cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
The effect of muscle length on transcranial magnetic stimulation induced-relaxation rate in the plantar flexors
Creators: name: Yacyshyn, Alexandra F.
Publisher: name: University of British Columbia
Year: 2016

description: Muscle relaxation rate is an important intrinsic contractile property that influences the neural drive necessary to achieve a desired force. Most relaxation data are obtained at rest through evoked contractions; however, the application of transcranial magnetic stimulation (TMS) during a maximal voluntary contraction (MVC) allows for a more functionally-relevant measurement of muscle relaxation. PURPOSE: The purpose of this study was to determine if TMS is a sufficiently sensitive technique to detect changes in relaxation rate with changes in muscle length. A secondary purpose was to qualitatively compare the relaxation rate of whole muscle torque to relaxation rates of single fascicles and the muscle-tendon junction (MTJ) acquired using ultrasound imaging. METHODS: Eleven males (24.8 ± 7.0 years; mean ± SD) performed 21 brief (~3s) isometric plantar flexor MVCs in a prone position at full knee extension, pseudo-randomized between 20° dorsiflexion (DF), a neutral ankle position, and 30° plantar flexion (PF). During each MVC, high-intensity TMS (80% stimulator output) was delivered to the motor cortex; ultrasound video recordings captured medial gastrocnemius (MG) fascicle and MTJ length changes. Peak relaxation rate was calculated to be the steepest slope of the TMS-induced drop in torque or rate of length change for MG fascicles and MTJ. RESULTS: MVC torque was greater in DF (182.0 ± 40.7 Nm) compared to neutral (147.7 ± 18.9 Nm) and in the neutral compared to PF position (62.2 ± 9.6 Nm). Plantar flexor relaxation rate was slower at PF (-804.02 ± 161.91 Nm/s) compared to neutral and DF (-1895.90 ± 298.31 and -2007.62 ± 692.11 Nm/s, respectively). Similarly, MG fascicle relaxation rate was slower at PF (-2.80 ± 1.10 cm/s) compared to neutral and DF (-5.35 ± 1.10 and -4.81 ± 1.87 cm/s, respectively). Relaxation rate of the MTJ did not differ with ankle angle (p = 0.06). CONCLUSIONS: Absolute relaxation rate was markedly slower when the plantar flexor muscles were shortened, indicating the TMS-induced relaxation technique is sufficiently sensitive to detect changes in muscle length. Comparable results were obtained from single fascicles, indicating that ultrasound imaging is suitable for the measurement of evoked contractile properties during voluntary contraction.
From the Kinetic Theory of Gases to Continuum Mechanics
Creators: name: Golse, François
Publisher: name: arXiv
Year: 2010
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 82C40, 35Q20, 35Q30, 35Q31, 76D07

description: Recent results on the fluid dynamic limits of the Boltzmann equation based on the DiPerna-Lions theory of renormalized solutions are reviewed in this paper, with an emphasis on regimes where the velocity field behaves to leading order like that of an incompressible fluid with constant density.
description: 13 pages, 27th International Symposium on Rarefied Gas Dynamics (Pacific Grove, California, USA), Harold Grad Lecture
Concept for controlled transverse emittance transfer within a linac ion beam
Creators: name: Groening, Lars
Publisher: name: arXiv
Year: 2011
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: For injection of beams into circular machines with different horizontal and vertical emittance acceptance, the injection efficiency can be increased if these beams are flat, i.e. if they feature unequal transverse emittances. Generation of flat electron beams is well known and has been demonstrated already in beam experiments. It was proposed also for ion beams that were generated in an Electron Cyclotron-Resonance (ECR) source. We introduce an extension of the method to beams that underwent charge state stripping without requiring their generation inside an ECR source. Results from multi-particle simulations are presented to demonstrate the validity of the method.
description: 23 pages (preprint style), 14 Figures, submitted to PRST-AB
Additional file 1 of Asymptomatic malaria and hepatitis B do not influence cytokine responses of persons involved in chronic sedentary activities
Creators: name: Nsoh Godwin Anabire
name: Aryee, Paul Armah
name: Zulka Ziblim
name: Suurbaar, Jonathan
name: Ansah, Felix
name: Helegbe, Gideon Kofi
Publisher: name: figshare
Year: 2020
Subjects: subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: 110309 Infectious Diseases

description: Additional file 1. Socio-demographic characteristics of the study participants (n = 400).
Renormalisation of the non-anticommutativity parameter at two loops
Creators: name: Jack, I.
name: Purdy, R.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We present evidence that the non-anticommutativity parameter for the N=1/2 supersymmetric SU(N)XU(1) gauge theory is unrenormalised through two loops.
description: 16 pages, 4 figures, introduction extended
Additional file 1 of Can we achieve better recruitment by providing better information? Meta-analysis of ‘studies within a trial’ (SWATs) of optimised participant information sheets
Creators: name: Madurasinghe, Vichithranie W.
name: Bower, Peter
name: Eldridge, Sandra
name: Collier, David
name: Graffy, Jonathan
name: Treweek, Shaun
name: Knapp, Peter
name: Parker, Adwoa
name: Rick, Jo
name: Salisbury, Chris
name: Man, Mei See
name: Torgerson, David
name: Sheridan, Rebecca
name: Sullivan, Frank
name: Cockayne, Sarah
name: Dack, Charlotte
Publisher: name: figshare
Year: 2021
Subjects: subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: Additional file 1: Table S1. Details of the unpublished Help Diabetes SWAT
Silent supporters : understanding clients' lived experiences of animal-assisted therapy in counselling
Creators: name: Owen, Jessica
Publisher: name: University of British Columbia
Year: 2016

description: The human-animal bond has long been a topic of interest for both researchers and clinicians. There are many studies that support the benefits of animals with regards to humans’ psychological and physical wellbeing, such as improved mental and physical health in pet owners and the use of animals in paramedical practices (e.g., Rector, 2005; Souter & Miller). However, although therapists are engaging animals in their practice all over the world, there is no empirical research looking to understand clients’ experiences of Animal-Assisted Therapy (AAT) in a counselling setting. This was the purpose of the current study. An interpretive phenomenological research design was used. Six adults who had previously been clients of an AAT therapist were interviewed, and their time with an AAT practitioner ranged from 1 to 7 months. The resulting transcriptions were analysed using Langdridge’s (2007) four stages of thematic analysis. Five unifying themes emerged across participant experiences, including: A Comfortable Environment, Animal Behaviour and Characteristics, Human-Animal Relationships, Intrapersonal Experience, and Engagement in Therapy. Three of these five themes also included sub-themes. This study contributes to the current literature by exploring the previously unheard perspective of AAT clients and inviting further discussion on how clients perceive and interpret this unique approach to counselling. Future research regarding AAT and counselling are also discussed, as well as implications for counselling practice.
Additional file 1 of Is self-reported depression, HIV status, COVID-19 health risk profile and SARS-CoV-2 exposure associated with difficulty in adhering to COVID-19 prevention measures among residents in West Africa?
Creators: name: Folayan, Morenike Oluwatoyin
name: Abeldaño Zuniga, Roberto Ariel
name: Abeldaño, Giuliana Florencia
name: Quadri, Mir Faeq Ali
name: Jafer, Mohammed
name: Yousaf, Muhammad Abrar
name: Ellakany, Passent
name: Nzimande, Ntombifuthi
name: Ara, Eshrat
name: Al-Khanati, Nuraldeen Maher
name: Khalid, Zumama
name: Lawal, Folake
name: Roque, Mark
name: Lusher, Joanne
name: Popoola, Bamidele O.
name: Khan, Abeedha Tu-Allah
name: Ayanore, Martin Amogre
name: Gaffar, Balgis
name: Virtanen, Jorma I.
name: Aly, Nourhan M.
name: Okeibunor, Joseph Chukwudi
name: El Tantawi, Maha
name: Nguyen, Annie Lu
Publisher: name: figshare
Year: 2022
Subjects: subject: Medicine
subject: Biotechnology
subject: Sociology
subject: FOS: Sociology
subject: Cancer
subject: Mental Health
subject: Infectious Diseases
subject: FOS: Health sciences

description: Additional file 1. List of countries in West Africa number of respondents included in the analysis.
N-Butyl-2-Cyanoacrylate Embolisation of a renal artery pseudoaneurysm after partial nephrectomy
Creators: name: Heberlein, Wolf
Publisher: name: EURORAD
Year: 2013
Subjects: subject: Kidney
subject: CT-Angiography
subject: Catheter arteriography
subject: Embolisation
subject: Trauma

description: Clinical History Image Findings Discussion Find Diagnosis Differential Diagnosis
description: female, 72 years
description: Clinical History: A 72-year-old female patient presented with an incidentally found renal tumour of the left kidney. Histology proved a chromophobe oncocytoma and she underwent robotic assisted laparoscopic partial nephrectomy. The patient was now referred for worsening le... Final Diagnosis: Successful embolisation of a post-surgical renal artery pseudoaneursym using NBCA glue.
Additional file 1 of Comparison of regional characteristics of land precipitation climatology projected by an MRI-AGCM multi-cumulus scheme and multi-SST ensemble with CMIP5 multi-model ensemble projections
Creators: name: Ito, Rui
name: Tosiyuki Nakaegawa
name: Izuru Takayabu
Publisher: name: figshare
Year: 2020
Subjects: subject: Oceanography
subject: FOS: Earth and related environmental sciences
subject: Atmospheric Sciences

description: Additional file 1: Table S1. CMIP5 models used in this study. (Retrieved from https://cmip.llnl.gov/cmip5/availability.html on May 23, 2019). Figure S1. As in Fig. 4 but for (a) JJA mean precipitation and (b) DJF mean precipitation. Figure S2. As in Fig. 5 but for (a) JJA mean precipitation and (b) DJF mean precipitation (%). Figure S3. As in Fig. 6 but for the AMIP-type simulations instead of the CMIP5 simulations. Black number corresponds to the number in the list of models at the bottom. Gray number denotes the rank in Fig. 6 only for the model of which the name coincides with that in Table S1. Figure S4. As in Fig. 7 but for JJA mean precipitation (% K–1). White in (a–d) and hatching in (e–j) indicate the grid cells where the models simulate no precipitation in the present-day climate. Figure S5. As in Fig. 7 but for DJF mean precipitation (% K–1). White in (a–d) and hatching in (e–j) indicate the grid cells where the models simulate no precipitation in the present-day climate. Figure S6. As in Fig. 8 but for (a) JJA mean precipitation and (b) DJF mean precipitation. Hatching indicates the grid cells where the models simulate no precipitation in the present-day climate. Figure S7. As in Fig. 9 but for (a) JJA mean precipitation and (b) DJF mean precipitation (% K–1). Figure S8. Future change anomaly for each of 12 HF ensemble members from their mean. (a) Future change of geopotential height at 500 hPa and (b) that of sea level pressure. Members on each row are the member with the same SST-change pattern for the future climate simulation. Members on each column are the member with the same cumulus convection scheme. The anomaly is normalized by the annual variation of individual variables in the present-day climate. Crosshatching (Hatching) indicates the 99% (90%) confidence level. Figure S9. Standard deviation in future changes of sea level pressure using three clusters of the CMIP5 AOGCMs and all of them, which were created to obtain future change patterns of sea surface temperature and sea ice for the MRI-AGCM3.2 simulations by Mizuta et al. (2014). The deviation is normalized by the annual variation in the present-day climate averaged over the CMIP5 models in each cluster. (see text for details).
Additional file 2 of Can we achieve better recruitment by providing better information? Meta-analysis of ‘studies within a trial’ (SWATs) of optimised participant information sheets
Creators: name: Madurasinghe, Vichithranie W.
name: Bower, Peter
name: Eldridge, Sandra
name: Collier, David
name: Graffy, Jonathan
name: Treweek, Shaun
name: Knapp, Peter
name: Parker, Adwoa
name: Rick, Jo
name: Salisbury, Chris
name: Man, Mei See
name: Torgerson, David
name: Sheridan, Rebecca
name: Sullivan, Frank
name: Cockayne, Sarah
name: Dack, Charlotte
Publisher: name: figshare
Year: 2021
Subjects: subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: FOS: Biological sciences
subject: Science Policy

description: Additional file 2: Table S2. Criteria for deciding whether user tested participant information needs another SWAT evaluation. Figure S1. Cumulative meta-analysis
Knot Invariants from Four-Dimensional Gauge Theory
Creators: name: Gaiotto, Davide
name: Witten, Edward
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Differential Geometry (math.DG)
subject: Geometric Topology (math.GT)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: It has been argued based on electric-magnetic duality and other ingredients that the Jones polynomial of a knot in three dimensions can be computed by counting the solutions of certain gauge theory equations in four dimensions. Here, we attempt to verify this directly by analyzing the equations and counting their solutions, without reference to any quantum dualities. After suitably perturbing the equations to make their behavior more generic, we are able to get a fairly clear understanding of how the Jones polynomial emerges. The main ingredient in the argument is a link between the four-dimensional gauge theory equations in question and conformal blocks for degenerate representations of the Virasoro algebra in two dimensions. Along the way we get a better understanding of how our subject is related to a variety of new and old topics in mathematical physics, ranging from the Bethe ansatz for the Gaudin spin chain to the $M$-theory description of BPS monopoles and the relation between Chern-Simons gauge theory and Virasoro conformal blocks.
description: 117 pages
Gas in portal system in a patient with perforation of the small bowel
Creators: name: Rafailidis, Vasileios
Publisher: name: EURORAD
Year: 2013
Subjects: subject: Abdomen
subject: Liver
subject: Thorax
subject: CT
subject: Plain radiographic studies
subject: Ultrasound
subject: Diagnostic procedure
subject: Acute

description: Clinical History Image Findings Discussion Find Diagnosis Differential Diagnosis
description: female, 81 years
description: Clinical History: An 81-year-old female patient presented with abdominal pain. Physical examination showed flatulence and diffuse abdominal sensitivity while auscultation revealed no bowel sounds on the right abdominal area. Laboratory tests showed increased CRP, amylase a... Final Diagnosis: Surgery revealed perforation of the jejunum due to lymphoma (histology).
Additional file 1 of Pain trajectories and possible predictors of a favourable course of low back pain in patients consulting musculoskeletal physicians in The Netherlands
Creators: name: Schuller, Wouter
name: Ostelo, Raymond W.
name: Rohrich, Daphne C.
name: Heymans, Martijn W.
name: de Vet, Henrica C. W.
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Neuroscience
subject: Biotechnology
subject: Ecology
subject: FOS: Biological sciences
subject: 69999 Biological Sciences not elsewhere classified
subject: Cancer

description: Additional file 1: Table S1. Handling of predictor variables, Table S2. Fit characteristics of pain trajectories.
Paravalvular mitral leak diagnosed by coronary artery Computed Tomography
Creators: name: Fusco, Armando
Publisher: name: EURORAD
Year: 2013
Subjects: subject: Cardiac
subject: CT-Angiography
subject: Complications
subject: Prostheses

description: Clinical History Image Findings Discussion Find Diagnosis Differential Diagnosis
description: female, 65 years
description: Clinical History: A 65-year-old obese woman (BMI= 34.71) with history of mechanical mitral valve transplantation presented a pansystolic cardiac murmur. She also reported the presence of recurrent retro-sternal pain and hyperlipidaemia. Final Diagnosis: Mitral para-valvular leak
Correlations of Quasar Optical Spectra with Radio Morphology
Creators: name: Kimball, Amy E.
name: Ivezić, Željko
name: Wiita, Paul J.
name: Schneider, Donald P.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: (Abridged) With the largest homogeneous quasar sample with optical spectra and robust radio morphology classifications assembled to date, we investigate quasar radio and optical properties with unprecedented statistical power. The data consist of 4714 radio quasars from FIRST with S_{20}>2mJy and SDSS spectra. Radio morphology classes include core-only (core), core-lobe (lobe), core-jet (jet), lobe-core-lobe (triple), and double-lobe. We examine the optical colors of radio-morphology subsamples and find that radio quasars with core emission unresolved by FIRST (on 5" scale) have a redder color distribution than radio-quiet quasars (S_{20}<1mJy); other classes of radio quasars have optical color distributions similar to the radio-quiet quasars. This analysis also suggests that optical colors of z<2.7 SDSS quasars are not strongly (<0.1mag) biased blue. We show that the radio core-to-lobe flux density ratio (R) and the radio-to-optical (i-band) ratio of the quasar core (RI) are correlated, suggesting that both parameters are indicative of line-of-sight orientation. We investigate spectral line equivalent widths as a function of R and RI, including the [OIII] narrow line doublet and the CIV λ1549 and MgII λ2799 broad lines. We find that the rest equivalent widths (EWs) of the broad lines correlate positively with RI at the 4-8σ level. But we find no strong dependence of EW on R, in contrast to previous results. One interpretation is that EWs increase as the line-of-sight angle to the radio-jet axis decreases. These results are in stark contrast to commonly accepted orientation-based theories, which suggest that continuum emission should increase as the angle to the radio-jet axis decreases, resulting in smaller EW of emission lines (assumed isotropic). Finally, we find that the Baldwin effect in our sample does not depend on quasar radio morphology.
description: 22 pages, 16 figures, 9 tables. Accepted for publication in the Astronomical Journal
PEComa of the liver
Creators: name: Davydenko, Pavel
Publisher: name: EURORAD
Year: 2013
Subjects: subject: Abdomen
subject: CT
subject: MR
subject: Computer Applications-Detection, diagnosis
subject: Diagnostic procedure
subject: Neoplasia

description: Clinical History Image Findings Discussion Find Diagnosis Differential Diagnosis
description: female, 52 years
description: Clinical History: A 52-year-old woman was admitted to our clinic with complaints of right upper quadrant pain, general weakness and dizziness that have been bothering her for a year. Physical examination showed no abnormalities. Haematological and chemical studies gave nor... Final Diagnosis: Perivascular epithelioid cell tumours (PEComa) of the liver
Compliance of POLYAS with the Common Criteria Protection Profile
Creators: name: Menke, Niels
name: Reinhard, Kai
Publisher: name: arXiv
Year: 2010
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: In 2008, the German Federal Office for Information Security issued the common criteria protection profile for Online Voting Products (PP-0037). Accord- ingly, we evaluated the Polyas electronic voting system, which is used for legally binding elections in several international organizations (German Gesellschaft for Informatik, GI, among others), for compliance with the common criteria protection profile and worked toward fulfilling the given requirements. In this article we pre- sent the findings of the process of creating a compliant security target, necessary restrictions and assumptions to the system design as well as the workings of the committee, and architectural and procedural changes made necessary.
description: 10 pages
Extra medullary haematopoiesis (ECR 2013 Case of the Day)
Creators: name: Revel, Marie-Pierre
Publisher: name: EURORAD
Year: 2013
Subjects: subject: Mediastinum
subject: Musculoskeletal bone
subject: Thorax
subject: CT
subject: CT-Angiography
subject: Conventional radiography
subject: Diagnostic procedure
subject: Haematologic diseases

description: Clinical History Image Findings Discussion Find Diagnosis Differential Diagnosis
description: female, 45 years
description: Clinical History: A 45-year-old woman of Italian descent presented with dyspnoea. The physical examination revealed 26 respirations per minute, a heart rate of 103 beats per minute, clear lungs. Laboratory analyses showed a haemoglobin level of 8g per decilitre. She had ch... Final Diagnosis: Extramedullary haematopoiesis (EMH), here due to thalassaemia major
Excitation of spiral density waves by convection in accretion discs
Creators: name: Mamatsashvili, G. R.
name: Rice, W. K. M.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Motivated by the recent results of \citet{Lesur_Ogilvie10} on the transport properties of incompressible convection in protoplanetary discs, in this paper we study the role of compressibility and hence of another basic mode -- spiral density waves -- in convective instability in discs. We analyse the linear dynamics of non-axisymmetric convection and spiral density waves in a Keplerian disc with superadiabatic vertical stratification using the local shearing box approach. It is demonstrated that the shear associated with Keplerian differential rotation introduces a novel phenomenon, it causes these two perturbation modes to become coupled: during evolution the convective mode generates (trailing) spiral density waves and can therefore be regarded as a new source of spiral density waves in discs. The wave generation process studied here owes its existence solely to shear of the disc's differential rotation, and is a special manifestation of a more general linear mode coupling phenomena universally taking place in flows with an inhomogeneous velocity profile. We quantify the efficiency of spiral density wave generation by convection as a function of azimuthal and vertical wavenumbers of these modes and find that it is maximal and most powerful when both these length-scales are comparable to the disc scale height. We also show that unlike the convective mode, which tends to transport angular momentum inwards in the linear regime, the spiral density waves transport angular momentum outwards. Based on these findings, we suggest that in the non-linear regime spiral density waves generated by convection may play a role in enhancing the transport of angular momentum due the convective mode alone, which is actually being changed to outward by non-linearity, as indicated by above-mentioned recent developments.
description: 17 pages, 8 figures, accepted for publication in MNRAS
Additional file 1 of High mean arterial pressure target to improve sepsis-associated acute kidney injury in patients with prior hypertension: a feasibility study
Creators: name: Dewitte, Antoine
name: Labat, Aurore
name: Duvignaud, Pierre-Antoine
name: Bouche, Gauthier
name: Joannes-Boyau, Olivier
name: Ripoche, Jean
name: Hilbert, Gilles
name: Gruson, Didier
name: Rubin, Sébastien
name: Ouattara, Alexandre
name: Boyer, Alexandre
name: Combe, Christian
Publisher: name: figshare
Year: 2021
Subjects: subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: Ecology
subject: Marine Biology
subject: Science Policy
subject: Hematology

description: Additional file 1. Table S1. Blood and urine parameters according to the order of administration of the pressure regimen (n = 26). Table S2. Mean individual difference in blood and urine parameters according to KDIGO stage (KDIGO 1 patients (n = 9) and KDIGO 2-3 patients (n = 17)). Figure S1. Individual profile of primary and secondary endpoints. Box plot (median values, inter-quartile range) and individual variations of primary and secondary endpoints from inclusion to low MAP target period and from low to high MAP target period (n = 26). P-values for the within-subject comparison of MAP using a multivariate repeated-measures analysis of variance (MANOVA).
Ventriculus terminalis
Creators: name: Maguire, John
Publisher: name: EURORAD
Year: 2013
Subjects: subject: Neuroradiology spine
subject: MR
subject: Diagnostic procedure
subject: Congenital

description: Clinical History Image Findings Discussion Find Diagnosis Differential Diagnosis
description: male, 54 years
description: Clinical History: A 54-year-old gentleman with a long-standing history of low-back pain presented to the Orthopaedic out-patient clinic with worsening symptoms and new left leg pain within the distribution of the L5 nerve root. Nerve root compression was suspected and an M... Final Diagnosis: Ventriculus Terminalis, in association with mild cord tethering
Giant anharmonicity suppresses superconductivity in AlH$_3$ under pressure
Creators: name: Rousseau, Bruno
name: Bergara, Aitor
Publisher: name: arXiv
Year: 2010
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: Other Condensed Matter (cond-mat.other)
subject: FOS: Physical sciences

description: The anharmonic self energy of two zone boundary phonons were computed to lowest order for AlH$_3$ in the $Pm\bar 3n$ structure at 110 GPa. The wavevector and branch index corresponding to these modes are situated in a region of phase space providing most of the electron-phonon coupling. The self energies are found to be very large and the anharmonic contribution to the linewidth of one of the modes studied could be distinguished from the electron-phonon linewidth. It is found that anharmonicity suppresses the electron-phonon coupling parameter $λ$, providing a possible explanation for the disagreement between experiment and previous theoretical studies of superconductivity in this system.
description: 10 pages, 4 figures
Temps de discussion 3
Creators: name: Collectif IGP
Publisher: name: Collectif Inventer le Grand Paris
Year: 2018

description: Corinne Jaquand Est-ce que cette hypothèse n’est pas plutôt le fait d’une certaine époque de l’urbanisme où le paysage était considéré comme du remplissage ?  Denis Delbaere Mais ça n’a pas changé. Effectivement aujourd’hui le paysage est pris un peu plus au sérieux dans les discours mais dans les faits, dès qu’on sort des projets un peu prestigieux, l’ordinaire n’a pas changé dans le peu de considération apporté au paysage.  Loïc Vadelorge Moi ce que je trouve très stimulant dans cette démarche c’est que, d’une certaine manière, ça réhabilite aussi le plan. C’est aussi intéressant de revenir au plan...
PML-IRIS (ECR 2013 Case of the Day)
Creators: name: APARICI, Fernando
Publisher: name: EURORAD
Year: 2013
Subjects: subject: Neuroradiology brain
subject: CT
subject: MR
subject: Diagnostic procedure
subject: AIDS

description: Clinical History Image Findings Discussion Find Diagnosis Differential Diagnosis
description: female, 38 years
description: Clinical History: A 38-year-old woman in C3 stage of HIV infection, presenting symptoms of right hemiparesis and hemihypoesthesia. Patient abandoned antiretroviral therapy (ART) voluntarily, 2 years before. Final Diagnosis: PML-IRIS (Progressive multifocal leukoencephalopathy-Immune reconstitution inflammatory syndrome)
Intraosseous ganglion cyst (ECR 2013 Case of the Day)
Creators: name: Tagliafico, Alberto
Publisher: name: EURORAD
Year: 2013
Subjects: subject: Ear / Nose / Throat
subject: Musculoskeletal joint
subject: Catheter arteriography
subject: MR
subject: Plain radiographic studies
subject: Ultrasound
subject: Abscess delineation
subject: Diagnostic procedure
subject: Acute

description: Clinical History Image Findings Discussion Find Diagnosis Differential Diagnosis
description: female, 34 years
description: Clinical History: Indistinct pain lasting for four months in the lower limb at the level of the right knee. Final Diagnosis: Intraosseous ganglion cyst
Pointer States via Engineered Dissipation
Creators: name: Khodjasteh, Kaveh
name: Dobrovitski, Viatcheslav V.
name: Viola, Lorenza
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Pointer states are long-lasting high-fidelity states in open quantum systems. We show how any pure state in a non-Markovian open quantum system can be made to behave as a pointer state by suitably engineering the coupling to the environment via open-loop periodic control. Engineered pointer states are constructed as approximate fixed points of the controlled open-system dynamics, in such a way that they are guaranteed to survive over a long time with a fidelity determined by the relative precision with which the dynamics is engineered. We provide quantitative minimum-fidelity bounds by identifying symmetry and ergodicity conditions that the decoherence-inducing perturbation must obey in the presence of control, and develop explicit pulse sequences for engineering any desired set of orthogonal states as pointer states. These general control protocols are validated through exact numerical simulations as well as semi-classical approximations in realistic single and two qubit dissipative systems. We also examine the role of control imperfections, and show that while pointer-state engineering protocols are highly robust in the presence of systematic pulse errors, the latter can also lead to unintended pointer-state generation in dynamical decoupling implementations, explaining the initial-state selectivity observed in recent experiments.
description: 22 pages, 12 figures
Base doping profile control for SiGe PNP HBTs
Creators: name: Yiheng, Lin
Publisher: name: University of British Columbia
Year: 2016

description: The aim of this thesis is to investigate three aspects related to phosphorus diffusion for doping profile control in PNP SiGe HBTs: We systematically and quantitatively investigated the impact of carbon and Ge on P diffusion in strained SiGe:C up to 18% Ge and 0.32% C through experiments, which shows that the incorporation of carbon to retard P diffusion is not as effective in SiGe as it is in Si. Models were established to calculate the effective P diffusivities as a function of carbon concentration. These models can also be applied to boron, phosphorus, arsenic and antimony diffusion in Si with the presence of carbon. These results indicate that the microscopic mechanism of P diffusion in Si₀.₈₂Ge₀.₁₈ has a small but non-negligible vacancy-mediated term. An experimental study of thermal nitridation effects on phosphorus diffusion in strained Si1-xGex and strained Si1-xGex:Cy was performed. P diffusivities under thermal nitridation (vacancy injection) and the effective inert condition were compared. The result shows that thermal nitridation can retard P diffusion in SiGe with up to 18% Ge content, but the effectiveness of this retardation decreases with increasing Ge and C content. The Ge dependence can be explained by the increasing contribution from vacancy-assisted mechanism for P diffusion in strained SiGe with the increasing Ge content. P tends to segregate out of SiGe region, which happens simultaneously with diffusion. A coupled diffusion and segregation model is needed to predict the P profile evolution at thin SiGe layers. The model was re-derived theoretically, where the contributions from diffusion and segregation to dopant flux are explicitly shown. The model is generic to coupled diffusion and segregation in inhomogeneous alloys, and provides a new approach in segregation coefficient extraction. This model is especially helpful for heterostructures with lattice mismatch strains. Experiments of coupled P diffusion and segregation were performed with graded SiGe layers for Ge molar fractions up to 0.18, which are relevant to PNP SiGe HBTs. The model was shown to describe both diffusion and segregation behavior well.
Projection operator approach to spin diffusion in the anisotropic Heisenberg chain at high temperatures
Creators: name: Steinigeweg, Robin
name: Schnalle, Roman
Publisher: name: arXiv
Year: 2010
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We investigate spin transport in the anisotropic Heisenberg chain in the limit of high temperatures (β \to 0). We particularly focus on diffusion and the quantitative evaluation of diffusion constants from current autocorrelations as a function of the anisotropy parameter Δ and the spin quantum number s. Our approach is essentially based on an application of the time-convolutionless (TCL) projection operator technique. Within this perturbative approach the projection onto the current yields the decay of autocorrelations to lowest order of Δ. The resulting diffusion constants scale as 1/Δ^2 in the Markovian regime Δ<<1 (s=1/2) and as 1/Δ in the highly non-Markovian regime above Δ \sim 1 (arbitrary s). In the latter regime the dependence on s appears approximately as an overall scaling factor \sqrt{s(s+1)} only. These results are in remarkably good agreement with diffusion constants for Δ>1 which are obtained directly from the exact diagonalization of autocorrelations or have been obtained from non-equilibrium bath scenarios.
description: 4 pages, 3 figures
Additional file 2 of Asymptomatic malaria and hepatitis B do not influence cytokine responses of persons involved in chronic sedentary activities
Creators: name: Nsoh Godwin Anabire
name: Aryee, Paul Armah
name: Zulka Ziblim
name: Suurbaar, Jonathan
name: Ansah, Felix
name: Helegbe, Gideon Kofi
Publisher: name: figshare
Year: 2020
Subjects: subject: 29999 Physical Sciences not elsewhere classified
subject: FOS: Physical sciences
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: 110309 Infectious Diseases

description: Additional file 2. Behavioral/life style determinants in study participants (n = 400).
[Letter from Wee Tan Louie to Margeurite T. Louie]
[Wee Tan Louie 致 Margeurite T. Louie 的信]
Creators: name: Louie, Wee Tan
Publisher: name: The University of British Columbia
Year: 2011

description: Letter addressed to the writer's sister in Kamploops, Canada, in 1918 about his life in barracks in Campbelton, New Brunswick.
On the non-existence of an R-labeling
Creators: name: Ehrenborg, Richard
name: Readdy, Margaret
Publisher: name: arXiv
Year: 2010
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: We present a family of Eulerian posets which does not have any R-labeling. The result uses a structure theorem for R-labelings of the butterfly poset.
description: 6 pages, 1 figure. To appear in the journal Order
Complete group classification of a class of nonlinear wave equations
Creators: name: Bihlo, Alexander
name: Cardoso-Bihlo, Elsa Dos Santos
name: Popovych, Roman O.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mathematical Physics (math-ph)
subject: Analysis of PDEs (math.AP)
subject: FOS: Physical sciences
subject: FOS: Mathematics

description: Preliminary group classification became prominent as an approach to symmetry analysis of differential equations due to the paper by Ibragimov, Torrisi and Valenti [J. Math. Phys. 32, 2988-2995] in which partial preliminary group classification of a class of nonlinear wave equations was carried out via the classification of one-dimensional Lie symmetry extensions related to a fixed finite-dimensional subalgebra of the infinite-dimensional equivalence algebra of the class under consideration. In the present paper we implement, up to both usual and general point equivalence, the complete group classification of the same class using the algebraic method of group classification. This includes the complete preliminary group classification of the class and finding Lie symmetry extensions which are not associated with subalgebras of the equivalence algebra. The complete preliminary group classification is based on listing all inequivalent subalgebras of the whole infinite-dimensional equivalence algebra whose projections are qualified as maximal extensions of the kernel algebra. The set of admissible point transformations of the class is exhaustively described in terms of the partition of the class into normalized subclasses. A version of the algebraic method for finding the complete equivalence groups of a general class of differential equations is proposed.
description: 39 pages
Effective Strategies for Identifying Model Parameters for Open Quantum Systems
Creators: name: Gong, Er-ling
name: Zhou, Weiwei
name: Schirmer, S. G.
name: Sun, Zhi-Qiang
name: Zhang, Ming
Publisher: name: arXiv
Year: 2010
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The problem of identifiability of model parameters for open quantum systems is considered by investigating two-level dephasing systems. We discuss under which conditions full information about the Hamiltonian and dephasing parameters can be obtained. Using simulated experiments several different strategies for extracting model parameters from limited and noisy data are compared.
FORM facts
Creators: name: Vermaseren, J. A. M.
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Symbolic Computation (cs.SC)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Some of the new features of the symbolic manipulation system FORM are discussed. Then some recent results running its multithreaded version TFORM are shown. Finally the plans for the future are presented.
description: 6 pages. Talk presented at the Loops and Legs 2010 workshop
Additional file 1 of A single chromosome strain of S. cerevisiae exhibits diminished ethanol metabolism and tolerance
Creators: name: Doughty, Tyler W.
name: Yu, Rosemary
name: Chao, Lucy Fang-I
name: Qin, Zhongjun
name: Siewers, Verena
name: Nielsen, Jens
Publisher: name: figshare
Year: 2021
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 1: Fig. S1. Long-term shake flask growth of SY14 results in diminished biomass accumulation. BY4742 and SY14 were grown in YPD media in shake flasks for 10 days. Measurements were taken periodically and are shown in a. The difference in biomass on day 10 was 24% (b). Fig. S2. SY14 does not exhibit increased sensitivity to hydrogen peroxide. a Growth curves were calculated using a 48-well growth assay measuring OD600 every 10 min for wildtype (BY4742) and single chromosome (SY14) strains. The maximum doubling time during glucose phase (b) and lag phase (c) are shown. Fig. S3. Total protein and rRNA abundance and processing are similar between wildtype and SY14 strains. a Protein content was measured via Lowry assay. b To assess potential changes in Ribosomal RNA expression or processing, rRNA was measured via qPCR for mature rRNA regions (18S and 25S), as well as a region that is removed during maturation (ITS2). Fig. S4. Glucose RNAseq suggests RNR3 and HUG1 are differentially expressed in chromosomal fusion strains grown on glucose. a Glucose-phase differential expression data was generated using biomass from fermentations shown in Fig. 1. b The data in this report (red) was compared to RNAseq from previous reports that studied either the single chromosome strain (purple) or the two chromosome strain (green). Shared differentially expressed genes (log2FC > 1abs FDR 0.1 Counts Per Million) in at least one sample in our RNAseq datasets are shown for the left telomere (b) and the right telomere (c). Fig. S8. Genes repressed by sirtuins overlap with genes induced during ethanol growth a Gene expression during growth on glucose versus ethanol from this report is shown for the 153 genes that were upregulated in a sir2Δhst1Δ strain in Humphrey et al. 2020 [1]. 18 genes from this dataset were not detected in our RNAseq data and were omitted from the analysis. b Gene expression during growth on glucose versus ethanol is shown for the 46 genes that were upregulated in a hst3Δhst4Δ strain in Feldman et al. 2019 [2]. For each figure, green indicates a significant upregulation during the ethanol phase, red indicates a significant downregulation, and black indicates no significant change.
A spontaneous melanoma mouse model applicable for a longitudinal chemotherapy and immunotherapy study
Creators: name: Eddy, Kevinn
Publisher: name: No Publisher Supplied
Year: 2023

description: Mouse models that reflect human disorders provide invaluable tools towards the translation of basic science discoveries to clinical therapies. However, many of these in vivo therapeutic studies are short-term and do not accurately mimic patient conditions. In this dissertation, we utilized a fully immuno-competent, transgenic mouse model, TGS, in which the spontaneous development of metastatic melanoma is driven by the ectopic expression of a normal neuronal receptor, metabotropic glutamate receptor 1 (mGluR1), as a model to assess longitudinal treatment response (up to 8-15 months) with an inhibitor of glutamatergic signaling, troriluzole, a prodrug of riluzole, plus an antibody against programmed cell death protein-1 (PD-1), an immune-checkpoint inhibitor. A sex-dichotomy in treatment response was observed where male mice benefited from a lower dose of troriluzole and when the dose of troriluzole was increased it rescued response rates in some female mice. We confirmed that troriluzole was successfully converted to its active metabolite, riluzole at 6-, 12-, and 18-weeks in systemic circulation. Our study suggests an emergence of resistant cell populations as a consequence of the long-term administration of troriluzole and/or anti-PD-1 that might be correlated with a loss of immune cell infiltrates, T-cell cytotoxicity, and difference in tumor-markers associated with the mechanism of action of riluzole/troriluzole and anti-PD-1. This work suggests that the TGS model is a responsive and tractable system for evaluating therapeutic regimens for melanoma in an immuno-competent setting. The main goal and conclusion from studies performed for this dissertation is that results from pre-clinical in vivo graft studies used in drug development which is required to obtain investigational drug approval to initiate a clinical trial need more rigorous scrutinizing since many of these in vivo studies are short-term and do not accurately reflect patient circumstances. Short-term in vivo graft studies are preclinical gold-standards to validate molecular targets identified in "OMIC" screens and in vitro studies but not necessarily adequate for accurately evaluating the long-term therapeutic outcomes in patients. The next best approach is to develop appropriate models to accurately predict therapeutic response in patients and use these models to rationally design treatment options for patients who develop resistance.
Revisiting Kawasaki dynamics in one dimension
Creators: name: Grynberg, M. D.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Critical exponents of the Kawasaki dynamics in the Ising chain are re-examined numerically through the spectrum gap of evolution operators constructed both in spin and domain wall representations. At low temperature regimes the latter provides a rapid finite-size convergence to these exponents, which tend to $z \simeq 3.11$ for instant quenches under ferromagnetic couplings, while approaching to $z \simeq 2$ in the antiferro case. The spin representation complements the evaluation of dynamic exponents at higher temperature scales, where the kinetics still remains slow.
description: 11 pages, 8 figures
Establishing the stable isotope and geochemical footprints associated with carbonate-hosted Zn-Pb deposits of the Kootenay Arc
Creators: name: Cook, Natalie Louise
Publisher: name: University of British Columbia
Year: 2016

description: Carbonate-hosted Zn-Pb deposits of the Kootenay Arc in southeastern British Columbia and northeastern Washington typically have narrow and poorly developed alteration footprints, and so generate significantly smaller visible and geochemical haloes when compared to many other mineral deposit systems. However, these carbonate-hosted deposits can have invisible alteration footprints that are much broader when detected with analyses of light stable isotopes. The intensity of this isotopic alteration increases from peripheral regions into the centre of mineralization with greater shifts towards lighter, or more depleted, isotopic values as a result of more fluid:rock interaction. These depleted stable isotope values can therefore provide information about fluid flow during mineralization and have potential value in the search for sulphide mineralization. Studies of C and O isotopes from the host rocks of four Zn-Pb mines within the Kootenay Arc (H.B., Jersey, Remac and Pend Oreille) in addition to geochemical analyses have revealed at least two separate isotopic alteration signatures. These two different isotopic alteration signatures are inferred to represent two different hydrothermal fluids; the Remac Mine exhibits a much lower temperature isotopic signature when compared to the H.B., Jersey and Pend Oreille mines. Despite the difference in isotopic signature, all four mines are thought to represent Mississippi Valley-type mineralization. The most depleted isotopic values have been interpreted to reflect the highest temperature and most permeable systems. At the mine-scale, isotopic depletion highlights permeable rock-types and proximity to fault zones rather than proximity to Zn-Pb mineralization. At this scale it is therefore necessary to utilize additional geological information, such as geochemistry, to delineate rock-types that could be potential hosts of Zn-Pb mineralization. These two distinct isotopic signatures, in addition to geochemistry and other geological information, could therefore be utilized to vector towards, or re-evaluate, similar Mississippi Valley-type Zn-Pb mineralization within this region.
Asymmetric Wave Propagation in Nonlinear Systems
Creators: name: Lepri, Stefano
name: Casati, Giulio
Publisher: name: arXiv
Year: 2011
Subjects: subject: Pattern Formation and Solitons (nlin.PS)
subject: FOS: Physical sciences

description: A mechanism for asymmetric (nonreciprocal) wave transmission is presented. As a reference system, we consider a layered nonlinear, non mirror-symmetric model described by the one-dimensional Discrete Nonlinear Schreodinger equation with spatially varying coefficients embedded in an otherwise linear lattice. We construct a class of exact extended solutions such that waves with the same frequency and incident amplitude impinging from left and right directions have very different transmission coefficients. This effect arises already for the simplest case of two nonlinear layers and is associated with the shift of nonlinear resonances. Increasing the number of layers considerably increases the complexity of the family of solutions. Finally, numerical simulations of asymmetric wavepacket transmission are presented which beautifully display the rectifying effect.