cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Stellar rotation in the Hyades and Praesepe: gyrochronology and braking timescale
Creators: name: Delorme, P.
name: Cameron, A. Collier
name: Hebb, L.
name: Rostron, J.
name: Lister, T. A.
name: Norton, A. J.
name: Pollacco, D.
name: West, R. G.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We present the results of photometric surveys for stellar rotation in the Hyades and in Praesepe, using data obtained as part of the SuperWASP exoplanetary transit-search programme.We determined accurate rotation periods for more than 120 sources whose cluster membership was confirmed by common proper motion and colour-magnitude fits to the clusters' isochrones. This allowed us to determine the effect of magnetic braking on a wide range of spectral types for expected ages of ~600Myr for the Hyades and Praesepe. Both clusters show a tight and nearly linear relation between J - Ks colour and rotation period in the F,G and K spectral range. This confirms that loss of angular momentum was significant enough that stars with strongly different initial rotation rates have converged to the same rotation period for a given mass, by the age of Hyades and Praesepe. In the case of the Hyades our colour-period sequence extends well into the M dwarf regime and shows a steep increase in the scatter of the colour- period relation, with identification of numerous rapid rotators from 0.5SM down to the lowest masses probed by our survey (0.25SM). This provides crucial constraints on the rotational braking timescales and further clears the way to use gyrochronology as an accurate age measurement tool for main-sequence stars.
description: MNRAS accepted
title: Quantitative T2* mapping of intervertebral lumbar disc in patients with lower back pain- preliminary investigation in routine clinical settings
Creators: name: Kumar, Dileep
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Artificial Intelligence
subject: MR
subject: Imaging sequences
subject: Technical aspects
subject: Education and training
subject: Tissue characterisation

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: The human lumbar spine is comprised of multiple tissue components that serve to offer structural stability as well as optimal nutrition. Traditional magnetic resonance (MR) imaging techniques have been beneficial in assessing intervertebral disc...
Born's rule from measurements of classical signals by threshold detectors which are properly calibrated
Creators: name: Khrennikov, Andrei
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Physics (quant-ph)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: The very old problem of the statistical content of quantum mechanics (QM) is studied in a novel framework. The Born's rule (one of the basic postulates of QM) is derived from theory of classical random signals. We present a measurement scheme which transforms continuous signals into discrete clicks and reproduces the Born's rule. This is the sheme of threshold type detection. Calibration of detectors plays a crucial role.
description: The problem of double clicks is resolved; hence, one can proceed in purely wave framework, i.e., the wave-partcile duality has been resolved in favor of the wave picture of prequantum reality
title: ÐÑÐµÐ½ÐºÐ° Ð¸Ð½Ð²ÐµÑÑÐ¸ÑÐ¸Ð¾Ð½Ð½Ð¾Ð¹ Ð¿ÑÐ¸Ð²Ð»ÐµÐºÐ°ÑÐµÐ»ÑÐ½Ð¾ÑÑÐ¸ Ð¿ÑÐµÐ´Ð¿ÑÐ¸ÑÑÐ¸Ñ
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°
titleType: Subtitle
title: Evaluation of investment entertainment of the enterprise
Creators: name: Ð ÑÐ±Ð°Ðº-Ð¤ÑÐ°Ð½ÐºÐ¾, ÐÐ»Ð°Ð´Ð¸Ð¼Ð¸Ñ
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2018
Subjects: Ð¸Ð½Ð²ÐµÑÑÐ¸ÑÐ¸Ð¸
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description: ÐÐ±ÑÐµÐºÑÐ¾Ð¼ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ ÑÐ²Ð»ÑÐµÑÑÑ ÑÐºÐ¾Ð½Ð¾Ð¼Ð¸ÑÐµÑÐºÐ°Ñ ÑÐ¸ÑÑÐµÐ¼Ð°.
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description: The object of research is the economic system.
The purpose of the work is to assess the investment attractiveness of the enterprise and describe the methods of its enhancement.
In the process of work, the results of economic studies, expert opinions, normative documents were used.
The paper analyzed and structured the main theoretical aspects of investment attractiveness, described new methods of increasing investment attractiveness, investigated the possibility and results of their practical application.
Insufficient knowledge of the topic analyzed in the work reflects the relevance of the study.
title: Is it always cancer? Multiple masses in the peritoneal cavity: A diagnostic approach
Creators: name: Lee, Kentson
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Abdomen
subject: Pelvis
subject: Peritoneum
subject: CT
subject: MR
subject: Education
subject: Metastases
subject: Neoplasia

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: Illustrate an approach to the diagnosis of multiple peritoneal lesions Highlight the imaging features and differential diagnosis for multiple peritoneal...
Moduli and BPS configurations of the BLG theory
Creators: name: Chakrabortty, Shankhadeep
name: Chowdhury, Sudipto Paul
name: Köppe, Thomas
name: Ray, Koushik
Publisher: name: arXiv
Year: 2010
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the moduli space of scalars in the BLG theory with and without a constant background four-form field. The classical vacuum moduli space is sixteen-dimensional in the absence of the four-form field. In its presence, however, the moduli space of BPS configurations may be reduced in dimension. We exemplify this with a BPS configuration having $SO(1,2)$ world-volume symmetry and $SO(4) \times SO(4)$ R-symmetry in the presence of a four-form field, by constructing an explicit solution.
description: 11 pages, LaTeX. References added. Zero mode of the gauge field is shown to furnish the 16th dimension of the moduli space. Some discussions improved. Version to appear in Physics Letters B
Facilitating user interaction with data
Creators: name: Zolaktaf Zadeh, Zeinab
Publisher: name: University of British Columbia
Year: 2019

description: In many domains, users interact with data stored in large, and often structured, data sources. This thesis addresses three phases of user interaction: (1) data exploration, (2) query composition, (3) and query answer analysis. It provides methods to assist in each of these phases, though, of course, no single thesis could be broad enough to cover all possible user interaction in these phases. The first part of the thesis focuses on improving data exploration with recommender systems. Standard recommendation models are biased toward popular items in their suggestions. Our approach is to analyze past interaction logs to estimate user preference for exploration and novelty. We present a generic framework that increases the novelty of recommendations based on each user's novelty preference. The next part of the thesis examines ways of facilitating query composition. We study models that analyze past query logs to model and estimate query properties, such as answer size or error type. By predicting these properties prior to query execution, we can help the user tune and optimize their query. Empirical results show that the data-driven machine learning models can accurately perform several of the prediction tasks. The final part of this thesis studies methods for improving the analysis of large or conflicting query answers. This problem is common in integration contexts where data is segmented across several sources with overlapping and conflicting data values. Depending on which combination of sources and values are used, a simple query can have an overwhelming number of correct and conflicting answers. The approach presented is based on efficiently estimating a query answer distribution. Further, it offers a suite of methods for extracting statistics that convey meaningful information about the answer set. Overall, the solutions developed in this thesis aim to increase the efficiency and decision quality of users. Empirical results on real-world datasets show that the proposed problems and solutions are important steps in the general direction of making information easily accessible to users.
title: Optimal reference tissue selection for 18F-AV45 Total-Body amyloid PET
Creators: name: Yang, Xuefei
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Head and neck
subject: Molecular imaging
subject: Nuclear medicine
subject: PET
subject: PET-CT
subject: Molecular imaging
subject: Statistics
subject: FOS: Mathematics
subject: Dementia
subject: Developmental disease
subject: Image verification

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: Amyloid-β (Aβ) peptide plaquesare deposited in the brain in Alzheimer's disease (AD), a neurodegenerative condition that worsens over time and is linked to cognitive deficits. Positron emission tomography (PET/CT) with 18F-florbetapir is linked to...
title: Application of 2D PC-MRI in predicting portal hyperperfusion syndrome after ALPPS
Creators: name: Zhang, Ling
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Liver
subject: Oncology
subject: MR
subject: Complications
subject: Imaging sequences
subject: Cirrhosis
subject: Hyperplasia / Hypertrophy

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: To evaluate the application value of 2D PC-MRI technology in the patients who had portal hyperperfusion syndrome before and after the surgery of ALPPS. This study will use non-invasive 2D PC-MRI to monitor the changes of portal vein blood flow and...
Measurement of electron dynamics in atoms and molecules with intense XUV FEL radiation
Creators: name: Aufleger, Lennart
Publisher: name: Deutsches Elektronen-Synchrotron, DESY, Hamburg
Year: 2016

description: Masterarbeit, Uni Heidelberg, 2016; 69 pp. (2016). = Masterarbeit, Uni Heidelberg, 2016
description: The observation of strong-field dynamics in atoms and molecules on ultra short timescales has been of high interest for a long time. In recent years the investigation of inner-shell electron dynamics became possible when strong ultrashort lasers in the extreme ultra violet (XUV) became reality in the form of free electron lasers (FEL). They allow for example the observation of charge transfer processes in molecules. In this spirit a measurement campaign was performed at FLASH (DESY), to investigate such phenomena at halogenated hydrocarbon molecules. This thesis describes the required further development of a transient absorption beam line and the new design of essential components with regards to experiments with corrosive targets and an FEL light source. An intensity dependent absorption measurement of a doubly excited state in helium was conducted as well. This can be considered an extension of prior work performed recently with near infrared and visible (VIS) strongfield modification of XUV absorption from lab-based HHG light source. The measurement described in this work investigates XUV strong-field modification of XUV absorption with partially coherent FEL light.
title: Understanding the PI-QUAL as a new system for evaluating prostate magnetic resonance imaging quality.
Creators: name: Linos, Zury
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Genital / Reproductive system male
subject: Oncology
subject: MR
subject: Imaging sequences
subject: Cancer

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: To present a pictorial review through a series of selected prostate magnetic resonance studies that reflect the key imaging characteristics for understanding using the PI-QUAL system for the evaluation of the quality of prostate magnetic resonance...
Regional Superparametrization of OpenIFS by 3D LES
Creators: name: van den Oord, Gijs
name: Jansson, Fredrik
name: Chertova, Maria
name: Pelupessy, Inti
name: Crommelin, Daan
name: Siebesma, Pier
Publisher: name: Zenodo
Year: 2020
Subjects: Atmospheric science, weather and climate, high-performance computing

description: We present an implementation of superparametrization (SP) of the ECMWF operational weather model OpenIFS by 3D high-resolution large-eddy simulations. Within a selected region, our software replaces the global model parametrizations of boundary layer turbulence, cloud physics and convection processes with tendencies derived from the vertical profiles of concurrently running instances of the Dutch Atmospheric Large Eddy Simulation (DALES). Vice versa, these DALES models are being forced towards the corresponding local vertical profiles of the OpenIFS. The coupling of the components has been implemented in a Python software layer using the OMUSE multi-scale physics framework. Our setup yields a "cloud-resolving" NWP model that has the potential to improve the representation of clouds and convection processes in OpenIFS. We analyze how the advection of liquid water through the SP region is underestimated and present a modifications in the SP scheme to resolve this. Finally we discuss scaling issues one faces when enlarging the SP region and possible future optimizations and load-balancing strategies to improve the performance of such a global SP.
title: Differences in Abdominal Fat Area and Waist Circumference: Intra-Individual Comparison between Standing and Supine Positions Scanned with Novel Upright CT and Conventional Supine CT
Creators: name: Yamada, Minoru
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Abdomen
subject: CT
subject: CT-Quantitative
subject: Comparative studies
subject: Screening
subject: Image registration

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: Computed tomography (CT) imaging provides powerful diagnostic information and have become part of routine medical care for many patients. Abdominal CT image at the level of the umbilicus allows assessment of waist circumference (WC) and abdominal...
Examining the cosmic acceleration with the latest Union2 supernova data
Creators: name: Li, Zhengxiang
name: Wu, Puxun
name: Yu, Hongwei
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: In this Letter, by reconstructing the $Om$ diagnostic and the deceleration parameter $q$ from the latest Union2 Type Ia supernova sample with and without the systematic error along with the baryon acoustic oscillation (BAO) and the cosmic microwave background (CMB), we study the cosmic expanding history, using the Chevallier-Polarski-Linder (CPL) parametrization. We obtain that Union2+BAO favor an expansion with a decreasing of the acceleration at $z<0.3$. However, once the CMB data is added in the analysis, the cosmic acceleration is found to be still increasing, indicating a tension between low redshift data and high redshift one. In order to reduce this tension significantly, two different methods are considered and thus two different subsamples of Union2 are selected. We then find that two different subsamples+BAO+CMB give completely different results on the cosmic expanding history when the systematic error is ignored, with one suggesting a decreasing cosmic acceleration, the other just the opposite, although both of them alone with BAO support that the cosmic acceleration is slowing down. However, once the systematic error is considered, two different subsamples of Union2 along with BAO and CMB all favor an increasing of the present cosmic acceleration. Therefore a clear-cut answer on whether the cosmic acceleration is slowing down calls for more consistent data and more reliable methods to analyze them.
description: 17 pages, 6 figures; PLB in press
title: Relation between volume of the sphenoid sinuses and protrusion of the adjacent neurovascular structures: A retrospective MDCT imaging study
Creators: name: Panajotovic, Dragana
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Anatomy
subject: Ear / Nose / Throat
subject: Head and neck
subject: CT
subject: Segmentation
subject: Image verification

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: Variable pneumatization and regional anatomy of the sphenoid sinus (SS) have acquired growing importance with the advent of transsphenoidal surgical procedures. The close relation to vital neurovascular structures and the variability of their...
title: Susceptibility-Weighted Imaging (SWI) in Benign and Malignant Tumors of the Musculoskeletal System
Creators: name: Valenzuela, Raul
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Musculoskeletal bone
subject: Musculoskeletal joint
subject: Musculoskeletal soft tissue
subject: MR
subject: MR-Functional imaging
subject: Diagnostic procedure
subject: Imaging sequences
subject: Technical aspects
subject: Education and training
subject: Neoplasia
subject: Tissue characterisation

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: Learning Points 1. SWI-Phase can be used to identify calcifications on MRI. 2. Certain SWI patterns can correlate with tumor histologic type. 3. SWI can discriminate mature from immature components of desmoid tumors. 4. SWI patterns can help assess...
Early and Late-time Cosmic Acceleration in Non-minimal Yang-Mills-$f(G)$ Gravity
Creators: name: Banijamali, A.
name: Fazlpour, B.
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Physics (physics.gen-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: In this paper we show that power-law inflation can be realized in non-minimal gravitational coupling of Yang-Mills field with a general function of the Gauss-Bonnet invariant in the framework of Einstein gravity. Such a non-minimal coupling may appear due to quantum corrections. We also discuss the non-minimal Yang-Mills-$f(G)$ gravity in the framework of modified Gauss-Bonnet action which is widely studied recently. It is shown that both inflation and late-time cosmic acceleration are possible in such a theory.
description: 13 pages, no figures, v2 references added, Minor typos corrected
Terahertz radiation-induced conductivity, Kerr and Faraday angles, and spin textures in a two-dimensional electron gas with spin-orbit coupling subjected to a high magnetic field and periodic potential
Creators: name: Perov, A. A.
name: Solnyshkova, L. V.
name: Khomitsky, D. V.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The terahertz radiation-induced conductivity and dielectric polarization tensors as well as the Faraday and Kerr rotation angles and the non-equilibrium spin textures are studied for two-dimensional electron gas with strong spin-orbit coupling subjected to high magnetic field and to tunable periodic potential of a two-dimensional gated superlattice. It is found that both real and imaginary parts of the frequency-dependent induced conductivity approach maximum values with sharp and detectable peaks at frequencies corresponding to the inter-subband transitions between spin-split magnetic subbands. The observed properties of the conductivity tensor frequency dependence are applied for the description of the Kerr and Faraday rotation angles which can be used as another experimental tool for describing the electron gas in periodic structures with significant spin-orbit coupling. The formation of radiation-induced spin textures is predicted having both in-plane and out-of-plane components with space distribution scale comparable to the superlattice cell size which can be observed experimentally.
description: 9 pages, 6 figures
title: Role of multiparametric MRI in detection and local staging of prostate cancer- clinical dilemmas revisited
Creators: name: Joseph, Sajin
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Genital / Reproductive system male
subject: Oncology
subject: MR
subject: Biopsy
subject: Staging
subject: Multidisciplinary cancer care

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: To discuss MRI reporting approach in biopsy-naive vs. established prostate cancer (PCa) scenarios and their implications on...
The Bel-Robinson tensor for topologically massive gravity
Creators: name: Deser, S.
name: Franklin, J.
Publisher: name: arXiv
Year: 2010
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We construct, and establish the (covariant) conservation of, a 4-index "super-stress tensor" for TMG. Separately, we discuss its invalidity in quadratic curvature models and suggest a generalization.
description: Published version
title: Second cancer after radiation therapy for primary malignancy
Creators: name: SHUKLA, SHREYA
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Oncology
subject: Radioprotection / Radiation dose
subject: CT
subject: MR
subject: Ultrasound
subject: Radiation effects
subject: Biological effects

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: To familiarize the radiologists with second neoplasms that develop after radiation therapy for primary...
title: A Novel Automatic Whole-body Metastasis Delineation Method for Total-body PET/CT
Creators: name: Wang, Yining
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Artificial Intelligence
subject: PET-CT
subject: eLearning
subject: Artifacts
subject: Cancer

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: Early detection of locally recurrent and metastatic prostate cancer lesions has always been a major problem for patients after radical prostatectomy, and routine clinical diagnosis requires accurate and efficient delineation methods. In this study,...
title: Fluoroscopy-Upper gastrointestinal series imaging following Whipple procedure: A pictorial essay of normal postoperative findings and complications.
Creators: name: Gori, Elisabetta
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Abdomen
subject: Gastrointestinal tract
subject: Small bowel
subject: Fluoroscopy
subject: Contrast agent-oral
subject: Education
subject: Education and training

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: The purpose of this educational exhibit is to explain the normal post-operative anatomy and the patterns of gastrointestinal (GI) tract-complications after Whipple procedure with fluoroscopy-upper GI series, to allow the radiologist to make an...
title: Front Polisario and the Exploitation of Natural Resources by the Administrative Power
Creators: name: Milano, Enrico
Publisher: name: European Papers (www.europeanpapers.eu)
Year: 2017
Subjects: subject: non-self-governing territories
subject: exploitation of natural resources
subject: powers and obligations of administrative power
subject: Western Sahara
subject: consultation
subject: CJEU

description: European Papers - A Journal on Law and Integration, 2017 2(3), 953-966
description: I. The EU judiciary faced with the exploitation of natural resources in Western Sahara. - II. Administrative powers and the exploitation of natural resources in non-self-governing territories. - III. "Grey areas" and unsettled issues. - IV. Of the uncertainty principle and of Voelkerrecthsfreundlichkeit.
description: Drawing from the recent Front Polisario judgments of the General Court (judgment of 10 December 2015, case T-512/12, Front Polisario v. Council of the European Union) and the Court of Justice (judgment of 21 December 2016, case C-104/16 P, Council of the European Union v. Front Polisario [GC]), the present Dialogue questions whether and to what extent international law limits the power of a State administering a non-self-governing territory to dispose of the latter's natural resources. While in recent times we have seen a distinctive consolidation of international practice backed by a widespread expression of opinio juris pointing to the emergence of a customary rule substantially limiting the powers and rights over natural resources of States exercising authority over non-self-governing territories, elements of uncertainty remain as to the precise content of such rule and its coordination with concurring and potentially applicable legal regimes. It is also submitted that the recent judgment of the Court of Justice, while avoiding to rule on the matter in point, has reinforced the view that exploitation of natural resources in NSGTs shall be conducted with a full and substantial involvement of the representatives of the people.
title: Possibilities of volumetric CT coronary angiography and CT perfusion of the myocardium in the diagnosis of coronary heart disease.
Creators: name: Tursunova, Lobar
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Arteries / Aorta
subject: Cardiac
subject: Cardiovascular system
subject: CT
subject: CT-Angiography
subject: Image manipulation / Reconstruction
subject: Comparative studies
subject: Contrast agent-intravenous
subject: Diagnostic procedure
subject: Arteriosclerosis
subject: Cardiac Assist Devices
subject: Ischaemia / Infarction

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: To determine the diagnostic significance of volumetric CT in the study of the state of the coronary artery and the left ventricular myocardium in patients with coronary artery...
Effective quantum pseudospin-1/2 model for Yb pyrochlore oxides
Creators: name: Onoda, Shigeki
Publisher: name: arXiv
Year: 2011
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: An effective quantum pseudospin-1/2 Hamiltonian for Yb_2TM_2O_7 (TM = Ti and Sn) is obtained in terms of the atomic Kramers ground doublet of the LS coupling and the crystalline electric field, which is almost described with J^z=\pm 1/2. It is calculated microscopically as the sum of Anderson's superexchange interaction and the magnetic dipole interaction. It is found that it shows a strong exchange anisotropy.
description: 6 pages including 2 figures
title: ÐÐ±ÑÐ°Ð· "Ñ Ð¾ÑÐ¾ÑÐµÐ³Ð¾" ÑÑÐ¸ÑÐµÐ»Ñ Ð² Ð¿ÑÐµÐ´ÑÑÐ°Ð²Ð»ÐµÐ½Ð¸Ð¸ ÑÑÐ°ÑÐ¸Ñ ÑÑ Ð¾ÑÐ½Ð¾Ð²Ð½Ð¾Ð¹ Ð¸ ÑÑÐ°ÑÑÐµÐ¹ ÑÐºÐ¾Ð»Ñ
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: The image of a "good" teacher in the representation of primary and high school students
Creators: name: Ð¦Ð¸Ð¼Ð¾ÑÐµÐ½ÐºÐ¾, Ð¢Ð°ÑÑÑÐ½Ð°
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2019
Subjects: Ð¿ÐµÐ´Ð°Ð³Ð¾Ð³
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teacher
image
image of a teacher
teenager
personal characteristics

description: Ð Ð´Ð°Ð½Ð½Ð¾Ð¹ ÑÐ°Ð±Ð¾ÑÐµ Ð¸Ð·ÑÑÐµÐ½Ñ ÑÐµÐ¾ÑÐµÑÐ¸ÑÐµÑÐºÐ¸Ðµ Ð¿Ð¾Ð´ÑÐ¾Ð´Ñ Ðº ÑÐ¾ÑÐ¼Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð¿ÑÐµÐ´ÑÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ Ð¾ ÑÐ¾ÑÐ¾ÑÐµÐ¼ ÑÑÐ¸ÑÐµÐ»Ðµ ÑÑÐµÐ´Ð¸ ÑÑÐ°ÑÐ¸ÑÑÑ. Ð Ð°ÑÑÐ¼Ð¾ÑÑÐµÐ½Ñ Ð»Ð¸ÑÐ½Ð¾ÑÑÐ½ÑÐµ Ð¾ÑÐ¾Ð±ÐµÐ½Ð½Ð¾ÑÑÐ¸ ÑÑÐ°ÑÐ¸ÑÑÑ Ð¾ÑÐ½Ð¾Ð²Ð½Ð¾Ð¹ Ð¸ ÑÑÐµÐ´Ð½ÐµÐ¹ ÑÐºÐ¾Ð»Ñ. ÐÑÐ¾Ð²ÐµÐ´ÐµÐ½Ð¾ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ Ð¿ÑÐµÐ´ÑÑÐ°Ð²Ð»ÐµÐ½Ð¸Ñ Ð¾ ÑÐ¾ÑÐ¾ÑÐµÐ¼ ÑÑÐ¸ÑÐµÐ»Ðµ Ñ ÑÑÐ°ÑÐ¸ÑÑÑ Ð¾ÑÐ½Ð¾Ð²Ð½Ð¾Ð¹ Ð¸ ÑÑÐ°ÑÑÐµÐ¹ ÑÐºÐ¾Ð»Ñ.
description: In this paper, theoretical approaches to the formation of the idea of a good teacher among students are studied. Personal features of pupils of the basic and high school are considered. A study of the idea of a good teacher in primary and high school students.
title: Know the shadows: a pictorial review of benign breast lesions that cause posterior acoustic shadow.
Creators: name: Altamirano S. , Aleen Vanessa
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Breast
subject: Interventional non-vascular
subject: Mammography
subject: Ultrasound
subject: Ultrasound-Colour Doppler
subject: Biopsy
subject: Education
subject: Screening
subject: Calcifications / Calculi
subject: Cancer

description: Learning objectives Background Findings and procedure details Conclusion Personal information and conflict of interest References
description: Learning objectives: -To review the variety of breast lesions that cause acoustic shadowing. -To explain the most relevant radiologic findings of benign breast lesions in different imaging...
Cooper Pair's Magnetic Moment in MCFL Color Superconductivity
Creators: name: Feng, Bo
name: Ferrer, Efrain J.
name: de la Incera, Vivian
Publisher: name: arXiv
Year: 2011
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We investigate the effect of the alignment of the magnetic moments of Cooper pairs of charged quarks that form at high density in three-flavor quark matter. The high density phase of this matter in the presence of a magnetic field is known to be the Magnetic Color-Flavor-Locked (MCFL) phase of color superconductivity. We derive the Fierz identities of the theory and show how the explicit breaking of the rotational symmetry by the uniform magnetic field field opens new channels of interactions and allows the formation of a new diquark condensate. The new order parameter is a spin-1 diquark condensate proportional to the component in the field direction of the average magnetic moment of the pairs of charged quarks. In the region of large fields, the new condensate's magnitude becomes comparable to the larger of the two scalar gaps. Since there is no solution of the gap equations with nonzero scalar gaps and zero value of this magnetic moment condensate, its presence in the MCFL phase is unavoidable. This is consistent with the fact that the extra condensate does not break any symmetry that has not already been broken by the known MCFL gaps. The spin-1 condensate enhances the condensation energy of pairs formed by charged quarks and the magnetization of the system. We discuss the possible consequences of the new order parameter on the issue of the chromomagnetic instability that appears in color superconductivity at moderate density.
description: 17 pages, 5 figures. New references added, typos corrected. To appear in NPB
Mental health and happiness of healthcare workers : narrative review, realist review, and proposed study design
Creators: name: Gray, Patricia
Publisher: name: University of British Columbia
Year: 2019

description: Introduction: Healthcare workers experience high rates of mental ill health such as burnout, stress and depression, due to workplace conditions including excessive workloads, workplace violence and bullying. Based on the significant burden of mental ill health in the healthcare workforce as well as the recognized need for research on how to promote mental health in the workplace, this thesis aims to synthesize the state of knowledge in this area and chart future research that would be useful to provide further evidence-based insight on ways to promote mental health of healthcare workers. Methods: This thesis comprises three components needed to advance knowledge in this field: a narrative review on the mental health of healthcare workers, a realist review on workplace-based interventions to promote mental wellbeing among healthcare workers, and a detailed proposal for a three-phased cluster randomized controlled trial to develop and evaluate workplace-based interventions to promote mental wellbeing among healthcare workers in Gauteng, South Africa. Results: The narrative review affirmed the significant burden of mental ill health among healthcare workers and the need for workplace-based solutions to improve the current situation. In addition, the narrative review highlighted the growing recognition and adoption of positive mental health constructs such as happiness while also highlighting the complexity and challenges involved in workplace-based health promotion. Similarly, the realist review highlighted the complexities of both mental health in the workplace and the implementation and evaluation of workplace-based interventions, as well as issues of sustainability, the importance of employee engagement, and challenges around aligning organizational-level factors to affect change in individuals’ mental health. Lastly, the proposed study presents a comprehensive approach to designing, developing, implementing, and evaluating workplace-based interventions to promote mental wellbeing among a diverse and distributed healthcare workforce. Discussion: With healthcare workers experiencing significant mental ill health in various professions, countries and settings around the world, there is an urgent need to test and evaluate workplace-based interventions to promote mental wellbeing within this sector. In particular, more research from low- and middle-income countries is needed, as well as more research on organizational-level changes that can be done to improve healthcare workers’ mental wellbeing.
title: ÐÐ³ÑÐ°Ð´Ð¸ÑÐµÐ»ÑÐ½Ð¾Ðµ ÑÐ¾Ð¾ÑÑÐ¶ÐµÐ½Ð¸Ðµ Ñ Ð¿Ð¾ÑÐµÐ»ÐºÐ° Ð¡Ð°Ð±ÐµÑÑÐ°
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð±Ð°ÐºÐ°Ð»Ð°Ð²ÑÐ°
titleType: Subtitle
title: Fencing structures near the village of Sabetta
Creators: name: Ð£ÐºÐ¾Ð»Ð¾Ð², Ð®ÑÐ¸Ð¹
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2021
Subjects: Ð¾Ð³ÑÐ°Ð´Ð¸ÑÐµÐ»ÑÐ½Ð¾Ðµ ÑÐ¾Ð¾ÑÑÐ¶ÐµÐ½Ð¸Ðµ
Ð¼Ð¾Ð»
Ð¾Ð±ÑÐºÐ½Ð¾Ð²ÐµÐ½Ð½ÑÐµ Ð¼Ð°ÑÑÐ¸Ð²Ñ
Ð¼Ð°ÑÑÐ¸Ð²Ð½Ð°Ñ ÐºÐ»Ð°Ð´ÐºÐ°
Ð³ÑÐ°Ð²Ð¸ÑÐ°ÑÐ¸Ð¾Ð½Ð½Ð¾Ðµ ÑÐ¾Ð¾ÑÑÐ¶ÐµÐ½Ð¸Ðµ
guarding structure
mall
ordinary arrays
massive masonry
gravitational structure

description: ÐÐ±ÑÐµÐºÑ Ð¿ÑÐ¾ÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ: Ð¾Ð³ÑÐ°Ð´Ð¸ÑÐµÐ»ÑÐ½ÑÐµ Ð³ÑÐ°Ð²Ð¸ÑÐ°ÑÐ¸Ð¾Ð½Ð½ÑÐµ ÑÐ¾Ð¾ÑÑÐ¶ÐµÐ½Ð¸Ñ Ð²ÐµÑÑÐ¸ÐºÐ°Ð»ÑÐ½Ð¾Ð³Ð¾ ÑÐ¸Ð¿Ð°. Ð¦ÐµÐ»Ñ ÑÐ°Ð±Ð¾ÑÑ: Ð·Ð°Ð¿ÑÐ¾ÐµÐºÑÐ¸ÑÐ¾Ð²Ð°ÑÑ, ÑÐ°ÑÑÑÐ¸ÑÐ°ÑÑ Ð¸ ÑÑÐ°Ð²Ð½Ð¸ÑÑ Ð¼ÐµÐ¶Ð´Ñ ÑÐ¾Ð±Ð¾Ð¹ Ñ Ð¿Ð¾Ð¼Ð¾ÑÑÑ ÑÐºÐ¾Ð½Ð¾Ð¼Ð¸ÑÐµÑÐºÐ¾Ð³Ð¾ ÑÐ°ÑÑÐµÑÐ° Ð´Ð²Ð° ÑÐ¸Ð¿Ð° Ð¾Ð³ÑÐ°Ð´Ð¸ÑÐµÐ»ÑÐ½ÑÑ Ð³ÑÐ°Ð²Ð¸ÑÐ°ÑÐ¸Ð¾Ð½Ð½ÑÑ ÑÐ¾Ð¾ÑÑÐ¶ÐµÐ½Ð¸Ð¹: Ð¸Ð· Ð¼Ð°ÑÑÐ¸Ð²Ð¾Ð²-Ð³Ð¸Ð³Ð°Ð½ÑÐ¾Ð² Ð¸ Ð¾Ð±ÑÐºÐ½Ð¾Ð²ÐµÐ½Ð½ÑÑ Ð¼Ð°ÑÑÐ¸Ð²Ð¾Ð² Ð² ÑÐ°Ð¹Ð¾Ð½Ðµ Ð¿Ð¾ÑÐµÐ»ÐºÐ° Ð¡Ð°Ð±ÐµÑÑÐ°, ÑÐ¾Ð±Ð»ÑÐ´Ð°Ñ Ð½Ð¾ÑÐ¼Ð°ÑÐ¸Ð²Ð½ÑÐµ, Ð¿ÑÐ¾ÑÐ½Ð¾ÑÑÐ½ÑÐµ Ð¸ ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð²Ð½ÑÐµ ÑÑÐµÐ±Ð¾Ð²Ð°Ð½Ð¸Ñ. Ð ÐµÐ·ÑÐ»ÑÑÐ°Ñ ÑÐ°Ð±Ð¾ÑÑ: Ð³Ð¾ÑÐ¾Ð²ÑÐ¹ Ð¿ÑÐ¾ÐµÐºÑ Ð¿Ð¾ Ð±Ð¾Ð»ÐµÐµ Ð²ÑÐ³Ð¾Ð´Ð½Ð¾Ð¼Ñ ÑÐ¸Ð¿Ñ Ð¾Ð³ÑÐ°Ð´Ð¸ÑÐµÐ»ÑÐ½Ð¾Ð³Ð¾ ÑÐ¾Ð¾ÑÑÐ¶ÐµÐ½Ð¸Ñ. ÐÐ±Ð»Ð°ÑÑÑ Ð¿ÑÐ¸Ð¼ÐµÐ½ÐµÐ½Ð¸Ñ ÑÐµÐ·ÑÐ»ÑÑÐ°ÑÐ¾Ð² ÑÐ°Ð±Ð¾ÑÑ: Ð²ÑÑÐ²Ð»ÐµÐ½Ð¸Ðµ Ð¾Ð¿ÑÐ¸Ð¼Ð°Ð»ÑÐ½Ð¾Ð³Ð¾ ÑÐ¸Ð¿Ð° ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð¸ Ð¼Ð¾Ð»Ð° Ð¸ Ð¿ÑÐ¸Ð½ÑÑÐ¸Ðµ ÐºÐ¾Ð½ÑÑÑÑÐºÑÐ¸Ð²Ð½ÑÑ ÑÐµÑÐµÐ½Ð¸Ð¹ Ð² Ð²Ð¾Ð¿ÑÐ¾ÑÐ°Ñ ÑÑÑÐ¾Ð¸ÑÐµÐ»ÑÑÑÐ²Ð° Ð¾Ð³ÑÐ°Ð´Ð¸ÑÐµÐ»ÑÐ½ÑÑ ÑÐ¾Ð¾ÑÑÐ¶ÐµÐ½Ð¸Ð¹. ÐÐ¶Ð¸Ð´Ð°ÐµÐ¼ÑÐ¹ ÑÑÑÐµÐºÑ Ð¾Ñ ÑÐ°Ð±Ð¾ÑÑ: Ð¿ÑÐ¸Ð²Ð»ÐµÑÐµÐ½Ð¸Ðµ Ð²Ð½Ð¸Ð¼Ð°Ð½Ð¸Ñ Ðº Ð²ÑÐ³Ð¾Ð´Ð½Ð¾ÑÑÐ¸ Ð¸ÑÐ¿Ð¾Ð»ÑÐ·Ð¾Ð²Ð°Ð½Ð¸Ñ ÑÑÐ¿ÑÑÐ¸Ñ Ð¼Ð°ÑÐµÑÐ¸Ð°Ð»Ð¾Ð² Ð² ÐºÐ°ÑÐµÑÑÐ²Ðµ Ð·Ð°Ð¿Ð¾Ð»Ð½Ð¸ÑÐµÐ»Ñ Ð´Ð»Ñ Ð¼Ð°ÑÑÐ¸Ð²Ð¾Ð²-Ð³Ð¸Ð³Ð°Ð½ÑÐ¾Ð².
description: Object of design: vertical gravity containment structures. Work purpose: to design, calculate and compare with the help of an economic calculation two types of protective gravity structures: from giant massifs and ordinary massifs in the area of the village of Sabetta, observing the regulatory, strength and design requirements. The result of the work: a finished project for a more profitable type of protective structure. Scope of the results of the work: identifying the optimal type of pier structure and making constructive decisions in the construction of protective structures. Expected effect of the work: drawing attention to the profitability of using bulk materials as an aggregate for giant massifs.
Statistics of reversible bond dynamics observed in force-clamp spectroscopy
Creators: name: Diezemann, Gregor
name: Schlesier, Thomas
name: Geil, Burkhard
name: Janshoff, Andreas
Publisher: name: arXiv
Year: 2010
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We present a detailed analysis of two-state trajectories obtained from force-clamp spectroscopy (FCS) of reversibly bonded systems. FCS offers the unique possibility to vary the equilibrium constant in two-state kinetics, for instance the unfolding and refolding of biomolecules, over many orders of magnitude due to the force dependency of the respective rates. We discuss two different kinds of counting statistics, the event-counting usually employed in the statistical analysis of two-state kinetics and additionally the so-called cycle-counting. While in the former case all transitions are counted, cycle-counting means that we focus on one type of transitions. This might be advantageous in particular if the equilibrium constant is much larger or much smaller than unity because in these situations the temporal resolution of the experimental setup might not allow to capture all transitions of an event-counting analysis. We discuss how an analysis of FCS data for complex systems exhibiting dynamic disorder might be performed yielding information about the detailed force-dependence of the transition rates and about the time scale of the dynamic disorder. In addition, the question as to which extent the kinetic scheme can be viewed as a Markovian two-state model is discussed.
description: 25 pages, 10 figures, Phys. Rev. E, in press
Reciprocal Relations Between Kinetic Curves
Creators: name: Yablonsky, G. S.
name: Gorban, A. N.
name: Constales, D.
name: Galvita, V.
name: Marin, G. B.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Chemical Physics (physics.chem-ph)
subject: FOS: Physical sciences

description: We study coupled irreversible processes. For linear or linearized kinetics with microreversibility, $\dot{x}=Kx$, the kinetic operator $K$ is symmetric in the entropic inner product. This form of Onsager's reciprocal relations implies that the shift in time, $\exp (Kt)$, is also a symmetric operator. This generates the reciprocity relations between the kinetic curves. For example, for the Master equation, if we start the process from the $i$th pure state and measure the probability $p_j(t)$ of the $j$th state ($j\neq i$), and, similarly, measure $p_i(t)$ for the process, which starts at the $j$th pure state, then the ratio of these two probabilities $p_j(t)/p_i(t)$ is constant in time and coincides with the ratio of the equilibrium probabilities. We study similar and more general reciprocal relations between the kinetic curves. The experimental evidence provided as an example is from the reversible water gas shift reaction over iron oxide catalyst. The experimental data are obtained using Temporal Analysis of Products (TAP) pulse-response studies. These offer excellent confirmation within the experimental error.
description: 6 pages, 1 figure, the final version
Exploring protein structure-function relationships in xanthanases from glycoside hydrolase family 9
Creators: name: McDonald, Sean
Publisher: name: University of British Columbia
Year: 2019

description: The hydrolysis of xanthan is a commercially relevant reaction. This is due to the widespread use of this polysaccharide as a rheology modifier in many industries. Therefore, investigations into the structure and function of enzymes capable of altering xanthan properties, including endo-xanthanases, is warranted. This thesis describes investigations into the structure-function relationship of PspXan9, a bacterial xanthanase from glycoside hydrolase family 9 (GH9). To do this, enzyme kinetic assays were performed to determine preferred biochemical conditions, substrate specificity and Michaelis-Menten kinetics. These revealed that PspXan9 was highly specific for xanthan following a pretreatment with xanthan lyase, and notably, required calcium for increased activity and stability. The appearance of only two products over the course of a reaction, as monitored by high-performance size exclusion chromatography coupled to a UV-detector (HPSEC-UV), demonstrated that hydrolysis of lyase-treated xanthan with PspXan9 occurred in a processive fashion. However, the identity of these products as lyase-treated xanthan tetrasaccharides and octasaccharides was only realized following analysis with liquid chromatography coupled to mass spectrometry (LC-MS), tandem mass spectrometry (MS/MS) and 1D- and 2D-Nuclear Magnetic Resonance (NMR). Analysis of the PspXan9 x-ray crystal structure was used to reveal structural insights that guided targeted mutations to perform subsite mapping. Changes resulting from each mutation were tested for activity, and degree of processivity through viscometric and HPSEC-UV analysis. Lastly, protein similarity networks were utilized to find a putative GH9 xanthanase subgroup as well as a possible progenitor GH9 whose protein expression was attempted.
title: Severity of hyperechoic pancreas on preoperative ultrasonography : High potential as a clinically useful predictor of post-operative pancreatic fistula
Creators: name: Hong, Jung Joo
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Abdomen
subject: Biliary Tract / Gallbladder
subject: Pancreas
subject: CT
subject: Ultrasound
subject: Diagnostic procedure
subject: Efficacy studies
subject: Surgery
subject: Fistula
subject: Image verification

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: Introduction Postoperative pancreatic fistula (POPF) is one of the most serious complications after pancreatectomy and is closely associated with postoperative mortality and morbidity. Although several preoperative risk factors have been reported,...
Counting atoms in a deep optical microtrap
Creators: name: McGovern, Matthew
name: Hilliard, Andrew
name: Grünzweig, Tzahi
name: Andersen, Mikkel F.
Publisher: name: arXiv
Year: 2010
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We demonstrate a method to count small numbers of atoms held in a deep, microscopic optical dipole trap by collecting fluorescence from atoms exposed to a standing wave of light that is blue detuned from resonance. While scattering photons, the atoms are also cooled by a Sisyphus mechanism that results from the spatial variation in light intensity. The use of a small blue detuning limits the losses due to light assisted collisions, thereby making the method suitable for counting several atoms in a microscopic volume.
(2) MeDIP-seq
Creators: name: Pena Centeno, Tonatiuh
Publisher: name: figshare
Year: 2016
Subjects: subject: Behavioral Neuroscience
subject: 60102 Bioinformatics
subject: FOS: Computer and information sciences

description: [Add description]
EPIGENOME BROWSER----------------------------------https://memory-epigenome-browser.dzne.de/

GEO accession: GSE7496------------------------------------http://www.ncbi.nlm.nih.gov/geo/query/acc.cgi?acc=GSE74965
Two-dimensional surface charge transport in topological insulators
Creators: name: Culcer, Dimitrie
name: Hwang, E. H.
name: Stanescu, Tudor D.
name: Sarma, S. Das
Publisher: name: arXiv
Year: 2010
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We construct a theory of charge transport by the surface states of topological insulators in three dimensions. The focus is on the experimentally relevant case when the electron doping is such that the Fermi energy $ε_F$ and transport scattering time $τ$ satisfy $ε_F τ/\hbar \gg 1$, but sufficiently low that $ε_F$ lies below the bottom of the conduction band. Our theory is based on the spin density matrix and takes the quantum Liouville equation as its starting point. The scattering term is determined accurately to linear order in the impurity density. We consider scattering by charged impurities and short-range scatterers such as surface roughness. We calculate also the polarization function in topological insulators, emphasizing the differences from graphene. We find that the main contribution to the conductivity is $\propto n_i^{-1}$, where $n_i$ is the impurity density, and will have different carrier density dependencies for different forms of scattering. Two different contributions to this conductivity are traced to the scalar and spin-dependent terms in the Hamiltonian and their relative weight depends on the doping density. Our results contain all contributions to the conductivity to orders zero and one in the impurity density. We discuss also a way to determine the dominant scattering angles by studying the ratio of the transport relaxation time to the Bloch lifetime as a function of the Wigner-Seitz radius $r_s$. We also discuss the effect on the surface states of adding metallic contacts.
description: 20 pages, 3 figures
title: Breast DCE-MRI Tumor Segmentation By Learning Contrast Features
Creators: name: Guo, Shanshan
Publisher: name: European Congress of Radiology
Year: 2023
Subjects: subject: Artificial Intelligence
subject: Breast
subject: MR
subject: CAD
subject: Computer Applications-Detection, diagnosis
subject: Cancer

description: Purpose Methods and materials Results Conclusion Personal information and conflict of interest References
description: Purpose: Breast cancer is one of the most common cancers in women worldwide. Studies have shown that early diagnosis and treatment of breast cancer can significantly reduce the mortality rate. Mammography, ultrasound, and MRI are commonly used in the...