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Journal articles on the topic 'Quantification semi-classique de la corde'

Author: Grafiati

Published: 4 June 2021

Last updated: 6 February 2022

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1

Mihaljevic, Nikola, Slobodan Jovanovic, and Aleksandar Dlabac. "A generalized mathematical model for efficiency calibration of gamma detectors: Application to practical cases." Nuclear Technology and Radiation Protection 34, no. 1 (2019): 34–46. http://dx.doi.org/10.2298/ntrp181031006m.

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Efficiency calibration, i. e. determination of detection efficiency, ?p, is a crucial issue in gamma spectrometry (quantification of gamma spectroscopic measurements) with semiconductor and scintillation detectors. Comparing three possible ways to addressing the problem ? relative, absolute and semi empirical ? advantages of the latter are emphasized. Among semi empirical models, efficiency transfer using effective solid angles, ??, is sorted out and briefly elaborated. This approach reduces the problem of efficiency calibration to the determination of ??. It proved reliable and has been broad

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2

Gulbis, Béatrice, Faustin Kagambega, Léon Tshilolo, and Françoise Vertongen. "Globin Chains Analysis: Improved Resolution by Electrophoresis in Urea—Acetic Acid—Triton X-100." Annals of Clinical Biochemistry: International Journal of Laboratory Medicine 35, no. 3 (1998): 415–17. http://dx.doi.org/10.1177/000456329803500311.

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To improve the resolution and rapidity of globin chains separation, we have modified the basic technique of globin chain electrophoresis in urea—acetic acid—Triton X-100. Haemolysates from anticoagulated cord or adult blood samples were submitted to urea—acetic acid-Triton X-100 Polyacrylamide gel electrophoresis using a 15% Polyacrylamide gel cast in a mini slab cell which allows a rapid analysis of globin chains samples. After staining proteins with Coomassie brilliant blue R-250, the relative amounts of globin chains were determined by scanning. This new procedure has allowed us to obtain a

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3

Piety, Nathaniel Z., Xiaoxi Yang, Bogdan R. Dinu, Alex George, and Sergey S. Shevkoplyas. "Paper-Based Assay for Quantification of HbS in Blood of Sickle Cell Disease Patients." Blood 124, no. 21 (2014): 1371. http://dx.doi.org/10.1182/blood.v124.21.1371.1371.

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Abstract Introduction: Sickle cell disease (SCD) is a common inherited blood disorder caused by sickle hemoglobin (HbS) which, unlike normal adult hemoglobin (HbA), becomes insoluble and polymerizes under hypoxic conditions. Patients with SCD experience chronic hemolytic anemia, episodic pain crises and abnormal blood flow to critical organs that cumulatively result in significant illness and shortened lifespans for many. The severity of SCD varies significantly between patients, but for individuals the rate of adverse events is strongly correlated with intraerythrocytic concentration of HbS (

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4

Bouheniche, Salaheddine, and Bénina Touaibia. "Modélisation numérique du transport solide du système « barrage - cours d’eau, transport - déposition » : cas du barrage de Sidi Mohamed Ben Aouda (SMBA) sur l’oued Mina, en zone semi-aride." Revue des sciences de l’eau 26, no. 1 (2013): 21–31. http://dx.doi.org/10.7202/1014916ar.

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Résumé Les besoins en eau, en perpétuelle croissance, nécessitent une mobilisation des eaux de surface. La construction de barrages, menacés par un envasement précoce, nécessite une exploitation rationnelle, moyennant des outils d’aide à la quantification et à la prédiction des dépôts de sédiments. Ainsi, le comblement des retenues peut être simulé pour différentes périodes d’exploitation. La maîtrise du processus transport-déposition des sédiments, constitue un centre d’intérêt vers lequel convergent plusieurs approches : prédiction, modélisation stochastique et modélisations mathématique et

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Amson, Eli. "Overall Bone Structure as Assessed by Slice-by-Slice Profile." Evolutionary Biology 46, no. 4 (2019): 343–48. http://dx.doi.org/10.1007/s11692-019-09486-6.

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Abstract Quantifying the inner structure of bones is central to various analyses dealing with the phenotypic evolution of animals with an ossified skeleton. Computed tomography allows to assess the repartition of bone tissue within an entire skeletal element. Two parameters of importance for such analyses are the global compactness (Cg) and total cross-sectional area (Tt.Ar). However, no open-source, time-efficient methods are available to acquire these parameters for whole bones. A methodology to assess the variation of these parameters along a profile following one of the studied bone’s anat

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Li, Yangqiu, Qingsong Yin, Shaohua Chen та Lijian Yang. "Detection of 24 TCR Vβ-Dβ1 sjTRECs in T Cells from Cord Blood, Peripheral Blood of Normal Individuals and Patients with AML-M2." Blood 106, № 11 (2005): 4557. http://dx.doi.org/10.1182/blood.v106.11.4557.4557.

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Abstract Thymic function is characterized its importance of thymus to T-cell diversity in the periphery of both children and adults during both health and disease. The generation of TCR diversity occurs in the thymus through recombination of gene segments encoding the variable parts of the TCRα and β chains. During these processes, by-products of the rearrangements are generated in the form of signal joint T-cell receptor excision circles (sjTRECs). As sjTRECs are stable extrachromosomal DNA fragments, are not replicated during mitosis and thus diluted with each round of cell division, and are

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Schaefer, Daniel, Marianne Olsen, Ulrik Lausten-Thomsen, et al. "2% of Healthy Newborns Reveal ETV6-RUNX1 Fusion By Genomic Inverse PCR for Exploration of Ligated Breakpoints (GIPFEL)." Blood 128, no. 22 (2016): 4082. http://dx.doi.org/10.1182/blood.v128.22.4082.4082.

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Abstract Pediatric acute lymphoblastic leukemia (ALL) is characterized by preleukemic recurrent chromosomal translocations that emerge in utero. The translocation t(12;21) resulting in the formation of the chimeric transcription factor ETV6-RUNX1 is the most frequent structural aberration occurring in 25% of B-cell precursor patients. A previous study suggested that ETV6-RUNX1-positive preleukemic cells are present in every hundredth human newborn, thus exceeding the actually observed incidence of ETV6-RUNX1-positive ALL in children (1/10,000) by a factor of 100. This finding strongly indicate

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8

Fischer, Ute, Daniel Schäfer, Elisa Füller, et al. "Gipfel – a Novel Method for Unbiased Molecular ETV6-RUNX1 Screening of Healthy Newborns." Blood 124, no. 21 (2014): 5340. http://dx.doi.org/10.1182/blood.v124.21.5340.5340.

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Abstract Pediatric acute lymphoblastic leukemia (ALL) is characterized by recurrent chromosomal translocations that frequently occur in utero in preleukemic cells. The translocation t(12;21) resulting in the formation of the chimeric transcription factor ETV6-RUNX1 is the most frequent structural aberration occurring in 25% of B-cell ALL. A previous study suggested that ETV6-RUNX1 positive preleukemic cells are present in every hundredth human newborn, thus exceeding the actually observed incidence of ETV6-RUNX1 positive ALL in children by a factor of 100. This finding indicated that secondary

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9

Ermolli, I., K. Matthes, T. Dudok de Wit, et al. "Recent variability of the solar spectral irradiance and its impact on climate modelling." Atmospheric Chemistry and Physics 13, no. 8 (2013): 3945–77. http://dx.doi.org/10.5194/acp-13-3945-2013.

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Abstract. The lack of long and reliable time series of solar spectral irradiance (SSI) measurements makes an accurate quantification of solar contributions to recent climate change difficult. Whereas earlier SSI observations and models provided a qualitatively consistent picture of the SSI variability, recent measurements by the SORCE (SOlar Radiation and Climate Experiment) satellite suggest a significantly stronger variability in the ultraviolet (UV) spectral range and changes in the visible and near-infrared (NIR) bands in anti-phase with the solar cycle. A number of recent chemistry-climat

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10

Kim, Jung Hwan, Garrett W. Astary, Xiaoming Chen, Thomas H. Mareci, and Malisa Sarntinoranont. "Voxelized Model of Interstitial Transport in the Rat Spinal Cord Following Direct Infusion Into White Matter." Journal of Biomechanical Engineering 131, no. 7 (2009). http://dx.doi.org/10.1115/1.3169248.

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Direct tissue infusion, e.g., convection-enhanced delivery (CED), is a promising local delivery technique for treating diseases of the central nervous system. Predictive models of spatial drug distribution during and following direct tissue infusion are necessary for treatment optimization and planning of surgery. In this study, a 3D interstitial transport modeling approach in which tissue properties and anatomical boundaries are assigned on a voxel-by-voxel basis using tissue alignment data from diffusion tensor imaging (DTI) is presented. The modeling approach is semi-automatic and utilizes

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11

Calabria, Andrea, Stefano Beretta, Ivan Merelli та ін. "γ-TRIS: a graph-algorithm for comprehensive identification of vector genomic insertion sites". Bioinformatics, 7 жовтня 2019. http://dx.doi.org/10.1093/bioinformatics/btz747.

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Abstract Summary Retroviruses and their vector derivatives integrate semi-randomly in the genome of host cells and are inherited by their progeny as stable genetic marks. The retrieval and mapping of the sequences flanking the virus-host DNA junctions allows the identification of insertion sites in gene therapy or virally infected patients, essential for monitoring the evolution of genetically modified cells in vivo. However, since ∼30% of insertions land in low complexity or repetitive regions of the host cell genome, they cannot be correctly assigned and are currently discarded, limiting the

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12

Hahn, Artur, Julia Bode, Allen Alexander, et al. "Large-scale characterization of the microvascular geometry in development and disease by tissue clearing and quantitative ultramicroscopy." Journal of Cerebral Blood Flow & Metabolism, October 12, 2020, 0271678X2096185. http://dx.doi.org/10.1177/0271678x20961854.

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Three-dimensional assessment of optically cleared, entire organs and organisms has recently become possible by tissue clearing and selective plane illumination microscopy (“ultramicroscopy”). Resulting datasets can be highly complex, encompass over a thousand images with millions of objects and data of several gigabytes per acquisition. This constitutes a major challenge for quantitative analysis. We have developed post-processing tools to quantify millions of microvessels and their distribution in three-dimensional datasets from ultramicroscopy and demonstrate the capabilities of our pipeline

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13

Schmiester, Leonard, Daniel Weindl, and Jan Hasenauer. "Efficient gradient-based parameter estimation for dynamic models using qualitative data." Bioinformatics, July 14, 2021. http://dx.doi.org/10.1093/bioinformatics/btab512.

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Abstract Motivation Unknown parameters of dynamical models are commonly estimated from experimental data. However, while various efficient optimization and uncertainty analysis methods have been proposed for quantitative data, methods for qualitative data are rare and suffer from bad scaling and convergence. Results Here, we propose an efficient and reliable framework for estimating the parameters of ordinary differential equation models from qualitative data. In this framework, we derive a semi-analytical algorithm for gradient calculation of the optimal scaling method developed for qualitati

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14

Balbinot, Gustavo, Guijin Li, Matheus Joner Wiest, et al. "Properties of the surface electromyogram following traumatic spinal cord injury: a scoping review." Journal of NeuroEngineering and Rehabilitation 18, no. 1 (2021). http://dx.doi.org/10.1186/s12984-021-00888-2.

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AbstractTraumatic spinal cord injury (SCI) disrupts spinal and supraspinal pathways, and this process is reflected in changes in surface electromyography (sEMG). sEMG is an informative complement to current clinical testing and can capture the residual motor command in great detail—including in muscles below the level of injury with seemingly absent motor activities. In this comprehensive review, we sought to describe how the sEMG properties are changed after SCI. We conducted a systematic literature search followed by a narrative review focusing on sEMG analysis techniques and signal properti

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15

Folle, Lukas, Timo Meinderink, David Simon, et al. "Deep learning methods allow fully automated segmentation of metacarpal bones to quantify volumetric bone mineral density." Scientific Reports 11, no. 1 (2021). http://dx.doi.org/10.1038/s41598-021-89111-9.

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AbstractArthritis patients develop hand bone loss, which leads to destruction and functional impairment of the affected joints. High resolution peripheral quantitative computed tomography (HR-pQCT) allows the quantification of volumetric bone mineral density (vBMD) and bone microstructure in vivo with an isotropic voxel size of 82 micrometres. However, image-processing to obtain bone characteristics is a time-consuming process as it requires semi-automatic segmentation of the bone. In this work, a fully automatic vBMD measurement pipeline for the metacarpal (MC) bone using deep learning method

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