cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Behavioural and microglial effect of cannabinoids in neuropathic pain
Creators: name: Davidson, Chloé E. D.
Publisher: name: Cumming School of Medicine
Year: 2022
Subjects: subject: Pain
subject: Chronic Pain
subject: Neuropathic Pain
subject: Cannabis
subject: Cannabinoids
subject: Neuroscience

description: Chronic pain is a disease affecting 1 in 5 Canadians and the leading cause of disability worldwide. Among the most debilitating forms of chronic pain is neuropathic pain, which is caused by injury or disease of the nervous system. Neuropathic pain is difficult to manage clinically because it is often resistant to strong analgesics including opioids. Since therapeutic options are limited, some patients resort to medical cannabis to alleviate pain symptoms. Pain is the most common medical reason to use cannabis and cannabinoids. However, the efficacy of cannabis for pain, as well as its potential health impacts, are not well defined. My project addresses this knowledge gap by characterizing the behavioural and cellular effects of cannabis in the rat spared nerve injury (SNI) model. This neuropathic pain model replicates the mechanical pain sensitivity reported in neuropathic pain patients, including mechanical allodynia, which is an abnormal sensitivity to tactile stimuli in which even light touch can elicit pain. Prior research shows that microglia, the resident immune cells of the central nervous system, play a central role in the development of chronic neuropathic pain after peripheral nerve injury in males. In this study, we assessed the effects of vaporized whole cannabis extract and a combination of THC and CBD on mechanical hypersensitivity in spared nerve injury (SNI) male and female Sprague-Dawley rats. I also investigated the effect of cannabinoid exposure on spinal microglia. I find that cannabis and cannabinoid extracts transiently reversed mechanical allodynia in the spared nerve injury model of neuropathic pain in a sex- and compound-dependent manner. Additionally, I demonstrate a compound-dependent effect of cannabinoids on microglial reactivity.
Raman Spectroscopy of Siderite with q-Gaussian and split-q-Gaussian analyses
Creators: name: Sparavigna, Amelia Carolina
Publisher: name: Zenodo
Year: 2024
Subjects: Raman spectroscopy
q-Gaussian functions

description:  

In a previous review, ChemRxiv, 2023, we have considered the iron oxides
and their related Raman spectra; in the review, fingerprints of Magnetite,
Maghemite, Hematite, Goethite, Lepidocrocite, Akaganeite and Siderite
have been given and the q-Gaussian fitting of some Magnetite, Hematite
and Lepidocrocite Raman bands has been proposed too. Here we consider
one of the Raman bands of Siderite and its fitted q-Gaussian and split-q-
Gaussian functions in depth. In the RRUFF database six natural siderite samples
 are included, and for three of them we can find Raman spectra obtained with
 different excitation lasers. These spectra allow us to investigate in detail the
 behavior of the fitted q-Gaussian curves. A discussion about the origin of
asymmetry is also proposed, relevant for the use of q-Gaussians and the
 interpretation of them in the framework of Kubo approach.
Differences in Kinetic Variables Between Injured and Uninjured Rearfoot Runners: A Hierarchical Cluster Analysis
Creators: name: Senevirathna, Benthara Hettiarachchige Angela Madushani
Publisher: name: Schulich School of Engineering
Year: 2022
Subjects: subject: Biomechanics
subject: Kinetics
subject: Running Injury
subject: Cluster analysis
subject: Engineering--Biomedical

description: Running is a popular form of physical activity with a surprisingly high incidence of running-related injuries. While the relationship between running related injuries and ground reaction forces has been investigated, a limitation of previous research is that the heterogeneity of movement patterns within a control group creates confounding factors between variables. A potential solution is to use unsupervised cluster-based analyses to group individuals with similar ground reaction force features and thus investigate differences between identified clusters. Thus, the aim of this study was to investigate whether homogenous clusters exist within a large cohort of injured and healthy runners. The results show that two homogeneous clusters were identified using hierarchical cluster analysis and no significant differences in demographic variables were observed, nor were the proportion of injured and healthy runners between the two clusters. Thus, while there appears to be evidence for two distinct homogeneous kinetic clusters within our large sample of injured and healthy runners, there is no association between these kinetic clusters and running-related injuries.
Calibration and evaluation of a motion measurement system for PET imaging studies
Creators: name: Wang, Junxiang
name: Wu, Ti
name: Iordachita, Iulian I.
name: Kazanzides, Peter
Publisher: name: arXiv
Year: 2023
Subjects: subject: Robotics (cs.RO)
subject: FOS: Computer and information sciences

description: Positron Emission Tomography (PET) enables functional imaging of deep brain structures, but the bulk and weight of current systems preclude their use during many natural human activities, such as locomotion. The proposed long-term solution is to construct a robotic system that can support an imaging system surrounding the subject's head, and then move the system to accommodate natural motion. This requires a system to measure the motion of the head with respect to the imaging ring, for use by both the robotic system and the image reconstruction software. We report here the design, calibration, and experimental evaluation of a parallel string encoder mechanism for sensing this motion. Our results indicate that with kinematic calibration, the measurement system can achieve accuracy within 0.5mm, especially for small motions.
description: arXiv admin note: text overlap with arXiv:2311.17863
Community Members' Experiences and Responses to the Extra Judicial Measures Community Referral Pilot Program in Atlantic Canada
Creators: name: Yazdani, Alhan
Publisher: name: Arts
Year: 2022
Subjects: subject: youth crime
subject: Youth Criminal Justice Act
subject: qualitative research
subject: extra judicial measures
subject: rural Canada
subject: restorative justice
subject: formal/informal debate
subject: role ambiguity
subject: Sociology
subject: FOS: Sociology

description: Restorative justice has become central to Canada’s responses to youth crime, especially under the Youth Criminal Justice Act (YCJA), which emphasizes significant alternative responses to the formal criminal justice system (Tomporowski et al., 2011). Restorative justice offers benefits that are argued to instill more robust cognitive transformation (i.e., a change in thinking about one’s actions in relation to a crime and the harm it caused particular parties and the wider community), and ultimately helps to instill safer communities and prevent crime (LeBel et al., 2008). In relation to youth crime in Canada, restorative justice plays a prominent role under the YCJA. Yet not all provinces have implemented restorative justice programs to the same degree. For this qualitative research, secondary sources were analyzed involving qualitative interviews with community volunteers who were part of a pilot Community Referral Program (CRP) that was implemented in Atlantic Canada in 2013. The tensions between formal and informal approaches to responding to crime are highlighted by the experiences of volunteers of the CRP, including community leaders, as well as how these tensions lead to role ambiguity and other obstacles. Shedding light on the experiences of volunteers, their challenges, and opportunities for improvement will help provide crucial knowledge to inform best practices going forward, and ultimately benefit all parties involved, as well as the wider community.
Supplementary Table 1. Missing data and imputation statistics
Creators: name: Proessl, Felix
Publisher: name: figshare
Year: 2021
Subjects: subject: 110602 Exercise Physiology
subject: FOS: Health sciences
subject: Neuroscience

description: VL: vastus lateralis, TMD: total mood disturbance, FDI: first dorsal interosseus, MVC: maximum voluntary contraction, D1: day 1, TMT: tactical mobility test, IGF1: insulin-like-growth factor 1, GH: growth hormone, BDNF: brain-derived neurotrophic factor.
The stellar IMF at very low metallicities
Creators: name: Dopcke, Gustavo
name: Glover, Simon C. O.
name: Clark, Paul C.
name: Klessen, Ralf S.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences
subject: J.2
subject: 85A05

description: The theory for the formation of the first population of stars (Pop III) predicts an initial mass function (IMF) dominated by high-mass stars, in contrast to the present-day IMF, which tends to yield mostly stars with masses less than 1 M_Sol. The leading theory for the transition in the characteristic stellar mass predicts that the cause is the extra cooling provided by increasing metallicity. In particular, dust can overtake H_2 as the leading coolant at very high densities. The aim of this work is to determine the influence of dust cooling on the fragmentation of very low metallicity gas. To investigate this, we make use of high-resolution hydrodynamic simulations with sink particles to replace contracting protostars, and analyze the collapse and further fragmentation of star-forming clouds. We follow the thermodynamic response of the gas by solving the full thermal energy equation, and also track the behavior of the dust temperature and the chemical evolution of the gas. We model four clouds with different metallicities (10^{-4}, 10^{-5}, 10^{-6} Z_Sol, and 0), and determine the properties of each cloud at the point at which it undergoes gravitational fragmentation. We find evidence for fragmentation in all four cases, and hence conclude that there is no critical metallicity below which fragmentation is impossible. Nevertheless, there is a clear change in the behavior of the clouds at Z = 10^{-5} Z_Sol, caused by the fact that at this metallicity, fragmentation takes longer to occur than accretion, leading to a flat mass function at lower metallicities.
description: 11 pages, 10 figues, submitted to ApJ. arXiv admin note: text overlap with arXiv:1101.4891
DataCite API Training
Creators: name: Stathis, Kelly
name: Bennett, Mike
Publisher: name: Zenodo
Year: 2023
Subjects: Training Session
DataCite API
DataCite REST API
DOI
Digital Object Identifier
DataCite's Open Training Days 2023

description: DataCite API Training Learn how to access DataCite's APIs, including how to retrieve, create, and update DOI metadata using the REST API. No API experience is necessary! A recording of the presentation can be found at: https://youtu.be/mh_r6ohJOac
Essays on real estate finance and economics : strategies for developments under uncertainty
Creators: name: You, Seung Dong
Publisher: name: University of British Columbia
Year: 2012

description: This thesis contains three essays on real estate finance and economics. Both chapter 2 and chapter 3 study a real estate developer's timing strategies under uncertainty and chapter 4 studies the ratio of housing price-to-income. Chapter 2 analyzes the effects of leverage on the timing of developments because most real estate developers depend heavily on leverage. In particular, it investigates the leverage effects on real estate developments that involve conversion of land from agricultural to urban use. Leverage matters for a developer who wants to optimize the timing of developments. Chapter 3 studies the effects of heterogeneity of real assets on the timing of developments because each property is unique and its value is likely to move together with values of neighboring properties. Heterogeneity matters for a developer who builds multiple properties in a project. Chapter 4 analyzes the price-to-income ratio which has been used widely as a measure for housing bubble. A cross-city comparison of price-to-income ratios can overestimate bubble in cities of high amenities.
Raman Spectroscopy of Siderite with q-Gaussian and split-q-Gaussian analyses
Creators: name: Sparavigna, Amelia Carolina
Publisher: name: Zenodo
Year: 2024
Subjects: Raman spectroscopy
q-Gaussian functions

description: In a previous review, in ChemRxiv, we have considered iron oxides and their Raman spectra. In the review, the Raman fingerprints of Magnetite, Maghemite, Hematite, Goethite, Lepidocrocite, Akaganeite and Siderite have been given, and the q-Gaussian fitting of some bands shown (Magnetite, Hematite and Lepidocrocite). Here we consider the q-Gaussian and the split-q-Gaussian fitting of the main Raman band of Siderite in depth. Siderite is an iron(II) carbonate, with the ideal chemistry FeCO3. In RRUFF database, we can find three Raman spectra with measured chemistry, so we can investigate the role of chemistry on fitted the q-Gaussian curves.
Measurement of the complete interaction force curve at the nanoscale
Creators: name: Rodrigues, Mario S.
name: Costa, Luca
name: Chevrier, Joel
name: Comin, Fabio
Publisher: name: arXiv
Year: 2012
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Instrumentation and Detectors (physics.ins-det)
subject: FOS: Physical sciences

description: The force between two interacting particles as a function of distance is one of the most fundamental curves in science. In this regard, Atomic Force Microscopy (AFM) represents the most powerful tool in nanoscience but with severe limits when it is to probe attractive interactions with high sensitivity. The Force Feedback Microscope (FFM) described here, removes from AFM the well known jump to contact problem that precludes the complete exploration of the interaction curve and the study of associated energy exchanges. The FFM makes it possible to explore tip-surface interactions in the entire range of distances with a sensitivity better than 1 pN. FFM stands out as a radical change in AFM control paradigms. With a surprisingly simple arrangement it is possible to provide the AFM tip with the right counterforce to keep it fixed at any time. The counterforce is consequently equal to the tip-sample force. The force, force gradient and damping are simultaneously measured independently of the tip position. This permits the measurement of energy transfer in thermodynamic transformations. Here we show some FFM measurement examples of the complete interaction force curve and in particular that the FFM can follow the nucleation of a water bridge by measuring the capillary attractive force at all distances, without jump to contact despite the large attractive capillary force. Real time combination of the measured parameters will lead to new imaging modalities with chemical contrast in different environments.
description: 4 pages, 4 figures
Frost- oder winterharte Kakteen und andere Sukkulenten
Creators: name: Januschkowetz, Michael
name: Engelbrecht, Vanessa
name: Nolding, Jana
Publisher: name: BU praktisch - Das Online-Journal für den Biologieunterricht
Year: 2019

description: Für manchen mag es etwas befremdend sein, sich vorzustellen, dass Kakteen und Sukkulenten das ganze Jahr frei ausgepflanzt im Garten kultiviert werden können - Pflanzen die man nur von den trockenen und heißen Standorten der USA oder Südafrikas kennt. Der Beitrag liefert eine Anleitung für einen winterfesten Sukkulentengarten in der Schule.
description: BU praktisch - Das Online-Journal für den Biologieunterricht, Bd. 2 Nr. 1 (2019): BU drinnen und draußen
Relativism, Constructivism, and Progress in Goodman and Kuhn
Creators: name: Lavergne, Veronika
Publisher: name: Arts
Year: 2022
Subjects: subject: Relativism
subject: Constructivism
subject: Constructionalism
subject: Nelson Goodman
subject: Thomas Kuhn
subject: Larry Lauden
subject: Radical Relativism
subject: Progress
subject: Philosophy
subject: FOS: Philosophy, ethics and religion

description: The purpose of my thesis will be to defend Goodman’s constructivism and Kuhn’s account of scientific development. In the first chapter, I will begin by describing Goodman’s constructivism and clarifying a few key ideas that are often misunderstood. Then I will describe Kuhn’s account of scientific development and explain how it is similar to Goodman’s constructivism. In the second chapter, I will present a few key criticisms of Kuhn’s account of scientific development and describe Kuhn’s responses to them. Following this, I will provide a brief analysis of Kuhn’s responses and argue that they are insufficient to respond to all of the criticisms. In the third chapter, I will put forward the same criticisms against Goodman’s constructivism and provide his responses to these criticisms. I will then compare Kuhn’s responses to Goodman’s responses to the criticisms, and argue that Goodman’s responses are much stronger. Following this, I will argue that Goodman’s responses, and his constructivism, could be used to strengthen Kuhn’s account of scientific development in a way that would enable him to adequately address the criticisms brought against his work. I will conclude my thesis by arguing that Goodman’s responses to the criticisms are stronger than Kuhn’s responses because Goodman accepts and defends the relativism in his work, while Kuhn attempts to dismiss and minimize the role that relativism plays in his account of scientific development.
DNA-Extraktion
Creators: name: Wenzel, Annkathrin
name: Röllke, Kerstin
Publisher: name: BU praktisch - Das Online-Journal für den Biologieunterricht
Year: 2019

description: Dieser Beitrag thematisiert eine Möglichkeit, Schülerinnen und Schülern der 9. und 10. Jahrgangsstufe einen kleinen Einblick in einen biomedizinischen Kontext zu geben und dabei selber experimentieren zu können. Grundlage ist ein Schnupperkurs des teutolab-biotechnologie, welcher sich mit der medizinischen Anwendung einer DNA-Extraktion befasst. Es werden neben dem benötigten Hintergrundwissen auch verschiedene Variationen für eine praktische, individuelle Umsetzung in der Schule aufgezeigt.
description: BU praktisch - Das Online-Journal für den Biologieunterricht, Bd. 2 Nr. 1 (2019): BU drinnen und draußen
How to ensure semantic interoperability between FAIR digital objects
Creators: name: Ojsteršek, Milan
Publisher: name: Zenodo
Year: 2023
Subjects: FAIR digital objects
Metadata
interoperability
semantic artefact
metadata crosswalks
metadata mappings
minimum metadata set recommendation for metadata interoperability
Genomics Data Infrastructure
GDI
Slovenian open access infrastructure

description: FAIR Digital Objects (FDOs) are datasets, publications, software, services, workflows, lab notebooks, and other digital results of research that are easily discoverable by humans and machines. FDOs are accessible to anyone with permission, interoperable with other digital objects regardless of their format or software, and reusable without modification for the same or different purposes. The semantic interoperability of FDOs is achieved by using common vocabularies and ontologies to define the meaning of data elements. These vocabularies and ontologies provide a common understanding of the data, even if it is stored in different systems or formats. We will first outline the minimum set of metadata required for FDOs. The lecture will focus on the National Open Science Infrastructure, what processes we have put in place, and how we have achieved semantic interoperability of FDOs within this infrastructure. Finally, we will outline the European Genomic Data Infrastructure (GDI) project, where we are working to establish a federated, sustainable, and secure infrastructure that will provide access to genomic and related phenotypic and clinical data across Europe, with controlled access for clinicians, public and private sector researchers, and health policymakers. Non-sensitive and aggregated data will be openly discoverable through the federated query system.
Collective Excitations and Stability of the Excitonic Phase in the Extended Falicov--Kimball Model
Creators: name: Golosov, D. I.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We consider the excitonic insulator state (often associated with electronic ferroelectricity), which arises on the phase diagram of an extended spinless Falicov--Kimball model (FKM) at half-filling. Within the Hartree--Fock approach, we calculate the spectrum of low-energy collective excitations in this state up to second order in the narrow-band hopping and/or hybridisation. This allows to probe the mean-field stability of the excitonic insulator. The latter is found to be unstable when the case of the pure FKM (no hybridisation with a fully localised band) is approached. The instability is due to the presence of another, lower-lying ground state and not to the degeneracy of the excitonic phase in the pure FKM. The excitonic phase, however, may be stabilised further away from the pure FKM limit. In this case, the low-energy excitation spectrum contains new information about the properties of the excitonic condensate (including the strongly suppressed critical temperature).
description: 8 pages, LaTeX-Revtex, 3 PostScript figures, minor corrections. Phys. Rev. B, in press
Attitude Estimation Methods Using Low-cost GNSS and MEMS MARG Sensors and Their Integration
Creators: name: Ding, Wei
Publisher: name: Schulich School of Engineering
Year: 2022
Subjects: subject: Geodesy
subject: Remote Sensing

description: For low-cost magnetic, angular rate, and gravity (MARG) sensors based on the microelectromechanical system (MEMS) technology, the sensor errors and measurement noises are significantly large. Attitude errors by integrating gyro data accumulate rapidly. When the vehicle is quasi-static, the roll and pitch angles can be determined by accelerometer measurements which use the local gravity as the reference. The magnetometer is resorted to generate heading information by measuring the geomagnetic field. However, the accelerometer and magnetometer measurements can be deteriorated by the vehicle maneuver and ambient artificial magnetic disturbances, respectively. Thereby a quaternion-based error state Kalman filter (ESKF) is developed to fuse the MEMS MARG sensor measurements for accuracy improved attitude estimation. The error state vector constitutes attitude error and gyro bias variation. the gyro-measured angular rates are used to continuously propagate the vehicle’s three-dimensional attitude quaternion in its sampling rate, whilst accelerometer and magnetometer measurements are employed for the state correction. Disturbances such as external accelerations and magnetic anomalies are excluded, and the measurement noise covariance matrix is adaptively adjusted according to the innovations. Global navigation satellite system (GNSS) based attitude estimation shows time-independent error characteristics. The pitch and heading angles can be determined using a single GNSS antenna based on the time differenced carrier phase (TDCP) observations or derived from a moving baseline formed between two firmly mounted GNSS antennas. The major challenges of the former include cycle slips, carrier phase discontinuity, and slow vehicular velocity which should be excluded from attitude estimation. Whereas the integer ambiguity resolution is indispensable for the latter, the baseline length constrained least-squares ambiguity decorrelation adjustment (C-LAMBDA) method can be applied. The GNSS/MARG sensors integrated attitude estimation methods are investigated to exploit the complementary merits of the high precision of MARG sensor during the short period and the performance stability of GNSS over the long term. The ESKF developed for the MARG sensor is extended to utilize the GNSS-derived heading and pitch angles for additional measurement updates. The solution continuity is guaranteed by the MARG sensor alone during the periods when the GNSS-derived attitude angles are unavailable.
Dark matter halo's and self similarity
Creators: name: Alard, C.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: This papers explores the self similar solutions of the Vlasov-Poisson system and their relation to the gravitational collapse of dynamically cold systems. Analytic solutions are derived for power law potential in one dimension, and extensions of these solutions in three dimensions are proposed. Next the self similarity of the collapse of cold dynamical systems is investigated numerically. The fold system in phase space is consistent with analytic self similar solutions, the solutions present all the proper self-similar scalings. An additional point is the appearance of an $x^{-(1/2)}$ law at the center of the system for initial conditions with power law index larger than $-(1/2)$. It is found that the first appearance of the $x^{-(1/2)}$ law corresponds to the formation of a singularity very close to the center. Finally the general properties of self similar multi dimensional solutions near equilibrium are investigated. Smooth and continuous self similar solutions have power law behavior at equilibrium. However cold initial conditions result in discontinuous phase space solutions, and the smoothed phase space density looses its auto similar properties. This problem is easily solved by observing that the probability distribution of the phase space density $P$ is identical except for scaling parameters to the probability distribution of the smoothed phase space density $P_S$. As a consequence $P_S$ inherit the self similar properties of $P$. This particular property is at the origin of the universal power law observed in numerical simulation for $ρ/{σ^3}$. The self similar properties of $P_S$ implies that other quantities should have also an universal power law behavior with predictable exponents. This hypothesis is tested using a numerical model of the phase space density of cold dark matter halo's, an excellent agreement is obtained.
description: Final version
HMF-Bestimmung und Honigqualität
Creators: name: Höhne, Benjamin
name: Weyers, Bruno
name: Heil, Ingeborg
name: Bohrmann, Johannes
Publisher: name: BU praktisch - Das Online-Journal für den Biologieunterricht
Year: 2019

description: Der Gehalt von Hydroxymethylfurfural (HMF) in Honig ist ein Parameter zur Beurteilung seiner Frische und einer sachgemäßen Wärmebehandlung beim Abfüllen. Die qualitative und quantitative Bestimmung von HMF werden als Schulexperimente vorgestellt.
description: BU praktisch - Das Online-Journal für den Biologieunterricht, Bd. 2 Nr. 1 (2019): BU drinnen und draußen
Haie
Creators: name: Nolding, Jana
name: Grotjohann, Norbert
Publisher: name: BU praktisch - Das Online-Journal für den Biologieunterricht
Year: 2019

description: Der Beitrag gibt einen kurzen Überblick über die Biologie der Haie. Aufgrund der gestiegenen Nachfrage nach Haiprodukten, vor allem Flossen, ist diese sehr alte Tiergruppe akut vom Aussterben bedroht. Das Thema wird, unter besonderer Berücksichtigung des Finnings, für Ökologiekurse der Oberstufe aufgearbeitet. Wir möchten außerdem Gerhard Wegner sowie dem Fotografen und Entwickler der WHALEGUIDE App Ralf Kiefner für das zur Verfügung stellen ihrer Fotos danken.
description: BU praktisch - Das Online-Journal für den Biologieunterricht, Bd. 2 Nr. 1 (2019): BU drinnen und draußen
Der Fischkonsum und seine Auswirkungen auf die Meere
Creators: name: Schmäing, Till
name: Grotjohann, Norbert
Publisher: name: BU praktisch - Das Online-Journal für den Biologieunterricht
Year: 2019

description: Der vorliegende Beitrag analysiert eingangs aus fachwissenschaftlicher Perspektive das Problemfeld der Überfischung der Meere. Dazu werden aktuelle Entwicklungen in der Fischerei (1.1) dargestellt, das allgemeine Problem näher betrachtet (1.2) sowie Gegenmaßnahmen herausgestellt und bewertet (1.3). Im Anschluss erfolgt eine Einbettung des Themas in den schulischen Kontext anhand eines exemplarischen Kernlehrplanbezugs (2.1) und eine didaktische Kommentierung der im Anhang befindlichen Unterrichtsmaterialien (2.2).
description: BU praktisch - Das Online-Journal für den Biologieunterricht, Bd. 2 Nr. 1 (2019): BU drinnen und draußen
Bulk Neutrinos as an Alternative Cause of the Gallium and Reactor Anti-neutrino Anomalies
Creators: name: Machado, P. A. N.
name: Nunokawa, H.
name: Santos, F. A. Pereira dos
name: Funchal, R. Zukanovich
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We consider an alternative explanation for the deficit of nu_e in Ga solar neutrino calibration experiments and of the anti nu_e in short baseline reactor experiments by a model where neutrinos can oscillate into sterile Kaluza-Klein modes that can propagate in compactified sub-micrometer flat extra dimensions. We have analyzed the results of the Gallium radioactive source experiments and 19 reactor experiments with baseline shorter than 100 m, and showed that these data can be fitted into this scenario. The values of the lightest neutrino mass and of the size of the largest extra dimension that are compatible with these experiments are mostly not excluded by other neutrino oscillation experiments.
description: matches PRD version, title changed, 7 pages, 2 figures
Mobility Control Using CNC Stabilized Carbon Dioxide Foams
Creators: name: Etemad, Sahand
Publisher: name: Schulich School of Engineering
Year: 2022
Subjects: subject: Foam drainage
subject: Half-life
subject: Cellulose nanocrystal
subject: Plateau boarder
subject: Empirical models
subject: Foam stability
subject: CO2 foam
subject: Nanoparticle stabilized foam
subject: Foam/oil interactions
subject: Emulsification
subject: Surfactants
subject: Mobility control
subject: Applied Sciences
subject: Energy
subject: Engineering
subject: Engineering--Chemical
subject: Engineering--Environmental
subject: Engineering--Petroleum

description: CO2 enhanced oil recovery is considered a practical technique to improve oil production, but also an option to alleviate carbon emission problems through CO2 capture and storage in deep geologic formations. Use of CO2 foam is a solution to poor gas sweep efficiency by reducing the gas phase mobility. The efficiency of the conventionally surfactant stabilized foams is jeopardized under reservoir conditions. Using biomass-derived materials to fortify foam is new for oil production. The application of biomass-derived materials such as Cellulose Nanocrystals (CNC) as the basis for generating foams will open a new market for Alberta’s forestry and bio industries. InnoTech Alberta is producing CNC from wood pulp and paper processing waste, the most common feedstock for CNC. There is a lack of research and technology demonstrating the advantage of biomass-derived nanomaterials at reservoir conditions for CO2 EOR processes. We experimentally investigate the performance of a foam system consisting of a surfactant with the addition of CNC for operation at up to 2.8MPa pressure and 115℃ temperature. Experiments are conducted under static and dynamic conditions. Foam volume, V(t), shows early linear and the later nonlinear drainage rate dependence with time. CNC in the continuous phase stabilize the CO2 in water foams by enclosing the droplets and reducing the collision. During a foam flood, oil in water emulsion stabilized by CNC, which initially appeared in the foam structure. Stable foam is generated via interactions of inexpensive CNC and cationic surfactants with concentration as low as 0.05wt%. Foamability defines as the initial capacity of the foaming solution to form foam. Half-lives and mobility reduction factors for the CNC foams were higher than the surfactant foams. Gas-water interfaces and liquid films within the foam structure showed more stability by adding CNC to surfactant solutions. CNC fortified the liquid films by blocking the liquid flow and increasing the viscosity. Additionally, CNC-stabilized foam had lower liquid drainage rate. The results of this work will provide baseline information for other research on CNC based fluids for underground applications. The target of this study is CO2 storage and flooding in conventional, hot conventional and viscous oil reservoirs.
WHALEGUIDE - Wale bestimmen leichtgemacht
Creators: name: Grotjohann, Norbert
Publisher: name: BU praktisch - Das Online-Journal für den Biologieunterricht
Year: 2019

description: Der bekannte Tierfilmer und Fotograf Ralf Kiefner hat mit seiner Frau, Andrea Ramalho (Biologin) eine empfehlenswerte, umfangreiche und autodidaktische Applikation über Wale und Delfine entwickelt, mit der es möglich ist 67 Wal- und Delfin-Arten zu bestimmen. Die umfangreichen Informationen sind leicht verständlich erklärt und ermöglichen einen spannenden und abwechslungsreichen Biologieunterricht über diese abwechslungsreiche Tiergruppe. Die Schülerinnen und Schüler werden auf spielerische und unterhaltsame Weise zum Lernen motiviert. Die Whaleguide App gibt es im App Store (für iPad oder iPhone) und im PlayStore (für Android Phones und Tablets) ab Euro 8,99 für die deutsche und englische Sprachversion (auch für den Englischunterricht geeignet!), Screening über Beamer ist möglich. Weitere Infos und Demo-Video finden Sie unter:
description: BU praktisch - Das Online-Journal für den Biologieunterricht, Bd. 2 Nr. 1 (2019): BU drinnen und draußen
Editorial
Creators: name: Admin, InterDisciplines
name: Petermann, Ursula Mense
name: Welskopp, Thomas
name: Schlerka, Sebastian Matthias
Publisher: name: InterDisciplines. Journal of History and Sociology
Year: 2018

description: InterDisciplines. Journal of History and Sociology, Vol 9 No 2 (2018): Social History - Historical Sociology
The Effect of Gravitational Tidal Forces on Renormalized Quantum Fields
Creators: name: Hollowood, Timothy J.
name: Shore, Graham M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: The effect of gravitational tidal forces on renormalized quantum fields propagating in curved spacetime is investigated and a generalisation of the optical theorem to curved spacetime is proved. In the case of QED, the interaction of tidal forces with the vacuum polarization cloud of virtual e^+ e^- pairs dressing the renormalized photon has been shown to produce several novel phenomena. In particular, the photon field amplitude can locally increase as well as decrease, corresponding to a negative imaginary part of the refractive index, in apparent violation of unitarity and the optical theorem. Below threshold decays into e^+ e^- pairs may also occur. In this paper, these issues are studied from the point of view of a non-equilibrium initial-value problem, with the field evolution from an initial null surface being calculated for physically distinct initial conditions and for both scalar field theories and QED. It is shown how a generalised version of the optical theorem, valid in curved spacetime, allows a local increase in amplitude while maintaining consistency with unitarity. The picture emerges of the field being dressed and undressed as it propagates through curved spacetime, with the local gravitational tidal forces determining the degree of dressing and hence the amplitude of the renormalized quantum field. These effects are illustrated with many examples, including a description of the undressing of a photon in the vicinity of a black hole singularity.
description: 76 pages, jheppub.sty, 10 figures, small corrections. arXiv admin note: text overlap with arXiv:1006.0145
Symmetry breaking and restoration in Lifshitz type theories
Creators: name: Farakos, K.
name: Metaxas, D.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We consider the one-loop effective potential at zero and finite temperature in scalar field theories with anisotropic space-time scaling. For $z=2$, there is a symmetry breaking term induced at one-loop at zero temperature and we find symmetry restoration through a first-order phase transition at high temperature. For $z=3$, we considered at first the case with a positive mass term at tree level and found no symmetry breaking effects induced at one-loop, and then we study the case with a negative mass term at tree level where we cannot conclude about symmetry restoration effects at high temperature because of the imaginary parts that appear in the effective potential for small values of the scalar field.
description: 11 pages, 2 figures, version accepted in Physics Letters B
High-resolution spatiotemporal transcriptomic maps of developing Drosophila embryos and larvae
Creators: name: 吕天航(Tianhang Lv)
Publisher: name: CNGB
Year: 2021
Subjects: Transcriptome or Gene expression
Monoisolate
Model organism

description: phila genome is relatively smaller and less redundant, yet largely conserved with mammals, making it a productive model in studies of embryogenesis, cell signaling, disease mechanisms, etc. Spatial gene expression pattern is critical for understanding of complex signaling pathways and cell-cell interactions, whereas temporal gene expression changes need to be tracked during highly dynamic activities such as tissue development and disease progression. Systematic studies in Drosophila as a whole are still impeded by lack of these spatiotemporal transcriptomic information. Drosophila embryos and tissues are of relatively small size, limiting the application of current technologies to comprehensively resolve their spatiotemporal gene expression patterns. Here, utilizing SpaTial Enhanced REsolution Omics sequencing (Stereo-seq), we dissected the spatiotemporal transcriptomic changes of developing Drosophila with high resolution and sensitivity. Our data recapitulated the spatial transcriptomes of embryonic and larval development in Drosophila. With these data, we identified known and previously undetected subregions in several tissues during development. We also analyzed gene regulatory networks, revealing known and potential regulatory networks of transcription factors within their topographic background. We further demonstrated that Stereo-seq data can be used for 3D reconstruction of Drosophila embryo spatial transcriptomes. Our data provides Drosophila research community with useful resources of spatiotemporally resolved transcriptomic information across developmental stages.
Theoretical Bounds on New Four-Fermion Interactions and TeV Scale Physics
Creators: name: Bhattacharya, Tanmoy
name: Gupta, Rajan
name: Joseph, Anosh
name: Lin, Huey-Wen
name: Cohen, Saul D.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The standard model weak interactions can be described by four-fermion V-A operators at low energies. New physics at the TeV scale can, however, generate the other Lorentz structures. In this talk, we review the constraints on such interactions from nuclear and hadronic decays, as well as from collider searches. Currently the most stringent bounds come from the analysis of the 0+ to 0+ nuclear and the pi to e nu gamma radiative pion decays. In the near future, the ultracold neutron beta decay experiments and the direct LHC measurements will compete in setting the most stringent bounds, provided, however, that the neutron-to-proton non-perturbative transition matrix elements can be calculated to a level of 10-20% accuracy.
description: Talk presented at the XXIXth International Symposium on Lattice Field Theory, Squaw Valley, Lake Tahoe, California, USA, July 10-16, 2011
A Fine Balance: Weighing the Roles that Environmental and Economic Factors Play in the Formation of Climate Change Perception Among Farmers in Alberta, Canada
Creators: name: Koots, Simon Mackenzie
Publisher: name: Arts
Year: 2022
Subjects: subject: climate change
subject: farmers
subject: alberta
subject: risk
subject: perceptions of climate change
subject: Anthropology
subject: FOS: Sociology
subject: Anthropology--Cultural

description: Climate change poses a unique set of challenges to farmers. Agriculture is a leading source of greenhouse gas emissions while farmers are also particularly vulnerable to the risks of climate change due to their dependence on particular weather patterns. This means that both mitigation and adaptation are likely necessary for farmers to successfully navigate climate change. The province of Alberta in Canada provides an interesting case-study of farmers’ relationship with climate change due to widespread political conservatism and regional dependence on oil and gas royalties, two factors which have been shown to influence climate change belief. Studies have shown strong relationships between climate change perception, mitigative behaviour, and adaptive behaviour, but previous research on these topics in Alberta has relied on survey and polling data. This has left a gap in the literature on anything beyond a quantitative analysis of farmers’ perceptions. This study aims to fill this gap by exploring perceptions of climate change among farmers in Alberta from a qualitative perspective. This study looks at how Albertan farmers perceive climate change and why they perceive it in the way that they do. To answer these questions, semi-structured interviews were conducted with 12 participants across three regions of Alberta. Interview transcripts were then coded using NVivo and a thematic and discourse analysis of the material ensued. The results show that belief in anthropogenic climate change is mixed while concern for climate change is low. This suggests that climate change belief is a poor predictor of climate change concern among Albertan farmers. Instead, farmers appear to see climate change as it relates to their own economic concerns. More specifically, their focus remains on immediate and concrete economic risks rather than the distant, abstract risks of climate change. Despite low levels of climate change concern, this study does argue that support for mitigation may be higher than support for adaptation, though economic constraints are likely acting as a strong barrier to both.
AQLLI SHAHAR (SMART CITY) TIZIMLARI ORQALI EKOLOGIK MONITORING VA RESURSLARNI TEJASH
Creators: name: Qodirov, Farrux
name: Turayeva, Sabrina
Publisher: name: Zenodo
Year: 2025

description: Aqlli shahar (Smart City) tizimlari zamonaviy texnologiyalarni, masalan, IoT (Internet of Things), katta ma'lumotlar (Big Data), sun'iy intellekt (AI) va boshqa raqamli tizimlarni qo‘llash orqali shaharlarni samarali boshqarishni maqsad qilgan yangi tendensiyani ifodalaydi. Aqlli shaharlar nafaqat urbanizatsiya va rivojlanishni qo‘llab-quvvatlash, balki ekologik barqarorlikni ta'minlash va resurslarni tejashga ham yo‘naltirilgan. Ushbu maqolada aqlli shahar tizimlarining ekologik monitoring va resurslarni tejashdagi roli tahlil qilinadi.
Development of onion oil-based organo-hydrogel for drug delivery material
Creators: name: Alpaslan, Duygu
name: Dudu, Tuba Erşen
name: Aktas, Nahit
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biochemistry
subject: Space Science
subject: Pharmacology
subject: Biotechnology
subject: 59999 Environmental Sciences not elsewhere classified
subject: FOS: Earth and related environmental sciences
subject: 39999 Chemical Sciences not elsewhere classified
subject: FOS: Chemical sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences

description: Agar and Glycerol (AG) based Organo-hydrogels containing different cross-linkers and different amounts of Onion Oil were prepared in order to examine the in vitro release of the antibiotic drug Ceftriaxone and the anti-carcinogenic drug Carboplatin. At preparation of the organo-hydrogels was used free radical polymerization technique in the emulsion media. As a control group, Agar-Glycerol (AG) gel and Agar-Glycerol (p (AG-m) and p (AG-g)) hydrogels were synthesized. When balance swelling rates of organo-hydrogels were examined, different swelling behaviors were observed in different solvent environments. When FTIR spectra of gel, hydrogel and organo-hydrogels were examined, it was observed that Onion Oil added different bonds to the structure or deepened existing bonds. It was observed that the drug release amount of Gel, hydrogel and Organo-hydrogels with different properties changed with cross-linker type, ambient pH and drug-polymer interactions. For this purpose, organo-hydrogels were produced containing onion oil in the mass proportion of three different. In order to determine the effect of ambient pH on release rate and amount of drug released, drug release at 4 different pH (at 2.0, 5.5, 7.4 and 8.0) was examined from drug-loaded organo-hydrogels. In organo-hydrogels containing different amounts of onion oil, it was observed that the rate of release changed as the onion oil rate increased. When the amount of the release of p(AG-m-OO) and p(AG-g-OO) organo-hydrogels was compared, it was observed that the rate of release of p AG-g-OO) organo-hydrogels was higher. This is due to electrostatic interactions between the organo-hydrogels synthesized with different crosslinkers and different amounts of onion oil, and the drug. When Ceftriaxone and Carboplatin drug release kinetics were applied, it was found that drug release of organo-hydrogels conformed to Higguci (HM) and Korsmeyer-Peppas (KM) models.
Zooming in on female ice sports: Video-analyses examining head contacts and suspected injuries in ringette and ice hockey
Creators: name: Heming, Emily
Publisher: name: Kinesiology
Year: 2022
Subjects: subject: Ringette
subject: Ice hockey
subject: Female
subject: Athlete
subject: Youth
subject: Athletic injury
subject: Concussion
subject: Video-analysis
subject: Epidemiology
subject: Public Health

description: This MSc thesis includes three video-analysis studies focused on ringette and female ice hockey players. The first study used video-analysis to compare rates of game-related player-to-player physical contacts (PCs) including bodychecking, head contacts (HC; direct HC1 and indirect HC2), and suspected injuries between university-level ringette and female ice hockey competition. The main results demonstrate that ringette had higher rates of bodychecking, HCs, and suspected injuries compared to female ice hockey. Despite prohibition of bodychecking and HC1s, the proportion of bodychecks and HC1s that were assessed as penalties were low for both sports. The second study evaluated the same PC metrics in the elite youth population of ringette (U16AA) and female ice hockey (U15AA). The main results again demonstrate higher rates of bodychecking, HCs, and suspected injuries in ringette compared to female ice hockey, with low proportions of bodychecks and HC1s penalized. The third and final study evaluated PC metrics in youth ringette across two age groups (U16 and U19), two levels of play (A and AA), and three game types (regular season, provincials, and nationals). Overall, high rates of bodychecking and HCs were found in this population, with low proportions of bodychecks and HC1s penalized. There were no differences in rates of bodychecks or HCs between age groups. A lower rate of HC2s were found in AA when comparing to A. When evaluating game type, higher rates of bodychecks were found in provincials and nationals compared to regular season, and higher rates of HCs were found in provincials compared to nationals. Bodychecking was the most common mechanisms for suspected concussions (primarily resulting in an HC2) and non-concussion injuries. Overall, these studies reported high rates of bodychecking, HCs, and suspected injuries (including concussions) in ringette resulting in significant opportunities for future injury prevention research.