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Journal articles on the topic 'Localisation discrète'

Author: Grafiati

Published: 1 June 2024

Last updated: 31 July 2025

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1

Huyghe, Christine, та Tobias Schmidt. "𝒟-modules arithmétiques sur la variété de drapeaux". Journal für die reine und angewandte Mathematik (Crelles Journal) 2019, № 754 (2019): 1–15. http://dx.doi.org/10.1515/crelle-2017-0021.

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Abstract Soient p un nombre premier, V un anneau de valuation discrète complet d’inégales caractéristiques (0,p) , et G un groupe réductif et deployé sur \operatorname{Spec}V . Nous obtenons un théorème de localisation, en utilisant les distributions arithmétiques, pour le faisceau des opérateurs différentiels arithmétiques sur la variété de drapeaux formelle de G. Nous donnons une application à la cohomologie rigide pour des ouverts dans la variété de drapeaux en caractéristique p. Let p be a prime number, V a complete discrete valuation ring of unequal characteristics (0,p) , and G a connect

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Tainturier, Benoit, Vincent Gouzer, and Yan Santinelli. "Les greffes cutanées en pratique courante chez le cheval." Le Nouveau Praticien Vétérinaire équine 13, no. 48 (2019): 31–40. http://dx.doi.org/10.1051/npvequi/48031.

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Chez le cheval, les greffes de peau ont un intérêt particulier dans le traitement des plaies chroniques et/ou de grande taille, notamment sur les membres. L’objectif d’une greffe cutanée est d’accélérer la cicatrisation en augmentant le front d’épithélialisation de la plaie. Les greffes libres sont des fragments de peau prélevés dans une zone donneuse, choisie le plus souvent dans une région où la cicatrisation se fait facilement et où la cicatrice reste discrète. Les greffons obtenus doivent être préparés et conservés dans un milieu humide avant d’être implantés dans la zone receveuse. Si le

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Pérez, R., V. Puig, J. Pascual, A. Peralta, E. Landeros, and Ll Jordanas. "Pressure sensor distribution for leak detection in Barcelona water distribution network." Water Supply 9, no. 6 (2009): 715–21. http://dx.doi.org/10.2166/ws.2009.372.

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This paper proposes a leakage detection method based on detecting significant discrepancies between pressure measurements and their estimations obtained from the simulation of a calibrated water distribution network model. Every sensor in the network will allow to detect a discrepancy in pressure due to leakage depending on its location. Then, a set of well distributed pressure sensors will generate a leakage signature that allows leakage localisation. This paper presents the methodology used in the Barcelona network for distributing properly the sensors for a good discrimination in the leakag

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Cancilla, B., A. Davies, M. Ford-Perriss, and GP Risbridger. "Discrete cell- and stage-specific localisation of fibroblast growth factors and receptor expression during testis development." Journal of Endocrinology 164, no. 2 (2000): 149–59. http://dx.doi.org/10.1677/joe.0.1640149.

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Fibroblast growth factors (FGFs) are a family of heparin binding proteins involved in many biological processes. These growth factors act through tyrosine kinase receptors (FGFRs); we have previously used immunohistochemistry to study FGFRs-1-4 in foetal, immature and adult rat testes, and found a discrete cell- and stage-specific localisation. Alternative mRNA splicing of FGFRs-1-3 leads to functional variants (IIIb and IIIc) with distinct ligand binding affinities, therefore we have identified the specific expression of functional FGFR variants and the expression and localisation of FGF liga

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Amar, Patrick. "Pandæsim: An Epidemic Spreading Stochastic Simulator." Biology 9, no. 9 (2020): 299. http://dx.doi.org/10.3390/biology9090299.

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Many methods have been used to model epidemic spreading. They include ordinary differential equation systems for globally homogeneous environments and partial differential equation systems to take into account spatial localisation and inhomogeneity. Stochastic differential equations systems have been used to model the inherent stochasticity of epidemic spreading processes. In our case study, we wanted to model the numbers of individuals in different states of the disease, and their locations in the country. Among the many existing methods we used our own variant of the well known Gillespie sto

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Sulis, Silvia, Anar Rakhimzhanova, and Michele Brun. "Filtering Properties of Discrete and Continuous Elastic Systems in Series and Parallel." Applied Sciences 12, no. 8 (2022): 3832. http://dx.doi.org/10.3390/app12083832.

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Filtering properties and local energy distribution in different classes of periodic micro-structured elastic systems are analysed in this work. Out-of-plane wave propagation is considered in continuous and discrete elastic systems arranged in series and parallel. Filtering properties are determined from the analysis of dispersion diagrams and energy distribution within different phases in the representative unit cell. These are determined analytically by implementing a transfer matrix formalism. The analysis given in the work indicates quantitatively how to couple phases, having discrete and c

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Zhang, Renyuan, and Kai Cai. "Supervisor localisation for large-scale discrete-event systems under partial observation." International Journal of Control 93, no. 3 (2018): 387–99. http://dx.doi.org/10.1080/00207179.2018.1471220.

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Ramasamy, Karthik, Stephen Schey, Ghulam J. Mufti, Farzin Farzaneh, and Yolanda Calle. "Hepatocyte Growth Factor Expression in Bone Marrow Microenvironment Is Critical for Progression of MGUS to Myeloma." Blood 110, no. 11 (2007): 4766. http://dx.doi.org/10.1182/blood.v110.11.4766.4766.

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Abstract Hepatocyte growth factor (HGF) augments proliferation, survival and increases migration of plasma cells in vitro and in addition it induces haemangiogeneis and lymphangiogenesis. C-met (HGF receptor) is expressed on plasma cells and HGF is constitutively elevated in serum of patients with myeloma (MM) and MGUS patients. We investigated the distribution of HGF in bone marrow biopsies to better understand its role in progression of monoclonal gammopathy. Materials and methods: Bone marrow trephines were analysed by immunohistochemistry of paraffin embedded bone marrow (BM) trephine spec

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Li, Yanfang, Ki-Eun Park, and Ryan A. Cabot. "Dynamic changes in nuclear import of a nuclear localisation signal-bearing substrate in 8-cell stage porcine embryos." Reproduction, Fertility and Development 27, no. 2 (2015): 385. http://dx.doi.org/10.1071/rd13205.

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Coordinated intracellular trafficking is critically important for proper timing of major cellular events during embryogenesis. Nuclear import mediated by the karyopherin α/β (importin α/β) heterodimer is perhaps the best characterised nuclear trafficking system in eukaryotic cells. Seven karyopherin α subtypes have been identified in the domestic pig, and although each karyopherin α subtype transports proteins bearing classical nuclear localisation signals (NLSs), individual karyopherin α subtypes have been shown to preferentially transport specific cargoes. The aim of the present study was to

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Garstecki, Andrzej, Anna Knitter-Piatkowska, Zbigniew Pozorski, and Krzysztof Ziopaja. "DAMAGE DETECTION USING PARAMETER DEPENDENT DYNAMIC EXPERIMENTS AND WAVELET TRANSFORMATION." JOURNAL OF CIVIL ENGINEERING AND MANAGEMENT 10, no. 3 (2004): 191–97. http://dx.doi.org/10.3846/13923730.2004.9636306.

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The paper deals with a class of problems, where localised damage is detected using static and dynamic tests. Response of a structure is analysed employing discrete wavelet transformation as a tool for signal processing. The localised damage in beam structures was modelled as bending stiffness reduction. The efficiency of static and dynamic tests is studied. The minimal number of experimental measurement data and the precision of measurements required for the successful damage localisation is discussed by several numerical examples.

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11

Hu, Gangyi, Shaojie Chen, Chaofeng Chen, Shuangmiao Zhai, and Shaoping Zhou. "An improved discrete elliptic imaging algorithm based on guided waves for defect localisation in curved plates." Insight - Non-Destructive Testing and Condition Monitoring 61, no. 11 (2019): 656–62. http://dx.doi.org/10.1784/insi.2019.61.11.656.

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Many effective image-based algorithms are available for detecting and locating defects in flat plate-like structures. However, there are few studies on image-based algorithms for curved plate structures. An improved method is proposed in this article, which is based on the discrete elliptic imaging algorithm and the improved signal normalisation method. To verify its effectiveness, experiments using a circular array are conducted on curved plates with different degrees of bending. The experimental results show that the improved method can accurately locate defects in curved plates and, compare

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Pramanik, S., and L. Satish. "Localisation of discrete change in a transformer winding: a network-function-loci approach." IET Electric Power Applications 5, no. 6 (2011): 540. http://dx.doi.org/10.1049/iet-epa.2010.0197.

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Camp-Dotlic, E., D. Froiland, K. L. Kind, H. Irving-Rodgers, J. G. Thompson та D. L. Russell. "304. Murine HIF-1α localisation by immunohistochemistry in a mouse reproductive tissue". Reproduction, Fertility and Development 17, № 9 (2005): 129. http://dx.doi.org/10.1071/srb05abs304.

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Hypoxia-inducible factors (HIFs) are heterodimeric transcription factors consisting of an α and β subunit. The level of O2 within cells regulates the stability of HIF-1α and HIF-1 is considered the primary mediator of cellular responses to hypoxia, helping restore O2 homeostasis by promoting the expression of hypoxia-sensitive genes involved in cell survival, angiogenesis, cell proliferation and metabolism. There are few published studies investigating the role of HIF-1 protein in mouse tissues using immunohistochemistry, due to the lack of a reliable protocol and the inability of many commerc

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Andrew, J. P. "Coding gain and spatial localisation properties of discrete wavelet transform filters for image coding." IEE Proceedings - Vision, Image, and Signal Processing 142, no. 3 (1995): 133. http://dx.doi.org/10.1049/ip-vis:19951938.

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15

Zhang, Renyuan, Kai Cai, Yongmei Gan, and W. M. Wonham. "Delay-robustness in distributed control of timed discrete-event systems based on supervisor localisation." International Journal of Control 89, no. 10 (2016): 2055–72. http://dx.doi.org/10.1080/00207179.2016.1147606.

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16

Khezzar, Zaki Aissam, Redha Benzid, Lamir Saidi, and Mostafa Kamel Smail. "Envelope Detection by Shannon Energy Calculation in DCT Domain and DFS-Based Notch Filter for Interference Mitigation in GNSS Receivers." Traitement du Signal 39, no. 3 (2022): 835–43. http://dx.doi.org/10.18280/ts.390308.

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A new pre-correlation technique to enhance the Global Navigation Satellite Systems (GNSS) receivers, against the continuous wave interferences (CWI), is presented. Accordingly, the detection and the localisation procedure are constituted of many steps. First, the discrete cosine transform (DCT) is applied on the contaminated signal. Next, the Shannon-energy envelope detector, in the DCT-domain, is accomplished. Then, all envelope magnitudes above a predefined threshold, representing the interference components, are localized in the frequency domain. The following step consists in the use of th

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Wang, Xin, Ki-Eun Park, Stephanie Koser, Shihong Liu, Luca Magnani, and Ryan A. Cabot. "KPNA7, an oocyte- and embryo-specific karyopherin?subtype, is required for porcine embryo development." Reproduction, Fertility and Development 24, no. 2 (2012): 382. http://dx.doi.org/10.1071/rd11119.

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Coordinated partitioning of intracellular cargoes between nuclear and cytoplasmic compartments is critical for cell survival and differentiation. The karyopherin α/β heterodimer functions to import cytoplasmic proteins that possess classical nuclear localisation signals into the nucleus. Seven karyopherin α subtypes have been identified in mammals. The aim of this study was to determine the relative abundance of transcripts encoding seven karyopherin α subtypes in porcine oocytes and embryos at discrete stages of cleavage development, and to determine the developmental requirements of karypoph

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Wilkinson, C. R. M., M. Penny, G. McGurk, M. Wallace, and C. Gordon. "The 26S proteasome of the fission yeast Schizosaccharomyces pombe." Philosophical Transactions of the Royal Society of London. Series B: Biological Sciences 354, no. 1389 (1999): 1523–32. http://dx.doi.org/10.1098/rstb.1999.0496.

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The 26S proteasome is the multiprotein complex that degrades proteins that have been marked for destruction by the ubiquitin pathway. It is made up of two multisubunit complexes, the 20S catalytic core and the 19S regulatory complex. We describe the isolation and characterisation of conditional mutants in the regulatory complex and their use to investigate interactions between different subunits. In addition we have investigated the localisation of the 26S proteasome in fission yeast, by immunofluoresence in fixed cells and live cells using a GFP tagged subunit. Surprisingly we find that in mi

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Scott, V., T. Sherwin, and K. Gull. "gamma-tubulin in trypanosomes: molecular characterisation and localisation to multiple and diverse microtubule organising centres." Journal of Cell Science 110, no. 2 (1997): 157–68. http://dx.doi.org/10.1242/jcs.110.2.157.

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A genomic clone from Trypanosoma brucei, which contains a full length gamma-tubulin gene, was isolated using degenerate oligonucleotide primers. The sequence of this clone predicts a protein of 447 amino acids having a high degree of homology with gamma-tubulins from human and Xenopus laevis (67.2% amino acid identity) and only 57.7% identity with the Plasmodium falciparum gamma-tubulin. Northern blot analysis of poly(A)+ selected RNA from a procyclic culture detects a major transcript of approximately 2.2 kb plus a minor transcript of approximately 3.6 kb. A fusion protein comprising almost t

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Mouilleron, Stephane, Neil McDonald, and Neil McDonald. "Molecular Analysis of a G-actin Sensor." Acta Crystallographica Section A Foundations and Advances 70, a1 (2014): C1168. http://dx.doi.org/10.1107/s2053273314088317.

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Actin dynamics control many aspects of cell shape and cell motility through regulatory interactions with a large variety of actin-binding proteins. Signalling to these actin regulators frequently involves a Rho GTPase-stimulated pathway that leads to a dramatic fluctuation in the levels of monomeric actin (G-actin) following polymerisation to F-actin. Recent studies have identified a molecular G-actin sensor called the RPEL domain that links RPEL-containing proteins and their subcellular localisation to actin dynamics. The RPEL domain contains a tandem array of typically three RPEL motifs, eac

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Jullien, Denis, Paola Vagnarelli, William C. Earnshaw, and Yasuhisa Adachi. "Kinetochore localisation of the DNA damage response component 53BP1 during mitosis." Journal of Cell Science 115, no. 1 (2002): 71–79. http://dx.doi.org/10.1242/jcs.115.1.71.

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53BP1 is a vertebrate BRCT motif protein, originally described as a direct interactor of p53, which has recently been shown to be implicated in the early response to DNA damage. Upon DNA damage, 53BP1 re-localises to discrete nuclear foci that are thought to represent sites of DNA lesions and becomes hyperphosphorylated. Several observations suggest that 53BP1 is a direct substrate for the ataxia telangiectasia mutated (ATM) kinase. So far, 53BP1 behaviour during mitosis has not been reported in detail. We have examined 53BP1 subcellular distribution in mitotic cells using several antibodies a

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Viot, P., R. Bouix, I. Iordanoff, and J. L. Lataillade. "Deformation localisation modelling of polymer foam microstructure under compression: A new approach by discrete element modelling." Composite Structures 92, no. 2 (2010): 585–92. http://dx.doi.org/10.1016/j.compstruct.2009.09.008.

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Alamdari, Mehrisadat Makki, Jian Chun Li, and Bijan Samali. "A Novel FRF-Based Damage Localisation Method Using Random Vibration." Applied Mechanics and Materials 553 (May 2014): 713–18. http://dx.doi.org/10.4028/www.scientific.net/amm.553.713.

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This paper presents a novel damage localization method based on the measured Frequency Response Functions (FRFs) without demanding any previous data records of the structure in its healthy state. The main innovation of this study starts with reconstruction of FRFs curvature to develop spatial shape functions. It is demonstrated that reconstructed data significantly magnifies the influence of low-frequency spectra in damage detection procedure which is considered the milestone of this approach as excitation of the higher frequencies is not easy to obtain in most practical applications. The modi

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Shehin, A. U., and Deepa Sankar. "Copy Move Forgery detection and localisation robust to rotation using block based Discrete Cosine Transform and eigenvalues." Journal of Visual Communication and Image Representation 99 (March 2024): 104075. http://dx.doi.org/10.1016/j.jvcir.2024.104075.

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Bremner, Andrew J., José van Velzen, and Silvia Rigato. "Multisensory hand representations in early life." Seeing and Perceiving 25 (2012): 201. http://dx.doi.org/10.1163/187847612x648305.

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Research into perceptual and cognitive development has, with notable exceptions, neglected both multisensory processes, and embodied representations. In an attempt to address these issues, I will describe our programme of research tracing the early development of multisensory representations of the hand. I will mention several studies currently being conducted in our lab, including investigations of: (i) the emergence of multisensory processes in hand localisation and ownership in early childhood, (ii) the development of categorical representation of the hand as a discrete body part, (iii) the

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Khan, Huda, Larry Lockshin, Richard Lee, and Armando Corsi. "When is it necessary to localise product packaging?" Journal of Consumer Marketing 34, no. 5 (2017): 373–83. http://dx.doi.org/10.1108/jcm-06-2016-1846.

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Purpose The common market practice by global consumer brands to create localised packaging for foreign markets conflicts with findings that cast doubt on this strategy. By examining the differential influence of standard (Western) and local (Chinese) packaging on Chinese consumers’ perceptions and choice behaviour, this study aims to examine whether this strategy is effective or even necessary. Design/methodology/approach A pre-test first identified suitable products and brands. Using a multiple methods approach, online participants in China first rated the brands and packaging of hedonic and

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Tarulli, Gerard A., Andrew J. Pask, and Marilyn B. Renfree. "Discrete Hedgehog Factor Expression and Action in the Developing Phallus." International Journal of Molecular Sciences 21, no. 4 (2020): 1237. http://dx.doi.org/10.3390/ijms21041237.

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Hypospadias is a failure of urethral closure within the penis occurring in 1 in 125 boys at birth and is increasing in frequency. While paracrine hedgehog signalling is implicated in the process of urethral closure, how these factors act on a tissue level to execute closure itself is unknown. This study aimed to understand the role of different hedgehog signalling members in urethral closure. The tammar wallaby (Macropus eugenii) provides a unique system to understand urethral closure as it allows direct treatment of developing offspring because mothers give birth to young before urethral clos

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Ali, Aziah, Wan Mimi Diyana Wan Zaki, Aini Hussain, Noramiza Hashim, and Wan Noorshahida Mohd Isa. "Vessel masking and Hough transform for optic disc localisation from retinal images." F1000Research 11 (February 14, 2022): 181. http://dx.doi.org/10.12688/f1000research.73390.1.

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Background: Retinal images can be considered as one of the reliable indicators for symptoms of many ocular diseases such as diabetic retinopathy, macular degeneration and glaucoma. By analysing and tracking changes of important structures on a retinal image, symptoms of ocular diseases can be detected in a timely manner which helps physicians plan early treatment for better disease control. One of the important landmarks on a retinal image is the optic disc (OD), which must be localised to estimate retinal vessel parameters such as vessel width and tortuosity. This paper proposes a method for

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Druckrey, A. M., K. A. Alshibli, and R. I. Al-Raoush. "Discrete particle translation gradient concept to expose strain localisation in sheared granular materials using 3D experimental kinematic measurements." Géotechnique 68, no. 2 (2018): 162–70. http://dx.doi.org/10.1680/jgeot.16.p.148.

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Gedeon, A. K., I. A. Glass, J. M. Connor, and J. C. Mulley. "Genetic localisation of MRX27 to Xq24-26 defines another discrete gene for non-specific X-linked mental retardation." American Journal of Medical Genetics 64, no. 1 (1996): 121–24. http://dx.doi.org/10.1002/(sici)1096-8628(19960712)64:1<121::aid-ajmg20>3.0.co;2-o.

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Kill, I. R. "Localisation of the Ki-67 antigen within the nucleolus. Evidence for a fibrillarin-deficient region of the dense fibrillar component." Journal of Cell Science 109, no. 6 (1996): 1253–63. http://dx.doi.org/10.1242/jcs.109.6.1253.

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The Ki-67 antigen is detected in proliferating cells in all phases of the cell division cycle. Throughout most of interphase, the Ki-67 antigen is localised within the nucleous. To learn more about the relationship between the Ki-67 antigen and the nucleolus, we have compared the distribution of Ki-67 antibodies with that of a panel of antibodies reacting with nucleolar components by confocal laser scanning microscopy of normal human dermal fibroblasts in interphase stained in a double indirect immunofluorescence assay. During early G1, the Ki-67 antigen is detected at a large number of discre

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Yang, X., K. R. Dunning, T. E. Hickey, R. J. Norman, X. Liang, and R. L. Robker. "511. THE EFFECTS OF HIGH FAT DIET ON LIPID LOCALISATION IN THE PERI-OVULATORY CUMULUS OOCYTE COMPLEX." Reproduction, Fertility and Development 21, no. 9 (2009): 110. http://dx.doi.org/10.1071/srb09abs511.

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Intracellular neutral lipids are stored in discrete droplets that are surrounded by lipid associated proteins, such as adipophilin and perilipin, which control cellular lipid metabolism by regulating the access of lipases. The role of lipids in oocyte maturation is unclear, although they have a potential role as an energy source for the oocyte and early embryo. To elucidate potential mechanisms controlling lipid utilisation in the peri-ovulatory cumulus-oocyte-complex (COC) we 1) localised lipid droplets by immunohistochemistry for adipophilin and perilipin and direct staining of neutral lipid

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Grigoriev, A. S., S. V. Danilchenko, A. I. Dmitriev, et al. "Computer simulation of steel ladle secondary lining layers effect on localisation and direction of thermal cracks propagation." NOVYE OGNEUPORY (NEW REFRACTORIES), no. 10 (November 25, 2022): 3–15. http://dx.doi.org/10.17073/1683-4518-2022-10-3-15.

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A study of crack formation in refractory lining of steel ladles during molten metal pouring into the ladle has been carried out by means of mathematical modelling.The aim of the work was to find out thermal and mechanical conditions under which cracks might initiate in lining elements and to predict the orientation and characteristic length of such cracks. Numerical investigation has been carried out using finite and discrete elements methods. Local fracture analysis was carried out with the application of criteria effectively taking into account various elementary fracture mechanisms. Typical

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Marchbank, Katie, Sarah Waters, Roland G. Roberts, Ellen Solomon, and Caroline A. Whitehouse. "MAP1B Interaction with the FW Domain of the Autophagic Receptor Nbr1 Facilitates Its Association to the Microtubule Network." International Journal of Cell Biology 2012 (2012): 1–11. http://dx.doi.org/10.1155/2012/208014.

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Selective autophagy is a process whereby specific targeted cargo proteins, aggregates, or organelles are sequestered into double-membrane-bound phagophores before fusion with the lysosome for protein degradation. It has been demonstrated that the microtubule network is important for the formation and movement of autophagosomes. Nbr1 is a selective cargo receptor that through its interaction with LC3 recruits ubiquitinated proteins for autophagic degradation. This study demonstrates an interaction between the evolutionarily conserved FW domain of Nbr1 with the microtubule-associated protein MAP

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Chowdhury, Shyama, Soumyadeep Dhar, Karen Rafferty, Amit Das, and Bhabatosh Chanda. "Robust Extraction of Text from Camera Images using Colour and Spatial Information Simultaneously." JUCS - Journal of Universal Computer Science 15, no. (18) (2009): 3325–42. https://doi.org/10.3217/jucs-015-18-3325.

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The importance and use of text extraction from camera based coloured scene images is rapidly increasing with time. Text within a camera grabbed image can contain a huge amount of meta data about that scene. Such meta data can be useful for identification, indexing and retrieval purposes. While the segmentation and recognition of text from document images is quite successful, detection of coloured scene text is a new challenge for all camera based images. Common problems for text extraction from camera based images are the lack of prior knowledge of any kind of text features such as colour, fon

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Hafoud, S., Z. Kihal, I. Naanani, et al. "Imaging of Cerebral Tuberculomas." Scholars Journal of Applied Medical Sciences 13, no. 03 (2025): 823–26. https://doi.org/10.36347/sjams.2025.v13i03.036.

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Intracranial tuberculomas represent one of the most serious localisations of tuberculosis. The most intra-parenchymal sites are the grey matter (GM)/white matter (WM) junction, the periventricular regions and the posterior cerebral fossa (a frequent site of lesions, especially for children). They may also be deeper, involving the basal ganglia, protuberance and cerebellum. In the early phase, the tuberculoma presents a discrete high signal in T1 sequence and low intense signal in T2 sequence with nodular enhancement. Non-caseating tuberculomas appear in low signal in T1 sequence and high signa

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Tyrański, Mariusz, Izabela Pasik, Jakub Michał Bujalski, Wojciech Orciuch, and Łukasz Makowski. "Computational Fluid Dynamics of Influence of Process Parameters and the Geometry of Catalyst Wires on the Ammonia Oxidation Process and Degradation of the Catalyst Gauze." Energies 15, no. 21 (2022): 8123. http://dx.doi.org/10.3390/en15218123.

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The ammonia oxidation reaction on solid platinum–rhodium gauze is a critical step in nitric acid production. As the global demand for food and fertilisers keeps steadily growing, this remains an essential reaction in the chemical industry. However, harsh conditions inside ammonia burners lead to the degradation of catalytic meshes, severely hindering this process. This manuscript is focused on two issues. The first is the influence of catalyst gauze geometry and process parameters on the efficiency of ammonia oxidation on platinum–rhodium gauze. The second investigated problem is the influence

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Jende, P., F. Nex, M. Gerke, and G. Vosselman. "FULLY AUTOMATIC FEATURE-BASED REGISTRATION OF MOBILE MAPPING AND AERIAL NADIR IMAGES FOR ENABLING THE ADJUSTMENT OF MOBILE PLATFORM LOCATIONS IN GNSS-DENIED URBAN ENVIRONMENTS." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLII-1/W1 (May 31, 2017): 317–23. http://dx.doi.org/10.5194/isprs-archives-xlii-1-w1-317-2017.

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Mobile Mapping (MM) has gained significant importance in the realm of high-resolution data acquisition techniques. MM is able to record georeferenced street-level data in a continuous (laser scanners) and/or discrete (cameras) fashion. MM’s georeferencing relies on a conjunction of Global Navigation Satellite Systems (GNSS), Inertial Measurement Units (IMU) and optionally on odometry sensors. While this technique does not pose a problem for absolute positioning in open areas, its reliability and accuracy may be diminished in urban areas where high-rise buildings and other tall objects can obst

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Van Parijs, Sofie M., Vincent M. Janik, and Paul M. Thompson. "Display-area size, tenure length, and site fidelity in the aquatically mating male harbour seal, Phoca vitulina." Canadian Journal of Zoology 78, no. 12 (2000): 2209–17. http://dx.doi.org/10.1139/z00-165.

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Previous studies of the distribution and activity of male harbour seals, Phoca vitulina, based on telemetric techniques have shown that males restrict their range at the onset of the mating season and perform vocal and dive displays. While these data illustrated broad changes in male behaviour and distribution, they were not precise enough to reveal the extent to which individual males repeatedly return to the same locations to display. In this study we used an acoustic array to localise male vocalisations. This technique provided small-scale information on male behaviour over 3 consecutive ye

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Hight, David William. "The 9th Victor de Mello lecture: reflections and speculations." Soils and Rocks 47, no. 4 (2024): e2024008824. http://dx.doi.org/10.28927/sr.2024.008824.

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The paper reviews the published literature on some aspects of fabric and particle behaviour in cohesionless soils. It uses insights from Discrete Element Modelling and Microcomputed Tomography to speculate on reasons for the difference in behaviour observed between moist tamped and sedimented sands at the same global void ratio and stress state. It is suggested that inhomogeneities in the form of macrovoids in moist tamped samples trigger localisation, collapse and the development of a local scale chain reaction. It questions whether a similar sequence applies at the field scale and whether ex

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Belli, Martina, Giulia Vigone, Valeria Merico, Carlo Alberto Redi, Silvia Garagna, and Maurizio Zuccotti. "Time-Lapse Dynamics of the Mouse Oocyte Chromatin Organisation during Meiotic Resumption." BioMed Research International 2014 (2014): 1–10. http://dx.doi.org/10.1155/2014/207357.

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In the mammalian oocyte, distinct patterns of centromeres and pericentromeric heterochromatin localisation correlate with the gamete’s developmental competence. Mouse antral oocytes display two main types of chromatin organisation: SN oocytes, with a ring of Hoechst-positive chromatin surrounding the nucleolus, and NSN oocytes lacking this ring. When matured to MII and fertilised, only SN oocytes develop beyond the 2-cell, and reach full term. To give detailed information on the dynamics of the SN or NSN chromatin during meiosis resumption, we performed a 9 hr time-lapse observation. The main

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Wang, Huanhuan, Eden Furtak-Cole, and Keith Ngan. "Estimating Mean Wind Profiles Inside Realistic Urban Canopies." Atmosphere 14, no. 1 (2022): 50. http://dx.doi.org/10.3390/atmos14010050.

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Mean wind profiles within a unit-aspect-ratio street canyon have been estimated by solving the three-dimensional Poisson equation for a set of discrete vortex sheets. The validity of this approach, which assumes inviscid vortex dynamics away from boundaries and a small nonlinear contribution to the growth of turbulent fluctuations, is tested for a series of idealised and realistic flows. In this paper, the effects of urban geometry on accuracy are examined with neutral flow over shallow, deep, asymmetric and realistic canyons, while thermal effects are investigated for a single street canyon a

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Aslan, Ayse, Hanane El-Raoui, Jack Hanson, et al. "Using Worker Position Data for Human-Driven Decision Support in Labour-Intensive Manufacturing." Sensors 23, no. 10 (2023): 4928. http://dx.doi.org/10.3390/s23104928.

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This paper provides a novel methodology for human-driven decision support for capacity allocation in labour-intensive manufacturing systems. In such systems (where output depends solely on human labour) it is essential that any changes aimed at improving productivity are informed by the workers’ actual working practices, rather than attempting to implement strategies based on an idealised representation of a theoretical production process. This paper reports how worker position data (obtained by localisation sensors) can be used as input to process mining algorithms to generate a data-driven p

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Xue, D., X. Lü, and G. Buscarnera. "Length scale of nonlocal gradient regularisation inferred from DEM virtual experiments." Géotechnique Letters 15, no. 3 (2025): 1–6. https://doi.org/10.1680/jgele.24.00164.

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Nonlocal gradient continua are a reliable way to regularise numerical models of boundary value problems affected by strain localisation. However, the determination of the additional parameters of such formulations, including those controlling the length scale of potential shear bands, is not straightforward, in that it is affected by the interplay among stress–strain relations and shear band morphology. To address this challenge, this study proposes a parameter determination strategy for a nonlocal gradient strain-softening Mohr–Coulomb model based on discrete-element (DEM) virtual biaxial tes

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Bebikhov, Y. V., M. N. Semenova, D. U. Abdullina, E. K. Naumov, and S. V. Dmitriev. "Discrete breezers in a three-dimensional lattice with a Fermi-Pasta-Ulam-Zingou potential." Vestnik of North-Eastern Federal University 21, no. 3 (2024): 39–49. https://doi.org/10.25587/2222-5404-2024-21-3-39-49.

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The paper considers such nonlinear phenomena in condensed matter physics as Discrete Breezers (DB) and delocalised nonlinear vibrational modes (DNVM). DB are spatially localised vibrational modes of large amplitude that exist under conditions of nonlinearity of interatomic interactions and discreteness of the medium. The oscillation frequency of DB lies outside the phonon spectrum of low-amplitude crystal vibrations and does not resonate with phonons, i.e. it does not waste its energy on their excitation. DNVM are vibrational modes manifested in crystal lattices with translational symmetry, wh

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Merklein, Marion, Emanuela Affronti, and Jennifer Steiner. "Numerical Investigation of Dry and Lubricated Sheet Metal Forming Processes." Key Engineering Materials 651-653 (July 2015): 1029–35. http://dx.doi.org/10.4028/www.scientific.net/kem.651-653.1029.

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The current global development towards efficient and sustainable usage of resources as well as a stronger environmental awareness motivates lubrication abandonment in metal forming. Dry forming processes accomplish besides a green production technology also a shortage in production steps and time. However, the change of the tribological conditions influences the material flow during the forming operations and has therefore to be taken into account for the design of complex sheet metal forming operations. The aim of this study is a comparison of dry and lubricated processes by numerical as well

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Daly, Donnacha, and Didier Sornette. "The Altes Family of Log-Periodic Chirplets and the Hyperbolic Chirplet Transform." Symmetry 13, no. 10 (2021): 1922. http://dx.doi.org/10.3390/sym13101922.

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This work revisits a class of biomimetically inspired waveforms introduced by R.A. Altes in the 1970s for use in sonar detection. Similar to the chirps used for echolocation by bats and dolphins, these waveforms are log-periodic oscillations, windowed by a smooth decaying envelope. Log-periodicity is associated with the deep symmetry of discrete scale invariance in physical systems. Furthermore, there is a close connection between such chirping techniques, and other useful applications such as wavelet decomposition for multi-resolution analysis. Motivated to uncover additional properties, we p

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Jana, Swadhin Chandra, Priya Dutta, Akanksha Jain, et al. "Kinesin-2 transports Orco into the olfactory cilium of Drosophila melanogaster at specific developmental stages." PLOS Genetics 17, no. 8 (2021): e1009752. http://dx.doi.org/10.1371/journal.pgen.1009752.

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The cilium, the sensing centre for the cell, displays an extensive repertoire of receptors for various cell signalling processes. The dynamic nature of ciliary signalling indicates that the ciliary entry of receptors and associated proteins must be regulated and conditional. To understand this process, we studied the ciliary localisation of the odour-receptor coreceptor (Orco), a seven-pass transmembrane protein essential for insect olfaction. Little is known about when and how Orco gets into the cilia. Here, using Drosophila melanogaster, we show that the bulk of Orco selectively enters the c

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Morse, Christina, Tracy Tabib, John Sembrat, et al. "Proliferating SPP1/MERTK-expressing macrophages in idiopathic pulmonary fibrosis." European Respiratory Journal 54, no. 2 (2019): 1802441. http://dx.doi.org/10.1183/13993003.02441-2018.

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A comprehensive understanding of the changes in gene expression in cell types involved in idiopathic pulmonary fibrosis (IPF) will shed light on the mechanisms underlying the loss of alveolar epithelial cells and development of honeycomb cysts and fibroblastic foci. We sought to understand changes in IPF lung cell transcriptomes and gain insight into innate immune aspects of pathogenesis.We investigated IPF pathogenesis using single-cell RNA-sequencing of fresh lung explants, comparing human IPF fibrotic lower lobes reflecting late disease, upper lobes reflecting early disease and normal lungs

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Goelen, Jan, Benoni Alexander, Haren Eranga Wijesinghe, et al. "Quantification of Fluid Volume and Distribution in the Paediatric Colon via Magnetic Resonance Imaging." Pharmaceutics 13, no. 10 (2021): 1729. http://dx.doi.org/10.3390/pharmaceutics13101729.

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Previous studies have used magnetic resonance imaging (MRI) to quantify the fluid in the stomach and small intestine of children, and the stomach, small intestine and colon of adults. This is the first study to quantify fluid volumes and distribution using MRI in the paediatric colon. MRI datasets from 28 fasted (aged 0–15 years) and 18 fluid-fed (aged 10–16 years) paediatric participants were acquired during routine clinical care. A series of 2D- and 3D-based software protocols were used to measure colonic fluid volume and localisation. The paediatric colon contained a mean volume of 22.5 mL

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