Gotowe bibliografie tematyczne / QTc parameters

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Gotowa bibliografia na temat „QTc parameters”

Autor: Grafiati
Data publikacji: 2 czerwca 2025
Data aktualizacji: 31 lipca 2025

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Artykuły w czasopismach na temat "QTc parameters"

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Vieweg, W. Victor R. "QTc and Metabolic Parameters." Journal of Clinical Psychiatry 67, no. 05 (2006): 838. http://dx.doi.org/10.4088/jcp.v67n0521e.

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Aksoy, S. M., S. Cay, G. Cagirci, and N. Sen. "Nebivolol therapy improves QTc and QTcd parameters in heart failure patients." Cardiovascular Journal of Africa 23, no. 4 (2012): 191–93. http://dx.doi.org/10.5830/cvja-2011-046.

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Relekar, Rhythm Yogandh, Priyavardhan Mishra, Vishal Raghunath Gabale, Iqra Chandmiya Qureshi, and Vijaykumar Gupta. "Association of QTc prolongation with liver function test and complications in patients with cirrhosis: An observational study." Journal of Family Medicine and Primary Care 14, no. 6 (2025): 2323–29. https://doi.org/10.4103/jfmpc.jfmpc_1814_24.

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ABSTRACT Introduction: Cirrhotic cardiomyopathy is a cardiac abnormality due to hepatic cirrhosis, which presents as a serious electrocardiographic complication and often the patient is asymptomatic. The objective of our study was to find the ECG changes in patients with various aetiologies of cirrhosis and correlate them with their respective LFT parameters. Materials and Methodology: We assessed the QTc interval in patients of various aetiologies of liver cirrhosis and correlated them with the prevalence of complication of cirrhosis, such as portal hypertension, splenomegaly, and ascites. Fu
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Ali, ORGUN, and Demet AKBAŞ Emine. "Evaluation of Ventricular Repolarization Parameters in Obese and Extremely Obese Children." Gevher Nesibe Journal of Medical & Health Sciences 8, Özel Sayısı (2023): 701–7. https://doi.org/10.5281/zenodo.8402874.

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<strong>Aim: </strong>Ventricular arrhythmias are one of the cardiovascular disorders seen in patients with obesity. Electrocardiography (ECG) is a simple and widely used method that enables the evaluation of ventricular depolarization parameters, which are the determinants of ventricular arrhythmias. In this study, we aimed to determine the effect of obesity on ventricular repolarization parameters in children with obesity and compare children who were obese and severely obese. <strong>Material and Methods: </strong>In the study, 86 children with obesity and 84 healthy normal-weight children
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Genç, Ahmet, and Gülsüm Meral Yılmaz Öztekin. "Effect of sacubutril/valsartan on Tp-e, QT, QTc, Tp-e/QTc parameters in heart failure with reduced ejection fraction." Cukurova Medical Journal 49, no. 1 (2024): 47–53. http://dx.doi.org/10.17826/cumj.1377925.

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Purpose: The purpose of this study is to evaluate ventricular repolarization before, at the first month, and sixth month after Sacubutril/Valsartan, an angiotensin receptor neprilysin inhibitor (ARNI) treatment in heart failure patients with reduced ejection fraction (HFrEF).&#x0D; Materials and Methods: We included 49 patients with HFrEF who switched to ARNI therapy. The 12-lead electrocardiography (ECG) was evaluated before ARNI therapy and also during the first and sixth months of the therapy. We evaluated demographic, clinical, and laboratory parameters, as well as medications and ECG data
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Uyar, Seyit, Mehmet Kök, Ayşe Ayan, Muhammet Ali Coşkuner, Gökhan Köker, and Nizameddin Koca. "The evaluation of the short-term and long-term hydroxychloroquine therapy on ECG parameters." Medicine 103, no. 32 (2024): e39039. http://dx.doi.org/10.1097/md.0000000000039039.

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Amidst the COVID-19 pandemic, hydroxychloroquine (HCQ) was widely administered despite limited data on its safety and efficacy. This study assesses the acute and chronic impacts of HCQ on electrocardiography (ECG) parameters alongside the effects of azithromycin and levofloxacin coadministration in patients with COVID-19. A comprehensive analysis was conducted on 109 COVID-19 patients receiving HCQ, with or without Azithromycin and/or Levofloxacin, and 51 long-term HCQ-treated Sjogren’s syndrome (SS) patients. ECG parameters, including QTc interval, were meticulously evaluated against a contro
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Hocagil, Hilal, Abdullah Cüneyt Hocagil, and Tuğba Akkaya Hocagil. "Evaluation of the Risk of Malignant Arrhythmia Through Electrocardiography Parameters in Patients with Urinary Stone Disease." Medical Journal of Western Black Sea 8, no. 2 (2024): 129–34. http://dx.doi.org/10.29058/mjwbs.1397031.

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Introduction: With a lifetime frequency of 10-15% and a recurrence rate of up to 50% within 10 years, urinary stone disease is a major cause of comorbidity. Recently, it has become widely recognized that urinary system stone disease is not only limited to kidney stone development but is also linked to cardiovascular disease and various other illnesses. Malignant arrhythmias (sudden cardiac death and ventricular arrhythmias) are consequences of coronary artery disease. Despite numerous studies demonstrating that urinary system stone disease is a risk factor for coronary artery disease, no elect
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MUHAMMED MUSHTAQ AHMED, ASHOK P YENKANCHI, HABIBULLAH ATTAR, SAIFUDDIN SARGIRO, and SHARHAN PP. "A study on QT dispersion and thrombolytic therapy in acute myocardial infarction." International Journal of Science and Research Archive 13, no. 1 (2024): 2489–795. http://dx.doi.org/10.30574/ijsra.2024.13.1.1968.

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Background: Myocardial infarction is a major manifestation of ischemic heart disease, a leading cause of death in developed nations and the third globally. QTc dispersion is an important marker of ventricular repolarization variations and arrhythmogenic risk. This study examines the effects of thrombolytic therapy on QTc dispersion in acute myocardial infarction Materials and methods: 88 patients admitted to Al Ameen Medical College Hospital, Vijayapur, for acute MI were included in the study. Over a period of 8±2 days, all patients underwent monitoring, with standard 12-lead ECGs conducted up
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МУРОМЦЕВА, Г. А., and В. В. КОНСТАНТИНОВ. "Prognostic parameters of the electrocardiogram and electrical heterogeneity of the ventricular myocardium." Kardiologicheskii vestnik, no. 3() (August 24, 2020): 54–59. http://dx.doi.org/10.36396/ms.2020.16.3.007.

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Основываясь на механизмах электрической гетерогенности миокарда желудочков, рассмотрены наиболее вероятные показатели ЭКГ, отраG жающие этот процесс. К их числу относят длительности комплекса QRS, электрической систолы (интервал QT и его корригированные формы, QTc и QTa) интервалы конечной части желудочкового комплекса (QTpa, TpTe), а также угловые характеристики периода реполяризации (углы TpGTref, TinitGTterm) и, главное, желудочковый градиент, пространственный и фронтальный углы QRSGT. В клинических и эпидемиологических исследованиях показаны высокие прогностические возможности этих показат
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Wilk-Śledziewska, Katarzyna, Rafał Śledziewski, Małgorzata Gryciuk, et al. "Heart Failure, Kidney Function, and Elderly Age, Rather than Levofloxacin Therapy, Are Associated with QTc Prolongation in COVID-19 Patients." Journal of Clinical Medicine 14, no. 11 (2025): 4006. https://doi.org/10.3390/jcm14114006.

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Background: Prolongation of the QT interval is directly related to the risk of ventricular arrhythmias and sudden cardiac death. Age, comorbidities, and treatment schemes have been shown to influence its prolongation and may also significantly affect the course of SARS-CoV-2 infection. Fluoroquinolones, widely used during the COVID-19 pandemic, are known for their ability to prolong the QT interval. Risk of ventricular arrhythmias has also been reported in patients with infectious diseases, and this risk may have been associated with high levels of interleukin-6 (IL-6). Purpose: The aim of thi
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Rozprawy doktorskie na temat "QTc parameters"

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Longa-Peña, Penélope Alejandra. "Orbital parameters estimation for compact binary stars." Thesis, University of Warwick, 2015. http://wrap.warwick.ac.uk/75554/.

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Most stars in the Galaxy are found in multiple systems of two or more stars orbiting together. Two stars orbiting around their centre of mass are called binary stars. In close binary stars, the evolution of one star affects its companion and evolutionary expansion of one star allows for mass exchange between the components. In most cases, the material from the less massive star forms an accretion disc around the heavier companion that has evolved into a compact stellar remnant, the final state of stellar evolution. We call these systems compact binary stars (CBs). The study of CBs is key to th
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Islam, Salma. "Exploring the parameters of peculiar velocity fields." Thesis, University of Glasgow, 2019. http://theses.gla.ac.uk/41045/.

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The main focus of this work is to make use of a novel tool in the cosmologist's toolbox when it comes to constraining the parameters of the peculiar velocity fields of the nearby Universe called ROBUST, whose unique properties and lack of reliance on secondary distance indicators sets it apart from other available constraining techniques, rendering it potentially very useful for future upcoming surveys such as the LSST and the SKA. While ROBUST proves itself more than adequate in constraining parameters in a mock controlled environment with the IRAS PSCz survey, it begins to struggle when appl
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Marzola, Luca. "On leptogenesis, flavour effects and the low energy neutrino parameters." Thesis, University of Southampton, 2012. https://eprints.soton.ac.uk/346819/.

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Contemporary physics is testing the boundaries of one of its existent paradigms, the Standard Model of Particle Physics. In recent years many attempts have been made in order to overcome the difficulties arising within this well known framework. Along with the effort made on the experimental side, for example the search for the Higgs boson at the Large Hadron Collider, there is a present requirement for testable theoretical scenarios describing physics beyond the current paradigms. To this purpose we consider the type I Seesaw extension of the Standard Model, in which the neutrino mass puzzle
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Chung, A. L. "Material parameter extraction in terahertz time domain spectroscopy." Thesis, University of Southampton, 2012. https://eprints.soton.ac.uk/352056/.

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In terahertz time domain spectroscopy (THz-TDS) material parameter extraction is necessary for determining the complex refractive index of materials in the THz region. The process of material parameter extraction requires the fitting of a theoretical model for the propagation the THz pulse through the material to experimentally acquired THz time domain data, where by the complex refractive index of the theoretical model is varied until it fits the experimental data. It requires close agreement between a model of the THz electric field propagation and experimental THz data for accurate extracti
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Day, Stephen Paul. "Approaches to ab-initio GIPAW-DFT calculations of NMR parameters in disordered materials." Thesis, University of Warwick, 2015. http://wrap.warwick.ac.uk/78781/.

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The use of ab initio Density Functional Theory (DFT) to calculate key Nuclear Magnetic Resonance (NMR) parameters has been shown to be very successful in a variety of cases. These calculations allow one to extract meaningful data from NMR measurements by providing a foundation for spectral peak assignment. However, first principle calculations for disordered systems, typically based on a single realisation of the disorder, are inadequate if the NMR parameters depend sensitively on the location of the disordered species. In this thesis, a number of different approaches for characterising disord
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Pilar, T. "Measurement of the neutral D meson mixing parameters in D0 -> KSπ+π− decays". Thesis, University of Warwick, 2014. http://wrap.warwick.ac.uk/66723/.

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A model-independent measurement of the charm mixing parameters xD and yD in the D0 -> KSπ+π− decay mode is presented. The method uses ratios of yields in symmetric bins of the Dalitz plot and is binned in decay time. This is an alternative approach that does not require the knowledge of the phase-space model of the decay. It also preserves good sensitivity to xD and to the relative sign between xD and yD. Charm mixing parameters are an important step to measuring CP violation in charm mixing. The measured values of the mixing parameters are xD = (1.89±0.43±0.21±0.51)% and yD = (−2.59±1.36±1.13
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Dagtekin, Ebru. "Measurement Of Nonuniform Magnetized Argon Plasma Discharge Parameters." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/12607934/index.pdf.

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Effects of a magnetic field on the double-probe technique are studied experimentally by means of symmetric floating computer controlled fast double probes in low and intermediate pressure plasmas. In addition, the effects of the magnetic field on the electron temperature, electron density, and electric field have been investigated. As it is expected, when there is no magnetic field, properties of the discharge plasma are best described by Langmuir theory. Whereas, when there&rsquo<br>s a magnetic field of sufficient strength Schottky&rsquo<br>s theory of ambipolar diffusion applies.
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Yan, Bo. "Active vibration isolation with a distributed parameter isolator." Thesis, University of Southampton, 2007. https://eprints.soton.ac.uk/51281/.

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Conventional vibration isolators are usually assumed to be massless for the purpose of modelling. This simplification tends to overestimate the isolator performance because of neglecting the internal resonances (IRs) due to the distributed mass effects in the isolator, which is especially important for lightly damped metallic isolators. Previous research on the problem of IRs is not particularly comprehensive, because it does not clarify the characteristics of the distributed parameter isolator. Furthermore, with the development of active vibration isolation, there is a need to investigate the
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Berger, Iris. "Assoziation des QTc-Intervalls und anderer EKG-Parameter mit Polymorphismen im Ankyrin-B-Gen in der MONICA-Augsburg-Population verglichen mit Polymorphismen im Ankyrin-B-Gen in einem Hochrisikokollektiv." kostenfrei, 2008. http://www.opus-bayern.de/uni-regensburg/volltexte/2008/1048/.

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Haster, Carl-Johan Olof. "Compact, diverse and efficient : globular cluster binaries and gravitational wave parameter estimation challenges." Thesis, University of Birmingham, 2016. http://etheses.bham.ac.uk//id/eprint/6839/.

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Following the first detection of gravitational waves from a binary coalescence, the study of the formation and evolution of these gravitational-wave sources and the recovery and analysis of any detected event will be crucial for the newly realised field of observational gravitational wave astrophysics. This thesis covers a wide range of these topics including simulating the dense environments where compact binaries are likely to form, focusing on binaries containing an intermediate mass black hole (IMBH). It is shown that such binaries do form, are able to merge within a ∼ 100 Myr simulation,
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Książki na temat "QTc parameters"

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Agbenu, Sabine. Die QT-Dispersion und weitere Dispersionsparameter des EKGs als prognostische Parameter für Myokardinfarktpatienten. 1998.

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Części książek na temat "QTc parameters"

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Zanetti, S., M. Keller, M. Winzeler, W. Saurer, B. Keller, and M. Messmer. "QTL for quality parameters for bread-making in a segregating wheat by spelt population." In Developments in Plant Breeding. Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-011-4475-9_40.

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Galimberti, Andrea. "FPGA-Based Design and Implementation of a Code-Based Post-quantum KEM." In Special Topics in Information Technology. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-51500-2_3.

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AbstractPost-quantum cryptography aims to design cryptosystems that can be deployed on traditional computers and resist attacks from quantum computers, which are widely expected to break the currently deployed public-key cryptography solutions in the upcoming decades. Providing effective hardware support is crucial to ensuring a wide adoption of post-quantum cryptography solutions, and it is one of the requirements set by the USA’s National Institute of Standards and Technology within its ongoing standardization process. This research delivers a configurable FPGA-based hardware architecture to
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Najeeb, Sofi, Anumalla Mahender, Annamalai Anandan, Waseem Hussain, Zhikang Li, and Jauhar Ali. "Genetics and Breeding of Low-Temperature Stress Tolerance in Rice." In Rice Improvement. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-66530-2_8.

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AbstractLow-temperature stress (LTS) is one of the major abiotic stresses that affect crop growth and ultimately decrease grain yield. The development of rice varieties with low-temperature stress tolerance has been a severe challenge for rice breeders for a long time. The lack of consistency of the quantitative trait loci (QTLs) governing LTS tolerance for any given growth stage over different genetic backgrounds of mapping populations under different low-temperature stress conditions remains a crucial barrier for adopting marker-assisted selection (MAS). In this review, we discuss the ideal
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Svorc Jr, Pavol, and Pavol Svorc. "Rat Electrocardiography and General Anesthesia." In Cardiovascular Diseases [Working Title]. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.104928.

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General anesthesia is an established and well-known factor with a significant impact on cardiac parameters, which can be a problem in the final evaluation of changes in the individual electrophysiological myocardial parameters after various interventions. The present chapter provides a composite review of published data on electrocardiographic parameters (heart rate, PR interval, P wave duration, P wave amplitude, QRS complex, QT and QTc interval duration, and R wave and T wave amplitude) for in vivo rat experiments under general anesthesia from 130 articles, which were retrieved from a search
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Lin, X., H. Zhang, and A. M. Rappe. "Optimization of quantum Monte Carlo wave functions using analytical energy derivatives." In Quantum Monte Carlo. Oxford University PressNew York, NY, 2007. http://dx.doi.org/10.1093/oso/9780195310108.003.00125.

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Abstract The optimization of parameters in trial wavefunctions by minimizing the variance in local energy was used for some of the earliest variationala and diffusionb QMC calculations, and it has been used ever since by most practitioners of QMC. Perhaps the best known examples are given in the paper by Schmidt and Moskowitzc for optimizing their nine-parameter Jastrow functions for first-row atoms. An alternative method of optimization, leading to lower variational energies for these atoms, is reported in this paper.
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Das, Sudeshna, Anshit Mukherjee, and Sohini Banerjee. "Quantum-Driven Hydrology." In Advances in Computational Intelligence and Robotics. IGI Global, 2025. https://doi.org/10.4018/979-8-3693-9770-1.ch017.

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Flood has emerged as a pressing global problem with climate change impact that endangers our security, structures, and balance of nature. The conventional flood forecast techniques therefore face challenges with available data and with computation computations. We proposed a new Quantum Variational Hydrological Paradigm, based on Quantum-Train Long Short-Term Memory (QT-LSTM) model, that optimises parameter training with a significant decrease of trainable parameters compared with traditional models to predict flood and disaster management. The model takes a centralized dataset consisting of h
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Kapoor, Nishant Raj, Ashok Kumar, Anuj Kumar, Aman Kumar, Harish Chandra Arora, and Hashem Jahangir. "Quantum Computing for Indoor Environmental Quality." In Advances in Systems Analysis, Software Engineering, and High Performance Computing. IGI Global, 2023. http://dx.doi.org/10.4018/978-1-6684-6697-1.ch011.

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Quantum computing (QC) is founded on the principles of quantum entanglement and the superposition of matter. It employs advanced computation techniques rather than conventional ones. To circumvent the limitations of conventional computing, new supercomputers employ quantum mechanics knowledge, which allows for the coherence of ones and zeros. Several fields like finance, healthcare, cybersecurity, transportation, climate change, and many more are taking advantage of QC. Indoor environmental quality (IEQ) is also one of the sectors that can benefit enormously with QC. The IEQ contains several p
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Lu, S. I. "The accuracy of diffusion quantum l\fonte Carlo simulations in the determination of molecular equilibrium structures." In Quantum Monte Carlo. Oxford University PressNew York, NY, 2007. http://dx.doi.org/10.1093/oso/9780195310108.003.00154.

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Abstract Results of fixed-node diffusion QMC calculations for 17 small molecules made up of atoms H, C, N, 0, and F were compared in this paper to experimental values for atomization energies, bond lengths, and bond angles, as well as corresponding values from coupled cluster calculations. The QMC calculations were of the Ornstein-Uhlenbeck type,a with trial functions for importance sampling and node locations based on linear combinations of determinants with molecular orbitals composed of floating spherical Gaussian orbitals. Initial geometries were taken from density functional calculations
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Nekovee,, M., W. M. C. Foulkes, and R. J. Needs. "Quantum Monte Carlo studies of density functional theory." In Quantum Monte Carlo. Oxford University PressNew York, NY, 2007. http://dx.doi.org/10.1093/oso/9780195310108.003.00145.

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Abstract It is difficult to imagine that density functional theory (DFT) could be useful in improving quantum Monte Carlo methods, but it is easy to imagine that QMC could be useful in improving density functional methods. Since QMC can produce accurate wavefunctions and since wavefunctions lead to all other properties one should be able, in principle, to use QMC to predict the exchangecorrelation energy functional Exc[n(r)], the key (unknown) quantity required in DFT. In practice, that is not so easy, but this paper shows how QMC can take steps in that direction by providing insights gained f
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Mcmillan, W. L. "Ground state of liquid 4He." In Quantum Monte Carlo. Oxford University PressNew York, NY, 2007. http://dx.doi.org/10.1093/oso/9780195310108.003.0005.

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Abstract One of the earliest uses of Metropolis samplinga in variational QMC calculations was not in an electronic structure problem, but in the calculation of the energy of a sample of liquid helium in which the atoms were treated as single particles. The interaction among the atoms was specified as a pairwise-additive Lennard-Jones 6-12 potential, which is a rather good approximation in this case. The trial wavefunction was a product form of the type Πi&amp;lt;j f(rij ), with f(r) = exp [-(a1/r)a 2] and variable parameters a1 and a2 . The ground-state wavefunction for this collection of boso
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Streszczenia konferencji na temat "QTc parameters"

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Weintritt, Donald J. "QA/QC Parameters for Produced Waste Water - Operations versus Regulatory Compliance." In CORROSION 1993. NACE International, 1993. https://doi.org/10.5006/c1993-93162.

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Abstract The level of QC for sampling and testing produced waste water for operations has several levels: monitoring, special tests, litigation and regulatory requirements. Points to consider in setting requirements for each of these situations are discussed. Because of the non-uniform nature of oilfield waste waters, special attention is focused on sampling in the field and again in the laboratory as the major source of total variance regardless of the end use of the data.
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Ghasemi, Mehrdad, Hassan Kaatuzian, Houshyar Noshad, and Mahdi NoroozOliaei. "Quantum Photonic Computer Challenges: Quantum Decoherence, Quantum Error Correction (QEC), and Scalability." In Frontiers in Optics. Optica Publishing Group, 2024. https://doi.org/10.1364/fio.2024.jd4a.42.

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The error correction process in quantum photonic computers (QPCs) and their loss in photons are two important parameters of considering them as reliable devices for computing very large and complicated problems concerning classical computers. In this paper, the new promising algorithms have been discussed for employment in quantum photonic computers as robust and reliable computational tasks to define the best fidelity as a figure of merit in quantum error correction schemes. Furthermore, a parametric study has been done by adding noble metals to the Integrated Photonic Chip.
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Murray, John N. "A Re-investigation of the Testing Parameters for Evaluating the Initial Electrochemical Characteristics of Indium Activated, Aluminum Alloy, Sacrificial Anodes." In CORROSION 2004. NACE International, 2004. https://doi.org/10.5006/c2004-04098.

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Abstract There are a variety of electrochemical (EC) tests that have been published for characterizing aluminum alloy materials for sacrificial anode applications. This paper expands on a previously disclosed 20 hour QA/QC test method. New data are presented regarding the effects of type, concentration and pH of the test electrolyte, the extent of the influence of the freshly formed oxide film as well as the surface roughness on the EC test results. Evidence of the mal-distribution of the alloy chemistry is also presented and discussed.
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Ebrahimi, Nafiseh, Jieying Zhang, Istemi Ozkan, and Hamidreza Shirkhani. "Effect of Environmental Parameters on Atmospheric Corrosion of Carbon Steel Infrastructures in Montreal, Qc, Canada: past, Current and Future Scenarios." In CONFERENCE 2022. AMPP, 2022. https://doi.org/10.5006/c2022-17819.

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Abstract Atmospheric corrosion plays a critical role in structural metal loss and thus infrastructure service life. Since the 1920's, many studies have focused on the effect of environmental parameters on the corrosion of major construction metals and it has been shown that chlorides, pollutants in the air such as sulfur dioxide, temperature, and relative humidity are the main environmental factors affecting the corrosion rate. Several studies have come up with a dose response function to predict the corrosion rate of a specific metal based on the environmental factors it is exposed to. The pr
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Partridge, Paul. "Multi-Layer Pipeline Coating Systems: a New Look at the Evaluation of Certain QC Tests and Critical Application Parameters for FBE Primers." In CORROSION 2006. NACE International, 2006. https://doi.org/10.5006/c2006-06053.

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Abstract Advancing technologies for pipeline construction techniques and increasingly severe operating parameters present challenges for pipeline coatings. Multi-layer coatings have evolved to increase the mechanical toughness of the system, to provide corrosion protection at elevated temperatures, to provide specific surface textures, to provide a foundation for insulation systems, and to accept the rigors of specific construction techniques. Qualification test methods must give assurance that the basic system has the ability to survive the operating conditions after construction. Quality con
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Turkalj, Tomás, Sebastian Cravero, and Gustavo Kissner. "Pipe Burst Pressure Estimation in Sour Environment Using Constant Load Fracture Toughness Tests." In CORROSION 2019. NACE International, 2019. https://doi.org/10.5006/c2019-13022.

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Abstract Sulfide stress cracking has special importance in the Oil and Gas (O&amp;G) industry due to the considerable amount of hydrogen sulfide that may be present in the processed fluids. Furthermore, the increasing interest of the O&amp;G industry on high grade tubulars to work at high pressure, makes the sulfide stress cracking phenomenon an important issue in the safe operational condition assessment of Oil Country Tubular Goods (OCTG). Consequently, the adequate determination of fracture toughness value (i.e.: K-mat) is of fundamental importance for fitness for purpose evaluation. Partic
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Letort, Voronique, Paul Mahe, Paul-Henry Cournede, Philippe De Reffye, and Brigitte Courtois. "Optimizing Plant Growth Model Parameters for Genetic Selection Based on QTL Mapping." In 2006 Second International Symposium on Plant Growth Modeling, Simulation, Visualization and Applications. IEEE, 2006. http://dx.doi.org/10.1109/pma.2006.35.

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Prom-on, Santitham, and Yi Xu. "The qTA toolkit for prosody: learning underlying parameters of communicative functions through modeling." In Speech Prosody 2010. ISCA, 2010. http://dx.doi.org/10.21437/speechprosody.2010-202.

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Hagiwara, Naoto, and Noritake Oguchi. "Fatigue Behavior of Line Pipes Subjected to Severe Mechanical Damage." In 1998 2nd International Pipeline Conference. American Society of Mechanical Engineers, 1998. http://dx.doi.org/10.1115/ipc1998-2035.

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Fatigue tests were carried out on ERW line pipes 200 mm and 300 mm in diameter with a severe gouge in dent type defect. Hoop stress fluctuation between 15% and 30% of the yield stress of the pipe materials was applied by cyclic internal pressure loading. By the parameter Q, a function of defect size and fracture toughness, fatigue behavior could have been well explained. Fatigue behavior differed above and below the threshold Q (Qth. When Q&lt;Qth, crack propagation was initially associated with ductile crack growth, and therefore, fatigue life, Nf, decreased to less than 1000 cycles. On the c
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Zimmer, Ulrich, and Mark Boyd. "The need for quantitative QC parameters for microseismic event identifications and locations." In SEG Technical Program Expanded Abstracts 2013. Society of Exploration Geophysicists, 2013. http://dx.doi.org/10.1190/segam2013-0120.1.

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Raporty organizacyjne na temat "QTc parameters"

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Hulata, Gideon, and Graham A. E. Gall. Breed Improvement of Tilapia: Selective Breeding for Cold Tolerance and for Growth Rate in Fresh and Saline Water. United States Department of Agriculture, 2003. http://dx.doi.org/10.32747/2003.7586478.bard.

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The main objective of this project was to initiate a breeding program to produce cold-tolerant and salinity-tolerant synthetic breeds of tilapia, from a base population consisting of a four-species hybrid population created under an earlier BARD project. A secondary objective was to estimate genetic parameters for the traits growth rate under fresh- and salt-water and for cold tolerance. A third objective was to place quantitative trait loci that affect these traits of interest (e.g., growth rate in fresh-water, salt-water and cold tolerance) on the growing linkage map of primarily microsatell
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Lee, Jusang, John E. Haddock, Dario D. Batioja Alvarez, and Reyhaneh Rahbar Rastegar. Quality Control and Quality Assurance of Asphalt Mixtures Using Laboratory Rutting and Cracking Tests. Purdue University, 2019. http://dx.doi.org/10.5703/1288284317087.

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The main objectives of this project were to review the available balanced-mix design (BMD) methodologies, understand the I-FIT and Hamburg Wheel Tracking Test (HWTT) test methods using INDOT asphalt mixtures, and to explore the application of these tests to both a BMD approach and as performance-related Quality Control (QC) and Quality Acceptance (QA) methods. Two QA mixture specimen types, plant-mixed laboratory-compacted (PMLC) and plant-mixed field-compacted (PMFC) were used in the determination of cracking and rutting parameters. Distribution functions for the flexibility index (FI) values
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Farahbod, A. M., and J. F. Cassidy. An overview of seismic attenuation in the Eastern Canadian Arctic and the Hudson Bay Complex, Manitoba, Newfoundland and Labrador, Nunavut, Ontario, and Quebec. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/330396.

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In this study we investigated coda-wave attenuation (QC) from the eastern Canadian Arctic in Nunavut and the Hudson Bay complex including portions of northern Manitoba, Ontario, Quebec and Labrador. We used earthquake recordings from 15 broadband and 3 short period seismograph stations of the Canadian National Seismic Network (CNSN) and 29 broadband stations of the POLARIS network across the region. Our dataset is comprised of 637 earthquakes recorded between 1985 and 2021 with magnitudes ranging from 1.3 to 6.1, depths from 0 to 20 km and epicentral distances of 5 to 100 km. This gives a tota
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Farahbod, A. M., and J. F. Cassidy. An overview of seismic attenuation in the Northern Appalachians Seismic Zone, New Brunswick and Nova Scotia. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/329702.

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In this study we investigated coda-wave attenuation (QC) from the northern Appalachian region of eastern Canada in the two provinces of New Brunswick and Nova Scotia. We used earthquake recordings from 8 broadband and 2 short period seismograph stations of the Canadian National Seismograph Network (CNSN) across the region. Our dataset is comprised of 476 earthquakes recorded between 1983 and 2021 with magnitudes ranging from 1.5 to 4.1, depths from 0 to 20 km (with the vast majority being &amp;amp;lt;10 km) and epicentral distances of 5 to 100 km. This gives a total of 261 high signalto- noise
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Paterson, Andrew H., Yehoshua Saranga, and Dan Yakir. Improving Productivity of Cotton (Gossypsum spp.) in Arid Region Agriculture: An Integrated Physiological/Genetic Approach. United States Department of Agriculture, 1999. http://dx.doi.org/10.32747/1999.7573066.bard.

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Objectives: We seek to establish the basis for improving cotton productivity under arid conditions, by studying the water use efficiency - evaporative cooling interrelationship. Specifically, we will test the hypothesis that cotton productivity under arid conditions can be improved by combining high seasonal WUE with efficient evaporative cooling, evaluate whether high WUE and/or evaporative cooling are based on specific physiological factors such as diurnal flexibility in stomatal conductance, stomatal density, photosynthetic capacity, chlorophyll fluorescence, and plant water status. Genes i
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Farahbod, A. M., and J. F. Cassidy. An overview of seismic attenuation in the Charlevoix Seismic Zone, southern Quebec. Natural Resources Canada/CMSS/Information Management, 2023. http://dx.doi.org/10.4095/332158.

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We investigate seismic attenuation characteristics of the Charlevoix Seismic Zone. This zone is located ~100 km downstream from Quebec City and is the most seismically active region of eastern Canada. We used earthquake recordings from 8 seismograph stations of the Canadian National Seismic Network (CNSN) across the region. Our dataset is comprised of 584 earthquakes recorded between 1992 and 2022 with magnitudes ranging from 2.0 to 5.4, depths from 0 to 30 km and epicentral distances of 5 to 100 km. This gives a total of 1490 high signal-to-noise (S/N) traces (S/N?5.0) useful for QC calculati
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Farahbod, A., and J. F. Cassidy. Spatial and temporal variations in seismic coda Q attenuation in the lower St. Lawrence region, southeastern Quebec. Natural Resources Canada/CMSS/Information Management, 2023. http://dx.doi.org/10.4095/332027.

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We investigate seismic attenuation characteristics of the Lower St. Lawrence seismic zone in southeastern Quebec. This zone is located ~400 km downstream from Quebec City and is between the Quebec North Shore and the Lower St. Lawrence. We used earthquake recordings from 5 broadband and 5 short period seismograph stations of the Canadian National Seismic Network (CNSN) across the region. Our dataset is comprised of 847 earthquakes recorded between 1985 and 2022 with magnitudes ranging from 2.0 to 5.1, depths from 0 to 30 km and epicentral distances of 5 to 100 km. This gives a total of 446 hig
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Wei, Fulu, Ce Wang, Xiangxi Tian, Shuo Li, and Jie Shan. Investigation of Durability and Performance of High Friction Surface Treatment. Purdue University, 2021. http://dx.doi.org/10.5703/1288284317281.

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The Indiana Department of Transportation (INDOT) completed a total of 25 high friction surface treatment (HFST) projects across the state in 2018. This research study attempted to investigate the durability and performance of HFST in terms of its HFST-pavement system integrity and surface friction performance. Laboratory tests were conducted to determine the physical and mechanical properties of epoxy-bauxite mortar. Field inspections were carried out to identify site conditions and common early HFST distresses. Cyclic loading test and finite element method (FEM) analysis were performed to eva
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