cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Data Governance Plan for Madagascar  Energy Access and Modelling
Creators: name: RAHARISOA, Anita Carola
name: RASOARIMALALA, Marie Emondine
name: RAKOTONDRATSIMBA, Andriampanarivo
Publisher: name: Zenodo
Year: 2024

description: In Madagascar, the Ministry of Energy and Hydrocarbons, along with its entities including the Regulatory Office of Electricity and the Rural Electrification Development Agency, the national network manager manages the country's energy sector. However, there is no structured data management and governance approach, leading to fragmented practices. A data governance plan would ensure consistent, accurate, and up-to-date data for informed decisions and precise modeling of energy needs and resources. This would promote data sharing among stakeholders, improve energy access, and enable evidence-based decision-making. A robust data governance plan would also help meet regulatory and compliance obligations, reducing legal and financial penalties
Factors Influencing Attitudes Toward Blended E-learning Using Learning Management Systems: A Case Study in a University in Thailand
Creators: name: Pitchayakorn Lake
Publisher: name: Silpakorn University Research and Development Institute
Year: 2020
Subjects: Blended e-learning
Technology Acceptance Model
attitude
perceived usefulness

description: Humanities, Arts and Social Sciences Studies, 20, 1, 247-295
Cell cycle regulation of the nuclear receptor coactivator SRC-3AIB1 and impact of overexpression
Creators: name: Renart, Laura Isabel
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2005
Subjects: subject: Biology, Molecular.
subject: Biology, Cell.

description: SRC-3 is a nuclear receptor coactivator which is amplified and overexpressed in many breast cancers. Although the importance of this protein in a plethora of cellular functions has been established, little is understood about how it is regulated. In this study, we have investigated the regulation of SRC-3 throughout the cell cycle and the effects of aberrant SRC-3 expression. We have found that SRC-3 is regulated throughout the cell cycle via changes in compartmentalization, post-translational modification and degradation, in a Cdk1-, MAPK- and proteasome-dependent manner. Deregulation of SRC-3 expression has substantial effects on cellular growth rate, cell cycle progression, cell morphology and DNA content. Collectively, these findings suggest that disruption of SRC-3 activity gives rise to cells with aberrant cell cycles, resulting in genetic instability and potential aneuploidy. Although in most cells this disruption results in cell cycle arrest and possible apoptosis, it might also set the stage for SRC-3-mediated oncogenesis.
EphrinB2 reverse signaling in endothelial cell migration and actin remodeling
Creators: name: Sakanovic, Alenko
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2005
Subjects: subject: Biology, Cell.
subject: Chemistry, Biochemistry.

description: Angiogenesis, the formation of new blood vessels from preexisting vasculature, is exaggerated in cancer. A ligand that may be involved in angiogenesis is ephrinB2, which upon binding to its cognate receptor on an adjacent cell, becomes phosphorylated on tyrosine residues and transduces an as yet uncharacterized signal inside the cell. To examine reverse signaling pathways mediated by ephrinB2, ephrinB2 mutants were generated in which five tyrosine residues in the cytoplasmic tail were mutated to phenylalanine by site directed mutagenesis to effectively block the putative signal transduction pathways. Upon overexpression of wildtype and mutant ephrinB2 in endothelial cells, cellular phenotype changed drastically, with impeded proliferation and severe impact on actin remodeling. Observed cytoskeletal changes suggested that the Rho-like GTPases were involved in the actin remodeling mediated by the cytoplasmic tail of ephrinB2. Thus, activation of Rac and Rho upon ephrinB2 stimulation with soluble EphB6, a cognate receptor of ephrinB2, was examined. Adenoviral vectors encoding wildype and mutant ephrinB2 were also generated and used to infect endothelial cells. Wounding assays were used to monitor cell migration of ephrinB2 overexpressing cells to characterize the role of ephrinB2 in this process. Our data suggest that ephrinB2 may play an important role in the migration of endothelial cells during angiogenesis and future work will identify the signaling components of this pathway.
The worst approximable rational numbers
Creators: name: Springborn, Boris
Publisher: name: arXiv
Year: 2022
Subjects: subject: Number Theory (math.NT)
subject: Geometric Topology (math.GT)
subject: Metric Geometry (math.MG)
subject: FOS: Mathematics
subject: 10F20, 30F60

description: We classify and enumerate all rational numbers with approximation constant at least $\frac{1}{3}$ using hyperbolic geometry. Rational numbers correspond to geodesics in the modular torus with both ends in the cusp, and the approximation constant measures how far they stay out of the cusp neighborhood in between. Compared to the original approach, the geometric point of view eliminates the need to discuss the intricate symbolic dynamics of continued fraction representations, and it clarifies the distinction between the two types of worst approximable rationals: (1) There is a plane forest of Markov fractions whose denominators are Markov numbers. They correspond to simple geodesics in the modular torus with both ends in the cusp. (2) For each Markov fraction, there are two infinite sequences of companions, which correspond to non-simple geodesics with both ends in the cusp that do not intersect a pair of disjoint simple geodesics, one with both ends in the cusp and one closed.
description: 52 pages, 19 figures. v2: Flahive and Gurwood references added; abstract, introduction, and acknowledgements updated. v3: slightly restructured & expanded exposition, figure added. Final version
Evaluation of c-KIT in ovarian surface epithelial cells and ovarian tumours
Creators: name: Vandermeer, Lisa Anne
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2005
Subjects: subject: Biology, Molecular.
subject: Biology, Cell.
subject: Health Sciences, Oncology.

description: Ovulation is a putative risk factor for ovarian cancer, and may be attributed to proliferating ovarian surface epithelial (OSE) cells interacting with the extracellular matrix (ECM) during ovulatory wound repair. We investigated the effects of ECM and cellular density on OSE cell morphology, proliferation, and expression of c-Kit, a proto-oncogene expressed in 70% of ovarian tumours. Fibrillar collagen I caused significant changes in morphology and proliferation but monomeric ECM had no effect. Normal human ovaries co-expressed KIT, collagen I and fibronectin in 75% of abnormal OSE structures. At increased cellular densities, rat OSE cells expressed increased levels of Kit. Retrovirus-mediated expression of c-Kit in OSE caused a significant increase in proliferation. Additionally, sequence analysis of c-KIT in 21 ovarian tumours revealed no mutations. These results suggest a relationship between KIT and collagen I in OSE and that cellular density in the OSE regulates KIT, which increases cell proliferation and may contribute to transformation.
Open-source High-precision Autonomous Suturing Framework With Visual Guidance
Creators: name: Lin, Hongbin
name: Li, Bin
name: Liu, Yunhui
name: Au, Kwok Wai Samuel
Publisher: name: arXiv
Year: 2022
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Autonomous surgery has attracted increasing attention for revolutionizing robotic patient care, yet remains a distant and challenging goal. In this paper, we propose an image-based framework for high-precision autonomous suturing operation. We first build an algebraic geometric algorithm to achieve accurate needle pose estimation, then design the corresponding keypoint-based calibration network for joint-offset compensation, and further plan and control suture trajectory. Our solution ranked first among all competitors in the AccelNet Surgical Robotics Challenge. Videos and codes can be found in https://sites.google.com/view/accel-2022-cuhk.
On Quantum Sobolev Inequalities
Creators: name: Lafleche, Laurent
Publisher: name: arXiv
Year: 2022
Subjects: subject: Mathematical Physics (math-ph)
subject: Analysis of PDEs (math.AP)
subject: Functional Analysis (math.FA)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: 46E35, 81Q20, 81S30, 47A30 (Primary) 81S07, 46N50 (Secondary)

description: We investigate the quantum analogue of the classical Sobolev inequalities in the phase space, with the quantum Sobolev norms defined in terms of Schatten norms of commutators. These inequalities provide an uncertainty principle for the Wigner-Yanase skew information, and also lead to new bounds on the Schatten norms of the Weyl quantization in terms of its symbol. As an intermediate tool, we obtain the analogue of Hardy-Littlewood-Sobolev's inequalities for a semiclassical analogue of the convolution, and introduce quantum Besov spaces. Explicit estimates are obtained on the optimal constants.
description: 27 pages. v2: added references, Morrey inequalities and comments on Riesz transforms. v3: typos corrected, added parallel and references to the skew information (Cor 2.2), comparison with commutators with complex exponentials (Prop 2.3) and an appendix on the quantum fractional Laplacian
IMC, its antecedents and brand performance
Creators: name: Luxton, S.
name: Reid, M.
name: Mavondo, F.
Publisher: name: Swinburne
Year: 2024

description: This paper examines the relationship between Integrated Marketing Communication (IMC), Market Orientation (MO), Learning Orientation (LO), Brand Orientation (BO) and brand performance. It is proposed that there is a significant positive relationship between these constructs, with MO, LO and BO considered necessary conditions for successful IMC. It is proposed that BO is the implementation of market and learning orientation at a business unit level, whilst IMC is the implementation of the MO, LO and BO concepts in the context of developing and implementing external communication. The findings from a study of 187 organisations are presented which support this proposition. It is concluded that IMC, MO, LO and BO are interdependent constructs that have an important strategic role to play in maximising brand performance. These findings make an important research contribution, and serve to reinforce the value of supporting the IMC construct.
Delivery of broadband to Canadians without access via wireless technology and GIS modelling
Creators: name: Cossette, Daniel Joseph Denis
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2006
Subjects: subject: Geography.
subject: Mass Communications.

description: Millions of Canadians residing in northern, isolated, rural and remote communities do not have broadband internet and this has led to a national 'broadband divide' induced by geography. The rollout of wired broadband is limited in rural and remote areas because of the high deployment and maintenance costs that would be passed onto the consumer who would be unwilling to pay exorbitant subscription fees. Alternatively, wireless broadband access does not entail the kind of physical infrastructure and associated costs which dramatically changes how broadband internet can be provided beyond the urban zone. This research develops a geographic information systems (GIS) model to determine if emerging terrestrial wireless broadband technologies (WiMAX) can effectively service the rural and remote regions of Canada. In addition, the robustness of the GIS model is tested in Alberta using intervisibility analyses at multiple spatial scales. Results suggest that coarse-scale GIS modelling with minimal data requirements can reliably identify potential wireless broadband markets. This research clearly shows that GIS modelling can make a significant contribution to the analysis of wireless deployment planning, to the understanding of the relationships between wireless signal sources and consumers, and to the spatial configuration of terrestrial wireless broadband networks.
Cavity-enhanced zero-phonon emission from an ensemble of G centers in a silicon-on-insulator microring
Creators: name: Lefaucher, B.
name: Jager, J. -B.
name: Calvo, V.
name: Durand, A.
name: Baron, Y.
name: Cache, F.
name: Jacques, V.
name: Robert-Philip, I.
name: Cassabois, G.
name: Herzig, T.
name: Meijer, J.
name: Pezzagna, S.
name: Khoury, M.
name: Abbarchi, M.
name: Dréau, A.
name: Gérard, J. -M.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We report successful incorporation of an ensemble of G centers in silicon-on-insulator (SOI) microrings using ion implantation and conventional nanofabrication. The coupling between the emitters and the resonant modes of the microrings is studied using continuous-wave and time-resolved microphotoluminescence (PL) experiments. We observe the resonant modes of the microrings on PL spectra, on the wide spectral range that is covered by G centers emission. By finely tuning the size of the microrings, we match their zero-phonon line at 1278 nm with a resonant mode of quality factor around 3000 and volume 7.2 (lambda over n)^3. The zero-phonon line intensity is enhanced by a factor of 5, both in continuous-wave and time-resolved measurements. This is attributed to the Purcell enhancement of zero-phonon spontaneous emission into the resonant mode and quantitatively understood considering the distribution of the G centers dipoles. Despite the enhancement of the zero-phonon emission, we do not observe any sizeable decrease of the average lifetime of the G centers, which points at a low radiative yield (<10%). We reveal the detrimental impact of parasitic defects in heavily implanted silicon, and discuss the perspectives for quantum electrodynamics experiments with individual color centers in lightly implanted SOI rings. Our results provide key information for the development of deterministic single photon sources for integrated quantum photonics.
description: 24 pages, 7 figures, submitted to an international journal with peer review
Direct non-productive HIV-1 infection in a T-cell line is driven by cellular activation state and NFκB
Creators: name: Dahabieh, Matthew S.
name: Ooms, Marcel
name: Brumme, Chanson J.
name: Taylor, Jeremy
name: Harrigan, Paul Richard
name: Simon, Viviana
name: Sadowski, Ivan
Publisher: name: BioMed Central
Year: 2016

description: Background: Molecular latency allows HIV-1 to persist in resting memory CD4+ T-cells as transcriptionally silent provirus integrated into host chromosomal DNA. Multiple transcriptional regulatory mechanisms for HIV-1 latency have been described in the context of progressive epigenetic silencing and maintenance. However, our understanding of the determinants critical for the establishment of latency in newly infected cells is limited. Results: In this study, we used a recently described, doubly fluorescent HIV-1 latency model to dissect the role of proviral integration sites and cellular activation state on direct non-productive infections at the single cell level. Proviral integration site mapping of infected Jurkat T-cells revealed that productively and non-productively infected cells are indistinguishable in terms of genomic landmarks, surrounding epigenetic landscapes, and proviral orientation relative to host genes. However, direct non-productive infections were inversely correlated with both cellular activation state and NFκB activity. Furthermore, modulating NFκB with either small molecules or by conditional overexpression of NFκB subunits was sufficient to alter the propensity of HIV-1 to directly enter a non-productive latent state in newly infected cells. Importantly, this modulatory effect was limited to a short time window post-infection. Conclusions: Taken together, our data suggest that cellular activation state and NFκB activity during the time of infection, but not the site of proviral integration, are important regulators of direct HIV-1 non-productive infections.
Adaptation to desiccation resistance fails to generate pre- and postmating isolation in Drosophila melanogaster
Creators: name: Kwan, Lucia
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2009
Subjects: subject: Biology, Evolution and Development.

description: Many laboratory speciation experiments have raised allopatric populations in different environments to determine whether reproductive isolation evolves as a by-product of adaptation. Few, however, have controlled for the effects of genetic drift, addressed the evolution of both pre- and postmating isolation, or investigated the conditions that promote or hamper the process. I present results of a long-term evolution experiment in which 12 replicate populations of Drosophila melanogaster independently evolved for more than 57 generations under alternative desiccation treatments (six control and six desiccation-selected populations). Specifically, I demonstrate the divergence between the desiccation and control populations of cuticular hydrocarbons, key traits that have been implicated in mate choice and sexual isolation in Drosophila. Despite this divergence, there was no detectable pre- or postmating isolation between the desiccation and control populations. Novel environments are generally thought to promote the evolution of reproductive isolation. Understanding the conditions that favour or hamper this remains a key challenge for speciation research.
Identifying the roles of the amino terminal and first transmembrane regions of human D1-like dopaminergic receptors using mutagenesis
Creators: name: D'Aoust, Jean Philippe
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2009
Subjects: subject: Biology, Neuroscience.

description: Although D1-like dopaminergic receptors (D1R and D5R) share similar primary sequences, they possess distinct ligand binding and G protein-coupling properties. Since no ligands discriminate the closely related D1R and D5R, the discovery of their subtype-specific functional and physiological functions is stalled. To provide additional conformational data about the binding pocket of D1-like receptors, we assessed the functional roles of their highly divergent amino terminal cassette. Using a chimerical approach, we swapped the extracellular amino terminal (NT) and first transmembrane (TM1) regions of human D1-like receptors and found that both regions distinctly control dopamine efficacy. Furthermore, chimeras with a swapped TM1 domain have altered affinity and selectivity properties. We further identified two residues in TM1 controlling ligand binding while one of them is also crucial for dopamine efficacy. Our present results highlight structural and functional roles of TM1 and NT of human D1-like dopaminergic receptors.
Synthesis of organic and inorganic compounds for OLED application: Physico-chemical characterization of new diamines, heterocycles and group 13 compounds
Creators: name: Shan, Jingning
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2004
Subjects: subject: Chemistry, Organic.

description: This thesis is focused on the synthesis and characterization of organic and inorganic electroluminescent materials for organic light-emitting diodes (OLED). The synthetic work was aimed at several of the key components of multilayer OLEDs and followed the latest developments in this area. Three types of OLED materials, namely hole-transport (HT), electron-transport (ET) and emission (EM) materials in four groups were successfully synthesized. The characterization of these materials focuses on the physical and chemical features that are important in defining performance parameters. This chemist's perspective highlights the potential application of these novel compounds employed in fabricating OLEDs, which is based on the results from thermal, photophysical and electrochemical analysis. Chapter one outlines the background of OLED, the operation of a double-layer and multilayer OLEDs and the current state of OLED materials. The objectives of this thesis are proposed after describing the general techniques that are important for characterization of the parameters needed for further OLED fabrication. Chapter two focuses on the synthesis and characterization of HT materials based of aryldiamines with a naphthalene core (bis(N;N-diaryl)-1,5-diaminonaphthalene). Pd-based catalysts have been employed in the C-N bond formation steps of the synthesis of these compounds. The thermal results indicated that these diamines, particularly when they possess bulky aryl groups such as biphenyl and naphthyl, had high glass transition temperatures and thus offer the potential for improving upon OLED stability. Chapter three is concerned with developing C-4 substituted tris(8-hydroxyquinoline) aluminum (Alq3) derivatives. Alq3 is frequently used as both an ET and an EM material in OLEDs. The modification of the C-4 position of Alq3 and the subsequent influence on the LUMO energy was investigated. In Chapter four, we investigated EM materials by preparing and characterizing substituted salicylaldimine diphenylboron complexes. Thermal characterization of these compounds indicated that a bulky substituent was needed to improve the thermal stability of these boron complexes. Chapter five reports our effort to synthesize a novel ET material that was designed as a perimidine-based analogue of 2,2 ',2″-(Benzene-1,3,5-triyl)-tris(1-phenyl-1H-benzimidazole) (TPBI). In Chapter six, a broad summary of these efforts and future prospects are presented. (Abstract shortened by UMI.)
Fighting the scanner effect in brain MRI segmentation with a progressive level-of-detail network trained on multi-site data
Creators: name: Svanera, Michele
name: Savardi, Mattia
name: Signoroni, Alberto
name: Benini, Sergio
name: Muckli, Lars
Publisher: name: arXiv
Year: 2022
Subjects: subject: Image and Video Processing (eess.IV)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: Many clinical and research studies of the human brain require an accurate structural MRI segmentation. While traditional atlas-based methods can be applied to volumes from any acquisition site, recent deep learning algorithms ensure very high accuracy only when tested on data from the same sites exploited in training (i.e., internal data). The performance degradation experienced on external data (i.e., unseen volumes from unseen sites) is due to the inter-site variabilities in intensity distributions induced by different MR scanner models, acquisition parameters, and unique artefacts. To mitigate this site-dependency, often referred to as the scanner effect, we propose LOD-Brain, a 3D convolutional neural network with progressive levels-of-detail (LOD) able to segment brain data from any site. Coarser network levels are responsible to learn a robust anatomical prior useful for identifying brain structures and their locations, while finer levels refine the model to handle site-specific intensity distributions and anatomical variations. We ensure robustness across sites by training the model on an unprecedented rich dataset aggregating data from open repositories: almost 27,000 T1w volumes from around 160 acquisition sites, at 1.5 - 3T, from a population spanning from 8 to 90 years old. Extensive tests demonstrate that LOD-Brain produces state-of-the-art results, with no significant difference in performance between internal and external sites, and robust to challenging anatomical variations. Its portability opens the way for large scale application across different healthcare institutions, patient populations, and imaging technology manufacturers. Code, model, and demo are available at the project website.
Time Course Analysis of the Effects of Botulinum Neurotoxin Type A on Pain and Vasomotor Responses Evoked by Glutamate Injection into Human Temporalis Muscles
Creators: name: Da Silva, Larissa Bittencourt
name: Kulas, Dolarose
name: Karshenas, Ali
name: Cairns, Brian E.
name: Bach, Flemming W.
name: Arendt-Nielsen, Lars
name: Gazerani, Parisa
Publisher: name: Multidisciplinary Digital Publishing Institute
Year: 2019

description: The effect of botulinum neurotoxin type A (BoNTA) on glutamate-evoked temporalis muscle pain and vasomotor responses was investigated in healthy men and women over a 60 day time course. Subjects participated in a pre-BoNTA session where their responses to injection of glutamate (1 M, 0.2 mL) and saline (0.2 mL) into the temporalis muscles were assessed. On Day 1, BoNTA (5 U) was injected into one temporalis muscle and saline into the contralateral temporalis muscle, in a randomized order. Subjects then received intramuscular injections of glutamate (1 M, 0.2 mL) into the left and right temporalis muscles at 3 h and subsequently 7, 30 and 60 days post-injection of BoNTA. Pain intensity, pain area, and neurogenic inflammation (skin temperature and skin blood perfusion) were recorded. Prior to BoNTA treatment, glutamate evoked significantly greater pain and vasomotor reactions (P < 0.001) than saline. BoNTA significantly reduced glutamate-evoked pain intensity (P < 0.05), pain area (P < 0.01), skin blood perfusion (P < 0.05), and skin temperature (P < 0.001). The inhibitory effect of BoNTA was present at 3 h after injection, peaked after 7 days and returned to baseline by 60 days. Findings from the present study demonstrated a rapid action of BoNTA on glutamate-evoked pain and neurogenic inflammation, which is in line with animal studies.
title: Enhancing resilience towards summer storms from a spatial planning perspective
title: lessons learned from summer storm Ela
titleType: AlternativeTitle
Creators: name: Schmitt, Hanna Christine
name: Greiving, Stefan
Publisher: name: Technische Universität Dortmund
Year: 2018
Subjects: subject: Extreme events
subject: Storm
subject: Spatial planning
subject: Resilience
subject: Critical infrastructure
subject: Summer storm
subject: Convective extreme event
subject: Ubiquitous weather event
subject: Risk management
subject: Germany
subject: 710

description: Every year, convective extreme weather events like summer storms, hail and heavy precipitation cause enormous damages to assets, values and human lives, especially in urban areas. Although highly relevant for the field and expertise of spatial planning, so far those events are addressed rather poorly; if at all. This is mainly for two reasons: for one, convective extreme events are of ubiquitous character, meaning they have unknown probability and place of occurrence, i.e. are accompanied by great uncertainties. For another, spatial planning does not dispose of convenient concepts and instruments to address events with an intan-gible hazard component, as they are spatially not describable and therefore risk analyses presumably inapplicable. Ultimately, ubiquitous extreme weather events challenge urban disaster resilience and call for enhanced risk management approaches. This chapter discusses the strengths and limitations of spatial planning in dealing with ubiquitous extreme weather events, using the example of summer storm Ela, which devastated large parts of Western Germany in June 2014.
Cultivation of microalgae Chlorella vulgaris in photobioreactor for biodiesel production
Creators: name: Debska, Dorota J
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2009
Subjects: subject: Alternative Energy.
subject: Engineering, Chemical.

description: Microalgae are gaining considerable attention as a feedstock for biodiesel production. They can be grown away from the croplands and hence do not compromise food crop supplies. The ability of microalgae to capture solar energy and fix CO2 is a promising process for sustainable production of biomass. Chlorella vulgaris may be suitable for biodiesel production due to its faster growth and easier cultivation compared to other strains. The effect of media composition and process conditions on biomass productivity of C. vulgaris are investigated in a laboratory scale photobioreactor. The results show excellent growth of C. vulgaris on 2X Tris-Acetate-Phosphate culture medium, reaching biomass concentrations around 7.7 g/L. The combination of process parameters that result in highest biomass for our system are: agitation at 600 rpm, temperature of 29°C, average light irradiance of 900 muE/ (m2 s), and 4% CO2 in air. The statistical analysis of biomass from fractional factorial experiments confirms that C. vulgaris growth in presence of the aforementioned process parameters can give highest biomass for our system from the process parameters that were studied. However, statistical analysis also reveals that increase in irradiance from 450 muE/ (m 2 s) to 900 muE/ (m2 s) in our system did not have significant effect on biomass concentration.
Higher order exchange driven noncoplanar magnetic state and large anomalous Hall effects in electron doped kagome magnet Mn$_3$Sn
Creators: name: Singh, Charanpreet
name: Jamaluddin, Sk
name: Nandy, Ashis K.
name: Tokunaga, Masashi
name: Avdeev, Maxim
name: Nayak, Ajaya K.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Owing to the geometrical frustration, Mn$_3 $Sn exhibits a 120$^{\circ}$ in-plane triangular antiferromagnetic (AFM) order with a large anomalous Hall effect (AHE). Here, we present a combined theoretical and experimental study to demonstrate that the in-plane AFM structure in Mn$_3 $Sn can be significantly modified to a tunable noncoplanar magnetic state by suitable electron doping. With the help of Density Functional Theory calculations we show that the presence of higher-order exchange interactions in the system leads to the stabilization of the noncoplanar magnetic ground state, which is further established by neutron diffraction study in the Fe-doped Mn$_3 $Sn sample. Interestingly, we find a large scalar spin chirality (SSC) induced topological AHE that can be significantly tuned with the degree of non-coplanarity. We carry out 60~T magnetic and Hall resistivity measurements to demonstrate the contribution of SSC to the observed AHE. We also illustrate a simultaneous manipulation of dual order in the system, where the AHE arising from the in-plane 120$^{\circ}$ triangular AFM order can switch its sign without affecting the AHE generated by the SSC. The present study opens up a new direction to explore novel quantum phenomena associated with the coexistence of multiple orders.
Sulfate removal from concentrated sodium chloride brines for chloralkali industry with nanofiltration membranes
Creators: name: Yu, Bo
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2006
Subjects: subject: Engineering, Chemical.

description: Nanofiltration membrane elements have been employed for the treatment of solutions containing raw brine generated by chloralkali industry. This study focused on the selection of appropriate nanofiltration membrane element and the assessment of their performance for the removal of sulfate and the retention of chloride from feed solutions. The influence of membrane type, temperature, pressure and sodium sulfate concentration on the selective removal of sulfate from concentrated sodium chloride brines were investigated. A high passage of sodium chloride and rejection of sodium sulfate were achieved with two different commercial nanofiltration membrane elements, DL2540 produced by GE Osmonics and NF270-2540 manufactured by FilmTec (Dow), suggesting that both membranes can be employed in sulfate removal from sodium chloride brines for chloralkali industry. Operating pressure and temperature showed no significant effects on sulfate rejection under the tested conditions. However permeate flux increased with both temperature and pressure in the tested ranges. The influence of temperature on permeate flux was due to the dependency of the viscosity of salt solution, which follows the Arrhenius model. Sodium concentration in feed had significant effects on permeate flux, sulfate rejection, and sulfate concentration at membrane interface and in permeate. Sulfate rejection and permeate flux reduced sharply with the increase of sulfate concentration in feed.
5-HT1A autoreceptor regulation and functional polymorphisms that modify the serotonin system and their association with depression and schizophrenia
Creators: name: Burns, Ariel
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2006
Subjects: subject: Biology, Neuroscience.

description: The serotonergic system, and in particular the 5-HT1A receptor, are involved in the etiology and treatment of depression. The hypothesis that antidepressants downregulate 5-HT1A autoreceptor gene expression was investigated by examining 5-HT1A agonist effects on 5-HT1A promoter activity using reporter construct assays and on 5-HT1A mRNA levels by quantitative real-time PCR in raphe primary cultures. 8-OH-DPAT had no effect on 5-HT1A autoreceptor expression in either paradigm. To elucidate the genetics of mental illness, monoaminergic receptor gene polymorphisms were analyzed. An association of the 5-HT2A A(-1438)G SNP with MDD was significant in males, and a trend was seen for the 5-HT1A C(-1019)G SNP with MDD. No association of these or a D2 SNP was detected with schizophrenia. Sequencing the macaque 5-HT1A promoter and human-primate comparisons revealed potentially functional novel polymorphisms and interspecies differences. These results contribute to our understanding of the 5-HT1A receptor's role in both normal affect and psychiatric disorders.
Simultaneous alignment and structure prediction for three ribonucleic acid sequences
Creators: name: Masoumi, Beeta
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2005
Subjects: subject: Computer Science.

description: The first step in modeling the structure of an RNA molecule is the prediction of its secondary structure. Many computational techniques have been developed for this task. One approach, comparative sequence analysis, stands out for its remarkably accurate predictions. However, the technique has proven to be notoriously difficult to automate. Consequently, comparative sequence analysis still involves considerable human intervention. Sankoff proposed a dynamic programming algorithm that can simultaneously solve the sequence alignment and folding problems for multiple sequences. It combines free energy minimization with comparative sequence analysis to improve the quality of secondary structure prediction. Dynalign has been the first implementation of this algorithm for two RNA sequences. Using more input sequences should improve the accuracy, reduce the likelihood that bad predictions are made, but also lower the sensitivity. To investigate these claims, we have extended the software system Dynalign to use three input sequences, rather than two, and tested our algorithm with 10 tRNAs and 13 5S rRNAs. Specifically, the following hypotheses were tested: (1) the use of three input sequences improves the average accuracy compared to predictions based on two input sequences. Since it should be less likely that all three input sequences simultaneously fold into a bad free energy minimum compared to predictions based on two sequences, (2) the worst prediction for any sequence should be more accurate when three input sequences are used rather than two. Finally, the consensus structure of three sequences is probably less representative of the individual sequences. Therefore, (3) the average coverage should be less compared to Dynalign.
Biotransport of organic contaminants and mercury to a coastal food web in the Canadian High Arctic
Creators: name: Choy, Emily Sarah
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2009
Subjects: subject: Biogeochemistry.
subject: Environmental Health.

description: Seabird-derived nutrients enhance plant abundance in coastal ecosystems, increasing rates of primary productivity, and indirectly increasing consumer populations. However, at Cape Vera, concentrations of contaminants in the sediment of ponds below nesting colonies of northern fulmars (Fulmarus glacialis) are 10 to 60 times higher than in reference ponds (Blais et al. 2005). This pattern suggests that the colony concentrates hexachlorobenzene (HCB), total mercury (THg), and dichlorodiphenyltrichloroethane (DDT) through guano to pond sediments (Blais et al. 2005). It remains unclear whether the effects of these contaminants are localized to the ponds or whether they enter the food chain. This study was designed to determine whether organochlorines and mercury were transferred from a seabird colony to coastal food webs. Contaminant concentrations were measured in primary producers and animals. Nitrogen stable isotopes were used to detect seabird influence. Concentrations of SigmaPCB and SigmaDDT in organisms were high relative to other Arctic areas; however, THg concentrations were similar. Snow buntings (Plectrophenax nivalis ) had SigmaPCB (mean: 168 ng/g ww) and SigmaDDT (mean: 106 ng/g ww) concentrations that surpassed environmental guidelines for protecting wildlife. Biovector transport may be a source of contaminants to certain organisms at Cape Vera.
Le Saint-Esprit, Don de Dieu: Une clé de compréhension de la pneumatologie de saint Augustin
Creators: name: Djodi, Jules
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2003
Subjects: subject: Theology.

description: Le projet que nous avons développé dans cette recherche a été comme formule par Augustin lui-même. Dans son De fide et symbolo, un discours qu'il fût invité a prononcer au Concile d'Hippone en 393, saint Augustin avait exprimé la nécessité d'une meilleure connaissance du proprium de l'Esprit Saint. L'Esprit Saint, a-t-il dit, n'a pas encore été étudié avec autant d'abondance et de soin par les doctes et grands commentateurs des divines Écritures de telle sorte qu'il soit aisé de comprendre également son caractère propre.1 Ces lignes traduisent une préoccupation pneumatologique qu'il fallait suivre chez celui qu'on nomme a juste titre le docteur de la Trinité. Dans quelle mesure a-t-il tenté, pour sa part, de connaître davantage le Saint-Esprit? C'est le meme De fide et symbolo qui donne alors d'autres précieuses indications. En énumérant, sous la forme d'un bilan théologique, les divers noms que l'Ésprit Saint avait reçu, le futur évêque d'Hippone met un accent particulier sur Donum Dei: c'est un nom qui vient de l'Écriture et qui a été attesté dans la théologie des devanciers. Notre projet consiste alors à montrer qu'Augustin a privilégié Donum Dei comme le nom qui conduit a la connaissance du caractère propre de l'Esprit Saint. L'hypothèse s'appuie sur le De fide et symbolo comme un engagement théologique et une déclaration de méthode de la part d'Augustin alors jeune prêtre. Or, l'on sait par ailleurs qu'Augustin n'a pas écrit de traité sur l'Esprit Saint. N'aurait-il donc pas donné suite à la préoccupation si visible dans son discours? Donum Dei mene a tous les chantiers de la réflexion théologique d'Augustin; car avec ce nom, sa théologie de l'Esprit promet d'être intégrée à l'ensemble du mystère du salut. C'est au coeur d'une christologie et d'une ecclesiologie, d'une anthropologie et d'une théologie de la grâce, dans l'enjeu d'une sotériologie et d'une mystique qu'il faut suivre un fil conducteur pneumatologique qui fasse comprendre ce qui est propre a l'Esprit-Saint au sein de la Trinité. En partant du Don de l'Esprit Saint, c'est l'oeuvre ad extra du Saint-Esprit qui mène à son caractère propre au sein de la Trinité. Le regard peut ici se renouveler sur la critique adressée par nombre de chercheurs à Augustin de développer une théologie trinitaire statique, sans lien avec l'économie. (Abstract shortened by UMI.) 1De fide et symbolo, IX,19 (CSEL 41,22: "De Spiritu sancto autem nondum tam copiose ac diligenter disputatum est a doctes et magnis diuinarum Scripturarum tractatoribus, ut intelligi facile possit et eius proprium").
Rhodium catalyzed hydroformylation: Adventures in heterogeneous and recyclable systems
Creators: name: Bourque, S. Christine
Publisher: name: Université d'Ottawa / University of Ottawa
Year: 2005
Subjects: subject: Chemistry, General.

description: The synthesis of dendritic ligands supported on silica gel and polymers, and their use in the rhodium catalyzed hydroformylation reaction is presented in this thesis. In building a softer, more organic moiety on the surface of a heterogeneous support, the potential of uniting the advantages of heterogeneous catalysis with that of homogeneous systems is explored. The synthesis of polyamidoamine (PAMAM) dendrimers anchored on silica, via the iterative additions of methylacrylate and ethylenediamine to aminopropyl silica, is carried out. A series of C4, C6 and C12 diamines were also used to construct PAMAM dendrimers with longer diamine linkers. Phosphanylation of the various PAMAM dendrimers on silica was accomplished and the supported bis-(diphenylphosphanylmethylated) ligands were complexed to rhodium. The heterogeneous complexes were found to be effective catalysts for the hydroformylation of various aryl olefins and vinyl esters, showing good to excellent regio-selectivity for the branched aldehydes. Aliphatic olefins were also easily converted into the corresponding aldehydes, however, only a slight excess of the linear product was observed. Rhodium complexes of bis-(diphenylphosphanylmethylated) pseudopeptide based ligands immobilized on resin were prepared and studied in the hydroformylation of various olefins. The effect of relocating the metal centers from the periphery to the interior of the dendrimer was also examined. The recyclability of the aforementioned heterogeneous catalysts was investigated, however, leaching of the metal from the support and the accompanying loss of activity is observed. The synthesis of PAMAM and polyarylether ligand supported on PEG was attempted. The preparation of a soluble triphenylphosphite supported on PEG was also attempted and the crude system was evaluated as a recyclable ligand for the hydroformylation of 1-octene. Preliminary investigations into the activity of the zwitterionic (eta6-C6H5BPh 3)-Rh+(1,5-cyclooctadiene) complex with phosphite under mild hydroformylation conditions resulted in a surprising regioselective outcome where the industrially more important linear aldehyde of 1-octene was favoured with high selectivity.
title: 01_1850
Creators: name: Wesley Baldwin, John
name: Baldwin, John W.
Publisher: name: NAKALA - https://nakala.fr (Huma-Num - CNRS)
publisherIdentifier: https://ror.org/04ces3204
publisherIdentifierScheme: ROR
Year: 2018
Subjects: subject: LaMOP
subject: Laboratoire de Médiévistique Occidentale de Paris

description: L'ensemble de ces notes ont été crée par John Baldwin lors d'une de ses premières périodes de résidence à Paris. Ces documents comprennent tous les magistri qu’il avait pu rencontrer dans ses sources. Aux XIIème et XIIIème siècles, les universités n'existant pas encore, le titre de magister s'il évoque certainement une compétence n'est pas rattaché de façon systématique au passage par les écoles. De surcroît, les magistris sont le plus souvent désignés par leur seul prénom. La lecture de ces données est donc difficile et suppose un long travail pour tenter d'identifier un individu auquel on pourrait rattacher plusieurs mentions. John Baldwin avait donc renoncé à utiliser ces données pour donner un prolongement à sa magnifique étude sur les gradués d'université et leur emploi par les Capétiens et les Plantagenêts. Néanmoins, il a conservé ces données et elles sont potentiellement très utile dans le cadre de Studium, comme le sont toutes les mentions dans les volumes des Fasti Ecclesiae Gallicanae de chanoines portant ce titre de magister sans autres précisions. L'ampleur des dépouillements rend ces données très utiles et nous devons une grande reconnaissance à John Baldwin pour avoir pris la peine de faire photocopier ses fiches et de nous les avoir transmises amicalement.
Les données ainsi que les images des fiches sont accessibles sur le site Internet à l'adresse suivante : http://studium-baldwin.lamop.fr/.
Les transcriptions des fiches ont été effectuées par des étudiants de Paris 1 Panthéon - Sorbonne mais elles n'ont pas été corrigées par la suite.
description: Relation: https://lamop.hypotheses.org/
Hoplichthyidae Kaup 1873
Creators: name: Smith, W. Leo
name: Everman, Elizabeth
name: Richardson, Clara
Publisher: name: Zenodo
Year: 2018
Subjects: Biodiversity
Taxonomy
Animalia
Chordata
Scorpaeniformes
Hoplichthyidae

description: Hoplichthyidae Kaup, 1873   Type genus: Hoplichthys Cuvier in Cuvier and Valenciennes, 1829
 Sister taxon: Triglidae
 Concept and content: 17 species classified in one genus: Hoplichthys
 Phenotypic diagnosis: Middle portion of second circumorbital sensory canal bridge present with more than two sensory openings (character 3, state 3); basisphenoid absent (character 19, state 2); prootic and intercalar in contact (character 20, state 1); lateral lateral-line canal pore on pterotic absent (character 22, state 0); skinny lateral-line sensory canal between pterotic and preopercle present (character 23, state 1); Baudelot’s ligament absent (character 25, state 3); metapterygoid lamina absent (character 32, state 1); rudimentary to no space between metapteryoid and hyomandibula (character 33, state 1); first pharyngobranchial cartilaginous (character 41, state 1); tooth plate on second pharyngobranchial absent (character 42, state 1); dorsal spines slender (character 57, state 1); lower hypural plate and parhypural fused (character 71, state 1); hemal spine and third preural centrum fused (character 72, state 1); hemal spine and second preural centrum fused (character 73, state 1); levator externus III absent (character 89, state 1); levator posterior absent (character 90, state 1); gill opening wide (character 107, state 1); body lateral line with bony plates (character 109, state 2); spines on lateral-line scales present (character 110, state 1); body scales absent (character 111, state 1).
 Support statistics: This family was represented by a single taxon in the analysis, so it does not have bootstrap support values.
 Systematic comment: Familial and generic composition and species recognition follow Eschmeyer et al. (2017).
description: Published as part of Smith, W. Leo, Everman, Elizabeth & Richardson, Clara, 2018, Phylogeny and Taxonomy of Flatheads, Scorpionfishes, Sea Robins, and Stonefishes (Percomorpha: Scorpaeniformes) and the Evolution of the Lachrymal Saber, pp. 94-119 in Copeia 106 (1) on pages 117-118, DOI: 10.1643/CG-17-669, http://zenodo.org/record/13230683