational mechanics and aortic valve annular (AVA) dimensions respecting the cardiac cycle have never been assessed in clinical circumstances in healthy individuals by three-dimensional speckle-tracking echocardiography (3DSTE). The present study aimed to perform an extensive investigation in order to clarify their possible associations. Methods. The present study comprised

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Mingot-Castellano, María Eva, María Teresa Alvarez-Román, María Luisa Lozano, et al. "Use of Avatrombopag in Patients with Immune Thrombocytopenia: Interim Analysis of the Phase 4 Adopt Study." Blood 144, Supplement 1 (2024): 714. https://doi.org/10.1182/blood-2024-203491.

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Introduction: Avatrombopag (AVA) is an oral thrombopoietin receptor agonist (TPO-RA) approved for the treatment of adults with chronic immune thrombocytopenia (ITP). Both the disease and the treatment strategies can have a significant impact on ITP patients' health-related quality of life (HRQoL). Therefore, patient-reported outcomes (PROs) play a crucial role in evaluating patients' perspectives on their condition, treatments, and healthcare journey. Previously we reported an interim analysis of the ADOPT study designed to evaluate the real-world effectiveness and safety of AVA in routine cli

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An, Ying, and Jun Lu. "Calculation of AVA Responses for Finely Layered Reservoirs." Mathematical Problems in Engineering 2018 (May 22, 2018): 1–11. http://dx.doi.org/10.1155/2018/8519190.

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In oil and gas seismic exploration, responses of amplitude variation with incidence angle (AVA) of strata with a single thin layer have been extensively studied, thus laying the theoretical foundation for the prediction of finely layered reservoirs. However, studies on AVO responses of common shale-sand finely layered reservoirs are rare because of mathematical modeling problems involved with such complicated reservoirs. To accurately analyze the AVA responses of finely layered reservoirs, we describe such a reservoir as a transversely isotropic medium with a vertical axis of symmetry (VTI med

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Zeb, Jahan, Sanjeev Rajput, and Jimmy Ting. "Seismic petrophysics focused case study for AVA modelling and pre-stack seismic inversion." APPEA Journal 56, no. 1 (2016): 341. http://dx.doi.org/10.1071/aj15025.

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Hydrocarbon reservoirs are characterised by integrating seismic, well-log and petrophysical information, which are dissimilar in spatial distribution, scale and relationship to reservoir properties. Well logs are essential for amplitude versus offset (AVO) modelling and seismic inversion. The usability of well logs can be determined during wavelet estimation, seismic-to-well ties, background model building, property distribution for inversion, deriving probability density functions and variograms, offset-to-angle conversion of seismic data, and many other processes. For the implementation of s

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Stefanini, Matteo, Eleonora Gaspari, Luca Boi, et al. "Correlation between US-PSV and 64-Row MDCTA with Advanced Vessel Analysis in the Quantification of 50–70% Carotid Artery Stenosis." International Journal of Vascular Medicine 2012 (2012): 1–8. http://dx.doi.org/10.1155/2012/928638.

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Purpose. To correlate ultrasonographic peak systolic velocity (US-PSV) and 64-row multidetector computed tomography angiography (MDCTA) with advanced vessel analysis (AVA) software in the quantification of 50–70% carotid artery stenosis.Materials and methods. 199 consecutive patients (247 arteries) with internal carotid artery (ICA) or third proximal bifurcation stenosis. Each patient was studied by duplex US (DUS) and 64-row MDCTA with AVA software.Results. DUS showed PSV measurements less than 125 cm/s in 51 carotid stenosis and a value greater than this in 196 arteries. 64-row MDCTA AVA sof

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Allen, Bryan G., Douglas R. Spitz, Kranti A. Mapuskar, et al. "One-year reductions in cisplatin-related chronic kidney disease (CKD) in patients with head and neck (HNC) cancer treated with avasopasem manganese: A prespecified analysis from the phase 3 ROMAN trial." Journal of Clinical Oncology 41, no. 16_suppl (2023): 6066. http://dx.doi.org/10.1200/jco.2023.41.16_suppl.6066.

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6066 Background: Cisplatin-induced acute kidney injury (AKI), acute kidney disease (AKD), and chronic kidney disease (CKD) are associated with increased production of reactive oxygen species, notably superoxide, in conjunction with alterations in mitochondrial electron transport chain complex activities in tubular epithelial cells (Mapuskar et al. Antioxidants 2021;10:1329). These pathologies can be targeted and thereby inhibited by increasing superoxide dismutase activity, which converts superoxide to hydrogen peroxide. The investigational new drug avasopasem manganese (AVA), a selective dism

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Hell, Michaela M., Bettine Steinmann, Tassilo Scherkamp, Martin B. Arnold, Stephan Achenbach, and Mohamed Marwan. "Analysis of left ventricular function, left ventricular outflow tract and aortic valve area using computed tomography: Influence of reconstruction parameters on measurement accuracy." British Journal of Radiology 94, no. 1124 (2021): 20201306. http://dx.doi.org/10.1259/bjr.20201306.

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Objectives: Computed tomography (CT) allows reproducible assessment of left ventricular (LV) function, left ventricular outflow tract area (LVOTarea) and aortic valve area (AVA). We evaluated the influence of image reconstruction parameters on these measurements. Methods: We analyzed 45 contrast-enhanced, retrospectively ECG-gated CT datasets acquired on a third-generation dual source system. A standard filtered-back-projection data set (20 cardiac phases (5% steps, 0–95%), 0.6-mm-slice thickness, 512 × 512 matrix) and eight reconstructions with modified slice thickness (1–8 mm), number of car

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Booth, A. D., R. A. Clark, B. Kulessa, T. Murray, and A. Hubbard. "Thin-layer effects in glaciological seismic amplitude-versus-angle (AVA) analysis: implications for characterising a subglacial till unit, Russell Glacier, West Greenland." Cryosphere Discussions 6, no. 1 (2012): 759–92. http://dx.doi.org/10.5194/tcd-6-759-2012.

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Abstract. Seismic amplitude-versus-angle (AVA) methods are a powerful means of interpreting the physical properties of subglacial material, although interpreting an AVA response is complicated in the case of a thinly-layered substrate. A layer thinner than one-quarter of the seismic wavelength is considered seismically "thin", and reflections from its bounding interfaces are perceived as a single event. Since a lodged (non-deforming) subglacial till can capped by a thin (metre-scale) cap of dilatant (deforming) till, serious misinterpretations can result if thin layer considerations are not ho

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Putri Auliya, Amanda, and Sagito Puan Agustio. "Analysis of The Main Character Ava Alessandra in Ika Natassa’s Novel Heartbreak Motel." International Journal of Education Management and Sociology 4, no. 4 (2025): 181–88. https://doi.org/10.58818/ijems.v4i4.217.

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Heartbreak Motel, a romantic drama written by Ika Natassa, follows the emotional journey of Ava Alessandra, an actress dedicated to embodying every character she portrays. Ava immerses herself in various acting techniques and confronts a wide range of emotions experienced by her roles. This analysis delves into the painful experiences faced by the protagonist, examined through the lens of Sigmund Freud’s psychoanalytic theory. Freud’s model explores the dynamic interactions between the id, ego, and superego three elements that shape the human psyche, each influenced by different factors, inclu

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Aldawsari, Hibah M., Usama A. Fahmy, Fathy Abd-Allah, and Osama A. A. Ahmed. "Formulation and Optimization of Avanafil Biodegradable Polymeric Nanoparticles: A Single-Dose Clinical Pharmacokinetic Evaluation." Pharmaceutics 12, no. 6 (2020): 596. http://dx.doi.org/10.3390/pharmaceutics12060596.

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Avanafil (AVA) is a second-generation phosphodiesterase-5 (PDE5) inhibitor. AVA shows high selectivity to penile tissues and fast absorption, but has a bioavailability of about 36%. The aim was to formulate and optimize AVA-biodegradable nanoparticles (NPs) to enhance AVA bioavailability. To assess the impact of variables, the Box–Behnken design was utilized to investigate and optimize the formulation process variables: the AVA:poly (lactic-co-glycolic acid) (PLGA) ratio (w/w, X1); sonication time (min, X2); and polyvinyl alcohol (PVA) concentration (%, X3). Particle size (nm, Y1) and EE% (%,

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Pipberger, H. A., H. V. Pipberger, and C. D. McManus. "Methodology of ECG Interpretation in the AVA Program." Methods of Information in Medicine 29, no. 04 (1990): 337–40. http://dx.doi.org/10.1055/s-0038-1634797.

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AbstractThe AVA program combines a thirty-year history with an approach that remains innovative; namely: multivariate statistical analysis on orthogonal ECG leads. Its diagnostic reference base includes only diagnoses independently verified by non-ECG criteria. The diagnostic module assesses probabilities of nine alternative disease categories, based on QRS-T parameters; or four other categories in case of conduction defects. Probabilities of left or right atrial overload are also computed. The program also recognizes wall injury, T-wave abnormalities, electrolyte disturbances, myocardial isch

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Proborini, Ellen, Sri Adi Widodo, and Uli Ulfa. "Efektifitas Penerapan Model Pembelajaran Problem Based Learning dengan Audio Visual Aid (AVA) terhadap Kemampuan Berpikir Logis Matematis." Jurnal Ilmiah Soulmath : Jurnal Edukasi Pendidikan Matematika 12, no. 1 (2024): 75–88. http://dx.doi.org/10.25139/smj.v12i1.7632.

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Abstract  This research aims to determine how effective the application of the PBL learning model with Audio Visual Aid (AVA) is on the ability to think logically in matrix material. The subject of this research is class XI TJKT SMK Tunas Harapan Pati for the 2023/2024 academic year. The data used in this research was obtained from filling out a questionnaire on a scale of 1 to 5. Respondents filled out the questionnaire twice, namely before implementing PBL with AVA and after implementing PBL with AVA. Analysis prerequisite tests were carried out using the Liliefors test for normality a

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Nagalla, Srikanth, Michael Vredenburg, Wei Tian, and Lee F. Allen. "Platelet Response to Avatrombopag in Patients with Chronic Immune Thrombocytopenia: Additional Analyses from a Phase 3 Study and Its Extension." Blood 134, Supplement_1 (2019): 1071. http://dx.doi.org/10.1182/blood-2019-130963.

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Background: Avatrombopag (AVA) is a novel, oral thrombopoietin receptor agonist (TPO-RA) recently FDA approved for the treatment of chronic immune thrombocytopenia (ITP) in patients who have not responded to prior therapies. Additionally, AVA is approved for the treatment of thrombocytopenia in chronic liver disease patients undergoing a procedure. AVA is unique in that it does not have a boxed safety warning for hepatoxicity, is administered with food, and does not have any dietary restrictions. Further, it does not interact with polyvalent cations (calcium, magnesium, iron, selenium, zinc, e

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Theune, Ulrich, Ingrid Østgård Jensås, and Jo Eidsvik. "Analysis of prior models for a blocky inversion of seismic AVA data." GEOPHYSICS 75, no. 3 (2010): C25—C35. http://dx.doi.org/10.1190/1.3427538.

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Resolving thinner layers and focusing layer boundaries better in inverted seismic sections are important challenges in exploration and production seismology to better identify a potential drilling target. Many seismic inversion methods are based on a least-squares optimization approach that can intrinsically lead to unfocused transitions between adjacent layers. A Bayesian seismic amplitude variation with angle (AVA) inversion algorithm forms sharper boundaries between layers when enforcing sparseness in the vertical gradients of the inversion results. The underlying principle is similar to hi

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Schnabel, Michael, Ernst R. Flueh, Dirk Klaeschen, and Matthias Zillmer. "AVA analysis reveals in situ sediment diagenesis at the Costa Rican décollement." Sedimentary Geology 196, no. 1-4 (2007): 269–77. http://dx.doi.org/10.1016/j.sedgeo.2006.06.003.

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Rączka, Waldemar, Jarosław Konieczny, and Marek Sibielak. "Modelling of SMA Vibration Systems in an AVA Example." Materials 14, no. 19 (2021): 5905. http://dx.doi.org/10.3390/ma14195905.

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Vibration suppression, as well as its generation, is a common subject of scientific investigations. More and more often, but still rarely, shape memory alloys (SMAs) are used in vibrating systems, despite the fact that SMA springs have many advantages. This is due to the difficulty of the mathematical description and the considerable effortfulness of analysing and synthesising vibrating systems. The article shows the analysis of vibrating systems in which spring elements made of SMAs are used. The modelling and analysis method of vibrating systems is shown in the example of a vibrating system

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Booth, A. D., R. A. Clark, B. Kulessa, et al. "Thin-layer effects in glaciological seismic amplitude-versus-angle (AVA) analysis: implications for characterising a subglacial till unit, Russell Glacier, West Greenland." Cryosphere 6, no. 4 (2012): 909–22. http://dx.doi.org/10.5194/tc-6-909-2012.

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Abstract. Seismic amplitude-versus-angle (AVA) methods are a powerful means of quantifying the physical properties of subglacial material, but serious interpretative errors can arise when AVA is measured over a thinly-layered substrate. A substrate layer with a thickness less than 1/4 of the seismic wavelength, λ, is considered "thin", and reflections from its bounding interfaces superpose and appear in seismic data as a single reflection event. AVA interpretation of subglacial till can be vulnerable to such thin-layer effects, since a lodged (non-deforming) till can be overlain by a thin (met

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Olagundoye, Olatunbosun, Stephen Adebayo, Patrick Idoko, et al. "Amplitude variation with angle analysis for deepening of a well planned as an infill opportunity: A case study of a mature oil field in the Niger Delta." Leading Edge 41, no. 10 (2022): 719–29. http://dx.doi.org/10.1190/tle41100719.1.

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A challenge in mature fields is the enhancement of field life to maximize investment. To meet this challenge, well-recovery optimization, robust geosteering for efficient well placement in terms of drainage and sweep, and the targeting of nearby undeveloped prospects or infill opportunities (IFOs) are routinely applied to prolong productivity. Quantitative interpretation schemes such as amplitude variation with angle (AVA) analysis and seismic inversion play important roles in targeting IFOs. We present the application of AVA analysis to an IFO located in a mature oil field in the Niger Delta.

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Yamaguchi, Yuichi, Takaomi Kobayashi, Mitsugu Todo, et al. "Adjacent vertebral fractures in the lumbar and thoracic spine after balloon kyphoplasty: A finite element analysis." Medicine 103, no. 17 (2024): e37912. http://dx.doi.org/10.1097/md.0000000000037912.

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The purpose of the present study was to mechanically verify after vertebral augmentation (AVA) scores using a finite element method (FEM) with accurate material constants of balloon kyphoplasty (BKP) cement. Representative cases with AVA scores of 1 (case 1), 3 (case 2), and 5 (case 3) among patients with vertebral body fractures who underwent BKP were analyzed. A FEM model consisting of 5 vertebral bodies was created, including the injured vertebral body in each case. The amount of displacement for each load (up to 4000 N) between the upper and lower vertebral bodies of each model was measure

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ZECHMANN, JENNA M., ADAM D. BOOTH, MARTIN TRUFFER, ALESSIO GUSMEROLI, JASON M. AMUNDSON, and CHRISTOPHER F. LARSEN. "Active seismic studies in valley glacier settings: strategies and limitations." Journal of Glaciology 64, no. 247 (2018): 796–810. http://dx.doi.org/10.1017/jog.2018.69.

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ABSTRACTSubglacial tills play an important role in glacier dynamics but are difficult to characterize in situ. Amplitude Variation with Angle (AVA) analysis of seismic reflection data can distinguish between stiff tills and deformable tills. However, AVA analysis in mountain glacier environments can be problematic: reflections can be obscured by Rayleigh wave energy scattered from crevasses, and complex basal topography can impede the location of reflection points in 2-D acquisitions. We use a forward model to produce challenging synthetic seismic records in order to test the efficacy of AVA i

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Liu, Yuzhu, Weigang Liu, Jizhong Yang, and Liangguo Dong. "Extracting angle domain common image gather with variable density acoustic-wave equation." Journal of Geophysics and Engineering 18, no. 2 (2021): 192–99. http://dx.doi.org/10.1093/jge/gxab007.

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Abstract Angle domain common image gathers (ADCIGs), commonly regarded as important prestacked gathers, provide the information required for velocity model construction and the phase and amplitude information needed for subsurface structures in oil/gas exploration. Based on the constant-density acoustic-wave equation assumption, the ADCIGs generated from reverse time migration ignore the fact that the subsurface density varies with location. Consequently, the amplitude versus angle (AVA) analysis extracted from these ADCIGs is not accurate. To partially solve this problem and to improve the ac

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Grace, Rachael F., Goksel Leblebisatan, Yesim Aydinok, et al. "Analysis of Durability of Response to Avatrombopag (AVA) from a Phase 3b Multicenter, Randomized, Double-Blind, Placebo (PBO)-Controlled, Parallel-Group Trial to Evaluate the Efficacy and Safety of AVA for the Treatment of Pediatric Patients with Immune Thrombocytopenia." Blood 144, Supplement 1 (2024): 1191. https://doi.org/10.1182/blood-2024-205431.

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Background: After failure of first-line therapies (e.g. corticosteroids or immunoglobulin) in pediatric immune thrombocytopenia (ITP), treatment options for children include immunosuppressants and thrombopoietin receptor agonists (TPO-RAs). The oral TPO-RA AVA could be a desirable option for pediatric patients as it does not require an injection in a physician's office and can be taken with meals and does not carry food-type or timing restrictions. Top-line results of the Phase 3b, multicenter, randomized, double-blind, placebo-controlled, parallel-group trial to evaluate the efficacy and safe

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Burov, Aleksej. "The Doomsday Scenario Depicted by Frau Ava: The Question of Sources." Respectus Philologicus, no. 38(43) (October 19, 2020): 190–201. http://dx.doi.org/10.15388/respectus.2020.38.43.67.

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The present article explores an excerpt depicting the scenario of the last days in the poem Das Jüngste Gericht (Eng. The Last Judgement), written by the first-named German female writer Frau Ava (circa 1060–1127). The study addresses the question of sources used in the depiction of the end times in the excerpt under consideration (lines 1–160). The study does not question the affinity between the scenes of the last days illustrated in the excerpt and the apocalyptic plot of the Latin texts of Pseudo-Beda (the turn of the 12th century) and Petrus Daminanus (1006–1072); however, it is assumed t

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Liu, Xin, Lulu Chen, Gehang Ju, et al. "Investigation of the ABCB1 Gene Polymorphism and Food Effects on the Avatrombopag Pharmacokinetics in Chinese Individuals: A Population Pharmacokinetic/Pharmacodynamic Analysis." Pharmaceuticals 18, no. 6 (2025): 903. https://doi.org/10.3390/ph18060903.

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Background/Objectives: Avatrombopag (AVA), a thrombopoietin receptor agonist used to treat thrombocytopenia in patients with chronic liver disease, exhibits significant pharmacokinetic (PK) variability, particularly under fasting conditions. This study investigates the combined influence of food intake and genetic polymorphisms in CYP2C9 and ABCB1 on the PK and pharmacodynamics (PD) of AVA, with the goal of informing individualized dosing strategies. Methods: A pharmacogenetic analysis was conducted in 92 healthy participants, who received 20 mg of AVA under both fasting and fed conditions. A

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Liu, Xiaobo, Jingyi Chen, Jing Zeng, et al. "An adaptive stratified joint PP and PS AVA inversion using accurate Jacobian matrix." GEOPHYSICS 86, no. 4 (2021): R447—R461. http://dx.doi.org/10.1190/geo2019-0785.1.

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Amplitude variation with incidence angle (AVA) analysis is an essential tool for discriminating lithology in hydrocarbon reservoirs. Compared to traditional AVA inversion using only compressional wave (P-wave) information, joint AVA inversion using PP and PS seismic data provides better estimation of rock properties (e.g., density, P- and shear wave [S-wave] velocities). Currently, the most used AVA inversions depend on the approximations of the Zoeppritz equations (e.g., the Shuey and Aki-Richards approximations), which are not suitable for formations with strong contrast interfaces and seism

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Tarantino, Michael D., Scott Kolodny, Jessica Zhang, Brian Jamieson, and Michael Vredenburg. "Interim Analysis of Treatment Satisfaction from a Prospective Phase 4 Study in Adult Immune Thrombocytopenia (ITP) Subjects after Switching from Eltrombopag or Romiplostim to Avatrombopag." Blood 142, Supplement 1 (2023): 3954. http://dx.doi.org/10.1182/blood-2023-189224.

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Background: Recently, the Thrombopoietin-Receptor Agonist (TPO-RA) Patient experience survey (TRAPeze) determined that the characteristics which influence preference towards TPO-RA treatments the most were the method of administration and drug-food interactions. Specifically, participants were more likely to select an oral tablet over a subcutaneous injection and a treatment without food restrictions rather than one with food restrictions (McDonald V, et al, 2021). A majority of patients in a real-world analysis who switched from eltrombopag (ELT) or romiplostim (ROMI) to avatrombopag (AVA) di

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Chang, Jui-Shu, Hung-Jen Lin, Jeng-Shyan Deng, Wen-Tzu Wu, Shyh-Shyun Huang та Guan-Jhong Huang. "Preventive Effects of Velvet Antler (Cervus elaphus) against Lipopolysaccharide-Induced Acute Lung Injury in Mice by Inhibiting MAPK/NF-κB Activation and Inducing AMPK/Nrf2 Pathways". Evidence-Based Complementary and Alternative Medicine 2018 (2018): 1–13. http://dx.doi.org/10.1155/2018/2870503.

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Velvet antler (Cervus elaphus) is a typical traditional animal medicine. It is considered to have various pharmacological effects including stimulation of the immune system, increase in the physical strength, and enhancement of sexual function. This paper aims to investigate the aqueous extract of velvet antler (AVA) in the mouse models of LPS-induced ALI. Inhibition of NO, TNF-α, IL-1β, IL-6, and IL-10 productions contributes to the attenuation of LPS-induced lung inflammation by AVA. A 5-day pretreatment of AVA prevented histological alterations and enhanced antioxidant enzyme activity in lu

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Richards, Jeffrey A., Dongxin Xu, Jill Gilkerson, Umit Yapanel, Sharmistha Gray, and Terrance Paul. "Automated Assessment of Child Vocalization Development Using LENA." Journal of Speech, Language, and Hearing Research 60, no. 7 (2017): 2047–63. http://dx.doi.org/10.1044/2017_jslhr-l-16-0157.

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Purpose To produce a novel, efficient measure of children's expressive vocal development on the basis of automatic vocalization assessment (AVA), child vocalizations were automatically identified and extracted from audio recordings using Language Environment Analysis (LENA) System technology. Method Assessment was based on full-day audio recordings collected in a child's unrestricted, natural language environment. AVA estimates were derived using automatic speech recognition modeling techniques to categorize and quantify the sounds in child vocalizations (e.g., protophones and phonemes). These

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Tarantino, Michael D., Scott Kolodny, Jessica Zhang, Brian Jamieson, and Michael Vredenburg. "Interim Analysis of Platelet Response in a Prospective Phase 4 Study in Adult Immune Thrombocytopenia (ITP) Subjects after Switching from Eltrombopag (ELT) or Romiplostim (ROMI) to Avatrombopag (AVA)." Blood 142, Supplement 1 (2023): 2577. http://dx.doi.org/10.1182/blood-2023-189908.

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Background: Three thrombopoietin receptor agonists (TPO-RAs) [eltrombopag, romiplostim, and avatrombopag] are currently approved in the United States (US) and Europe for the treatment of ITP in adult patients. ROMI is administered via injection whereas ELT and AVA are oral medications. Polyvalent cations significantly limit the bioavailability of ELT; therefore, patients must follow rigid dietary restrictions. AVA is taken with meals and does not have food-type or timing restrictions, aligning with reported patient preferences for ITP treatments. 1 A recent retrospective study of heavily pre-t

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Dow, C. F., A. Hubbard, A. D. Booth, S. H. Doyle, A. Gusmeroli, and B. Kulessa. "Seismic evidence of mechanically weak sediments underlying Russell Glacier, West Greenland." Annals of Glaciology 54, no. 64 (2013): 135–41. http://dx.doi.org/10.3189/2013aog64a032.

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Abstract Amplitude-versus-angle (AVA) analysis of a seismic reflection line, imaged 13 km from Russell Glacier terminus, near the western margin of the Greenland ice sheet (GrIS), suggests the presence of sediment at the bed. The analysis was complicated by the lack of identifiable multiples in the data due to a highly irregular and crevassed ice surface, rendering deeper seismic returns noisy. A modified technique for AVA processing of glacial seismic data using forward modelling with primary reflection amplitudes and simulated multiple amplitudes is presented here. Our analysis demonstrates

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Tuncay, V., N. Prakken, P. M. A. van Ooijen, R. P. J. Budde, T. Leiner, and M. Oudkerk. "Semiautomatic, Quantitative Measurement of Aortic Valve Area Using CTA: Validation and Comparison with Transthoracic Echocardiography." BioMed Research International 2015 (2015): 1–9. http://dx.doi.org/10.1155/2015/648283.

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Objective. The aim of this work was to develop a fast and robust (semi)automatic segmentation technique of the aortic valve area (AVA) MDCT datasets.Methods. The algorithm starts with detection and cropping of Sinus of Valsalva on MPR image. The cropped image is then binarized and seed points are manually selected to create an initial contour. The contour moves automatically towards the edge of aortic AVA to obtain a segmentation of the AVA. AVA was segmented semiautomatically and manually by two observers in multiphase cardiac CT scans of 25 patients. Validation of the algorithm was obtained

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Yang, Wenqiang, Zhifang Yang, Zhaoyun Zong, Qianhao Sun, and Xinfei Yan. "AVA inversion for novel fluid indicator considering consolidation parameter." Journal of Geophysics and Engineering 19, no. 6 (2022): 1280–99. http://dx.doi.org/10.1093/jge/gxac083.

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Abstract Geofluid identification from seismic data are crucial for understanding reservoir characteristics. However, fluid indicators based on elastic parameter combinations show strong ambiguity in terms of geofluid identification. Although the effective pore-fluid bulk modulus proves to be the superior fluid indicator in geofluid discrimination, it is limited to empirical models such as the critical porosity model. The consolidation parameter model can evaluate the consolidation and compaction of sediments and is widely used due to its better applicability. Therefore, a novel fluid indicator

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Carcione, José M., Davide Gei, Marco A. B. Botelho, Ana Osella, and Matias de la Vega. "Fresnel reflection coefficients for GPR-AVA analysis and detection of seawater and NAPL contaminants." Near Surface Geophysics 4, no. 4 (2005): 253–63. http://dx.doi.org/10.3997/1873-0604.2005049.

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Jenkinson, Tim, Rishi Bansal, Alex Martinez, Mike Matheney, Vijay Khare, and Vincent Cornaglia. "Joint PP-PS angle-stack analysis and AVA inversion in Grane Field, offshore Norway." Leading Edge 29, no. 10 (2010): 1228–39. http://dx.doi.org/10.1190/1.3496913.

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