cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Optimization and evaluation of four multi-residue methods for the determination of pesticide residues in orange oil using LC-MS/MS and GC-MS/MS: a comparative study
Creators: name: Elshabrawy, Mahmoud S.
name: Khorshid, Mona A.
name: Abdelwahed, Mahmoud Hamdy
name: Abo-Aly, Mohamed M.
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biophysics
subject: Biochemistry
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Biological Sciences not elsewhere classified
subject: Inorganic Chemistry
subject: FOS: Chemical sciences

description: Orange oil is considered the largest produced essential oils worldwide due to its unique properties. Pesticide residues in orange oil are expected to be much higher than the original fruit due to orange peel’s cold-pressing during orange oil production. These residuesmaycause various health problems if consumed. The purpose of our study was to optimize and compare four multi-residues extraction methods (dilution, QuEChERS, ethyl acetate, and mini-Luke) for analysis of 387 pesticides in orange oil using LC-MS/MS and GC-MS/MS. To our knowledge, this is the first report on the use of ethyl acetate and the mini-Luke method for the analysis of orange oil. The comparison was based on recoveries, matrix effect, and the amount of co-extract matrix. The optimum mean recoveries were obtained by the ethyl acetate method, which successfully analyzes 371 out of 387 pesticides with acceptable recovery (70–120%). It also showed a narrow recovery distribution in the range of 90–110% for 69% of all studied pesticides. Regarding the matrix effect, the QuEChERS method gave the highest number of pesticides with an in significant matrix effect (80–120%) for both LC and GC amenable pesticides. The least amount of co-extract matrix components according to GC-MS/MS scan and gravimetric analysis has been achieved by the QuEChERS method. In conclusion, the Ethyl acetate method gives acceptable recovery for a wide range of pesticides with a narrow recovery distribution and a moderate amount of co-extract matrix. While the QuEChERS method provides better selectivity and cleaner extract but with a narrow scope and less precision.
A flexible Bayesian hierarchical model of preterm birth risk among US Hispanic subgroups in relation to maternal nativity and education
Creators: name: Torrone, Elizabeth
Publisher: name: BioMed Central Ltd
Year: 2011

description: Abstract: Background: Previous research has documented heterogeneity in the effects of maternal education on adverse birth outcomes by nativity and Hispanic subgroup in the United States. In this article, we considered the risk of preterm birth (PTB) using 9 years of vital statistics birth data from New York City. We employed finer categorizations of exposure than used previously and estimated the risk dose-response across the range of education by nativity and ethnicity. Methods: Using Bayesian random effects logistic regression models with restricted quadratic spline terms for years of completed maternal education, we calculated and plotted the estimated posterior probabilities of PTB (gestational age < 37 weeks) for each year of education by ethnic and nativity subgroups adjusted for only maternal age, as well as with more extensive covariate adjustments. We then estimated the posterior risk difference between native and foreign born mothers by ethnicity over the continuous range of education exposures. Results: The risk of PTB varied substantially by education, nativity and ethnicity. Native born groups showed higher absolute risk of PTB and declining risk associated with higher levels of education beyond about 10 years, as did foreign-born Puerto Ricans. For most other foreign born groups, however, risk of PTB was flatter across the education range. For Mexicans, Central Americans, Dominicans, South Americans and “Others”, the protective effect of foreign birth diminished progressively across the educational range. Only for Puerto Ricans was there no nativity advantage for the foreign born, although small numbers of foreign born Cubans limited precision of estimates for that group. Conclusions: Using flexible Bayesian regression models with random effects allowed us to estimate absolute risks without strong modeling assumptions. Risk comparisons for any sub-groups at any exposure level were simple to calculate. Shrinkage of posterior estimates through the use of random effects allowed for finer categorization of exposures without restricting joint effects to follow a fixed parametric scale. Although foreign born Hispanic women with the least education appeared to generally have low risk, this seems likely to be a marker for unmeasured environmental and behavioral factors, rather than a causally protective effect of low education itself.
title: Investigation of breast tissue pattern variation in digital mammogram using fractal analysis
Creators: name: Lai, Yau Ming
Publisher: name: The Royal Australian and New Zealand College of Radiologists
Year: 2014
Subjects: subject: Breast
subject: Mammography
subject: Image manipulation / Reconstruction
subject: Fractal analysis
subject: Cancer

description: Aim Methods and materials Results Conclusion Personal information References
description: Aim: Breast cancer accounts for one-third of all cancer diagnoses among women. It is the second highest mortality rate of all cancer deaths [1]. Breast cancer risk is associated with mammographic image density.Changes in mammographic image density may be...
Enhanced adsorption removal of methyl orange from water by porous bimetallic Ni/Co MOF composite: a systematic study of adsorption kinetics
Creators: name: Nazir, Muhammad Altaf
name: Najam, Tayyaba
name: Zarin, Kinza
name: Shahzad, Khurram
name: Javed, Muhammad Sufyan
name: Jamshaid, Muhammad
name: Bashir, Muhammad Aswad
name: Shah, Syed Shoaib Ahmad
name: Rehman, Aziz Ur
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biophysics
subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Inorganic Chemistry
subject: FOS: Chemical sciences

description: Zeolitic imidazole frameworks (ZIFs) and their derivatives, being an emergent category of adsorbents, are anticipated to adsorb organic dyes from aqueous mediums. Herein, ZIF-67 and Ni-doped ZIF-67 were designated due to their high stability in aqueous mediums, porosity and straightforward synthesis. Porous Ni-doped ZIF-67 nanocomposite was produced by doping secondary metal (Ni) to ZIF-67. The fabricated Ni@ZIF-67 showed excellent adsorption efficiency to adsorb methyl orange from water. The performance of Ni-doped ZIF-67 was analysed by varying pH, contact time with adsorbent and concentration of dye. Results exposed that the Ni@ZIF-67 nanocomposite adsorbs more dye in mild acidic condition (qe = 24.24 mg. g−1 pH = 6) as compared to acidic (qe = 17.69 mg. g−1 pH = 2) and basic medium (qe = 15.74 mg. g−1 pH = 10). Langmuir, Freundlich and Dubinin-Radushkevich adsorption isotherm models were applied and results showed that Langmuir model proved to be best fitted, suggesting adsorption process as monolayer. The maximum adsorption capacity attained was 151.74 mg. g−1 with excellent recycling performance up to fifth cycle. Also with 180 min contact time, 68.5 and 82.9% of MO were adsorbed by ZIF-67 and Ni-doped ZIF-67 nanocomposite, respectively. Consequently, the as-synthesised Ni@ZIF-67 could be a prospective adsorbent material for methyl orange elimination from polluted water.
Associations between stress and working memory in an emotional context – an ABCD study
Creators: name: Sisk, Lucinda
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Social and Behavioral Sciences
subject: abcd
subject: abcdstudy
subject: emotion
subject: fmri
subject: nback
subject: neuroimaging
subject: stress
subject: trauma
subject: workingmemory

description: The effects of early-life stress on brain and behavior are manifold. In particular, exposure to stressful events during childhood is known to alter cognitive faculties such as attention, memory, and emotion regulation (Bücker et al., 2012; Marusak et al., 2014), and increase risk for developing both internalizing and externalizing disorders (Green et al., 2010). Children exposed to early-life stress demonstrate differential responses to emotional stimuli (Gee et al., 2013; Humphreys et al., 2016) and during cognitive tasks assessing attention and working memory (Bücker et al., 2012; Lee & Hoaken, 2007). Emotion-cognition interactions may be highly relevant for daily functioning during childhood, yet such interactions have remained relatively less explored. In the present study we aim to examine how experiences of early-life stress are associated with emotion processing and working memory (as assessed via the emotional N-back task in the Adolescent Brain Cognitive Development (ABCD) Study; (Casey, Cannonier, Conley, Cohen, Barch, Heitzeg, et al., 2018) during childhood. Specifically, we plan to examine whether early-life stress is related to behavioral performance during the N-back task and functional connectivity supporting working memory and emotion processing. We also plan to investigate interactions between emotion and working memory (i.e., whether emotion processing differs during high working memory blocks for children who have experienced more stress). Finally, we plan to investigate possible protective factors, in particular social support, that could buffer against the effects of stress. Delineating the effects of stress on working memory and emotion processing as well as factors that promote resilience has the potential to enhance our understanding of how stress influences cognitive and emotional development, and inform interventions targeted toward mitigating the effects of stressful experiences on development.
Steady-state propagation speed of rupture fronts along one-dimensional frictional interfaces
Creators: name: Amundsen, David Skålid
name: Trømborg, Jørgen Kjoshagen
name: Thøgersen, Kjetil
name: Katzav, Eytan
name: Malthe-Sørenssen, Anders
name: Scheibert, Julien
Publisher: name: arXiv
Year: 2015
Subjects: subject: Classical Physics (physics.class-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The rupture of dry frictional interfaces occurs through the propagation of fronts breaking the contacts at the interface. Recent experiments have shown that the velocities of these rupture fronts range from quasi-static velocities proportional to the external loading rate to velocities larger than the shear wave speed. The way system parameters influence front speed is still poorly understood. Here we study steady-state rupture propagation in a one-dimensional (1D) spring-block model of an extended frictional interface, for various friction laws. With the classical Amontons--Coulomb friction law, we derive a closed-form expression for the steady-state rupture velocity as a function of the interfacial shear stress just prior to rupture. We then consider an additional shear stiffness of the interface and show that the softer the interface, the slower the rupture fronts. We provide an approximate closed form expression for this effect. We finally show that adding a bulk viscosity on the relative motion of blocks accelerates steady-state rupture fronts and we give an approximate expression for this effect. We demonstrate that the 1D results are qualitatively valid in 2D. Our results provide insights into the qualitative role of various key parameters of a frictional interface on its rupture dynamics. They will be useful to better understand the many systems in which spring-block models have proved adequate, from friction to granular matter and earthquake dynamics.
description: 16 pages, 10 figures, 1 table
Differences in frequency and characteristics of medical complications in rehabilitation settings. A scoping review
Creators: name: ladbrook, elyse
name: Hutchinson, Ana
name: Bouchoucha, Stephane
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Medicine and Health Sciences
subject: Rehabilitation and Therapy
subject: Nursing
subject: FOS: Health sciences
subject: infection prevention and control
subject: inpatient rehabilitation
subject: medical complications

description: Scoping review
Cushing Syndrome in a 6-Month-Old Infant due to Adrenocortical Tumor
Creators: name: Volmar, KeithE
name: Calikoglu, Ali S
name: von Allmen, Daniel
name: Fudge, ElizabethB
Publisher: name: BioMed Central Ltd
Year: 2009

description: Cushing syndrome is rare in infancy and usually due to an adrenocortical tumor (ACT). We report an infant with Cushing syndrome due to adrenocortical carcinoma. The patient presented at six months of age with a three-month history of growth failure, rapid weight gain, acne, and irritability. Physical examination showed obesity, hypertension, and Cushingoid features. Biochemical evaluation showed very high serum cortisol, mildly elevated testosterone, and suppressed ACTH. Abdominal MRI revealed a heterogeneous right adrenal mass extending into the inferior vena cava. Evaluation for metastases was negative. The tumor was removed surgically en bloc. Pathologic examination demonstrated low mitotic rate, but capsular and vascular invasion. She received no adjuvant therapy. Her linear growth has improved and Cushingoid features resolved. Hormonal markers and quarterly PET scans have been negative for recurrence 24 months postoperatively. In conclusion, adrenocortical neoplasms in children are rare, but should be considered in the differential diagnosis of Cushing syndrome.
Shedding Light on the Asymmetric Learning Capability of AdaBoost
Creators: name: Landesa-Vázquez, Iago
name: Alba-Castro, José Luis
Publisher: name: arXiv
Year: 2015
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: In this paper, we propose a different insight to analyze AdaBoost. This analysis reveals that, beyond some preconceptions, AdaBoost can be directly used as an asymmetric learning algorithm, preserving all its theoretical properties. A novel class-conditional description of AdaBoost, which models the actual asymmetric behavior of the algorithm, is presented.
Phase Diagram and Entanglement of two interacting topological Kitaev chains
Creators: name: Herviou, Loïc
name: Mora, Christophe
name: Hur, Karyn Le
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: A superconducting wire described by a p-wave pairing and a Kitaev Hamiltonian exhibits Majorana fermions at its edges and is topologically protected by symmetry. We consider two Kitaev wires (chains) coupled by a Coulomb type interaction and study the complete phase diagram using analytical and numerical techniques. A topological superconducting phase with four Majorana fermions occurs until moderate interactions between chains. For large interactions, both repulsive and attractive, by analogy with the Hubbard model, we identify Mott phases with Ising type magnetic order. For repulsive interactions, the Ising antiferromagnetic order favors the occurrence of orbital currents spontaneously breaking time-reversal symmetry. By strongly varying the chemical potentials of the two chains, quantum phase transitions towards fully polarized (empty or full) fermionic chains occur. In the Kitaev model, the quantum critical point separating the topological superconducting phase and the polarized phase belongs to the universality class of the critical Ising model in two dimensions. When increasing the Coulomb interaction between chains, then we identify an additional phase corresponding to two critical Ising theories (or two chains of Majorana fermions). We confirm the existence of such a phase from exact mappings and from the concept of bipartite fluctuations. We show the existence of negative logarithmic corrections in the bipartite fluctuations, as a reminiscence of the quantum critical point in the Kitaev model. Other entanglement probes such as bipartite entropy and entanglement spectrum are also used to characterize the phase diagram. The limit of large interactions can be reached in an equivalent setup of ultra-cold atoms and Josephson junctions.
description: Final Version to be Published in Phys. Rev. B; 24 pages and 15 figures
VLT-FORS2 optical imaging and spectroscopy of 9 luminous type 2 AGN at 0.3
Creators: name: Humphrey, A.
name: Villar-Martín, M.
name: Almeida, C. Ramos
name: Tadhunter, C. N.
name: Arribas, S.
name: Bessiere, P. S.
name: Cabrera-Lavers, A.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We present optical imaging and long slit spectroscopic observations of 9 luminous type 2 AGNs within the redshift range 0.3
description: Accepted for publication in MNRAS. 17 pages
Semileptonic $Λ_c$ decay to $νl^+$ and $Λ(1405)$
Creators: name: Ikeno, N.
name: Oset, E.
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We study the semileptonic decay of $Λ_c$ to $νl^+$ and $Λ(1405)$, where the $Λ(1405)$ is seen in the invariant mass distribution of $πΣ$. We perform the hadronization of the quarks produced in the reaction in order to have a meson baryon pair in the final state and then let these hadron pairs undergo final state interaction from where the $Λ(1405)$ is dynamically generated. The reaction is particularly suited to study this resonance because we show that it filters I=0. It is also free of tree level $πΣ$ production, which leads to a clean signal of the resonance with no background. This same feature has as a consequence that one populates the state of the $Λ(1405)$ with higher mass around 1420 MeV, predicted by the chiral unitary approach. We make absolute predictions for the invariant mass distributions and find them within measurable range in present facilities. The implementation of this reaction would allow us to gain insight into the existence of the predicted two $Λ(1405)$ states and their nature as molecular states.
description: 7 pages, 5 figures
Evaluation of spatio-temporal variations in physico-chemical limnology, trophic status and cyanobacterial diversity of an impacted tropical reservoir, India for its sustainable management
Creators: name: Saha, Ajoy
name: Parakkandi, Jesna
name: Leela, Ramya Vijayakumar
name: Salim, Sibina Mol
name: Panikkar, Preetha
name: Eregowda, Vijaykumar Muttanahalli
name: Sarkar, Uttam Kumar
name: Das, Basanta Kumar
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Medicine
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Sociology
subject: FOS: Sociology
subject: Cancer
subject: Inorganic Chemistry
subject: FOS: Chemical sciences

description: For natural ecosystems as well as human development, freshwater bodies like reservoirs are critically important. Krishnagiri reservoir, a moderately impacted tropical reservoir of India, is an important source of freshwater. However, eutrophication status due to anthropogenic activities is a major threat to this reservoir. This endeavour aimed to determine the spatio-temporal differences for selected (21) limnological parameters along with trophic status of Krishnagiri reservoir for its sustainable management. Samples (water and plankton) were collected from 11 sites covering entire reservoir during pre-monsoon, monsoon and post-monsoon season. Limnological parameters showed some spatio-temporal variations, the season has more impacts on water quality than sites as evidenced by cluster analysis. Principal component analysis distinguished the seasons based on major influencing water quality parameters. The reservoir trophic status fluctuated from eutrophic to hyper-eutrophic. Water quality index showed that the reservoir falls under unsuitable category. Additionally, cyanobacterial bloom formation was observed in all the seasons, with dominance of Microcystis sp. This investigation can be used as a baseline for studies pertaining to nutrient and sediment loading, and immediate action is required for employment of integrated management plan to restore this aquatic ecosystem. The study also recommends strategies for sustainable management of the aquatic bioresources.
Supplementary Tables for:Ethnic differences in kidney function in childhood: the Born in Bradford Cohort Renal Study
Creators: name: Ziauddeen, Nida
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Public Health
subject: Medicine and Health Sciences
subject: Epidemiology

description: Supplementary Tables for Ethnic differences in kidney function in childhood: the Born in Bradford Cohort Renal Study
title: Evaluation of grid and non-grid techniques on digital mammographic image: An image quality and radiation dose study
Creators: name: Lai, Yau Ming
Publisher: name: The Royal Australian and New Zealand College of Radiologists
Year: 2014
Subjects: subject: Dosimetry
subject: Mammography
subject: Breast
subject: Biological effects

description: Aim Methods and materials Results Conclusion Personal information References
description: Aim: Current mammographic practice often applies grid. Grid technique is believed to produce better images but higher radiation dose on patients. Non-grid technique, however, allows the use of a lower radiationdose, in particular to subject with small...
What is the extent of research on the characteristics, behaviors, and impacts of health information technology champions? A scoping review
Creators: name: Shea, Christopher
name: Belden, Charles M
Publisher: name: BioMed Central
Year: 2016

description: Abstract Background Although champions are commonly employed in health information technology (HIT) implementations, the state of empirical literature on HIT champions’ is unclear. The purpose of our review was to synthesize quantitative and qualitative studies to identify the extent of research on the characteristics, behaviors, and impacts of HIT champions. Ultimately, our goal was to identify gaps in the literature and inform implementation science. Methods Our review employed a broad search strategy using multiple databases—Embase, Pubmed, Cinahl, PsychInfo, Web of Science, and the Cochrane library. We identified 1728 candidate articles, of which 42 were retained for full-text review. Results Of the 42 studies included, fourteen studies employed a multiple-case study design (33 %), 12 additional articles employed a single-case study design (29 %), five used quantitative methods (12 %), two used mixed-methods (5 %), and one used a Delphi methodology (2 %). Our review revealed multiple categories and characteristics of champions as well as influence tactics they used to promote an HIT project. Furthermore, studies have assessed three general types of HIT champion impacts: (1) impacts on the implementation process of a specific HIT; (2) impacts on usage behavior or overall success of a specific HIT; and (3) impacts on general organizational-level innovativeness. However the extent to which HIT projects fail even with a champion and why such failures occur is not clear. Also unclear is whether all organizations require a champion for successful HIT project implementation. In other words, we currently do not know enough about the conditions under which (1) a health IT champion is needed, (2) multiple champions are needed, and (3) an appointed champion—as opposed to an emergent champion—can be successful. Conclusions Although champions appear to have contributed to successful implementation of HIT projects, simply measuring the presence or absence of a champion is not sufficient for assessing impacts. Future research should aim for answers to questions about who champions should be, when they should be engaged, what they should do, how management can support their efforts, and what their impact is given the organizational context.
Perturbative Unidirectional Invisibility
Creators: name: Mostafazadeh, Ali
Publisher: name: arXiv
Year: 2015
Subjects: subject: Quantum Physics (quant-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We outline a general perturbative method of evaluating scattering features of finite-range complex potentials and use it to examine complex perturbations of a rectangular barrier potential. In optics, these correspond to modulated refractive index profiles of the form $n(x)=n_0+f(x)$, where $n_0$ is real, $f(x)$ is complex-valued, and $|f(x)|\ll1\leq n_0$. We give a comprehensive description of the phenomenon of unidirectional invisibility for such media, proving five general theorems on its realization in ${\cal PT}$-symmetric and non-${\cal PT}$-symmetric material. In particular, we establish the impossibility of unidirectional invisibility for ${\cal PT}$-symmetric samples whose refractive index has a constant real part and show how a simple scaling transformation of a unidirectionally invisible ${\cal PT}$-symmetric index profile with $n_0=1$ may be used to generate a hierarchy of unidirectionally invisible ${\cal PT}$-symmetric index profiles with $n_0>1$. The results pertaining unidirectional invisibility for $n_0>1$ open up the way for the experimental studies of this phenomenon in a variety of active material. As an application of our general results, we show that a medium with $n(x)=n_0+ζe^{iK x}$, $ζ$ and $K$ real, and $|ζ|\ll 1$ can support unidirectional invisibility only for $n_0=1$. We then construct unidirectionally invisible index profiles of the form $n(x)=n_0+\sum_\ell z_\ell e^{iK_\ell x}$, with $z_\ell$ complex, $K_\ell$ real, $|z_\ell|\ll 1$, and $n_0>1$.
description: 15 pages, 3 figures
Transient lattice contraction in the solid-to-plasma transition
Creators: name: Ferguson, K. R.
name: Bucher, M.
name: Gorkhover, Tais
name: Boutet, S.
name: Fukuzawa, H.
name: Koglin, J. E.
name: Kumagai, Y.
name: Lutman, A.
name: Marinelli, A.
name: Messerschmidt, M.
name: Nagaya, K.
name: Turner, J.
name: Ueda, K.
name: Williams, G. J.
name: Bucksbaum, P. H.
name: Bostedt, C.
Publisher: name: Technische Universität Berlin
Year: 2016
Subjects: subject: 500 Naturwissenschaften und Mathematik
subject: x-ray
subject: cluster
subject: ultrafast
subject: scattering

description: In condensed matter systems, strong optical excitations can induce phonon-driven processes that alter their mechanical properties. We report on a new phenomenon where a massive electronic excitation induces a collective change in the bond character that leads to transient lattice contraction. Single large van der Waals clusters were isochorically heated to a nanoplasma state with an intense 10-fs x-ray (pump) pulse. The structural evolution of the nanoplasma was probed with a second intense x-ray (probe) pulse, showing systematic contraction stemming from electron delocalization during the solid-to-plasma transition. These findings are relevant for any material in extreme conditions ranging from the time evolution of warm or hot dense matter to ultrafast imaging with intense x-ray pulses or, more generally, any situation that involves a condensed matter-to-plasma transition.
title: Ultrasonometry of patella-condyle distance: Effects of gender, knee flexion and leg dominance
Creators: name: Lai, Yau Ming
Publisher: name: The Royal Australian and New Zealand College of Radiologists
Year: 2014
Subjects: subject: Extremities
subject: Bones
subject: Ultrasound
subject: Comparative studies
subject: Athletic injuries

description: Aim Methods and materials Results Conclusion Personal information References
description: Aim: Patellofemoral pain syndrome (PFPS) is a very common knee problem. Patella mal-alignment [1]and mal-tracking [2]are considered as themajor etiology. Current imaging method, CT and MRI, cannot provide dynamic assessment of the joint in full range of...
Modeling the evolution and distribution of the frequency's second derivative and the braking index of pulsar spin
Creators: name: Xie, Yi
name: Zhang, Shuang-Nan
name: Liao, Jin-Yuan
Publisher: name: arXiv
Year: 2015
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We model the evolution of the spin frequency's second derivative $\ddotν$ and the braking index $n$ of radio pulsars with simulations within the phenomenological model of their surface magnetic field evolution, which contains a long-term power-law decay modulated by short-term oscillations. For the pulsar PSR B0329+54, a model with three oscillation components can reproduce its $\ddotν$ variation. We show that the "averaged" $n$ is different from the instantaneous $n$, and its oscillation magnitude decreases abruptly as the time span increases, due to the "averaging" effect. The simulated timing residuals agree with the main features of the reported data. Our model predicts that the averaged $\ddotν$ of PSR B0329+54 will start to decrease rapidly with newer data beyond those used in Hobbs et al.. We further perform Monte Carlo simulations for the distribution of the reported data in $|\ddotν|$ and $|n|$ versus characteristic age $τ_{\rm c}$ diagrams. It is found that the magnetic field oscillation model with decay index $α=0$ can reproduce the distributions quite well. Compared with magnetic field decay due to the ambipolar diffusion ($α=0.5$) and the Hall cascade ($α=1.0$), the model with no long term decay ($α=0$) is clearly preferred for old pulsars by the p-values of the two-dimensional Kolmogorov-Smirnov test.
description: 13 pages, 5 figures. Accepted for publication in RAA. arXiv admin note: substantial text overlap with arXiv:1307.6413
title: Dynalog data tool for IMRT plan verification
Creators: name: Sashin, Vladimir
Publisher: name: The Royal Australian and New Zealand College of Radiologists
Year: 2014
Subjects: subject: Computer applications
subject: Radiation physics
subject: Experimental
subject: Intensity Modulated Radiotherapy (IMRT)
subject: Quality assurance

description: Aim Methods and materials Results Conclusion Personal information References
description: Aim: The complexity of IMRT treatments demands a comprehensive quality assurance (QA) program that includes checks and tests performed at different stages of the treatment: simulation, planning and dose delivery. An important component of this QA program...
Pressure induced crossing of the core-levels in 5d metals
Creators: name: Tal, Alexey A.
name: Katsnelson, Mikhail I.
name: Ekholm, Marcus
name: Jönsson, Johan
name: Dubrovinsky, Leonid
name: Dubrovinskaia, Natalia
name: Abrikosov, Igor A.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Pressure induced interaction between core electrons, the core level crossing (CLC) transition has been observed in hcp Os at P~400 GPa [L. Dubrovinksy, et al., Nature 525, 226-229 (2015)]. In this work, we carry out a systematic study of the influence of pressure on the electronic structure in all metals of the 5d series (Hf,Ta,W,Re,Os,Ir,Pt,Au) using first-principles electronic structure calculations. We have found that CLC is a general effect for this series of metals. While in Pt it occurs at ~1500 GPa, at a pressure substantially higher than in Os, in Ir it occurs already at 80 GPa. Moreover, we predict that in Re the CLC transition may appear at ambient pressure. We analyze the shifts of the CLC transition pressure across the series within the Thomas-Fermi model, and show that the effect has many common features to the atomic collapse in the rare-earth elements.
description: 6 pages, 3 figures
Review: Global Decadence, Race, and Futures of Decadence Studies Conference, Online, 31 March - 1 April 2023
Creators: name: Nebraska Lynch, Rachael
name: Nandi, Gunja
Publisher: name: Volupté
Year: 2023

description: Volupté, Vol. 6 No. 1 (2023): Decolonizing Decadence
title: An automated method for assessment of MLC leaf positioning accuracy for stereotactic radiotherapy
Creators: name: Sabet, Mahsheed
Publisher: name: The Royal Australian and New Zealand College of Radiologists
Year: 2014
Subjects: subject: Radiation physics
subject: Experimental
subject: Digital radiography
subject: Radiation therapy / Oncology
subject: Quality assurance
subject: Radiotherapy techniques

description: Aim Methods and materials Results Conclusion Personal information References
description: Aim: Conventional stereotactic radiotherapy treatments were based on cone collimators. More modern techniques are developed in which multi-leaf collimators (MLC) are used to define the treatment beams. Since stereotactic beams deliver very high doses to...
Machine learning of accurate energy-conserving molecular force fields
Creators: name: Chmiela, Stefan
name: Tkatchenko, Alexandre
name: Sauceda, Huziel E.
name: Poltavsky, Igor
name: Schütt, Kristof T.
name: Müller, Klaus-Robert
Publisher: name: Technische Universität Berlin
Year: 2017
Subjects: subject: 500 Naturwissenschaften und Mathematik
subject: force field
subject: machine learning
subject: gradient field
subject: potential-energy surface
subject: energy conservation
subject: kernel regression
subject: path integrals
subject: molecular dynamics

description: Using conservation of energy - a fundamental property of closed classical and quantum mechanical systems - we develop an efficient gradient-domain machine learning (GDML) approach to construct accurate molecular force fields using a restricted number of samples from ab initio molecular dynamics (AIMD) trajectories. The GDML implementation is able to reproduce global potential energy surfaces of intermediate-sized molecules with an accuracy of 0.3 kcal mol−1 for energies and 1 kcal mol−1 Å̊−1 for atomic forces using only 1000 conformational geometries for training. We demonstrate this accuracy for AIMD trajectories of molecules, including benzene, toluene, naphthalene, ethanol, uracil, and aspirin. The challenge of constructing conservative force fields is accomplished in our work by learning in a Hilbert space of vector-valued functions that obey the law of energy conservation. The GDML approach enables quantitative molecular dynamics simulations for molecules at a fraction of cost of explicit AIMD calculations, thereby allowing the construction of efficient force fields with the accuracy and transferability of high-level ab initio methods.
Heavy metals concentration in soils and crop plants within the vicinity of abandoned mine sites in Nigeria: an integrated indexical and chemometric approach
Creators: name: Omeka, Michael E.
name: Igwe, Ogbonnaya
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Biophysics
subject: Biochemistry
subject: Cell Biology
subject: Molecular Biology
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences

description: In the Okurumutet-Iyamitet Mine area, mining is done by the open-cast method, without environmental impact assessment, thereby exposing the environment and its inhabitants to risks. This study aimed to assess the toxicological processes that control the plants’ heavy metal uptake into their tissues, the suitability for human consumption, and the possible sources of heavy metals using an integrated approach. The concentration of selected trace metals in plant samples was analysed by the microwave digestion method using 1 mL and 6 mL of concentrated perchloric acid and nitric acid respectively. The concentration of heavy metals in soil samples was analysed by extraction and centrifugation following standard procedures. The extracts collected were analysed by placing them into the flame of the PerkinElmer Analyst 200 atomic absorption spectrophotometer and graphite furnace atomic absorption spectrophotometer for soil and plants respectively. The concentration of heavy metals decreased in the order: Fe > Zn > Mn > Ba > Pb > Cd and Fe > Zn > Ba > Mn > Pb > Cd for the soil and cassava plants respectively. When compared with the Food and Agricultural Organisation/World health organisation and soil quality guideline, Cd recorded values in soils above the required standards. Numerical models revealed a moderate to high extent of heavy metal pollution in soil with Cd and Fe posing the highest contamination level across all the samples. The translocation factor revealed that heavy metals are more accumulated in the leaves than tubers. Similarly, the bioconcentration factor (BCF) showed that the inhabitants are exposed to heavy metal contamination from the consumption of cassava tubers, as the BCF values were >1.00. Chemometric analyses identified anthropogenic activities as the major influence on the accumulation and bioavailability of heavy metals. Hence, emphasis should be placed on Cd and Fe to mitigate further heavy metal pollution in the area.
Draft Genome Sequence of Rheinheimera sp. F8, a Biofilm-Forming Strain Which Produces Large Amounts of Extracellular DNA
Creators: name: Schuster, Anna-Kathrin
name: Szewzyk, Ulrich
Publisher: name: Technische Universität Berlin
Year: 2016
Subjects: subject: 570 Biowissenschaften; Biologie

description: Rheinheimera sp. strain F8 is a biofilm-forming gammaproteobacterium that has been found to produce large amounts of filamentous extracellular DNA. Here, we announce the de novo assembly of its genome. It is estimated to be 4,464,511 bp in length, with 3,970 protein-coding sequences and 92 RNA-coding sequences.
A controlled vocabulary for a social science knowledge graph
Creators: name: Bach, Janete Saldanha
name: Klas, Claus-Peter
name: Zapilko, Benjamin
Publisher: name: Zenodo
Year: 2022
Subjects: Knowledge graphs - Social Sciences
Variables relations description
Controlled vocabularies
CESSDA vocabulary manager

description: Research outputs are increasingly interdependent, interconnecting many entities from different levels into relationship maps such as the knowledge graphs. Within DDI LC implicit and explicit relations are modelled within and across studies on all entities, such as studyunits, instruments, questions, response scales, and variables. As the variable is one of the most relevant entities, particularly for re-use purposes, we present a Social Sciences framework design for the relations and their descriptions to build a Social Science knowledge graph. These relations explicit between variables will describe links across different waves and studies in conjunction with questions. In addition, relations such as ”derived by”, ”aggregated by” or variables annotated with controlled vocabularies are also defined. We provide a brief textual identification of the relation type, supported by a controlled vocabulary (CV) and an extended description of the relationship. This will be published as a controlled vocabulary for variable relations via the CESSDA vocabulary manager to foster vocabulary re-use . Documenting and describing all these relations will enrich the data reuse by supporting search and browse functionality. By re-using the CV, a general Social Science research knowledge graph can be created across institutes, in line with the FAIR principles. As next step we will extend the descriptions of relations to further entities within DDI also published as CV.
description: The service is part of the KonsortSWD project deliverable (Persistent Identifiers for Variables - KonsortSWD Task Area 5: Measure 1), NFDI funding number 442494171. PID Service report https://doi.org/10.5281/zenodo.6397367.
Association between fire-safe cigarette legislation and residential fire deaths in the United States
Creators: name: Marshall, Stephen
name: Yau, Rebecca K
Publisher: name: Springer
Year: 2014

description: Abstract: Background: Cigarettes and other tobacco-related smoking products have traditionally been a major ignition source for residential fire deaths. In the United States, all 50 states and the District of Columbia have passed laws requiring that cigarettes self-extinguish if they are not being smoked (so-called fire-safe cigarette laws). The purpose of this study was to quantify the association between state-level implementation of fire-safe cigarette legislation and the rate of residential fire death. Methods: Poisson regression was used to analyze state-years data. Main intervention: Implementation dates for fire-safe cigarette legislation in each state. Outcome: Residential fire mortality rate. Results: Implementation of fire-safe cigarette legislation was associated with a 19% reduction in overall residential fire mortality rates, adjusted for demographic differences between states (rate ratio = 0.81, 95% confidence interval: 0.79, 0.84). This is approximately similar to the estimated proportion of residential fire deaths in which smoking materials are an ignition source (23%). Legislation implementation was associated with a protective effect for every age, sex, race, and ethnicity strata that we examined. State-specific residential fire mortality death rates decreased (defined as a drop of at least 5%) in 32 states after fire-safe cigarette legislation was implemented. In 12 states there was either less than a 5% decrease or an increase, and seven states had insufficient deaths to evaluate state-level changes. Conclusions: Implementation of fire-safe cigarette is associated with reductions in residential fire mortality rates.
Draft Genome Sequence of a Potential Nitrate-Dependent Fe(II)-Oxidizing Bacterium, Aquabacterium parvum B6
Creators: name: Zhang, Xiaoxin
name: Ma, Fang
name: Szewzyk, Ulrich
Publisher: name: Technische Universität Berlin
Year: 2016
Subjects: subject: 570 Biowissenschaften; Biologie

description: Aquabacterium parvum B6 is a potential nitrate-dependent Fe(II)-oxidizing bacterium. The genes related to its denitrifying mechanism and iron metabolisms were unknown. We present the draft genome of Aquabacterium parvum B6, which could provide further insight into the nitrate-dependent Fe(II)-oxidizing mechanism of strain B6.
Random data Cauchy problem for the nonlinear Schrödinger equation with derivative nonlinearity
Creators: name: Hirayama, Hiroyuki
name: Okamoto, Mamoru
Publisher: name: arXiv
Year: 2015
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: We consider the Cauchy problem for the nonlinear Schrödinger equation with derivative nonlinearity $(i\partial _t + Δ) u= \pm \partial (\overline{u}^m)$ on $\R ^d$, $d \ge 1$, with random initial data, where $\partial$ is a first order derivative with respect to the spatial variable, for example a linear combination of $\frac{\partial}{\partial x_1} , \, \dots , \, \frac{\partial}{\partial x_d}$ or $|\nabla |= \mathcal{F}^{-1}[|ξ| \mathcal{F}]$. We prove that almost sure local in time well-posedness, small data global in time well-posedness and scattering hold in $H^s(\R ^d)$ with $s> \max \left( \frac{d-1}{d} s_c , \frac{s_c}{2}, s_c - \frac{d}{2(d+1)} \right)$ for $d+m \ge 5$, where $s$ is below the scaling critical regularity $s_c := \frac{d}{2}-\frac{1}{m-1}$.
description: 25 pages
title: Improving radiology objective structured clinical examinations with psychometric analysis
Creators: name: Tan, Gerald
Publisher: name: The Royal Australian and New Zealand College of Radiologists
Year: 2014
Subjects: subject: Professional issues
subject: Management
subject: Computer applications
subject: Digital radiography
subject: Audit and standards
subject: Outcomes analysis
subject: Education
subject: Education and training
subject: Quality assurance

description: Aim Methods and materials Results Conclusion Personal information References
description: Aim: One component of the summative exit examination of our diagnostic radiology trainingprogramme includes an objective structured clinical examination (OSCE), similar in format to the 'Round the Boards' section of the FRANZCR examination. This consists...
Review: J. B. Bullen, Rosalind White, and Lenore A. Beaky, eds, Pre-Raphaelites in the Spirit World: The Séance Diary of William Michael Rossetti, (Oxford: Peter Lang, 2022)
Creators: name: Skelly, Julia
Publisher: name: Volupté
Year: 2023

description: Volupté, Vol. 6 No. 1 (2023): Decolonizing Decadence
title: Developing the case for medical physicists in diagnostic imaging
Creators: name: Wilkinson, Luke
Publisher: name: The Royal Australian and New Zealand College of Radiologists
Year: 2014
Subjects: subject: CT
subject: Management
subject: Digital radiography
subject: Fluoroscopy
subject: Acceptance testing
subject: Workforce

description: Aim Methods and materials Results Conclusion Personal information References
description: Aim: Diagnostic Imaging departments benefit from medical physics services. The role of the Diagnostic Imaging Medical Physicist (DIMP) is poorly understood. Australian radiation legislation requires imaging providers to ensure that a DIMP is available...
Wilfahrt_WorldPolitics_2018_k7wj - Lou - 2kgg8
Creators: name: Lou, Nigel Mantou
name: Parsons, Elan
name: Miske, Olivia
name: Luis, Brianna
name: Loomas, Zachary
name: Fox, Nicholas
name: Tyner, Andrew
name: Hahn, Krystal
Publisher: name: Open Science Framework
Year: 2022
Subjects: subject: Social and Behavioral Sciences

description: Attempting a reproduction of Wilfahrt M. (2018)' analysis.
A review on antibiotic residue in foodstuffs from animal source: global health risk and alternatives
Creators: name: Haque, Ahmed Redwan
name: Sarker, Manobendro
name: Das, Rana
name: Azad, Md. Abul Kalam
name: Hasan, Md. Mehedi
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: Ecology
subject: Cancer
subject: Science Policy
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: The overuse and misuse of antibiotics to treat diseases and promote the growth of animals lead to the deposition of antibiotics in animal tissues, and subsequently, antibiotics come into the human body through the food chain. In this paper, comparative studies on antibiotic residue (AR) in foodstuffs from animal source and human health risks are reviewed in detail. The early part of this review is focused on the use of different veterinary antibiotics in animal farms and the marine environment as a reservoir of ARs. Later on, ARs in foodstuffs, including meat, milk, and marine foods have been comprehensively discussed. Review studies on human health issues associated with antibiotics show that people from poor and developing countries are the most vulnerable to infectious diseases caused by antibiotic-resistant bacteria. At the end of the review, some alternative approaches that include the use of phytogenic feed additive, organic acid, probiotic, prebiotic, and other substances are summarized, considering their potential exposure to replace antibiotics as growth promoters and mitigate the prevalence of antibiotic-resistant genes.
title: Catching errors during radiotherapy plan transferring from TPS to R&V system: validation of a plan-checking software tool
Creators: name: Xing, Aitang
Publisher: name: The Royal Australian and New Zealand College of Radiologists
Year: 2014
Subjects: subject: Radiation physics
subject: Computer applications
subject: MR-Functional imaging
subject: MR
subject: Dosimetry
subject: Intensity Modulated Radiotherapy (IMRT)
subject: Image guided radiotherapy

description: Aim Methods and materials Results Conclusion Personal information References
description: Aim: Prior to treatment, verifying that radiotherapy plans within the record and verify (R&V) match those originally planned in the treatment planning system (TPS) is a routine task manually performed by medical physicists and RTs in our clinic. An...