cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Invariant Differential Operators for Non-Compact Lie Groups: the Sp(n,R) Case
Creators: name: Dobrev, V. K.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Representation Theory (math.RT)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: In the present paper we continue the project of systematic construction of invariant differential operators on the example of the non-compact algebras sp(n,R), in detail for n=6. Our choice of these algebras is motivated by the fact that they belong to a narrow class of algebras, which we call 'conformal Lie algebras', which have very similar properties to the conformal algebras of Minkowski space-time. We give the main multiplets and the main reduced multiplets of indecomposable elementary representations for n=6, including the necessary data for all relevant invariant differential operators. In fact, this gives by reduction also the cases for n<6, since the main multiplet for fixed n coincides with one reduced case for n+1.
description: Latex2e, 27 pages, 8 figures. arXiv admin note: substantial text overlap with arXiv:0812.2690, arXiv:0812.2655
From the $Pa$st $To$ the $F$uture: Legacy Data in Small and Medium Scale “PUNCH” Experiments - a Blueprint for PUNCH and Other Disciplines
Creators: name: Stein, Lisa-Marie
name: Maas, Frank
name: Köhler, Martin
name: Lindner, Axel
name: Meloni, Federico
name: Schörner, Thomas
name: Schwarz, Kilian
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2023

description: HMC Welcome Meeting, online, online, 4 Apr 2023 - 4 Apr 2023
The Effect of Breastfeeding Difficulties and Associated Supports on Postpartum Depression: a mixed-methods study
Creators: name: Chaput, Kathleen Helen
Publisher: name: Graduate Studies
Year: 2013
Subjects: subject: Epidemiology
subject: Postpartum depression
subject: Breastfeeding
subject: Supports and Services

description: Introduction: Postpartum depression (PPD) is the most common complication of pregnancy in Canada, affecting 10% to 15% of mothers. Depression interferes with parenting ability, putting children at increased risk of developmental and cognitive delays, abuse, neglect, addiction and emotional problems. Current strategies for managing PPD in Alberta include postpartum screening and treatment programs, which are problematic, because depressed women are only identified after depression onset. In order to develop preventive strategies for PPD, identification of its modifiable causes is needed. A link between breastfeeding difficulties and PPD has been established, and there is evidence that initiatives intended to promote breastfeeding may place stress on new mothers, and contribute to PPD risk. Hypotheses: The current study measures and describes the association between breastfeeding difficulties, support for breastfeeding and PPD, and hypothesizes that: Breastfeeding difficulties are a significant cause of PPD; and that breastfeeding supports modify a woman's risk of PPD. Method: A prospective cohort study of 425 women was conducted. Mothers intending to breastfeed were recruited within 72 hours of delivering a full-term, singleton infant in Calgary. Paper and online questionnaires were administered at delivery, six weeks and six months postpartum and measured breastfeeding difficulties, experience with breastfeeding supports and PPD. Results: Breastfeeding difficulties were common, reported by 87% of women. A qualitative assessment revealed 4 parameters of negative experiences with breastfeeding support: 1. Lack of knowledge/expertise, 2. Insensitivity/pressure, 3. Ineffective advice/suggestions and 4. Unwanted/unsolicited help. Among women who reported having a negative experience with breastfeeding support, those with breastfeeding difficulties were at 2.74 times higher risk of PPD than those without breastfeeding difficulties (RR=2.74, p=0.04). Among women who had positive experiences with breastfeeding supports, those with breastfeeding difficulties were at decreased risk of PPD (RR=0.36, p=0.042). Conclusion: The quality of breastfeeding support is important not only for breastfeeding outcomes, but also for maternal mental health. Educating front-line care providers, peer and informal supporters about the parameters of positive and negative breastfeeding support experiences and the importance of their role in maternal mental health can potentially prevent PPD, and improve maternal and child health.
Manejo clínico en TOC posnatal. A propósito de un caso.
Creators: name: Ximénez De Embún, I
name: Mantilla, M.F.
name: Roca, A
name: Torres, A
name: Izquierdo, C
name: Lera, S
name: Andrés, S
name: Garcia-Esteve, Ll
Publisher: name: Psicosomàtica y Psiquiatría
Year: 2021

description: Psicosomàtica y Psiquiatría, Núm. 11 (2019): octubre-noviembre-diciembre
The string landscape and low energy supersymmetry
Creators: name: Douglas, Michael R.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We briefly survey our present understanding of the string landscape, and use it to discuss the chances that we will see low energy supersymmetry at the LHC.
description: 27 pp, ws-rv9x6.cls (included) v2: improved section 6
title: Daniel Brélaz : municipal lausannois
title: Daniel Brélaz : municipal lausannois
titleType: AlternativeTitle
Creators: name: Nicolet, Philippe
Publisher: name: Nicolet Vidéo Productions
Year: 1990

description: Daniel Brélaz, élu conseiller national écologiste en 1979, est actuellement dans l'exécutif lausannois. Il décrit sa nouvelle fonction de municipal.
Folding Kinetics of a Polymer
Creators: name: Ruzicka, S.
name: Quigley, D.
name: Allen, M. P.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: By simulating the first order globule-crystal transition of a flexible homopolymer chain, both by collision dynamics and Monte Carlo with non-kinetic moves, we show that the effective and the thermodynamic transition temperatures are different and we propose a way of quantifying the kinetic hindering. We then also observe that the top eigenvalue in the spectrum of the dynamical (contact or adjacency) matrix provides insight into the ensembles of folding and unfolding trajectories, and may be a suitable additional reaction coordinate for the folding transition of chain molecules.
description: 4 pages, 4 figures
Induction of Antiviral Response Against Avian Infectious Laryngotracheitis Virus Infection
Creators: name: Thapa, Simrika
Publisher: name: Graduate Studies
Year: 2015
Subjects: subject: Veterinary Science
subject: Virology
subject: Immunology
subject: FOS: Clinical medicine
subject: In ovo
subject: toll-like receptor-2 and -21
subject: LTA
subject: CpG-motif containing synthetic DNA
subject: infectious laryngotracheitis virus
subject: chicken

description: Toll-like receptors (TLRs) recognize pathogen associated molecular patterns (PAMPs). The PAMPs that act as ligands for TLRs prompt downstream signalling leading to antimicrobial effects. However, the details of antiviral responses of lipotechoic acid (LTA) and CpG DNA, which act as ligands for TLR-2 and -21 respectively, elicited against avian viruses are scarce. We investigated whether in ovo delivery of LTA and CpG DNA induces antiviral responses against infectious laryngotracheitis virus (ILTV) infection in chickens. We found that in ovo delivery of these two ligands reduces ILTV infections in lungs pre- and post-hatch. However, only CpG DNA could reduce mortality and morbidity due to ILTV infection encountered post-hatch. The expression of IL-1β mRNA and increase of macrophage numbers in lungs were found to be correlates of observed antiviral responses. Thus, LTA and CpG DNA can be candidate TLR ligands worthy of further investigation for the control of ILTV infection in chickens.
Esclerosis múltiple i comorbiditat psiquiátrica.
Creators: name: Guàrdia Delgado, Armand
name: Álvarez Pedrero, Aida
name: Betriu Sabaté, Maria
name: Hervas Pujol, Mariona
name: Zabala Batista, Wanda Natali
name: Monreal Ortiz, José Antonio
name: Labad Arias, Javier
name: Palai Vidal, Diego José
Publisher: name: Psicosomàtica y Psiquiatría
Year: 2021

description: Psicosomàtica y Psiquiatría, Núm. 11 (2019): octubre-noviembre-diciembre
On elliptic solutions of nonlinear ordinary differential equations
Creators: name: Demina, Maria V.
name: Kudryashov, Nikolay A.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Exactly Solvable and Integrable Systems (nlin.SI)
subject: FOS: Physical sciences

description: The generalized Bretherton equation is studied. The classification of the meromorphic traveling wave solutions for this equation is presented. All possible exact solutions of the generalized Brethenton equation are given.
description: 9 pages
Estudio piloto de pruebas ecológicas de evaluación de funciones ejecutivas y atencionales en niños con TDAH basadas en procedimientos de ilusionismo.
Creators: name: Herrera Reyné, Joan
Publisher: name: Psicosomàtica y Psiquiatría
Year: 2021

description: Psicosomàtica y Psiquiatría, Núm. 11 (2019): octubre-noviembre-diciembre
Additional file 1 of Predicting immunoglobulin resistance in Kawasaki disease: an assessment of neutrophil to lymphocyte platelet ratio
Creators: name: Lu, Yuyao
name: Tang, Yunjia
name: Wang, Bo
name: Li, Xuan
name: Xu, Qiuqin
name: Chu, Hui
name: Lv, Haitao
name: Lu, Meihua
name: Qin, Yiming
Publisher: name: figshare
Year: 2023
Subjects: subject: Medicine
subject: Cell Biology
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Cancer
subject: Hematology
subject: Virology

description: Additional file 1. Missing values. Shows the missing data in laboratory variables.
Modification of Proton Conducting Metal-Organic Frameworks for Improved Performance in Fuel Cell Applications
Creators: name: Dawson, Karl William
Publisher: name: Graduate Studies
Year: 2013
Subjects: subject: Chemistry--Inorganic
subject: Metal-Organic Framework
subject: Fuel Cell
subject: Proton Exchange Membrane
subject: MOF
subject: Proton Conduction
subject: AC Impedance Spectroscopy
subject: Isomorphous Ligand Replacement
subject: Pore Loading
subject: Mixed Matrix Membrane

description: The use of metal-organic frameworks (MOFs) as proton conductors for practical applications is challenging, owing to the difficulties in obtaining a MOF with the desired conductivity levels and stability, and the complications of incorporating a polycrystalline powder into a device. This thesis examines these challenges, and addresses methods that could be used to improve the suitability of MOFs for commercial applications. First, an overview of the difficulties in preparing, measuring, and interpreting the data obtained from alternating current electrochemical impedance spectroscopy of MOFs is presented. Next, an examination of three potential methods of improving the performance of a proton conducting MOF, trisodium 1,3,5-trihydroxy-2,4,6-benzene trisulfonate (Na3Pgs), will be discussed. First, ligand doping of the Na3Pgs system, with 1,3,5 benzenetriphosphonic acid, was performed via a novel isomorphous ligand replacement method. The conductivity increased by an order of magnitude to (2.1 ± 0.5) x 10^-2 S/cm, which is the highest conductivity reported for any MOF system. Secondly, loading heterocycle guests into Na3Pgs improves the conductivity, but controlled loading is a relatively unexplored area, and was examined using Na3Pgs loaded with 1,2,4-triazole (Tz). It was found that Tz is incorporated into the system as the triazolium cation (HTz), giving the general formula [Na(1-x)(HTz)x]3Pgs, and that this kinetically controlled loading is affected by many synthetic parameters, but precise control over such systems is achievable. Finally, as a proof-of-principle, Na3Pgs was mixed with Nafion®, to examine whether a MOF mixed-matrix membrane could be used in a fuel cell. Homogeneous membranes were formed, and conductivity is improved under anhydrous conditions above 150°C, but a more stable MOF is required before commercial applications can be considered.
Regulation of Protein Phosphatase One During Cell Cycle
Creators: name: Nasa, Isha
Publisher: name: Graduate Studies
Year: 2016
Subjects: subject: Biochemistry
subject: Protein phosphatases
subject: Cell cycle
subject: PP1

description: Protein phosphatase 1 (PP1) is a highly conserved enzyme that controls the majority of serine/threonine (Ser/Thr) dephosphorylation reactions in eukaryotes. PP1 gains substrate specificity through binding to a large number (> 200) of regulatory proteins, which control PP1 localization, activity, and substrate interaction. PP1 recognizes the majority of these regulatory proteins via well-characterized RVxF binding motif generating hundreds of distinct PP1 holoenzymes. The main objective of this research was to uncover the regulatory mechanisms that govern the interaction of PP1 with its regulatory proteins during the cell cycle. The progression of cell cycle is largely governed by reversible protein phosphorylation. I showed that a subset of the RVxF binding motifs, in which x is a phosphorylatable amino acid (RV[S/T]F), are phosphorylated specifically during mitosis and that this phosphorylation event abrogates the interaction of PP1 with the regulatory protein. This phosphorylation is primarily governed by mitotic protein kinase Aurora B and is crucial to maintain phosphorylation of PP1 substrates during mitosis. In addition, I showed that PP1 itself dephosphorylates RVp[S/T]F motifs during mitotic exit, which allows the phosphatase to re-associate with the regulatory proteins and dephosphorylate other mitotic substrates. To gain further insight into the regulation of PP1 function in cell cycle, I characterized the novel cell cycle dependent interactome of PP1. Using quantitative mass spectrometry, I identified 113 novel RVxF containing potential PP1 binding partners including 17 mitosis-specific partners. Furthermore, using immunoblotting, I validated 9 of the PP1 interactions both in asynchronous and mitotic populations with proteins involved in cell cycle regulation (Aurora B, Aurora A, TPX2, CDCA2 (RM), TACC3, GCN2, DBC1, BRCA1 and RIF1). In addition, I demonstrated a novel interaction of PP1 with centrosomal protein, CEP192 via its ‘KHVTF’ motif. The work presented here expands our understanding of the regulation of PP1 in the cell cycle, and also suggests a novel regulatory mechanism by which the coordinated activities of Aurora B kinase and PP1 drive mitotic progression, which is crucial to maintain the genomic stability.
Surface-consistent matching filters for time-lapse processing
Creators: name: AL MUTLAQ, MAHDI
Publisher: name: Graduate Studies
Year: 2013
Subjects: subject: Geophysics
subject: FOS: Earth and related environmental sciences
subject: Surface-consistent
subject: Filter
subject: time-lapse
subject: match

description: The problem of mismatch between repeated time-lapse seismic surveys remains a challenge, particularly for land acquisition. In this dissertation, we present a new algorithm, which is an extension of the surface-consistent model, and which minimizes the mismatch between surveys, hence improving repeatability. We introduce the concept of surface-consistent matching filters (SCMF) for processing time-lapse seismic data, where matching filters are convolutional filters that minimize the sum-squared error between two signals. Since in the Fourier domain, a matching filter is the spectral ratio of the two signals, we extend the well known surface-consistent hypothesis such that the data term is a trace-by-trace spectral ratio of two datasets instead of only one (i.e. surface-consistent deconvolution). To avoid unstable division of spectra, we compute the spectral ratios in the time domain by first designing trace-sequential, least-squares matching filters, then Fourier transforming them. A subsequent least-squares solution then factors the trace-sequential matching filters into four operators: two surface-consistent (source and receiver), and two subsurface-consistent (offset and midpoint). We apply the algorithm to two datasets: a synthetic time-lapse model and field data from a CO2 monitoring site in Northern Alberta. In addition, two common time-lapse processing schemes (independent processing and simultaneous processing) are compared. We present a modification of the simultaneous processing scheme as a direct result of applying the new SCMF algorithm. The results of applying the SCMF together with the new modified simultaneous processing flow reveal the potential benefit of the method, however some challenges remain, specifically in the presence of random noise.
Hindered rolling and friction anisotropy in supported carbon nanotubes
Creators: name: Lucas, Marcel
name: Zhang, Xiaohua
name: Palaci, Ismael
name: Klinke, Christian
name: Tosatti, Erio
name: Riedo, Elisa
Publisher: name: arXiv
Year: 2012
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Carbon nanotubes (CNTs) are well known for their exceptional thermal, mechanical and electrical properties. For many CNT applications it is of the foremost importance to know their frictional properties. However, very little is known about the frictional forces between an individual nanotube and a substrate or tip. Here, we present a combined theoretical and experimental study of the frictional forces encountered by a nanosize tip sliding on top of a supported multiwall CNT along a direction parallel or transverse to the CNT axis. Surprisingly, we find a higher friction coefficient in the transverse direction compared with the parallel direction. This behaviour is explained by a simulation showing that transverse friction elicits a soft 'hindered rolling' of the tube and a frictional dissipation that is absent, or partially absent for chiral CNTs, when the tip slides parallel to the CNT axis. Our findings can help in developing better strategies for large-scale CNT assembling and sorting on a surface.
description: 8 pages, 5 figures
The effect of osmolytes on protein folding
Creators: name: Hadizadeh, Shirin
Publisher: name: University of British Columbia
Year: 2010

description: Living cells are composed of a variety of biological macromolecules such as nucleic acid, metabolites, proteins and cytoskeletal filaments as well as other particles. The fraction of the cellular interior volume that is taken by these biomolecules is about 30%, leading to a highly crowded environment. Biomolecules present in an extremely dense environment inside a cell have a completely different set of kinetic and thermodynamic behavior than in a test tube. Therefore comprehending the effect of crowding conditions on biological molecules is crucial to broad research fields such as biochemical, medical and pharmaceutical sciences. Experimentally, we are able to mimic such crowded environments; which are of more physiological relevance, by adding high concentrations of synthetic macromolecules into uncrowded buffers. Theoretically, very little attention has been paid to the effects of the dense cellular cytoplasm on biological reactions. The purpose of this work is to investigate analytically the effects of crowding agents on protein folding and stability. We present a new parameter as the measure of the polymer size, which will substitute the traditional measurements of the radius of gyration of the polymer and the end to end distance of a polymeric chain. Using this quantity we derive an expression for the free energy of the polymer which can easily be generalized to provide the free energy of a protein. This mechanism enables us to study the effect of crowding on folding and stability of a protein. The stabilization effects of the crowding particles depend on the concentration and the size of the crowders and also the type of the crowding particles that are present in the system. In our calculations the type of the crowders is controlled by the energetic parameter between the protein and surrounding macromolecules.
Enfermedad autoinmune e hidroxicloroquina como potenciales desencadenantes de tentativa de suicidio.
Creators: name: Sierra Martínez, Pilar
name: Bassa, Adriana
name: Palao, Diego J
name: Cardoner, Narcís
Publisher: name: Psicosomàtica y Psiquiatría
Year: 2021

description: Psicosomàtica y Psiquiatría, Núm. 11 (2019): octubre-noviembre-diciembre
Building a Spatial Economic Model for Caracas using PECAS
Creators: name: Fuenmayor Molero, Geraldine J.
Publisher: name: Graduate Studies
Year: 2016
Subjects: subject: Geography
subject: Sociology--Transportation
subject: Urban and Regional Planning
subject: FOS: Social and economic geography
subject: Engineering--Civil
subject: Land Use Models
subject: Spatial Economic Models
subject: PECAS
subject: Spatial Allocation
subject: Caracas
subject: Policy Sensitivity
subject: Activity Allocation
subject: Modelling poverty
subject: Sensitivity Test
subject: Spatial Markets
subject: Population Synthesizer
subject: Built Form

description: Spatial economic models provide a more holistic approach for planning and policy testing. This research explores how well PECAS - a spatial economic model developed in North America-, simulates activity allocation in the context of the rapid growth and high degree of socio-spatial segregation present in Latin America. This is answered by building and calibrating a PECAS model of Caracas, and performing policy sensitivity test with this model. The model was calibrated successfully using a modified version of the standard approach, but it could perform better regarding centrally-located slums and some non-residential spaces, with certain extensions identified as part of this research. Two policy tests were performed with the model: public housing provision and a larger increase in transit fare. The first test indicated that a modest increase in additional housing reduce rents across a range of space types. This benefited renters, but was detrimental to property owners. The second test showed that higher transit fares made households travel less, consume services closer to home with less utility, and relocate such that those out of poverty centralized (with higher rents) and those in poverty decentralized, reinforcing socio-spatial segregation. Higher transport cost benefited some businesses by increasing their market dominance, some change location and production to minimize the impact of wages. This research provides more complete documentation and demonstrates some alternative approaches for the data development and calibration of PECAS models, especially for developing countries. It also delivers some indications regarding the impacts of specific policies in the Caracas context, allowing for a better understanding of its urban system. The application of PECAS in this research brought out the issues around the interpretation of changes in rents and the repercussion for different segments of the population when poverty, high inflation, and partially unregulated developments are involved. This works also identified the potential for improvements in the theoretical formulation of PECAS, specifically in its treatment of the affinity of certain households to live in certain residential types. These would allow PECAS to become a more broadly applicable land use modelling framework for regions in both, developed and developing countries.
TEC en el tratamiento del status epiléptico refractario: a propósito de un caso.
Creators: name: Pujals, Elena
name: Palacín, Aïda
name: Gracia, Rebeca
name: Espluga, Núria
name: Martínez, Èrica
name: Pàmias, M
Publisher: name: Psicosomàtica y Psiquiatría
Year: 2021

description: Psicosomàtica y Psiquiatría, Núm. 11 (2019): octubre-noviembre-diciembre
Vortex-Induced Vibrations of a Circular Cylinder Near a Planar Wall Boundary
Creators: name: Daneshvar, Sina
Publisher: name: Graduate Studies
Year: 2017
Subjects: subject: Engineering--Mechanical
subject: Vortex-Induced Vibrations
subject: Planar Wall Boundary
subject: Particle Image Velocimetry
subject: Amplitude Response
subject: Low-Order Model

description: The amplitude response as well as the wake of a low mass ratio circular cylinder undergoing free Vortex-Induced Vibration (VIV) was investigated experimentally in a water tunnel facility. Experimental measurements of the amplitude response and Particle Image Velocimetry (PIV) measurements were conducted as part of the study. Amplitude response data were processed to compute time-averaged and fluctuating quantities. Moreover, Fourier analysis was carried out to identify the frequency content of the cylinder's oscillation. The influence of the driving parameters, namely, the reduced velocity and the gap ratio, on the system's amplitude and frequency response is elucidated. PIV realizations in the wake are used to compute time-averaged quantities, and consequently determine how the driving parameters alter the statistical quantities such as recirculation length and vortex formation length. In addition, a low-order representation (referred to as Low-Order Model, LOM) of the wake was constructed via the truncation of Galerkin expansion modes obtained from Proper Orthogonal Decomposition (POD). The LOM is used to investigate the vortex dynamics and relate the cylinder motion with vortex shedding. The circulation of the shed vortices from the cylinder is estimated to enhance the quantitative description of the vortex formation and shedding process, and to quantify how the wall boundary and the near-wall vorticity interacts with vortex shedding.
Episodi afectiu de característiques mixtes en pacient en tractament amb cabozantinib.
Creators: name: Jubert, A
name: Bassa, A
name: Guinovart, M
name: Gabernet, R
name: Segarra, A
name: Macías, O
name: Parra, I
name: Labad, X
name: Palao, D
Publisher: name: Psicosomàtica y Psiquiatría
Year: 2021

description: Psicosomàtica y Psiquiatría, Núm. 11 (2019): octubre-noviembre-diciembre
Excited state contamination in nucleon structure calculations
Creators: name: Green, Jeremy
name: Krieg, Stefan
name: Negele, John
name: Pochinsky, Andrew
name: Syritsyn, Sergey
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: Among the sources of systematic error in nucleon structure calculations is contamination from unwanted excited states. In order to measure this systematic error, we vary the operator insertion time and source-sink separation independently. We compute observables for three source-sink separations between 0.93 fm and 1.39 fm using clover-improved Wilson fermions and pion masses as low as 150 MeV. We explore the use of a two-state model fit to subtract off the contribution from excited states.
description: 7 pages, 3 figures. Talk presented at the XXIX International Symposium on Lattice Field Theory (Lattice 2011), July 10-16, 2011, Squaw Valley, Lake Tahoe, California. v2: added references
Prolactina i psicopatologia: a propòsit d'un cas.
Creators: name: Estrada, Francesc
name: Pérez, Sara
name: Llauradó, Laura
name: Montalvo, Itziar
name: Giménez-Palop, Olga
name: Labad, Javier
Publisher: name: Psicosomàtica y Psiquiatría
Year: 2021

description: Psicosomàtica y Psiquiatría, Núm. 11 (2019): octubre-noviembre-diciembre
Time-Lapse Numerical Modeling for a Carbon Capture and Storage (CCS) Project in Alberta, Using a Poroelastic Velocity-Stress Staggered-Grid Finite-Difference Method
Creators: name: Moradi, Shahin
Publisher: name: Graduate Studies
Year: 2016
Subjects: subject: Geophysics
subject: FOS: Earth and related environmental sciences
subject: Poroelastic
subject: Biot
subject: finite difference
subject: seismic forward modeling
subject: Carbon capture and storage
subject: Quest
subject: CO2 Sequestration
subject: staggered grid

description: A finite-difference algorithm was developed based on the Biot's equations of motion to model seismic wave propagation in poroelastic media. As opposed to the elastic case, in the poroelastic approach the properties of the pore fluid are taken into account in the modeling process. Poroelastic modelling could be useful in cases where the fluid content of the rock is of interest, such as Carbon Capture and Storage (CCS) projects. The developed program was then used to investigate the detectability of CO2 in a CCS project in Alberta. Two models were defined for the baseline and monitor scenarios that respectively, represented the subsurface before and after injection of CO2 and the corresponding synthetic seismic sections were generated. The difference between the calculated seismic sections for the two scenarios shows that the residual amplitude is comparable with the baseline amplitude. With this result, the injected CO2 in the Quest project over a year could be detected providing the data have good bandwidth and a high signal-to-noise ratio. Furthermore, a comparison between the poroelastic algorithm and the elastic algorithm shows that the time-lapse effect in the poroelastic case is smaller than the one in the elastic case. In the fluid saturated media, some of the wave energy is dissipated due to fluid viscosity, and the poroelastic approach helps us to take this loss into account in the modeling process.
Investigating the role of cellulose synthases in the biosynthesis and properties of cellulose in secondary cell walls
Creators: name: McDonnell, Lisa Marie
Publisher: name: University of British Columbia
Year: 2011

description: Cellulose synthases are the enzymes responsible for the production of cellulose in plant cell walls. Mutations in any one of the Arabidopsis cellulose synthase (CesA) AtCesA4, AtCesA7, and AtCesA8 genes cause plants to develop collapsed xylem as a result of reduced cellulose content, demonstrating their critical role in secondary cell wall biosynthesis. A thorough characterization of the growth, cell wall properties, and cellulose ultrastructure of the AtCesA4irx⁵-¹, AtCesA7irx³-¹, and AtCesA8irx¹-¹ mutants, presented herein, is the first report of the changes to cellulose microfibril angle, cell wall crystallinity, and cellulose degree of polymerization (DP) in these mutants. This study suggests that the non-redundant functions of individual CesAs may be related to CesA-specific thresholds required for the formation of a cellulose synthesizing complex (CSC), and CesA-specific roles in regulating crystallinity and DP. Additionally, the results illustrate the importance of a fully formed CSC in regulating cellulose microfibril angle. By identifying and characterizing three new CesA genes from spruce (Picea glauca), PgCesA1, PgCesA2, and PgCesA3, which are homologous to the Arabidopsis AtCesA8, A4, and A7 and the Populus trichocarpa PtiCesA8-A, A4, and A7-A genes, respectively, the degree of functional conservation among AtCesA homologs was explored. Expression of PgCesA1 or the PtiCesAs in AtCesAirx plants rescued the collapsed xylem phenotype, thus demonstrating for the first time that orthologs of AtCesA4, A7, and A8 have conserved functions. Lastly, in planta techniques were used to measure interactions between AtCesAs to investigate if specific and consistent interactions exist. The results suggest that CesA8 and A4 can form homodimers in planta, and that there might be weak or transient interactions between AtCesA7-A4 and AtCesA7-A8. Collectively, the results presented suggest, indirectly, an unequal ratio of CesA subunits (AtCesA4:A7:A8) is required for proper cellulose biosynthesis, and that each CesA likely has a unique function which ultimately affects cellulose properties such as cell wall crystallinity and DP. Our conclusions shed new light on the role of CesAs in cellulose biosynthesis in secondary cell walls and elicit questions about the current model of CSC form and function.
Programa de tratamiento intensivo en fibromialgia y fatiga crónica pediátricas: experiencia piloto
Creators: name: Planells, Kalia
name: Sánchez Manubens, Judith
name: Pérez, Ana
name: Costea, Maria
name: Juárez, Eugenia
name: Tamame, Marta
Publisher: name: Psicosomàtica y Psiquiatría
Year: 2021

description: Psicosomàtica y Psiquiatría, Núm. 11 (2019): octubre-noviembre-diciembre
Long-term health related recovery and outcomes in survivors of intensive care
Creators: name: Solverson, Kevin
Publisher: name: Graduate Studies
Year: 2013
Subjects: subject: Epidemiology
subject: critical illness
subject: Muscle weakness
subject: health related quality of life
subject: physical function

description: Our objective was to create a follow-up clinic for survivors of critical illness in order to examine objective physical functioning, mental health and sleep quality and relate these findings to health related quality of life (HRQL) and ICU risk factors. 56 patients were evaluated at 2 months post hospital discharge and 19 patients at 4 months. At 2 months post hospital discharge we found that: Patients had reduced muscle strength and physical functioning and neither were association with ICU risk factors; Reduced muscle strength was correlated with poor physical functioning; Patients’ HRQL was associated with decreased physical functioning; Anxiety was common and found to correlate with poor HRQL and physical functioning; Objective sleep quality was poor and predicted by increased severity of critical illness. Long-term physical and mental morbidity is common in critical illness survivors and impacts HRQL. ICU follow-up clinics should be considered in all survivors of critical illness.
The Population of Augustan and Severan Rome
Creators: name: Carlyle, James
Publisher: name: Graduate Studies
Year: 2016
Subjects: subject: History--Ancient
subject: Demography
subject: FOS: Sociology

description: The city of Rome was the capital of an empire that stretched from the Pillars of Hercules in the West to the Euphrates River in the East. This dissertation seeks to quantify the Augustan (27 BCE- 14 CE) and Severan (193-211 CE) populations of this city. For the time of Augustus, the population shall reckon from a group of 250,000 male citizens in receipt of state-funded largesse, estimating the number of women, children, slaves, freedmen, and foreigners that such a number may support. The Severan population will be measured using a statistical model estimating the floor area of all residential housing and dividing this total by the average floor area per person. A range of interpretations will emerge from this evidence, so I shall offer both a possible and a probable range of population, so that others can see the upper and lower limits allowed by the data.
Design and Implementation of an RTK-based Vector Phase Locked loop in a GNSS Software Receiver
Creators: name: Shafaati, Ahmad
Publisher: name: Graduate Studies
Year: 2017
Subjects: subject: Engineering--Electronics and Electrical
subject: Geotechnology
subject: GNSS
subject: RTK
subject: vector tracking
subject: difference correlator

description: GNSS carrier phase tracking is very demanding and challenging. The focus of this thesis is to develop and test an innovative tracking loop with potentially better performance than existing loops in harsh environments. The proposed Double-Difference VPLL (Vector-based Phase Locked Loop) is assisted with base station observations to estimate carrier phase and carrier Doppler measurements at the rover station using information from a stationary base station. The double differencing operation eliminates or substantially reduces spatially and temporally correlated errors between base and rover receivers, leading to increased robustness. A backup layer operating in parallel that provides reference satellite measurements and enhances receiver sensitivity in also introduced. It is shown that the two tracking loop parts have complementary performance in the sense that the backup layer has a lower tracking jitter at high C/N0 values whereas the VPLL has superior functionality at low C/N0 values. Comprehensive mathematical derivations and analyses are described to quantify operations and advantages. The theoretical models are supported by a number of simulation scenarios. The proposed method is also assessed with GPS L1C/A IF samples obtained through hardware-in-the-loop simulations. The proposed method is compared with two other tracking methods, namely the scalar-based and VFLL assisted PLL loops in terms of tracking sensitivity and the probability of an integer ambiguity fixed solution for carrier phase positioning. It is shown through extensive simulations and real data that this algorithm results in better carrier phase availability in degraded environments.
Η περί της Θεοτόκου διδασκαλία στις ομιλίες του αγίου Γρηγορίου του Παλαμά
Creators: name: Μιχόπουλος, Δημοσθένης Κωνσταντίνου
Publisher: name: Aristotle University of Thessaloniki
Year: 2023
Subjects: Θεοτόκος
Παλαμάς
Αναμαρτησία
Theotokos
Palamas
Sinlessness

description: Κάθε λόγος ανθρώπου ενώπιον του Μυστηρίου της Θεοτόκου σιγεί. Μπορεί να ομιλήσει περί αυτού μόνον ο εν πνεύματι τελειωθείς νους των Αγίων Πατέρων της Εκκλησίας μας. Ο Άγιος Γρηγόριος ο Παλαμάς, τεθείς υπό την προστασία της Θεοτόκου από τα νεανικά του ακόμα χρόνια, και αξιωθείς του χαρίσματος της απταίστου θεολογίας, μας διδάσκει ότι ἡ Θεοτόκος «είναι το θεοπρεπές ταμείον της κορυφαίας ακρότητος των μυστηρίων του Πνεύματος». Σε μια εποχή όπου στην Ορθόδοξη θεολογία έχουν παρεισφρήσει δυστυχώς αιρετικά στοιχεία δυτικών δοξασιών, εξαιρέτως δε περί του πανυπερτιμίου προσώπου της Παναχράντου μητέρας του Εμμανουήλ, ο Αρχιεπίσκοπος Θεσσαλονίκης δεν μπορεί παρά να αποτελέσει τον ασφαλή οδηγό κάθε ειλικρινούς θεολογικής αναζητήσεως.
description: Every word of man before the Mystery of the Theotokos is silenced. Only the spiritually perfect mind of the Holy Fathers of our Church can speak about this. St. Gregory the Palamas, placed under the protection of the Theotokos from his young years, and credited with the gift of infallible theology, teaches us that the Theotokos "is the divine fund of the supreme obedience of the mysteries of the Spirit". In an era where heretical elements of Western beliefs have unfortunately infiltrated Orthodox theology, especially regarding the most precious person of the Most Holy Mother of Emmanuel, the Archbishop of Thessaloniki cannot but be the safe guide of every honest theological search.
Public Spanish Bilingual Schools in Calgary, Alberta: A Case Study of Parent and Student Perspectives and Expectations
Creators: name: Appelt, Liana
Publisher: name: Graduate Studies
Year: 2017
Subjects: subject: Education
subject: education
subject: Bilingual
subject: Spanish
subject: Bilingualism
subject: Language
subject: Programs
subject: Perceptions
subject: Schools

description: This qualitative research aids in elucidating why parents choose the Calgary Board of Education (CBE) Spanish bilingual education program for their children. Case study was the methodology used to collect data through an anonymous electronic survey completed by 83 parents. Ten major findings emerged. An additional five key findings were derived from interview responses of nine participants, recently graduated grade 12 students and parents who had lived experience in the CBE Spanish Bilingual Program. The survey and interview findings were analyzed and subsequently grouped into three analytic categories, which connect the outcomes of the study to Pierre Bourdieu’s concept of Habitus and its relation to the acquisition of various forms of capital. The major finding that emanates from both sources of participant data was that parents predominantly cited the ‘benefits of being bilingual’ as the primary reason for choosing a Spanish school for their child. However, analysis of the responses revealed that parents ultimately chose Spanish education on account of their perception (Habitus), that the program (irrespective of acquisition of an additional language) provided higher quality instruction, better teachers, and was comprised of students possessing superior academic abilities than those in regular, English only, schools. In spite of spending 12+ years in the program, student participants reported that they did not consider themselves bilingual, as characterised by the CBE’s term of ‘functional bilingualism’ that is defined by the ability to use Spanish easily and accurately. Participants self-assessed their language abilities as that of being partially bilingual and claimed that their Spanish had not improved since grade nine. They reported that the atrophy in their Spanish skills was due, in part, to a steep decline of instructional minutes in the target language from grades 10-12. Parents and graduates felt that those who were academically strong in all subjects were likely to complete and do well in the program. Participants shared that their experience showed fewer than 50% of students remained in the program until grade 12. Attrition data for the Spanish program and student assessment results support these three claims. Although parental perception of the program does not match actual student outcomes, participants reported being satisfied with their choice and would recommend the program to others.
Phase transitions for suspension flows
Creators: name: Iommi, Godofredo
name: Jordan, Thomas
Publisher: name: arXiv
Year: 2012
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics

description: This paper is devoted to study thermodynamic formalism for suspension flows defined over countable alphabets. We are mostly interested in the regularity properties of the pressure function. We establish conditions for the pressure function to be real analytic or to exhibit a phase transition. We also construct an example of a potential for which the pressure has countably many phase transitions.
description: Example 5.2 expanded. Typos corrected. Section 6.1 superced the note "Thermodynamic formalism for the positive geodesic flow on the modular surface" arXiv:1009.4623
Investigating the regulatory roles of Platelet-derived Growth Factor in the dermal stem cell niche
Creators: name: Moffatt, Garrett Evan
Publisher: name: Graduate Studies
Year: 2013
Subjects: subject: Cell
subject: Skin
subject: Hair
subject: Stem Cells

description: Skin-derived Precursors (SKPs) are multipotent, self-renewing adult dermal stem cells able to differentiate into functional neural and mesenchymal progeny. SKPs reside within a specialized niche including both the hair follicle dermal papilla and dermal sheath and function to induce hair follicle morphogenesis and cyclic regeneration. However, the factors regulating their behavior are not understood. My work demonstrates that Platelet-derived Growth Factor (PDGF) is a key regulator of SKP function within their hair follicle niche. Using adult SKPs I show that growth in the presence of PDGF-B promotes increased SKP proliferation and self-renewal in vitro, as well as increased hair follicle formation in an ex vivo hair growth assay. Finally, my work identifies the hair follicle epithelium (outer root sheath) and potentially dermal adipocytes as a source of PDGF in the skin. Understanding this regulation will improve our ability to expand SKP numbers and quality for therapeutic application following skin injury.
Dynamic Alterations of the Mesenteric Lymphatic System in Murine Ileitis: Impications for Crohn’s Disease Pathogenesis
Creators: name: Rehal, Sonia
Publisher: name: Graduate Studies
Year: 2017
Subjects: subject: Microbiology
subject: FOS: Biological sciences
subject: Biology--Molecular
subject: Immunology
subject: FOS: Clinical medicine
subject: Pathology
subject: Pharmacology
subject: Lymphatic Vessels
subject: Inflammation
subject: Inflammatory Bowel Disease
subject: Dendritic cells

description: Inflammatory bowel disease (IBD) remains a challenging disease to treat due to its complex pathophysiology. It encompasses Crohn’s Disease and ulcerative colitis, both characterized by chronic inflammation. Exaggerated inflammatory responses in IBD are thought to be partly mediated by over-reactive immune cells. In particular, dendritic cells (DCs) have been shown to be over-recruited and hyper-responsive in clinical and experimental IBD tissue. DCs require trafficking through mucosal and mesenteric lymphatic vessels to drain into mesenteric lymph nodes (MLNs). Remodeling of these vessels during inflammation could have dire effects on DC effector function and immune responses in the inflamed intestine. Lymphatic vessel plasticity is also an important concept during acute intestinal injury for proper resolution of inflammation. Human and animal studies demonstrate pathological remodeling of mucosal lymphatic changes during IBD, including lymphangiogenesis and lymphatic vessel dilation. However, no studies have addressed the role of mesenteric lymphatic remodeling in replicable models of acute or chronic ileitis. These objectives were investigated using both the acute, dextran sodium sulphate (DSS) mouse model of ileitis and the chronic, transgenic TNFΔARE mouse model of ileitis. Plasticity of this remodeling was further assessed in recovery DSS mice. Our research findings demonstrate that chronic CD-like ileitis in TNFΔARE mouse model displays many lymphatic abnormalities. These include intestinal lymphangiectasia and MLN lymphadenopathy, reminiscent of human CD. TNFΔARE vessels have increased lipid transport, lymphangiogenesis and critically the development of mesenteric tertiary lymphoid organs (TLOs), actively involved in immune modulation; all of which we believe cause altered DC trafficking in these mice. Many of these changes were replicated in the acute DSS ileitis mouse model, albeit at a lesser extent. However, decreased lymph flow was observed during acute injury. Despite having recovered from DSS-induced intestinal inflammation, mice continued to display marked mesenteric lymphatic dysfunctions, such as lymphadenopathy and lymphangiogenesis. Lamina propria (LP), lymphatic vessels and mesenteric lymph nodes (MLNs) also continued to exhibit enhanced DC populations. This study contributes intriguing findings on remodeling of the lymphatic system within the context of small intestinal inflammation, commonly found in CD patients. Modulating lymphatic function during inflammation might offer new therapeutic avenues for IBD.